Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
  • F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
  • F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
• • 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
  • F04B23/00—Pumping installations or systems
  • F04B23/02—Pumping installations or systems having reservoirs
  • F04B23/021—Pumping installations or systems having reservoirs the pump being immersed in the reservoir
  • F04B23/023—Pumping installations or systems having reservoirs the pump being immersed in the reservoir only the pump-part being immersed, the driving-part being outside the reservoir
• • 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
  • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
  • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
  • F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
  • F04B37/20—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids for wet gases, e.g. wet air

Definitions

• the invention relates to a compressor, in particular a compressor for cryogenic media, preferably for liquid hydrogen, comprising a compressor chamber surrounded by a cylinder wall, in which a compressor piston is moved linearly, a suction and a pressure valve, which are arranged in the region of the lower end position of the compressor piston are, and a liquid space at least partially surrounding the compressor space.
• cryogenic media is to be understood below to mean so-called cryogenic liquids, in particular liquid hydrogen, liquefied natural gas, liquid nitrogen, liquid oxygen and other liquefied gases.
• Compressors of all kinds are well known from the prior art. What they all have in common is that the medium to be compressed is fed into a compression chamber via a spring-loaded suction valve, compressed and then withdrawn from the compression chamber via a pressure valve.
• the spring force of the spring used for closing a suction valve - in this case r is are preferably coil springs - is that a defined closure of the suction valve is achieved, so the suction valve is pressed into its valve seat and is closed thereby so chosen as a rule.
• the object of the present invention is to provide a generic compressor, in particular a generic compressor for cryogenic media, in which the aforementioned disadvantages can be avoided.
• a generic compressor which is characterized in that the cylinder wall has at least one opening, which corresponds to the liquid space, and at least one opening, through which gaseous medium can be discharged from the compressor space, with the openings at Locations of the cylinder wall are arranged, which are run over by the compressor piston.
• the openings are designed in the form of one and / or more slots
• the opening (s) through which gaseous medium can be discharged from the compressor chamber is or are operatively connected to a gas discharge line
• the openings are arranged at locations on the cylinder wall which are only released by the compressor piston when it has arrived directly before its upper end position or in its upper end position.
• the suction valve has at least one recess on its surface facing the compressor piston, the recess being designed in such a way that a vacuum is created between the suction valve and the compressor piston.
• a compressor chamber R surrounded by a cylinder wall 1 is provided within a compressor housing V: in this a compressor piston K is moved linearly back and forth or up and down.
• the two reversal points of the compressor piston K are referred to below as the lower and upper end positions of the compressor piston K.
• a suction valve S which is loaded by a spring 5 and a spring-loaded pressure valve D which is only shown schematically. Both valves are pressed into their valve seats by means of the forces generated by the springs and thereby closed.
• the compressor chamber R or the cylinder wall 1 are at least partially surrounded by a liquid chamber F, which is formed by the liquid medium to be compressed.
• a gas volume or space G is formed above this liquid space F.
• openings 2 and 3 are now provided.
• one of the openings 2 corresponds to the liquid space, while gaseous medium can be discharged from the compressor space R via the other opening 3.
• this gaseous medium is discharged from the compressor chamber R via a gas discharge line 4.
• the gas produced by the suction process via the opening 2 can now be the Leave the compressor chamber R via the opening 3 and be replaced by the flowing liquid medium. This leads to an increase in the delivery rate and a reduction in the specific compression work.
• the gas compressed by means of the piston K leaves the compression chamber R when the pressure valve D is open via the gas discharge line 6 and is then fed to a consumer via a high-pressure line.
• the two openings 2 and 3 are preferably in the form of one and / or more slots.
• the openings 2 and 3 are preferably arranged at locations on the cylinder wall 1 which are or will only be run over by the compressor piston K when it has reached the top end position or end position.
• the compressor piston K is shown in its upper end position.
• the two openings 2 and 3 are now released, so that liquid medium to be compressed can flow from the liquid space F into the compressor space R via the opening 2 (represented by the arrows drawn in parallel).
• This inflowing liquid medium supplements the quantity of liquid F 'already in the compressor chamber R, which results from the liquid medium flowing in via the suction valve S during the suction tract.
• the gaseous medium G ′ formed during the suction cycle can escape from the compressor chamber R via the opening 3 or the gas discharge line 4. This escape of the gaseous medium is supported by the liquid medium flowing in via the opening 2, since the gaseous medium G ′ located in the compression space R is displaced from the compression space R by the inflowing liquid medium.
• Compressor piston K facing surface has at least one recess; this is designed such that a vacuum is created between the suction valve S and the compressor piston K.
• the shape of the depression (s) to be provided on the surface of the suction valve S facing the compressor piston K can in principle be chosen as desired; the only thing that ultimately matters is that a vacuum is formed between suction valve S and compressor piston K. It is also possible to provide only one or more wells.
• Compressor space increases, which results in a higher delivery rate of the compressor according to the invention.
• a reduction in the specific compressor capacity based on the amount of the pumped or compressed medium can thus be achieved.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Compressor (AREA)
• Details Of Reciprocating Pumps (AREA)
• Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
• Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36655093

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (4)

Citations (5)

Family Cites Families (26)

• 2005
  • 2005-06-17 DE DE102005028200A patent/DE102005028200A1/de not_active Withdrawn
• 2006
  • 2006-06-01 AT AT06754048T patent/ATE422026T1/de not_active IP Right Cessation
  • 2006-06-01 US US11/917,754 patent/US20080213110A1/en not_active Abandoned
  • 2006-06-01 JP JP2008516169A patent/JP4988726B2/ja not_active Expired - Fee Related
  • 2006-06-01 WO PCT/EP2006/005241 patent/WO2006133813A1/de not_active Ceased
  • 2006-06-01 EP EP06754048A patent/EP1915530B1/de not_active Not-in-force
  • 2006-06-01 DE DE502006002758T patent/DE502006002758D1/de active Active

Patent Citations (5)

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