KR100677291B1 - Suction valve for compressor - Google Patents

Suction valve for compressor Download PDF

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Publication number
KR100677291B1
KR100677291B1 KR1020060001086A KR20060001086A KR100677291B1 KR 100677291 B1 KR100677291 B1 KR 100677291B1 KR 1020060001086 A KR1020060001086 A KR 1020060001086A KR 20060001086 A KR20060001086 A KR 20060001086A KR 100677291 B1 KR100677291 B1 KR 100677291B1
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KR
South Korea
Prior art keywords
opening
section
closing
piston
compressor
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KR1020060001086A
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Korean (ko)
Inventor
노기원
김동한
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엘지전자 주식회사
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Priority to KR1020060001086A priority Critical patent/KR100677291B1/en
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    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • F04B27/0878—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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1009—Distribution members
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Abstract

A suction valve structure of a compressor is provided to distribute stress applied to the valve uniformly by being twisted or spread out in the process of refrigerant gas suction carried out by reciprocation motion of a piston, thereby preventing damage of the valve due to stress concentration during opening/closing operation. A suction valve of a compressor includes a fixed part(43) formed in a thin plate element contacting a front end of a piston to be fixed at the front end of the piston. An opening/closing part(44) is defined on the thin plate element separately from the fixed part by a cutaway groove(42) formed in the center of the thin plate element, and opens and closes a suction hole of the piston. An opening/closing arm part(45) is extended from both sides of the opening/closing part integrally and connects the opening/closing part to the fixed part. The opening/closing arm part has a section formed with a variable width, wherein the section is increased or decreased in the width for distributing stress applied to the thin plate element uniformly over an entire area of the opening/closing arm part.

Description

압축기의 흡입 밸브구조{SUCTION VALVE FOR COMPRESSOR}Suction valve structure of compressor {SUCTION VALVE FOR COMPRESSOR}

도 1은 리니어 압축기의 압축기구부를 도시한 단면도,1 is a cross-sectional view showing a compression mechanism of the linear compressor,

도 2는 상기 리니어 압축기의 압축기구부의 작동상태를 도시한 단면도,2 is a cross-sectional view showing an operating state of the compression mechanism of the linear compressor;

도 3은 상기 리니어 압축기의 흡입밸브의 동작을 도시한 단면도,3 is a cross-sectional view showing the operation of the suction valve of the linear compressor;

도 4 및 도 5는 본 발명의 흡입밸브를 나타낸 정면도,4 and 5 are a front view showing a suction valve of the present invention,

도 6은 본 발명의 압축기 흡입 밸브구조의 응력 분포 상태를 도시한 정면도.6 is a front view showing a stress distribution state of the compressor intake valve structure of the present invention.

(도면의 주요부분에 대한 부호의 설명)(Explanation of symbols for the main parts of the drawing)

10 ; 실린더 20 ; 피스톤10; Cylinder 20; piston

24 ; 흡입유로 25 ; 흡입통구 24; Suction flow path 25; Suction port

42 ; 절개홈 43 ; 고정부 42; Incision grooves 43; Fixture

44; 개폐부 45 ; 개폐팔부 44; Opening and closing part 45; Opening and closing arm

본 발명은 압축기의 흡입 밸브구조에 관한 것으로, 특히 실린더의 압축공간 으로 냉매 가스가 흡입되고 압축되도록 개폐하는 과정에서 흡입밸브에 작용하는 응력이 과도하게 집중되지 않고 균일하게 분포할 수 있도록 한 압축기의 흡입 밸브구조에 관한 것이다.The present invention relates to a structure of a suction valve of a compressor, and more particularly, to provide a uniform distribution of a stress applied to a suction valve in a process of opening and closing a refrigerant gas into a compression space of a cylinder to open and close the refrigerant gas. It relates to a suction valve structure.

일반적으로 압축기(Compressor)는 공기나 냉매 가스 등의 유체를 압축시키는 기계이다. 상기 압축기의 일예로 리니어 압축기는 직선 구동력을 발생시키는 전동기구부의 구동력이 피스톤에 전달되어 그 피스톤이 실린더내부를 직선 왕복 운동하면서 냉매 가스를 흡입하고 압축하여 토출시키게 된다.Generally, a compressor is a machine that compresses a fluid such as air or refrigerant gas. In one example of the compressor, the driving force of the electric motor unit generating the linear driving force is transmitted to the piston so that the piston sucks, compresses and discharges the refrigerant gas while linearly reciprocating the inside of the cylinder.

도 1은 상기 리니어 압축기 압축기구부의 일례를 도시한 것으로, 이에 도시한 바와 같이, 리니어 압축기의 압축기구부는 내부에 압축공간(P)을 이루는 관통구멍이 형성된 실린더(10)와 상기 실린더(10)의 관통구멍에 직선 운동 가능하도록 삽입되는 피스톤(20)과 상기 실린더(10)의 단부에 관통구멍을 복개하도록 결합되는 토출 밸브 조립체(30)를 포함하여 구성된다. FIG. 1 illustrates an example of the linear compressor compression mechanism. As shown in FIG. 1, the compression mechanism of the linear compressor includes a cylinder 10 and a cylinder having a through hole forming a compression space P therein. And a discharge valve assembly 30 coupled to cover the through hole at an end of the cylinder 10 and a piston 20 inserted into the through hole so as to linearly move.

상기 피스톤(20)은 소정의 길이를 갖는 몸통부(21)의 일측에 헤드부(22)가 형성되고 상기 몸통부(21)의 타측에 전동기구부와 연결되는 연결부(23)가 형성된다. 그리고 상기 피스톤(20)을 관통하여 냉매 가스가 유동할 수 있도록 가스 유로(F)가 형성되며 그 가스 유로(F)는 상기 몸통부(21)의 가운데 소정의 깊이를 갖도록 형성되는 흡입유로(24)와 그 흡입유로(24)와 연통되도록 상기 헤드부(22)내에 관통 형성되는 흡입통구(25)로 이루어진다. 그리고 상기 피스톤 헤드부(22)의 선단면에 흡입통구(25), 즉 가스 유로(F)를 개폐하는 흡입 밸브(40)가 장착된다.The piston 20 has a head portion 22 is formed on one side of the body portion 21 having a predetermined length, and the connection portion 23 is formed on the other side of the body portion 21 is connected to the electric mechanism. In addition, a gas flow path F is formed to allow the refrigerant gas to flow through the piston 20, and the gas flow path F is formed to have a predetermined depth among the body portions 21. ) And a suction port 25 formed through the head portion 22 so as to communicate with the suction passage 24. In addition, an intake valve 25, that is, an intake valve 40 for opening and closing the gas flow path F, is mounted on the front end surface of the piston head 22.

상기 토출 밸브 조립체(30)는 실린더(10)의 단부를 복개하도록 결합되는 토 출커버(31)와 그 토출커버(31)의 내부에 삽입되어 실린더(10)의 관통구멍 및 피스톤(20)에 의해 형성되는 압축공간(P)을 개폐하는 토출 밸브(32)와 그 토출 밸브(32)를 탄성적으로 지지하는 밸브스프링(33)을 포함하여 구성된다.The discharge valve assembly 30 is inserted into the discharge cover 31 and the discharge cover 31 coupled to cover the end of the cylinder 10 to the through hole and the piston 20 of the cylinder 10. The discharge valve 32 which opens and closes the compression space P formed by this, and the valve spring 33 which elastically supports the discharge valve 32 are comprised.

상기한 바와 같은 압축기구부는 전동기구부의 구동력이 피스톤에 전달되어 피스톤(20)이 실린더(10)내부를 직선 왕복 운동하게 된다. 상기 과정에서, 도 2에 도시한 바와 같이, 상기 피스톤(20)이 하사점(L) 방향으로 이동하게 되면 토출 밸브(32)가 실린더(10)의 단부에 접촉되어 압축공간(P)을 막게 됨과 동시에 피스톤(20)에 결합된 흡입 밸브(40)가 열리면서 피스톤(20)의 내부에 형성된 가스 유로(F)를 통해 냉매 가스가 실린더(10)의 압축공간(P) 내부로 흡입된다. 그리고 상기 피스톤(20)이 하사점(L)에 도달한 후 하사점(L)에서 상사점(H)으로 이동하게 되면 흡입 밸브(40)가 닫히면서 실린더(10)의 압축공간(P)내에 흡입된 냉매 가스를 압축하게 되며 이어 상사점(H)에 이르게 되면 토출 밸브(32)가 열리면서 압축된 냉매 가스가 토출된다. 이와 같은 과정이 지속적으로 반복되면서 가스를 압축하게 된다.As described above, the compression mechanism has a driving force transmitted to the piston so that the piston 20 linearly reciprocates inside the cylinder 10. In the process, as shown in Figure 2, when the piston 20 moves in the bottom dead center (L) direction discharge valve 32 is in contact with the end of the cylinder 10 to block the compression space (P) At the same time, the suction valve 40 coupled to the piston 20 opens, and the refrigerant gas is sucked into the compression space P of the cylinder 10 through the gas flow path F formed in the piston 20. Then, when the piston 20 reaches the bottom dead center (L) and moves from the bottom dead center (L) to the top dead center (H), the intake valve (40) closes in the compression space (P) of the cylinder (10). When the suctioned refrigerant gas is compressed and reaches the top dead center (H), the discharge valve 32 is opened to discharge the compressed refrigerant gas. This process is repeated continuously to compress the gas.

그러나 상기한 바와 같은 종래 흡입 밸브는 도 3에 도시된 바와 같이 휘어짐과 펴지는 개폐 작용을 하는 과정에서, 휘어짐과 펴짐이 반복되는 부분의 특정영역에 피로충격이 누적되게 되고, 특히 흡입 유량이 급격하게 많아져 과도하게 흡입밸브가 열리게 되는 경우, 상기 특정영역에 집중적으로 응력이 작용하여 밸브의 파손이 유발되는 문제점이 있었다.However, in the conventional suction valve as described above, in the process of opening and closing the bending and unfolding as shown in FIG. When the suction valve is opened excessively, the stress may be concentrated in the specific region, causing the valve to break.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 실린더의 압축공간으로 냉매 가스가 흡입되고 압축되도록 개폐하는 과정에서 발생되는 응력이 과도하게 집중되지 않고 균일하게 분포할 수 있도록 한 압축기의 흡입 밸브구조를 제공하는 것을 목적으로 한다.The present invention has been made to solve the above problems, the suction of the compressor so that the stress generated in the process of opening and closing the refrigerant gas is sucked into the compression space of the cylinder to be compressed and distributed without being excessively concentrated It is an object to provide a valve structure.

상기한 바와 같은 본 발명의 목적을 달성하기 위하여, 실린더 내에서 직선 왕복 운동하면서 냉매 가스를 압축하는 피스톤의 선단면에 접촉설치되는 박판체에 형성되며 상기 피스톤의 선단면에 고정되는 고정부와; 상기 박판체의 중앙영역에 형성되는 절개홈에 의하여 상기 고정부와 구획되며 상기 피스톤의 내부에 형성되는 흡입통구를 개폐하는 개폐부와; 상기 개폐부의 양측에서 일체로 연장형성되어 상기 개폐부와 상기 고정부를 연결하는 개폐팔부; 를 포함하여 구성되며, 상기 개폐팔부의 일부 영역에는 상기 박판체에 작용하는 응력이 균일하게 분포되도록 그 폭이 좁아졌다 다시 넓어지는 구간이 형성되는 것을 특징으로 하는 압축기의 흡입 밸브구조가 제공된다.In order to achieve the object of the present invention as described above, the fixed portion is formed in a thin plate body which is installed in contact with the front end surface of the piston for compressing the refrigerant gas while linear reciprocating motion in the cylinder and fixed to the front end surface of the piston; An opening and closing portion which is partitioned from the fixed portion by a cutout groove formed in a central region of the thin plate body and opens and closes a suction port formed in the piston; An opening and closing arm part integrally formed at both sides of the opening and closing part to connect the opening and closing part and the fixing part; It is configured to include, the inlet valve structure of the compressor is provided in some areas of the opening and closing arm portion is formed so that the width is narrowed and then widened again so that the stress acting on the thin plate body is uniformly distributed.

이하, 본 발명의 압축기 흡입 밸브구조를 첨부도면에 도시한 실시예에 따라 설명하면 다음과 같다.Hereinafter, the compressor intake valve structure of the present invention will be described according to the embodiment shown in the accompanying drawings.

도 4 및 도 5는 본 발명의 압축기 흡입 밸브구조의 일실시예를 도시한 것이며, 흡입밸브를 제외한 다른 구성요소에 대하여는 도 1 을 참조하여 설명한다. 먼저 전동기구부의 구동력을 전달받아 상기 실린더(10) 내부에서 직선 왕복 운동하면 서 냉매 가스를 흡입하고 압축하여 토출시키는 피스톤(20)은 소정의 길이를 가지며 상기 실린더(10) 내부에 삽입되는 환봉 형태의 몸통부(21) 및 그 몸통부(21)의 일측에 형성되는 헤드부(22)와 상기 몸통부(21)의 타측에 형성되어 상기 전동기구부와 연결되는 연결부(23)가 구비되어 이루어진다. 그리고 상기 몸통부(21)와 헤드부(22)를 관통하는 가스 유로(F)가 형성되며 그 가스 유로(F)는 상기 몸통부(21)에 하나로 형성되는 흡입유로(24)와 그 흡입유로(24)에 이어 다수개로 분지되어 상기 헤드부(22)측에 형성되는 다수개의 흡입통구(25)로 형성된다.4 and 5 show an embodiment of the compressor intake valve structure of the present invention, other components other than the intake valve will be described with reference to FIG. First, the piston 20 for sucking, compressing and discharging refrigerant gas while having a linear reciprocating motion in the cylinder 10 by receiving a driving force of the electric mechanism part has a predetermined length and is inserted into the cylinder 10. The body portion 21 and the head portion 22 formed on one side of the body portion 21 and the connecting portion 23 formed on the other side of the body portion 21 is connected to the power mechanism portion is provided. In addition, a gas flow passage F penetrating the body portion 21 and the head portion 22 is formed, and the gas flow passage F is formed in the body portion 21 by a suction flow passage 24 and the suction flow passage. Subsequent to (24), a plurality of branches are formed of a plurality of suction holes 25 formed on the head portion 22 side.

상기 흡입 밸브(40)는, 상기 피스톤(20)의 선단면에 접촉설치되는 박판체에 형성되며 상기 피스톤(20)의 선단면에 고정되는 고정부(43)와, 상기 박판체의 중앙영역에 형성되는 절개홈(42)에 의하여 상기 고정부(43)와 구획되며 상기 피스톤(20)의 내부에 형성되는 흡입통구(25)를 개폐하는 개폐부(44)와, 상기 개폐부의 양측에서 일체로 연장형성되어 상기 개폐부(44)와 상기 고정부(43)를 연결하는 개폐팔부(45)를 포함하여 구성된다. The suction valve 40 is formed in a thin plate body which is installed in contact with the front end face of the piston 20 and is fixed to the front end face of the piston 20 and a central portion of the thin plate body. Opening and closing portion 44 which is partitioned from the fixed portion 43 by the cut groove 42 is formed and opens and closes the suction port 25 formed in the piston 20, and integrally extending from both sides of the opening and closing portion Is formed and comprises an opening and closing arm 45 for connecting the opening and closing portion 44 and the fixing portion 43.

상기 고정부(43)의 중앙에는 상기 피스톤(20)의 선단면과 나사결합될 수 있도록 관통공(41)이 형성되며, 나사결합 이외에도 상기 고정부의 한 점과 상기 피스톤의 선단면을 용접하여 결합하는 것도 가능하다. 상기 절개홈(42)은 일측이 개방된 개곡선의 형태로 형성되어 상기 관통공(41) 또는 용접점을 둘러싸도록 형성되며, 상기 절개홈(42)의 내측영역이 상기 고정부(43)가 되고, 외측영역이 상기 개폐부(44)가 된다. 상기 개폐팔부(45)는 상기 개폐부(44)의 양측에서 일체로 연장형성되어 탄성적으로 휘어졌다가 펴지는 운동을 반복하며 상기 개폐부(44)가 상기 흡입 통구(25)를 개폐할 수 있도록 하며, 상기 개폐팔부(45)의 일부 영역에는 상기 박판체에 작용하는 응력이 균일하게 분포되도록 그 폭이 좁아졌다 다시 넓어지는 구간이 형성된다. A through hole 41 is formed in the center of the fixing part 43 so as to be screwed to the front end surface of the piston 20. In addition to the screwing, one end of the fixing part and the front end surface of the piston are welded. It is also possible to combine. The incision groove 42 is formed in the form of an open curve on one side to surround the through hole 41 or the welding point, the inner region of the incision groove 42 is the fixing portion 43 The outer region is the opening and closing portion 44. The opening and closing arm portion 45 is formed integrally extending from both sides of the opening and closing portion 44 to repeat the elastically curved and stretched movement to allow the opening and closing portion 44 to open and close the suction port (25) In some regions of the opening and closing arm 45, a width of the opening and closing arm 45 is narrowed and widened again so that the stress applied to the thin plate is uniformly distributed.

여기서, 상기 개폐팔부(45)는, 상기 개폐부(44)에 가까운 곳에 위치하며 상기 개폐팔부(45)가 시작되는 구간인 a구간과, 상기 고정부(43)에 가까운 곳에 위치하며 상기 개폐팔부(45)가 끝나는 구간인 c구간과, 상기 a구간과 상기 c구간 사이에 형성되는 b구간으로 이루어지며, 상기 a구간에서 상기 b구간으로 갈수록 폭이 좁아지다가 상기 c구간으로 갈수록 다시 폭이 넓어지도록 형성된다. 즉, 상기 b구간 상에는 상기 개폐팔부(45)의 구간중 가장 폭이 좁은 최소폭부가 형성된다. 즉, 상기 개폐팔부(45)는 상기 c영역을 중심으로 휘어졌다 펴지는 반복거동을 하게 되므로 상기 c영역에는 집중응력이 작용 될 수 있으나, 본 발명과 같이 상기 a역역과 c역역 사이에 가장 폭이 좁은 b영역을 형성함으로써 상기 c역역에 집중되는 응력을 상기 개폐팔부(45) 전체로 균일하게 분산시킬 수 있게 되는 것이다.Here, the opening and closing arm 45 is located in a region close to the opening and closing portion 44, the section a and a section where the opening and closing arm 45 starts, and the position close to the fixing portion 43 and the opening and closing arm portion ( Section c) and section b, which is formed between section a and section c, are narrowed toward the section b from the section a and then wider again to section c. Is formed. That is, on the section b, the narrowest minimum width portion of the section of the opening and closing arm portion 45 is formed. That is, since the opening and closing arm 45 is repeatedly bent and stretched around the c region, a concentrated stress may be applied to the c region, but the widest width between the a region and the c region is as in the present invention. By forming this narrow b region, the stress concentrated in the c region can be uniformly dispersed throughout the opening and closing arm portion 45.

또한 응력이 보다 균일하게 분포되도록 상기 a구간과 c구간의 폭은 동일하며 상기 b구간의 폭은 상기 a구간과 c구간의 폭보다 좁게 형성하는 것이 바람직하다.In addition, the width of the sections a and c is the same so that the stress is more uniformly distributed, and the width of the section b is preferably smaller than the width of the sections a and c.

이하, 본 발명의 압축기 흡입 밸브구조의 작용효과를 설명하면 다음과 같다. 먼저, 상기 피스톤(20)이 전동기구부의 구동력을 전달받아 실린더(10) 내부에서 직선 왕복 운동하게 되면 상기 피스톤(20)의 단부에 결합된 흡입 밸브(40)가 압력차에 의해 열리게 되어 냉매 가스가 상기 피스톤(20)의 가스 유로(F), 즉 흡입유로(24)와 흡입통구(25)를 통해 실린더의 압축공간(P)으로 흡입되고 그 흡입된 냉매 가스는 상기 흡입 밸브(40)가 닫힘과 동시에 압축되면서 상기 토출밸브 조립체(30)를 통해 고압의 상태로 토출되며, 이와 같은 과정이 반복된다. 상기 과정에서, 상기 흡입 밸브(40)의 개폐부(44)는 개폐팔부(45)가 휘어짐에 의해 흡입통구(25)를 열게 되고, 개폐팔부(45)가 펴짐에 의해 흡입통구(27)를 닫게 된다. 이때, 도 6에 도시된 바와 같이 상기 개폐팔부(45)의 a역역과 c역역 사이에 가장 폭이 좁은 b영역을 형성함으로써 상기 c역역에 집중되는 응력을 상기 개폐팔부(45) 전체로 균일하게 분산시킬 수 있게 되며, 응력의 집중으로 인한 밸브의 파손을 방지하여 압축기의 신뢰성을 향상시킬 수 있게 된다.Hereinafter, the operational effects of the compressor intake valve structure of the present invention will be described. First, when the piston 20 is linearly reciprocated in the cylinder 10 by receiving the driving force of the electric mechanism part, the suction valve 40 coupled to the end of the piston 20 is opened by the pressure difference, so that the refrigerant gas Is sucked into the compression space P of the cylinder through the gas flow path F of the piston 20, that is, the suction flow path 24 and the suction port 25, and the suction refrigerant gas is sucked into the suction valve 40. While being closed and compressed at the same time, it is discharged under a high pressure through the discharge valve assembly 30, and this process is repeated. In the above process, the opening and closing portion 44 of the intake valve 40 opens the suction opening 25 by bending the opening and closing arm 45, and closes the suction opening 27 by opening and closing the arm opening 45. do. At this time, as shown in Figure 6 by forming the narrowest b region between the a station and c station of the opening and closing arm portion 45, the stress concentrated in the c region is uniformly throughout the opening and closing arm portion 45 It is possible to disperse and improve the reliability of the compressor by preventing the breakage of the valve due to the concentration of stress.

이상에서 설명한 바와 같이, 본 발명에 의한 압축기의 흡입 밸브구조는 전동기구부의 구동력을 전달받아 피스톤이 실린더 내부에서 직선 왕복 운동함에 따라 압력차에 의해 휘어지고 펴지면서 냉매 가스를 흡입하는 과정에서 그 밸브에 작용하는 응력이 균일하게 분포하게 됨으로써 개폐 작동시 과도한 응력 집중으로 인한 밸브의 파손을 방지하게 되어 압축기의 신뢰성을 높일 수 있는 효과가 있다. As described above, the suction valve structure of the compressor according to the present invention is a valve in the process of sucking the refrigerant gas while being bent and unfolded by the pressure difference as the piston is linearly reciprocated in the cylinder by receiving the driving force of the electric mechanism. Since the stress acting on is uniformly distributed, it is possible to prevent breakage of the valve due to excessive stress concentration during opening and closing operation, thereby increasing the reliability of the compressor.

Claims (3)

실린더 내에서 직선 왕복 운동하면서 냉매 가스를 압축하는 피스톤의 선단면에 접촉설치되는 박판체에 형성되며 상기 피스톤의 선단면에 고정되는 고정부;A fixed part formed on a thin plate which is installed in contact with a front end surface of the piston for compressing the refrigerant gas while linearly reciprocating in the cylinder and fixed to the front end surface of the piston; 상기 박판체의 중앙영역에 형성되는 절개홈에 의하여 상기 고정부와 구획되며 상기 피스톤의 내부에 형성되는 흡입통구를 개폐하는 개폐부;An opening and closing portion which is partitioned from the fixed portion by a cutout groove formed in a central region of the thin plate body and opens and closes a suction port formed in the piston; 상기 개폐부의 양측에서 일체로 연장형성되어 상기 개폐부와 상기 고정부를 연결하는 개폐팔부;An opening and closing arm part integrally formed at both sides of the opening and closing part to connect the opening and closing part and the fixing part; 를 포함하여 구성되며, 상기 개폐팔부의 일부 영역에는 상기 박판체에 작용하는 응력이 균일하게 분포되도록 그 폭이 좁아졌다 다시 넓어지는 구간이 형성되는 것을 특징으로 하는 압축기의 흡입밸브구조.It is configured to include, the suction valve structure of the compressor, characterized in that the section of the opening and closing arm portion is narrowed so that the width is narrowed so that the stress acting on the thin plate is uniformly distributed. 제 1 항에 있어서,The method of claim 1, 상기 개폐팔부는, 상기 개폐부에 가까운 곳에 위치하며 상기 개폐팔부가 시작되는 구간인 a구간;The opening and closing arm section, a section which is located near the opening and closing portion and the opening and closing arm section; 상기 고정부에 가까운 곳에 위치하며, 상기 개폐팔부가 끝나는 구간인 c구간;Located in close to the fixing portion, section c which is the section of the opening and closing arm ends; 상기 a구간과 상기 c구간 사이에 형성되는 b구간;A b section formed between the a section and the c section; 으로 이루어지며, 상기 a구간에서 상기 b구간으로 갈수록 폭이 좁아지다가 상기 c구간으로 갈수록 다시 폭이 넓어지는 것을 특징으로 하는 압축기의 흡입밸브구조.The suction valve structure of the compressor, characterized in that the width is narrowed toward the section b from the section a and the width is widened again to the section c. 제 2 항에 있어서, The method of claim 2, 상기 a구간과 c구간의 폭은 동일하며 상기 b구간의 폭은 상기 a구간과 c구간의 폭보다 좁은 것을 특징으로 하는 압축기의 흡입밸브구조.The width of the section a and c is the same and the width of the section b is narrower than the width of the section a and the section c of the compressor intake valve structure.
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