BRPI1009955A2 - piston - reciprocating compressor cylinder assembly - Google Patents

piston - reciprocating compressor cylinder assembly Download PDF

Info

Publication number
BRPI1009955A2
BRPI1009955A2 BRPI1009955-7A BRPI1009955A BRPI1009955A2 BR PI1009955 A2 BRPI1009955 A2 BR PI1009955A2 BR PI1009955 A BRPI1009955 A BR PI1009955A BR PI1009955 A2 BRPI1009955 A2 BR PI1009955A2
Authority
BR
Brazil
Prior art keywords
piston
cylinder
cylinder assembly
amorphous carbon
surface roughness
Prior art date
Application number
BRPI1009955-7A
Other languages
Portuguese (pt)
Inventor
Marcio Silverio
Original Assignee
Whirlpool Sa
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 Whirlpool Sa filed Critical Whirlpool Sa
Priority to BRPI1009955-7A priority Critical patent/BRPI1009955A2/en
Priority to SG2013050299A priority patent/SG191408A1/en
Priority to CN201180064821.6A priority patent/CN103298972B/en
Priority to EP11854223.2A priority patent/EP2659025A1/en
Priority to KR1020137018894A priority patent/KR20140067961A/en
Priority to PCT/BR2011/000460 priority patent/WO2012088571A1/en
Priority to JP2013546527A priority patent/JP2014502691A/en
Priority to ARP110104945A priority patent/AR084603A1/en
Priority to TW100149001A priority patent/TWI461605B/en
Publication of BRPI1009955A2 publication Critical patent/BRPI1009955A2/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/26—Deposition of carbon only
    • C23C16/27—Diamond only
    • 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
    • F04B35/045—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 using solenoids
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • 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
    • 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
    • F04B39/12—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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • 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
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • 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
    • 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
    • F05C2203/083—Nitrides
    • 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
    • F05C2203/0856—Sulfides
    • 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
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/12—Coating

Abstract

CONJUNTO PISTçO - CILINDRO PARA COMPRESSOR ALTERNATIVO. A presente invenção se refere a um conjunto pistão-cilindro para compressor alternativo onde o pistão realiza um movimento reciprocante dentro do cilindro, em que a superfície (1) do pistão e a superfície do cilindro possuem uma rugosidade superficial com parâmetro Rpk de rugosidade de superfície abaixo de cerca de 6Onm e com parâmetro Rvk de rugosidade de superfície abaixo de 100 nm; e a superfície (1) do pistão recebe um revestimento que compreende pelo menos uma camada de suporte (2) e pelo menos uma camada de DLC (3).PISTON - ALTERNATIVE COMPRESSOR CYLINDER SET. The present invention relates to a reciprocating compressor piston-cylinder assembly wherein the piston reciprocates within the cylinder, wherein the piston surface (1) and the cylinder surface have a surface roughness with parameter Rpk surface roughness. below about 6 nm and with parameter Rvk of surface roughness below 100 nm; and the piston surface (1) receives a coating comprising at least one support layer (2) and at least one DLC layer (3).

Description

Relatório Descritivo da Patente de Invenção para "CONJUNTO PISTÃO - CILINDRO PARA COMPRESSOR ALTERNATIVO".Report of the Invention Patent for "PISTON - ALTERNATIVE COMPRESSOR CYLINDER SET".

Campo da InvençãoField of the Invention

A presente invenção se refere a um conjunto pistão - cilindro para compressores alternativos, e mais especificamente, a um conjunto pistão - cilindro para compressores lineares.The present invention relates to a piston - cylinder assembly for reciprocating compressors, and more specifically to a piston - cylinder assembly for linear compressors.

Fundamentos da InvençãoBackground of the Invention

Um compressor tem como função elevar a pressão de determinado volume de fluido a uma pressão necessária à realização de um ciclo de refrigeração. São conhecidos da técnica os chamados compressores alternativos, onde um pistão desliza reciprocantemente no interior de um cilindro para realizar a compressão dos gases.A compressor has the function of raising the pressure of a given volume of fluid to a pressure necessary to perform a refrigeration cycle. So-called reciprocating compressors are known in the art, where a piston slides reciprocally within a cylinder to perform gas compression.

O contato entre o pistão reciprocante e o cilindro pode gerar elevadas perdas mecânicas, e pode levar ao desgaste e falha prematura do compressor. Além disso, esse contato entre as partes pode gerar aumento de ruído, elevação da temperatura de operação, aumento da vibração do compressor, e perda de eficiência, contribuindo inclusive para o aumento do consumo de energia do equipamento.Contact between reciprocating piston and cylinder can lead to high mechanical losses, and can lead to premature compressor wear and failure. In addition, this contact between parts can lead to increased noise, increased operating temperature, increased vibration of the compressor, and loss of efficiency, even contributing to increased equipment power consumption.

Em alguns tipos de compressores é previsto um óleo lubrificante entre as partes móveis, entretanto, para algumas aplicações em compressores lineares a presença do óleo é prejudicial.In some types of compressors a lubricating oil is provided between the moving parts, however for some applications in linear compressors the presence of the oil is detrimental.

Na tentativa de resolver o problema relacionado ao atrito pistão - cilindro sem o usoIn an attempt to solve the problem related to piston - cylinder friction without using

de óleo lubrificante, algumas soluções técnicas foram desenvolvidas no sentido de usar revestimentos especiais para tais peças.In addition to lubricating oil, some technical solutions have been developed to use special coatings for such parts.

Esse é o caso, por exemplo, das soluções descritas nos documentos US 6,641,337 e JP 2001107860, onde as quais descrevem a aplicação de DLC (Diamond-Like Carbon) às partes móveis do compressor.This is the case, for example, with the solutions described in US 6,641,337 and JP 2001107860, where they describe the application of Diamond-Like Carbon (DLC) to moving parts of the compressor.

Ocorre que mesmo essas soluções conhecidas não resolvem completamente o problema do atrito e conseqüente desgaste entre as peças, já que a concentração de tensões de contato sobre os picos das asperezas do DLC acaba levando ao desgaste prematuro do revestimento. Objetivos da InvençãoIt turns out that even these known solutions do not completely solve the problem of friction and consequent wear between parts, as the concentration of contact stresses on the DLC roughness peaks leads to premature coating wear. Objectives of the Invention

Portanto, é um dos objetivos da presente invenção prover um conjunto pistão- cilindro para um compressor alternativo, que proporcione um menor atrito entre o pistão e o cilindro, impedindo o desgaste prematuro das peças.Therefore, it is an object of the present invention to provide a piston-cylinder assembly for an reciprocating compressor that provides less friction between the piston and the cylinder, preventing premature wear of the parts.

Sumário da InvençãoSummary of the Invention

A presente invenção atinge os objetivos acima por meio de um conjunto pistão-The present invention achieves the above objectives by means of a piston-

cilindro para compressor alternativo onde o pistão realiza um movimento reciprocante dentro do cilindro, em que a superfície do pistão e a superfície do cilindro possuem uma rugosidade superficial com parâmetro Rpk de rugosidade de superfície abaixo de cerca de 60nm e com parâmetro Rvk de rugosidade de superfície abaixo de 100 nm; e a superfície do pistão recebe um revestimento que compreende pelo menos uma camada de suporte e pelo menos uma camada de DLC (3).reciprocating compressor cylinder where the piston reciprocates within the cylinder, wherein the piston surface and the cylinder surface have a surface roughness with parameter Rpk surface roughness below about 60nm and with parameter Rvk surface roughness below 100 nm; and the piston surface receives a coating comprising at least one backing layer and at least one DLC layer (3).

Na concretização preferida da presente invenção, o material do cilindroIn the preferred embodiment of the present invention, the cylinder material

compreende de aço inox, o material da camada de suporte é selecionado dentre nitretos e sulfetos, e o material da camada de DLC é selecionado dentre carbono amorfo não hidrogenado, carbono amorfo hidrogenado, carbono amorfo tetragonal não hidrogenado, e carbono amorfo tetragonal hidrogenado. A camada de DLC pode compreender ainda elementos de liga metálicos ou não metálicos.comprises stainless steel, the backing layer material is selected from nitrides and sulfides, and the DLC layer material is selected from unhydrogenated amorphous carbon, hydrogenated amorphous carbon, unhydrogenated tetragonal amorphous carbon, and hydrogenated tetragonal amorphous carbon. The DLC layer may further comprise metallic or non-metallic alloying elements.

Descrição Resumida dos DesenhosBrief Description of the Drawings

As figuras mostram:The figures show:

Figura 1 - ilustra uma vista esquemática do revestimento de pistão no conjunto pistão-cilindro de acordo com a concretização preferida da presente invenção. Figura 2 - ilustra uma representação gráfica comparativa entre a presente invençãoFigure 1 illustrates a schematic view of the piston liner in the piston-cylinder assembly according to the preferred embodiment of the present invention. Figure 2 illustrates a comparative graphical representation of the present invention.

e a solução do estado da técnica.and the state of the art solution.

Figura 3 - uma representação esquemática das superfícies revestidas do conjunto pistão-cilindro de acordo com a concretização preferida da presente invenção.Figure 3 is a schematic representation of the coated surfaces of the piston-cylinder assembly in accordance with the preferred embodiment of the present invention.

Descrição Detalhada da Invenção A presente invenção será, a seguir, mais detalhadamente descrita com base nosDetailed Description of the Invention The present invention will hereinafter be described in more detail based on the following

exemplos de execução representados nos desenhos apensos.execution examples shown in the accompanying drawings.

De modo a garantir o correto funcionamento do conjunto pistão - cilindro sem afetar a perda de eficiência em função do desgaste e da inexistência de lubrificação por óleo lubrificante, a presente invenção propõe o revestimento da superfície externa do pistão com filmes finos de DLC (Diamond-Like Carbon) em associação com um revestimento de base que aumenta a resistência mecânica do revestimento de DLC aplicado na superfície.In order to ensure the correct operation of the piston - cylinder assembly without affecting the loss of efficiency due to wear and lack of lubrication by lubricating oil, the present invention proposes the coating of the outer surface of the piston with DLC (Diamond) thin films. Like Carbon) in combination with a base coat that increases the mechanical strength of the surface applied DLC coating.

Assim, conforme pode ser visto na figura 1, a presente invenção compreende um pistão 1 (apenas parte de sua superfície externa sendo ilustrada) que recebe um revestimento composto preferencialmente por uma camada de suporte mecânico 2 e uma camada de DLC 3. Na concretização preferida da presente invenção, as camadas de suporte 2 e DLC 3 geram um revestimento com espessura de aproximadamente 3-10 micrometros.Thus, as can be seen from Figure 1, the present invention comprises a piston 1 (only part of its outer surface being illustrated) which receives a coating composed preferably of a mechanical backing layer 2 and a DLC layer 3. In the preferred embodiment of the present invention, backing layers 2 and DLC 3 generate a coating thickness of approximately 3-10 micrometers.

A camada de suporte 2 pode compreender um único elemento ou múltiplos elementos dispostos da seguintes forma: composição química gradualmente variável, composição química constante, monocamada ou multicamada.The backing layer 2 may comprise a single element or multiple elements arranged as follows: gradually variable chemical composition, constant, monolayer or multilayer chemical composition.

Além disso, a composição da camada de suporte 2 pode variar de acordo com as solicitações mecânicas do projeto específico do conjunto p-istão- cilindro, sendo que a camada pode compreender nitretos, (CrN, FeN1 TiN, AITiN1 CAITiN, etc), sulfetos (MoS2 e variações, WS2 e variações, etc); e outros revestimentos de dureza intermediária entre o substrato e o DLC, com o objetivo de dar suporte mecânico às cargas elevadas atuando sobre o pistão.In addition, the composition of the backing layer 2 may vary according to the mechanical demands of the specific design of the p-ist-cylinder assembly, and the layer may comprise nitrides, (CrN, FeN1 TiN, AITiN1 CAITiN, etc.), sulfides. (MoS2 and variations, WS2 and variations, etc.); and other coatings of intermediate hardness between the substrate and the DLC, to provide mechanical support to the high loads acting on the piston.

Já a camada de DLC 3 é constituída de um revestimento a base de carbono com proporções variáveis de hidrogênio, podendo conter as seguintes variações: a-C (Carbono Amorfo não Hidrogenado); a-C:H (Carbono Amorfo Hidrogenado); ta-C (Carbono Amorfo Tetragonal não Hidrogenado); ta-C:H (Carbono Amorfo Tetragonal Hidrogenado). Além destas variações a adição de elementos de liga pode ser utilizada para obtenção de propriedades específicas para cada aplicação, essa camada com adição de elementos de liga é denominada Me-DCL, onde Me refere-se a elementos adicionados (metal ou não metal).The DLC layer 3 is composed of a carbon-based coating with varying proportions of hydrogen, and may contain the following variations: a-C (Unhydrogenated Amorphous Carbon); α-C: H (Hydrogenated Amorphous Carbon); ta-C (Unhydrogenated Tetragonal Amorphous Carbon); ta-C: H (Hydrogenated Tetragonal Amorphous Carbon). In addition to these variations, the addition of alloying elements can be used to obtain specific properties for each application, this alloying layer is called Me-DCL, where Me refers to added elements (metal or non-metal).

A disposição da camada 3 também pode apresentar variações quanto à proporção de elementos de liga, e pode ser, por exemplo: composição química gradualmente variável, composição química constante, monocomposto, ou variações de DLC dispostas de forma intercalada.The arrangement of layer 3 may also vary in the proportion of alloying elements, and may be, for example: gradually variable chemical composition, constant chemical composition, single compound, or interleaved arranged DLC variations.

A aplicação da camada DLC se dá após um preparo da superfície do pistão que receberá a camada. Esse preparo envolve um processo de acabamento superficial de modo a obter uma rugosidade de superfície com parâmetros Rpk< 60nm e Rvk < 100 nm obtidos por medição topográfica das superfícies. De modo a garantir a diminuição do atrito no conjunto pistão - cilindro, a superfícieThe application of the DLC layer occurs after a preparation of the piston surface that will receive the layer. This preparation involves a surface finishing process to obtain a surface roughness with parameters Rpk <60nm and Rvk <100 nm obtained by topographic surface measurement. In order to ensure reduced friction in the piston - cylinder assembly, the surface

do cilindro também é preparada de modo que seja obtida uma superfície de cilindro com rugosidade de superfície com parâmetros Rpk< 60nm e Rvk < 100 nm obtidos por medição topográfica das superfícies.The cylinder surface is also prepared so that a surface roughness cylinder surface with parameters Rpk <60nm and Rvk <100 nm obtained by topographic surface measurement is obtained.

Nesse sentido, a figura 2 mostra esquematicamente o desgaste do revestimento DLC em uma superfície sem a rugosidade acima especificada (figuras a) e b)) e com a rugosidade acima especificada (figuras c) e d)).In this sense, Figure 2 schematically shows the wear of the DLC coating on a surface without the above specified roughness (Figures a) and b)) and with the above specified roughness (Figures c) and d)).

Como pode ser visto nas figuras a) e b), na condição de rugosidade elevada, ocorre um desgaste prematuro da camada DLC devido à concentração de tensões de contato sobre o pico das asperezas de superfície (ou seja, acabam sendo formadas áreas de apoio pontuais sobre a camada).. Tal desgaste prematuro acaba deixando o substrato do pistão exposto.As can be seen from figures a) and b), in the condition of high roughness, premature wear of the DLC layer occurs due to the concentration of contact stresses over the surface roughness peak (ie, point-bearing areas eventually form over the surface). the layer). Such premature wear ends up leaving the piston substrate exposed.

No entanto, quando a rugosidade está dentro dos parâmetros propostos na presente invenção - como nas figuras c) e d), ocorre um desgaste gradual e suave da camada DLC, devido a formação de uma maior área de apoio entre as superfícies com a conseqüente redução das tensões de contato.However, when the roughness is within the parameters proposed in the present invention - as in figures c) and d), a gradual and gentle wear of the DLC layer occurs, due to the formation of a larger support area between the surfaces with the consequent reduction of the surfaces. contact voltages.

Na concretização preferida da presente invenção, o cilindro do conjunto pistão - cilindro é fabricado de aço inox. Conforme melhor observado na figura 3, a utilização de um cilindro de aço inox possibilita a formação de uma tribocamada uniformemente distribuída em ambas as interfaces de contato devido ao movimento relativo entre as partes. Esta tribocamada é formada devido à eliminação (por desgaste brando) dos picos das asperezas do aço Inox do cilindro e do DLC1 bem como resíduos dos materiais empregados nas demais partes do compressor e da atmosfera de aplicação do mesmo.In the preferred embodiment of the present invention, the piston-cylinder assembly cylinder is made of stainless steel. As best seen in Figure 3, the use of a stainless steel cylinder enables the formation of a uniformly distributed triboclayer at both contact interfaces due to relative movement between the parts. This triboclayer is formed due to the elimination (by mild wear) of the roughness peaks of the stainless steel of the cylinder and the DLC1 as well as residues of the materials employed in the other parts of the compressor and the atmosphere of application thereof.

Assim, a formação de um revestimento em DLC mais duradouro com a fabricação de uma das peças do conjunto pistão-cilindro de aço inox, garante a formação da tribocamada , essencial para o funcionamento do par tribológico, permitindo o conjunto pistão-cilindro funcione sem desgaste significativo, baixo atrito e durabilidade adequada.Thus, the formation of a longer lasting DLC coating by manufacturing one of the parts of the stainless steel piston-cylinder assembly ensures the formation of the tribolayer, essential for the operation of the tribological pair, allowing the piston-cylinder assembly to work without wear. significant, low friction and adequate durability.

Deve ser entendido que a descrição fornecida com base nas figuras acima se refere apenas a uma das concretizações possíveis para o objeto da presente invenção, sendo que o real escopo do objeto encontra-se definido nas reivindicações apensas.It is to be understood that the description provided on the basis of the figures above refers only to one of the possible embodiments for the object of the present invention, and the actual scope of the object is defined in the appended claims.

Claims (5)

1. Conjunto pistão-cilindro para compressor alternativo onde o pistão realiza um movimento reciprocante dentro do cilindro, CARACTERIZADO pelo fato de que: a superfície (1) do pistão e a superfície do cilindro possuem uma rugosidade superficial com parâmetro Rpk de rugosidade de superfície abaixo de cerca de 60nm e com parâmetro Rvk de rugosidade de superfície abaixo de 100 nm; a superfície (1) do pistão recebe um revestimento que compreende pelo menos uma camada de suporte (2) e pelo menos uma camada de DLC (3).1. Piston-to-reciprocating compressor assembly where the piston reciprocates within the cylinder, CHARACTERIZED by the fact that: piston surface (1) and cylinder surface have a surface roughness with Rpk parameter of surface roughness below of about 60nm and with surface roughness parameter Rvk below 100 nm; the piston surface (1) receives a coating comprising at least one backing layer (2) and at least one DLC layer (3). 2. Conjunto pistão - cilindro, de acordo com a reivindicação 1, CARACTERIZADO pelo fato de que o material do cilindro compreende de aço inox.Piston - cylinder assembly according to claim 1, characterized in that the cylinder material comprises stainless steel. 3. Conjunto pistão - cilindro, de acordo com a reivindicação 1 ou 2, CARACTERIZADO pelo fato de que o material da camada de suporte (2) é selecionado dentre nitretos e sulfetos.Piston - cylinder assembly according to claim 1 or 2, characterized in that the material of the backing layer (2) is selected from nitrides and sulfides. 4. Conjunto pistão - cilindro, de acordo com a reivindicação 1, 2 ou 3, CARACTERIZADO pelo fato de que o material da camada de DLC (3) é selecionado dentre carbono amorfo não hidrogenado, carbono amorfo hidrogenado, carbono amorfo tetragonal não hidrogenado, e carbono amorfo tetragonal hidrogenado, ou combinação destes.Piston-cylinder assembly according to claim 1, 2 or 3, characterized in that the DLC layer material (3) is selected from unhydrogenated amorphous carbon, hydrogenated amorphous carbon, unhydrogenated tetragonal amorphous carbon, and hydrogenated tetragonal amorphous carbon, or a combination thereof. 5. Conjunto pistão - cilindro, de acordo com a reivindicação 4, CARACTERIZADO pelo fato de que a camada de DLC (3) compreende ainda elementos de liga metálicos ou não metálicos.Piston-cylinder assembly according to claim 4, characterized in that the DLC layer (3) further comprises metallic or non-metallic alloying elements.
BRPI1009955-7A 2010-12-27 2010-12-27 piston - reciprocating compressor cylinder assembly BRPI1009955A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
BRPI1009955-7A BRPI1009955A2 (en) 2010-12-27 2010-12-27 piston - reciprocating compressor cylinder assembly
SG2013050299A SG191408A1 (en) 2010-12-27 2011-12-08 Piston assembly for alernative compressor
CN201180064821.6A CN103298972B (en) 2010-12-27 2011-12-08 Piston component for reciprocating compressor
EP11854223.2A EP2659025A1 (en) 2010-12-27 2011-12-08 Piston assembly for alernative compressor
KR1020137018894A KR20140067961A (en) 2010-12-27 2011-12-08 Piston assembly for alernative compressor
PCT/BR2011/000460 WO2012088571A1 (en) 2010-12-27 2011-12-08 Piston assembly for alernative compressor
JP2013546527A JP2014502691A (en) 2010-12-27 2011-12-08 Piston assembly for alternative compressor
ARP110104945A AR084603A1 (en) 2010-12-27 2011-12-27 PISTON ASSEMBLY FOR AN ALTERNATIVE COMPRESSOR
TW100149001A TWI461605B (en) 2010-12-27 2011-12-27 Piston assembly for alternative compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BRPI1009955-7A BRPI1009955A2 (en) 2010-12-27 2010-12-27 piston - reciprocating compressor cylinder assembly

Publications (1)

Publication Number Publication Date
BRPI1009955A2 true BRPI1009955A2 (en) 2013-06-11

Family

ID=46382111

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI1009955-7A BRPI1009955A2 (en) 2010-12-27 2010-12-27 piston - reciprocating compressor cylinder assembly

Country Status (9)

Country Link
EP (1) EP2659025A1 (en)
JP (1) JP2014502691A (en)
KR (1) KR20140067961A (en)
CN (1) CN103298972B (en)
AR (1) AR084603A1 (en)
BR (1) BRPI1009955A2 (en)
SG (1) SG191408A1 (en)
TW (1) TWI461605B (en)
WO (1) WO2012088571A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104251195A (en) 2013-06-28 2014-12-31 Lg电子株式会社 Linear compressor
CN104251196B (en) 2013-06-28 2016-10-05 Lg电子株式会社 Linearkompressor
CN203770066U (en) 2013-06-28 2014-08-13 Lg电子株式会社 Linear compressor
CN104251192B (en) 2013-06-28 2016-10-05 Lg电子株式会社 Linearkompressor
CN104251193A (en) 2013-06-28 2014-12-31 Lg电子株式会社 Linear compressor
CN104251191B (en) 2013-06-28 2017-05-03 Lg电子株式会社 Linear compressor
MX2019001159A (en) 2016-07-29 2019-11-07 Ind Mailhot Inc A cylinder piston rod and method of fabrication thereof.

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW394800B (en) * 1995-01-17 2000-06-21 Qqc Inc Surface modification and/or fabrication techniques
JP3340001B2 (en) * 1995-10-31 2002-10-28 京セラ株式会社 Wear-resistant material
DE19850346C2 (en) * 1998-11-02 2003-06-26 Fraunhofer Ges Forschung Polycrystalline diamond layer with optimized surface properties
US6491987B2 (en) * 1999-05-03 2002-12-10 Guardian Indusries Corp. Process for depositing DLC inclusive coating with surface roughness on substrate
JP3914657B2 (en) * 1999-05-11 2007-05-16 カヤバ工業株式会社 Piston surface treatment method
JP2001107860A (en) * 1999-10-07 2001-04-17 Matsushita Refrig Co Ltd Sliding member
JP2001234858A (en) * 1999-12-13 2001-08-31 Sumitomo Heavy Ind Ltd Gas compressor
JP3590579B2 (en) * 2000-12-11 2004-11-17 オーエスジー株式会社 Diamond coated member and method of manufacturing the same
JP2003013958A (en) * 2001-06-26 2003-01-15 Nissan Motor Co Ltd Slide bearing and manufacturing method
SE526481C2 (en) * 2003-01-13 2005-09-20 Sandvik Intellectual Property Surface hardened stainless steel with improved abrasion resistance and low static friction
EP1479946B1 (en) * 2003-05-23 2012-12-19 Nissan Motor Co., Ltd. Piston for internal combustion engine
CN100587045C (en) * 2003-08-06 2010-02-03 日产自动车株式会社 Low-friction sliding mechanism, low-friction agent composition and method of reducing friction
JP4539205B2 (en) * 2003-08-21 2010-09-08 日産自動車株式会社 Refrigerant compressor
JP4076169B2 (en) * 2004-07-06 2008-04-16 株式会社豊田中央研究所 Piston ring, piston, cylinder, piston pin with amorphous hard carbon film
US20080000348A1 (en) * 2004-12-23 2008-01-03 Bsh Bosch Und Siemens Hausgerate Gmbh Linear Compressor
CN101365824B (en) * 2005-08-18 2010-09-01 贝卡尔特股份有限公司 Substrate coated with a layered structure comprising a tetrahedral carbon coating
JP4683288B2 (en) * 2005-12-28 2011-05-18 株式会社豊田自動織機 Sliding member
JP5030439B2 (en) * 2006-02-28 2012-09-19 株式会社リケン Sliding member
US20090286352A1 (en) * 2006-04-18 2009-11-19 Chien-Min Sung Diamond Bodies Grown on SIC Substrates and Associated Methods
JP4954644B2 (en) * 2006-08-31 2012-06-20 日本ピストンリング株式会社 Combination of cylinder liner and piston ring
TW200927294A (en) * 2007-09-14 2009-07-01 Showa Denko Kk Apparatus and method for coating double-sided substrate
DE112008003230T5 (en) * 2007-11-30 2010-10-07 Nippon Piston Ring Co., Ltd. Steel products for piston rings and piston rings
DE102008011921A1 (en) * 2008-02-29 2009-09-10 Ks Kolbenschmidt Gmbh Coating of components of an internal combustion engine to reduce friction, wear and adhesion tendency
JP2010025075A (en) * 2008-07-24 2010-02-04 Panasonic Corp Sliding member and hermetic compressor
DE102009046281B3 (en) * 2009-11-02 2010-11-25 Federal-Mogul Burscheid Gmbh Sliding element, in particular piston ring, and combination of a sliding element with a running partner

Also Published As

Publication number Publication date
TW201235566A (en) 2012-09-01
CN103298972A (en) 2013-09-11
EP2659025A1 (en) 2013-11-06
KR20140067961A (en) 2014-06-05
WO2012088571A1 (en) 2012-07-05
TWI461605B (en) 2014-11-21
JP2014502691A (en) 2014-02-03
AR084603A1 (en) 2013-05-29
CN103298972B (en) 2016-12-21
SG191408A1 (en) 2013-08-30

Similar Documents

Publication Publication Date Title
BRPI1009955A2 (en) piston - reciprocating compressor cylinder assembly
BR112012022007B1 (en) PISTON RING, AND A METHOD FOR COATING A PISTON RING
US9816613B2 (en) Coated sliding element
CN104235186B (en) Joint bearing lubricant system
BR102012016191B1 (en) piston ring with dlc coating
US20090026712A1 (en) Sliding Member
BR112012010336B1 (en) sliding element and combination of a sliding element
BR112012016440B1 (en) SLIDING ELEMENT, IN PARTICULAR PISTON RING, HAVING A COATING, AND PROCESS FOR PRODUCING A SLIDING ELEMENT
AU2004225801A1 (en) Piston with a skirt having a low coefficient of friction
US20130315513A1 (en) Tribological pair and process for surface treatment in tribological pairs
CN107035564B (en) Sliding element
BR112012022008B1 (en) A composite helical spring for a ring of a piston of an internal combustion engine, and a method for coating a helical compression spring
US11867205B2 (en) Cylinder piston rod and method of fabrication thereof
Zhu et al. Tribological performance of three surface-modified piston rings matched with chromium-plated cylinder liner
US20140020555A1 (en) Piston assembly for alternative compressor
ES2948670T3 (en) internal combustion engine jacket
JP2000320674A (en) Low friction material and manufacture thereof
KR101079168B1 (en) Coating method of Flourine-Silicon composite with lubrication particle alloying
KR20100014295A (en) Refrigerant compressor sliding surface with non-integral reaction layer
Lesnevskiy et al. Inorganic solid lubricating coatings for heat engines and power plants
RU2781699C1 (en) Part for direction of element movable in oscillatory motion or rotary motion, mechanical system including specified part, and method for manufacture of specified part
US20220074400A1 (en) Composite structures for reciprocating gas compressor systems
BR112015017292B1 (en) SLIDING ELEMENT, PARTICULARLY A PISTON RING, WITH A COATING
Kawada et al. Tribological Performance of Cyano-Based Ionic Liquids as Functional Fluid
KR101261987B1 (en) Surface treating process for swash plate type compressors

Legal Events

Date Code Title Description
B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A ANUIDADE.

B25A Requested transfer of rights approved

Owner name: EMBRACO INDUSTRIA DE COMPRESSORES E SOLUCOES E REFRIGERACAO LTDA. (BR/SC)

Owner name: EMBRACO INDUSTRIA DE COMPRESSORES E SOLUCOES E REF

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2495 DE 30-10-2018 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.