JP5335399B2 - Support structure in air conditioner - Google Patents

Description

  The present invention relates to a support structure in an air conditioner that supports equipment with vibration, such as a compressor of an air conditioner or a gas engine.

Conventionally, in an air conditioner, in order to suppress vibrations of the compressor, the compressor is disposed on a vibration plate, and the vibration plate is connected to the bottom plate of the air conditioner through vibration isolation means made of an elastic material such as rubber. A support structure is used that is fixed to (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 9-222245

However, the conventional support structure has a limit in the vibration-proofing effect, and the vibration of the compressor may not be sufficiently absorbed and may be transmitted to the bottom plate.
Therefore, an object of the present invention is to provide a support structure in an air conditioner that eliminates the problems of the conventional techniques described above and makes it difficult to transmit vibrations of equipment accompanied by vibrations such as a compressor or a gas engine to the bottom plate. It is in.

In order to solve the above-described problem, the support structure in the air conditioner of the present invention is provided with a projecting portion that projects in a plate-like state from the support platform to the side of the support platform of the bottom plate of the unit body. A device supporting vibration such as a compressor or a gas engine is supported through a vibration isolating means, and the support base includes a base plate and a leg piece extending downward from the base plate and fixed to the bottom plate. And the projecting portion projects from the support base in the vicinity of the leg piece to the side of the leg piece, and is located in the vicinity of the fixing portion between the leg piece and the bottom plate .
According to the above configuration, since the vibration of the device is transmitted to the overhanging portion that protrudes in a plate-like state, the overhanging portion vibrates to attenuate the vibration of the device, and it is difficult to transmit the vibration of the device to the bottom plate. .
According to the above configuration, since the support base positioned in the vicinity of the overhanging portion is supported by the leg pieces, even if the overhanging portion vibrates, a large bending moment does not act on the support base. For this reason, it is possible to suppress damages such as cracks of the support base due to fatigue, to maintain the life of the support base for a long time, and to prevent the bending vibration of the support base due to bending moment and the generation of noise due to this. Is possible.

The said structure WHEREIN: An upper board may be arrange | positioned on the said support stand, and the said upper board may be provided with the said overhang | projection part.
According to the said structure, an overhang | projection part can be easily provided only by arrange | positioning an upper board on a support stand. Further, since the upper surface of the support base is reinforced by the upper plate, the strength of the support base can be improved.

The said structure WHEREIN: A recess may be provided in the said baseplate and it may project in the state which the projecting part projected from the said support stand floats above this recess.
According to the above configuration, since the vibration of the device is transmitted to the overhanging portion that floats above the recess, the overhanging portion vibrates to attenuate the vibration of the device and transmit the vibration of the device to the bottom plate. It can be difficult.

  According to the present invention, the support base of the bottom plate of the unit main body is provided with an overhang portion that projects in a plate-like state laterally from the support base, and the compressor or gas is provided to the overhang portion via the vibration isolating means. By supporting the equipment with vibrations such as the engine, the vibration of the equipment is transmitted to the overhanging part that protrudes in a plate-like state, so the overhanging part vibrates and attenuates the vibration of the equipment. Can hardly be transmitted to the bottom plate.

Preferred embodiments of the present invention will be described below with reference to the drawings.
[First embodiment]
The air conditioner to which the support structure according to the first embodiment is applied includes an outdoor unit (unit body) 10 and an indoor unit (not shown), and refrigerant is connected to a refrigerant circuit connected by refrigerant piping. To perform cooling operation and heating operation. 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 installed and viewed from the front side.

FIG. 1 is a perspective view of the outdoor unit 10, and FIG. 2 is a perspective view of the outdoor unit 10 with the top plate 13 and the front panel 14 removed. FIG. 3 is a front view of FIG. FIG. 4 is a plan view of FIG.
As illustrated in FIG. 1, the outdoor unit 10 includes a unit case 11 having a substantially rectangular parallelepiped box shape. The unit case 11 includes a bottom plate 12 (see FIG. 2), a top plate 13, a front panel 14, and an outer plate 15. It has. As shown in FIG. 2, the inside of the unit case 11 is partitioned vertically by a partition plate 16 erected on the bottom plate 12, and is divided into a heat exchange chamber R1 and a machine chamber R2. The front panel 14 includes a heat exchange chamber side front panel 14A that covers the front surface of the heat exchange chamber R1, and a machine room side front panel 14B that covers the front surface of the machine room R2. By removing each front panel, An operator can perform maintenance work on components in the heat exchange chamber R1 and the machine room R2 from the front side of the outdoor unit 10.

  As shown in FIG. 2 to FIG. 4, the heat exchanger 21 accommodates the heat exchanger 21 on the back side thereof and the blowers 22 </ b> A and 22 </ b> B arranged in the vertical direction on the front side thereof. As shown in FIG. 4, 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, 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.

As shown in FIGS. 2 to 4, the blowers 22 </ b> A and 22 </ b> B are attached to a pair of left and right columns 24 </ b> L and 24 </ b> R fixed to the heat exchanger 21. As shown in FIG. 4, the blower 22A is composed of a fan motor 26A fixed to the posts 24L and 24R via a pedestal 25A, and a propeller fan (axial fan) 27A attached to the shaft of the fan motor 26A. The propeller fan 27A is disposed on the front side of the heat exchange chamber R1. Further, as shown in FIG. 1, the front portion of the propeller fan 27A enters a round flange-shaped fan cover portion 28A provided on the heat exchange chamber side front panel 14A of the heat exchange chamber R1. The opening of the fan cover 28A functions as a ventilation path (blower), and is covered with a fan guard 29A that prevents the propeller fan 27 from contacting a human body or the like. 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 has the same reference numerals as the devices 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.

As shown in FIG. 2, refrigerant circuit components such as a compressor 31, an accumulator 32, a four-way valve 33, and an expansion valve are connected by piping to the machine room R2, and are accommodated in the space of the machine room R2. The In the compressor 31 and the accumulator 32, a soundproof material 39 for suppressing noise generated by these devices is attached so as to surround these devices. Although not shown in FIG. 2, the opening formed in the upper part when the compressor 31 and the accumulator 32 are surrounded by the soundproof material 39 is closed by another soundproof material.
2 and 3, a support piece 36 is disposed at a substantially intermediate position on the front side of the machine room R2. The support piece 36 includes a gas pipe service valve 37, a liquid pipe service valve 38, and the like. Is fixed. The gas pipe service valve 37 and the liquid pipe service valve 38 are connected to a gas pipe and a liquid pipe 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. The electrical box 40 includes a first support plate 41 that extends above the partition plate 16 and a second support plate 42 that is attached to the first support plate 41. An electrical unit such as a substrate is disposed on the second support plate 42.

  As shown in FIG. 2, the partition plate 16 is provided between the heat exchange chamber R1 and the machine room R2, and includes a thin sheet metal substrate portion 16A that separates the heat exchange chamber R1 and the machine room R2. The four sides of the substrate portion 16A are bent toward the machine room R2 and formed into a tray shape. As described above, the partition plate 16 is formed by bending a thin sheet metal into the tray shape to improve rigidity (strength). The partition plate 16 is erected on the bottom plate 12 by fixing the bottom plate 12 formed by bending the bottom side of the partition plate 16 and the bottom plate 12 by screwing. Further, a back surface portion formed by bending the rear side of the partition plate 16 is fixed to a tube plate 35 provided at an end portion of the heat exchanger 21 by screwing. Specifically, a tube plate 35 is provided at the right end of the heat exchanger 21 in FIG. 4, and the side edge portion inside the unit case 11 is formed in a substantially L shape on the tube plate 35. A bent rib 35A is formed, and the back surface of the partition plate 16 is fixed to the rib 35A by screwing.

FIG. 5 is a perspective view showing the outdoor unit 10 with the top plate 13, the front panel 14, and the outer plate 15 removed. In FIG. 5, internal components other than the compressor 31 and the accumulator 32 are omitted.
The compressor 31 is formed in a substantially columnar shape, and includes a plurality of (three in the present embodiment) legs 31A that protrude laterally from the lower portion of the compressor 31. The accumulator 32 is formed in a columnar shape having a smaller diameter than the compressor 31, and is fixed to the outer peripheral surface of the compressor 31 via an attachment 32A (see FIG. 7). The compressor 31 is vertically mounted on the bottom plate 12 by the support structure 50. The support structure 50 is configured to include a support base 60 disposed on the bottom plate 12 and an upper plate 70 disposed on the support base 60.

FIG. 6 is an exploded perspective view showing the support structure 50.
The support base 60 is formed, for example, by bending a single sheet metal. The support base 60 includes a horizontal base plate 60A and a plurality of legs 61 to 66 that support the base plate 60A. The legs 61 and 62 are the front side of the outdoor unit 10 (see FIG. 5), the legs 63 and 64 are the right side of the outdoor unit 10, the legs 55 are the back side of the outdoor unit 10, and the legs 66 are the outdoor unit 10. It is located on the left side. Each leg part 61-66 is bent by the substantially L shape by side view, and has the vertical leg pillar (leg piece) 61A-66A and the horizontal leg seat 61B-66B. The leg seats 61B, 64B, and 65B are formed wider than the leg seats 62B, 63B, and 66B, and each leg seat 61B, 64B, and 65B has an attachment hole 67 for attaching the support base 60 to the bottom plate 12. Is formed.

A plurality of attachment holes 68 (three in the present embodiment) for attaching the upper plate 70 are formed in the base plate 60A. These attachment holes 68 are arranged at substantially equal intervals in the vicinity of the edge of the base plate 60A, more specifically in the vicinity of the pillars 61A, 63A, 65A.
Since the support base 60 can be manufactured by sheet metal processing, it is possible to suppress an increase in processing cost, reduce the number of parts, and simplify the manufacturing process compared to the case where the pedestal, the pedestal, and the base plate are separately formed. Can be realized.

The upper plate 70 is formed by bending a single sheet metal having elasticity. The edge of the upper plate 70 is raised upward over the entire circumference to constitute a rising piece 71. Since the rising piece 71 increases the rigidity of the peripheral edge of the upper plate 70, the rigidity of the upper plate 70 increases as a whole, and the upper plate 70 is difficult to deform. Therefore, the upper plate 70 is configured to have sufficient strength against the weight (for example, 20 kg) of the compressor 31 (see FIG. 5) and vibration thereof while maintaining a certain degree of elasticity.
An attachment hole 72 is formed in the upper plate 70 at a position corresponding to the attachment hole 68 of the support base 60.

The upper plate 70 is formed to be larger than the base plate 60 </ b> A of the support base 60, and the portions that protrude from the support base 60 in a plate shape to the side form the overhang portions 73. Each overhang portion 73 is formed in a size that allows attachment of the legs 31A (see FIG. 5) of the compressor 31. The overhanging portion 73 is formed of a sheet metal having elasticity and is overhanging in a plate-like floating state from the support base 60, so that it vibrates up and down to attenuate the vibration of the compressor 31. The elastic force of the overhanging portion 73 can be easily adjusted by adjusting the width and length of the overhanging portion 73, the thickness and material of the upper plate 70, the rising amount of the rising piece 71, and the like.
Each overhang portion 73 is formed with an attachment hole 74 for attaching the leg 31 </ b> A of the compressor 31. Each mounting hole 74 includes a large hole 74A and a pair of small holes 74B that sandwich the large hole 74A.

FIG. 7 is a plan view showing the outdoor unit 10 with the top plate 13, the front panel 14, and the outer plate 15 removed. 8 is a cross-sectional view showing the outdoor unit 10 of FIG. 7 from the front side, and FIG. 9 is a cross-sectional view showing the outdoor unit 10 of FIG. 7 from the right side. 7 to 9, internal components other than the compressor 31 and the accumulator 32 are omitted.
An attachment hole (not shown) for attaching the support base 60 is formed in the bottom plate 12 at a position corresponding to the attachment hole 67 (see FIG. 6) of the support base 60. The support base 60 is fixed to the bottom plate 12 by inserting bolts 69A through the mounting holes 67 and the mounting holes of the bottom plate 12 and tightening the bolts 69A with nuts 69B. These mounting holes 67, mounting holes for the bottom plate 12, bolts 69 </ b> A, and nuts 69 </ b> B serve as a fixing portion between the support base 60 and the bottom plate 12. The overhanging portion 73 is located in the vicinity of the fixing portion between the support base 60 and the bottom plate 12.

The upper plate 70 is fixed to the base plate 60A by inserting the bolt 75A through the attachment hole 72 (see FIG. 6) and the attachment hole 68 (see FIG. 6) and tightening the bolt 75A with a nut 75B. In the support structure 50 of the present embodiment, the overhanging portion 73 can be easily provided simply by disposing the upper plate 70 on the support base 60. Further, since the base plate 60A of the support base 60 is reinforced by the upper plate 70, the strength of the support base 60 can be improved.
The attachment hole 68, the attachment hole 72, the bolt 75 </ b> A, and the nut 75 </ b> B serve as a fixing portion between the support base 60 and the upper plate 70. The overhanging portion 73 is located in the vicinity of the fixing portion between the support base 60 and the upper plate 70.

Each leg 31 </ b> A of the compressor 31 is disposed on the overhanging portion 73 via a vibration isolating rubber (vibration isolating means) 80. Each leg 31 </ b> A is formed with a through hole (not shown) for attaching the anti-vibration rubber 80.
The anti-vibration rubber 80 is made of an elastic material such as natural rubber or synthetic rubber. The anti-vibration rubber 80 is formed in a substantially cylindrical shape, and a fixing hole (not shown) penetrating vertically is formed in the center portion thereof. A pair of protrusions 81 sandwiching the fixing hole are provided on the lower surface of the vibration isolating rubber 80. Grooves (not shown) for fitting the legs 31 </ b> A of the compressor 31 are formed on the outer periphery of the upper part of the anti-vibration rubber 80.

When the compressor 31 is attached to the support structure 50, the anti-vibration rubber 80 is disposed so that the protrusion 81 passes through the small hole 74 </ b> B of the overhanging portion 73. The leg 31A of the compressor 31 has a through hole of the leg 31A fitted in the groove of the vibration isolating rubber 80, and a bolt 34B inserted in the order of the washer 34A, the fixing hole of the anti vibration isolating rubber 80, and the large hole 74A of the upper plate 70. It is fixed to the overhanging portion 73 by tightening with the nut 34C.
Since each anti-vibration rubber 80 is fixed to the overhanging portion 73, it is possible to reduce the material of the upper plate 70 by forming the overhanging portion 73 to a minimum size where the anti-vibration rubber 80 can be disposed. become.

  The compressor 31 vibrates when the air conditioner operates. The vibration of the compressor 31 is first absorbed by the vibration isolating rubber 80 attached to the legs 31 </ b> A of the compressor 31, and the vibration of the compressor 31 that could not be absorbed by the vibration isolating rubber 80 is transmitted to the overhang portion 73. And the overhang | projection part 73 can vibrate up and down, can attenuate the vibration of the compressor 31, and can make it difficult to transmit the vibration of the compressor 31 to the baseplate 12. FIG. At this time, since the anti-vibration rubber 80 is disposed outside the leg columns 61A, 63A, 65A, the vibration from the compressor 31 is directly transmitted to the overhanging portion 73. Thereby, it is possible to prevent the vibration of the compressor 31 from being transmitted to the bottom plate 12 without being attenuated, and to further improve the vibration isolation effect.

  Since the base plate 60A located in the vicinity of the overhanging portion 73 is supported by the leg columns 61A to 66A, even if the overhanging portion 73 vibrates, a large bending moment does not act on the base plate 60A. Further, since the vibrating overhanging portion 73 and the fixing portion of the support base 60 are close to each other, even if the overhanging portion 73 vibrates, a large bending moment does not act on the support base 60. Thereby, even if the compressor 31 is operated for a long period of time, damage such as cracks of the support base 60 due to fatigue can be suppressed, the life of the support base 60 can be maintained long, and the support base 60 due to a bending moment can be maintained. It is possible to prevent the occurrence of flexural vibration and noise due to this. Furthermore, since the bending vibration of the support base 60 due to the bending moment is prevented, the looseness of the bolt 69A can be suppressed.

The fixing portion between the support base 60 and the upper plate 70 is disposed in the vicinity of the leg pillars 61A, 63A, 65A, and the overhanging portion 73 is close to the fixing portion between the support base 60 and the upper plate 70. Only the bulging portion 73 of the plate 70 vibrates. Thereby, the vibration of the upper plate 70 other than the overhanging portion 73 is suppressed, and it is possible to prevent the generation of noise due to the upper plate 70 colliding with the base plate 60A. Furthermore, since vibration of the upper plate 70 other than the overhanging portion 73 is prevented, loosening of the bolt 75A can be suppressed.
In the present embodiment, since the compressor 31 is supported by the support structure 50, it is possible to reduce the noise by about 2.3 dB as compared with the case where the compressor is directly fixed to the bottom plate with vibration proof rubber.

  As described above, according to the present embodiment, the support base 60 of the bottom plate 12 of the outdoor unit 10 is provided with the overhanging portion 73 that protrudes in a plate-like state from the support base 60 to the side. The compressor 31 accompanied by vibration was supported on the overhanging portion 73 via a vibration isolating rubber 80. As a result, the vibration of the compressor 31 is transmitted to the overhanging portion 73 that protrudes in a plate-like state, so that the overhanging portion 73 vibrates to attenuate the vibration of the compressor 31 and the vibration of the compressor 31 is reduced to the bottom plate. 12 can be made difficult to transmit.

  Further, according to the above embodiment, since the upper plate 70 is disposed on the support base 60 and the upper plate 70 is provided with the overhanging portion 73, it is easy to simply arrange the upper plate 70 on the support base 60. An overhanging portion 73 can be provided. Further, since the base plate 60A of the support base 60 is reinforced by the upper plate 70, the strength of the support base 60 can be improved.

  Furthermore, according to the above-described embodiment, the projecting portion 73 projects in the vicinity of the leg pillars 61A, 63A, 65A of the support base 60. Thereby, since the base plate 60A of the support base 60 located in the vicinity of the overhanging portion 73 is supported by the leg columns 61A, 63A, 65A, even if the overhanging portion 73 vibrates, a large bending moment acts on the base plate 60A. There is nothing. For this reason, it is possible to suppress damage such as cracks of the support base 60 due to fatigue, to maintain the life of the support base 60 for a long time, and to prevent the bending vibration of the support base 60 due to bending moment and the generation of noise due thereto. Is possible.

  In the present embodiment, the support structure 50 of the present invention is applied to the compressor 31, but the apparatus to which the present invention is applied is not limited to the compressor 31. For example, in the case of a GHP (gas heat pump) type air conditioner in which the air conditioner drives the compressor by driving the gas engine, the support structure of the present invention may be applied to the gas engine in addition to the compressor. In this case, the vibration of the engine is attenuated by the support structure, and the transmission of the engine vibration to the bottom plate can be suppressed.

[Second Embodiment]
Next, with reference to FIG. 10, the support structure 150 in the air conditioning apparatus which concerns on 2nd embodiment is demonstrated. In FIG. 10, the same parts as those of the support structure 50 shown in FIG.
The bottom plate 112 is formed with a recess 112A by bending the sheet metal into a substantially concave shape in cross-sectional view. Because the recess 112A increases the rigidity of the bottom plate 112, the bottom plate 112 can be strengthened to a sufficient strength against the weight of the compressor 31 and its vibration. The recess 112A is formed in a plurality or continuously on the bottom plate 112, and a portion surrounded by the recess 112A is a support base 160.

The support base 160 includes the base plate 60A and a plurality of leg posts 61A to 66A extending downward from the base plate 60A. Since the support base 160 can be manufactured integrally with the bottom plate 112 by sheet metal processing, an increase in processing cost can be suppressed, and the number of parts can be reduced and the manufacturing process can be simplified as compared with the case where the support base and the bottom plate are separately formed. Can be realized.
The support structure 150 according to the second embodiment includes a support base 160 and the upper plate 70 disposed on the support base 60. The support structure 150 is configured in the same manner as the support structure 50 shown in FIGS. 5 to 9 except that the pillars 61 </ b> A to 66 </ b> A are formed integrally with the bottom plate 112.

  Since the vibration of the compressor 31 is transmitted to the overhanging portion 73 that floats above the recess 112A, the overhanging portion 73 vibrates to attenuate the vibration of the compressor 31, and the vibration of the compressor 31 is reduced. Transmission to the bottom plate 112 can be made difficult. Since the pillars 61A, 63A, 65A formed integrally with the bottom plate 112 are located in the vicinity of the vibrating overhanging portion 73, a large bending moment acts on the support base 60 even if the overhanging portion 73 vibrates. There is no. Thereby, even if the compressor 31 is operated for a long period of time, damage such as cracks of the support base 60 due to fatigue can be suppressed, the life of the support base 60 can be maintained long, and the support base 60 due to a bending moment can be maintained. It is possible to prevent the occurrence of flexural vibration and noise due to this.

  As described above, according to the present embodiment, the recess 112A is provided in the bottom plate 112, and the protruding portion 73 protruding from the support base 60 protrudes above the recess 112A in a floating state. As a result, the vibration of the compressor 31 is transmitted to the overhanging portion 73 that protrudes above the recess 112 </ b> A, so that the overhanging portion 73 vibrates and attenuates the vibration of the compressor 31. It is possible to make it difficult to transmit vibration to the bottom plate 112.

It is a figure which shows the outdoor unit to which the support structure which concerns on 1st embodiment of this invention is applied. It is a perspective view of the outdoor unit of a state which removed the top plate and the front panel. FIG. 3 is a front view of FIG. 2. FIG. 3 is a plan view of FIG. 2. It is a perspective view which shows the outdoor unit of a state which removed the top plate, the front panel, and the outer plate. It is a disassembled perspective view which shows a support structure. It is a top view which shows the outdoor unit of the state which removed the top plate, the front panel, and the outer plate. It is sectional drawing which shows the outdoor unit of FIG. 7 from the front side. It is sectional drawing which shows the outdoor unit of FIG. 7 from the right side surface side. It is sectional drawing which shows the support structure which concerns on 2nd embodiment of this invention, and its vicinity.

Explanation of symbols

10 Outdoor unit (unit body)
12 bottom plate 31 compressor 50 support structure 60 support base 61A-66A pedestal (leg piece)
70 Upper plate 73 Overhanging portion 80 Anti-vibration rubber (vibration isolation means)
112 Bottom plate 112A Recess 150 Support structure 160 Support base

Claims (3)

The base plate of the unit main body is provided with an overhanging portion that protrudes in a plate-like shape to the side from the support plate, and this overhanging portion is accompanied by vibrations of a compressor or a gas engine or the like through vibration isolation means. Support the equipment ,
The support base includes a base plate and leg pieces that extend downward from the base plate and are fixed to the bottom plate,
In the air conditioner , wherein the overhanging portion projects from the support base in the vicinity of the leg piece to the side of the leg piece and is located in the vicinity of a fixing portion between the leg piece and the bottom plate . Support structure. The support structure in the air conditioner according to claim 1 , wherein an upper plate is disposed on the support base, and the upper plate includes the projecting portion. The support structure for an air conditioner according to claim 1 or 2 , wherein a recess is provided in the bottom plate, and an overhanging portion that protrudes from the support base floats above the recess.

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