JPWO2022044168A5 - - Google Patents
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- Publication number
- JPWO2022044168A5 JPWO2022044168A5 JP2022544971A JP2022544971A JPWO2022044168A5 JP WO2022044168 A5 JPWO2022044168 A5 JP WO2022044168A5 JP 2022544971 A JP2022544971 A JP 2022544971A JP 2022544971 A JP2022544971 A JP 2022544971A JP WO2022044168 A5 JPWO2022044168 A5 JP WO2022044168A5
- Authority
- JP
- Japan
- Prior art keywords
- temperature side
- side refrigerant
- heat exchanger
- low temperature
- refrigerant
- 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.)
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Links
- 239000003507 refrigerant Substances 0.000 claims 30
- 238000005057 refrigeration Methods 0.000 claims 10
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Claims (4)
低温側冷媒が循環する低温側冷凍サイクル回路と、
前記高温側冷媒と前記低温側冷媒との間で熱交換が行われる複数のカスケード熱交換器と
を有し、
前記高温側冷凍サイクル回路は、
前記高温側冷媒として高温側第１冷媒が循環する高温側第１冷凍サイクルユニットと、
前記高温側冷媒として高温側第２冷媒が循環する高温側第２冷凍サイクルユニットと
を備え、
複数の前記カスケード熱交換器は、
前記低温側冷媒と前記高温側第１冷媒との間で熱交換が行われる第１カスケード熱交換器と、
前記低温側冷媒と前記高温側第２冷媒との間で熱交換が行われる第２カスケード熱交換器と
を備え、
前記第１カスケード熱交換器と前記第２カスケード熱交換器とは、前記第１カスケード熱交換器を流れる前記低温側冷媒と、前記第２カスケード熱交換器を流れる前記低温側冷媒とが直列に流れる態様で、互いに隣接するように配置され、
前記第１カスケード熱交換器には、前記低温側冷媒が流出入する第１低温側冷媒流出入口が配置され、
前記第２カスケード熱交換器には、前記低温側冷媒が流出入する第２低温側冷媒流出入口が配置され、
一方向に沿って前記第１カスケード熱交換器と前記第２カスケード熱交換器とを配置した状態で、前記第１低温側冷媒流出入口と前記第２低温側冷媒流出入口とは、互いに向かい合う位置に配置された、冷凍装置。 a high temperature side refrigeration cycle circuit in which the high temperature side refrigerant circulates;
a low temperature side refrigeration cycle circuit in which the low temperature side refrigerant circulates;
a plurality of cascade heat exchangers in which heat is exchanged between the high-temperature side refrigerant and the low-temperature side refrigerant;
The high temperature side refrigeration cycle circuit is
a high temperature side first refrigeration cycle unit in which the high temperature side first refrigerant circulates as the high temperature side refrigerant;
a high-temperature side second refrigeration cycle unit in which a high-temperature side second refrigerant circulates as the high-temperature side refrigerant,
the plurality of cascade heat exchangers,
a first cascade heat exchanger in which heat is exchanged between the low temperature side refrigerant and the high temperature side first refrigerant;
a second cascade heat exchanger in which heat is exchanged between the low temperature side refrigerant and the high temperature side second refrigerant;
In the first cascade heat exchanger and the second cascade heat exchanger, the low-temperature side refrigerant flowing through the first cascade heat exchanger and the low-temperature side refrigerant flowing through the second cascade heat exchanger are connected in series. arranged adjacent to each other in a flowing manner ;
The first cascade heat exchanger is provided with a first low temperature side refrigerant inlet/outlet through which the low temperature side refrigerant flows,
The second cascade heat exchanger is provided with a second low temperature side refrigerant inlet/outlet through which the low temperature side refrigerant flows,
With the first cascade heat exchanger and the second cascade heat exchanger arranged along one direction, the first low temperature side refrigerant inlet/outlet and the second low temperature side refrigerant inlet/outlet face each other. Refrigeration equipment placed in
前記低温側圧縮機から送り出される前記低温側冷媒の流れに対して、
前記第１カスケード熱交換器は、前記低温側冷媒の流れの上流側に位置し、
前記第２カスケード熱交換器は、前記低温側冷媒の流れの下流側に位置し、
前記第１カスケード熱交換器は、前記低温側冷媒と前記高温側第１冷媒との間で行われる熱交換に寄与する第１熱交換面積を有し、
前記第２カスケード熱交換器は、前記低温側冷媒と前記高温側第２冷媒との間で行われる熱交換に寄与する第２熱交換面積を有し、
前記第２熱交換面積は前記第１熱交換面積よりも大きい、請求項１記載の冷凍装置。 The low temperature side refrigeration cycle circuit includes a low temperature side compressor that compresses the low temperature side refrigerant,
With respect to the flow of the low temperature side refrigerant sent out from the low temperature side compressor,
The first cascade heat exchanger is located upstream of the flow of the low temperature side refrigerant,
The second cascade heat exchanger is located downstream of the flow of the low temperature side refrigerant,
The first cascade heat exchanger has a first heat exchange area that contributes to heat exchange between the low temperature side refrigerant and the high temperature side first refrigerant,
The second cascade heat exchanger has a second heat exchange area that contributes to heat exchange between the low temperature side refrigerant and the high temperature side second refrigerant,
2. The refrigeration system of claim 1, wherein said second heat exchange area is greater than said first heat exchange area.
前記高温側冷媒は、Ｒ１２３４ｙｆおよびＲ２９０のいずれかである、請求項１または２に記載の冷凍装置。 The low-temperature side refrigerant is CO2 ,
3. The refrigeration system according to claim 1, wherein said high temperature side refrigerant is either R1234yf or R290.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2020/032196 WO2022044168A1 (en) | 2020-08-26 | 2020-08-26 | Refrigeration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2022044168A1 JPWO2022044168A1 (en) | 2022-03-03 |
| JPWO2022044168A5 true JPWO2022044168A5 (en) | 2023-02-15 |
Family
ID=80352839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022544971A Pending JPWO2022044168A1 (en) | 2020-08-26 | 2020-08-26 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPWO2022044168A1 (en) |
| WO (1) | WO2022044168A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024023986A1 (en) * | 2022-07-27 | 2024-02-01 | 三菱電機株式会社 | Two-stage refrigeration device |
| JP7299395B1 (en) | 2022-09-09 | 2023-06-27 | コベルコ・コンプレッサ株式会社 | refrigeration equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0621728B2 (en) * | 1984-09-27 | 1994-03-23 | 株式会社東芝 | Air conditioner |
| US9599395B2 (en) * | 2010-11-15 | 2017-03-21 | Mitsubishi Electric Corporation | Refrigerating apparatus |
| WO2015132966A1 (en) * | 2014-03-07 | 2015-09-11 | 三菱電機株式会社 | Refrigeration cycle device |
| DE102014018524A1 (en) * | 2014-12-12 | 2015-12-03 | Audi Ag | Air conditioning for vehicles |
| JP6296203B2 (en) * | 2015-03-19 | 2018-03-20 | 三菱電機株式会社 | Heat pump system |
| JP2018194183A (en) * | 2017-05-12 | 2018-12-06 | 株式会社ニシヤマ | Cooling device |
-
2020
- 2020-08-26 JP JP2022544971A patent/JPWO2022044168A1/ja active Pending
- 2020-08-26 WO PCT/JP2020/032196 patent/WO2022044168A1/en active Application Filing
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