WO2018003099A1 - Appareil de refroidissement - Google Patents

Appareil de refroidissement Download PDF

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Publication number
WO2018003099A1
WO2018003099A1 PCT/JP2016/069544 JP2016069544W WO2018003099A1 WO 2018003099 A1 WO2018003099 A1 WO 2018003099A1 JP 2016069544 W JP2016069544 W JP 2016069544W WO 2018003099 A1 WO2018003099 A1 WO 2018003099A1
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WO
WIPO (PCT)
Prior art keywords
load
cooling device
heat source
cooling
source device
Prior art date
Application number
PCT/JP2016/069544
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English (en)
Japanese (ja)
Inventor
靖 大越
雅夫 川▲崎▼
肇 藤本
拓也 伊藤
有悟 笹谷
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2018524690A priority Critical patent/JPWO2018003099A1/ja
Priority to PCT/JP2016/069544 priority patent/WO2018003099A1/fr
Publication of WO2018003099A1 publication Critical patent/WO2018003099A1/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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle

Definitions

  • the present invention relates to a cooling device for cooling load equipment.
  • a compression portion that compresses a refrigerant by a compressor
  • a heat exchange portion that condenses the compressed refrigerant
  • a cooling portion that cools the condensed antifreeze liquid
  • JP 63-198934 A Japanese Patent Application Laid-Open No. 11-101550
  • the cooling device in Patent Document 1 needs to verify and design the cooling device each time according to the load facility and application. In addition, since it is necessary to construct and verify the system locally, it is necessary to increase the cost of the cooling device itself, to design the system by on-site construction and instrumentation work, etc., making installation considerations complicated and increasing costs. It was.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cooling device that can be easily constructed and can efficiently operate the entire cooling device.
  • a cooling device is connected to a heat source device having a compressor that compresses a refrigerant and a first heat exchanger that condenses the refrigerant compressed by the compressor, and the heat source device via a refrigerant pipe, And a load cooling device having a second heat exchanger that cools the water or antifreeze liquid by the refrigerant flowing in from the refrigerant pipe, and the load cooling device is installed closer to the load facility than the heat source device. It is connected to a load side pipe having a pump for circulating water or antifreeze.
  • the load cooling device since the load cooling device is installed in a place closer to the load facility than the heat source device, the power for transporting the antifreeze liquid by the pump can be greatly reduced, and the operation of the entire cooling device is highly efficient. It can be carried out.
  • the pump power can be further reduced by optimally controlling the pump capacity in accordance with the load equipment.
  • Embodiment 1 is a schematic system diagram of a cooling device according to Embodiment 1 of the present invention. It is a schematic systematic diagram of a cooling device showing a first modification of the first embodiment of the present invention. It is a schematic system diagram of the cooling device showing the modification 2 of Embodiment 1 of the present invention. It is a schematic system diagram of the cooling device according to Embodiment 2 of the present invention. It is a schematic system diagram of the cooling device according to Embodiment 3 of the present invention. It is a schematic system diagram of the cooling device according to the fourth embodiment of the present invention. It is a schematic system diagram of the cooling device which shows the modification of Embodiment 4 of this invention.
  • FIG. 1 is a schematic system diagram of a cooling device according to Embodiment 1 of the present invention.
  • the cooling device according to the first embodiment includes, for example, a heat source device 10 installed in a machine room, and a load cooling device 20 connected to the heat source device 10 via a refrigerant pipe 15 and installed on the load facility side. Has been.
  • the heat source device 10 includes a compressor 11 that compresses refrigerant, a blower 13, and an air heat exchanger that is a first heat exchanger that exchanges heat between the refrigerant compressed by the compressor 11 and the air from the blower 13. 12, a control device 14 and the like.
  • An accumulator (not shown) that stores excess refrigerant is provided on the suction side of the compressor 11.
  • the control device 14 controls the operating frequency of the compressor 11, the rotational speed of the blower 13, the valve opening of the decompression device 22 described later, the capacity of the brine pump 25 that is a pump, and the like.
  • the operation frequency of the compressor 11 is controlled by the control device 14 via an inverter.
  • the load cooling device 20 is a decompression device 22 that expands and depressurizes the refrigerant flowing in via the refrigerant pipe 15, and a second heat exchange that cools the antifreeze liquid from the load facility by heat exchange with the refrigerant decompressed by the decompression device 22.
  • a cooling heat exchanger 21 that is a vessel, a temperature sensor 23 that detects the temperature of the antifreeze liquid cooled by the cooling heat exchanger 21, and the like are provided.
  • the load cooling device 20 is installed at a position closer to, for example, a refrigerator that is a load facility than the heat source device 10.
  • the load cooling device 20 is connected to the refrigerator via a load side pipe 24.
  • a brine pump 25 that circulates antifreeze liquid between the load cooling device 20 and the refrigerator is connected to the load side pipe 24.
  • water may be used instead of the antifreeze liquid.
  • the control device 14 described above is connected to a decompression device 22, a temperature sensor 23, a brine pump 25, and the like via a communication line 16 capable of transmitting and receiving signals.
  • the control device 14 controls the operating frequency of the compressor 11 and the capacity of the brine pump 25 according to the refrigerating capacity of the refrigerator. Further, the control device 14 controls the valve opening degree of the decompression device 22 so that the temperature of the antifreeze liquid detected by the temperature sensor 23 becomes the target temperature of the refrigerator.
  • the decompression device 22 may be installed in the heat source device 10.
  • the load cooling device 20 is only installed at a position closer to the refrigerator than the heat source device 10, so that the construction is easy, and the antifreeze liquid is conveyed by the brine pump 25. Power can be greatly reduced, and the entire cooling device can be operated with high efficiency.
  • conveyance power of the brine pump 25 can be further reduced by optimally controlling the capacity of the brine pump 25 according to the refrigerating capacity of the refrigerator.
  • FIG. 2 is a schematic system diagram of a cooling device showing a first modification of the first embodiment of the present invention.
  • symbol is attached
  • the cooling device in Modification 1 uses the heat source device 10a in which the refrigerant pipe 15a connected to the air heat exchanger 12 is extended and the air heat exchanger 12 and the blower 13 are installed outdoors. It is.
  • the air heat exchanger 12 since the air heat exchanger 12 is installed outdoors, the heat exchange efficiency is improved as compared with the first embodiment installed in the machine room.
  • FIG. 3 is a schematic system diagram of a cooling device showing a second modification of the first embodiment of the present invention.
  • symbol is attached
  • FIG. In the air heat exchanger 12 described in the first embodiment and the first modification, heat is exchanged with air from the blower 13, but as a second modification, a water heat exchanger 12a (first first) that exchanges heat with water. Equivalent to a heat exchanger).
  • the cooling device in Modification 2 uses the heat source device 10b including the water heat exchanger 12a connected to the water pipe 12b in which the water circulation circuit is formed.
  • the water heat exchanger 12a is installed either in the machine room or outdoors, and exchanges heat with water from the compressor 11 flowing in via the refrigerant pipe 15a.
  • the heat exchange efficiency is further improved as compared with the first modification.
  • FIG. FIG. 4 is a schematic system diagram of a cooling device according to Embodiment 2 of the present invention.
  • the cooling device according to the second embodiment includes a plurality of load cooling devices 20 that are connected to the refrigerant pipe 15 from the heat source device 10 via branch pipes 15b.
  • the plurality of load cooling devices 20 are installed near load facilities provided in different places. That is, the plurality of load cooling devices 20 are installed at positions closer to the refrigerator that is the load facility than the heat source device 10.
  • the plurality of load cooling apparatuses 20 are each connected to a refrigerator via a load side pipe 24.
  • Each load side pipe 24 is connected to a brine pump 25 that circulates antifreeze liquid between the load cooling device 20 and the refrigerator.
  • water may be used instead of the antifreeze liquid.
  • a plurality of load cooling apparatuses 20 are connected to the refrigerant pipe 15 from the heat source apparatus 10 via the branch pipes 15b.
  • the conveyance power of the antifreeze liquid by the brine pump 25 can be greatly reduced, and the operation of the entire cooling device can be improved. Can be done efficiently.
  • conveyance power of the brine pump 25 can be further reduced by optimally controlling the capacity of the brine pump 25 according to the refrigerating capacity of the refrigerator.
  • FIG. 5 is a schematic system diagram of a cooling device according to Embodiment 3 of the present invention.
  • the third embodiment is wired from the control device 14 of the heat source device 10 in a cooling device including a plurality of load cooling devices 20 connected to the refrigerant pipe 15 from the heat source device 10 via branch pipes 15b.
  • a branch communication line 16 a wired to the load cooling device 20 side is connected to one communication line 16.
  • Each branch communication line 16 a is connected to a decompression device 22, a temperature sensor 23, and a brine pump 25 provided in the load cooling device 20.
  • the control device 14 of the heat source device 10 operates the compressor 11 according to the refrigeration capacity of the refrigerator that is each load facility.
  • the valve opening degree of the decompression device 22 is controlled such that the frequency, the capacity of the brine pump 25, and the temperature of the antifreeze detected by the temperature sensor 23 become the target temperature. That is, the plurality of load cooling devices 20 are independently controlled by the control device 14.
  • the branch communication line 16a wired to each load cooling device 20 side is connected to one communication line 16 wired from the control device 14 of the heat source device 10, respectively. It is a configuration. For this reason, the heat source device 10 and the plurality of load cooling devices 20 can be controlled by a common controller. As a result, the design of instrumentation equipment that conventionally had to be designed and constructed for each load equipment becomes almost unnecessary, and the construction of system control in the cooling device is facilitated.
  • the wiring between the heat source device 10 and the plurality of load cooling devices 20 is connected by the communication line 16 and the branch communication line 16a, the wiring work can be easily performed, and the construction period can be shortened and the cost can be reduced. Reduction can be achieved.
  • FIG. FIG. 6 is a schematic system diagram of a cooling device according to Embodiment 4 of the present invention.
  • symbol is attached
  • two cooling devices according to the fourth embodiment are provided corresponding to the two heat source devices 10 and the two heat source devices 10, and are individually connected to the heat source device 10 via the refrigerant pipe 15.
  • the load cooling device 20a is provided as one unit.
  • the load cooling device 20a is connected to two cooling heat exchangers 21 (corresponding to the second heat exchanger) respectively connected to the two heat source devices 10 via the refrigerant piping 15, respectively connected to the refrigerant piping 15.
  • Two decompression devices 22 and two temperature sensors 23 for detecting the temperature of the antifreeze liquid cooled by the respective heat exchangers 21 for cooling are provided.
  • the cooling heat exchanger 21 is connected to the refrigerator via a load side pipe 24. This refrigerator is installed in different places.
  • the communication line 16 from the control device 14 provided in each of the heat source devices 10 is wired on the load cooling device 20 side.
  • Each communication line 16 is connected to a decompression device 22, a temperature sensor 23, and a brine pump 25 provided in the load cooling device 20a.
  • each heat source device 10 controls the operating frequency of the compressor 11 according to the refrigeration capacity of different refrigerators, and individually adjusts the capacity of the brine pump 25. Control.
  • Each control device 14 controls the valve opening degree of the decompression device 22 so that the temperature of the antifreeze liquid detected by each temperature sensor 23 becomes the respective target temperature.
  • the control device 14 of each heat source device 10 controls the operating frequency of the compressor 11 according to the refrigeration capacity of different refrigerators, and individually controls the brine pump 25.
  • the capacity is controlled, and the valve opening degree of the decompression device 22 is controlled so that the temperature of the antifreeze liquid detected by each temperature sensor 23 becomes the respective target temperature.
  • a common refrigerator may be connected to 20a. That is, the two load side pipes 24 from the two cooling heat exchangers 21 provided in the load cooling device 20a are connected to one refrigerator.
  • one heat source device 10 is used to cool one refrigerator, and the other heat source device 10 is stopped. If one heat source device 10 fails, the other heat source device 10 starts operation in conjunction with this failure, and the operation of the common refrigerator is continued.
  • Such a configuration can be applied to a refrigerator that does not want to stop the refrigeration operation, and the reliability is improved.
  • FIG. 7 is a schematic system diagram of a cooling device showing a modification of the fourth embodiment of the present invention.
  • the brine pump 25 is provided outside the load cooling device 20a.
  • the brine pump 25 is provided in the load cooling device 20a, and the operation of the brine pump 25 is frequency controlled. You may be made to do.
  • the brine pump 25 can be operated by frequency control, the brine pump 25 can be operated with a minimum amount of electric power, and a highly efficient operation as a cooling device can be performed.
  • the compressor 11 is operated by an inverter, but in addition to this, the blower 13 of the air heat exchanger 12 may be operated by an inverter.
  • the compressor 11 and the blower 13 By operating the compressor 11 and the blower 13 at an optimum frequency according to the load equipment, it is possible to perform a highly efficient operation according to the temperature of the antifreeze liquid.
  • a plate-type heat exchanger or a shell-and-tube heat exchanger is used depending on the use of the load cooling device 20, 20a, 20b and the size of the load facility. Either of these may be used. In this case, it is possible to obtain an optimum cooling device according to the use of the load cooling device 20, 20a, 20b and the size of the load facility, and it is possible to cope with the minimum capacity and installation space required for the load facility. Become.
  • the compressor 11 when operating a plurality of heat source devices 10 in combination, the compressor 11 is not operated according to the load facility, but is operated at a point where the frequency of the compressor 11 is high. You may make it control the number of. This control enables highly efficient operation of the entire cooling device.
  • 10, 10a, 10b heat source device 11 compressor, 12 air heat exchanger, 12a water heat exchanger, 12b water pipe, 13 blower, 14 control device, 15, 15a refrigerant pipe, 15b branch pipe, 16 communication line, 16a Branch communication line, 20, 20a, 20b load cooling device, 21 cooling heat exchanger, 22 decompression device, 23 temperature sensor, 24 load side piping, 25 brine pump.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Un appareil de refroidissement selon la présente invention comporte : un dispositif de source de chaleur ayant un compresseur qui comprime un réfrigérant et un premier échangeur de chaleur qui condense le réfrigérant comprimé par le compresseur; et un dispositif de refroidissement de charge ayant un second échangeur de chaleur qui est connecté au dispositif de source de chaleur par l'intermédiaire d'une tuyauterie de réfrigérant et qui refroidit l'eau ou le liquide antigel provenant d'une installation de charge au moyen du réfrigérant s'écoulant à travers la tuyauterie de réfrigérant. Le dispositif de refroidissement de charge est placé à un emplacement plus proche de l'installation de charge que du dispositif de source de chaleur, et est reliée à une tuyauterie côté charge qui comporte une pompe amenant l'eau ou le liquide antigel provenant de l'installation de charge à circuler.
PCT/JP2016/069544 2016-06-30 2016-06-30 Appareil de refroidissement WO2018003099A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018524690A JPWO2018003099A1 (ja) 2016-06-30 2016-06-30 冷却装置
PCT/JP2016/069544 WO2018003099A1 (fr) 2016-06-30 2016-06-30 Appareil de refroidissement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/069544 WO2018003099A1 (fr) 2016-06-30 2016-06-30 Appareil de refroidissement

Publications (1)

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WO2018003099A1 true WO2018003099A1 (fr) 2018-01-04

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PCT/JP2016/069544 WO2018003099A1 (fr) 2016-06-30 2016-06-30 Appareil de refroidissement

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JP (1) JPWO2018003099A1 (fr)
WO (1) WO2018003099A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2899341B2 (ja) * 1990-02-13 1999-06-02 松下冷機株式会社 多室冷暖房装置
JP2001235243A (ja) * 2000-02-21 2001-08-31 Sanyo Electric Co Ltd 冷凍装置
JP2007218469A (ja) * 2006-02-15 2007-08-30 Sanden Corp 冷却システム
JP5689079B2 (ja) * 2010-02-12 2015-03-25 三菱電機株式会社 冷凍サイクル装置
JP5774128B2 (ja) * 2011-12-16 2015-09-02 三菱電機株式会社 空気調和装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2899341B2 (ja) * 1990-02-13 1999-06-02 松下冷機株式会社 多室冷暖房装置
JP2001235243A (ja) * 2000-02-21 2001-08-31 Sanyo Electric Co Ltd 冷凍装置
JP2007218469A (ja) * 2006-02-15 2007-08-30 Sanden Corp 冷却システム
JP5689079B2 (ja) * 2010-02-12 2015-03-25 三菱電機株式会社 冷凍サイクル装置
JP5774128B2 (ja) * 2011-12-16 2015-09-02 三菱電機株式会社 空気調和装置

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