EP3543528B1 - Alternative twin cylinder air compressor - Google Patents

Alternative twin cylinder air compressor Download PDF

Info

Publication number
EP3543528B1
EP3543528B1 EP19162590.4A EP19162590A EP3543528B1 EP 3543528 B1 EP3543528 B1 EP 3543528B1 EP 19162590 A EP19162590 A EP 19162590A EP 3543528 B1 EP3543528 B1 EP 3543528B1
Authority
EP
European Patent Office
Prior art keywords
cylinders
air
intake conduit
compressor according
electric motor
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.)
Active
Application number
EP19162590.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3543528A1 (en
Inventor
Lorenzo Boccato
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.)
Abac Aria Compressa SRL
Original Assignee
FIAC SRL
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 FIAC SRL filed Critical FIAC SRL
Publication of EP3543528A1 publication Critical patent/EP3543528A1/en
Application granted granted Critical
Publication of EP3543528B1 publication Critical patent/EP3543528B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04B39/066—Cooling by ventilation
    • 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
    • F04B25/00—Multi-stage pumps
    • F04B25/005—Multi-stage pumps with two cylinders
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/005—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
    • 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
    • F04B35/04—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 the means being electric
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/125—Cylinder heads
    • 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
    • F04B39/16—Filtration; Moisture separation

Definitions

  • This invention relates to an alternative twin cylinder air compressor.
  • Air compressors are used in many different fields of application, both in professional and household contexts.
  • volumetric air compressors There is a very wide range of constructional architectures for volumetric air compressors but, excluding, for the sake of this invention, those more strictly used in professional contexts (screw, lobe, vane compressors), the most widespread are without doubt alternative compressors.
  • Alternative air compressors compress the air by means of a piston movable in alternating motion inside a cylinder.
  • Alternative compressors are both single cylinder and multi-cylinder and the multi-cylinder ones can be both single stage (the cylinders operate in parallel) and multi-stage (the cylinders operate in series).
  • twin cylinder compressors amongst the possible architectures there is one, which is very widespread, comprising two cylinders arranged in line, spaced from each other and with the electric motor axially interposed between the two cylinders, at the base of them.
  • the two cylinders are located at the opposite ends of an electric motor equipped with a through transmission shaft which engages at its two opposite longitudinal ends with the respective crank of each of the two piston-cylinder pumping units.
  • each cylinder has a respective valve plate positioned at the head.
  • the aim of this invention is to provide a volumetric air compressor which is simple and practical to make.
  • a further aim of this invention is to provide a volumetric air compressor which is effective and practical to use.
  • the numeral 1 denotes in its entirety an alternative twin cylinder air compressor made in accordance with the invention.
  • the alternative twin cylinder air compressor 1 comprises a base 2 and a central body 3 supported by the base 2.
  • the central body 3 extends longitudinally along a first predetermined direction D1 and houses, centrally, an electric motor EM, shown in the partially disassembled configuration of Figures 5 and 6 .
  • the above-mentioned electric motor EM has an axis of rotation A which is parallel to the above-mentioned first predetermined direction D1.
  • the architecture of the air compressor 1 comprises a first 4 and a second 5 pumping unit positioned on opposite sides of the electric motor EM which, therefore, is interposed between the two pumping units 4, 5.
  • the electric motor EM has the relative through drive shaft, in such a way as to activate both the first and second pumping units 4, 5, even though positioned on opposite sides of the same electric motor EM.
  • the first and second pumping units 4, 5 are arranged in line.
  • the central body 3 and the base 2 are advantageously made in a single piece, in a single casting, which is divided into two portions 3a, 3b, one for each pumping unit 4, 5.
  • the two portions 3a, 3b are side by side in the predetermined direction D1 and are rigidly assembled together.
  • Each first and second pumping unit 4, 5 has a respective cylinder 40, 50 inside of which moves, with reciprocating motion, a respective piston is not visible in the accompanying drawings.
  • the two cylinders 40, 50 extend transversally to the above-mentioned axis of rotation A of the electric motor EM.
  • Respective heads 41, 51 equipped with fins for the purposes of their effective cooling, are positioned on the top of the cylinders 40, 50.
  • each cylinder 40, 50 comprises a respective valve plate, not illustrated in detail, of known type and not described further.
  • the first and second pumping units 4, 5 have respective cooling fans, not shown in the accompanying drawings, keyed on opposite longitudinal ends of the above-mentioned and not illustrated shaft of the electric motor EM.
  • the air compressor 1 comprises, partly covering the above-mentioned fans, two respective covers 6.
  • the covers 6 have a respective octagonal-shaped zone 6c with slits defining an aeration grille designed for the passage of air moved by the fans.
  • the covers 6 extend in the direction of above-mentioned cylinders 40, 50 and are configured to convey at least a part of the flow of air generated by the fans to the top of said cylinders 40, 50, at the respective heads 41, 51.
  • the air compressor 1 according to the invention comprises a containment body 7 interposed between the above-mentioned cylinders 40, 50 of the respective first and second pumping units 4, 5.
  • the containment member 7 comprises a tray 70 positioned between the two cylinders 40, 50, at the respective heads 41, 51.
  • the tray 70 comprises a first chamber 71, a second chamber 72 and a third chamber 73.
  • the first chamber 71 defines a housing for a filter 8 for the air entering towards the cylinders 40, 50.
  • An opening facing the above-mentioned filter 8 is formed on a side wall of the first chamber 71.
  • the filter 8 is also in pneumatic connection with both the heads 41, 51 by means of the respective conduit 74 designed to feed air to both the cylinders 40, 50.
  • the air entering which passes through the filter 8 is fed to the conduit 74 by means of a curved pipe, not visible in the accompanying drawings, passing beneath the second chamber 72.
  • a pipe 75 for pneumatic connection between the heads 41, 51 is positioned inside the second chamber 72 of the tray 70.
  • the tray 70 comprises a cap 76 covering both the first and second chambers 71, 72.
  • the cap 76 is designed to provide a hermetic seal at least for the first chamber 71.
  • the containment member 7 comprises two lateral guards 77a, 77b, positioned on opposite faces of the air compressor 1, symmetrically with respect to a vertical plane passing through the axis of rotation A of the electric motor EM.
  • An air intake conduit 9 is formed on the guard 77a located in the proximity of the first chamber 71.
  • the air intake conduit 9 is in common for both the cylinders 40, 50 and leads inside the first chamber 71, for feeding air from the outside to the filter 8.
  • the intake conduit 9 extends transversally relative to the above-mentioned axis of rotation A of the electric motor EM.
  • the intake conduit 9 is positioned at a mid-point zone M between the cylinders 40, 50 so as to be suitably spaced from them.
  • An inlet opening 78 of the above-mentioned intake conduit 9 is defined on the lateral guards 77a on which said air intake conduit is made.
  • the inlet opening 78 protrudes in a cantilever fashion relative to the cylinders 40, 50.
  • the intake conduit 9 is made as a single conduit, thus minimising its overall size and allowing an optimum positioning in terms of distance from the sources of heat constituted by the cylinders 40, 50.
  • the above-mentioned containment body 7 defines a housing for an electric capacitor 10, necessary for operation of the air compressor 1.
  • the capacitor 10 is advantageously supported by one of the lateral guards 77a, 77b.
  • the two lateral guards 77a, 77b are advantageously made the same, for the purposes of optimising costs, even though the intake conduit 9 and its respective opening 78 are only operational inside the lateral guard 77a facing the first chamber 71, whilst in the lateral guard 77b, even though they are present physically they are not connected to any and, therefore, are not operational.
  • Respective slots 11 configured to define a zone for circulation of air from the outside to the inside of the containment body 7, designed for cooling the above-mentioned electric motor EM are made in the lower part of each lateral guard 77a, 77b.
  • an outlet connector 12 of the compressed air in both cylinders 40, 50 is positioned on the cylinder 40, on the relative head 41.
  • the above-mentioned connecting pipe 75 and first chamber 71 define, for the air compressor 1 according to the invention, pneumatic connection means 13 designed to allow the flow of air towards and away from the cylinders 40, 50.
  • the air sucked using the intake conduit 9 at its opening 78 is directed to the filter 8 housed inside the first chamber 71 of the tray 70.
  • the compressed air in the cylinder 50 is transferred to the head 41 of the cylinder 40 using the pneumatic connection pipe 73; from the head 41 of the cylinder 40, the compressed air in both cylinders 40, 50 is discharged outside through the above-mentioned outlet connector 12.
  • the air compressor unit 1 achieves the preset aims and brings important advantages.
  • a first advantage linked to the invention is due to the fact that by adopting the containment body 7, the space interposed between the cylinders 40, 50 is used to house components of the compressor 1, thereby optimising the overall dimensions.
  • a further advantage is due to the fact that by means of the containment body 7 and its lateral guards 77a, 77b a protection is actuated regarding the accidental contact with electrical elements contained inside.
  • Another advantage is due to the arrangement and shape of the intake conduit 9 which, by optimising the relative distance from the cylinders of the compressor, makes it possible to draw in cool air, not heated by contact with the heads of the cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP19162590.4A 2018-03-19 2019-03-13 Alternative twin cylinder air compressor Active EP3543528B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000003733A IT201800003733A1 (it) 2018-03-19 2018-03-19 Compressore d’aria alternativo bicilindrico

Publications (2)

Publication Number Publication Date
EP3543528A1 EP3543528A1 (en) 2019-09-25
EP3543528B1 true EP3543528B1 (en) 2021-03-03

Family

ID=62530452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19162590.4A Active EP3543528B1 (en) 2018-03-19 2019-03-13 Alternative twin cylinder air compressor

Country Status (5)

Country Link
US (1) US20190285062A1 (zh)
EP (1) EP3543528B1 (zh)
CN (1) CN110285034A (zh)
ES (1) ES2866549T3 (zh)
IT (1) IT201800003733A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116557256A (zh) * 2023-07-10 2023-08-08 耐力股份有限公司 车用无油空气压缩机

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584675A (en) * 1995-09-15 1996-12-17 Devilbiss Air Power Company Cylinder sleeve for an air compressor
GB2426556B (en) * 2005-05-17 2010-06-09 Thomas Industries Inc Pump improvements
US8246327B2 (en) * 2006-06-01 2012-08-21 Gast Manufacturing, Inc. Dual-cylinder rocking piston compressor
CN101512149B (zh) * 2006-09-05 2012-04-25 嘉德纳丹佛托马斯公司 用于压缩机或泵的流体摄入和排出配件
US8037713B2 (en) * 2008-02-20 2011-10-18 Trane International, Inc. Centrifugal compressor assembly and method
DE102009052163A1 (de) * 2009-11-06 2011-05-12 Mtu Friedrichshafen Gmbh Ansauggehäuse
JP6096474B2 (ja) * 2012-11-05 2017-03-15 シナノケンシ株式会社 圧縮機又は真空機
CN103994053B (zh) * 2014-04-16 2019-05-10 浙江鸿友压缩机制造有限公司 一种直联式无油压缩机的冷却布局构造
WO2016106469A1 (zh) * 2014-12-29 2016-07-07 浙江鸿友压缩机制造有限公司 一种直联式无油压缩机的冷却布局构造
CN105065232B (zh) * 2015-09-12 2017-11-07 浙江鸿友压缩机制造有限公司 一种双缸空气压缩机进气消声装置
CN111648937A (zh) * 2020-06-17 2020-09-11 耐力压缩机(北京)有限公司 一种轨道交通控制系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
IT201800003733A1 (it) 2019-09-19
EP3543528A1 (en) 2019-09-25
US20190285062A1 (en) 2019-09-19
CN110285034A (zh) 2019-09-27
ES2866549T3 (es) 2021-10-19

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