WO2016194754A1

WO2016194754A1 - Air compression device

Info

Publication number: WO2016194754A1
Application number: PCT/JP2016/065547
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: EP3306089B1; CN107614874A; SG11201709368XA; TWI612260B; JPWO2016194754A1; CN107614874B; TW201704695A; EP3306089A4; EP3306089A1; JP6761412B2

Abstract

Provided is an air compression device comprising: a first compressor including a first port wall having a first suction port formed therein; a second compressor including a second port wall having a second suction port formed therein; and an intake duct that guides air to the first suction port and the second suction port. The first port wall and the second port wall are arranged facing each other. The intake duct is arranged between the first port wall and the second port wall.

Description

Air compressor

The present invention relates to an air compression device that generates compressed air.

Compressed air generating device is used for various purposes. Compressed air generated by an air compressor mounted on a vehicle (for example, a railway vehicle) may be supplied to a brake device that applies a braking force to the vehicle.

Patent Document 1 proposes an air compression device including a plurality of compressors. If the air compressor includes a plurality of compressors, a large amount of compressed air is generated in a short time. In addition, compressed air can continue to be generated by other compressors even after some of the plurality of compressors fail.

If the air compressor has a plurality of compressors, it is necessary to form a pipeline for guiding air to each of the plurality of compressors. Therefore, if the designer intends to incorporate a plurality of compressors into the air compressor, the designer needs to give large dimension values to the air compressor. This may make it difficult to mount the air compressor on other devices (eg, vehicles).

Utility Model Registration No. 3150077

An object of the present invention is to provide a small air compression device including a plurality of compressors.

An air compressor according to an aspect of the present invention includes a first compressor including a first port wall in which a first intake port is formed, a second compressor including a second port wall in which a second intake port is formed, An intake pipe for guiding air to the first intake port and the second intake port. The first port wall and the second port wall are disposed to face each other. The intake pipe line is disposed between the first port wall and the second port wall.

The above-described technology makes it possible to give a small dimension value to an air compression apparatus including a plurality of compressors.

The objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

It is a conceptual diagram of the air compressor of 1st Embodiment. It is a conceptual diagram of the air compressor of 2nd Embodiment. It is a schematic perspective view of the air compression apparatus of 3rd Embodiment. FIG. 3B is another perspective view of the air compression device shown in FIG. 3A. It is a schematic plan view showing the internal structure of the air compression apparatus shown in FIG. 3A. FIG. 3B is a schematic cross-sectional view showing the structure of the proximal end portion of the intake pipe of the air compression device shown in FIG. 3A. FIG. 6 is a schematic enlarged cross-sectional view of the intake pipe shown in FIG. 5. 3B is a schematic enlarged perspective view of a delivery pipe of the air compression device shown in FIG. 3A. FIG. 3B is a schematic cross-sectional view of a duct portion of the air compression device shown in FIG. 3A. FIG. 3B is a schematic perspective view of the air compression device shown in FIG. 3A. FIG. It is a schematic perspective view of the cold flow adjustment box of the air compressor shown in FIG. 3A (fourth embodiment). FIG. 10B is a schematic rear view of the cold flow adjustment box shown in FIG. 10A. FIG. 3B is a partial assembly view of the air compression device shown in FIG. 3A (fifth embodiment). It is a schematic perspective view of the 1st transmission part of the air compression apparatus shown by FIG. It is a partial assembly figure of the air compressor shown in Drawing 3A (6th embodiment). FIG. 14 is a schematic perspective view of a lower support plate of the air compression device shown in FIG. 13.

<First Embodiment>
If the compressed air is produced by a plurality of compressors, a large space is required to arrange the lines for supplying air to these compressors. The present inventors have devised a design technique for accommodating a pipe line in a narrow space. In the first embodiment, a technique that enables supply of air to a plurality of compressors in a narrow space will be described.

FIG. 1 is a conceptual diagram of an air compressor 100 according to the first embodiment. With reference to FIG. 1, an air compressor 100 is described.

The air compressor 100 includes a first compressor 210, a second compressor 220, and an intake pipe 300. The intake pipe 300 is connected to the first compressor 210 and the second compressor 220. When the first compressor 210 and / or the second compressor 220 are operated, the first compressor 210 and / or the second compressor 220 creates a negative pressure environment in the intake pipe 300. As a result, each of the first compressor 210 and the second compressor 220 can suck air through the intake pipe 300. Each of the first compressor 210 and the second compressor 220 compresses the sucked air and generates compressed air. The compressed air is supplied from each of the first compressor 210 and the second compressor 220 to other devices that use the compressed air. The supply of compressed air from each of the first compressor 210 and the second compressor 220 to other devices may depend on various known piping techniques. The principle of this embodiment is not limited to a specific technique for supplying compressed air to other devices.

For example, the compressed air may then be supplied to a brake device (not shown) for generating a braking force on the railway vehicle. Alternatively, the compressed air may be supplied to other devices that utilize the compressed air (eg, pneumatic equipment (not shown) used to open and close the vehicle door). The principle of this embodiment is not limited to a specific application of compressed air.

The first compressor 210 includes a first housing 211 and a compression mechanism 212. The compression mechanism 212 is accommodated in the first housing 211. The compression mechanism 212 may have a structure that a general scroll compressor has. Alternatively, the compression mechanism 212 may have a structure that a general rotary compressor has. Further alternatively, the compression mechanism 212 may have a structure that a general swing compressor has. Further alternatively, the compression mechanism 212 may have the structure of a typical reciprocating compressor. The principle of the present embodiment is not limited to a specific structure of the compression mechanism 212.

The first casing 211 includes a first port wall 213 that faces the second compressor 220. A first intake port 214 is formed in the first port wall 213. The intake pipe 300 is connected to the first intake port 214. Therefore, the first compressor 210 can take in air from the first intake port 214 and generate compressed air.

The second compressor 220 includes a second housing 221 and a compression mechanism 222. The compression mechanism 222 is accommodated in the second housing 221. The compression mechanism 222 may have a structure that a general scroll compressor has. Alternatively, the compression mechanism 222 may have a structure that a general rotary compressor has. Further alternatively, the compression mechanism 222 may have a structure that a general swing compressor has. Further alternatively, the compression mechanism 222 may have the structure of a typical reciprocating compressor. The principle of the present embodiment is not limited to a specific structure of the compression mechanism 222.

The second casing 221 includes a second port wall 223 that faces the first port wall 213 of the first compressor 210. A second intake port 224 is formed in the second port wall 223. The intake pipe 300 is connected to the second intake port 224. Therefore, the second compressor 220 can take in air from the second intake port 224 and generate compressed air.

The intake pipe 300 includes a main pipe 310, a first branch pipe 311, and a second branch pipe 312. Each of the first branch pipe 311 and the second branch pipe 312 branches from the main pipe 310. The first branch pipe 311 is connected to the first intake port 214 of the first compressor 210. The second branch pipe 312 is connected to the second intake port 224 of the second compressor 220.

When the first compressor 210 is operated, the intake pipe 300 becomes a negative pressure environment as described above. As a result, air flows from the main pipe 310 toward the first branch pipe 311. The first branch pipe 311 guides air to the first intake port 214. When the second compressor 220 is operated, the intake pipe 300 is in a negative pressure environment as described above. As a result, air flows from the main pipe 310 toward the second branch pipe 312. The second branch pipe 312 guides air to the second intake port 224.

Since the intake pipe 300 extends between the first port wall 213 and the second port wall 223, the first compressor 210 and the second compressor 220 may share a piping space for taking in air. it can. Therefore, the designer can provide the air compressor 100 with a narrow space as a piping space for taking in air.

In this embodiment, the intake pipe 300 is a branch pipe. Alternatively, the intake pipe may be formed using a pipe that exclusively guides air supplied to the first compressor 210 and a pipe that exclusively guides air supplied to the second compressor 220. In this case, these pipes are both disposed between the first port wall 213 and the second port wall 223. The principle of this embodiment is not limited to a specific structure of the intake pipe.

A base end portion (not shown) of the main pipe 310 of the intake pipe 300 communicates with a space outside a housing (not shown) that forms a housing space in which the first compressor 210 and the second compressor 220 are housed. May be. In this case, the air outside the housing can directly flow into the main pipe 310. Alternatively, the proximal end portion of the main pipe 310 may be accommodated in the housing. In this case, the air in the housing flows into the main pipe 310. The principle of the present embodiment is not limited to a specific arrangement position of the proximal end portion of the main pipe 310.

The intake pipe 300 may include a filter device that removes dust from the intake air. In this case, the purified air is supplied to the first compressor 210 and the second compressor 220. Alternatively, other suitable cleaning techniques may be used to clean the air supplied to the first compressor 210 and the second compressor 220. The principle of this embodiment is not limited to a specific cleaning technique.

Second Embodiment
The space in which the delivery line for guiding the compressed air is formed may also be shared by a plurality of compressors similarly to the intake line. In the second embodiment, an air compression apparatus including a plurality of compressors connected to delivery pipes formed in a common space will be described.

FIG. 2 is a conceptual diagram of the air compressor 100A of the second embodiment. The air compressor 100A will be described with reference to FIG. Elements having the same functions as those in the first embodiment are denoted by the same reference numerals. The description of the first embodiment is applied to elements having the same reference numerals.

As in the first embodiment, the air compressor 100A includes an intake pipe 300. The description of the first embodiment is applied to the intake pipe 300.

The air compressor 100A further includes a first compressor 210A, a second compressor 220A, a housing 400, and a delivery pipe line 500. The casing 400 forms an accommodation space 410 in which the first compressor 210A and the second compressor 220A are accommodated. Similar to the first embodiment, each of the first compressor 210 A and the second compressor 220 A receives air through the intake pipe 300. Each of the first compressor 210A and the second compressor 220A compresses the air received from the intake pipe 300 and generates compressed air. The compressed air is discharged out of the housing 400 through the delivery pipe line 500. In the present embodiment, the first compressed air is exemplified by the compressed air generated by the first compressor 210A. The second compressed air is exemplified by the compressed air generated by the second compressor 220A.

The delivery pipe line 500 may be connected to a cooling facility for cooling the compressed air. As a result, the compressed air is properly cooled. Thereafter, the compressed air may be dehumidified. As a result, dry compressed air is generated. The compressed air that has passed through the delivery line 500 may be subjected to various other processes. The principle of the present embodiment is not limited to a specific process performed on the compressed air after passing through the delivery pipe line 500.

As in the first embodiment, the first compressor 210A includes a compression mechanism 212. The description of the first embodiment is applied to the compression mechanism 212.

The first compressor 210A further includes a first casing 211A. The compression mechanism 212 is accommodated in the first casing 211A.

The first casing 211A includes a first port wall 213A facing the second compressor 220A. Similar to the first embodiment, a first intake port 214 is formed in the first port wall 213A. The description of the first embodiment is applied to the first intake port 214.

A first delivery port 215 is further formed on the first port wall 213A. The compressed air generated by the compression mechanism 212 is sent to the delivery pipe line 500 through the first delivery port 215.

As in the first embodiment, the second compressor 220A includes a compression mechanism 222. The description of the first embodiment is applied to the compression mechanism 222.

The second compressor 220A further includes a second housing 221A. The compression mechanism 222 is accommodated in the second housing 221A.

The second casing 221A includes a second port wall 223A facing the first port wall 213A of the first compressor 210A. Similar to the first embodiment, a second intake port 224 is formed in the second port wall 223A. The description of the first embodiment is applied to the second intake port 224.

A second delivery port 225 is further formed on the second port wall 223A. The compressed air generated by the compression mechanism 222 is sent to the delivery pipe line 500 through the second delivery port 225.

The delivery pipe line 500 includes a first delivery pipe 510, a second delivery pipe 520, a joining part 530, and a joining pipe 540. The first delivery pipe 510 is connected to the merging portion 530 and the first delivery port 215 of the first compressor 210A. The compressed air generated by the first compressor 210 A flows from the first delivery port 215 to the junction 530 through the first delivery pipe 510. The second delivery pipe 520 is connected to the merging portion 530 and the second delivery port 225 of the second compressor 220A. The compressed air generated by the second compressor 220 A flows from the second delivery port 225 to the junction 530 through the second delivery pipe 520. Since the first delivery pipe 510 and the second delivery pipe 520 are connected to the first delivery port 215 and the second delivery port 225, respectively, they are disposed between the first port wall 213A and the second port wall 223A.

Compressed air generated by the first compressor 210A merges with the compressed air generated by the second compressor 220A at the merge unit 530. The merge pipe 540 forms a delivery path from the merge section 530 to the outside of the housing 400. The compressed air flows from the junction 530 to the outside of the housing 400 through the junction pipe 540.

In the present embodiment, the delivery pipe line 500 includes a merging portion 530. Alternatively, the delivery line includes a pipe that guides the compressed air generated by the first compressor 210 A to the outside of the casing 400, and a pipe that guides the compressed air generated by the second compressor 220 A to the outside of the casing 400. , May be used. In this case, a joining element for joining the compressed air generated by the first compressor 210A to the compressed air generated by the second compressor 220A is not required. The principle of this embodiment is not limited to a specific structure of the delivery line.

<Third Embodiment>
The designer can design various air compressors based on the design principle described in relation to the second embodiment. In a third embodiment, an exemplary air compressor is described. In the following description, terms representing directions such as “up”, “down”, “left”, “right”, “front” and “back” are used. These terms are used for clarity of explanation. The principle of the air compression device is not limited by these terms.

3A and 3B are schematic perspective views of the air compression device 100B of the third embodiment. The air compressor 100B will be described with reference to FIGS. 2 to 3B.

The air compressor 100B includes a housing 400B, a cooling device 610, a dehumidifying device 620 (see FIG. 3B), a control device 630, a right connection unit 650, and a left connection unit 660. The housing 400B corresponds to the housing 400 described with reference to FIG.

The housing 400B includes a top plate 420 (see FIG. 3A), a bottom plate 430 (see FIG. 3B), and an outer peripheral wall 440. The top plate 420 and the bottom plate 430 are substantially rectangular. The top plate 420 is connected to the lower surface of the vehicle (not shown) by the right connection portion 650 and the left connection portion 660. The bottom plate 430 lies below the top plate 420. The outer peripheral wall 440 is erected between the top plate 420 and the bottom plate 430.

The outer peripheral wall 440 includes a front mounting wall 450 (see FIG. 3A), a rear mounting wall 460 (see FIG. 3B), a first wall 470 (see FIG. 3A), and a second wall 480 (see FIG. 3B). ) And an intake wall 479 (see FIG. 3A). The front mounting wall 450 forms a surface substantially parallel to a virtual extension surface of the side surface of the vehicle extending along the traveling direction of the vehicle. The intake wall 479 is disposed below the front mounting wall 450. The intake wall 479 allows the passage of air. Air outside the casing 400B flows into the casing 400B through the intake wall 479. The rear mounting wall 460 is erected on the opposite side to the front mounting wall 450. The first wall 470 is erected between the right edge of the front mounting wall 450 and the right edge of the rear mounting wall 460. The second wall 480 is erected between the left edge of the front mounting wall 450 and the left edge of the rear mounting wall 460.

3A, the front mounting wall 450 includes a holding plate 451 and a substantially cylindrical filter cover 452. The filter cover 452 is fixed to the holding plate 451. The filter cover 452 protrudes forward from the holding plate 451. A filter device, which will be described later, is provided behind the filter cover 452 to remove dust from the intake air.

The filter cover 452 includes a substantially cylindrical outer shell 453 and a lever lock 454. An operator who checks and repairs the air compressor 100B can manually operate the lever lock 454 without using a tool such as a driver or a wrench. The operator can operate the lever lock 454 to fix the outer shell 453 to the holding plate 451. In addition, the operator can operate the lever lock 454 to separate the outer shell 453 from the holding plate 451. When the outer shell 453 is removed from the holding plate 451, the operator can access a filter member (not shown) housed in the housing 400B. Therefore, the operator can easily replace the filter member. The lever lock 454 may be a commercially available general lock part. Instead of the lever lock 454, another suitable fixing mechanism may be used for the filter cover 452.

3B, the rear mounting wall 460 includes a holding plate 461 and a duct portion 462. The duct portion 462 protrudes rearward from the holding plate 461. In order to cool various devices in the housing 400B, cooling air flows in the housing 400B. The duct portion 462 forms an opening region that is long in the horizontal direction as an outlet for the cooling air used in the housing 400B. The cooling air used for cooling the inside of the housing 400B is sent out from the duct portion 462.

The cooling device 610 includes a cooling pipe 611 that extends in a meandering manner and a protective cover 612 that surrounds an extension region of the cooling pipe 611. The compressed air generated in the housing 400B flows into the cooling pipe 611. Since the cooling pipe 611 is disposed outside the casing 400B in which a heat source (for example, a compressor (not shown)) is accommodated, the compressed air in the cooling pipe 611 is efficiently cooled.

A part of the cooling pipe 611 faces the duct portion 462. Therefore, the compressed air in the cooling pipe 611 is also cooled by the cooling air blown out from the housing 400B.

The dehumidifying device 620 is disposed below the cooling device 610. Since the air compressor 100B does not have any devices present below the dehumidifier 620, even if leakage occurs due to a failure of the dehumidifier 620, other devices incorporated in the air compressor 100B are unlikely to be damaged.

As with the dehumidifying device 620, the control device 630 is disposed below the cooling device 610. The control device 630 is disposed next to the dehumidifying device 620. The control device 630 controls a compressor (not shown) and other devices arranged in the housing 400B.

The top plate 420 includes a front edge 421 (see FIG. 3A), a rear edge 422, a right edge 423 (see FIG. 3A), and a left edge 424 (see FIG. 3B). The front edge 421 extends along a corner formed by the top plate 420 and the front mounting wall 450. The rear edge 422 extends along a corner formed by the top plate 420 and the rear mounting wall 460. The right edge 423 extends along a corner formed by the top plate 420 and the first wall 470. The left edge 424 extends along a corner formed by the top plate 420 and the second wall 480.

As shown in FIG. 3A, the right connection portion 650 includes a right frame member 651 and two vibration isolation rings 652, 653. The right frame member 651 has a substantially C-shaped cross section. The right frame member 651 extends along the right edge 423 of the top plate 420. The anti-vibration ring 652 is disposed on a corner portion formed by the right edge 423 and the front edge 421. The anti-vibration ring 653 is disposed on a corner portion formed by the right edge 423 and the rear edge 422. The anti-vibration rings 652 and 653 are sandwiched between the right frame member 651 and the top plate 420. The anti-vibration rings 652 and 653 reduce vibration transmitted from the housing 400B to the vehicle (not shown).

The left connection portion 660 includes a left frame member 661 and two vibration isolation rings 662 and 663. The left frame member 661 has a substantially C-shaped cross section. The left frame member 661 extends along the left edge 424 of the top plate 420. The anti-vibration ring 662 is disposed on the corner formed by the left edge 424 and the front edge 421. The anti-vibration ring 663 is disposed on the corner formed by the left edge 424 and the rear edge 422. The anti-vibration rings 662 and 663 are sandwiched between the left frame member 661 and the top plate 420. The anti-vibration rings 662 and 663 reduce vibration transmitted from the housing 400B to the vehicle (not shown).

FIG. 4 is a schematic plan view showing the internal structure of the air compressor 100B. The top plate 420 is removed from the air compressor 100B shown in FIG. The air compressor 100B is further described with reference to FIGS.

The air compressor 100B includes a first compressor 210B, a second compressor 220B, an intake pipe 300B, and a delivery pipe 500B. The first compressor 210B corresponds to the first compressor 210A described with reference to FIG. The second compressor 220B corresponds to the second compressor 220A described with reference to FIG. The intake conduit 300B corresponds to the intake conduit 300 described with reference to FIG. The delivery line 500B corresponds to the delivery line 500 described with reference to FIG.

FIG. 5 is a schematic cross-sectional view showing the structure of the proximal end portion of the intake pipe 300B. The intake pipe 300B will be described with reference to FIGS. 2, 3A, 4 and 5. FIG.

As shown in FIG. 5, the intake pipe 300 B includes an intake duct 310 B, a filter device 320, and a trim seal 331. The intake duct 310B corresponds to the main pipe 310 shown in FIG. The filter device 320 is disposed between the filter cover 452 and the intake duct 310B. The trim seal 331 is a rubber ring member that hermetically connects the filter device 320 to the intake duct 310B.

The intake duct 310B is a hollow box member having a substantially rectangular parallelepiped shape. When the first compressor 210B and / or the second compressor 220B is operated, a negative pressure environment is generated in the intake duct 310B. As a result, the air outside the housing 400B passes through the filter device 320 through the filter cover 452. The filter device 320 removes dust floating in the inflowing air. The air cleaned by the filter device 320 flows into the intake duct 310B.

As shown in FIG. 4, the first compressor 210B includes a first port wall 213B. The second compressor 220B includes a second port wall 223B. The first port wall 213B corresponds to the first port wall 213A described with reference to FIG. The second port wall 223B corresponds to the second port wall 223A described with reference to FIG. The first port wall 213B faces the second port wall 223B.

The intake duct 310B extends from the filter device 320 toward the rear mounting wall 460 in the space between the first port wall 213B and the second port wall 223B. Therefore, the air compressor 100B can supply air from the outside of the housing 400B to the first compressor 210B and the second compressor 220B using a narrow space.

FIG. 6 is a schematic enlarged cross-sectional view of the intake pipe line 300B around the intake duct 310B. The intake pipe 300B will be further described with reference to FIGS.

The intake pipe line 300B includes two connecting

pipes

311B and 312B and two

trim seals

332 and 333. The connecting pipe 311B corresponds to the first branch pipe 311 shown in FIG. The connecting pipe 312B corresponds to the second branch pipe 312 shown in FIG. The trim seal 332 is used for connection between the connecting pipe 311B and the intake duct 310B. The trim seal 333 is used for connection between the connecting pipe 312B and the intake duct 310B.

The intake duct 310B includes a base wall (front wall) 341, a tip wall (rear wall) 342, a right wall 343, a left wall 344, a top wall 345 (see FIG. 4), and a bottom wall 346. ,including. A trim seal 331 is attached to the proximal end wall 341. A part of the filter device 320 is inserted through the trim seal 331 into the intake duct 310B. The distal end wall 342 is erected on the opposite side of the proximal end wall 341. The tip wall 342 forms the downstream end of the intake duct 310B. The right wall 343 faces the first port wall 213B of the first compressor 210B. The right wall 343 extends along the first port wall 213B between the proximal wall 341 and the distal wall 342. The left wall 344 faces the second port wall 223B of the second compressor 220B. The left wall 344 extends along the second port wall 223B between the proximal end wall 341 and the distal end wall 342. The top wall 345 closes a rectangular region surrounded by the upper edges of the base end wall 341, the tip end wall 342, the right wall 343, and the left wall 344. The bottom wall 346 closes a rectangular region surrounded by the lower edges of the proximal end wall 341, the distal end wall 342, the right wall 343, and the left wall 344.

The first port wall 213B of the first compressor 210B includes a cylindrical first intake port 214B that protrudes toward the right wall 343 of the intake duct 310B. The first intake port 214B corresponds to the first intake port 214 shown in FIG.

The trim seal 332 is attached to the right wall 343 of the intake duct 310B. The trim seal 332 is a rubber ring member. The trim seal 332 is substantially coaxial with the first intake port 214B of the first compressor 210B.

The connecting pipe 311B includes a first end 313 and a second end 314. The first end 313 is inserted into the trim seal 332. A part of the first end 313 may protrude into the intake duct 310B. The trim seal 332 hermetically seals between the first end 313 of the connection pipe 311B and the right wall 343 of the intake duct 310B. The second end 314 of the connecting pipe 311B is inserted into the first intake port 214B of the first compressor 210B. A suitable sealing member, such as a sealing tape, is utilized for the connection between the second end 314 of the connecting pipe 311B and the first intake port 214B of the first compressor 210B.

The second port wall 223B of the second compressor 220B includes a cylindrical second intake port 224B that protrudes toward the left wall 344 of the intake duct 310B. The second intake port 224B corresponds to the second intake port 224 shown in FIG.

The trim seal 333 is attached to the left wall 344 of the intake duct 310B. The trim seal 333 is a rubber ring member. The trim seal 333 is substantially coaxial with the second intake port 224B of the second compressor 220B.

The connecting pipe 312 B includes a first end 315 and a second end 316. The first end 315 is inserted into the trim seal 333. A part of the first end 315 may protrude into the intake duct 310B. The trim seal 333 hermetically seals between the first end 315 of the connecting pipe 312B and the left wall 344 of the intake duct 310B. The second end 316 of the connecting pipe 312B is inserted into the second intake port 224B of the second compressor 220B. A suitable sealing member, such as a sealing tape, is utilized for the connection between the second end 316 of the connecting pipe 312B and the second intake port 224B of the second compressor 220B.

As shown in FIG. 4, the delivery pipe line 500B includes a first delivery pipe 510B, a second delivery pipe 520B, a joining portion 530B, and a joining pipe 540B. The first compressor 210B receives air through the connecting pipe 311B (see FIG. 6). The first compressor 210B compresses the air supplied through the connecting pipe 311B and generates compressed air. The second compressor 220B receives air through the connecting pipe 312B (see FIG. 6). The second compressor 220B compresses the air supplied through the connecting pipe 312B and generates compressed air.

The first delivery pipe 510B is connected to the first port wall 213B of the first compressor 210B above the intake duct 310B. The second delivery pipe 520B is connected to the second port wall 223B of the second compressor 220B above the intake duct 310B. Therefore, as shown in FIG. 4, the first delivery pipe 510B and the second delivery pipe 520B partially overlap the intake duct 310B. The connection between the first delivery pipe 510B and the first port wall 213B of the first compressor 210B corresponds to the first delivery port 215 described with reference to FIG. The connection between the second delivery pipe 520B and the second port wall 223B of the second compressor 220B corresponds to the second delivery port 225 described with reference to FIG. The first delivery pipe 510B corresponds to the first delivery pipe 510 described with reference to FIG. The second delivery pipe 520B corresponds to the second delivery pipe 520 described with reference to FIG.

FIG. 7 is a schematic enlarged perspective view of the delivery pipe line 500B around the merging portion 530B. The delivery conduit 500B will be described with reference to FIGS.

As shown in FIG. 4, the merge portion 530B is disposed near the front mounting wall 450 of the casing 400B. The first delivery pipe 510B and the second delivery pipe 520B are bent toward the front mounting wall 450 and are connected to the merge portion 530. The compressed air generated by the first compressor 210B flows into the junction 530B through the first delivery pipe 510B. The compressed air generated by the second compressor 220B flows into the junction 530B through the second delivery pipe 520B. The compressed air generated by the first compressor 210B merges with the compressed air generated by the second compressor 220B at the merge unit 530B. The junction 530B corresponds to the junction 530 described with reference to FIG.

The merge portion 530B includes a manifold 531, a right check valve 532 (see FIG. 7), a left check valve 533 (see FIG. 7), and two first fixing

members

534 and 535. The manifold 531 is a substantially rectangular parallelepiped. The manifold 531 includes an upper surface 551, a lower surface 552 (see FIG. 7), and a rear surface 553. The right check valve 532 and the left check valve 533 are attached to the lower surface 552 of the manifold 531. The

first fixing members

534 and 535 are attached to the upper surface 551. Merge pipe 540B extends from rear surface 553.

As shown in FIG. 7, the first delivery pipe 510 B is connected to the right check valve 532. The compressed air flowing along the first delivery pipe 510 B flows into the manifold 531 through the right check valve 532. The right check valve 532 blocks the flow of compressed air that returns from the manifold 531 to the first delivery pipe 510B. The second delivery pipe 520B is connected to the left check valve 533. The compressed air flowing along the second delivery pipe 520 B flows into the manifold 531 through the left check valve 533. The left check valve 533 blocks the flow of compressed air returning from the manifold 531 to the second delivery pipe 520B.

Inside the manifold 531, a merged inner pipe (not shown) for joining two flows of compressed air is formed. The compressed air merged by the merged inner pipe is discharged from the manifold 531 through the merged pipe 540B.

As shown in FIG. 7, the first fixing member 534 includes a first attachment portion 561 and a second attachment portion 562. The first attachment portion 561 is connected to the first port wall 213B of the first compressor 210B. The second attachment portion 562 is connected to the upper surface 551 of the manifold 531.

The first mounting portion 561 is formed in a substantially L shape. The first attachment portion 561 includes a vertical plate portion 563 and a horizontal plate portion 564. A first adjustment structure 565 is formed in the vertical plate portion 563 as a long hole that is long in the vertical direction. The manufacturer who assembles the air compression apparatus 100B can insert an appropriate fixing tool such as a screw into the first adjustment structure 565 and connect the first attachment portion 561 to the first port wall 213B of the first compressor 210B. The manufacturer can change the height position of the manifold 531 by moving the first fixing member 534 in the vertical direction along the extending direction of the first adjustment structure 565. Since the relative position of the manifold 531 with respect to the first compressor 210B and the second compressor 220B is adjusted in the height direction, even if there is an installation error of the first compressor 210B and the second compressor 220B, The tube 540B is not overloaded.

The horizontal plate portion 564 extends from the upper end of the vertical plate portion 563 toward the front mounting wall 450. The second attachment portion 562 is bent from the horizontal plate portion 564 and extends along the upper surface 551 of the manifold 531. A first adjustment structure 566 is formed in the horizontal plate portion 564 as a long hole that is long in the horizontal direction (left and right). A manufacturer who assembles the air compression device 100 B can insert an appropriate fixing tool such as a screw into the first adjustment structure 566 and connect the second attachment portion 562 to the manifold 531. The manufacturer can change the horizontal position of the manifold 531 by moving the first fixing member 534 in the horizontal direction along the extending direction of the first adjustment structure 566. Since the relative position of the manifold 531 with respect to the first compressor 210B and the second compressor 220B is adjusted in the horizontal direction, even if there is an attachment error of the first compressor 210B and the second compressor 220B, the first delivery pipe 510B and the junction pipe. An excessively high load is not applied to 540B.

As shown in FIG. 7, the first fixing member 535 includes a first attachment portion 571 and a second attachment portion 572. The first attachment portion 571 is connected to the second port wall 223B of the second compressor 220B. The second attachment portion 572 is connected to the upper surface 551 of the manifold 531.

The first mounting portion 571 is formed in a substantially L shape. The first attachment portion 571 includes a vertical plate portion 573 and a horizontal plate portion 574. In the vertical plate portion 573, a long hole (not shown) that is long in the vertical direction is formed. A manufacturer who assembles the air compression device 100B can insert an appropriate fixing tool such as a screw into the elongated hole, and connect the first attachment portion 571 to the second port wall 223B of the second compressor 220B. The manufacturer can change the height position of the manifold 531 by moving the first fixing member 535 in the vertical direction along the extending direction of the long hole. Since the relative position of the manifold 531 with respect to the first compressor 210B and the second compressor 220B is adjusted in the height direction, even if there is an attachment error of the first compressor 210B and the second compressor 220B, The tube 540B is not overloaded.

The horizontal plate portion 574 extends from the upper end of the vertical plate portion 573 toward the front mounting wall 450. The second attachment portion 572 is bent from the horizontal plate portion 574 and extends along the upper surface 551 of the manifold 531. A first adjustment structure 576 is formed in the horizontal plate portion 574 as a long hole that is long in the horizontal direction (left and right). A manufacturer who assembles the air compression device 100 B can insert an appropriate fixing tool such as a screw into the first adjustment structure 576 and connect the second attachment portion 572 to the manifold 531. The manufacturer can change the horizontal position of the manifold 531 by moving the first fixing member 535 in the horizontal direction along the extending direction of the first adjustment structure 576. Since the relative position of the manifold 531 with respect to the first compressor 210B and the second compressor 220B is adjusted in the horizontal direction, even if there is an attachment error of the first compressor 210B and the second compressor 220B, the second delivery pipe 520B and the junction pipe. An excessively high load is not applied to 540B.

In the present embodiment, the manifold 531 is fixed by the first fixing

members

534 and 535. Alternatively, the manifold 531 may be fixed by one of the first fixing

members

534 and 535.

In the present embodiment, the

first adjustment structures

565, 566, and 576 are long holes that are long in the vertical direction and / or long holes that are long in the horizontal direction. Alternatively, the first adjustment structure may be a notch that is long in the vertical, horizontal and / or other directions. The principle of this embodiment is not limited to a specific shape of the opening area for position adjustment of the manifold 531.

The first adjustment structure may be a plurality of through holes that differ in position. The manufacturer may set an appropriate position of the manifold 531 by selecting an appropriate one from the plurality of through holes. Therefore, the principle of the present embodiment is not limited to a specific structure of the first adjustment structure.

The first delivery pipe 510B includes a proximal pipe 511 (see FIG. 4), a first elbow pipe 512 (see FIG. 4), a horizontal pipe 513, a second elbow pipe 514 (see FIG. 7), A vertical tube 515 (see FIG. 7), a first nut 516 (see FIG. 7), and a second nut 517 (see FIG. 7) are included. The proximal end pipe 511 is connected to the first port wall 213B of the first compressor 210B. The connection between the proximal tube 511 and the first port wall 213B corresponds to the first delivery port 215 described with reference to FIG. The proximal end pipe 511 extends from the first port wall 213B toward the second port wall 223B of the second compressor 220B. The first elbow pipe 512 is attached to the distal end portion of the proximal end pipe 511. The first elbow pipe 512 changes the flow direction of the compressed air generated by the first compressor 210B from the direction toward the second port wall 223B of the second compressor 220B to the direction toward the front mounting wall 450.

The first nut 516 is rotatably attached to the second elbow pipe 514. The upstream end of the horizontal pipe 513 is screwed into the first elbow pipe 512. The downstream end of the horizontal pipe 513 is screwed into the first nut 516. Therefore, the manufacturer can rotate the first nut 516 and appropriately adjust the distance between the first elbow pipe 512 and the second elbow pipe 514.

The second nut 517 is rotatably attached to the right check valve 532. The lower end of the vertical pipe 515 is screwed into the second elbow pipe 514. The upper end of the vertical pipe 515 is screwed into the second nut 517. Therefore, the manufacturer can rotate the second nut 517 and appropriately adjust the distance between the right check valve 532 and the second elbow pipe 514. In the present embodiment, the bent tube is exemplified by a set of a first elbow tube 512, a horizontal tube 513, a second elbow tube 514, and a vertical tube 515.

In the present embodiment, the second adjustment structure is exemplified by a set of a horizontal pipe 513 and a first nut 516 and a set of a vertical pipe 515 and a second nut 517. The set of the horizontal pipe 513 and the first nut 516 contributes to the adjustment of the length of the guide section in the horizontal direction of the compressed air. The set of the vertical pipe 515 and the second nut 517 contributes to the adjustment of the length of the guide section in the vertical direction of the compressed air. Alternatively, the second adjustment structure may be capable of adjusting the length of the compressed air guide section only in one of the horizontal direction and the vertical direction.

The second adjustment structure may be a bellows tube or another tube structure having a stretchable structure. The principle of this embodiment is not limited to a specific structure of the second adjustment structure.

The second delivery tube 520B has a mirror image relationship with the first delivery tube 510B. Therefore, the above description regarding the structure of the first delivery pipe 510B is incorporated into the second delivery pipe 520B.

7, the first port wall 213B of the first compressor 210B includes a substantially rectangular parallelepiped fixed base 216 that protrudes toward the second compressor 220B. The air compressor 100B includes a second fixing member 580. The second fixing member 580 is disposed on the fixing base 216.

The second fixing member 580 includes a proximal end portion 581 and a distal end portion 582. The base end portion 581 has a flat plate shape. The base end portion 581 is fixed to the fixing base 216 using an appropriate fixing tool such as a screw. The distal end portion 582 has a substantially C shape. The front end 582 extends toward the second compressor 220B while being curved upward from the base end 581 on the fixed base 216. The horizontal pipe 513 of the first delivery pipe 510B is sandwiched between the distal end portion 582 and the fixed base 216. The technique for fixing the first delivery pipe 510B by the second fastening member 580 and the fixed base 216 may be applied to the fixation of the second delivery pipe 520. The second fixing member may have other structures or other shapes that can connect the horizontal pipe 513 to the first port wall 213B of the first compressor 210B. The principle of this embodiment is not limited to a specific shape or a specific structure of the second fixing member.

FIG. 8 is a schematic cross-sectional view of the duct portion 462. FIG. 9 is a schematic perspective view of the air compressor 100B. The cooling device 610 described with reference to FIG. 3B has been removed from the air compression device 100B shown in FIG. With reference to FIGS. 3B, 4, 8, and 9, the delivery line 500B is further described.

As shown in FIG. 8, the merge pipe 540 B extends from the manifold 531 (see FIG. 4) toward the rear mounting wall 460 and passes through the duct portion 462. Duct portion 462 includes an inner duct portion 463 and an outer duct portion 464. The inner duct portion 463 protrudes inward from the holding plate 461 of the rear mounting wall 460. The outer duct portion 464 protrudes outward from the rear mounting wall 460.

As shown in FIG. 9, the outer duct portion 464 has a substantially rectangular frame structure that is long in the horizontal direction. The outer duct portion 464 includes an upper wall 465, a lower wall 466, a right wall 467, and a left wall 468. The upper wall 465 extends substantially horizontally along the rear edge 422 of the top plate 420. The lower wall 466 extends substantially horizontally below the upper wall 465. The right wall 467 is erected between the right ends of the upper wall 465 and the lower wall 466. The left wall 468 is erected between the left ends of the upper wall 465 and the lower wall 466. The merge pipe 540B bends toward the left wall 468 in the outer duct portion 464.

As shown in FIG. 3B, the merge pipe 540B bends to the left in the outer duct portion 464. The merge pipe 540B passes through the left wall 468 and appears outside the outer duct portion 464. Merge pipe 540 B is connected to cooling pipe 611 of cooling device 610 outside outer duct portion 464.

<Fourth embodiment>
Since a compressor compresses air, the calorific value of a compressor and compressed air is very large. Therefore, the exhaust heat treatment from the casing and the cooling treatment of the compressed air are very important. In the fourth embodiment, an exemplary heat treatment technique is described.

4, the air compression device 100B includes two

fan devices

710 and 720 and two cold

flow adjustment boxes

730 and 740. The front mounting wall 450 of the housing 400B includes a right fan cover 455 and a left fan cover 456. The fan device 710 is attached to the right fan cover 455. The fan device 720 is attached to the left fan cover 456. The right fan cover 455 and the left fan cover 456 protrude forward from the holding plate 451 of the front mounting wall 450. The right fan cover 455 and the left fan cover 456 can be detached from the holding plate 451. When the right fan cover 455 is removed from the holding plate 451, the fan device 710 and the cold flow adjustment box 730 are taken out from the housing 400B. When the left fan cover 456 is removed from the holding plate 451, the fan device 720 and the cold flow adjustment box 740 are removed from the housing 400B.

The fan device 710 may be an axial fan device having fan blades. The fan device 710 rotates the fan blades and generates cooling air toward the rear mounting wall 460. Since the first compressor 210B is disposed between the fan device 710 and the rear mounting wall 460, the first compressor 210B is appropriately cooled by the cooling air sent from the fan device 710.

The fan device 720 may be an axial fan device having fan blades. The fan device 720 rotates the fan blades and generates cooling air toward the rear mounting wall 460. Since the second compressor 220B is disposed between the fan device 720 and the rear mounting wall 460, the second compressor 220B is appropriately cooled by the cooling air sent out from the fan device 720.

The cold flow adjustment box 730 is disposed between the fan device 710 and the first compressor 210B. The cold flow adjustment box 730 appropriately adjusts the shape of the flow area of the cooling air from the fan device 710 toward the first compressor 210B.

The cold flow adjustment box 740 is disposed between the fan device 720 and the second compressor 220B. The cold flow adjustment box 740 appropriately adjusts the flow area shape of the cooling air from the fan device 720 to the second compressor 220B.

As shown in FIG. 3A, a mountain-shaped concave region is formed between the right fan cover 455 and the left fan cover 456. The filter cover 452 described in relation to the third embodiment is disposed in the mountain-shaped concave region.

FIG. 10A is a schematic perspective view of the cold flow adjustment box 730. FIG. 10B is a schematic rear view of the cold flow adjustment box 730. The cold flow adjustment box 730 will be described with reference to FIGS. 4 and 8 to 10B. The cold flow adjustment box 740 described with reference to FIG. 4 is structurally identical to the cold flow adjustment box 730. Therefore, the following description regarding the structure of the cold flow adjustment box 730 is incorporated in the cold flow adjustment box 740.

The cold flow adjustment box 730 includes a first adjustment plate 731, a second adjustment plate 732, and an outer peripheral plate 733. The first adjustment plate 731 faces the fan device 710. The first adjustment plate 731 includes an outer edge 734 and an inner edge 735. The outer edge 734 forms a substantially rectangular outer contour of the first adjustment plate 731. The inner edge 735 forms a substantially circular opening region. The diameter of the opening area formed by the inner edge 735 is substantially equal to the rotational diameter of the fan blades of the fan device 710. Alternatively, the diameter of the opening region is set slightly larger than the rotation diameter of the fan blades. Therefore, the cooling air generated by the fan device 710 can efficiently flow into the cold flow adjustment box 730.

The second adjustment plate 732 is erected between the first adjustment plate 731 and the first compressor 210B. The second adjustment plate 732 includes an outer edge 736 and an inner edge 737. Similar to the outer edge 734 of the first adjustment plate 731, the outer edge 736 of the second adjustment plate 732 forms a substantially rectangular outline of the second adjustment plate 732. Like many common compressors, the first compressor 210B has a substantially rectangular cross-sectional profile on a vertical virtual plane including the rotation axis of the first compressor 210B. The inner edge 737 of the second adjustment plate 732 forms a substantially rectangular opening region formed so as to match the shape and size of the cross section of the first compressor 210B. The outer peripheral plate 733 is connected to the

outer edges

734 and 736 of the first adjustment plate 731 and the second adjustment plate 732. Therefore, the cooling air flowing into the substantially circular opening region formed by the inner edge 735 of the first adjustment plate 731 flows out of the substantially rectangular opening region formed by the inner edge 737 of the second adjustment plate 732, and It will hit the compressor 210B efficiently. Therefore, the first compressor 210B is efficiently cooled.

As described above, the cooling air generated by the

fan devices

710 and 720 is sent out toward the rear mounting wall 460. Therefore, the cooling air takes heat from the first compressor 210B and the second compressor 220B and then flows toward the rear mounting wall 460. The cooling air then flows in the housing 400B until it is discharged from the duct portion 462, so that the cooling air forms a long flow path in the space between the first compressor 210B and the second compressor 220B. The compressed air in 500B can also be cooled effectively.

As described with reference to FIG. 8, since the rear mounting wall 460 includes the duct portion 462, the cooling air is intensively discharged out of the housing 400 B through the duct portion 462. Since the merge pipe 540B of the delivery pipe line 500B passes through the duct portion 462, the compressed air in the merge pipe 540B is also cooled in the duct portion 462 by the cooling air after cooling the first compressor 210B and the second compressor 220B. To be cooled.

As described in relation to the third embodiment, the compressed air flows into the cooling pipe 611 of the cooling device 610. The cooling pipe 611 forms a flow path of compressed air that goes downward while meandering. That is, the compressed air immediately after flowing into the cooling device 610 flows along the upper flow path. The compressed air then flows along the lower flow path.

As shown in FIG. 8, the upper flow path formed by the cooling pipe 611 faces the duct portion 462. Therefore, the compressed air in the upper flow path is cooled by the cooling air blown out from the duct portion 462.

As shown in FIG. 9, the air compression device 100B includes four external fan devices 750. The four outer fan devices 750 are connected in the horizontal direction below the lower wall 466 of the outer duct portion 464.

As shown in FIG. 8, the lower flow path formed by the cooling pipe 611 faces the outer fan device 750. Accordingly, the outer fan device 750 can send cooling air toward the cooling pipe 611 that forms the lower flow path. As a result, the compressed air flowing along the lower flow path is effectively cooled by the outer fan device 750.

In this embodiment, the cold

flow adjustment boxes

730 and 740 are used together with an axial fan device. Alternatively, the basin shape adjustment principle by the cold

flow adjustment boxes

730 and 740 may be applied to cooling air generated by other fan devices such as a centrifugal fan device. Even when the cooling air flows from the second adjustment plate 732 to the first adjustment plate 731, the adjustment principle described above can provide efficient cooling of the compressor.

<Fifth Embodiment>
Various devices are attached to the lower surface of the vehicle. Therefore, the area of the mounting surface for mounting the air compressor may be narrow. In the fifth embodiment, a design technique for reducing the area occupied by the air compressor in the horizontal direction will be described.

FIG. 11 is a partial assembly view of the air compressor 100B. The air compressor 100B will be described with reference to FIG.

The air compressor 100B includes a first drive unit 810 and a second drive unit 820. The first driving unit 810 and the second driving unit 820 may be general motors. The first driving unit 810 generates a driving force for driving the first compressor 210B. The second driving unit 820 generates a driving force for driving the second compressor 220B. In the present embodiment, the first driving force is exemplified by the driving force generated by the first driving unit 810. The second driving force is exemplified by the driving force generated by the second driving unit 820.

The first drive unit 810 is disposed below the first compressor 210B. The second drive unit 820 is disposed below the second compressor 220B. Since the set of the first drive unit 810 and the second drive unit 820 does not intersect the horizontal plane crossing the set of the first compressor 210B and the second compressor 220B, the designer can reduce the horizontal sectional area of the housing 400B to a small value. Can be set to

The air compressor 100B further includes a first transmission unit 910 and a second transmission unit 920. The first transmission unit 910 is formed next to the first wall 470. The second transmission part 920 is formed next to the second wall 480. The first transmission unit 910 transmits the driving force generated by the first driving unit 810 to the first compressor 210B. The second transmission unit 920 transmits the driving force generated by the second driving unit 820 to the second compressor 220B.

The first compressor 210B includes a right shaft portion 230 that protrudes in the opposite direction to the second compressor 220B. The right shaft portion 230 includes a cylindrical housing 231 and a rotating shaft 232 (see FIG. 12). The rotating shaft 232 extends in the direction opposite to the space used for the piping for suction and delivery. The rotating shaft 232 rotates within the cylindrical housing 231. The first transmission unit 910 is connected to the rotating shaft 232 supported by the cylindrical housing 231.

The second compressor 220B includes a left shaft portion 240 that protrudes in the opposite direction to the first compressor 210B. The left shaft portion 240 includes a cylindrical housing 241 and a rotating shaft (not shown). The rotating shaft rotates within the cylindrical housing 241. The second transmission unit 920 is connected to a rotating shaft supported by the cylindrical housing 241.

FIG. 12 is a schematic perspective view of the first transmission unit 910. The first transmission unit 910 will be described with reference to FIG. The second transmission unit 920 described with reference to FIG. 11 may be structurally identical to the first transmission unit 910. Therefore, the following description regarding the structure and operation of the first transmission unit 910 is incorporated in the second transmission unit 920.

The first transmission unit 910 includes an upper pulley 911, a lower pulley 912, a tension pulley 913, and an endless belt 914. The upper pulley 911 is attached to the rotation shaft 232 of the right shaft portion 230 of the first compressor 210B. A lower pulley 912 disposed below the upper pulley 911 is attached to the first drive unit 810. The endless belt 914 surrounds the upper pulley 911, the lower pulley 912, and the tension pulley 913. The tension pulley 913 pushes the endless belt 914 toward the rear mounting wall 460 between the upper pulley 911 and the lower pulley 912, and applies appropriate tension to the endless belt 914.

When the first drive unit 810 rotates, the endless belt 914 goes around the upper pulley 911, the lower pulley 912, and the tension pulley 913. As a result, the upper pulley 911 rotates. The rotating shaft 232 is rotated by the rotation of the upper pulley 911. The rotation of the rotation shaft 232 causes the compression operation of the first compressor 210B. As a result, compressed air is generated.

<Sixth Embodiment>
The housing structure described in connection with the third embodiment facilitates repair work such as filter replacement. The housing may have a structure that facilitates repair and inspection of the driving force transmission mechanism described in relation to the fifth embodiment. In the sixth embodiment, a design technique for facilitating repair and inspection of the driving force transmission mechanism will be described.

FIG. 13 is a partial assembly view of the air compressor 100B. The air compressor 100B will be described with reference to FIGS. 3A, 3B, 11 and 13.

The housing 400 B includes a support frame 490 and a support plate 481. The support frame 490 includes a first support column 491, a second support column 492, a third support column 493, a fourth support column 494, a front beam 495, and a rear beam 496. The first support column 491 extends downward from a corner (see FIG. 3A) formed by the front edge 421 and the right edge 423 of the top plate 420. The second support column 492 extends downward from a corner (see FIG. 3A) formed by the rear edge 422 and the right edge 423 of the top plate 420. The third support column 493 extends downward from a corner formed by the front edge 421 (see FIG. 3A) and the left edge 424 (see FIG. 3B) of the top plate 420. The fourth support column 494 extends downward from a corner (see FIG. 3B) formed by the rear edge 422 and the left edge 424 of the top plate 420. The front beam 495 extends substantially horizontally between the first column 491 and the third column 493. The rear beam 496 extends substantially horizontally between the second column 492 and the fourth column 494. The support plate 481 is supported by the front beam 495 and the rear beam 496. As a result, the support plate 481 lies between the top plate 420 (see FIG. 3A) and the bottom plate 430 (see FIG. 3B).

As shown in FIGS. 3A and 13, the first wall 470 is fixed to the first support column 491 and the second support column 492 with screws. Accordingly, the first wall 470 is easily separated from the support frame 490. As shown in FIG. 11, the first transmission unit 910 is formed between the first wall 470 and the first compressor 210 B disposed closer to the first wall 470 than the second wall 480. The operator can easily access the first transmission unit 910 after removing the first wall 470. Thereby, the worker can easily repair and check the first transmission unit 910.

3B and 13, the second wall 480 is fixed to the third support column 493 and the fourth support column 494 with screws. Accordingly, the second wall 480 is easily separated from the support frame 490. As shown in FIG. 11, the second transmission part 920 is formed between the second wall 480 and the second compressor 220B disposed closer to the second wall 480 than the first wall 470. The worker can easily access the second transmission unit 920 after removing the second wall 480. Thereby, the worker can easily repair and check the second transmission unit 920.

<Seventh embodiment>
The drive unit may be supported by a support member different from the support member that supports the compressor. Alternatively, the drive and compressor may be attached to a common support member. In this case, the error regarding the relative position between the drive unit and the compressor is reduced. In the seventh embodiment, a technique for reducing an error related to the relative position between the drive unit and the compressor will be described.

As shown in FIG. 13, the support plate 481 includes a right support plate 482, a left support plate 483, and a lower support plate 484. The right support plate 482 and the left support plate 483 are placed on the lower support plate 484. Thereafter, the right support plate 482 and the left support plate 483 are placed on the front beam 495 or the rear beam 496.

FIG. 14 is a schematic perspective view of the lower support plate 484. The support plate 481 is further described with reference to FIGS. 11, 13, and 14.

The lower support plate 484 includes a lower plate 485, a frame rib 486, a lattice rib 487, and four ears 488. The lower plate 485 lies below the right support plate 482 and the left support plate 483. The frame rib 486 protrudes upward from the rectangular outer peripheral edge of the lower plate 485. The lattice rib 487 is erected in a rectangular space surrounded by the frame rib 486. The right support plate 482 and the left support plate 483 are welded to the upper edges of the lattice rib 487 and the frame rib 486. Each of the four ears 488 protrudes from the frame rib 486 toward the front beam 495 or the rear beam 496. Since each of the four ears 488 is fixed to the front beam 495 or the rear beam 496, the lower support plate 484 is appropriately held by the support frame 490.

13 and 14, a plurality of through holes are formed in the right support plate 482, the left support plate 483, and the lower support plate 484 on the lower plate 485. These through holes are formed after the right support plate 482 and the left support plate 483 are welded to the lower support plate 484. Therefore, the relative relationship of the formation positions of these through holes is substantially equal to the positional relationship formed by the design drawing. The through hole formed in the right support plate 482 is used for mounting the first compressor 210B. The through hole formed in the left support plate 483 is used for mounting the second compressor 220B. The through holes formed in the lower plate 485 of the lower support plate 484 are used for mounting the first drive unit 810 and the second drive unit 820. In the present embodiment, the upper surface is exemplified by the upper surfaces of the right support plate 482 and the left support plate 483. The lower surface is exemplified by the lower surface of the lower plate 485 of the lower support plate 484.

The exemplary air compression device described in connection with the various embodiments described above primarily includes the following features.

An air compression apparatus according to an aspect of the above-described embodiment includes a first compressor including a first port wall in which a first intake port is formed, and a second compressor including a second port wall in which a second intake port is formed. And an intake pipe for guiding air to the first intake port and the second intake port. The first port wall and the second port wall are disposed to face each other. The intake pipe line is disposed between the first port wall and the second port wall.

According to the above configuration, since the intake pipe is disposed between the first port wall and the second port wall, the first compressor and the second compressor can share a pipe space for intake. . Thus, the designer can give the air compressor a small dimensional value.

With regard to the above-described configuration, the air compression device includes a first delivery air formed on the first port wall, the first compressed air generated by the first compressor compressing the air that has flowed in through the first intake port. The second compressed air received from the port and generated by the second compressor compressing the air flowing in through the second intake port is received from the second delivery port formed in the second port wall. And a delivery line.

According to the above configuration, the delivery pipe line receives the first compressed air and the second compressed air from the first delivery port formed on the first port wall and the second delivery port formed on the second port wall, respectively. The delivery path is formed between the first port wall and the second port wall. Since the first compressor and the second compressor can share the space between the first port wall and the second port wall for delivery, the designer can give the air compressor a small dimensional value. it can.

With regard to the above configuration, the delivery pipe line includes a manifold in which the first compressed air and the second compressed air merge, and a first fixing that fixes the manifold to at least one of the first compressor and the second compressor. And a member. The first fixing member may include a first adjustment structure that makes it possible to adjust a relative position of the manifold with respect to the first compressor and the second compressor.

According to the above configuration, the first fixing member includes the first adjustment structure that allows the relative position of the manifold to be adjusted with respect to the first compressor and the second compressor. Therefore, the first fixing member is caused by an assembly error between the first compressor and the second compressor. Therefore, an excessive load on the delivery route is less likely to occur.

With regard to the above configuration, the air compressor may further include a second fixing member that fixes the delivery pipe line to the first port wall at a position different from the first intake port.

According to the above configuration, since the second fixing member fixes the delivery pipe line to the first port wall at a position different from the first intake port, an excessively large load is hardly applied to the delivery pipe line.

With regard to the above-described configuration, the delivery pipe line is bent from the proximal pipe and the proximal pipe extending from the first delivery port toward the second port wall, and guides the first compressed air to the manifold. And a bent tube. The bent tube may include a second adjustment structure that adjusts a length of a guide section that extends from the proximal tube toward the manifold.

According to the above configuration, the bent pipe includes the second adjustment structure that adjusts the length of the guide section that extends from the proximal end pipe toward the manifold, and therefore, the delivery due to the assembly error between the first compressor and the second compressor. Excessive load on the path is less likely to occur.

With regard to the above configuration, the air compression device includes a first driving unit that generates a first driving force for driving the first compressor, a first transmission unit that transmits the first driving force to the first compressor, You may further provide the 2nd drive part which produces | generates the 2nd driving force for driving the said 2nd compressor, and the 2nd transmission part which transmits the said 2nd driving force to the said 1st compressor. The housing may include an outer peripheral wall including a first wall standing next to the first transmission unit and a second wall standing next to the second transmission unit.

According to the above configuration, the first transmission unit is disposed next to the first wall, and the second transmission unit is erected next to the second wall. The second transmission part can be easily repaired and / or inspected.

With regard to the above configuration, the housing includes a top plate connected to a vehicle, a bottom plate lying below the top plate, an outer peripheral wall erected between the top plate and the bottom plate, and the top plate. A support plate lying between the bottom plate and supporting the first compressor and the second compressor may be included. The support plate may include an upper surface to which the first compressor and the second compressor are attached, and a lower surface to which the first drive unit and the second drive unit are attached.

According to the above configuration, the first compressor and the second compressor are attached to the upper surface of the support plate, while the first drive unit and the second drive unit are attached to the lower surface of the support plate. The parts can be arranged side by side in the vertical direction, and the designer can set the horizontal dimension of the air compressor to a small value. Furthermore, since the compressor and the drive unit can be unitized via the support plate, the transmission unit that transmits the driving force from the drive unit to the compressor can be easily assembled.

With regard to the above configuration, the air compression device includes a fan device including fan blades rotating to generate cooling air for cooling the first compressor, and a cold flow disposed between the fan device and the first compressor. And an adjustment box. The cold flow adjustment box may include a first adjustment plate facing the fan device and a second adjustment plate facing the first compressor. A circular opening may be formed in the first adjustment plate. A rectangular opening may be formed in the second adjustment plate.

According to the above configuration, the first adjustment plate is formed with a circular opening, while the second adjustment plate is formed with a rectangular opening. Can be received. Since the flow area shape of the cooling air is appropriately adjusted by the cooling flow adjustment box, the designer can give a small dimension value to the distance between the fan device and the first compressor.

With regard to the above configuration, the intake pipe line includes an intake duct extending along the first port wall, a first end connected to the intake duct, and a second end connected to the first intake port. A pipe and a trim seal that seals between the intake duct and the first end may be included.

According to the above configuration, since the first end of the connecting pipe is connected to the intake duct via the trim seal, the relative positional error between the first compressor and the intake duct is absorbed by the trim seal. Is done. Therefore, the intake pipe line is unlikely to receive an excessively large load due to the assembly error of the first compressor and / or the intake duct.

The principle of the above-described embodiment is suitably used in various technical fields that require compressed air.

Claims

A first compressor including a first port wall formed with a first intake port;
A second compressor including a second port wall formed with a second intake port;
An intake pipe for guiding air to the first intake port and the second intake port;
The first port wall and the second port wall are disposed opposite to each other;
The air intake device is disposed between the first port wall and the second port wall.
The first compressor receives first compressed air generated by compressing the air flowing in through the first intake port from a first delivery port formed in the first port wall, and the second compressor A delivery line for receiving, from a second delivery port formed on the second port wall, second compressed air generated by compressing the air that has flowed in through the second intake port by a compressor; Item 2. The air compression device according to Item 1.
The delivery pipe includes a manifold where the first compressed air and the second compressed air merge, and a first fixing member that fixes the manifold to at least one of the first compressor and the second compressor. Including
The air compression device according to claim 2, wherein the first fixing member includes a first adjustment structure that enables adjustment of a relative position of the manifold with respect to the first compressor and the second compressor.
The air compressor according to claim 3, further comprising a second fixing member that fixes the delivery pipe line to the first port wall at a position different from the first intake port.
The delivery pipe includes a proximal pipe that extends from the first delivery port toward the second port wall, a bent pipe that is bent from the proximal pipe and guides the first compressed air to the manifold. Including,
The air compression device according to claim 3 or 4, wherein the bent tube includes a second adjustment structure that adjusts a length of a guide section that extends from the proximal tube toward the manifold.
A first driving unit that generates a first driving force for driving the first compressor;
A first transmission portion for transmitting the first driving force to the first compressor;
A second driving unit for generating a second driving force for driving the second compressor;
A second transmission portion for transmitting the second driving force to the first compressor;
A housing that forms a housing space in which the first compressor, the second compressor, the first driving unit, the first transmission unit, the second driving unit, and the second transmission unit are housed;
The said housing | casing contains the outer peripheral wall containing the 1st wall erected next to the said 1st transmission part, and the 2nd wall erected next to the said 2nd transmission part. The air compressor according to any one of the above.
The housing includes a top plate connected to a vehicle, a bottom plate lying below the top plate, an outer peripheral wall erected between the top plate and the bottom plate, and the top plate and the bottom plate. A support plate lying between and supporting the first compressor and the second compressor,
The air compressor according to claim 6, wherein the support plate includes an upper surface to which the first compressor and the second compressor are attached, and a lower surface to which the first drive unit and the second drive unit are attached.
A fan device including fan blades rotating to generate cooling air for cooling the first compressor;
A cold flow adjustment box disposed between the fan device and the first compressor, and
The cold flow adjustment box includes a first adjustment plate facing the fan device, and a second adjustment plate facing the first compressor,
A circular opening is formed in the first adjustment plate,
The air compression device according to claim 6 or 7, wherein a rectangular opening is formed in the second adjustment plate.
The intake pipe includes an intake duct extending along the first port wall, a connection pipe including a first end connected to the intake duct and a second end connected to the first intake port; The air compression device according to claim 1, further comprising: a trim seal that seals between an intake duct and the first end.