KR100206819B1 - A rolling piston structure of hermetic compressor - Google Patents
A rolling piston structure of hermetic compressor Download PDFInfo
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- KR100206819B1 KR100206819B1 KR1019960061240A KR19960061240A KR100206819B1 KR 100206819 B1 KR100206819 B1 KR 100206819B1 KR 1019960061240 A KR1019960061240 A KR 1019960061240A KR 19960061240 A KR19960061240 A KR 19960061240A KR 100206819 B1 KR100206819 B1 KR 100206819B1
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- rolling piston
- circumferential surface
- cylinder
- refrigerant
- hermetic compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/50—Bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
본 발명은 밀폐형 압축기의 롤링피스톤 구조에 관한 것으로, 종래에는 실린더에서 압축된 냉매가스가 토출포트와 토출공을 통하여 토출되는 과정에서 일부 냉매가스가 역류하여 실린더내부로 유입되어 압축효율을 저하시키는 문제점이 있었는 바, 본 발명은 상, 하부 베어링 사이에 설치되어 실린더의 내주면과 접촉되는 외주면과, 크랭트축의 편심부에 삽입되는 내주면을 가지는 밀폐형 압축기의 롤링피스톤 구조에 있어서, 상기 내주면 상측에 상기 상부베어링과 접촉함과 아울러 축삽입공을 한정하는 내측 플랜지부가 형성된 것으로서, 냉매를 압축함과 더불어 역류되는 냉매를 최소화함으로써 압축효율을 높여 압축기의 신뢰성을 향상시킬 수 있도록 한 것이다.The present invention relates to a rolling piston structure of a hermetic compressor. In the related art, some refrigerant gas flows back into the cylinder in the process of discharging the refrigerant gas compressed from the cylinder through the discharge port and the discharge hole, thereby lowering the compression efficiency. According to the present invention, in the rolling piston structure of a hermetic compressor having an outer circumferential surface disposed between upper and lower bearings and contacting the inner circumferential surface of the cylinder, and an inner circumferential surface inserted into an eccentric portion of the crankshaft, the upper portion is located above the inner circumferential surface. As the inner flange portion is formed in contact with the bearing and defines the shaft insertion hole, the refrigerant is compressed and the reflux flow is minimized to improve the reliability of the compressor by minimizing the backflow refrigerant.
Description
제1도는 일반적인 밀폐형 압축기를 도시한 종단면도.1 is a longitudinal sectional view of a typical hermetic compressor.
제2도는 제1도의 A-A' 단면도.2 is a cross-sectional view along the line A-A 'of FIG.
제3도는 제2도의 B-B' 단면도.3 is a cross-sectional view taken along line B-B 'in FIG.
제4도는 종래 냉매가스의 누설방지구조를 도시한 압축기의 압축기구부의 단면도.4 is a cross-sectional view of a compressor mechanism of a compressor showing a leak preventing structure of a conventional refrigerant gas.
제5도는 본 발명의 밀폐형 압축기의 롤링피스톤 구조가 결합된 압축기구부의 단면도.5 is a cross-sectional view of a compression mechanism coupled to the rolling piston structure of the hermetic compressor of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
4 : 크랭크축 4a : 편심부4: crankshaft 4a: eccentric part
8 : 실린더 9' : 롤링피스톤8: cylinder 9 ': rolling piston
9'a : 외주면 9'b : 내주면9'a: Inner circumference 9'b: Inner circumference
9'c : 축삽입공 9'd : 내측 플랜지부9'c: Shaft insertion hole 9'd: Inner flange
본 발명은 밀폐형 압축기의 롤링피스톤 구조에 관한 것으로, 특히 냉매의 압축을 원활히 함과 더불어 토출되는 냉매의 역류를 최소화할 수 있도록 한 밀폐형 압축기의 롤링피스톤 구조에 관한 것이다.The present invention relates to a rolling piston structure of a hermetic compressor, and more particularly to a rolling piston structure of a hermetic compressor to facilitate the compression of the refrigerant and to minimize the backflow of the discharged refrigerant.
일반적인 밀폐형 압축기는, 도1에 도시한 바와 같이, 압축기 외부를 둘러싸는 밀폐용기(1)가 있고, 이 밀폐용기(1)의 내부에는 고정자(2)와 회전자(3) 등으로 구성되는 전동기구부가 설치되어 있다. 그리고 상기 회전자(3)의 내경에 압입되며 하부에 편심부(4a)가 형성된 크랭크축(4)과 상기 크랭크축(4)의 편심부(4a)를 감싸며 상부베어링(5) 및 하부베어링(6)과 함께 볼트(7)에 의해 결합되어 있는 실린더(8)와 상기 크랭크축(4)의 편심부(4a)에 삽입되어 실린더(8)의 내경을 접하면서 자전 및 공전하는 롤링피스톤(9)과 상기 롤링피스톤(9)의 외주면에 압착되어 고압부와 저압부를 분리하며 직선운동하는 베인(10)을 포함하여 구성되는 압축기구부가 설치되어 있다.As shown in Fig. 1, a general hermetic compressor includes a hermetic container 1 surrounding the outside of the compressor, and an electric motor composed of a stator 2, a rotor 3, and the like inside the hermetic container 1. The mechanism part is provided. The upper bearing 5 and the lower bearing are enclosed by the crank shaft 4 and the eccentric portion 4a of the crank shaft 4, which are press-fitted into the inner diameter of the rotor 3 and have an eccentric portion 4a formed therein. 6 and a rolling piston 9 inserted into the cylinder 8 coupled by the bolt 7 and the eccentric portion 4a of the crankshaft 4 to rotate and rotate while contacting the inner diameter of the cylinder 8. ) And a compression mechanism including a vane 10 which is compressed to the outer circumferential surface of the rolling piston 9 and separates the high pressure portion and the low pressure portion and moves linearly.
그리고 베인(10)에 의해 고압부를 이루는 실린더(8)의 일측에 압축된 냉매가스를 토출할 수 있는 토출포트(8a)가 형성되어 있고 상기 상부베어링(5)의 일측에 상기 토출포트(8a)와 연통되게 토출공(5a)이 형성되어 있다.A discharge port 8a for discharging the compressed refrigerant gas is formed at one side of the cylinder 8 forming the high pressure part by the vane 10, and the discharge port 8a is provided at one side of the upper bearing 5. The discharge hole 5a is formed in communication with.
또한, 상기 실린더(8)의 저압부에는 냉매가스가 실린더(8)내부로 유입되는 흡입구(8b)가 형성되어 있고, 상기 흡입구(8b)는 밀폐용기(1)의 측부에 설치되는 어큐뮬레이터(11)와 냉매유입관(12)에 의해 연결되어 있다.In addition, an inlet port 8b through which refrigerant gas flows into the cylinder 8 is formed in the low pressure part of the cylinder 8, and the inlet port 8b is an accumulator 11 installed at the side of the sealed container 1. ) And a refrigerant inlet pipe (12).
미 설명 부호 13은 베인(10)을 탄성적으로 지지하는 탄성부재이고, 14는 밀폐용기(1)내부에서 압축된 냉매가스가 외부로 토출되는 토출관이며, 15는 소음기이다.Reference numeral 13 is an elastic member for elastically supporting the vane 10, 14 is a discharge tube through which the refrigerant gas compressed inside the sealed container 1 is discharged to the outside, and 15 is a silencer.
먼저, 전류가 인가되어 회전자(3)가 회전하게 되면 회전자(3)에 압입된 크랭크축(4)의 회전에 의해 롤링피스톤(9)이 실린더(8)의 내주면을 내접하면서 회전하게 되며 이로 인하여 실린더(8)내부에 고압부와 저압부가 형성되면서 냉매가 어큐뮬레이터(11)를 통해 실린더(8)내부로 유입되어 압축되고 압축된 냉매가스는 토출포트(8a)와 토출공(5a)을 통해 토출되며 토출된 냉매는 소음기(15)를 거쳐 토출관(14)을 통해 냉동사이클의 냉매관내로 토출된다.First, when a current is applied and the rotor 3 rotates, the rolling piston 9 rotates while in contact with the inner circumferential surface of the cylinder 8 by the rotation of the crankshaft 4 pressed into the rotor 3. As a result, the high pressure portion and the low pressure portion are formed inside the cylinder 8, and the refrigerant flows into the cylinder 8 through the accumulator 11, and the compressed and compressed refrigerant gas is discharged through the discharge port 8a and the discharge hole 5a. The discharged and discharged refrigerant is discharged into the refrigerant pipe of the refrigerating cycle through the discharge pipe 14 through the silencer 15.
한편, 실린더(8)내로 유입된 냉매가스가 롤링피스톤(9)의 회전에 의해 고압의 상태로 압축되어 실린더(8)의 상단에 형성된 토출포트(8a)와 상부베어링(5)에 형성된 토출공(5a)을 통해 토출되는 과정에서, 도3에 도시한 바와 같이, 냉매의 일부가 역류하여 상부베어링(5)과 롤링피스톤(9)의 틈새를 통해 롤링피스톤(9)의 내부 및 실린더(8)내로 누설되며 이로 인하여 압축효율을 저하시키게 된다. 이와 같은 냉매의 누설을 방지하기 위한 방법으로, 도4에 도시한 바와 같이, 토출공(5a)의 내주면과 롤링피스톤(9)의 내주면에 돌출되게 냉매누설방지부(16)를 형성하여 냉매의 누설을 방지하고 있으나 이는 부품을 제작하기 어려울 뿐만 아니라 냉매누설을 방지하기 위한 구조로 충분하지 못한 단점이 있다.On the other hand, the refrigerant gas introduced into the cylinder 8 is compressed to a high pressure by the rotation of the rolling piston 9, and the discharge hole formed in the discharge port 8a and the upper bearing 5 formed on the upper end of the cylinder 8; In the process of discharging through 5a, as shown in FIG. 3, a part of the refrigerant flows backward so that the inside of the rolling piston 9 and the cylinder 8 through the gap between the upper bearing 5 and the rolling piston 9. ), And the compression efficiency is lowered. As a method for preventing the leakage of the refrigerant, as shown in FIG. 4, the refrigerant leakage preventing portion 16 is formed to protrude on the inner circumferential surface of the discharge hole 5a and the inner circumferential surface of the rolling piston 9 This prevents leakage, but it is not only difficult to manufacture parts but also has a disadvantage that the structure for preventing refrigerant leakage is not sufficient.
따라서 본 발명의 목적은 냉매의 압축을 원활히 함과 더불어 토출되는 냉매의 역류를 최소화할 수 있도록 한 밀폐형 압축기의 롤링피스톤 구조를 제공함에 있다.Accordingly, an object of the present invention is to provide a rolling piston structure of a hermetic compressor to facilitate the compression of the refrigerant and to minimize the backflow of the discharged refrigerant.
상기한 바와 같은 본 발명의 목적을 달성하기 위하여 상, 하부 베어링 사이에 설치되어 실린더의 내주면과 접촉되는 외주면과, 크랭트축의 편심부에 삽입되는 내주면을 가지는 밀폐형 압축기의 롤링피스톤 구조에 있어서, 상기 내주면 상측에 상기 상부베어링과 접촉함과 아울러 축삽입공을 한정하는 내측 플랜지부가 형성된 것을 특징으로 하는 밀폐형 압축기의 롤링피스톤 구조가 제공된다.In order to achieve the object of the present invention as described above, in the rolling piston structure of a hermetic compressor having an outer circumferential surface provided between the upper and lower bearings and contacting the inner circumferential surface of the cylinder, and an inner circumferential surface inserted into an eccentric portion of the crankshaft. A rolling piston structure of a hermetic compressor is provided on an inner circumferential surface and in contact with the upper bearing and an inner flange portion defining an axial insertion hole.
이하, 본 발명의 밀폐형 압축기 롤링피스톤 구조를 첨부도면에 도시한 실시예에 따라 설명하면 다음과 같다.Hereinafter, the sealed compressor rolling piston structure of the present invention will be described according to the embodiment shown in the accompanying drawings.
도5는 본 발명에 의한 롤링피스톤을 보인 것으로, 상부베어링(5)과 하부베어링(6)도1참조) 사이에 설치되어 실린더(8)의 내주면과 접촉되는 외주면(9a')과, 크랭트축의 편심부(4a)에 삽입되는 내주면(9'b)을 가짐과 아울러 상기 내주면(9'b)의 상측에서 중심측으로 절곡되어 상기 상부베어링(5)과 접촉됨과 아울러 축삽입공(9'c)을 한정하는 내측 플랜지부(9'd)가 형성된다.5 shows a rolling piston according to the present invention, which is installed between the upper bearing 5 and the lower bearing 6 (see FIG. 1), and has an outer circumferential surface 9a 'contacting the inner circumferential surface of the cylinder 8 and a crank. It has an inner circumferential surface 9'b inserted into the eccentric portion 4a of the shaft and is bent from the upper side of the inner circumferential surface 9'b to the center side to be brought into contact with the upper bearing 5 and the shaft insertion hole 9'c. Inner flange portion 9'd defining a) is formed.
상기 축삽입공(9'c)은 크랭크축(4)이 삽입될 수 있는 직경으로 형성되며, 이 축삽입공(9'c)에 의해 내측에 단턱부(9'd)가 형성된다.The shaft insertion hole 9'c is formed to a diameter into which the crankshaft 4 can be inserted, and the stepped portion 9'd is formed inside by the shaft insertion hole 9'c.
이하 본 발명의 밀폐형 압축기의 롤링피스톤 구조의 작용효과를 설명하면 다음과 같다.Hereinafter, the operational effects of the rolling piston structure of the hermetic compressor of the present invention will be described.
본 발명의 밀폐형 압축기 롤링피스톤은 축삽입공(9'c)이 크랭크축(4)에 삽입되고 내주면(9'b)이 크랭크축(4)의 편심부(4a)에 삽입되어 실린더(8) 내부에 삽입되며, 이때 롤링피스톤(9)의 내측 플랜지부(9'd)의 상면은 상부베어링(5)의 하면에 접촉된다.In the hermetic compressor rolling piston of the present invention, the shaft insertion hole 9'c is inserted into the crankshaft 4, and the inner circumferential surface 9'b is inserted into the eccentric portion 4a of the crankshaft 4 so that the cylinder 8 The upper surface of the inner flange portion 9'd of the rolling piston 9 is in contact with the lower surface of the upper bearing 5.
상기 본 발명의 롤링피스톤(9)은 크랭크축(4)의 회전과 함께 편심부(4a)가 편심원운동함에 따라 실린더(8)의 내경을 접촉하면서 편심원운동하게 되며, 이로 인하여 고압부와 저압부가 형성되어 냉매가스가 실린더(8)내부로 유입되고 압축되어 토출포트(8a)와 토출공(5a)을 통해 토출된다. 한편, 토출포트(8a)와 토출공(5a)을 통하여 토출되는 냉매가스의 일부가 역류되는 것은 롤링피스톤(9)의 내측 플랜지부(9'd)와 상부베어링(5)의 접촉에 의해 방지된다. 상기 내측 플랜지부(9'd)는 충분한 면을 형성하고 있어 냉매의 누설을 충분히 방지하게 된다.The rolling piston 9 of the present invention is eccentric circular motion while contacting the inner diameter of the cylinder (8) as the eccentric portion (4a) with the rotation of the crank shaft (4), thereby high pressure and low pressure An addition is formed so that the refrigerant gas flows into the cylinder 8 and is compressed to be discharged through the discharge port 8a and the discharge hole 5a. On the other hand, the back flow of the refrigerant gas discharged through the discharge port 8a and the discharge hole 5a is prevented by the contact between the inner flange portion 9'd of the rolling piston 9 and the upper bearing 5. do. The inner flange portion 9'd forms a sufficient surface to sufficiently prevent leakage of the refrigerant.
또한 본 발명의 롤링피스톤(9)은 냉매가 토출되는 토출공(5a)이 하부베어링(6)에 형성된 경우에도 사용할 수 있으며, 이는 롤링피스톤(9)을 반대로 크랭크축(4)에 삽입함에 의해 이루어진다.In addition, the rolling piston 9 of the present invention can also be used when the discharge hole 5a through which the refrigerant is discharged is formed in the lower bearing 6, which is inserted by inserting the rolling piston 9 into the crank shaft 4 on the contrary. Is done.
또한 상부베어링(5)에 형성된 토출공(5a)의 내주면과 토출포트(8a)의 내면에 냉매누설방지부(16)를 형성하지 않게 됨으로 상부베어링(5)의 설계 및 제작이 수월하게 된다.In addition, since the refrigerant leakage preventing portion 16 is not formed on the inner circumferential surface of the discharge hole 5a formed in the upper bearing 5 and the inner surface of the discharge port 8a, the design and manufacture of the upper bearing 5 are facilitated.
이상에서 설명한 바와 같이 본 발명에 의한 밀폐형 압축기의 롤링피스톤(9)은 냉매를 압축함과 더불어 역류되는 냉매를 방지함으로써 압축효율을 높여 압축기의 신뢰성을 향상시킬 수 있는 효과가 있다.As described above, the rolling piston 9 of the hermetic compressor according to the present invention has the effect of improving the reliability of the compressor by increasing the compression efficiency by preventing the refrigerant from flowing back while compressing the refrigerant.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960061240A KR100206819B1 (en) | 1996-12-03 | 1996-12-03 | A rolling piston structure of hermetic compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960061240A KR100206819B1 (en) | 1996-12-03 | 1996-12-03 | A rolling piston structure of hermetic compressor |
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| Publication Number | Publication Date |
|---|---|
| KR19980043394A KR19980043394A (en) | 1998-09-05 |
| KR100206819B1 true KR100206819B1 (en) | 1999-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960061240A KR100206819B1 (en) | 1996-12-03 | 1996-12-03 | A rolling piston structure of hermetic compressor |
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| Country | Link |
|---|---|
| KR (1) | KR100206819B1 (en) |
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- 1996-12-03 KR KR1019960061240A patent/KR100206819B1/en not_active IP Right Cessation
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| KR19980043394A (en) | 1998-09-05 |
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