GB982927A - Improvements in or relating to compressor unloaders - Google Patents

Improvements in or relating to compressor unloaders

Info

Publication number
GB982927A
GB982927A GB1247962A GB1247962A GB982927A GB 982927 A GB982927 A GB 982927A GB 1247962 A GB1247962 A GB 1247962A GB 1247962 A GB1247962 A GB 1247962A GB 982927 A GB982927 A GB 982927A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
cylinder
compressor
port
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.)
Expired
Application number
GB1247962A
Inventor
Alex Robert Purchase
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.)
Normalair Ltd
Original Assignee
Normalair Ltd
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 Normalair Ltd filed Critical Normalair Ltd
Priority to GB1247962A priority Critical patent/GB982927A/en
Priority to ES286094A priority patent/ES286094A1/en
Publication of GB982927A publication Critical patent/GB982927A/en
Expired legal-status Critical Current

Links

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
    • 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
    • F04B49/24—Bypassing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

982,927. Compressors. NORMALAIR Ltd. March 6, 1963 [March 31, 1962], No. 12479/62. Heading F1N. A compressor comprises a piston 13 operating within a cylinder 12, a valve plate 2 provided with valves 5 and 6 being disposed between the cylinder 12 and a cylinder head 1 in which are formed suction and discharge chambers 4 and 3, respectively, the valve-plate 2 having a by-pass port 11 which is controlled by a piston 14 the operation of which is controlled by a pilot valve 7, the latter when open allowing compressed fluid from the discharge chamber 3 to pass through a port 8 and a duct 9 to exert pressure on the piston 14 so as to close the port 11, and the valve 7 when closed preventing the fluid from passing to the piston 14, so unloading the compressor. The valve 7 is preferably operated by a solenoid but may be operated by hydraulic, pneumatic, cable or rod means. The piston 14 is biased to the closed position by a spring 15, a second stiff spring 17 being provided to limit the opening movement of the piston 14 which is adapted to permit fluid to bleed from the duct 9 to the suction chamber 4. If the compressor has more than one cylinder a single pilot valve may control the operation of a plurality of by-pass pistons, more than one of which may be associated with each cylinder.
GB1247962A 1962-03-31 1962-03-31 Improvements in or relating to compressor unloaders Expired GB982927A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1247962A GB982927A (en) 1962-03-31 1962-03-31 Improvements in or relating to compressor unloaders
ES286094A ES286094A1 (en) 1962-03-31 1963-03-15 Improvements in compressor discharge devices (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1247962A GB982927A (en) 1962-03-31 1962-03-31 Improvements in or relating to compressor unloaders

Publications (1)

Publication Number Publication Date
GB982927A true GB982927A (en) 1965-02-10

Family

ID=10005353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1247962A Expired GB982927A (en) 1962-03-31 1962-03-31 Improvements in or relating to compressor unloaders

Country Status (2)

Country Link
ES (1) ES286094A1 (en)
GB (1) GB982927A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522568A (en) * 1982-04-21 1985-06-11 Wabco Fahrzeugbremsen Gmbh Compressor apparatus
US4759692A (en) * 1987-06-22 1988-07-26 Tecumseh Products Company Integral internal pressure relief valve
US4835849A (en) * 1987-06-22 1989-06-06 Tecumseh Products Company Method of making an integral internal pressure relief valve
EP3527825A1 (en) * 2018-02-19 2019-08-21 MAN Truck & Bus SE Device for generating compressed air
DE102019130210A1 (en) * 2019-11-08 2021-05-12 Nabtesco Automotive Corporation Piston compressor with energy saving device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522568A (en) * 1982-04-21 1985-06-11 Wabco Fahrzeugbremsen Gmbh Compressor apparatus
US4759692A (en) * 1987-06-22 1988-07-26 Tecumseh Products Company Integral internal pressure relief valve
FR2616876A1 (en) * 1987-06-22 1988-12-23 Tecumseh Products Co INTERNAL ONE-PIECE DECOMPRESSION VALVE LOCATED WITHIN AN ALTERNATIVE PISTON HERMETIC COMPRESSOR, CALIBRATION DEVICE AND IMPLEMENTATION OF THE ASSEMBLY METHOD
US4835849A (en) * 1987-06-22 1989-06-06 Tecumseh Products Company Method of making an integral internal pressure relief valve
EP3527825A1 (en) * 2018-02-19 2019-08-21 MAN Truck & Bus SE Device for generating compressed air
DE102019130210A1 (en) * 2019-11-08 2021-05-12 Nabtesco Automotive Corporation Piston compressor with energy saving device
DE102019130210B4 (en) 2019-11-08 2024-04-18 Nabtesco Automotive Corporation Piston compressor with energy saving device

Also Published As

Publication number Publication date
ES286094A1 (en) 1963-10-16

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