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EP0886036A2 - Moteur à pistons à air comprimé - Google Patents

Moteur à pistons à air comprimé Download PDF

Info

Publication number
EP0886036A2
EP0886036A2 EP98109823A EP98109823A EP0886036A2 EP 0886036 A2 EP0886036 A2 EP 0886036A2 EP 98109823 A EP98109823 A EP 98109823A EP 98109823 A EP98109823 A EP 98109823A EP 0886036 A2 EP0886036 A2 EP 0886036A2
Authority
EP
European Patent Office
Prior art keywords
piston
compressed air
control
cylinder
valve
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.)
Granted
Application number
EP98109823A
Other languages
German (de)
English (en)
Other versions
EP0886036A3 (fr
EP0886036B1 (fr
Inventor
Oswald Scherer
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.)
Wiwa Wilhelm Wagner GmbH and Co KG
Original Assignee
Wiwa Wilhelm Wagner GmbH and Co KG
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 Wiwa Wilhelm Wagner GmbH and Co KG filed Critical Wiwa Wilhelm Wagner GmbH and Co KG
Publication of EP0886036A2 publication Critical patent/EP0886036A2/fr
Publication of EP0886036A3 publication Critical patent/EP0886036A3/fr
Application granted granted Critical
Publication of EP0886036B1 publication Critical patent/EP0886036B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B11/00—Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type
    • F01B11/001—Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type in which the movement in the two directions is obtained by one double acting piston motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
    • F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor

Definitions

  • the invention relates to a compressed air piston engine, especially for paint sprayers, dosing pumps, grease guns and the like, with one in a piston cylinder by compressed air on its two piston surfaces alternately acted upon by a slide control and thereby oscillating piston with a piston rod that axially in a cylinder head and / or a cylinder bottom is guided in those for the compressed air inflow or outflow into / from the Piston cylinder an inlet / outlet is provided, the slide control one in a control cylinder Movable control piston and in the control cylinder Control openings are provided, each an inlet / outlet or ventilation lines for the Connect the compressed air to the control cylinder and are influenced by the control piston.
  • the invention also concerns a compressed air piston engine with each a switching valve for the compressed air in the cylinder head and the cylinder bottom that from the working piston can be actuated and switches the slide control, the switch valves one in the piston cylinder protruding from the working piston of the compressed air piston engine Have actuatable valve piston rod.
  • Such a, as a rule, single-acting pneumatic piston engine is already known and can be done without much effort can also be designed double acting, where on everyone Front side of the compressed air piston engine an implement connected.
  • the piston cylinder can the cylinder head or the cylinder bottom integrally formed be, but it is more advantageous if both the cylinder head as well as the cylinder bottom of that Piston cylinders manufactured separately and the parts afterwards Be put together, such as in the patent DE 33 42 388 C3, so that the required machining on the parts kept to a minimum can be.
  • such compressed air piston engines those for reversing the linear movement of the working piston required outside the piston cylinder provided slider controls so that the axes of the associated control piston and of the control cylinder parallel to the axis of the working piston run.
  • the slide control is either on the side of the piston cylinder set and if necessary in one piece with this executed, or it is like the Arrangement according to DE 33 42 388 C3 above the cylinder head or if necessary also below the cylinder bottom; the slide control can be used in these components be structurally integrated. Both orders are unfavorable.
  • the invention has for its object the above Disadvantages of the known compressed air piston motors described of the type specified at the beginning to eliminate and a slide control space-saving and suitable for different working strokes of the working piston to attach.
  • the object is first achieved by that the slide control in / on the cylinder head or in / on the cylinder base and is provided that the axes of the control piston and the working piston are approximately perpendicular to each other.
  • a preferred embodiment of such an inventive Air piston engine using one each by the working piston switch valve in the cylinder head and the cylinder bottom consists of that each of the changeover valves with a differential spool is provided, which consists of a first valve piston of larger and a second valve piston from smaller piston area, which is at a fixed distance are aligned in alignment on the valve piston rod the way that in the valve housing from a Air line pressure applied to the differential valve moved into a first end position in which his Valve piston rod partially in the piston cylinder protrudes.
  • the differential slide is in connection with the constant air pressure in a preferred first end position from which he is alone under the effect of the working piston on its valve piston rod is movable into a second end position - against the force acting on the differential piston from the Air pressure. In this way, a return spring be completely dispensed with if only care is taken that the piston surfaces of the differential piston Are continuously exposed to compressed air.
  • the switch valve provided axially parallel to the working piston is and in the cylinder head / bottom a circular cylindrical Carrying out the bearing of the differential slide is provided, the implementation against preferably the piston cylinder by means of a elastic closure is blocked by the Valve piston rod is pierced and on which the first Valve piston can be applied under the action of compressed air which is therefore somewhat cushioned there, so that noise and wear remain low.
  • the implementation advantageously has one threaded bush locked with a screw plug in which the second valve piston is guided which is a supply / discharge line leading into the changeover valve shuts off as long as the first valve piston is on the closure rests. This ensures that the differential slide is independent of that in the Incoming / outgoing air pressure in the first end position as long as it is not from the working piston is moved out of this.
  • Control cylinder closed on the front side by locking pieces is so that it is in the cylinder head / bottom continuous bore can be formed; the locking pieces are best threaded plugs. If on that Control piston preferably elastic stops on the face are provided, which alternately on the closure pieces stop, then the control piston even spared; the elastic design of the stops extends the life of the spool and reduces noise.
  • the supply / discharge lines from the changeover valves open into close the locking pieces so that they are off the spool cannot be influenced and this alternately the air pressure of the Compressed air source is exposed.
  • control piston occurs when there is a second control chamber on each provided on both sides of the first control chamber and alternately fluidly connected to an associated outlet is.
  • a pneumatic piston engine according to the invention according to Fig.1 essentially from a piston cylinder 1, a cylinder head 2, a cylinder base 3 and a working piston 4 and the required Control devices and compressed air lines.
  • the tubular piston cylinder 1 is between the circular disc-shaped cylinder head 2 and the like shaped cylinder base 3 clamped and is on this by means of a concentric flanged disc 21.31 centrically arrested, facing each other first End faces 22,32 of the cylinder head 2 and the cylinder bottom 3 each provided in one piece with these are.
  • a tubular air filter 5 is in a suitable one Ring groove 23 on the other (second) end face 24 of the cylinder head 2 is inserted and on the other hand closed by a filter cover 51.
  • Three Tensioning screws 6 clamp the filter cover 51 with the Air filter 5, the cylinder head 2, the piston cylinder 1 and the cylinder base 3 with each other so that the Air filter 5 and the piston cylinder 1 taut will.
  • 1, 2 is a clamping screw 6 indicated in Figure 3 is the orientation of all three clamping screws 6 can be seen.
  • the bushings 25,33 are on the one hand each an associated branch line ZL1.2 with a main line HL connected to the compressed air, which in turn comes from one omitted in the drawing and only by one Direction arrow Q illustrates compressed air source is fed with compressed air; the order is made that the compressed air is constantly in the bushings 25.33 is due.
  • the branch line ZL2 bridges outside of the piston cylinder 1 the free space between the cylinder head 2 and the cylinder bottom 3 with the help of a straight pipe section RS1, which is axially parallel to the Piston cylinder 1 is clamped between the two.
  • Both switch valves 7 working as slides are in turn arranged axially parallel to the piston cylinder 1 and have a differential slide 71, that of a first valve piston 71a larger and one second valve piston 71b of smaller diameter, which are at a distance a from each other on a common one Valve piston rod 71c are firmly attached and its two alternating end positions are indicated in Fig. 1,5, where the first End position extended and the second dashed are drawn.
  • the bushings 25.33 are of that Piston chamber 10 of the piston cylinder 1 by an elastic Closure 72 pneumatically separated, which in the Cylinder head 2 or the cylinder base 3 is attached and has a guide bore 72a in which the valve piston rod 71c is axially movable. she can protrude into the piston chamber 10, so that then its free end face 71d in the working area of the working piston 4 is located.
  • bushings 25, 33 are from the surroundings U of a screw plug 73 with a central Vent hole 73a separated.
  • On the screw plug 73 is an aligned threaded bushing 74 a guide cylinder 74a in which the second, smaller one Valve piston 71b is guided in a slightly longitudinally movable manner.
  • the first, larger valve piston 71a however, the is directly on the smooth cylinder surface Carried out 25.33.
  • piston chamber 10 is located a combined one on each side of the working piston 4 Inlet / outlet 26, 34 for the compressed air in the cylinder head 2 and the cylinder bottom 3.
  • the inlets / outlets are 26, 34 by means of working lines AL1.2 with the slide control 8 pneumatically connected, the working line AL2 the free via a (second) straight pipe section RS2 Space between the cylinder head 2 and the cylinder bottom 3, clamped between the two, bridged.
  • Directional arrows R1 (Fig.2) indicate the oscillating exposure of the working piston 4.
  • the slide control 8 is best in Fig.3 too recognize in which they are shown cut in the middle is.
  • control cylinder 81 In one in the form of a socket in the cylinder head 2 inserted control cylinder 81 is a control piston 82 axially easy to move.
  • the control cylinder 81 extends transversely to the main axis HA of the Air piston engine and is (Fig.1) from this around the dimension e spaced in such a way that the piston rod 41 is not affected in its axial position.
  • the supply / discharge lines open in the vicinity of the closure pieces 83 Z1.2 from the changeover valves 7 so that they, not lockable, always have an associated face of the control piston 82 alternately apply compressed air can.
  • the working piston 4 and the two valve pistons 71a, 71b each with only one piston ring are equipped on their lateral surfaces in the slide control 8 a total of five against each other areas to be sealed by four located on the control piston 82 and approximately the same Piston rings arranged axially apart from each other pneumatically in corresponding annular grooves 82a are separated.
  • control piston 82 annular control chambers 82b, c recessed, which two adjacent control openings 81a-c with each other flow connections in which the main line HL, the working lines AL1.2 and ventilation lines EL flow out; the vent lines EL lead on the other hand indicated in the environment U via the air filter 5 by arrows R2 (Fig.2).
  • the differential slide 71 are under the influence of the constant pending via the branch lines ZL1,2 Air pressure from the main line HL so long with your first valve piston 71a on the respective closure 72 at how the associated, overly in the piston chamber 10 projecting valve piston rod 71c not from the working piston 4 is charged.
  • undressed drawn end position of the differential slide 71 are the respective supply / discharge lines Z1.2 from the associated ones Branch lines ZL1,2 separated and vented via the vent holes 73a.
  • the working piston 4 transports the differential slide 71 into the dashed second end position, then compressed air gets into the supply / discharge lines Z1.2, so that the spool 82 axially into its other End position comes, and the vent holes 73a are cordoned off.
  • the supply / discharge lines Z1.2, accordingly in the first end position of the differential slide 71 act as venting discharges, end on both sides of the control piston 82 and cannot be influenced by this in the control cylinder 81 (Fig.3).
  • the control piston 82 connects to its first control chamber 82b, as indicated in Figure 3, with the Main line HL related control opening 81a one of the control openings 81b, in which one of the working lines AL1.2 opens.
  • the control chamber 82b is consequently always flowing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Coating Apparatus (AREA)
  • Nozzles (AREA)
  • Valve Device For Special Equipments (AREA)
  • Compressor (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP98109823A 1997-06-19 1998-05-29 Moteur à pistons à air comprimé Expired - Lifetime EP0886036B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29710807U 1997-06-19
DE29710807U DE29710807U1 (de) 1997-06-19 1997-06-19 Druckluft-Kolbenmotor

Publications (3)

Publication Number Publication Date
EP0886036A2 true EP0886036A2 (fr) 1998-12-23
EP0886036A3 EP0886036A3 (fr) 1999-06-16
EP0886036B1 EP0886036B1 (fr) 2003-07-23

Family

ID=8041940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109823A Expired - Lifetime EP0886036B1 (fr) 1997-06-19 1998-05-29 Moteur à pistons à air comprimé

Country Status (8)

Country Link
US (1) US6123008A (fr)
EP (1) EP0886036B1 (fr)
JP (1) JPH1162501A (fr)
KR (1) KR19990007134A (fr)
CN (1) CN1203322A (fr)
AT (1) ATE245763T1 (fr)
DE (2) DE29710807U1 (fr)
TW (1) TW408213B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2805313A1 (fr) * 1998-12-28 2001-08-24 Schmidt & Co Gmbh Kranz Pompe hydraulique mue pneumatiquement
CN102859194A (zh) * 2010-01-29 2013-01-02 英格索尔-兰德公司 装有模块化附加调节器的空气马达

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6951163B1 (en) 2001-10-05 2005-10-04 Nordson Corporation Shaft coupling and shifting mechanism for pneumatic pump
US6868774B2 (en) 2001-10-05 2005-03-22 Nordson Corporation Shaft coupling and shifting mechanism for pneumatic pump
US8568112B2 (en) * 2005-07-29 2013-10-29 Graco Minnesota Inc. Reciprocating piston pump with air valve, detent and poppets
US8474363B2 (en) 2011-07-03 2013-07-02 Vincent M. Kelly Axial piston and valve shaft fluid engine
CN103764950B (zh) 2011-09-09 2017-02-15 英格索尔-兰德公司 具有可编程逻辑控制器接口的空气马达及改造空气马达的方法
CN103206252B (zh) * 2012-09-06 2015-09-16 祥天控股（集团）有限公司 可变多缸空气动力发动机的控制机构
US9879660B2 (en) * 2014-06-26 2018-01-30 Springboard Biodiesel, Llc Pump for removing liquids from vessels under vacuum
FR3031134B1 (fr) * 2014-12-26 2018-02-16 Exel Industries Moteur a air comprime et pompe comprenant un tel moteur
JP2016156405A (ja) * 2015-02-23 2016-09-01 アネスト岩田株式会社 パイロットバルブ
CN107335558A (zh) * 2016-11-24 2017-11-10 宁波大叶园林设备股份有限公司 发动机驱偏滚柱锥柱塞的氟塑铍青铜胶膜套对数阀喷雾泵
CN106622742A (zh) * 2016-11-24 2017-05-10 宁波大叶园林设备股份有限公司 电动机驱偏滚珠锥柱塞具氟注塑铝青铜圈对数阀的喷雾泵
KR200492412Y1 (ko) 2018-07-11 2020-10-08 김광석 차량용 접이식 발판장치
CN109296583A (zh) * 2018-10-09 2019-02-01 上海泰昌健康科技股份有限公司 一种迷你气缸及应用其的气路结构
DE102019113640B3 (de) * 2019-05-22 2020-09-17 Heraeus Medical Gmbh Differenzdruckmotor und Verfahren zum Betreiben eines Differenzdruckmotors
CN110404707B (zh) * 2019-08-28 2021-02-12 浙江万盛机械有限公司 一种球阀喷漆设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342388A1 (de) 1983-11-24 1985-06-05 WiWa Wilhelm Wagner GmbH & Co KG, 6335 Lahnau Luftmotor fuer farbspritzgeraete, fettpressen und dergleichen

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Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342388A1 (de) 1983-11-24 1985-06-05 WiWa Wilhelm Wagner GmbH & Co KG, 6335 Lahnau Luftmotor fuer farbspritzgeraete, fettpressen und dergleichen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2805313A1 (fr) * 1998-12-28 2001-08-24 Schmidt & Co Gmbh Kranz Pompe hydraulique mue pneumatiquement
CN102859194A (zh) * 2010-01-29 2013-01-02 英格索尔-兰德公司 装有模块化附加调节器的空气马达
CN102859194B (zh) * 2010-01-29 2015-10-07 英格索尔-兰德公司 装有模块化附加调节器的空气马达

Also Published As

Publication number Publication date
DE29710807U1 (de) 1997-08-28
EP0886036A3 (fr) 1999-06-16
CN1203322A (zh) 1998-12-30
JPH1162501A (ja) 1999-03-05
EP0886036B1 (fr) 2003-07-23
ATE245763T1 (de) 2003-08-15
TW408213B (en) 2000-10-11
KR19990007134A (ko) 1999-01-25
DE59809063D1 (de) 2003-08-28
US6123008A (en) 2000-09-26

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