WO2016194756A1

WO2016194756A1 - Air compression device

Info

Publication number: WO2016194756A1
Application number: PCT/JP2016/065549
Authority: WO
Inventors: 将黒光; 洋司高嶋; 裕中川; 高橋　亮; 辰雄宮内; 充良浜崎; 源平田中; 徹水船
Original assignee: ナブテスコ株式会社
Priority date: 2015-05-29
Filing date: 2016-05-26
Publication date: 2016-12-08
Also published as: SG11201709474YA; TW201704639A; JPWO2016194756A1; JP6812344B2; EP3306085A4; EP3306085B1; CN107614871B; CN107614871A; EP3306085A1; TWI617739B

Abstract

An air compression device (X1) comprising: a case (10) having a cooling air inflow port (10b) that causes cooling air to flow inside; and a fan device unit (14) having an intake port (14a) that sucks in cooling air that has flowed inside the case (10) through the cooling air inflow port (10b) and sends cooling air that has been sucked in from the intake port (14a) towards the compressor unit (19). The intake port (14a) of the fan device unit (14) is arranged such that the cooling air inside the case (10) is swirled and sucked in towards the intake port (14a).

Description

Air compressor

The present invention relates to an air compression device.

Conventionally, an air compressor that is mounted on a vehicle or the like and generates compressed air used in the vehicle is known. As such an air compressor, Patent Literature 1 describes an air compressor including a housing case, a compressor and a compression driving unit housed in the housing case. In the air compressor of Patent Document 1, the compression drive unit is coupled to the compressor. When the compression drive unit drives the compressor, compressed air used in the vehicle is generated.

The air compressor of Patent Document 1 further includes a cooling fan for cooling the compressor and the compression drive unit. The cooling fan is directly connected to the compression drive unit, and generates an airflow in a direction in which the compression drive unit and the compressor are aligned. Here, the housing case is provided with a filter portion facing the cooling fan in the direction of the airflow generated by the cooling fan. That is, in the air compressor of Patent Document 1, the filter unit, the cooling fan, the compression drive unit, and the compressor are arranged side by side in the direction of the airflow generated by the cooling fan. Then, the air that has flowed into the housing case through the filter unit is guided to the compression drive unit and the compressor so as to advance straight by the cooling fan. Thereby, the said compression drive part and a compressor are cooled.

In the air compressor of Patent Document 1, the air that has flowed into the housing case through the filter portion travels straight toward the cooling fan and is guided to the compressor. For this reason, the cooling fan sucks in air that goes straight in the housing case. For this reason, in the air compressor of Patent Document 1, it is not possible to sufficiently obtain sound attenuation due to the air flow in the housing case, and there is a possibility that a large noise is generated in the cooling fan.

JP 2011-226285 A

An object of the present invention is to provide an air compressor that can reduce noise.

An air compression device according to one aspect of the present invention has a housing having an inflow port for allowing air to flow therein, and a suction port for sucking air that has flowed into the housing through the inflow port, and has been sucked from the suction port. And a fan device unit that sends out air toward the compressor. The suction port of the fan device unit is arranged so that the air in the housing is drawn in toward the suction port.

It is the schematic diagram which looked at the railway vehicle carrying the air compressor which concerns on 1st Embodiment from the side. It is the schematic diagram which looked at the rail vehicle shown in FIG. 1 from the top, Comprising: A rail, a sleeper, and an air compressor are each shown with the dashed-two dotted line. It is a perspective view showing a schematic structure of an air compressor concerning a 1st embodiment. It is a perspective view which shows schematic structure of the air compressor which concerns on 1st Embodiment, Comprising: It is a figure of the state which saw through the side part of the said housing | casing in the state which removed the panel unit and the filter panel from the housing | casing. It is the figure which looked at the inside of the case of the air compressor concerning a 1st embodiment from the side. It is a perspective view which shows schematic structure of the motor accommodated in 2nd accommodation space S2 of a housing | casing among the air compression apparatuses which concern on 1st Embodiment. It is the figure which looked at the inside of the housing | casing of the air compressor which concerns on 1st Embodiment from upper direction, Comprising: It is the figure which saw through the inside of the compression air filter and a guide path. It is the perspective view which looked at the panel unit of the air compressor concerning a 1st embodiment from back. It is a perspective view which shows schematic structure of the adapter of the panel unit which concerns on 1st Embodiment. It is sectional drawing which shows schematic structure of the air compressor which concerns on 1st Embodiment, Comprising: It is the figure which showed the flow of the air which cools a compressor unit. It is a front perspective view which shows schematic structure of the air compressor which concerns on 2nd Embodiment. It is a side perspective view showing the schematic structure of the air compressor concerning a 2nd embodiment, and is a figure which saw through the side and upper part of a case. It is the figure which looked at the inside of the case of the air compressor concerning a 2nd embodiment from the upper part.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, each drawing referred to below is a simplified illustration of only the main members of the constituent members of the air compressors X1 and X2 according to the present embodiment for convenience of explanation. Therefore, the air compressors X1 and X2 according to the present embodiment can include arbitrary constituent members that are not shown in the drawings referred to in this specification.

(First embodiment)
1 and 2 show a railway vehicle 100 equipped with an air compression device X1 according to the first embodiment. The compressed air generated by the air compressor X1 is used to operate various pneumatic devices such as a brake device or a door opening / closing device mounted on the railway vehicle 100. The air compressor X1 may not be mounted on the railway vehicle 100 but may be mounted on a device such as another vehicle on which a pneumatic device is mounted.

The railway vehicle 100 includes a floor portion 100a, an upper wall portion 100b located above the floor portion 100b, and a pair of

side wall portions

100c and 100d extending in the vertical direction so as to connect the floor portion 100a and the upper wall portion 100b. ,have. Moreover, the rail vehicle 100 has the wheel attached to the floor part 100a, and the door part attached to the

side wall parts

100c and 100d. A user of the railway vehicle 100 gets into the interior of the railway vehicle 100 through a door part attached to the side wall part 100c or the side wall part 100d from the platform of the station. As shown in FIG. 2, the railcar 100 travels along the rail 101 on a track constituted by a sleeper 102 and a rail 101 extending in a direction orthogonal to the sleeper 102. A direction in which the sleepers 102 extend is referred to as a first direction A1, a direction orthogonal to the first direction A1 and a direction in which the rails 101 extend is referred to as a second direction B1.

The air compressor X1 is attached to the floor 100a of the railway vehicle 100 from below as shown in FIG. Moreover, as shown in FIG. 2, the air compressor X1 is arrange | positioned in the 1st direction A1 at the side near the side wall part 100c rather than the side wall part 100d.

Next, the air compressor X1 will be specifically described with reference to FIGS. 3 and 4 in addition to FIGS. FIG. 3 is a perspective view showing a schematic configuration of the air compressor X1. FIG. 4 is a diagram of a state in which a panel unit 11 and a filter panel 16 (to be described later) are removed from the air compressor X1 shown in FIG. FIG. 5 is a view of the air compression device X1 viewed from the second direction B1, and is a view seen through a side surface of the housing 10 to be described later.

As shown in FIGS. 3 to 5, the air compression device X1 is mainly disposed outside the housing 10, the motor unit 17 and the compressor unit 19 housed in the housing 10, and the housing 10. And a controller unit 18. In the air compressor X1, the compressor unit 19 is driven in conjunction with the motor unit 17 driven by the controller unit 18. Thereby, the air which flowed into the compressor from the outside of the housing 10 is compressed.

The housing 10 accommodates various members provided in the air compression device X1 such as the motor unit 17 and the compressor unit 19. In the first embodiment, the housing 10 is fixed to the floor portion 100a so as to be suspended below the floor portion 100a of the railway vehicle 100 via the suspension member 200. Specifically, the housing 10 has a substantially hexahedron shape having an upper part 10A and a lower part 10B that face each other, a front part 10D and a rear part 10E that face each other, and one side part and the other side part that face each other. I am doing. The space surrounded by the upper part 10A, the lower part 10B, the front part 10D, the rear part 10E, one side part, and the other side part is an accommodation space that accommodates various members included in the air compression device X1.

In the first embodiment, the air compressor X1 has an upper portion 10A facing the floor portion 100a, a front portion 10D located on the side wall portion 100c side in the first direction A1, and a side wall portion 100d side (in the vehicle width direction). It is mounted on the railway vehicle 100 in a posture in which the rear portion 10E is located on the center side.

As shown in FIG. 4, the housing 10 has an intermediate portion 10 C provided between the upper portion 10 A and the lower portion 10 B so as to divide the accommodation space inside the housing 10 into two. In the first embodiment, as shown in FIGS. 4 and 5, the space formed between the upper part 10 A and the intermediate part 10 C in the housing space inside the housing 10 houses the compressor unit 19. One storage space S1 is formed, and a space formed between the intermediate portion 10C and the lower portion 10B is a second storage space S2 in which the compressor unit 19 is stored. That is, in the first embodiment, the motor unit 17 and the compressor unit 19 are arranged so as to be shifted from each other in the vertical direction C1. Thereby, the occupation area in the horizontal direction of the air compressor X1 can be made small.

In the first embodiment, the housing 10 has a substantially hexahedral shape, but is not limited thereto. The shape of the housing 10 is arbitrary, and can be appropriately changed according to the size and arrangement of various members accommodated in the housing 10.

Also, the intermediate portion 10C may not be provided. For example, the compressor unit 19 and the motor unit 17 may be arranged so as to be displaced in the vertical direction C1 by fixing the compressor unit 19 to the upper part 10A and fixing the motor unit 17 to the lower part 10B.

The motor unit 17 is housed in the first housing space S1 inside the housing 10 as shown in FIG. The motor unit 17 has a first motor 17A and a second motor 17A. The first motor 17A and the second motor 17A are arranged side by side as shown in FIG. In the first embodiment, the direction in which the first motor 17A and the second motor 17A are arranged is parallel to the second direction B1. The first motor 17A and the second motor 17A have the same structure and are arranged in a symmetric posture in the second direction B1. Hereinafter, the first motor 17A will be described.

The first motor 17A has an output shaft 171, a motor body 172, a motor fan 173, and a drive pulley 174.

The output shaft 171 protrudes from the motor main body 172 to one side of the housing 10. The drive pulley 174 is attached to the protruding output shaft 171. Thereby, the motor main body 172 and the drive pulley 174 are aligned in the axial direction of the output shaft 171. In the first embodiment, the first motor 17A is arranged such that the motor body 172 and the drive pulley 174 are aligned in the second direction B1.

A plurality of cooling fins 172 a are formed on the outer peripheral surface of the motor body 172. Each cooling fin 172 a extends along the axial direction of the output shaft 171, and is arranged with a gap in the circumferential direction of the motor main body 172.

The motor fan 173 generates an air flow for cooling the motor body 172. The motor fan 173 is attached coaxially to the motor body 172 and the drive pulley 174. That is, the motor fan 173 is attached to the output shaft 171. The motor fan 173 is located on the opposite side of the drive pulley 174 with the motor main body 172 interposed therebetween. That is, in the first embodiment, the motor fan 173 is located closer to the second motor 17B than the drive pulley 174 in the second direction B1.

The motor fan 173 is driven according to the rotation of the output shaft 171 accompanying the driving of the motor body 172, and generates an air flow in the second accommodation space S2 inside the housing 10. The airflow passes between the cooling fins 172a and flows in the second accommodation space S2 along the second direction B1.

The controller unit 18 is attached to the rear portion 10E of the casing 10 outside the casing 10. The controller unit 18 includes a box-shaped member and a controller that is housed in the box-shaped member and controls driving of the motor unit 17. The motor body 172 of each of the

motors

17A and 17B is driven by the controller unit 18. The controller unit 18 may accommodate various electronic components in addition to the controller that controls the driving of the motor unit 17.

The compressor unit 19 is accommodated in the second accommodating space S2 inside the housing 10 as shown in FIG. Specifically, the compressor unit 19 is mounted on the intermediate portion 10 C of the housing 10. The compressor unit 19 includes a first compressor 19A and a second compressor 19B. The first compressor 19A and the second compressor 19B are arranged side by side. The first compressor 19A is disposed above the first motor 17A, and the second compressor 19B is disposed above the second motor 17A in the vertical direction C1. For this reason, in the first embodiment, the first compressor 19A and the second compressor 19B are arranged in the second direction B1.

The first compressor 19A and the second compressor 19B have the same structure. The first compressor 19 A and the second compressor 19 B are arranged in a mutually symmetrical posture and spaced apart from each other so that the respective suction ports face each other in the second direction B 1. Hereinafter, the first compressor 19A will be described.

The first compressor 19A has a compressor body 19a, a drive pulley 19b, and an input shaft 19c.

The input shaft 19c protrudes from the compressor body 19a toward one side of the housing 10. The drive pulley 19b is attached to the protruding input shaft 19c. Thereby, the compressor main body 19a and the drive pulley 19b are arranged in the axial direction of the input shaft 19c. In the first embodiment, the first compressor 19A is arranged such that the compressor body 19a and the drive pulley 19b are arranged in the second direction B1. The drive pulley 19b of the first compressor 19A is disposed so as to overlap the drive pulley 174 of the first motor 17A in the vertical direction C1.

As shown in FIG. 4, an endless belt B is wound around the drive pulley 19b of the first compressor 19A and the drive pulley 174 of the first motor 17A. Specifically, a through-hole that communicates the first accommodation space S1 and the second accommodation space S2 is formed in the intermediate portion 10C of the housing 10 on the side portion side of the housing 10. The continuous through hole overlaps the drive pulleys 19b and 174 in the vertical direction C1. The belt B is arranged from the first accommodation space S1 to the second accommodation space S2 through the through hole, and is attached to the drive pulleys 19b and 174 in the accommodation spaces S1 and S2. The driving force is transmitted to the compressor main body 19a of the first compressor 19A through the input shaft 19c as the belt B circulates around the driving

pulleys

19b and 174 as the motor main body 172 of the first motor 17A is driven. The Thereby, the compressor main body 19a of the first compressor 19A generates compressed air.

As shown in FIGS. 5 and 7, the air compression device X1 includes a filter member 25 that allows air outside the housing 10 to flow into the inside, and a guide path 20 that guides air from the filter member 25 to the compressor body 19a. Further, an outflow pipe portion 21 for flowing out the compressed air generated in the compressor main body 19a from the compressor main body 19a, and an after cooler 22 for cooling the compressed air flowing through the outflow pipe portion 21 are further provided.

The guide path 20 is accommodated in the first accommodation space S1 inside the housing 10. Specifically, as shown in FIG. 7, the guide path 20 is disposed between the first compressor 19A and the second compressor 19B, and extends from the front portion 10D side to the rear portion 10E side. In the first embodiment, the guide path 20 extends along the first direction A1. The guide path 20 has an inflow opening 20a through which air flows in, and a first outflow opening 20b and a second outflow opening 20c through which the air flows into the first and

second compressors

19A, 19B. .

The inflow opening 20 a is formed on the surface of the guide path 20 that faces the front portion 10 D of the housing 10. One end of the filter member 25 is fitted into the inflow opening 20a of the guide path 20 via a trim seal. Thereby, the air that has flowed into the filter member 25 from the outside of the housing 10 flows into the guide path 20 through the inflow opening 20a.

The first outflow opening 20b is formed on the surface of the guide path 20 facing the first compressor 19A. The first outflow opening 20b is connected to a suction port in the first compressor 19A through an abbreviated connecting pipe. Thereby, the air that has flowed into the guide path 20 flows out of the guide path 20 through the first outflow opening 20b and flows into the first compressor 19A.

The second outflow opening 20c is formed on the surface of the guide path 20 facing the second compressor 19B. The second outflow opening 20c is connected to a suction port in the second compressor 19B through a symbolic connecting pipe. Thus, the air that has flowed into the guide path 20 flows out of the guide path 20 through the first outflow opening 20b and flows into the second compressor 19B.

The outflow piping section 21 includes a first outflow piping 21a connected to the compressor main body 19a of the first compressor 19A, a second outflow piping 21b connected to the compressor main body 19a of the second compressor 19B, a first outflow piping 21a, and a second outflow piping 21b. And a joining pipe 21d through which the compressed air joined in the manifold part 21c flows.

As shown in FIG. 4, the first outlet pipe 21a is connected to a surface of the first compressor 19A facing the second compressor 19B, extends to the front portion 10D side, and bends upward in the vicinity of the front portion 10D. , Extending toward the upper part 10A. The air flowing into the suction port of the compressor main body 19a in the first compressor 19A through the guide path 20 is compressed in the compressor main body 19a and flows out through the first outflow pipe 21a.

As shown in FIG. 4, the second outlet pipe 21b is connected to a surface of the second compressor 19B facing the first compressor 19A, extends to the front portion 10D side, and bends upward in the vicinity of the front portion 10D. , Extending toward the upper part 10A. The air flowing into the suction port of the compressor main body 19a in the second compressor 19B through the guide path 20 is compressed in the compressor main body 19a and flows out through the second outflow pipe 21b.

The manifold portion 21c is attached to the upper portion 10A of the housing 10 as shown in FIGS. Specifically, the manifold portion 21c is housed in the first housing space S1 inside the housing 10, and in the upper portion 10A, on the front portion 10D side between the first compressor 19A and the second compressor 19B. It is attached. The first and

second outflow pipes

21a and 21b are connected to the manifold portion 21c, whereby the compressed air flowing through the first outflow pipe 21a and the compressed air flowing through the second outflow pipe 21b merge in the manifold section 21c. .

As shown in FIG. 5, the joining pipe 21 d is connected to the manifold portion 21 c and extends from the front portion 10 D side to the rear portion 10 E side along the upper portion 10 A of the housing 10. The compressed air that has joined in the manifold portion 21c flows into the joining pipe 21d and flows from the front portion 10D side to the rear portion 10E side of the housing 10.

Here, as shown in FIG. 5, an outflow port 10 c that communicates the first accommodation space S 1 and the outside of the housing 10 is formed in a portion surrounding the first accommodation space S 1 in the rear portion 10 E of the housing 10. Has been. Specifically, the outflow port 10c is formed in a portion of the rear portion 10E on the upper 10A side. And outside the housing | casing 10, the external duct part 40 is attached to the rear part 10E so that the outflow port 10c may be covered. The joining pipe 21d extends from the front part 10D side to the rear part 10E side, and extends into an external duct part 40 provided outside the housing 10 through an outlet 10c formed in the rear part 10E.

The aftercooler 22 is attached to the rear portion 10E of the casing 10 outside the casing 10. The aftercooler 22 has a meandering pipe 22a, a protective cover 22b that accommodates the meandering pipe 22a, and a cooler fan 22c that sends air outside the housing 10 into the protective cover 22b.

The protective cover 22b is disposed outside and outside the housing 10 behind and above the external duct portion 40 attached to the rear portion 10E. The meandering pipe 22a extends while meandering inside the protective cover 22b in the second direction B1. The junction pipe 21d arranged in the external duct part 40 attached to the rear part 10E is connected to the meandering pipe 22a. The compressed air that has flowed through the merging pipe 21d flows into the meandering pipe 22a. The cooler fan 22c is disposed below the external duct portion 40 and between the rear portion 10E and the protective cover 22b. The cooler fan 22c sucks air outside the housing 10 and sends it out into the protective cover 22b.

As shown in FIGS. 3 and 4, the air compressor X1 further includes a filter panel 16 provided so that a cooling air inlet 10b formed in the front portion 10D of the housing 10 can be opened and closed.

The cooling air inlet 10b is formed to cool various members inside the casing 10 by allowing air to flow into the casing 10. The cooling air inlet 10 b is formed in the front portion 10 D of the housing 10. Specifically, the front portion 10D of the housing 10 has a beam portion 10d to which the intermediate portion 10C is fixed as shown in FIG. The beam portion 10d extends in parallel to the upper portion 10A and the lower portion 10B. The cooling air inlet 10b is formed between the beam portion 10d and the lower portion 10B, and has a substantially rectangular shape. Thereby, the cooling air inlet 10b communicates the outside of the housing 10 and the second accommodation space S2 inside the housing 10.

The filter panel 16 is attached to the front portion 10D of the housing 10 so as to cover the cooling air inlet 10b. As shown in FIGS. 3 and 5, the filter panel 16 includes a louver 161 in which a plurality of elongated plate-like members are assembled in parallel with a space between each other, and a filter portion 162 attached to the rear surface of the louver 161. Have. The louver 161 is attached to the front portion 10D of the housing 10 so that the filter portion 162 is fitted into the cooling air inlet 10b.

A hinge 161a and a lever lock 161b are attached to the louver 161. The hinge 161 a fixes the upper end portion of the louver 161 in the vertical direction C 1 to the front portion 10 D of the housing 10. The lever lock 161b detachably fixes the lower end portion of the louver 161 in the vertical direction C1 to the front portion 10D of the housing 10. Therefore, in the air compressor X1, the cooling air inlet 10b can be opened by opening the lever lock 161b and rotating the filter panel 16 about the hinge 161a.

Dust is removed from the air that has passed through the louver 161 at the filter unit 162. Then, the air from which the dust has been removed flows into the second housing space S2 inside the housing 10 through the cooling air inlet 10b.

Here, as shown in FIGS. 4 and 5, a through hole 10e is formed on the front portion 10D side of the intermediate portion 10C to penetrate the intermediate portion 10C in the vertical direction C1. The through hole 10 e is formed on the front part 10 D side with respect to the compressor unit 19 and the motor unit 17. In the first embodiment, the through hole 10e has a rectangular shape extending from the front of the first motor 17A to the front of the second motor 17B. The through hole 10e communicates the first accommodation space S1 and the second accommodation space S2. For this reason, the air that has flowed into the second housing space S2 inside the housing 10 through the cooling air inlet 10b can move to the first housing space S1 through the through hole 10e before reaching the motor unit 17. Is possible.

In the first embodiment, since a through hole through which the belt B passes is formed in a portion of the intermediate portion 10C on the side of the housing 10, the air flowing into the second accommodation space S2 is It is also possible to move to the first accommodation space S1 through the through hole.

The air compression device X1 further includes a panel unit 11 provided so as to be able to open and close an opening 10a formed in the front portion 10D of the housing 10 as shown in FIGS.

The opening 10a is formed for maintaining the compressor unit 19 and the like housed in the housing 10. The opening 10 a is formed in the front portion 10 D of the housing 10. Specifically, the opening 10a is formed between the beam portion 10d and the upper portion 10A, and has a substantially rectangular shape. Thereby, the opening 10 a communicates the outside of the housing 10 and the first accommodation space S 1 inside the housing 10. In the first embodiment, the opening 10a is located above the cooling air inlet 10b.

The panel unit 11 is attached to the front portion 10D of the housing 10 so as to cover the opening 10a. As shown in FIG. 8, the panel unit 11 includes a panel member 12, a sound absorbing member 13 attached to a part of the panel member 12, a fan device unit 14 fixed to the panel member 12, and the fan device. And an adapter unit 15 fixed to the unit 14.

The panel member 12 is provided so that the opening 10a can be opened and closed. The panel member 12 includes a main body 121 and a bulging portion 122 that bulges from the main body 121 toward the outside of the housing 10.

The main body 121 has a flat plate shape along the front portion 10D of the housing 10. The main body 121 is attached to the front portion 10D of the housing 10 so as to cover the opening 10a with the entire panel member 12. As a result, the opening 10a is closed by the panel member 12. In 1st Embodiment, the main-body part 121 is being fixed to the front part 10D with the volt | bolt so that the opening 10a can be opened. For this reason, in the air compressor X1, the opening 10a can be opened by removing the bolt that fixes the main body 121 of the panel member 12 and the front portion 10D of the housing 10 and removing the panel unit 11 from the housing 10. Is possible.

In addition, in 1st Embodiment, although the main-body part 121 of the panel member 12 is being fixed to front part 10D with the volt | bolt, it is not restricted to this. The main body 121 of the panel member 12 may be fixed to the front portion 10D of the housing 10 by a hinge portion and a lever lock, for example, similarly to the filter panel 16. In this case, the panel member 12 can open and close the opening 10a by opening or closing the lever lock.

The main body 121 is formed with a compression air inlet 121 a that penetrates the main body 121. The compression air inlet 121 a is for allowing air outside the housing 10 to flow into the guide path 20 inside the housing 10. The compression air inlet 121 a is formed at a position facing the inflow opening 20 a of the guide path 20. In the first embodiment, the compression air inlet 121a is arranged so as to be aligned with the inflow opening 20a of the guide path 20 in the first direction A1. The filter member 25 is detachably attached to the main body 121 so as to be fitted into the compression air inlet 121a. In this state, one end of the filter member 25 is fitted into the inflow opening 20 a of the guide path 20.

The bulging portion 122 is formed by a part of the back surface of the panel member 12 being recessed on the surface side of the panel member 12. That is, the bulging part 122 is configured integrally with the main body part 121 in the panel member 12. In the first embodiment, the bulging portion 122 is recessed toward the outside of the housing 10 in the first direction A1. As shown in FIG. 3, the bulging portion 122 includes a facing portion 122b and a side portion 122a.

The facing portion 122b is a portion facing the fan device unit 14 described later in a direction (orthogonal direction) orthogonal to the front portion 10D. The facing part 122b is located in front of the main body part 121. Specifically, the facing portion 122b is located on the opposite side of the compressor unit 19 with the main body 121 interposed therebetween in the orthogonal direction.

The side part 122a is a part extending in the orthogonal direction so as to connect the facing part 122b and the main body part 121. The side portion 122a faces the side surface 14c of the fan device unit 14. The side portion 122a includes a first portion 122c extending in the horizontal direction above the fan device unit 14, second and

third portions

122d and 122e extending in the vertical direction on both sides of the fan device unit 14, and the fan device unit 14. And a fourth portion 122f extending in the horizontal direction below. The side portion 122a has a closed loop shape that surrounds the fan device unit 14 in the circumferential direction by connecting the portions 122c to 122f together. In the first embodiment, an intermediate portion of the fourth portion 122f is recessed toward the first portion 122c so as to avoid the compression air inlet 121a formed in the main body 121.

The bulging portion 122 has a first bulging portion 122A and a second bulging portion 122B. The first bulging portion 122A overlaps the first compressor 19A in the orthogonal direction orthogonal to the front portion 10D. The second bulging portion 122B overlaps the second compressor 19B in the orthogonal direction orthogonal to the front portion 10D. The first bulging portion 122A and the second bulging portion 122B are positioned side by side with the compression air inlet 121a interposed therebetween. In the first embodiment, the space surrounded by the facing portion 122b and the side portion 122a in the first bulging portion 122A is referred to as a first concave space S3, and the facing portion 122b and the side portion 122a in the second bulging portion 122B. The space surrounded by is referred to as a second concave space S4. In the first embodiment, the first bulging portion 122A and the second bulging portion 122B are connected to each other above the compression air inlet 121a in the vertical direction C1. That is, the first concave space S3 and the second concave space S4 are connected to each other.

In the first embodiment, the first bulging portion 122A and the second bulging portion 122B are connected to each other. However, the first bulging portion 122A and the second bulging portion 122B are not limited to this. May be independent of each other. In this case, the first concave space S3 and the second concave space S4 are mutually independent spaces.

The fan device unit 14 sends the air inside the housing 10 toward the compressor unit 19. The fan device unit 14 is positioned so as to be shifted from the cooling air inlet 10b in the vertical direction C1. Specifically, the fan device unit 14 is located above the cooling air inlet 10b. The fan device unit 14 includes a first fan device 14A partially disposed in the first recessed space S3 and a second fan device 14B partially disposed in the second recessed space S4. In the first embodiment, the first fan device 14A and the second fan device 14B are configured by two axial fans arranged so as to overlap in the orthogonal direction orthogonal to the front portion 10D. In addition, the number of the axial fans constituting each of the first fan device 14A and the second fan device 14B may be one, or may be three or more.

The first fan device 14A and the second fan device 14B have the same structure. Hereinafter, the first fan device 14A will be described.

The first fan device 14A includes a suction port 14a that sucks in air that flows into the inside of the housing 10 from the cooling air inlet 10b, and a delivery port 14b that is located on the opposite side of the suction port 14a and that sends out air. And an attachment portion 14d for attaching the first fan device 14A to the panel member 12. 14 A of 1st fan apparatuses are the structures by which the impeller was arrange | positioned inside the cylindrical side surface 14c. The suction port 14a is formed by an opening on one end side of the cylindrical side surface 14c, and the delivery port 14b is formed by an opening on the other end side of the side surface 14c. In the first embodiment, the inlet 14a and the outlet 14b are substantially circular.

As shown in FIG. 5, in the first fan device 14A, the suction port 14a faces the facing portion 122b of the first bulging portion 122A with a space therebetween, and the delivery port 14b faces the first compressor 19A side. Arranged in posture. Specifically, the first fan device 14A is disposed from the first concave space S3 to the first accommodating space S1 so that the suction port 14a is positioned in the first concave space S3. More specifically, the end portion of the side surface 14c on the side where the suction port 14a is provided in the first fan device 14A is closer to the facing portion 122b than the end portion on the first compressor 19A side in the side portion 122a. Arranged on the side. The first fan device 14A is arranged such that the axial center of the axial fan constituting the first fan device 14A is displaced from the outlet 10c formed in the rear portion 10E of the housing 10.

The mounting portion 14d of the first fan device 14A extends from the side surface 14c of the first fan device 14A in the radial direction of the first fan device 14A. And the attaching part 14d of 14 A of 1st fan apparatuses is attached to the panel member 12 via the volt | bolt. As a result, the first fan device 14A faces the panel member 12 such that a part of the side surface 14c of the first fan device 14A faces the side portion 122a of the first bulging portion 122A with a gap. It is attached. The first fan device 14A may be fixed to the panel member 12 so that the entirety of the first fan device 14A is located in the first concave space S3.

Although a detailed description of the second fan device 14B is omitted, as in the first fan device 14A, a part of the side surface 14c of the second fan device 14B is a side portion 122a of the second bulging portion 122B. It is being fixed to the panel member 12 so that it may oppose with a space | interval.

The adapter unit 15 guides the air sent from the outlet 14 b in the fan device unit 14 to the compressor unit 19. The adapter unit 15 includes a first adapter 15A fixed to the delivery port 14b side of the first fan device 14A, and a second adapter 15B fixed to the delivery port 14b of the second fan device 14B. The first adapter 15A is arranged between the outlet 14b of the first fan device 14A and the first compressor 19A. The second adapter 15B is disposed between the outlet of the second fan device 14B and the second compressor 19B. The first adapter 15A and the second adapter 15B have the same structure. Hereinafter, the first adapter 15A will be described.

The first adapter 15A is a rectangular plate-shaped member as shown in FIG. The first adapter 15A includes one main surface (first main surface) 15a facing the delivery port 14b of the first fan device 14A and the other main surface (second main surface) 15b facing the first compressor 19A. Have. On the other hand, a circular one opening (first opening) 15c corresponding to the shape of the delivery port 14b is formed in the main surface 15a. The other main surface 15b is formed with a rectangular other opening (second opening) 15d corresponding to the rectangular outer shape of the first compressor 19A in the first direction A1. The one opening 15c and the other opening 15d communicate with each other, thereby forming a through hole 15e penetrating the first adapter 15A. That is, the through hole 15e of the first adapter 15A has a shape corresponding to the shape of the outlet 14b on the first fan device 14A side, and corresponds to the outer shape of the first compressor 19A on the first compressor 19A side. It has a shape.

The adapter unit 15 may not be provided, and air may be sent directly from the outlet 14b of the fan device unit 14 to the compressor body 19a of the compressor unit 19.

The sound absorbing member 13 is disposed in the first and second concave spaces S3 and S4, and reduces the noise of the air compressor X1 due to the air passing through the first and second concave spaces S3 and S4. As shown in FIGS. 8 and 10, the sound absorbing member 13 is attached to the bulging portion 122. Specifically, the sound absorbing member 13 includes a peripheral edge portion 13a provided along the inner surface of the side portion 122a of the bulging portion 122 and the inner surface of the facing portion 122b, the first concave space S3, and the second concave space S4. A partition portion 13b disposed in a space above the compression air inlet 121a. The peripheral edge part 13a and the partition part 13b are arranged with a space from the fan device unit 14.

In 1st Embodiment, the peripheral part 13a is provided over the 1st site | part 122c, the 2nd site | part 122d, the 3rd site | part 122e, the 4th site | part 122f, and the opposing part 122b of the side part 122a. . In addition, the peripheral part 13a may be provided only in a part of the side part 122a and the opposing part 122b. For example, the peripheral part 13a may be provided only in the opposing part 122b. Moreover, the peripheral part 13a may be provided only in the 1st site | part 122c of the side part 122a.

As shown in FIG. 5, the air compressor X1 bends the air sent from the outlet 14b of the fan unit 14 to the compressor unit 19 toward the outlet 10c formed in the rear portion 10E of the housing 10. Further, an outflow guide portion 23 for guiding is further provided.

The outflow guide portion 23 is disposed behind the compressor unit 19 in the first housing space S1 inside the housing 10. Specifically, the outflow guide portion 23 is located on the opposite side of the fan device unit 14 with the compressor unit 19 interposed therebetween. In the first embodiment, the outflow guide portion 23 is attached to the rear portion 10E in the first accommodation space S1. The outflow guide portion 23 includes a facing portion 23b facing the compressor unit 19 in the axial direction of the axial flow fan constituting the fan device unit 14, and a side portion 23a extending from the edge of the facing portion 23b toward the compressor unit 19. ,have.

In the facing portion 23b, a communication hole 23c communicating with the outflow port 10c formed on the outer surface of the housing 10 is formed. The communication hole 23 c is located at a position away from the axial center of the axial flow fan constituting the fan device unit 14. The joining pipe 21d of the outflow pipe section 21 extends into the outflow guide section 23 along the upper portion 10A, and further extends to the external duct section 40 outside the housing 10 through the communication hole 23c and the outflow outlet 10c.

A sound absorbing member 24 is provided on the inner surface of the outflow guide portion 23. In the present embodiment, the sound absorbing member 24 is provided over the entire side part 23a and the entire facing part 23b excluding the communication hole 23c.

In the air compressor X1 according to the first embodiment described above, the compressor unit 19 is cooled by the air flowing inside the housing 10 as shown in FIG. Hereinafter, the flow of air for cooling the first compressor 19A in the compressor unit 19 will be described with reference to FIG. The second compressor 19B is also cooled in the same manner as the first compressor 19A.

In the air compressor X1, air flows in the horizontal direction from the outside of the housing 10 to the second housing space S2 inside the housing 10 through the cooling air inlet 10b. Part of the air that has flowed into the second storage space S2 reaches the first storage space S1 through the through hole 10e of the intermediate portion 10C according to the suction of the suction port 14a of the first fan device 14A before reaching the motor unit 17. Rise to. Then, the air that has risen into the first accommodation space S1 flows into a passage F1 formed between the side surface 14c of the first fan device 14A and the sound absorbing member 13 provided in the fourth portion 122f of the side portion 122a. . The air that has flowed into the passage F1 flows toward the facing portion 122b, wraps around the suction port 14a while being bent at the sound absorbing member 13 provided in the facing portion 122b, and is sucked into the suction port 14a.

Thus, in the air compressor X1, the suction port 14a in the fan device unit 14 is arranged so that the air inside the housing 10 is drawn around the suction port 14a. Specifically, the facing portion 122b of the bulging portion 122 is disposed so as to face the side surface 14c so that the air inside the housing 10 flows around from the side surface 14c of the fan device unit 14 toward the suction port 14a. Has been. That is, the bulging portion 122 according to the first embodiment corresponds to an inflow guide portion that causes the air inside the housing 10 to circulate toward the suction port 14a. The inner surface of the bulging portion 122 becomes an inflow guide surface that actually guides the air flow.

The air sent from the outlet 14b of the first fan device 14A to the first compressor 19A through the through hole 15e of the first adapter 15A flows along the axial direction of the axial fan constituting the first fan device 14A. Then, the first compressor 19A is cooled. Then, the air after cooling the first compressor 19A flows to the rear of the first compressor 19A along the axial direction of the axial fan constituting the first fan device 14A, and faces the opposite portion 23b of the outflow guide portion 23. It is bent by the sound absorbing member 24 provided in the. The bent air is guided to the communication hole 23c formed at the peripheral edge of the facing portion 23b while the movement in the vertical direction C1 is restricted by the side portion 23a of the outflow guide portion 23. The air flowing through the communication hole 23c and the outlet 10c cools the compressed air that is discharged from the compressor and flows through the joining pipe 21d.

The air guided to the communication hole 23c flows into the external duct portion 40 attached to the rear portion 10E of the housing 10 through the communication hole 23c and the outlet 10c. This air flows into the protective cover 22b of the aftercooler 22 disposed behind the external duct portion 40. Thereby, the air which flowed out from the inside of the housing 10 blows against the meandering pipe 22a in the protective cover 22b, and the compressed air flowing through the meandering pipe 22a is cooled. The meandering pipe 22a is also cooled by a cooler fan 22c located below the external duct portion 40.

As described above, in the air compression device X1 according to the first embodiment, the air that has flowed into the housing 10 through the cooling air inlet 10b is circulated toward the suction port 14a of the fan device unit 14. It is sucked into the suction port 14 a and then sent out to the compressor unit 19. That is, in the air compressor X1 according to the first embodiment, the flow direction of the air flowing into the housing 10 from the cooling air inlet 10b by bending the air through the suction port 14a of the fan device unit 14 is bent. Can do. That is, in the air compression device X1 according to the first embodiment, the air flow distance from the cooling air inlet 10b to the suction port 14a can be increased, and the air flows when the air flow direction is bent. Many collisions will occur with each member in the housing 10. Thereby, the noise which generate | occur | produces in the housing | casing 10 of the said air compressor X1 can be reduced.

Furthermore, in the air compression device X1 according to the first embodiment, the bulging portion 122 as an inflow guide portion is disposed so as to face the side surface 14c of the fan device unit 14. For this reason, the air inside the housing | casing 10 can be guide | induced to the suction inlet 14a via the channel | path F1 between the side surface 14c of the fan apparatus unit 14, and the bulging part 122. FIG. Thereby, the air inside the housing | casing 10 can be reliably circulated into the suction inlet 14a.

Further, in the air compression device X1 according to the first embodiment, the air flowing between the side surface 14c of the fan device unit 14 and the side portion 122a of the bulging portion 122 is bent by the facing portion 23b of the bulging portion 122. However, it will be guide | induced to the suction inlet 14a. Thereby, the flow direction of the air sucked into the suction port 14a of the fan device unit 14 can be reliably bent.

Further, in the air compression device X1 according to the first embodiment, the bulging portion 122 as an inflow guide portion is formed on the panel member 12 that closes the opening 10a formed to perform maintenance inside the housing 10. ing. For this reason, it is not necessary to provide an inflow guide part inside the housing 10.

Furthermore, in the air compression device X1 according to the first embodiment, when the panel member 12 is moved so as to open the opening 10a formed in the housing 10, the bulging portion 122 formed in the panel member 12 and The fan device unit 14 attached to the panel member 12 also moves simultaneously. In particular, in the air compressor X1 according to the first embodiment, since the adapter unit 15 is attached to the fan device unit 14, the adapter unit 15 also moves simultaneously when the panel member 12 is moved. For this reason, by moving the panel member 12 so as to open the opening 10a of the housing 10, the compressor unit 19 inside the housing 10 is exposed through the opening 10a. Therefore, the compressor unit 19 can be easily maintained.

Furthermore, in the air compressor X1 according to the first embodiment, the noise due to the air flowing along the bulging portion 122 can be further reduced by the sound absorbing member 13 attached to the bulging portion 122.

Furthermore, in the air compressor X1 according to the first embodiment, the sound absorbing member 13 is provided between the upper part 10A of the housing 10 and the fan device unit 14. For this reason, in the state attached to the floor part 100a of the rail vehicle 100, the noise which generate | occur | produces from the floor part 100a with respect to the person who gets into the inside of a rail vehicle can be reduced efficiently.

Further, in the air compression device X1 according to the first embodiment, the sound absorbing member 13 attached to the facing portion 122b is connected to the platform and the fan device unit 14 when the railway vehicle 100 arrives at the platform on the side wall portion 100c side. Will be located between. For this reason, the noise with respect to the person located in a platform can be reduced efficiently.

Further, in the air compressor X1 according to the first embodiment, the one opening 15c in the through hole 15e of the adapter unit 15 has a shape corresponding to the shape of the delivery port 14b, and the other opening 15d in the through hole 15e. Has a shape corresponding to the shape of the compressor body 19a. For this reason, even if a loss occurs in the air introduced into the fan device unit 14 by sucking the air inside the housing 10 so that the air inside the housing 10 wraps around the air inlet 14a, the air outlet 14b The delivered air can be supplied to the compressor unit 19 with high efficiency. Thereby, the compressor unit 19 can be sufficiently cooled while reducing noise.

Furthermore, in the air compressor X1 according to the first embodiment, the cooling air inlet 10b and the fan device unit 14 are arranged so as to be shifted in the vertical direction C1. For this reason, the flow direction of the air flowing into the inside of the housing 10 from the cooling air inlet 10b is bent at least once in the vertical direction C1. Specifically, the air that has flowed from the cooling air inlet 10b into the second housing space S2 inside the housing 10 enters the first housing space S1 according to the suction of the suction port 14a of the fan device unit 14. Bend in the direction of rising. For this reason, in the air compressor X1 according to the first embodiment, the area of the housing 10 in the horizontal direction is reduced as compared with the case where noise is reduced by repeatedly bending the air flow direction only in the horizontal direction. It can be kept small. That is, in the air compressor X1 according to the first embodiment, the installation area of the air compressor X1 mounted on the railway vehicle 100 can be reduced, and noise can be sufficiently reduced.

Further, in the air compressor X1, since the motor unit 17 includes the motor fan 173 attached coaxially with the motor main body 172, it is not necessary to separately provide a ventilation fan inside the casing 10, and the casing 10 is large. Can be suppressed.

Furthermore, in the air compressor X1 according to the first embodiment, the airflow generated by the motor fan 173 flows in the horizontal direction by passing between the cooling fins 172a. That is, in the air compressor X1 according to the first embodiment, an airflow in the vertical direction C1 is generated by suction of the suction port 14a of the fan device unit 14, and a horizontal direction orthogonal to the vertical direction C1 is driven by the motor fan 173. The air current is generated. For this reason, it is possible to prevent air from being trapped inside the housing 10.

Furthermore, in the air compressor X1 according to the first embodiment, after the air sucked from the suction port 14a of the fan device unit 14 is sent from the outlet 14b of the fan device unit 14 and cools the compressor unit 19 Then, it is bent by the outflow guide portion 23 and flows out from the outflow port 10 c to the outside of the housing 10. That is, in the air compressor X1 according to the first embodiment, not only the air flow direction before being sucked into the fan device unit 14, but also the air flow direction after cooling the compressor unit 19 can be bent. As a result, noise can be further reduced.

Furthermore, in the air compressor X1 according to the first embodiment, the joining pipe 21d of the outflow pipe portion 21 passes through the outflow guide portion 23 and extends to the outside of the housing 10 through the communication hole 23c and the outflow port 10c. ing. For this reason, the compressed air flowing through the junction pipe 21 d is cooled by the air discharged from the outlet 10 c to the outside of the housing 10 through the outflow guide portion 23 before being guided to the aftercooler 22.

In the first embodiment, the panel member 12 includes the main body 121 and the bulging portion 122 that bulges from the main body 121, but is not limited thereto. For example, the panel member 12 is formed in a flat plate shape as a whole, and the outer surface of the panel member 12 is flat, while a part of the back surface is recessed to the front surface side, whereby the first and second concave spaces S3, S3 are formed. S4 may be formed. In this case, the back surface of the panel member 12 forming the first and second concave spaces S3 and S4 serves as an inflow guide surface for guiding the flow of air guided to the suction port 14a, and the entire panel member 12 is connected to the inflow guide portion. Become.

Further, in the first embodiment, the bulging portion 122 as the inflow guide portion that guides the flow of air guided to the suction port 14a is formed in the panel member 12, but is not limited thereto. For example, when a portion that functions as an inflow guide portion is not formed in the panel member 12, an inflow guide portion independent from the panel member 12 may be disposed inside the housing 10.

In the first embodiment, the fan device unit 14 is attached to the panel member 12, and the panel unit 11 is configured to be able to open and close the opening 10a as a whole, but is not limited thereto. The fan device unit 14 may not be attached to the panel member 12, and may be provided inside the housing 10, for example. The same applies to the adapter unit 15.

Further, in the first embodiment, the compressor unit 19 has two compressors, the first compressor 19A and the second compressor 19B, but is not limited thereto. The number of compressors included in the compressor unit 19 may be one, or may be three or more. In this case, the number of motors included in the motor unit 17 and the number of fan devices included in the fan device unit 14 are appropriately changed according to the number of compressors included in the compressor unit 19.

In the first embodiment, the housing 10 has an intermediate portion 10C, and the motor unit is formed by forming the first storage space S1 and the second storage space S2 with the intermediate portion 10C interposed therebetween. 17 and the compressor unit 19 are arranged so as to be shifted in the vertical direction C1, but the present invention is not limited to this. For example, the motor unit 17 and the compressor unit 19 may be arranged side by side in a plane direction orthogonal to the vertical direction C1.

(Second Embodiment)
In the second embodiment described below, an air compressor X2 in which the motor unit 17 and the compressor unit 19 are arranged so as to be aligned with each other in the planar direction will be described.

11 to 13 show an air compressor X2 according to the second embodiment. FIG. 11 is a perspective view of the air compression device X2 as viewed from the front portion 10D side of the housing 10. FIG. 12 is a perspective view of the air compression device X 2 as viewed from the side of the housing 10, and is a view seen through the side and the upper portion 10 A of the housing 10. FIG. 13 is a view of the inside of the air compression device X2 as viewed from the upper part 10A side of the housing 10, and only the fan device unit 14 and an inflow guide portion 26 described later show a predetermined cross section. In FIG. 11 to FIG. 13, constituent members of the air compressor X2 that are the same as those of the air compressor X1 are given the same reference numerals as in the first embodiment.

As shown in FIGS. 11 and 12, a cooling air inlet 10b for allowing air to flow into the housing 10 is formed in the front portion 10D of the housing 10. The cooling air inlet 10b has a rectangular shape, and communicates the outside of the housing 10 and the first housing space S1 that is the space above the intermediate portion 10C inside the housing 10. And the filter panel 16 is attached to front part 10D of the housing | casing 10 so that the cooling air inflow port 10b can be opened and closed.

In the air compressor X2, as shown in FIG. 12, the controller unit 18 and the aftercooler 22 are accommodated in the second accommodating space S2. Further, the motor unit 17 and the compressor unit 19 are accommodated in the first accommodation space S1.

The motor unit 17 has a first motor 17A and a second motor 17A arranged in the first accommodation space S1. The output shafts of the first and

second motors

17A and 17B extend in the direction in which the front part 10D and the rear part 10E are arranged, and are arranged closer to the rear part 10E than the front part 10D.

The compressor unit 19 includes a first compressor 19A and a second compressor 19B arranged in the second accommodation space S2. The first and

second compressors

19A and 19B are arranged closer to the front part 10D than the rear part 10E so that the front part 10D and the rear part 10E are aligned in the first and

second motors

17A and 17B, respectively. Has been. Specifically, the first and

second compressors

19A and 19B are arranged such that their output shafts overlap with the output shafts of the first and

second motors

17A and 17B. It is connected to each. The first and

second compressors

19A and 19B are opposed to the filter panel 16 in the direction in which the front portion 10D and the rear portion 10E are arranged.

The fan device unit 14 includes a first fan device 14A facing the first compressor 19A and a second fan device 14B facing the second compressor 19B. The first fan device 14A and the second fan device 14B are arranged in the direction in which the first compressor 19A and the second compressor 19B are arranged. The first fan device 14A and the second fan device 14B have the same configuration, and are arranged symmetrically in the direction in which the first compressor 19A and the second compressor 19B are arranged. Hereinafter, the first fan device 14A will be described.

The first fan device 14A is disposed between the first compressor 19A and one side of the housing 10 as shown in FIG. Specifically, the first fan device 14A is disposed in a posture in which the suction port 14a is opposed to the one side surface of the housing 10 at an interval and the delivery port 14b is opposed to the first compressor 19A. Has been. That is, in the air compressor X2, the air flow direction in the first fan device 14A is orthogonal to the inflow direction of the air flowing into the housing 10 from the cooling air inlet 10b. In the first embodiment, the first fan device 14A is arranged alongside a part of the cooling air inlet 10b in the direction in which the first motor 17A and the first compressor 19A are arranged.

As shown in FIG. 13, the air compression device X2 includes a space 27 into which air flows after being sent from the first and

second fan devices

14A and 14B to the first and

second compressors

19A and 19B. It further includes a discharge portion 29 through which the air in the portion 27 is discharged and a discharge fan 28 that sends the air in the space portion 27 to the discharge portion 29.

The space 27 is located between the first compressor 19A and the second compressor 19B in the second direction B1. Specifically, the space portion 27 is provided between the first compressor 19A and the second compressor 19B, one side wall disposed along the first compressor 19A and the other wall disposed along the second compressor 19B. It is formed between the side walls. The air flowing from the fan unit 14 to the compressor unit 19 flows into the space portion 27 through, for example, openings formed in the one side wall and the other side wall.

The discharge part 29 is arranged on the rear part 10E side with respect to the space part 27 so as to be aligned with the space part 27. The discharge fan 28 is disposed between the space portion 27 and the discharge portion 29. The air flowing into the space 27 flows through the space 27 from the front portion 10D side to the rear portion 10E side by the suction of the discharge fan 28, and is guided to the discharge portion 29. For example, the discharge unit 29 discharges air toward the aftercooler 22 disposed below the discharge unit 29.

Here, the air compression device X2 further includes an inflow guide portion 26 provided inside the housing 10 in place of the bulging portion 122 in the air compression device X1.

The inflow guide portion 26 is housed in the first housing space S1 inside the housing 10. The inflow guide portion 26 includes a first inflow guide portion 26A and a second inflow guide portion 26B. The first inflow guide portion 26A causes the air that has flowed into the housing 10 from the cooling air inlet 10b to circulate from the side surface 14c of the first fan device 14A toward the suction port 14a. The second inflow guide portion 26B causes the air that has flowed into the inside of the housing 10 from the cooling air inlet 10b to circulate from the side surface 14c of the second fan device 14B toward the suction port 14a. The first inflow guide portion 26A is disposed between the first compressor 19A and one side surface of the housing 10, and the second inflow guide portion 26B is disposed between the second compressor 19B and the other side surface of the housing 10. It is arranged between.

The first inflow guide portion 26A and the second inflow guide portion 26B have the same structure, and are arranged in a symmetric posture in the direction in which the first compressor 19A and the second compressor 19B are arranged. Hereinafter, the first inflow guide portion 26A will be described in detail.

The first inflow guide portion 26A has a compressor holding portion 261, an upper guide portion 262, and a side guide portion 263.

The compressor holding portion 261 of the first inflow guide portion 26A has a flat plate shape, and a fan opening 261a is formed at the center portion thereof. The compressor holding portion 261 of the first inflow guide portion 26A is disposed so as to face the first compressor 19A in the direction in which the first compressor 19A and the second compressor 19B are arranged. And the fan opening 261a formed in the compressor holding | maintenance part 261 of 26 A of 1st inflow guides is connected to the delivery port 14b of 14 A of 1st fan apparatuses. Thereby, the air sent from the outlet 14b of the first fan device 14A is guided to the first compressor 19A through the fan opening 261a.

The upper guide portion 262 of the first inflow guide portion 26A extends from the upper end of the compressor holding portion 261 toward one side portion of the housing 10. The upper guide portion 262 of the first inflow guide portion 26A is opposed to the side surface 14c of the first fan device 14A above the first fan device 14A. The upper guide portion 262 is disposed with a space from the upper portion 10 A of the housing 10, and is disposed with a space from one side portion of the housing 10. A sound absorbing member 30 is attached to the inner surface of the upper guide portion 262 (the surface on the first fan device 14A side).

The side guide portion 263 of the first inflow guide portion 26A extends from the front end of the compressor holding portion 261 (the end portion on the front portion 10D side of the housing 10) toward one side portion of the housing 10. The side guide portion 263 of the first inflow guide portion 26A faces the side surface 14c of the first fan device 14A on the side of the first fan device 14A. The side guide part 263 is connected to the upper guide part 262. The side guide portion 263 is disposed with a space from the front portion 10D of the housing 10 and is disposed with a space from one side portion of the housing 10. The sound absorbing member 30 is attached to the inner surface of the side guide portion 263 (the surface on the first fan device 14A side).

As shown in FIG. 13, the side guide portion 263 of the first inflow guide portion 26A is located between the cooling air inlet 10b and the first fan device 14A. The suction port 14a of the first fan device 14A is within the width of the side guide portion 263 of the first inflow guide portion 26A in the direction in which the first fan device 14A and the cooling air inlet port 10b are arranged. It is settled. In the second embodiment, in the direction in which the first compressor 19A and the second compressor 19B are arranged, one end of one side portion of the housing 10 in the side guide portion 263 of the first inflow guide portion 26A is for cooling. It is located closer to the side than the outer edge of the air inlet 10b. The suction port 14 a of the first fan device 14 A is located closer to the first compressor 19 A than the one end of the side guide portion 263.

In the air compressor X2, air flows from the outside of the housing 10 into the first housing space S1 inside the housing 10 through the cooling air inlet 10b. The air flowing into the first housing space S1 is bent at the side guide portion 263 in accordance with the suction from the suction port 14a of the first and

second fan devices

14A and 14B. That is, the air that has flowed into the first housing space S1 flows toward one side and the other side of the housing 10 through the gap between the side guide portion 263 and the front portion 10D. The air reaching one side and the other side of the housing 10 is bent at the side and is sucked into the suction port 14a so as to go around the side guide 263. In the second embodiment, since a gap is also formed between the upper guide portion 262 and the upper portion 10A of the housing 10, air inside the housing 10 passes through the upper guide portion 262 through the gap. It is also possible for air to be sucked into the suction port 14a so as to go around.

As described above, in the air compression device X2 according to the second embodiment, the air inside the housing 10 can be made to flow toward the suction port 14a by the inflow guide portion 26. As a result, the distance that the air flows from the cooling air inlet 10b to the suction port 14a of the fan unit 14 can be increased, and noise can be reduced in the same manner as the air compressor X1 according to the first embodiment. Can be reduced.

Moreover, in the air compressor X2 according to the second embodiment, the flow direction of the air that has flowed into the space 27 after cooling the first and

second compressors

19A and 19B can be bent by the exhaust fan 28. For this reason, noise can be further reduced.

The first embodiment and the second embodiment described above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the first embodiment and the second embodiment but by the scope of claims, and further includes meanings equivalent to the scope of claims and all modifications within the scope. It is.

Here, the embodiment will be outlined.

(1) In the air compressor described above, the air that has flowed into the housing through the inlet is sucked into the inlet so as to circulate toward the inlet of the fan unit and is sent to the compressor unit. That is, in the above air compression device, the flow direction of the air introduced into the housing can be bent by suction of air through the suction port of the fan device unit. That is, in the above-described air compression device, the flow distance of air from the inlet to the suction port can be increased, and when the direction of air flow is bent, the air often collides with members in the housing. . For this reason, the noise which generate | occur | produces in the housing | casing of the said air compressor can be reduced.

(2) The air compressor described above includes an inflow guide portion disposed to face the side surface so that the air sucked into the suction port circulates from the side surface of the fan device unit toward the suction port. It is preferable to further provide.

In the above air compressor, since the inflow guide portion is disposed so as to face the side surface of the fan device unit, the air in the housing is sucked in through the space between the side surface of the fan device unit and the inflow guide portion. Can lead to. Thereby, the air in a housing | casing can be reliably circulated to the suction inlet.

(3) It is preferable that the said inflow guide part has a side part which opposes the said side surface of the said fan apparatus unit, and an opposing part which opposes the said suction inlet of the said fan apparatus unit.

In the above air compression device, the air flowing between the side surface and the side portion of the fan device unit is guided to the suction port while being bent by the facing portion. Thereby, the flow direction of the air sucked into the suction port of the fan device unit can be reliably bent.

(4) The air compression device may further include a panel member that is formed in the housing and is provided so that an opening for performing maintenance inside the housing can be opened and closed. In this case, it is preferable that the inflow guide portion is configured integrally with the panel member.

In the above air compression apparatus, since the inflow guide portion is formed integrally with the panel member, it is not necessary to provide the inflow guide portion individually inside the housing.

(5) It is preferable that the fan device unit is attached to the panel member.

In the above air compression device, when the panel member is moved so as to open the opening formed in the housing, the inflow guide portion configured integrally with the panel member and the fan device unit attached to the panel member are also included. Will move together. For this reason, by moving the panel member so as to open the opening of the housing, for example, the compressor unit inside the housing can be easily maintained through the opening.

(6) It is preferable that the inflow port and the fan device unit are arranged to be shifted in the vertical direction.

In the above air compression device, the inlet and the fan device unit are displaced in the vertical direction, so that the flow direction of the air flowing into the housing from the inlet is bent at least once in the vertical direction. . For this reason, in the above-described air compressor, the area of the housing in the horizontal direction can be reduced compared to the case where noise is reduced by repeatedly bending the air flow direction only in the horizontal direction. That is, in the above air compression device, for example, the installation area of the air compression device when mounted on a vehicle can be kept small, and noise can be sufficiently reduced.

(7) The above air compression device may further include an inflow guide portion that circulates air that has flowed into the housing from the inflow port toward the suction port. In this case, it is preferable that the said inflow guide part is arrange | positioned between the said inflow port and the said fan apparatus unit. Moreover, it is preferable that the said suction inlet of the said fan apparatus unit is settled in the range of the width | variety of the said inflow guide part in the direction where the said fan apparatus unit and the said inflow port are located in a line.

In the above air compressor, since the suction port is within the width of the inflow guide portion provided between the inlet and the fan device unit, the air flowing into the housing from the inlet is sucked in. It flows so as to go around the inflow guide portion according to the suction of the mouth. That is, in the above air compression device, the air that has flowed into the housing by the inflow guide portion can be directed toward the suction port, thereby reducing noise.

(8) It is preferable that the air compression device further includes a sound absorbing member attached to the inflow guide portion.

In the above air compressor, noise due to air flowing along the inflow guide portion can be further reduced by the sound absorbing member attached to the inflow guide portion.

(9) It is preferable that the sound absorbing member is provided at least between the upper part of the housing and the fan device unit.

In the above air compressor, the sound absorbing member is provided between the upper surface of the housing and the fan device unit. For this reason, for example, when the air compressor is mounted under the floor of the vehicle, it is possible to efficiently reduce the noise for a person who gets into the vehicle.

(10) The above air compressor may further include an adapter unit having a through hole that guides air sent from the outlet of the fan device unit to the compressor unit. In this case, the through hole of the adapter unit has a shape corresponding to the shape of the delivery port on the fan device unit side and a shape corresponding to the outer shape of the compressor unit on the compressor unit side. It is preferable.

In the above air compression device, even if a loss occurs in the air introduced into the fan device unit by sucking the air in the housing so that the air in the housing is directed toward the suction port, the air is sent out from the outlet. Air can be supplied to the compressor unit with high efficiency. Thereby, the compressor unit can be sufficiently cooled while reducing noise.

(11) The air compression device includes a motor main body for driving the compressor unit, and a motor fan that is attached coaxially to the motor main body and generates an airflow according to the driving of the motor main body. It is preferable to further include a motor unit.

In the above air compression apparatus, since the motor unit has a motor fan attached coaxially to the motor body, it is not necessary to provide a separate fan for ventilation in the housing, and the housing can be prevented from becoming large.

(12) The casing may have an outlet that allows the air in the casing to flow out. In this case, the air compressor further includes an outflow guide portion provided to bend the flow direction of the air flowing on the opposite side of the fan device unit with the compressor unit interposed therebetween toward the outlet. preferable.

In the above air compressor, the air sucked from the suction port of the fan device unit is sent out from the fan device unit to cool the compressor unit, and then the outflow guide portion on the opposite side of the fan device unit across the compressor unit. And then flows out from the outlet to the outside of the housing. That is, in the above air compressor, not only the air flow direction before being sucked from the suction port of the fan device unit but also the air flow direction after cooling the compressor unit is bent, so that noise is further reduced. be able to.

As described above, according to the embodiment, an air compression device capable of reducing noise is provided.

Claims

A housing having an inlet for allowing air to flow into the interior;
A fan unit that has a suction port for sucking air that has flowed into the housing through the inlet, and that sends out the air sucked from the suction port toward the compressor unit; and
The air compression device, wherein the suction port of the fan device unit is arranged so as to circulate air in the housing toward the suction port.
2. The air according to claim 1, further comprising an inflow guide portion disposed to face the side surface so that the air sucked into the suction port flows from the side surface of the fan device unit toward the suction port. Compression device.
The air compression device according to claim 2, wherein the inflow guide portion includes a side portion facing the side surface of the fan device unit and a facing portion facing the suction port of the fan device unit.
A panel member formed in the housing and provided to be able to open and close an opening for performing maintenance inside the housing;
The air compression device according to any one of claims 1 to 3, wherein the inflow guide portion is configured integrally with the panel member.
The air compression device according to claim 4, wherein the fan device unit is attached to the panel member.
The air compression device according to any one of claims 1 to 5, wherein the inlet and the fan device unit are arranged so as to be shifted in a vertical direction.
Further comprising an inflow guide part for turning air that has flowed into the housing from the inflow port toward the suction port,
The inflow guide portion is disposed between the inflow port and the fan device unit,
2. The air compression device according to claim 1, wherein the suction port of the fan device unit is within a width range of the inflow guide portion in a direction in which the fan device unit and the inflow port are aligned.
The air compression device according to any one of claims 2 to 7, further comprising a sound absorbing member attached to the inflow guide portion.
The air compression device according to claim 8, wherein the sound absorbing member is provided at least between an upper portion of the housing and the fan device unit.
An adapter unit having a through hole that guides air sent from the outlet of the fan unit to the compressor unit;
The through hole of the adapter unit has a shape corresponding to the shape of the delivery port on the fan device unit side and a shape corresponding to the outer shape of the compressor unit on the compressor unit side. The air compression device according to any one of 1 to 9.
The motor unit further comprises: a motor main body for driving the compressor unit; and a motor fan attached coaxially to the motor main body and generating an airflow in response to the driving of the motor main body. The air compression device according to any one of 10.
The housing has an outlet that allows the air in the housing to flow out;
The air compression device further includes an outflow guide portion provided so as to bend a flow direction of air flowing on the opposite side of the fan device unit across the compressor unit toward the outflow port. The air compressor according to any one of 11.