WO2022250475A1 - Oldham ring for scroll compressor having medium-entropy alloy applied thereto - Google Patents
Oldham ring for scroll compressor having medium-entropy alloy applied thereto Download PDFInfo
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- WO2022250475A1 WO2022250475A1 PCT/KR2022/007494 KR2022007494W WO2022250475A1 WO 2022250475 A1 WO2022250475 A1 WO 2022250475A1 KR 2022007494 W KR2022007494 W KR 2022007494W WO 2022250475 A1 WO2022250475 A1 WO 2022250475A1
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- oldham ring
- key
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- alloy material
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- 239000000956 alloy Substances 0.000 title claims abstract description 50
- 229910045601 alloy Inorganic materials 0.000 title claims description 27
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
-
- 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
- C23C14/14—Metallic material, boron or silicon
-
- 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
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
Definitions
- the present invention relates to an Oldham ring for a scroll compressor to which a novel mesoentropy alloy material is applied.
- a compressor is a machine used for generating high pressure or transporting high pressure fluid, and in the case of a compressor applied to a refrigeration cycle such as a refrigerator or an air conditioner, it compresses refrigerant gas and transfers it to a condenser.
- the scroll compressor is configured such that a fixed scroll is fixed to the inner space of the airtight case and the orbiting scroll is engaged with the fixed scroll to perform a pivoting motion.
- the orbiting scroll is operated to revolve around the fixed scroll, the refrigerant gas is continuously sucked, compressed, and discharged through the compression chamber continuously created between the fixed wrap of the fixed scroll and the orbiting wrap of the orbiting scroll.
- it is performed repeatedly.
- the revolution of the orbiting scroll is performed by receiving the rotational force of the rotational shaft driven by the driving unit, and at this time, the connection between the rotational shaft and the orbiting scroll is formed eccentrically with respect to the connection between the rotational shaft and the fixed scroll.
- an Oldham ring is provided between the orbiting scroll and the main frame of the compressor located opposite to the orbiting scroll to prevent rotation of the orbiting scroll.
- the Oldham rings are installed on opposite surfaces between the orbiting scroll and the main frame to be horizontally movable in different directions, thereby preventing the orbiting scroll from rotating.
- keys located at the top protrude from both sides of the upper surface of the Oldham ring (e.g., left and right sides) and are accommodated in key grooves formed on both sides of the bottom surface of the main frame opposite thereto, so that they are horizontally moved in the left and right directions within the corresponding key grooves
- Keys located at the bottom protrude from both sides of the bottom surface of the Oldham ring eg, the front and rear sides
- Keys located at the bottom protrude from both sides of the bottom surface of the Oldham ring eg, the front and rear sides
- key grooves formed on both sides (front and rear sides) of the upper surface of the orbiting scroll opposite to the keys so that they are horizontally moved in the forward and backward directions within the corresponding key grooves.
- the present invention is to solve the above problems, and an object of the present invention is to provide a novel Oldham ring for preventing abrasion of an orbiting scroll and an Oldham ring applied to a scroll compressor.
- Another object of the present invention is to provide a novel material that can be applied to a key surface of an Oldham ring for a scroll compressor.
- the Oldham ring for a scroll compressor according to the present invention to solve the above problems is structurally characterized in that a novel mesoentropy alloy material is positioned on at least a part of the surface of the key part formed in the ring-shaped body part.
- the Oldham ring includes: a body portion having a ring shape; a first key protruding from one side of the body portion; and a second key formed to protrude from the other side surface of the body, wherein a central entropy alloy material is located on at least a portion of a surface of the first key or the second key, wherein the central entropy alloy material comprises a multi-component alloy base and It includes Si, and the multi-component alloy matrix includes two or more of Cr, Co, Ni, and V, and includes an alloy having a face centered cubic (FCC)-based phase.
- FCC face centered cubic
- the Oldham ring of the present invention has excellent anti-wear performance by applying a novel mid-entropy alloy with improved mechanical properties at room temperature and high temperature.
- FIG. 1 is an anatomical cross-sectional view showing the inside of a scroll compressor.
- FIG. 2 is a perspective view illustrating an Oldham ring for a scroll compressor.
- 3 to 4 are partial perspective views illustrating a key portion of an Oldham ring according to an embodiment of the present invention.
- FIG. 1 the inside of the scroll compressor 100 to which the Oldham ring 10 is applied is shown.
- the Oldham rings 10 are installed on opposite surfaces between the orbiting scroll and the main frame to be horizontally movable in different directions, thereby preventing the orbiting scroll from rotating.
- keys positioned at the top protrude from both sides of the upper surface of the Oldham ring 10 (e.g., left and right sides) and are accommodated in key grooves formed on both sides of the bottom surface of the main frame that are opposite to the keys, so that they are horizontally moved in the left and right directions within the corresponding key grooves.
- the present invention applied a novel mesoentropy alloy material to the surface of the key part in order to solve the above-mentioned wear problem.
- the Oldham ring 10 of the present invention includes a body portion having a ring shape; a first key 1 formed to protrude from one side of the body portion; and a second key 2 formed to protrude from the other side of the body, wherein a medium entropy alloy material is located on at least a part of the surface of the first key 1 or the second key 2, and the middle
- the trophy alloy material includes a multi-component alloy matrix and Si, and the multi-component alloy matrix includes an alloy including at least two of Cr, Co, Ni, and V, and having a face centered cubic (FCC) phase.
- a method of applying the mesotropic alloy material to the surface of the key portion of the Oldham ring is not particularly limited.
- a medium entropy alloy material may be coated on the surface of the key portion of the Oldham ring using a chemical or physical vapor deposition method.
- a medium entropy alloy material may be manufactured in an arbitrary shape and attached to the surface of the key portion of the Oldham ring.
- the Oldham ring 10 of the present invention may include a coating layer C1 using a mesoentropy alloy material on the surface of the key portion 3 .
- the mesoentropy alloy material may be processed into a cap or crown shape and positioned on the surface of the key part 3 .
- the entropy alloy material according to an embodiment of the present invention is represented by the following Chemical Formula 1 and may include an alloy having a face centered cubic (FCC)-based single phase.
- FCC face centered cubic
- x may satisfy the condition of 0.15 ⁇ x ⁇ 0.3.
- the entropy alloy material according to an embodiment of the present invention is represented by the following Chemical Formula 2 and may include an alloy having a face centered cubic (FCC)-based single phase.
- FCC face centered cubic
- Co, Ni, and Si in Chemical Formula 2 have a ratio of 1:1:x.
- the entropy alloy according to an embodiment of the present invention is represented by the following Chemical Formula 3 and may include an alloy having a face centered cubic (FCC)-based single phase.
- FCC face centered cubic
- V, Co, Ni, and Si in Chemical Formula 3 have a ratio of 1:1:1:x.
- the above-described mesoentropy alloy material has excellent castability and machinability, and the stiffness (strength) and toughness of the coating material (or crown) can be improved through the multi-component functional alloy element. Accordingly, the Oldham ring to which the medium entropy alloy material is applied can dramatically prevent wear of the key portion and the key groove portion.
- a mixed powder was prepared by mixing the alloy matrix element and Si powder at the same atomic ratio% in the ratio shown in the table below. Each pure element was prepared in the form of pellets of 10 mm or less with a purity of 99.5% or more.
- the molten alloy was made into an ingot in a zirconia crucible. During the solidification process, the pressure was maintained at 2.5 bar. After manufacturing the ingot, the homogenization process was carried out at 1100 ° C. for 6 hours in an inert gas Ar atmosphere.
- Example 1 (Si 0.15) 31.75 31.75 31.75 4.77
- Example 2 (Si 0.3) 30.30 30.30 30.30 9.09
- Example 3 (Si 0.35) 29.85 29.85 29.85 10.45
- Example 4 (Si 0.4) 29.41 29.41 29.41 11.76
- Example 5 (Si 0.45) 28.98 28.98 28.98 13.04
- An Oldham ring in which a coating layer was formed on the front surface of the key portion was manufactured using the above-mentioned 12 medium entropy alloys through a sputtering method.
- the crown shown in FIG. 4 was manufactured using 12 of the above-described mesoentropy alloys, and an Oldham ring attached to the key was manufactured.
- Example 2 the physical properties of Example 2 and the control group were compared and measured as follows.
- the mesoentropy alloy given Example 3 has a high modulus of elasticity and relatively low maximum tensile strength and yield strength, so that toughness is improved while maintaining sufficient rigidity.
- the Oldham ring in which the middle entropy alloy material is applied to the key portion can greatly improve wear resistance.
- the mesoentropy alloy according to the present invention has higher strength due to Si doping compared to conventional alloys.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Rotary Pumps (AREA)
- Physical Vapour Deposition (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to an Oldham ring for a scroll compressor. More particularly, the Oldham ring for a scroll compressor, according to the present invention, is characterized in that a medium-entropy alloy material is located on at least a portion of the surface of a key part formed on a ring-shaped body part, thereby having the advantageous effect that anti-wear performance is greatly improved.
Description
본 발명은 신규의 중엔트로피 합금 소재가 적용된 스크롤 압축기용 올담링에 관한 것이다.The present invention relates to an Oldham ring for a scroll compressor to which a novel mesoentropy alloy material is applied.
압축기는 고압의 생성 또는, 고압 유체의 수송 등에 사용되는 기계이며, 냉장고나 에어컨 등의 냉동사이클에 적용되는 압축기의 경우 냉매가스를 압축시켜 응축기로 전송하는 역할을 수행한다.A compressor is a machine used for generating high pressure or transporting high pressure fluid, and in the case of a compressor applied to a refrigeration cycle such as a refrigerator or an air conditioner, it compresses refrigerant gas and transfers it to a condenser.
이러한 압축기 중 스크롤 압축기는 밀폐케이스 내부 공간에 고정스크롤이 고정됨과 더불어 이 고정스크롤에 선회스크롤이 맞물려 선회운동을 하도록 구성된다. 다시 말해, 상기 선회스크롤은 상기 고정스크롤을 기준으로 공전하도록 동작되면서 고정스크롤의 고정랩과 선회스크롤의 선회랩 사이에 연속적으로 생성되는 압축실을 통해 냉매가스가 흡입과 점차적인 압축 및 토출이 연속적이면서도 반복적으로 수행되는 것이다.Among these compressors, the scroll compressor is configured such that a fixed scroll is fixed to the inner space of the airtight case and the orbiting scroll is engaged with the fixed scroll to perform a pivoting motion. In other words, while the orbiting scroll is operated to revolve around the fixed scroll, the refrigerant gas is continuously sucked, compressed, and discharged through the compression chamber continuously created between the fixed wrap of the fixed scroll and the orbiting wrap of the orbiting scroll. However, it is performed repeatedly.
이러한 선회스크롤의 공전은 구동부의 구동에 의한 회전샤프트의 회전력을 제공받아 수행되며, 이때 상기 회전샤프트와 선회스크롤 간의 연결 부위는 상기 회전샤프트와 고정스크롤 간의 연결 부위에 대하여 편심지게 형성되도록 이루어진다. The revolution of the orbiting scroll is performed by receiving the rotational force of the rotational shaft driven by the driving unit, and at this time, the connection between the rotational shaft and the orbiting scroll is formed eccentrically with respect to the connection between the rotational shaft and the fixed scroll.
또한, 상기 크랭크샤프트의 회전으로 선회스크롤이 고정스크롤로부터 선회될 때에는 상기 선회스크롤의 자전이 방지되어야 한다. 이를 위해, 상기 선회스크롤과 이에 대향되게 위치되는 압축기의 메인프레임 사이에는 올담링이 제공되면서 상기 선회스크롤의 자전을 방지하게 된다.In addition, when the orbiting scroll is turned from the fixed scroll by the rotation of the crankshaft, rotation of the orbiting scroll should be prevented. To this end, an Oldham ring is provided between the orbiting scroll and the main frame of the compressor located opposite to the orbiting scroll to prevent rotation of the orbiting scroll.
상기 올담링은 선회스크롤과 메인프레임 간의 대향면에 사이에 서로 다른 방향을 향해 수평 이동 가능하게 각각 설치됨으로써 상기 선회스크롤의 자전을 방지한다. 이때, 상기 올담링의 상면 양측(예컨대, 좌우측)에는 상부에 위치한 키가 돌출 형성되면서 그에 대향되는 메인프레임의 저면 양측에 형성된 각각 키홈 내로 수용되어 해당 키홈 내에서 좌우 방향으로 수평 이동되도록 구성되고, 상기 올담링의 저면 양측(예컨대, 전후측)에는 하부에 위치한 키가 돌출 형성되면서 그에 대향되는 선회스크롤의 상면 양측(전후측)에 형성된 키홈 내로 각각 수용되어 해당 키홈 내에서 전후 방향으로 수평 이동되도록 구성된다.The Oldham rings are installed on opposite surfaces between the orbiting scroll and the main frame to be horizontally movable in different directions, thereby preventing the orbiting scroll from rotating. At this time, keys located at the top protrude from both sides of the upper surface of the Oldham ring (e.g., left and right sides) and are accommodated in key grooves formed on both sides of the bottom surface of the main frame opposite thereto, so that they are horizontally moved in the left and right directions within the corresponding key grooves, Keys located at the bottom protrude from both sides of the bottom surface of the Oldham ring (eg, the front and rear sides), and are accommodated in key grooves formed on both sides (front and rear sides) of the upper surface of the orbiting scroll opposite to the keys, so that they are horizontally moved in the forward and backward directions within the corresponding key grooves. It consists of
그러나, 전술된 올담링의 각 키는 그에 상대되는 키홈을 따라 수평(좌우 또는, 전후) 이동되는 도중 상기 선회스크롤의 키홈과의 마찰부위에 마모가 발생되었던 문제점이 있었다. 마찬가지로, 올담링의 각 키뿐만 아니라 선회스크롤의 키홈 역시 마모가 되는 문제점이 있었다.However, while each key of the above-described Oldham ring is moved horizontally (left and right or forward and backward) along the corresponding keyway, there is a problem in that abrasion occurs on the frictional portion with the keyway of the orbiting scroll. Similarly, not only each key of the Oldham ring but also the keyway of the orbiting scroll is worn out.
이러한 문제점을 해결하기 위해서, 종래에는 공개특허 제10-2000-0001772호에서와 같이 각 키의 표면에 질화알미늄층을 코팅하는 등 마모 저감을 위한 연구가 이루어졌다.In order to solve this problem, conventionally, as in Patent Publication No. 10-2000-0001772, studies have been made to reduce wear by coating an aluminum nitride layer on the surface of each key.
하지만, 이러한 연구에도 불구하고 부하가 높은 조건에서의 압축기 운전시 상기 올담링의 각 키에 많은 부하가 집중되면서 해당 키를 마모시키는 문제점이 있다.However, in spite of these studies, there is a problem in that a large load is concentrated on each key of the Oldham ring when the compressor is operated under a high load condition, causing the corresponding key to wear out.
본 발명은 상술한 문제점을 해결하기 위한 것으로, 본 발명의 목적은 스크롤 압축기에 적용되는 선회스크롤과 올담링의 마모를 방지하기 위한 신규의 올담링을 제공하는 것이다.The present invention is to solve the above problems, and an object of the present invention is to provide a novel Oldham ring for preventing abrasion of an orbiting scroll and an Oldham ring applied to a scroll compressor.
또한 본 발명의 목적은 스크롤 압축기용 올담링의 키 표면에 적용될 수 있는 신규의 소재를 제공하는 것이다.Another object of the present invention is to provide a novel material that can be applied to a key surface of an Oldham ring for a scroll compressor.
본 발명의 목적들은 이상에서 언급한 목적으로 제한되지 않으며, 언급되지 않은 본 발명의 다른 목적 및 장점들은 하기의 설명에 의해서 이해될 수 있고, 본 발명의 실시예에 의해 보다 분명하게 이해될 것이다. 또한, 본 발명의 목적 및 장점들은 특허 청구 범위에 나타낸 수단 및 그 조합에 의해 실현될 수 있음을 쉽게 알 수 있을 것이다.The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.
상술한 바와 같은 과제를 해결하기 위한 본 발명에 따른 스크롤 압축기용 올담링은 링 형태의 몸체부에 형성된 키 부 표면의 적어도 일부에 신규의 중엔트로피 합금 소재가 위치한 것을 구성상 특징으로 한다.The Oldham ring for a scroll compressor according to the present invention to solve the above problems is structurally characterized in that a novel mesoentropy alloy material is positioned on at least a part of the surface of the key part formed in the ring-shaped body part.
보다 구체적으로, 본 발명에 따른 올담링은 링 형태를 갖는 몸체부;, 상기 몸체부의 일측면에 돌출되도록 형성된 제1 키; 및 상기 몸체부의 타측면에 돌출되도록 형성된 제2 키;를 포함하고, 상기 제1 키 또는 제2 키 표면의 적어도 일부에 중엔트로피 합금 소재가 위치하며, 상기 중엔트로피 합금 소재는 다원계 합금 기지 및 Si를 포함하고, 상기 다원계 합금 기지는 Cr, Co, Ni 및 V 가운데 2종 이상을 포함하며, FCC(Face Centered Cubic)계 상을 갖는 합금을 포함한다.More specifically, the Oldham ring according to the present invention includes: a body portion having a ring shape; a first key protruding from one side of the body portion; and a second key formed to protrude from the other side surface of the body, wherein a central entropy alloy material is located on at least a portion of a surface of the first key or the second key, wherein the central entropy alloy material comprises a multi-component alloy base and It includes Si, and the multi-component alloy matrix includes two or more of Cr, Co, Ni, and V, and includes an alloy having a face centered cubic (FCC)-based phase.
본 발명의 올담링은 상온과 고온에서 기계적 특성이 향상된 신규의 중엔트로피 합금이 적용되어 마모 방지 성능이 우수하다.The Oldham ring of the present invention has excellent anti-wear performance by applying a novel mid-entropy alloy with improved mechanical properties at room temperature and high temperature.
상술한 효과와 더불어 본 발명의 구체적인 효과는 이하 발명을 실시하기 위한 구체적인 사항을 설명하면서 함께 기술한다.In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.
도 1은 스크롤 압축기의 내부를 나타낸 해부 단면도이다.1 is an anatomical cross-sectional view showing the inside of a scroll compressor.
도 2는 스크롤 압축기용 올담링을 도시한 사시도이다.2 is a perspective view illustrating an Oldham ring for a scroll compressor.
도 3 내지 4는 본 발명의 일시예에 따른 올담링의 키 부를 도시한 부분 사시도이다.3 to 4 are partial perspective views illustrating a key portion of an Oldham ring according to an embodiment of the present invention.
전술한 목적, 특징 및 장점은 첨부된 도면을 참조하여 상세하게 후술되며, 이에 따라 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명의 기술적 사상을 용이하게 실시할 수 있을 것이다. 본 발명을 설명함에 있어서 본 발명과 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 상세한 설명을 생략한다. 이하, 본 발명에 따른 바람직한 실시예를 상세히 설명하기로 한다. The above objects, features and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs will be able to easily implement the technical spirit of the present invention. In describing the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail.
명세서 전체에서, 특별히 반대되는 기재가 없는 한, 각 구성요소는 단수일 수도 있고 복수일 수도 있다. Throughout the specification, unless otherwise stated, each element may be singular or plural.
본 명세서에서 사용되는 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한, 복수의 표현을 포함한다. 본 출원에서, "구성된다" 또는 "포함한다" 등의 용어는 명세서 상에 기재된 여러 구성 요소들, 또는 여러 단계들을 반드시 모두 포함하는 것으로 해석되지 않아야 하며, 그 중 일부 구성 요소들 또는 일부 단계들은 포함되지 않을 수도 있고, 또는 추가적인 구성 요소 또는 단계들을 더 포함할 수 있는 것으로 해석되어야 한다. Singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some of the steps It should be construed that it may not be included, or may further include additional components or steps.
이하에서는, 본 발명에 따른 스크롤 압축기용 올담링에 대해 설명하도록 한다.Hereinafter, an Oldham ring for a scroll compressor according to the present invention will be described.
스크롤 압축기용 올담링Oldham Rings for Scroll Compressors
도 1을 참조하면, 올담링(10)이 적용된 스크롤 압축기(100)의 내부가 도시되어 있다.Referring to FIG. 1 , the inside of the scroll compressor 100 to which the Oldham ring 10 is applied is shown.
상술한 것처럼, 상기 올담링(10)은 선회스크롤과 메인프레임 간의 대향면에 사이에 서로 다른 방향을 향해 수평 이동 가능하게 각각 설치됨으로써 상기 선회스크롤의 자전을 방지한다. 이때, 상기 올담링(10)의 상면 양측(예컨대, 좌우측)에는 상부에 위치한 키가 돌출 형성되면서 그에 대향되는 메인프레임의 저면 양측에 형성된 각각 키홈 내로 수용되어 해당 키홈 내에서 좌우 방향으로 수평 이동되도록 구성되고, 상기 올담링(10)의 저면 양측(예컨대, 전후측)에는 하부에 위치한 키가 돌출 형성되면서 그에 대향되는 선회스크롤의 상면 양측(전후측)에 형성된 키홈 내로 각각 수용되어 해당 키홈 내에서 전후 방향으로 수평 이동되도록 구성된다.As described above, the Oldham rings 10 are installed on opposite surfaces between the orbiting scroll and the main frame to be horizontally movable in different directions, thereby preventing the orbiting scroll from rotating. At this time, keys positioned at the top protrude from both sides of the upper surface of the Oldham ring 10 (e.g., left and right sides) and are accommodated in key grooves formed on both sides of the bottom surface of the main frame that are opposite to the keys, so that they are horizontally moved in the left and right directions within the corresponding key grooves. While keys located at the lower part protrude from both sides of the bottom surface of the Oldham ring 10 (eg, the front and back sides), they are accommodated in key grooves formed on both sides (front and rear sides) of the upper surface of the orbiting scroll opposite to the key grooves in the corresponding key grooves. It is configured to move horizontally in the forward and backward directions.
그러나, 전술된 올담링(10)의 각 키는 그에 상대되는 키홈을 따라 수평(좌우 또는, 전후) 이동되는 도중 상기 선회스크롤의 키홈과의 마찰부위에 마모가 발생되었던 문제점이 있었다. 마찬가지로, 올담링의 각 키뿐만 아니라 선회스크롤의 키홈 역시 마모가 되는 문제점이 있었다.However, while each key of the above-described Oldham ring 10 moves horizontally (left and right or forward and backward) along the corresponding keyway, there is a problem in that the rubbing portion with the keyway of the orbiting scroll is abraded. Similarly, there was a problem that not only each key of the Oldham ring but also the keyway of the orbiting scroll was worn out.
이에 본 발명은 상술한 마모 문제를 해결하기 위해서, 키 부의 표면에 신규의 중엔트로피 합금 소재를 적용하였다. Accordingly, the present invention applied a novel mesoentropy alloy material to the surface of the key part in order to solve the above-mentioned wear problem.
도 2를 참조하면, 본 발명의 올담링(10)은 링 형태를 갖는 몸체부;, 상기 몸체부의 일측면에 돌출되도록 형성된 제1 키(1); 및 상기 몸체부의 타측면에 돌출되도록 형성된 제2 키(2);를 포함하고, 상기 제1 키(1) 또는 제2 키(2) 표면의 적어도 일부에 중엔트로피 합금 소재가 위치하며, 상기 중엔트로피 합금 소재는 다원계 합금 기지 및 Si를 포함하고, 상기 다원계 합금 기지는 Cr, Co, Ni 및 V 가운데 2종 이상을 포함하며, FCC(Face Centered Cubic)계 상을 갖는 합금을 포함한다.Referring to FIG. 2 , the Oldham ring 10 of the present invention includes a body portion having a ring shape; a first key 1 formed to protrude from one side of the body portion; and a second key 2 formed to protrude from the other side of the body, wherein a medium entropy alloy material is located on at least a part of the surface of the first key 1 or the second key 2, and the middle The trophy alloy material includes a multi-component alloy matrix and Si, and the multi-component alloy matrix includes an alloy including at least two of Cr, Co, Ni, and V, and having a face centered cubic (FCC) phase.
여기서, 상기 올담링의 키 부 표면에 상기 중엔트로피 합금 소재를 적용하는 방식은 특별히 제한되지 않는다. 화학적 또는 물리적 증착 방식을 이용하여 중엔트로피 합금 소재를 상기 올담링의 키 부 표면에 코팅시킬 수 있다. 또는 중엔트로피 합금 소재를 임의의 형상으로 제조하고, 이를 상기 올담링의 키 부 표면에 부착시킬 수도 있다.Here, a method of applying the mesotropic alloy material to the surface of the key portion of the Oldham ring is not particularly limited. A medium entropy alloy material may be coated on the surface of the key portion of the Oldham ring using a chemical or physical vapor deposition method. Alternatively, a medium entropy alloy material may be manufactured in an arbitrary shape and attached to the surface of the key portion of the Oldham ring.
도 3을 참조하면, 본 발명의 올담링(10)은 키 부(3)의 표면에 중엔트로피 합금 소재를 이용한 코팅층(C1)을 포함할 수 있다. 또한 도 4를 참조하면, 상기 중엔트로피 합금 소재가 캡(cap) 또는 크라운(crown) 형상으로 가공되어 상기 키 부(3)의 표면에 위치할 수 있다.Referring to FIG. 3 , the Oldham ring 10 of the present invention may include a coating layer C1 using a mesoentropy alloy material on the surface of the key portion 3 . Referring to FIG. 4 , the mesoentropy alloy material may be processed into a cap or crown shape and positioned on the surface of the key part 3 .
바람직하게는, 본 발명의 일실시예에 따른 중엔트로피 합금 소재는 하기 화학식 1로 표시되며 FCC(Face Centered Cubic)계 단상을 갖는 합금을 포함할 수 있다.Preferably, the entropy alloy material according to an embodiment of the present invention is represented by the following Chemical Formula 1 and may include an alloy having a face centered cubic (FCC)-based single phase.
[화학식 1][Formula 1]
CrCoNiSix
CrCoNiSi x
(O<x≤0.4의 조건을 만족한다)(The condition of O<x≤0.4 is satisfied)
또한 바람직하게는 상기 x는 0.15≤x≤0.3의 조건을 만족할 수 있다.Also preferably, x may satisfy the condition of 0.15≤x≤0.3.
다시 말해, 상기 화학식 1의 Cr, Co, Ni 및 Si는 1:1:1:x의 비를 갖는다.In other words, Cr, Co, Ni, and Si in Chemical Formula 1 have a ratio of 1:1:1:x.
아울러 본 발명의 일실시예에 따른 중엔트로피 합금 소재는 하기 화학식 2로 표시되며 FCC(Face Centered Cubic)계 단상을 갖는 합금을 포함할 수 있다.In addition, the entropy alloy material according to an embodiment of the present invention is represented by the following Chemical Formula 2 and may include an alloy having a face centered cubic (FCC)-based single phase.
[화학식 2][Formula 2]
CoNiSix
CoNiSi x
(O<x≤0.25의 조건을 만족한다)(Satisfies the condition of O<x≤0.25)
다시 말해, 상기 화학식 2의 Co, Ni 및 Si는 1:1:x의 비를 갖는다.In other words, Co, Ni, and Si in Chemical Formula 2 have a ratio of 1:1:x.
또한 본 발명의 일실시예에 따른 중엔트로피 합금은 하기 화학식 3으로 표시되며 FCC(Face Centered Cubic)계 단상을 갖는 합금을 포함할 수 있다.In addition, the entropy alloy according to an embodiment of the present invention is represented by the following Chemical Formula 3 and may include an alloy having a face centered cubic (FCC)-based single phase.
[화학식 3][Formula 3]
VCoNiSix
VCoNiSi x
(O<x≤0.1의 조건을 만족한다)(It satisfies the condition of O<x≤0.1)
다시 말해, 상기 화학식 3의 V, Co, Ni 및 Si는 1:1:1:x의 비를 갖는다.In other words, V, Co, Ni, and Si in Chemical Formula 3 have a ratio of 1:1:1:x.
상술한 중엔트로피 합금 소재는 주조성과 절삭성이 우수하며 다성분계 기능성 합금원소를 통해 코팅재(또는 크라운)의 강성(강도), 인성을 향상시킬 수 있다. 이에 따라, 상기 중엔트로피 합금 소재가 적용된 올담링은 키 부와 키홈부의 마모를 비약적으로 방지할 수 있다.The above-described mesoentropy alloy material has excellent castability and machinability, and the stiffness (strength) and toughness of the coating material (or crown) can be improved through the multi-component functional alloy element. Accordingly, the Oldham ring to which the medium entropy alloy material is applied can dramatically prevent wear of the key portion and the key groove portion.
이하에서는 본 발명의 바람직한 실시예를 통하여 본 발명을 더욱 구체적으로 설명한다.Hereinafter, the present invention will be described in more detail through preferred embodiments of the present invention.
<실시예><Example>
1. 실시예의 제조1. Preparation of Examples
(1) 중엔트로피 합금 소재의 제조(1) Manufacture of mesoentropy alloy materials
동일한 원자비%로 합금 기지 원소 및 Si 분말을 아래 표와 같은 비로 혼합하여 혼합 분말을 제조하였다. 각 순 원소는 99.5%이상의 순도를 가지는 10mm이하의 펠릿 형태로 준비되었다. A mixed powder was prepared by mixing the alloy matrix element and Si powder at the same atomic ratio% in the ratio shown in the table below. Each pure element was prepared in the form of pellets of 10 mm or less with a purity of 99.5% or more.
이를 도가니에 장입하고 1550℃로 가열하고 용해한 후, 용해된 합금은 지르코니아 도가니에서 잉곳으로 제조되었다. 응고되는 과정에서 압력은 2.5 bar 수준으로 유지되었다. 잉곳 제조 후, 균질화 과정은 모두 비활성 기체 Ar 분위기에서 1100℃ 6시간 진행되었다.After charging it into a crucible, heating it to 1550° C. and melting it, the molten alloy was made into an ingot in a zirconia crucible. During the solidification process, the pressure was maintained at 2.5 bar. After manufacturing the ingot, the homogenization process was carried out at 1100 ° C. for 6 hours in an inert gas Ar atmosphere.
| Cr(at%)Cr(at%) | Co(at%)Co(at%) | Ni(at%)Ni(at %) | Si(at%)Si(at%) | |
|
실시예 1 (Si 0.15)Example 1 (Si 0.15) |
31.7531.75 | 31.7531.75 | 31.7531.75 | 4.774.77 |
|
실시예 2 (Si 0.3)Example 2 (Si 0.3) |
30.3030.30 | 30.3030.30 | 30.3030.30 | 9.099.09 |
| 실시예 3(Si 0.35)Example 3 (Si 0.35) | 29.8529.85 | 29.8529.85 | 29.8529.85 | 10.4510.45 |
| 실시예 4(Si 0.4)Example 4 (Si 0.4) | 29.4129.41 | 29.4129.41 | 29.4129.41 | 11.7611.76 |
| 실시예 5(Si 0.45)Example 5 (Si 0.45) | 28.9828.98 | 28.9828.98 | 28.9828.98 | 13.0413.04 |
| Co(at%)Co(at%) | Ni(at%)Ni(at%) | Si(at%)Si(at%) | |
| 실시예 6Example 6 | 47.547.5 | 47.547.5 | 55 |
| 실시예 7Example 7 | 4545 | 4545 | 1010 |
| 실시예 8Example 8 | 42.542.5 | 42.542.5 | 1515 |
| 실시예 9Example 9 | 4040 | 4040 | 2020 |
| V(at%)V(at %) | Co(at%)Co(at %) | Ni(at%)Ni(at %) | Si(at%)Si(at%) | |
|
실시예 10 (Si 0.1)Example 10 (Si 0.1) |
32.2632.26 | 32.2632.26 | 32.2632.26 | 3.23.2 |
|
실시예 11 (Si 0.2)Example 11 (Si 0.2) |
31.2531.25 | 31.2531.25 | 31.2531.25 | 6.256.25 |
| 실시예 12(Si 0..3)Example 12 (Si 0..3) | 30.1330.13 | 30.1330.13 | 30.1330.13 | 9.69.6 |
(2) 올담링 제조(2) Manufacture of Oldham Ring
상술한 중엔트로피 합금 12개를 이용하여 스퍼터링 방식을 통해 키 부의 포면에 코팅층을 형성한 올담링을 제조하였다.An Oldham ring in which a coating layer was formed on the front surface of the key portion was manufactured using the above-mentioned 12 medium entropy alloys through a sputtering method.
아울러, 상술한 중엔트로피 합금 12개를 이용하여 도 4에 도시된 크라운을 제조하고 이를 키 부에 부착한 올담링을 제조하였다.In addition, the crown shown in FIG. 4 was manufactured using 12 of the above-described mesoentropy alloys, and an Oldham ring attached to the key was manufactured.
2. 시험 평가2. Test evaluation
상술한 중엔트로피 합금 가운데 실시예 2와 비교대조군의 물성을 아래와 같이 비교 측정하였다.Among the above-described mesoentropic alloys, the physical properties of Example 2 and the control group were compared and measured as follows.
| 탄성계수 (GPa)Modulus of elasticity (GPa) | 항복강도(MPa)Yield strength (MPa) | 파단강도(MPa)Breaking strength (MPa) | |
| SCM440SCM440 | 212.9212.9 | 650650 | 710710 |
| Al6061Al6061 | 66.766.7 | 267267 | 276276 |
| Al0.5CoCrCuFeNiAl 0.5 CoCrCuFeNi | 148.6148.6 | 540540 | 606.5606.5 |
|
실시예 3 CoCrNi-Si0.3%Example 3 CoCrNi-Si0.3% |
177.7177.7 | 315315 | 420420 |
실시예 3을 예시로 든 중엔트로피 합금은 탄성계수가 높고 최대 인장강도와 항복강도가 비교적 낮아, 충분한 강성을 유지하면서 인성이 좋아진 것을 확인할 수 있다.It can be seen that the mesoentropy alloy given Example 3 has a high modulus of elasticity and relatively low maximum tensile strength and yield strength, so that toughness is improved while maintaining sufficient rigidity.
따라서, 중엔트로피 합금 소재가 키 부에 적용된 올담링은 마모 방지 성능이 매우 개선될 수 있음을 알 수 있다.Accordingly, it can be seen that the Oldham ring in which the middle entropy alloy material is applied to the key portion can greatly improve wear resistance.
이처럼, 본 발명에 따른 중엔트로피 합금은 기존의 합금 대비 Si의 도핑으로 인해 더 높은 강도를 갖는 것을 알 수 있다.As such, it can be seen that the mesoentropy alloy according to the present invention has higher strength due to Si doping compared to conventional alloys.
이상과 같이 본 발명에 대해서 바람직한 실시예를 기초로 설명하였으나, 본 명세서에 개시된 실시예에 의해 본 발명이 한정되는 것은 아니며, 본 발명의 기술사상의 범위 내에서 통상의 기술자에 의해 다양한 변형이 이루어질 수 있음은 자명하다. 아울러 앞서 본 발명의 실시 예를 설명하면서 본 발명의 구성에 따른 작용 효과를 명시적으로 기재하여 설명하지 않았을 지라도, 해당 구성에 의해 예측 가능한 효과 또한 인정되어야 함은 당연하다.As described above, the present invention has been described based on preferred embodiments, but the present invention is not limited by the embodiments disclosed herein, and various modifications can be made by those skilled in the art within the scope of the technical idea of the present invention. It is self-evident that it can In addition, although the operational effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be recognized.
Claims (7)
- 링 형태를 갖는 몸체부;A body portion having a ring shape;상기 몸체부의 일측면에 돌출되도록 형성된 제1 키; 및a first key formed to protrude from one side of the body; and상기 몸체부의 타측면에 돌출되도록 형성된 제2 키;를 포함하고,A second key formed to protrude from the other side of the body; includes,상기 제1 키 또는 제2 키 표면의 적어도 일부에 중엔트로피 합금 소재가 위치하며,A mesoentropy alloy material is located on at least a part of the surface of the first key or the second key,상기 중엔트로피 합금 소재는The mesoentropy alloy material is다원계 합금 기지 및 Si를 포함하고, 상기 다원계 합금 기지는 Cr, Co, Ni 및 V 가운데 2종 이상을 포함하며, FCC(Face Centered Cubic)계 상을 갖는 합금을 포함하는Including a multi-component alloy matrix and Si, wherein the multi-component alloy matrix includes an alloy containing at least two of Cr, Co, Ni, and V, and having an FCC (Face Centered Cubic) phase스크롤 압축기용 올담링.Oldham ring for scroll compressors.
- 제 1항에 있어서,According to claim 1,상기 합금은The alloy하기 화학식 1로 표시되며It is represented by the following formula (1)FCC(Face Centered Cubic)계 단상을 갖는With FCC (Face Centered Cubic) phase스크롤 압축기용 올담링.Oldham ring for scroll compressors.[화학식 1][Formula 1]CrCoNiSix CrCoNiSi x(O<x≤0.4의 조건을 만족한다)(Satisfies the condition of O<x≤0.4)
- 제2항에 있어서,According to claim 2,상기 x는the x is0.15≤x≤0.3의 조건을 만족하는Satisfying the condition of 0.15≤x≤0.3스크롤 압축기용 올담링.Oldham ring for scroll compressors.
- 제 1항에 있어서,According to claim 1,상기 합금은The alloy하기 화학식 2로 표시되며It is represented by the following formula (2)FCC(Face Centered Cubic)계 단상을 갖는With FCC (Face Centered Cubic) phase스크롤 압축기용 올담링.Oldham ring for scroll compressors.[화학식 2][Formula 2]CoNiSix CoNiSi x(O<x≤0.25의 조건을 만족한다)(Satisfies the condition of O<x≤0.25)
- 제 1항에 있어서,According to claim 1,상기 합금은The alloy하기 화학식 3으로 표시되며It is represented by the following formula (3)FCC(Face Centered Cubic)계 단상을 갖는With FCC (Face Centered Cubic) phase스크롤 압축기용 올담링.Oldham ring for scroll compressors.[화학식 3][Formula 3]VCoNiSix VCoNiSi x(O<x≤0.1의 조건을 만족한다)(Satisfies the condition of O<x≤0.1)
- 제1항에 있어서,According to claim 1,상기 중엔트로피 합금 소재는The mesoentropy alloy material is스퍼터링 방식으로 상기 제1 키 또는 제2 키 표면의 적어도 일부에 증착되는Deposited on at least a portion of the surface of the first key or the second key by a sputtering method스크롤 압축기용 올담링.Oldham ring for scroll compressors.
- 제1항에 있어서,According to claim 1,상기 중엔트로피 합금 소재는The mesoentropy alloy material is캡(cap) 또는 크라운(crown) 형태로in the form of a cap or crown상기 제1 키 또는 제2 키 표면의 적어도 일부를 커버하는 covering at least a portion of the surface of the first key or the second key.스크롤 압축기용 올담링.Oldham ring for scroll compressors.
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| KR101910744B1 (en) * | 2017-07-26 | 2018-10-22 | 포항공과대학교 산학협력단 | Medium-entropy alloys with excellent cryogenic properties |
| KR20190107442A (en) * | 2018-03-12 | 2019-09-20 | 엘지전자 주식회사 | Motor operated compressor |
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| KR20160051400A (en) * | 2014-11-03 | 2016-05-11 | 엘지전자 주식회사 | Compressor |
| KR101910744B1 (en) * | 2017-07-26 | 2018-10-22 | 포항공과대학교 산학협력단 | Medium-entropy alloys with excellent cryogenic properties |
| KR20190107442A (en) * | 2018-03-12 | 2019-09-20 | 엘지전자 주식회사 | Motor operated compressor |
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| CHANG H.; ZHANG T.W.; MA S.G.; ZHAO D.; XIONG R.L.; WANG T.; LI Z.Q.; WANG Z.H.: "Novel Si-added CrCoNi medium entropy alloys achieving the breakthrough of strength-ductility trade-off", MATERIALS & DESIGN, ELSEVIER, AMSTERDAM, NL, vol. 197, 2 October 2020 (2020-10-02), AMSTERDAM, NL , XP086365745, ISSN: 0264-1275, DOI: 10.1016/j.matdes.2020.109202 * |
| YI HAILONG, BI MENGYUAN, YANG KANG, ZHANG BING: "Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure", MATERIALS, vol. 13, no. 21, pages 4909, XP093008815, DOI: 10.3390/ma13214909 * |
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