KR102797451B1 - Swash type compressor - Google Patents
Swash type compressor Download PDFInfo
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- KR102797451B1 KR102797451B1 KR1020200052384A KR20200052384A KR102797451B1 KR 102797451 B1 KR102797451 B1 KR 102797451B1 KR 1020200052384 A KR1020200052384 A KR 1020200052384A KR 20200052384 A KR20200052384 A KR 20200052384A KR 102797451 B1 KR102797451 B1 KR 102797451B1
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- 239000003507 refrigerant Substances 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims description 5
- 239000000446 fuel Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
- 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
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
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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
- 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
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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
- 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
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/1045—Cylinders
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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
- 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
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/1054—Actuating elements
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- 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
- F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
본 발명은, 피스톤이 왕복 가능하게 설치되는 실린더보어가 형성된 실린더블록; 상기 실린더블록의 전방에 설치되며, 회전축 및 사판을 수용하는 사판실이 내부에 형성된 전방하우징; 상기 실린더블록의 후방에 설치되며, 냉매가 흡입 및 압축되는 흡입실과 토출실이 형성된 후방하우징; 및 상기 피스톤의 왕복거리를 측정하는 갭센서를 포함하는 사판식 압축기를 제공한다.
본 발명에 따른 사판식 압축기에 의하면, 갭센서에 의해 측정된 피스톤의 왕복거리와, 흡입압력센서에 의해 측정된 흡입실의 냉매 압력값에 기초하여 압축기의 토크를 산출함으로써, 종래와 같이 많은 수의 부품을 구비하지 않고도 압축기의 토크를 계산할 수 있으며, 피스톤의 거동을 직접 측정함으로써 ±1Nm 수준의 정밀한 토크값의 계산이 가능하게 된다. 또한, 본 발명에 의하면, 차량별/엔진별/압축기 사양에 무관하게 압축기 토크의 튜닝을 간소화할 수 있으며, 불필요한 토크의 보상을 간소화하여 차량의 연비 및 승차감을 개선할 수 있다.The present invention provides a swash plate type compressor including a cylinder block having a cylinder bore in which a piston is reciprocally installed; a front housing installed at the front of the cylinder block and having a swash plate room formed therein for accommodating a rotating shaft and a swash plate; a rear housing installed at the rear of the cylinder block and having a suction room and a discharge room formed therein in which refrigerant is suctioned and compressed; and a gap sensor for measuring the reciprocating distance of the piston.
According to the swash plate compressor of the present invention, the torque of the compressor can be calculated based on the reciprocating distance of the piston measured by the gap sensor and the refrigerant pressure value of the suction chamber measured by the suction pressure sensor, thereby enabling the calculation of the torque of the compressor without having a large number of parts as in the past, and calculating a precise torque value of ±1 Nm level by directly measuring the behavior of the piston is possible. In addition, according to the present invention, the tuning of the compressor torque can be simplified regardless of the vehicle/engine/compressor specifications, and the compensation of unnecessary torque can be simplified to improve the fuel efficiency and ride comfort of the vehicle.
Description
본 발명은 사판식 압축기에 관한 것으로서, 더욱 상세하게는, 외부로부터 흡입한 냉매를 압축하여 토출하는 사판식 압축기에 관한 것이다.The present invention relates to a swash plate compressor, and more specifically, to a swash plate compressor that compresses and discharges refrigerant sucked in from the outside.
일반적으로, 압축기란, 외부로부터 냉매를 흡입하여 토출하는 장치를 의미한다. 압축기는 차량용 에어컨에 주로 사용되며, 증발기로부터 공급받은 냉매를 압축한 후, 응축기로 공급하는 역할을 한다. 이러한 압축기는, 구동원에 따라 기계식, 전동식으로 구분되며, 구동방식에 따라 스크롤식, 사판식 등으로 구분되기도 한다.In general, a compressor is a device that sucks in refrigerant from the outside and discharges it. Compressors are mainly used in vehicle air conditioners, and their role is to compress the refrigerant supplied from the evaporator and then supply it to the condenser. These compressors are classified into mechanical and electric types according to the driving source, and are also classified into scroll and plate types according to the driving method.
그 중, 사판식 압축기란, 회전축에 경사지게 배치된 사판의 회전을 이용하여 냉매를 흡입, 압축 및 토출하는 장치를 의미한다. 이러한 사판식 압축기는, 실린더블록의 실린더보어에 피스톤이 왕복 가능하게 설치되며, 회전축에 경사지게 결합된 사판의 끝에 피스톤이 각각 설치된다. 따라서 사판식 압축기는, 회전축의 회전 시 사판이 같이 회전하게 되고, 사판의 회전에 따라 사판에 결합된 각각의 피스톤이 실린더보어에서 왕복운동을 하게 된다.Among these, a swash plate compressor refers to a device that sucks, compresses, and discharges refrigerant by utilizing the rotation of swash plates arranged obliquely on a rotating shaft. In this swash plate compressor, a piston is installed reciprocally in a cylinder bore of a cylinder block, and a piston is installed at each end of a swash plate obliquely coupled to a rotating shaft. Therefore, in the swash plate compressor, the swash plates rotate together when the rotating shaft rotates, and each piston coupled to the swash plates reciprocates in the cylinder bore according to the rotation of the swash plates.
한편, 사판식 압축기는, 압축부하 변동이 엔진부하 변동과 연결되므로, 압축기의 토크 변동을 검출해서, 압축기의 토크 변동에 기초하여 엔진 회전수를 제어할 필요가 있다.Meanwhile, since the compression load variation of the swash plate compressor is linked to the engine load variation, it is necessary to detect the torque variation of the compressor and control the engine rotation speed based on the torque variation of the compressor.
이때, 종래의 사판식 압축기에 의하면, 회전축과 결합되는 이동로드와, 이동로드의 작용력이 작용하는 감지체와, 이격감지센서 및 유량검출기구를 통해 압축기의 토크를 예측한다. 따라서 종래의 사판식 압축기에 의하면, 회전축과 이동로드의 결합이 필요하며, 이동로드의 작용력이 작용하는 감지체가 필요하게 되며, 이와 같이 결합된 부품이 많아 토크 측정의 정확도가 떨어지는 문제가 있다.At this time, according to the conventional swash plate type compressor, the torque of the compressor is predicted through the moving rod coupled with the rotating shaft, the sensor on which the force of the moving rod is applied, the separation detection sensor, and the flow rate detection mechanism. Therefore, according to the conventional swash plate type compressor, the coupling of the rotating shaft and the moving rod is required, and the sensor on which the force of the moving rod is applied is required, and there is a problem that the accuracy of torque measurement is low due to the large number of such coupled parts.
본 발명에 따른 사판식 압축기에 의하면, 부품을 간소화하며, 피스톤의 거동을 직접 측정하여 보다 정밀한 압축기 토크의 계산이 가능한 사판식 압축기를 제공하는 데 목적이 있다.The purpose of the present invention is to provide a swash plate compressor that simplifies parts and enables more precise calculation of compressor torque by directly measuring piston behavior.
본 발명은, 피스톤이 왕복 가능하게 설치되는 실린더보어가 형성된 실린더블록; 상기 실린더블록의 전방에 설치되며, 회전축 및 사판을 수용하는 사판실이 내부에 형성된 전방하우징; 상기 실린더블록의 후방에 설치되며, 냉매가 흡입 및 압축되는 흡입실과 토출실이 형성된 후방하우징; 및 상기 피스톤의 왕복거리를 측정하는 갭센서를 포함하는 사판식 압축기를 제공한다.The present invention provides a swash plate type compressor including a cylinder block having a cylinder bore in which a piston is reciprocally installed; a front housing installed at the front of the cylinder block and having a swash plate room formed therein for accommodating a rotating shaft and a swash plate; a rear housing installed at the rear of the cylinder block and having a suction room and a discharge room formed therein in which refrigerant is suctioned and compressed; and a gap sensor for measuring the reciprocating distance of the piston.
상기 갭센서는, 상기 전방하우징의 외주면에 설치되며, 상기 피스톤의 전후 왕복거리를 측정한다.The above gap sensor is installed on the outer surface of the front housing and measures the forward and backward reciprocating distance of the piston.
본 발명에 따른 사판식 압축기는, 상기 흡입실에 설치되며, 상기 흡입실의 냉매 압력을 측정하는 흡입압력센서를 더 포함한다.The swash plate compressor according to the present invention further includes a suction pressure sensor installed in the suction chamber and measuring the refrigerant pressure of the suction chamber.
본 발명에 따른 사판식 압축기는, 상기 갭센서로부터 측정값에 관한 정보를 전달받으며, 전달받은 정보에 기초하여 상기 실린더보어에서 상기 피스톤에 의해 압축되어 토출되는 냉매의 토출량을 산출하는 제어부를 더 포함한다.The swash plate compressor according to the present invention further includes a control unit that receives information on a measurement value from the gap sensor and calculates the discharge amount of refrigerant compressed and discharged by the piston in the cylinder bore based on the received information.
상기 제어부는, 하기의 [수학식 1]에 기초하여 냉매의 토출량을 산출한다.The above control unit calculates the discharge amount of refrigerant based on the following [Mathematical Formula 1].
[수학식 1][Mathematical formula 1]
여기서, 는 냉매의 토출량, 는 피스톤의 지름, 는 피스톤의 각 중심을 이은 선의 길이, 는 회전축에 대한 사판의 경사각, 는 회전축의 회전각, 는 피스톤의 상사점에서의 실린더보어의 잔여 체적을 나타낸다.Here, is the discharge amount of refrigerant, is the diameter of the piston, is the length of the line connecting the centers of the pistons, is the inclination angle of the plate with respect to the axis of rotation, is the rotation angle of the rotation axis, represents the residual volume of the cylinder bore at the top dead center of the piston.
본 발명에 따른 사판식 압축기는, 상기 갭센서와 흡입압력센서로부터 측정값에 관한 정보를 전달받으며, 전달받은 정보에 기초하여 상기 사판의 토크를 측정하는 제어부를 더 포함한다.The swash plate type compressor according to the present invention further includes a control unit that receives information on measured values from the gap sensor and the suction pressure sensor, and measures the torque of the swash plate based on the received information.
본 발명에 따른 사판식 압축기에 의하면, 갭센서에 의해 측정된 피스톤의 왕복거리와, 흡입압력센서에 의해 측정된 흡입실의 냉매 압력값에 기초하여 압축기의 토크를 산출함으로써, 종래와 같이 많은 수의 부품을 구비하지 않고도 압축기의 토크를 계산할 수 있으며, 피스톤의 거동을 직접 측정함으로써 ±1Nm 수준의 정밀한 토크값의 계산이 가능하게 된다. 또한, 본 발명에 의하면, 차량별/엔진별/압축기 사양에 무관하게 압축기 토크의 튜닝을 간소화할 수 있으며, 불필요한 토크의 보상을 간소화하여 차량의 연비 및 승차감을 개선할 수 있다.According to the swash plate compressor of the present invention, the torque of the compressor can be calculated based on the reciprocating distance of the piston measured by the gap sensor and the refrigerant pressure value of the suction chamber measured by the suction pressure sensor, thereby enabling the calculation of the torque of the compressor without having a large number of parts as in the past, and calculating a precise torque value of ±1 Nm level by directly measuring the behavior of the piston is possible. In addition, according to the present invention, the tuning of the compressor torque can be simplified regardless of the vehicle/engine/compressor specifications, and the compensation of unnecessary torque can be simplified to improve the fuel efficiency and ride comfort of the vehicle.
도 1은 본 발명에 따른 사판식 압축기를 나타낸 도면이다.
도 2는 도 1에 도시된 회전축, 사판, 피스톤 및 실린더헤드를 나타낸 도면이다.
도 3은 사판의 경사각 별 흡입실의 냉매 압력에 따른 사판식 압축기의 토크 변화를 나타낸 그래프이다.Figure 1 is a drawing showing a swash plate compressor according to the present invention.
Figure 2 is a drawing showing the rotating shaft, swash plate, piston, and cylinder head shown in Figure 1.
Figure 3 is a graph showing the change in torque of a swash plate compressor according to the refrigerant pressure in the suction chamber at different inclination angles of the swash plate.
본 발명은 도면에 도시된 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 청구범위의 기술적 사상에 의하여 정해져야 할 것이다.Although the present invention has been described with reference to the embodiments shown in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the appended claims.
도 1 및 도 2를 참조하면, 본 발명에 따른 사판식 압축기(100)는, 실린더블록(110), 전방하우징(120), 후방하우징(130), 갭센서(140), 흡입압력센서(150), 제어부(160)를 포함한다.Referring to FIGS. 1 and 2, a swash plate compressor (100) according to the present invention includes a cylinder block (110), a front housing (120), a rear housing (130), a gap sensor (140), a suction pressure sensor (150), and a control unit (160).
상기 실린더블록(110)은, 복수개의 실린더보어(111)가 원주방향을 따라 배치되며, 상기 전방하우징(120)에 설치되는 회전축(122)의 후단이 회전 가능하게 삽입된다. 그리고 상기 복수개의 실린더보어(111)에는, 복수개의 피스톤(112)이 각각 전후로 왕복 가능하게 삽입된다.The above cylinder block (110) has a plurality of cylinder bores (111) arranged along the circumferential direction, and the rear end of a rotary shaft (122) installed in the front housing (120) is rotatably inserted. In addition, a plurality of pistons (112) are inserted into the plurality of cylinder bores (111) so as to be reciprocated back and forth, respectively.
상기 전방하우징(120)은, 상기 실린더블록(110)의 전방에 설치되며, 내부에 사판실(121)이 형성된다. 상기 사판실(121)에는 회전축(122)과 사판(123)이 설치된다. 상기 회전축(122)은, 전단이 풀리와 결합되며 후단이 상기 실린더블록(110)에 삽입된다. 그리고 상기 회전축(122)은, 상기 풀리로부터 전달받은 힘에 의해 회전한다. 상기 사판(123)은, 상기 회전축(122)에 경사지게 결합된다. 그리고 상기 사판(123)의 반경방향 외측 단부에는, 상기 복수개의 피스톤(112)이 각각 결합된다. 따라서 상기 회전축(122)에 의해 상기 사판(123)이 회전하는 경우, 상기 피스톤(112)은 상기 사판(123)의 회전에 따라 전후로 왕복운동을 하게 된다. 그리고 상기 피스톤(112)의 왕복 운동에 따라, 상기 실린더보어(111)로 흡입된 냉매는 상기 피스톤(112)에 의해 압축된 후 외부로 토출된다.The front housing (120) is installed in front of the cylinder block (110) and has a swash plate room (121) formed therein. A rotational shaft (122) and a swash plate (123) are installed in the swash plate room (121). The front end of the rotational shaft (122) is coupled to a pulley and the rear end is inserted into the cylinder block (110). The rotational shaft (122) rotates by force transmitted from the pulley. The swash plate (123) is coupled to the rotational shaft (122) at an angle. The plurality of pistons (112) are respectively coupled to the radially outer ends of the swash plate (123). Therefore, when the swash plate (123) rotates by the rotational shaft (122), the piston (112) reciprocates back and forth according to the rotation of the swash plate (123). And according to the reciprocating motion of the piston (112), the refrigerant sucked into the cylinder bore (111) is compressed by the piston (112) and then discharged to the outside.
상기 후방하우징(130)은, 상기 실린더블록(110)의 후방에 설치된다. 그리고 상기 후방하우징(130)은, 냉매가 흡입 및 토출되는 흡입실(131)과 토출실(132)이 형성된다. 외부로부터 상기 흡입실(131)로 유입된 냉매는, 상기 실린더보어(111)로 유입되어 상기 피스톤(112)에 의해 압축된다. 그리고 상기 실린더보어(111)에서 압축된 냉매는, 상기 토출실(132)을 통해 외부로 토출된다.The rear housing (130) is installed at the rear of the cylinder block (110). In addition, the rear housing (130) is formed with a suction chamber (131) and a discharge chamber (132) in which refrigerant is sucked and discharged. Refrigerant flowing into the suction chamber (131) from the outside flows into the cylinder bore (111) and is compressed by the piston (112). In addition, the refrigerant compressed in the cylinder bore (111) is discharged to the outside through the discharge chamber (132).
상기 갭센서(140)는, 상기 전방하우징(120)의 외주면에 설치되며, 상기 피스톤(112)의 전후방향의 왕복거리를 측정한다. 그리고 상기 갭센서(140)는, 측정된 정보를 상기 제어부(160)로 전달한다.The gap sensor (140) is installed on the outer surface of the front housing (120) and measures the forward and backward reciprocating distance of the piston (112). Then, the gap sensor (140) transmits the measured information to the control unit (160).
상기 흡입압력센서(150)는, 상기 흡입실(131)에 설치되며, 상기 흡입실(131)의 냉매 압력(이하, Ps압력이라 한다)을 측정하다. 그리고 상기 흡입압력센서(150)는, 측정된 정보를 상기 흡입실(131)로 전달한다.The above suction pressure sensor (150) is installed in the suction room (131) and measures the refrigerant pressure (hereinafter referred to as Ps pressure) of the suction room (131). Then, the suction pressure sensor (150) transmits the measured information to the suction room (131).
상기 제어부(160)는, 상기 갭센서(140)와 상기 흡입압력센서(150)로부터 각각 측정값에 관한 정보를 전달받는다. 그리고 상기 제어부(160)는, 측정받은 정보에 기초하여 냉매의 토출량 및 압축기의 토크를 계산한다.The above control unit (160) receives information on measured values from the gap sensor (140) and the suction pressure sensor (150), respectively. Then, the control unit (160) calculates the discharge amount of refrigerant and the torque of the compressor based on the measured information.
도 2를 참조하면, 상기 제어부(160)는, 상기 갭센서(140)가 측정한 정보에 기초하여, 상기 실린더보어(111)에서 상기 피스톤(112)에 의해 압축되어 토출되는 냉매의 토출량을, 하기의 [수학식 1]에 기초하여 산출한다.Referring to FIG. 2, the control unit (160) calculates the discharge amount of refrigerant compressed and discharged by the piston (112) from the cylinder bore (111) based on the information measured by the gap sensor (140), based on the following [Mathematical Formula 1].
[수학식 1][Mathematical formula 1]
여기서, 는 냉매의 토출량, 는 피스톤의 지름, 는 피스톤의 각 중심을 이은 선의 길이, 는 회전축에 대한 사판의 경사각, 는 회전축의 회전각, 는 피스톤의 상사점에서의 실린더보어의 잔여 체적을 나타낸다. 이때, 사판(123)의 경사각()은, 도 2에 도시된 바와 같이 회전축(122)에 수직인 가상의 평면에 대한 상기 사판(123)의 각을 의미한다.Here, is the discharge amount of refrigerant, is the diameter of the piston, is the length of the line connecting the centers of the pistons, is the inclination angle of the plate with respect to the axis of rotation, is the rotation angle of the rotation axis, represents the residual volume of the cylinder bore at the top dead center of the piston. At this time, the inclination angle of the swash plate (123) ) means the angle of the swash plate (123) with respect to an imaginary plane perpendicular to the rotation axis (122), as illustrated in FIG. 2.
Ps압력에 따라 상기 사판(123)의 경사각이 결정되면, 상기 회전축(122)의 회전에 따라 상기 피스톤(112)은 전후로 왕복 운동을 하게 되고, 상기 피스톤(112)의 위치에 따라 상기 실린더보어(111)의 체적은 바뀌게 된다.When the inclination angle of the above-mentioned swash plate (123) is determined according to the Ps pressure, the piston (112) reciprocates back and forth according to the rotation of the above-mentioned rotary shaft (122), and the volume of the above-mentioned cylinder bore (111) changes according to the position of the above-mentioned piston (112).
상기 사판(123)의 경사각()과 상기 갭센서(140)의 출력은 서로 비례관계에 있다. 따라서 상기 피스톤(112)의 거동을 파악하면, 즉 상기 피스톤(112)의 전후 왕복거리를 측정하면, 상기 제어부(160)는 이를 통해 상기 사판(123)의 경사각()을 알 수 있고, 이때의 경사각()을 통해 상기 실린더보어(111)의 체적을 알 수 있다.The inclination angle of the above plate (123) ) and the output of the gap sensor (140) are proportional to each other. Therefore, if the behavior of the piston (112) is identified, that is, the forward and backward reciprocating distance of the piston (112) is measured, the control unit (160) can use this to determine the inclination angle of the swash plate (123). ) can be known, and the inclination angle at this time ( ) can be used to determine the volume of the cylinder bore (111).
즉, 상기 수학식 1에서, , , 는 주어진 설계값에 해당하며, 는 상기 피스톤(112)의 기통 수에 따라서 설정되는 값에 해당하므로, 상기 제어부(160)는, 상기 갭센서(140)가 측정한 피스톤(112)의 전후 왕복거리에 기초하여 사판(123)의 경사각()을 산출하고, 기타 다른 변수들을 이용하여 값을 계산할 수 있게 된다.That is, in the above mathematical expression 1, , , corresponds to the given design value, Since the value is set according to the number of cylinders of the piston (112), the control unit (160) sets the inclination angle of the swash plate (123) based on the forward and backward reciprocating distance of the piston (112) measured by the gap sensor (140). ) and using other variables. It becomes possible to calculate the value.
또한, 상기 제어부(160)는, 상기 갭센서(140)와 상기 흡입압력센서(150)가 각각 측정한 측정값에 관한 정보에 기초하여, 상기 사판(123)의 토크를 산출한다.In addition, the control unit (160) calculates the torque of the swash plate (123) based on information about the measurement values measured by the gap sensor (140) and the suction pressure sensor (150).
도 3을 참조하면, 압축기의 토크는, Ps압력과 사판(123)의 경사각()에 의해 결정된다. 따라서 상기 갭센서(140)가 측정한 피스톤(112)의 전후 왕복거리와, 상기 흡입압력센서(150)가 측정한 Ps압력에 관한 정보에 기초하여, 상기 제어부(160)는 압축기의 토크를 산출할 수 있게 된다.Referring to Fig. 3, the torque of the compressor depends on the Ps pressure and the inclination angle of the swash plate (123). ) is determined. Therefore, based on the information about the forward and backward reciprocating distance of the piston (112) measured by the gap sensor (140) and the Ps pressure measured by the suction pressure sensor (150), the control unit (160) can calculate the torque of the compressor.
이상에서 살펴 본 바와 같이, 본 발명에 따른 사판식 압축기(100)에 의하면, 갭센서(140)에 의해 측정된 피스톤(112)의 왕복거리와, 흡입압력센서(150)에 의해 측정된 흡입실(131)의 냉매 압력(Ps압력)값에 기초하여 압축기의 토크를 산출함으로써, 종래와 같이 많은 수의 부품을 구비하지 않고도 압축기의 토크를 계산할 수 있으며, 피스톤(112)의 거동을 직접 측정함으로써 ±1Nm 수준의 정밀한 토크값의 계산이 가능하게 된다. 또한, 본 발명에 의하면, 차량별/엔진별/압축기 사양에 무관하게 압축기 토크의 튜닝을 간소화할 수 있으며, 불필요한 토크의 보상을 간소화하여 차량의 연비 및 승차감을 개선할 수 있다.As described above, according to the swash plate compressor (100) according to the present invention, the torque of the compressor is calculated based on the reciprocating distance of the piston (112) measured by the gap sensor (140) and the refrigerant pressure (Ps pressure) of the suction chamber (131) measured by the suction pressure sensor (150), thereby enabling the calculation of the torque of the compressor without having to have a large number of parts as in the past, and enabling the calculation of a precise torque value of ±1 Nm level by directly measuring the behavior of the piston (112). In addition, according to the present invention, the tuning of the compressor torque can be simplified regardless of the vehicle/engine/compressor specifications, and the compensation of unnecessary torque can be simplified to improve the fuel efficiency and ride comfort of the vehicle.
100 : 사판식 압축기 110 : 실린더블록
120 : 전방하우징 130 : 후방하우징
140 : 갭센서 150 : 흡입압력센서
160 : 제어부100: Swash plate compressor 110: Cylinder block
120: Front housing 130: Rear housing
140: Gap sensor 150: Suction pressure sensor
160 : Control Unit
Claims (6)
상기 실린더블록의 전방에 설치되며, 회전축 및 사판을 수용하는 사판실이 내부에 형성된 전방하우징;
상기 실린더블록의 후방에 설치되며, 냉매가 흡입 및 압축되는 흡입실과 토출실이 형성된 후방하우징;
상기 전방하우징의 외주면에 설치되며, 상기 피스톤의 전후 왕복거리를 측정하는 갭센서; 및
상기 갭센서로부터 측정값에 관한 정보를 전달받으며, 전달받은 정보에 기초하여 상기 사판의 경사각을 판단하고, 상기 실린더보어에서 상기 피스톤에 의해 압축되어 토출되는 냉매의 토출량을 산출하는 제어부를 포함하는 사판식 압축기.
A cylinder block having a cylinder bore in which a piston is installed so as to reciprocate;
A front housing installed at the front of the cylinder block and having a swash plate room formed inside to accommodate a rotating shaft and a swash plate;
A rear housing installed at the rear of the cylinder block and having a suction chamber and a discharge chamber formed where refrigerant is suctioned and compressed;
A gap sensor installed on the outer surface of the front housing and measuring the forward and backward reciprocating distance of the piston; and
A swash plate type compressor including a control unit that receives information about a measurement value from the gap sensor, determines an inclination angle of the swash plate based on the received information, and calculates the discharge amount of refrigerant compressed and discharged by the piston in the cylinder bore.
상기 흡입실에 설치되며, 상기 흡입실의 냉매 압력을 측정하는 흡입압력센서를 더 포함하는 사판식 압축기.In claim 1,
A swash plate compressor further comprising a suction pressure sensor installed in the suction chamber and measuring the refrigerant pressure of the suction chamber.
상기 제어부는, 하기의 [수학식 1]에 기초하여 냉매의 토출량을 산출하는 사판식 압축기.
[수학식 1]
여기서, 는 냉매의 토출량, 는 피스톤의 지름, 는 피스톤의 각 중심을 이은 선의 길이, 는 회전축에 대한 사판의 경사각, 는 회전축의 회전각, 는 피스톤의 상사점에서의 실린더보어의 잔여 체적을 나타낸다.In claim 1,
The above control unit is a swash plate type compressor that calculates the discharge amount of refrigerant based on the following [Mathematical Formula 1].
[Mathematical formula 1]
Here, is the discharge amount of refrigerant, is the diameter of the piston, is the length of the line connecting the centers of the pistons, is the inclination angle of the plate with respect to the axis of rotation, is the rotation angle of the rotation axis, represents the residual volume of the cylinder bore at the top dead center of the piston.
상기 제어부는,
상기 갭센서와 흡입압력센서로부터 측정값에 관한 정보를 전달받으며, 전달받은 정보에 기초하여 상기 사판의 토크를 측정하는 사판식 압축기.In claim 3,
The above control unit,
A swash plate type compressor that receives information about measurement values from the gap sensor and suction pressure sensor and measures the torque of the swash plate based on the received information.
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