KR930016736A - Defrost start method and apparatus in refrigerant evaporator - Google Patents

Defrost start method and apparatus in refrigerant evaporator Download PDF

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Publication number
KR930016736A
KR930016736A KR1019920016712A KR920016712A KR930016736A KR 930016736 A KR930016736 A KR 930016736A KR 1019920016712 A KR1019920016712 A KR 1019920016712A KR 920016712 A KR920016712 A KR 920016712A KR 930016736 A KR930016736 A KR 930016736A
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KR
South Korea
Prior art keywords
refrigerant
evaporator
expansion valve
refrigerant evaporator
computer
Prior art date
Application number
KR1019920016712A
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Korean (ko)
Inventor
시게또시 이와끼리
모리히로 아사또
도시아끼 하마자끼
마사또시 도이
고오노스께 우마다
Original Assignee
찌구 사즈시게
닛신 고교 가부시끼 가이샤
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Publication of KR930016736A publication Critical patent/KR930016736A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002Defroster control
    • F25D21/006Defroster control with electronic control circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/006Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2513Expansion valves

Abstract

본 발명은 팽창 밸브 제어 컴퓨터에 의해 팽창 밸브를 제어하고, 최대 밸브 능력이 설정치 이하로 저하된 때 냉매 증발기에의 착상을 검지하여 자동적으로 서리 제거를 개시하고, 서리 제거 개시 기기의 설정에 조작자의 개인차가 생기는 것을 방지하고, 또 착상량에 관계없이 서리 제거를 행하는 것을 방지한다.The present invention controls the expansion valve by the expansion valve control computer, detects the frost on the refrigerant evaporator when the maximum valve capacity is lower than the set value, and automatically starts frost removal, and the setting of the frost removal start device is performed by the operator. An individual difference is prevented from occurring and defrosting is prevented regardless of the amount of implantation.

Description

냉매 증발기에 있어서의 서리 제거 개시 방법 및 장치Defrost start method and apparatus in refrigerant evaporator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 단일 냉각실에 단일 냉매 증발기를 설비한 경우의 개요를 도시한 배관, 배선도, 제2도는 단일 냉각실에 복수의 냉매 증발기를 설비한 경우의 개요를 도시하는 배관, 배선도, 제3도는 복수의 냉각실에 각각 복수의 냉매 증발기를 설비한 경우의 개요를 도시한 배관, 배선도.1 is a piping and wiring diagram showing an overview when a single refrigerant evaporator is installed in a single cooling chamber of the present invention, and FIG. 2 is a piping and a wiring diagram showing an overview when a plurality of refrigerant evaporators are installed in a single cooling chamber, 3 is a piping and wiring diagram showing an outline when a plurality of refrigerant evaporators are provided in a plurality of cooling chambers, respectively.

Claims (4)

냉매 증발기에 연결한 팽창 밸브로 부터 냉매를 공급하고, 냉매의 증발 잠열을 이용하여 공기를 냉각하는 저온 공기 냉각 장치의 냉매 증발기에 있어서의 서리 제거 개시 방법에 있어서, 상기 팽창 밸브를 팽창 밸브 제어 컴퓨터에 의해 제어함으로써 상기 팽창 밸브가 증발기의 냉동 능력에 적합한 최대 밸브 능력을 설정치로서 기억하게 하고, 상기 컴퓨터가 냉매 증발기 하류의 온도와 압력을 설정치로서 기억하게 하고, 상기 컴퓨터가 냉매 증발기 하류의 온도와 압력을 검출함으로써 검색한 팽창 밸브 최대 능력의 상기 설정치 이하에의 저하를 검지하여 발하는 서리 제거 개시 신호를 제어반에 입력함으로써 공지의 서리 제거 장치를 작동하여 냉매 증발기 표면에 생성하는 서리의 제거를 개사하는 것을 특징으로 하는 냉매 증발기에 있어서의 서리 제거 개시 방법.A defrosting initiation method in a refrigerant evaporator of a low temperature air cooling apparatus for supplying a refrigerant from an expansion valve connected to a refrigerant evaporator and cooling the air by using latent heat of evaporation of the refrigerant, the expansion valve control computer Control by the expansion valve causes the expansion valve to store the maximum valve capacity suitable for the freezing capacity of the evaporator as a set point, the computer to store the temperature and pressure downstream of the refrigerant evaporator as a set point, and the computer to By detecting the pressure, the defrosting start signal, which detects a drop below the set value of the expansion valve maximum capability detected by the input, is input to the control panel, thereby operating a known defrosting device to reconstruct the removal of frost generated on the surface of the refrigerant evaporator. Frost in the refrigerant evaporator, characterized in that Removal Initiation Method. 한 대의 압축기, 응축기에 각각 복수의 팽창 밸브, 냉매 증발기를 사용하고, 각 냉매 증발기에 연결한 각각의 팽창 밸브로부터 냉매를 공급하고, 냉매의 증발 잠열을 이용하여 공기를 냉각하는 저온 공기 냉각 장치의 냉매 증발기에 있어서의 서리 제거 개시 방법에 있어서, 상기 복수의 팽창 밸브를 팽창 밸브 제어 컴퓨터에 의해 제어함으로써 복수의 팽창 밸브가 각 증발기의 냉동 능력에 적합한 최대 밸브 능력을 설정치로서 기억하게 하고, 상기 컴퓨터가 냉매 증발기 흐름 방향 하류의 온도와 압력을 검출함으로써 검색한 복수개의 팽창 밸브 능력의 최대치, 최소치 또는 평균치 중 어느 것이 상기 설정치 이하로 저하함을 검지하여 발하는 서리 제거 개시 신호를 제어반에 입력함으로써 공지의 서리 제거 장치를 작동하여 복수의 냉매 증발기 표면에 발생하는 서리의 제거를 개시하는 것을 특징으로 하는 냉매 증발기에 있어서의 서리 제거 개시 방법.A low temperature air cooling apparatus for supplying a refrigerant from each expansion valve connected to each refrigerant evaporator by using a plurality of expansion valves and a refrigerant evaporator in one compressor and a condenser, and cooling the air by using latent heat of evaporation of the refrigerant. In the method for starting defrost in a refrigerant evaporator, the plurality of expansion valves are controlled by an expansion valve control computer so that the plurality of expansion valves stores the maximum valve capacity suitable for the freezing capacity of each evaporator as a set value. Detects any of the maximum, minimum, or average values of the plurality of expansion valve capacities detected by detecting the temperature and pressure downstream of the refrigerant evaporator flow direction below the set value, and inputs a defrost start signal to the control panel. Operate the defroster to the surface of the plurality of refrigerant evaporators Defrosting start method in a refrigerant evaporator characterized by starting the removal of frost generated. 압축기, 응축기, 팽창 밸브 및 냉매 증발기를 순차 관로로 연결하여 냉매를 흘리고, 다시 압축기로 되돌려 순환하는 저온 공기 냉각 장치의 냉매 증발기에 이어서의 서리 제거 개시 장치에 있어서, 상기 팽창 밸브를 제어함으로써 팽창 밸브가 상기 증발기의 냉동 능력에 적합한 최대 밸브 능력을 설정치로서 기억하게 한 팽창 밸브 제어 컴퓨터를 설치하고, 상기 증발기의 냉매 흐름 방향 하류의 관로에 각각 신호선을 상기 컴퓨터와 결선한 온도 센서와 압력센서를 설치하고, 상기 컴퓨터가 냉매 증발기의 냉매 흐름 방향 하류의 온도와 압력을 검출함으로써 검색한 팽창 밸브 최대 능력의 상기 설정치 이하에의 저하를 검지하여 발하는 서리제거 개시 신호를 입력하고 증발기의 서리 제거를 제어하는 저온 공기 냉각 장치 제어반을 서리 제거 신호선으로 상기 컴퓨터에 결선하여 설치하고, 상기 제어반에 공지의 서리 제거 장치를 결선하여 설치한 것을 특징으로 하는 냉매 증발기에 있어서의 서리 제거 개시 장치.A defrosting initiation device subsequent to a refrigerant evaporator of a low temperature air cooling device that connects a compressor, a condenser, an expansion valve, and a refrigerant evaporator to a sequential pipe and flows the refrigerant back to the compressor, wherein the expansion valve is controlled by controlling the expansion valve. Install an expansion valve control computer which causes the controller to remember the maximum valve capacity suitable for the freezing capacity of the evaporator as a set value, and install a temperature sensor and a pressure sensor in which a signal line is connected to the computer in a pipe downstream of the refrigerant flow direction of the evaporator, respectively. And the computer inputs a defrost start signal which detects a drop below the set value of the expansion valve maximum capability retrieved by detecting the temperature and pressure downstream of the refrigerant flow direction of the refrigerant evaporator and controls the defrost of the evaporator. Low temperature air cooling system control panel with defrost signal line A defrosting initiation device in a refrigerant evaporator, wherein the defrosting device is connected to the computer, and a known defroster is connected to the control panel. 단일 압축기 및 응축기에 복수의 팽창 밸브 및 냉매 증발기를 순차 관로로 연결하여 냉매를 흘리고, 다시 상기 압축기로 되돌려 순환하는 저온 공기 냉각 장치의 냉매 증발기에 있어서의 서리 제거 개시 장치에 있어서, 복수의 팽창 밸브의 각각에 신호선을 결선하여 팽창 밸브의 개폐를 제어함으로써 복수의 팽창 밸브가 각 증발기의 냉동 능력에 적합한 최대 밸브 능력을 설정치로서 기억하게 한 팽창 밸브 제어 컴퓨터를 설치하고, 각 증발기의 냉매 흐름 방향 하류의 관로에 각각 신호선을 상기 컴퓨터와 결선한 온도 센서와 압력 센서를 설치하고, 상기 컴퓨터가 냉매 증발기의 냉매 흐름 방향 하류의 온도와 압력을 검출함으로써 검색한 복수개의 팽창 밸브의 최대 밸브 능력의 최대치, 최소치 또는 평균치 중 어느것이 상기 설정치 이하로 저하하였음을 검지하여 발하는 서리 제거 개시 신호를 입력하고 각 증발기의 서리 제거를 제어하는 저온 공기 냉각 장치 제어 반을 서리 제거 신호선으로 상기 컴퓨터에 결선하여 설치하고, 상기 제어반에 공지의 서리 제거 장치를 결선하여 설치한 것을 특징으로 하는 냉매 증발기에 있어서의 서리 제거 개시 장치.A defrosting initiation device in a refrigerant evaporator of a low-temperature air cooling device that connects a plurality of expansion valves and a refrigerant evaporator to a single compressor and a condenser in a sequential pipeline to flow refrigerant, and then circulates back to the compressor. By connecting a signal line to each of the control valves to control the opening and closing of the expansion valve, and installing an expansion valve control computer for causing the plurality of expansion valves to store as a set value the maximum valve capacity suitable for the freezing capacity of each evaporator, and downstream of the refrigerant flow direction of each evaporator. A temperature sensor and a pressure sensor in which signal lines are connected to the computer in the pipelines of the pipes, respectively, and the maximum value of the maximum valve capability of the plurality of expansion valves retrieved by the computer by detecting the temperature and pressure downstream of the refrigerant flow direction of the refrigerant evaporator, Either the minimum or average value falls below the set value A low temperature air cooler control panel for inputting a defrost start signal issued by detecting a defrosting signal and controlling defrosting of each evaporator is connected to the computer using a defrost signal line, and a known defroster is connected to the control panel. Defrost removal start apparatus in the refrigerant evaporator characterized in that. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920016712A 1992-01-21 1992-09-15 Defrost start method and apparatus in refrigerant evaporator KR930016736A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4049020A JP2694885B2 (en) 1992-01-21 1992-01-21 Defrost start timing identification method for refrigerant evaporator
JP92-490200 1992-01-21

Publications (1)

Publication Number Publication Date
KR930016736A true KR930016736A (en) 1993-08-26

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Application Number Title Priority Date Filing Date
KR1019920016712A KR930016736A (en) 1992-01-21 1992-09-15 Defrost start method and apparatus in refrigerant evaporator

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JP (1) JP2694885B2 (en)
KR (1) KR930016736A (en)

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US5970726A (en) * 1997-04-08 1999-10-26 Heatcraft Inc. Defrost control for space cooling system
BRPI0721189A2 (en) 2007-02-02 2013-01-01 Carrier Corp method for operating a transport refrigeration unit
CN101451779B (en) * 2007-11-28 2012-09-05 海尔集团公司 Defrosting control method for heat pump air conditioner
WO2009093297A1 (en) * 2008-01-21 2009-07-30 Mitsubishi Electric Corporation Heat pump apparatus and air conditioner or water heater having the heat pump apparatus mounted thereon
WO2013082401A1 (en) * 2011-12-02 2013-06-06 Welbilt Walk-Ins, Lp Refrigeration apparatus and method
KR101396693B1 (en) * 2013-12-23 2014-05-16 주식회사 지엠에스 Medical refrigerator and defrosting method using the same
CN108954730B (en) * 2018-06-20 2021-04-20 广东美的制冷设备有限公司 Control method and device for heating compressor winding
CN108800489B (en) * 2018-06-20 2020-12-22 广东美的制冷设备有限公司 Control method and device for heating compressor winding
CN109059192B (en) * 2018-06-20 2021-04-20 广东美的制冷设备有限公司 Control method and device for heating compressor winding
CN113776230A (en) * 2021-09-25 2021-12-10 益鹏智能系统科技(上海)有限公司 Control method and system for natural gas heating electronic expansion valve

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JPS6136671A (en) * 1984-07-26 1986-02-21 三洋電機株式会社 Controller for flow rate of refrigerant
JPS62131167A (en) * 1985-12-03 1987-06-13 株式会社デンソー Refrigeration cycle device
DE3900643A1 (en) * 1989-01-11 1990-07-12 Schmitz Kuehler Baierbrunn METHOD FOR OPTIMIZING THE PERFORMANCE OF REFRIGERANT EVAPORATORS
US5233841A (en) * 1990-01-10 1993-08-10 Kuba Kaltetechnik Gmbh Method of optimising the performance of refrigerant vaporizers including improved frost control method and apparatus
DE4105880A1 (en) * 1991-02-25 1992-08-27 Kueba Kaeltetechnik Gmbh METHOD AND DEVICE FOR OPTIMIZING THE PERFORMANCE AND DEFROSTING OF REFRIGERANT EVAPORATORS

Also Published As

Publication number Publication date
JP2694885B2 (en) 1997-12-24
EP0552906A2 (en) 1993-07-28
EP0552906A3 (en) 1994-11-30
JPH05196343A (en) 1993-08-06

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