WO2012132131A1 - Système de commande pour des dispositifs de refroidissement - Google Patents

Système de commande pour des dispositifs de refroidissement Download PDF

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Publication number
WO2012132131A1
WO2012132131A1 PCT/JP2011/079076 JP2011079076W WO2012132131A1 WO 2012132131 A1 WO2012132131 A1 WO 2012132131A1 JP 2011079076 W JP2011079076 W JP 2011079076W WO 2012132131 A1 WO2012132131 A1 WO 2012132131A1
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WO
WIPO (PCT)
Prior art keywords
cooling device
sunlight
direct
determination unit
time zone
Prior art date
Application number
PCT/JP2011/079076
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English (en)
Japanese (ja)
Inventor
淳 大内
Original Assignee
三洋電機株式会社
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 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP2013507062A priority Critical patent/JPWO2012132131A1/ja
Publication of WO2012132131A1 publication Critical patent/WO2012132131A1/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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • A47F3/0478—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/20—Sunlight
    • 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

Definitions

  • the present invention relates to a control system for controlling a plurality of cooling devices such as a showcase installed in a store or the like.
  • Stores such as supermarkets and convenience stores are equipped with multiple showcases (cooling devices), which cool products (articles) in the display room (cooled space) of each showcase and adjust the temperature.
  • the display is kept low.
  • an integrated controller that collectively controls multiple showcases has been installed in stores, and setting data such as set temperatures and defrost settings are sent from each integrated controller to each showcase.
  • Centralized control that collects data related to operating conditions such as alarms and alarms has come to be performed.
  • the present invention has been made to solve the conventional technical problems, and can accurately prevent or eliminate the occurrence of cooling failure due to direct sunlight without changing the window glass of the facility.
  • the present invention provides a control system for cooling equipment that can be used.
  • the control system of the present invention controls a plurality of cooling devices for cooling an article, and each cooling device is provided with a time zone during which the cooling device may be exposed to sunlight.
  • a direct time zone determination unit that determines each of the devices, a direct irradiation determination unit that determines whether or not the cooling device is actually exposed to sunlight, and a control that controls the cooling device based on the determination contents of the direct sunlight determination unit And a section.
  • the direct-light determining unit determines that the sunlight is actually directly applied to the cooling device, and the direct-light time zone determining unit directly applies sunlight to the cooling device.
  • the control unit increases the number of rotations of the cool air circulation fan of the cooling device.
  • the direct-light determination unit determines that the sunlight is actually radiated directly to the cooling device, and the direct-light time zone determination unit directly radiates the sunlight to the cooling device.
  • the control unit reduces the cooling set temperature of the cooling device.
  • the direct sunlight determination unit determines that the sunlight is actually radiated directly to the cooling device, and the direct sunlight time period determination unit directly radiates the sunlight to the cooling device.
  • the control unit increases the amount of refrigerant circulated to the cooler of the cooling device.
  • the direct sunlight determination unit determines that the sunlight is actually radiated directly to the cooling device, and the direct sunlight time period determination unit directly radiates the sunlight to the cooling device.
  • the control unit turns off the lighting device of the cooling device or reduces the illuminance.
  • the direct-light determination unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determination unit directly radiates the sunlight to the cooling device.
  • the control unit delays the defrosting timing of the cooler of the cooling device.
  • the control system for a cooling device of the invention of claim 7 is that in each of the above inventions, the direct-light determination unit is configured such that the amount of solar radiation on the window surface, the illuminance on the window surface, the temperature near the window surface, or the use status of the blind provided on the window
  • the direct sunlight of the cooling device is determined based on any one of the above or a combination thereof.
  • a direct time period determination unit that determines, for each cooling device, a time zone in which the cooling device may be directly exposed to sunlight.
  • a direct-light determination unit that determines whether or not the cooling device is actually exposed to sunlight, and a control unit that controls the cooling device based on the determination contents of the direct-light determination unit, for example,
  • the direct sunlight determination unit determines that the sunlight is actually shining on the cooling device
  • the direct light time zone determination unit is a time zone in which the sunlight is likely to shine directly on the cooling device. If it is determined, if the control unit increases the number of rotations of the cooling air circulation fan of the cooling device, the cooling device may not be cooled due to direct sunlight without changing the window glass or the like as in the past. In advance It is possible to control or eliminate.
  • the direct-light time zone determination unit determines the time zone during which the cooling device may be exposed to sunlight for each cooling device, and the direct-light determination unit is the invention of claim 7.
  • the direct sunlight exposure to the cooling equipment is determined based on any combination or combination of the amount of sunlight and illuminance on the window surface, the temperature near the window surface, and the usage status of the blinds. It becomes possible to accurately realize control of individual cooling devices corresponding to direct irradiation.
  • control unit controls each cooling device by direct sunlight, only the cooling device that is exposed to sunlight can increase the number of rotations of the cooling air circulation fan. The increase in energy consumption can also be prevented.
  • the direct-light determining unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determining unit is a time zone in which the sunlight is likely to be directly radiated to the cooling device. If it is determined that, the control unit can also be realized by lowering the cooling set temperature of the cooling device.
  • the direct-light determining unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determining unit is a time zone in which the sunlight is likely to shine directly on the cooling device. When it is determined that there is, it can be realized by the control unit increasing the amount of refrigerant circulated to the cooler of the cooling device.
  • the direct-light determining unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determining unit is a time zone in which the sunlight is likely to shine directly on the cooling device.
  • the control unit can also realize by turning off the lighting device of the cooling device or reducing the illuminance.
  • the direct-light determining unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determining unit is a time zone in which the sunlight is likely to be directly radiated to the cooling device. If it is determined that the defrosting timing of the cooler of the cooling device is delayed, it is also effective.
  • FIG. 2 It is a schematic sectional drawing of the store to which this invention is applied. It is a block diagram of the control system of this invention. It is a figure which shows the data regarding the time slot
  • FIG. 1 1 is a store (facility) such as a supermarket or a convenience store, and this store 1 has a plurality of showcases A, B, C as examples of cooling devices (only A and B are shown in FIG. 1). ) Is installed.
  • Reference numeral 2 denotes a window glass (window surface) of the store 1, and sunlight enters from the window glass 2 (indicated by a white arrow in FIG. 1).
  • Reference numeral 3 denotes a pyranometer (measurement instrument for solar radiation determination) installed inside the window glass 2 and detects the amount of vertical window solar radiation that enters the store 1 from the window glass 2.
  • Each showcase A, B, and C is provided with a cooler and a cold air circulation fan.
  • the cooler is provided by a refrigerator R (FIG. 2) and a refrigerant pipe installed outside the store via a pressure reducing device and a solenoid valve. It is connected.
  • the refrigerator includes a compressor, a condenser, and the like, and these compressor, condenser, decompressor, and each cooler constitute a known refrigerant circuit. Then, the refrigerant discharged from the compressor and condensed by the condenser is distributed and supplied to the coolers of the showcases A, B, and C via the decompression device.
  • the refrigerant that has flowed into the coolers of the showcases A, B, and C evaporates there to exert a cooling effect.
  • Each of the showcases A, B, and C cools the display chamber by circulating the cool air exchanged with the cooler into the display chamber (cooled space).
  • the refrigerant circulation to the coolers of the individual showcases A, B, and C is controlled by a solenoid valve based on the temperature of the display room (cooled space) and the like, whereby each showcase A, B, and C
  • the display chamber is maintained to be cooled to each cooling set temperature.
  • Each showcase A, B, and C is provided with a lighting device, and the display room is illuminated by the lighting device.
  • FIG. 2 shows a configuration diagram of the control system 4 of the showcases A, B, and C in the store 1 of the embodiment.
  • reference numeral 6 denotes an integrated controller installed in the store 1, which has as its functions a direct time zone determination unit, a direct irradiation determination unit, and a control unit in the present invention.
  • the integrated controller 6 is connected to a plurality of showcases A, B, C, the refrigerator R, and the pyranometer 3 installed in the store 1 through communication lines. By transmitting control data and receiving and collecting measurement data from each device, all these devices are integrated and controlled.
  • the control data to be transmitted to each showcase A, B, C or refrigerator R is the setting related to the cooling set temperature, the defrost control of the cooler, the cool air circulation fan control, the decompression device control, the solenoid valve control, etc. It is data.
  • the measurement data collected from the showcases A, B, C and the refrigerator R are the temperatures of the other parts of the display room of each showcase A, B, C and the temperatures of the respective parts of the refrigerator R.
  • the measurement data to be collected is measurement data of the window vertical solar radiation amount.
  • the integrated controller 6 has a time zone information database 7.
  • this time zone information database 7 for each showcase A, B, C, a time zone in which the showcase is likely to be directly exposed to the sunlight that shines from the window glass 2 is input in advance.
  • FIG. 3 shows an example of actual data input to the time zone information database 7.
  • the time zone information database 7 of the embodiment divides a year into three seasons of summer, winter, and other intermediate seasons (spring, autumn) in which the angle of the sun changes, and each showcase A, B, About C, when the sun has come out, the time zone in which sunlight shines directly every season is confirmed beforehand and inputted.
  • the showcase A since the showcase A is installed at a position closest to the window glass 2 as shown in FIG. 1, the hatching in FIG. It is confirmed in advance that there is a possibility of direct sunlight in the sunlight, and is input to the time zone information database 7. Also, it has been confirmed in advance that Showcase A may be exposed to sunlight directly in the winter from 13:00 to 16:00, and in the intermediate season from 13:00 to 16:30. Is input.
  • the showcase B installed inside the store from the showcase A to the window glass 2 is not likely to be exposed to direct sunlight in the summer, but is directly exposed in the winter from 15:00 to 16:30. In the season, it is confirmed in advance that there is a possibility of direct irradiation in the time zone from 15:00 to 17:00, and is input to the time zone information database 7.
  • the showcase C since the showcase C is installed in the back of the store, it is confirmed in advance that there is no possibility of being directly exposed to sunlight from the window glass 2 throughout the year, and is input to the time zone information database 7 to that effect. .
  • the integrated controller 6 stores the drawing data of the store 1. If it holds, the integrated controller 6 calculates the incident angle of sunlight from the window glass 2 from the latitude / longitude of the store, and each showcase A, B, C may be directly exposed to sunlight.
  • the time zone information database 7 may be constructed by deriving by calculation.
  • FIG. 4 shows the change in the amount of solar radiation (window vertical solar radiation amount) after passing through the window glass 2 measured by the pyranometer 3 throughout the day.
  • the season is summer
  • the day of the day of the embodiment is that the amount of solar radiation has increased from around 6:00 near the sunrise, and almost reached zero at around 17:00 near the sunset.
  • the direct sunlight determination unit of the integrated controller 6 determines that the amount of solar radiation is 0.06 kW / square meter or more and that the showcase is actually directly exposed to sunlight
  • the integrated controller 6 is 16: Up to 30 will actually determine that the showcase is exposed to sunlight.
  • the direct time zone determination unit of the integrated controller 6 is directly exposed to sunlight only in the showcase A based on the information input to the time zone information database 7.
  • the showcases B and C are judged not to be possible (left in FIG. 3). That is, a time zone in which sunlight is likely to be directly irradiated is determined for each of the showcases A, B, and C.
  • the integrated controller 6 determines that the direct sunlight time zone determination unit determines that it is a time zone in which the showcase A may be directly exposed to sunlight, and the direct sunlight determination unit uses the measurement data of the solar radiation meter 3 as described above. If it is determined that the showcase is actually directly exposed to sunlight, it is determined that the showcase A is actually directly exposed to sunlight at the current time (13:00), and the control unit applies the showcase A to the showcase A. Control data (cold air circulation fan rotation speed) is transmitted to increase the rotation speed of the cold air circulation fan (shown as a control target in FIG. 1, and showcase B is not controlled).
  • the direct time zone determination in which the integrated controller 6 determines the time zone in which sunlight is likely to shine directly on the showcases A to C for each of the showcases A, B, and C. A direct-light determination unit that determines whether or not the showcases A to C are actually exposed to sunlight, and a control unit that controls each of the showcases A, B, and C based on the determination content of the direct-light determination unit.
  • the direct-light determining unit determines that the sunlight is actually shining directly on the showcases A, B, and C, and the direct-light time zone determining unit directly shines on the showcase A as in the embodiment.
  • control unit increases the number of rotations of the cool air circulation fan of the showcase A, so it is possible to suppress the occurrence of poor cooling of the showcase A due to direct sunlight. Young Clause so that it is possible to eliminate.
  • the store where the showcase is installed has in-store lighting. It becomes difficult to judge from.
  • it is difficult to determine which part of the showcase the illuminometer is to be attached to because the part of the showcase that is exposed to sunlight changes depending on the location, time, and season of the showcase.
  • the direct time zone determination unit of the integrated controller 6 determines the time zone in which the showcases A, B, and C may be exposed to sunlight, for each of the showcases A, B, and C, and Since the direct sunlight judgment unit judges the direct sunlight on the showcases A, B, and C based on the amount of solar radiation of the window glass 2, it can respond to the direct sunlight without being affected by the store interior lighting. Control of individual showcases A, B, and C can be realized accurately. Moreover, this means that it is not necessary to provide an illuminance meter or the like for each showcase A, B, C, so that the cost can be reduced by simplifying the device configuration.
  • a solar radiation meter 3 is provided on the window glass 2 as in the embodiment to determine direct sunlight on the showcases A, B, and C, a portion that is not shaded by the window glass 2 is selected and the solar radiation meter is selected. There is no problem if 3 is provided.
  • the control part of the integrated controller 6 will perform control of each showcase A, B, and C by direct sunlight, only the showcase (A in the embodiment) in which sunlight is direct, The number of rotations of the cold air circulation fan can be increased, and an increase in energy consumption more than necessary can be prevented.
  • the showcases A, B, and C are determined to be in a time zone in which there is a possibility of being exposed to sunlight, and when it is determined that the showcases are actually exposed to sunlight.
  • the present invention is not limited to this, and the control unit of the integrated controller 6 is also realized by lowering the cooling set temperature of the showcase A (or B, C). can do.
  • the controller of the integrated controller 6 increases the amount of refrigerant circulated to the cooler of the showcase A (or B, C) by controlling the pressure reducing device and the electromagnetic valve (in the showcase A). This can also be realized by supplying the refrigerant in a concentrated manner. That is, the cooling capacity is increased by increasing the amount of refrigerant circulating to the cooler.
  • control unit of the integrated controller 6 is also realized by turning off the lighting device of the showcase A (or B, C) or reducing the illuminance (reducing the number of lit fluorescent lamps). can do. That is, the amount of heat (heat load) emitted from the lighting device into the display room is reduced by turning off the lighting device or reducing the illuminance.
  • the controller of the integrated controller 6 is also effective for the controller of the integrated controller 6 to delay the defrosting timing of the cooler of the showcase A (or B, C). During the defrosting, the display room is not cooled. Therefore, when the defrosting timing is reached while exposed to solar radiation, the defrosting timing is delayed and the direct exposure time zone is removed. This is because it is possible to suppress the temperature rise.
  • the amount of solar radiation from the window glass 2 is measured using the solar radiation meter 3, and the direct-light judgment part of the integrated controller 6 judges the direct sunlight of the showcase based on this measurement data.
  • the present invention is not limited thereto, and the illuminance near the window glass 2 may be measured using an illuminometer, and the presence or absence of actual solar radiation may be determined based on whether the illuminance is equal to or greater than a predetermined threshold. That is, if there is solar radiation, the illuminance near the window glass 2 increases.
  • the temperature near the window glass 2 may be measured using a thermometer to determine the presence of actual solar radiation. For example, prepare a thermometer that is exposed to solar radiation (with solar radiation) and a thermometer that is not exposed to sunlight (cover with a cover, etc., always shaded). Because it can be done.
  • the window glass 2 is provided with a blind and the use status of the blind (whether closed or open) can be detected, the presence or absence of direct sunlight may be determined according to the use status of the blind. . And whether these showcases A, B, and C are actually exposed to sunlight by combining two or more of the amount of solar radiation from the window glass 2, illuminance, temperature, and usage of blinds. If judged, the certainty is further improved.
  • the present invention is explained by a control system 4 including a plurality of showcases A to C and a refrigerator R installed in a store, an integrated controller 6 that centrally controls them, an illuminometer 3, and the like.
  • the present invention is not limited thereto, and the present invention is also effective as a control system in a facility where there is a possibility that a plurality of cooling devices for cooling an article, for example, a refrigerator or a freezer is exposed to direct sunlight.

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

Abstract

[Problème] L'invention concerne un système de commande pour des dispositifs de refroidissement, qui est en mesure d'empêcher ou d'éliminer de manière appropriée l'apparition d'un mauvais refroidissement causé par la lumière solaire directe et ce sans changer le verre à vitre ou autre. [Solution] L'invention concerne un système de commande (4) commandant une pluralité de vitrines (A, B, C) à des fins de refroidissement. Un dispositif de commande intégré (6) comporte une unité de détermination des fuseaux horaires de la lumière solaire directe qui, relativement aux vitrines respectives, détermine les fuseaux horaires pendant lesquels les vitrines peuvent être exposées à la lumière solaire directe, une unité de détermination de la lumière solaire directe qui détermine si oui ou non les vitrines sont réellement exposées à la lumière solaire directe, et une unité de commande qui commande les vitrines respectives en fonction des contenus de la détermination effectuée par l'unité de détermination de la lumière solaire directe.
PCT/JP2011/079076 2011-03-28 2011-12-15 Système de commande pour des dispositifs de refroidissement WO2012132131A1 (fr)

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JP2013507062A JPWO2012132131A1 (ja) 2011-03-28 2011-12-15 冷却機器の制御システム

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JP2011069563 2011-03-28
JP2011-069563 2011-03-28

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WO2012132131A1 true WO2012132131A1 (fr) 2012-10-04

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55132319A (en) * 1979-03-29 1980-10-15 Nippon Denso Co Ltd Controlling method of air conditioning for vehicle
JPH10213372A (ja) * 1997-01-30 1998-08-11 Nakano Refrigerators Co Ltd 平型ショーケースの温度制御方法及び装置
JP2000088423A (ja) * 1998-09-18 2000-03-31 Tokyo Electric Power Co Inc:The 低温ショーケースの制御装置
JP2001082782A (ja) * 1999-09-13 2001-03-30 Toshiba Corp 空調制御装置
JP2004125288A (ja) * 2002-10-02 2004-04-22 Sanki Eng Co Ltd 空調システム
JP2004251559A (ja) * 2003-02-20 2004-09-09 Matsushita Electric Ind Co Ltd 空気調和機の制御装置及び制御方法
JP2010169388A (ja) * 2008-12-25 2010-08-05 Sanyo Electric Co Ltd 空調制御装置、冷却システム及び空調制御プログラム
JP2010249492A (ja) * 2009-03-23 2010-11-04 Sanyo Electric Co Ltd 換気量推定演算システムおよび換気量推定演算装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55132319A (en) * 1979-03-29 1980-10-15 Nippon Denso Co Ltd Controlling method of air conditioning for vehicle
JPH10213372A (ja) * 1997-01-30 1998-08-11 Nakano Refrigerators Co Ltd 平型ショーケースの温度制御方法及び装置
JP2000088423A (ja) * 1998-09-18 2000-03-31 Tokyo Electric Power Co Inc:The 低温ショーケースの制御装置
JP2001082782A (ja) * 1999-09-13 2001-03-30 Toshiba Corp 空調制御装置
JP2004125288A (ja) * 2002-10-02 2004-04-22 Sanki Eng Co Ltd 空調システム
JP2004251559A (ja) * 2003-02-20 2004-09-09 Matsushita Electric Ind Co Ltd 空気調和機の制御装置及び制御方法
JP2010169388A (ja) * 2008-12-25 2010-08-05 Sanyo Electric Co Ltd 空調制御装置、冷却システム及び空調制御プログラム
JP2010249492A (ja) * 2009-03-23 2010-11-04 Sanyo Electric Co Ltd 換気量推定演算システムおよび換気量推定演算装置

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