WO2014074828A1 - Compresseur ayant un piston en graphite placé dans un cylindre en verre - Google Patents

Compresseur ayant un piston en graphite placé dans un cylindre en verre Download PDF

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Publication number
WO2014074828A1
WO2014074828A1 PCT/US2013/069164 US2013069164W WO2014074828A1 WO 2014074828 A1 WO2014074828 A1 WO 2014074828A1 US 2013069164 W US2013069164 W US 2013069164W WO 2014074828 A1 WO2014074828 A1 WO 2014074828A1
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WO
WIPO (PCT)
Prior art keywords
compressor
glass cylinder
connecting rod
piston
hollow interior
Prior art date
Application number
PCT/US2013/069164
Other languages
English (en)
Inventor
Jeffery B. Moler
Ben BOOR
Original Assignee
Viking At, Llc
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 Viking At, Llc filed Critical Viking At, Llc
Priority to US14/440,612 priority Critical patent/US20150337823A1/en
Publication of WO2014074828A1 publication Critical patent/WO2014074828A1/fr

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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
    • F04B39/0005—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 adaptations of pistons
    • 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
    • F04B39/02—Lubrication
    • F04B39/0215—Lubrication characterised by the use of a special lubricant
    • 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
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
    • 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
    • F04B39/0005—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 adaptations of pistons
    • F04B39/0016—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 adaptations of pistons with valve arranged in the piston
    • 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
    • F04B39/0005—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 adaptations of pistons
    • F04B39/0022—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 adaptations of pistons piston rods
    • 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
    • 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
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/02—Glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0804—Non-oxide ceramics
    • F05C2203/0808—Carbon, e.g. graphite

Definitions

  • TITLE Compressor Having A Graphite Piston In A Glass Cylinder
  • the present invention relates in general to the field of gas compressors.
  • Compressors are known in the art. However, such compressors do not operate without a lubricant by utilizing a graphite piston in a glass cylinder.
  • the present invention provides embodiments of compressors with several advantages over the prior art including improved transportability, reduced size, reduced power consumption, operation with little or no lubrication, and increased operational life.
  • Embodiments of the present invention provide a compressor with a glass cylinder having a hollow interior.
  • a graphite piston is situated within the glass cylinder, with a connecting rod attached to the graphite piston.
  • a cylinder head seals one end of the glass cylinder and has at least one exhaust valve in operable connection with the hollow interior of the glass cylinder.
  • At least one inlet valve is in operable connection with the hollow interior of the glass cylinder.
  • the inlet valves are mounted within the cylinder head.
  • the inlet valves are mounted on the graphite piston.
  • Inlet and exhaust valves may also be situated in connection with lines connected to the compressor where a simpler cylinder head design is desirable.
  • FIG. 1 is an example of a compressor assembly of the present invention with the glass cylinder shown in cross section to expose interior portions of the compressor;
  • FIG. 2 is a cross-section view of the embodiment illustrated in Fig. 1 ;
  • FIG. 3 is an exploded perspective view the embodiment illustrated in Fig. l ;
  • Fig. 4 is a cross-section view of an alternate embodiment of a compressor according to the present invention in which the inlet valve is mounted on the graphite piston;
  • FIG. 5 is a perspective view of the piston assembly of the embodiment illustrated in Fig. 4;
  • FIG. ⁇ is a perspective view of certain components of a cylinder head assembly suitable for use with the embodiment shown in Fig. 4;
  • FIG. 7 is a perspective view of the cylinder head of the embodiment illustrated in Fig. 1 ;
  • FIG. 8 is an alternate perspective view of the cylinder head of the embodiment illustrated in Fig. 1 ;
  • FIG. 9 is an exploded perspective view of an embodiment of a compressor according to the present invention having an electric motor and utilizing at least one low friction ring on the graphite piston;
  • FIG. 1 0 is a perspective view of an embodiment of a compressor according to the present invention in which the glass cylinder is shown in cross-section and in which a smart material actuator is operably connected to the connecting rod driving the graphite piston .
  • adapted shall mean sized, shaped, configured, dimensioned, oriented and arranged as appropriate.
  • different embodiments may comprise the same or similar components. Where the same components are used in different embodiments, the same reference number may be used. Where components in different embodiments have a comparable structure, but are not necessarily common or identical parts, a similar number is used, but with a differing initial first digit, but common second and third digits.
  • cylinder heads 1 40, 240, 540, and 640 are examples of similar structures adapted for use in different embodiments of compressors 1 00, 200, 500, 600 of the present invention, but need not be interchangeable parts.
  • the various embodiments of the present invention for gas compression may be applicable to various operations used in numerous industries.
  • certain compressor embodiments may be utilized to pump air through a nitrogen filter in order to provide nitrogen.
  • the nitrogen may be used for many purposes, including food refrigeration and preservation.
  • nitrogen may be fed to a vegetable drawer.
  • Embodiments may be utilized to compress refrigerant for a personal cooling device. Such an embodiment may be adapted for a soldier. An evaporator may be carried near the compressor in a neck pad or vest in contact with the soldier's body. [0021 ] Certain embodiments may be utilized to pump air through a filter in order to scavenge oxygen. The generated oxygen may be provided to a person for health reasons or to assist in high-altitude activities, such as skiing. Other embodiments may be used to inflate bladders in vehicle seats or to drive tools and machines.
  • Embodiments of the compressor may be used with an electric motor or an actuator, which may operate at resonance.
  • a brush less DC motor may be preferred for embodiments that need to operate at slower speeds.
  • Such motors may be suitable for use with compressors having passive valves, such a reed valves.
  • Resonant Piezo drive systems may operate at higher frequencies and may optionally use actively actuated valves.
  • a brushless DC motor may be lower cost alternative.
  • other DC or AC motors can be used for such applications, such as conventional brushed motors.
  • An embodiment of the present invention comprises a compressor assembly that utilizes a glass cylinder with a graphite piston .
  • the glass cylinder preferably comprises borosilicate glass such as Pyrex, but may also be formed of tempered glass, or other variations of glass materials known in the art that have thermal characteristics similar to those of Pyrex.
  • An advantage of such an assembly is that the compressor may operate with minimal or zero lubricant, such as oil or grease.
  • the lack of a lubricant in the compressor avoids contamination of the compressed gases. Contaminants into the air stream of lubricated compressors may include excessive oil vapor and carbon monoxide. Such impurities in the exiting gases may be harmful, especially if the gases are expected to be inhaled, and may require filtering before use.
  • Another advantage of the disclosed invention is the small size and light weight of the compressor. Accordingly, embodiments may be easily carried by a user. Transportability may be a critical feature for compressors that are intended to be carried by ill, weak or elder users that require an oxygen supply. Such compressors provide mobility without the burden of transporting heavy oxygen tanks. The compact size of certain embodiments allows the compressors to be used by skiers and soldiers.
  • Embodiments used with actuators may also operate at resonance to provide additional efficiencies.
  • Figure 1 illustrates an embodiment of the present invention that comprises a compressor 1 00 utilizing a glass cylinder 1 1 0 with a graphite piston 1 20. While the piston may be of any convenient graphite material, fine-grained graphite is often suitable because of its strength and performance characteristics.
  • the graphite piston 1 20 traverses a length of the glass cylinder 1 1 0 within the hollow interior of glass cylinder 1 1 0.
  • Graphite piston 1 20 is operably attached to connecting rod 1 30 which may in turn be attached to a movement means (not illustrated) adapted to repeatedly urge graphite piston 1 20 back and forth in a transverse motion within glass cylinder 1 1 0.
  • Cylinder head 1 40 seals against on end of glass cylinder 1 1 0 with upper seal 1 46 (shown in Fig. 2) creating a seal.
  • Upper seal 1 46 may be any suitable material for forming a substantially airtight seal between cylinder head 1 40 and class cylinder 1 1 0. Without limitation rubber and silicone such as are commonly used in the manufacture of gaskets are examples of suitable mateials for upper seal 1 46.
  • Fasteners such as bolts (not illustrated in Fig. 1 ) may conveniently pass through holes around the perimeter of cylinder head 140 to a base (not illustrated) in order to apply a clamping pressure against upper seal 1 46.
  • Cylinder head 1 40 has at least one outlet 1 60 through which compressed material may pass when compressor 1 00 is in operation.
  • inlet 1 50 and second inlet 152 are in operatble connection with the hollow interior of glass cylinder 1 1 0 and enable material to flow into glass cylinder 1 1 0 when connecting rod 1 30 urges graphite piston 1 20 away from cylinder head 1 40.
  • alternate embodiments of the present invention may include a single inlet or a plurality of inlets as needed to achieve the necessary flow characteristics for a given application .
  • Lower seal 1 70 partially seals glass cylinder 1 1 0 but allows connecting rod 1 30 to move freely during compressor operation. Where fully sealed operation is required (such as when compressing caustic materials) a bellows (not illustrated) can be used to provide a movable seal between connecting rod 1 30 and glass cylinder 1 1 0.
  • Cylinder head 1 40 may be formed of any material capable of withstanding the pressure and thermal constraints of the desired compressor application. Without limitation, steel, aluminum, brass and stainless steel are examples of suitable materials.
  • exhaust valve 161 may conveniently be mounted in cylinder head 140 with the use of valve retaining plate 144. It can further be seen that connecting rod 130 may conveniently be operably attached to graphite piston 120 with piston T-nut 125 and spacer 127, each adapted to retain graphite piston 120 to connecting rod 130.
  • inlet valve 151 and second inlet valve 153 are situated below inlet 150 and second inlet 152 respectively, and are held in place with valve retaining plate 144, which may conveniently be secured to cylinder head 140 with fasteners 145.
  • exhaust valve 161 may conveniently be situated beneath outlet 160 and also retained in position by valve retaining plate 144.
  • valve 161 shows inlet valve 151, second inlet valve 153, and exhaust valve 161 as passive reed valves.
  • inlet valve 151 Upon connecting rod 130 moving graphite piston 120 toward cylinder head 140, pressure is asserted on material within glass cylinder 110. When such pressure reaches a point higher than the back pressure at outlet 160, and the difference is sufficient to operate exhaust valve 161, exhaust valve 161 opens and a portion of the material is expelled out exhaust valve 161.
  • pressure within glass cylinder 110 is reduced. Exhaust valve 161 then closes to prevent back flow from outlet 160.
  • Inlet valve 151 and second inlet valve 1 53 open to allow additional material to be drawn in through inlet 1 50 and second inlet 1 52.
  • graphite piston 1 20 reverses, the increase in pressure closes inlet valve 1 51 and second inlet valve 1 53 and opens exhaust valve 1 61 as discussed above.
  • inlet and/or exhaust valves can be varied according the needs of a particular application. In certain embodiments it may also be convenient to locate inlet and/or exhaust valves in lines connected to the compressor as opposed to in the cylinder head or piston assembly, as will be apparent to those of skill in the art.
  • FIG. 4 shows compressor 200, another preferred embodiment of a compressor according to the present invention .
  • cylinder head 240 comprises a single outlet 260.
  • Valve retaining plate 244 captures exhaust valve 261 in cylinder head 240 such that exhaust valve 261 is in operatble connection with the hollow interior of glass cylinder 21 0.
  • Graphite piston 220 is secured by piston T-Nut 225.
  • Inlet valve 251 is mounted in piston T-Nut 225.
  • Inlet 250 allows material to flow through graphite piston 220and through inlet valve 251 into the hollow interior of glass cylinder 21 0.
  • clamping plate 241 may be adapted to compress cylinder head 240 against glass cylinder 21 0 through the use of clamping fasteners 242 which may attach to a base (not illustrated) to allow clamping pressure to be exerted.
  • clamping plate 241 may clamp against cylinder head 240 in this embodiment.
  • Other embodiments may also conveniently include an integral extension (not illustrated on Fig. 4) to allow the cylinder head to accept fasteners 242 without the use of clamping plate 241 .
  • FIG. 5 further illustrates the piston assembly of compressor 200.
  • Graphite piston 220 has T-Nut 225 (illustrated on Fig. 4) which includes valve retaining plate 244 fastened thereto to secure inlet valve 251 .
  • Fig. ⁇ illustrates components of an alternate embodiment of a cylinder head suitable for use with compressor 200.
  • Cylinder head 340 comprises two exhaust valve seats 369 for receiving exhaust valves 361 and 363.
  • Exhaust retaining plate 367 secures exhaust valves 361 and 363, which are illustrated as passive reed valves.
  • FIGs. 7 and 8 further illustrate cylinder head 140 as shown in Figs. 1 -3.
  • one larger exhaust port 1 62 is in operable connection with exhaust valve seat 1 64.
  • Inlet 1 50 and second inlet 1 52 allow the passage of material into compressor 1 00.
  • Inlet valve seat 1 54 and second inlet valve seat 1 55 are in operable connection with inlet 1 50 and second inlet 1 52.
  • graphite pistons 1 20 and 220 form a suitable seal with glass cylinders 1 1 0 and 21 0 respectively. This may be accomplished by adapting graphite pistons 1 20 and 220 to have an outside diameter substantially equal to the inside diameter glass cylinder 1 1 0 and 21 0 respectively. The natural low friction properties of the graphite and the glass will then allow graphite pistons 1 20 and 220 to move transversely during operation, even with a seal tight enough to allow a significant degree of compression. Graphite and borosilicate glass are preferred materials both because of their coefficients of friction and because their thermal characteristics are such that an operable seal can be maintained during compressor operation .
  • one or more low friction ring 521 may be used to create the desired seal. While a single split ring can be used, having two or more split rings enable the openings to be offset to promote better sealing between low friction ring 521 and class cylinder 51 0. Utilizing a low friction material such as a synthetic resin (for example, and without limitation, such as Teflon) for split ring or rings forming low friction ring 521 allows reliable and prolonged used without the need for tight tolerances between the outside diameter of the graphite piston and the glass cylinder. Graphite is still preferred for the piston, however, due to its thermal characteristics.
  • a synthetic resin for example, and without limitation, such as Teflon
  • Compressor 500 thus comprises cylinder head 540, glass cylinder 51 0, graphite piston 520 and low friction ring 521 .
  • Connecting rod 530 is operably connected to graphite piston 520 as has been previously described, and extends into housing 580.
  • lower seal 570 forms a seal against housing 580.
  • Compressor 500 also incorporates a means of generating transverse motion of graphite piston 530 comprising motor 585, eccentric 587, and shaft retainer 588.
  • Motor 585 may be any motor, but is preferably an electric motor and more specifically is preferably a brushless DC motor.
  • Motor 585 engages eccentric 587 substantially in the center of eccentric 587.
  • Eccentric 587 comprises offset eccentric shaft 589 which is adapted to engage connecting rod bearing 53 1 , which is retained by shaft retainer 588. As eccentric 587 rotates, offset eccentric shaft 589 imparts a substantially linear motion to graphite piston 520 through connecting rod 530.
  • FIG. 1 0 illustrates an alternative embodiment of compressor 600 according to the present invention, with an alternate motion generating means.
  • smart material actuator 685 is mounted to compressor base 680, preferably with an actuator clamping plate (not illustrated) that clamps compensator 694 against compressor base 680.
  • actuator clamping plate not illustrated
  • piezoelectric or smart material device 690 expands. That expansion results in flexing of webs 691 which transfer motion to actuating arms 692.
  • Actuating arms 692 are operably connected to second stage connecting elements 693, which in turn transfer motion to second stage block 687.
  • Second stage block 687 is operably connected to connecting rod 630, through which graphite piston 620 is moved.
  • resonant operation can be achieved using a control circuit (not illustrated) capable of operating smart material actuator 685 at a resonant frequency and adjusting the electric potential applied to smart material device 690 when resonance is achieved to prevent over-extension of webs 691 .
  • the result is a high frequency operation with reduced power consumption.
  • the configuration of base 680 can affect the resonant characteristics of the system. Accordingly different base and/or mounting means (not illustrated) may be used to achieve the desired resonant properties as is further discussed in the incorporated references and in particular in U.S. Published application number 201 2-0038245.
  • the volume and rate of flow may be adjusted by adjusting the size of the compressor components (whereby larger pistons, chambers and ports allow for increased flow and smaller pistons, chambers and ports allow for decreased flow), changing the stroke length of the pistons (whereby longer stroke lengths create greater flow and lower stroke lengths create lesser flow), and/or by changing the pump speed (whereby faster speeds increase flow while lower speeds decrease flow).
  • the tolerances may vary depending on the material to be compressed, with thicker gasses having larger molecular sizes allowing for looser tolerances than thinner gasses with small molecular sizes.
  • a control mechanism, device or means (not illustrated) is necessary to ensure that the various actuators activate and deactivate at the proper times.
  • Such means will be an electronic control circuit (not shown) of any of the suitable types known to those of ordinary skill in the art.
  • Flow and back pressure sensors may also be incorporated such that the control circuit can increase or decrease speed or volume as required to maintain a predetermined flow speed. While the specific control means will vary according to the type of actuator used, such means are well understood in the art for each type of applicable actuator. Additional information on controllers may be found in the incorporated references.

Abstract

La présente invention concerne un compresseur pour l'essentiel exempt de lubrifiant comprenant un cylindre en verre ayant un intérieur creux, un piston en graphite placé à l'intérieur du cylindre en verre, une tige de connexion fixée en fonctionnement au piston en graphite, une culasse fermant de façon étanche une extrémité du cylindre en verre, une vanne d'échappement connectée en fonctionnement avec l'intérieur creux du cylindre en verre et une soupape d'admission connectée en fonctionnement à l'intérieur creux du cylindre en verre. Le compresseur peut être entraîné par n'importe quel moyen adapté comprenant, sans s'y limiter, un moteur CC sans balai, un actionneur de matériel intelligent.
PCT/US2013/069164 2012-11-08 2013-11-08 Compresseur ayant un piston en graphite placé dans un cylindre en verre WO2014074828A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/440,612 US20150337823A1 (en) 2012-11-08 2013-11-08 Lubricant-Free Compressor Having a Graphite Piston in a Glass Cylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261723815P 2012-11-08 2012-11-08
US61/723,815 2012-11-08

Publications (1)

Publication Number Publication Date
WO2014074828A1 true WO2014074828A1 (fr) 2014-05-15

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