Rotary compressor

A rotary compressor includes a sealed vertical compressor housing, a compressing unit, and a motor. A refrigerant discharging unit is provided at an upper part and a refrigerant intake unit is provided at a lower part side surface in the sealed vertical compressor housing. The compressing unit is disposed on the lower part of the compressor housing, includes an annular cylinder, an end plate including a bearing unit and a discharge valve unit and blocking end portions of the cylinder, an annular piston that engages with an eccentric portion of a rotation axis supported by the bearing unit, revolves along a cylinder inner wall of the cylinder in the cylinder, and forms a cylinder chamber between the cylinder inner wall and the annular piston, and a vane. The motor is disposed on the upper part of the compressor housing, and drives the compressing unit via the rotation axis.

Piston for internal combustion engine

A piston that moves reciprocally in the cylinder of an internal combustion engine and has a piston skirt that makes sliding contact with the inner wall of the cylinder. Solid lubrication parts are provided on the sliding-contact surface of the piston skirt. The solid lubrication parts include at least one type of silver, silver alloy, copper, or copper alloy, and at least one type of carbon material or carbide ceramics.

Refrigerant compressor shaft seal

A shaft sealing mechanism is provided including a first component having a first surface and a second component having a second surface. The first component and the second component are arranged in contact such that the first surface and the second surface form a dynamic interface. The first surface includes a conformable carbon or carbon-graphite material. The second surface includes a rigid, highly polished, silicon carbide material having a plurality of graphite particles embedded therein.

PUMP WITH PLUNGER HAVING TRIBOLOGICAL COATING

A pump is disclosed. The pump may include at least one pumping mechanism. The at least one pumping mechanism may include a barrel formed of a substrate having a bore and a plunger formed of a substrate and slidably disposed within the bore in the barrel. The pump may further include a coating disposed on the plunger. The coating may include a main layer containing a tribological material and a sacrificial break-in layer disposed on the main layer, the break-in layer containing a tribological material. 1. A pump comprising: a barrel formed of a substrate having a bore; and', 'a plunger formed of a substrate and slidably disposed within the bore in the barrel; and, 'at least one pumping mechanism including a main layer containing a tribological material; and', 'a sacrificial break-in layer disposed on the main layer, the break-in layer containing a tribological material., 'a coating disposed on the plunger, the coating including2. The pump of claim 1 , wherein the main layer tribological material contains amorphous diamond-like carbon (ADLC).3. The pump of claim 1 , wherein the break-in layer tribological material contains at least one of a diamond-like carbon (DLC) material claim 1 , titanium molybdenum disulfide (TiMoS) claim 1 , or a ceramic material.4. The pump of claim 1 , wherein the coating further includes a support layer disposed between the main layer and the substrate of the plunger claim 1 , the support layer including a tribological material.5. The pump of claim 4 , wherein the support layer tribological material contains at least one of a DLC material or chromium carbide.6. The pump of claim 1 , wherein the bore is coated with a metal plating.7. The pump of claim 6 , wherein the metal plating includes nickel or chrome.8. The pump of claim 6 , wherein the metal plating is impregnated with a tribological material.9. The pump of claim 8 , wherein the metal plating tribological material includes polytetrafluroethylene (PTFE).10. The pump of claim 1 , wherein ...

CARBON SEAL ASSEMBLY

A seal assembly includes a housing at least partially defining a seal opening and at least partially surrounding a rotatable shaft. A carbon seal is located at least partially in the seal opening and includes a sealing surface. The rotatable shaft includes a radially facing surface that has a carbide based coating and a diamond-like carbon coating in engagement with the sealing surface on the carbon seal. 1. A seal assembly comprising:a housing at least partially defining a seal opening and at least partially surrounding a rotatable shaft; anda carbon seal located at least partially in the seal opening and including a sealing surface;wherein the rotatable shaft includes a radially facing surface having a carbide based coating and a diamond-like carbon coating in engagement with the sealing surface on the carbon seal.2. The assembly of claim 1 , wherein the carbide based coating is in direct contact with a radially outer surface of the rotatable shaft.3. The assembly of claim 2 , wherein the diamond-like carbon coating is in direct contact with the carbide based coating and the carbon seal.4. The assembly of claim 1 , wherein the housing forms a circumferential ring.5. The assembly of claim 4 , wherein the carbide based coating and the diamond-like carbon coating extend circumferentially around the rotatable shaft.6. The assembly of claim 1 , wherein the carbide based coating and the diamond-like carbon coating create a radial separation between the rotatable shaft and the carbon seal.7. The assembly of claim 1 , wherein the carbon seal includes a claim 1 , electrocarbon grade carbon.8. The assembly of claim 1 , wherein the diamond-like carbon coating is silicon doped9. The assembly of claim 1 , wherein the carbide based coating and the diamond-like carbon coating separate the rotatable shaft from contacting the carbon seal.10. The assembly of claim 1 , further comprising a recess in the rotatable shaft for accepting the carbide based coating and the diamond-like ...

CYLINDER DRUM OF A HYDROSTATIC AXIAL PISTON MACHINE HAVING A WEAR-RESISTANT LAYER

A method is provided for forming wear-resistant layer on the surface of cylinder bores a cylinder drum of a hydrostatic axial piston machine within which a respective piston is moved in a manner subject to intensive wear. The cylinder bores are gas nitrocarburized in two stages to minimize the wear and include a thin uniform connecting layer that has a thickness of 4 to 16 μm and a comparatively thick underlying diffusion layer. 1. A method of forming a wear-resistant layer on the surface of a cylinder bore within a cylinder drum of a hydrostatic axial piston machine , the method comprising gas nitrocarburizing the surface of the cylinder bore in two stages:the first stage forming an oxide layer and a diffusion layer at the surface separated by a ductile connecting layer that is comparatively thin relative to the diffusion layer, the first stage comprising gas nitrocarburizing at a comparatively low treatment temperature and a comparatively long treatment duration; andthe second stage comprising further gas nitrocarburizing while increasing the carbon content of the connecting layer by the addition of carbon donors at a comparatively high treatment temperature relative to the first stage.2. The method according to claim 1 , wherein the connecting layer is formed with a thickness of 4 to 16 μm.3. The method according to claim 2 , wherein the connecting layer is formed with a thickness of 5 to 12 μm.4. The method according to claim 1 , wherein the diffusion layer is formed with a thickness of at least 50 μm.5. The method according to claim 1 , wherein the comparatively low temperature of the first stage is 500 to 510° C.6. The method according to claim 5 , wherein the comparatively high treatment temperature of the second stage is greater than 500° C.7. The method according to claim 1 , further comprising adding during the gas nitrocarburizing stages more nitrogen than in an undersaturated furnace atmosphere.8. The method according to claim 7 , wherein the step of ...

Reinforced pistons

Cylinder for a working machine

Cylinder for working machines, with a liner consisting of a ceramic material, such as silicon carbide, with a cylinder casing made of metal and with a bush arranged between the liner and casing and made of a flexible material, especially silicone rubber. The bush makes it possible to displace the liner in the radial direction and limits the stress to which the bush is subjected. <IMAGE>

Fragment prevention and containment for a bearing device for use in a pump

A bearing device for use in a pump which has a bearing member composed of a hard and brittle material made of ceramic such as silicon carbide (SiC). The bearing device has a bearing housing, a ceramic bearing member housed in the bearing housing and supporting a shaft, an elastic material around the ceramic bearing member for preventing the ceramic bearing member from being broken, and a thrust collar for preventing fragments of the ceramic bearing member from being scattered when the ceramic bearing member is broken.

Relative combination of a cylinder and a seal ring for internal combustion engines

Improved wear characteristics of a seal ring for a piston and a mating cylinder are obtained by using selected materials for the seal ring and cylinder. The cylinder is characterized by having a surface coating of Ni or Ni alloy containing 3% to 8% of SiC having a particle size of from 0.5μ to 5μ, or by having a base member of Al or Al alloy containing 13% to 23% of Si having a particle size of 5μ to 8μ. The seal ring is characterized by having a Ni or Ni alloy containing 2% to 10% of SiC having a particle size of 0.5μ to 5μ.

Cylinder head for internal combustion engine i.e. diesel engine, has solid portion provided with intake orifice, and exhaust orifice and water circulation zone i.e. water core, arranged in solid portion

The head (1) has a solid portion (10) provided with an intake orifice. An exhaust orifice and a water circulation zone i.e. water core (5), are arranged in the solid portion. Reinforcement nanostructures are distributed in the solid portion in a uniform manner. The solid portion is made of aluminum based alloy. The reinforcement nanostructures include nanofibers, nanotubes or nanopowder, where the nanopower is selected from carbon black, alumina powder and silicon carbide powder. An independent claim is also included for a method for fabricating a cylinder head of an internal combustion engine.

COMPOSITE STRUCTURE WITH CERAMIC MATERIAL REINFORCED WITH SILICON CARBIDE FIBERS

ENERGY-SAVING HEAT PUMP

L'invention fait reposer l'ensemble tournant sur un palier n'exigeant aucune surveillance et assurant en même temps l'étanchéité sans graissage à l'huile. A cet effet, le moteur d'entraînement 6, entraîné magnétiquement à travers la calotte 8 fait tourner directement le rotor du compresseur 7 tandis que le carter 3 de la pompe, entraîné à une vitesse moindre est solidarisé par les tubes radiaux 18 avec l'échangeur de chaleur 4-17 qui met en contact le liquide de travail avec l'eau et l'eau avec l'air. L'ensemble tournant 3-4 repose sur le coussinet hémisphérique 2, dont le centre se trouve au-dessous du centre de gravité de la charge reposant sur le coussinet. Cette pompe peut alimenter un circuit de chauffage. The invention rests the rotating assembly on a bearing requiring no monitoring and at the same time ensuring tightness without oil lubrication. To this end, the drive motor 6, driven magnetically through the cap 8 directly rotates the rotor of the compressor 7 while the casing 3 of the pump, driven at a lower speed is secured by the radial tubes 18 with the heat exchanger 4-17 which brings the working liquid into contact with water and water with air. The rotating assembly 3-4 rests on the hemispherical bearing 2, the center of which is below the center of gravity of the load resting on the bearing. This pump can supply a heating circuit.

APPARATUS FOR TRANSPORTING A MEDIUM

MAGNETICALLY DRIVEN CENTRIFUGAL PUMP

Patent FR2404185B1

COMPOSITE STRUCTURE HAVING CERAMIC MATERIAL REINFORCED WITH SILICON CARBIDE FIBERS

LA PRESENTE INVENTION CONCERNE UNE STRUCTURE COMPOSITE A MATIERE CERAMIQUE RENFORCEE DE FIBRES DE CARBURE DE SILICIUM. CETTE STRUCTURE COMPOSITE A UNE RESISTANCE MECANIQUE, UNE TENACITE ET UNE RESISTANCE A L'OXYDATION ELEVEES AUX HAUTES TEMPERATURES. CETTE STRUCTURE COMPOSITE EST REALISEE EN UNE PLURALITE DE COUCHES DE MATIERES CERAMIQUES, CHAQUE COUCHE ETANT RENFORCEE PAR UNE PLURALITE DE FIBRES DE CARBURE DE SILICIUM DE LONGUEUR CONTINUE ORIENTEES DANS UNE SEULE DIRECTION, CHAQUE COUCHE AYANT UNE RESISTANCE A LA FLEXION AXIALE SUPERIEURE A 482,6MPA ET UNE TENACITE ELEVEE MISE EN EVIDENCE PAR UN FACTEUR DE CONCENTRATION DE CONTRAINTES CRITIQUE SUPERIEUR A 11X 10 N.M. LA STRUCTURE COMPOSITE EST REALISEE EN PARTANT A PARTIR D'UNE MATIERE DE MATRICE CERAMIQUE DANS UN ETAT VITREUX ET EN TRANSFORMANT ENSUITE CET ETAT VITREUX EN UN ETAT CRISTALLIN APRES DENSIFICATION DE LA STRUCTURE COMPOSITE. L'INVENTION EST PARTICULIEREMENT UTILISABLE DANS DES MILIEUX A HAUTES TEMPERATURES ET DES ENVIRONNEMENTS OXYDANTS. THE PRESENT INVENTION CONCERNS A COMPOSITE STRUCTURE A CERAMIC MATERIAL REINFORCED WITH SILICON CARBIDE FIBERS. THIS COMPOSITE STRUCTURE HAS A HIGH MECHANICAL RESISTANCE, TENACITY AND OXIDIZATION RESISTANCE AT HIGH TEMPERATURES. THIS COMPOSITE STRUCTURE IS MADE IN A PLURALITY OF LAYERS OF CERAMIC MATERIALS, EACH LAYER BEING REINFORCED BY A PLURALITY OF SILICON CARBIDE FIBERS OF CONTINUOUS LENGTH ORIENTED IN A SINGLE DIRECTION, EACH LAYER HAVING A RESISTANCE TO BENDING GREATER AT 482.6 AXI2.6 AND A HIGH TENACITY PROVIDED BY A CRITICAL STRESS CONCENTRATION FACTOR GREATER THAN 11X 10 NM THE COMPOSITE STRUCTURE IS REALIZED BY STARTING FROM A CERAMIC MATRIX MATERIAL IN A GLASS STATE AND THEN TRANSFORMING THIS GLASS STATE INTO A STATE CRYSTALLINE AFTER DENSIFICATION OF THE COMPOSITE STRUCTURE. THE INVENTION CAN BE PARTICULARLY USED IN HIGH TEMPERATURE MEDIA AND OXIDIZING ENVIRONMENTS.

High pressure fuel injection pump for diesel and other internal combustion engines is activated by cam control consisting of cam, roll in sliding contact with cam, and support in sliding contact with roll

The fuel pump has a piston activated by cam control consisting of a cam, a roll in sliding contact with the cam, and a support in sliding contact with the roll and in pressure contact with the piston. The roll or the support comprises a ceramic material, and the thermal expansion coefficient of the roll and the support are essentially equal to each other. The roll can consists of a metallic material based on iron and the support consists of a ceramic material based on zirconia. The roll or the support can consist of a composite material of stabilized zirconia, stabilized ceria and an aluminum lanthanum beta -oxide. An Independent claim is given for an hydraulic pump activated by cam control, where the roll or the support consists of a ceramic material based on silicon carbide or silicon nitride, and where, in particular, the roll consists of a material based on silicon nitride having a relative density of at least 99%, bending resistance of at least 1000 MPa, and mean grain size of 0.8 microns or less.

Sliding parts

Thermoelastic device comprising an expansive element formed from a preselected material

A thermoelastic device comprising an expansive element is disclosed. The expansive element is formed from a material, which is preselected by calculating a dimensionless constant for the material. The dimensionless constant is indicative of the potential effectiveness of the material in a particular application, such as a micro-electromechanical system.

Magnetic pump

A magnetic pump is provided which is especially useful for pumping corrosive agents, having simplified components made of a hard ceramic, preferably silicon carbide, which form ceramic-on-ceramic axial and radial bearing surfaces. The pump has an impeller and magnetic rotor, each being mounted on an opposite end of a ceramic shaft by a respective ceramic bush. The shaft rides in ceramic first and second plain bearing bushes, each of which forms a radial bearing surface and an axial bearing journal end face. The ceramic impeller bush is secured to the shaft by a form fit and provides an axial bearing surface against the first bearing bush end face. Similarly, the ceramic rotor bush is secured to the shaft by a form fit and forms an axial bearing surface against the end face of the second plain bush.

Shaft for a magnetic-drive centrifugal pump using a plurality of grooves

The grooved shaft preferably has one or more axial grooves with semi-elliptical or U-shaped groove cross sections. Flat areas adjoin the axial groove or grooves. The flat areas are tapered tangentially relative to a substantially cylindrical shaft area. The grooved shaft optimally has a front shaft radius and a rear shaft radius. The front shaft radius is smaller than the rear shaft radius such that the front shaft radius may be oriented near an impeller intake to decrease hydraulic flow resistance. In practice, the grooved shaft is incorporated into a magnetic-drive centrifugal pump and the grooves are statically oriented in a position of minimal radial loading.

Thermoelastic actuator design

Reciprocating piston for a reciprocating piston engine and reciprocating piston engine, and cylinder of a reciprocating piston engine

The disclosure relates to a reciprocating piston composed of ceramic material for a reciprocating-piston engine with crank drive, wherein the reciprocating piston is rigidly screwed to a piston rod by means of a screw, wherein between the reciprocating piston and the piston rod there is braced at least one disc composed of metallic material, wherein the screw is composed of a metallic material, wherein the coefficient of thermal expansion .alpha.Piston of the material of the reciprocating piston is lower than the coefficient of thermal expansion .alpha.Screw of the material of the screw, and the disc is an expansion compensation disc, wherein the coefficient of thermal expansion .alpha.Disc 1;2 of the material of the expansion compensation disc is greater than the coefficient of thermal expansion .alpha.Screw of the material of the screw, and to a reciprocating-piston engine having a reciprocating piston of said type, and to a cylinder of a reciprocating-piston engine having a cylinder of said type.

Two-stroke engine

The two-stroke engine comprises a cylinder block with at least one cylinder, in which the piston, fitted with at least one piston ring, is arranged, capable of moving up and down and connected to the crankshaft drive. In order to take present attitudes towards fuel saving and environmental pollution into account in the engine itself, without having to abandon the existing design principle, the engine is designed in such a way that the piston (1) is formed from pressed graphite in the form of heat-hardened carbon or electrographite with a bending strength in the order of at least 75 N/mm<2> and its head (2) heat-treated to prevent burn-off, at least on the combustion chamber side. At the same time at least the sliding surface (3) of the cylinder (4) is formed from the same materal, but with running surface heat-treated, or a similar material such as siliconised carbon, silicon carbide, silicon nitrite or the like with approximately the same thermal expansion behaviour as that of the piston (1). The same goes for the piston ring (5) which, moreover, with regard to its elasticity is endowed with the necessary elasticity either by design or by the choice of sufficiently elastic material. Finally the bores (12) on the piston (1) for the piston pin (13) are designed with a play in relation to the outside diameter of the piston pin (13) in such way that there is minimal play at operating temperature. <IMAGE>

Compressor with gas-lubricated bearing

FIELD: engines and pumps. SUBSTANCE: in compressor with cylinder (21) and piston (25) performed with the possibility of oscillating movement in the cylinder (21) and having a gap across movement direction, the end face (31) of piston (25) limits compression (26) chamber in the cylinder (21), the piston (25) has diameter that reduces towards the end face (31). EFFECT: invention ensures piston leaning with good radial stability at low consumption of compressed gas. 9 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 432 497 (13) C2 (51) МПК F04B 39/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009119391/06, 31.10.2007 (24) Дата начала отсчета срока действия патента: 31.10.2007 (73) Патентообладатель(и): БСХ БОШ УНД СИМЕНС ХАУСГЕРЕТЕ ГМБХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 07.11.2006 DE 102006052430.6 (72) Автор(ы): ШУБЕРТ Ян-Григор (DE) (43) Дата публикации заявки: 20.12.2010 Бюл. № 35 (56) Список документов, цитированных в отчете о поиске: US 3035879 A, 22.05.1962. DE 102004061940 А1, 06.07.2006. US 6565716 A, 10.06.2003. DE 4035524 A1, 14.05.1992. 2 4 3 2 4 9 7 R U (86) Заявка PCT: EP 2007/061726 (31.10.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 08.06.2009 (87) Публикация заявки РСТ: WO 2008/055826 (15.05.2008) Адрес для переписки: 191186, Санкт-Петербург, а/я 230, "АРСПАТЕНТ", пат.пов. В.М.Рыбакову, рег. № 90 (54) КОМПРЕССОР, СОДЕРЖАЩИЙ ГАЗОВЫЙ ПОДШИПНИК (57) Реферат: Изобретение относится к области компрессоростроения. В компрессоре с цилиндром (21) и поршнем (25), выполненным с возможностью осциллирующего движения в цилиндре (21) и имеющим зазор поперек направления движения, торец (31) поршня (25) ограничивает в цилиндре (21) камеру (26) сжатия, поршень (25) имеет диаметр, уменьшающийся в направлении торца (31). Способствует опиранию поршня с хорошей радиальной устойчивостью при небольшом расходе сжатого газа. 8 з.п ...

Piston for diesel engine

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

NOVEL HYDRAULIC MACHINE COMPONENT, METHOD FOR MANUFACTURING OR MAINTENANCE OF SUCH COMPONENT

Environmental barrier coating comprising a gas velocity reducing top layer

A composite comprising a silicon based substrate, an environmental barrier coating (EBC) with a top layer, wherein the top layer comprises a velocity barrier layer. Velocity barrier layer is. any layer positioned between a flowing gas stream and the underlying EBC protective layer which acts to reduce the velocity of the gas stream which otherwise would impinge on the underlying protective layer. The velocity barrier layer preferably reduces the velocity of an impinging gas stream by at least 50% across the thickness of the velocity barrier layer. It also preferably reduces the velocity of the impinging gas stream to less than 1 meter per second across the thickness of the velocity barrier layer.

Sliding member for compressor

Selecting a material for use as the expansive element

The invention relates to an ink jet print head comprising a plurality of nozzles adapted to eject drops of ink through an opening towards a surface to be printed. Each nozzle has a nozzle chamber adapted for receiving ink via a conduit. The nozzle chamber is defined by a floor portion, an upwardly extending peripheral floor sidewall and a roof portion having a depending peripheral roof sidewall. The floor and roof are arranged to at least partially overlap in a telescopic manner. Each nozzle also comprises an actuator arranged to move the roof portion upwardly and downwardly relative to said floor portion so as to eject ink drops toward a surface to be printed. The distance between the telescopically overlapped sidewalls is such that when the chamber is in use and ink is located within the chamber, surface tension provides for sealing of the space between the sidewalls so as to at least reduce leakage of ink through the space.

Scroll compressor

[Problem] To provide a scroll compressor which can contribute to reduction in the entire size and the entire weight and has excellent durability and reliability, and which can use a new refrigerant to make ultrahigh speed operation possible. [Means for Resolution] In the scroll compressor, the substrate of an Oldham-coupling ring 107 is made of an aluminum alloy, and a hard DLC layer is formed on the surface of the substrate with interposition of underlayers provided for obtaining excellent adhesion and compensating for hardness so that the weight of the Oldham-coupling ring is reduced by approximately 1/3, compared with the conventional case where the Oldham-coupling ring is made of an iron-based material. Adhesive wear between sliding members are prevented so that improvement in abrasion resistance and reduction in friction coefficient are achieved. As a result, the inertial mass of a rotation system is reduced. Furthermore, an orbiting scroll 101 also has the same material structure so that the eccentric mass of the rotation system is reduced. Thus, the torque load of a motor 100 can be reduced as sufficiently as possible to thereby contribute to reduction in the entire size and the entire weight to obtain excellent durability and reliability. In addition, the scroll compressor can use a new refrigerant to make ultrahigh speed operation possible so that compressing performance equivalent to the case where chlorofluorocarbon is used can be obtained.

Rotary compressor with reduced lubrication sensitivity

Grooved shaft for a magnetic-drive centrifugal pump

The grooved shaft for a magnetic-drive centrifugal pump preferably has an axial groove with a semi-elliptical or U-shaped groove cross section. Adjoining the axial groove is a flat area which is tapered tangentially relative to a substantially cylindrical shaft area. The grooved shaft optimally has a front shaft radius and a rear shaft radius, wherein the front shaft radius is smaller than the rear shaft radius such that the front shaft radius may be oriented near an impeller intake to decrease hydraulic flow resistance. Meanwhile, the rear shaft radius provides increased axial and radial load capacity for the grooved shaft. In practice, the grooved shaft is incorporated into a magnetic-drive centrifugal pump and the groove is statically oriented in a position of minimal radial loading. In the centrifugal pump, the grooved shaft forms an immobile channel for the internal circulation of pumped fluid about the product-lubricated wearing surfaces so the grooved shaft and an associated bearing are amply lubricated or cooled.

Scroll compressor

Provided is a scroll compressor which can contribute to reduction of the entire size and the entire weight thereof, and has excellent durability and reliability. The scroll compressor can be operated at an ultrahigh speed by applying a new refrigerant to the scroll compressor. In the scroll compressor, the substrate of an Oldham's ring (107) is composed of an aluminum alloy, and a hard DLC layer is formed on the surface of the substrate via foundation layers which have an excellent adhesiveness and compensate for the hardness and, accordingly, the weight of the Oldham's ring is reduced by approximately 1/3, and the adhesion and abrasion between sliding members are prevented to improve the abrasion resistance and reduce the friction coefficient and, additionally, the inertia mass of a rotation system is reduced. Furthermore, a rotary scroll (101) has a material structure similar to the structure of the Oldham's ring and, accordingly, the eccentric mass of a rotation system is reduced. Thus, the torque load of a motor (100) can be extremely reduced, the entire size and weight can be reduced, and the durability and reliability are excellent. The scroll compressor can be operated at a ultrahigh speed by applying a new refrigerant to the scroll compressor, and the compression performance similar to that obtained when chlorofluorocarbon is used can be obtained.

Device for conveying a medium

Sliding member

To provide a sliding member that exhibits excellent durability and is free of lead. A swash plate for a compressor as the sliding member of the invention contains a base material having on the surface thereof a sliding layer constituting at least a sliding surface, on which shoes slide. The sliding layer contains a first layer that contains an amorphous hard carbon (diamond-like carbon) film containing Si (DLC-Si film) and is formed on the base material, and a second layer that is formed on the first layer and contains polyamideimide (PAI) containing a solid lubricant such as MoS 2 .

Exhaust valve

Continuous length silicon carbide fiber reinforced ceramic composites

A silicon carbide fiber reinforced ceramic matrix composite is disclosed having high strength, fracture toughness, and oxidative stability even at high temperature use. The composite is made up of a plurality of ceramic layers, each layer reinforced with a plurality of unidirectional continuous length silicon carbide fibers, each layer having an axial flexural strength greater than 70,000 psi and a high fracture toughness, exemplified by a critical stress intensity factor greater than 10×10 3 psi (inch) 1/2 . The composite is formed by starting with the ceramic matrix material in the glassy state and converting it from the glassy state to the ceramic state after densification of the composite.

Four-stroke engine

The four-stroke engine comprises a cylinder block with at least one cylinder, provided with valves, in which cylinder the piston, fitted with at least one piston ring, is arranged, capable of moving up and down and connected to the crankshaft drive. In order to take present attitudes towards fuel saving and environmental pollution into account in the engine itself, without having to abandon the existing design principle, the engine is designed in such a way that the piston (1) is formed from pressed graphite in the form of heat-hardened carbon or electrographite with a bending strength in the order of at least 75 N/mm<2> and its head (2) heat-treated to prevent burn-off, at least on the exposed working surface (2'). At the same time at least the sliding surface (3) of the cylinder (4) is formed from the same material, but with running surfaces heat-treated, or a similar material such as siliconised carbon, silicon carbide, silicon nitrite or the like with approximately the same thermal expansion behaviour as that of the piston (1). The same goes for the piston ring (5) which, moreover, with regard to its elasticity is endowed with the necessary elasticity either by design or by the choice of sufficiently elastic material. Finally the bores (12) on the piston (1) for the piston pin (13) are designed with a play in relation to the outside diameter of the piston pin (13) in such way that there is minimal play at operating temperature. <IMAGE>

Wear-resistant fluid end

本发明公开了耐磨流体端。在一个方面中，本文描述了流体端，其具有解决采用包含研磨颗粒的流体的泵送操作中的劣化机制的结构和设计。简而言之，用于往复式泵的流体端包括主体部分和往复式柱塞，所述主体部分包括具有一定内径表面的孔，所述往复式柱塞至少部分地设置在所述孔中。套筒定位在孔内的内径表面与柱塞之间，所述套筒经由过盈配合接合所述内径表面。

APPARATUS FOR TRANSPORTING A MEDIUM

L'appareil est destiné à transporter un milieu gazeux ou liquide ou un milieu capable de s'écouler en matière solide à petites particules, qui contient le cas échéant des produits additifs et/ou des impuretés présentes dans un état de cohésion différent de celui du milieu respectif. L'appareil comprend un corps de support (2) en matériau composite contenant des fibres ainsi que des pales (4) reliées au corps de support (2), en particulier un rotor (1) pour une pompe, pour une turbine, ou similaire. Le corps de support (2) est constitué d'une ossature en fibres, formée par des fibres sensiblement continues en carbone ou en matériau céramique, et d'une matrice qui contient du carbone, de sorte que les fibres de l'ossature en fibres sont pourvues d'un enrobage en carbure de silicium qui se forme par infiltration de silicium liquide et par réaction du silicium avec le carbone de la matrice. The apparatus is intended to transport a gaseous or liquid medium or a medium capable of flowing in solid matter with small particles, which if necessary contains additive products and / or impurities present in a state of cohesion different from that of respective medium. The apparatus comprises a support body (2) of composite material containing fibers as well as blades (4) connected to the support body (2), in particular a rotor (1) for a pump, for a turbine, or the like. . The support body (2) consists of a fiber frame, formed by substantially continuous fibers of carbon or ceramic material, and a matrix which contains carbon, so that the fibers of the fiber frame are provided with a coating of silicon carbide which is formed by infiltration of liquid silicon and by reaction of the silicon with the carbon of the matrix.

Refrigerant compressor shaft seal

A shaft sealing mechanism is provided including a first component having a first surface and a second component having a second surface. The first component and the second component are arranged in contact such that the first surface and the second surface form a dynamic interface. The first surface includes a conformable carbon or carbon-graphite material. The second surface includes a rigid, highly polished, silicon carbide material having a plurality of graphite particles embedded therein.

Silicon carbide fiber reinforced ceramic composites

Silicon Carbide Fiber Reinforced Ceramic Composites Abstract A silicon carbide fiber reinforced ceramic matrix com-posite is disclosed having high strength, fracture toughness, and oxidative stability even at high temperature use. The composite is made up of a plurality of ceramic layers, each layer reinforced with a plurality of unidirectional con-tinuous length silicon carbide fibers, each layer having an axial flexural strength greater than 70,000 psi and a high fracture toughness, exemplified by a critical stress inten-sity factor greater than 10 x 103 psi (inch)1/2. The com-posite is formed by starting with the ceramic matrix mate-rial in the glassy state and converting it from the glassy state to the ceramic state after densification of the com-posite.

Scroll compressor

Scroll compressor

本发明提供一种能够有助于整体的小型化·轻量化而耐久性及可靠性优异，且能够进行适用新制冷剂的超高速运转的涡旋压缩机。在该涡旋压缩机中，使欧氏环(107)的基材为铝合金且在其表面上夹设密接性良好而用于弥补硬度的基底层来形成硬质的DLC层，因此与以往的铁系材料的情况相比，能够实现约1/3的轻量化，并防止滑动构件间的胶粘磨损而实现耐磨损性的提高和低摩擦系数化，从而能够减小旋转系统的惯性质量。而且，对于回旋涡盘(101)，通过形成为同样的材质结构，而能够减少旋转系统的偏心质量。由此，能够极力减小电动机(100)的转矩负载，能够有助于整体的小型化·轻量化，能够使耐久性及可靠性优异且形成适用新制冷剂的超高速运转，能够得到与使用弗利昂时同等的压缩性能。

Delivery unit

The invention relates to delivery units consisting of a pump chamber made of aluminum material and a rotor arranged in the pump chamber are known, wherein the pump chamber is provided with an anodic oxidation coating in order to achieve wear and corrosion protection, particularly against fuels. According to the invention, in the delivery unit, the wear and corrosion protection in the pump chamber is improved. According to the invention, the coating (30) comprises nickel.

Exhaust passage of combustion device

Hydrodynamic sliding bearing for the rotor of a pump

Ein hydrodynamisches Gleitlager für einen Läufer einer Pumpe, insbesondere eine Magnetkupplungspumpe, das als kombiniertes Axial- und Radiallager ausgebildet ist, ist so gestaltet, daß jederzeit ausreichend Schmierung durch das zu fördernde Medium in das Gleitlager gelangt. Hierfür besteht das Gleitlager (1) im wesentlichen aus mindestens zwei Lagerhülsen (2, 3), aus mindestens ebenso vielen auf den Lagerhülsen (2, 3) gleitbaren und dadurch Gleitflächen (6, 7) bildenden Lagerbüchsen (4, 5), aus mindestens einer zwischen den jeweiligen Lagerhülsen (2, 3) angeordneten Distanzhülse (8) und aus mindestens einer zwischen den jeweiligen Lagerbüchsen (4, 5) angeordneten Distanzbüchse (9). A hydrodynamic plain bearing for a rotor of a pump, in particular a magnetic coupling pump, which is designed as a combined axial and radial bearing, is designed in such a way that sufficient lubrication reaches the plain bearing at all times through the medium to be conveyed. For this purpose, the slide bearing (1) consists essentially of at least two bearing sleeves (2, 3), of at least as many bearing bushes (4, 5) that can slide on the bearing sleeves (2, 3) and thereby form sliding surfaces (6, 7) a spacer sleeve (8) arranged between the respective bearing sleeves (2, 3) and at least one spacer sleeve (9) arranged between the respective bearing sleeves (4, 5).

Fluid supply device with ceramic internal gear pump and its manufacturing method

본 발명은 베어링 레이스가 있는 펌프장치로서 내부기어펌프를 갖는 유체를 이송시키기 위한 공급장치에 관한 것으로, 상기 베어링 레이스에서 회전되는 내부기어가 베어링 저어널상에 배열되고, 내부기어가 내부기어와 베어링 레이스 사이에 배열된 외부기어가 맞물리는 방법에 의해 베어링 레이스와 회전되고, 내부기어는 외부기어보다 하나 더 적은 치차를 가져서 펌핑작용이 생성되게 하고, 저소음 수준, 부식에 대한 저항성, 중량감소를 얻기 위해 내부기어펌프, 예컨대 베어링 레이스, 내부기어 또는 외부기어의 적어도 몇몇의 부품들이 세라믹재로 이루어진다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump device having a bearing race, and a supply device for transferring a fluid having an internal gear pump, wherein the inner gear rotated in the bearing race is arranged on a bearing journal, and the inner gear is connected to the inner gear and the bearing race. The outer gear arranged in between is rotated with the bearing race by the interlocking method, and the inner gear has one less gear than the outer gear to produce the pumping action, and to obtain low noise level, corrosion resistance and weight reduction. At least some parts of the inner gear pump, such as a bearing race, inner gear or outer gear, are made of ceramic material.

Internal-combustion piston engine

The running surfaces in the cylinder space of an internal-combustion engine, in which ash-producing fuels consisting of solid/liquid mixtures are burned, are provided with wearing layers which consist of a hard phase and of a second phase of lower hardness and higher toughness. The minimum requirements to be met by the two wearing layers are: - a minimum hardness of the hard phase of 1900 HV; - a minimum thickness of 1 mm; - mean chord lengths of the hard phases of 30 - 200 mu m in the running direction; - a metallurgical bond between the phases in the wearing layer and towards the base material and - at least approximately equal hardnesses of the hard phases of the two partners. Wearing layers which meet the above requirements are intended to grind down even hard ash particles, which consist above all of quartz crystals, to such an extent that they are transported away by the lubricating oil through the lubricating gap between the cylinder wall and the piston ring.

Thermoelastic device with preselected resistivity, inertness and deposition characteristics

A thermoelastic device comprising an expansive element is disclosed. The expansive element is formed from a material, which is preselected on the basis that it has one or more of the following properties: a resistivity between 0.1 μΩm and 10.0 μΩm; chemically inert in air; chemically inert in the chosen ink; and depositable by CVD, sputtering or other thin film deposition technique.

Hydrostatic piston machine

Offenbart ist eine hydrostatische Kolbenmaschine mit zumindest einer Gleitpaarung, die aus Gleitflächen zweier relativ zueinander beweglicher Bauteile besteht, deren Werkstoff Eisen enthält. Zumindest eine der Gleitflächen weist eine Verbindungsschicht und eine Oxidschicht auf, wobei die Verbindungsschicht vorzugsweise Teil einer durch Nitrocarburieren, insbesondere durch Gasnitrocarburieren erzeugten Randschicht ist. Disclosed is a hydrostatic piston machine with at least one sliding pairing, which consists of sliding surfaces of two relatively movable components, the material of which contains iron. At least one of the sliding surfaces has a connecting layer and an oxide layer, the connecting layer preferably being part of an edge layer produced by nitrocarburizing, in particular by gas nitrocarburizing.

Patent DE3447784C2

MAGNETICALLY DRIVEN CENTRIFUGAL PUMP

A magnetic drive centrifugal pump with a pump chamber (7) containing a turbine (63) rotated by means of a magnetic coupling with a drive shaft (39) located outside the chamber (7). A magnetic flux-permeable confinement casing (25) inserted between the turbine (63) and the drive shaft (39) has a convex portion facing the chamber (7), where it is surrounded by a skirt (64) of the turbine (63), and a concave portion facing away from the chamber (7) for housing the drive shaft (39). The magnetic coupling means (47, 72) are supported by the skirt (64) and the drive shaft (39) respectively. Said confinement casing (25) operates in favourable conditions such that it may be made of a ceramic material and act to guide the turbine (63) during rotation and stop said turbine (63) during translation.

methods for manufacturing stressed material and shape memory material mems devices

Disclosed is a MEMS device which comprises at least one shape memory material such as a shape memory alloy (SMA) layer and at least one stressed material layer. Examples of such MEMS devices include an actuator, a micropump, a microvalve, or a non-destructive fuse-type connection probe. The device exhibits a variety of improved properties, for example, large deformation ability and high energy density. Also provided is a method of easily fabricating the MEMS device in the form of a cantilever-type or diaphragm-type structure.

Motor driven sealless blood pump

A centrifugal blood pump, used for heart-lung machines or the like, comprises an impeller, a casing having a suction inlet and a delivery outlet and being equipped with a space for rotatably accommodating the impeller, and a magnetic drive means disposed outside the casing. The impeller is of a rotationally symmetric shape and has a rotary vane section and a cylindrical section equipped with a magnet means. The magnet drive means for generating a rotating magnetic field coaxially encloses the magnet means of the above-mentioned cylindrical section and rotates the impeller in cooperation with the magnet means. At least the end section of the impeller's rotation center on the rotary vane section side is supported preferably by a pivot bearing. The pivot and the bearing thereof are preferably made of ceramics.

Selecting a material for use as the expansive element

The invention concerns thermoelastic designs incorporating and expansive element formed from material selected in accordance a procedure involving the derivation of an indicator of the material's potential effectiveness for each application. (FIG. 1 to accompany the abstract).

Reinforced pistons

ABSTRACT OF THE DISCLOSURE A piston is manufactured by incorporating a reinforcement which is formed at least in part by a fibre material and which is so non-uniform as to provide differing characteristics in the cast piston in predetermined differing regions of the piston. For example, the volumetric density of the fibres may be different in one region of the reinforcement as compared with another region in order to produce a more resistant region in the cast piston. Additionally or alternatively, the reinforcement may hold finely divided materials which combine with the piston material during casting to give improved properties. Examples of this are the incorporation of particles of silicon, silicon carbide or silicon nitride to improve wear and/or the incorporation of molybdenum disulphide and tungsten disulphide or graphite to improve lubrication.

Compressor comprising a compressed gas-assisted piston

The invention relates to a compressor comprising a cylinder (22, 23) and a piston (25) that can be displaced in an oscillating manner in said cylinder (22, 23) and that has transverse play in relation to the displacement direction. In said compressor, an end surface (31) of the piston (25) delimits a compression chamber (26) in the cylinder (22, 23). The diameter of the piston (25) reduces towards the end surface (31).

Vane pumping machine utilizing invar-class alloys for maximizing operating performance and reducing pollution emissions

A rotary vane pumping machine have a core structure and peripheral components interfacing with the core structure. The core structure includes a stator assembly defining a contoured surface of a stator cavity, a rotor spinning around a rotor shaft axis that is fixed relative to the stator cavity, and end plates disposed on either side of the rotor. The rotor has a plurality of radial vanes slots for housing a corresponding plurality of vanes that slide within the radial vane slot of the rotor. The plurality of vanes, stator cavity and rotor define a plurality of chamber cells. The core structure is substantially made of low coefficient of thermal expansion Invar materials to achieve precise non-contact sealing clearances between components of the machine.

Patent DE4026571C2

Rotary compressor with reduced lubrication sensitivity

致冷压缩机中与使用合成润滑油、如POE油有关的润滑失效可通过在由于润滑失效受到磨损的零件上施加金刚石式碳涂层而缓解。具体地说,在旋转压缩机的叶片末端涂覆由碳化钨层和0.5至5.0微米厚度的光滑材料层所交替构成的金刚石式碳涂层。

Hydrodynamic sliding bearing for the rotor of a pump

Compressor with aluminum housing and at least one aluminum rotor

The compressor has two rotors ( 14, 16 ), which are rotatably mounted in a housing ( 10 ) by means of a shaft each, the rotors ( 14, 16 ) rotating without contact with the housing. The rotors ( 14, 16 ) consist of a powder-metallurgical Al—Si alloy, and the housing ( 10 ) consists essentially of aluminum.

New hydraulic-machine component, and method of manufacturing or of maintaining such a component

Piston engine.

Le moteur à piston comporte un bloc-cylindre avec au moins un cylindre dans lequel le piston, muni d'au moins un segment de piston est relié au vilebrequin, est agencé de manière à être animé d'un mouvement ascendant et descendant. Afin de tenir compte, au niveu du moteur, des tendances actuelles en matière d'économie de carburant et de pollution de l'environnement sans pour autant devoir renoncer aux principes de conception actuels, le moteur est conçu de telle manière que le piston (1) est constitué d'un carbone modifié présentant une résistance à la flexion de l'ordre d'au moins 75 N/mm2, et sa face supérieure (2), au moins sur la surface d'admission (2'), est traitée de manière à résister à l'usure par combustion. Au moins la portée (3) du cylindre (4) est réalisée dans le même matériau mais ayant subi en surface un traitement de trempe et revenu ou bien dans un matériau similaire tel que du carbone silicé, du carbure de silicium, du nitrate de silicium ou similaires, lui conférant ainsi approximativent la même tenue à la dilatation thermique que celle du piston (1). Il en va de même du segment de piston (5), lequel, en outre, en ce qui concerne son élasticité, est pourvu de l'élasticité nécessaire soit de par sa construction soit de par le choix d'un matériau suffisamment élastique. Enfin, les perçages (1) ménagés sur le piston (1) et destinés à en recevoir l'axe (13) sont dimensionnés par rapport au diamètre extérieur dudit axe (13) avec un jeu qui assure, à la température de fonctionnement, un jeu minimal. The piston engine comprises a cylinder block with at least one cylinder in which the piston, provided with at least one piston ring is connected to the crankshaft, is arranged so as to be driven in an upward and downward movement. In order to take account of current trends in fuel economy and environmental pollution at the engine level without having to abandon current design principles, the engine is ...

Compressor

The compressor has two rotors (14, 16) which are each rotationally mounted by means of a shaft, in a housing (10). Said rotors (14, 16) rotate without touching the housing and consist of a powder-metallurgical Al-Si alloy, while the housing (10) consists essentially of aluminium.

Unitized valve seat assembly

A valve seat assembly including a housing having a cavity and a puck located in the cavity and connected to the housing. The puck having a greater hardness than the housing.

Pump with wear-resistant barrel and plunger having coating support

A pumping mechanism is disclosed. The pumping mechanism may include a barrel formed of a barrel substrate and including a first end surface, a second end surface opposite the first end surface, and a bore between the first and second end surfaces. Each of the first and second end surfaces and the bore is coated with a metal plating. The pumping mechanism may further include a plunger formed of a plunger substrate and configured to be slidably disposed in the bore in barrel, the plunger substrate having a tribological coating.

Rotary compressor with reduced lubrication sensitivity

Lubrication deficiencies related to the use of synthetic lubricants such as POE oils in refrigeration compressors can be mitigated by providing a diamond-like-carbon coating on a member subject to wear due to lubrication deficiencies. Specifically, the tip of the vane of a rotary compressor is coated with a diamond-like-carbon coating made up of alternating layers of tungsten carbide and a lubricious material 0.5 to 5.0 microns thick.

Reinforced pistons

내용 없음. No content.

Sliding member

To provide a sliding member that exhibits excellent durability and is free of lead. A swash plate 8 for a compressor as the sliding member of the invention contains a base material 81 having on the surface thereof a sliding layer 82 constituting at least a sliding surface 8a, on which shoes 21 slide. The sliding layer 82 contains a first layer 82a that contains an amorphous hard carbon (diamond-like carbon) film containing Si (DLC-Si film) and is formed on the base material 81, and a second layer 82b that is formed on the first layer 82a and contains polyamideimide (PAI) containing a solid lubricant such as MoS 2 .

Compressor

压缩机，具有两个分别借助于一轴可旋转地支承在一壳体(10)内的转子(14、16)，它们与壳体不接触地旋转。转子(14、16)由粉末冶金的铝硅合金组成，壳体(10)基本上由铝组成。

Self-aligning gear pump

Disclosed herein is a gear pump (100) for pumping a fluid (404). The gear pump comprises: a sealed internal chamber (102); a pumping chamber (104) within the sealed internal chamber; a first pump port (122) fluidically connected to the pumping chamber; a second pump port (114) fluidically connected to the pumping chamber; a drive gear (120) within the pumping chamber; an idler gear (122) within the pumping chamber, wherein the drive gear and the idler gear are configured for pumping the fluid between the first pump port and the second pump port; a drive shaft (124) coupled to the drive gear, wherein the drive shaft is configured for rotationally driving the drive gear, wherein the drive shaft is within the sealed internal chamber; an idler shaft (126) coupled to the idler gear, wherein the idler shaft is within the sealed internal chamber, wherein the idler gear is coupled to the idler shaft; a pump housing (106, 108, 110) formed from a first housing element (106), a central housing element (108), and a second housing element (110), wherein the central housing element is positioned between the first housing element and the second housing element, wherein the first housing element, the second housing element and the central housing element form at least a portion of the sealed internal chamber, wherein the pumping chamber is formed entirely within the central housing; a first drive shaft bearing (128), wherein the first drive shaft bearing is mounted partially within the first housing element; a second drive shaft bearing (130), wherein the second drive shaft bearing is mounted partially within the second housing element, wherein the first drive shaft bearing and the second drive shaft bearing both partially extends into and align the drive gear with the pumping chamber; a first idler shaft bearing (132), wherein the first idler shaft bearing is mounted partially within the first housing; a second idler shaft bearing (134), wherein the second idler shaft bearing is ...

Fluid compressor

본 발명은 유체압축기에 관한 것으로서, 나선형 블레이드식 압축기구부를 포함하는 유체압축기에 있어서, 실린더; 상기 실린더 내측에 배치된 롤러; 및 상기 롤러와 상기 실린더사이에 끼워진 나선형 블레이드를 포함하며, 상기 블레이드, 롤러 및 실린더는 블레이드 > 롤러 > 실린더의 관계식을 만족하는 열팽창계수를 갖는 재료로 형성되어 있어, 압력배출은 유체 역류 또는 작동시간에서의 저온조건하에서 케이스내에서 쉽게 실행되며, 작동동안 고온조건하에서 압축성능이 개선될 수 있는 것을 특징으로 한다. The present invention relates to a fluid compressor, the fluid compressor comprising a spiral blade type compression mechanism, comprising: a cylinder; A roller disposed inside the cylinder; And a spiral blade sandwiched between the roller and the cylinder, wherein the blade, roller and cylinder are formed of a material having a coefficient of thermal expansion that satisfies the relationship of blade> roller> cylinder, such that It is easily executed in the case under low temperature conditions, and the compressive performance can be improved under high temperature conditions during operation.

Compressor

本发明提供一种具有耐磨性及针对耐磨性的可靠性的润滑层和具有该润滑层的压缩机。本发明的压缩机包括：润滑层，涂覆于旋转轴和轴承的摩擦部位；所述润滑层包含(a)Ti和(b)选自Cu、Co、Ni及Zr构成的群的至少一种金属相，具有由非晶质和纳米结晶质构成的复合结构。

Magnetic drive centrifugal pump

A magnetic drive centrifugal pump with a pump chamber (7) containing a turbine (63) rotated by means of a magnetic coupling with a drive shaft (39) located outside the chamber (7). A magnetic flux-permeable confinement casing (25) inserted between the turbine (63) and the drive shaft (39) has a convex portion facing the chamber (7), where it is surrounded by a skirt (64) of the turbine (63), and a concave portion facing away from the chamber (7) for housing the drive shaft (39). The magnetic coupling means (47, 72) are supported by the skirt (64) and the drive shaft (39) respectively. Said confinement casing (25) operates in favourable conditions such that it may be made of a ceramic material and act to guide the turbine (63) during rotation and stop said turbine (63) during translation.

Micro-electromechanical actuator

A micro-electromechanical actuator includes a pair of elongate layers capable of being heated with an electrical current to thermally expand and to perform work. A pair of spacers separates the elongate layers from each other. The spacers are arranged at respective opposite ends of the elongate layers and are fast with the layers so that the actuator is deflected when one of the layers is heated.

Compressor with gas-bearing piston

In einem Verdichter mit einem Zylinder (22, 23) und einem in dem Zylinder (22, 23) oszillierend bewegbaren und quer zur Bewegungsrichtung spielbehafteten Kolben (25), bei dem eine Stirnfläche (31) des Kolbens (25) in dem Zylinder (22, 23) eine Verdichtungskammer (26) begrenzt, weist der Kolben (25) einen zu der Stirnfläche (31) hin abnehmenden Durchmesser auf. In a compressor having a cylinder (22, 23) and a piston (25) oscillating in the cylinder (22, 23) and playable transversely to the direction of motion, in which an end face (31) of the piston (25) in the cylinder (22 , 23) delimits a compression chamber (26), the piston (25) has a diameter which decreases towards the end face (31).

Thermoelastic device comprising an expansive element formed from a preselected material

A thermoelastic device comprising an expansive element is disclosed. The expansive element is formed from a material, which is preselected by calculating a dimensionless constant for the material. The dimensionless constant is indicative of the potential effectiveness of the material in a particular application, such as a micro-electromechanical system.

Magnetpumpe

Lageranordnung zur verwendung in einer pumpe

Verdichter

プランジャポンプ

【課題】あらゆる使用条件下においても析出や固着によるポンプ停止を防ぐ。【解決手段】プランジャポンプは、内部にシリンダ室を有するシリンダと、外周面が前記シリンダの内周面に摺接するように前記シリンダ室に対して進退自在に配置されると共に、先端部外周にカット面が形成されたプランジャと、前記シリンダに、前記シリンダ室に繋がるように設けられた吸込口及び吐出口とを備えたプランジャポンプであって、前記シリンダは、前記シリンダ室を有するシリンダ部と、前記プランジャの前記シリンダ室に進退する部分よりも基端側の部分と摺動するスペーサ部とを備え、前記シリンダ部は、第１の硬度の材料からなり、前記スペーサ部は、前記第１の硬度より柔らかい第２の硬度の材料からなり、前記スペーサ部の前記プランジャとの摺動部分の基端から前記スペーサ部の先端までの前記軸方向の長さは、前記プランジャの往復運動の最大ストローク長よりも長い。【選択図】図３

Kolben far Verbrennungsmotor

Die vorliegende Erfindung betrifft einen Kolben (10), der sich reziprok in dem Zylinder eines Verbrennungsmotors bewegt und einen Kolbenschaft (12) aufweist, der in Gleitkontakt mit der Innenwand des Zylinders steht. Feste Schmiermittelteile (30) sind an der Gleitkontaktfläche des Kolbenschafts (12) bereitgestellt. Die festen Schmiermittelteile (30) umfassen wenigstens einen Typ von Silber, Silberlegierung, Kupfer oder Kupferlegierung, und wenigstens einen Typ von Kohlenstoffmaterial oder Karbidkeramiken.

Compresor rotativo

Un compresor rotativo (1) que comprende: una carcasa vertical sellada (10) del compresor en la que está dispuesta una unidad de descarga de refrigerante en una parte superior y una unidad de entrada de refrigerante en una superficie lateral de la parte inferior; una unidad (12) de compresión que está dispuesta en la parte inferior de la carcasa del compresor, incluye un cilindro anular, una placa de extremo que tiene una unidad de cojinete y una unidad de válvula de descarga y que bloquea partes de extremo del cilindro, un pistón anular que se acopla con una parte excéntrica de un eje de rotación soportado por la unidad de cojinete, da vueltas a lo largo de una pared interior del cilindro en el cilindro, y forma una cámara del cilindro entre la pared interior del cilindro y el pistón anular, y una paleta que sobresale hacia fuera desde una ranura de paleta dispuesta en el cilindro hasta el interior de la cámara del cilindro y está en contacto con el pistón anular para dividir la cámara del cilindro en una cámara de entrada y una cámara de compresión, succiona un refrigerante a través de la unidad de entrada, y descarga el refrigerante desde la unidad de descarga a través de la carcasa del compresor; y un motor (11) que está dispuesto en la parte superior de la carcasa del compresor, y acciona la unidad de compresión a través del eje de rotación, en donde un material primario de la paleta es un material de acero que contiene cromo, una capa de recubrimiento simple de cromo como primera capa (127SD1, 127TD1), una capa de recubrimiento intermedia que tiene un gradiente de concentración de cromo y carbono como segunda capa (127SD2, 127TD2), y una tercera capa (127SD3, 127TD3) están formadas en una superficie deslizante en contacto con el pistón anular, en orden comenzando desde la superficie del material primario, y la capa de recubrimiento intermedia tiene una concentración de cromo más alta que una concentración de carbono en el lado de la primera capa y tiene la ...

Rotary compressor

In a rotary compressor (1), a parent material of a vane is a steel material containing chromium, a single coating layer of chromium as a first layer, an intermediate coating layer having a concentration gradient of chromium and carbon as a second layer, and a diamond-like carbon coating layer as a third layer are formed on a sliding surface with respect to a annular piston, in order starting from the surface of the parent material, and the intermediate coating layer has a chromium concentration higher than a carbon concentration on the first layer side and has the carbon concentration higher than the chromium concentration on the third layer side. 124S,124T 12S,12T 129S,129T 5122S,T22T 190S,1090T 128S,128T 127S,1 27T -- 135S,135T 131 S, 131 T 121 S,121 T 125S,1 25T 0152S,1 52T 133S,133T 123S,1I23T 00 O 130S, I3°T

Rotary compressor

Rotary engine with housing having silicon carbide plate

A rotary internal combustion engine has: a rotor; a housing circumscribing a rotor cavity, the rotor received within the rotor cavity, the housing having a peripheral wall and a side housing assembly secured to the peripheral wall, the side housing assembly having plates located at spaced apart ends of the peripheral wall, the plates defining seal running surfaces in sealing engagement with opposed end faces of the rotor, the plates made of silicon carbide.

ハイブリッドセラミックマトリックス複合材料タービンベーンアセンブリ及びその製造方法

【課題】 ハイブリッドタービンブレードの安価な製造方法の提供。 【解決手段】 ハイブリッドタービンブレード（１０）は、複合材シェル（１４）で複合材コア（１６）を囲繞してなり、上記複合材コアは炭化ケイ素とケイ素と炭素の混合物を含み、上記複合材シェルは巻回又は製織セラミックカーバイド繊維材料を含む。ブレードの製造方法は、（ａ）炭素プリフォームを成形し、（ｂ）炉内でプリフォームをケイ素の融点よりも高い温度でケイ素と反応させて、炭化ケイ素とケイ素と炭素の混合物からなるＣＭＣ複合材コア部品（１６）を形成し、（ｃ）ＣＭＣ複合材コア部品に隣接して仮マンドレルコア部品（１８）を配置してマルチコアアセンブリを形成し、（ｄ）マルチコアアセンブリの周囲にプリプレグテープをレイアップして複合材シェル（１４）を形成し、（ｅ）仮マンドレルコア（１８）を除去することを含む。 【選択図】 図１

Neue komponente einer hydraulischen maschine, verfahren zur herstellung oder reparatur einer solchen komponente

Zahnradpumpe

Bauteile von Pumpen, insbesondere Lager- und Schleißteile mit Drehsicherung

Plunger pump

A plunger pump includes a cylinder section having a cylinder chamber and a spacer section sliding against a portion of the plunger closer to a proximal end side than a portion of a plunger advancing and retracting into the cylinder chamber. The cylinder section is made of a material having first hardness, and the spacer section being made of a resin material having second hardness softer than the first hardness. A length in an axial direction from a proximal end of a sliding portion of the spacer section sliding against the plunger to a distal end of the spacer section is larger than a maximum stroke length of reciprocation of the plunger.

Hochdruck-kolbenpumpe für die brennstoffeinspritzung einer brennkraftmaschine

Floating tooling assembly for chemical vapor infiltration

A tooling assembly (10) suitable for use in infiltrating a fibrous preform comprises an outer tooling fixture (12) and an inner tooling fixture (14). The outer tooling fixture (12) comprises a first portion (20) removably attached to a second portion (20), and a first pair of oppositely disposed windows (28) defined by the first portion (20) and the second portion (20). Each of the first portion (20) and the second portion (20) comprises a base (22) with a recess. The inner tooling fixture (14) comprises a body defined by at least one portion (20), the body configured to at least partially surround the fibrous preform, a plurality of holes extending through a thickness of the at least one portion (20), each hole of the plurality of holes having a length (L) and a diameter (D), and a first neck region engageable with a recess of the first portion (20) or the second portion (20).

Intermediate drive assembly

一种碳化硼超轻耐磨陶瓷眼镜板

本发明公开了一种碳化硼超轻耐磨陶瓷眼镜板，其特征在于，包括眼镜板主体(1)、耐磨内圈(2)、碳化硼陶瓷耐磨面板(3)，所述眼镜板主体(1)内设有两个对称的通孔，所述耐磨内圈(2)固定于所述通孔内；所述碳化硼陶瓷耐磨面板(3)固定于所述眼镜板主体(1)的工作面上且顶面与所述耐磨内圈(2)顶面齐平，所述碳化硼陶瓷耐磨面板(3)包括围绕两个耐磨内圈(2)安装的至少各一块的异形陶瓷块一(4)、异形陶瓷块二(5)、异形陶瓷块三(6)和异形陶瓷块四(7)；本发明提供的碳化硼陶瓷眼镜板使用寿命长，且价格低；经济效益显著，且减少了因更换损坏眼镜板的时间。