KR940018635A - Refrigeration cycle unit - Google Patents

Refrigeration cycle unit Download PDF

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Publication number
KR940018635A
KR940018635A KR1019930032344A KR930032344A KR940018635A KR 940018635 A KR940018635 A KR 940018635A KR 1019930032344 A KR1019930032344 A KR 1019930032344A KR 930032344 A KR930032344 A KR 930032344A KR 940018635 A KR940018635 A KR 940018635A
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KR
South Korea
Prior art keywords
value
expansion valve
electromagnetic expansion
detected
maximum value
Prior art date
Application number
KR1019930032344A
Other languages
Korean (ko)
Inventor
토루 구보
요시노부 후지타
다카유키 캄베
Original Assignee
사토 후미오
가부시키가이샤 도시바
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Publication of KR940018635A publication Critical patent/KR940018635A/en

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Classifications

    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
    • 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
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06—Details of flow restrictors or expansion valves
    • F25B2341/068—Expansion valves combined with a sensor
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/15—Hunting, i.e. oscillation of controlled refrigeration variables reaching undesirable values
    • 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
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • 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
    • F25B2600/00—Control issues
    • F25B2600/21—Refrigerant outlet evaporator temperature
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

본 발명은 과열도를 설정치로 신속하게 마무리시킬 수 있고, 항상 안정된 운전이 가능한 냉동사이클 장치를 제공하는 냉동사이클 장치에 관한것으로, 설정치 SHs와 과열도 SH와의 차 △SH의 최대치 △SHmax를 순서대로 검출하는 동시에 그 최대치 △SHmax의 감소 방향의 변화량을 검출하고, 그 변화량이 설정치 이하이고 또한 그때의 최대치 △SHmax가 소정치 이상의 상태에 있는지 여부를 판정하고, 그 판정이 소정회수 연속해서 만족될때 전자 팽창밸브(11)(21)에 대한 개도 제어치를 감소 방향으로 보정하는 것을 특징으로 한다.The present invention relates to a refrigeration cycle apparatus that provides a refrigeration cycle apparatus capable of quickly finishing the superheat degree to a set value and enabling stable operation at all times, wherein the maximum value ΔSH max of the difference ΔSH between the set value SH s and the superheat degree SH is determined. sequence detected at the same time detecting the amount of change in the decreasing direction of its maximum value △ SH max, and that, as is not more than the change in the set point Additionally, the maximum value △ SH max at that time determines whether the state more than the prescribed value, the judgment is a predetermined number of consecutive And the opening degree control value for the electromagnetic expansion valves (11) (21) is corrected in the decreasing direction when satisfied.

Description

냉동 사이클 장치Refrigeration cycle unit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1 도는 본 발명의 제 1 실시예의 냉동 사이클의 구성도, 제 2 도는 제 1 실시예에 있어서 제어회로의 구성도, 제 5 도는 제 1 실시예의 작용을 설명하기 위한 플로우챠트.1 is a configuration diagram of a refrigerating cycle according to a first embodiment of the present invention, FIG. 2 is a configuration diagram of a control circuit in the first embodiment, and FIG. 5 is a flowchart for explaining the operation of the first embodiment.

Claims (3)

압축기, 응축기, 전자 팽창밸브, 증발기를 접속한 냉동 사이틀을 구비하고, 증발기에서의 냉매의 과열도가 설정치가 되도록 전자 팽창 밸브의 개도를 제어하는 냉동사이클장치에 있어서, 상기 설정치와 상기 과열도와의 차의 최대치를 순차적으로 검출하는 제 1 검출수단과, 이 제 1 검출수단에서 검출되는 최대치가 감소하는 방향으로의 변화량을 검출하는 제 2 검출수단과, 이 제 2 검출수단에서 검출되는 변화량이 설정치 이하이고 또한 상기 제 1 검출되는 최대치가 소정치이상의 상태에 있는지 여부를 판정하는 판정수단과 이 판정수단의 판정이 소정회수 연속해서 만족될때 상기 전자 팽창 밸브에 대한 개도제어치를 감소 방향으로 보정 하는 보정수단을 구비한 것을 특징으로 하는 냉동사이클 장치.A refrigeration cycle apparatus comprising a refrigeration cycle connected to a compressor, a condenser, an electromagnetic expansion valve, and an evaporator, and controlling the opening degree of the electromagnetic expansion valve so that the superheat degree of the refrigerant in the evaporator is a set value. First detection means for sequentially detecting a maximum value of the difference, second detection means for detecting a change amount in a direction in which the maximum value detected by the first detection means decreases, and a change amount detected by the second detection means is a set value. Correction means for determining whether the first detected maximum value is in a state equal to or greater than a predetermined value and correction for correcting the opening control value for the electromagnetic expansion valve in the decreasing direction when the determination of the determination means is satisfied for a predetermined number of times consecutively Refrigeration cycle apparatus comprising a means. 압축기, 응축기, 전자팽창밸브 및 증발기를 접속한 냉동사이클을 구비하고, 증발기에서의 냉매의 과열도가 설정치가 되도록 전자 팽창 밸브의 개도를 제어하는 냉동 사이클 장치에 있어서, 상기 설정치와 상기 과열도와의 차 및 그 최대치를 순차적으로 검출하는 제 1 검출수단과, 이 제 1 검출수단에서 검출되는 최대치의 감소방향의 변화량을 제 2 검출수단과 이 제 2 검출수단에서 검출되는 변화량이 설정치 이하이고, 또 상기 제 1 검출수단에서 검출되는 최대치가 소정치 이상의 상황에 있는지 여부를 판정하는 제 1 판정수단과, 이 제 1 판정수단의 판정이 소정회수 연속해서 만족될때, 상기 전자팽창밸브에 대한 개도제어치를 감소방향으로 보정하는 제 1 보정수단과, 상기 제 1 검출수단에서 검출되는 값이 정치이상의 상태를 일정시간 유지했는지 여부를 판정하는 제 2 판정수단과, 이 제 2 판정수단의 판정이 만족될때 상기 전자 팽창밸브에 대하는 개도 제어치를 증대방향으로 보정하는 제 2 보정수단을 구비한 것을 특징으로 하는 냉동사이클장치.A refrigeration cycle apparatus comprising a refrigeration cycle connected to a compressor, a condenser, an electromagnetic expansion valve, and an evaporator, wherein the refrigerating cycle apparatus controls the opening degree of the electromagnetic expansion valve so that the superheat degree of the refrigerant in the evaporator is a set value. The first detection means for sequentially detecting the difference and its maximum value, and the amount of change in the direction of reduction of the maximum value detected by the first detection means is less than or equal to the set value; First determination means for determining whether the maximum value detected by the first detection means is in a state of a predetermined value or more, and an opening control value for the electromagnetic expansion valve when the determination of the first determination means is satisfied a predetermined number of times consecutively. The first correction means for correcting in the decreasing direction and whether the value detected by the first detection means has maintained a state of stationary abnormality for a predetermined time; And a second correction means for correcting the wealth, and second correction means for correcting the opening degree control value for the electromagnetic expansion valve in the increasing direction when the determination of the second determination means is satisfied. 제 2 항에 있어서, 상기 압축기의 운전주파수가 변화했을때, 상기 제 1 검출수단에서 검출되는 최대치와, 그 검출의 소정시간후에 검출되는 차와의 차인 과열도 변화량을 검출할 제3검출수단과, 이 파열도 변화량 및 상기 제 1 검출수단에서 검출 되는 차에서 상기 과열도가 설정치에 도달하기까지의 시간을 예측하는 예측수단과, 이 예측시간이 소정치 이상인때에 상기 전자 팽창 밸브에 대한 개도제어치를 증대방향으로 보정하고 예측시간이 소정치 이하일때, 상기 전자 팽창 밸브에 대한 개도 제어치를 감소방향으로 보정하는 제 3 보정수단을 설치한 것을 특징으로 하는 냉동사이클장치.3. The apparatus according to claim 2, further comprising: third detecting means for detecting an amount of change in superheat degree that is a difference between a maximum value detected by said first detecting means and a difference detected after a predetermined time when said operating frequency of said compressor changes; Predicting means for predicting the time from the burst degree change and the difference detected by the first detecting means to reach the set value, and the opening degree to the electromagnetic expansion valve when the predicted time is equal to or larger than a predetermined value. And a third correction means for correcting the control value in the increasing direction and correcting the opening degree control value for the electromagnetic expansion valve in the decreasing direction when the predicted time is less than or equal to the predetermined value. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930032344A 1993-01-27 1993-12-31 Refrigeration cycle unit KR940018635A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1161893 1993-01-27
JP93-11618 1993-01-27
JP05242506A JP3117339B2 (en) 1993-01-27 1993-09-29 Refrigeration cycle device
JP93-242506 1993-09-29

Publications (1)

Publication Number Publication Date
KR940018635A true KR940018635A (en) 1994-08-18

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Application Number Title Priority Date Filing Date
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JP (1) JP3117339B2 (en)
KR (1) KR940018635A (en)
CN (1) CN1071882C (en)
GB (1) GB2274930B (en)
TW (1) TW228024B (en)

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KR100366449B1 (en) * 2000-10-12 2002-12-31 주식회사 엘지이아이 Control Device and Control Method of 3 way valve

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US7201008B2 (en) * 2003-05-05 2007-04-10 Carrier Corporation Vapor compression system performance enhancement and discharge temperature reduction in the unloaded mode of operation
KR100579564B1 (en) * 2004-04-12 2006-05-15 엘지전자 주식회사 LEV control method of cooling cycle apparatus
KR100664085B1 (en) * 2005-11-24 2007-01-03 엘지전자 주식회사 Apparatus for controlling air conditioner
JP4935403B2 (en) * 2007-02-14 2012-05-23 富士電機株式会社 Refrigerant flow control device
US7784296B2 (en) * 2007-03-08 2010-08-31 Nordyne Inc. System and method for controlling an air conditioner or heat pump
JP4905271B2 (en) * 2007-06-29 2012-03-28 ダイキン工業株式会社 Refrigeration equipment
CN101852523B (en) * 2009-03-31 2012-01-11 海尔集团公司 Superheat degree control method and system for refrigeration circulation system
JP6076583B2 (en) * 2011-01-19 2017-02-08 三菱重工業株式会社 heat pump
US9746224B2 (en) * 2012-11-21 2017-08-29 Liebert Corporation Expansion valve setpoint control systems and methods
US10174977B2 (en) 2012-11-21 2019-01-08 Vertiv Corporation Apparatus and method for subcooling control based on superheat setpoint control
CN104110799B (en) * 2013-05-30 2016-12-07 广东美的制冷设备有限公司 The integrated control method of air-conditioner electric expansion valve and circuit
CN103982987B (en) * 2014-05-07 2016-08-31 广东美的暖通设备有限公司 Prevent the method and system of coolant bias current, multi-connected air conditioner in multi-connected air conditioner
DK201470338A1 (en) * 2014-06-06 2015-05-11 Danfoss As A method for detecting instability in a refrigeration system
CN106403425B (en) * 2015-07-27 2019-04-12 青岛海尔空调电子有限公司 A kind of control method for electronic expansion valve of water chiller
JP6468300B2 (en) * 2017-02-13 2019-02-13 株式会社富士通ゼネラル Air conditioner
CN107401811A (en) * 2017-07-26 2017-11-28 日照职业技术学院 Air conditioner defrosting system for automobile
CN110285618B (en) * 2019-06-27 2020-03-27 山东建筑大学 Frequency conversion control device and control method of heat pump

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Also Published As

Publication number Publication date
GB2274930B (en) 1996-02-07
CN1071882C (en) 2001-09-26
GB9326573D0 (en) 1994-03-02
TW228024B (en) 1994-08-11
CN1093792A (en) 1994-10-19
GB2274930A (en) 1994-08-10
JPH06281234A (en) 1994-10-07
JP3117339B2 (en) 2000-12-11

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