WO2006120756A1 - Materiau de reserve froide, procede de reserve froide avec materiau de reserve froide, et cycle de refroidissement utilisant un materiau de reserve froide - Google Patents

Materiau de reserve froide, procede de reserve froide avec materiau de reserve froide, et cycle de refroidissement utilisant un materiau de reserve froide Download PDF

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Publication number
WO2006120756A1
WO2006120756A1 PCT/JP2005/009005 JP2005009005W WO2006120756A1 WO 2006120756 A1 WO2006120756 A1 WO 2006120756A1 JP 2005009005 W JP2005009005 W JP 2005009005W WO 2006120756 A1 WO2006120756 A1 WO 2006120756A1
Authority
WO
WIPO (PCT)
Prior art keywords
cold
electrolyte salt
cryogen
cold insulation
agent
Prior art date
Application number
PCT/JP2005/009005
Other languages
English (en)
Japanese (ja)
Inventor
Masao Umemoto
Original Assignee
Toshin Life System Co., Ltd.
Sato, Shinya
Kurihara, Isao
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 Toshin Life System Co., Ltd., Sato, Shinya, Kurihara, Isao filed Critical Toshin Life System Co., Ltd.
Priority to PCT/JP2005/009005 priority Critical patent/WO2006120756A1/fr
Publication of WO2006120756A1 publication Critical patent/WO2006120756A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials

Definitions

  • the present invention relates to a cold-reserving agent for keeping refrigerated frozen foods such as fresh foods and the like, and a method for keeping foods cold using a cold-retaining agent.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a cold-reserving agent in place of dry ice and to provide a cold-retaining method using the cold-retaining agent. .
  • An object of the present invention is to provide a cryogen capable of maintaining a low temperature state for a long time.
  • the above object of the present invention is a first electrolyte salt and an electrolyte salt different from the first electrolyte salt.
  • the above-mentioned object of the present invention is that the first electrolyte salt is sodium chloride or ammonium chloride, and the second electrolyte salt is chloride U-um or ammonium chloride, or the first electrolyte salt.
  • the salt is selected from the group consisting of magnesium chloride, calcium chloride, and sodium nitrate, and the second electrolyte salt is sodium nitrate, sodium chloride, potassium chloride, magnesium chloride, chloride It is achieved more effectively by being selected from the group consisting of the force lucivum S and ammonium chloride.
  • An object of the present invention is to provide a cryogen that can maintain a low temperature state for a long time.
  • the above object of the present invention is to provide water, urea, a first electrolyte salt, and the first electrolyte salt.
  • a cryogen containing a second electrolyte salt that can be mixed with a different electrolyte salt, and the total amount of the first electrolyte salt and the second electrolyte salt is 1 2 with respect to 1 L of water. 5 to 25% by weight, and the total amount ratio of the urea and the electrolyte salt composed of the first electrolyte salt and the second electrolyte salt is 1 L of water. Therefore, it can be achieved more effectively by adjusting to 1: 9 to 25.
  • the above object of the present invention is to provide the first electrolyte salt and the second electrolyte salt from sodium chloride, magnesium chloride, calcium chloride, sodium nitrate, potassium chloride, and ammonium chloride. It is achieved more effectively by selecting from the group.
  • the present invention is also effectively achieved by dissolving magnesium chloride or calcium chloride in 1 L of water so that the concentration is 12.5 to 25% by weight.
  • the object of the present invention is to provide a method for freezing the inside of the cold storage by using the above-mentioned cold storage agent in a frozen state, and the above object of the present invention is to provide the frozen cold storage agent in the cold storage.
  • the above object of the present invention can be achieved more effectively by installing the refrigerator in the side or lower part of the refrigerator, where the refrigerator is an upper door type.
  • the above object of the present invention can be achieved more effectively by installing the cryogen so that the ratio of the volume of the cryogen to the total volume of the cool box is 0.15 or more.
  • the present invention freezes and stores the above-mentioned cryogen, exchanges the dissolved cryogen and the stored cryogen, and freezes the melted cryogen, so that it is more efficiently kept cool for a long time.
  • the above-mentioned object of the present invention is to provide a method for maintaining the temperature of the cold-freezing agent in a quick freezer having a compressor of 100 W or more, and the cold-retaining agents are not in close contact with each other. Well, install the cold insulation agent, Inside the freezer, s
  • the step of freezing the cryogen, and extracting the cryogen frozen in this step from the internal force of the rapid freezer and storing it in the storage is more effective to use a cooling cycle comprising the step of putting the cryogen stored in the cold storage into the quick freezer and storing the cold storage agent stored in the storage into the cold storage.
  • FIG. 1 is a side view showing a first embodiment of a cooling method using the cooling agent of the present invention.
  • FIG. 2 is a side view showing a second embodiment of a cooling method using the cooling agent of the present invention.
  • FIG. 3 is a side view showing a third embodiment of a cooling method using the cooling agent of the present invention. It is the graph which showed the temperature change of the refrigerant
  • the present invention is a cryogen dissolved in water so that the total amount of the first electrolyte salt and the second electrolyte salt becomes a constant weight, and is characterized by being able to maintain a low temperature state for a long time. . Moreover, the low temperature state can be maintained for a long time by further containing urea.
  • the cryogen of the present invention is about 1 18 ° when sodium chloride or ammonium chloride is selected as the first electrolyte salt, and chlorinated lithium or ammonium chloride is selected as the second electrolyte salt.
  • Foods etc. can be kept cold at temperatures below C for a long time.
  • the first electrolyte salt and the second denatured salt are different electrolyte salts.
  • food or the like can be kept at a temperature of about 18 ° C. for a long time.
  • the first electrolyte salt is one selected from the group consisting of magnesium chloride, lucous chloride and sodium nitrate
  • the second electrolyte salt is sodium nitrate and sodium chloride.
  • the first electrolyte salt and the second electrolyte salt are different electrolyte salts.
  • the first electrolyte salt when magnesium chloride is selected as the first electrolyte salt and calcium chloride is selected as the second electrolyte salt, food and the like can be kept at a temperature of about ⁇ 37 ° C. for a long time.
  • sodium nitrate is selected as the first electrolyte salt and ammonium chloride is selected as the second electrolyte salt. If it can be prolonged cold food like in about a 2 9 'D C.
  • the electrolyte salt described above may be used by mixing a plurality of three or more electrolyte salts.
  • the cryogen of the present invention is preferably dissolved so that the total amount of the first electrolyte salt and the second electrolyte salt is 12.5 to 35% by weight with respect to 1 L of water.
  • the total amount of the first electrolyte salt and the second electrolyte salt is less than 12.5% by weight with respect to 1 L of water, the temperature at which the food is kept cold is high, and the food can be kept sufficiently cold. become unable.
  • the concentration of the first electrolyte salt and the second electrolyte salt will increase and the temperature for keeping food etc. will be lower, but it will not be possible to keep the cool temperature for a long time, Foods cannot be kept cool.
  • first electrolyte salt and the second electrolyte salt are dissolved so that the total amount is 12.5 to 35% by weight with respect to 1 L of water, and the second electrolyte salt and the first electrolyte salt
  • the weight ratio is preferably adjusted to be 1: 2 to 5. If the weight ratio of the first electrolyte salt is outside the range of 2 to 5, it will not be possible to maintain the temperature at which the food is kept cold for a long time, and the food will not be sufficiently cooled.
  • the cryogen of the present invention may further contain urea in the first electrolyte salt and the second electrolyte salt.
  • urea By containing urea, foods and the like can be kept cool at about 125 ° C., and a low-temperature state can be maintained for a long time.
  • urea for example, by adding urea to a cryogen composed of sodium chloride and potassium chloride, foods can be kept cool at around _25 ° C for a long time. .
  • urea is added to a cryogen composed of sodium chloride and salt ammonium salt, 2 After 5 ° C, the food salt etc. can be kept cold for a long time.
  • the electrolyte salt of a cryogen containing urea is sodium chloride, magnesium chloride, calcium chloride, sodium nitrate, It is preferred to select from the group consisting of chloride power and ammonium chloride.
  • the first electrolyte salt is selected from the group consisting of sodium chloride, magnesium chloride, calcium chloride, and sodium nitrate
  • the second electrolyte salt is sodium nitrate, sodium chloride. It is preferable to select from the group consisting of U-Vium, Chloride, Magnesium Chloride, Calcium Chloride and Ammonium Chloride as appropriate. Note that the first electrolyte salt and the second electrolyte salt are different electrolyte salts.
  • the cryogen of the present invention has a total weight ratio of 1: 9 2 to 1 L of water with respect to urea and a denatured salt composed of a first electrolyte salt and a second electrolyte.
  • the weight ratio of the electrolyte salt to the urea 1 is less than 9, the temperature for keeping the food, etc., cannot be maintained, and the food, etc. cannot be sufficiently cooled. If the weight ratio exceeds 25, the temperature holding time for keeping food and the like becomes longer, but it takes time to freeze the cryogen because the concentration of the electrolyte salt is high.
  • the first electrolyte salt and the second electrolyte salt so that the total weight of the first electrolyte salt and the second electrolyte salt is 12.525% by weight with respect to 1 L of water. 1 The total amount of denatured salt and second electrolytic salt is 1 L of water.
  • the degree of refrigeration for keeping food, etc. will be high, and if the amount of food, etc. cannot be kept sufficiently, if the amount exceeds 25% by weight, the first electrolyte salt and 2
  • the concentration of electrolyte salt increases and foods are kept cold, but the temperature decreases. It will not be possible to hold the food for a long time and the food will not be sufficiently cooled
  • the cooling agent of the present invention may dissolve magnesium chloride or calcium chloride alone so as to be 12.5 to 25% with respect to 1 L of water.
  • the weight of magnesium chloride or calcium chloride can be kept cold and can maintain a low temperature for a long time is 1 to 2 liters of water.
  • the total amount is 25 5
  • the concentration of magnesium chloride or calcium chloride will increase and the temperature at which food will be kept cooler will become lower, but it will not be possible to maintain that temperature for a long period of time, and it will be possible to keep food sufficiently. I can't make it.
  • cryogen of the present invention is used by filling the laminating film or container with the cryogen.
  • the material for the container filled with the cryogen of the present invention include various known materials composed of polyethylene, polyester, polypropylene, vinyl chloride, and other materials that can withstand low temperatures. Consists of configured containers.
  • FIG. 1 shows a first embodiment of a cooling method using the cooling agent of the present invention. It is a side view of a cold storage with a door on the side.
  • the cold storage 1 includes a cold storage container 2 for storing a cold storage agent, and a cold storage room 3 for storing and storing food or the like that is stored by the cold storage agent.
  • cold air has the property of moving from the upper part to the lower part. Therefore, it is preferable to install the cold insulation storage part 2 in the upper part of the cold storage room 3, so that it is stored and stored in the cold storage room 3. Efficient food can be kept cool.
  • the cryogen storage part 2 may be placed on the lower part of the side surface in the cool box 1 or a plurality of the cryogen storage parts 2 may be installed.
  • the storage unit bottom 4 may be omitted as necessary.
  • the cold insulation storage unit 2 may be installed on the door.
  • the cooling agent so that the amount of the cooling agent stored in the cooling agent storage part 2 (shellfish) is 0.15 or more of the total volume of the cold storage 1. If the body temperature of the refrigerated shell is set to 0 • 15 or more, food stored in the cool room 3 can be kept cold for a long time. It should be noted that the volume of the cooling agent is not less than 0.25 with respect to the entire volume of the cool box 1 when maintaining for a long time in a low temperature state (_ 20 ° C) as an alternative to the door and the fuse. It is preferable to install a cooling agent in
  • the container bottom 4 is not particularly limited in material and shape as long as it can withstand the weight of the cooling agent, but in order to efficiently move the cold air from the cooling agent to the cooling chamber 3, for example, a mesh or the like It is preferable that the shape has a gap.
  • FIG. 2 shows a second embodiment of a cold insulation method using the cold insulation agent of the present invention. It is a side view of a cool box with a door on the top of the cool box (upper method). The cool box 1 is connected to the upper door 5 and the cool box
  • 1 includes a cooling agent storage unit for storing the cooling agent installed at the bottom.
  • the cold storage chamber 2 and the cold storage chamber 3 are partitioned by the storage portion bottom 4.
  • the cold storage agent so that the total volume of the cold storage container 1 is 0 • 15 or more with respect to the total volume of the cold storage chamber 1.
  • the body temperature of the refrigeration shellfish which is preferable to 0.15 or more, food stored in the cold storage chamber 3 can be kept cold for a long time.
  • the volume of the cooling agent should be 0 25 or more with respect to the total volume of the refrigerator 1. It is preferable to install a cooling agent in
  • the container bottom 4 is not particularly limited in material and shape as long as it can withstand the weight of the cooling agent, but in order to efficiently move the cold air from the cooling agent to the cooling chamber 3, for example, a mesh or the like It is preferable that the shape has a gap.
  • the cryogen storage part 2 may be installed on the side surface of the cool box 1.
  • the cryogen storage unit 2 and the cold storage chamber 3 are separated by a storage unit wall 6.
  • the storage unit bottom 4 in FIG. 2 and the storage unit wall 6 in FIG. 3 may be omitted as required.
  • the cryogen is stored in the cryogen storage unit 2,
  • the cryogen of the present invention depends on the first electrolyte salt and the second electrolyte salt to be used. However, in order to keep foods etc. at a temperature of about 115 ° C. or less, the temperature of the cryopreservant is not less than 100 W If you don't cool by putting a cryogen in a quick freezer with a compressor, it will take a long time to freeze the cryogen, and in some cases it won't freeze.
  • the temperature in the quick freezer (internal temperature) to be equal to or lower than the supercooling freezing temperature of the first electrolyte salt and the second electrolyte salt. Since the cold-reserving agent of the present invention keeps food at about 15 ° C. or less, it takes a long time to freeze the cold-reserving agent unless the inside temperature is lower than the supercooling freezing temperature. In some cases, it may not freeze.
  • the supercooling freezing temperature varies depending on the first electrolyte salt and the second electrolyte salt described above, but is around 140 ° C.
  • cryogen it is preferable to install a cryogen so that the cryogen does not adhere to each other when it is placed in the quick freezer.
  • the contact area (surface area) between the cryogen and the air inside the quick freezer is reduced, effectively freezing the cryogen.
  • the method is not particularly limited as long as it can be installed so that the cryogens do not adhere to each other.
  • a partition may be provided between the cryogen and other cryogens.
  • a container having a form that naturally creates a gap when stacked may be filled with a cooling agent and frozen.
  • the frozen cryogen can be provided efficiently by placing the dissolved cryogen in the quick freezer.
  • this cool cycle does not use dry ice, it can be maintained at a low temperature and at a low temperature without causing environmental problems.
  • the present invention has been described in detail above, the present invention is not limited to these.
  • the case where food is kept cold using the cryogen of the present invention has been described.
  • it can also be used for medical devices such as blood that needs to be kept cold.
  • the cold-reserving agent of the present invention was put into the cold-reserving agent storage part 2 as shown in FIG. 1, and the temperature change in the cold-reserving chamber 3 was measured for 12 hours.
  • the cryogenic agent comprising water, magnesium chloride and calcium chloride (hereinafter referred to as Sample 1), the cryogen comprising water, sodium nitrate and ammonium chloride (hereinafter referred to as Sample 2). ), A cryogen composed of water, sodium chloride, potassium chloride and urea (hereinafter referred to as Sample 3), a cryogen composed of water, sodium chloride, ammonium chloride and urea (hereinafter referred to as Sample 3).
  • Sample 4) and a cryogen composed of water, ammonium chloride and potassium chloride (hereinafter referred to as Sample 5) were prepared as follows.
  • Sample 1 was prepared by dissolving 1 88 g of magnesium chloride and 62 g of calcium chloride in 1 L of water and filling a polyethylene container. Thereafter, Sample 1 was frozen in a 100 W rapid refrigerator.
  • Sample 2 was prepared by dissolving 375 g of nitric acid U-vum and 1300 g of ammonium chloride in 1 L of water and filling it into a volume made of 3 ⁇ 4 ⁇ U-ethylene. 2 was frozen in a 1 00 0 0 W fast refrigerator
  • Sample 3 was prepared by dissolving 2 67 7 g of sodium chloride U, 6 6 g of chloride chloride and 35 g of urea in 1 L of water and filling a polyethylene container. Sample 3 was then frozen in a 100 0 W rapid refrigerator.
  • Sample 4 is 1 liter of water with 2 67 7 g of sodium chloride U um and chloride.
  • Sample 5 was prepared by dissolving 2 67 g of ammonium chloride and 6 7 g of potassium chloride in 1 L of water and filling it in a polyethylene container. Sample 5 was then frozen in a 100 W rapid refrigerator.
  • Samples 1 to 5 of the present invention kept the inside of the refrigerator 1 for a long time compared to the commercially available cryogen (comparative sample) even after a lapse of 12 tons. I knew I could do it. Further, from FIG. 4, it was found that Samples 1 to 5 of the present invention can maintain a constant temperature for a long time as compared with the conventional cryogen.
  • Example 2
  • Example 1 Place the sample 1 (550 ml X 16) prepared in Example 1 in the cooler 1 of the upper door type as shown in (1) to (4) below, and measure the holding time. did.
  • the retention time is (1) is 400 minutes, (2) is 500 minutes, (3) is 60 minutes And (4) became 600 minutes.
  • the volume of the cold-reserving agent z The volume of the cold-reservoir 1 was 0.14 D ⁇ ⁇
  • the retention time was 3 5
  • the sample 2 prepared in Example 1 is placed in the lower part of the cold storage box 1 having a volume of 45 L, and the volume of the cooling agent / the volume of the cold storage box 1 is 0.14,.
  • the measurement results were 7 hours for 0.14, 10 hours for 0.18, and 15 hours for 0.25.
  • the temperature was kept below ⁇ 20 ° C for 15 hours. Therefore,
  • the volume of the cryogen / the volume of the cool box 1 should be at least 0.25 (more than 2.5 times the weight of the dry ice).
  • the cold insulation temperature can be adjusted by appropriately changing the electrolyte salt according to the purpose of use, or by further adding urea, so that the cold insulation of the present invention can be adjusted. According to the agent, do not use dry ice 1
  • cryogen of the present invention is an international refrigeration transport standard ⁇ 1
  • cryogen of the present invention it is possible to keep food and the like cold without using dry ice, and it can be used industrially as a substitute for dry ice. It becomes.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)

Abstract

L’invention concerne un matériau de réserve froide pour la congélation de marchandises qui doivent être réfrigérées ou congelées, telles que des marchandises périssables ; et un procédé de réfrigération/congélation d’une marchandise, etc. avec le matériau de réserve froide. Le matériau de réserve froide comprend de l’eau, un premier sel d’électrolyte, et un second sel d’électrolyte, le premier sel d’électrolyte et le second sel d’électrolyte étant dissous de sorte que la quantité totale des sels est comprise entre 12,5 et 35 % en poids par litre d’eau et que le rapport de poids du second sel d’électrolyte sur celui du premier sel d’électrolyte est de 1:2-5.
PCT/JP2005/009005 2005-05-11 2005-05-11 Materiau de reserve froide, procede de reserve froide avec materiau de reserve froide, et cycle de refroidissement utilisant un materiau de reserve froide WO2006120756A1 (fr)

Priority Applications (1)

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PCT/JP2005/009005 WO2006120756A1 (fr) 2005-05-11 2005-05-11 Materiau de reserve froide, procede de reserve froide avec materiau de reserve froide, et cycle de refroidissement utilisant un materiau de reserve froide

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PCT/JP2005/009005 WO2006120756A1 (fr) 2005-05-11 2005-05-11 Materiau de reserve froide, procede de reserve froide avec materiau de reserve froide, et cycle de refroidissement utilisant un materiau de reserve froide

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140037801A1 (en) * 2012-07-31 2014-02-06 Robert P. Cappadora Cooling vessel

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62285978A (ja) * 1986-06-05 1987-12-11 Nippon Light Metal Co Ltd 蓄冷剤組成物
JPH02166191A (ja) * 1988-12-19 1990-06-26 Ikuo Kamata 冷却剤
JPH02269180A (ja) * 1989-04-07 1990-11-02 Takasugi Seiyaku Kk ゲル状瞬間冷却兼低温柔軟蓄冷剤
JPH09272303A (ja) * 1996-02-09 1997-10-21 Daiwa Reiki Kogyo Kk 移動式保冷庫
JP2001201222A (ja) * 2000-01-20 2001-07-27 Masao Umemoto 低温保冷体、および極低温冷凍装置
JP2002068326A (ja) * 2000-09-04 2002-03-08 Yamato Transport Co Ltd 保冷コンテナ
JP2002145342A (ja) * 2000-11-09 2002-05-22 Sanko Co Ltd 保冷容器
JP2002371269A (ja) * 2001-04-10 2002-12-26 Masao Umemoto 混合保冷剤
JP2003041242A (ja) * 2001-04-10 2003-02-13 Masao Umemoto 混合保冷剤
JP2005055158A (ja) * 2003-08-04 2005-03-03 Toshin:Kk 保冷剤供給方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62285978A (ja) * 1986-06-05 1987-12-11 Nippon Light Metal Co Ltd 蓄冷剤組成物
JPH02166191A (ja) * 1988-12-19 1990-06-26 Ikuo Kamata 冷却剤
JPH02269180A (ja) * 1989-04-07 1990-11-02 Takasugi Seiyaku Kk ゲル状瞬間冷却兼低温柔軟蓄冷剤
JPH09272303A (ja) * 1996-02-09 1997-10-21 Daiwa Reiki Kogyo Kk 移動式保冷庫
JP2001201222A (ja) * 2000-01-20 2001-07-27 Masao Umemoto 低温保冷体、および極低温冷凍装置
JP2002068326A (ja) * 2000-09-04 2002-03-08 Yamato Transport Co Ltd 保冷コンテナ
JP2002145342A (ja) * 2000-11-09 2002-05-22 Sanko Co Ltd 保冷容器
JP2002371269A (ja) * 2001-04-10 2002-12-26 Masao Umemoto 混合保冷剤
JP2003041242A (ja) * 2001-04-10 2003-02-13 Masao Umemoto 混合保冷剤
JP2005055158A (ja) * 2003-08-04 2005-03-03 Toshin:Kk 保冷剤供給方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140037801A1 (en) * 2012-07-31 2014-02-06 Robert P. Cappadora Cooling vessel

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