AT293883B - Valveless liquid pump - Google Patents

Valveless liquid pump

Info

Publication number
AT293883B
AT293883B AT716270A AT716270A AT293883B AT 293883 B AT293883 B AT 293883B AT 716270 A AT716270 A AT 716270A AT 716270 A AT716270 A AT 716270A AT 293883 B AT293883 B AT 293883B
Authority
AT
Austria
Prior art keywords
liquid pump
piston
valveless
valveless liquid
opening
Prior art date
Application number
AT716270A
Other languages
German (de)
Inventor
Ernst Ing Thiele
Original Assignee
Ernst Ing Thiele
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 Ernst Ing Thiele filed Critical Ernst Ing Thiele
Priority to AT716270A priority Critical patent/AT293883B/en
Application granted granted Critical
Publication of AT293883B publication Critical patent/AT293883B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • 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
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/20—Other positive-displacement pumps
    • F04B19/22—Other positive-displacement pumps of reciprocating-piston type
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Ventillose Flüssigkeitspumpe 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 dgl.und scharfkantig an die   Zylinderwand --4-- an.   Der übergang kann aber selbstverständlich auch abgerundet sein. Die Wand der   Austrittsöffnung-7-ist   nach aussen konisch erweitert, wobei diese Erweiterung insbesondere bei dünnwandigen Stirnplatten auch nur als Facette ausfallen kann. Dadurch ergibt der   Kolben--2--einen   Strömungskanal, welcher in der Förderrichtung gesehen über fast die gesamte Kolbenlänge im wesentlichen gleichbleibenden Querschnitt hat, dann plötzlich stark verjüngt wird und sich zuletzt wieder etwas erweitert. 
 EMI2.2 
 



   Die beschriebene Pumpe arbeitet in folgender Weise :
Bei der Kolbenbewegung in der Richtung auf die Auffangöffnung --8-- wird die zwischen dem   Kolben --2-- und   der   Auffangöffnung     Kanal-9--eingeschlossene   Flüssigkeit verdrängt und strömt teils durch die Auffangöffnung --8-- hindurch, zum geringen Teil jedoch wegen der Trägheit der in der Förderrichtung fliessenden Wassersäule durch den   Förderkanal-3-.   Bei der Umkehr der Kolbenbewegung wird der zwischen dem   Kolben --2-- und   der Auffangöffnung 
 EMI2.3 
 Flüssigkeitssäule und die Kolbenbewegung gegen diese Strömungsrichtung, tritt aus der Öffnung ein Strahl aus, welcher in die Auffangöffnung --8-- zielt und das   Zurückströmen   von Flüssigkeit aus derselben verhindert. 



   Durch die Formgebung des   Förderkanals --3-- mit   der   Austrittsöffnung --7-- wird   einerseits während des Verdrängerhubes die Turbulenz des austretenden Strahles begünstigt, anderseits der Strömungswiderstand während des Ansaughubes herabgesetzt. Es wird erzielt, dass bei geringerer Neigung zur Kavitation der Wirkungsgrad bis auf das zweifache des Leistungsgrades gleichartiger bekannter Pumpen gesteigert werden kann. 



   Selbstverständlich können im Rahmen der Erfindung verschiedene konstruktive Abänderungen vorgenommen werden, so ist es beispielsweise möglich, den   Kolben --2-- wie   in Fig. 2 dargestellt, mit 
 EMI2.4 
 motorischer Antrieb vorgesehen sein. 



   PATENTANSPRÜCHE :
1. Ventillose Flüssigkeitspumpe mit oszillierendem, einen axialen Kanal aufweisenden Kolben und einer im wesentlichen koaxialen Auffangöffnung in Form einer Auffangdüse od. dgl., wobei der 
 EMI2.5 




   <Desc / Clms Page number 1>
 



  Valveless liquid pump
 EMI1.1
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 The like and sharp-edged on the cylinder wall --4--. The transition can of course also be rounded. The wall of the outlet opening 7 is widened conically towards the outside, this widening also being able to turn out only as a facet, particularly in the case of thin-walled end plates. As a result, the piston - 2 - results in a flow channel which, viewed in the conveying direction, has an essentially constant cross section over almost the entire length of the piston, then suddenly tapers sharply and finally widens again somewhat.
 EMI2.2
 



   The pump described works in the following way:
When the piston moves in the direction of the collecting opening --8--, the liquid trapped between the piston --2-- and the collecting opening channel 9 - is displaced and partly flows through the collecting opening --8--, to a small extent Partly because of the inertia of the water column flowing in the conveying direction through the conveying channel 3-. When the piston movement is reversed, that between the piston --2-- and the collecting opening
 EMI2.3
 Liquid column and the piston movement against this direction of flow, a jet emerges from the opening, which aims into the collecting opening --8-- and prevents liquid from flowing back out of it.



   The shape of the delivery channel --3-- with the outlet opening --7-- on the one hand promotes the turbulence of the exiting jet during the displacement stroke and on the other hand reduces the flow resistance during the suction stroke. It is achieved that with a lower tendency to cavitation, the efficiency can be increased up to twice the efficiency of known pumps of the same type.



   Of course, various design modifications can be made within the scope of the invention, for example it is possible to use the piston --2 - as shown in FIG
 EMI2.4
 motor drive can be provided.



   PATENT CLAIMS:
1. Valveless liquid pump with an oscillating piston having an axial channel and a substantially coaxial collecting opening in the form of a collecting nozzle or the like
 EMI2.5
AT716270A 1970-08-06 1970-08-06 Valveless liquid pump AT293883B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT716270A AT293883B (en) 1970-08-06 1970-08-06 Valveless liquid pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT716270A AT293883B (en) 1970-08-06 1970-08-06 Valveless liquid pump

Publications (1)

Publication Number Publication Date
AT293883B true AT293883B (en) 1971-10-25

Family

ID=3593294

Family Applications (1)

Application Number Title Priority Date Filing Date
AT716270A AT293883B (en) 1970-08-06 1970-08-06 Valveless liquid pump

Country Status (1)

Country Link
AT (1) AT293883B (en)

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