JP7209591B2 - Package type compressor - Google Patents

Description

The present invention relates to a package type compressor.

There is a package-type compressor that improves the convenience of transportation and construction by housing various mechanisms involved in driving the compressor in a package. For example, Patent Literature 1 discloses a package-type compressor in which a compressor body, a motor for driving the compressor body, an air-cooled heat exchanger for cooling compressed air, and the like are housed in a package.

JP 2015-172371 A

In a package type compressor, an air intake is formed in the package, and various mechanisms in the package are cooled by the air taken in from the air intake. However, the package-type compressor disclosed in Patent Document 1 has a small intake port and depends on the outer shape of the motor. Therefore, the package-type compressor of Patent Document 1 has room for improvement in terms of air intake performance and cooling performance.

An object of the present invention is to improve air intake performance and cooling performance in a package type compressor.

The present invention comprises a box-shaped package having an inlet and an outlet, a compressor body for compressing gas in the package, a motor for driving the compressor body in the package, and the an air-cooled heat exchanger for exchanging heat between a cooling gas taken in from an intake port and exhausted from the exhaust port and a compressed gas compressed by the compressor body to cool the compressed gas; a cooling fan that blows air toward the air-cooled heat exchanger; and an intake duct member that constitutes at least a part of an intake flow path that is a flow path for the cooling gas and that extends from the intake port into the package. The package-type compressor is provided, wherein the intake port is provided on the side surface of the package over substantially the entire length in the height direction.

According to this configuration, the gas is compressed by the compressor body driven by the motor in the package. The compressed gas rises in temperature due to heat of compression, is cooled by an air-cooled heat exchanger, and is supplied to a destination outside the package. Also, the cooling gas is taken in from the intake port through the intake passage. The cooling gas cools various features within the package and is blown toward the air-cooled heat exchanger by a cooling fan. In an air-cooled heat exchanger, heat is exchanged between the cooling gas and the compressed gas, the compressed gas is cooled, and the cooling gas is heated. The cooling gas used for cooling the compressed gas in the air-cooled heat exchanger is exhausted from the exhaust port. In such a package type compressor, since the intake port is provided over substantially the entire length in the height direction on the side surface of the package, a sufficient amount of intake air can be secured. Therefore, the air intake performance can be improved, and a significant temperature rise in the package can be suppressed by sufficient intake air, so that the cooling performance can be improved.

The substantially total length in the height direction of the intake port may be 50% or more of the total length in the height direction of the side surface of the package.

With this configuration, it is possible to achieve air intake performance and cooling performance suitable for the package type compressor.

The air intake port and the air intake passage are partitioned into a plurality of divided air intake ports and a plurality of divided air intake passages, respectively, by the air intake duct member, and at least one of the divided air intake ports and the divided air intake passages pass through the package. The air intake duct member may be arranged so that the compressor main body and the cooling fan cannot be seen directly when viewed from the outside to the inside.

According to this configuration, the air intake duct member is arranged so that noise sources such as the compressor body and the cooling fan cannot be seen directly even if the inside of the package is viewed from the outside through at least one divided air intake port and divided air intake passage. It is In other words, since the intake duct member is arranged between the divided intake port and the noise source, the noise from the noise source needs to go around the intake duct member in order to leak out of the package. Therefore, it is possible to prevent the noise from the noise source from directly leaking from the divided intake port, so that the quietness of the package type compressor can be improved. In particular, when a large air intake is provided over the entire length of the side surface of the package in the height direction as described above, the noise leaking through the air intake may become large. It is effective for a package type compressor provided with

At least one of the divided air intake passages may be defined by the air intake duct member and an inner surface of the package.

According to this configuration, since the divided intake air passages are not composed only of the intake duct members, the installation amount of the intake duct members can be reduced. In addition, since the inner surface of the package is effectively used as a member that constitutes the divided air intake passages, additional members are not required, and the size of the package type compressor can be reduced.

The two adjacent split intake flow paths may partially share one intake duct member.

According to this configuration, it is not necessary to provide an air intake duct member for each divided air intake flow path, and the installation amount of the air intake duct member can be reduced.

At least one of said split intake channels may be curved.

According to this configuration, it is possible to prevent the noise that leaks out of the package through the divided air intake passage from linearly leaking out of the package, so that the quietness of the packaged compressor can be improved.

The package-type compressor may further include an external fan attached to the motor, and the intake passage may extend from the intake port to the external fan.

According to this configuration, the cooling gas reaches the external fan through the intake flow path, so that the flow of the cooling gas in the intake flow path can be promoted by the external fan. Therefore, intake performance and cooling performance can be further improved.

The external fan may be arranged at a lower portion within the package, and the plurality of divided air intakes may be arranged in a row in a vertical direction, and the divided air intakes located lower may have larger openings. .

According to this configuration, the lower the divided air intake port is, the larger the opening becomes. It means that the opening is wide. Therefore, the shorter the length of the split air intake passage, the more the flow rate of the cooling gas can be increased, so the pressure loss can be reduced and the air intake efficiency can be improved.

A larger sound absorbing material may be attached to the lower intake duct member constituting the divided intake flow path.

According to this configuration, as described above, when the lower divided air intake ports are opened larger, the lower divided air intake ports are more likely to leak noise. By sticking, it effectively suppresses leakage of noise.

An exhaust duct containing the cooling fan and extending from the motor to the air-cooled heat exchanger may be further provided.

According to this configuration, the flow of the cooling gas in the package can be defined by the exhaust duct, so the cooling performance can be further improved.

According to the present invention, in the package-type compressor, the intake port is provided on the side surface of the package over substantially the entire length in the height direction, so that the intake performance and the cooling performance can be improved.

1 is a front perspective view of a package type compressor according to an embodiment of the present invention; FIG. FIG. 2 is a rear perspective view of the package type compressor of FIG. 1; The front view which shows the inside of a package type compressor seen from arrow A1 direction of FIG. The side view which shows the inside of a package type compressor seen from arrow A2 direction of FIG. FIG. 4 is a first perspective view showing the arrangement of the air intake duct member within the package; The second perspective view showing the arrangement of the air intake duct member within the package. The third perspective view showing the arrangement of the air intake duct member within the package.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2, a package-type compressor 1 of the present embodiment accommodates various mechanisms involved in driving the compressor in a box-shaped package 10. As shown in FIG. In the following description, air is taken as an example of the compressed gas, but the type of compressed gas is not particularly limited. For convenience, the longitudinal direction of the package 10 is the X direction, the direction perpendicular to the X direction in the horizontal plane is the Y direction, and the height direction (vertical direction) of the package 10 is the Z direction.

The package-type compressor 1 of the present embodiment includes cooling air flow paths f1 to f3 (see FIGS. 3 and 4 described later) through which cooling air flows, and compressed air flow paths F1 to F6 through which compressed air flows (see diagrams to be described later). 3, 4) are provided. Compressed air is air compressed by a compressor main body 20, which will be described later. Cooling air is air for cooling various mechanisms inside the package 10 rather than air that is compressed.

The package 10 is made of a metal plate such as a steel plate, and specifically includes four side surfaces 11 to 14, an upper surface 15, and a floor surface 16 (see FIGS. 3 and 4 described later). The package 10 is provided with an intake port 11a for sucking cooling air, an exhaust port 15a for discharging cooling air, an intake port 12a for sucking compressed air, and a discharge port 11b for discharging compressed air. ing. In other words, the cooling air passages f1-f3 extend from the intake port 11a to the exhaust port 15a, and the compressed air passages F1-F6 extend from the suction port 12a to the discharge port 11b.

The intake port 11 a is provided on the side surface 11 of the package 10 . Specifically, the intake port 11a is provided on the side surface 11 of the package 10 over substantially the entire length in the height direction (Z direction). The approximate total length in the height direction (Z direction) of the air inlet 11a may be, for example, 50% or more of the height of the side surface 11 of the package 10, or 65% or more. Moreover, the intake port 11 a occupies about 40% of the area of the side surface 11 .

The intake port 11a is formed by gathering a plurality of holes. In this embodiment, the plurality of oblong holes are arranged substantially evenly, but the mode is not particularly limited.

The exhaust port 15 a is provided approximately in the center of the upper surface 15 of the package 10 and occupies about 30% of the area of the upper surface 15 . In the present embodiment, the exhaust port 15a is formed by gathering a plurality of oval holes like the intake port 11a, but the mode is not particularly limited.

A suction port 12a is provided on a side surface 12 opposite to the side surface 11 on which the suction port 11a is formed. The suction port 12a is a portion that sucks air to be compressed. Similar to the intake port 11a and the exhaust port 15a, a plurality of oval holes are collectively formed. The intake port 12a is formed smaller than the intake port 11a and the exhaust port 15a. An intake port 12b for sucking cooling air is formed below the intake port 12a. Inside the package 10, a soundproof wall 17 (see FIGS. 3 and 4) is provided adjacently facing the intake port 12b. The soundproof wall 17 can suppress leakage of noise from the intake port 12b. However, the intake port 12b does not necessarily have to be provided.

A discharge port 11b is also provided on the side surface 11 in which the intake port 11a is formed. The discharge port 11b is a portion for discharging compressed air. The discharge port 11b is provided at the upper corner of the side surface 11 of the package 10 adjacent to the intake port 11a.

3 is a view of the package 10 from the direction of arrow A1 (see FIG. 1) with one side 13 of two opposing side surfaces (side walls) 13 and 14, which are not provided with the air inlet 11a and the air inlet 12a, removed. It is the front view which looked at the inside. 4 is a side view of the inside of the package 10 viewed from the direction of arrow A2 (see FIG. 2) with the side surface (side wall) 12 removed. In FIG. 3, a part of the exhaust duct 41, which will be described later, is also removed so that the inside of the exhaust duct 41 can be seen.

The configuration of the compressed air flow paths F1 to F6 will be described with reference to FIGS.

A compressor body 20, an oil recovery device 30, and an air-cooled heat exchanger 40 are arranged in the compressed air flow paths F1 to F6 in the package 10. As shown in FIG.

The compressor main body 20 is fixed to the floor surface 16 inside the package 10 and has a suction portion 21 and a discharge portion 22 . The suction part 21 is fluidly connected to the suction port 12a through the pipe 5a, that is, connected to the outside air. The compressor main body 20 sucks air from the suction port 12a (see arrow F1), compresses the air sucked from the suction portion 21 (see arrow F2), and discharges it from the discharge portion 22 (see arrow F3). A bellows channel portion 23 and a suction filter 24 are interposed in the pipe 5a that fluidly connects the suction portion 21 and the suction port 12a. In the compressed air flow paths F1 and F2, the suction port 12a, the bellows flow path section 23, the suction filter 24, and the suction section 21 of the compressor main body 20 are arranged in this order.

The bellows channel portion 23 is a box-shaped member having a bellows-shaped internal channel (not shown). This bellows-shaped flow path prevents air (that is, sound waves) from traveling in a straight line and prevents noise inside the package 10 from directly leaking out of the package 10 through the suction port 12a. Preferably, a sound absorbing material is attached to the inner surface of the bellows flow path portion 23 . The sound absorbing material may be, for example, a nonwoven fabric made of a plurality of fibers to form a mesh, or a porous urethane sponge. The same sound absorbing material can be used as the sound absorbing material referred to hereinafter.

The suction filter 24 is a component that removes dust from the air sucked through the suction port 12 a and the bellows channel portion 23 . Intake filter 24 may be general purpose. The air from which dust has been removed by the suction filter 24 is sent to the suction portion 21 of the compressor body 20 (see arrow F2) and compressed by the compressor body 20 .

The compressor main body 20 of this embodiment is of a screw type. A pair of male and female screw rotors (not shown) are arranged in the compressor main body 20 . The screw rotor is mechanically connected to the motor 25 and can be driven to rotate. Air is compressed in the compressor main body 20 by rotating the pair of male and female screw rotors in mesh with each other. An external fan 26 is attached to the motor 25 . In this embodiment, the external fan 26 is an axial fan that rotates by receiving rotational driving force from the motor 25 . The motor 25 is also fixed on the floor 16 inside the package 10 in the same manner as the compressor body 20 . Therefore, the compressor main body 20 , the motor 25 and the external fan 26 are arranged in the lower part of the package 10 .

Further, the compressor main body 20 is of an oil supply type. Therefore, oil is supplied to the screw rotors in the compressor body 20 for cooling, lubrication, and sealing. Here, the oil used for cooling, lubrication, and sealing is discharged from the discharge portion 22 together with the compressed air (see arrow F3). A discharge portion 22 of the compressor main body 20 is fluidly connected to an oil recovery device 30 through a pipe 5b, and compressed air containing oil is supplied to the oil recovery device 30 (see arrow F4).

Referring to FIG. 4 , oil recovery device 30 has a substantially columnar shape extending in the vertical direction (Z direction), and separates and recovers oil from the oil-containing compressed air discharged from compressor body 20 . The recovered oil is stored in the oil recovery device 30 and supplied to the compressor main body 20 again. The oil recovery device 30 is fluidly connected to the air-cooled heat exchanger 40 through the pipe 5c, and the compressed air from which the oil is separated by the oil recovery device 30 is supplied to the air-cooled heat exchanger 40 through the pipe 5c. (see arrow F5).

In the air-cooled heat exchanger 40, heat is exchanged between the compressed air supplied through the pipe 5c and cooling air, which will be described later. Compressed air supplied to the air-cooled heat exchanger 40 is heated by heat of compression when compressed by the compressor main body 20 . The cooling air supplied to the air-cooled heat exchanger 40 has approximately the same temperature as the normal temperature air outside the package 10 . Therefore, the heat exchange within the air-cooled heat exchanger 40 cools the compressed air and heats the cooling air. As will be described later, the air-cooled heat exchanger 40 is arranged directly below the exhaust port 15a, and the cooling air heated when passing through the air-cooled heat exchanger 40 is exhausted from the exhaust port 15a. The air-cooled heat exchanger 40 is fluidly connected to the discharge port 11b through the pipe 5d, and the compressed air cooled by the air-cooled heat exchanger 40 is discharged from the discharge port 11b to a supply destination (not shown). supplied (see arrow F6 in FIG. 3).

The configuration of the cooling air flow paths f1 to f3 will be described with reference to FIGS.

The cooling air flow paths f1 to f3 in the package 10 include an intake duct member 50, an external fan 26, a motor 25, a compressor body 20, a turbo fan (cooling fan) 42, and an air-cooled heat exchanger. A vessel 40 is arranged.

An intake duct member 50 extending into the package 10 is attached to the intake port 11a. The intake duct member 50 constitutes at least part of the intake flow path f1. Here, the intake flow path f1 is part of the cooling air flow paths f1 to f3. Specifically, the air intake flow path f1 is a flow path through which cooling air is drawn, and extends from the air intake port 11a to the external fan 26. As shown in FIG.

The intake port 11a is partitioned by an intake duct member 50 into a plurality of (three in this embodiment) divided intake ports 11a1 to 11a3. The divided intake ports 11a1 to 11a3 are arranged side by side in the vertical direction (Z direction) on the side surface 11 of the package . The divided intake ports 11a1 to 11a3 are more open toward the bottom (see FIG. 1). In this embodiment, the middle stage divided intake port 11a2 has an opening area that is, for example, approximately 1.3 times as large as that of the upper stage divided intake port 11a1. Further, the divided intake port 11a3 in the lower stage has an opening area, for example, about 2.3 times as large as that of the divided intake port 11a1 in the upper stage.

The air intake passage f1 is partitioned by an air intake duct member 50 into a plurality of (three in this embodiment) divided air intake passages f1-1 to f1-3. Specifically, the divided intake passages f1-1 to f1-3 are provided corresponding to the divided intake ports 11a1 to 11a3, respectively. The divided air intake flow paths f1-1 to f1-3 join at an external fan 26 arranged at the bottom of the package 10. As shown in FIG. Therefore, the divided intake flow path f1-1 extending from the divided intake port 11a1 in the upper stage is the longest flow path, and the divided intake flow path f1-2 extending from the divided intake port 11a2 in the middle stage is the second longest flow path, The divided intake passage f1-3 extending from the lower divided intake port 11a3 is the shortest passage. Details of the divided intake flow paths f1-1 to f1-3 will be described later.

The cooling air that has reached the external fan 26 through the divided intake flow paths f1-1 to f1-3 is blown by the external fan 26 to cool the motor 25 and the compressor main body 20 adjacent to the external fan 26 .

An exhaust duct 41 having a rectangular shape in plan view and extending in the vertical direction (Z direction) to the air-cooled heat exchanger 40 is installed near and above the motor 25 . That is, exhaust duct 41 extends from motor 25 to air-cooled heat exchanger 40 . A turbo fan 42 that is a centrifugal blower is arranged in the exhaust duct 41 . The turbo fan 42 blows air toward the air-cooled heat exchanger 40 , and defines the air flow direction within the exhaust duct 41 . In the present embodiment, the cooling air flows from bottom to top in FIG. 3 (see arrows f2 and f3).

As described above, the air-cooled heat exchanger 40 is arranged directly below the exhaust port 15 adjacent to the exhaust port 15a. Therefore, the cooling air that flows upward through the exhaust duct 41 and reaches the air-cooled heat exchanger 40 is heated by the air-cooled heat exchanger 40 and then exhausted from the exhaust port 15a (arrow f3 reference). As described above, at this time, the compressed air is cooled by exchanging heat with the cooling air.

The divided intake flow paths f1-1 to f1-3 will be described in detail with reference to FIGS. 5 to 7 are perspective views of the air inlet 11a and its vicinity from the inside of the package 10. FIG. 6 shows a state in which the cover plate 53 of FIG. 5 is removed, and FIG. 7 shows a state in which the cover plate 54 of FIG. 6 is removed. 5 to 7, some components may be omitted for clarity of illustration.

The air intake duct member 50 is a member that forms an air intake flow path f1 extending from the air intake port 11a to the external fan 26 (see also FIG. 3). The intake duct member 50 includes two U-shaped members 51 and 52 (see FIG. 7 in particular) and two cover plates 53 and 54 (see FIG. 5 in particular).

The lower divided air intake passage f1-3, which has the largest cross section among the divided air intake passages, is composed of a U-shaped member 52 and a cover plate 54. As shown in FIG. The U-shaped member 52 has a U-shape that opens downward when viewed from the intake direction (X direction) (see FIG. 7), and is attached to the divided intake port 11a3. A cover plate 54 is attached to the U-shaped member 52 so as to face the side surface 11 . With this configuration, in the split air intake flow path f1-3, the cooling air taken in in the horizontal direction (X direction) from the split air intake port 11a3 hits the cover plate 54 and changes its direction vertically downward (down in the Z direction). It hits the floor surface 16 and turns in the horizontal direction (X direction) to reach the external fan 26 (see FIG. 3).

The intermediate divided intake air passage f1-2, which has the second largest passage cross section among the divided air intake passages, is composed of U-shaped members 51 and 52 and cover plates 53 and 54. As shown in FIG. The U-shaped member 51 has a U-shape that opens downward when viewed from the intake direction (X direction), and is attached to the divided intake port 11a2. A cover plate 53 is attached to the U-shaped member 51 so as to face the side surface 11 . The U-shaped members 51 and 52 are arranged vertically adjacent to each other, and the U-shaped member 51 extends longer in the intake direction (X direction) than the U-shaped member 52 (see also FIG. 3). In this embodiment, the cover plate 53 also constitutes part of the exhaust duct 41 and extends approximately to the upper surface 15 of the package 10 . With this configuration, in the split air intake passage f1-2, the cooling air taken in in the horizontal direction (X direction) from the split air intake port 11a2 hits the cover plate 53 and changes direction vertically downward (down in the Z direction). It flows downward along the cover plate 54, hits the floor surface 16, turns in the horizontal direction (X direction), and reaches the external fan 26 (see FIG. 3).

Here, the U-shaped member 52 forming the upper surface of the divided intake flow path f1-3 in the lower stage also forms the lower surface of the divided intake flow path f1-2 in the middle stage. Therefore, two adjacent split intake flow paths f1-2 and f1-3 share one U-shaped member 52 partially. In other words, the two divided intake flow paths f1-2 and f1-3 are partially partitioned by one U-shaped member 52. As shown in FIG.

The upper split air intake channel f1-1, which has the smallest channel cross section among the split air intake channels, is composed of the U-shaped members 51 and 52, the cover plates 53 and 54, and the inner surface of the package . With this configuration, in the divided air intake passage f1-1, the cooling air taken in in the horizontal direction (X direction) from the divided air intake port 11a1 hits the cover plate 53 and is divided into left and right in the horizontal direction (left and right in the Y direction) and changed direction. After that, it hits the inner surface of the package 10, etc., changes direction vertically downward (downward in the Z direction), flows downward along the inner surface of the package 10, hits the floor surface 16, changes direction horizontally (X direction), and becomes an external fan fan. 26 (see FIG. 3).

Here, the U-shaped member 51 forming the upper surface of the divided intake flow path f1-2 in the middle stage also forms the lower surface of the divided intake flow path f1-1 in the upper stage. Therefore, two adjacent divided intake flow paths f1-1 and f1-2 share one U-shaped member 51 partially. In other words, the two divided intake flow paths f1-1 and f1-2 are partially partitioned by one U-shaped member 51. As shown in FIG.

As described above, in the present embodiment, the divided intake flow paths f1-1 to f1-3 are not formed linearly, but formed so that the divided intake flow paths f1-1 to f1-3 are curved by the intake duct member 50. It is Therefore, when the inside of the package 10 is viewed from the outside through the divided intake ports 11a1 to 11a3 and the divided intake passages f1-1 to f1-3, the intake duct member 50 blocks noise sources (compressor body 20, turbo The fan 42, the external fan 26, the oil collector 30, and the various pipes 5a-5d) are substantially hidden from direct view. Specifically, when the inside of the package 10 is viewed from the outside through the divided intake ports 11a1 and 11a2 in the upper and middle stages, the source of the noise is blocked by the intake duct member 50 and cannot be seen directly through the divided intake ports 11a3 in the lower stage. When the inside of the package 10 is viewed from the outside, it is possible to directly see the external fan 26 that is the source of noise and the motor 25 that can be another source of noise.

A sound absorbing material 55 is attached to the inner surfaces of the U-shaped member 52 and the cover plate 53 that constitute the lower divided intake flow path f1-3 having the largest flow path cross section.

A sound absorbing material 55 is attached to the inner surface of the U-shaped member 51 that constitutes the middle stage divided intake flow path f1-2 having the second largest flow path cross section. Although the sound absorbing material 55 is not attached to the cover plate 54 in this embodiment, it may be attached. Therefore, the sound absorbing material 55 attenuates the sound wave that propagates through the divided intake flow path f1-2, which has the second largest cross section among the divided intake flow paths.

No sound absorbing material 55 is attached to the outer surface of the U-shaped member 51 that constitutes the upper divided intake air flow path f1-1 having the smallest flow path cross section. However, a sound absorbing material 55 is attached to a part of the inner surface of the package 10 that constitutes the upper divided intake flow path f1-1.

Comparing the area of the attached sound absorbing material 55, the larger the sound absorbing material 55 is attached, the lower the intake duct member 50 constituting the divided intake flow path. As a result, the sound absorbing effect of the sound absorbing material 55 is set to be higher in the lower divided air intake passages. That is, the sound absorption effect is set to be higher for the divided intake air passages having a larger flow rate of the cooling air.

The package type compressor 1 of this embodiment has the following effects.

According to the package-type compressor 1 of the present embodiment, the intake port 11a is provided over substantially the entire length of the side surface 11 of the package 10 in the height direction (Z direction), so a sufficient amount of intake air can be ensured. Therefore, the air intake performance can be improved, and the sufficient intake air can suppress a significant temperature rise in the package 10, thereby improving the cooling performance.

Preferably, the overall length in the height direction (Z direction) of the intake port 11a is set to 50% or more of the total length in the height direction (Z direction) of the side surface 11 of the package 10. Therefore, the package type compressor 1 air intake performance and cooling performance suitable for

In the configuration of this embodiment, the air intake duct member 50 is arranged so that the noise source cannot be seen directly even when the inside of the package 10 is viewed from the outside through at least one divided air intake port and divided air intake passage. In other words, since the air intake duct member 50 is arranged between the divided air intake and the noise source, the noise from the noise source needs to go around the air intake duct member 50 in order to leak out of the package 10 . Therefore, noise from the noise source can be prevented from leaking directly from the divided intake port, so that the quietness of the package-type compressor 1 can be improved. In particular, when the large intake port 11a extending over the entire height direction (Z direction) of the side surface 11 of the package 10 is provided as described above, the noise leaking through the intake port 11a may also increase. This configuration is effective for the package type compressor 1 provided with such a large intake port 11a.

Since the divided air intake flow path f1-1 is not composed of only the air intake duct member 50, the installation amount of the air intake duct member 50 can be reduced. In addition, since the inner surface of the package 10 is effectively used as a member forming the divided intake flow path f1-1, no additional member is required, and the package type compressor 1 can be made smaller.

Two adjacent divided air intake passages f1-1 and f1-2 partially share the U-shaped member 51 (air intake duct member 50), and two adjacent divided air intake passages f1-2 and f1-3 share a U-shaped member. The character-shaped member 52 (air intake duct member 50) is partially shared. Therefore, it is not necessary to provide the air intake duct member 50 for each divided air intake flow path, and the installation amount of the air intake duct member 50 can be reduced.

Since the divided intake flow paths f1-1 to f1-3 are each curved, the noise leaking out of the package 10 through the divided intake flow paths f1-1 to f1-3 is prevented from leaking out of the package 10 in a straight line. can be prevented. Therefore, the quietness of the package type compressor 1 can be improved.

Since the external fan is provided and the cooling air reaches the external fan 26 through the air intake passage f1, the external fan 26 can promote the flow of the cooling air in the air intake passage f1. Therefore, intake performance and cooling performance can be further improved.

Since the lower divided air intake ports are more open, the closer the divided air intake ports are to the external fan 26 (end point of the air intake duct member 50) located lower in the package 10, the larger the open air intake ports are. It means that Therefore, the shorter the length of the split air intake passage, the more the flow rate of the cooling air can be increased, so the pressure loss can be reduced and the air intake efficiency can be improved.

As described above, when the lower divided air intake ports are opened larger, the lower divided air intake ports are more likely to leak noise. Efficiently suppresses noise leakage.

Since the exhaust duct 41 can regulate the flow of the cooling air inside the package 10, the cooling performance can be further improved.

As described above, specific embodiments of the present invention have been described, but the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

1 package type compressor 5a-5d piping 10 package 11-14 side (side wall)
11a suction port 11a1 to 11a3 divided suction port 11b discharge port 12a suction port 12b suction port 15 upper surface 15a exhaust port 16 floor surface 17 soundproof wall 20 compressor body 21 suction section 22 discharge section 23 bellows flow path section 24 suction filter 25 motor 26 External fan 30 Oil collector 40 Air-cooled heat exchanger 41 Exhaust duct 42 Turbo fan (cooling fan)
50 intake duct member 51, 52 U-shaped member 53, 54 cover plate 55 sound absorbing material

Claims (7)

a box-shaped package having an inlet and an outlet;
a compressor body for compressing gas within the package;
a motor that drives the compressor body within the package;
Air-cooled heat exchanger for cooling the compressed gas by exchanging heat between the cooling gas taken in from the intake port and exhausted from the exhaust port and the compressed gas compressed by the main body of the compressor in the package. vessel and
a cooling fan that blows air toward the air-cooled heat exchanger within the package;
an air intake duct member forming at least a part of an air intake passage extending from the air inlet into the package, which is the flow passage for the cooling gas;
The intake port is provided on the side surface of the package over 50% or more of the total length in the height direction,
The air intake port and the air intake channel are partitioned into a plurality of divided air intake ports and a plurality of divided air intake channels by the air intake duct member,
The air intake duct member is arranged so that the compressor body and the cooling fan cannot be viewed directly from the outside of the package through at least one of the divided air intakes and the divided air intake passages, and
A package-type compressor, wherein a plurality of divided intake ports are arranged in a line in a vertical direction, and the divided intake port arranged downward is the largest . 2. The packaged compressor according to claim 1 , wherein at least one of said divided intake flow paths is formed by said intake duct member and an inner surface of said package. 3. The package-type compressor according to claim 1, wherein two adjacent divided intake flow paths partially share one intake duct member. 4. The packaged compressor according to any one of claims 1 to 3 , wherein at least one of said divided intake air passages is curved. Further comprising an external fan attached to the motor,
The package type compressor according to any one of claims 1 to 4 , wherein the intake flow path extends from the intake port to the external fan. The package-type compressor according to any one of claims 1 to 5, wherein a larger sound absorbing material is attached to the intake duct member that constitutes the divided intake flow path in the lower part. 7. The packaged compressor according to any one of claims 1 to 6 , further comprising an exhaust duct housing said cooling fan and extending from said motor to said air-cooled heat exchanger.

Images