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WO2018190002A1 - Vitrine frigorifique - Google Patents

Vitrine frigorifique Download PDF

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Publication number
WO2018190002A1
WO2018190002A1 PCT/JP2018/006251 JP2018006251W WO2018190002A1 WO 2018190002 A1 WO2018190002 A1 WO 2018190002A1 JP 2018006251 W JP2018006251 W JP 2018006251W WO 2018190002 A1 WO2018190002 A1 WO 2018190002A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
temperature
predetermined value
temperature sensor
detected
Prior art date
Application number
PCT/JP2018/006251
Other languages
English (en)
Japanese (ja)
Inventor
真佐行 濱田
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to EP18784921.1A priority Critical patent/EP3611448B1/fr
Publication of WO2018190002A1 publication Critical patent/WO2018190002A1/fr

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0482—Details common to both closed and open types
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/28—Quick cooling
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature

Definitions

  • the present invention relates to a refrigerated showcase.
  • the efficiency of compressors has been improved by inverters for the purpose of energy saving.
  • the operation speed of this compressor can only be controlled by the circulating air temperature.
  • the temperature difference between the circulating air temperature and the object is small and almost the same, but when the object is not cooled, the circulating air temperature and the object Since the temperature difference is large and the compressor control is performed at the circulating air temperature, the temperature of the object does not accompany it, so that the object has not been cooled or has a problem that it takes time for cooling.
  • This invention solves the said conventional subject, and aims at providing the refrigeration showcase which implement
  • the refrigerated showcase of the present invention includes a compressor, a condenser, a pressure reducing device, a refrigeration circuit in which an evaporator is connected in a ring shape with a refrigerant pipe, and air is circulated through the evaporator.
  • a temperature sensor for detecting the temperature of the air and a control device, the control device is a predetermined value 1 for stopping the operation of the compressor, and a predetermined value for starting the operation of the compressor 2 and a predetermined value 3 for starting operation speed control of the compressor, the control device detects the temperature detected by the temperature sensor during high speed operation where the operation speed of the compressor is constant.
  • the compressor Stops the operation of the compressor when the predetermined value 1 is reached, and then causes the compressor to execute the high speed operation when the detected temperature of the temperature sensor reaches the predetermined value 2, Then in front of the temperature sensor When the detected temperature has reached the predetermined value 3, the compressor as the working rotational speed control, it is characterized in reducing the working rotational speed of the compressor stages.
  • Refrigeration cycle schematic of the refrigerated showcase Configuration diagram of control device for refrigerated showcase in the present embodiment Another temperature correlation diagram between the operating speed control of the compressor and the temperature detected by the temperature sensor
  • Another temperature correlation diagram between the operating speed control of the compressor and the temperature detected by the temperature sensor Control flow in this embodiment
  • the first aspect is a refrigeration circuit in which a compressor, a condenser, a decompression device, and an evaporator are connected in a ring shape with a refrigerant pipe, a fan that blows and circulates air through the evaporator, and a temperature that detects the temperature of the air A sensor and a control device, wherein the control device controls a predetermined value 1 for stopping the operation of the compressor, a predetermined value 2 for starting the operation of the compressor, and an operation rotational speed control of the compressor.
  • the control device stores the predetermined value 3 to be started, and when the detected temperature of the temperature sensor reaches the predetermined value 1 during the high speed operation in which the operation speed of the compressor is constant, the control device The operation of the machine is stopped, and thereafter, when the detected temperature of the temperature sensor reaches the predetermined value 2, the compressor is caused to execute the high speed operation, and thereafter, the detected temperature of the temperature sensor is set to the predetermined temperature.
  • value 3 As the working rotational speed control compressor, a refrigerated showcase, characterized in that reducing the working rotational speed of the compressor stages.
  • the compressor is set as the operation rotational speed control, and the operation of the compressor is performed.
  • the rotational speed is decreased stepwise and the elapsed time does not exceed the reference time, the high speed operation of the compressor is continued until the detected temperature of the temperature sensor reaches the predetermined value 1 thereafter. It is a refrigerated showcase characterized by continuing.
  • the third aspect is characterized in that, in addition to the first or second aspect, the fan is not stopped during the operation stop of the compressor.
  • FIG. 1 shows a schematic view of a refrigerated showcase according to an embodiment of the present invention.
  • FIG. 2 shows a schematic configuration diagram of the refrigeration cycle of the refrigerated showcase.
  • the refrigeration cycle for cooling the refrigerated showcase in the present embodiment includes a refrigeration circuit 20 in which a compressor 1, a condenser 2, a decompression device 3, and an evaporator 4 are connected in order through a refrigerant pipe. It consists of As shown in FIG. 1, the evaporator 4 is disposed in the refrigerated showcase 30 for cooling. A fan 5 is disposed in the vicinity of the evaporator 4. The air in the refrigerated showcase 30 is circulated by the fan 5 to cool the object 7 to be cooled.
  • a temperature sensor 6 is provided in the air flow path upstream of the evaporator 4. The operation of the compressor 1 and the operation of the fan 5 are determined by the circulating air temperature detected by the temperature sensor 6.
  • the compressor 1 can be controlled to change the rotation speed (capacity) by driving an inverter, and the fan 5 can be controlled by starting and stopping using a constant speed fan.
  • the refrigeration circuit 20 is housed in the lower part of the refrigerated showcase 30.
  • the refrigeration circuit 20 may be disposed outside the refrigerated showcase 30, and the temperature sensor 6 inside the refrigerated showcase 30 is preferably located upstream from the evaporator 4 and downstream from the object 7 to be cooled.
  • the fan 5 is not limited to the vicinity of the evaporator 4 as long as the air circulation inside the refrigerated showcase 30 can be performed.
  • FIG. 3 is a configuration diagram of the control device for the refrigerated showcase in the present embodiment.
  • the control device 8 is connected to the power source, the temperature sensor 6, the fan 5, and the compressor 1, and has a function of determining the operation of the compressor 1 and the fan 5 based on the temperature detected by the temperature sensor 6. is doing.
  • the inverter drive circuit 9 of the compressor 1 operates in accordance with an instruction from the control device 8, but the control device 8 includes the inverter drive circuit 9 in the present embodiment.
  • the inverter drive circuit 9 may be provided separately from the control device 8.
  • FIG. 4 and 5 are temperature correlation diagrams between the operation speed control of the compressor and the detected temperature of the temperature sensor in the present embodiment, and FIG. 6 is a control flow in the present embodiment.
  • the vertical axis indicates the temperature of the circulating air inside the refrigerated showcase 30 detected by the temperature sensor 6, the temperature of the object to be cooled 7, the start / stop of the compressor 1, and the rotational speed change.
  • the axis shows the passage of time.
  • the predetermined value 1 is a set temperature at which the compressor 1 is stopped (OFF)
  • the predetermined value 2 is a set temperature at which the compressor 1 is started (ON)
  • the predetermined value 3 is a setting at which the operation rotational speed control of the compressor 1 is started.
  • the temperature, the predetermined value 4 is a set temperature at which the operation at which the operation speed of the compressor 1 is kept constant at a low speed is started.
  • the set temperature of the predetermined value 4 is higher than the predetermined value 1 and is set to the predetermined value 3 from the predetermined value 4 The temperature is high and the set temperature of the predetermined value 2 is higher than the predetermined value 3.
  • the control device 8 stores the predetermined value 1, the predetermined value 2, the predetermined value 3, and the predetermined value 4 in advance.
  • the control device 8 operates the compressor 1 at high speed operation, preferably at maximum capacity (maximum rotation speed) operation (S1).
  • S1 the operation of the fan 5 is started.
  • the control device 8 determines whether or not the detected value of the temperature sensor 6 has reached the stop temperature (predetermined value 1) of the compressor 1 after operating the compressor 1 at high speed operation (S2).
  • the compressor 1 continues high-speed operation until the detected value of the temperature sensor 6 reaches the stop temperature (predetermined value 1) of the compressor 1.
  • the control device 8 stops the compressor 1 (S3).
  • S3 the operation of the fan 5 continues without stopping.
  • the control device 8 starts measuring the timer from the stop of the compressor 1 in S3 (S4).
  • the control device 8 After the compressor 1 is stopped in S3, it is determined whether or not the detected value of the temperature sensor 6 has reached the starting temperature (predetermined value 2) of the compressor 1 (S5). The compressor 1 is stopped until the detected value of the temperature sensor 6 reaches the starting temperature of the compressor 1 (predetermined value 2). When the detected value of the temperature sensor 6 reaches the starting temperature (predetermined value 2) of the compressor 1, the control device 8 operates the compressor 1 again at high speed operation, preferably at maximum capacity (maximum rotation speed) operation. (ON) (S6). The control device 8 ends the timer measurement by the operation of the compressor 1 in S6 (S7). The control device 8 determines whether or not the elapsed time from the start of the timer measurement in S4 to the end of the timer measurement in S7 exceeds the reference time (S8).
  • the control shown in FIG. 4 is performed. That is, the control device 8 determines whether or not the detection value of the temperature sensor 6 has reached the rotation speed reduction start temperature (predetermined value 3) of the compressor 1 (S9). Along with the operation of the compressor 1, the circulating air temperature (detected value of the temperature sensor 6) drops and the detected value of the temperature sensor 6 reaches the rotation speed reduction start temperature (predetermined value 3) of the compressor 1. Shifts to the operation rotational speed control of the compressor 1, that is, inverter control, and reduces the rotational speed stepwise (S10). In S10, the operation of the fan 5 continues without stopping. In S9, the compressor 1 continues high-speed operation until the detection value of the temperature sensor 6 reaches the temperature (predetermined value 3) at which the operation rotational speed control of the compressor 1 starts.
  • the control device 8 determines whether or not the detected value of the temperature sensor 6 has reached a temperature (predetermined value 4) at which operation is started at a constant low speed of the compressor 1 (S11). ). The control device 8 gradually decreases the operating rotational speed of the compressor 1 until the detection value of the temperature sensor 6 decreases to the predetermined value 4 (S10). In S11, when the detection value of the temperature sensor 6 reaches the predetermined value 4, the control device 8 sets the operation rotational speed of the compressor 1 to a low speed operation at a constant speed (S12).
  • the operation rotational speed control of the compressor 1 is not performed, and the compressor 1 is operated at a high speed.
  • the maximum capacity (maximum rotation speed) operation the temperature of the circulating air can be lowered within a short time.
  • the compressor 1 After the temperature of the circulating air recovers to the predetermined value 2, the compressor 1 is operated at a high speed until the temperature decreases to the predetermined value 3, and after the temperature decreases to the predetermined value 3, the operation speed control is performed. 7 can be cooled in a short time, and after the cooling object 7 is cooled, the number of times of starting and stopping of the compressor 1 can be reduced, so that both energy saving and shortening of the cooling time can be achieved.
  • rotation speed control by other protection may be performed. Note that the transition from the operation rotational speed control to the constant rotational speed operation is performed when the temperature exceeds a predetermined temperature or when the power supply is stopped, but is not limited to these cases.
  • FIG. 5 shows the control when it is determined in S8 that the reference time has not elapsed.
  • the compressor 1 is operated at high speed, and it is determined whether or not the circulating air temperature (detected value of the temperature sensor 6) has reached a predetermined value 1 ( S2). In this way, a fixed reference time is provided within the stop time of the compressor 1, and the operation rotation of the compressor 1 is performed at the next stage due to the increase in the circulating air temperature (detected value of the temperature sensor 6) within this reference time. Determine whether to control the number.
  • the compressor 1 is set to high speed operation, preferably maximum capacity (maximum rotation speed) operation. Even if the circulating air temperature (detected value of the temperature sensor 6) reaches the predetermined value 3, the compressor 1 is not controlled to operate at the rotational speed.
  • the compressor 1 When the circulating air temperature (detected value of the temperature sensor 6) reaches the predetermined value 2 exceeding the reference time, the compressor 1 is operated at high speed, preferably at maximum capacity (maximum rotation speed), and the circulating air temperature (temperature) When the detection value of the sensor 6 reaches the predetermined value 3, the compressor 1 is thereafter shifted to the operation rotational speed control.
  • the cooling time of the cooling object 7 can be further shortened by operating the compressor 1 at high speed, preferably at maximum capacity (maximum rotation speed).
  • cooling is prioritized and air circulation is stopped.
  • the fan 5 is not stopped while the compressor 1 is stopped, so that the circulating air and cooling are stopped.
  • the heat exchange of the object 7 is promoted, and the temperature detected by the temperature sensor 6 is set to a value close to the temperature of the object 7 to be cooled, thereby shortening the cooling time and preventing excessive cooling.
  • the refrigerated showcase according to the present invention can improve the refrigeration effect and realize energy saving operation, it can be applied to a refrigerator or an automatic vending machine equipped with an inverter compressor.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention concerne une vitrine frigorifique (30) comprenant: un circuit de réfrigération (20) dans lequel un compresseur (1), un condenseur (2), un dispositif de décompression (3), et un évaporateur (4) sont reliés de manière annulaire par une tuyauterie de fluide frigorigène; un ventilateur (5) qui souffle de l'air et amène l'air à circuler vers l'évaporateur (4); un capteur de température (6) pour détecter la température de l'air; et un dispositif de commande (8). Lorsque la température détectée du capteur de température (6) atteint une "valeur prédéterminée 1" pendant un fonctionnement à grande vitesse dans lequel la vitesse de fonctionnement du compresseur (1) est constant, le fonctionnement du compresseur (1) est arrêté, lorsque la température détectée du capteur de température (6) atteint ensuite une " valeur prédéterminée 2 ", le compresseur (1) est amené à fonctionner à une vitesse élevée, et lorsque la température détectée du capteur de température (6) atteint en outre une " valeur prédéterminée 3 ", la vitesse de fonctionnement du compresseur (1) est commandée de telle sorte que la vitesse de fonctionnement du compresseur (1) soit réduite de manière progressive. Par conséquent, l'effet de réfrigération et l'opération d'économie d'énergie sont réalisés.
PCT/JP2018/006251 2017-04-12 2018-02-21 Vitrine frigorifique WO2018190002A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18784921.1A EP3611448B1 (fr) 2017-04-12 2018-02-21 Vitrine frigorifique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017078616A JP2020101294A (ja) 2017-04-12 2017-04-12 冷蔵ショーケース
JP2017-078616 2017-04-12

Publications (1)

Publication Number Publication Date
WO2018190002A1 true WO2018190002A1 (fr) 2018-10-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/006251 WO2018190002A1 (fr) 2017-04-12 2018-02-21 Vitrine frigorifique

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Country Link
EP (1) EP3611448B1 (fr)
JP (1) JP2020101294A (fr)
WO (1) WO2018190002A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735456A (ja) * 1993-07-21 1995-02-07 Matsushita Refrig Co Ltd 冷凍冷蔵庫の制御装置
JPH07282344A (ja) * 1994-04-06 1995-10-27 Kubota Corp 自動販売機の庫内温度制御装置
WO2005038365A1 (fr) * 2003-10-20 2005-04-28 Hoshizaki Denki Co., Ltd. Stockage refrigere
JP2007315716A (ja) * 2006-05-27 2007-12-06 Fukushima Industries Corp 冷蔵庫
JP2011169590A (ja) * 2011-06-08 2011-09-01 Mitsubishi Electric Corp ショーケース
JP2011208850A (ja) * 2010-03-29 2011-10-20 Hoshizaki Electric Co Ltd 冷却貯蔵庫
CN102287982B (zh) * 2011-09-14 2013-11-06 合肥美的电冰箱有限公司 化霜冰箱及化霜冰箱的控制方法
JP2014190661A (ja) * 2013-03-28 2014-10-06 Panasonic Corp 冷却貯蔵庫
JP2015075310A (ja) 2013-10-10 2015-04-20 富士電機株式会社 冷却装置およびショーケース
JP2018013265A (ja) * 2016-07-20 2018-01-25 日立アプライアンス株式会社 冷蔵庫

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960002564B1 (ko) * 1992-04-30 1996-02-22 삼성전자주식회사 압축기 제어회로
BRPI0611215A2 (pt) * 2005-05-30 2010-08-24 Arcelik As dispositivo e resfriamento e o mÉtodo de controle
JP2008096028A (ja) * 2006-10-12 2008-04-24 Denso Corp 冷蔵庫用冷凍機
EP2580547A2 (fr) * 2010-06-08 2013-04-17 Arçelik Anonim Sirketi Dispositif de réfrigération à deux compartiments

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735456A (ja) * 1993-07-21 1995-02-07 Matsushita Refrig Co Ltd 冷凍冷蔵庫の制御装置
JPH07282344A (ja) * 1994-04-06 1995-10-27 Kubota Corp 自動販売機の庫内温度制御装置
WO2005038365A1 (fr) * 2003-10-20 2005-04-28 Hoshizaki Denki Co., Ltd. Stockage refrigere
JP2007315716A (ja) * 2006-05-27 2007-12-06 Fukushima Industries Corp 冷蔵庫
JP2011208850A (ja) * 2010-03-29 2011-10-20 Hoshizaki Electric Co Ltd 冷却貯蔵庫
JP2011169590A (ja) * 2011-06-08 2011-09-01 Mitsubishi Electric Corp ショーケース
CN102287982B (zh) * 2011-09-14 2013-11-06 合肥美的电冰箱有限公司 化霜冰箱及化霜冰箱的控制方法
JP2014190661A (ja) * 2013-03-28 2014-10-06 Panasonic Corp 冷却貯蔵庫
JP2015075310A (ja) 2013-10-10 2015-04-20 富士電機株式会社 冷却装置およびショーケース
JP2018013265A (ja) * 2016-07-20 2018-01-25 日立アプライアンス株式会社 冷蔵庫

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3611448A4

Also Published As

Publication number Publication date
EP3611448B1 (fr) 2021-10-27
EP3611448A1 (fr) 2020-02-19
JP2020101294A (ja) 2020-07-02
EP3611448A4 (fr) 2020-04-15

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