JPH043856A - Jt circuit device for precooling operation with freezer device - Google Patents
Jt circuit device for precooling operation with freezer deviceInfo
- Publication number
- JPH043856A JPH043856A JP10252990A JP10252990A JPH043856A JP H043856 A JPH043856 A JP H043856A JP 10252990 A JP10252990 A JP 10252990A JP 10252990 A JP10252990 A JP 10252990A JP H043856 A JPH043856 A JP H043856A
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- pressure side
- side flow
- heat exchanger
- flow passage
- 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
- 238000005057 refrigeration Methods 0.000 claims description 40
- 230000008878 coupling Effects 0.000 abstract description 25
- 238000010168 coupling process Methods 0.000 abstract description 25
- 238000005859 coupling reaction Methods 0.000 abstract description 25
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000007710 freezing Methods 0.000 abstract 3
- 230000008014 freezing Effects 0.000 abstract 3
- 229910052734 helium Inorganic materials 0.000 abstract 1
- 239000001307 helium Substances 0.000 abstract 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Separation By Low-Temperature Treatments (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は冷凍機に関し、特に冷凍機で予冷を行なうジュ
ールトムソン（ＪＴ）回路装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refrigerator, and more particularly to a Joule-Thomson (JT) circuit device for precooling the refrigerator.
「従来の技術］
極低温冷凍機等においては高圧回路を冷凍機で予冷する
方法かとられている。"Prior Art" In cryogenic refrigerators, etc., a method is used in which a high-pressure circuit is precooled with a refrigerator.
第３図は、従来の技術による極低温冷凍機の例を示す０
本例においては、冷凍負荷３５をジュールトムソン（Ｊ
Ｔ）回ＦＩ？１３０が断熱自由膨張を利用して冷却し、
このＪＴ回路をギフオードマクマホン（ＧＭ）サイクル
を利用したＧＭ冷凍機２０が予冷する。ＪＴ回路３０に
おいては、Ｈｅ圧縮機３１の高圧側出力に接続された高
圧側流路３２は、第１熱交換器３６を出た後、冷凍［２
０の１段冷凍発生部２２に対して、第１の熱的結合２８
を形成し、冷却された後第２熱交換器３７に入る。FIG. 3 shows an example of a cryogenic refrigerator according to the prior art.
In this example, the refrigeration load 35 is set to Joule Thomson (J
T) Time FI? 130 cools using adiabatic free expansion,
A GM refrigerator 20 using the Gifford McMahon (GM) cycle precools this JT circuit. In the JT circuit 30, the high pressure side flow path 32 connected to the high pressure side output of the He compressor 31 passes through the refrigeration [2
The first thermal coupling 28
After being cooled, it enters the second heat exchanger 37.
第２熱交換器３７を出た後、高圧側流路３２はＧＭ冷凍
機２０の２段冷凍発生部２３と第２の熱的結合２９を形
成して冷却され、第３熱交換器３８に入る。After exiting the second heat exchanger 37, the high pressure side flow path 32 forms a second thermal coupling 29 with the two-stage refrigeration generating section 23 of the GM refrigerator 20, is cooled, and is transferred to the third heat exchanger 38. enter.
第３熱交換器３８を出た高圧側流路３２は、ＪＴ弁３４
を介して低圧側流路３３につながる。ＪＴ弁３４以後の
低圧側流路３３は、冷凍負荷３５、第３熱交換器３８、
第２熱交換器３７、第１熱交換器３６を通って、Ｈｅ圧
縮機３１の低圧吸込側に接続される。The high pressure side flow path 32 exiting the third heat exchanger 38 is connected to the JT valve 34
It is connected to the low pressure side flow path 33 via. The low pressure side flow path 33 after the JT valve 34 includes a refrigeration load 35, a third heat exchanger 38,
It passes through the second heat exchanger 37 and the first heat exchanger 36 and is connected to the low pressure suction side of the He compressor 31.
高圧側流１ｉ３２と低圧側流路３３は、第１熱交換器３
６、第２熱交換器３７、第３熱交換器３８において、互
いに熱的に結合し、熱交換を行なう。The high pressure side flow 1i32 and the low pressure side flow path 33 are connected to the first heat exchanger 3
6. The second heat exchanger 37 and the third heat exchanger 38 are thermally coupled to each other and perform heat exchange.
すなわち、低圧１ｌｌＩ流路３３が高圧側流路３２を冷
却し、逆に高圧側流路３２か低圧ｆｌｌｌｌ流路３３を
加熱する。このようにしてＨｅの回路が形成される。That is, the low-pressure 1lll flow path 33 cools the high-pressure side flow path 32, and conversely, the high-pressure side flow path 32 or the low-pressure full flow path 33 is heated. In this way, a He circuit is formed.
０Ｍ冷凍［２０においては、Ｈｅ圧縮ｖ＆２１によって
Ｈｅカスが圧縮される。Ｈｅ圧縮１１ｆｉ２１から出た
圧ｔａＨｅカスは１段冷凍発生部２２において膨張され
て冷却され、さらに２段冷凍発生部２３に供給されて膨
張されることによってさらに冷却される。In 0M refrigeration [20], He dregs are compressed by He compression v&21. The pressure taHe scum produced from the He compression 11fi21 is expanded and cooled in the first-stage refrigeration generating section 22, and is further cooled by being supplied to the second-stage refrigeration generating section 23, where it is expanded and further cooled.
ＪＴ回路３０における冷凍発生の原理は以下の通りであ
る。The principle of refrigeration generation in the JT circuit 30 is as follows.
Ｈｅ圧縮機で高圧に圧縮された高圧Ｈｅは、高圧側流路
３２に供給された後、第１熱交換器３６において低圧側
流路３３内の低圧Ｈｅによって冷却され、第１熱交換器
３６を出た後、ＧＭ冷凍機２０の１段冷凍発生部２２と
第１の熱的結合２８でさらに冷却される。第１の熱的結
合を経た後、第２熱交換器３７に入り、低圧側流路３３
内の低圧Ｈｅと熱交換を行なって冷却される。第２熱交
換器３７を出た後、高圧ＨｅはＧＭ冷凍８！２０の２段
冷凍発生部２３と第２の熱的結合２９でさらに冷却され
、第３熱交換器３８に入る。第３熱交換器３８において
、低圧Ｈｅによってさらに冷却される。このようにして
高圧側流路３２は、ＪＴ弁３４に充分低温に冷却された
高圧Ｈｅガスを供給する。ＪＴ弁３４を通ったＨｅガス
は、断熱自由膨張することによって急激に冷却され、冷
凍負荷３５をたとえば４．２Ｋに冷却する。冷凍負荷３
５を冷却した後のＨｅガスは、低圧側流路３３を通って
第３熱交換器３８に入り高圧Ｈｅを冷却する。低圧Ｈｅ
は、その後第２熱交換器３７、第１熱交換器３６におい
て高圧Ｈｅと熱結合され、高圧Ｈｅを冷却すると共に徐
々に昇温される。昇温されたＨｅガスは、Ｈｅ圧ａ機に
吸入された後、Ｈｅ圧ｔａａ３１によって圧縮され、高
圧側流ＦＩ＠３２に供給される。The high-pressure He compressed to high pressure by the He compressor is supplied to the high-pressure side flow path 32, and then cooled by the low-pressure He in the low-pressure side flow path 33 in the first heat exchanger 36. After leaving the GM refrigerator 20 , it is further cooled by the first-stage refrigeration generator 22 and the first thermal coupling 28 . After passing through the first thermal coupling, it enters the second heat exchanger 37 and enters the low pressure side flow path 33.
It is cooled by heat exchange with the low pressure He inside. After leaving the second heat exchanger 37, the high-pressure He is further cooled by the second thermal coupling 29 with the two-stage refrigeration generator 23 of the GM refrigerator 8!20, and enters the third heat exchanger 38. In the third heat exchanger 38, it is further cooled by low pressure He. In this way, the high pressure side flow path 32 supplies high pressure He gas cooled to a sufficiently low temperature to the JT valve 34. The He gas that has passed through the JT valve 34 undergoes adiabatic free expansion and is rapidly cooled, cooling the refrigeration load 35 to, for example, 4.2K. Refrigeration load 3
After cooling the He gas, the He gas passes through the low pressure side flow path 33 and enters the third heat exchanger 38 to cool the high pressure He. Low pressure He
is then thermally coupled to the high-pressure He in the second heat exchanger 37 and the first heat exchanger 36, cooling the high-pressure He and gradually raising the temperature. The heated He gas is sucked into the He pressure a machine, compressed by the He pressure taa31, and supplied to the high pressure side stream FI@32.
このように、従来の技術による極低温冷凍機においては
、高圧側流路３２は低圧側流路３３と熱交換器を形成し
たり、冷凍機と熱的結合を形成するために、低圧側流路
３３と交互に結合離脱を繰り返している。すなわち、第
３図の構成において、高圧側流路３２は第１熱交換器３
６を出た後、Ｘ点において低圧側流路３３と分離し、Ｇ
Ｍ冷凍機２０の第１冷凍発生部２２と熱的結合を形成し
、その後Ｙ点において、ＪＴ回路３０の低圧側流路３３
と再結合する。また、第２熱交換器３７を出た後、高圧
側流路３２はＸ点で低圧側流路３３と分離し、０Ｍ冷凍
８１２０の第２冷凍発生部２３と第２の熱的結合２９を
形成した後、Ｙ点において低圧側流路３３と再結合を行
なう、これらの分離、再結合の箇所において、配管に加
工を行なうことが必要である。たとえば、第１熱交換器
３６、第２熱交換器３７、第３熱交換器３８においては
、低圧側流路３３と高圧側流路３２とが、二重管式構造
で熱的に結合されている。As described above, in the conventional cryogenic refrigerator, the high-pressure side flow path 32 is connected to the low-pressure side flow path 32 to form a heat exchanger with the low-pressure side flow path 33, or to form a thermal connection with the refrigerator. The connection and separation are repeated alternately with path 33. That is, in the configuration shown in FIG. 3, the high pressure side flow path 32 is connected to the first heat exchanger 3.
6, it separates from the low pressure side flow path 33 at point
A thermal connection is formed with the first refrigeration generation section 22 of the M refrigerator 20, and then at the Y point, the low pressure side flow path 33 of the JT circuit 30 is formed.
Recombine with. Further, after exiting the second heat exchanger 37, the high-pressure side flow path 32 is separated from the low-pressure side flow path 33 at point After forming, it is necessary to process the piping at these separation and recombination points where it is recombined with the low pressure side flow path 33 at point Y. For example, in the first heat exchanger 36, second heat exchanger 37, and third heat exchanger 38, the low pressure side flow path 33 and the high pressure side flow path 32 are thermally coupled with a double pipe structure. ing.
高圧側流路３２をＧＭ冷凍機２０で冷却するために、Ｘ
、Ｙで示す点において、高圧側流路３２は低圧側流路３
３から引き離され、再結合されている。これら配管の分
離再結合は、配管作業上。In order to cool the high pressure side flow path 32 with the GM refrigerator 20,
, at the point indicated by Y, the high pressure side flow path 32 is connected to the low pressure side flow path 3.
It has been separated from 3 and reunited. The separation and reconnection of these piping is necessary for piping work.
面倒なものであり、システムの製造原価を上昇させる。It is cumbersome and increases the cost of manufacturing the system.
［発明が解決しようとする課Ｕ］
以上説明したように、従来の技術による冷凍機で予冷を
行なうＪＴ回路装置においては、配管作業が繁雑なもの
であった。[Problem U to be Solved by the Invention] As explained above, in the conventional JT circuit device in which precooling is performed using a refrigerator, piping work is complicated.
本発明の目的は、配管作業を簡素化し、製造原価を低減
することのできる、冷凍機で予冷を行なうＪＴ回路装置
を提供することである。An object of the present invention is to provide a JT circuit device that performs precooling with a refrigerator, which can simplify piping work and reduce manufacturing costs.
［課題を解決するための手段］
本発明の冷凍機で予冷を行なうＪ、Ｔ回路装置は、冷凍
機の冷凍発生部に対して、ＪＴ回路の高圧流路、低圧流
路が共に熱的に結合され、熱交換を行なう。[Means for Solving the Problems] In the J and T circuit device for precooling a refrigerator of the present invention, both the high-pressure flow path and the low-pressure flow path of the JT circuit are thermally connected to the refrigeration generation part of the refrigerator. are connected to perform heat exchange.
［作用］
冷凍機の冷凍発生部に対して、ＪＴ回路の高圧流路、低
圧流路を共に熱的に結合すると−ＪＴ回路の熱交換器と
、冷凍機の冷凍発生部との間において、ＪＴ回路の高圧
流路、低圧流路を分離する必要がなくなり、一体の配管
を行なうことができる。[Operation] When both the high-pressure flow path and the low-pressure flow path of the JT circuit are thermally coupled to the refrigeration generation section of the refrigerator, - between the heat exchanger of the JT circuit and the refrigeration generation section of the refrigerator, There is no need to separate the high-pressure flow path and low-pressure flow path of the JT circuit, and the piping can be integrated.
［実施例］
第１図は本発明の実施例による、冷凍機で予冷を行なう
ＪＴ回路装置を示す。[Embodiment] FIG. 1 shows a JT circuit device that performs precooling with a refrigerator according to an embodiment of the present invention.
ＪＴ回路１０は、Ｈｅ圧縮ａｉｉｉの低圧側流路１３と
高圧側流路１２を含む、これらの高圧側流路１２と低圧
側流路１３とは共に第１熱交換器１６．０Ｍ冷凍ｆｆ１
２０との第１の熱的結合２５、第２熱交換器１７、ＧＭ
冷凍８ｍ２０との第２の熱的結合２６、第３熱交換器１
８を経由する。その後、高圧側流路１２はＪＴ弁１４を
介して冷凍負荷１５に結合され、出力側が低圧側流路１
３に結合される。The JT circuit 10 includes a low-pressure side flow path 13 and a high-pressure side flow path 12 for He compression aiii, and both the high-pressure side flow path 12 and the low-pressure side flow path 13 are connected to the first heat exchanger 16.0M refrigeration ff1.
first thermal coupling 25 with 20, second heat exchanger 17, GM
Second thermal coupling 26 with refrigeration 8m20, third heat exchanger 1
8. Thereafter, the high pressure side flow path 12 is connected to the refrigeration load 15 via the JT valve 14, and the output side is connected to the low pressure side flow path 1.
Combined with 3.
ＧＭ冷凍機２０は、Ｈｅ圧縮機２１を含み、１段冷凍発
生部２２と２段冷凍発生部２３を有する。The GM refrigerator 20 includes a He compressor 21 and has a first-stage refrigeration generation section 22 and a second-stage refrigeration generation section 23.
１段冷凍発生部２２においては、第１熱的結合２５を介
してＪＴ回路１０の高圧側流路１２および低圧（ｌＩＩ
流路１３に対して、熱的結合を結合し、熱の授受を行な
う、同様に、０Ｍ冷凍１２０の２段冷凍発生部２３は、
ＪＴ回Ｉｉ！８１０の第２の熱的結合２６を介して高圧
側流路１２と低圧側流路１３と熱的結合する。これらの
熱的結合は、たとえば冷凍発生部２２．２３に高圧側流
路１２と低圧側流路１３との二重管を巻回しすることに
よって形成できる。In the first stage refrigeration generation section 22, the high pressure side flow path 12 of the JT circuit 10 and the low pressure (III) are connected via the first thermal coupling 25.
Similarly, the two-stage refrigeration generation unit 23 of the 0M refrigeration unit 120 connects the flow path 13 with thermal coupling and transfers heat.
JT episode II! The high-pressure side flow path 12 and the low-pressure side flow path 13 are thermally coupled via the second thermal connection 26 of 810 . These thermal connections can be formed, for example, by winding a double pipe of the high-pressure side flow path 12 and the low-pressure side flow path 13 around the refrigeration generating section 22,23.
ＪＴ回路１０の高圧ｒｐＪ流路１２と低圧側流路１３は
、第１熱交換器１６、第１の熱的結合２５、第２熱交換
器１７、第２の熱的結合２６、および第３熱交換器１８
の間、同一の結合状態を保持することができる。The high pressure RPJ channel 12 and the low pressure side channel 13 of the JT circuit 10 are connected to a first heat exchanger 16, a first thermal coupling 25, a second heat exchanger 17, a second thermal coupling 26, and a third heat exchanger 18
The same binding state can be maintained during this period.
このため、たとえば二重管構造をとった場合、二重管構
造から高圧ｒＰＪ流路３２を分岐、合流する必要かなく
、常に同等の二重管構造を保持することかできる。ＧＭ
冷凍ａ１２０は、Ｈｅ圧縮機２１を含み、１段冷凍発生
部２２および２段冷凍発生部２３においてＪＴ回路１０
の高圧側流路１２および低圧側流路１３と第１の熱的結
合２５および第２の熱的結合２６を形成する。Therefore, when a double pipe structure is adopted, for example, there is no need to branch or merge the high pressure rPJ flow path 32 from the double pipe structure, and the same double pipe structure can always be maintained. GM
The refrigeration a120 includes a He compressor 21, and the JT circuit 10 in the first-stage refrigeration generating section 22 and the second-stage refrigeration generating section 23.
A first thermal connection 25 and a second thermal connection 26 are formed with the high-pressure side flow path 12 and the low-pressure side flow path 13 of.
以上説明した、冷凍機で予冷を行なうＪＴ回路装置の性
能を以下の様に検討した。The performance of the above-described JT circuit device that performs precooling using a refrigerator was examined as follows.
第２図は第１図に示す本発明の実施例によるＪＴ回路装
置の、第３図に示す従来のＪＴ回路装置との比較検討を
説明するモデルを示す。FIG. 2 shows a model for explaining a comparative study of the JT circuit device according to the embodiment of the present invention shown in FIG. 1 with the conventional JT circuit device shown in FIG. 3.
ＪＴ回ＲＩＯは室温、２０気圧の高圧側流路１２と低温
、１気圧の低圧側流１１８１３とを含む６図においては
、高圧側流路１２とＧＭ冷凍機２０との結合を右側に、
低圧（ＩＩＩ流路１３とＧＭ冷凍機２０との結合を左側
に分けて示す。In Figure 6, which includes the high-pressure side flow path 12 at room temperature and 20 atm and the low-pressure side flow 11813 at low temperature and 1 atm, the JT cycle RIO has the connection between the high-pressure side flow path 12 and the GM refrigerator 20 on the right side.
The connection between the low pressure (III) flow path 13 and the GM refrigerator 20 is shown separated on the left side.
ＪＴ回Ｉｌ＠ １０においては、第１熱交換器１６にお
いて、高圧側流路１２と低圧（ｌＩＩ流路１３とか熱交
換率η１で結合し、第１の熱的結合２５においては、高
圧側流路１２かＧＭ冷凍機２０と効率ηｈ１で結合し、
低圧側流路１３はＧＭ冷凍ｆＲ２０と効率ηＬ１で結合
する。同様に、第２熱交換器１７においては、高圧側流
路１２と低圧側流路１３が効率η２で結合し、第２の熱
的結合２６においては、高圧側流路１２か効率ηｈ２で
、低圧側流路１３か効率ηＬ２で結合し、第３熱交換器
１８においては、効率η３で高圧側流路１２と低圧側流
Ｉｊ＠１３か結合する。なお、ＪＴ回路１０にはＨｅカ
スか流量ＧＪ流れ、冷凍負荷１５において熱量Ｑを奪う
。In JT cycle Il@10, in the first heat exchanger 16, the high pressure side flow path 12 and the low pressure (lII flow path 13) are coupled with a heat exchange coefficient η1, and in the first thermal coupling 25, the high pressure side flow 12 or GM refrigerator 20 with efficiency ηh1,
The low pressure side flow path 13 is coupled to the GM refrigeration fR20 with efficiency ηL1. Similarly, in the second heat exchanger 17, the high pressure side flow path 12 and the low pressure side flow path 13 are coupled with efficiency η2, and in the second thermal coupling 26, the high pressure side flow path 12 is coupled with efficiency ηh2, The low pressure side flow path 13 is coupled with the efficiency ηL2, and in the third heat exchanger 18, the high pressure side flow path 12 and the low pressure side flow Ij@13 are coupled with the efficiency η3. Incidentally, the He sludge flows through the JT circuit 10 at a flow rate GJ, and the refrigeration load 15 takes away the amount of heat Q.
また、第１の熱的結合２５においては、高圧側流路１２
から熱量Ｑｈｔが０Ｍ冷凍８１２０に奪われ、低圧側流
路１３は、ＧＭ冷凍機２０がら熱１ＱＬ１を奪う、同様
に、第２の熱的結合においては高圧側流Ｆ＃１１２から
熱量Ｑｈ２がＧＭ冷凍機２ｏに杼り、ＧＭ冷凍機２０か
ら低圧側流ＩＩ？Ｉ１３に熱量ＱＬ２が移る。また、そ
れぞれの熱的結合２５．２６において、ＧＭ冷凍機２０
は温度ＳＴＩ、ＳＴ２を保持し、ＪＴ回路１０の高圧側
流路１２は、温度ＴＨ２から温度ＴＨ３に変化し、温度
■１１４がらＴＨ５に変化する。また、低圧側流路１３
においては、熱的結合２５において、温度が■［３がら
ＴＬ２に変化し、熱的結合２６においては温度はＴ１５
からＴ１４に変化する。このような、条件の下において
、ガス流量を種々に変化させて冷凍負荷１５における熱
量Ｑ （Ｗ）を計算によって算出した。なお、効率η［
１、ηＬ２は、５０％の場合と９０％の場合の２つの場
合について計算した。比較のため、従来式（ηし１＝η
Ｌ２＝Ｏ）も挙げである。結果を表１として示す、従来
のＪＴ回路と比較して、本発明の実施例によるＪＴ回路
の場合、冷凍負荷における熱量Ｑの大きさは、はとんど
変化していないことかわかる。つまり、高圧側流路と低
圧側流路をともにＧＭ冷凍機と結合させ、熱交換を行な
っているか、目的とする冷凍負荷の冷却能力はほとんど
従来方式と差がない、一方、高圧側流路と低圧側流路を
一体に配管することができるため、ＪＴ回路の設置作業
はきわめて容易となり、製造原価を低減することができ
る４
以上実施例に沿って本発明を説明したが、本発明はこれ
らに制限されるものではない、たとえば、種々の変更、
改良、組み合わせ等が可能なことは当業者に自明であろ
う。In addition, in the first thermal coupling 25, the high pressure side flow path 12
The amount of heat Qht is taken away from the 0M refrigerator 8120, and the low pressure side flow path 13 takes away heat 1QL1 from the GM refrigerator 20. Similarly, in the second thermal coupling, the amount of heat Qh2 is taken away from the high pressure side flow F#112 from the GM refrigerator 8120. Shuttle to refrigerator 2o, low pressure side flow II from GM refrigerator 20? The amount of heat QL2 is transferred to I13. Also, in each thermal coupling 25.26, the GM refrigerator 20
maintains temperatures STI and ST2, and the high pressure side flow path 12 of the JT circuit 10 changes from temperature TH2 to temperature TH3, and from temperature 114 to TH5. In addition, the low pressure side flow path 13
In thermal coupling 25, the temperature changes from ■[3 to TL2, and in thermal coupling 26, the temperature changes to T15.
It changes from T14. Under these conditions, the amount of heat Q (W) in the refrigeration load 15 was calculated by varying the gas flow rate. Note that the efficiency η[
1. ηL2 was calculated for two cases: 50% and 90%. For comparison, the conventional formula (η and 1 = η
L2=O) is also listed. The results are shown in Table 1, and it can be seen that compared to the conventional JT circuit, the amount of heat Q in the refrigeration load hardly changes in the JT circuit according to the embodiment of the present invention. In other words, the high-pressure side flow path and the low-pressure side flow path are both connected to the GM refrigerator to perform heat exchange, or the cooling capacity of the target refrigeration load is almost the same as that of the conventional system. Since the low pressure side flow path and the low pressure side flow path can be piped together, the installation work of the JT circuit is extremely easy and the manufacturing cost can be reduced. For example, without limitation, various changes,
It will be obvious to those skilled in the art that improvements, combinations, etc. are possible.
［発明の効果］
以上説明したように、本発明によれば、ＪＴ回路の高圧
１１１！Ｉ流路、低圧側流路の配管作業かきわめて簡素
化される一方、冷凍能力はほとんど差が生じない。[Effects of the Invention] As explained above, according to the present invention, the high voltage 111! of the JT circuit! Although the piping work for the I flow path and the low pressure side flow path is extremely simplified, there is almost no difference in the refrigerating capacity.
第１図は本発明の実施例を示す冷凍機の冷凍回路を示す
回路図、
第２図は本発明の実施例による冷凍機の性能を検討する
ために行なった解析を説明するための該略図、
第３図は従来の技術による冷凍機の冷凍回路を示す回路
図である。
図において、
１０ ＪＴ回路
１１ Ｈｅ圧縮機
１２ 高圧側流路
１３ 低圧側流路
（表１）
ＪＴ弁
冷凍負荷
第１熱交換器
第２熱交換器
第３熱交換器
ＧＭ冷凍機
Ｈｅ圧縮機
１段冷凍発生部
２段冷凍発生部
第１の熱的結合
第２の熱的結合
第１の熱的結合
第２の熱的結合
ＪＴ回路
Ｈｅ圧縮機
高圧側流路
低圧側流路
ＪＴ弁
冷凍負荷
第１熱交換器
第２熱交換器
第３熱交換器FIG. 1 is a circuit diagram showing a refrigeration circuit of a refrigerator according to an embodiment of the present invention, and FIG. 2 is a schematic diagram illustrating an analysis conducted to examine the performance of a refrigerator according to an embodiment of the present invention. , FIG. 3 is a circuit diagram showing a refrigeration circuit of a refrigerator according to the prior art. In the figure, 10 JT circuit 11 He compressor 12 High pressure side flow path 13 Low pressure side flow path (Table 1) JT valve refrigeration load 1st heat exchanger 2nd heat exchanger 3rd heat exchanger GM refrigerator He compressor 1 Stage refrigeration generation section Two-stage refrigeration generation section First thermal coupling Second thermal coupling First thermal coupling Second thermal coupling JT circuit He compressor High pressure side flow path Low pressure side flow path JT valve Refrigeration load 1st heat exchanger 2nd heat exchanger 3rd heat exchanger
Claims (1)
冷凍機の冷凍発生部に対してＪＴ回路の高圧流路、低圧
流路が共に熱的に結合され、熱交換を行なうことを特徴
とするＪＴ回路装置。(1) A JT circuit device that performs precooling with a refrigerator,
A JT circuit device characterized in that a high-pressure flow path and a low-pressure flow path of a JT circuit are both thermally coupled to a refrigeration generation part of a refrigerator to perform heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10252990A JPH043856A (en) | 1990-04-18 | 1990-04-18 | Jt circuit device for precooling operation with freezer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10252990A JPH043856A (en) | 1990-04-18 | 1990-04-18 | Jt circuit device for precooling operation with freezer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH043856A true JPH043856A (en) | 1992-01-08 |
Family
ID=14329839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10252990A Pending JPH043856A (en) | 1990-04-18 | 1990-04-18 | Jt circuit device for precooling operation with freezer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH043856A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5633737A (en) * | 1993-12-24 | 1997-05-27 | Sharp Kabushiki Kaisha | Projection-type color liquid crystal display having two micro-lens arrays |
| US5801814A (en) * | 1995-03-28 | 1998-09-01 | Fuji Photo Film Co., Ltd. | Split image exposure method |
-
1990
- 1990-04-18 JP JP10252990A patent/JPH043856A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5633737A (en) * | 1993-12-24 | 1997-05-27 | Sharp Kabushiki Kaisha | Projection-type color liquid crystal display having two micro-lens arrays |
| US5801814A (en) * | 1995-03-28 | 1998-09-01 | Fuji Photo Film Co., Ltd. | Split image exposure method |
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