EP3306089B1 - Air compression device - Google Patents
Air compression device Download PDFInfo
- Publication number
- EP3306089B1 EP3306089B1 EP16803189.6A EP16803189A EP3306089B1 EP 3306089 B1 EP3306089 B1 EP 3306089B1 EP 16803189 A EP16803189 A EP 16803189A EP 3306089 B1 EP3306089 B1 EP 3306089B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- wall
- pipe
- port
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000006835 compression Effects 0.000 title claims description 100
- 238000007906 compression Methods 0.000 title claims description 100
- 238000001816 cooling Methods 0.000 claims description 74
- 230000005540 biological transmission Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 description 14
- 230000008439 repair process Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
Definitions
- the present invention relates to an air compression device which generates compressed air.
- An air compression device which generates compressed air is used for various uses.
- the compressed air generated by the air compression device mounted to a vehicle may be supplied to a brake device which applies braking force to the vehicle.
- Patent Literature 1 proposes an air compression device comprising a plurality of compressors.
- the air compression device comprises the plurality of compressors
- a large amount of compressed air can be generated in a short period of time.
- the compressed air can be generated continuously by other compressors even if after trouble occurs in a part of the plurality of compressors.
- the air compression device includes a plurality of compressors
- the designer needs to design the air compression device with large size. This configuration might lead to difficulty of mounting of the air compression device to other devices (for example, a vehicle).
- a compression device having a joint suction pipe is known from US 4418548 .
- Patent Literature 1 JP 3150077 U
- An object of the present invention is to provide a small-sized air compression device comprising a plurality of compressors.
- An air compression device comprises a first compressor including a first port wall in which a first suction port is formed, a second compressor including a second port wall in which a second suction port is formed and a suction pipe which guides an air to the first suction port and the second suction port.
- the first port wall and the second port wall are arranged to face each other.
- the suction pipe is arranged between the first port wall and the second port wall.
- the technique described above can make the air compression device comprising the plurality of compressors small in size.
- FIG. 1 is a schematic view of an air compression device 100 according to the first embodiment.
- the air compression device 100 will be described with reference to FIG. 1 .
- the air compression device 100 comprises a first compressor 210, a second compressor 220 and a suction pipe 300.
- the suction pipe 300 is connected to the first compressor 210 and the second compressor 220.
- a negative pressure environment is generated in the suction pipe 300 by the first compressor 210 and/or the second compressor 220.
- each of the first compressor 210 and the second compressor 220 can suck air via the suction pipe 300.
- Each of the first compressor 210 and the second compressor 220 generates compressed air by compressing the sucked air.
- the compressed air is supplied to other device which uses the compressed air from each of the first compressor 210 and the second compressor 220.
- the supply of the compressed air from each of the first compressor 210 and the second compressor 220 to other device may depend on various known piping techniques.
- the principle of the present embodiment is not limited to a specific technique for supplying the compressed air to other device.
- the compressed air may be supplied to a brake device (not shown) for generating braking force to a railroad vehicle.
- the compressed air may be supplied to other device (for example, a pneumatic apparatus (not shown) used for opening and closing a door of a vehicle) which uses the compressed air.
- a pneumatic apparatus not shown
- the principle of the present embodiment is not limited to a specific use of the compressed air.
- the first compressor 210 includes a first housing 211 and a compression mechanism 212.
- the compression mechanism 212 is housed in the first housing 211.
- the compression mechanism 212 may have a structure of a general scroll compressor.
- the compression mechanism 212 may have a structure of a general rotary compressor.
- the compression mechanism 212 may have a structure of a general swing compressor.
- the compression mechanism 212 may have a structure of a general reciprocating type compressor.
- the principle of the present embodiment is not limited to a specific structure of the compression mechanism 212.
- the first housing 211 includes a first port wall 213 facing the second compressor 220.
- a first suction port 214 is formed in the first port wall 213.
- the suction pipe 300 is connected to the first suction port 214. Accordingly, the first compressor 210 can suck air from the first suction 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 housed in the second housing 221.
- the compression mechanism 222 may have a structure of a general scroll compressor.
- the compression mechanism 222 may have a structure of a general rotary compressor.
- the compression mechanism 222 may have a structure of a general swing compressor.
- the compression mechanism 222 may have a structure of a general reciprocating type compressor.
- the principle of the present embodiment is not limited to a specific structure of the compression mechanism 222.
- the second housing 221 includes a second port wall 223 facing the first port wall 213 of the first compressor 210.
- a second suction port 224 is formed in the second port wall 223.
- the suction pipe 300 is connected to the second suction port 224. Accordingly, the second compressor 220 can suck air from the second suction port 224 and generate compressed air.
- the suction 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 is branched from the main pipe 310.
- the first branch pipe 311 is connected to the first suction port 214 of the first compressor 210.
- the second branch pipe 312 is connected to the second suction port 224 of the second compressor 220.
- the negative pressure environment is generated in the suction pipe 300 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 the air to the first suction port 214.
- the second compressor 220 is activated, the negative pressure environment is generated in the suction pipe 300 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 the air to the second suction port 224.
- the suction pipe 300 is extended between the first port wall 213 and the second port wall 223, the first compressor 210 and the second compressor 220 can share a piping space for sucking air. Accordingly, the designer can design a small space in the air compression device 100 as a piping space for sucking air.
- the suction pipe 300 is formed as a branch pipe.
- a base end portion (not shown) of the main pipe 310 of the suction pipe 300 may be communicated with an outer space of a housing (not shown) which forms a housing space in which the first compressor 210 and the second compressor 220 are housed. In this case, air outside the housing can flow directly into the main pipe 310.
- the base end portion of the main pipe 310 may be housed in the housing. In this case, 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 base end portion of the main pipe 310.
- the suction pipe 300 may include therein a filter device which removes dust from the sucked air.
- purified air is supplied to the first compressor 210 and the second compressor 220.
- other appropriate purifying technique may be used for purifying the air supplied to the first compressor 210 and the second compressor 220.
- the principle of the present embodiment is not limited to a specific purifying technique.
- a space in which a delivery pipe guiding compressed air is formed may be shared by a plurality of compressors similar to the suction pipe.
- an air compression device comprising the plurality of compressors connected to the delivery pipe formed in a common space will be described.
- FIG. 2 is a schematic view of an air compression device 100A according to the second embodiment.
- the air compression device 100A will be described with reference to FIG. 2 .
- the same reference numeral is assigned to a component having the same function as that in the first embodiment.
- the description in the first embodiment is used for describing the component to which the same reference numeral is assigned.
- the air compression device 100A comprises a suction pipe 300.
- the description of the first embodiment is used for describing the suction pipe 300.
- the air compression device 100A further comprises a first compressor 210A, a second compressor 220A, a housing 400 and a delivery pipe 500.
- the housing 400 forms a housing space 410 in which the first compressor 210A and the second compressor 220A are housed. Similar to the first embodiment, each of the first compressor 210A and the second compressor 220A receives air through the suction pipe 300. Each of the first compressor 210A and the second compressor 220A compresses the air received from the suction pipe 300, and generates compressed air. The compressed air is discharged to an outside of the housing 400 through the delivery pipe 500.
- the first compressed air is exemplarily described by the compressed air generated by the first compressor 210A.
- the second compressed air is exemplarily described by the compressed air generated by the second compressor 220A.
- the delivery pipe 500 may be connected to a cooling equipment for cooling the compressed air. As a result, the compressed air is appropriately cooled. After that, the compressed air may be dehumidified. As a result, dried compressed air is generated.
- the compressed air passed through the delivery pipe 500 may be subjected to other various treatments. The principle of the present embodiment is not limited to a specific treatment applied to the compressed air passed through the delivery pipe 500.
- the first compressor 210A includes a compression mechanism 212.
- the description of the first embodiment is used for describing the compression mechanism 212.
- the first compressor 210A further includes a first housing 211A.
- the compression mechanism 212 is housed in the first housing 211A.
- the first housing 211A includes a first port wall 213A facing the second compressor 220A. Similar to the first embodiment, a first suction port 214 is formed in the first port wall 213A. The description of the first embodiment is used for describing the first suction port 214.
- a first delivery port 215 is also formed in the first port wall 213A.
- the compressed air generated by the compression mechanism 212 is delivered to the delivery pipe 500 through the first delivery port 215.
- the second compressor 220A includes a compression mechanism 222.
- the description of the first embodiment is used for describing the compression mechanism 222.
- the second compressor 220A further includes the second housing 221A.
- the compression mechanism 222 is housed in the second housing 221A.
- the second housing 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 suction port 224 is formed in the second port wall 223A. The description of the first embodiment is used for describing the second suction port 224.
- a second delivery port 225 is also formed in the second port wall 223A.
- the compressed air generated by the compression mechanism 222 is delivered to the delivery pipe 500 through the second delivery port 225.
- the delivery pipe 500 includes a first delivery pipe 510, a second delivery pipe 520, a confluence portion 530 and a confluence pipe 540.
- the first delivery pipe 510 is connected to the confluence portion 530 and the first delivery port 215 of the first compressor 210A.
- the compressed air generated by the first compressor 210A flows from the first delivery port 215 toward the confluence portion 530 through the first delivery pipe 510.
- the second delivery pipe 520 is connected to the confluence portion 530 and the second delivery port 225 of the second compressor 220A.
- the compressed air generated by the second compressor 220A flows from the second delivery port 225 toward the confluence portion 530 through the second delivery pipe 520.
- 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, the first delivery pipe 510 and the second delivery pipe 520 are arranged between the first port wall 213A and the second port wall 223A.
- the compressed air generated by the first compressor 210A is joined with the compressed air generated by the second compressor 220A at the confluence portion 530.
- the confluence pipe 540 forms a delivery passage from the confluence portion 530 toward an outside of the housing 400.
- the compressed air flows from the confluence portion 530 toward the outside of the housing 400 through the confluence pipe 540.
- the delivery pipe 500 includes the confluence portion 530.
- the delivery pipe may be formed by a pipe which guides the compressed air generated by the first compressor 210A toward the outside of the housing 400 and a pipe which guides the compressed air generated by the second compressor 220A toward the outside of the housing 400.
- the principle of the present embodiment is not limited to a specific structure of the delivery pipe.
- a designer can design various air compression devices based on the design principle described in connection with the second embodiment.
- an exemplary air compression device will be described.
- terminologies of "upper”, “lower”, “left”, “right”, “front” and “rear” which indicate respective directions are used. These terminologies are used for clarifying the description.
- the principle of the air compression device is not limited by these terminologies.
- FIG. 3A and FIG. 3B are schematic perspective views of an air compression device 100B of the third embodiment.
- the air compression device 100B will be described with reference to FIG 2 through FIG. 3B .
- the air compression device 100B comprises a housing 400B, a cooling device 610, a dehumidifying device 620 (see FIG. 3B ), a control device 630, a right connection portion 650 and a left connection portion 660.
- the housing 400B corresponds to the housing 400 described with reference to FIG. 2 .
- the housing 400B includes a top plate 420 (see FIG. 3A ), a bottom plate 430 (see FIG. 3B ) and an outer circumferential wall 440.
- Each of the top plate 420 and the bottom plate 430 is formed in a rectangular shape.
- the top plate 420 is connected to a lower surface of a vehicle (not shown) by the right connection portion 650 and the left connection portion 660.
- the bottom plate 430 is laid below the top plate 420.
- the outer circumferential wall 440 stands between the top plate 420 and the bottom plate 430.
- the outer circumferential wall 440 includes a front mount wall 450 (see FIG. 3A ), a rear mount wall 460 (see FIG. 3B ), a first wall 470 (see FIG. 3A ), a second wall 480 (see FIG. 3B ) and a suction wall 479 (see FIG. 3A ).
- the front mount wall 450 forms a plane substantially parallel to a virtually extending plane of a side surface of the vehicle extended along a travel direction of the vehicle.
- the suction wall 479 is arranged below the front mount wall 450. The suction wall 479 allows air to pass through the suction wall 479. An air at an outside of the housing 400B flows into the housing 400B through the suction wall 479.
- the rear mount wall 460 stands at a side opposite to the front mount wall 450.
- the first wall 470 stands between a right side edge of the front mount wall 450 and a right side edge of the rear mount wall 460.
- the second wall 480 stands between a left side edge of the front mount wall 450 and a left side edge of the rear mount wall 460.
- the front mount wall 450 includes a holding plate 451 and a filter cover 452 formed in a substantially cylindrical shape.
- the filter cover 452 is fixed to the holding plate 451.
- the filter cover 452 is protruded toward a front side from the holding plate 451.
- a filter device described below, which removes dust from the sucked air, is arranged at the rear of the filter cover 452.
- the filter cover 452 includes an outer shell body 453 formed in a substantially cylindrical shape and a lever lock 454.
- An operator which checks and repairs the air compression device 100B can operate the lever lock 454 manually without using a tool such as a screwdriver and a wrench.
- the operator can fix the outer shell body 453 to the holding plate 451 by operating the lever lock 454.
- the operator can also separate the outer shell body 453 from the holding plate 451 by operating the lever lock 454.
- the operator can access a filter member (not shown) housed in the housing 400B. Accordingly, the operator can replace the filter member easily.
- the lever lock 454 may be formed by a general lock member sold on the market. Other appropriate fixing mechanism may be used in the filter cover 452 instead of the lever lock 454.
- the rear mount wall 460 includes a holding plate 461 and a duct portion 462.
- the duct portion 462 is protruded rearward from the holding plate 461. Cooling air flows in the housing 400B in order to cool various devices in the housing 400B.
- the duct portion 462 forms an opening area elongated in a horizontal direction as an outlet port of the cooling air used in the housing 400B.
- the cooling air used for cooing the inside of the housing 400B is delivered from the duct portion 462.
- the cooling device 610 includes a cooling pipe 611 extended in a meandering manner and a protection cover 612 which surrounds an extending region of the cooling pipe 611.
- the compressed air generated in the housing 400B flows into the cooling pipe 611.
- the cooling pipe 611 is arranged at an outside of the housing 400B in which a heat source (for example, a compressor (not shown)) is housed, and thereby the compressed air in the cooling pipe 611 is cooled efficiently.
- a part of the cooling pipe 611 is arranged to face the duct portion 462. Accordingly, the compressed air in the cooling pipe 611 is also cooled by the cooling air discharged from the housing 400B.
- the dehumidifying device 620 is arranged below the cooling device 610.
- the air compression device 100B does not have any device below the dehumidifying device 620, and thereby even if leakage of fluid occurs due to failure of the dehumidifying device 620, other device installed in the air compression device 100B is hardly damaged.
- control device 630 is arranged below the cooling device 610.
- the control device 630 is arranged next to the dehumidifying device 620.
- the control device 630 controls a compressor (not shown) or other device arranged in the housing 400B.
- the top plate 420 includes a front side edge 421 (see FIG. 3A ), a rear side edge 422, a right side edge 423 (see FIG. 3A ) and a left side edge 424 (see FIG. 3B ).
- the front side edge 421 is extended along a corner portion formed by the top plate 420 and the front mount wall 450.
- the rear side edge 422 is extended along a corner portion formed by the top plate 420 and the rear mount wall 460.
- the right side edge 423 is extended along a corner portion formed by the top plate 420 and the first wall 470.
- the left side edge 424 is extended along a corner portion formed by the top plate 420 and the second wall 480.
- the right connection portion 650 includes a right frame member 651 and two vibration isolating rings 652, 653.
- the right frame member 651 is formed in a substantially C-shape in a section.
- the right frame member 651 is extended along the right side edge 423 of the top plate 420.
- the vibration isolating ring 652 is arranged on the corner portion formed by the right side edge 423 and the front side edge 421.
- the vibration isolating ring 653 is arranged on the corner portion formed by the right side edge 423 and the rear side edge 422.
- Each of the vibration isolating rings 652, 653 is intervened between the right frame member 651 and the top plate 420.
- Each of the vibration isolating rings 652, 653 reduces vibration transmitted from the housing 400B to a vehicle (not shown).
- the left connection portion 660 includes a left frame member 661 and two vibration isolating rings 662, 663.
- the left frame member 661 is formed in a substantially C-shape in a section.
- the left frame member 661 is extended along the left side edge 424 of the top plate 420.
- the vibration isolating ring 662 is arranged on the corner portion formed by the left side edge 424 and the front side edge 421.
- the vibration isolating ring 663 is arranged on the corner portion formed by the left side edge 424 and the rear side edge 422.
- Each of the vibration isolating rings 662, 663 is intervened between the left frame member 661 and the top plate 420.
- Each of the vibration isolating rings 662, 663 reduces vibration transmitted from the housing 400B to the vehicle (not shown).
- FIG. 4 is a schematic plane view illustrating an inner structure of the air compression device 100B.
- the top plate 420 is removed from the air compression device 100B shown in FIG. 4 .
- the air compression device 100B will be further described with reference to FIG. 2 through FIG. 4 .
- the air compression device 100B comprises a first compressor 210B, a second compressor 220B, a suction pipe 300B and a delivery pipe 500B.
- the first compressor 210B corresponds to the first compressor 210A described with reference to FIG. 2 .
- the second compressor 220B corresponds to the second compressor 220A described with reference to FIG. 2 .
- the suction pipe 300B corresponds to the suction pipe 300 described with reference to FIG. 2 .
- the delivery pipe 500B corresponds to the delivery pipe 500 described with reference to FIG. 2 .
- FIG. 5 is a schematic cross-sectional view illustrating a structure of a base end portion of the suction pipe 300B.
- the suction pipe 300B will be described with reference to FIG. 2 , FIG. 3A , FIG. 4 and FIG. 5 .
- the suction pipe 300B includes a suction duct 310B, a filter device 320 and a trim seal 331.
- the suction duct 310B corresponds to the main pipe 310 shown in FIG. 2 .
- the filter device 320 is arranged between the filter cover 452 and the suction duct 310B.
- the trim seal 331 is formed as a rubber ring member which connects the filter device 320 to the suction duct 310B in an airtight manner.
- the suction duct 310B is formed as a hollow box member formed in a substantially rectangular parallelepiped shape.
- a negative pressure environment is generated in the suction duct 310B.
- an air outside the housing 400B is passed through the filter device 320 through the filter cover 452.
- the filter device 320 removes dust floating in the air flowing into the filter device 320.
- the air purified by the filter device 320 flows into the suction duct 310B.
- 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. 2 .
- the second port wall 223B corresponds to the second port wall 223A described with reference to FIG. 2 .
- the first port wall 213B is arranged to face the second port wall 223B.
- the suction duct 310B is extended from the filter device 320 toward the rear mount wall 460 in a space between the first port wall 213B and the second port wall 223B. Accordingly, the air compression device 100B can supply air from an outside of the housing 400B to the first compressor 210B and the second compressor 220B by using a small space.
- FIG. 6 is a schematic enlarged cross-sectional view of the suction pipe 300B around the suction duct 310B.
- the suction pipe 300B will be further described with reference to FIG. 2 , FIG. 4 , and FIG. 6 .
- the suction pipe 300B includes two joint pipes 311B, 312B and two trim seals 332, 333.
- the joint pipe 311B corresponds to the first branch pipe 311 shown in FIG. 2 .
- the joint pipe 312B corresponds to the second branch pipe 312 shown in FIG. 2 .
- the trim seal 332 is used for a connection between the joint pipe 311B and the suction duct 310B.
- the trim seal 333 is used for the connection between the joint pipe 312B and the suction duct 310B.
- the suction duct 310B includes a base end wall (front end wall) 341, a distal end wall (rear end wall) 342, a right wall 343, a left wall 344, a top wall 345 (see FIG. 4 ) and a bottom wall 346.
- the trim seal 331 is mounted to the base end wall 341. A part of the filter device 320 is inserted into the suction duct 310B through the trim seal 331.
- the distal end wall 342 stands at a side opposite to the base end wall 341.
- the distal end wall 342 forms a downstream end of the suction duct 310B.
- the right wall 343 is arranged to face the first port wall 213B of the first compressor 210B.
- the right wall 343 is extended along the first port wall 213B between the base end wall 341 and the distal end wall 342.
- the left wall 344 is arranged to face the second port wall 223B of the second compressor 220B.
- the left wall 344 is extended along the second port wall 223B between the base end wall 341 and the distal end wall 342.
- the top wall 345 closes a rectangular area surrounded by upper edges of the base end wall 341, the distal end wall 342, the right wall 343 and the left wall 344.
- the bottom wall 346 closes a rectangular area surrounded by lower edges of the base 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 first suction port 214B formed in a cylindrical shape and protruded toward the right wall 343 of the suction duct 310B.
- the first suction port 214B corresponds to the first suction port 214 shown in FIG. 2 .
- the trim seal 332 is mounted to the right wall 343 of the suction duct 310B.
- the trim seal 332 is formed as a rubber ring member.
- the trim seal 332 is arranged substantially coaxially with the first suction port 214B of the first compressor 210B.
- the joint 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 be protruded toward an inside of the suction duct 310B.
- the trim seal 332 seals an interspace between the first end 313 of the joint pipe 311B and the right wall 343 of the suction duct 310B in an airtight manner.
- the second end 314 of the joint pipe 311B is inserted into the first suction port 214B of the first compressor 210B.
- An appropriate seal member such as a seal tape is used for the connection between the second end 314 of the joint pipe 311B and the first suction port 214B of the first compressor 210B.
- the second port wall 223B of the second compressor 220B includes a second suction port 224B formed in a cylindrical shape and protruding toward the left wall 344 of the suction duct 310B.
- the second suction port 224B corresponds to the second suction port 224 shown in FIG. 2 .
- the trim seal 333 is mounted to the left wall 344 of the suction duct 310B.
- the trim seal 333 is formed as a rubber ring member.
- the trim seal 333 is arranged substantially coaxially with the second suction port 224B of the second compressor 220B.
- the connecting pipe 312B includes a first end 315 and a second end 316.
- the first end 315 is inserted into the trim seal 333. Apart of the first end 315 may protrude toward an inside of the suction duct 310B.
- the trim seal 333 is formed to seal between the first end 315 of the connecting pipe 312B and the left wall 344 of the suction duct 310B in an airtight manner.
- the second end 316 of the connecting pipe 312B is inserted into the second suction port 224B of the second compressor 220B.
- An appropriate seal member such as a seal tape is used for the connection between the second end 316 of the connecting pipe 312B and the second suction port 224B of the second compressor 220B.
- the delivery pipe 500B includes a first delivery pipe 510B, a second delivery pipe 520B, a confluence portion 530B and a confluence pipe 540B.
- the first compressor 210B receives an 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 an 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 suction duct 310B.
- the second delivery pipe 520B is connected to the second port wall 223B of the second compressor 220B above the suction duct 310B. Accordingly, as shown in FIG. 4 , each of the first delivery pipe 510B and the second delivery pipe 520B partially overlaps with the suction duct 310B.
- a connection portion 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. 2 .
- a connection portion 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. 2 .
- the first delivery pipe 510B corresponds to the first delivery pipe 510 described with reference to FIG. 2 .
- the second delivery pipe 520B corresponds to the second delivery pipe 520 described with reference to FIG 2 .
- FIG. 7 is a schematic enlarged perspective view of the delivery pipe 500B around the confluence portion 530.
- the delivery pipe 500B will be described with rcfercncc to FIG. 2 , FIG. 4 and FIG. 7 .
- the confluence portion 530B is arranged near the front mount wall 450 of the housing 400B.
- Each of the first delivery pipe 510B and the second delivery pipe 520B bends toward the front mount wall 450, and is connected to the confluence portion 530.
- the compressed air generated by the first compressor 210B flows into the confluence portion 530B through the first delivery pipe 510B.
- the compressed air generated by the second compressor 220B flows into the confluence portion 530B through the second delivery pipe 520B.
- the compressed air generated by the first compressor 210B joins the compressed air generated by the second compressor 220B at the confluence portion 530B.
- the confluence portion 530B corresponds to the confluence portion 530 described with reference to FIG. 2 .
- the confluence 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, 535.
- the manifold 531 is formed in a substantially rectangular parallelepiped shape.
- the manifold 531 includes an upper surface 551, a lower surface 552 (see FIG. 7 ) and a rear surface 553.
- Each of the right check valve 532 and the left check valve 533 is mounted to the lower surface 552 of the manifold 531.
- Each of the first fixing members 534, 535 is mounted to the upper surface 551.
- the confluence pipe 540B is extended from the rear surface 553.
- the first delivery pipe 510B is connected to the right check valve 532.
- the compressed air flowing along the first delivery pipe 510B flows into the manifold 531 through the right check valve 532.
- the right check valve 532 blocks a flow of the compressed air returned to the first delivery pipe 510B from the manifold 531.
- the second delivery pipe 520B is connected to the left check valve 533.
- the compressed air flowing along the second delivery pipe 520B flows into the manifold 531 through the left check valve 533.
- the left check valve 533 blocks a flow of the compressed air returned to the second delivery pipe 520B from the manifold 531.
- a confluence inner pipe (not shown) which joins two flows of the compressed air is formed in the manifold 531.
- the compressed air joined by the confluence inner pipe is discharged from the manifold 531 through the confluence pipe 540B.
- the first fixing member 534 includes a first mount portion 561 and a second mount portion 562.
- the first mount portion 561 is connected to the first port wall 213B of the first compressor 210B.
- the second mount portion 562 is connected to the upper surface 551 of the manifold 531.
- the first mount portion 561 is formed in a substantially L-shape.
- the first mount portion 561 includes a vertical plate portion 563 and a horizontal plate portion 564.
- a first adjusting structure 565 is formed in the vertical plate portion 563 as an elongated hole extending in a vertical direction.
- a manufacturer who assembles the air compression device 100B inserts an appropriate fixing tool such as a screw into the first adjusting structure 565, and thereby the manufacturer can connect the first mount portion 561 to the first port wall 213B of the first compressor 210B.
- the manufacturer moves the first fixing member 534 in the vertical direction along an extending direction of the first adjusting structure 565, and thereby the manufacturer can change a height position of the manifold 531.
- the horizontal plate portion 564 is extended from an upper end of the vertical plate portion 563 toward the front mount wall 450.
- the second mount portion 562 is bent from the horizontal plate portion 564, and is extended along the upper surface 551 of the manifold 531.
- a first adjusting structure 566 is formed in the horizontal plate portion 564 as an elongated hole extending in a horizontal direction (lateral direction).
- a manufacturer who assembles the air compression device 100B inserts an appropriate fixing tool such as a screw into the first adjusting structure 566, and thereby the manufacturer can connect the second mount portion 562 to the manifold 531.
- the manufacturer moves the first fixing member 534 in the horizontal direction along an extending direction of the first adjusting structure 566, and thereby the manufacturer can change a horizontal position of the manifold 531. Since a relative position of the manifold 531 against the first compressor 210B and the second compressor 220B is adjusted in the horizontal direction, even if a mounting error of the first compressor 210B and the second compressor 220B exists, an excessively large load is not applied to the first delivery pipe 510B and the confluence pipe 540B.
- the first fixing member 535 includes a first mount portion 571 and a second mount portion 572.
- the first mount portion 571 is connected to the second port wall 223B of the second compressor 220B.
- the second mount portion 572 is connected to the upper surface 551 of the manifold 531.
- the first mount portion 571 is formed in a substantially L-shape.
- the first mount portion 571 includes a vertical plate portion 573 and a horizontal plate portion 574.
- An elongated hole (not shown) extending in the vertical direction is formed in the vertical plate portion 573.
- a manufacturer who assembles the air compression device 100B inserts an appropriate fixing tool such as a screw into the elongated hole, and thereby the manufacturer can connect the first mount portion 571 to the second port wall 223B of the second compressor 220B.
- the manufacturer moves the first fixing member 535 in the vertical direction along an extending direction of the elongated hole, and thereby the manufacturer can change the height position of the manifold 531.
- the horizontal plate portion 574 is extended from an upper end of the vertical plate portion 573 toward the front mount wall 450.
- the second mount portion 572 is bent from the horizontal plate portion 574, and is extended along the upper surface 551 of the manifold 531.
- a first adjusting structure 576 is formed in the horizontal plate portion 574 as an elongated hole extending in the horizontal direction (lateral direction).
- a manufacturer who assembles the air compression device 100B inserts an appropriate fixing tool such as a screw into the first adjusting structure 576, and thereby the manufacturer can connect the second mount portion 572 to the manifold 531.
- the manufacturer moves the first fixing member 535 in the horizontal direction along an extending direction of the first adjusting structure 576, and thereby the manufacturer can change the horizontal position of the manifold 531.
- the manifold 531 is fixed by the first fixing members 534, 535.
- the manifold 531 may be fixed by one of the first fixing members 534, 535.
- each of the first adjusting structures 565, 566, 567 is formed as the elongated hole extending in the vertical direction and/or the elongated hole extending in the horizontal direction.
- the first adjusting structure may be formed as an elongated notch extending in the vertical direction, the horizontal direction and/or other direction.
- the principle of the present embodiment is not limited to a specific shape of an opening area for adjusting a position of the manifold 531.
- the first adjusting structure may be formed as a plurality of through holes arranged at different positions to each other.
- the manufacturer may select an appropriate hole from the plurality of through holes, and set an appropriate position of the manifold 531. Accordingly, the principle of the present embodiment is not limited to a specific structure of the first adjusting structure.
- the first delivery pipe 510B includes a base end 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 pipe 515 (see FIG. 7 ), a first nut 516 (see FIG. 7 ) and a second nut 517 (see FIG. 7 ).
- the base end pipe 511 is connected to the first port wall 213B of the first compressor 210B.
- a connection portion between the base end pipe 511 and the first port wall 213B corresponds to the first delivery port 215 described with reference to FIG. 2 .
- the base end pipe 511 is extended from the first port wall 213B toward the second port wall 223B of the second compressor 220B.
- the first elbow pipe 512 is mounted to a distal end portion of the base end pipe 511.
- the first elbow pipe 512 changes a flow direction of the compressed air generated by the first compressor 210B from a flow direction directed to the second port wall 223B of the second compressor 220B to a flow direction directed to the front mount wall 450.
- the first nut 516 is rotatably mounted to the second elbow pipe 514.
- An upstream end of the horizontal pipe 513 is screwed with the first elbow pipe 512.
- a downstream end of the horizontal pipe 513 is screwed with the first nut 516. Accordingly, the manufacturer rotates the first nut 516, and thereby the manufacturer can adjust a distance between the first elbow pipe 512 and the second elbow pipe 514 appropriately.
- the second nut 517 is rotatably mounted to the right check valve 532.
- a lower end of the vertical pipe 515 is screwed with the second elbow pipe 514.
- An upper end of the vertical pipe 515 is screwed with the second nut 517. Accordingly, the manufacturer rotates the second nut 517, and thereby the manufacturer can adjust a distance between the right check valve 532 and the second elbow pipe 514 appropriately.
- a bent pipe is exemplarily shown by a combination of the first elbow pipe 512, the horizontal pipe 513, the second elbow pipe 514 and the vertical pipe 515.
- a second adjusting structure is exemplarily shown by a combination of the horizontal pipe 513 and the first nut 516 and a combination of the vertical pipe 515 and the second nut 517.
- the combination of the horizontal pipe 513 and the first nut 516 contributes to an adjustment of a length of a guide section for the compressed air in the horizontal direction.
- the combination of the vertical pipe 515 and the second nut 517 contributes to an adjustment of a length of a guide section for the compressed air in the vertical direction.
- the second adjusting structure may be formed to adjust the length of the guide section for the compressed air only in one of the horizontal direction and the vertical direction.
- the second adjusting structure may be a bellows pipe or other pipe structural body having an extendable structure.
- the principle of the present embodiment is not limited to a specific structure of the second adjusting structure.
- the second delivery pipe 520B is in a mirror image relation with the first delivery pipe 510B. Accordingly, the description described above relating to the structure of the first delivery pipe 510B is used for describing the second delivery pipe 520B.
- the first port wall 213B of the first compressor 210B includes a fixing base 216 formed in a substantially rectangular parallelepiped shape and protruding toward the second compressor 220B.
- the air compression device 100B includes a second fixing member 580.
- the second fixing member 580 is arranged on the fixing base 216.
- the second fixing member 580 includes a base end portion 581 and a distal end portion 582.
- the base end portion 581 is formed in a plate shape.
- the base end portion 581 is fixed to the fixing base 216 by using an appropriate fixing tool such as a screw.
- the distal end portion 582 is formed in a substantially C-shape.
- the distal end portion 582 extends from the base end portion 581 toward the second compressor 220B while curving upward on the fixing base 216.
- the horizontal pipe 513 of the first delivery pipe 510B is intervened by the distal end portion 582 and the fixing base 216.
- a fixing technique of the first delivery pipe 510B by the second fixing member 580 and the fixing base 216 may be applied to fixing of the second delivery pipe 520.
- the second fixing member may have other structure or other shape which enable to connect the horizontal pipe 513 to the first port wall 213B of the first compressor 210B.
- the principle of the present embodiment is not limited to a specific shape or
- FIG. 8 is a schematic cross-sectional view of the duct portion 462.
- FIG. 9 is a schematic perspective view of the air compression device 100B.
- the cooling device 610 described with reference to FIG. 3B is removed from the air compression device 100B shown in FIG. 9 .
- the delivery pipe 500B will be further described with reference to FIG. 3B , FIG. 4 , FIG. 8 and FIG. 9 .
- the confluence pipe 540B is extended from the manifold 531 (see FIG. 4 ) toward the rear mount wall 460 to pass through the duct portion 462.
- the duct portion 462 includes an inner duct portion 463 and an outer duct portion 464.
- the inner duct portion 463 protrudes from the holding plate 461 of the rear mount wall 460 toward an inner side.
- the outer duct portion 464 protrudes from the rear mount wall 460 toward an outer side.
- the outer duct portion 464 has a frame structure formed in a substantially rectangular shape elongated 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 is extended substantially horizontally along the rear side edge 422 of the top plate 420.
- the lower wall 466 is extended substantially horizontally below the upper wall 465.
- the right wall 467 stands between the right side edge of the upper wall 465 and the right side edge of the lower wall 466.
- the left wall 468 stands between the left side edge of the upper wall 465 and the left side edge of the lower wall 466.
- the confluence pipe 540B is bent toward the left wall 468 in the outer duct portion 464.
- the confluence pipe 540B is bent leftward in the outer duct portion 464.
- the confluence pipe 540B penetrates the left wall 468 to appear at an outside of the outer duct portion 464.
- the confluence pipe 540B is connected to the cooling pipe 611 of the cooling device 610 at the outside of the outer duct portion 464.
- the air compression device 100B comprises two fan devices 710, 720 and two cooling air flow adjusting boxes 730, 740.
- a front mount wall 450 of a housing 400B includes a right fan cover 455 and a left fan cover 456.
- the fan device 710 is mounted to the right fan cover 455.
- the fan device 720 is mounted to the left fan cover 456.
- Each of the right fan cover 455 and the left fan cover 456 protrudes frontward from a holding plate 451 of the front mount wall 450.
- Each of the right fan cover 455 and the left fan cover 456 can be removed from the holding plate 451.
- the fan device 710 and the cooling air flow adjusting box 730 are removed from the housing 400B.
- the fan device 720 and the cooling air flow adjusting box 740 are removed from the housing 400B.
- the fan device 710 may be an axial fan device including a fan blade.
- the fan device 710 rotates the fan blade to generate cooling air toward a rear mount wall 460. Since a first compressor 210B is arranged between the fan device 710 and the rear mount wall 460, the first compressor 210B is appropriately cooled by the cooling air delivered from the fan device 710.
- the fan device 720 may be an axial fan device including a fan blade.
- the fan device 720 rotates the fan blade to generate cooling air toward the rear mount wall 460. Since a second compressor 220B is arranged between the fan device 720 and the rear mount wall 460, the second compressor 220B is appropriately cooled by the cooling air delivered from the fan device 720.
- the cooling air flow adjusting box 730 is arranged between the fan device 710 and the first compressor 210B.
- the cooling air flow adjusting box 730 appropriately adjusts a shape of a flow region of the cooling air which flows from the fan device 710 toward the first compressor 210B.
- the cooling air flow adjusting box 740 is arranged between the fan device 720 and the second compressor 220B.
- the cooling air flow adjusting box 740 appropriately adjusts a shape of a flow region of the cooling air which flows from the fan device 720 toward the second compressor 220B.
- a recess region formed in a mountain shape is formed between the right fan cover 455 and the left fan cover 456.
- the filter cover 452 described in connection with the third embodiment is arranged in the recess region formed in a mountain shape.
- FIG. 10A is a schematic perspective view of the cooling air flow adjusting box 730.
- FIG. 10B is a schematic back side view of the cooling air flow adjusting box 730.
- the cooling air flow adjusting box 730 will be described with reference to FIG. 4 and FIG. 8 through FIG. 10B .
- the cooling air flow adjusting box 740 described with reference to FIG 4 has the same structure as the cooling air flow adjusting box 730. Accordingly, the description below relating to a structure of the cooling air flow adjusting box 730 is used for describing the cooling air flow adjusting box 740.
- the cooling air flow adjusting box 730 includes a first adjusting plate 731, a second adjusting plate 732 and an outer circumferential plate 733.
- the first adjusting plate 731 is arranged to face the fan device 710.
- the first adjusting plate 731 includes an outer edge 734 and an inner edge 735.
- the outer edge 734 forms a substantially rectangular outline of the first adjusting plate 731.
- the inner edge 735 forms a substantially circular opening area.
- a diameter of the opening area formed by the inner edge 735 is substantially equal to a rotational diameter of the fan blade of the fan device 710.
- the diameter of the opening area is set to be slightly larger than the rotational diameter of the fan blade. Accordingly, the cooling air generated by the fan device 710 can flow efficiently into the cooling air flow adjusting box 730.
- the second adjusting plate 732 stands between the first adjusting plate 731 and the first compressor 210B.
- the second adjusting plate 732 includes an outer edge 736 and an inner edge 737. Similar to the outer edge 734 of the first adjusting plate 731, the outer edge 736 of the second adjusting plate 732 forms a substantially rectangular outline of the second adjusting plate 732. Similar to other general compressors, the first compressor 210B has a substantially rectangular outline in a section on a vertical virtual plane including a rotational axis of the first compressor 210B.
- the inner edge 737 of the second adjusting plate 732 forms a substantially rectangular opening area formed to be matched with the sectional shape and the size of the first compressor 210B.
- the outer circumferential plate 733 is connected to the outer edge 734 of the first adjusting plate 731 and the outer edge 736 of the second adjusting plate 732. Accordingly, the cooling air which flows into the substantially circular opening area formed by the inner edge 735 of the first adjusting plate 731 is discharged from the substantially rectangular opening area formed by the inner edge 737 of the second adjusting plate 732, and thereby the cooling air hits the first compressor 210B efficiently. Accordingly, the first compressor 210B is cooled efficiently.
- the cooling air generated by the fan devices 710, 720 is delivered toward the rear mount wall 460. Accordingly, the cooling air absorbs heat from the first compressor 210B and the second compressor 220B, and then the cooling air flows toward the rear mount wall 460. Since the cooling air flows in the housing 400B until the cooling air is discharged from the duct portion 462, the cooling air can also cool the compressed air in the delivery pipe 500B which forms a long flow passage in a space between the first compressor 210B and the second compressor 220B, effectively.
- the cooling air is discharged intensively to the outside of the housing 400B through the duct portion 462. Since the confluence pipe 540B of the delivery pipe 500B is passed through the duct portion 462, the compressed air in the confluence pipe 540B is cooled also in the duct portion 462 by the cooling air after cooling the first compressor 210B and the second compressor 220B.
- the compressed air flows into the cooling pipe 611 of the cooling device 610.
- the cooling pipe 611 forms a flow passage of the compressed air extended toward a lower side in a meandering manner. That is, the compressed air after flowing into the cooling device 610 flows along an upper side flow passage. After that, the compressed air flows along a lower side flow passage.
- the upper side flow passage formed by the cooling pipe 611 is arranged to face the duct portion 462. Accordingly, the compressed air in the upper side flow passage is cooled by the cooling air blown from the duct portion 462.
- the air compression device 100B is provided with four outer fan devices 750.
- the four outer fan devices 750 are aligned in the horizontal direction below the lower wall 466 of the outer duct portion 464.
- the lower side flow passage formed by the cooling pipe 611 is arranged to face the outer fan device 750. Accordingly, the outer fan device 750 can deliver the cooling air toward the cooling pipe 611 which forms the lower side flow passage. As a result, the compressed air which flows along the lower side flow passage is cooled by the outer fan device 750 effectively.
- each of the cooling air flow adjusting boxes 730, 740 is used together with the axial fan device.
- an adjusting principle of the shape of the flow region derived by the cooling air flow adjusting boxes 730, 740 may be applied to the cooling air generated by other fan device such as a centrifugal fan device.
- the adjusting principle described above can also contribute to the efficient cooling of the compressor.
- Various devices are mounted to a lower surface of a vehicle. Accordingly, in some cases, an area of a mount surface for mounting an air compression device is small. In a fifth embodiment, a design technique for reducing an area occupied by the air compression device in a horizontal direction will be described.
- FIG. 11 is a partially assembled view of an air compression device 100B.
- the air compression device 100B will be described with reference to FIG. 11 .
- the air compression device 100B comprises a first driving portion 810 and a second driving portion 820.
- Each of the first driving portion 810 and the second driving portion 820 may be formed as a general motor.
- the first driving portion 810 generates driving force for driving a first compressor 210B.
- the second driving portion 820 generates driving force for driving a second compressor 220B.
- first driving force is exemplarily described by the driving force generated by the first driving portion 810.
- Second driving force is exemplarily described by the driving force generated by the second driving portion 820.
- the first driving portion 810 is arranged below the first compressor 210B.
- the second driving portion 820 is arranged below the second compressor 220B. Since a group of the first driving portion 810 and the second driving portion 820 does not cross a horizontal plane crossing a group of the first compressor 210B and the second compressor 220B, the designer can set an area of the housing 400B in a horizontal section to be small.
- the air compression device 100B further comprises a first transmission portion 910 and a second transmission portion 920.
- the first transmission portion 910 is formed next to a first wall 470.
- the second transmission portion 920 is formed next to a second wall 480.
- the first transmission portion 910 transmits the driving force generated by the first driving portion 810 to the first compressor 210B.
- the second transmission portion 920 transmits the driving force generated by the second driving portion 820 to the second compressor 220B.
- the first compressor 210B includes a right shaft portion 230 protruding in a direction opposite to the second compressor 220B.
- the right shaft portion 230 includes a cylindrical housing 231 and a rotational shaft 232 (see FIG. 12 ).
- the rotational shaft 232 is extended toward a direction opposite to a space used for a pipe for the suction and the delivery.
- the rotational shaft 232 is rotated in the cylindrical housing 231.
- the first transmission portion 910 is connected to the rotational shaft 232 supported by the cylindrical housing 231.
- the second compressor 220B includes a left shaft portion 240 protruding in a direction opposite to the first compressor 2108.
- the left shaft portion 240 includes a cylindrical housing 241 and a rotational shaft (not shown). The rotational shaft is rotated in the cylindrical housing 241.
- the second transmission portion 920 is connected to the rotational shaft supported by the cylindrical housing 241.
- FIG. 12 is a schematic perspective view of the first transmission portion 910.
- the first transmission portion 910 will be described with reference to FIG. 12 .
- the second transmission portion 920 described with reference to FIG. 11 may have the same structure as that of the first transmission portion 910. Accordingly, the description below relating to the structure and the operation of the first transmission portion 910 is used for describing the second transmission portion 920.
- the first transmission portion 910 includes an upper pulley 911, a lower pulley 912, a tension pulley 913 and an endless belt 914.
- the upper pulley 911 is mounted to the rotational shaft 232 of the right shaft portion 230 of the first compressor 210B.
- the lower pulley 912 arranged below the upper pulley 911 is mounted to the first driving portion 810.
- the endless belt 914 is wound on 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 mount wall 460 at a position between the upper pulley 911 and the lower pulley 912, and thereby appropriate tensile force is applied to the endless belt 914.
- the endless belt 914 is circulated around the upper pulley 911, the lower pulley 912 and the tension pulley 913.
- the upper pulley 911 is rotated.
- the rotational shaft 232 is rotated by the rotation of the upper pulley 911.
- the rotation of the rotational shaft 232 causes compression operation of the first compressor 210B. As a result, the compressed air is generated.
- the structure of the housing described in connection with the third embodiment facilitates repairing operation such as replacing of a filter.
- the housing may have a structure which facilitates repair or check of the driving force transmission mechanism described in connection with the fifth embodiment.
- a design technique for facilitating repair or check of the driving force transmission mechanism will be described.
- FIG. 13 is a partially assembled view of an air compression device 100B.
- the air compression device 100B will be described with reference to FIG. 3A , FIG. 3B , FIG. 11 and FIG. 13 .
- the housing 400B includes a support frame 490 and a support plate 481.
- the support frame 490 includes a first column 491, a second column 492, a third column 493, a fourth column 494, a front beam 495 and a rear beam 496.
- the first column 491 is extended downward from a corner portion (see FIG. 3A ) formed by the front side edge 421 and the right side edge 423 of the top plate 420.
- the second column 492 is extended downward from a corner portion (see FIG. 3A ) formed by the rear side edge 422 and the right side edge 423 of the top plate 420.
- the third column 493 is extended downward from a corner portion formed by the front side edge 421 (see FIG. 3A ) and the left side edge 424 (see FIG.
- the fourth column 494 is extended downward from a corner portion (sec FIG. 3B ) formed by the rear side edge 422 and the left side edge 424 of the top plate 420.
- the front beam 495 is extended substantially horizontally between the first column 491 and the third column 493.
- the rear beam 496 is extended 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 is laid between the top plate 420 (see FIG. 3A ) and the bottom plate 430 (see FIG. 3B ).
- the first wall 470 is fixed to the first column 491 and the second column 492 by screws. Accordingly, the first wall 470 is detached easily from the support frame 490. As shown in FIG 11 , since the first transmission portion 910 is formed between the first wall 470 and the first compressor 210B which is arranged closer to the first wall 470 than the second wall 480, the operator can access the first transmission portion 910 easily after detaching the first wall 470. Accordingly, the operator can perform the repair or the check of the first transmission portion 910 easily.
- the second wall 480 is fixed to the third column 493 and the fourth column 494 by screws. Accordingly, the second wall 480 is detached easily from the support frame 490. As shown in FIG. 11 , since the second transmission portion 920 is formed between the second wall 480 and the second compressor 220B which is arranged closer to the second wall 480 than the first wall 470, the operator can access the second transmission portion 920 easily after detaching the second wall 480. Accordingly, the operator can perform the repair or the check of the second transmission portion 920 easily.
- a driving portion may be supported by a support member different from a support member which supports a compressor.
- the driving portion and the compressor may be mounted to a common support member. In this case, an error relating to a relative position between the driving portion and the compressor is decreased.
- a technique for decreasing an error relating to a relative position between a driving portion and a compressor will be described.
- a support plate 481 comprises a right support plate 482, a left support plate 483 and a lower support plate 484.
- Each of the right support plate 482 and the left support plate 483 is mounted on the lower support plate 484. After that, the right support plate 482 and the left support plate 483 are mounted on a front beam 495 or a rear beam 496.
- FIG. 14 is a schematic perspective view of the lower support plate 484.
- the support plate 481 will be further described with reference to FIG 11 , FIG. 13 and FIG. 14 .
- the lower support plate 484 includes a lower plate 485, a frame rib 486, a lattice rib 487 and four ear portions 488.
- the lower plate 485 is laid below the right support plate 482 and the left support plate 483.
- the frame rib 486 protrudes upward from a rectangular outer peripheral edge of the lower plate 485.
- the lattice rib 487 stands in a rectangular space surrounded by the frame rib 486.
- Each of the right support plate 482 and the left support plate 483 is welded to upper edges of the lattice rib 487 and the frame rib 486.
- Each of the four ear portions 488 protrudes from the frame rib 486 toward the front beam 495 or the rear beam 496. Since each of the four ear portions 488 is fixed to the front beam 495 or the rear beam 496, the lower support plate 484 is held appropriately by a support frame 490.
- a plurality of through holes is formed in each of the right support plate 482, the left support plate 483 and the lower plate 485 of the lower support plate 484.
- Each through hole is formed after the right support plate 482 and the left support plate 483 are welded to the lower support plate 484. Accordingly, a relative relation of positions of the through holes is substantially equal to a positional relation defined by a design drawing.
- the through hole formed in the right support plate 482 is used for mounting a first compressor 210B.
- the through hole formed in the left support plate 483 is used for mounting a second compressor 220B.
- the through hole formed in the lower plate 485 of the lower support plate 484 is used for mounting a first driving portion 810 and a second driving portion 820.
- an upper surface is exemplarily shown by upper surfaces of the right support plate 482 and the left support plate 483.
- a lower surface is exemplarily shown by a lower surface of the lower plate 485 of the lower support plate 484.
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Description
- The present invention relates to an air compression device which generates compressed air.
- An air compression device which generates compressed air is used for various uses. The compressed air generated by the air compression device mounted to a vehicle (for example, a railroad vehicle) may be supplied to a brake device which applies braking force to the vehicle.
- Patent Literature 1 proposes an air compression device comprising a plurality of compressors. In a case the air compression device comprises the plurality of compressors, a large amount of compressed air can be generated in a short period of time. In addition, the compressed air can be generated continuously by other compressors even if after trouble occurs in a part of the plurality of compressors.
- In a case the air compression device includes a plurality of compressors, it is necessary to form a pipe for guiding an air to each of the plurality of compressors. Accordingly, when a designer intends to assemble the plurality of compressors in the air compression device, the designer needs to design the air compression device with large size. This configuration might lead to difficulty of mounting of the air compression device to other devices (for example, a vehicle). A compression device having a joint suction pipe is known from
US 4418548 . - Patent Literature 1:
JP 3150077 U - An object of the present invention is to provide a small-sized air compression device comprising a plurality of compressors.
- An air compression device according to as defined by claim 1 the present invention comprises a first compressor including a first port wall in which a first suction port is formed, a second compressor including a second port wall in which a second suction port is formed and a suction pipe which guides an air to the first suction port and the second suction port. The first port wall and the second port wall are arranged to face each other. The suction pipe is arranged between the first port wall and the second port wall.
- The technique described above can make the air compression device comprising the plurality of compressors small in size.
- The objects, features and advantageous effects of the present invention will become more apparent from the following detailed description and the accompanying drawings.
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FIG. 1 is a schematic view of an air compression device according to a first embodiment. -
FIG. 2 is a schematic view of an air compression device according to a second embodiment. -
FIG. 3A is a schematic perspective view of an air compression device according to a third embodiment. -
FIG. 3B is an another perspective view of the air compression device shown inFIG. 3A . -
FIG. 4 is a schematic plane view illustrating an inner structure of the air compression device shown inFIG. 3A . -
FIG. 5 is a schematic cross-sectional view illustrating a structure of a base end portion of a suction pipe of the air compression device shown inFIG. 3A . -
FIG. 6 is a schematic enlarged cross-sectional view of the suction pipe shown inFIG. 5 . -
FIG. 7 is a schematic enlarged perspective view of a delivery pipe of the air compression device shown inFIG. 3A . -
FIG. 8 is a schematic cross-sectional view of a duct portion of the air compression device shown inFIG. 3A . -
FIG. 9 is a schematic perspective view of the air compression device shown inFIG. 3A . -
FIG. 10A is a schematic perspective view of a cooling air flow adjusting box of the air compression device shown inFIG 3A (a fourth embodiment). -
FIG. 10B is a schematic back view of the cooling air flow adjusting box shown inFIG. 10A . -
FIG. 11 is a partially assembled view of the air compression device shown inFIG. 3A (a fifth embodiment). -
FIG. 12 is a schematic perspective view of a first transmission portion of the air compression device shown inFIG. 11 . -
FIG. 13 is a partially assembled view of the air compression device shown inFIG. 3A (a sixth embodiment). -
FIG. 14 is a schematic perspective view of a lower support plate of the air compression device shown inFIG. 13 . - If compressed air is generated by a plurality of compressors, a large space is required to arrange a pipe for supplying air to these compressors. The present inventors created a design technique to house the pipe in a small space. In a first embodiment, a technique capable of supplying air to a plurality of compressors in a small space will be described.
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FIG. 1 is a schematic view of anair compression device 100 according to the first embodiment. Theair compression device 100 will be described with reference toFIG. 1 . - The
air compression device 100 comprises afirst compressor 210, asecond compressor 220 and asuction pipe 300. Thesuction pipe 300 is connected to thefirst compressor 210 and thesecond compressor 220. When thefirst compressor 210 and/or thesecond compressor 220 is activated, a negative pressure environment is generated in thesuction pipe 300 by thefirst compressor 210 and/or thesecond compressor 220. As a result, each of thefirst compressor 210 and thesecond compressor 220 can suck air via thesuction pipe 300. Each of thefirst compressor 210 and thesecond compressor 220 generates compressed air by compressing the sucked air. The compressed air is supplied to other device which uses the compressed air from each of thefirst compressor 210 and thesecond compressor 220. The supply of the compressed air from each of thefirst compressor 210 and thesecond compressor 220 to other device may depend on various known piping techniques. The principle of the present embodiment is not limited to a specific technique for supplying the compressed air to other device. - For example, after that, the compressed air may be supplied to a brake device (not shown) for generating braking force to a railroad vehicle. Alternatively, the compressed air may be supplied to other device (for example, a pneumatic apparatus (not shown) used for opening and closing a door of a vehicle) which uses the compressed air. The principle of the present embodiment is not limited to a specific use of the compressed air.
- The
first compressor 210 includes afirst housing 211 and acompression mechanism 212. Thecompression mechanism 212 is housed in thefirst housing 211. Thecompression mechanism 212 may have a structure of a general scroll compressor. Alternatively, thecompression mechanism 212 may have a structure of a general rotary compressor. Further alternatively, thecompression mechanism 212 may have a structure of a general swing compressor. Further alternatively, thecompression mechanism 212 may have a structure of a general reciprocating type compressor. The principle of the present embodiment is not limited to a specific structure of thecompression mechanism 212. - The
first housing 211 includes afirst port wall 213 facing thesecond compressor 220. Afirst suction port 214 is formed in thefirst port wall 213. Thesuction pipe 300 is connected to thefirst suction port 214. Accordingly, thefirst compressor 210 can suck air from thefirst suction port 214 and generate compressed air. - The
second compressor 220 includes asecond housing 221 and acompression mechanism 222. Thecompression mechanism 222 is housed in thesecond housing 221. Thecompression mechanism 222 may have a structure of a general scroll compressor. Alternatively, thecompression mechanism 222 may have a structure of a general rotary compressor. Further alternatively, thecompression mechanism 222 may have a structure of a general swing compressor. Further alternatively, thecompression mechanism 222 may have a structure of a general reciprocating type compressor. The principle of the present embodiment is not limited to a specific structure of thecompression mechanism 222. - The
second housing 221 includes asecond port wall 223 facing thefirst port wall 213 of thefirst compressor 210. Asecond suction port 224 is formed in thesecond port wall 223. Thesuction pipe 300 is connected to thesecond suction port 224. Accordingly, thesecond compressor 220 can suck air from thesecond suction port 224 and generate compressed air. - The
suction pipe 300 includes amain pipe 310, afirst branch pipe 311 and asecond branch pipe 312. Each of thefirst branch pipe 311 and thesecond branch pipe 312 is branched from themain pipe 310. Thefirst branch pipe 311 is connected to thefirst suction port 214 of thefirst compressor 210. Thesecond branch pipe 312 is connected to thesecond suction port 224 of thesecond compressor 220. - When the
first compressor 210 is activated, the negative pressure environment is generated in thesuction pipe 300 as described above. As a result, air flows from themain pipe 310 toward thefirst branch pipe 311. Thefirst branch pipe 311 guides the air to thefirst suction port 214. When thesecond compressor 220 is activated, the negative pressure environment is generated in thesuction pipe 300 as described above. As a result, air flows from themain pipe 310 toward thesecond branch pipe 312. Thesecond branch pipe 312 guides the air to thesecond suction port 224. - Since the
suction pipe 300 is extended between thefirst port wall 213 and thesecond port wall 223, thefirst compressor 210 and thesecond compressor 220 can share a piping space for sucking air. Accordingly, the designer can design a small space in theair compression device 100 as a piping space for sucking air. - In the present embodiment, the
suction pipe 300 is formed as a branch pipe. - A base end portion (not shown) of the
main pipe 310 of thesuction pipe 300 may be communicated with an outer space of a housing (not shown) which forms a housing space in which thefirst compressor 210 and thesecond compressor 220 are housed. In this case, air outside the housing can flow directly into themain pipe 310. Alternatively, the base end portion of themain pipe 310 may be housed in the housing. In this case, air in the housing flows into themain pipe 310. The principle of the present embodiment is not limited to a specific arrangement position of the base end portion of themain pipe 310. - The
suction pipe 300 may include therein a filter device which removes dust from the sucked air. In this case, purified air is supplied to thefirst compressor 210 and thesecond compressor 220. Alternatively, other appropriate purifying technique may be used for purifying the air supplied to thefirst compressor 210 and thesecond compressor 220. The principle of the present embodiment is not limited to a specific purifying technique. - A space in which a delivery pipe guiding compressed air is formed may be shared by a plurality of compressors similar to the suction pipe. In a second embodiment, an air compression device comprising the plurality of compressors connected to the delivery pipe formed in a common space will be described.
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FIG. 2 is a schematic view of anair compression device 100A according to the second embodiment. Theair compression device 100A will be described with reference toFIG. 2 . The same reference numeral is assigned to a component having the same function as that in the first embodiment. The description in the first embodiment is used for describing the component to which the same reference numeral is assigned. - Similar to the first embodiment, the
air compression device 100A comprises asuction pipe 300. The description of the first embodiment is used for describing thesuction pipe 300. - The
air compression device 100A further comprises afirst compressor 210A, asecond compressor 220A, ahousing 400 and adelivery pipe 500. Thehousing 400 forms ahousing space 410 in which thefirst compressor 210A and thesecond compressor 220A are housed. Similar to the first embodiment, each of thefirst compressor 210A and thesecond compressor 220A receives air through thesuction pipe 300. Each of thefirst compressor 210A and thesecond compressor 220A compresses the air received from thesuction pipe 300, and generates compressed air. The compressed air is discharged to an outside of thehousing 400 through thedelivery pipe 500. In the present embodiment, the first compressed air is exemplarily described by the compressed air generated by thefirst compressor 210A. The second compressed air is exemplarily described by the compressed air generated by thesecond compressor 220A. - The
delivery pipe 500 may be connected to a cooling equipment for cooling the compressed air. As a result, the compressed air is appropriately cooled. After that, the compressed air may be dehumidified. As a result, dried compressed air is generated. The compressed air passed through thedelivery pipe 500 may be subjected to other various treatments. The principle of the present embodiment is not limited to a specific treatment applied to the compressed air passed through thedelivery pipe 500. - Similar to the first embodiment, the
first compressor 210A includes acompression mechanism 212. The description of the first embodiment is used for describing thecompression mechanism 212. - The
first compressor 210A further includes afirst housing 211A. Thecompression mechanism 212 is housed in thefirst housing 211A. - The
first housing 211A includes afirst port wall 213A facing thesecond compressor 220A. Similar to the first embodiment, afirst suction port 214 is formed in thefirst port wall 213A. The description of the first embodiment is used for describing thefirst suction port 214. - A
first delivery port 215 is also formed in thefirst port wall 213A. The compressed air generated by thecompression mechanism 212 is delivered to thedelivery pipe 500 through thefirst delivery port 215. - Similar to the first embodiment, the
second compressor 220A includes acompression mechanism 222. The description of the first embodiment is used for describing thecompression mechanism 222. - The
second compressor 220A further includes thesecond housing 221A. Thecompression mechanism 222 is housed in thesecond housing 221A. - The
second housing 221A includes asecond port wall 223A facing thefirst port wall 213A of thefirst compressor 210A. Similar to the first embodiment, asecond suction port 224 is formed in thesecond port wall 223A. The description of the first embodiment is used for describing thesecond suction port 224. - A
second delivery port 225 is also formed in thesecond port wall 223A. The compressed air generated by thecompression mechanism 222 is delivered to thedelivery pipe 500 through thesecond delivery port 225. - The
delivery pipe 500 includes afirst delivery pipe 510, asecond delivery pipe 520, aconfluence portion 530 and aconfluence pipe 540. Thefirst delivery pipe 510 is connected to theconfluence portion 530 and thefirst delivery port 215 of thefirst compressor 210A. The compressed air generated by thefirst compressor 210A flows from thefirst delivery port 215 toward theconfluence portion 530 through thefirst delivery pipe 510. Thesecond delivery pipe 520 is connected to theconfluence portion 530 and thesecond delivery port 225 of thesecond compressor 220A. The compressed air generated by thesecond compressor 220A flows from thesecond delivery port 225 toward theconfluence portion 530 through thesecond delivery pipe 520. Since thefirst delivery pipe 510 and thesecond delivery pipe 520 are connected to thefirst delivery port 215 and thesecond delivery port 225 respectively, thefirst delivery pipe 510 and thesecond delivery pipe 520 are arranged between thefirst port wall 213A and thesecond port wall 223A. - The compressed air generated by the
first compressor 210A is joined with the compressed air generated by thesecond compressor 220A at theconfluence portion 530. Theconfluence pipe 540 forms a delivery passage from theconfluence portion 530 toward an outside of thehousing 400. The compressed air flows from theconfluence portion 530 toward the outside of thehousing 400 through theconfluence pipe 540. - In the present embodiment, the
delivery pipe 500 includes theconfluence portion 530. Alternatively, the delivery pipe may be formed by a pipe which guides the compressed air generated by thefirst compressor 210A toward the outside of thehousing 400 and a pipe which guides the compressed air generated by thesecond compressor 220A toward the outside of thehousing 400. In this case, it is not necessary to arrange a confluence element for joining the compressed air generated by thefirst compressor 210A with the compressed air generated by thesecond compressor 220A. The principle of the present embodiment is not limited to a specific structure of the delivery pipe. - A designer can design various air compression devices based on the design principle described in connection with the second embodiment. In a third embodiment, an exemplary air compression device will be described. Hereinafter, terminologies of "upper", "lower", "left", "right", "front" and "rear" which indicate respective directions are used. These terminologies are used for clarifying the description. The principle of the air compression device is not limited by these terminologies.
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FIG. 3A andFIG. 3B are schematic perspective views of anair compression device 100B of the third embodiment. Theair compression device 100B will be described with reference toFIG 2 through FIG. 3B . - The
air compression device 100B comprises ahousing 400B, acooling device 610, a dehumidifying device 620 (seeFIG. 3B ), acontrol device 630, aright connection portion 650 and aleft connection portion 660. Thehousing 400B corresponds to thehousing 400 described with reference toFIG. 2 . - The
housing 400B includes a top plate 420 (seeFIG. 3A ), a bottom plate 430 (seeFIG. 3B ) and an outercircumferential wall 440. Each of thetop plate 420 and thebottom plate 430 is formed in a rectangular shape. Thetop plate 420 is connected to a lower surface of a vehicle (not shown) by theright connection portion 650 and theleft connection portion 660. Thebottom plate 430 is laid below thetop plate 420. The outercircumferential wall 440 stands between thetop plate 420 and thebottom plate 430. - The outer
circumferential wall 440 includes a front mount wall 450 (seeFIG. 3A ), a rear mount wall 460 (seeFIG. 3B ), a first wall 470 (seeFIG. 3A ), a second wall 480 (seeFIG. 3B ) and a suction wall 479 (seeFIG. 3A ). Thefront mount wall 450 forms a plane substantially parallel to a virtually extending plane of a side surface of the vehicle extended along a travel direction of the vehicle. Thesuction wall 479 is arranged below thefront mount wall 450. Thesuction wall 479 allows air to pass through thesuction wall 479. An air at an outside of thehousing 400B flows into thehousing 400B through thesuction wall 479. Therear mount wall 460 stands at a side opposite to thefront mount wall 450. Thefirst wall 470 stands between a right side edge of thefront mount wall 450 and a right side edge of therear mount wall 460. Thesecond wall 480 stands between a left side edge of thefront mount wall 450 and a left side edge of therear mount wall 460. - As shown in
FIG. 3A , thefront mount wall 450 includes a holdingplate 451 and afilter cover 452 formed in a substantially cylindrical shape. Thefilter cover 452 is fixed to the holdingplate 451. Thefilter cover 452 is protruded toward a front side from the holdingplate 451. A filter device described below, which removes dust from the sucked air, is arranged at the rear of thefilter cover 452. - The
filter cover 452 includes anouter shell body 453 formed in a substantially cylindrical shape and alever lock 454. An operator which checks and repairs theair compression device 100B can operate thelever lock 454 manually without using a tool such as a screwdriver and a wrench. The operator can fix theouter shell body 453 to the holdingplate 451 by operating thelever lock 454. In addition, the operator can also separate theouter shell body 453 from the holdingplate 451 by operating thelever lock 454. When theouter shell body 453 is removed from the holdingplate 451, the operator can access a filter member (not shown) housed in thehousing 400B. Accordingly, the operator can replace the filter member easily. Thelever lock 454 may be formed by a general lock member sold on the market. Other appropriate fixing mechanism may be used in thefilter cover 452 instead of thelever lock 454. - As shown in
FIG. 3B , therear mount wall 460 includes a holdingplate 461 and aduct portion 462. Theduct portion 462 is protruded rearward from the holdingplate 461. Cooling air flows in thehousing 400B in order to cool various devices in thehousing 400B. Theduct portion 462 forms an opening area elongated in a horizontal direction as an outlet port of the cooling air used in thehousing 400B. The cooling air used for cooing the inside of thehousing 400B is delivered from theduct portion 462. - The
cooling device 610 includes acooling pipe 611 extended in a meandering manner and aprotection cover 612 which surrounds an extending region of thecooling pipe 611. The compressed air generated in thehousing 400B flows into thecooling pipe 611. Thecooling pipe 611 is arranged at an outside of thehousing 400B in which a heat source (for example, a compressor (not shown)) is housed, and thereby the compressed air in thecooling pipe 611 is cooled efficiently. - A part of the
cooling pipe 611 is arranged to face theduct portion 462. Accordingly, the compressed air in thecooling pipe 611 is also cooled by the cooling air discharged from thehousing 400B. - The
dehumidifying device 620 is arranged below thecooling device 610. Theair compression device 100B does not have any device below thedehumidifying device 620, and thereby even if leakage of fluid occurs due to failure of thedehumidifying device 620, other device installed in theair compression device 100B is hardly damaged. - Similar to the
dehumidifying device 620, thecontrol device 630 is arranged below thecooling device 610. Thecontrol device 630 is arranged next to thedehumidifying device 620. Thecontrol device 630 controls a compressor (not shown) or other device arranged in thehousing 400B. - The
top plate 420 includes a front side edge 421 (seeFIG. 3A ), arear side edge 422, a right side edge 423 (seeFIG. 3A ) and a left side edge 424 (seeFIG. 3B ). Thefront side edge 421 is extended along a corner portion formed by thetop plate 420 and thefront mount wall 450. Therear side edge 422 is extended along a corner portion formed by thetop plate 420 and therear mount wall 460. Theright side edge 423 is extended along a corner portion formed by thetop plate 420 and thefirst wall 470. Theleft side edge 424 is extended along a corner portion formed by thetop plate 420 and thesecond wall 480. - As shown in
FIG. 3A , theright connection portion 650 includes aright frame member 651 and twovibration isolating rings right frame member 651 is formed in a substantially C-shape in a section. Theright frame member 651 is extended along theright side edge 423 of thetop plate 420. Thevibration isolating ring 652 is arranged on the corner portion formed by theright side edge 423 and thefront side edge 421. Thevibration isolating ring 653 is arranged on the corner portion formed by theright side edge 423 and therear side edge 422. Each of thevibration isolating rings right frame member 651 and thetop plate 420. Each of thevibration isolating rings housing 400B to a vehicle (not shown). - The
left connection portion 660 includes aleft frame member 661 and twovibration isolating rings left frame member 661 is formed in a substantially C-shape in a section. Theleft frame member 661 is extended along theleft side edge 424 of thetop plate 420. Thevibration isolating ring 662 is arranged on the corner portion formed by theleft side edge 424 and thefront side edge 421. Thevibration isolating ring 663 is arranged on the corner portion formed by theleft side edge 424 and therear side edge 422. Each of thevibration isolating rings left frame member 661 and thetop plate 420. Each of thevibration isolating rings housing 400B to the vehicle (not shown). -
FIG. 4 is a schematic plane view illustrating an inner structure of theair compression device 100B. Thetop plate 420 is removed from theair compression device 100B shown inFIG. 4 . Theair compression device 100B will be further described with reference toFIG. 2 through FIG. 4 . - The
air compression device 100B comprises afirst compressor 210B, asecond compressor 220B, asuction pipe 300B and adelivery pipe 500B. Thefirst compressor 210B corresponds to thefirst compressor 210A described with reference toFIG. 2 . Thesecond compressor 220B corresponds to thesecond compressor 220A described with reference toFIG. 2 . Thesuction pipe 300B corresponds to thesuction pipe 300 described with reference toFIG. 2 . Thedelivery pipe 500B corresponds to thedelivery pipe 500 described with reference toFIG. 2 . -
FIG. 5 is a schematic cross-sectional view illustrating a structure of a base end portion of thesuction pipe 300B. Thesuction pipe 300B will be described with reference toFIG. 2 ,FIG. 3A ,FIG. 4 andFIG. 5 . - As shown in
FIG. 5 , thesuction pipe 300B includes asuction duct 310B, afilter device 320 and atrim seal 331. Thesuction duct 310B corresponds to themain pipe 310 shown inFIG. 2 . Thefilter device 320 is arranged between thefilter cover 452 and thesuction duct 310B. Thetrim seal 331 is formed as a rubber ring member which connects thefilter device 320 to thesuction duct 310B in an airtight manner. - The
suction duct 310B is formed as a hollow box member formed in a substantially rectangular parallelepiped shape. When thefirst compressor 210B and/or thesecond compressor 220B is activated, a negative pressure environment is generated in thesuction duct 310B. As a result, an air outside thehousing 400B is passed through thefilter device 320 through thefilter cover 452. Thefilter device 320 removes dust floating in the air flowing into thefilter device 320. The air purified by thefilter device 320 flows into thesuction duct 310B. - As shown in
FIG. 4 , thefirst compressor 210B includes afirst port wall 213B. Thesecond compressor 220B includes asecond port wall 223B. Thefirst port wall 213B corresponds to thefirst port wall 213A described with reference toFIG. 2 . Thesecond port wall 223B corresponds to thesecond port wall 223A described with reference toFIG. 2 . Thefirst port wall 213B is arranged to face thesecond port wall 223B. - The
suction duct 310B is extended from thefilter device 320 toward therear mount wall 460 in a space between thefirst port wall 213B and thesecond port wall 223B. Accordingly, theair compression device 100B can supply air from an outside of thehousing 400B to thefirst compressor 210B and thesecond compressor 220B by using a small space. -
FIG. 6 is a schematic enlarged cross-sectional view of thesuction pipe 300B around thesuction duct 310B. Thesuction pipe 300B will be further described with reference toFIG. 2 ,FIG. 4 , andFIG. 6 . - The
suction pipe 300B includes twojoint pipes trim seals joint pipe 311B corresponds to thefirst branch pipe 311 shown inFIG. 2 . Thejoint pipe 312B corresponds to thesecond branch pipe 312 shown inFIG. 2 . Thetrim seal 332 is used for a connection between thejoint pipe 311B and thesuction duct 310B. Thetrim seal 333 is used for the connection between thejoint pipe 312B and thesuction duct 310B. - The
suction duct 310B includes a base end wall (front end wall) 341, a distal end wall (rear end wall) 342, aright wall 343, aleft wall 344, a top wall 345 (seeFIG. 4 ) and abottom wall 346. Thetrim seal 331 is mounted to thebase end wall 341. A part of thefilter device 320 is inserted into thesuction duct 310B through thetrim seal 331. Thedistal end wall 342 stands at a side opposite to thebase end wall 341. Thedistal end wall 342 forms a downstream end of thesuction duct 310B. Theright wall 343 is arranged to face thefirst port wall 213B of thefirst compressor 210B. Theright wall 343 is extended along thefirst port wall 213B between thebase end wall 341 and thedistal end wall 342. Theleft wall 344 is arranged to face thesecond port wall 223B of thesecond compressor 220B. Theleft wall 344 is extended along thesecond port wall 223B between thebase end wall 341 and thedistal end wall 342. Thetop wall 345 closes a rectangular area surrounded by upper edges of thebase end wall 341, thedistal end wall 342, theright wall 343 and theleft wall 344. Thebottom wall 346 closes a rectangular area surrounded by lower edges of thebase end wall 341, thedistal end wall 342, theright wall 343 and theleft wall 344. - The
first port wall 213B of thefirst compressor 210B includes afirst suction port 214B formed in a cylindrical shape and protruded toward theright wall 343 of thesuction duct 310B. Thefirst suction port 214B corresponds to thefirst suction port 214 shown inFIG. 2 . - The
trim seal 332 is mounted to theright wall 343 of thesuction duct 310B. Thetrim seal 332 is formed as a rubber ring member. Thetrim seal 332 is arranged substantially coaxially with thefirst suction port 214B of thefirst compressor 210B. - The
joint pipe 311B includes afirst end 313 and asecond end 314. Thefirst end 313 is inserted into thetrim seal 332. A part of thefirst end 313 may be protruded toward an inside of thesuction duct 310B. Thetrim seal 332 seals an interspace between thefirst end 313 of thejoint pipe 311B and theright wall 343 of thesuction duct 310B in an airtight manner. Thesecond end 314 of thejoint pipe 311B is inserted into thefirst suction port 214B of thefirst compressor 210B. An appropriate seal member such as a seal tape is used for the connection between thesecond end 314 of thejoint pipe 311B and thefirst suction port 214B of thefirst compressor 210B. - The
second port wall 223B of thesecond compressor 220B includes asecond suction port 224B formed in a cylindrical shape and protruding toward theleft wall 344 of thesuction duct 310B. Thesecond suction port 224B corresponds to thesecond suction port 224 shown inFIG. 2 . - The
trim seal 333 is mounted to theleft wall 344 of thesuction duct 310B. Thetrim seal 333 is formed as a rubber ring member. Thetrim seal 333 is arranged substantially coaxially with thesecond suction port 224B of thesecond compressor 220B. - The connecting
pipe 312B includes afirst end 315 and asecond end 316. Thefirst end 315 is inserted into thetrim seal 333. Apart of thefirst end 315 may protrude toward an inside of thesuction duct 310B. Thetrim seal 333 is formed to seal between thefirst end 315 of the connectingpipe 312B and theleft wall 344 of thesuction duct 310B in an airtight manner. Thesecond end 316 of the connectingpipe 312B is inserted into thesecond suction port 224B of thesecond compressor 220B. An appropriate seal member such as a seal tape is used for the connection between thesecond end 316 of the connectingpipe 312B and thesecond suction port 224B of thesecond compressor 220B. - As shown in
FIG. 4 , thedelivery pipe 500B includes afirst delivery pipe 510B, asecond delivery pipe 520B, aconfluence portion 530B and aconfluence pipe 540B. Thefirst compressor 210B receives an air through the connectingpipe 311B (seeFIG. 6 ). Thefirst compressor 210B compresses the air supplied through the connectingpipe 311B and generates compressed air. Thesecond compressor 220B receives an air through the connectingpipe 312B (seeFIG. 6 ). Thesecond compressor 220B compresses the air supplied through the connectingpipe 312B and generates compressed air. - The
first delivery pipe 510B is connected to thefirst port wall 213B of thefirst compressor 210B above thesuction duct 310B. Thesecond delivery pipe 520B is connected to thesecond port wall 223B of thesecond compressor 220B above thesuction duct 310B. Accordingly, as shown inFIG. 4 , each of thefirst delivery pipe 510B and thesecond delivery pipe 520B partially overlaps with thesuction duct 310B. A connection portion between thefirst delivery pipe 510B and thefirst port wall 213B of thefirst compressor 210B corresponds to thefirst delivery port 215 described with reference toFIG. 2 . A connection portion between thesecond delivery pipe 520B and thesecond port wall 223B of thesecond compressor 220B corresponds to thesecond delivery port 225 described with reference toFIG. 2 . Thefirst delivery pipe 510B corresponds to thefirst delivery pipe 510 described with reference toFIG. 2 . Thesecond delivery pipe 520B corresponds to thesecond delivery pipe 520 described with reference toFIG 2 . -
FIG. 7 is a schematic enlarged perspective view of thedelivery pipe 500B around theconfluence portion 530. Thedelivery pipe 500B will be described with rcfercncc toFIG. 2 ,FIG. 4 andFIG. 7 . - As shown in
FIG. 4 , theconfluence portion 530B is arranged near thefront mount wall 450 of thehousing 400B. Each of thefirst delivery pipe 510B and thesecond delivery pipe 520B bends toward thefront mount wall 450, and is connected to theconfluence portion 530. The compressed air generated by thefirst compressor 210B flows into theconfluence portion 530B through thefirst delivery pipe 510B. The compressed air generated by thesecond compressor 220B flows into theconfluence portion 530B through thesecond delivery pipe 520B. The compressed air generated by thefirst compressor 210B joins the compressed air generated by thesecond compressor 220B at theconfluence portion 530B. Theconfluence portion 530B corresponds to theconfluence portion 530 described with reference toFIG. 2 . - The
confluence portion 530B includes a manifold 531, a right check valve 532 (seeFIG. 7 ), a left check valve 533 (seeFIG. 7 ) and two first fixingmembers upper surface 551, a lower surface 552 (seeFIG. 7 ) and arear surface 553. Each of theright check valve 532 and theleft check valve 533 is mounted to thelower surface 552 of themanifold 531. Each of the first fixingmembers upper surface 551. Theconfluence pipe 540B is extended from therear surface 553. - As shown in
FIG. 7 , thefirst delivery pipe 510B is connected to theright check valve 532. The compressed air flowing along thefirst delivery pipe 510B flows into the manifold 531 through theright check valve 532. Theright check valve 532 blocks a flow of the compressed air returned to thefirst delivery pipe 510B from themanifold 531. Thesecond delivery pipe 520B is connected to theleft check valve 533. The compressed air flowing along thesecond delivery pipe 520B flows into the manifold 531 through theleft check valve 533. Theleft check valve 533 blocks a flow of the compressed air returned to thesecond delivery pipe 520B from themanifold 531. - A confluence inner pipe (not shown) which joins two flows of the compressed air is formed in the
manifold 531. The compressed air joined by the confluence inner pipe is discharged from the manifold 531 through theconfluence pipe 540B. - As shown in
FIG. 7 , the first fixingmember 534 includes afirst mount portion 561 and asecond mount portion 562. Thefirst mount portion 561 is connected to thefirst port wall 213B of thefirst compressor 210B. Thesecond mount portion 562 is connected to theupper surface 551 of themanifold 531. - The
first mount portion 561 is formed in a substantially L-shape. Thefirst mount portion 561 includes avertical plate portion 563 and ahorizontal plate portion 564. Afirst adjusting structure 565 is formed in thevertical plate portion 563 as an elongated hole extending in a vertical direction. A manufacturer who assembles theair compression device 100B inserts an appropriate fixing tool such as a screw into thefirst adjusting structure 565, and thereby the manufacturer can connect thefirst mount portion 561 to thefirst port wall 213B of thefirst compressor 210B. The manufacturer moves the first fixingmember 534 in the vertical direction along an extending direction of thefirst adjusting structure 565, and thereby the manufacturer can change a height position of themanifold 531. Since a relative position of the manifold 531 against thefirst compressor 210B and thesecond compressor 220B is adjusted in a height direction, even if a mounting error of thefirst compressor 210B and thesecond compressor 220B exists, an excessively large load is not applied to thefirst delivery pipe 510B and theconfluence pipe 540B. - The
horizontal plate portion 564 is extended from an upper end of thevertical plate portion 563 toward thefront mount wall 450. Thesecond mount portion 562 is bent from thehorizontal plate portion 564, and is extended along theupper surface 551 of themanifold 531. Afirst adjusting structure 566 is formed in thehorizontal plate portion 564 as an elongated hole extending in a horizontal direction (lateral direction). A manufacturer who assembles theair compression device 100B inserts an appropriate fixing tool such as a screw into thefirst adjusting structure 566, and thereby the manufacturer can connect thesecond mount portion 562 to themanifold 531. The manufacturer moves the first fixingmember 534 in the horizontal direction along an extending direction of thefirst adjusting structure 566, and thereby the manufacturer can change a horizontal position of themanifold 531. Since a relative position of the manifold 531 against thefirst compressor 210B and thesecond compressor 220B is adjusted in the horizontal direction, even if a mounting error of thefirst compressor 210B and thesecond compressor 220B exists, an excessively large load is not applied to thefirst delivery pipe 510B and theconfluence pipe 540B. - As shown in
FIG. 7 , the first fixingmember 535 includes a first mount portion 571 and asecond mount portion 572. The first mount portion 571 is connected to thesecond port wall 223B of thesecond compressor 220B. Thesecond mount portion 572 is connected to theupper surface 551 of themanifold 531. - The first mount portion 571 is formed in a substantially L-shape. The first mount portion 571 includes a vertical plate portion 573 and a
horizontal plate portion 574. An elongated hole (not shown) extending in the vertical direction is formed in the vertical plate portion 573. A manufacturer who assembles theair compression device 100B inserts an appropriate fixing tool such as a screw into the elongated hole, and thereby the manufacturer can connect the first mount portion 571 to thesecond port wall 223B of thesecond compressor 220B. The manufacturer moves the first fixingmember 535 in the vertical direction along an extending direction of the elongated hole, and thereby the manufacturer can change the height position of themanifold 531. Since the relative position of the manifold 531 against thefirst compressor 210B and thesecond compressor 220B is adjusted in the height direction, even if a mounting error of thefirst compressor 210B and thesecond compressor 220B exists, an excessively large load is not applied to thesecond delivery pipe 520B and theconfluence pipe 540B. - The
horizontal plate portion 574 is extended from an upper end of the vertical plate portion 573 toward thefront mount wall 450. Thesecond mount portion 572 is bent from thehorizontal plate portion 574, and is extended along theupper surface 551 of themanifold 531. Afirst adjusting structure 576 is formed in thehorizontal plate portion 574 as an elongated hole extending in the horizontal direction (lateral direction). A manufacturer who assembles theair compression device 100B inserts an appropriate fixing tool such as a screw into thefirst adjusting structure 576, and thereby the manufacturer can connect thesecond mount portion 572 to themanifold 531. The manufacturer moves the first fixingmember 535 in the horizontal direction along an extending direction of thefirst adjusting structure 576, and thereby the manufacturer can change the horizontal position of themanifold 531. Since the relative position of the manifold 531 against thefirst compressor 210B and thesecond compressor 220B is adjusted in the horizontal direction, even if a mounting error of thefirst compressor 210B and thesecond compressor 220B exists, an excessively large load is not applied to thesecond delivery pipe 520B and theconfluence pipe 540B. - In the present embodiment, the manifold 531 is fixed by the first fixing
members members - In the present embodiment, each of the
first adjusting structures manifold 531. - The first adjusting structure may be formed as a plurality of through holes arranged at different positions to each other. The manufacturer may select an appropriate hole from the plurality of through holes, and set an appropriate position of the
manifold 531. Accordingly, the principle of the present embodiment is not limited to a specific structure of the first adjusting structure. - The
first delivery pipe 510B includes a base end pipe 511 (seeFIG. 4 ), a first elbow pipe 512 (seeFIG. 4 ), ahorizontal pipe 513, a second elbow pipe 514 (seeFIG. 7 ), a vertical pipe 515 (seeFIG. 7 ), a first nut 516 (seeFIG. 7 ) and a second nut 517 (seeFIG. 7 ). Thebase end pipe 511 is connected to thefirst port wall 213B of thefirst compressor 210B. A connection portion between thebase end pipe 511 and thefirst port wall 213B corresponds to thefirst delivery port 215 described with reference toFIG. 2 . Thebase end pipe 511 is extended from thefirst port wall 213B toward thesecond port wall 223B of thesecond compressor 220B. Thefirst elbow pipe 512 is mounted to a distal end portion of thebase end pipe 511. Thefirst elbow pipe 512 changes a flow direction of the compressed air generated by thefirst compressor 210B from a flow direction directed to thesecond port wall 223B of thesecond compressor 220B to a flow direction directed to thefront mount wall 450. - The
first nut 516 is rotatably mounted to thesecond elbow pipe 514. An upstream end of thehorizontal pipe 513 is screwed with thefirst elbow pipe 512. A downstream end of thehorizontal pipe 513 is screwed with thefirst nut 516. Accordingly, the manufacturer rotates thefirst nut 516, and thereby the manufacturer can adjust a distance between thefirst elbow pipe 512 and thesecond elbow pipe 514 appropriately. - The
second nut 517 is rotatably mounted to theright check valve 532. A lower end of thevertical pipe 515 is screwed with thesecond elbow pipe 514. An upper end of thevertical pipe 515 is screwed with thesecond nut 517. Accordingly, the manufacturer rotates thesecond nut 517, and thereby the manufacturer can adjust a distance between theright check valve 532 and thesecond elbow pipe 514 appropriately. In the present embodiment, a bent pipe is exemplarily shown by a combination of thefirst elbow pipe 512, thehorizontal pipe 513, thesecond elbow pipe 514 and thevertical pipe 515. - In the present embodiment, a second adjusting structure is exemplarily shown by a combination of the
horizontal pipe 513 and thefirst nut 516 and a combination of thevertical pipe 515 and thesecond nut 517. The combination of thehorizontal pipe 513 and thefirst nut 516 contributes to an adjustment of a length of a guide section for the compressed air in the horizontal direction. The combination of thevertical pipe 515 and thesecond nut 517 contributes to an adjustment of a length of a guide section for the compressed air in the vertical direction. Alternatively, the second adjusting structure may be formed to adjust the length of the guide section for the compressed air only in one of the horizontal direction and the vertical direction. - The second adjusting structure may be a bellows pipe or other pipe structural body having an extendable structure. The principle of the present embodiment is not limited to a specific structure of the second adjusting structure.
- The
second delivery pipe 520B is in a mirror image relation with thefirst delivery pipe 510B. Accordingly, the description described above relating to the structure of thefirst delivery pipe 510B is used for describing thesecond delivery pipe 520B. - As shown in
FIG. 7 , thefirst port wall 213B of thefirst compressor 210B includes a fixingbase 216 formed in a substantially rectangular parallelepiped shape and protruding toward thesecond compressor 220B. Theair compression device 100B includes asecond fixing member 580. Thesecond fixing member 580 is arranged on the fixingbase 216. - The
second fixing member 580 includes abase end portion 581 and adistal end portion 582. Thebase end portion 581 is formed in a plate shape. Thebase end portion 581 is fixed to the fixingbase 216 by using an appropriate fixing tool such as a screw. Thedistal end portion 582 is formed in a substantially C-shape. Thedistal end portion 582 extends from thebase end portion 581 toward thesecond compressor 220B while curving upward on the fixingbase 216. Thehorizontal pipe 513 of thefirst delivery pipe 510B is intervened by thedistal end portion 582 and the fixingbase 216. A fixing technique of thefirst delivery pipe 510B by the second fixingmember 580 and the fixingbase 216 may be applied to fixing of thesecond delivery pipe 520. The second fixing member may have other structure or other shape which enable to connect thehorizontal pipe 513 to thefirst port wall 213B of thefirst compressor 210B. The principle of the present 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 theduct portion 462.FIG. 9 is a schematic perspective view of theair compression device 100B. Thecooling device 610 described with reference toFIG. 3B is removed from theair compression device 100B shown inFIG. 9 . Thedelivery pipe 500B will be further described with reference toFIG. 3B ,FIG. 4 ,FIG. 8 andFIG. 9 . - As shown in
FIG. 8 , theconfluence pipe 540B is extended from the manifold 531 (seeFIG. 4 ) toward therear mount wall 460 to pass through theduct portion 462. Theduct portion 462 includes aninner duct portion 463 and anouter duct portion 464. Theinner duct portion 463 protrudes from the holdingplate 461 of therear mount wall 460 toward an inner side. Theouter duct portion 464 protrudes from therear mount wall 460 toward an outer side. - As shown in
FIG. 9 , theouter duct portion 464 has a frame structure formed in a substantially rectangular shape elongated in the horizontal direction. Theouter duct portion 464 includes anupper wall 465, alower wall 466, aright wall 467 and aleft wall 468. Theupper wall 465 is extended substantially horizontally along therear side edge 422 of thetop plate 420. Thelower wall 466 is extended substantially horizontally below theupper wall 465. Theright wall 467 stands between the right side edge of theupper wall 465 and the right side edge of thelower wall 466. Theleft wall 468 stands between the left side edge of theupper wall 465 and the left side edge of thelower wall 466. Theconfluence pipe 540B is bent toward theleft wall 468 in theouter duct portion 464. - As shown in
FIG. 3B , theconfluence pipe 540B is bent leftward in theouter duct portion 464. Theconfluence pipe 540B penetrates theleft wall 468 to appear at an outside of theouter duct portion 464. Theconfluence pipe 540B is connected to thecooling pipe 611 of thecooling device 610 at the outside of theouter duct portion 464. - Since a compressor compresses an air, an amount of heat generation of the compressor and the compressed air is extremely large. Accordingly, a heat exhausting process from a housing and a cooling process of the compressed air are extremely important. In a fourth embodiment, an exemplary heat processing technique will be described.
- As shown in
FIG. 4 , theair compression device 100B comprises twofan devices flow adjusting boxes front mount wall 450 of ahousing 400B includes aright fan cover 455 and aleft fan cover 456. Thefan device 710 is mounted to theright fan cover 455. Thefan device 720 is mounted to theleft fan cover 456. Each of theright fan cover 455 and theleft fan cover 456 protrudes frontward from a holdingplate 451 of thefront mount wall 450. Each of theright fan cover 455 and theleft fan cover 456 can be removed from the holdingplate 451. When theright fan cover 455 is removed from the holdingplate 451, thefan device 710 and the cooling airflow adjusting box 730 are removed from thehousing 400B. When theleft fan cover 456 is removed from the holdingplate 451, thefan device 720 and the cooling airflow adjusting box 740 are removed from thehousing 400B. - The
fan device 710 may be an axial fan device including a fan blade. Thefan device 710 rotates the fan blade to generate cooling air toward arear mount wall 460. Since afirst compressor 210B is arranged between thefan device 710 and therear mount wall 460, thefirst compressor 210B is appropriately cooled by the cooling air delivered from thefan device 710. - The
fan device 720 may be an axial fan device including a fan blade. Thefan device 720 rotates the fan blade to generate cooling air toward therear mount wall 460. Since asecond compressor 220B is arranged between thefan device 720 and therear mount wall 460, thesecond compressor 220B is appropriately cooled by the cooling air delivered from thefan device 720. - The cooling air
flow adjusting box 730 is arranged between thefan device 710 and thefirst compressor 210B. The cooling airflow adjusting box 730 appropriately adjusts a shape of a flow region of the cooling air which flows from thefan device 710 toward thefirst compressor 210B. - The cooling air
flow adjusting box 740 is arranged between thefan device 720 and thesecond compressor 220B. The cooling airflow adjusting box 740 appropriately adjusts a shape of a flow region of the cooling air which flows from thefan device 720 toward thesecond compressor 220B. - As shown in
FIG. 3A , a recess region formed in a mountain shape is formed between theright fan cover 455 and theleft fan cover 456. Thefilter cover 452 described in connection with the third embodiment is arranged in the recess region formed in a mountain shape. -
FIG. 10A is a schematic perspective view of the cooling airflow adjusting box 730.FIG. 10B is a schematic back side view of the cooling airflow adjusting box 730. The cooling airflow adjusting box 730 will be described with reference toFIG. 4 andFIG. 8 throughFIG. 10B . The cooling airflow adjusting box 740 described with reference toFIG 4 has the same structure as the cooling airflow adjusting box 730. Accordingly, the description below relating to a structure of the cooling airflow adjusting box 730 is used for describing the cooling airflow adjusting box 740. - The cooling air
flow adjusting box 730 includes afirst adjusting plate 731, asecond adjusting plate 732 and an outercircumferential plate 733. Thefirst adjusting plate 731 is arranged to face thefan device 710. Thefirst adjusting plate 731 includes anouter edge 734 and aninner edge 735. Theouter edge 734 forms a substantially rectangular outline of thefirst adjusting plate 731. Theinner edge 735 forms a substantially circular opening area. A diameter of the opening area formed by theinner edge 735 is substantially equal to a rotational diameter of the fan blade of thefan device 710. Or alternatively, the diameter of the opening area is set to be slightly larger than the rotational diameter of the fan blade. Accordingly, the cooling air generated by thefan device 710 can flow efficiently into the cooling airflow adjusting box 730. - The
second adjusting plate 732 stands between thefirst adjusting plate 731 and thefirst compressor 210B. Thesecond adjusting plate 732 includes anouter edge 736 and aninner edge 737. Similar to theouter edge 734 of thefirst adjusting plate 731, theouter edge 736 of thesecond adjusting plate 732 forms a substantially rectangular outline of thesecond adjusting plate 732. Similar to other general compressors, thefirst compressor 210B has a substantially rectangular outline in a section on a vertical virtual plane including a rotational axis of thefirst compressor 210B. Theinner edge 737 of thesecond adjusting plate 732 forms a substantially rectangular opening area formed to be matched with the sectional shape and the size of thefirst compressor 210B. The outercircumferential plate 733 is connected to theouter edge 734 of thefirst adjusting plate 731 and theouter edge 736 of thesecond adjusting plate 732. Accordingly, the cooling air which flows into the substantially circular opening area formed by theinner edge 735 of thefirst adjusting plate 731 is discharged from the substantially rectangular opening area formed by theinner edge 737 of thesecond adjusting plate 732, and thereby the cooling air hits thefirst compressor 210B efficiently. Accordingly, thefirst compressor 210B is cooled efficiently. - As described above, the cooling air generated by the
fan devices rear mount wall 460. Accordingly, the cooling air absorbs heat from thefirst compressor 210B and thesecond compressor 220B, and then the cooling air flows toward therear mount wall 460. Since the cooling air flows in thehousing 400B until the cooling air is discharged from theduct portion 462, the cooling air can also cool the compressed air in thedelivery pipe 500B which forms a long flow passage in a space between thefirst compressor 210B and thesecond compressor 220B, effectively. - As described with reference to
FIG. 8 , since therear mount wall 460 includes theduct portion 462, the cooling air is discharged intensively to the outside of thehousing 400B through theduct portion 462. Since theconfluence pipe 540B of thedelivery pipe 500B is passed through theduct portion 462, the compressed air in theconfluence pipe 540B is cooled also in theduct portion 462 by the cooling air after cooling thefirst compressor 210B and thesecond compressor 220B. - As described in connection with the third embodiment, the compressed air flows into the
cooling pipe 611 of thecooling device 610. Thecooling pipe 611 forms a flow passage of the compressed air extended toward a lower side in a meandering manner. That is, the compressed air after flowing into thecooling device 610 flows along an upper side flow passage. After that, the compressed air flows along a lower side flow passage. - As shown in
FIG. 8 , the upper side flow passage formed by the coolingpipe 611 is arranged to face theduct portion 462. Accordingly, the compressed air in the upper side flow passage is cooled by the cooling air blown from theduct portion 462. - As shown in
FIG. 9 , theair compression device 100B is provided with fourouter fan devices 750. The fourouter fan devices 750 are aligned in the horizontal direction below thelower wall 466 of theouter duct portion 464. - As shown in
FIG. 8 , the lower side flow passage formed by the coolingpipe 611 is arranged to face theouter fan device 750. Accordingly, theouter fan device 750 can deliver the cooling air toward thecooling pipe 611 which forms the lower side flow passage. As a result, the compressed air which flows along the lower side flow passage is cooled by theouter fan device 750 effectively. - In the present embodiment, each of the cooling air
flow adjusting boxes flow adjusting boxes second adjusting plate 732 to thefirst adjusting plate 731, the adjusting principle described above can also contribute to the efficient cooling of the compressor. - Various devices are mounted to a lower surface of a vehicle. Accordingly, in some cases, an area of a mount surface for mounting an air compression device is small. In a fifth embodiment, a design technique for reducing an area occupied by the air compression device in a horizontal direction will be described.
-
FIG. 11 is a partially assembled view of anair compression device 100B. Theair compression device 100B will be described with reference toFIG. 11 . - The
air compression device 100B comprises afirst driving portion 810 and asecond driving portion 820. Each of thefirst driving portion 810 and thesecond driving portion 820 may be formed as a general motor. Thefirst driving portion 810 generates driving force for driving afirst compressor 210B. Thesecond driving portion 820 generates driving force for driving asecond compressor 220B. In the present embodiment, first driving force is exemplarily described by the driving force generated by thefirst driving portion 810. Second driving force is exemplarily described by the driving force generated by thesecond driving portion 820. - The
first driving portion 810 is arranged below thefirst compressor 210B. Thesecond driving portion 820 is arranged below thesecond compressor 220B. Since a group of thefirst driving portion 810 and thesecond driving portion 820 does not cross a horizontal plane crossing a group of thefirst compressor 210B and thesecond compressor 220B, the designer can set an area of thehousing 400B in a horizontal section to be small. - The
air compression device 100B further comprises afirst transmission portion 910 and asecond transmission portion 920. Thefirst transmission portion 910 is formed next to afirst wall 470. Thesecond transmission portion 920 is formed next to asecond wall 480. Thefirst transmission portion 910 transmits the driving force generated by thefirst driving portion 810 to thefirst compressor 210B. Thesecond transmission portion 920 transmits the driving force generated by thesecond driving portion 820 to thesecond compressor 220B. - The
first compressor 210B includes aright shaft portion 230 protruding in a direction opposite to thesecond compressor 220B. Theright shaft portion 230 includes acylindrical housing 231 and a rotational shaft 232 (seeFIG. 12 ). Therotational shaft 232 is extended toward a direction opposite to a space used for a pipe for the suction and the delivery. Therotational shaft 232 is rotated in thecylindrical housing 231. Thefirst transmission portion 910 is connected to therotational shaft 232 supported by thecylindrical housing 231. - The
second compressor 220B includes aleft shaft portion 240 protruding in a direction opposite to the first compressor 2108. Theleft shaft portion 240 includes acylindrical housing 241 and a rotational shaft (not shown). The rotational shaft is rotated in thecylindrical housing 241. Thesecond transmission portion 920 is connected to the rotational shaft supported by thecylindrical housing 241. -
FIG. 12 is a schematic perspective view of thefirst transmission portion 910. Thefirst transmission portion 910 will be described with reference toFIG. 12 . Thesecond transmission portion 920 described with reference toFIG. 11 may have the same structure as that of thefirst transmission portion 910. Accordingly, the description below relating to the structure and the operation of thefirst transmission portion 910 is used for describing thesecond transmission portion 920. - The
first transmission portion 910 includes anupper pulley 911, alower pulley 912, atension pulley 913 and anendless belt 914. Theupper pulley 911 is mounted to therotational shaft 232 of theright shaft portion 230 of thefirst compressor 210B. Thelower pulley 912 arranged below theupper pulley 911 is mounted to thefirst driving portion 810. Theendless belt 914 is wound on theupper pulley 911, thelower pulley 912 and thetension pulley 913. Thetension pulley 913 pushes theendless belt 914 toward therear mount wall 460 at a position between theupper pulley 911 and thelower pulley 912, and thereby appropriate tensile force is applied to theendless belt 914. - When the
first driving portion 810 is rotated, theendless belt 914 is circulated around theupper pulley 911, thelower pulley 912 and thetension pulley 913. As a result, theupper pulley 911 is rotated. Therotational shaft 232 is rotated by the rotation of theupper pulley 911. The rotation of therotational shaft 232 causes compression operation of thefirst compressor 210B. As a result, the compressed air is generated. - The structure of the housing described in connection with the third embodiment facilitates repairing operation such as replacing of a filter. The housing may have a structure which facilitates repair or check of the driving force transmission mechanism described in connection with the fifth embodiment. In a sixth embodiment, a design technique for facilitating repair or check of the driving force transmission mechanism will be described.
-
FIG. 13 is a partially assembled view of anair compression device 100B. Theair compression device 100B will be described with reference toFIG. 3A ,FIG. 3B ,FIG. 11 andFIG. 13 . - The
housing 400B includes asupport frame 490 and asupport plate 481. Thesupport frame 490 includes afirst column 491, asecond column 492, athird column 493, afourth column 494, afront beam 495 and arear beam 496. Thefirst column 491 is extended downward from a corner portion (seeFIG. 3A ) formed by thefront side edge 421 and theright side edge 423 of thetop plate 420. Thesecond column 492 is extended downward from a corner portion (seeFIG. 3A ) formed by therear side edge 422 and theright side edge 423 of thetop plate 420. Thethird column 493 is extended downward from a corner portion formed by the front side edge 421 (seeFIG. 3A ) and the left side edge 424 (seeFIG. 3B ) of thetop plate 420. Thefourth column 494 is extended downward from a corner portion (secFIG. 3B ) formed by therear side edge 422 and theleft side edge 424 of thetop plate 420. Thefront beam 495 is extended substantially horizontally between thefirst column 491 and thethird column 493. Therear beam 496 is extended substantially horizontally between thesecond column 492 and thefourth column 494. Thesupport plate 481 is supported by thefront beam 495 and therear beam 496. As a result, thesupport plate 481 is laid between the top plate 420 (seeFIG. 3A ) and the bottom plate 430 (seeFIG. 3B ). - As shown in
FIG. 3A andFIG. 13 , thefirst wall 470 is fixed to thefirst column 491 and thesecond column 492 by screws. Accordingly, thefirst wall 470 is detached easily from thesupport frame 490. As shown inFIG 11 , since thefirst transmission portion 910 is formed between thefirst wall 470 and thefirst compressor 210B which is arranged closer to thefirst wall 470 than thesecond wall 480, the operator can access thefirst transmission portion 910 easily after detaching thefirst wall 470. Accordingly, the operator can perform the repair or the check of thefirst transmission portion 910 easily. - As shown in
FIG. 3B andFIG. 13 , thesecond wall 480 is fixed to thethird column 493 and thefourth column 494 by screws. Accordingly, thesecond wall 480 is detached easily from thesupport frame 490. As shown inFIG. 11 , since thesecond transmission portion 920 is formed between thesecond wall 480 and thesecond compressor 220B which is arranged closer to thesecond wall 480 than thefirst wall 470, the operator can access thesecond transmission portion 920 easily after detaching thesecond wall 480. Accordingly, the operator can perform the repair or the check of thesecond transmission portion 920 easily. - A driving portion may be supported by a support member different from a support member which supports a compressor. Alternatively, the driving portion and the compressor may be mounted to a common support member. In this case, an error relating to a relative position between the driving portion and the compressor is decreased. In a seventh embodiment, a technique for decreasing an error relating to a relative position between a driving portion and a compressor will be described.
- As shown in
FIG. 13 , asupport plate 481 comprises aright support plate 482, aleft support plate 483 and alower support plate 484. Each of theright support plate 482 and theleft support plate 483 is mounted on thelower support plate 484. After that, theright support plate 482 and theleft support plate 483 are mounted on afront beam 495 or arear beam 496. -
FIG. 14 is a schematic perspective view of thelower support plate 484. Thesupport plate 481 will be further described with reference toFIG 11 ,FIG. 13 andFIG. 14 . - The
lower support plate 484 includes alower plate 485, aframe rib 486, alattice rib 487 and fourear portions 488. Thelower plate 485 is laid below theright support plate 482 and theleft support plate 483. Theframe rib 486 protrudes upward from a rectangular outer peripheral edge of thelower plate 485. Thelattice rib 487 stands in a rectangular space surrounded by theframe rib 486. Each of theright support plate 482 and theleft support plate 483 is welded to upper edges of thelattice rib 487 and theframe rib 486. Each of the fourear portions 488 protrudes from theframe rib 486 toward thefront beam 495 or therear beam 496. Since each of the fourear portions 488 is fixed to thefront beam 495 or therear beam 496, thelower support plate 484 is held appropriately by asupport frame 490. - As shown in
FIG. 13 andFIG. 14 , a plurality of through holes is formed in each of theright support plate 482, theleft support plate 483 and thelower plate 485 of thelower support plate 484. Each through hole is formed after theright support plate 482 and theleft support plate 483 are welded to thelower support plate 484. Accordingly, a relative relation of positions of the through holes is substantially equal to a positional relation defined by a design drawing. The through hole formed in theright support plate 482 is used for mounting afirst compressor 210B. The through hole formed in theleft support plate 483 is used for mounting asecond compressor 220B. The through hole formed in thelower plate 485 of thelower support plate 484 is used for mounting afirst driving portion 810 and asecond driving portion 820. In the present embodiment, an upper surface is exemplarily shown by upper surfaces of theright support plate 482 and theleft support plate 483. A lower surface is exemplarily shown by a lower surface of thelower plate 485 of thelower support plate 484.
Claims (8)
- An air compression device (100; 100A; 100B) comprising:a first compressor (210; 210 A; 210B) including a first port wall (213; 213A; 213B) in which a first suction port (214; 214B) is formed;a second compressor (220; 220A; 220B) including a second port wall (223; 223A; 223B) in which a second suction port (224; 224B) is formed; whereinthe first port wall (213; 213A; 213B) and the second port wall (223; 223A; 223B) are arranged to face each other,
wherein the air compression device (100; 100A; 100B), further comprisinga suction pipe (300; 300B) which guides an air to the first suction port (214; 214B) and the second suction port (224; 224B), whereinthe suction pipe (300; 300B) is arranged between the first port wall (213; 213A; 213B) and the second port wall (223; 223A; 223B), wherein the suction pipe (300B) includes a suction duct (310B) extending along the first port wall (213B), a connecting pipe (312B) including a first end (315) connected to the suction duct (310B) and a second end (316) connected to the first suction port (214B) and a trim seal (333) which seals an interspace between the suction duct (310B) and the first end (315). - The air compression device (100A; 100B) according to claim 1, further comprising a delivery pipe (500; 500B) which receives a first compressed air from a first delivery port (215) formed in the first port wall (213A; 213B), and receives a second compressed air from a second delivery port (225) formed in the second port wall (223A; 223B),
the first compressed air is generated by the air flowing in through the first suction port (214; 214B) is compressed by the first compressor (210A; 210B),
the second compressed air is generated by the air flowing in through the second suction port (224; 224B) is compressed by the second compressor (220A; 220B). - The air compression device (100B) according to claim 2, wherein
the delivery pipe (500B) includes a manifold (531) in which the first compressed air and the second compressed air join each other and a first fixing member (534; 535) which fixes the manifold (531) to at least one of the first compressor (210B) and the second compressor (220B),
the first fixing member (534; 535) includes a first adjusting structure (565; 566; 576) which enables to adjust a relative position of the manifold (531) against the first compressor (210B) and the second compressor (220B). - The air compression device (100B) according to claim 3, further comprising a second fixing member (580) which fixes the delivery pipe (500B) to the first port wall (213B) at a position different from a position where the first suction port (214B) is formed.
- The air compression device (100B) according to claim 3 or 4, wherein
the delivery pipe (500B) includes a base end pipe (511) and a bent pipe,
the base end pipe (511) extends from the first delivery port (215) toward the second port wall (223B),
the bent pipe bends from the base end pipe (511) and guides the first compressed air to the manifold (531),
the bent pipe includes a second adjusting structure which adjusts a length of a guide section extending from the base end pipe (511) toward the manifold (531). - The air compression device (100B) according to any one of claims 2 to 5, further comprising:a first driving portion (810) which generates a first driving force for driving the first compressor (210B);a first transmission portion (910) which transmits the first driving force to the first compressor (210B);a second driving portion (820) which generates a second driving force for driving the second compressor (220B);a second transmission portion (920) which transmits the second driving force to the second compressor (220B); anda housing (400B) which forms a housing space in which the first compressor (210B), the second compressor (220B), the first driving portion (810), the first transmission portion (910), the second driving portion (820) and the second transmission portion (920) are housed, whereinthe housing (400B) includes an outer circumferential wall (440) including a first wall (470) and a second wall (480),the first wall (470) stands at a position next to the first transmission portion (910),the second wall (480) stands at a position next to the second transmission portion (920).
- The air compression device (100B) according to claim 6, wherein
the housing (400B) includes a top plate (420) to be connected to a vehicle, a bottom plate (430) lying below the top plate (420), an outer circumferential wall (440) standing at a position between the top plate (420) and the bottom plate (430) and a support plate (481) lying at a position between the top plate (420) and the bottom plate (430) and supporting the first compressor (210B) and the second compressor (220B),
the support plate (481) includes an upper surface to which the first compressor (210B) and the second compressor (220B) are mounted and a lower surface to which the first driving portion (810) and the second driving portion (820) are mounted. - The air compression device (100B) according to claim 6 or 7, further comprising:a fan device (710; 720) including a fan blade rotating to generate cooling air which cools the first compressor (210B); anda cooling air flow adjusting box (730) arranged between the fan device (710; 720) and the first compressor (210B), whereinthe cooling air flow adjusting box (730) includes a first adjusting plate (731) facing the fan device (710; 720) and a second adjusting plate (732) facing the first compressor (210B),a circular opening is formed in the first adjusting plate (731),a rectangular opening is formed in the second adjusting plate (732).
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JP2015110704 | 2015-05-29 | ||
PCT/JP2016/065547 WO2016194754A1 (en) | 2015-05-29 | 2016-05-26 | Air compression device |
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EP3306089A4 EP3306089A4 (en) | 2019-01-02 |
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JP (1) | JP6761412B2 (en) |
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WO2023136988A1 (en) * | 2022-01-14 | 2023-07-20 | Illinois Tool Works Inc. | Compressor assembly for an apparatus for inflating and/or repairing inflatable items or products as needed |
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- 2016-05-26 TW TW105116512A patent/TWI612260B/en not_active IP Right Cessation
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WO2023136988A1 (en) * | 2022-01-14 | 2023-07-20 | Illinois Tool Works Inc. | Compressor assembly for an apparatus for inflating and/or repairing inflatable items or products as needed |
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CN107614874B (en) | 2020-09-29 |
TW201704695A (en) | 2017-02-01 |
TWI612260B (en) | 2018-01-21 |
WO2016194754A1 (en) | 2016-12-08 |
JP6761412B2 (en) | 2020-09-23 |
EP3306089A4 (en) | 2019-01-02 |
JPWO2016194754A1 (en) | 2018-03-15 |
CN107614874A (en) | 2018-01-19 |
EP3306089A1 (en) | 2018-04-11 |
SG11201709368XA (en) | 2017-12-28 |
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