EP1288503A1 - Verdichtungsgerät - Google Patents

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Publication number
EP1288503A1
EP1288503A1 EP01307041A EP01307041A EP1288503A1 EP 1288503 A1 EP1288503 A1 EP 1288503A1 EP 01307041 A EP01307041 A EP 01307041A EP 01307041 A EP01307041 A EP 01307041A EP 1288503 A1 EP1288503 A1 EP 1288503A1
Authority
EP
European Patent Office
Prior art keywords
pipe
fluid
chambers
compressor
pressure
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.)
Withdrawn
Application number
EP01307041A
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English (en)
French (fr)
Inventor
Ming-Te Lu
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP01307041A priority Critical patent/EP1288503A1/de
Publication of EP1288503A1 publication Critical patent/EP1288503A1/de
Withdrawn legal-status Critical Current

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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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control

Definitions

  • This invention relates to a fluid compressor, and more particularly to a compressor apparatus, which includes a single compressor and which can discharge a fluid at different pressures.
  • a common two-stage reciprocating compressor 6 is shown to include a motor 61, which is provided with an output shaft 611 that has two eccentric shaft portions 621, 622.
  • Two pistons 631, 632 are attached respectively and rotatably to the eccentric shaft portions 622, 621, and are movable within two cylinders 641, 642, respectively.
  • An auxiliary plate 651 is disposed fixedly in the cylinders 641, 642, and is formed with four openings 653, 655, 660, 662.
  • the cylinders 641, 642 define four volume-invariable chambers 652, 657, 659, 664 that are formed between the plate 651 and the end walls of the cylinders 641, 642, two volume-variable chambers 654, 661 that are formed between the plate 651 and the pistons 631, 632, and a discharge port 665 that is formed through the end wall of the cylinder 642.
  • An inverted U-shaped tube 658 is fixed to the cylinders 641, 642, and is in fluid communication with the chambers 657, 659.
  • Two one-way valves 656, 663 are disposed at the openings 655, 662, respectively. Air is introduced into the chamber 652, and is sucked into the chamber 654 via the opening 653 by moving the piston 631 downwardly.
  • the air flows from the chamber 654 into the chamber 657 via the opening 655, and subsequently into the chamber 659 via the tube 658.
  • the piston 632 reciprocally, the air can flow from the chamber 659 into the chamber 664 via the opening 660, the chamber 661 and the opening 662, thereby permitting discharge of the air through the port 665. Accordingly, the air can be compressed twice in the compressor 6. However, air is discharged from the compressor 6 at only one pressure, thereby limiting the applicable range of the compressor 6.
  • a multi-stage axial-flow compressor 7 is shown to include a housing 71, a rotor 72, a plurality of rotating vanes 73 that are fixed to the rotor 72, and a plurality of guiding vanes 74 that are fixed to an inner surface of the housing 71.
  • the rotating vanes 73 are staggered with the guiding vanes 74 so as to form an air passage therebetween, through which air can flow from the left end of the compressor 7 to the right end of the same. As such, the air is discharged from the right end of the compressor 7 at only one pressure.
  • an object of this invention is to provide a compressor apparatus, which includes a single compressor that can recompress compressed fluid so as to discharge a fluid at different pressures, thereby increasing the applicable range.
  • a compressor apparatus includes a compressor with an intake pipe and a discharge pipe, a plurality of branch pipes that extend from and that are in fluid communication with the discharge pipe, and a plurality of chambers that are in fluid communication with the branch pipes, respectively.
  • Each of the chambers is in fluid communication with the intake pipe via a return flow pipe unit.
  • a plurality of pressure sensors are disposed respectively at the chambers, and are set respectively at different discharge pressures. When the fluid pressure in one of the chambers reaches the corresponding discharge pressure, the fluid flows from the one of the chambers into the intake pipe via the corresponding return flow pipe unit so as to return to the compressor for performing further compression of the fluid.
  • Each of the branch pipes and the return flow pipe units is equipped with a control valve unit that is controlled by a control unit so that the fluid can flow through the chambers in a sequence that increases in the magnitude of the discharge pressures. As such, the fluid can be discharged from the chambers at the discharge pressures.
  • a compressor apparatus according to this invention is shown to include a compression unit 1, five recompression units 2, 3, 4, 5, 6, a control unit 7 and a common pressure-sensing unit 8.
  • the compression unit 1 includes a compressor 100, a cooler 101, an intake pipe 102 and a discharge pipe 103.
  • the cooler 101 is disposed on the discharge pipe 103 so as to cool the fluid that flows from the compressor 100.
  • the intake pipe 102 is used to supply the fluid into the compressor 100, and is equipped with a normal-closed control valve 111 and a one-way valve 112 for limiting fluid flow from the intake pipe 102 into the compressor 100.
  • the discharge pipe 103 is in fluid communication with the compressor 100, and is provided with six branch pipes 104 that are in fluid communication with six chambers 131, 231, 331, 431, 531, 631, respectively.
  • Each adjacent pair of the chambers 131, 231, 331, 431, 531, 631 are communicated fluidly with each other by a connecting pipe 9, which is equipped with a one-way valve 91.
  • the valves 91 limit the fluid flow from the chamber 131 to the chamber 631 via the chambers 231, 331, 431, 531.
  • Each of the branch pipes 104 is equipped with a normal-closed control valve 121 and a one-way valve 122 for limiting fluid flow from the respective branch pipe 104 into the corresponding chamber 131, 231, 331, 431, 531, 631.
  • the control unit 7 opens the control valves 111, 121 of the compression unit 1 so as to permit the fluid flow from the intake pipe 102 into the discharge pipe 103 via the compressor 100.
  • control unit 7 opens the control valve 121 of the compression unit 1 and closes the control valves 121 of the recompression units 2, 3, 4, 5, 6, and because the discharge pipe 103 has an open first end that is coupled with the compressor 100, and a closed second end (not shown), the fluid flows from the compressor 100 into the branch pipe 104 of the compression unit 1, and subsequently into the chamber 131.
  • the chamber 131 is equipped with a pressure sensor 141 and a safety valve 151, which is disposed in the chamber 131 in a known manner in order to prevent explosion taking place in the chamber 131.
  • the control unit 7 closes the control valves 111, 121 of the compression unit 1.
  • the first recompression unit 2 includes a return flow pipe unit 20, which interconnects the outlet portion 132 of the chamber 131 and the intake pipe 102 and which has a main pipe portion 200, and a pair of first and second pipe portions 201, 202.
  • the main pipe portion 200 has an upstream end that is connected fluidly to the outlet portion 132 of the chamber 131, and a downstream end that is connected fluidly to the upstream ends of the first and second pipe portions 201, 202.
  • An auxiliary pipe 105 extends from and is in fluid communication with the intake pipe 102 at an intersection 106, and constitutes a portion of the return flow pipe unit 200.
  • the first and second pipe portions 201, 202 have downstream ends that are connected fixedly to and that are in fluid communication with the auxiliary pipe 105.
  • Each of the first and second pipe portions 201, 202 is equipped with a normal-closed control valve 211, 232, and a one-way valve 212, 233 for limiting fluid flow from the first and second pipe portions 201, 202 into the auxiliary pipe 105. Because the auxiliary pipe 105 has a first end that is connected to the intake pipe 102, and a closed second end (not shown) , the fluid can flow from the auxiliary pipe 105 into the intake pipe 102. It is noted that if a large amount of the fluid flows directly and instantly from the main pipe portion 200 into the auxiliary pipe 105, the latter may explode.
  • the first and second pipe portions 201, 201 and the common pressure-sensing unit 8 are therefore provided in order to prevent explosion of the auxiliary pipe 105.
  • the control valve 211 of the first pipe portion 201 is opened, while the control valve 232 of the second pipe portion 202 is closed, under the control of the control unit 7.
  • the common pressure-sensing unit 8 is connected operatively to the first and second pipe portions 201, 202.
  • the control unit 7 opens the control valve 232 of the second pipe portion 202 and the control valve 121 of the branch pipe 104 of the recompression unit 2. As such, the flow rate of the fluid from the auxiliary pipe 105 to the intake pipe 102 is increased. Then, because the control valve 121 of the recompression unit 2 is opened, and because the control valves 121 of the compression unit 1 and the recompression units 3, 4, 5, 6 are closed, the fluid flows from the discharge pipe 103 into the chamber 231.
  • the chamber 231 of the first recompression unit 2 is also equipped with a pressure sensor 241 and a safety valve 251, which have the same functions as the pressure sensor 141 and the safety valve 151 of the compression unit 1, except that the pressure sensor 241 is set at a second discharge pressure that is higher than the first discharge pressure of the pressure sensor 141 of the compression unit 1.
  • the remaining recompression units 3, 4, 5, 6 are similar to the first recompression unit 2 in construction.
  • the preset pressure values that are set at the common pressure-sensing unit 8 and that correspond respectively to the recompression units 2, 3, 4, 5, 6 are different from each other.
  • the common pressure-sensing unit 8 is connected to all of the recompression units 2, 3, 4, 5, 6.
  • five separate pressure-sensing units can substitute for the common pressure-sensing unit 8 to cooperate with the recompression units 2, 3, 4, 5, 6, respectively.
  • the fluid can flow along a flow path of the compressor 100, the first chamber 131, the compressor 100, the second chamber 231, the compressor 100, the third chamber 331, the compressor 100, the fourth chamber 431, the compressor 100, the fifth chamber 531, the compressor 100 and the sixth chamber 631, thereby forming six compression stages to compress the fluid progressively.
  • the fluid flows through the chambers 131, 231, 331, 431, 531, 631 in a sequence that increases in the magnitude of the discharge pressures.
  • compressed fluid can be discharged from the chambers 131, 231, 331, 431, 531, 631 at different pressures.
  • control unit 7 If it is found by the control unit 7 that the fluid pressure in one of the chambers 131, 231, 331, 431, 531 drops from the corresponding discharge pressure, the control unit 7 will close all of the control valves of the recompression unit 2, 3, 4, 5, 6 succeeding to the one of the chambers 131, 231, 331, 431, 531, and open all of the control valves of the compression unit 1 or the recompression unit 2, 3, 4, 5 that precedes the one of the chambers 131, 231, 331, 431, 531 for supplement of the fluid to the one of the chambers 131, 231, 331, 431, 531.
  • the pressure sensor 141 activates the control unit 7 to close the control valves 211, 232, 121 of the first recompression unit 2 and to open the control valves 111, 121 of the compression unit 1, thereby permitting supplement of the fluid into the chamber 131 until the fluid pressure in the first chamber 131 reaches the first discharge pressure once again.
  • each adjacent pair of the chambers 131, 231, 331, 431, 531, 631 are interconnected by one of the connecting pipes 9, when the fluid pressure in the chamber 131 reaches the first discharge pressure, the fluid flows from the chamber 131 into the chambers 231, 331, 431, 531, 631 so that the fluid pressures in the chambers 231, 331, 431, 531, 631 are equal to the first discharge pressure.
  • the fluid pressure in the chamber 231 reaches the second discharge pressure
  • the fluid flows from the chamber 231 into the chambers 331, 431, 531, 631 so that the fluid pressures in the chambers 331, 431, 531, 631 are equal to the second discharge pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP01307041A 2001-08-17 2001-08-17 Verdichtungsgerät Withdrawn EP1288503A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01307041A EP1288503A1 (de) 2001-08-17 2001-08-17 Verdichtungsgerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01307041A EP1288503A1 (de) 2001-08-17 2001-08-17 Verdichtungsgerät

Publications (1)

Publication Number Publication Date
EP1288503A1 true EP1288503A1 (de) 2003-03-05

Family

ID=8182203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01307041A Withdrawn EP1288503A1 (de) 2001-08-17 2001-08-17 Verdichtungsgerät

Country Status (1)

Country Link
EP (1) EP1288503A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480654A (en) * 1982-08-26 1984-11-06 Firey Joseph C Multipressure compressor
EP0381562A1 (de) * 1989-01-31 1990-08-08 Nodet-Gougis Verfahren und Vorrichtung zur Regelung des Arbeitspunktes eines Ventilators, der auf einem landwirtschaftlichen Gerät montiert ist
WO2000019105A1 (en) * 1998-09-25 2000-04-06 Honeywell Inc. Multiple centrifugal air compressor system control

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480654A (en) * 1982-08-26 1984-11-06 Firey Joseph C Multipressure compressor
EP0381562A1 (de) * 1989-01-31 1990-08-08 Nodet-Gougis Verfahren und Vorrichtung zur Regelung des Arbeitspunktes eines Ventilators, der auf einem landwirtschaftlichen Gerät montiert ist
WO2000019105A1 (en) * 1998-09-25 2000-04-06 Honeywell Inc. Multiple centrifugal air compressor system control

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