EP0062933A1 - Pressurized air motor provided with an inlet chamber of variable volume - Google Patents

Pressurized air motor provided with an inlet chamber of variable volume Download PDF

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Publication number
EP0062933A1
EP0062933A1 EP82200280A EP82200280A EP0062933A1 EP 0062933 A1 EP0062933 A1 EP 0062933A1 EP 82200280 A EP82200280 A EP 82200280A EP 82200280 A EP82200280 A EP 82200280A EP 0062933 A1 EP0062933 A1 EP 0062933A1
Authority
EP
European Patent Office
Prior art keywords
inlet chamber
plunger
pressurized air
chamber
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.)
Ceased
Application number
EP82200280A
Other languages
German (de)
English (en)
French (fr)
Inventor
Giorgio Rebolini
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
Publication of EP0062933A1 publication Critical patent/EP0062933A1/en
Ceased 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
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines
    • 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
    • F01B25/00—Regulating, controlling, or safety means
    • F01B25/02—Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity

Definitions

  • the present invention generally relates to the pressurized aeriform substance piston motors, and,more specifically to a motor or the mentioned type which has been improved from the operative point of view.
  • the known pressurized air piston motors comprise at least a cylinder-piston assembly of two stroke operation and provided wi tzpressurized air inlet and outlet valves.
  • the piston is coupled to the crankshaft by means of a conventional connecting rod-crank mechanism.As these motors are operated by bottle pressurized air,it is necessary to provide the bottles with pressure reducing means in order to bring the supply pressure to the desired value.
  • a motor or the above type comprising at least to blade air motors coupled to the driveahart,saia air motors acting as cascade coupled pressure reducing means effective to simultaneously provide kinetic energy.
  • the volume included between the cylinder head and the piston upper dead point is greater than that or the two blade air motors,and the volumes of the three motors are rated in such a way as to provide three consecutive pressure reductions.
  • the volumes of the three motors are designed in such a way as to provide a volumetric air passage for each revolution of the crankshaft,said passage being equal for all of the three motors.
  • the task of the present invention is to eliminate the thereinabove mentioned drawbacks, by providing such a piston motor effective to use either pressurized air or steam and to operate as far as the pressurized fluid source is completely exhausted,without the necessity of carrying out periodic adjustings of the motor supply pressure.
  • a piston motor characterized in that it comprises an inlet chamber located in the cylinder head and having a variable volume,means. for varying said volume depending on the pressurized air source pressure,an inlet needle valve communicating to said inlet chamber base portion for supplying pressurized air thereto,and a discharging valve for discharging the expanded air.
  • variable volume inlet chamber consists of a small cylinder therein a plunger tightly slides which is oppositely located with respect to the motor piston,the latter being movable in a tight way in an expansion chamber,said plunger separating the small cylinder into two opposite chambers,one thereof forms said inlet chamber.
  • the means for varying the inlet chamber volume consist or mechanical means,operated by the same system pressure.
  • said means may be of hydraulic or pneumatic type, in which case the small cylinder chamber opposite to the inlet chamber forms the driving chamber for the plunger movable in said small cylinder,in order to vary the volume of said chamber in an inversely proportional relationship with respect to the supply pressure.
  • the pressurized air motor comprises a cylinder 1 therein a piston 2 is able or sliding, said piston being provided with piston rings 3 and defining an expansion chamber in said cylinder.
  • the cylinder 1 has a head 4 provided with a discharging outlet 6 therein the discharging valve 8 is located, the inlet of the air being controlled by a needle valve 7.
  • the cylinder-piston assembly has a two stroke type of operation.
  • the piston 2 is coupled to the driveshaft 12 by means or the connecting rod 13 and crank 14, by the gooseneck of said driveshaft 12.
  • the needle valve 7 is coupled,through a pipe 5,to a tank,acting as a pressure equalizer for the piston 2,wich latter operates by impulses, or it is directly coupled to a pressurized air bottle 30,as it is shown in the drawing.
  • an inlet chamber in the form of a small cylinder, therein a plunger 19 slides,dividing said small cylinder into two chambers, that is the inlet chamber 22 and an opposite chamber 23.
  • the plunger 19 is provided with a resilient plunger ring,for a tight. engagement in said inlet chamber defining small cylinder 15.
  • the needle valve 7 is operated by the tappet 9 through the rocking lever 10.
  • the nozzle of said needle valve is so located as to communicate to the base portion of the inlet chamber 22,in the space between the piston 2 and plunger 19.
  • the pressurized air bottle 30 (or the pressure equalizing tank) is also provided with a small cylinder 16 therein a plunger 17 slides, the latter being also provided with a sealing plunger ring ana being normally held at the lower position thereof by means of a biassing spring 20,calibrated in a proportional way to the pressure in the bottle 30.
  • the plunger 17 separates the small cylinder 16 into two chambers 24 and 25, said chamber 24 communicating with said pressurized air bottle 30.
  • the two plungers 19 and 17 in the small cylinders 15 and respectively 16 are positively coupled to one another,thereby as the plunger 17 is at the upper position thereof,in which it is held by the pressure in the bottle 30,the plunger 19 is in the lower position thereof, the inlet chamber volume being thus minimum.
  • the upper chamber 25 of the small cylinder 16 is coupled to the upper chamber 23 of the small cylinder 15 which is applied in the head 4 by means of a duct 18, the two mentioned chambers and said duct 18 being filled with oil thereby the rising of the plunger 17 causes a corresponding lowering of the plunger 19.
  • the oil contained in the upper chamber 25 of the small cylinder 16 will cause the plunger 19 of the small cylinder 15 to be displaced to the lower position thereof,in such a way as to define a minimum volume inlet chamber.
  • the needle valve 7 will be opened,which will communicate said 200 atm pressure to this minimum volume,thereby causing the motor piston 2 to lower.Ae the piston 2 is rised again, the discharging valve8will be opened ana the air expanded during the active stroke of the piston will be dischargea to the outside.
  • the plunger 17 of said small cylinder 16 will be lowered with a consequent raising of the plunger 19 in the small cylinder 15,thereby the volume of the inlet chamber 22 will increase depending on the movement of the plunger 17.
  • the needle valve 7 is opened, a greater air volume,at a smaller pressure,will pass to the inlet chamber, which will act again on the piston 2 in such a way as to cause the latter to lower again, the cycle being repeated as far as the pressurized air in the bottle has been completely consumed.
  • Another important aspect or the present invention consists or the fact that the motor is supplied with pressurized substances,in particular steam,which affords the possibility or obtaining from the steam mechanical or electric power.
  • the heat remaining in the motor may be used for heating spaces or supplying steam heated apparatus or systems.
  • the instant motor is effective to recover thermal power and operate with aeriform substances at a pressure from 5 to 200 atms.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP82200280A 1981-04-10 1982-03-05 Pressurized air motor provided with an inlet chamber of variable volume Ceased EP0062933A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21058/81A IT1137334B (it) 1981-04-10 1981-04-10 Motore ad aria compressa con camera d'espansione a volume variabile in funzione della pressione d'alimentazione
IT2105881 1981-04-10

Publications (1)

Publication Number Publication Date
EP0062933A1 true EP0062933A1 (en) 1982-10-20

Family

ID=11176079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82200280A Ceased EP0062933A1 (en) 1981-04-10 1982-03-05 Pressurized air motor provided with an inlet chamber of variable volume

Country Status (2)

Country Link
EP (1) EP0062933A1 (it)
IT (1) IT1137334B (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1162353A2 (en) * 2000-06-07 2001-12-12 Amos Bonazzoli High efficiency engine
WO2003085258A1 (fr) * 2002-04-04 2003-10-16 Keming Hu Moteur gaz froid sans combustion
DE102004014518A1 (de) * 2004-03-25 2005-10-20 Eduard Menrath Druckluftbetriebener Kolbenmotor
WO2009000107A1 (fr) * 2007-06-26 2008-12-31 Yu-Hun Nien Machine génératrice d'énergie
CN102146808A (zh) * 2010-02-05 2011-08-10 曼商用车辆奥地利股份公司 使一个蒸汽机的活塞式膨胀器运行的方法
WO2012151724A1 (zh) * 2011-05-11 2012-11-15 Chen Gang 一种发动机的进气配气装置及其构成的发动机
WO2012052034A3 (es) * 2010-10-18 2013-06-27 Daniel Matos Cuevas Un sistema para adaptar un motor de combustión interna para que funcione con aire o gas comprimido

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191003966A (it) * 1900-01-01
FR345741A (fr) * 1904-08-20 1904-12-09 Abel Pifre Et Cie Soc Réglage du régime des moteurs à explosions
FR433692A (fr) * 1911-08-28 1912-01-13 Remy Joubert Stabilisateur pour aéroplanes
DE430449C (de) * 1924-08-19 1926-06-16 Emil Wurmbach Verfahren und Vorrichtung zur Arbeitsuebertragung mittels Kompressors und Druckluftmaschine
GB263894A (en) * 1925-07-10 1927-01-10 Harry Bentley Improvements in and relating to diesel and like internal combustion engines
US1812572A (en) * 1927-05-11 1931-06-30 Henry H Harris Adjustable combustion chamber control
DE582620C (de) * 1926-10-14 1935-03-04 Karl Zur Nieden Druckluftmotor, bei dem der Auslass durch vom Kolben kurz vor Ende des Ausdehnungshubes ueberlaufene Schlitze der Zylinderwand gesteuert wird
US3978672A (en) * 1973-12-05 1976-09-07 Propulsion Machinery Corporation Gas operated engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191003966A (it) * 1900-01-01
FR345741A (fr) * 1904-08-20 1904-12-09 Abel Pifre Et Cie Soc Réglage du régime des moteurs à explosions
FR433692A (fr) * 1911-08-28 1912-01-13 Remy Joubert Stabilisateur pour aéroplanes
DE430449C (de) * 1924-08-19 1926-06-16 Emil Wurmbach Verfahren und Vorrichtung zur Arbeitsuebertragung mittels Kompressors und Druckluftmaschine
GB263894A (en) * 1925-07-10 1927-01-10 Harry Bentley Improvements in and relating to diesel and like internal combustion engines
DE582620C (de) * 1926-10-14 1935-03-04 Karl Zur Nieden Druckluftmotor, bei dem der Auslass durch vom Kolben kurz vor Ende des Ausdehnungshubes ueberlaufene Schlitze der Zylinderwand gesteuert wird
US1812572A (en) * 1927-05-11 1931-06-30 Henry H Harris Adjustable combustion chamber control
US3978672A (en) * 1973-12-05 1976-09-07 Propulsion Machinery Corporation Gas operated engine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1162353A2 (en) * 2000-06-07 2001-12-12 Amos Bonazzoli High efficiency engine
EP1162353A3 (en) * 2000-06-07 2002-12-18 Amos Bonazzoli High efficiency engine
WO2003085258A1 (fr) * 2002-04-04 2003-10-16 Keming Hu Moteur gaz froid sans combustion
DE102004014518A1 (de) * 2004-03-25 2005-10-20 Eduard Menrath Druckluftbetriebener Kolbenmotor
DE102004014518B4 (de) * 2004-03-25 2010-02-25 Eduard Menrath Druckluftbetriebener Kolbenmotor sowie ein Ventil, welches einen Ventilkörper mit einem Ventilkopf, einen Ventilschaft und einen Ventilfuß aufweist
WO2009000107A1 (fr) * 2007-06-26 2008-12-31 Yu-Hun Nien Machine génératrice d'énergie
CN102146808A (zh) * 2010-02-05 2011-08-10 曼商用车辆奥地利股份公司 使一个蒸汽机的活塞式膨胀器运行的方法
CN102146808B (zh) * 2010-02-05 2017-04-12 曼卡车和巴士奥地利股份公司 使一个蒸汽机的活塞式膨胀器运行的方法
WO2012052034A3 (es) * 2010-10-18 2013-06-27 Daniel Matos Cuevas Un sistema para adaptar un motor de combustión interna para que funcione con aire o gas comprimido
WO2012151724A1 (zh) * 2011-05-11 2012-11-15 Chen Gang 一种发动机的进气配气装置及其构成的发动机
WO2012152051A1 (zh) * 2011-05-11 2012-11-15 Chen Gang 发动机进气配气装置及其构成的发动机

Also Published As

Publication number Publication date
IT1137334B (it) 1986-09-10
IT8121058A0 (it) 1981-04-10

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