WO2012132131A1 - Control system for cooling devices - Google Patents

Control system for cooling devices 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
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PCT/JP2011/079076
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French (fr)
Japanese (ja)
Inventor
淳 大内
Original Assignee
三洋電機株式会社
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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/en
Publication of WO2012132131A1 publication Critical patent/WO2012132131A1/en

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    • 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

[Problem] To provide a control system for cooling devices, which is capable of appropriately preventing or eliminating the occurrence of poor cooling caused by direct sunlight without changing window glass and the like. [Solution] A control system (4) controls a plurality of showcases (A, B, C) for cooling commodities. An integrated controller (6) is provided with a direct sunlight time zone determination unit which, with respect to the respective showcases, determines time zones in which the showcases may be exposed to direct sunlight, a direct sunlight determination unit which determines whether or not the showcases are actually exposed to direct sunlight, and a control unit which controls the respective showcases on the basis of the contents of the determination by the direct sunlight determination unit.

Description

冷却機器の制御システムControl system for cooling equipment
　本発明は、店舗等に設置されたショーケース等の複数台の冷却機器を制御する制御システムに関するものである。 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.
　スーパーマーケットやコンビニエンスストア等の店舗（施設）には、複数台のショーケース（冷却機器）が設置されており、各ショーケースの陳列室内（被冷却空間）において商品（物品）を冷却し、温度を低く保ちながら陳列している。また、近年では複数台のショーケースを一括して制御する統合コントローラを店舗に設け、該統合コントローラから設定温度や霜取設定等の設定データを各ショーケースに送信し、各ショーケースからは温度や警報等の運転状態に関するデータを収集する集中制御が行われるようになって来ている。 Stores (facility) 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. In recent years, 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.
　また、店舗には窓ガラスから日光が射し込むため、例えば特許文献１では日射量が一定値以上の場合には、店舗の空調機の設定温度を下げる等の工夫が成されている。 In addition, since sunlight shines into the store from the window glass, for example, in Patent Document 1, when the amount of sunlight is equal to or greater than a certain value, a contrivance is made such as lowering the set temperature of the air conditioner in the store.
特開２００５－３７１０９号公報JP 2005-37109 A 特開２００４－１２３０１１号公報JP 2004-123011 A
　ここで、窓ガラスから射し込んだ日射が、店舗に設置されたショーケースに直射した場合、陳列室内の温度が上昇してしまう。その場合、例えば特許文献２のように窓ガラスに電圧を印加することで透光率が変化する調光ガラスを用い、電圧をガラスに付加することで透光率を変化させて日射を弱める方法もあるが、特許文献２のような車の窓ガラスの場合には有効であるものの、店舗の場合にはコストの面から非現実的である。 Here, if the solar radiation from the window glass shines directly on the showcase installed in the store, the temperature in the display room will rise. In that case, for example, a light control glass whose light transmittance is changed by applying a voltage to the window glass as in Patent Document 2, and a method of weakening solar radiation by changing the light transmittance by applying a voltage to the glass. However, although it is effective in the case of a car window glass as in Patent Document 2, in the case of a store, it is unrealistic in terms of cost.
　本発明は、係る従来の技術的課題を解決するために成されたものであり、施設の窓ガラス等を変更すること無く、日光の直射による冷却不良の発生を的確に防止若しくは解消することができる冷却機器の制御システムを提供するものである。 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.
　上記課題を解決するために、本発明の制御システムは、物品を冷却する複数台の冷却機器を制御するものであって、冷却機器が日光に直射される可能性がある時間帯を、各冷却機器についてそれぞれ判断する直射時間帯判断部と、冷却機器が実際に日光に直射されているか否かを判断する直射判断部と、この直射判断部の判断内容に基づいて冷却機器をそれぞれ制御する制御部とを備えたことを特徴とする。 In order to solve the above-described problems, 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.
　請求項２の発明の冷却機器の制御システムは、上記発明において直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部は、当該冷却機器の冷気循環ファンの回転数を増加させることを特徴とする。 In the cooling device control system according to the second aspect of the present invention, in the above invention, 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. When it is determined that it is a possible time zone, the control unit increases the number of rotations of the cool air circulation fan of the cooling device.
　請求項３の発明の冷却機器の制御システムは、上記各発明において直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部は、当該冷却機器の冷却設定温度を低下させることを特徴とする。 In the cooling device control system according to the third aspect of the present invention, in each of the above-mentioned inventions, 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. When it is determined that it is a time zone in which there is a possibility that the control device is to be operated, the control unit reduces the cooling set temperature of the cooling device.
　請求項４の発明の冷却機器の制御システムは、上記各発明において直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部は、当該冷却機器の冷却器に循環される冷媒量を増加させることを特徴とする。 In the cooling device control system according to the fourth aspect of the present invention, in each of the above-described inventions, 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. When it is determined that it is a time zone in which there is a possibility that the control device is, the control unit increases the amount of refrigerant circulated to the cooler of the cooling device.
　請求項５の発明の冷却機器の制御システムは、上記各発明において直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部は、当該冷却機器の照明装置を消灯し、若しくは、照度を低下させることを特徴とする。 In the cooling device control system according to the fifth aspect of the present invention, in each of the above-described inventions, 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. When it is determined that it is a time zone where there is a possibility that the control device is to be operated, the control unit turns off the lighting device of the cooling device or reduces the illuminance.
　請求項６の発明の冷却機器の制御システムは、上記各発明において直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部は、当該冷却機器の冷却器の霜取タイミングを遅延させることを特徴とする。 In the cooling device control system according to the sixth aspect of the present invention, in each of the above-mentioned inventions, 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. When it is determined that it is a time zone in which there is a possibility that the defrosting is performed, the control unit delays the defrosting timing of the cooler of the cooling device.
　請求項７の発明の冷却機器の制御システムは、上記各発明において直射判断部は、窓面の日射量、窓面の照度、窓面付近の温度、又は、窓に設けられたブラインドの使用状況のうちの何れか、若しくは、それらの組み合わせに基づいて冷却機器への日光の直射を判断することを特徴とする。 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.
　本発明によれば、物品を冷却する複数台の冷却機器を制御する制御システムにおいて、冷却機器が日光に直射される可能性がある時間帯を、各冷却機器についてそれぞれ判断する直射時間帯判断部と、冷却機器が実際に日光に直射されているか否かを判断する直射判断部と、この直射判断部の判断内容に基づいて冷却機器をそれぞれ制御する制御部とを備えているので、例えば、請求項２の発明の如く直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部が、当該冷却機器の冷気循環ファンの回転数を増加させるようにすれば、従来の如く窓ガラス等を変更すること無く、日光の直射による冷却機器の冷却不良の発生を未然に抑制若しくは解消することが可能となる。 According to the present invention, in a control system that controls a plurality of cooling devices that cool an article, 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. And 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, As in the invention of claim 2, the direct sunlight determination unit determines that the sunlight is actually shining on the cooling device, and 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.
　この場合、例えば冷却機器周辺の照度を個々に検出して日光の直射を判断しようとすると、当該冷却機器が設置された施設の照明等の影響から、判断が難しくなる。また、冷却機器のどの部分が日光に直射されるかは当該冷却機器が据え付けられた場所や時刻、季節によって変化するので、冷却機器のどの部分に照度等を検出する手段を取り付けるか決定することも困難であるが、本発明では直射時間帯判断部が冷却機器が日光に直射される可能性がある時間帯を各冷却機器についてそれぞれ判断し、且つ、直射判断部が請求項７の発明のような窓面の日射量や照度、窓面付近の温度、ブラインドの使用状況の何れかや組み合わせから冷却機器への日光の直射を判断するので、施設の照明等に影響されること無く日光の直射に対応して個々の冷却機器の制御を的確に実現することが可能となる。 In this case, for example, if the illuminance around the cooling device is individually detected to determine direct sunlight, the determination becomes difficult due to the influence of the lighting of the facility where the cooling device is installed. Also, which part of the cooling device is exposed to sunlight varies depending on the location, time, and season of installation of the cooling device, so determine which part of the cooling device is equipped with a means to detect illuminance, etc. However, in the present invention, 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.
　このことは逆に個々の冷却機器に対して照度等を検出する手段を設ける必要が無くなるということであるので、機器構成の簡素化によるコストの削減にも成る。 This means that it is not necessary to provide a means for detecting the illuminance or the like for each cooling device, and the cost can be reduced by simplifying the device configuration.
　また、制御部は日光の直射による冷却機器の制御をそれぞれの冷却機器について行うことになるので、日光が直射している冷却機器のみ、冷気循環ファンの回転数を増加させることができ、必要以上のエネルギー消費の増加も防止することができる。 In addition, since the 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.
　以上は、請求項３の発明の如く直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部が、当該冷却機器の冷却設定温度を低下させることによっても実現することができる。 As described above, as in the third aspect of the present invention, 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.
　また、請求項４の発明の如く直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部が、当該冷却機器の冷却器に循環される冷媒量を増加させることによっても実現することができる。 Further, as in the invention of claim 4, 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.
　更に、請求項５の発明の如く直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部が、当該冷却機器の照明装置を消灯し、若しくは、照度を低下させることによっても実現することができる。 Further, as in the invention of claim 5, 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, the control unit can also realize by turning off the lighting device of the cooling device or reducing the illuminance.
　更にまた、請求項６の発明の如く直射判断部が冷却機器に実際に日光が直射していると判断し、且つ、直射時間帯判断部が冷却機器に日光が直射する可能性がある時間帯であると判断した場合、制御部が、当該冷却機器の冷却器の霜取タイミングを遅延させることも有効である。 Furthermore, as in the invention of claim 6, 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.
本発明を適用した店舗の概略断面図である。It is a schematic sectional drawing of the store to which this invention is applied. 本発明の制御システムの構成図である。It is a block diagram of the control system of this invention. 図２の制御システムの統合コントローラに入力された各ショーケースが日光に直射される可能性がある時間帯に関するデータを示す図である。It is a figure which shows the data regarding the time slot | zone when each showcase input into the integrated controller of the control system of FIG. 2 may be exposed to sunlight. 日射計による窓垂直日射量の一例を示す図である。It is a figure which shows an example of the window vertical solar radiation amount by a solar radiation meter.
　以下、本発明の実施の形態について詳細に説明する。図１において、１はスーパーマーケットやコンビニエンスストア等の店舗（施設）であり、この店舗１には冷却機器の実施例としての複数台のショーケースＡ、Ｂ、Ｃ（図１ではＡ、Ｂのみ示す）が設置されている。２は店舗１の窓ガラス（窓面）であり、この窓ガラス２からは日光が入射する（図１に白抜き矢印で示す）。また、３は窓ガラス２の内側に設置された日射計（日射判断用計測器具）であり、窓ガラス２から店舗１内に入射する窓垂直日射量を検出する。 Hereinafter, embodiments of the present invention will be described in detail. In 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.
　各ショーケースＡ、Ｂ、Ｃは、それぞれ冷却器と冷気循環ファンを備えており、冷却器は減圧装置や電磁弁を介して店外に設置された冷凍機Ｒ（図２）と冷媒配管により接続されている。冷凍機には圧縮機、凝縮器等を備えており、これら圧縮機、凝縮器、減圧装置及び各冷却器は周知の冷媒回路を構成する。そして、圧縮機から吐出され、凝縮器で凝縮した冷媒は、減圧装置を介して各ショーケースＡ、Ｂ、Ｃの冷却器に分配供給される。 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.
　各ショーケースＡ、Ｂ、Ｃの冷却器にそれぞれ流入した冷媒はそこで蒸発することにより冷却効果を発揮する。各ショーケースＡ、Ｂ、Ｃの冷気循環ファンはこの冷却器と熱交換した冷気を陳列室内（被冷却空間）に循環することにより、陳列室内は冷却される。また、個々のショーケースＡ、Ｂ、Ｃの冷却器への冷媒循環は、陳列室内（被冷却空間）の温度等に基づいて電磁弁により制御され、これにより、各ショーケースＡ、Ｂ、Ｃの陳列室内は個々の冷却設定温度に冷却維持されることになる。また、各ショーケースＡ、Ｂ、Ｃには照明装置が設けられ、当該照明装置により陳列室内は照明される。 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). In addition, 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.
　次に、図２は実施例の店舗１におけるショーケースＡ、Ｂ、Ｃの制御システム４の構成図を示している。この図において６は店舗１に設置された統合コントローラであり、本発明における直射時間帯判断部、直射判断部、及び、制御部をその機能として有するものである。また、この統合コントローラ６は、当該店舗１に設置された複数台のショーケースＡ、Ｂ、Ｃ、前記冷凍機Ｒ、前記日射計３と通信線により接続されており、これら各機器に対して制御データを送信し、各機器からは計測データを受信して収集することで、これらの全機器を統合制御する。 Next, 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. In this figure, 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.
　この場合、各ショーケースＡ、Ｂ、Ｃや冷凍機Ｒに送信する制御データは、前記冷却設定温度、前記冷却器の霜取制御、冷気循環ファン制御、減圧装置制御、電磁弁制御等に関する設定データである。また、ショーケースＡ、Ｂ、Ｃや冷凍機Ｒから収集する計測データは、各ショーケースＡ、Ｂ、Ｃの陳列室内他各部の温度、冷凍機Ｒの各部の温度であり、日射計３から収集する計測データは前記窓垂直日射量の計測データである。 In this case, 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. Moreover, 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.
　また、統合コントローラ６は時間帯情報データベース７を有している。この時間帯情報データベース７には、各ショーケースＡ、Ｂ、Ｃ毎に、当該ショーケースが窓ガラス２から射し込む日光に直射される可能性がある時間帯が予め入力される。図３はこの時間帯情報データベース７に入力された実際のデータの例を示している。実施例の時間帯情報データベース７は、太陽の角度が変化する夏季、冬季、及び、それ以外の中間季（春季、秋季）の三つの季節に一年を区分し、各ショーケースＡ、Ｂ、Ｃについて、太陽が出ている場合に各季節毎に日光が直射する時間帯を予め確認しておいて入力する。 The integrated controller 6 has a time zone information database 7. In 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.
　実施例ではショーケースＡが図１のように最も窓ガラス２に近い位置に設置されているので、図１中にハッチングで示すように夏季でも１３時～１７時の時間帯で窓ガラス２から射し込む日光に直射される可能性があることが予め確認されて時間帯情報データベース７に入力される。また、ショーケースＡは冬季でも１３時～１６時の時間帯で日光に直射され、中間季には１３時～１６時半の時間帯で日光に直射される可能性があることが予め確認されて入力される。 In the embodiment, 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.
　また、窓ガラス２に対してショーケースＡより店内側に設置されたショーケースＢは、夏季には直射される可能性は無く、冬季に１５時～１６時半の時間帯で直射され、中間季には１５時～１７時の時間帯で直射される可能性があることが予め確認されて時間帯情報データベース７に入力される。尚、ショーケースＣについては店内奥に設置されているため、１年を通じて窓ガラス２からの日光に直射される可能性は無いと予め確認され、その旨時間帯情報データベース７に入力されている。 In addition, 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. In addition, 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. .
　尚、このように日光に直射される可能性を各ショーケースＡ、Ｂ、Ｃ毎に予め確認しておいて時間帯情報データベース７を構成する以外に、店舗１の図面データを統合コントローラ６が保持していれば、統合コントローラ６が当該店舗の緯度／経度より窓ガラス２からの日光の入射角を計算し、各ショーケースＡ、Ｂ、Ｃが日光に直射される可能性がある時間帯を自ら計算により導出して時間帯情報データベース７を構築するようにしても良い。 In addition to confirming the possibility of direct sunlight in each showcase A, B, and C in advance, and configuring the time zone information database 7, 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.
　以上の構成で、次に統合コントローラ６が実行する日光の直射に応じた制御について説明する。統合コントローラ６は日射計３が計測する窓垂直日射量に基づいてショーケースＡ等が実際に日光に直射されているか否かを判断する。図４は１日を通して日射計３が計測する窓ガラス２を通過後の日射量（窓垂直日射量）の変化を示している。 The control according to the direct sunlight which the integrated controller 6 performs next with the above structure is demonstrated. The integrated controller 6 determines whether or not the showcase A or the like is actually directly irradiated with sunlight based on the window vertical solar radiation amount measured by the solar radiation meter 3. 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.
　今、季節は夏季であり、実施例の一日は日の出近くの６：００頃から日射量が上昇していき、日没近くの１７：００頃に殆ど零になったものとする。実施例では統合コントローラ６の直射判断部は日射量が０．０６ｋＷ／平方メートル以上で実際にショーケースが日光に直射されていると判断するものとすると、統合コントローラ６は１２：４５付近から１６：３０まで実際にショーケースは日光に直射されると判断することになる。 Now, it is assumed that the season is summer, and 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. In the embodiment, assuming that 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.
　そして、現在の時刻が例えば１３：００になったものとすると、統合コントローラ６の直射時間帯判断部は時間帯情報データベース７に入力された情報に基づいて、ショーケースＡのみ日光に直射される可能性があり、ショーケースＢ、Ｃは可能性が無いと判断する（図３の左）。即ち、ショーケースＡ、Ｂ、Ｃ個々について日光が直射する可能性のある時間帯を判断する。 If the current time is, for example, 13:00, 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. There is a possibility that 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.
　統合コントローラ６は、直射時間帯判断部がショーケースＡが日光に直射される可能性がある時間帯であるものと判断し、且つ、上述したように直射判断部が日射計３の計測データに基づいて実際にショーケースが日光に直射されているものと判断した場合、現時点（１３：００）においてショーケースＡが実際に日光に直射されると判定して、制御部により当該ショーケースＡに制御データ（冷気循環ファン回転数）を送信して冷気循環ファンの回転数を増加させる（図１に制御対象として示す。尚、ショーケースＢは非制御）。 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).
　日光に直射されると、ショーケースＡの陳列室内には日射によるエネルギーが侵入するので、急激に冷却能力の不足が発生する危険性があるが、実施例のように冷気循環ファンの回転数を増加させれば、その分陳列室内への冷気循環量が増加するので、冷却能力が増大する。これにより、陳列室の温度上昇が未然に回避され、陳列室内に陳列された商品（物品）に損傷が生じる不都合が防止される。 When exposed to direct sunlight, energy from solar radiation enters the display room of showcase A, and there is a risk of sudden shortage of cooling capacity. If it is increased, the amount of cool air circulation into the display chamber is increased accordingly, so that the cooling capacity is increased. Thereby, the temperature rise of the display room is avoided in advance, and the inconvenience that the goods (articles) displayed in the display room are damaged is prevented.
　時間帯情報データベース７によるショーケースＡの直射可能性は１７時までであるが、日射計３の計測データによる実際の日射の判断は、１６：３０までであるので、統合コントローラ６は、係る冷気循環ファンの回転数増加制御を１６：３０まで継続し、その後は通常の制御に復帰する。上記の制御は他の季節についても同様に実行される。また、他のショーケースＢについても冬季と中間季には時間帯と日射量によって冷気循環ファンの回転数増加制御が実行されることになる。 Although the possibility of direct irradiation of showcase A by the time zone information database 7 is up to 17:00, the judgment of actual solar radiation by the measurement data of the solar radiation meter 3 is up to 16:30, so the integrated controller 6 The circulation fan rotation speed increase control is continued until 16:30, after which the normal control is restored. The above control is executed in the same manner for other seasons. Further, with respect to the other showcases B, the control for increasing the rotational speed of the cold air circulation fan is executed according to the time zone and the amount of solar radiation in the winter and intermediate seasons.
　このように、本発明の制御システム４では、統合コントローラ６がショーケースＡ～Ｃに日光が直射する可能性がある時間帯を、各ショーケースＡ、Ｂ、Ｃについてそれぞれ判断する直射時間帯判断部と、ショーケースＡ～Ｃが実際に日光に直射されているか否かを判断する直射判断部と、この直射判断部の判断内容に基づいてショーケースＡ、Ｂ、Ｃをそれぞれ制御する制御部とを備えており、直射判断部がショーケースＡ、Ｂ、Ｃに実際に日光が直射していると判断し、且つ、直射時間帯判断部が実施例のようにショーケースＡに日光が直射する可能性がある時間帯であると判断した場合、制御部が、当該ショーケースＡの冷気循環ファンの回転数を増加させるので、日光の直射によるショーケースＡの冷却不良の発生を未然に抑制若しくは解消することが可能となる。 As described above, in the control system 4 of the present invention, 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. If it is determined that it is a time zone that may occur, the 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.
　ここで、例えばショーケースＡ～Ｃ周辺の照度を各ショーケース個々に検出して日光の直射を判断しようとすると、ショーケースが設置された店舗には店内照明があるので、当該店内照明の影響から判断が難しくなる。また、ショーケースのどの部分が日光に直射されるかは当該ショーケースが据え付けられた場所や時刻、季節によって変化するので、ショーケースのどの部分に照度計を取り付けるか決定することも困難である Here, for example, if the illuminance around showcases A to C is detected for each showcase individually to determine direct sunlight, the store where the showcase is installed has in-store lighting. It becomes difficult to judge from. In addition, 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.
　しかしながら、本発明では統合コントローラ６の直射時間帯判断部が、ショーケースＡ、Ｂ、Ｃが日光に直射される可能性がある時間帯を各ショーケースＡ、Ｂ、Ｃについてそれぞれ判断し、且つ、直射判断部が窓ガラス２の日射量に基づいてショーケースＡ、Ｂ、Ｃへの日光の直射を判断するので、店舗の店内照明等に影響されること無く、日光の直射に対応して個々のショーケースＡ、Ｂ、Ｃの制御を的確に実現することが可能となる。また、このことは逆に個々のショーケースＡ、Ｂ、Ｃに対して照度計等を設ける必要が無くなるということであるので、機器構成の簡素化によるコストの削減にも成る。即ち、実施例の如く窓ガラス２に日射計３を設けてショーケースＡ、Ｂ、Ｃへの日光の直射を判断するようにすれば、窓ガラス２の陰にならない部分を選択して日射計３を設ければ問題無い。 However, in the present invention, 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. That is, if 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.
　また、統合コントローラ６の制御部は日光の直射によるショーケースＡ、Ｂ、Ｃの制御をそれぞれのショーケースについて行うことになるので、日光が直射しているショーケース（実施例ではＡ）のみ、冷気循環ファンの回転数を増加させることができ、必要以上のエネルギー消費の増加も防止することができる。 Moreover, since 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.
　尚、上記実施例ではショーケースＡ、Ｂ、Ｃが日光に直射される可能性がある時間帯であると判断され、且つ、実際に日光に直射されていることが判断された場合にショーケースの冷気循環ファンの回転数を増加させるようにしたが、それに限らず、統合コントローラ６の制御部が、当該ショーケースＡ（或いは、Ｂ、Ｃ）の前記冷却設定温度を低下させることによっても実現することができる。 In the above embodiment, 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. However, 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.
　また、同じく統合コントローラ６の制御部が、当該ショーケースＡ（或いは、Ｂ、Ｃ）の前記冷却器に循環される冷媒量を前記減圧装置及び電磁弁の制御によって増加させる（当該ショーケースＡに冷媒を集中的に供給する）ことによっても実現することができる。即ち、冷却器への冷媒循環量の増加によって冷却能力が増大するからである。 Similarly, 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.
　更に、同じく統合コントローラ６の制御部が、当該ショーケースＡ（或いは、Ｂ、Ｃ）の前記照明装置を消灯し、若しくは、照度を低下（蛍光灯の点灯本数の削減等）させることによっても実現することができる。即ち、照明装置の消灯若しくは照度低下によって、当該照明装置から陳列室内に発せられる熱量（熱負荷）が減少するからである。 Furthermore, the 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.
　更にまた、同じく統合コントローラ６の制御部が、当該ショーケースＡ（或いは、Ｂ、Ｃ）の前記冷却器の霜取タイミングを遅延させることも有効である。霜取中は陳列室内の冷却は行われないので、日射に晒されている間に霜取タイミングを迎える場合には、当該霜取タイミングを遅延させて、直射時間帯を外すことにより、陳列室内の温度上昇を抑えられるからである。 Furthermore, it 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.
　また、上記実施例では日射計３を用いて窓ガラス２からの日射量を計測し、該計測データに基づいて統合コントローラ６の直射判断部がショーケースへの実際の日光の直射を判断するようにしたが、それに限らず、照度計を用いて窓ガラス２付近の照度を計測し、照度が所定の閾値以上か否かで実際の日射の有無を判断しても良い。即ち、日射があれば窓ガラス２付近の照度が上昇するからである。 Moreover, in the said Example, 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. However, 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.
　また、同様に温度計を用いて窓ガラス２付近の温度を計測し、実際の日射の有無を判断しても良い。例えば、日射に晒される温度計（日射あり）と晒されない温度計（カバー等で覆う。常時日陰）を用意し、両者が計測する温度を比較して差が生じた場合には日射ありと判断することができるからである。 Similarly, 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.
　また、窓ガラス２にブラインドが設けられ、このブラインドの使用状況（閉じているか開いているか等）を検出することができれば、ブラインドの使用状況に応じて日光の直射の有無を判断しても良い。そして、これら窓ガラス２からの日射量、照度、温度、ブラインドの使用状況のうちの二つ若しくは三つ以上を組み合わせてショーケースＡ、Ｂ、Ｃが実際に日光に直射されているか否かを判断すれば、より確実性が向上する。 Moreover, if 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.
　更に、実施例では店舗に設置された複数台のショーケースＡ～Ｃと冷凍機Ｒ、これらを集中的に制御する統合コントローラ６、照度計３等により構成された制御システム４で本発明を説明したが、それに限らず、物品を冷却する複数台の冷却機器、例えば冷蔵庫や冷凍庫が日光の直射に晒される環境で使用される可能性がある施設における制御システムとしても本発明は有効である。 Further, in the embodiment, 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. However, 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.
　１　店舗
　２　窓ガラス
　３　日射計
　４　制御システム
　６　統合コントローラ
　７　時間帯情報データベース
　Ａ～Ｃ　ショーケース
　Ｒ　冷凍機 1 store 2 window glass 3 pyranometer 4 control system 6 integrated controller 7 time zone information database AC showcase R refrigerator

Claims (7)

  1. 　物品を冷却する複数台の冷却機器を制御する制御システムにおいて、
    　前記冷却機器が日光に直射される可能性がある時間帯を、前記各冷却機器についてそれぞれ判断する直射時間帯判断部と、
    　前記冷却機器が実際に日光に直射されているか否かを判断する直射判断部と、
    　該直射判断部の判断内容に基づいて前記冷却機器をそれぞれ制御する制御部とを備えたことを特徴とする冷却機器の制御システム。     In a control system for controlling a plurality of cooling devices for cooling an article,
    A direct time period determination unit that determines a time period during which the cooling device may be directly exposed to sunlight, for each of the cooling devices;
    A direct sunlight determination unit for determining whether or not the cooling device is actually directly exposed to sunlight;
    A control system for a cooling device, comprising: a control unit that controls each of the cooling devices based on the determination content of the direct-light determination unit.
  2. 　前記直射判断部が前記冷却機器に実際に日光が直射していると判断し、且つ、前記直射時間帯判断部が前記冷却機器に日光が直射する可能性がある時間帯であると判断した場合、前記制御部は、当該冷却機器の冷気循環ファンの回転数を増加させることを特徴とする請求項１に記載の冷却機器の制御システム。 When the direct-light determination unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determination unit determines that it is a time zone during which the sunlight may be directly radiated to the cooling device The control system for a cooling device according to claim 1, wherein the control unit increases the number of rotations of a cool air circulation fan of the cooling device.
  3. 　前記直射判断部が前記冷却機器に実際に日光が直射していると判断し、且つ、前記直射時間帯判断部が前記冷却機器に日光が直射する可能性がある時間帯であると判断した場合、前記制御部は、当該冷却機器の冷却設定温度を低下させることを特徴とする請求項１又は請求項２に記載の冷却機器の制御システム。 When the direct-light determination unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determination unit determines that it is a time zone during which the sunlight may be directly radiated to the cooling device The control unit for a cooling device according to claim 1, wherein the control unit reduces a cooling set temperature of the cooling device.
  4. 　前記直射判断部が前記冷却機器に実際に日光が直射していると判断し、且つ、前記直射時間帯判断部が前記冷却機器に日光が直射する可能性がある時間帯であると判断した場合、前記制御部は、当該冷却機器の冷却器に循環される冷媒量を増加させることを特徴とする請求項１乃至請求項３のうちの何れかに記載の冷却機器の制御システム。 When the direct-light determination unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determination unit determines that it is a time zone during which the sunlight may be directly radiated to the cooling device The control unit for a cooling device according to any one of claims 1 to 3, wherein the control unit increases an amount of refrigerant circulated to a cooler of the cooling device.
  5. 　前記直射判断部が前記冷却機器に実際に日光が直射していると判断し、且つ、前記直射時間帯判断部が前記冷却機器に日光が直射する可能性がある時間帯であると判断した場合、前記制御部は、当該冷却機器の照明装置を消灯し、若しくは、照度を低下させることを特徴とする請求項１乃至請求項４のうちの何れかに記載の冷却機器の制御システム。 When the direct-light determination unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determination unit determines that it is a time zone during which the sunlight may be directly radiated to the cooling device The control unit for a cooling device according to any one of claims 1 to 4, wherein the control unit turns off the illumination device of the cooling device or reduces the illuminance.
  6. 　前記直射判断部が前記冷却機器に実際に日光が直射していると判断し、且つ、前記直射時間帯判断部が前記冷却機器に日光が直射する可能性がある時間帯であると判断した場合、前記制御部は、当該冷却機器の冷却器の霜取タイミングを遅延させることを特徴とする請求項１乃至請求項５のうちの何れかに記載の冷却機器の制御システム。 When the direct-light determination unit determines that the sunlight is actually radiated to the cooling device, and the direct-light time zone determination unit determines that it is a time zone during which the sunlight may be directly radiated to the cooling device The said control part delays the defrosting timing of the cooler of the said cooling device, The control system of the cooling device in any one of the Claims 1 thru | or 5 characterized by the above-mentioned.
  7. 　前記直射判断部は、窓面の日射量、窓面の照度、窓面付近の温度、又は、窓に設けられたブラインドの使用状況のうちの何れか、若しくは、それらの組み合わせに基づいて前記冷却機器への日光の直射を判断することを特徴とする請求項１乃至請求項６のうちの何れかに記載の冷却機器の制御システム。 The direct-irradiation determining unit may be the cooling unit based on any one of the amount of solar radiation on the window surface, the illuminance on the window surface, the temperature in the vicinity of the window surface, the usage status of the blind provided on the window, or a combination thereof. The control system for a cooling device according to any one of claims 1 to 6, wherein direct sunlight is judged on the device.
PCT/JP2011/079076 2011-03-28 2011-12-15 Control system for cooling devices WO2012132131A1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
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JPS55132319A (en) * 1979-03-29 1980-10-15 Nippon Denso Co Ltd Controlling method of air conditioning for vehicle
JPH10213372A (en) * 1997-01-30 1998-08-11 Nakano Refrigerators Co Ltd Method and apparatus for controlling temperature of flat type display case
JP2000088423A (en) * 1998-09-18 2000-03-31 Tokyo Electric Power Co Inc:The Controller for low temperature showcase
JP2001082782A (en) * 1999-09-13 2001-03-30 Toshiba Corp Airconditioning controller
JP2004125288A (en) * 2002-10-02 2004-04-22 Sanki Eng Co Ltd Air conditioning system
JP2004251559A (en) * 2003-02-20 2004-09-09 Matsushita Electric Ind Co Ltd Controlling equipment and control process of air conditioner
JP2010169388A (en) * 2008-12-25 2010-08-05 Sanyo Electric Co Ltd Air conditioning control device, cooling system, and air-conditioning control program
JP2010249492A (en) * 2009-03-23 2010-11-04 Sanyo Electric Co Ltd Ventilation amount estimating computing system and ventilation amount estimating computing unit

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 (en) * 1997-01-30 1998-08-11 Nakano Refrigerators Co Ltd Method and apparatus for controlling temperature of flat type display case
JP2000088423A (en) * 1998-09-18 2000-03-31 Tokyo Electric Power Co Inc:The Controller for low temperature showcase
JP2001082782A (en) * 1999-09-13 2001-03-30 Toshiba Corp Airconditioning controller
JP2004125288A (en) * 2002-10-02 2004-04-22 Sanki Eng Co Ltd Air conditioning system
JP2004251559A (en) * 2003-02-20 2004-09-09 Matsushita Electric Ind Co Ltd Controlling equipment and control process of air conditioner
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JP2010249492A (en) * 2009-03-23 2010-11-04 Sanyo Electric Co Ltd Ventilation amount estimating computing system and ventilation amount estimating computing unit

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