KR100308293B1 - Structure of Differential Pressure Valve of Scroll Compressor - Google Patents
Structure of Differential Pressure Valve of Scroll Compressor Download PDFInfo
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- KR100308293B1 KR100308293B1 KR1019980063587A KR19980063587A KR100308293B1 KR 100308293 B1 KR100308293 B1 KR 100308293B1 KR 1019980063587 A KR1019980063587 A KR 1019980063587A KR 19980063587 A KR19980063587 A KR 19980063587A KR 100308293 B1 KR100308293 B1 KR 100308293B1
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- differential pressure
- pressure valve
- scroll
- installation
- fixed scroll
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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
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
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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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
본 발명은 스크롤 압축기의 차압밸브 설치 구조에 관한 것이다. 종래에는 차압밸브가 두께가 얇은 상부격막에 설치되어 있어 장시간 운전시 진동으로 유동되거나 이탈되는 설치의 불안정성 및 기능 상실을 초래하는 문제점이 있었다. 따라서 본 발명은 고정스크롤의 상부측에 고.저압을 분리시키는 상부격막이 설치되고, 이의 상부측 탑캡 사이의 공간부로 토출실이 마련됨에 있어서, 상기 고정스크롤에 개방부를 가지면서 차압밸브를 설치할 수 있는 설치공간을 확보하고, 상기 설치공간과 고압부가 서로 통하도록 연결통로를 형성함으로써 기존에 차압밸브를 두께가 얇은 상부격막에 설치함에 따른 설치의 불안정성 및 이탈에 의한 기능상실을 미연에 방지할 수 있을 뿐만 아니라 이로 인해 압축기의 신뢰성을 보다 향상시킬 수 있는 효과를 갖게 된다.The present invention relates to a differential pressure valve installation structure of a scroll compressor. Conventionally, since the differential pressure valve is installed in a thin upper diaphragm, there is a problem of causing instability and loss of function of the installation, which flows or escapes due to vibration during prolonged operation. Therefore, in the present invention, the upper diaphragm separating high and low pressure is installed on the upper side of the fixed scroll, and the discharge chamber is provided in the space between the upper caps of the upper side, and the differential pressure valve can be installed while having the opening in the fixed scroll. It is possible to prevent the loss of function due to installation instability and detachment by installing the differential pressure valve in the upper thick diaphragm by securing the installation space and forming a connection passage so that the installation space and the high pressure part communicate with each other. In addition, this has the effect of further improving the reliability of the compressor.
Description
본 발명은 스크롤 압축기(Scroll compressor)의 차압밸브에 관한 것이다.The present invention relates to a differential pressure valve of a scroll compressor.
일반적으로 스크롤 압축기는 도 1에 도시된 바와 같이 흡입구(1A)를 갖는 밀폐용기(1) 내의 상.하부측에 상.하부프레임(2)(2A)이 설치되어 있고, 이의 사이에는 코일이 감겨진 고정자(3) 내부에 회전자(4)가 구비되어 전원 공급에 의한 전자기적인 상호 작용에 의해서 상기 회전자(4)가 고정자(3) 내부에서 회전하도록 구성되어 있다. 또한 상기 회전자(4)에는 수직봉 형태의 크랭크축(5)이 중앙부를 관통하는 식으로 압입 설치되어 있고, 상기 크랭크축(5)의 상.하단부는 각각 상기 상.하부프레임(2)(2A)에 회전 가능하게 지지되어 있다. 그리고 상기 상부프레임(2)의 상부측에는 인벌류트 곡선으로 랩(Wrap)(6A)이 형성된 선회스크롤(6)이 상기 크랭크축(5)의 상단 편심부(5A)에 결합되어 있으며, 상기 선회스크롤(6)의 상부측에는 선회스크롤(6)의 랩(6A)과 서로 맞물려 압축실을 형성하는 고정스크롤(7)이 구비되어 있다. 이와 함께 상기 상부프레임(2)과 선회스크롤(6) 사이에는 자전방지기구로써 올담링(8)이 형합되어 있고, 상기 고정스크롤(7)의 상부측에는 고.저압을 분리시키는 상부격막(9)과 이의 상부측 탑캡(1B) 사이의 공간부로 토출실(10)이 형성되어 있으며, 상기 고정스크롤(7) 및 상부격막(9)에는 압축된 냉매가스가 상기 토출실(10)로 토출될 수 있도록 토출포트(7B) 및 토출구(9A)가 형성되어 있다. 그리고 상기 토출실(10)에는 상부격막(9)의 토출구(7B)를 통해서 토출실(10)로 토출된 압축냉매가스가 사이클을 이루는 다른 장치로 보내질 수 있도록 토출파이프(10A)가 설치되어 있다. 여기서 미설명 부호, 7A는 고정스크롤(7)에 형성된 랩이다.Generally, the scroll compressor is provided with upper and lower frames 2 and 2A on the upper and lower sides of the sealed container 1 having the inlet 1A as shown in FIG. 1, and a coil is wound therebetween. The rotor 4 is provided inside the true stator 3, and the rotor 4 is configured to rotate inside the stator 3 by electromagnetic interaction by power supply. In addition, the rotor 4 is press-installed in such a way that the vertical rod-shaped crank shaft 5 penetrates the center portion, and the upper and lower ends of the crank shaft 5 are respectively the upper and lower frames 2 (( It is rotatably supported by 2A). And the upper side of the upper frame 2, the swing scroll (6) having a wrap (6A) formed in the involute curve is coupled to the upper eccentric portion (5A) of the crankshaft (5), the turning scroll On the upper side of (6), there is provided a fixed scroll (7) which meshes with the wrap (6A) of the turning scroll (6) to form a compression chamber. Along with the upper frame (2) and the swinging scroll (6), the Oldham ring (8) is formed as a rotating prevention mechanism, and the upper diaphragm (9) separating high and low pressures on the upper side of the fixed scroll (7). And a discharge chamber 10 is formed in the space portion between the upper cap 1B and the upper side top cap 1B, and compressed refrigerant gas may be discharged into the discharge chamber 10 in the fixed scroll 7 and the upper diaphragm 9. The discharge port 7B and the discharge port 9A are formed so that it may be. The discharge chamber 10 is provided with a discharge pipe 10A so that the compressed refrigerant gas discharged to the discharge chamber 10 through the discharge port 7B of the upper diaphragm 9 can be sent to another device forming a cycle. . Here, reference numeral 7A denotes a wrap formed on the fixed scroll 7.
이와 같이 구성된 상기 스크롤 압축기는 먼저, 고정자(3)에 전원이 공급되고, 상기 고정자(3) 내부의 회전자(4)가 고정자(3)와의 전자기적인 상호 작용에 의해서 회전한다. 이에 따라 상기 회전자(4)의 중앙부에 압입 설치된 크랭크축(5)이 회전하고, 상기 크랭크축(5)의 회전에 의해서 크랭크축(5)의 상단 편심부(5A)에 설치된 선회스크롤(6)이 편심거리만큼 편심회전하는데, 이때 상기 선회스크롤(6)은 올담링(8)에 의해 축중심을 원점으로 선회반경만큼 떨어진 거리에서 선회운동을 하게 된다. 그리고 상기 선회스크롤(6)의 선회운동에 의해 그 선회스크롤(6)과 고정스크롤(7)의 각 랩(6A)(7A) 사이에는 압축실이 형성되고, 그 압축실은 지속적인 선회운동에 의해 중심으로 이동하면서 체적이 감소되어 밀폐용기(1)의 흡입구(1A)를 통해 상기 밀폐용기(1) 내부로 흡입된 냉매가스를 더욱 압축하게 된다. 또한 이 압축된 냉매는 다시 고정스크롤(7)에 형성된 토출포트(7B) 및 상부격막(9)에 형성된 토출구(9A)를 통해 토출실(10)로 토출되고, 이 토출된 압축냉매가스는 상기 토출실(10)에 설치된 토출파이프(10A)를 통해 사이클을 이루는 다른 장치로 보내지게 된다.The scroll compressor configured as described above is first powered by the stator 3, and the rotor 4 inside the stator 3 rotates by electromagnetic interaction with the stator 3. Accordingly, the crankshaft 5 press-fitted to the center of the rotor 4 is rotated, and the turning scroll 6 provided at the upper eccentric portion 5A of the crankshaft 5 by the rotation of the crankshaft 5. ) Rotates eccentrically by the eccentric distance, wherein the turning scroll 6 is rotated at a distance separated by the turning radius from the axial center by the old dam ring 8. In addition, a compression chamber is formed between the turning scroll 6 and each of the wraps 6A and 7A of the fixed scroll 7 by the turning movement of the turning scroll 6, and the compression chamber is centered by the continuous turning movement. The volume is reduced while moving to further compress the refrigerant gas sucked into the sealed container 1 through the inlet port 1A of the sealed container 1. The compressed refrigerant is again discharged to the discharge chamber 10 through the discharge port 7B formed in the fixed scroll 7 and the discharge port 9A formed in the upper diaphragm 9, and the discharged compressed refrigerant gas is Through the discharge pipe 10A provided in the discharge chamber 10, it is sent to another device forming a cycle.
한편, 상기 상부격막(9)에는 과다한 차압 발생시 고압을 저압으로 바이패스(By-Pass)시킬 수 있는 차압밸브(11)가 설치되어 있다. 상기 차압밸브(11)는 도 2에 도시된 바와 같이 속이 빈 통체로 형성된 밸브몸체(12) 내부에 일정압으로 설정된 스프링(13) 위에 볼(ball)(14)을 내장시킨 구조로 되어 있는 것으로, 상기 밸브몸체(12)의 상부측에는 상기 볼(14)의 이동에 의해서 개폐되도록 중앙부에 개폐공 (15A)이 형성된 상부차단판(15)이 설치되어 있고, 하부측에는 중앙부에 바이패스공 (16B)이 형성된 하부차단판(16)이 설치되어 있다. 이와같은 구조로 된 상기 차압밸브(11)는 먼저, 고압부의 압력이 스프링(13) 압력 이상이 되면, 이의 압력으로 볼(14)이 스프링(13)을 압축함으로써 고압부의 압축냉매가스가 바이패스공(16B)을 통해 바이패스(by-pass)되고, 바이패스로 인해 고압부의 압력이 다시 스프링(13)의 압력 이하가 되면, 상기 볼(14)이 스프링(13)의 압력에 의해서 다시 원위치로 상승하면서 상기 밸브몸체(12)의 상부차단판(15)에 형성된 개폐공(15A)을 차단시킴으로 써 고압부와 저압부 간의 적정 차압을 유지토록 하고 있다.On the other hand, the upper diaphragm 9 is provided with a differential pressure valve 11 for bypassing the high pressure to low pressure when excessive differential pressure is generated. As shown in FIG. 2, the differential pressure valve 11 has a structure in which a ball 14 is embedded on a spring 13 set to a constant pressure inside a valve body 12 formed of a hollow cylinder. The upper side of the valve body 12 is provided with an upper blocking plate 15 having an opening and closing hole 15A formed in the center portion so as to be opened and closed by the movement of the ball 14, and the bypass portion 16B in the center portion at the lower side. The lower blocking plate 16 is formed. In the differential pressure valve 11 having such a structure, first, when the pressure of the high pressure portion is equal to or greater than the pressure of the spring 13, the ball 14 compresses the spring 13 by the pressure thereof so that the compressed refrigerant gas of the high pressure portion is bypassed. By-pass is passed through the ball 16B, and when the pressure of the high pressure portion again becomes below the pressure of the spring 13 due to the bypass, the ball 14 is returned to its original position by the pressure of the spring 13 again. While maintaining the proper pressure difference between the high pressure portion and the low pressure portion by blocking the opening and closing hole (15A) formed in the upper blocking plate 15 of the valve body 12 while rising.
그러나 이러한 종래의 스크롤 압축기의 차압밸브 설치구조는 두께가 얇은 상부격막에 구멍을 뚫어 그 구멍에 나선을 형성하고, 차압밸브의 몸체 외측면에는 상기 구멍의 나선에 결합되는 또 다른 나선을 형성하여 나선결합식으로 상호 체결시켜 설치하도록 되어 있어, 압축기를 장시간 운전시 그 결합부의 체결력이 약해져 밸브가 유동되거나 이탈됨으로써 그 기능을 상실하게 되는 문제점이 있었다.However, such a differential pressure valve installation structure of the conventional scroll compressor drills a hole in the thin upper diaphragm to form a spiral in the hole, and the outer surface of the body of the differential pressure valve to form another spiral coupled to the spiral of the hole Since the coupling is installed to be mutually fastened, when the compressor is operated for a long time, there is a problem in that the fastening force of the coupling part is weakened and the function of the valve is lost due to flow or departure of the valve.
따라서 본 발명의 목적은 차압밸브를 보다 견고하면서도 안정되게 설치하는데 있다.Therefore, an object of the present invention is to install a differential pressure valve more robust and stable.
도 1은 일반적인 스크롤 압축기의 내부 구성을 보인 단면도.1 is a cross-sectional view showing the internal configuration of a typical scroll compressor.
도 2는 종래의 스크롤 압축기의 차압밸브 구조를 보인 단면도.Figure 2 is a cross-sectional view showing a differential pressure valve structure of a conventional scroll compressor.
도 3은 본 발명에 의한 차압밸브의 설치 구조를 보인 스크롤 압축기의 단면도.3 is a cross-sectional view of the scroll compressor showing the installation structure of the differential pressure valve according to the present invention.
**도면의주요부분에대한부호의설명**** description of the symbols for the main parts of the drawings **
12:밸브몸체 13:스프링12: valve body 13: spring
14:볼(Ball) 15,16:상.하부차단판14: Ball 15, 16: upper and lower blocking plates
15A:개폐공 16A:바이패스공15A: Opening and closing hole 16A: Bypass ball
110:밀폐용기 111:흡입실110: airtight container 111: suction chamber
111A:흡입파이프 111B:탑캡111A: Suction pipe 111B: Top cap
112,112A:상.하부프레임 113:고정자112, 112A: Upper and lower frames 113: Stators
114:회전자 115:크랭크축114: rotor 115: crankshaft
115A:편심부 116:선회스크롤115A: Eccentric 116: Slewing scroll
116A,117A:랩(WRAP) 117:고정스크롤116A, 117A: WRAP 117: Fixed Scroll
117B,9A:토출포트 118:올담링117B, 9A: Discharge port 118: Old Daming
119:상부격막 120:토출실119: upper diaphragm 120: discharge chamber
120A:토출파이프 121:체크밸브120A: Discharge pipe 121: Check valve
122:설치공간 122A:개방부122: installation space 122A: open
123:연결통로123: connecting passage
이러한 본 발명의 목적을 달성하기 위하여 고정스크롤의 상부측에 고.저압을 분리시키는 상부격막이 설치되고, 이의 상부측 탑캡 사이의 공간부로 고압측인 토출실이 형성되며, 상부격막의 하측에는 저압측인 흡입실이 형성되는 것에 있어서, 상기 고정스크롤에 상기 상부격막을 향하는 개방부를 가지면서 상기 저압측인 흡입실측에 위치하는 설치공간이 형성되고, 상기 저압측인 설치공간과 고압측인 토출실을 연결하는 연결통로가 형성되며, 상기 설치공간에는 상기 연결통로를 개폐하는 차압밸브가 설치된 것을 특징으로 한 스크롤 압축기의 차압밸브 설치구조가 제공된다.In order to achieve the object of the present invention, an upper diaphragm separating high and low pressures is installed on the upper side of the fixed scroll, and a discharge chamber is formed at a high pressure side as a space between the upper caps of the upper side, and a lower pressure is formed on the lower side of the upper diaphragm. In the side suction chamber is formed, an installation space located on the suction chamber side of the low pressure side is formed in the fixed scroll having an opening toward the upper diaphragm, the installation space on the low pressure side and the discharge chamber on the high pressure side A connection passage is formed to connect the pressure difference valve installation structure of the scroll compressor, characterized in that a differential pressure valve for opening and closing the connection passage is installed in the installation space.
이하 첨부된 도면을 참조로 하여 본 발명의 구성을 실시예에 따라 상세히 설명한다.Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
도 3은 본 발명에 의한 차압밸브의 설치 구조를 보인 스크롤 압축기의 단면도로서, 이 스크롤 압축기는 통상에서와 같이 흡입파이프(111A)를 갖는 밀폐용기 (110) 내의 상.하부측에 상.하부프레임(112)(112A)이 설치되고, 이의 사이에는 코일이 감겨진 고정자(113) 내부에 회전자(114)가 구비되어 전원 공급에 의한 전자기적인 상호 작용에 의해서 상기 회전자(114)가 고정자(113) 내부에서 회전하도록 구성된다.3 is a cross-sectional view of the scroll compressor showing the structure of the differential pressure valve according to the present invention, the scroll compressor is the upper and lower frames on the upper and lower sides in the sealed container 110 having the suction pipe (111A) as usual. (112) (112A) is installed, between the rotor 114 is provided inside the stator 113, the coil is wound between the rotor 114 by the electromagnetic interaction by the power supply to the stator ( 113) configured to rotate inside.
또한 상기 회전자(114)에는 수직봉 형태의 크랭크축(115)이 중앙부를 관통하는 식으로 압입 설치되고, 상기 크랭크축(115)의 상.하단부는 각각 상기 상.하부프레임(112)(112A)에 회전 가능하게 지지된다.In addition, the rotor 114 has a vertical rod-shaped crank shaft 115 is press-installed in a manner that penetrates the center portion, the upper and lower ends of the crank shaft 115, respectively, the upper and lower frames 112, 112A. Is rotatably supported.
그리고 상기 상부프레임(112)의 상부측에는 인벌류트 곡선으로 랩(116A)이 형성된 선회스크롤(116)이 상기 크랭크축(115)의 상단 편심부(114A)에 결합되며, 상기 선회스크롤(116)의 상부측에는 선회스크롤(116)의 랩(116A)과 서로 맞물려 압축실을 형성하도록 랩(117A)을 고정스크롤(117)이 구비된다.And the upper side of the upper frame 112, the swing scroll 116 having the wrap 116A formed in the involute curve is coupled to the upper eccentric portion 114A of the crankshaft 115, of the turning scroll 116 On the upper side, the fixed scroll 117 is provided with the wrap 117A to be engaged with the wrap 116A of the turning scroll 116 to form a compression chamber.
이와 함께 상기 상부프레임(112)과 선회스크롤(116) 사이에는 자전방지기구로써 올담링(118)이 형합되고, 상기 고정스크롤(117)의 상부측에는 고.저압을 분리시키는 상부격막(119)과 이의 상부측 탑캡(111B) 사이의 공간부로 고압측인 토출실 (120)이 형성된다.In addition, between the upper frame 112 and the swinging scroll 116, the old dam ring 118 is formed as an anti-rotation mechanism, and the upper diaphragm 119 separating the high and low pressures on the upper side of the fixed scroll 117. The discharge chamber 120 on the high pressure side is formed as a space portion between the upper side top cap 111B.
상기 상부격막(119)의 상부측에는 고압측인 토출실(120)이 형성되어 토출파이프(120A)가 연결됨과 아울러 하부측에는 저압측인 흡입실(111)이 형성되어 흡입파이프(111A)가 연결된다.The upper side of the upper diaphragm 119 is formed with a discharge chamber 120, which is a high pressure side, is connected to the discharge pipe 120A, and the suction chamber 111, which is a low pressure side, is formed at the lower side, and the suction pipe 111A is connected. .
상기 고정스크롤(117)에는 압축된 냉매가스가 상기 토출실(120)로 토출될 수 있도록 토출구(119A)가 형성됨과 아울러 상기 토출실(120)에는 토출된 냉매가스가 사이클을 이루는 다른 장치로 보내질 수 있도록 토출파이프(120A)가 형성된다. 이와 함께 과다한 차압 발생시 고압을 저압으로 바이패스시킬 수 있는 차압밸브(121)가 구비된다.A discharge port 119A is formed in the fixed scroll 117 to allow the compressed refrigerant gas to be discharged into the discharge chamber 120, and the discharged refrigerant gas may be sent to another device forming a cycle. The discharge pipe 120A is formed to be able to. Along with this, a differential pressure valve 121 capable of bypassing high pressure to low pressure when excessive differential pressure is generated is provided.
이러한 상기 스크롤 압축기에 있어, 본 발명은 상기 차압밸브(121)를 고정스크롤(117)에 설치하는 것으로, 이의 설치를 위해 상기 고정스크롤(117)에는 차압밸브(121)가 설치될 수 있는 설치공간(122)이 확보된다. 상기 설치공간(122)은 차압밸브(121)의 바이패스가 이루어질 수 있도록 개방부(122A)를 가지며, 또한 고압부와 통할 수 있도록 상기 고압측인 토출실(120)과 저압측인 흡입실(111)에 연통되어 있는 설치공간(122) 사이에 연결통로(123)가 형성된다. 상기 차압밸브(121)는 통상의 것과 동일하다. 즉 도 2에 도시된 바와 같이 속이 빈 통체로 형성된 밸브몸체(12) 내부에 일정압으로 설정된 스프링(13) 위에 볼(ball)(14)을 내장시킨 구조로 되어 있고, 상기 밸브몸체(12)의 상부측에는 상기 볼(14)의 이동에 의해서 개폐되도록 중앙부에 개폐공(15A)이 형성된 상부차단판(15)과 하부측에는 중앙부에 바이패스공(16B)이 형성된 하부차단판(16)이 각각 설치되어 있다. 이와 같이 구성된 본 발명은 이상고압 발생시, 고압부의 압축냉매가스가 연결통로(123)를 통해 설치공간(122) 내부로 유입된다. 그리고 이 유입된 압축냉매가스의 압력이 스프링(13)의 설정압 이상이 되면 스프링(13)을 탄성력을 극복하면서 볼(14)을 하향으로 이동시키게 되고, 상기 볼(14)의 하향 이동으로 밸브몸체(12)의 상부차단판(15)에 형성된 개폐공(15A)이 개방된다. 이에 따라 상기 연결통로(123)를 통해 설치공간(122)으로 유입된 압축냉매가스는 밸브몸체(12)의 하부차단판(16)에 형성된 바이패스공 (16B)을 통해 바이패스됨으로써 적정 차압을 유지토록 하는 것이다.In the scroll compressor, the present invention is to install the differential pressure valve 121 to the fixed scroll 117, the installation space in which the differential pressure valve 121 is installed in the fixed scroll 117 for installation thereof. 122 is secured. The installation space 122 has an opening portion 122A for bypassing the differential pressure valve 121, and the discharge chamber 120 on the high pressure side and the suction chamber 111 on the low pressure side to communicate with the high pressure portion. The connecting passage 123 is formed between the installation space 122 is in communication with. The differential pressure valve 121 is the same as the conventional one. That is, as shown in Figure 2 has a structure in which a ball (14) is built on the spring 13 set to a constant pressure inside the valve body 12 formed of a hollow cylinder, the valve body 12 On the upper side of the upper blocking plate 15, the opening and closing hole 15A is formed in the center portion so as to be opened and closed by the movement of the ball 14 and the lower blocking plate 16, the bypass hole 16B is formed in the center portion, respectively It is installed. In the present invention configured as described above, when the abnormal high pressure is generated, the compressed refrigerant gas of the high pressure portion is introduced into the installation space 122 through the connection passage 123. When the pressure of the introduced compressed refrigerant gas is equal to or greater than the set pressure of the spring 13, the ball 13 is moved downward while overcoming the elastic force of the spring 13, and the valve is moved downward by moving the ball 14. The opening and closing hole 15A formed in the upper blocking plate 15 of the body 12 is opened. Accordingly, the compressed refrigerant gas introduced into the installation space 122 through the connection passage 123 is bypassed through the bypass hole 16B formed in the lower blocking plate 16 of the valve body 12 to obtain an appropriate differential pressure. To keep it.
이같이 본 발명은 고정스크롤에 설치공간을 확보하여 차압밸브를 설치함으로써 기존에 차압밸브를 두께가 얇은 상부격막에 설치함에 따른 설치의 불안정성 및 이탈에 의한 기능상실을 미연에 방지할 수 있을 뿐만 아니라 이로 인해 압축기의 신뢰성을 보다 향상시킬 수 있는 효과를 갖게 된다.As described above, the present invention can prevent the instability of the installation due to the installation of the differential pressure valve by securing the installation space in the fixed scroll and the malfunction due to the detachment by installing the differential pressure valve on the thin upper diaphragm. Due to this has the effect of further improving the reliability of the compressor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980063587A KR100308293B1 (en) | 1998-12-31 | 1998-12-31 | Structure of Differential Pressure Valve of Scroll Compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980063587A KR100308293B1 (en) | 1998-12-31 | 1998-12-31 | Structure of Differential Pressure Valve of Scroll Compressor |
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| Publication Number | Publication Date |
|---|---|
| KR20000046860A KR20000046860A (en) | 2000-07-25 |
| KR100308293B1 true KR100308293B1 (en) | 2002-05-13 |
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| KR1019980063587A Expired - Fee Related KR100308293B1 (en) | 1998-12-31 | 1998-12-31 | Structure of Differential Pressure Valve of Scroll Compressor |
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