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KR100819617B1 - Air conditioner compressor with soft starter - Google Patents

Air conditioner compressor with soft starter Download PDF

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Publication number
KR100819617B1
KR100819617B1 KR1020060137970A KR20060137970A KR100819617B1 KR 100819617 B1 KR100819617 B1 KR 100819617B1 KR 1020060137970 A KR1020060137970 A KR 1020060137970A KR 20060137970 A KR20060137970 A KR 20060137970A KR 100819617 B1 KR100819617 B1 KR 100819617B1
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South Korea
Prior art keywords
capacitor
soft starter
compressor
air conditioner
relay
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Korean (ko)
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전영미
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캐리어 주식회사
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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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type
    • 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
    • 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
    • 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
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor And Converter Starters (AREA)

Abstract

An air conditioner compressor having a soft starter is provided to achieve the effect of a capacitor start capacitor run motor by using a soft starter, and to select an optimum operation capacitor since the operation capacitor does not need to serve as a start capacitor. An air conditioner compressor includes a soft starter(60) connected to an operation capacitor(64) in parallel for lowering an initiating current. The soft starter includes a relay(50) connected to an end of the operation capacitor at an end, and a start capacitor(62) connected to the other end of the operation capacitor at an end, wherein the other end of the relay is connected to the other end of the start capacitor. The relay shuts down the start capacitor when a motor speed of the compressor reaches 60-80% of the rated speed thereof.

Description

소프트 스타터를 갖는 에어콘 압축기{Airconditioner compressor with softstarter}Air conditioner compressor with softstarter

도 1은 종래의 에어콘에 적용되는 압축기의 배선도이고, 1 is a wiring diagram of a compressor applied to a conventional air conditioner,

도 2는 도 1에 도시된 고정-분할형 캐패시터 모터의 회로도,FIG. 2 is a circuit diagram of the fixed-division capacitor motor shown in FIG. 1;

도 3은 도 2에 도시된 고정-분할형 캐패시터 모터의 토오크-속도 그래프,3 is a torque-speed graph of the fixed-partition capacitor motor shown in FIG.

도 4는 본 발명에 따른 에어콘 압축기와 소프트 스타터의 회로도, 4 is a circuit diagram of an air conditioner compressor and a soft starter according to the present invention;

도 5는 도 4에 도시된 모터와 주변회로의 개략적인 회로도,5 is a schematic circuit diagram of a motor and a peripheral circuit shown in FIG. 4;

도 6은 본 발명을 적용한 압축기 모터의 토오크-속도 그래프,6 is a torque-speed graph of a compressor motor to which the present invention is applied;

도 7은 본 발명의 또 다른 실시예로서 정특성 써미스터를 이용한 에어콘 압축기의 배선도이다.7 is a wiring diagram of an air conditioner compressor using a static thermistor as still another embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 압축기,10: compressor,

12 : 운전,12: driving,

14 : 스타트,14: start,

16 : 공통,16: common,

18 : 운전 캐패시터,18: driving capacitor,

20 : 스위치,20: switch,

32 : 주권선,32: sovereignty,

34 : 보조권선,34: auxiliary winding,

40 : 스위치, 40: switch,

50 : 릴레이,50: relay,

60 : 소프트 스타터,60: soft starter,

62 : 스타트 캐패시터,62: start capacitor,

64 : 운전 캐패시터,64: driving capacitor,

70 : 압축기, 70: compressor,

72 : 운전,72: driving,

74 : 스타트,74: start,

76 : 공통,76: common,

80 : 주권선,80: sovereignty,

82 : 보조권선, 82: auxiliary winding,

90 : 스위치,90: switch,

92 : 정특성 써미스터,92: static thermistor,

94 : 운전 캐패시터,94: driving capacitor,

95 : 압축기,95: compressor,

96 : 운전,96: driving,

97 : 스타트,97: start,

99 : 공통.99: common.

본 발명은 에어콘 압축기의 기동에 관한 것으로서, 보다 상세하게는 소프트 스타터를 갖는 에어콘 압축기에 관한 것이다. The present invention relates to the start of an air conditioner compressor, and more particularly, to an air conditioner having a soft starter.

도 1은 종래의 에어콘에 적용되는 압축기의 배선도이고이다. 도 1에 도시된 바와 같이 압축기(10)는 운전(12), 스타트(14) 및 공통(16)을 갖고 있고, 운전(12)과 스타트(14) 측에는 운전 캐패시터(18)가 병렬로 연결되어 있다. 즉, 에어콘에 적용되는 압축기는 기동전류에 대한 제한이 생기면서 기동전류를 낮추기 위해 운전 캐패시터(18)를 사용한다. 1 is a wiring diagram of a compressor applied to a conventional air conditioner. As shown in FIG. 1, the compressor 10 has an operation 12, a start 14, and a common 16, and an operation capacitor 18 is connected to the operation 12 and the start 14 in parallel. have. That is, the compressor applied to the air conditioner uses the operation capacitor 18 to lower the starting current while the limitation on the starting current occurs.

그리고, 압축기(10)의 모터로서 고정-분할형 캐패시터 모터(Perminent-Split Capacitor motor, PSC)를 사용한다. 도 2는 도 1에 도시된 고정-분할형 캐패시터 모터의 회로도이다. 스타트(14) 권선측에 직렬로 연결된 운전 캐패시터(18)로 인해 기동할 때, 뿐만 아니라 운전속도에 도달할 때까지 스타트(14) 권선이 보조권선(34)의 역할을 하게 된다. As the motor of the compressor 10, a fixed-split capacitor motor (PSC) is used. FIG. 2 is a circuit diagram of the fixed-division capacitor motor shown in FIG. 1. The start 14 winding acts as an auxiliary winding 34 when starting due to the operating capacitor 18 connected in series to the start 14 winding side, as well as until the operating speed is reached.

도 3은 도 2에 도시된 고정-분할형 캐패시터 모터의 토오크-속도 그래프이다. 도 3에 도시된 바와 같이, PSC 모터를 적용하고 있기 때문에 기동 토오크가 낮다. 따라서, 기동성을 향상시키기 위한 기술이 필요할 때가 많지만 운전중 최적 효율을 낼 수 있는 캐패시터의 선정이 어렵다는 어려움이 있다. 3 is a torque-speed graph of the fixed-partition capacitor motor shown in FIG. As shown in Fig. 3, the starting torque is low because the PSC motor is applied. Therefore, there is a need for a technique for improving maneuverability in many cases, but it is difficult to select a capacitor capable of achieving optimum efficiency during operation.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은, 기동전류를 낮추는 소프트 스타터를 사용하여 캐패시터 스타트 캐패시터 운전(Capacitor Start Capacitor Run, CSCR) 모터의 효과를 구현할 수 있는 소프트 스타터를 갖는 에어콘 압축기를 제공하는 것이다.Accordingly, the present invention has been made to solve the above problems, an object of the present invention, by using a soft starter to lower the starting current can implement the effect of the Capacitor Start Capacitor Run (CSCR) motor It is to provide an air conditioner compressor having a soft starter.

본 발명의 그 밖의 목적, 특정한 장점들 및 신규한 특징들은 첨부 도면들과 관련되어 설명되는 이하의 상세한 설명과 바람직한 실시예들로부터 더욱 명확해질 것이다.Other objects, specific advantages and novel features of the invention will become more apparent from the following detailed description and the preferred embodiments described in conjunction with the accompanying drawings.

상기와 같은 본 발명의 목적은, 냉매가스를 압축하는 압축기(70);An object of the present invention as described above, the compressor 70 for compressing the refrigerant gas;

압축기(70)의 운전(72) 측과 스타트(74) 측에 병렬로 연결되는 운전 캐패시터(64); 및An operation capacitor 64 connected in parallel to the operation 72 side and the start 74 side of the compressor 70; And

운전 캐패시터(64)에 병렬로 연결되어 기동전류를 낮추는 소프트 스타터(60);를 포함하는 것을 특징으로 하는 소프트 스타터를 갖는 에어콘 압축기에 의해 달성될 수 있다.It can be achieved by an air conditioner compressor having a soft starter, including; a soft starter 60 connected in parallel to the operation capacitor 64 to lower the starting current.

그리고, 소프트 스타터(60)는, 일단이 상기 운전 캐패시터(64)의 일단에 연결되는 릴레이(50);The soft starter 60 may include: a relay 50 having one end connected to one end of the driving capacitor 64;

일단이 운전 캐패시터(64)의 타단에 연결되는 스타트 캐패시터(62);로 구성되며, A start capacitor 62 having one end connected to the other end of the driving capacitor 64;

릴레이(50)의 타단은 상기 스타트 캐패시터(62)의 타단과 연결될 수 있다.The other end of the relay 50 may be connected to the other end of the start capacitor 62.

아울러, 릴레이(50)는 압축기의 모터가 정격속도의 60% ~ 80%에 도달하였을 때 동작하여 스타트 캐패시터(62)를 차단하는 것이 바람직하다.In addition, the relay 50 preferably operates when the motor of the compressor reaches 60% to 80% of the rated speed to block the start capacitor 62.

그리고, 압축기(70)의 모터는 고정-분할형 캐패시터 모터일 수 있다.In addition, the motor of the compressor 70 may be a fixed-segment capacitor motor.

그리고, 소프트 스타터(60)는 정특성 써미스터(92)일 수도 있다.The soft starter 60 may be a static thermistor 92.

이하에서는 양호한 실시예를 도시한 첨부 도면과 관련하여 본 발명을 상세하게 설명한다.The invention will now be described in detail with reference to the accompanying drawings, in which preferred embodiments are shown.

도 4는 본 발명에 따른 에어콘 압축기와 소프트 스타터의 회로도이고, 도 5는 도 4에 도시된 모터와 주변회로의 개략적인 회로도이다. 도 4 및 도 5에 도시된 바와 같이, 압축기(70)는 고정-분할형 캐패시터 모터(Perminent-Split Capacitor motor, PSC)를 사용한다. 압축기(70)에는 운전(72), 스타트(74) 및 공통(76) 측 권선이 구비된다.4 is a circuit diagram of an air conditioner compressor and a soft starter according to the present invention, and FIG. 5 is a schematic circuit diagram of a motor and a peripheral circuit shown in FIG. 4. As shown in Figs. 4 and 5, the compressor 70 uses a fixed-split capacitor motor (PSC). The compressor 70 is provided with an operation 72, a start 74 and a common 76 side winding.

운전 캐패시터(64)는 스타트(74) 권선과 운전(72) 권선 사이에 병렬로 연결된다. The drive capacitor 64 is connected in parallel between the start 74 winding and the drive 72 winding.

기동전류를 낮추는 소프트 스타터(60)는 운전 캐패시터(64)와 스위치(40) 사이에 병렬로 연결된다. 특히, 릴레이(50)의 일단은 운전 캐패시터(64)의 일단에 연결되고, 타단은 스타트 캐패시터(620)에 연결된다. 스타트 캐패시터(620)의 일단은 운전 캐패시터(64)의 타단에 연결되고, 타단은 릴레이(50)의 타단에 연결된다.The soft starter 60 for lowering the starting current is connected in parallel between the driving capacitor 64 and the switch 40. In particular, one end of the relay 50 is connected to one end of the driving capacitor 64, the other end is connected to the start capacitor 620. One end of the start capacitor 620 is connected to the other end of the driving capacitor 64, and the other end is connected to the other end of the relay 50.

압축기(70)를 기동하였을 때, 정격속도의 약 75%가 되면 릴레이(50)가 동작하여 스타트 캐패시터(62)를 차단하게 된다. 즉, 도 5에 도시된 바와 같이, 운전 캐패시터(64)는 종래의 스타트 캐패시터의 역할을 하지 않아도 되므로 운전 캐패시 터로서의 역할만 하게끔 최적의 캐패시터를 선정할 수 있다.When the compressor 70 is started, the relay 50 operates to cut off the start capacitor 62 when it becomes about 75% of the rated speed. That is, as shown in FIG. 5, the operation capacitor 64 does not have to serve as a conventional start capacitor, so that an optimal capacitor may be selected to serve only as a driving capacitor.

도 6은 본 발명을 적용한 압축기 모터의 토오크-속도 그래프 이다. 도 6에 도시된 바와 같이, 기동 토오크가 수배 증가하게 되므로 기동성이 향상되게 된다.6 is a torque-speed graph of a compressor motor to which the present invention is applied. As shown in Fig. 6, the starting torque is increased several times, so the maneuverability is improved.

도 7은 본 발명의 또 다른 실시예로서 정특성 써미스터를 이용한 에어콘 압축기의 배선도이다. 도 7에 도시된 바와 같이, 고정-분할형 캐패시터 모터를 사용한 압축기의 경우, 기동 토오크를 올려 기동성을 개선하기 위하여 소프트 스타터로서, 정특성 써미스터(Positive Temperature Coefficient Thermistor)(92)를 적용할 수 있다. 이와 같은 변형 실시예로서도 캐패시터 스타트 캐패시터 운전(Capacitor Start Capacitor Run, CSCR) 모터의 동작특성을 얻을 수 있다.7 is a wiring diagram of an air conditioner compressor using a static thermistor as still another embodiment of the present invention. As shown in FIG. 7, in the case of a compressor using a fixed-partition capacitor motor, a positive temperature thermistor 92 may be applied as a soft starter to increase starting torque and improve maneuverability. . As such a modified embodiment, an operation characteristic of a Capacitor Start Capacitor Run (CSCR) motor can be obtained.

따라서, 상기 설명한 바와 같은 본 발명의 일실시예에 의하면, 기동전류를 낮추는 소프트 스타터를 사용하여 캐패시터 스타트 캐패시터 운전(Capacitor Start Capacitor Run, CSCR) 모터의 효과를 구현할 수 있다.Therefore, according to an embodiment of the present invention as described above, it is possible to implement the effect of a Capacitor Start Capacitor Run (CSCR) motor using a soft starter that lowers the starting current.

비록 본 발명이 상기에서 언급한 바람직한 실시예와 관련하여 설명되어졌지만, 본 발명의 요지와 범위로 부터 벗어남이 없이 다른 다양한 수정 및 변형이 가능한 것은 당업자라면 용이하게 인식할 수 있을 것이며, 이러한 변경 및 수정은 모두 첨부된 특허청구의 범위에 속함은 자명하다.Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention. It is obvious that all modifications fall within the scope of the appended claims.

Claims (5)

삭제delete 삭제delete 냉매가스를 압축하는 압축기(70); 상기 압축기(70)의 운전(72) 측과 스타트(74) 측에 병렬로 연결되는 운전 캐패시터(64); 및 상기 운전 캐패시터(64)에 병렬로 연결되어 기동전류를 낮추는 소프트 스타터(60);를 포함하고,A compressor 70 for compressing the refrigerant gas; An operation capacitor 64 connected in parallel to the operation 72 side and the start 74 side of the compressor 70; And a soft starter 60 connected in parallel to the operation capacitor 64 to lower starting current. 상기 소프트 스타터(60)는,The soft starter 60, 일단이 상기 운전 캐패시터(64)의 일단에 연결되는 릴레이(50);A relay 50 having one end connected to one end of the driving capacitor 64; 일단이 상기 운전 캐패시터(64)의 타단에 연결되는 스타트 캐패시터(62);로 구성되며, A start capacitor 62 having one end connected to the other end of the driving capacitor 64; 상기 릴레이(50)의 타단은 상기 스타트 캐패시터(62)의 타단과 연결되고,The other end of the relay 50 is connected to the other end of the start capacitor 62, 상기 릴레이(50)는 상기 압축기의 모터가 정격속도의 60% ~ 80%에 도달하였을 때 동작하여 상기 스타트 캐패시터(62)를 차단하는 것을 특징으로 하는 소프트 스타터를 갖는 에어콘 압축기. The relay (50) is an air conditioner compressor having a soft starter, characterized in that when the motor of the compressor reaches 60% ~ 80% of the rated speed to cut off the start capacitor (62). 삭제delete 삭제delete
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KR101057498B1 (en) 2008-06-19 2011-08-22 송인환 DC motor drive controller
CN102748291A (en) * 2012-07-25 2012-10-24 英凯尔（上海）能源技术有限公司 Energy saver system for air compressor
CN105156312A (en) * 2015-09-15 2015-12-16 珠海格力电器股份有限公司 fixed-frequency compressor starting circuit and starting method
CN110445420A (en) * 2019-07-29 2019-11-12 北京航天发射技术研究所 A kind of control method and control system of alternating current generator clean boot

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JPH06213167A (en) * 1993-01-14 1994-08-02 Sanden Corp Gaseous compressor
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101057498B1 (en) 2008-06-19 2011-08-22 송인환 DC motor drive controller
CN102748291A (en) * 2012-07-25 2012-10-24 英凯尔（上海）能源技术有限公司 Energy saver system for air compressor
CN105156312A (en) * 2015-09-15 2015-12-16 珠海格力电器股份有限公司 fixed-frequency compressor starting circuit and starting method
CN110445420A (en) * 2019-07-29 2019-11-12 北京航天发射技术研究所 A kind of control method and control system of alternating current generator clean boot

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