WO2017038673A1

WO2017038673A1 - Air compression device

Info

Publication number: WO2017038673A1
Application number: PCT/JP2016/074954
Authority: WO
Inventors: 将黒光; 洋司高嶋; 高橋　亮; 源平田中; 徹水船
Original assignee: ナブテスコ株式会社
Priority date: 2015-08-28
Filing date: 2016-08-26
Publication date: 2017-03-09
Also published as: CN107923379A; CN107923379B; JP6743030B2; TW201713856A; TWI627355B; JPWO2017038673A1

Abstract

Disclosed is an air compression device provided with a compressor that compresses air and generates compressed air, and a cooler that defines an internal space, into which the compressed air flows. The cooler has a first cavity-forming surface provided with a first fan. The compressor has a second cavity-forming surface provided with a second fan. The first cavity-forming surface and the second cavity-forming surface form a cooling duct that permits the flow of a cooling air, which draws heat from the compressor and the cooler. The first fan and the second fan protrude into the cooling duct.

Description

Air compressor

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

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

Patent Documents 1 and 2 propose to arrange a cooler next to a compressor that generates compressed air with respect to the design of the air compressor. Compressed air is supplied from the compressor to the cooler. The cooler can cool the compressed air efficiently.

The temperature of the cooler is raised by the compressed air flowing inside the cooler. Patent Documents 1 and 2 propose to provide fins in the cooler to promote heat dissipation from the cooler. The fins of Patent Documents 1 and 2 protrude in the opposite direction to the compressor. In order to guide the outside air taken in from the outside of the air compressor around the fins of the cooler and to generate forced heat dissipation from the fins of the cooler, the flow path of the outside air is used to cool the compressor. It must be provided separately from the air flow path. In this case, the air compressor is structurally complicated. Designers can rely on natural heat dissipation from the fins of the cooler for heat dissipation from the cooler. In this case, a separate flow path for the fins of the cooler is not required, but the heat dissipation efficiency from the cooler is low.

JP-A-8-261182 JP 2003-90291 A

An object of the present invention is to provide an air compression apparatus having a cooling structure capable of effectively cooling both a cooler and a compressor without requiring a complicated flow path of cooling air.

An air compression device according to one aspect of the present invention includes a compressor that generates compressed air, and a cooler that forms an internal space into which the compressed air flows. The cooler includes a first cavity forming surface provided with a first fin. The compressor includes a second cavity forming surface provided with second fins. The first cavity forming surface and the second cavity forming surface form a cooling duct that allows a flow of cooling air that takes heat from the compressor and the cooler. The first fin and the second fin protrude into the cooling duct.

It is a conceptual diagram of the air compressor of 1st Embodiment. It is a schematic perspective view of the fin which can be utilized for the air compression apparatus shown by FIG. 1 (2nd Embodiment). It is a schematic perspective view of the fin which can be utilized for the air compression apparatus shown by FIG. 1 (2nd Embodiment). It is a conceptual diagram of the air compressor of 3rd Embodiment. It is a schematic perspective view of the cooler of a 4th embodiment. FIG. 5 is a schematic cross-sectional view of the cooler shown in FIG. 4. It is a general | schematic expansion | deployment perspective view of the scroll compressor of 5th Embodiment. It is a schematic perspective view of the cover body of the scroll compressor shown by FIG. It is a general | schematic expansion | deployment perspective view of the air compressor of 6th Embodiment. It is a schematic perspective view of the air compressor of 7th Embodiment. FIG. 10 is a schematic perspective view of a guide frame of the air compression device shown in FIG. 9. FIG. 10B is a schematic rear view of the guide frame shown in FIG. 10A. It is a schematic perspective view of the air compressor of 8th Embodiment. It is a schematic perspective view of the air compressor of 9th Embodiment. FIG. 12B is another schematic perspective view of the air compression device shown in FIG. 12A. It is a schematic perspective view of the exhaust structure of 10th Embodiment. It is a schematic perspective view of the air compression apparatus which has the exhaust structure shown by FIG. It is a schematic perspective view of the air compression apparatus shown by FIG. 14 (11th Embodiment).

<First Embodiment>
Under the prior art described above, the body of the cooler through which the compressed air flows is located between the fins of the cooler and the fins of the compressor. Thus, if the cooling air supplied through a common flow path cools the cooler fins and the compressor fins, the body of the cooler will collide with the flow of cooling air and cause turbulence, for example. This reduces the cooling efficiency. In addition, since the fins of the cooler are separated from the fins of the compressor, an air blower having a large air blowing capacity is required to cool these fins sufficiently. The present inventors have developed a cooling technique for efficiently cooling not only the compressor but also the compressed air even if a small blower is used. In the first embodiment, an exemplary cooling technique is described.

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

The air compression device 100 includes a compressor 200 and a cooler 300. The cooler 300 is disposed next to the compressor 200. The cooler 300 is attached to the compressor 200. The compressor 200 includes a second cavity forming surface 210 located at a portion facing the cooler 300.

The cooler 300 includes a first cavity forming surface 310 located at a portion facing the second cavity forming surface 210 of the compressor 200. An upper connection surface 224 is formed on the upper side of the second cavity forming surface 210, and a lower connection surface 225 is formed on the lower side. An upper connection surface 334 is formed on the upper side of the first cavity forming surface 310, and a lower connection surface 335 is formed on the lower side. The upper connection surface 224 of the compressor 200 and the upper connection surface 334 of the cooler 300 are coupled to each other. Further, the lower connection surface 225 of the compressor 200 and the lower connection surface 335 of the cooler 300 are coupled to each other. *

The second cavity forming surface 210 and the first cavity forming surface 310 define a cooling duct 400 that cooperates and has a space extending in the horizontal direction. That is, each of the second cavity forming surface 210 and the first cavity forming surface 310 has a shape in which the duct is divided in half. Although the shape of the space in the cooling duct 400 may be any shape, in the first embodiment, the space is formed in a rectangular shape. For this reason, the first cavity forming surface 310 is connected to the first upper surface 310a facing downward, the first side surface 310b extending downward from the back end of the first upper surface 310a, and the lower end of the first side surface 310b. And a first lower surface 310c facing. The first side surface 310b is longer than each of the first upper surface 310a and the first lower surface 310C. However, the first side surface 310b may be shorter than the first upper surface 310a and the first lower surface 310C. In this case, the fin protrudes from the first side surface 310b, but may protrude from one of the first upper surface 310a and the first lower surface 310c. The second cavity forming surface 210 is connected to the second upper surface 210a facing downward, the second side surface 210b extending downward from the back end of the second upper surface 210a, and the lower end of the second side surface 210b, and facing upward. A second lower surface 210c. The second side surface 210b is longer than each of the second upper surface 210a and the first lower surface 210C. However, the first side surface 310b may be shorter than each of the first upper surface 310a and the first lower surface 310C. In this case, the fin protrudes from the second side surface 210b, but may protrude from one of the first upper surface 310a and the first lower surface 310c. In this case, the first cavity forming surface 310 includes a fin provided on the first side surface 310b, and the second cavity forming surface 210 includes a fin provided on the second upper surface 210a.

In addition, if the space in the cooling duct 400 is formed in, for example, a circular cross section, the first cavity forming surface 310 and the second cavity forming surface 210 are formed in a curved shape. In this case, the fin may protrude toward the center in the cross section of the space in the cooling duct 400. Alternatively, if the space in the cooling duct 400 is formed in, for example, a triangular shape, the first cavity forming surface 310 and the second cavity forming surface 210 are formed to be inclined. In this case, the inclined surfaces of the first cavity forming surface 310 and the second cavity forming surface 210 are opposed to each other. In this case, the fin may protrude toward the center of the cooling duct 400.

Further, the first cavity forming surface 310 and the second cavity forming surface 210 may be facing each other as in the present embodiment, but even if they are not facing each other, one or more surfaces (planes) , Including the inclined surface and the curved surface), and other members may be interposed between the

cavity forming surfaces

210 and 310. In the present embodiment, the cooling duct 400 includes the first cavity forming surface 310 and the second cavity forming surface 210, but may include other members.

Further, the first cavity forming surface 310 and the second cavity forming surface 210 may be arranged at positions facing each other as in the present embodiment, but the first cavity forming surface 310 and the second cavity forming surface 210 The cavity forming surfaces 210 may be arranged close to each other on the same plane or substantially the same plane. For example, if the space in the cooling duct 400 is formed in a rectangular cross section, the first cavity forming surface 310 and the second cavity forming surface 210 are disposed adjacent to one inner surface of the four inner circumferential surfaces. It may be. In this case, other inner surfaces may be constituted by other members.

The compressor 200 compresses air to generate compressed air. The compressor 200 may be a general scroll compressor. Alternatively, the compressor 200 may be a general rotary compressor. Further alternatively, the compressor 200 may be a general swing compressor. Further alternatively, the compressor 200 may be a typical reciprocating compressor. The principle of this embodiment is not limited to a specific structure of the compressor 200.

Compressed air discharged from the compressor 200 is supplied to the cooler 300. In the cooler 300, an internal space 301 into which compressed air flows is formed. The compressed air may be supplied from the compressor 200 to the internal space 301 of the cooler 300 through a pipe member (not shown) extending across the cooling duct 400. Alternatively, the compressed air may be supplied from the compressor 200 to the internal space 301 of the cooler 300 through a pipe member that bypasses the cooling duct 400. The principle of the present embodiment is not limited to a specific supply path of compressed air from the compressor 200 to the cooler 300.

Cooling air is supplied to the cooling duct 400. Various types of blower devices such as a sirocco fan device, a turbo fan device, a cross flow fan device, and a propeller fan device may be used to supply cooling air to the cooling duct 400. The principle of the present embodiment is not limited to a specific technique for supplying cooling air to the cooling duct 400. In addition, although the drive part (motor etc.) of an air blower may be shared with the drive part of other apparatuses, such as a compressor, the drive part of an air blower is provided separately from the drive part of another apparatus. Thus, the cooling air can be sent to the cooling duct by rotating the fan while the other devices are stopped, and the cooling efficiency can be improved.

The cooler 300 further includes first fins 320 protruding from the first side surface 310b of the first cavity forming surface 310 toward the second side surface 210b of the second cavity forming surface 210 of the compressor 200. The compressor 200 further includes a second fin 220 that protrudes from the second side surface 210 b of the second cavity forming surface 210 toward the first side surface 310 b of the first cavity forming surface 310 of the cooler 300. Both the

fins

320 and 220 protrude in the cooling duct 400.

Cooling air flows into the cooling duct 400. The cooling air takes heat from the

fins

320 and 220 while flowing in the cooling duct 400. As a result, both the cooler 300 and the compressor 200 are cooled.

Since the cooling duct 400 is formed by the first cavity forming surface 310 formed in the cooler 300 and the second cavity forming surface 210 formed in the compressor 200, the air compressor 100 cools them. Does not require a large space for. Thus, the designer can give the air compressor 100 a small dimension.

Second Embodiment
Designers designing air compression devices may give the fins described in connection with the first embodiment various shapes. In the second embodiment, exemplary shapes of the fins are described.

2A and 2B are schematic perspective views of the

fins

101 and 102. FIG. The

fins

101 and 102 will be described with reference to FIGS. 1 to 2B.

A designer who designs an air compression device (not shown) may give the shape of the

fins

101 and 102 to the second fin 220 and the first fin 320 described with reference to FIG. Alternatively, the designer may project the

fins

101 and 102 from the inner wall surface of the cooling duct 400A described with reference to FIG.

As shown in FIG. 2A, the fin 101 has a flat surface extending substantially parallel to the flow direction of the cooling air. Therefore, the cooling air can smoothly flow along the flat surface of the fin 101.

2B, the fin 102 has a wavy surface extending in the flow direction of the cooling air. Since the fin 102 has a wider contact area with the cooling air than the fin 101, the cooling air can take a large amount of heat from the fin 102.

<Third Embodiment>
The air compressing device may have a partition wall disposed inside the cooling duct. If the internal space of the cooling duct is partitioned into a plurality of small spaces by the partition wall, the cooling air flowing in the cooling duct is rectified. As a result, the cooling air can take a large amount of heat from the compressed air in the compressor and the cooler. In the third embodiment, an exemplary air compression device having a partition wall is described.

FIG. 3 is a conceptual diagram of an air compressor 100A of the third embodiment. The air compressor 100A will be described with reference to FIG. The code | symbol which is common in 1st Embodiment means that the element to which the said code | symbol was attached | subjected is functionally common in 1st Embodiment. Therefore, description of 1st Embodiment is used for the element to which the common code | symbol was attached | subjected.

As in the first embodiment, the air compressor 100A includes a compressor 200 and a cooler 300. The description of the first embodiment is incorporated in these elements.

The air compressor 100A further includes a partition wall 410 disposed between the second fin 220 and the first fin 320. Unlike the

fins

220 and 320 that protrude in the horizontal direction in the cooling duct 400, the partition wall 410 extends in the vertical direction in the cooling duct 400, and the internal space of the cooling duct 400 is divided into a left flow space 411 and a right flow space 412. Divide into The left flow space 411 is defined between the partition wall 410 and the first cavity forming surface 310 of the cooler 300. The right flow space 412 is defined between the partition wall 410 and the second cavity forming surface 210 of the compressor 200. The cooling air flows into the left flow space 411 and the right flow space 412.

The partition wall 410 may or may not contact the leading edge of each of the second fins 220 and the first fins 320. If the partition wall 410 abuts on the second fins 220 protruding in the right flow space 412, the second fins 220 divide the right flow space 412 up and down. If the partition wall 410 comes into contact with the first fin 320 protruding in the left flow space 411, the first fin 320 divides the left flow space 411 vertically. In this case, since the heat of the second fins 220 and the first fins 320 can be released to the partition wall 410, the cooling air can efficiently take heat from the compressed air in the compressor 200 and the cooler 300. If the partition wall 410 is separated from at least one of the

fins

220 and 320, heat transfer between the

fins

220 and 320 is less likely to occur.

The partition wall 410 may be formed of the same material as one or both of the

fins

220 and 320. Alternatively, the partition wall 410 may be formed from a different material than the

fins

220 and 320. For example, the designer may select a material having a lower thermal conductivity than the material used for the

fins

220 and 320 as the material of the partition wall 410. In this case, since the amount of heat that travels between the compressor 200 and the cooler 300 is small, complicated thermal interference between the compressor 200 and the cooler 300 is less likely to occur. This facilitates control related to the heat of compressor 200 and cooler 300.

<Fourth embodiment>
Designers designing air compression devices can give the cooler different structures and different shapes. In the fourth embodiment, an exemplary cooler is described.

FIG. 4 is a schematic perspective view of the cooler 300B of the fourth embodiment. With reference to FIG.3 and FIG.4, the cooler 300B is demonstrated.

The cooler 300B includes an outer shell 330 having a first cavity forming surface 310 formed on the outer surface, and a check valve 340. The outer shell 330 is a substantially rectangular box. The compressed air flows into the outer shell 330. The check valve 340 protrudes upward from the outer shell 330. The compressed air is exhausted from the inside of the outer shell 330 through the check valve 340. The cooler 300B can be used as the cooler 300 described with reference to FIG.

The outer shell 330 includes an upstream surface 331 and a downstream surface 332 opposite to the upstream surface 331. The cooling air flows from the upstream surface 331 toward the downstream surface 332. The height dimension (vertical direction) of the upstream surface 331 and the downstream surface 332 is larger than the width dimension (horizontal direction) of the upstream surface 331 and the downstream surface 332.

The outer shell 330 includes a connection surface 333 between the upstream surface 331 and the downstream surface 332. The connection surface 333 is connected to a compressor (not shown) or a partition member (not shown) disposed between the compressor and the outer shell 330.

The connection surface 333 includes an upper connection surface 334 located above the first cavity forming surface 310 and a lower connection surface 335 located below the first cavity forming surface 310. The cooling air flows into the flow region defined by the first cavity forming surface 310 between the upper connection surface 334 and the lower connection surface 335. The upper connection surface 334 is substantially flush with the lower connection surface 335. The upper connection surface 334 and the lower connection surface 335 are connected to a compressor or a partition member disposed between the compressor and the outer shell 330. The flow region defined by the first cavity forming surface 310 is recessed from the upper connection surface 334 and the lower connection surface 335.

The outer shell 330 includes a plurality of first fins 336 that protrude in the flow region. The plurality of first fins 336 extend from the upstream surface 331 toward the downstream surface 332. The leading edge of each of the plurality of first fins 336 is substantially flush with the upper connection surface 334 and the lower connection surface 335. The leading edge of each of the plurality of first fins 336 may contact a compressor or a partition member disposed between the compressor and the outer shell 330.

The outer shell 330 includes an inflow tube 337 that protrudes substantially at the center of the flow region. The compressed air flows into the inner space of the outer shell 330 through the inlet 338 surrounded by the inflow cylinder 337. The cooling air flowing in the flow region takes heat from the first cavity forming surface 310 and the plurality of first fins 336 that define the flow region, so that the compressed air flowing into the inner space of the outer shell 330 is efficiently To be cooled.

FIG. 5 is a schematic cross-sectional view showing the internal structure of the cooler 300B. The cooler 300B is further described with reference to FIG.

The outer shell 330 includes an upper wall 351, a lower wall 352, an upstream wall 353, and a downstream wall 354. The outer wall of the check valve 340 is formed integrally with the upper wall 351 in the vicinity of the corner defined by the upper wall 351 and the upstream wall 353. The upper wall 351 extends substantially horizontally between the upper end of the upstream wall 353 and the upper end of the downstream wall 354. The lower wall 352 extends substantially horizontally between the lower end of the upstream wall 353 and the lower end of the downstream wall 354. The upstream wall 353 and the downstream wall 354 extend substantially vertically.

The outer shell 330 includes a plurality of partition walls that partition a substantially rectangular internal space surrounded by the upper wall 351, the lower wall 352, the upstream wall 353, and the downstream wall 354, and define a plurality of flow paths. The plurality of partition walls include a linear upper partition wall 361, a linear lower partition wall 362, and a substantially τ-shaped central partition wall 363.

The upper partition wall 361 extends substantially horizontally from the upstream wall 353. The tip of the upper partition wall 361 is separated from the downstream wall 354.

The lower partition wall 362 extends substantially horizontally below the upper partition wall 361. Both end portions of the lower partition wall 362 are separated from the upstream wall 353 and the downstream wall 354, respectively.

The central partition wall 363 is formed between the upper partition wall 361 and the lower partition wall 362. The central partition wall 363 includes a straight wall 364 and a bent wall 365. The straight wall 364 extends substantially horizontally from the downstream wall 354. The tip of the straight wall 364 is separated from the upstream wall 353. The bent wall 365 extends downward from the straight wall 364 near the inlet 338 and then bends toward the downstream wall 354. The distal end portion of the bending wall 365 is separated from the downstream wall 354. The straight wall 364 and the bent wall 365 partially surround the inflow port 338.

The outer shell 330 has a first internal flow path 371, a second internal flow path 372, a third internal flow path in a substantially rectangular internal space surrounded by the upper wall 351, the lower wall 352, the upstream wall 353, and the downstream wall 354. An internal channel 373, a fourth internal channel 374, and a fifth internal channel 375 are defined.

The first internal flow path 371 is defined by a straight wall 364 and a bent wall 365. The first internal flow path 371 is continuous with the inflow port 338 and extends toward the downstream wall 354. The compressed air flowing in from the inflow port 338 flows along the first internal flow path 371 and travels toward the downstream wall 354.

The second internal flow path 372 is defined by the central partition wall 363 and the lower partition wall 362. The third internal flow path 373 is defined by the lower partition wall 362 and the lower wall 352. The compressed air that has reached the end of the first internal flow path 371 flows downward through a gap between the distal end portion of the bent wall 365 and the downstream wall 354. A part of the compressed air then flows toward the upstream wall 353 through the second internal flow path 372. The other part of the compressed air flows toward the upstream wall 353 through the third internal flow path 373.

Compressed air that has reached the end of the third internal flow path 373 flows upward through the gap between the lower partition wall 362 and the upstream wall 353, and merges with the compressed air at the end of the second internal flow path 372. The compressed air at the end of the second internal flow path 372 flows upward through the gap between the straight wall 364 and the upstream wall 353 and flows into the fourth internal flow path 374.

Compressed air then flows along the fourth internal flow path 374 and travels toward the downstream wall 354. The compressed air that has reached the end of the fourth internal flow path 374 flows upward through the gap between the upper partition wall 361 and the downstream wall 354 and flows into the fifth internal flow path 375.

Compressed air then flows along the fifth internal flow path 375 and travels toward the upstream wall 353. The compressed air is finally exhausted from the check valve 340 disposed near the end of the fifth internal flow path 375.

A substantially rectangular internal space surrounded by the upper wall 351, the lower wall 352, the upstream wall 353, and the downstream wall 354 is located inside the first cavity forming surface 310 that forms a flow region through which cooling air flows. The flow path of the compressed air is a meandering flow path in a substantially rectangular internal space surrounded by the upper wall 351, the lower wall 352, the upstream wall 353, and the downstream wall 354. For this reason, the heat exchange area is long. Therefore, the compressed air is effectively cooled by the cooling air.

As a result of the cooling of the compressed air, the inner wall surface of the outer shell 330 may condense. Condensed water flows downward under the action of gravity, and may eventually accumulate in the lowest channel (third internal channel 373). However, the flow path of the compressed air communicates between the inlet 338 and the check valve 340 without passing through the third internal flow path 373. For this reason, since the compressed air can go to the check valve 340 through the second internal flow path 372, the compressed air is hardly clogged in the cooler 300B.

<Fifth Embodiment>
A designer who designs an air compressor may select a scroll compressor as the compressor. In the fifth embodiment, an exemplary scroll compressor is described.

FIG. 6 is a schematic exploded perspective view of a scroll compressor 200C of the fifth embodiment. The scroll compressor 200C will be described with reference to FIGS.

The scroll compressor 200C can be used as the compressor 200 described with reference to FIG. The scroll compressor 200 C includes a holding frame body 230, a swinging rotary body 240, and a lid body 250.

The holding frame 230 includes a leg portion 231, an outer shell body 232, and a shaft portion 233. The leg 231 is fixed to a base (not shown). The outer shell body 232 is connected to the upper end of the leg portion 231 and defines a generally circular accommodation space 239. The swinging rotator 240 is accommodated in the accommodation space 239.

The outer shell 232 includes a ring wall 261, an upper arc wall 262, a lower arc wall 263, an inflow wall 264, and an outflow wall 265. Ring wall 261 includes an outer surface 266 and an inner surface 267 opposite to outer surface 266. The shaft portion 233 protrudes from the outer surface 266. The inner surface 267 faces the swinging rotator 240.

The upper arc wall 262 protrudes toward the lid 250 from the upper part of the outer edge of the ring wall 261 that describes a circular outline. The lower arc wall 263 protrudes from the lower part of the outer edge of the ring wall 261 toward the lid body 250. The upper arc wall 262, the lower arc wall 263, and the ring wall 261 define an accommodation space 239 in which the swinging rotary body 240 is accommodated in cooperation with the lid body 250.

The inflow wall 264 connects one end of the upper arc wall 262 (the front end in FIG. 6) and one end of the lower arc wall 263 (the front end in FIG. 6). The inflow wall 264 protrudes from the one end of the upper arc wall 262 and the one end of the lower arc wall 263 at a substantially right angle with respect to the protruding direction of the shaft portion 233. The inflow wall 264 has a substantially C-shaped cross section. The inflow wall 264 cooperates with the lid body 250 to define an inflow port through which cooling air flows.

The outflow wall 265 is formed between the other end of the upper arc wall 262 (the back end in FIG. 6) and the other end of the lower arc wall 263 (the back end in FIG. 6). The outflow wall 265 protrudes from the upper arc wall 262 and the lower arc wall 263 in the direction opposite to the inflow wall 264. Similar to the inflow wall 264, the outflow wall 265 has a substantially C-shaped cross section. The outflow wall 265 cooperates with the lid body 250 to define an outflow port from which cooling air flows out.

The shaft portion 233 includes a cylindrical portion 234 and a rotating shaft 235. The cylindrical portion 234 protrudes from the outer surface 266 of the ring wall 261. A space in the cylindrical portion 234 accommodates a conversion mechanism (not shown) that converts the rotational motion of the rotating shaft 235 into the swinging rotational motion of the swinging rotating body 240. Various techniques used for known scroll compressors may be used for the conversion mechanism. The principle of this embodiment is not limited to a specific structure of the conversion mechanism.

The rotating shaft 235 receives a driving force generated by a motor or other driving source. The rotating shaft 235 is connected to the conversion mechanism described above within the cylindrical portion 234.

The rocking rotator 240 includes a first disk 241, a second disk 242, a movable scroll 243, and a large number of fins 244. The first disk 241 is disposed next to the inner surface 267 of the ring wall 261. The second disk 242 is disposed in parallel with the first disk 241 while forming a gap with the first disk 241. The second disk 242 is disposed between the first disk 241 and the lid body 250. The spiral movable scroll 243 protrudes from the second disk 242 toward the lid 250. The plurality of fins 244 divide the space between the first disk 241 and the second disk 242 into a plurality of flow paths having a narrow cross section. A space formed between the plurality of fins 244 functions as a cooling channel for cooling the movable scroll 243.

The first disc 241 is connected to a conversion mechanism in the cylindrical portion 234. As a result, the swinging rotation of the swinging rotator 240 is caused by the rotation of the rotating shaft 235. During the rocking rotation of the rocking rotator 240, the center of the movable scroll 243 rotates around the rotation center axis of the rotation shaft 235.

Cooling air that has flowed in from the inflow port defined by the inflow wall 264 and the lid body 250 passes through the space subdivided by the plurality of fins 244, and from the outflow port defined by the outflow wall 265 and the lid body 250. Exhausted. As a result, the swinging rotator 240 is effectively cooled.

FIG. 7 is a schematic perspective view of the lid body 250. The lid 250 will be described with reference to FIGS. 3, 6 and 7.

As shown in FIG. 6, the lid body 250 includes a ring lid plate 251 and an accommodation wall 252. The ring lid plate 251 and the accommodation wall 252 generally have a circular cross section. The ring lid plate 251 is larger in diameter than the receiving wall 252. The ring lid plate 251 includes an inner surface 253 and an outer surface 254 opposite to the inner surface 253. The inner surface 253 is in close contact with the end surfaces of the upper arc wall 262 and the lower arc wall 263.

As shown in FIG. 6, the housing wall 252 includes a peripheral wall 255 and an end wall 256. The peripheral wall 255 protrudes from the outer surface 254 of the ring lid plate 251 in the axial direction of the rotary shaft 235. The peripheral wall 255 defines an accommodation space having a substantially circular cross section in which the second disk 242 and the movable scroll 243 are accommodated. The peripheral wall 255 surrounds the second disc 242. The end wall 256 closes the end of the accommodation space defined by the peripheral wall 255.

7, the lid body 250 includes a spiral fixed scroll 257 that protrudes from the end wall 256 toward the second disk 242. The fixed scroll 257 forms a spiral space complementary to the movable scroll 243. The movable scroll 243 is inserted into the spiral space and meshes with the fixed scroll 257. During the rocking rotation of the rocking rotator 240, the air is compressed by the fixed scroll 257 and the movable scroll 243 to become compressed air.

As shown in FIG. 7, a discharge port 258 is formed in the end wall 256. The discharge port 258 is located substantially at the center of the fixed scroll 257. The compressed air compressed in the scroll compressor 200 C is exhausted from the discharge port 258.

As shown in FIG. 6, the lid 250 includes

vertical walls

271 and 272. The vertical wall 271 protrudes from the outer peripheral surface of the ring lid plate 251 toward the outer side in the radial direction of the ring lid plate 251, and is in close contact with the two end surfaces of the inflow wall 264. Thereby, an inflow port for cooling air that flows in to cool the swinging rotator 240 is formed. The vertical wall 272 protrudes from the outer peripheral surface of the ring lid plate 251 toward the outer side in the radial direction of the ring lid plate 251 in the direction opposite to the vertical wall 271. The vertical wall 272 is in close contact with the two end faces of the outflow wall 265. Thereby, the outflow port which discharges the cooling air after cooling the rocking | swiveling rotary body 240 is formed.

As shown in FIG. 6, the lid body 250 includes an upper boundary wall 273 and a lower boundary wall 274. A lower surface of the upper boundary wall 273 is a second upper surface 210 a of the second cavity forming surface 210. The upper boundary wall 273 protrudes from the outer surface 254 and the end wall 256 of the ring lid plate 251, and defines an upper boundary of a region through which cooling air for cooling the fixed scroll 257 flows. The lower boundary wall 274 is located below the upper boundary wall 273. The upper surface of the lower boundary wall 274 is a second lower surface 210 c of the second cavity forming surface 210. Similar to the upper boundary wall 273, the lower boundary wall 274 protrudes from the outer surface 254 and the end wall 256 of the ring lid plate 251. The lower boundary wall 274 defines the lower boundary of the region through which cooling air for cooling the fixed scroll 257 flows.

The lid body 250 includes a plurality of second fins 220C. The plurality of fins 220 C protrude from the outer surface 254 of the ring lid plate 251 and the end wall 256 of the receiving wall 252 between the upper boundary wall 273 and the lower boundary wall 274. That is, the outer surface 254 of the ring lid plate 251 and the end wall 256 of the receiving wall 252 are the second side surface 210 b of the second cavity forming surface 210.

<Sixth Embodiment>
The designer can design various air compressors based on the technical principles described in relation to the fourth and fifth embodiments. In the sixth embodiment, an exemplary air compressor is described.

FIG. 8 is a schematic exploded perspective view of an air compressor 100D of the sixth embodiment. The air compressor 100D will be described with reference to FIGS. 3, 4, 7 and 8. FIG. The code | symbol which is common in 4th Embodiment or 5th Embodiment means that the element to which the said code | symbol was attached | subjected is functionally in common with 4th Embodiment or 5th Embodiment. Therefore, description of 4th Embodiment or 5th Embodiment is used for the element to which the common code | symbol was attached | subjected.

The air compressor 100D includes the cooler 300B described in relation to the fourth embodiment. The description of the fourth embodiment is applied to the cooler 300B. That is, the cooling duct 400 includes the first cavity forming surface 310 in the cooler 300B, the outer surface 254 and the end wall 256 of the ring lid plate 251 of the lid 250, the lower surface of the upper boundary wall 273, and the upper surface of the lower boundary wall 274. And formed by.

The air compressor 100D further includes the scroll compressor 200C described in relation to the fifth embodiment. The description of the fifth embodiment is applied to the scroll compressor 200C.

The air compressor 100D further includes a partition wall 410D. The partition wall 410D is configured by a heat insulating member. The partition wall 410D is sandwiched between the leading edges of the first fins 336 of the cooler 300B and the leading edges of the second fins 220C of the scroll compressor 200C. Since the partition wall 410D has a lower thermal conductivity than the first fin 336 and the second fin 220C, it is difficult for heat to flow between the scroll compressor 200C and the cooler 300B.

The air compressor 100D further includes a supply pipe 420. An insertion hole 413 is formed substantially at the center of the partition wall 410D. The supply pipe 420 is inserted into the insertion hole 413.

The supply pipe 420 includes an upstream end 421 and a downstream end 422. The upstream end 421 is inserted into the discharge port 258 (see FIG. 7) of the scroll compressor 200C. The downstream end 422 is inserted into the inlet 338 (see FIG. 4) of the cooler 300B. Therefore, the compressed air is supplied from the scroll compressor 200C to the cooler 300B through the supply pipe 420. Since both ends of the supply pipe 420 are held by the scroll compressor 200 C and the cooler 300 B, excessively high stress does not occur at the discharge port 258 and the inflow port 338.

As described in relation to the fifth embodiment, the flow path of the cooling air for cooling the movable scroll 243 is defined between the holding frame body 230 and the lid body 250. The flow path of the cooling air for cooling the compressed air in the fixed scroll 257 (see FIG. 7) and the cooler 300B is formed in the first cavity forming surface 310 and the lid 250 formed in the cooler 300B. Defined by the second cavity forming surface 210. Therefore, the movable scroll 243 and the fixed scroll 257 disposed between the two flow paths are effectively cooled.

<Seventh embodiment>
According to the technical principle of the sixth embodiment, the fixed scroll and the movable scroll are effectively cooled by the arrangement of the fixed scroll and the movable scroll between the two flow paths. A common blower may be used to supply cooling air to the two flow paths. In this case, the designer can give the air compressor a small dimension. In the seventh embodiment, an exemplary air compressor that supplies cooling air to two flow paths using a common blower will be described.

FIG. 9 is a schematic perspective view of an air compressor 100E according to the seventh embodiment. The air compressor 100E is described with reference to FIGS. The code | symbol which is common in 6th Embodiment means that the element to which the said code | symbol was attached | subjected is functionally common in 6th Embodiment. Therefore, description of 6th Embodiment is used for the element to which the common code | symbol was attached | subjected.

Similar to the sixth embodiment, the air compressor 100E includes a scroll compressor 200C (see FIG. 9), a cooler 300B (see FIG. 9), a partition wall 410D (see FIG. 8), and a supply pipe 420. (See FIG. 8). The description of the sixth embodiment is incorporated in these elements.

As shown in FIG. 9, the air compression device 100 E includes a base 110. Legs 231 (see FIG. 8) of the holding frame 230 are defined on the base 110. The cooler 300B is fixed to the lid 250 via a partition wall 410D (see FIG. 8). Therefore, the scroll compressor 200 C and the cooler 300 B are stably installed on the base 110.

The air compressor 100E includes a blower 430 and a first guide frame 440. The blower 430 generates cooling air. The first guide frame 440 is disposed between the blower 430 and the assembly formed by the scroll compressor 200C and the cooler 300B. The first guide frame 440 traps the cooling air generated by the blower 430 between the blower 430 and the assembly formed by the scroll compressor 200C and the cooler 300B. That is, the first guide frame 440 constitutes an upstream guide portion that guides cooling air to the cooling duct 400. By the first guide frame 440, the cooling air intensively flows into the two flow paths described with reference to FIG.

FIG. 10A is a schematic perspective view of the first guide frame 440. FIG. 10B is a schematic rear view of the first guide frame 440. The first guide frame 440 will be described with reference to FIGS. 8 to 10B.

As shown in FIG. 9, the first guide frame 440 includes a mounting box 441 and a packing 442. As shown in FIG. 10A, the mounting box 441 includes a peripheral wall 443, a first mounting wall 444, and a second mounting wall 445.

As shown in FIG. 10A, the peripheral wall 443 defines a substantially rectangular outer peripheral contour. As shown in FIG. 9, the blower 430 is attached to the first attachment wall 444. As shown in FIG. 10A, a substantially circular opening 446 is formed in the first mounting wall 444. The blower 430 sends cooling air into the first guide frame 440 through the opening 446. As shown in FIG. 10B, the second mounting wall 445 is formed with a substantially rectangular opening 447. The packing 442 is attached to the outer surface of the second attachment wall 445 and surrounds the opening 447.

As shown in FIG. 8, the cooler 300 B includes an outer surface 339 opposite to the connection surface 333. FIG. 8 shows points P01 and P02. The point P01 indicates the upper end of the corner line between the upstream surface 331 and the outer surface 339. The point P02 indicates the lower end of the corner line between the upstream surface 331 and the outer surface 339.

8, the inflow wall 264 of the scroll compressor 200 C includes an upstream surface 281, a concave surface 282, and a flat surface 283. When the cooler 300B is assembled to the scroll compressor 200C, the upstream surface 281 is substantially flush with the upstream surface 331 of the cooler 300B. The concave surface 282 is bent at a substantially right angle from the upstream surface 281 and serves as an inner peripheral surface of an inflow port into which cooling air for cooling the movable scroll 243 flows. The flat surface 283 is bent at a right angle from the upstream surface 281 on the side opposite to the concave surface 282 and extends substantially vertically. FIG. 8 shows points P03 and P04. The point P03 indicates the lower end of the corner line between the flat surface 283 and the upstream surface 281. The point P04 indicates the upper end of the corner line between the flat surface 283 and the upstream surface 281.

When the cooler 300B is assembled to the scroll compressor 200C, a rectangular frame region having corners at the points P01 to P04 is formed. The two flow paths of the cooling air described in relation to the sixth embodiment have an opening formed by a rectangular frame region defined by the points P01 to P04 as an upstream end. The rectangular area defined by the points P01 to P04 is complementary to the rectangular opening 447 formed in the second mounting wall 445 of the first guide frame 440. The rectangular area defined by the points P01 to P04 may be fitted into the opening 447. Since the opening 447 is surrounded by the packing 442, the cooling air generated by the blower 430 can flow into the two flow paths without leaking from the first guide frame 440.

<Eighth Embodiment>
The designer may incorporate various devices, arrangements and structures for driving the compressor into the air compression device. In an eighth embodiment, an exemplary drive technique for driving a compressor is described.

FIG. 11 is a schematic perspective view of an air compressor 100F of the eighth embodiment. The air compression apparatus 100F will be described with reference to FIGS. The code | symbol which is common in 7th Embodiment means that the element to which the said code | symbol was attached | subjected is functionally common in 7th Embodiment. Therefore, description of 7th Embodiment is used for the element to which the common code | symbol was attached | subjected.

Similar to the seventh embodiment, the air compressor 100F includes a base 110 (see FIG. 11), a scroll compressor 200C (see FIG. 11), a cooler 300B (see FIG. 11), and a partition wall 410D. (See FIG. 8), a supply pipe 420 (see FIG. 8), a blower 430 (see FIG. 11), and a first guide frame 440 (see FIG. 11). The description of the seventh embodiment is incorporated in these elements.

As shown in FIG. 9, the scroll compressor 200C includes an intake duct 280. The flow path defined by the intake duct 280 is a space in which the fixed scroll 257 (see FIG. 7) and the movable scroll 243 (see FIG. 8) mesh (that is, a space surrounded by the holding frame body 230 and the lid body 250). It leads to.

As shown in FIG. 11, the air compression apparatus 100F includes a filter duct 120. The filter duct 120 includes a filter part 121 and a flexible duct 122. The proximal end of the flexible duct 122 is connected to the intake duct 280 (see FIG. 9). The filter part 121 is attached to the tip part of the flexible duct 122. When the scroll compressor 200 C is driven, a negative pressure environment is generated in the intake duct 280 and the flexible duct 122. As a result, the air around the filter unit 121 flows into the space where the fixed scroll 257 (see FIG. 7) and the movable scroll 243 (see FIG. 8) mesh with each other through the flexible duct 122 and the intake duct 280. At this time, the filter unit 121 removes foreign substances from the air that has flowed in. The fixed scroll 257 and the movable scroll 243 compress the air that flows in to generate compressed air.

11, the air compression device 100F includes a frame body 500. The frame 500 includes a first column 510, a second column 520, a third column 530, a fourth column 540, a first beam member 550, a second beam member 560, and a bottom plate 570. The bottom plate 570 has a substantially rectangular shape. The bottom plate 570 lies below the base 110. The first column 510, the second column 520, the third column 530, and the fourth column 540 extend upward from the four corners of the bottom plate 570. The first support column 510 and the third support column 530 are arranged on one diagonal line of the bottom plate 570. The second support column 520 and the fourth support column 540 are arranged on another diagonal line of the bottom plate 570. The first beam member 550 extends substantially horizontally between the first column 510 and the second column 520. The second beam member 560 extends substantially horizontally between the third support column 530 and the fourth support column 540. The first beam member 550 extends substantially parallel to the second beam member 560. The base 110 is fixed on the first beam member 550 and the second beam member 560.

As shown in FIG. 11, the air compression device 100F includes a motor 610 and a transmission mechanism 620. The base 110 includes an upper surface 111 and a lower surface 112 opposite to the upper surface 111. The scroll compressor 200 C is fixed to the upper surface 111, while the motor 610 is fixed to the lower surface 112. Since the scroll compressor 200C and the motor 610 are arranged vertically, the designer who designs the air compressor 100F can give a small value to the area of the frame 500 on the horizontal plane.

The transmission mechanism 620 includes an upper pulley 621, a lower pulley 622, a tension pulley 623, and an endless belt 624. The motor 610 includes a motor shaft 611 extending substantially parallel to the rotation shaft 235 of the scroll compressor 200C. The upper pulley 621 is attached to the rotary shaft 235. The lower pulley 622 is attached to the motor shaft 611. Endless belt 624 surrounds upper pulley 621 and lower pulley 622. The tension pulley 623 gives an appropriate tension to the endless belt 624.

When the motor 610 operates, the motor shaft 611 rotates. As a result, the endless belt 624 that meshes with the lower pulley 622 attached to the motor shaft 611 rotates and rotates the upper pulley 621. Since the rotary shaft 235 to which the upper pulley 621 is attached rotates, the fixed scroll 257 (see FIG. 7) and the movable scroll 243 (see FIG. 8) compress the air in the scroll compressor 200C and generate compressed air. To do.

<Ninth Embodiment>
The designer can design various housings that protect the compressor and other devices using the frame described in the context of the eighth embodiment. In the ninth embodiment, an exemplary frame structure is described.

FIG. 12A is a schematic perspective view of an air compression device 100G of the ninth embodiment. FIG. 12B is another schematic perspective view of the air compression device 100G. The air compressor 100G will be described with reference to FIGS. 8 and 11 to 12B. The reference sign common to the eighth embodiment means that the element to which the reference sign is attached is functionally common to the eighth embodiment. Therefore, description of 8th Embodiment is used for the element to which the common code | symbol was attached | subjected.

Similar to the eighth embodiment, the air compressor 100G includes a base 110 (see FIG. 11), a filter duct 120 (see FIG. 11), a scroll compressor 200C (see FIG. 11), and a cooler 300B. (See FIG. 11), partition wall 410D (see FIG. 8), supply pipe 420 (see FIG. 8), blower 430 (see FIG. 11), and first guide frame 440 (see FIG. 11). ), A motor 610 (see FIG. 11), and a transmission mechanism 620 (see FIG. 11). The description of the eighth embodiment is incorporated in these elements.

As shown in FIG. 12A, the air compressor 100G further includes a housing 700. The frame 500 described with reference to FIG. 11 is used as a part of the housing 700.

As shown in FIG. 12A, the housing 700 includes a top plate 710. The top plate 710 is an upper end of the first column 510 (see FIG. 11), the second column 520 (see FIG. 11), the third column 530 (see FIG. 11), and the fourth column 540 (see FIG. 11). Installed. Accordingly, the top plate 710 lies substantially horizontally on the bottom plate 570 (see FIG. 12B) and the base 110 (see FIG. 11).

The housing 700 includes a right panel 720 (see FIG. 12A) and a left panel 730 (see FIG. 12B). The right panel 720 is a space surrounded by a bottom plate 570 (see FIG. 12B), a top plate 710 (see FIG. 12A), a first column 510 (see FIG. 11), and a fourth column 540 (see FIG. 11). Block. The left panel 730 closes a space surrounded by the bottom plate 570, the top plate 710, the second support column 520 (see FIG. 11), and the third support column 530 (see FIG. 11).

As shown in FIG. 12A, the housing 700 includes an upper cover 740 and a lower cover 750. The upper cover 740 closes a space surrounded by the top plate 710, the first beam member 550 (see FIG. 11), the first support column 510 (see FIG. 11), and the second support column 520 (see FIG. 11). The blower 430 (see FIG. 11) and the first guide frame 440 (see FIG. 11) are disposed between the upper cover 740 and the scroll compressor 200C. The lower cover 750 is surrounded by a bottom plate 570 (see FIG. 11), a first beam member 550 (see FIG. 11), a first support column 510 (see FIG. 11), and a second support column 520 (see FIG. 11). Block the space. The lower cover 750 includes a holding frame 751 and a plurality of flange plates 752. The holding frame 751 is formed from a plate material along the bottom plate 570, the first beam member 550, the first support column 510, and the second support column 520. The plurality of ribs 752 are held by a holding frame 751. Each of the plurality of ribs 752 extends substantially horizontally in a space surrounded by the holding frame 751. The plurality of ribs 752 are aligned in the vertical direction.

As described with reference to FIG. 11, the scroll compressor 200 C sucks through the filter duct 120. Air outside the casing 700 (outside air) is sucked into the filter duct 120 through a gap formed between the plurality of ribs 752. Similarly, the blower 430 also sucks outside air through a gap formed between the plurality of ribs 752 and generates cooling air.

12B, the air compression device 100G includes a cooling device 810, a dehumidifying device 820, and a control panel 830. The cooling device 810 is attached to the housing 700 on the opposite side of the upper cover 740. The dehumidifying device 820 and the control panel 830 are attached to the housing 700 on the opposite side of the lower cover 750.

Compressed air generated by the scroll compressor 200C (see FIG. 11) is supplied to the cooling device 810 through the cooler 300B (see FIG. 11). Since the cooling device 810 is disposed outside the housing 700, the compressed air is effectively cooled by the outside air in the cooling device 810. Thereafter, the compressed air is supplied to the dehumidifier 820. The dehumidifier 820 dehumidifies the compressed air. The dehumidified compressed air is supplied to a tank for storing the compressed air and various pneumatic devices. The control panel 830 controls operations of the motor 610 (see FIG. 11), the blower 430 (see FIG. 11), and other devices.

<Tenth Embodiment>
The designer may provide the housing with various structures for exhausting the cooling air generated by the blower. In the tenth embodiment, an exemplary frame structure having an exhaust function will be described.

FIG. 13 is a schematic perspective view of the exhaust structure 130 of the tenth embodiment. The exhaust structure 130 will be described with reference to FIGS. 8, 11, 12A and 13.

As shown in FIG. 13, the exhaust structure 130 includes an exhaust plate 760 and a second guide frame 770. The exhaust plate 760 is a space surrounded by a bottom plate 570 (see FIG. 11), a top plate 710 (see FIG. 12A), a third support column 530 (see FIG. 11), and a fourth support column 540 (see FIG. 11). Close partly. The exhaust plate 760 is located on the side opposite to the upper cover 740 (see FIG. 12A). The exhaust plate 760 is used as a part of the housing 700 (see FIG. 12A).

13, the exhaust plate 760 includes an outer surface 761 and an inner surface 762 opposite to the outer surface 761. The outer surface 761 forms a part of the outer surface of the housing 700 (see FIG. 12A). Inner surface 762 partially defines an accommodation space in which scroll compressor 200C (see FIG. 11) is accommodated. The cooling device 810 is attached to the outer surface 761. The second guide frame 770 is attached to the inner surface 762.

As shown in FIG. 13, the second guide frame 770 includes a box portion 771 and a packing 772. Box portion 771 includes a peripheral wall 773 and an opposing wall 774. The peripheral wall 773 protrudes inward from the exhaust plate 760. The peripheral wall 773 includes a downstream edge 775 and a rectangular edge 776. The downstream edge 775 is adjacent to the exhaust plate 760. A rectangular edge 776 surrounds the opposing wall 774. The facing wall 774 faces the exhaust plate 760.

A substantially rectangular opening 777 is formed in the opposing wall 774. The packing 772 is attached to the opposing wall 774 along the edge that defines the opening 777. The second guide frame 770 is connected to the scroll compressor 200C and the cooler 300B so that the packing 772 surrounds the downstream ends of the two flow paths of the cooling air described with reference to FIG.

FIG. 14 is a schematic perspective view of the air compressor 100G. The cooling device 810 has been removed from the air compression device 100G shown in FIG. The air compressor 100G will be described with reference to FIGS. 12B to 14.

As shown in FIG. 14, an exhaust port 769 is formed in the exhaust plate 760. The exhaust port 769 extends in the horizontal direction. A downstream edge 775 (see FIG. 13) of the second guide frame 770 surrounds the exhaust port 769.

As shown in FIG. 12B, the cooling device 810 includes a meandering pipe line 811 into which compressed air flows. The pipe line 811 extends substantially straight in the horizontal direction and bends repeatedly in the vertical direction.

The exhaust port 769 (see FIG. 14) opens toward the extended region of the pipe line 811 (see FIG. 12B). Therefore, the pipe line 811 is exhausted through the opening 777 (see FIG. 13) of the second guide frame 770 (see FIG. 13) and the exhaust port 769 (see FIG. 14) of the exhaust plate 760 (see FIG. 14). Exposed to the cooled air. As a result, the compressed air flowing along the meandering pipe 811 is effectively cooled.

<Eleventh embodiment>
A pipe member having low rigidity is suitable in an environment where vibration occurs. However, if there is a strong air flow that circulates within the housing of the air compressor, the flexible tube member will swing, so the designer may select a tube member with high stiffness. The exhaust principle described in connection with the tenth embodiment does not create a strong air flow that circulates within the housing of the air compressor, so the designer utilizes a tube member that is at least partially flexible. May be. In the eleventh embodiment, an exemplary frame structure that guides compressed air using a flexible resin tube will be described.

FIG. 15 is a schematic perspective view of the air compressor 100G. The air compressor 100G will be described with reference to FIGS. 12B and 15.

15, the air compression device 100G includes a resin pipe 140. The resin pipe 140 is connected to the check valve 340 of the cooler 300B and the meandering pipe 811 (see FIG. 12B) of the cooling device 810 (see FIG. 12B). Therefore, the compressed air is guided from the cooler 300 B to the cooling device 810 by the resin tube 140. The resin tube 140 may be formed of polytetrafluoroethylene or other suitable heat resistant resin. The resin tube 140 is extended outside the region where the cooling air flows. Therefore, the resin tube 140 is not easily shaken by the cooling air. The principle of the present embodiment is not limited to a specific material used for the resin tube 140.

Designers can design various air compression devices according to the design principles described in relation to the various embodiments described above. Some of the various features described in connection with one of the various embodiments described above may be applied to the air compression apparatus described in connection with another other embodiment.

[Outline of the embodiment]
Here, the embodiment will be outlined.

According to the above configuration, the compressed air flows into the internal space of the cooler. Since the first cavity forming surface of the cooler and the second cavity forming surface of the compressor form a cooling duct that allows the flow of cooling air, a large space is required to secure a space for cooling the cooler and the compressor. Absent. Since both the first fin provided on the first cavity forming surface and the second fin provided on the second cavity forming surface protrude into the cooling duct, the first fin is forced by the cooling air supplied to the cooling duct. And efficiently cooled. Since the first fin and the second fin are cooled by the cooling air flowing in the common cooling duct, the designer does not have to provide the air compressor with a complicated flow path of the cooling air.

In the above configuration, the first cavity forming surface and the second cavity forming surface may be arranged at positions facing each other. That is, this air compression apparatus includes a compressor that generates compressed air and a cooler that forms an internal space into which the compressed air flows. The cooler includes a first cavity forming surface located at a portion facing the compressor, and a first fin provided on the first cavity forming surface. The compressor includes a second cavity forming surface facing the first cavity forming surface of the cooler, and a second fin provided on the second cavity forming surface. The first cavity forming surface and the second cavity forming surface form a cooling duct that allows a flow of cooling air that takes heat from the compressor and the cooler. The first fin and the second fin protrude into the cooling duct.

According to the above configuration, since the first cavity forming surface and the second cavity forming surface are disposed at positions facing each other, at least two of the cooling ducts are formed by the first cavity forming surface and the second cavity forming surface. Side surfaces can be configured, and this cooling duct can be configured easily.

In the above-described configuration, the air compression device may further include a partition wall disposed between the first fin and the second fin. The partition wall may partition the cooling air flow space in the cooling duct into a first flow space from which the first fin protrudes and a second flow space from which the second fin protrudes.

According to the above configuration, since the partition wall is disposed between the first fin and the second fin, the cooling air in the cooling duct is rectified. Therefore, since the flow resistance of the cooling air in the cooling duct can be reduced, the compressed air and the compressor in the cooler are efficiently cooled.

In the above configuration, the partition wall may have a lower thermal conductivity than the first fin and the second fin.

According to the above configuration, since the partition wall has a lower thermal conductivity than the first fin and the second fin, the amount of heat passing between the compressor and the cooler is reduced.

In the above configuration, the air compression device may further include a blower that generates the cooling air and an upstream guide portion that guides the cooling air to the cooling duct.

According to the above configuration, the upstream guide unit guides the cooling air generated by the blower to the cooling duct, so that the compressed air and the compressor in the cooler are efficiently cooled.

In the above configuration, the compressor may be a scroll compressor having a fixed scroll and a movable scroll that generates the compressed air in cooperation with the fixed scroll. The scroll compressor may define a cooling flow path for cooling the movable scroll. The fixed scroll and the movable scroll may be disposed between the cooling duct and the cooling flow path. The upstream guide portion may include a first guide frame that surrounds an upstream end of the cooling duct and an upstream end of the cooling flow path.

According to the above configuration, since the upstream guide portion includes the first guide frame that surrounds the upstream end of the cooling duct and the upstream end of the cooling flow path, the cooling air generated by the blower flows into the cooling duct and the cooling flow path. be introduced. Since the fixed scroll and the movable scroll are disposed between the cooling duct and the cooling flow path, the compressed air, the fixed scroll, and the movable scroll in the cooler are efficiently cooled.

In the above-described configuration, the air compressor is disposed between a casing formed with an exhaust port through which the cooling air is exhausted, the exhaust port and the scroll compressor, and a downstream end of the cooling duct and the cooling flow. And a second guide frame that guides the cooling air exhausted from the downstream end of the passage to the exhaust port. The second guide frame may include a packing that surrounds the cooling duct and the downstream end of the cooling flow path, and a downstream edge that surrounds the exhaust port.

According to the above configuration, the packing of the second guide frame surrounds the downstream end of the cooling duct and the downstream end of the cooling flow path, and the downstream edge of the second guide frame surrounds the exhaust port. The air is efficiently exhausted from the housing.

In the above configuration, the housing may include a first wall and a second wall opposite to the first wall. The blower and the first guide frame may be disposed between the first wall and the scroll compressor. The second guide frame may be attached to the second wall.

According to the above configuration, since the blower and the first guide frame are disposed between the first wall and the scroll compressor, and the second guide frame is attached to the second wall, the cooling generated by the blower. Air is efficiently exhausted from the exhaust port through the first guide frame, the cooling duct, the cooling flow path, and the second guide frame.

In the above configuration, the air compressor is at least partially capable of guiding the compressed air from the cooler including a pipe line exposed to the cooling air exhausted from the exhaust port and the cooler to the pipe line. And a flexible guide tube.

According to the above configuration, since the guide tube is at least partially flexible, the guide tube can be deformed according to the vibration generated in the air compression device. It becomes difficult to give a destructive load to the part connected to the.

The above-described air compressor can effectively cool both the cooler and the compressor without requiring a complicated flow path of the cooling air.

Claims

A compressor that generates compressed air;
A cooler that forms an internal space into which the compressed air flows, and
The cooler includes a first cavity forming surface provided with a first fin,
The compressor includes a second cavity forming surface provided with a second fin,
The first cavity forming surface and the second cavity forming surface form a cooling duct that allows a flow of cooling air that takes heat from the compressor and the cooler,
The first fin and the second fin protrude into the cooling duct.
The air compressing device according to claim 1, wherein the first cavity forming surface and the second cavity forming surface are arranged at positions facing each other.
A partition wall disposed between the first fin and the second fin;
The partition wall partitions the flow space of the cooling air in the cooling duct into a first flow space from which the first fin protrudes and a second flow space from which the second fin protrudes. The air compressor described.
The air compressor according to claim 3, wherein the partition wall has a thermal conductivity lower than that of the first fin and the second fin.
A blower for generating the cooling air;
The air compressor according to any one of claims 1 to 4, further comprising an upstream guide portion that guides the cooling air to the cooling duct.
The compressor is a scroll compressor having a fixed scroll and a movable scroll that generates the compressed air in cooperation with the fixed scroll,
The scroll compressor defines a cooling flow path for cooling the movable scroll;
The fixed scroll and the movable scroll are arranged between the cooling duct and the cooling flow path,
The air compressor according to claim 5, wherein the upstream guide portion includes a first guide frame that surrounds an upstream end of the cooling duct and an upstream end of the cooling channel.
A housing formed with an exhaust port through which the cooling air is exhausted;
A second guide frame that is disposed between the exhaust port and the scroll compressor and guides the cooling air exhausted from the downstream end of the cooling duct and the downstream end of the cooling flow path to the exhaust port. Prepared,
The air compressor according to claim 6, wherein the second guide frame includes a packing that surrounds the cooling duct and the downstream end of the cooling flow path, and a downstream edge that surrounds the exhaust port.
The housing includes a first wall and a second wall opposite to the first wall,
The blower and the first guide frame are disposed between the first wall and the scroll compressor,
The air compression device according to claim 7, wherein the second guide frame is attached to the second wall.
A cooling device including a pipe line exposed to the cooling air exhausted from the exhaust port;
The air compression device according to claim 7, further comprising at least a partially flexible guide tube that guides the compressed air from the cooler to the pipe line.