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US 4,734,013 AGranted
Rotary pressure intensifier
AssigneeV Tech Industries, L.P.
InventorViljo K. Valavaara
Life of this patent
Estimating the term…
Abstract
A pressure intensifier for a fluid comprises at least three piston assemblies disposed along mutually parallel axes equiangularly disposed with respect to a central axis of the intensifier and radially equidistant therefrom. Each piston assembly has two opposed high pressure cylinders and low pressure cylinders. Fluid is supplied to the low pressure cylinders and discharged through a low pressure valve operatively coupled by a swash plate to the pistons of each assembly so as to be driven thereby. A high pressure collector, optionally in the form of a closed circuit, is provided for receiving high pressure fluid from the high pressure cylinders.
Claims13
A pressure intensifier for a fluid medium and comprising:
- a stationary low pressure cylinder block portion defining two ends;
- stationary high pressure cylinder block portions located at respective ends of said low pressure cylinder block;
- at least three piston assemblies, said piston assemblies being disposed along mutually parallel axes equiangularly disposed with respect to a central axis of said intensifier and radially equidistant therefrom, each said piston assembly comprising:
- low pressure cylinder means in said low pressure cylinder block portion;
- a pair of axially aligned and opposed high pressure cylinders coaxially disposed with said low pressure cylinder means in said high pressure cylinder block portions;
- low pressure piston means disposed within said low pressure cylinder means for axial movement therein;
- and,
- a pair of high pressure pistons disposed within respective ones of said high pressure cylinders for axial movement therein, each said pair of high pressure pistons being linked to said low pressure piston means for conjoint axial movement therewith;
- low pressure fluid supply means for the supply of low pressure fluid to said low pressure cylinder means of each said piston assembly;
- low pressure fluid discharge means for the discharge of low pressure fluid from said low pressure cylinder means of each said piston assembly;
- movable low pressure valve means in said low pressure cylinder block portion and disposed along a central axis thereof within said mutually parallel axes of said piston assemblies, and being movable within said low pressure block portion, said valve means being coupled to said low pressure cylinder means of each said piston assembly and adapted to control the supply of low pressure fluid to said low pressure cylinder means of each said piston assembly from said low pressure fluid supply means and to control the discharge of low pressure fluid from said low pressure cylinder means of each said piston assembly to said low pressure fluid discharge means;
- valve drive transmission means operatively coupled to each of said piston assemblies between said two high pressure pistons of each said piston assembly, and disposed within said mutually parallel axes of said piston assemblies whereby movement of said piston assemblies in response to supply of low pressure fluid will cause movement of said low pressure valve means, and simultaneously synchronize movement of said piston assemblies;
- high pressure fluid supply means for supplying fluid to said high pressure cylinders;
- and,
- high pressure fluid collector means for receiving high pressure fluid from said high pressure cylinders.
12 more elements
A pressure intensifier for a fluid medium and comprising:
- at least three piston assemblies, said piston assemblies being disposed along mutually parallel axes equiangularly disposed with respect to a central axis of said intensifier and radially equidistant therefrom, each said piston assembly comprising:
- a pair of low pressure cylinders;
- a pair of axially aligned and opposed high pressure cylinders coaxially disposed with said low pressure cylinders;
- a pair of low pressure pistons disposed within said low pressure cylinders for axial movement therein;
- and,
- a pair of high pressure pistons disposed within respective ones of said high ressure cylinders for axial movement therein, each said pair of high pressure pistons being connected to said low pressure pistons for conjoint axial movement therewith by linkage means for transmitting axial movement therebetween;
- low pressure fluid supply means for the supply of low pressure fluid to said low pressure cylinders of each said piston assembly;
- low pressure fluid discharge means for the discharge of low pressure fluid from said low pressure cylinders of each said piston assembly;
- low pressure valve means coupled to said low pressure cylinders of each said piston assembly and adapted to control the supply of low pressure fluid to said low pressure cylinders of each said piston assembly from said low pressure fluid supply means and to control the discharge of low pressure fluid from said low pressure cylinders of each said piston assembly to said low pressure fluid discharge means;
- valve drive transmission means operatively coupled to each of said piston assemblies whereby movement of said piston assemblies in response to supply of low pressure fluid will cause movement of said low pressure valve means, and simultaneously synchronize movement of said piston assemblies;
- high pressure fluid supply means for supplying fluid to said high pressure cylinders;
- and,
- high pressure fluid collector means for receiving high pressure fluid from said high pressure cylinders.
10 more elements
A pressure intensifier for a fluid medium and comprising:
- at least three piston assemblies, said piston assemblies being disposed along mutually parallel axes equiangularly disposed with respect to a central axis of said intensifier and radially equidistant therefrom, each said piston assembly comprising:
- at least one low pressure cylinder;
- at least one axially aligned and opposed high pressure cylinder coaxially disposed with said low pressure cylinder;
- a low pressure piston disposed within said low pressure cylinder for axial movement therein;
- and
- a high pressure piston disposed within said high pressure cylinder for axial movement therein, said high pressure piston being connected to said low pressure piston for conjoint axial movement therewith;
- low pressure fluid supply means for the supply of low pressure fluid to said low pressure cylinder of each said piston assembly;
- low pressure fluid discharge means for the discharge of low pressure fluid from said low pressure cylinder of each said piston assembly;
- a swash plate operatively interconnecting said pistons of said piston assemblies and comprising a ball connected to said swash plate and movably supported in a fixed cup formed in said intensifier;
- low pressure valve means comprising a low pressure fluid supply passage, and a plurality of low pressure transfer passages, said passages opening as ports in said fixed cup and said transfer passages communicating with respective ones of said low pressure cylinders, and recesses in the surface of said ball for permitting fluid transfer between respective pairs of said ports in said cup for controling the supply of low pressure fluid to said low pressure cylinder of each said piston assembly from said low pressure fluid supply means and the discharge of low pressure fluid from said low pressure cylinder of each said piston assembly to said low pressure fluid discharge means;
- high pressure fluid supply means for supplying fluid to said high pressure cylinders;
- and
- high pressure fluid collector means for receiving high pressure fluid from said high pressure cylinders.
10 more elements
Dependencies are inferred from the claim text.