US20070028631A1 - Cooling System - Google Patents

Cooling System Download PDF

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Publication number
US20070028631A1
US20070028631A1 US11/459,930 US45993006A US2007028631A1 US 20070028631 A1 US20070028631 A1 US 20070028631A1 US 45993006 A US45993006 A US 45993006A US 2007028631 A1 US2007028631 A1 US 2007028631A1
Authority
US
United States
Prior art keywords
cooling system
brine
heat exchanger
circuit
blower
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US11/459,930
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English (en)
Inventor
Toshiyuki Fukuda
Makoto Kobayashi
Kazumasa Takada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanden Corp
Original Assignee
Sanden Corp
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 Sanden Corp filed Critical Sanden Corp
Assigned to SANDEN CORPORATION reassignment SANDEN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUKUDA, TOSHIYUKI, KOBAYASHI, MAKOTO, TAKADA, KAZUMASA
Publication of US20070028631A1 publication Critical patent/US20070028631A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/22—Refrigeration systems for supermarkets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2106—Temperatures of fresh outdoor air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to a cooling system using brine.
  • a cooling system including a refrigerant circuit that has a compressor, a condenser, and an expansion valve, a brine circuit that has a pump and a cooler, and a first heat exchanger shared by the refrigerant circuit and the brine circuit.
  • the cooling system performs, in the first heat exchanger, heat exchange between a refrigerant flowing on a downstream side of the expansion valve of the refrigerant circuit and brine flowing on a downstream side of the cooler of the brine circuit to cool the brine.
  • the cooling system supplies the brine cooled to the cooler to cool articles stored in an apparatus, for example, a showcase, in which the cooler is set.
  • the cooling system using brine is a cooling system proposed in response to the request for the post-Freon process or the Freon-saving in recent years.
  • energy consumption is large compared with the conventional direct expansion type cooling system.
  • the cooling system of the invention includes: a refrigerant circuit that has a compressor, a condenser, and an expansion valve; a brine circuit that has a cooler and a pump for circulating brine; a first heat exchanger that is shared by the refrigerant circuit and the brine circuit and performs heat exchange between a refrigerant flowing on a downstream side of the expansion valve of the refrigerant circuit and the brine flowing on a downstream side of the cooler of the brine circuit; and a second heat exchanger that is provided between the cooler and the first heat exchanger and performs heat exchange between the brine and the outdoor air.
  • the cooling system for example, in winter when the outdoor air temperature is low, heat exchange is performed between the brine and the outdoor air by the second heat exchanger to cool the brine.
  • the cooling system can lower operating ratios of the compressor and the like by cooling the brine using the outdoor air. Since the operating ratios of the compressor and the like are lowered, the cooling system can reduce energy consumption at the time of system operation. Since the energy consumption at the time of system operation is reduced, the cooling system can realize running cost saving.
  • FIG. 1 is an overall diagram of a cooling system of the invention
  • FIG. 2 is a flowchart showing control of the cooling system shown in FIG. 1 ;
  • FIG. 3 is a diagram for explaining operations of the cooling system shown in FIG. 1 ;
  • FIG. 4 is a diagram for explaining operations of the cooling system shown in FIG. 1 ;
  • FIG. 5 is a diagram for explaining operations of the cooling system shown in FIG. 1 ;
  • FIG. 6 is an overall diagram according to another embodiment of the cooling system shown in FIG. 1 ;
  • FIG. 7 is an overall diagram according to still another embodiment of the cooling system shown in FIG. 1 ;
  • FIG. 8 is a diagram for explaining operations of the cooling system shown in FIG. 1 .
  • FIG. 1 to FIG. 5 shows a preferred embodiment of the invention.
  • the cooling system has a refrigerant circuit 10 , a brine circuit 20 , and a first heat exchanger 30 .
  • the refrigerant circuit 10 has a compressor 11 , a condenser 12 , and an expansion valve 13 .
  • a refrigerant circulates to the compressor 11 , the condenser 12 , the expansion valve 13 , the first heat exchanger 30 , and the compressor 11 in this order.
  • the condenser 12 has a first blower 12 a .
  • the first blower 12 a forcibly brings the outdoor air into contact with the condenser 12 .
  • the refrigerant used in the refrigerant circuit 10 is Freon, non-Freon (e.g., ammonium), or the like.
  • the brine circuit 20 has a pump 21 , a cooler 22 , and a second heat exchanger 23 for performing heat exchange between the brine and the outdoor air.
  • the brine circulates to the pump 21 , the cooler 22 , the second heat exchanger 23 , the first heat exchanger 30 , and the pump 21 in this order.
  • the brine used in the brine circuit 20 is, for example, a calcium chloride solution.
  • the pump 21 is provided between the first heat exchanger 30 and the cooler 22 and circulates the brine to the brine circuit 20 .
  • a first electromagnetic valve 21 a is provided between the pump 21 and the cooler 22 .
  • the cooler 22 cools the inside of a showcase 22 b in which articles and the like are stored.
  • the cooler 22 is provided between the pump 21 and the second heat exchanger 23 and set in the showcase 22 b .
  • the cooler 22 has a second blower 22 a for facilitating cooling in the showcase 22 b.
  • the second heat exchanger 23 is provided between the cooler 22 and the first heat exchanger 30 .
  • the second heat exchanger 23 has a third blower 23 b .
  • the third blower 23 b forcibly brings the outdoor air into contact with the second heat exchanger 23 .
  • a by-pass path 24 is provided in parallel with the second heat exchanger 23 .
  • a second electromagnetic valve 23 a serving as means for switching the circulation of the brine is provided upstream the second heat exchanger 23 .
  • a third electromagnetic valve 24 a serving as means for switching the circulation of the brine is provided on the by-pass path 24 .
  • the second electromagnetic valve 23 a and the third electromagnetic valve 24 a switch a circulation path of the brine to one of the second heat exchanger 23 and the by-pass paths 24 .
  • the first heat exchanger 30 is shared by the refrigerant circuit 10 and the brine circuit 20 .
  • the first heat exchanger 30 performs heat exchange between the refrigerant flowing on a downstream side of the expansion valve 13 of the refrigerant circuit 10 and the brine flowing on a downstream side of the cooler 22 of the brine circuit 20 .
  • the first heat exchanger 30 is provided between the expansion valve 13 and the compressor 11 in the refrigerant circuit 10 and is provided between the second heat exchanger 23 and the cooler 22 in the brine circuit 20 .
  • the refrigerant circuit 10 , the first heat exchanger 30 , the pump 21 , the second heat exchanger 23 , the electromagnetic valves 23 a and 24 a , and the third blower 23 b are set outside a room (see a square indicated by an alternate long and two dashes line shown in FIG. 1 ).
  • the showcase 22 b that has the cooler 22 and the second blower 22 a and the first electromagnetic valve 21 a are set inside the room.
  • a controller 40 includes a microcomputer, various drivers, and the like.
  • Two predetermined outdoor temperatures T 1 and T 2 (T 1 >T 2 ), which are temperatures for judgment in switching of operation, and the like are stored in the controller 40 .
  • the controller 40 controls, on the basis of an outdoor temperature T detected by a not-shown temperature sensor, the compressor 11 , the first blower 12 a , the expansion valve 13 , the pump 21 , the second blower 22 a , the third blower 23 b , and the electromagnetic valves 21 a , 23 a , and 24 a.
  • the cooling system judges whether the outdoor temperature T is equal to or higher than the predetermined outdoor temperature T 1 , for example, 5° C. (step S 1 ).
  • the predetermined outdoor temperature T 1 is, for example, temperature set according to temperature in the showcase 22 b when it is desired to maintain the temperature in the showcase 22 b at 5° C.
  • step S 2 When the outdoor temperature T is equal to or higher than the predetermined outdoor temperature T 1 in step S 1 , the cooling system performs a normal operation (step S 2 ).
  • the cooling system in the normal operation opens the first electromagnetic valve 21 a and the third electromagnetic valve 24 a and closes the second electromagnetic valve 23 a to circulate the brine to the by-pass path 24 (see a solid line arrow in FIG. 3 ).
  • the refrigerant circuit 10 circulates the refrigerant in a state in which a capacity of the compressor 11 is controlled to a maximum by the controller 40 (see a broken line arrow in FIG. 3 ).
  • the brine circuit 20 circulates the brine in a state in which the operation of the third blower 23 b is stopped by the controller 40 and an amount of circulation by the pump 21 is controlled to be a maximum.
  • first heat exchanger 30 heat exchange is performed between the brine after circulating through the by-pass path 24 and the refrigerant circulating through the refrigerant circuit 10 .
  • the brine subjected to the heat exchange in the first heat exchanger 30 is supplied to the cooler 22 in the showcase 22 b , articles stored in the showcase 22 b are cooled.
  • step S 1 the cooling system judges whether the outdoor temperature T is equal to or higher than the predetermined outdoor temperature T 2 and lower than the predetermined outdoor temperature T 1 , for example, equal to or higher than 0° C. and lower than 5° C. (step S 3 ).
  • step S 4 When the outdoor temperature T is equal to or higher than the predetermined outdoor temperature T 2 and is lower than the predetermined outdoor temperature T 1 in step S 3 , the cooling system performs a light-load operation (step S 4 ).
  • the cooling system in the light-load operation opens the first electromagnetic valve 21 a and the second electromagnetic valve 23 a and closes the third electromagnetic valve 24 a .
  • the refrigerant circuit 10 circulates the refrigerant in a state in which a capacity of the compressor 11 is controlled to about half compared with that in the normal operation by the controller 40 (see a broken line arrow in FIG. 4 ).
  • the brine circuit 20 circulates the brine in a state in which an amount of circulation by the pump 21 is controlled to about two third compared with that in the normal operation and an air quantity of the third blower 23 b is controlled to a maximum by the controller 40 (see a solid line arrow in FIG. 4 ).
  • the second heat exchanger 23 heat exchange is performed between the brine and the outdoor air.
  • heat exchange is performed between the brine and the refrigerant circulating through the refrigerant circuit 10 .
  • the brine subjected to the heat exchange in the second heat exchanger 23 and the first heat exchanger 30 is supplied to the cooler 22 in the showcase 22 b . Consequently, the articles stored in the showcase 22 b are cooled.
  • the cooling system judges whether the outdoor temperature T is lower than the predetermined outdoor temperature T 2 , for example, 0° C. (step S 5 ).
  • the cooling system performs an individual operation of only the brine circuit 20 (step S 6 ).
  • step S 6 The individual operation in step S 6 will be explained with reference to FIG. 5 .
  • the cooling system in the individual operation opens the first electromagnetic valve 21 a and the second electromagnetic valve 23 a and closes the third electromagnetic valve 24 a .
  • the refrigerant circuit 10 stops the operation of the compressor 11 with the controller 40 to stop the circulation of the refrigerant.
  • the brine circuit 20 circulates the brine in a state in which an amount of circulation by the pump 21 is controlled to about half compared with that in the normal operation and an air quantity of the third blower 23 b is controlled to about half compared with that in the normal operation by the controller 40 (see a solid line arrow in FIG. 5 ).
  • heat exchange is performed between the brine and the outdoor air.
  • the brine subjected to the heat exchange in the second heat exchanger 23 is supplied to the cooler 22 in the showcase 22 b . Consequently, the articles stored in the showcase 22 b are cooled. Further, the cooling system controls an air quantity of the third blower 23 b to about half compared with that in the normal operation to prevent the second heat exchanger 23 from being excessively cooled.
  • the outdoor temperature T is temperature considerably lower than the predetermined outdoor temperature T 2 , for example, ⁇ 5° C. or ⁇ 10° C., it is possible to perform sufficient heat exchange in the second heat exchanger 23 even in a state in which the third blower 23 b is stopped.
  • the cooling system heat exchange is performed between the brine and the outdoor air by the second heat exchanger 23 to cool the brine.
  • the cooling system can lower operating ratios of the compressor 11 and the like by cooling the brine using the outdoor air. Since the operating ratios of the compressor 11 and the like are lowered, the cooling system can reduce energy consumption at the time of system operation. Since the energy consumption at the time of system operation is reduced, the cooling system can realize running cost saving.
  • the cooling system controls the compressor 11 to reduce a capacity thereof and controls the pump 21 with the controller 40 to reduce an amount of circulation by the pump 21 .
  • the cooling system can reduce energy consumption of the brine circuit 20 at the time of system operation by controlling the compressor 11 and the pump 21 .
  • the cooling system completely stops the operation of the compressor 11 .
  • the cooling system can reduce energy consumption of the refrigerant circuit 10 to zero by completely stopping the operation of the compressor 11 .
  • the cooling system controls the pump 21 with the controller 40 to reduce an amount of circulation by the pump 21 .
  • the cooling system can reduce energy consumption of the brine circuit 20 at the time of system operation by controlling the pump 21 .
  • the cooling system controls the third blower 23 b with the controller 40 to reduce an air quantity.
  • the cooling system can further reduce energy consumption of the brine circuit 20 at the time of system operation and prevent the second heat exchanger 23 from being excessively cooled by controlling the third blower 23 b .
  • the cooling system can control the fall in viscosity of the brine circulating through the second heat exchanger 23 and prevent the fall in circulation speed of the brine in the brine circuit 20 by preventing excessive cooling of the second heat exchanger 23 .
  • the second heat exchanger 23 has the third blower 23 b , heat exchange between the brine and the outdoor air is facilitated in the second heat exchanger 23 . Since the heat exchange between the brine and the outdoor air is facilitated in the second heat exchanger 23 , the cooling system can efficiently perform heat exchange of the brine circulating through the second heat exchanger 23 .
  • the cooling system can surely perform heat exchange between the brine and the outdoor air.
  • the cooling system can prevent the refrigerant from adversely affecting a person or the like present in the room.
  • the cooling system can circulate the brine to one of the second heat exchanger 23 and the by-pass path 24 . Consequently, the cooling system can select, according to the outdoor temperature T, whether the second heat exchanger 23 should be used.
  • FIG. 6 shows another preferred embodiment of the invention.
  • Components identical with those of the cooling system shown in FIG. 1 to FIG. 5 are denoted by the identical reference numerals and signs. Explanations of the components are omitted.
  • a cooling system using brine shown in FIG. 6 is different from the cooling system shown in FIG. 1 to FIG. 5 in that the cooling system has a three-way valve 33 a in order to switch a path, through which the brine circulates, to one of the second heat exchanger 23 and the by-pass path 24 .
  • Other actions and effects of this cooling system are the same as those of the cooling system shown in FIG. 1 to FIG. 5 .
  • FIG. 7 shows still another preferred embodiment of the invention.
  • Components identical with those of the cooling system shown in FIG. 1 to FIG. 5 are denoted by the identical reference numerals and signs. Explanations of the components are omitted.
  • a cooling system shown in FIG. 7 is different from the cooling system shown in FIG. 1 to FIG. 5 in that only the second heat exchanger 23 is provided outside the room (see a square indicated by an alternate long and two dashes line shown in FIG. 7 ). Other actions and effects of this cooling system are the same as those of the cooling system shown in FIG. 1 to FIG. 5 .
  • temperature for judging switching of operation by the controller 40 may be temperature of the brine that has passed through the cooler 22 .
  • the cooling system opens the first electromagnetic valve 21 a and the second electromagnetic valve 23 a and closes the third electromagnetic valve 24 a . Consequently, after the brine circulates to the second heat exchanger 23 , heat exchange is performed between the outdoor air and the brine in the second heat exchanger 23 . The brine subjected to the heat exchange in the second heat exchanger 23 is fed into the cooler 22 .
  • the cooling system opens the first electromagnetic valve 21 a and the third electromagnetic valve 24 a and closes the second electromagnetic valve 23 a . Consequently, after the brine circulates to the by-pass path 24 , the brine not subjected to the heat exchange in the second heat exchanger 23 is fed into the cooler 22 .
  • the cooling system may open both the second electromagnetic valve 23 a and the third electromagnetic valve 24 a and divide the brine to both the second heat exchanger 23 and the by-pass path 24 .
  • This cooling system can control the cooling of the brine by the second heat exchanger 23 by adjusting respective flow rates of the brines circulating to the second heat exchanger 23 and the by-pass path 24 .
  • the brine circulating to the second heat exchanger 23 and the brine circulating to the by-pass path 24 merge on an upstream side of the first heat exchanger 30 .
  • the brines having a temperature difference are mixed. Since the brines having a temperature difference are mixed, the cooling system can control the fall in the viscosity of the brine and prevent the fall in circulation speed of the brine in the brine circuit 20 .
US11/459,930 2005-08-08 2006-07-25 Cooling System Abandoned US20070028631A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005229571A JP2007046810A (ja) 2005-08-08 2005-08-08 ブライン式冷却システム
JP2005229571 2005-08-08

Publications (1)

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US20070028631A1 true US20070028631A1 (en) 2007-02-08

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US11/459,930 Abandoned US20070028631A1 (en) 2005-08-08 2006-07-25 Cooling System

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JP (1) JP2007046810A (ja)
CN (1) CN1912512A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070131408A1 (en) * 2002-04-29 2007-06-14 Bergstrom, Inc. Vehicle Air Conditioning and Heating System Providing Engine On and Off Operation
US20110308263A1 (en) * 2009-03-26 2011-12-22 Mitsubishi Electric Corporation Information transfer system for refrigeration air-conditioning apparatus
US20140223940A1 (en) * 2011-12-16 2014-08-14 Mitsubishi Electric Corporation Air-conditioning apparatus
EP3076106A3 (de) * 2015-03-30 2016-11-23 Viessmann Werke GmbH & Co. KG Kühleinheit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010007985A (ja) * 2008-06-27 2010-01-14 Hoshizaki Electric Co Ltd 冷却装置
JP5180130B2 (ja) * 2009-03-27 2013-04-10 三機工業株式会社 水蒸気圧縮冷凍機システム
TR200905249A2 (tr) * 2009-07-06 2011-01-21 Digitech Digital Teknoloj� San.Ve T�Caret L�M�Ted ��Rket� Soğuk akümülasyon tekniği ile iklim simülasyon sistemi.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6016662A (en) * 1996-06-03 2000-01-25 Denso Corporation Vehicular air conditioning apparatus for effectively cooling a main cooling unit and an additional cooling unit
US6405793B1 (en) * 2000-05-03 2002-06-18 Delphi Technologies, Inc. Secondary loop system for passenger compartment heating and cooling
US6749016B2 (en) * 2002-01-14 2004-06-15 Smc Kabushiki Kaisha Brine temperature control apparatus using a three-way proportional valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3695888B2 (ja) * 1997-03-31 2005-09-14 三洋電機株式会社 ブラインを用いた冷却システム
JP2001201232A (ja) * 2000-01-17 2001-07-27 Sanyo Electric Co Ltd ブラインショーケース
JP2002151638A (ja) * 2000-11-08 2002-05-24 Hitachi Ltd 電子機器の冷却装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6016662A (en) * 1996-06-03 2000-01-25 Denso Corporation Vehicular air conditioning apparatus for effectively cooling a main cooling unit and an additional cooling unit
US6405793B1 (en) * 2000-05-03 2002-06-18 Delphi Technologies, Inc. Secondary loop system for passenger compartment heating and cooling
US6749016B2 (en) * 2002-01-14 2004-06-15 Smc Kabushiki Kaisha Brine temperature control apparatus using a three-way proportional valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070131408A1 (en) * 2002-04-29 2007-06-14 Bergstrom, Inc. Vehicle Air Conditioning and Heating System Providing Engine On and Off Operation
US9694651B2 (en) * 2002-04-29 2017-07-04 Bergstrom, Inc. Vehicle air conditioning and heating system providing engine on and off operation
US20110308263A1 (en) * 2009-03-26 2011-12-22 Mitsubishi Electric Corporation Information transfer system for refrigeration air-conditioning apparatus
US9121624B2 (en) * 2009-03-26 2015-09-01 Mitsubishi Electric Corporation Information transfer system for refrigeration air-conditioning apparatus
US20140223940A1 (en) * 2011-12-16 2014-08-14 Mitsubishi Electric Corporation Air-conditioning apparatus
US10544973B2 (en) * 2011-12-16 2020-01-28 Mitsubishi Electric Corporation Air-conditioning apparatus with temperature controlled pump operation
EP3076106A3 (de) * 2015-03-30 2016-11-23 Viessmann Werke GmbH & Co. KG Kühleinheit

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JP2007046810A (ja) 2007-02-22
CN1912512A (zh) 2007-02-14

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AS Assignment

Owner name: SANDEN CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FUKUDA, TOSHIYUKI;KOBAYASHI, MAKOTO;TAKADA, KAZUMASA;REEL/FRAME:017995/0884

Effective date: 20060627

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION