JPH02251075A - Cryogenic preservation chamber - Google Patents
Cryogenic preservation chamberInfo
- Publication number
- JPH02251075A JPH02251075A JP7295889A JP7295889A JPH02251075A JP H02251075 A JPH02251075 A JP H02251075A JP 7295889 A JP7295889 A JP 7295889A JP 7295889 A JP7295889 A JP 7295889A JP H02251075 A JPH02251075 A JP H02251075A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- freezing
- cooling pipe
- freezing tank
- preservation
- 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.)
- Pending
Links
- 238000004321 preservation Methods 0.000 title abstract 4
- 238000007710 freezing Methods 0.000 claims abstract description 29
- 230000008014 freezing Effects 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims description 13
- 239000003507 refrigerant Substances 0.000 abstract description 8
- 238000009835 boiling Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/30—Quick freezing
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、圧縮機、凝縮器、気液分離器、減圧装置お
よび冷却器を順次接続した冷凍サイクルによる冷凍装置
を有する超低温保存槽に、小容積の凍結槽を付設した超
低温保存庫に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention provides an ultra-low temperature storage tank having a refrigeration system using a refrigeration cycle in which a compressor, a condenser, a gas-liquid separator, a pressure reduction device, and a cooler are sequentially connected. This relates to an ultra-low temperature storage facility equipped with a small-volume freezing tank.
（従来技術）
従来超低温保存槽の外側に凍結槽を付設し、前ｌに２
記超低温保存槽は冷凍サイクルにより冷却するとともに
、前記凍結槽は前記冷凍サイクルとは別に液体窒素を用
いて冷却するものがある。(Prior art) A freezing tank is attached to the outside of a conventional ultra-low temperature storage tank, and the ultra-low temperature storage tank described in 2 above is cooled by a refrigeration cycle, and the freezing tank is cooled using liquid nitrogen separately from the refrigeration cycle. There is something.
（解決しようとする課題）
液体窒素を用いるには重量物であるボンベを要すること
はもちろん、液体窒素の流量調整を要し、また前記ボン
ベの点検、交換作業等操作上の煩わしさがある。(Problems to be Solved) The use of liquid nitrogen not only requires a heavy cylinder, but also requires adjustment of the flow rate of liquid nitrogen, and involves operational hassles such as inspection and replacement of the cylinder.
（課題を解決するための手段〕
この発明は前記事情に鑑みなされたものであって、凍結
槽用の冷却手段として、超低温保存槽用の冷凍サイクル
を利用し、該冷凍サイクルの減圧装置の吐出口近辺にお
ける冷却管の一部を前記凍結槽の周囲に配設したことを
特徴とするものである。(Means for Solving the Problems) The present invention has been made in view of the above circumstances, and uses a refrigeration cycle for an ultra-low temperature storage tank as a cooling means for a freezing tank, and a discharge of a pressure reducing device of the refrigeration cycle. A part of the cooling pipe near the outlet is disposed around the freezing tank.
（作用）
前記超低温保存槽を冷却する前記冷凍サイクルのうち、
最も低温を得ることのできる前記減圧装置の吐出口近辺
における冷却管により、凍結槽を冷却し、貯蔵物を急速
凍結させる。(Function) Of the refrigeration cycle that cools the ultra-low temperature storage tank,
The freezing tank is cooled by a cooling pipe near the discharge port of the decompression device where the lowest temperature can be obtained, and the stored material is quickly frozen.
高３
（実施例）
１は、外箱１ａ、内箱１ｂおよびその間に充填された断
熱材１Ｇで形成され、上面を開放したケース本体（超低
温保存槽）である。保存槽１の上面には内蓋２が設けら
れ、さらには断熱扉３が開閉自在に設けられる。壕だ、
保存槽１内の内箱１ｂ側壁上部には、上面を開放した凍
結槽４が設置され、凍結＠４の上面には蓋５が設けられ
る。なお凍結槽４の内板はアルミ等の熱伝導の良好な材
料が望ましい。High 3 (Example) 1 is a case body (ultra-low temperature storage tank) formed of an outer box 1a, an inner box 1b, and a heat insulating material 1G filled between them, and has an open upper surface. An inner lid 2 is provided on the upper surface of the storage tank 1, and a heat insulating door 3 is further provided to be openable and closable. It's a trench.
A freezing tank 4 with an open top surface is installed on the upper side wall of the inner box 1b in the storage tank 1, and a lid 5 is provided on the top surface of the freezing tank 4. Note that the inner plate of the freezing tank 4 is preferably made of a material with good heat conduction such as aluminum.
Ｒは冷凍サイクルであり、圧縮機１１、凝縮器１２、第
１気液分離器１３、第１カスケード熱交換器１４、第１
細管１５、第２気液分離器１６、第２カスケード熱交換
器１７、第２細管１８、減圧装置１９、冷却器２０で図
示のように冷媒循環路を構成している。冷凍サイクル凡
内には蒸発温度の異なる複数の冷媒が封入されている。R is a refrigeration cycle, which includes a compressor 11, a condenser 12, a first gas-liquid separator 13, a first cascade heat exchanger 14, a first
The thin tube 15, the second gas-liquid separator 16, the second cascade heat exchanger 17, the second thin tube 18, the pressure reducing device 19, and the cooler 20 constitute a refrigerant circulation path as shown. A plurality of refrigerants having different evaporation temperatures are sealed inside the refrigeration cycle.
また第１、第２カスケード熱交換器１４．１７は、二重
管構造で、内管１４ａ、１７ａと外管１４ｂ、１７ｂ’
＆流れる冷媒の流れ方向が相互に逆向きとなっている。Further, the first and second cascade heat exchangers 14.17 have a double pipe structure, with inner pipes 14a, 17a and outer pipes 14b, 17b'.
&The flow directions of the flowing refrigerants are mutually opposite.
さらには第１、第２細営１５．１８の下流端は、それぞ
れ第１、第２カスケード熱交換器１４．１７の上流側に
おいて、冷却器２０からの冷媒戻り営すなわち内管１４
＋１１７１１に挿入されている。Further, the downstream ends of the first and second sub-tubes 15.18 are located at the upstream sides of the first and second cascade heat exchangers 14.17, respectively.
It is inserted at +11711.
なお冷却器２０のうち減圧装置１９の吐出口近辺におけ
る冷却管の一部２０ａは凍結槽４の周囲に配設され、そ
の冷却管２０１１に連続する下流側の冷却管２０ｂは保
存槽１の周囲に配設されている。In the cooler 20, a part 20a of the cooling pipe near the discharge port of the pressure reducing device 19 is arranged around the freezing tank 4, and a cooling pipe 20b on the downstream side continuous with the cooling pipe 2011 is arranged around the storage tank 1. It is located in
また、凍結槽４の周囲にはヒータ２１が配設されろとと
もに、温度センサ２２も挿入されている。Further, a heater 21 is disposed around the freezing tank 4, and a temperature sensor 22 is also inserted.
ヒータ２１は、凍結槽４の温度を温度センサ２２により
検出しつつ、凍結速度を制御するだめのものである。The heater 21 is used to control the freezing speed while detecting the temperature of the freezing tank 4 using a temperature sensor 22.
そしてこの冷凍サイクル■を作動すれは、前記混合冷媒
は順次分離され、最終的に低沸点冷媒を液成分として取
り出し、これを減圧、冷却器２０で冷却作用させろこと
で超低温を発生させ、保存槽１内の貯蔵物を超低温保存
する。To operate this refrigeration cycle (2), the mixed refrigerant is sequentially separated, and finally the low boiling point refrigerant is taken out as a liquid component, which is depressurized and cooled by the cooler 20 to generate an ultra-low temperature, and then stored in a storage tank. Preserve the stored items in 1 at ultra-low temperature.
魚５
このとき最も低温を得ることのできる減圧装置１９の吐
出口近辺における冷却管の一部２０ａにより、凍結槽４
を冷却し、凍結槽４内の貯蔵物を急速凍結できる。Fish 5 At this time, the freezing tank 4 is
can be cooled and the stored items in the freezing tank 4 can be quickly frozen.
なお貯蔵物によっては時間をかけて凍結させたい場合も
あるが、このときは温度センサ２２により凍結槽４内の
温度を検出しつつ、ヒータ２１の加熱温度を制御し、凍
結速度を制御すればよい。Depending on the stored items, it may be necessary to freeze them over a long period of time, but in this case, the temperature in the freezing tank 4 can be detected by the temperature sensor 22, and the heating temperature of the heater 21 can be controlled to control the freezing speed. good.
前述実施例では凍結槽４を保存槽１内に設けて保存庫全
体のコンパクト化を図ったが、凍結槽４は保存槽１の外
側に付設してもよいなど、この発明をこの実施の形態に
限定するものではない。In the above-mentioned embodiment, the freezing tank 4 was provided inside the storage tank 1 to make the entire storage warehouse compact, but the freezing tank 4 may be attached to the outside of the storage tank 1. It is not limited to.
（発明の効果）
この発明は前述したように、保存槽１を冷却する冷凍サ
イクルＲを利用し、減圧装置１９の吐出口近辺における
冷却管の一部２０ａを凍結槽４の周囲に配設しているの
で、構造が簡単であり、従来のように重量大で操作の煩
わしい液体窒素ボンベを別に設置しな（でも、凍結槽４
内の貯蔵物を急速凍結できろ。(Effects of the Invention) As described above, the present invention utilizes the refrigeration cycle R for cooling the storage tank 1, and arranges a part of the cooling pipe 20a near the discharge port of the pressure reducing device 19 around the freezing tank 4. The structure is simple, and there is no need to install a separate liquid nitrogen cylinder, which is heavy and cumbersome to operate, as in the case of conventional systems.
You can quickly freeze the stored items inside.
扁６flat 6
図はいずれもこの発明の一実施例を示し、第１図は一部
縦断全体説明図、第２図は凍結槽部分の結構、１１・・
・圧縮機、１２・・・凝縮・器、１３・・・第１気液分
離器、１４・・・第１カスケード熱交換器、１５・・・
第１細管、１６ 第２気液分離器、１７・第２カスケー
ド熱交換器、１８・・第２細管、１９減圧装置、２０・
冷却器、２０ａ ２０ｂ 冷却管、２トヒータ、２
２・・温度センサ。
出願人 新明和工業株式会社Each of the figures shows an embodiment of the present invention, with Fig. 1 being a partially longitudinal overall explanatory view, and Fig. 2 showing the structure of the freezing tank section, 11...
- Compressor, 12... Condensing vessel, 13... First gas-liquid separator, 14... First cascade heat exchanger, 15...
1st capillary, 16 2nd gas-liquid separator, 17. 2nd cascade heat exchanger, 18... 2nd capillary, 19 pressure reducing device, 20.
Cooler, 20a 20b Cooling pipe, 2 Heater, 2
2...Temperature sensor. Applicant ShinMaywa Industries Co., Ltd.
Claims (1)
を順次接続した冷凍サイクルによる冷凍装置を有する超
低温保存槽に、小容積の凍結槽を付設した超低温保存庫
において、前記減圧装置の吐出口近辺における冷却管の
一部を前記凍結槽の周囲に配設したことを特徴とする、
前記超低温保存庫。In an ultra-low temperature storage tank having a refrigeration system using a refrigeration cycle in which a compressor, a condenser, a gas-liquid separator, a pressure reduction device, and a cooler are sequentially connected, a small-volume freezing tank is attached. A part of the cooling pipe near the outlet is arranged around the freezing tank,
Said ultra-low temperature storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7295889A JPH02251075A (en) | 1989-03-25 | 1989-03-25 | Cryogenic preservation chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7295889A JPH02251075A (en) | 1989-03-25 | 1989-03-25 | Cryogenic preservation chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02251075A true JPH02251075A (en) | 1990-10-08 |
Family
ID=13504399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7295889A Pending JPH02251075A (en) | 1989-03-25 | 1989-03-25 | Cryogenic preservation chamber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02251075A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5828251B2 (en) * | 1974-10-21 | 1983-06-15 | イハラケミカルコウギヨウ カブシキガイシヤ | Encabenzil no seizouhouhou |
| JPS6355075B2 (en) * | 1981-03-04 | 1988-11-01 | Matsushita Electric Ind Co Ltd |
-
1989
- 1989-03-25 JP JP7295889A patent/JPH02251075A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5828251B2 (en) * | 1974-10-21 | 1983-06-15 | イハラケミカルコウギヨウ カブシキガイシヤ | Encabenzil no seizouhouhou |
| JPS6355075B2 (en) * | 1981-03-04 | 1988-11-01 | Matsushita Electric Ind Co Ltd |
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