JP6812344B2 - Air compressor - Google Patents

Description

The present invention relates to an air compressor.

Conventionally, an air compression device 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 Document 1 describes an air compressor including a storage case, a compressor housed in the storage case, and a compression drive unit. 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 creates an air flow in the direction in which the compression drive unit and the compressor are aligned. Here, the accommodating case is provided with a filter portion facing the cooling fan in the direction of the air flow 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 air flow generated by the cooling fan. Then, the air flowing into the accommodating case through the filter unit is guided to the compression drive unit and the compressor so as to travel straight by the cooling fan. As a result, the compression drive unit and the compressor are cooled.

In the air compressor of Patent Document 1, the air that has flowed into the storage case through the filter unit goes straight toward the cooling fan and is guided to the compressor. Therefore, the cooling fan sucks in the air traveling straight through the storage case. Therefore, in the air compressor of Patent Document 1, it is not possible to sufficiently obtain the attenuation of the sound accompanying the air flow in the accommodation case, and there is a possibility that a large noise is generated in the cooling fan.

Japanese Unexamined Patent Publication No. 2011-226285

An object of the present invention is to provide an air compressor capable of reducing noise.

The air compressor according to one aspect of the present invention is arranged in a compressor unit , a housing having an inflow port for accommodating the compressor unit and allowing air to flow into the inside, a tubular side surface, and the inside of the side surface. It has an impeller, a suction port having an opening formed at one end of the side surface, and an air outlet having an opening formed at the other end of the side surface, and the suction port flows into the housing through the inflow port. and saw pulls in fresh air, disposed between the fan device unit for sending toward the compressor unit through the delivery port facing the air sucked from the suction port to the compressor unit, and the inlet and the suction port It is provided with an inflow guide portion that forms a passage between the fan device unit and the side surface . In the passage, air flows in the direction opposite to the flow direction of the air flowing from the suction port of the fan device unit to the outlet.

It is a schematic diagram which looked at the railroad vehicle which mounted the air compression device which concerns on 1st Embodiment from the side. It is a schematic view of the railroad vehicle shown in FIG. 1 as viewed from above, and the rail, sleepers, and air compressor are each shown by a two-dot chain line. It is a perspective view which shows the schematic structure of the air compression apparatus which concerns on 1st Embodiment. It is a perspective view which shows the schematic structure of the air compression apparatus which concerns on 1st Embodiment, and is the figure of the state which seen through the side part of the said housing with the panel unit and the filter panel removed from the housing. It is the figure which looked at the inside of the housing of the air compression device which concerns on 1st Embodiment from the side. It is a perspective view which shows the schematic structure of the motor accommodated in the 2nd accommodation space S2 of the housing among the air compression apparatus which concerns on 1st Embodiment. It is the figure which looked at the inside of the housing of the air compression device which concerns on 1st Embodiment from above, and is the figure which see through the inside of the air filter for compression and the guide path. It is a perspective view which looked at the panel unit of the air compression apparatus which concerns on 1st Embodiment from the rear. It is a perspective view which shows the schematic structure of the adapter of the panel unit which concerns on 1st Embodiment. It is sectional drawing which shows the schematic structure of the air compression apparatus which concerns on 1st Embodiment, and is the figure which showed the flow of the air which cools a compressor unit. It is a front perspective view which shows the schematic structure of the air compression apparatus which concerns on 2nd Embodiment. It is a side perspective view which shows the schematic structure of the air compression apparatus which concerns on 2nd Embodiment, and is the figure which see through the side part and the upper part of the housing. It is a figure which looked at the inside of the housing of the air compression device which concerns on 2nd Embodiment from above.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, in each figure referred to below, for convenience of explanation, only the main members among the constituent members of the air compression devices X1 and X2 according to the present embodiment are shown in a simplified manner. Therefore, the air compression devices X1 and X2 according to the present embodiment may include any constituent members not shown in the respective drawings referred to in the present specification.

(First Embodiment)
1 and 2 show a railroad vehicle 100 equipped with the 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 railroad vehicle 100. The air compression device X1 does not have to be mounted on the railway vehicle 100, and may be mounted on equipment such as other vehicles equipped with pneumatic equipment.

Railway vehicle 100, floor 100a and, the floor 100 a of the upper wall portion 100b positioned above, a pair of vertically extending so as to connect the floor portion 100a and the upper wall portion 100b side wall portion 100c, 100d And have. Further, the railroad vehicle 100 has wheels attached to the floor portion 100a and door portions attached to the side wall portions 100c and 100d. The user of the railroad vehicle 100 gets into the inside of the railroad vehicle 100 from the platform of the station through the door portion attached to the side wall portion 100c or the side wall portion 100d. Then, as shown in FIG. 2, the railway vehicle 100 travels along the rail 101 on a track composed of the sleepers 102 and the rails 101 extending in the direction orthogonal to the sleepers 102. The extending direction of the sleepers 102 is referred to as the first direction A1, the direction orthogonal to the first direction A1 and the extending direction of the rail 101 is referred to as the second direction B1.

As shown in FIG. 1, the air compressor X1 is attached to the floor portion 100a of the railway vehicle 100 from below. Further, as shown in FIG. 2, the air compressor X1 is arranged on the side closer to the side wall portion 100c than the side wall portion 100d in the first direction A1.

Next, in addition to FIGS. 1 and 2, the air compressor X1 will be specifically described with reference to FIGS. 3 and 4. FIG. 3 is a perspective view showing a schematic configuration of the air compressor X1. FIG. 4 is a view showing a state in which the panel unit 11 and the filter panel 16 described later are removed from the air compressor X1 shown in FIG. FIG. 5 is a view of the air compressor X1 viewed from the second direction B1 and is a perspective view of the side surface of the housing 10 described later.

As shown in FIGS. 3 to 5, the air compressor X1 is mainly arranged outside the housing 10, the motor unit 17 and the compressor unit 19 housed inside the housing 10, and the housing 10. The controller unit 18 is provided. In the air compressor X1, the compressor unit 19 is driven in conjunction with the motor unit 17 driven by the controller unit 18. As a result, the air that has flowed into the compressor from the outside of the housing 10 is compressed.

The housing 10 accommodates various members included 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 hexahedral shape having an upper portion 10A and a lower portion 10B facing each other, a front portion 10D and a rear portion 10E facing each other, and one side portion and the other side portion facing each other. Is doing. The space surrounded by the upper portion 10A, the lower portion 10B, the front portion 10D, the rear portion 10E, one side portion, and the other side portion serves as an accommodation space for accommodating various members included in the air compression device X1.

In the first embodiment, in the air compression device X1, the upper portion 10A faces the floor portion 100a, the front portion 10D is located on the side wall portion 100c side in the first direction A1, and the side wall portion 100d side (in the vehicle width direction). It is mounted on the railroad 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 10C provided between the upper portion 10A and the lower portion 10B so as to divide the accommodation space inside the housing 10 into two. In the first embodiment, as shown in FIGS. 4 and 5, of the accommodation space inside the housing 10, the space formed between the upper portion 10A and the intermediate portion 10C accommodates the compressor unit 19. One accommodation space S1 is provided, and the space formed between the intermediate portion 10C and the lower portion 10B is the second accommodation space S2 for accommodating the motor unit 17 . That is, in the first embodiment, the motor unit 17 and the compressor unit 19 are arranged so as to be offset from each other in the vertical direction C1. As a result, the occupied area of the air compressor X1 in the horizontal direction can be reduced.

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

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

Motor unit 17, as shown in FIG. 4, is accommodated in the second housing space S 2 of the housing 10. Motor unit 17 includes a first motor 17A, a B second motor 17. A first motor 17A and the second motor 17 B, as shown in FIG. 6, are arranged alongside one another. In the first embodiment, the direction in which the first motor 17A and the second motor 17 B are arranged has a direction parallel to the second direction B1. A first motor 17A and the second motor 17 B, are each other and form the same structure, in a symmetric position in the second direction B1. Hereinafter, the first motor 17A will be described.

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

The output shaft 171 projects from the motor body 172 toward one side of the housing 10. The drive pulley 174 is attached to the protruding output shaft 171. As a result, the motor 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 so that the motor main body 172 and the drive pulley 174 are arranged in the second direction B1.

A plurality of cooling fins 172a are formed on the outer peripheral surface of the motor body 172. Each cooling fin 172a extends along the axial direction of the output shaft 171 and is arranged at intervals 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 mounted coaxially with 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 side opposite to the drive pulley 174 with the motor body 172 sandwiched between them. 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 in response to the rotation of the output shaft 171 accompanying the drive of the motor main body 172, and generates an air flow in the second accommodation space S2 inside the housing 10. By passing between the cooling fins 172a, the airflow flows through the second accommodation space S2 along the second direction B1.

The controller unit 18 is attached to the rear portion 10E of the housing 10 outside the housing 10. The controller unit 18 has a box-shaped member and a controller housed inside the box-shaped member and controlling the drive of the motor unit 17. The motor main 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 drive of the motor unit 17.

Compressor unit 19, as shown in FIG. 4, is accommodated in the first housing space S 1 of the housing 10. Specifically, the compressor unit 19 is mounted on the intermediate portion 10C 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 with each other. The first compressor 19A is disposed above the first motor 17A, the second compressor 19B is disposed above the second motor 17 B in the vertical direction C1. Therefore, 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 as each other. The first compressor 19A and the second compressor 19B are arranged at intervals from each other in a symmetrical posture so that their respective suction ports face each other in the second direction B1. Hereinafter, the first compressor 19A will be described.

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

The input shaft 19c projects from the compressor main body 19a toward one side of the housing 10. The drive pulley 19b is attached to the protruding input shaft 19c. As a result, the compressor body 19a and the drive pulley 19b are aligned in the axial direction of the input shaft 19c. In the first embodiment, in the first compressor 19A, the compressor main body 19a and the drive pulley 19b are arranged so as to be arranged in the second direction B1. The drive pulley 19b of the first compressor 19A is arranged 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, the intermediate portion 10C of the housing 10 is formed with a through hole for communicating the first storage space S1 and the second storage space S2 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 each of the drive pulleys 19b and 174 in each of the accommodation spaces S1 and S2. A belt B orbits around the drive pulleys 19b and 174 as the motor body 172 of the first motor 17A is driven, so that the driving force is transmitted to the compressor body 19a of the first compressor 19A via the input shaft 19c. To. As a result, the compressor body 19a of the first compressor 19A will generate compressed air.

As shown in FIGS. 5 and 7, the air compressor 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 aftercooler 22 for cooling the compressed air flowing through the outflow pipe portion 21 are further provided.

The guide path 20 is housed in the first storage space S1 inside the housing 10. Specifically, as shown in FIG. 7, the guide path 20 is arranged 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 guideway 20 extends along the first direction A1. The guide path 20 has an inflow opening 20a for allowing air to flow into the inside, and a first outflow opening 20b and a second outflow opening 20c for allowing the air to flow into the first and second compressors 19A and 19B. ..

The inflow opening 20a is formed on the surface of the guide path 20 facing the front portion 10D 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. As a result, 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 the suction port in the first compressor 19A through the connecting pipe of the abbreviation. As a result, 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 the suction port in the second compressor 19B through the connecting pipe of the abbreviation. As a result, 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.

Outlet pipe portion 21 has a first outlet pipe 21a connected to the compressor body 19a of the first compressor 19A, a second outlet pipe 21b connected to the compressor body 19a of the second compressor 19B, the first outlet pipe 21a and the second outlet pipe It has a manifold portion 21c for connecting the 21b, and a merging pipe 21d through which the compressed air merged in the manifold portion 21c flows.

As shown in FIG. 4, the first outflow pipe 21a is connected to the surface of the first compressor 19A facing the second compressor 19B, extends toward the front portion 10D, and bends upward in the vicinity of the front portion 10D. , Extends towards the top 10A. The air that has flowed 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 outflow pipe 21b is connected to the surface of the second compressor 19B facing the first compressor 19A, extends toward the front portion 10D, and bends upward in the vicinity of the front portion 10D. , Extends towards the top 10A. The air that has flowed 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.

As shown in FIGS. 4 and 5, the manifold portion 21c is attached to the upper portion 10A of the housing 10. Specifically, the manifold portion 21c is housed in the first storage space S1 inside the housing 10, and is located on the front portion 10D side between the first compressor 19A and the second compressor 19B in the upper portion 10A. It is installed. 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 portion 21c. ..

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

Here, as shown in FIG. 5, an outlet 10c that communicates the first accommodation space S1 with the outside of the housing 10 is formed in a portion of the rear portion 10E of the housing 10 that surrounds the first accommodation space S1. Has been done. Specifically, the outlet 10c is formed at a portion of the rear portion 10E on the upper portion 10A side. Then, outside the housing 10, an external duct portion 40 is attached to the rear portion 10E so as to cover the outlet 10c. The merging pipe 21d extends from the front portion 10D side to the rear portion 10E side, and extends into the external duct portion 40 provided on the outside of the housing 10 through the outlet 10c formed in the rear portion 10E.

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

The protective cover 22b is arranged outside the housing 10 at the rear and above the external duct portion 40 attached to the rear portion 10E. The meandering pipe 22a extends inside the protective cover 22b while meandering in the second direction B1. The merging pipe 21d arranged in the external duct portion 40 attached to the rear portion 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 arranged below the outer duct portion 40 between the rear portion 10E and the protective cover 22b. The cooler fan 22c sucks in the 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 as to be able to open and close the cooling air inlet 10b formed in the front portion 10D of the housing 10.

The cooling air inlet 10b is formed to cool various members inside the housing 10 by allowing air to flow into the housing 10. The cooling air inlet 10b is formed in the front portion 10D 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 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. As a result, the cooling air inlet 10b communicates the outside of the housing 10 with 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 comprises a louver 161 in which a plurality of elongated plate-shaped members are assembled in parallel at intervals from 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 to the cooling air inlet 10b.

A hinge 161a and a lever lock 161b are attached to the louver 161. The hinge 161a fixes the upper end portion of the louver 161 in the vertical direction C1 to the front portion 10D 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 compression device X1, the cooling air inlet 10b can be opened by opening the lever lock 161b and rotating the filter panel 16 around the hinge 161a as the rotation center.

The air that has passed through the louver 161 is dust-removed by the filter unit 162. Then, the air from which the dust has been removed flows into the second accommodation space S2 inside the housing 10 through the cooling air inflow port 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 so as to penetrate the intermediate portion 10C in the vertical direction C1. The through hole 10e is formed on the front portion 10D side of 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. Therefore, the air that has flowed into the second accommodation space S2 inside the housing 10 through the cooling air inflow port 10b may move to the first accommodation space S1 through the through hole 10e before reaching the motor unit 17. It is possible.

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

As shown in FIGS. 3 and 4, the air compressor X1 further includes a panel unit 11 provided so as to be able to open and close the opening 10a formed in the front portion 10D of the housing 10.

The opening 10a is formed for maintaining the compressor unit 19 and the like housed inside the housing 10. The opening 10a is formed in the front portion 10D 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. As a result, the opening 10a communicates the outside of the housing 10 with the first accommodation space S1 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. It has 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 portion 121 and a bulging portion 122 that bulges outward from the main body portion 121 toward the outside of the housing 10.

The main body 121 has a flat plate shape along the front 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 in a state of being closed by the panel member 12. In the first embodiment, the main body 121 is bolted to the front 10D so that the opening 10a can be opened. Therefore, in the air compression device X1, the opening 10a can be opened by removing the bolts that fix 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. It is possible.

In the first embodiment, the main body 121 of the panel member 12 is fixed to the front 10D by bolts, but the present invention is not limited 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, as in the case of the filter panel 16, for example. 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 121a that penetrates the main body 121. The compression air inflow port 121a is for allowing the air outside the housing 10 to flow into the guide path 20 inside the housing 10. The compression air inflow port 121a is formed at a position facing the inflow opening 20a of the guide path 20. In the first embodiment, the compression air inflow port 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 20a of the guide path 20.

The bulging portion 122 is formed by denting a part of the back surface of the panel member 12 toward the surface side of the panel member 12. That is, the bulging portion 122 is integrally formed with the main body portion 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 has an opposing 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 portion 122b is located in front of the main body portion 121. Specifically, the facing portion 122b is located on the opposite side of the compressor unit 19 with the main body portion 121 sandwiched in the orthogonal direction.

The side portion 122a is a portion extending in the orthogonal direction so as to connect the facing portion 122b and the main body portion 121. The side portion 122a faces the side surface 14c of the fan device unit 14. The side portions 122a include a first portion 122c extending in the horizontal direction above the fan apparatus unit 14, second and third portions 122d and 122e extending in the vertical direction on both sides of the fan apparatus unit 14, and the fan apparatus unit 14. Includes a fourth portion 122f, which extends horizontally 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 in a single connection. In the first embodiment, the intermediate portion of the fourth portion 122f is recessed toward the first portion 122c so as to avoid the compression air inflow port 121a formed in the main body portion 121.

The bulging portion 122 has a first bulging portion 122A and a second bulging portion 122B. The first bulging portion 122A overlaps with the first compressor 19A in the orthogonal direction orthogonal to the front portion 10D. The second bulging portion 122B overlaps with 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 located 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 the 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 inflow port 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, but the present invention is not limited to this, and the first bulging portion 122A and the second bulging portion 122B May be independent of each other. In this case, the first concave space S3 and the second concave space S4 are independent spaces.

The fan device unit 14 sends out the air inside the housing 10 toward the compressor unit 19. The fan device unit 14 is located offset 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 has a first fan device 14A partially arranged in the first concave space S3 and a second fan device 14B partially arranged in the second concave space S4. In the first embodiment, the first fan device 14A and the second fan device 14B are composed of two axial flow fans arranged so as to overlap each other in the orthogonal direction orthogonal to the front portion 10D. The number of axial flow fans constituting each of the first fan device 14A and the second fan device 14B may be one or three or more.

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

The first fan device 14A is located on the opposite side of the suction port 14a for sucking the air flowing into the inside of the housing 10 from the cooling air inlet 10b and the air outlet 14b for sending out the air. And a mounting portion 14d for mounting the first fan device 14A to the panel member 12. The first fan device 14A has a configuration in which an impeller is arranged inside a tubular side surface 14c. The suction port 14a is formed by an opening on one end side of the tubular side surface 14c, and the outlet 14b is formed by an opening on the other end side of the side surface 14c. In the first embodiment, the suction port 14a and the delivery port 14b have a substantially circular shape.

In the first fan device 14A, as shown in FIG. 5, the suction port 14a faces the facing portion 122b of the first bulging portion 122A at intervals, and the delivery port 14b faces the first compressor 19A side. Arranged in a posture. Specifically, the first fan device 14A is arranged from the first concave space S3 to the first accommodation space S1 so that the suction port 14a is located in the first concave space S3. More specifically, the end of the side surface 14c of the first fan device 14A on the side where the suction port 14a is provided is closer to the facing portion 122b of the side portion 122a than the end on the first compressor 19A side. It is located on the side. Further, the first fan device 14A is arranged so that the axial center of the axial flow fan constituting the first fan device 14A deviates 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 in the radial direction of the first fan device 14A from the side surface 14c of the first fan device 14A. The mounting portion 14d of the first fan device 14A is mounted on the panel member 12 via bolts. As a result, the first fan device 14A is attached to the panel member 12 so 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 at a distance. It is installed. The first fan device 14A may be fixed to the panel member 12 so that the entire first fan device 14A is located in the first concave space S3.

Although detailed description of the second fan device 14B will be omitted, a part of the side surface 14c of the second fan device 14B is a side portion 122a of the second bulging portion 122B, similarly to the first fan device 14A. It is fixed to the panel member 12 so as to face the panel member 12 at intervals.

The adapter unit 15 guides the air sent from the outlet 14b of the fan device unit 14 to the compressor unit 19. The adapter unit 15 has a first adapter 15A fixed to the outlet 14b side of the first fan device 14A, and a second adapter 15B fixed to the outlet 14b of the second fan device 14B. The first adapter 15A is arranged between the inlet 14b of the first fan device 14A and the first compressor 19A. The second adapter 15B is arranged between the inlet / 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 as each other. Hereinafter, the first adapter 15A will be described.

As shown in FIG. 9, the first adapter 15A is a plate-shaped member having a rectangular shape. The first adapter 15A has one main surface (first main surface) 15a facing the outlet 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, the main surface 15a is formed with a circular one-sided opening (first opening) 15c corresponding to the shape of the delivery port 14b. On the other main surface 15b, a rectangular other opening (second opening) 15d corresponding to the rectangular outer shape of the first compressor 19A in the first direction A1 is formed. 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 delivery port 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 arranged 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, and the first concave space S3 and the second concave space S4. It has a partition portion 13b arranged in a space above the compression air inflow port 121a so as to partition. The peripheral edge portion 13a and the partition portion 13b are arranged at intervals from the fan device unit 14.

In the first embodiment, the peripheral edge portion 13a is provided over the entire first portion 122c, second portion 122d, third portion 122e, fourth portion 122f, and facing portion 122b of the lateral portion 122a. .. The peripheral edge portion 13a may be provided only on a part of the side portion 122a and the facing portion 122b. For example, the peripheral edge portion 13a may be provided only on the facing portion 122b. Further, the peripheral edge portion 13a may be provided only on the first portion 122c of the lateral portion 122a.

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

The outflow guide portion 23 is arranged behind the compressor unit 19 in the first accommodation space S1 inside the housing 10. Specifically, the outflow guide unit 23 is located on the opposite side of the fan device unit 14 with the compressor unit 19 in between. 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 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.

The facing portion 23b is formed with a communication hole 23c that communicates with the outlet 10c formed on the outer surface of the housing 10. The communication hole 23c is located off the axis of the axial flow fan constituting the fan device unit 14. The merging pipe 21d of the outflow pipe portion 21 extends into the outflow guide portion 23 along the upper portion 10A, and further extends to the outer duct portion 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 portion 23a and the entire facing portion 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 of 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 accommodation space S2 inside the housing 10 through the cooling air inflow port 10b. A part of the air flowing into the second accommodation space S2 passes through the through hole 10e of the intermediate portion 10C in response to the suction of the suction port 14a of the first fan device 14A before reaching the motor unit 17, and the first accommodation space S1 Ascend to. Then, the air rising into the first accommodation space S1 flows into the passage F1 formed between the side surface 14c of the first fan device 14A and the sound absorbing member 13 provided at the fourth portion 122f of the side portion 122a. .. The air that has flowed into the passage F1 flows to the facing portion 122b side, wraps around to the suction port 14a while being bent by the sound absorbing member 13 provided in the facing portion 122b, and is sucked into the suction port 14a.

As described above, in the air compression device X1, the suction port 14a in the fan device unit 14 is arranged so as to wrap the air inside the housing 10 toward the suction port 14a and suck the air. Specifically, the facing portion 122b of the bulging portion 122 is arranged to face the side surface 14c so that the air inside the housing 10 wraps around from the side surface 14c of the fan device unit 14 toward the suction port 14a. Has been done. That is, the bulging portion 122 according to the first embodiment corresponds to an inflow guide portion that allows the air inside the housing 10 to wrap around toward the suction port 14a. Then, 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. , 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 the opposite portion 23b of the outflow guide portion 23 It is bent by the sound absorbing member 24 provided in. Then, the bent air is guided to the communication hole 23c formed in the peripheral portion of the facing portion 23b while being restricted from moving in the vertical direction C1 by the side portion 23a of the outflow guide portion 23. The air flowing through the communication holes 23c and the outlet 10c cools the compressed air discharged from the compressor and flowing through the merging pipe 21d.

The air guided to the communication hole 23c flows into the inside of 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 arranged behind the external duct portion 40. As a result, the air flowing 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 the cooler fan 22c located below the external duct portion 40.

As described above, in the air compressor X1 according to the first embodiment, the air that has flowed into the housing 10 through the cooling air inlet 10b wraps around toward the suction port 14a of the fan device unit 14. It is sucked into the suction port 14a 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 is bent by sucking air through the suction port 14a of the fan device unit 14. Can be done. That is, in the air compressor X1 according to the first embodiment, the flow distance of air from the cooling air inlet 10b to the suction port 14a can be lengthened, and the air can be bent when the air flow direction is bent. It will collide with each member in the housing 10 in large numbers. As a result, the noise generated in the housing 10 of the air compressor X1 can be reduced.

Further, in the air compression device X1 according to the first embodiment, the bulging portion 122 as the inflow guide portion is arranged so as to face the side surface 14c of the fan device unit 14. Therefore, the air inside the housing 10 can be guided to the suction port 14a through the passage F1 between the side surface 14c of the fan device unit 14 and the bulging portion 122. As a result, the air inside the housing 10 can be reliably circulated to the suction port 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. While doing so, it will be guided to the suction port 14a. As a result, 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, a bulging portion 122 as an inflow guide portion is formed in the panel member 12 that closes the opening 10a formed for performing maintenance inside the housing 10. ing. Therefore, it is not necessary to individually provide the inflow guide portion inside the housing 10.

Further, 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 and the bulging portion 122 formed in the panel member 12 The fan device unit 14 attached to the panel member 12 also moves at the same time. In particular, in the air compression device X1 according to the first embodiment, since the adapter unit 15 is attached to the fan device unit 14, when the panel member 12 is moved, the adapter unit 15 also moves at the same time. Therefore, 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.

Further, in the air compression device X1 according to the first embodiment, the sound absorbing member 13 attached to the bulging portion 122 can further reduce the noise caused by the air flowing along the bulging portion 122.

Further, in the air compression device X1 according to the first embodiment, the sound absorbing member 13 is provided between the upper portion 10A of the housing 10 and the fan device unit 14. Therefore, it is possible to efficiently reduce the noise generated from the floor portion 100a for a person who gets inside the railway vehicle while being attached to the floor portion 100a of the railway vehicle 100.

Further, in the air compression device X1 according to the first embodiment, the sound absorbing member 13 attached to the facing portion 122b is the platform and the fan device unit 14 when the railroad vehicle 100 arrives at the platform on the side wall portion 100c side. It will be located between and. Therefore, it is possible to efficiently reduce the noise to the person located on the platform.

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 main body 19a. Therefore, even if the air introduced into the fan device unit 14 is lost due to the suction port 14a sucking the air inside the housing 10 so as to wrap around toward the suction port 14a, the air is introduced from the transmission port 14b. The delivered air can be supplied to the compressor unit 19 with high efficiency. As a result, the compressor unit 19 can be sufficiently cooled while reducing noise.

Further, 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 offset in the vertical direction C1. Therefore, the flow direction of the air flowing into the inside of the housing 10 from the cooling air inflow port 10b is bent in the vertical direction C1 at least once. Specifically, the air that has flowed from the cooling air inlet 10b into the second accommodation space S2 inside the housing 10 enters the first accommodation space S1 in response to the suction of the suction port 14a of the fan device unit 14. It bends in the direction of rising. Therefore, 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 the 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 railroad vehicle 100 can be suppressed to a small size, and the noise can be sufficiently reduced.

Further, in the air compressor X1, since the motor unit 17 has a motor fan 173 coaxially attached to the motor body 172, it is not necessary to separately provide a ventilation fan inside the housing 10, and the housing 10 is large. It can be prevented from becoming.

Further, in the air compression device X1 according to the first embodiment, the airflow generated by the motor fan 173 passes between the cooling fins 172a and flows in the horizontal direction. That is, in the air compressor X1 according to the first embodiment, an air flow 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 generated by driving the motor fan 173. Airflow is generated. Therefore, it is possible to prevent air from being trapped inside the housing 10.

Further, in the air compressor X1 according to the first embodiment, the air sucked from the suction port 14a of the fan device unit 14 is sent out from the outlet 14b of the fan device unit 14 to cool the compressor unit 19. , It is bent by the outflow guide portion 23, and flows out from the outflow port 10c 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. , This can further reduce the noise.

Further, in the air compression device X1 according to the first embodiment, the merging 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 outlet 10c. ing. Therefore, the compressed air flowing through the merging pipe 21d is cooled by the air discharged from the outflow port 10c 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 has a main body portion 121 and a bulging portion 122 that bulges from the main body portion 121, but is not limited to this. For example, the panel member 12 is formed into a flat plate shape as a whole, and the outer surface of the panel member 12 is made flat while a part of the back surface is recessed toward the front surface side, so that the first and second concave spaces S3 and 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 becomes the inflow guide portion. Become.

Further, in the first embodiment, the bulging portion 122 as an 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 to this. For example, when the panel member 12 does not form a portion that functions as an inflow guide portion, an inflow guide portion that is independent of the panel member 12 may be arranged inside the housing 10.

Further, 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 the present invention is not limited to this. The fan device unit 14 does not have to be attached to the panel member 12, and may be provided, for example, inside the housing 10. The same applies to the adapter unit 15.

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

Further, in the first embodiment, the housing 10 has an intermediate portion 10C, and the motor unit is formed by forming the first accommodation space S1 and the second accommodation space S2 with the intermediate portion 10C interposed therebetween. The 17 and the compressor unit 19 are arranged so as to be offset 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 so as to be aligned with each other in the plane direction orthogonal to the vertical direction C1.

(Second Embodiment)
In the second embodiment shown below, the 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 plane direction will be described.

11 to 13 show the air compression device X2 according to the second embodiment. FIG. 11 is a perspective view of the air compressor X2 as viewed from the front portion 10D side of the housing 10. FIG. 12 is a perspective view of the air compressor X2 viewed from the side of the housing 10, and is a perspective view of the side and the upper portion 10A of the housing 10. FIG. 13 is a view of the inside of the air compression device X2 as viewed from the upper portion 10A side of the housing 10, and only the fan device unit 14 and the inflow guide portion 26 described later show a predetermined cross section. In addition, in FIGS. 11 to 13, among the constituent members of the air compression device X2, those similar to the air compression device X1 are designated by the same reference numerals as those 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 with the first accommodation space S1 which is a space above the intermediate portion 10C inside the housing 10. The filter panel 16 is attached to the front portion 10D of the housing 10 so that the cooling air inlet 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 housed in the second storage space S2. Further, the motor unit 17 and the compressor unit 19 are housed in the first storage space S1.

The motor unit 17 has a first motor 17A and a second motor 17A arranged in the first accommodation space S1. The first and second motors 17A and 17B are arranged closer to the rear portion 10E than the front portion 10D in a posture in which the output shafts extend in the direction in which the front portion 10D and the rear portion 10E are aligned.

The compressor unit 19 has a first compressor 19A and a second compressor 19B arranged side by side in the second accommodation space S2. The first and second compressors 19A and 19B are arranged closer to the front portion 10D than the rear portion 10E so as to be aligned with the first and second motors 17A and 17B in the direction in which the front portion 10D and the rear portion 10E are aligned. Has been done. Specifically, the first and second compressors 19A and 19B are arranged so that their output shafts overlap with the output shafts of the first and second motors 17A and 17B, and the first and second motors 17A and 17B It is connected to each. The first and second compressors 19A and 19B face the filter panel 16 in the direction in which the front portion 10D and the rear portion 10E are aligned.

The fan device unit 14 has 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 side by side. 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 side by side. Hereinafter, the first fan device 14A will be described.

As shown in FIG. 13, the first fan device 14A is arranged between the first compressor 19A and one side of the housing 10. Specifically, in the first fan device 14A, the suction port 14a faces one side surface of the housing 10 at a distance, and the delivery port 14b faces the first compressor 19A. Has been done. 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 inside of the housing 10 from the cooling air inflow port 10b. In the first embodiment, the first fan device 14A is arranged side by side with a part of the cooling air inlet 10b in the direction in which the first motor 17A and the first compressor 19A are lined up.

As shown in FIG. 13, the air compressor X2 includes a space 27 and a space 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 unit 29 from which the air of the unit 27 is discharged, and a discharge fan 28 that sends the air of the space unit 27 to the discharge unit 29.

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

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

Here, the air compression device X2 is further provided with 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 storage space S1 inside the housing 10. The inflow guide unit 26 has a first inflow guide unit 26A and a second inflow guide unit 26B. The first inflow guide portion 26A causes the air flowing into the inside of the housing 10 from the cooling air inflow port 10b to wrap around 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 flowing into the inside of the housing 10 from the cooling air inflow port 10b to wrap around from the side surface 14c of the second fan device 14B toward the suction port 14a. The first inflow guide portion 26A is arranged between the first compressor 19A and one side surface of the housing 10, and the second inflow guide portion 26B is provided with the second compressor 19B and the other side surface of the housing 10. It is placed between.

The first inflow guide portion 26A and the second inflow guide portion 26B have the same structure, and are arranged in a symmetrical posture in the direction in which the first compressor 19A and the second compressor 19B are arranged side by side. Hereinafter, the first inflow guide unit 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 in the central portion thereof. The compressor holding portion 261 of the first inflow guide portion 26A is arranged so as to face the first compressor 19A in the direction in which the first compressor 19A and the second compressor 19B are aligned. The fan opening 261a formed in the compressor holding portion 261 of the first inflow guide portion 26A communicates with the transmission port 14b of the first fan device 14A. As a result, the air sent out 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 of the housing 10. The upper guide portion 262 of the first inflow guide portion 26A faces the side surface 14c of the first fan device 14A above the first fan device 14A. The upper guide portion 262 is arranged at a distance from the upper portion 10A of the housing 10, and is arranged at a distance from one side 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 on the front portion 10D side of the housing 10) toward one side 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 portion 263 is connected to the upper guide portion 262. The side guide portion 263 is arranged at a distance from the front portion 10D of the housing 10 and at a distance from one side portion of the housing 10. A sound absorbing member 30 is attached to the inner surface of the side guide portion 263 (the surface on the side of the first fan device 14A).

As shown in FIG. 13, the side guide portion 263 of the first inflow guide portion 26A is located between the cooling air inflow port 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 inflow port 10b are aligned. It fits. In the second embodiment, in the direction in which the first compressor 19A and the second compressor 19B are lined up, one end of the side guide portion 263 of the first inflow guide portion 26A on one side of the housing 10 is for cooling. It is located closer to the side of the outer edge of the air inlet 10b. The suction port 14a of the first fan device 14A is located closer to the first compressor 19A than 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 accommodation space S1 inside the housing 10 through the cooling air inflow port 10b. The air that has flowed into the first accommodation space S1 is bent at the side guide portion 263 in response to suction from the suction ports 14a of the first and second fan devices 14A and 14B. That is, the air that has flowed into the first accommodation space S1 flows toward one side portion and the other side portion of the housing 10 through the gap between the side guide portion 263 and the front portion 10D. Then, the air reaching one side portion and the other side portion of the housing 10 is bent at the side portion and is sucked into the suction port 14a so as to wrap around the side guide portion 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, the air inside the housing 10 passes through the upper guide portion 262 through the gap. It is also possible that air is sucked into the suction port 14a so as to wrap around.

As described above, in the air compression device X2 according to the second embodiment, the air inside the housing 10 can be circulated toward the suction port 14a by the inflow guide portion 26. As a result, the distance through which air flows from the cooling air inlet 10b to the suction port 14a of the fan device unit 14 can be lengthened, and noise is generated as in the air compressor X1 according to the first embodiment. It can be reduced.

Moreover, in the air compressor X2 according to the second embodiment, the flow direction of the air flowing into the space 27 after cooling the first and second compressors 19A and 19B can be bent by the discharge fan 28. Therefore, noise can be further reduced.

It should be considered that the first embodiment and the second embodiment described above are exemplary in all respects and are not restrictive. The scope of the present invention is indicated by the scope of claims rather than the description of the first and second embodiments described above, and further includes all modifications within the meaning and scope equivalent to the scope of claims. Is done.

Here, the embodiment will be outlined.

(1) In the above air compressor, the air that has flowed into the housing through the inflow port is sucked into the suction port so as to wrap around toward the suction port of the fan device unit, and is sent to the compressor unit. That is, in the above-mentioned air compression device, the flow direction of the air introduced into the housing can be bent by sucking air through the suction port of the fan device unit. That is, in the above-mentioned air compression device, the flow distance of air from the inflow port to the suction port can be lengthened, and when the air flow direction is bent, the air collides with a member in the housing in a large amount. .. Therefore, the noise generated in the housing of the air compression device can be reduced.

(2) The above-mentioned air compression device has an inflow guide portion arranged to face the side surface of the fan device unit so as to circulate the air sucked into the suction port from the side surface of the fan device unit toward the suction port. It is preferable to further prepare.

In the above air compression device, since the inflow guide portion is arranged 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. As a result, the air inside the housing can be reliably circulated to the suction port.

(3) The inflow guide portion preferably has 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.

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

(4) The above-mentioned air compression device may further include a panel member formed in the housing and provided so as to be able to open and close an opening for performing maintenance inside the housing. In this case, the inflow guide portion is preferably configured integrally with the panel member.

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

(5) The fan device unit is preferably 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 integrally formed with the panel member and the fan device unit attached to the panel member are also included. Will move together. Therefore, 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) The inflow port and the fan device unit are preferably arranged so as to be offset in the vertical direction.

In the above air compressor, the inflow port and the fan device unit are arranged so as to be offset in the vertical direction, so that the flow direction of the air flowing into the housing from the inflow port is bent in the vertical direction at least once. .. Therefore, in the above-mentioned air compressor, the area of the housing in the horizontal direction can be suppressed to be smaller than in the case where the noise is reduced by repeatedly bending the air flow direction only in the horizontal direction. That is, in the above-mentioned air compression device, for example, the installation area of the air compression device when mounted on a vehicle can be suppressed to a small size, and noise can be sufficiently reduced.

(7) The air compression device may further include an inflow guide portion that allows air that has flowed into the inside of the housing from the inflow port to circulate toward the suction port. In this case, it is preferable that the inflow guide portion is arranged between the inflow port and the fan device unit. Further, it is preferable that the suction port of the fan device unit is within the width of the inflow guide portion in the direction in which the fan device unit and the inflow port are aligned.

In the above air compression device, since the suction port is within the width of the inflow guide portion provided between the inflow port and the fan device unit, the air flowing into the inside of the housing from the inflow port is sucked. It will flow around the inflow guide according to the suction of the mouth. That is, in the above-mentioned air compression device, the air that has flowed into the inside of the housing can be circulated toward the suction port by the inflow guide portion, whereby noise can be reduced.

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

In the above-mentioned air compression device, the noise caused by the air flowing along the inflow guide portion can be further reduced by the sound absorbing member attached to the inflow guide portion.

(9) The sound absorbing member is preferably 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 portion and the fan device unit housing. Therefore, for example, when the air compressor is installed under the floor of the vehicle, the noise to the person who gets into the vehicle can be efficiently reduced.

(10) The air compressor may further include an adapter unit having a through hole for guiding the 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 outlet on the fan device unit side and a shape corresponding to the outer shape of the compressor unit on the compressor unit side. Is preferable.

In the above-mentioned air compressor, even if the air introduced into the fan device unit is lost due to the suction port sucking the air in the housing so as to wrap around toward the suction port, the air is delivered from the outlet. Air can be supplied to the compressor unit with high efficiency. As a result, the compressor unit can be sufficiently cooled while reducing noise.

(11) The above air compressor has a motor body for driving the compressor unit and a motor fan coaxially attached to the motor body and generating an air flow according to the drive of the motor body. It is preferable to further include a motor unit.

In the above air compression device, since the motor unit has a motor fan coaxially mounted with the motor body, it is not necessary to separately provide a ventilation fan in the housing, and it is possible to prevent the housing from becoming large.

(12) The housing may have an outlet for allowing air to flow out from the housing. In this case, the air compressor may further include an outflow guide portion provided so as to bend the flow direction of the air flowing on the opposite side of the fan device unit with the compressor unit 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 unit is located on the opposite side of the fan device unit with the compressor unit in between. It is bent by and 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, there is provided an air compression device capable of reducing noise.

Claims (12)

With the compressor unit
A housing that houses the compressor unit and has an inflow port that allows air to flow inside.
It has a tubular side surface, an impeller arranged inside the side surface, a suction port having an opening formed at one end of the side surface, and an outlet having an opening formed at the other end of the side surface. , fan device unit wherein the suction port is sent toward the compressor unit through the saw pulls in fresh air enclosure has flowed into the body, the delivery port facing the air sucked from the suction port to the compressor unit through the inlet When,
An inflow guide portion which is arranged between the inflow port and the suction port and forms a passage between the side surface of the fan device unit is provided.
An air compressor in which air flows in the passage in a direction opposite to the flow direction of air flowing from the suction port of the fan device unit to the outlet . The inflow guide portion, the air sucked into the suction port so as to the fan device the crowded around and toward the side surface on the inlet of the unit, it is placed opposite to the side surface, according to claim 1 Air compressor. The air compressor 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. Further provided with a panel member formed in the housing and provided so as 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 integrally formed with the panel member. The air compression device according to claim 4, wherein the fan device unit is attached to the panel member. The inlet, the fan device is placed below the side of the unit, an air compressor according to any one of claims 1 to 5. The inflow guide portion circulates the air that has flowed into the inside of the housing from the inflow port toward the suction port.
The suction port of the previous SL fan device unit, the fan in the device unit and the inlet and are aligned direction is within the range of the width of the inflow guide part, the air compression device according to claim 1. The air compression device according to any one of claims 1 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 the upper part of the housing and the fan device unit. Further comprising an adapter unit having a through-hole for guiding the feed air delivered from the outlet of the fan device unit to the compressor unit,
The through hole of the adapter unit has a shape corresponding to the shape of the air outlet on the fan device unit side, and has a shape corresponding to the outer shape of the compressor unit on the compressor unit side. The air compressor according to any one of 1 to 9. Claims 1 to further include a motor unit for driving the compressor unit, and a motor fan coaxially attached to the motor body and generating an air flow according to the drive of the motor body. The air compressor according to any one of 10. The housing has an outlet for letting air out of the housing.
The air compressor further includes an outflow guide portion provided so as to bend the flow direction of air flowing on the opposite side of the fan device unit with the compressor unit toward the outlet. The air compressor according to any one of 11.

Images