KR101161441B1 - Structure for reducing noise of twin rotary compressor - Google Patents

Structure for reducing noise of twin rotary compressor Download PDF

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KR101161441B1
KR101161441B1 KR1020050008208A KR20050008208A KR101161441B1 KR 101161441 B1 KR101161441 B1 KR 101161441B1 KR 1020050008208 A KR1020050008208 A KR 1020050008208A KR 20050008208 A KR20050008208 A KR 20050008208A KR 101161441 B1 KR101161441 B1 KR 101161441B1
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noise
space
cylinder
compressor
rotary compressor
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KR1020050008208A
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Korean (ko)
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KR20060087258A (en
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한정민
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엘지전자 주식회사
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0801—Separate fastening elements
    • E04F13/0832—Separate fastening elements without load-supporting elongated furring elements between wall and covering elements
    • E04F13/0833—Separate fastening elements without load-supporting elongated furring elements between wall and covering elements not adjustable
    • E04F13/0835—Separate fastening elements without load-supporting elongated furring elements between wall and covering elements not adjustable the fastening elements extending into the back side of the covering elements
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
    • F16B13/124—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting a threaded element, e.g. screw or bolt
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
    • F16B13/0875—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation with elastic discs or spring washers anchoring in the hole

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

본 발명은 복식 로터리 압축기의 소음 저감 구조에 관한 것으로, 케이싱의 내부에 장착하여 구동력을 발생시키는 전동기구부와, 전동기구부의 구동력을 전달받아 냉매를 번갈아 압축하도록 상기 케이싱의 내부에 설치하는 복수 개의 압축기구부를 포함하고, 상기 복수 개의 압축기구부 사이에 개재하여 양쪽 압축기구부의 내부공간을 구획하는 중간베어링에 상기 내부공간과 연통되는 소음유로와 소음공간을 형성함으로써, 양측 압축기구부를 이루는 각 부품들의 가공이 용이하여 압축기 전체에 대한 생산비용을 절감할 수 있을 뿐 아니라 두 소음공간을 연통시킬 경우 각 머플러의 유효공간을 넓혀 압축기 소음을 더욱 효과적으로 향상시킬 수 있다.The present invention relates to a noise reduction structure of a double rotary compressor, comprising: a power mechanism unit mounted inside the casing to generate a driving force, and a plurality of compression units installed inside the casing to alternately compress refrigerant by receiving a driving force of the power mechanism unit. Machining each part constituting the two compression mechanisms by forming a noise flow path and a noise space in communication with the internal space in the intermediate bearing partitioning the internal space between the two compression mechanisms between the plurality of compression mechanisms; This makes it possible to reduce the production cost of the whole compressor, and when the two noise spaces are communicated, the effective space of each muffler can be expanded to more effectively improve the compressor noise.

Description

복식 로터리 압축기의 소음 저감 구조{STRUCTURE FOR REDUCING NOISE OF TWIN ROTARY COMPRESSOR}Noise Reduction Structure of Double Rotary Compressor {STRUCTURE FOR REDUCING NOISE OF TWIN ROTARY COMPRESSOR}

도 1은 종래 복식 로터리 압축기의 일례를 보인 종단면도.1 is a longitudinal sectional view showing an example of a conventional double rotary compressor.

도 2는 본 발명 복식 로터리 압축기의 일례를 보인 종단면도,Figure 2 is a longitudinal sectional view showing an example of the present invention double rotary compressor,

도 3은 본 발명 복식 로터리 압축기에서 중간베어링을 파단하여 보인 사시도.Figure 3 is a perspective view showing the middle bearing broken in the double rotary compressor of the present invention.

** 도면의 주요 부분에 대한 부호의 설명 **DESCRIPTION OF REFERENCE NUMERALS

1 : 케이싱 2 : 전동기구부1: casing 2: electric mechanism part

3 : 회전축 10,20 : 제1,제2 압축기구부3: rotating shaft 10,20: first and second compression mechanism

30 : 중간베어링 31,32 : 제1,제2 가스유로30: intermediate bearing 31,32: first and second gas flow path

33 : 가스공간33: gas space

본 발명은 복식 로터리 압축기에 관한 것으로, 특히 가공이 용이하고 소음기의 성능을 높일 수 있는 복식 로터리 압축기의 소음 저감 구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double rotary compressor, and more particularly, to a noise reduction structure of a double rotary compressor that is easy to process and can improve the performance of a silencer.

일반적으로 압축기는 기계적 에너지를 압축성 유체의 압축에너지로 변환시키 는 것으로, 통상 왕복동식 및 스크롤식 및 원심식 그리고 베인식으로 구분할 수 있다. 로터리 압축기는 주로 에어콘과 같은 공기조화기에 적용하는 것으로, 최근 들어 에어콘의 기능이 다양해지는 추세에 부응하여 로터리 압축기도 용량을 가변할 수 있는 복식 로터리 압축기가 널리 소개되고 있다. In general, a compressor converts mechanical energy into compressive energy of a compressive fluid, and is generally classified into reciprocating type, scroll type, centrifugal type, and vane type. Rotary compressors are mainly applied to air conditioners such as air conditioners. Recently, in response to the trend of varying functions of air conditioners, double rotary compressors that can vary in capacity have been widely introduced.

도 1은 종래 복식 로터리 압축기의 일례를 보인 종단면도이다.1 is a longitudinal sectional view showing an example of a conventional double rotary compressor.

이에 도시한 바와 같이 종래의 복식 로터리 압축기는, 복수 개의 냉매흡입관(SP1)(SP2)과 한 개의 냉매토출관(DP)을 연통 설치하는 케이싱(1)과, 케이싱(1)의 상측에 설치하여 회전력을 발생하도록 고정자(2a)와 회전자(2b)로 된 전동기구부(2)와, 케이싱(1)의 하측에 상하로 설치하여 상기 전동기구부(2)에서 발생하는 회전력을 회전축(3)에 의해 전달받아 냉매를 각각 압축하는 제1 압축기구부(10) 및 제2 압축기구부(20)로 구성하고 있다.As shown in the drawing, a conventional double rotary compressor includes a casing 1 for communicating a plurality of refrigerant suction pipes SP1 and SP2 and one refrigerant discharge pipe DP, and an upper side of the casing 1. In order to generate the rotational force, the rotational force generated by the transmission mechanism 2 is installed up and down at the lower side of the casing 1 and the transmission mechanism 2 made of the stator 2a and the rotor 2b. The first compressor mechanism 10 and the second compressor mechanism 20 for compressing the refrigerant, respectively.

제1 압축기구부(10)는 환형으로 형성하여 케이싱(1)의 내부에 설치하는 제1 실린더(11)와, 제1 실린더(11)의 상하 양측을 복개하여 함께 제1 내부공간(V1)을 이루면서 상기한 회전축을 반경방향으로 지지하는 상부베어링(12) 및 중간베어링(13)과, 회전축(3)의 상측 편심부에 회전 가능하게 결합하여 제1 실린더(11)의 제1 내부공간(V1)에서 선회하면서 냉매를 압축하는 제1 롤링피스톤(14)과, 제1 롤링피스톤(14)의 외주면에 압접하도록 제1 실린더(11)에 반경방향으로 이동 가능하게 결합하여 상기 제1 실린더(11)의 제1 내부공간(V1)을 제1 흡입실과 제1 압축실로 각각 구획하는 제1 베인(미도시)과, 상부베어링(12)의 중앙부근에 구비한 제1 토출포트(12a) 선단에 개폐 가능하게 결합하여 제1 압축실에서 토출되는 냉매가스의 토출 을 조절하는 제1 토출밸브(15)와, 제1 토출밸브(15)를 수용하여 상기 상부베어링에 설치하는 상부머플러(16)를 포함하고 있다.The first compression mechanism 10 is formed in an annular shape to cover the first cylinder 11 installed inside the casing 1 and both the upper and lower sides of the first cylinder 11 to form the first internal space V1. The first inner space (V1) of the first cylinder 11 is rotatably coupled to the upper bearing 12 and the intermediate bearing 13 to support the rotating shaft in the radial direction, and the upper eccentric portion of the rotating shaft (3) The first rolling piston (14) for compressing the refrigerant while turning in a) and the first cylinder (11) by radially movably coupled to the first cylinder (11) to press-contact with the outer peripheral surface of the first rolling piston (14) A first vane (not shown) for dividing the first internal space V1 into a first suction chamber and a first compression chamber, respectively, and a tip of the first discharge port 12a provided near the center of the upper bearing 12. A first discharge valve 15 and a first discharge valve which are coupled to open and close to control the discharge of the refrigerant gas discharged from the first compression chamber; It includes an upper muffler (16) for accommodating the groove (15) and installed in the upper bearing.

여기서, 제1 실린더(11)는 환형으로 형성하여 그 내주면 일측, 즉 상기한 베인이 반경방향으로 결합하는 베인슬릿(미도시)의 일측에는 압축가스의 토출을 안내하는 제1 토출안내홈(11a)을 형성하고, 제1 토출안내홈(11a)의 일측에는 상기 상부베어링(12)의 저면에 구비하는 제1 소음유로(12b)와 연통하도록 하여 소정의 깊이로 함몰지는 제1 소음공간(11b)을 형성하고 있다.Here, the first cylinder 11 is formed in an annular shape, one side of the inner circumferential surface, that is, the first discharge guide groove 11a for guiding the discharge of the compressed gas to one side of the vanes slit (not shown) to which the vanes are radially coupled. A first noise space (11b) formed in one side of the first discharge guide groove (11a) to communicate with the first noise passage (12b) provided on the bottom surface of the upper bearing (12) to be recessed to a predetermined depth. ).

제2 압축기구부(20)는 도 1 내지 도 3에서와 같이 환형으로 형성하여 케이싱(1) 내부의 제1 실린더(11) 하측에 설치하는 제2 실린더(21)와, 제2 실린더(21)의 상하 양측을 복개하여 함께 제2 내부공간(V1)을 이루면서 상기한 회전축(3)을 반경방향 및 축방향으로 지지하는 중간베어링(13) 및 하부베어링(22)과, 회전축(3)의 하측 편심부에 회전 가능하게 결합하여 제2 실린더(21)의 제2 내부공간(V2)에서 선회하면서 냉매를 압축하는 제2 롤링피스톤(23)과, 제2 롤링피스톤(23)의 외주면에 압접하도록 제2 실린더(21)에 반경방향으로 이동 가능하게 결합하여 상기 제2 실린더(21)의 제2 내부공간(V2)을 제2 흡입실과 제2 압축실로 각각 구획하는 제2 베인(미도시)과, 하부베어링(22)의 중앙부근에 구비한 제2 토출포트(22a) 선단에 개폐 가능하게 결합하여 제2 압축실에서 토출되는 냉매가스의 토출을 조절하는 제2 토출밸브(24)와, 제2 토출밸브(24)를 수용하여 상기 하부베어링(22)에 설치하는 하부머플러(25)를 포함하고 있다.The second compression mechanism 20 is formed in an annular shape as shown in Figs. 1 to 3 and installed on the lower side of the first cylinder 11 inside the casing 1 and the second cylinder 21. The upper and lower sides of the intermediate bearing 13 and the lower bearing 22 and the lower side of the rotating shaft 3 supporting the rotating shaft 3 in the radial and axial directions while forming a second inner space V1 together. The second rolling piston 23, which is rotatably coupled to the eccentric part and rotates in the second inner space V2 of the second cylinder 21, compresses the refrigerant, and is pressed against the outer circumferential surface of the second rolling piston 23. A second vane (not shown) coupled to the second cylinder 21 to be movable in a radial direction to partition the second inner space V2 of the second cylinder 21 into a second suction chamber and a second compression chamber, respectively; Is coupled to the tip of the second discharge port 22a provided near the center of the lower bearing 22 so as to be openable and discharged from the second compression chamber. And a second discharge valve 24, a second discharge the lower muffler (25) for installation to accommodate the valve 24 in the lower bearing (22) for controlling the ejection of each gas.

여기서, 제2 실린더(21)는 환형으로 형성하여 그 내주면 일측에는 압축가스 의 토출을 안내하는 제2 토출안내홈(21a)을 형성하고, 제2 토출안내홈(21a)의 바깥쪽에는 상기 하부베어링(22)의 상면에 구비하는 제2 소음유로(22b)와 연통하도록 하여 소정의 깊이로 함몰지도록 제2 소음공간(21b)을 형성하고 있다.Here, the second cylinder 21 is formed in an annular shape to form a second discharge guide groove (21a) for guiding the discharge of the compressed gas on one side of the inner peripheral surface, the lower portion on the outer side of the second discharge guide groove (21a) The second noise space 21b is formed to communicate with the second noise passage 22b provided on the upper surface of the bearing 22 and to be recessed to a predetermined depth.

도면중 미설명 부호인 A는 어큐뮬레이터이다.In the drawings, reference numeral A denotes an accumulator.

상기와 같은 종래 복식 로터리 압축기는 다음과 같이 동작한다.The conventional double rotary compressor as described above operates as follows.

즉, 전동기구부(2)의 고정자(2a)에 전원을 인가하여 회전자(2b)가 회전하면, 회전축(3)이 회전자(2b)와 함께 회전하면서 전동기구부(2)의 회전력을 제1 압축기구부(10)와 제2 압축기구부(20)에 전달함으로써 각 압축기구부가 냉매를 번갈아 흡입 압축하여 토출한다.That is, when the rotor 2b is rotated by applying power to the stator 2a of the power transmission mechanism 2, the rotating shaft 3 rotates together with the rotor 2b, and the rotational force of the power transmission mechanism 2 is firstly increased. By transferring to the compression mechanism section 10 and the second compression mechanism section 20, each compression mechanism section alternately suction-compresses and discharges the refrigerant.

이때, 각 압축기구부(10)(20)에서 냉매가 토출될 때 압력 맥동에 의한 소음이 발생하게 되나, 이 소음은 각 토출포트(12a)(22a)에 연통하는 소음유로(12b)(22b)를 통해 각각의 소음공간(11b)(21b)으로 유입되어 일정 정도만큼 감쇄되는 것이었다.At this time, noise is generated by pressure pulsation when the refrigerant is discharged from each of the compression mechanism units 10 and 20, but the noise is in the noise passages 12b and 22b in communication with each of the discharge ports 12a and 22a. Through each of the noise space (11b) (21b) was to be attenuated by a certain degree.

그러나, 상기와 같은 종래의 복식 로터리 압축기에 있어서는, 상부베어링(12)과 하부베어링(22)에 각각 소음유로(12b)(22b)를 형성하고 이에 연통하도록 제1 실린더(11)와 제2 실린더(21)에 소음공간(11b)(21b)을 형성함에 따라 가공이 복잡하게 되어 생산비용이 가중되는 문제점이 있었다.However, in the conventional double rotary compressor as described above, the first cylinder 11 and the second cylinder are formed so as to communicate with the noise passages 12b and 22b in the upper bearing 12 and the lower bearing 22, respectively. As the noise spaces 11b and 21b are formed in the 21, the processing becomes complicated and the production cost is increased.

본 발명은 상기와 같은 종래 복식 로터리 압축기가 가지는 문제점을 감안하여 안출한 것으로, 각 압축기구부에서 토출되는 냉매의 압력 맥동에 의한 소음을 제거하는 소음 구조를 간소화하여 생산비용을 절감할 수 있는 복식 로터리 압축기의 소음 저감 구조를 제공하려는데 본 발명이 목적이 있다.The present invention has been made in view of the problems of the conventional double rotary compressor as described above, a double rotary that can reduce the production cost by simplifying the noise structure to remove the noise caused by the pressure pulsation of the refrigerant discharged from each compression mechanism An object of the present invention is to provide a noise reduction structure of a compressor.

본 발명의 목적을 달성하기 위하여, 케이싱의 내부에 장착하여 구동력을 발생시키는 전동기구부와, 전동기구부의 구동력을 전달받아 냉매를 번갈아 압축하도록 상기 케이싱의 내부에 설치하는 복수 개의 압축기구부를 포함한 복식 로터리 압축기에 있어서, 두 압축기구부 사이에 개재하여 양쪽 내부공간을 구획하는 중간베어링의 상하 양면에 각각 소음유로와 소음공간을 형성하는 것을 특징으로 하는 복식 로터리 압축기의 소음 저감 구조를 제공한다.In order to achieve the object of the present invention, a double rotary including a power mechanism unit mounted inside the casing to generate a driving force, and a plurality of compressor mechanisms installed inside the casing to alternately compress the refrigerant by receiving the driving force of the power mechanism. In the compressor, there is provided a noise reduction structure of the double rotary compressor, characterized in that the noise flow path and the noise space are formed on each of the upper and lower sides of the intermediate bearing that partitions both internal spaces between the two compression mechanisms.

이하, 본 발명에 의한 복식 로터리 압축기의 소음 저감 구조를 첨부도면에 도시한 일실시예에 의거하여 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the noise reduction structure of the double rotary compressor by this invention is demonstrated in detail based on one Example shown in an accompanying drawing.

도 2는 본 발명 복식 로터리 압축기의 일례를 보인 종단면도이고, 도 3은 본 발명 복식 로터리 압축기에서 중간베어링을 파단하여 보인 사시도이다.Figure 2 is a longitudinal sectional view showing an example of the double rotary compressor of the present invention, Figure 3 is a perspective view showing the middle bearing broken in the double rotary compressor of the present invention.

이에 도시한 바와 같이 본 발명에 의한 복식 로터리 압축기는, 복수 개의 냉매흡입관(SP1)(SP2)과 한 개의 냉매토출관(DP)을 연통 설치하는 케이싱(1)과, 케이싱(1)의 상측에 설치하여 회전력을 발생하는 전동기구부(2)와, 케이싱(1)의 하측에 중간베어링(30)을 사이에 두고 상하로 설치하여 상기 전동기구부(2)에서 발생하는 회전력을 회전축(3)에 의해 전달받아 냉매를 각각 압축하도록 제1 실린더(11)를 가지는 제1 압축기구부(10) 및 제2 실린더(21)를 가지는 제2 압축기구부(20)를 포함한다. 상기 제1 실린더(11)에는 제1 내부공간(V1)이 형성되고, 제2 실린더(21)에는 제2 내부공간(V2)이 형성되며, 상기 제1 내부공간(V1)과 제2 내부공간(V2)은 상기 중간베어링(30)에 의해 서로 분리된다.As shown in the drawing, the double rotary compressor according to the present invention includes a casing 1 for communicating a plurality of refrigerant suction pipes SP1 and SP2 and one refrigerant discharge pipe DP and an upper side of the casing 1. Rotating force generated by the power transmission mechanism (2) and the upper and lower with the intermediate bearing 30 in the lower side of the casing (1) interposed therebetween by the rotation shaft (3) And a first compression mechanism unit 10 having a first cylinder 11 and a second compression mechanism unit 20 having a second cylinder 21 so as to compress the refrigerant. A first inner space V1 is formed in the first cylinder 11, a second inner space V2 is formed in the second cylinder 21, and the first inner space V1 and the second inner space are formed. (V2) is separated from each other by the intermediate bearing (30).

여기서, 중간베어링(30)은 환형으로 형성하여 그 상면에는 제1 압축기구부(10)의 제1 실린더(11)를 밀착 고정하는 반면 그 저면에는 제2 압축기구부(20)의 제2 실린더(21)를 밀착 고정하되, 회전축(3)을 삽입하는 내주면 상하 양측에는 압축가스의 토출시 발생하는 압력 맥동을 상쇄시킬 수 있도록 제1 내부공간(V1)에 연통되는 제1 소음유로(31)와 제2 내부공간(V2)에 연통되는 제2 소음유로(32)를 형성하고, 그 제1 소음유로(31)와 제2 소음유로(32)의 바깥쪽 끝단에는 두 소음유로(31)(32)를 연통시키도록 소음공간(33)을 형성한다.Here, the intermediate bearing 30 is formed in an annular shape and the upper surface of the intermediate bearing 30 tightly fixes the first cylinder 11 of the first compression mechanism 10, while the lower surface of the second cylinder 21 of the second compression mechanism 20 ) And the first noise passage 31 communicated with the first inner space (V1) so as to cancel the pressure pulsation generated during discharge of the compressed gas on the upper and lower sides of the inner circumferential surface into which the rotary shaft 3 is inserted. 2 form a second noise passage 32 communicating with the internal space V2, and at the outer ends of the first noise passage 31 and the second noise passage 32, two noise passages 31 and 32; The noise space 33 is formed to communicate with each other.

제1 소음유로(31)와 제2 소음유로(32)는 각 압축기구부(10)(20)의 상부베어링(12)과 하부베어링(22)에 구비하는 제1 토출포트(12a)와 제2 토출포트(22a)에 연통하는 위치에서 각각 반경방향 바깥쪽으로 형성하고, 소음공간(33)은 상기한 두 소음유로(31)(32)의 반경방향 끝단에서 축방향으로 연통하도록 형성한다. 또, 소음공간(33)의 내경은 소음유로(31)(32)의 폭 보다 크게 형성하는 것이 바람직하다. 또, 소음유로(31)(32)와 소음공간(33)을 한번에 형성하기 위하여는 상기한 중간베어링(30)을 소결 제작하는 것이 바람직하다.The first noise passage 31 and the second noise passage 32 are provided in the upper bearing 12 and the lower bearing 22 of each of the compression mechanism units 10 and 20, respectively. Each of them is formed radially outward at the position communicating with the discharge port 22a, and the noise space 33 is formed so as to communicate in the axial direction at the radial ends of the two noise passages 31 and 32 described above. In addition, it is preferable that the inner diameter of the noise space 33 is larger than the width of the noise passages 31 and 32. In addition, in order to form the noise passages 31 and 32 and the noise space 33 at one time, it is preferable to sinter the intermediate bearing 30 as described above.

한편, 소음공간(33)은 도 2 및 도 3에서와 같이 제1 압축기구부(10)와 제2 압축기구부(20)가 서로 연통하도록 형성할 수도 있으나, 서로 연통하지 않도록 각각의 소음유로(31)(32) 끝단에 소정의 깊이로 형성할 수도 있다.Meanwhile, the noise space 33 may be formed such that the first compression mechanism 10 and the second compression mechanism 20 communicate with each other, as shown in FIGS. 2 and 3, but each noise passage 31 does not communicate with each other. 32 may be formed at a predetermined depth.

도면중 종래와 동일한 부분에 대하여는 동일한 부호를 부여하였다.In the drawings, the same reference numerals are given to the same parts as in the prior art.

상기와 같은 본 발명 복식 로터리 압축기는 다음과 같은 작용 효과가 있다.Double rotary compressor of the present invention as described above has the following effects.

즉, 전동기구부(2)의 고정자(2a)에 전원을 인가하여 회전자(2b)가 회전하면, 회전축(3)이 회전자(2b)와 함께 회전하면서 전동기구부(2)의 회전력을 제1 압축기구부(10)와 제2 압축기구부(20)에 전달함으로써 냉매를 번갈아 흡입 압축하여 토출 한다.That is, when the rotor 2b is rotated by applying power to the stator 2a of the power transmission mechanism 2, the rotating shaft 3 rotates together with the rotor 2b, and the rotational force of the power transmission mechanism 2 is firstly increased. The refrigerant is alternately sucked and compressed by being delivered to the compression mechanism unit 10 and the second compression mechanism unit 20.

이때, 각 압축기구부(10)(20)에서 냉매가 토출될 때 압력 맥동에 의한 소음이 발생하게 되나, 이 소음은 각 토출포트(12a)(22a)에 연통하도록 중간베어링(30)에 구비하는 소음유로(31)(32)를 통해 소음공간(33)으로 유입되어 감쇄되는 것이다.At this time, the noise caused by the pressure pulsation occurs when the refrigerant is discharged from each of the compression mechanism (10) 20, this noise is provided in the intermediate bearing (30) to communicate with each discharge port (12a) (22a) It is introduced into the noise space 33 through the noise passages 31 and 32 to be attenuated.

이렇게 하여, 각 압축기구부에서의 압력 맥동에 의한 소음을 감쇄시키기 위한 소음유로와 소음공간을 상기한 중간베어링에 모두 형성함으로써 각 압축기구부를 용이하게 제작할 수 있어 생산비용을 절감할 수 있다.In this way, by forming both the noise flow path and the noise space for attenuating the noise caused by the pressure pulsation in each compression mechanism in the intermediate bearing, the respective compression mechanisms can be easily manufactured, thereby reducing the production cost.

또, 복식 로터리의 경우 180°의 위상차를 두고 토출을 하므로 한 쪽 압축기구부에서의 토출시 냉매의 일부가 상기한 중간베어링의 소음유로와 소음공간을 통해 다른 쪽 압축기구부로 이동함에 따라 상부머플러와 하부머플러의 유효공간이 넓어지고 이를 통해 압축기의 소음 효과가 더욱 향상된다.In addition, in the case of the double rotary, the discharge is performed with a phase difference of 180 °, so that a part of the refrigerant moves to the other compressor sphere through the noise passage and noise space of the intermediate bearing when discharged from one compressor sphere. The effective space of the lower muffler is widened, which further improves the noise effect of the compressor.

본 발명에 의한 복식 로터리 압축기의 소음 저감 구조는, 상하 양측 압축기구부를 구획하는 중간베어링에 소음유로와 소음공간을 모두 형성함으로써, 양측 압축기구부를 이루는 각 부품들의 가공이 용이하여 압축기 전체에 대한 생산비용을 절감할 수 있을 뿐 아니라 두 소음공간을 연통시킬 경우 각 머플러의 유효공간을 넓혀 압축기 소음을 더욱 효과적으로 향상시킬 수 있다.The noise reduction structure of the double rotary compressor according to the present invention, by forming both the noise flow path and the noise space in the intermediate bearing partitioning the upper and lower compressor spheres, it is easy to process the parts forming the two compressor spheres to produce the whole compressor Not only can the cost be reduced, but when the two noise spaces are connected, the effective space of each muffler can be enlarged to more effectively improve the compressor noise.

Claims (3)

제1 내부공간을 갖는 제1 실린더;A first cylinder having a first inner space; 제2 내부공간을 갖는 제2 실린더; A second cylinder having a second inner space; 상기 제1 실린더의 상측을 복개하고 상기 제1 내부공간에서 압축된 냉매를 토출하도록 제1 토출포트가 형성되는 상부베어링;An upper bearing having a first discharge port formed to cover the upper side of the first cylinder and discharge the compressed refrigerant in the first internal space; 상기 제2 실린더의 하측을 복개하고 상기 제2 내부공간에서 압축된 냉매를 토출하도록 제2 토출포트가 형성되는 하부베어링;A lower bearing having a second discharge port formed to cover the lower side of the second cylinder and discharge the compressed refrigerant in the second internal space; 상기 제1 실린더와 제2 실린더의 사이에 설치되어 상기 제1 내부공간과 제2 내부공간 사이를 분리하는 중간베어링;An intermediate bearing installed between the first cylinder and the second cylinder to separate between the first internal space and the second internal space; 상기 제1 내부공간에 연통되도록 상기 중간베어링의 일측면에 형성되는 제1 소음유로;A first noise passage formed on one side of the intermediate bearing to communicate with the first internal space; 상기 제2 내부공간에 연통되도록 상기 중간베어링의 타측면에 형성되는 제2 소음유로; 및A second noise passage formed on the other side of the intermediate bearing to communicate with the second internal space; And 상기 제1 소음유로와 제2 소음유로가 서로 연통되도록 상기 중간베어링에 축방향으로 관통 형성되는 소음공간;을 포함하는 복식 로터리 압축기의 소음 저감 구조.And a noise space axially penetrating the intermediate bearing such that the first noise passage and the second noise passage communicate with each other. 제1항에 있어서,The method of claim 1, 상기 제1 소음유로는 상기 제1 토출포트와 연통되는 위치에 형성되고, 상기 제2 소음유로는 상기 제2 토출포트와 연통되는 위치에 형성되는 복식 로터리 압축기의 소음 저감 구조.And the first noise passage is formed at a position in communication with the first discharge port, and the second noise passage is formed at a position in communication with the second discharge port. 삭제delete
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JP2000320479A (en) 1999-05-12 2000-11-21 Mitsubishi Electric Corp Multi-cylinder enclosed type compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000320479A (en) 1999-05-12 2000-11-21 Mitsubishi Electric Corp Multi-cylinder enclosed type compressor

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