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 PDFInfo
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- 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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- Prior art keywords
- cylinder
- interior
- longitudinal axis
- gas distribution
- housing upper
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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
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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
- F04B39/04—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
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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
- F04B39/06—Cooling; Heating; Prevention of freezing
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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
- 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.
Abstract
A housing upper part for a labyrinth piston compressor having a cylinder barrel running in the direction of a longitudinal axis, with a cylinder interior and a cylinder barrel exterior. The cylinder barrel has at least one-cylinder inlet opening or cylinder outlet opening which open into the cylinder interior. Wherein a gas distribution housing at least partially encloses the cylinder barrel in the circumferential direction about the longitudinal axis (L) forming between the gas distribution housing and at least one-part section of the cylinder barrel exterior, a gas distribution interior. Wherein the part section is axisymmetric about the longitudinal axis, the gas distribution interior is fluidically connected to the cylinder interior either via the cylinder inlet opening or the cylinder outlet opening, and the gas distribution housing has either a gas inlet or a gas outlet which is fluidically connected to the gas distribution interior.
Description
- 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. Thesubclaims 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 ofclaims 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. - The problem is solved in particular with 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.
- The problem is further solved in particular with 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. In one advantageous configuration, 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 according to the invention 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. Advantageously, 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.
- In an especially advantageous configuration, 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. This ensures that the cylinder barrel during the operation of the labyrinth piston compressor is not warped on one side on account of the temperature working there and the resulting material expansions of certain areas of the cylinder barrel. 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.
- In another possible configuration, 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. In contrast with the housing upper part according to the invention, 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.
- In an especially advantageous configuration, 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. Thus, a compressor with a cylinder made of aluminum is approved for an operating temperature down to −160° C., while 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.
- The drawings used to explain the sample embodiments show:
-
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 ofFIG. 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 ofFIG. 3 ; -
FIG. 5 a perspective view of the housing upper part ofFIG. 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. - Essentially the same parts in the drawings are provided with the same reference numbers.
-
FIG. 1 shows a partial cutout view of alabyrinth piston compressor 21 comprising, besides the components not shown, a housingupper part 1, aspacer 22, apiston 15 with apiston rod 16, aseal 23 as well as alinear guide 24. The housingupper part 1 comprises acylinder barrel 2 with acylinder interior 2 a running in the direction of a longitudinal axis L. Thepiston 15 is arranged inside thecylinder interior 2 a, and is mounted so that it can move together with thepiston rod 16 in the direction of movement L1 in the direction of the longitudinal axis L. Thepiston 15 has on the envelope surface constituting aside surface 15 a fine grooves running in the circumferential direction, which are not shown in detail. - The
cylinder barrel 2 comprises at least onecylinder inlet opening 4, which opens into thecylinder interior 2 a. Furthermore, acylinder outlet opening 6 is arranged at the end face of thecylinder interior 2 a. The cylinder inlet opening 4 and thecylinder outlet opening 6 are preferably spaced apart in the longitudinal direction L. In the sample embodiment ofFIG. 1 , thecylinder outlet opening 6 is arranged only slightly higher than thecylinder inlet opening 4. Thecylinder barrel 2 is surrounded by agas 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 thecylinder barrel 2 and thegas distribution housing 9 a. Thegas distribution housing 9 a has at least one singlegas inlet opening 9, and in the depicted sample embodiment it has twogas 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 theinterior 9 b and thecylinder inlet opening 4 there is arranged aninlet 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 twoinlet valves 5 arranged symmetrically to the longitudinal direction L. Thegas distribution housing 9 a has anentry opening 9 c for thevalve 5, in order to service or replace thevalve 5. Theentry opening 9 c is closed by acover plate 19. On the upper end face of thecylinder 2 there is arranged anend part 8 at the end face. Theend part 8 comprises threecylinder outlet openings 6, which are each followed by anoutlet valve 7 shown schematically. Theoutlet 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. Theend part 8 terminates in agas outlet 10. In the housingupper part 1 there is furthermore arranged apiston rod seal 23. Thelabyrinth piston compressor 21 furthermore comprises in the depicted sample embodiment aspacer 22 with a standingfoot 18 and alinear guide 24. The housingupper part 1 is connected by thespacer 22 to a housinglower part 25, only suggested in the drawing. The housingupper part 1 is fastened on the standingfoot 18. Thelabyrinth piston compressor 21 comprises at the top acompression chamber 3, while at the bottom there is arranged in thecylinder wall 2 d an inlet andoutlet 2 f, which forms a fluidic connection between thelower cylinder interior 3 c and theinterior 9 b of thegas distribution housing 9 a. In the depicted sample embodiment, thecylinder 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 thegas inlet 9 flows into theinterior 9 b, thereby flowing around thecylinder barrel exterior 2 e before the gas flows through theinlet valve 5 into thecylinder inlet opening 4. Thecylinder barrel exterior 2 e therefore has the same or roughly the same temperature in the circumferential direction. On account of the compression of the gas in thecompression chamber 3, the temperature of the housing wall of thecylinder barrel 2 may rise in the direction of travel of the longitudinal axis L toward thecylinder outlet opening 6, while thecylinder barrel 2 has the same or roughly the same temperature in the circumferential direction. Thus, thecylinder 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 thecylinder barrel 2. This produces the advantage that the piston does not become worn down on one side. This increases the sealing action of thepiston 15, or allows the gas in thecompression chamber 3 to be compressed to a greater pressure. Furthermore, the efficiency of the labyrinth piston compressor is increased. -
FIG. 2 shows a top view of the housingupper part 21 depicted inFIG. 1 . At the end faceend part 8 one notices thegas outlet 10 as well as theoutlet valves 7. Thegas distribution housing 9 a has onecover plate 19 each at left and right. -
FIG. 3 shows in a longitudinal section a further sample embodiment of a housingupper part 1, which in contrast with the sample embodiment depicted inFIG. 1 is designed for two compression chambers, afirst compression chamber 3 a as well as asecond compression chamber 3 b. As can be seen inFIG. 3 , thespacer 22 can also be part of the housingupper part 1. In the view represented, the region above thepiston 15 is configured identically to that ofFIG. 1 . In the region above thepiston 15, thecylinder opening 4 a withinlet valve 5 a is represented, which open into thefirst compression chamber 3 a, as well as the cylinder outlet opening 6 a as well as theoutlet valve 7 a, which are arranged between thefirst compression chamber 3 a and thegas outlet 10 a. The cylinder interior 2 a beneath thepiston 15 forms asecond compression chamber 3 b. In the region beneath thepiston 15 thecylinder opening 4 b withinlet valve 5 b is represented, opening into thesecond compression chamber 3 b, as well as acylinder outlet opening 6 b and anoutlet valve 7 b, which are arranged between thesecond compression chamber 3 b and agas conducting housing 10 c. - The top view depicted in
FIG. 4 of the housingupper part 1 ofFIG. 3 shows thegas outlet 10 a of thefirst compression chamber 3 a, and theoutlet valves 7 a. Furthermore, thegas inlet 9 is shown, being arranged at the side in thegas distribution housing 9 a. -
FIG. 5 shows the housingupper part 1 ofFIGS. 3 and 4 in perspective view, thegas inlet 9 being particularly visible, as well as thegas outlet 10 a of thefirst compression chamber 3 a and thegas outlet 10 b of thesecond compression chamber 3 b at top and bottom. -
FIG. 6 shows a longitudinal section along sectioning line C-C of the housingupper part 1 represented inFIGS. 3, 4 and 5 .FIG. 9 shows a transverse section along sectioning line D-D of the housingupper part 1 represented inFIGS. 3 to 6 , where in contrast withFIGS. 3 and 6 thepiston 15 is not represented inFIG. 9 , and only thevalve seat 5 b of theoutlet valves 5 is shown. As can be seen fromFIG. 9 , thegas distribution housing 9 a is configured such that it forms an interior 9 b running around thecylinder barrel exterior 2 e by an angle α of 360°, while thegas inlet 9 opens into this interior 9 b. This arrangement of thegas inlet 9 has the benefit that the gas drawn in first flows along thecylinder barrel exterior 2 e and then is drawn in through theinlet valves second compression chamber cylinder barrel exterior 2 e is constantly cooled, preferably as represented inFIG. 6 , along the entire height L2 of thecompression chamber 3, which comprises the first and thesecond compression chamber FIG. 6 shows at top the end faceend part 8, in which the cylinder outlet opening 6 a, theoutlet valve 7 a following it in the flow direction, and thegas outlet 10 a following it are visible.FIG. 6 shows at bottom thegas conducting housing 10 c, whose interior 10 d opens into thegas outlet 10 b, while thesecond compression chamber 3 b is fluidically connected via thecylinder outlet opening 6 b, theoutlet valve 7 b and the interior 10 d to thegas outlet 10 b. - The sample embodiments represented in
FIGS. 1 to 6 havecylinder outlet openings end face cylinder interior 2. Since the gas compressed in thecompression chamber cylinder outlet openings cylinder interior 2. Because the outlet gas is not taken through thecylinder wall 2 d, but instead diverted via theend face cylinder interior 2, thecylinder wall 2 d is less strongly locally heated, which means that a possible heat warpage of thecylinder 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 thecylinder wall 2 d, if at all. Preferably, the cylinder interior 2 a has an interior length L2 in the direction of the longitudinal axis L which is smaller than the length of thegas distribution interior 9 b, as is represented inFIG. 6 . This configuration has the benefit that the inlet gas flowing in via thegas inlet 9 also cools the outside 2 e of thecylinder barrel 2 behind which the end faceend part 8 is arranged, so that this also is cooled, resulting in reduced temperature differences in thecylinder barrel 2, and thus a possible heat warpage of thecylinder barrel 2 is reduced. - The sample embodiments represented in
FIGS. 1 to 6 could also be configured such that theinlet valves 5 and theoutlet valves 7 change places, so that the inlet fluid flows through thegas outlet 10 and theinlet valve 5 into thecompression chamber 3, and the outlet fluid flows from thecompression chamber 3 via thecylinder inlet opening 4 and theoutlet valve 7 into thegas chamber 9 b. In this case, the outlet fluid sweeps thecylinder barrel exterior 2 e and exits through theopening 9, while thecylinder barrel exterior 2 e has a uniform temperature distribution. -
FIG. 7 shows another sample embodiment of a housingupper part 1. Between theupper gas outlet 10 a and the lower situatedgas conducting housing 10 c is arranged a fluidicallyconnected connection channel 17, so that a fluidic gas connection is formed via anopening 17 a between thegas outlet 10 a and thegas conducting housing 10 c. Thegas outlet 10 a is closed gas-tight by acover plate 20, only partly represented, so that all of the compressed outlet gas flowing through theoutlet valve 7 a is taken to thegas conducting housing 10 c and then to thegas outlet 10 b. The sample embodiment of a housingupper part 1 shown inFIG. 7 thus has the benefit of having asingle gas inlet 9 and asingle gas outlet 10 b. -
FIG. 8 shows in a longitudinal section a fourth sample embodiment of a housingupper part 1. In this sample embodiment, thepiston 15 belonging to thelabyrinth piston compressor 21 with itspiston rod 16 is not shown. In contrast to the sample embodiment represented inFIG. 1 , in the sample embodiment ofFIG. 8 thecylinder outlet openings 6 are likewise arranged in thecylinder wall 2 d of thecylinder barrel 2. Theend part 8 at the end face is configured such that a fluidic channel is formed between thecompression chamber 3 and thecylinder outlet openings 6. Each of thecylinder outlet openings 6 is then associated with anoutlet valve 7, which opens into agas distribution interior 10 f. An entry opening 10 e for theoutlet valve 7 is closed by acover plate 19. Thegas distribution interior 10 f has agas outlet 10 a at the rear side, so that thegas outlet 10 a is only shown by broken lines. Otherwise, the housingupper part 1 is configured substantially the same as inFIG. 1 . -
FIGS. 10 to 12 show a fifth sample embodiment of a housingupper part 1.FIG. 10 shows in a longitudinal section a housingupper part 1 with a first and asecond compression chamber cylinder openings 4 a open into thefirst compression chamber 3 a. Onecylinder opening 4 b opens into thesecond compression chamber 3 b. Theentry openings 9 c for thevalves cover plates 19. Agas inlet 9 opens into thegas distribution interior 9 b. Aconnection channel 17 shown only schematically conveys the inlet fluid being compressed, entering via thegas inlet 9, to thegas distribution interior 9 b situated at the left.FIG. 11 shows in a longitudinal section a housingupper part 1 with a first and asecond compression chamber cylinder outlet openings 6 a open from thefirst compression chamber 3 a into thegas distribution interior 9 b. Acylinder outlet opening 6 b opens from thesecond compression chamber 3 b into thegas distribution interior 9 b. Theentry openings 10 e for thevalves cover plates 19. Agas outlet 10 exits from thegas distribution interior 9 b. Aconnection channel 17 shown only schematically conveys the compressed outlet fluid in thegas distribution interior 9 b situated at left through theconnection channel 17 only represented schematically to thegas outlet 10.FIG. 12 shows a section throughFIGS. 10 and 11 along sectioning line E-E, where thepiston 15 and thepiston rod 16 are not shown inFIG. 12 . Thegas distribution housings 9 a are configured such that thegas distribution interior 9 b only lies against thecylinder barrel exterior 2 e along onepart section 2 g. Thepart sections 2 g run axially symmetrically in regard to the longitudinal axis L, which has the result thatpart sections 2 g of thecylinder 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 lyingpart sections 2 g are swept by the same gas, either the inlet gas being compressed or the compressed outlet gas. Advantageously, thepart section 2 g extends in the circumferential direction U for at least 20° or at least 30°. In the sample embodiment shown inFIG. 12 , thegas distribution interiors 9 b run perpendicular to each other in the cross section shown. Thegas distribution interiors 9 b, as shown inFIG. 14 , may also run at an acute or an obtuse angle to each other. The embodiment represented inFIG. 14 has the advantage that the housingupper part 1 requires less space, so that severallabyrinth piston compressors 21 can be arranged closer alongside each other. -
FIG. 13 shows in a longitudinal section a sixth sample embodiment. In contrast with the sample embodiment represented inFIG. 3 , the housingupper part 21 represented inFIG. 13 hasvalve seats valves 5 situated therein only on the left side of thegas distribution interior 9 b, while no valves are arranged in the depicted right side of thegas distribution interior 9 b. Otherwise, the housingupper parts 1 represented inFIGS. 3 and 13 are the same in configuration, so that further details can be seen in particular fromFIGS. 4 and 9 . - The housing
upper part 1 according to the invention has at least onecylinder inlet opening 4 and at least onecylinder outlet opening 6. Preferably, a plurality ofcylinder inlet openings 4 spaced apart in the circumferential direction are arranged in thecylinder wall 2 d in the circumferential direction to the longitudinal axis L. Preferably, thecylinder inlet openings 4 are regularly spaced apart in the circumferential direction, there being arranged preferably two, three or fourcylinder inlet openings 4 in the circumferential direction. Likewise, as represented inFIG. 8 , a plurality ofcylinder outlet openings 6 spaced apart in the circumferential direction could be arranged in thecylinder wall 2 d in the circumferential direction to the longitudinal axis L. Preferably, thecylinder outlet openings 6 are regularly spaced apart in the circumferential direction, there being arranged preferably two, three or fourcylinder outlet openings 6 in the circumferential direction. However, thecylinder outlet openings 6 are preferably arranged at the end face of the cylinder interior 2 a, while thecylinder outlet openings 6 preferably run in the direction of the longitudinal axis L. In the circumferential direction to the longitudinal axis L there can be arranged a singlecylinder outlet opening 6, but preferably there are two, three or fourcylinder outlet openings 6. - The
labyrinth piston compressor 21 comprises acylinder barrel 2 running in the direction of a longitudinal axis L with a cylinder interior 2 a and acylinder barrel exterior 2 e, while apiston 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 acompression chamber 3, the gas being compressed being drawn in through acylinder inlet opening 4 passing through thecylinder barrel 2. - The method for cooling the
housing 1 of thelabyrinth piston compressor 21 occurs in that an inlet fluid being compressed is drawn in through acylinder inlet opening 4 arranged on thecylinder barrel 2 from agas distribution interior 9 b into the cylinder interior 2 a, or wherein a compressed outlet fluid is discharged via acylinder outlet opening 6 arranged on thecylinder barrel 2 from the cylinder interior 2 a into thegas distribution interior 9 b, and whereinpart sections 2 g of thecylinder 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 situatedpart sections 2 g have the same or substantially the same temperature. - In one advantageous method, the
part section 2 g runs along an angle of 360°, so that thecylinder barrel exterior 2 e is swept by the inlet fluid being compressed or the compressed outlet fluid by an angle α of 360 degrees in the circumferential direction of the longitudinal axis L. - In one advantageous embodiment, the
cylinder barrel exterior 2 e comprises in the circumferential direction of the longitudinal axis L at least twopart sections 2 g spaced apart in the circumferential direction, and extending in the circumferential direction for an angle of at least 30° each. - In one advantageous method, the outlet fluid is ejected through a
cylinder outlet opening 6 arranged at the end face of the cylinder interior 2 a, thecylinder inlet opening 4 and thecylinder outlet opening 6 being spaced apart in the direction of the longitudinal axis L, in order to produce a temperature gradient on thecylinder barrel exterior 2 e in the direction of the longitudinal axis L. - Preferably 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 thecylinder barrel 2 distributed in the circumferential direction in order to generate the same temperature in the circumferential direction. - Preferably, moreover, the method occurs such that the
cylinder barrel 2 comprises acylinder barrel exterior 2 e, and the outside 2 e is swept at least along the interior length L2 by the fluid being compressed in order to cool thecylinder barrel 2 along the interior length L2 before the fluid being compressed flows into the cylinder interior 2 a.
Claims (16)
1. A housing upper part of a labyrinth piston compressor comprising a cylinder barrel running in the direction of a longitudinal axis (L) 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, characterized in that
a gas distribution housing at least partly encloses the cylinder barrel in the circumferential direction to the longitudinal axis (L) 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 (L),
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.
2. The housing upper part as claimed in claim 1 , wherein the cylinder interior has a cylinder interior length (L2), and the gas distribution interior extends at least along the cylinder interior length (L2) so that the part section of the cylinder barrel exterior forms a boundary of the gas distribution interior at least along the entire length of the cylinder interior length (L2).
3. The housing upper part as claimed in claim 1 , wherein the gas distribution housing encloses the cylinder barrel exterior in the circumferential direction of the longitudinal axis (L) by an angle (α) of 360°, so that the gas distribution interior or the part section extends in the circumferential direction for 360°.
4. The housing upper part according to claim 1 , wherein the cylinder barrel exterior comprises in the circumferential direction of the longitudinal axis (L) at least two part sections spaced apart in the circumferential direction, which form a boundary of the gas distribution interior along the cylinder barrel exterior, wherein the part sections extend in the circumferential direction across an angle of at least 30°.
5. The housing upper part according to claim 1 , wherein the cylinder inlet opening and the cylinder outlet opening are spaced apart in the longitudinal direction (L).
6. The housing upper part according claim 1 , wherein a plurality of cylinder inlet openings or cylinder outlet openings are arranged at the same height in regard to the longitudinal axis (L), and mutually spaced apart in the circumferential direction in regard to the longitudinal axis (L).
7. The housing upper part according to claim 6 , wherein two cylinder inlet openings or two cylinder outlet openings are arranged each time opposite each other in regard to the longitudinal axis (L).
8. The housing upper part according to claim 6 , wherein the cylinder outlet opening or the cylinder inlet opening is arranged at an end face of the cylinder interior running in the direction of the longitudinal axis (L).
9. The housing upper part according claim 6 , wherein it is made from aluminum or an aluminum alloy.
10. A labyrinth piston compressor comprising a housing upper part according to claim 1 and also comprising a piston as well as a piston rod, wherein the piston divides the cylinder interior into a first compression chamber and a second compression chamber, wherein a first cylinder inlet opening opens into the first compression chamber, wherein a second cylinder inlet opening opens into the second compression chamber, wherein the first cylinder outlet opening is arranged at the end face of the cylinder interior facing away from the piston rod, and wherein a second cylinder outlet opening is arranged at the end face of the cylinder interior facing toward the piston rod.
11. The labyrinth piston compressor according to claim 10 , wherein a connection channel connects the first and the second cylinder outlet opening fluidically to each other, and the connection channel is fluidically connected to a gas outlet.
12. The labyrinth piston compressor according to claim 10 , wherein the gas distribution interior furthermore encloses at least a part section of the cylinder outlet opening on the outside in the direction of the longitudinal axis (L).
13. 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 (L) 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 (L) are swept by the same inlet fluid or outlet fluid.
14. The method according to claim 13 , wherein the cylinder barrel exterior is swept by the inlet fluid being compressed or by compressed outlet fluid by an angle (α) of 360 degrees in the circumferential direction of the longitudinal axis (L).
15. The method according to claim 13 , wherein the cylinder barrel exterior comprises in the circumferential direction of the longitudinal axis (L) at least two part sections spaced apart in the circumferential direction, extending in the circumferential direction for an angle of at least 30° each.
16. The method according to claim 13 , wherein the outlet fluid is ejected through a cylinder outlet opening arranged at the end face of the cylinder interior, wherein the cylinder inlet opening and the cylinder outlet opening are spaced apart in the direction of the longitudinal axis (L) so as to produce a temperature gradient on the cylinder barrel exterior in the direction of the longitudinal axis (L).
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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EP14179372.9 | 2014-07-31 | ||
EP14179372 | 2014-07-31 | ||
EP14179721.7 | 2014-08-04 | ||
EP14179721 | 2014-08-04 | ||
PCT/EP2015/067233 WO2016016222A1 (en) | 2014-07-31 | 2015-07-28 | Housing upper part of a labyrinth piston compressor and method for cooling same, and labyrinth piston compressor |
Publications (1)
Publication Number | Publication Date |
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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 (en) |
EP (1) | EP3175114B1 (en) |
JP (1) | JP6483235B2 (en) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109763955A (en) * | 2019-03-29 | 2019-05-17 | 北京航空航天大学 | It is a kind of from air-cooled piston compressor |
US20210404454A1 (en) * | 2018-09-24 | 2021-12-30 | Burckhardt Compression Ag | Labyrinth piston compressor |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1397914A (en) * | 1920-06-29 | 1921-11-22 | Edwin J Augustin | Ammonia-compressor |
US1628944A (en) * | 1924-02-01 | 1927-05-17 | Francis E Wright | Compressor for refrigerating apparatus |
US1646754A (en) * | 1927-02-14 | 1927-10-25 | Michael J Leahy | Pump, compressor, or the like |
US1652978A (en) * | 1925-04-14 | 1927-12-13 | Burlectas Ltd | Air or gas compressor |
US1682736A (en) * | 1927-03-05 | 1928-09-04 | Carl W Floss | Compressor piston |
US1707796A (en) * | 1925-11-27 | 1929-04-02 | Carrey Morse Engineering Compa | Compressor |
US2878990A (en) * | 1953-10-30 | 1959-03-24 | Sulzer Ag | Upright piston compressor |
US3112064A (en) * | 1960-11-01 | 1963-11-26 | Westinghouse Electric Corp | Gas compressor valves |
US4889039A (en) * | 1988-10-17 | 1989-12-26 | Miller Bernard F | Gas compressor with labyrinth sealing and active magnetic bearings |
US5860798A (en) * | 1995-03-03 | 1999-01-19 | Cryopump Ag | Pump for pumping a fluid comprising a liquefied gas and apparatus having a pump |
US20030133816A1 (en) * | 2001-05-24 | 2003-07-17 | Jung-Sik Park | Discharge apparatus for reciprocating compressor |
US7237474B2 (en) * | 2003-04-02 | 2007-07-03 | Robert Bosch Gmbh | Reciprocating pump |
US7553137B2 (en) * | 2004-11-08 | 2009-06-30 | Lg Electronics Inc. | Discharge valve assembly of reciprocating compressor |
US7785086B2 (en) * | 2002-09-24 | 2010-08-31 | Continental Teves Ag & Co. Ohg | Supply device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH359507A (en) * | 1958-03-14 | 1962-01-15 | Sulzer Ag | Method for operating a labyrinth piston compressor and compressor for carrying out the method |
JPS56151848A (en) * | 1980-04-25 | 1981-11-25 | Hitachi Ltd | Supercharger for reciprocating compressor |
JP2010209723A (en) | 2009-03-09 | 2010-09-24 | Japan Steel Works Ltd:The | Labyrinth piston type reciprocating compressor |
FR2956452B1 (en) * | 2010-02-17 | 2012-04-06 | Vianney Rabhi | DOUBLE-EFFECT PISTON COMPRESSOR GUIDED BY A ROLLER AND DRIVEN BY A WHEEL AND CREMAILLERES |
-
2015
- 2015-07-28 US US15/500,777 patent/US20170218935A1/en not_active Abandoned
- 2015-07-28 JP JP2017505217A patent/JP6483235B2/en active Active
- 2015-07-28 EP EP15750943.1A patent/EP3175114B1/en active Active
- 2015-07-28 CN CN201580039144.0A patent/CN106536929B/en active Active
- 2015-07-28 WO PCT/EP2015/067233 patent/WO2016016222A1/en active Application Filing
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1397914A (en) * | 1920-06-29 | 1921-11-22 | Edwin J Augustin | Ammonia-compressor |
US1628944A (en) * | 1924-02-01 | 1927-05-17 | Francis E Wright | Compressor for refrigerating apparatus |
US1652978A (en) * | 1925-04-14 | 1927-12-13 | Burlectas Ltd | Air or gas compressor |
US1707796A (en) * | 1925-11-27 | 1929-04-02 | Carrey Morse Engineering Compa | Compressor |
US1646754A (en) * | 1927-02-14 | 1927-10-25 | Michael J Leahy | Pump, compressor, or the like |
US1682736A (en) * | 1927-03-05 | 1928-09-04 | Carl W Floss | Compressor piston |
US2878990A (en) * | 1953-10-30 | 1959-03-24 | Sulzer Ag | Upright piston compressor |
US3112064A (en) * | 1960-11-01 | 1963-11-26 | Westinghouse Electric Corp | Gas compressor valves |
US4889039A (en) * | 1988-10-17 | 1989-12-26 | Miller Bernard F | Gas compressor with labyrinth sealing and active magnetic bearings |
US5860798A (en) * | 1995-03-03 | 1999-01-19 | Cryopump Ag | Pump for pumping a fluid comprising a liquefied gas and apparatus having a pump |
US20030133816A1 (en) * | 2001-05-24 | 2003-07-17 | Jung-Sik Park | Discharge apparatus for reciprocating compressor |
US7785086B2 (en) * | 2002-09-24 | 2010-08-31 | Continental Teves Ag & Co. Ohg | Supply device |
US7237474B2 (en) * | 2003-04-02 | 2007-07-03 | Robert Bosch Gmbh | Reciprocating pump |
US7553137B2 (en) * | 2004-11-08 | 2009-06-30 | Lg Electronics Inc. | Discharge valve assembly of reciprocating compressor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210404454A1 (en) * | 2018-09-24 | 2021-12-30 | Burckhardt Compression Ag | Labyrinth piston compressor |
CN109763955A (en) * | 2019-03-29 | 2019-05-17 | 北京航空航天大学 | It is a kind of from air-cooled piston compressor |
Also Published As
Publication number | Publication date |
---|---|
CN106536929B (en) | 2019-03-15 |
CN106536929A (en) | 2017-03-22 |
JP6483235B2 (en) | 2019-03-13 |
EP3175114B1 (en) | 2018-09-12 |
EP3175114A1 (en) | 2017-06-07 |
WO2016016222A1 (en) | 2016-02-04 |
WO2016016222A9 (en) | 2016-03-31 |
JP2017522499A (en) | 2017-08-10 |
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