JP2003279181A - Two-way refrigerating device - Google Patents
Two-way refrigerating deviceInfo
- Publication number
- JP2003279181A JP2003279181A JP2002083072A JP2002083072A JP2003279181A JP 2003279181 A JP2003279181 A JP 2003279181A JP 2002083072 A JP2002083072 A JP 2002083072A JP 2002083072 A JP2002083072 A JP 2002083072A JP 2003279181 A JP2003279181 A JP 2003279181A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- temperature side
- refrigeration circuit
- high temperature
- side refrigeration
- 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
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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
-
- 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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、２元冷凍装置に関
する。TECHNICAL FIELD The present invention relates to a dual refrigeration system.
【０００２】[0002]
【従来の技術】従来より、-60℃〜−90℃の超低温の生
成には、２元冷凍装置が用いられている。この二元冷凍
装置は、高温側冷凍回路と低温側冷温回路により構成さ
れている。2. Description of the Related Art Conventionally, a binary refrigeration system has been used for producing ultra-low temperature of -60 ° C to -90 ° C. This dual refrigeration system includes a high temperature side refrigeration circuit and a low temperature side refrigeration circuit.
【０００３】高温側冷凍回路は圧縮器、凝縮器、キャピ
ラリー及びカスケードコンデンサにより構成されてお
り、高沸点の冷媒が封入されている。The high temperature side refrigeration circuit is composed of a compressor, a condenser, a capillary and a cascade condenser, and is filled with a high boiling point refrigerant.
【０００４】また低温側冷凍回路は、圧縮器、カスケー
ドコンデンサ、キャピラリ−及び蒸発器により構成され
ており、低沸点の冷媒が封入されている。The low temperature side refrigerating circuit is composed of a compressor, a cascade condenser, a capillary and an evaporator, and a low boiling point refrigerant is enclosed therein.
【０００５】高温側冷凍回路では、冷媒が圧縮器で圧縮
され、凝縮器で冷却されることにより液化され、カスケ
ードコンデンサに供給される。カスケードコンデンサか
ら出た冷媒は再び圧縮器に吸い込まれ高温側冷凍回路を
形成している。In the high temperature side refrigeration circuit, the refrigerant is compressed by the compressor, liquefied by being cooled by the condenser, and supplied to the cascade condenser. The refrigerant discharged from the cascade condenser is sucked into the compressor again to form a high temperature side refrigeration circuit.
【０００６】低温側冷凍回路は、冷媒が圧縮機により圧
縮され、カスケードコンデンサにおいて上述の高温側冷
凍回路から供給される冷媒を用いて冷却され、液化され
る。In the low temperature side refrigeration circuit, the refrigerant is compressed by the compressor, and is cooled and liquefied in the cascade condenser using the refrigerant supplied from the high temperature side refrigeration circuit.
【０００７】その後、冷媒は蒸発器に供給されて低温を
発生する。After that, the refrigerant is supplied to the evaporator to generate a low temperature.
【０００８】蒸発器から出た冷媒は、圧縮機に戻り、低
温側冷凍回路を形成している。The refrigerant discharged from the evaporator returns to the compressor and forms a low temperature side refrigeration circuit.
【０００９】このように、高温側冷凍回路と低温側冷凍
回路とはカスケードコンデンサにより熱的に結合されて
いる。As described above, the high temperature side refrigeration circuit and the low temperature side refrigeration circuit are thermally coupled by the cascade condenser.
【００１０】[0010]
【発明が解決しようとする課題】本発明は、これらの二
元冷凍装置の冷媒として、環境にやさしい冷媒を用いる
ことを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to use an environment-friendly refrigerant as the refrigerant for these dual refrigeration systems.
【００１１】[0011]
【課題を解決するための手段】本発明は、２元冷凍装置
において、二酸化炭素とＨＣ冷媒との混合物を高温側冷
凍回路の冷媒としたことを特徴とする。The present invention is characterized in that, in a binary refrigeration system, a mixture of carbon dioxide and HC refrigerant is used as a refrigerant of a high temperature side refrigeration circuit.
【００１２】また、本発明は、２元冷凍装置において、
亜酸化窒素とＨＣ冷媒との混合物を低温側冷凍回路の冷
媒としたことを特徴とする。Further, according to the present invention, in a dual refrigeration system,
It is characterized in that a mixture of nitrous oxide and HC refrigerant is used as the refrigerant of the low temperature side refrigeration circuit.
【００１３】また、本発明は、２元冷凍装置において、
二酸化炭素とＨＣ冷媒との混合物を高温側冷凍回路の冷
媒とし、亜酸化窒素とＨＣ冷媒との混合物を低温側冷凍
回路の冷媒としたことを特徴とする。The present invention also provides a dual refrigeration system,
It is characterized in that a mixture of carbon dioxide and HC refrigerant is used as a refrigerant for the high temperature side refrigeration circuit, and a mixture of nitrous oxide and HC refrigerant is used as a refrigerant for the low temperature side refrigeration circuit.
【００１４】[0014]
【発明の実施の形態】本発明の第1の実施形態を図１を
参照しつつ説明する。BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described with reference to FIG.
【００１５】図１は、二元冷凍装置を表している。２は
高温側冷凍回路である。３は低温側冷凍回路である。FIG. 1 shows a binary refrigeration system. 2 is a high temperature side refrigeration circuit. Reference numeral 3 is a low temperature side refrigeration circuit.
【００１６】高温側冷凍回路２は、圧縮器４、凝縮器
５、キャピラリー６及びカスケードコンデンサ７により
構成されている。封入される冷媒は、二酸化炭素とＨＣ
冷媒との混合物である。The high temperature side refrigeration circuit 2 comprises a compressor 4, a condenser 5, a capillary 6 and a cascade condenser 7. The enclosed refrigerant is carbon dioxide and HC
It is a mixture with a refrigerant.
【００１７】低温側冷凍回路３は、圧縮器８、カスケー
ドコンデンサ７、キャピラリ−９及び蒸発器１０により
構成されている。封入される冷媒は、亜酸化窒素とＨＣ
冷媒との混合物である。The low temperature side refrigeration circuit 3 comprises a compressor 8, a cascade condenser 7, a capillary 9 and an evaporator 10. The enclosed refrigerant is nitrous oxide and HC
It is a mixture with a refrigerant.
【００１８】第２の実施形態を図２を参照しつつ説明す
る。The second embodiment will be described with reference to FIG.
【００１９】図２は、二元冷凍装置を表している。２２
は高温側冷凍回路である。２３は低温側冷凍回路であ
る。FIG. 2 shows a binary refrigeration system. 22
Is a high temperature side refrigeration circuit. Reference numeral 23 is a low temperature side refrigeration circuit.
【００２０】高温側冷凍回路２２は、圧縮器２４、凝縮
器２５、気液分離器２６、デハイドレータ２７、キャピ
ラリーチュ−ブ２８、熱交換器２９、デハイドレータ３
０、キャピラリーチュ−ブ３１、カスケードコンデンサ
３２、及び膨張タンク３３により構成されている。封入
される冷媒は、二酸化炭素（CO2）とＨＣ冷媒との混合
物である。The high temperature side refrigeration circuit 22 includes a compressor 24, a condenser 25, a gas-liquid separator 26, a dehydrator 27, a capillary tube 28, a heat exchanger 29 and a dehydrator 3.
0, a capillary tube 31, a cascade condenser 32, and an expansion tank 33. The enclosed refrigerant is a mixture of carbon dioxide (CO 2 ) and HC refrigerant.
【００２１】低温側冷凍回路２３は、圧縮器３４、カス
ケードコンデンサ３２、気液分離器３５、デハイドレー
タ３６、キャピラリーチュ−ブ３７、熱交換器３８、デ
ハイドレータ３９、キャピラリーチュ−ブ４０、蒸発器
４１、及び膨張タンク４２により構成されている。封入
される冷媒は、亜酸化窒素（N2O）とＨＣ冷媒との混合
物である。The low temperature side refrigeration circuit 23 includes a compressor 34, a cascade condenser 32, a gas-liquid separator 35, a dehydrator 36, a capillary tube 37, a heat exchanger 38, a dehydrator 39, a capillary tube 40 and an evaporator 41. , And the expansion tank 42. The enclosed refrigerant is a mixture of nitrous oxide (N 2 O) and HC refrigerant.
【００２２】この第2実施形態の高温側冷凍回路２２で
は、気液分離器２６を備えているので、液になりやすい
ＨＣ冷媒は、どちらかというと、デハイドレータ２７、
キャピラリーチュ−ブ２８、熱交換器２９を介して圧縮
機２４に戻り易い。また、二酸化炭素は、この気液分離
器２６、熱交換器２９、デハイドレータ３０、キャピラ
リーチュ−ブ３１、カスケードコンデンサ３２を介して
圧縮機２４に戻り易い。Since the high temperature side refrigeration circuit 22 of the second embodiment is provided with the gas-liquid separator 26, the HC refrigerant that tends to become a liquid is rather a dehydrator 27,
It is easy to return to the compressor 24 via the capillary tube 28 and the heat exchanger 29. Further, carbon dioxide easily returns to the compressor 24 via the gas-liquid separator 26, the heat exchanger 29, the dehydrator 30, the capillary tube 31, and the cascade condenser 32.
【００２３】また、低温側冷凍回路２３でも同様に、気
液分離器２６により、液になりやすい冷媒は、どちらか
というと、デハイドレータ３６、キャピラリーチュ−ブ
３７、熱交換器３８を介して圧縮機３４に戻り易い。Similarly, in the low-temperature side refrigeration circuit 23, the refrigerant that tends to become liquid by the gas-liquid separator 26 is rather compressed via the dehydrator 36, the capillary tube 37, and the heat exchanger 38. It is easy to return to the machine 34.
【００２４】なお、ＨＣ冷媒としては、ｎペンタン、ｎ
ブタン、イソブタン等が考えらられる。また、プロパ
ン、エタン、エチレン等でも良い。As the HC refrigerant, n pentane, n
Butane, isobutane, etc. are considered. Further, propane, ethane, ethylene or the like may be used.
【００２５】[0025]
【発明の効果】以上説明したように、本発明によれば、
培養物の搬送のために、培養物を保持する棚を移動する
ことがないので振動による細胞へのストレスを最小限に
できる。As described above, according to the present invention,
Since the shelf for holding the culture is not moved for transporting the culture, stress on the cells due to vibration can be minimized.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の第１実施形態を説明するための回路図
である。FIG. 1 is a circuit diagram for explaining a first embodiment of the present invention.
【図２】本発明の第２実施形態を説明するための回路図
である。FIG. 2 is a circuit diagram for explaining a second embodiment of the present invention.
２ 高温側冷凍回路、 ３ 低温側冷凍回路、 ２２ 高温側冷凍回路、 ２３ 低温側冷凍回路。 2 High temperature side refrigeration circuit, 3 Low temperature side refrigeration circuit, 22 High temperature side refrigeration circuit, 23 Low temperature side refrigeration circuit.
Claims (3)
Ｃ冷媒との混合物を高温側冷凍回路の冷媒としたことを
特徴とする２元冷凍装置。1. In a two-way refrigeration system, carbon dioxide and H
A binary refrigeration system, wherein a mixture with a C refrigerant is used as a refrigerant of a high temperature side refrigeration circuit.
Ｃ冷媒との混合物を低温側冷凍回路の冷媒としたことを
特徴とする２元冷凍装置。2. A nitrous oxide and H in a binary refrigeration system.
A binary refrigeration system, wherein a mixture with a C refrigerant is used as a refrigerant for the low temperature side refrigeration circuit.
Ｃ冷媒との混合物を高温側冷凍回路の冷媒とし、亜酸化
窒素とＨＣ冷媒との混合物を低温側冷凍回路の冷媒とし
たことを特徴とする２元冷凍装置。3. Carbon dioxide and H in a dual refrigeration system
A dual refrigeration system, wherein a mixture with a C refrigerant is used as a refrigerant in a high temperature side refrigeration circuit, and a mixture with nitrous oxide and an HC refrigerant is used as a refrigerant in a low temperature side refrigeration circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002083072A JP2003279181A (en) | 2002-03-25 | 2002-03-25 | Two-way refrigerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002083072A JP2003279181A (en) | 2002-03-25 | 2002-03-25 | Two-way refrigerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003279181A true JP2003279181A (en) | 2003-10-02 |
Family
ID=29231007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002083072A Pending JP2003279181A (en) | 2002-03-25 | 2002-03-25 | Two-way refrigerating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003279181A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011112351A (en) * | 2009-11-30 | 2011-06-09 | Sanyo Electric Co Ltd | Refrigerating device |
| US20140352336A1 (en) * | 2012-01-26 | 2014-12-04 | Arkema France | Cascade refrigeration system |
-
2002
- 2002-03-25 JP JP2002083072A patent/JP2003279181A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011112351A (en) * | 2009-11-30 | 2011-06-09 | Sanyo Electric Co Ltd | Refrigerating device |
| US20140352336A1 (en) * | 2012-01-26 | 2014-12-04 | Arkema France | Cascade refrigeration system |
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