EP1207303A2 - Ensemble d'instruments pour compresseurs - Google Patents

Ensemble d'instruments pour compresseurs Download PDF

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Publication number
EP1207303A2
EP1207303A2 EP01127278A EP01127278A EP1207303A2 EP 1207303 A2 EP1207303 A2 EP 1207303A2 EP 01127278 A EP01127278 A EP 01127278A EP 01127278 A EP01127278 A EP 01127278A EP 1207303 A2 EP1207303 A2 EP 1207303A2
Authority
EP
European Patent Office
Prior art keywords
instrument assembly
pressure
supporting member
pneumatic circuit
tank
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Withdrawn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
EP01127278A
Other languages
German (de)
English (en)
Other versions
EP1207303A3 (fr
Inventor
Paolo Passerini
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.)
FINI ELETTROCOSTRUZIONI MECCANICHE SpA
Original Assignee
FINI ELETTROCOSTRUZIONI MECCANICHE SpA
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 FINI ELETTROCOSTRUZIONI MECCANICHE SpA filed Critical FINI ELETTROCOSTRUZIONI MECCANICHE SpA
Publication of EP1207303A2 publication Critical patent/EP1207303A2/fr
Publication of EP1207303A3 publication Critical patent/EP1207303A3/fr
Withdrawn legal-status Critical Current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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/06—Mobile combinations
    • 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
    • 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
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • 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
    • F04B49/22—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 by means of valves
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit
    • F04B2205/061—Pressure in a (hydraulic) circuit after a throttle
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit
    • F04B2205/063—Pressure in a (hydraulic) circuit in a reservoir linked to the pump outlet

Definitions

  • the present invention relates to an integrated instrument assembly for compressors.
  • a compressor is equipped with control and/or safety devices, such as a pressure switch - for cutting off electric power supply to the compressor when a given pressure is reached in the tank - and a pressure reducer.
  • Such devices are normally supplied separately and installed on the compressor by the user.
  • an integrated instrument assembly for compressors comprising a pressure switch and a pressure reducer connected to each other by a pneumatic circuit; the instrument assembly being connectable to a compressor comprising a compressed-air tank communicating with said pneumatic circuit; and the instrument assembly being characterized by comprising a supporting member for supporting said pressure switch and said pressure reducer and having said pneumatic circuit.
  • Number 1 in Figure 1 indicates as a whole a compressor comprising a compressed-air tank 2, a motor 3, and a pump assembly 4.
  • Compressor 1 is fitted with an instrument assembly 5 connected to pump assembly 4 by a conduit 6 and to tank 2 by a conduit 7, and which comprises two taps 8 and 9 ( Figures 1 and 5) for feeding compressed air to respective user devices (not shown).
  • assembly 5 comprises a pressure switch 10; a pressure reducer 11; a pressure gauge 12 showing the air pressure in tank 2; a pressure gauge 13 connected downstream from pressure reducer 11 and showing the pressure of the air supplied by taps 8 and 9; and a thermal safety device 14 connected by cables, not shown, to motor 3 and to pressure switch 10.
  • safety device 14 is integrated in pressure switch 10.
  • Safety device 14 may comprise a relay or resistor (known and not shown), and provides for sensing the temperature of motor 3 and disabling pressure switch 10 when the temperature of motor 3 exceeds a given threshold value.
  • Components 10 to 14 of assembly 5 are all mounted on a supporting plate 15 forming part of assembly 5 and having an internal pneumatic circuit 16 communicating with pressure switch 10, pressure reducer 11, and pressure gauges 12 and 13.
  • Circuit 16 comprises an inlet 17 connected to pump assembly 4 by conduit 6; an exhaust conduit 18 connected to pressure switch 10; an inlet/outlet 19 connected to tank 2 by conduit 7; and two outlets 20 and 21 ( Figures 4 and 5) connectable to respective user devices (not shown) by respective taps 8 and 9.
  • Circuit 16 comprises an initial portion 22 communicating with inlet 17 and exhaust conduit 18; an intermediate portion 23 communicating with inlet/outlet 19; and an end portion 24 communicating with outlets 20 and 21.
  • Assembly 5 comprises a check valve 25 located along circuit 16, between initial portion 22 and intermediate portion 23; and a known safety valve 26 located along intermediate portion 23, and for connecting intermediate portion 23 with the outside when the pressure exceeds a given maximum value.
  • Pressure reducer 11 comprises a piston 27 activated by a spring 28; and a truncated-cone-shaped on-off member 29, which is moved by a spring 30 between a rest position ( Figures 4 and 5), in which no air is supplied by taps 8 and 9, and member 29 closes an opening 31 between intermediate portion 23 and end portion 24, and a work position (not shown), in which air is supplied by taps 8 and 9, and member 29 is lowered by piston 27 to connect intermediate portion 23 and end portion 24.
  • compressed air is fed by pump assembly 4 into tank 2, and valve 25 is open to connect initial portion 22 and portion 23 until a given maximum pressure is reached; at which point, pressure switch 10 cuts off electric power supply to motor 3 powering pump assembly 4, and a control device inside pressure switch 10 opens a known valve (not shown) to expel the air in portion 22 along exhaust conduit 18, while valve 25 closes to prevent the compressed air from escaping from tank 2.
  • portion 24 is connected to the outside, thus lowering piston 27, which intercepts one end of member 29, which moves down in opposition to spring 30 to connect portions 23 and 24 and so release the compressed air stored in tank 2.
  • supporting plate 15 is formed, e.g. cast, in one piece, and forming circuit 16 inside supporting plate 15 itself provides for improved strength, sealing and reliability of assembly 5 as compared with known assembly solutions in which the various component parts are connected by fittings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Fluid-Pressure Circuits (AREA)
EP01127278A 2000-11-17 2001-11-16 Ensemble d'instruments pour compresseurs Withdrawn EP1207303A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO000670 2000-11-17
IT2000BO000670A ITBO20000670A1 (it) 2000-11-17 2000-11-17 Gruppo di strumentazione integrato per compressori

Publications (2)

Publication Number Publication Date
EP1207303A2 true EP1207303A2 (fr) 2002-05-22
EP1207303A3 EP1207303A3 (fr) 2003-01-15

Family

ID=11438860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127278A Withdrawn EP1207303A3 (fr) 2000-11-17 2001-11-16 Ensemble d'instruments pour compresseurs

Country Status (3)

Country Link
US (1) US20020085929A1 (fr)
EP (1) EP1207303A3 (fr)
IT (1) ITBO20000670A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009062276A1 (fr) * 2007-11-14 2009-05-22 Festo Automação Ltda. Régulateur de pression

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019060871A1 (fr) * 2017-09-25 2019-03-28 Carrier Corporation Dispositif de sécurité à arrêt de pression automatique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1730319A (en) * 1928-06-06 1929-10-01 Newmatix Equipment Co Air-compressing apparatus
US4077747A (en) * 1976-09-07 1978-03-07 Tsc Industries, Inc. Portable air compressor
US4622857A (en) * 1984-10-16 1986-11-18 Sanborn Manufacturing Company, Inc. Pressure gauge and regulator
US4768930A (en) * 1984-01-13 1988-09-06 The Devilbiss Company Hold-down mechanism for a pivotally-mounted motor on an air compressor
JP2000265962A (ja) * 1999-03-18 2000-09-26 Hitachi Koki Co Ltd エアタンク
DE19930610A1 (de) * 1999-07-02 2001-01-18 Condor Werk Frede Kg Geb Kompressor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1730319A (en) * 1928-06-06 1929-10-01 Newmatix Equipment Co Air-compressing apparatus
US4077747A (en) * 1976-09-07 1978-03-07 Tsc Industries, Inc. Portable air compressor
US4768930A (en) * 1984-01-13 1988-09-06 The Devilbiss Company Hold-down mechanism for a pivotally-mounted motor on an air compressor
US4622857A (en) * 1984-10-16 1986-11-18 Sanborn Manufacturing Company, Inc. Pressure gauge and regulator
JP2000265962A (ja) * 1999-03-18 2000-09-26 Hitachi Koki Co Ltd エアタンク
DE19930610A1 (de) * 1999-07-02 2001-01-18 Condor Werk Frede Kg Geb Kompressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12, 3 January 2001 (2001-01-03) -& JP 2000 265962 A (HITACHI KOKI CO LTD), 26 September 2000 (2000-09-26) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009062276A1 (fr) * 2007-11-14 2009-05-22 Festo Automação Ltda. Régulateur de pression

Also Published As

Publication number Publication date
ITBO20000670A1 (it) 2002-05-17
US20020085929A1 (en) 2002-07-04
ITBO20000670A0 (it) 2000-11-17
EP1207303A3 (fr) 2003-01-15

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