KR200170571Y1 - Suction loss compensation device of a hermetic reciprocating compressor - Google Patents
Suction loss compensation device of a hermetic reciprocating compressor Download PDFInfo
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- KR200170571Y1 KR200170571Y1 KR2019970028808U KR19970028808U KR200170571Y1 KR 200170571 Y1 KR200170571 Y1 KR 200170571Y1 KR 2019970028808 U KR2019970028808 U KR 2019970028808U KR 19970028808 U KR19970028808 U KR 19970028808U KR 200170571 Y1 KR200170571 Y1 KR 200170571Y1
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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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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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
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
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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
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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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
본 고안은 피스톤(30)의 왕복운동에 따라 실린더블럭(20) 내부로 흡입된 냉매가스를 압축하여 토출시키는 밀폐형 왕복동 압축기에 관한 것으로서, 특히 상기 피스톤(30)의 하사점에 대응되는 실린더블럭(20)에 형성된 보조흡입구(21)와, 흡입머플러(80)에 저장되어 있는 냉매가스를 상기 보조흡입구(21)를 통해 실린더블럭(20) 내부로 공급하는 보조흡입관(82)을 구비함에 따라 냉매가스의 압축과정중 발생되는 재팽창 과정으로 인한 흡입손실을 보상할 수 있어 압축기의 체적효율을 향상시킬 수 있다.The present invention relates to a hermetic reciprocating compressor for compressing and discharging refrigerant gas sucked into the cylinder block 20 according to the reciprocating motion of the piston 30, and in particular, a cylinder block corresponding to the bottom dead center of the piston 30 ( The auxiliary suction port 21 formed in the 20 and the auxiliary suction pipe 82 for supplying the refrigerant gas stored in the suction muffler 80 into the cylinder block 20 through the auxiliary suction port 21 are provided with the refrigerant. It is possible to compensate the suction loss due to the re-expansion process generated during the compression process of the gas can improve the volumetric efficiency of the compressor.
Description
본 고안은 밀폐형 왕복동 압축기에 관한 것으로서, 특히 흡입-압축-토출-흡입과정을 반복하는 압축기의 동작중 간극체적에 의해 발생되는 재팽창 과정으로 인한 흡입손실을 보상하여 체적효율을 향상시키는 밀폐형 왕복동 압축기의 흡입손실 보상장치에 관한 것이다.The present invention relates to a hermetic reciprocating compressor, in particular a hermetic reciprocating compressor which compensates for suction loss due to re-expansion caused by gap volume during operation of a compressor repeating suction-compression-discharge-suction process to improve volumetric efficiency. It relates to a suction loss compensation device of.
일반적으로, 압축기는 증발기에서 증발한 저온·저압의 냉매가스를 응축기에서 응축·액화하기 용이하도록 응축온도에 상당하는 포화압력까지 압력과 온도를 상승시켜 주는 기기이다.In general, a compressor is a device that raises the pressure and temperature to a saturation pressure corresponding to the condensation temperature so that the low-temperature and low-pressure refrigerant gas evaporated in the evaporator can be easily condensed and liquefied in the condenser.
이러한 압축기에는 피스톤의 왕복운동을 이용하여 냉매가스를 압축하는 왕복동 압축기와, 실린더블럭내의 회전자가 회전하며 냉매가스를 압축하는 회전식 압축기와, 임펠러의 원심력을 이용하여 속도에너지를 압력에너지로 변환시켜 냉매가스를 압축하는 터보 압축기 등이 있다.These compressors include a reciprocating compressor that compresses refrigerant gas by using a reciprocating motion of a piston, a rotary compressor that rotates a compressor in a cylinder block to compress refrigerant gas, and converts velocity energy into pressure energy by using a centrifugal force of an impeller. And a turbo compressor for compressing gas.
상기와 같은 압축기는 일반적으로 냉동장치에 장착되어 응축기, 팽창밸브 및 증발기와 함께 냉동작용, 즉 냉매가스의 증발잠열을 이용하여 증발기 주위의 열을 빼앗는 작용을 수행한다.Such a compressor is generally mounted on a refrigerating device to perform a refrigerating operation together with a condenser, an expansion valve, and an evaporator, that is, a function of taking heat around an evaporator by using latent heat of evaporation of refrigerant gas.
다시말해, 압축기가 냉매가스를 압축하여 포화압력까지 냉매가스의 압력과 온도를 상승시켜 주면 응축기가 물이나 공기를 이용하여 고온·고압의 냉매가스가 갖고 있는 열을 흡수하여 냉매가스를 응축·액화시킨다. 이와같이 응축·액화된 냉매가스는 팽창밸브의 교축작용에 의해 온도와 압력이 낮아지고, 이 냉매가스가 증발기에서 증발하면서 피냉각 물체로 부터 열을 흡수하여 냉동작용을 수행하게 된다.In other words, when the compressor compresses the refrigerant gas and raises the pressure and temperature of the refrigerant gas to the saturation pressure, the condenser absorbs the heat of the refrigerant gas of high temperature and high pressure by using water or air to condense and liquefy the refrigerant gas. Let's do it. The refrigerant gas condensed and liquefied thus has a low temperature and pressure due to the throttling action of the expansion valve, and the refrigerant gas evaporates in the evaporator to absorb heat from the object to be cooled to perform a freezing action.
가정용 냉장고 압축기는 주로 1단의 왕복동형으로 방음 및 방진을 위하여 케이스내에 밀폐되게 수납되어 냉장고의 하부에 설치된다. 도 3은 상기와 같이 동작하는 일반적인 밀폐형 왕복동 압축기를 나타낸 평면도이다.The domestic refrigerator compressor is mainly one-stage reciprocating type and is sealed in the case for soundproofing and dustproofing and installed at the bottom of the refrigerator. 3 is a plan view showing a general hermetic reciprocating compressor operating as described above.
도면에 도시된 바와같이, 압축기(110)를 구성하는 압축기구와 구동모터가 상부케이스와 하부케이스로 이루어진 케이스 내부에 밀폐되게 수납되는데, 상기 압축기구와 구동모터는 프레임(120)의 상·하부에 각각 장착되어 있으며 방음 및 방진을 위하여 압축스프링 또는 판스프링을 통해 상기 케이스에 현수 또는 지지되어 있다.As shown in the figure, the compression mechanism and the driving motor constituting the compressor 110 is hermetically received inside the case consisting of the upper case and the lower case, the compression mechanism and the drive motor is the upper and lower parts of the frame 120 It is mounted in each case and is suspended or supported in the case through a compression spring or a leaf spring for soundproof and dustproof.
즉, 프레임(110)의 상부에는 냉매가스를 압축하는 피스톤이 왕복가능하게 내장된 실린더블럭(130)이 설치되어 있으며, 이 실린더블럭(130)의 일측에는 흡입머플러(150)를 통해 흡입된 냉매가스를 실린더블럭(130)내로 공급하고 실린더블럭(130) 내부에서 압축된 냉매가스를 토출머플러(140)로 공급하는 흡입 및 토출밸브 조립체(160)가 장착되어 있다.That is, a cylinder block 130 having a piston for compressing the refrigerant gas is installed on the upper portion of the frame 110 so as to reciprocate. The refrigerant sucked through the suction muffler 150 is provided at one side of the cylinder block 130. The suction and discharge valve assembly 160 is provided to supply gas into the cylinder block 130 and supply the refrigerant gas compressed in the cylinder block 130 to the discharge muffler 140.
상기 흡입 및 토출밸브 조립체(160)는 소형화를 위하여 통상 탄성을 지니는 플랩퍼(flapper) 또는 리드(read)형 박판구조로 구성되어 있으며, 피스톤의 왕복운동으로 인해 발생되는 압력차에 따라 피동적으로 개폐되어 냉매가스를 실린더블럭(130) 내로/부터 흡입 또는 토출한다.The suction and discharge valve assembly 160 has a flapper or lead type thin plate structure which is generally elastic for miniaturization, and is passively opened and closed according to the pressure difference generated by the reciprocating motion of the piston. The refrigerant gas is sucked or discharged into / from the cylinder block 130.
즉, 프레임(120)의 하부에 장착된 구동모터에 의해 편심축(180)이 회전하면 이 편심축(180)의 편심회전량 만큼 크랭크축(170)을 통해 상기 편심축(180)에 결합되어 있는 피스톤이 왕복운동하게 된다. 다시말해, 실린더블럭(130)내의 피스톤이 후진하면 외부의 증발기로 부터 저온·저압의 냉매가스가 흡입파이프(191)와 흡입머플러(150)를 통해 실린더블럭(130)내로 흡입된다.That is, when the eccentric shaft 180 is rotated by the drive motor mounted to the lower portion of the frame 120 is coupled to the eccentric shaft 180 through the crank shaft 170 as much as the eccentric rotation of the eccentric shaft 180 The piston will reciprocate. In other words, when the piston in the cylinder block 130 is reversed, the refrigerant gas of low temperature and low pressure is sucked into the cylinder block 130 through the suction pipe 191 and the suction muffler 150 from the external evaporator.
한편, 피스톤이 전진하면 실린더블럭(130)의 내부로 부터 고온·고압의 냉매가스가 토출머플러(140)와 토출파이프(192)를 통해 응축기로 토출된다. 이때, 흡입머플러(150)와 토출머플러(140)는 냉매가스를 내부에 충전하여 냉매가스의 흡입 및 토출시 발생하는 압력의 맥동에 의한 소음을 저감시킨다.On the other hand, when the piston is advanced, the high-temperature, high-pressure refrigerant gas from the interior of the cylinder block 130 is discharged to the condenser through the discharge muffler 140 and the discharge pipe 192. In this case, the suction muffler 150 and the discharge muffler 140 fill the refrigerant gas therein to reduce noise caused by pulsation of pressure generated during suction and discharge of the refrigerant gas.
상기된 것처럼 종래의 압축기에서는 흡입머플러(150)의 토출관(151)이 실린더블럭(130)에 결합되어 있고, 이 흡입머플러(150)의 토출관(151)을 통해 공급된 냉매가스는 피스톤의 왕복운동으로 인해 발생되는 압력차에 따라 피동적으로 개폐되는 흡입 및 토출밸브 조립체(160)를 통해 실린더블럭(130) 내부로 공급된다.As described above, in the conventional compressor, the discharge pipe 151 of the suction muffler 150 is coupled to the cylinder block 130, and the refrigerant gas supplied through the discharge pipe 151 of the suction muffler 150 is formed of the piston. It is supplied into the cylinder block 130 through the suction and discharge valve assembly 160 which is passively opened and closed according to the pressure difference generated by the reciprocating motion.
그러나, 종래의 압축기는 그 구조상 피스톤의 왕복운동에 따라 흡입-압축-토출-흡입과정을 반복하는 동안에 재팽창 과정이 발생하여 압축기가 이론적으로 흡입·압축할 수 있는 냉매가스량 보다 적은량의 냉매가스를 흡입하게 된다. 따라서, 압축기의 체적효율이 저하되어 전체적인 냉동능력을 저하시킬 수 있다는 문제점이 있다.However, in the conventional compressor, the re-expansion process occurs while repeating the suction-compression-discharge-suction process according to the reciprocating motion of the piston, so that the refrigerant gas is smaller than the amount of refrigerant gas that the compressor can theoretically suck and compress. Inhale. Therefore, there is a problem that the volumetric efficiency of the compressor is lowered and the overall refrigeration capacity can be lowered.
이에 본 고안은 상기와 같은 문제점을 해결하기 위해 고안된 것으로, 재팽창 과정으로 인해 발생되는 압축기의 흡입손실을 보상하여 체적효율을 향상시키므써 전체적인 냉동능력을 향상시키는 밀폐형 왕복동 압축기의 흡입손실 보상장치를 제공하는 것을 그 목적으로 한다.Therefore, the present invention is designed to solve the above problems, the suction loss compensation device of the hermetic reciprocating compressor to improve the overall refrigeration capacity by compensating the suction loss of the compressor caused by the re-expansion process to improve the volumetric efficiency. Its purpose is to provide.
상기와 같은 목적을 달성하기 위하여 본 고안은, 피스톤의 왕복운동에 따라 실린더블럭 내부로 흡입된 냉매가스를 압축하여 토출시키는 밀폐형 왕복동 압축기에 있어서, 상기 피스톤의 하사점에 대응되는 실린더블럭에 형성된 보조흡입구와, 흡입머플러에 저장되어 있는 냉매가스를 상기 보조흡입구를 통해 실린더블럭 내부로 공급하는 보조흡입관을 구비하는 것을 특징으로 한다.In order to achieve the above object, the present invention, in the sealed reciprocating compressor for compressing and discharging the refrigerant gas sucked into the cylinder block in accordance with the reciprocating motion of the piston, the auxiliary formed in the cylinder block corresponding to the bottom dead center of the piston And an auxiliary suction pipe for supplying the refrigerant gas stored in the suction port and the suction muffler into the cylinder block through the auxiliary suction port.
도 1은 본 고안에 따른 흡입손실 보상장치가 장착된 밀폐형 왕복동 압축기를1 is a closed reciprocating compressor equipped with a suction loss compensation device according to the present invention
나타낸 부분 단면도,Indicated partial section,
도 2는 도 1에 도시된 밀폐형 왕복동 압축기의 측면도,Figure 2 is a side view of the hermetic reciprocating compressor shown in Figure 1,
도 3은 일반적인 밀폐형 왕복동 압축기를 나타낸 평면도.3 is a plan view showing a typical hermetic reciprocating compressor.
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
10 : 프레임 20 : 실린더블럭10 frame 20 cylinder block
21 : 보조흡입구 30 : 피스톤21: auxiliary suction port 30: piston
40 : 축수 50 : 크랭크축40: number of axes 50: crankshaft
60 : 편심축 70 : 흡입 및 토출밸브 조립체60: eccentric shaft 70: suction and discharge valve assembly
80 : 흡입머플러 81 : 토출관80: suction muffler 81: discharge tube
82 : 보조흡입관 90 : 토출머플러82: auxiliary suction pipe 90: discharge muffler
이하, 본 고안의 바람직한 일실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention will be described in detail.
도 1은 본 고안에 따른 냉매가스의 흡입손실 보상장치가 장착된 밀폐형 왕복동 압축기를 나타낸 부분 단면도이고, 도 2는 도 1에 도시된 밀폐형 왕복동 압축기의 측면도이다.1 is a partial cross-sectional view showing a hermetic reciprocating compressor equipped with a suction loss compensator for refrigerant gas according to the present invention, and FIG. 2 is a side view of the hermetic reciprocating compressor shown in FIG. 1.
도면에 도시된 바와같이, 피스톤(30)의 왕복운동에 따라 흡입된 냉매가스를 압축하여 토출시키는 실린더블럭(20)이 프레임(10)의 상부에 장착되어 있으며, 상기 실린더블럭(20)의 일측에는 흡입머플러(80)를 통해 흡입된 냉매가스를 실린더블럭(20)내로 공급하고 실린더블럭(20) 내부에서 압축된 냉매가스를 토출머플러(90)로 공급하는 흡입 및 토출밸브 조립체(70)가 장착되어 있다.As shown in the figure, the cylinder block 20 for compressing and discharging the refrigerant gas sucked in accordance with the reciprocating motion of the piston 30 is mounted on the upper portion of the frame 10, one side of the cylinder block 20 The suction and discharge valve assembly 70 for supplying the refrigerant gas sucked through the suction muffler 80 into the cylinder block 20 and supplying the refrigerant gas compressed in the cylinder block 20 to the discharge muffler 90 is provided. It is installed.
상기 피스톤(30)은 축수(40)와 크랭크축(50)를 통해 편심축(60)에 결합되어 있으며, 편심축(60)은 프레임(10)의 하부에 장착된 구동모터에 연동되는 회전축(도시안됨)의 단부에 형성되어 있다.The piston 30 is coupled to the eccentric shaft 60 through the shaft 40 and the crankshaft 50, the eccentric shaft 60 is a rotating shaft that is linked to the drive motor mounted to the lower portion of the frame 10 ( And not shown).
한편, 실린더블럭(20)의 일측벽 즉, 피스톤(30)의 하사점에 대응되는 실린더블럭(20)의 일측벽에는 냉매가스를 흡입하기 위한 보조흡입구(21)가 형성되어 있으며, 흡입머플러(80)에 저장되어 있는 맥동이 완화된 냉매가스를 실린더블럭(60) 내부로 공급하는 보조흡입관(82)이 상기 흡입머플러(80)의 토출관(81)에 결합되어 있다.On the other hand, one side wall of the cylinder block 20, that is, one side wall of the cylinder block 20 corresponding to the bottom dead center of the piston 30 is formed with an auxiliary suction port 21 for sucking the refrigerant gas, the suction muffler ( An auxiliary suction pipe 82 for supplying the pulsation-relieved refrigerant gas stored in the cylinder 80 into the cylinder block 60 is coupled to the discharge pipe 81 of the suction muffler 80.
따라서, 구동모터에 의해 편심축(60)이 회전하면 이 편심축(60)의 편심 회전량만큼 실린더블럭(20) 내부에 장착되어 있는 피스톤(30)이 상사점과 하사점 사이를 직선 왕복운동하게 된다.Therefore, when the eccentric shaft 60 rotates by the drive motor, the piston 30 mounted inside the cylinder block 20 is linearly reciprocated between the top dead center and the bottom dead center by the amount of eccentric rotation of the eccentric shaft 60. Done.
피스톤(30)의 상사점을 기준으로 그랭크축(50)의 회전각이
또한, 피스톤(30)이 하사점 위치에 도달하면 흡입머플러(80)에 저장되어 있는 냉매가스가 보조흡입관(82)과 실린더블럭(20)에 형성된 보조흡입구(21)을 통해 실린더블럭(20) 내부로 공급되어 재팽창 과정으로 인해 발생된 흡입손실을 보상한다.In addition, when the piston 30 reaches the bottom dead center position, the refrigerant gas stored in the suction muffler 80 passes through the auxiliary suction port 21 formed in the auxiliary suction pipe 82 and the cylinder block 20. It is supplied internally to compensate for the suction loss caused by the re-expansion process.
상기와 같이 본 고안은, 피스톤의 하사점에 대응되는 실린더블럭에 흡입머플러에 저장된 냉매가스를 보조흡입관을 통해 실린더블럭 내부로 공급하는 보조흡입구를 설치하여 재팽창 과정으로 인해 발생되는 압축기의 흡입손실을 보상함에 따라 압축기의 체적효율을 향상시킬 수 있다.The present invention as described above, the suction loss of the compressor caused by the re-expansion process by installing the auxiliary suction port for supplying the refrigerant gas stored in the suction muffler into the cylinder block through the auxiliary suction pipe in the cylinder block corresponding to the bottom dead center of the piston. As a result, the volumetric efficiency of the compressor can be improved.
본 고안은 도면에 도시된 일실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술분야에 통상의 지식을 지닌 자라면 이로부터 다양한 변형 및 균등한 타실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 고안의 진정한 기술적 보호범위는 첨부된 실용신안등록청구의 범위에 의해서만 정해져야 할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention should be defined only by the scope of the attached utility model registration request.
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