US20170218935A1 - Housing upper part of a labyrinth piston compressor and method for cooling same, and labyrinth piston compressor - Google Patents

Housing upper part of a labyrinth piston compressor and method for cooling same, and labyrinth piston compressor Download PDF

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Publication number
US20170218935A1
US20170218935A1 US15/500,777 US201515500777A US2017218935A1 US 20170218935 A1 US20170218935 A1 US 20170218935A1 US 201515500777 A US201515500777 A US 201515500777A US 2017218935 A1 US2017218935 A1 US 2017218935A1
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United States
Prior art keywords
cylinder
interior
longitudinal axis
gas distribution
housing upper
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.)
Abandoned
Application number
US15/500,777
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English (en)
Inventor
Urs WEILENMANN
Benjamin REMBOLD
Andreas Allenspach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Burckhardt Compression AG
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Burckhardt Compression AG
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Filing date
Publication date
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Assigned to BURCKHARDT COMPRESSION AG reassignment BURCKHARDT COMPRESSION AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEILENMANN, URS, REMBOLD, Benjamin, ALLENSPACH, ANDREAS
Publication of US20170218935A1 publication Critical patent/US20170218935A1/en
Abandoned legal-status Critical Current

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    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1046—Combination of in- and outlet valve
    • 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
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F04B39/041—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod
    • F04B39/045—Labyrinth-sealing between piston and cylinder
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders

Definitions

  • the invention concerns a housing upper part of a labyrinth piston compressor according to the preamble of claim 1 .
  • the invention further concerns a labyrinth piston compressor comprising a housing upper part.
  • the invention moreover concerns a method for cooling a housing upper part of a labyrinth piston compressor according to claim 12 .
  • Labyrinth piston compressors are compressors for the compressing of fluids.
  • a piston is arranged in a cylinder such that a gap exists permanently between the envelope surface of the piston and the inner wall of the cylinder so that piston and cylinder do not touch each other. It is thereby accepted that a portion of the fluid will flow past the piston between the cylinder wall and the envelope surface. In order to keep such leakage low, the gap between cylinder wall and envelope surface is kept as small as possible.
  • Publication JP 2010209723 discloses such a labyrinth piston compressor with a housing upper part.
  • This labyrinth piston compressor has the drawback that a one-sided wear can occur on the piston, leading to an increased gap width and an increased leakage.
  • the problem which the invention proposes to solve is to configure a more advantageous housing upper part for a labyrinth piston compressor as well as a more advantageous labyrinth piston compressor and a more advantageous method for operating a labyrinth piston compressor with such a housing upper part.
  • This problem is solved with a housing upper part having the features of claim 1 .
  • the subclaims 2 to 9 concern further advantageous embodiments.
  • the problem is further solved with a labyrinth piston compressor comprising a housing upper part according to one of claims 1 to 9 .
  • the problem is further solved with a method for operating a housing upper part of a labyrinth piston compressor comprising the features of claim 13 .
  • Subclaims 14 to 16 concern further advantageous steps of the method.
  • a housing upper part of a labyrinth piston compressor comprising a cylinder barrel running in the direction of a longitudinal axis with a cylinder interior and a cylinder barrel exterior, wherein the cylinder barrel comprises at least one cylinder inlet opening or at least one cylinder outlet opening, which open into the cylinder interior, wherein a gas distribution housing at least partly encloses the cylinder barrel in the circumferential direction to the longitudinal axis so that a gas distribution interior is formed between the gas distribution housing and at least one part section of the cylinder barrel exterior of the cylinder barrel, wherein the part section is configured axially symmetrical in regard to the longitudinal axis, wherein the gas distribution interior is fluidically connected either via the cylinder inlet opening or the cylinder outlet opening to the cylinder interior, and wherein the gas distribution housing comprises either a gas inlet or a gas outlet which is fluidically connected to the gas distribution interior.
  • a method for cooling a housing upper part of a labyrinth piston compressor comprising a cylinder barrel running in the direction of a longitudinal axis with a cylinder interior and a cylinder barrel exterior, wherein an inlet fluid being compressed is drawn in through a cylinder inlet opening arranged on the cylinder barrel from a gas distribution interior into the cylinder interior, or wherein a compressed outlet fluid is discharged via a cylinder outlet opening arranged on the cylinder barrel from the cylinder interior into the gas distribution interior, and wherein part sections of the cylinder barrel exterior arranged opposite each other and axially symmetrical in regard to the longitudinal axis are swept by the same inlet fluid or outlet fluid.
  • a labyrinth piston compressor comprises at least a housing upper part and a housing lower part, and it comprises at least a crank shaft, a crosshead, a piston rod and a piston.
  • the housing upper part and the housing lower part are firmly joined together.
  • the crank shaft and the crosshead are arranged in the housing lower part, while the piston rod is connected to the crosshead.
  • the housing upper part comprises a cylinder barrel, the piston being arranged inside the cylinder interior of the cylinder barrel, and the piston being connected to the piston rod, while the piston is mounted so that it can move inside the cylinder interior in the direction of the longitudinal axis.
  • the labyrinth piston compressor furthermore comprises a spacer, which is arranged between the housing lower part and the housing upper part, while the spacer can also be part of the housing lower part or part of the housing upper part, or wherein the spacer can be integrated in the housing upper part or in the housing lower part.
  • the housing upper part for a labyrinth piston compressor has the advantage that the cylinder wall surrounding the piston of the labyrinth piston compressor has a substantially axially symmetrical temperature distribution in the circumferential direction to the longitudinal axis. That is, the cylinder wall in regions situated axially symmetrically opposite each other in regard to the longitudinal axis has the same or substantially the same temperature. This ensures that the cylinder barrel during the operation of the labyrinth piston compressor is not warped on one side due to the temperature acting there. As a result, the gap between the cylinder wall and the piston can be kept very small, since a temperature change of the cylinder barrel during operation will cause little or no warpage.
  • the small gap has the result that the labyrinth piston compressor according to the invention has very slight leakage.
  • the labyrinth piston compressor according to the invention furthermore has slight wear, enabling a long-term reliable and low-maintenance operation of the labyrinth piston compressor.
  • a gas distribution housing extending in the circumferential direction for 360° surrounds the cylinder wall on the outside, while either an inlet fluid being compressed or a compressed outlet fluid flows in this gas distribution interior formed by the gas distribution housing and the cylinder wall, with the result that the cylinder barrel exterior is swept by the same fluid in the circumferential direction, and the cylinder barrel exterior therefore has the same or substantially the same temperature in the circumferential direction.
  • the inlet fluid flowing into the labyrinth piston compressor and the outlet fluid flowing out from it is advantageously channeled in the housing upper part according to the invention so that the cylinder has the same or substantially the same temperature in the circumferential direction.
  • the cylinder barrel can have a higher or lower temperature for a section in the direction of the longitudinal axis, while in an especially advantageous configuration the cylinder has the same or substantially the same temperature in the circumferential direction.
  • the symmetrical or substantially symmetrical temperature distribution ensures that the cylinder barrel is not warped on one side due to the temperature. This makes it possible to keep the abrasion of the piston and the cylinder inner surface very low and to ensure that no wear on one side occurs during the operation of the labyrinth piston compressor, which might lead to increased leakage and possibly piston cracking.
  • Such a labyrinth piston compressor comprising the housing upper part according to the invention has the benefit of a higher efficiency, and/or that the fluid can be compressed to a greater pressure and/or the labyrinth piston compressor can be operated at lower speed of revolution.
  • the housing upper part or the labyrinth piston compressor disclosed in publication JP 2010209723 has highly different temperatures in the circumferential direction of the cylinder in the uncooled state, so that a heat warpage occurs on the cylinder during operation, resulting in the piston wearing down the cylinder wall on one side.
  • the housing upper part according to the invention is made from aluminum or an aluminum alloy.
  • Aluminum has significantly better low temperature properties than cast iron for example, such as gray cast iron.
  • a compressor with a cylinder made of aluminum is approved for an operating temperature down to ⁇ 160° C.
  • a cylinder of gray cast iron is only approved for an operating temperature down to ⁇ 40° C.
  • a labyrinth piston compressor comprising the housing upper part according to the invention made from aluminum or an aluminum alloy thus has the benefit that it can be used even at very low operating temperatures down to ⁇ 160° C., for example in the field of cryoengineering or low temperature engineering at temperatures lower than ⁇ 150° C., for example in the liquefaction of gases.
  • a housing upper part made of aluminum or an aluminum alloy furthermore has the benefit that its manufacture is cheaper than a housing upper part made from an iron alloy, such as gray cast iron.
  • FIG. 1 a longitudinal section through a first sample embodiment of a housing upper part of a labyrinth piston compressor along sectioning line A-A;
  • FIG. 2 a top view of the housing upper part of FIG. 1 ;
  • FIG. 3 a longitudinal section through a second sample embodiment of a housing upper part along sectioning line B-B;
  • FIG. 4 a top view of the housing upper part of FIG. 3 ;
  • FIG. 5 a perspective view of the housing upper part of FIG. 3 ;
  • FIG. 6 a longitudinal section of the second sample embodiment of the housing upper part along sectioning line C-C;
  • FIG. 7 a perspective view of a third sample embodiment of a housing upper part
  • FIG. 8 a longitudinal section through a fourth sample embodiment of a housing upper part
  • FIG. 9 a transverse section through the second sample embodiment along sectioning line D-D;
  • FIG. 10 a longitudinal section through a fifth sample embodiment of a housing upper part
  • FIG. 11 another longitudinal section through the fifth sample embodiment of the housing upper part
  • FIG. 12 a transverse section through the fifth sample embodiment along sectioning line E-E;
  • FIG. 13 a longitudinal section through a sixth sample embodiment of a housing upper part
  • FIG. 14 a transverse section through a seventh sample embodiment of a housing upper part.
  • FIG. 1 shows a partial cutout view of a labyrinth piston compressor 21 comprising, besides the components not shown, a housing upper part 1 , a spacer 22 , a piston 15 with a piston rod 16 , a seal 23 as well as a linear guide 24 .
  • the housing upper part 1 comprises a cylinder barrel 2 with a cylinder interior 2 a running in the direction of a longitudinal axis L.
  • the piston 15 is arranged inside the cylinder interior 2 a, and is mounted so that it can move together with the piston rod 16 in the direction of movement L 1 in the direction of the longitudinal axis L.
  • the piston 15 has on the envelope surface constituting a side surface 15 a fine grooves running in the circumferential direction, which are not shown in detail.
  • the cylinder barrel 2 comprises at least one cylinder inlet opening 4 , which opens into the cylinder interior 2 a. Furthermore, a cylinder outlet opening 6 is arranged at the end face of the cylinder interior 2 a. The cylinder inlet opening 4 and the cylinder outlet opening 6 are preferably spaced apart in the longitudinal direction L. In the sample embodiment of FIG. 1 , the cylinder outlet opening 6 is arranged only slightly higher than the cylinder inlet opening 4 .
  • the cylinder barrel 2 is surrounded by a gas distribution housing 9 a such that an interior 9 b extending in the circumferential direction for 360° is formed between the outside 2 e of the cylinder barrel 2 and the gas distribution housing 9 a.
  • the gas distribution housing 9 a has at least one single gas inlet opening 9 , and in the depicted sample embodiment it has two gas inlet openings 9 situated opposite each other in regard to the longitudinal direction L, through which the inlet fluid being compressed is drawn in from the outside. Between the interior 9 b and the cylinder inlet opening 4 there is arranged an inlet valve 5 , shown only schematically, which allows the gas to pass in the direction indicated by an arrow, and prevents a gas flow in the opposite direction. In the depicted sample embodiment there are two inlet valves 5 arranged symmetrically to the longitudinal direction L. The gas distribution housing 9 a has an entry opening 9 c for the valve 5 , in order to service or replace the valve 5 .
  • the entry opening 9 c is closed by a cover plate 19 .
  • an end part 8 at the end face.
  • the end part 8 comprises three cylinder outlet openings 6 , which are each followed by an outlet valve 7 shown schematically.
  • the outlet valves 7 allow the compressed outlet fluid or gas to pass in the direction indicated by an arrow, and prevent a gas flow in the opposite direction.
  • the end part 8 terminates in a gas outlet 10 .
  • a piston rod seal 23 In the housing upper part 1 there is furthermore arranged a piston rod seal 23 .
  • the labyrinth piston compressor 21 furthermore comprises in the depicted sample embodiment a spacer 22 with a standing foot 18 and a linear guide 24 .
  • the housing upper part 1 is connected by the spacer 22 to a housing lower part 25 , only suggested in the drawing.
  • the housing upper part 1 is fastened on the standing foot 18 .
  • the labyrinth piston compressor 21 comprises at the top a compression chamber 3 , while at the bottom there is arranged in the cylinder wall 2 d an inlet and outlet 2 f, which forms a fluidic connection between the lower cylinder interior 3 c and the interior 9 b of the gas distribution housing 9 a.
  • the cylinder inlet openings 4 are arranged at the same height in the direction of the longitudinal axis L and mutually spaced apart in the circumferential direction by 180°.
  • This arrangement has the benefit that fluid flowing in through the gas inlet 9 flows into the interior 9 b, thereby flowing around the cylinder barrel exterior 2 e before the gas flows through the inlet valve 5 into the cylinder inlet opening 4 .
  • the cylinder barrel exterior 2 e therefore has the same or roughly the same temperature in the circumferential direction.
  • the temperature of the housing wall of the cylinder barrel 2 may rise in the direction of travel of the longitudinal axis L toward the cylinder outlet opening 6 , while the cylinder barrel 2 has the same or roughly the same temperature in the circumferential direction.
  • the cylinder barrel 2 has a symmetrical or approximately symmetrical temperature distribution radially to the longitudinal axis L, which means that little or no heat warpage occurs in the radial direction on the cylinder barrel 2 .
  • the efficiency of the labyrinth piston compressor is increased.
  • FIG. 2 shows a top view of the housing upper part 21 depicted in FIG. 1 .
  • the gas distribution housing 9 a has one cover plate 19 each at left and right.
  • FIG. 3 shows in a longitudinal section a further sample embodiment of a housing upper part 1 , which in contrast with the sample embodiment depicted in FIG. 1 is designed for two compression chambers, a first compression chamber 3 a as well as a second compression chamber 3 b.
  • the spacer 22 can also be part of the housing upper part 1 .
  • the region above the piston 15 is configured identically to that of FIG. 1 .
  • the cylinder opening 4 a with inlet valve 5 a is represented, which open into the first compression chamber 3 a, as well as the cylinder outlet opening 6 a as well as the outlet valve 7 a, which are arranged between the first compression chamber 3 a and the gas outlet 10 a.
  • the cylinder interior 2 a beneath the piston 15 forms a second compression chamber 3 b.
  • the cylinder opening 4 b with inlet valve 5 b is represented, opening into the second compression chamber 3 b, as well as a cylinder outlet opening 6 b and an outlet valve 7 b, which are arranged between the second compression chamber 3 b and a gas conducting housing 10 c.
  • FIG. 4 of the housing upper part 1 of FIG. 3 shows the gas outlet 10 a of the first compression chamber 3 a, and the outlet valves 7 a. Furthermore, the gas inlet 9 is shown, being arranged at the side in the gas distribution housing 9 a.
  • FIG. 5 shows the housing upper part 1 of FIGS. 3 and 4 in perspective view, the gas inlet 9 being particularly visible, as well as the gas outlet 10 a of the first compression chamber 3 a and the gas outlet 10 b of the second compression chamber 3 b at top and bottom.
  • FIG. 6 shows a longitudinal section along sectioning line C-C of the housing upper part 1 represented in FIGS. 3, 4 and 5 .
  • FIG. 9 shows a transverse section along sectioning line D-D of the housing upper part 1 represented in FIGS. 3 to 6 , where in contrast with FIGS. 3 and 6 the piston 15 is not represented in FIG. 9 , and only the valve seat 5 b of the outlet valves 5 is shown.
  • the gas distribution housing 9 a is configured such that it forms an interior 9 b running around the cylinder barrel exterior 2 e by an angle ⁇ of 360°, while the gas inlet 9 opens into this interior 9 b.
  • FIG. 6 shows at top the end face end part 8 , in which the cylinder outlet opening 6 a, the outlet valve 7 a following it in the flow direction, and the gas outlet 10 a following it are visible.
  • FIG. 6 shows at bottom the gas conducting housing 10 c, whose interior 10 d opens into the gas outlet 10 b, while the second compression chamber 3 b is fluidically connected via the cylinder outlet opening 6 b, the outlet valve 7 b and the interior 10 d to the gas outlet 10 b.
  • the sample embodiments represented in FIGS. 1 to 6 have cylinder outlet openings 6 , 6 a, 6 b which are each arranged at the end face 2 b, 2 c of the cylinder interior 2 . Since the gas compressed in the compression chamber 3 a, 3 b is also heated during the compression, the compressed outlet gas emerging through the cylinder outlet openings 6 , 6 a, 6 b has a higher temperature than the inlet gas being compressed and flowing into the cylinder interior 2 . Because the outlet gas is not taken through the cylinder wall 2 d, but instead diverted via the end face 2 b, 2 c of the cylinder interior 2 , the cylinder wall 2 d is less strongly locally heated, which means that a possible heat warpage of the cylinder barrel 2 is substantially reduced.
  • the diverting of the outlet gas at the end face furthermore has the benefit that the diverting occurs at the end of the cylinder interior 2 a or outside of the cylinder interior 2 a, so that the warmer emerging gas can only slightly heat the cylinder wall 2 d, if at all.
  • the cylinder interior 2 a has an interior length L 2 in the direction of the longitudinal axis L which is smaller than the length of the gas distribution interior 9 b, as is represented in FIG. 6 .
  • This configuration has the benefit that the inlet gas flowing in via the gas inlet 9 also cools the outside 2 e of the cylinder barrel 2 behind which the end face end part 8 is arranged, so that this also is cooled, resulting in reduced temperature differences in the cylinder barrel 2 , and thus a possible heat warpage of the cylinder barrel 2 is reduced.
  • the sample embodiments represented in FIGS. 1 to 6 could also be configured such that the inlet valves 5 and the outlet valves 7 change places, so that the inlet fluid flows through the gas outlet 10 and the inlet valve 5 into the compression chamber 3 , and the outlet fluid flows from the compression chamber 3 via the cylinder inlet opening 4 and the outlet valve 7 into the gas chamber 9 b.
  • the outlet fluid sweeps the cylinder barrel exterior 2 e and exits through the opening 9 , while the cylinder barrel exterior 2 e has a uniform temperature distribution.
  • FIG. 7 shows another sample embodiment of a housing upper part 1 .
  • a fluidically connected connection channel 17 Between the upper gas outlet 10 a and the lower situated gas conducting housing 10 c is arranged a fluidically connected connection channel 17 , so that a fluidic gas connection is formed via an opening 17 a between the gas outlet 10 a and the gas conducting housing 10 c.
  • the gas outlet 10 a is closed gas-tight by a cover plate 20 , only partly represented, so that all of the compressed outlet gas flowing through the outlet valve 7 a is taken to the gas conducting housing 10 c and then to the gas outlet 10 b.
  • the sample embodiment of a housing upper part 1 shown in FIG. 7 thus has the benefit of having a single gas inlet 9 and a single gas outlet 10 b.
  • FIG. 8 shows in a longitudinal section a fourth sample embodiment of a housing upper part 1 .
  • the piston 15 belonging to the labyrinth piston compressor 21 with its piston rod 16 is not shown.
  • the cylinder outlet openings 6 are likewise arranged in the cylinder wall 2 d of the cylinder barrel 2 .
  • the end part 8 at the end face is configured such that a fluidic channel is formed between the compression chamber 3 and the cylinder outlet openings 6 .
  • Each of the cylinder outlet openings 6 is then associated with an outlet valve 7 , which opens into a gas distribution interior 10 f.
  • An entry opening 10 e for the outlet valve 7 is closed by a cover plate 19 .
  • the gas distribution interior 10 f has a gas outlet 10 a at the rear side, so that the gas outlet 10 a is only shown by broken lines. Otherwise, the housing upper part 1 is configured substantially the same as in FIG. 1 .
  • FIGS. 10 to 12 show a fifth sample embodiment of a housing upper part 1 .
  • FIG. 10 shows in a longitudinal section a housing upper part 1 with a first and a second compression chamber 3 a, 3 b.
  • Two cylinder openings 4 a open into the first compression chamber 3 a.
  • One cylinder opening 4 b opens into the second compression chamber 3 b.
  • the entry openings 9 c for the valves 5 a, 5 b are closed with cover plates 19 .
  • a gas inlet 9 opens into the gas distribution interior 9 b.
  • FIG. 10 shows in a longitudinal section a housing upper part 1 with a first and a second compression chamber 3 a, 3 b.
  • Two cylinder openings 4 a open into the first compression chamber 3 a.
  • One cylinder opening 4 b opens into the second compression chamber 3 b.
  • FIG. 11 shows in a longitudinal section a housing upper part 1 with a first and a second compression chamber 3 a, 3 b.
  • Two cylinder outlet openings 6 a open from the first compression chamber 3 a into the gas distribution interior 9 b.
  • a cylinder outlet opening 6 b opens from the second compression chamber 3 b into the gas distribution interior 9 b.
  • the entry openings 10 e for the valves 7 a, 7 b are closed with cover plates 19 .
  • a gas outlet 10 exits from the gas distribution interior 9 b.
  • FIG. 12 shows a section through FIGS.
  • the gas distribution housings 9 a are configured such that the gas distribution interior 9 b only lies against the cylinder barrel exterior 2 e along one part section 2 g.
  • the part sections 2 g run axially symmetrically in regard to the longitudinal axis L, which has the result that part sections 2 g of the cylinder barrel exterior 2 e lying opposite each other in relation to the longitudinal axis L have the same or roughly the same temperature, as these oppositely lying part sections 2 g are swept by the same gas, either the inlet gas being compressed or the compressed outlet gas.
  • the part section 2 g extends in the circumferential direction U for at least 20° or at least 30°.
  • the gas distribution interiors 9 b run perpendicular to each other in the cross section shown.
  • the gas distribution interiors 9 b may also run at an acute or an obtuse angle to each other.
  • the embodiment represented in FIG. 14 has the advantage that the housing upper part 1 requires less space, so that several labyrinth piston compressors 21 can be arranged closer alongside each other.
  • FIG. 13 shows in a longitudinal section a sixth sample embodiment.
  • the housing upper part 21 represented in FIG. 13 has valve seats 5 a, 5 b and valves 5 situated therein only on the left side of the gas distribution interior 9 b, while no valves are arranged in the depicted right side of the gas distribution interior 9 b.
  • the housing upper parts 1 represented in FIGS. 3 and 13 are the same in configuration, so that further details can be seen in particular from FIGS. 4 and 9 .
  • the housing upper part 1 has at least one cylinder inlet opening 4 and at least one cylinder outlet opening 6 .
  • a plurality of cylinder inlet openings 4 spaced apart in the circumferential direction are arranged in the cylinder wall 2 d in the circumferential direction to the longitudinal axis L.
  • the cylinder inlet openings 4 are regularly spaced apart in the circumferential direction, there being arranged preferably two, three or four cylinder inlet openings 4 in the circumferential direction.
  • a plurality of cylinder outlet openings 6 spaced apart in the circumferential direction could be arranged in the cylinder wall 2 d in the circumferential direction to the longitudinal axis L.
  • the cylinder outlet openings 6 are regularly spaced apart in the circumferential direction, there being arranged preferably two, three or four cylinder outlet openings 6 in the circumferential direction.
  • the cylinder outlet openings 6 are preferably arranged at the end face of the cylinder interior 2 a, while the cylinder outlet openings 6 preferably run in the direction of the longitudinal axis L.
  • there can be arranged a single cylinder outlet opening 6 but preferably there are two, three or four cylinder outlet openings 6 .
  • the labyrinth piston compressor 21 comprises a cylinder barrel 2 running in the direction of a longitudinal axis L with a cylinder interior 2 a and a cylinder barrel exterior 2 e, while a piston 15 is mounted in the cylinder interior 2 a so as to be able to move in the direction of the longitudinal axis L and forms a compression chamber 3 , the gas being compressed being drawn in through a cylinder inlet opening 4 passing through the cylinder barrel 2 .
  • the method for cooling the housing 1 of the labyrinth piston compressor 21 occurs in that an inlet fluid being compressed is drawn in through a cylinder inlet opening 4 arranged on the cylinder barrel 2 from a gas distribution interior 9 b into the cylinder interior 2 a, or wherein a compressed outlet fluid is discharged via a cylinder outlet opening 6 arranged on the cylinder barrel 2 from the cylinder interior 2 a into the gas distribution interior 9 b, and wherein part sections 2 g of the cylinder barrel exterior 2 e arranged opposite each other and axially symmetrical in regard to the longitudinal axis L are swept by the same inlet fluid or outlet fluid.
  • This has the result that oppositely situated part sections 2 g have the same or substantially the same temperature.
  • the part section 2 g runs along an angle of 360°, so that the cylinder barrel exterior 2 e is swept by the inlet fluid being compressed or the compressed outlet fluid by an angle ⁇ of 360 degrees in the circumferential direction of the longitudinal axis L.
  • the cylinder barrel exterior 2 e comprises in the circumferential direction of the longitudinal axis L at least two part sections 2 g spaced apart in the circumferential direction, and extending in the circumferential direction for an angle of at least 30° each.
  • the outlet fluid is ejected through a cylinder outlet opening 6 arranged at the end face of the cylinder interior 2 a, the cylinder inlet opening 4 and the cylinder outlet opening 6 being spaced apart in the direction of the longitudinal axis L, in order to produce a temperature gradient on the cylinder barrel exterior 2 e in the direction of the longitudinal axis L.
  • the method occurs in that the fluid being compressed is drawn in through a plurality of cylinder inlet openings 4 arranged at the same height in regard to the longitudinal axis L in the cylinder barrel 2 distributed in the circumferential direction in order to generate the same temperature in the circumferential direction.
  • the method occurs such that the cylinder barrel 2 comprises a cylinder barrel exterior 2 e, and the outside 2 e is swept at least along the interior length L 2 by the fluid being compressed in order to cool the cylinder barrel 2 along the interior length L 2 before the fluid being compressed flows into the cylinder interior 2 a.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
US15/500,777 2014-07-31 2015-07-28 Housing upper part of a labyrinth piston compressor and method for cooling same, and labyrinth piston compressor Abandoned US20170218935A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP14179372 2014-07-31
EP14179372.9 2014-07-31
EP14179721 2014-08-04
EP14179721.7 2014-08-04
PCT/EP2015/067233 WO2016016222A1 (de) 2014-07-31 2015-07-28 Gehäuseoberteil eines labyrinthkolbenkompressors und verfahren zum kühlen desselben sowie labyrinthkolbenkompressor

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US20170218935A1 true US20170218935A1 (en) 2017-08-03

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US15/500,777 Abandoned US20170218935A1 (en) 2014-07-31 2015-07-28 Housing upper part of a labyrinth piston compressor and method for cooling same, and labyrinth piston compressor

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US (1) US20170218935A1 (ja)
EP (1) EP3175114B1 (ja)
JP (1) JP6483235B2 (ja)
CN (1) CN106536929B (ja)
WO (1) WO2016016222A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109763955A (zh) * 2019-03-29 2019-05-17 北京航空航天大学 一种自风冷活塞式压缩机
US20210404454A1 (en) * 2018-09-24 2021-12-30 Burckhardt Compression Ag Labyrinth piston compressor

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JP6483235B2 (ja) 2019-03-13
EP3175114A1 (de) 2017-06-07
CN106536929A (zh) 2017-03-22
WO2016016222A9 (de) 2016-03-31
CN106536929B (zh) 2019-03-15
WO2016016222A1 (de) 2016-02-04
EP3175114B1 (de) 2018-09-12
JP2017522499A (ja) 2017-08-10

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