JPS60264A - Low-temperature refrigerator - Google Patents
Low-temperature refrigeratorInfo
- Publication number
- JPS60264A JPS60264A JP10893683A JP10893683A JPS60264A JP S60264 A JPS60264 A JP S60264A JP 10893683 A JP10893683 A JP 10893683A JP 10893683 A JP10893683 A JP 10893683A JP S60264 A JPS60264 A JP S60264A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- refrigerant
- compressor
- refrigeration system
- low
- 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
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、例えば−90°C前後の低温を得るための
、低温冷凍装置の改良に係り、特に起動時の所要動力を
減少させると共にその特性を可変としたものに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a low temperature refrigeration system for obtaining a low temperature of, for example, around -90°C, and in particular to one that reduces the power required at startup and makes its characteristics variable. .
このような冷凍装置としては、多元冷凍サイクルのもの
、特殊な冷媒を使用するもの等が周知である。しかしな
がらこのような低温冷凍装置にあっては、その起動時に
おいては各部分が常温であシ、そのため冷媒の性質上圧
縮機で圧縮した場合の冷媒の圧力上昇がはなはだしく、
伴ない圧縮機の負荷が異状に増大するという欠点が従来
からあった。また従来のものは起動後の対時間温度降下
率については成9行き壕かせの状態であり、これを可変
とする考慮はなされていなかった。As such refrigeration devices, those with a multi-component refrigeration cycle, those using special refrigerants, etc. are well known. However, in such a low-temperature refrigeration system, each part is at room temperature when it is started, so due to the nature of the refrigerant, the pressure of the refrigerant increases significantly when compressed by a compressor.
Conventionally, there has been a drawback that the load on the compressor increases abnormally. In addition, in the conventional system, the rate of temperature drop over time after startup has remained unreliable, and no consideration has been given to making this variable.
そこでこの発明においては、従来の冷凍装置の圧縮機出
口配管に、開閉弁を介して冷媒だめを設けることにより
、前述問題点を解決した冷凍装置を提供することをその
目的とする。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a refrigeration system that solves the above-mentioned problems by providing a refrigerant reservoir in the compressor outlet piping of the conventional refrigeration system via an on-off valve.
以下図面を参照しつつこの発明一実施例を詳述する。An embodiment of this invention will be described in detail below with reference to the drawings.
1は冷媒圧縮機、2は凝縮器、3は減圧器(この実施例
ではキャピラリチューブ)、4は冷却器であり、圧縮機
1の吐出側−凝縮器2−減圧器3−冷却器4−圧縮機1
の吸込側と環状にこれらを配管接続して冷凍装置Rを構
成する。この冷凍装置Rはその冷媒としてR503やR
lBを使用し、冷却器4における温度を約−90°Cと
したものである。1 is a refrigerant compressor, 2 is a condenser, 3 is a pressure reducer (capillary tube in this embodiment), and 4 is a cooler, and the discharge side of the compressor 1 - condenser 2 - pressure reducer 3 - cooler 4 - Compressor 1
A refrigeration system R is constructed by connecting these in an annular manner to the suction side of the refrigeration system R. This refrigeration device R uses R503 or R as its refrigerant.
1B was used, and the temperature in the cooler 4 was set to about -90°C.
5は冷媒だめであり、電磁作動開閉弁6を介して、圧縮
機1吐出側と凝縮器2人口間の配管P】に接続される。A refrigerant reservoir 5 is connected to a pipe P between the discharge side of the compressor 1 and the condenser 2 via an electromagnetic on-off valve 6.
7は冷媒だめ5と、圧縮機1の吸込側と冷却器4出口間
の配管P2との間に介設された電磁作動開閉弁である。Reference numeral 7 denotes an electromagnetically operated on-off valve interposed between the refrigerant reservoir 5 and a pipe P2 between the suction side of the compressor 1 and the outlet of the cooler 4.
8は配管P1の圧力を計測するべくした、公知の圧力計
である。Reference numeral 8 denotes a known pressure gauge intended to measure the pressure in the pipe P1.
9は圧縮機1の動力源としてのモーターである。9 is a motor as a power source for the compressor 1.
10は制御装置であり、弁6.7、およびモーター9の
起動停止を公知の手段で制御する。制御装置10はまた
圧力計8の出力情報を入力する。Reference numeral 10 denotes a control device that controls starting and stopping of the valves 6 and 7 and the motor 9 by known means. The control device 10 also inputs the output information of the pressure gauge 8.
以下前述実施例の作用につき述べる。The operation of the above embodiment will be described below.
この冷凍装置Rは長時間の休止で、全体が常温の状態で
あるとする。It is assumed that this refrigeration apparatus R has been inactive for a long time and the entirety is at room temperature.
オペレータは制御装量10に設けられた図示しないスタ
ートスイッチを操作する。側聞装置10はモーター9を
起動する。それと同時に制御装置10は弁6を開放させ
る。さらに制御装置10は圧力計8からの出力情報が最
高となったことを検知して弁6を閉じる。そのため、冷
媒が常温で通常(弁6を閉じたまiりの場合、圧縮機1
に流れる常温冷媒の密度が犬なる故、圧縮機1を回転す
るに要する軸動力は過大となり、モーター9は過負荷と
なるべきところ、前記したように吐出圧力が最高となる
迄弁6を開放することにより、冷媒の一部は冷媒だめ5
に流入し、冷媒の密度が低下することにより、モーター
9の狗荷は小となる。The operator operates a start switch (not shown) provided on the control unit 10. The side hearing device 10 starts the motor 9. At the same time, the control device 10 opens the valve 6. Further, the control device 10 detects that the output information from the pressure gauge 8 has reached the maximum and closes the valve 6. Therefore, when the refrigerant is at room temperature (when valve 6 is closed), compressor 1
Since the density of the room-temperature refrigerant flowing through the compressor 1 is small, the shaft power required to rotate the compressor 1 becomes excessive, and the motor 9 should be overloaded, but the valve 6 is opened until the discharge pressure reaches its maximum as described above. By doing so, some of the refrigerant is transferred to the refrigerant reservoir 5.
As the density of the refrigerant decreases, the load of the motor 9 becomes smaller.
ある例によれば冷媒をR503とし、冷媒ため5を90
0ccとしたところ、モーター9の起動時の最大負荷は
約2/3となった。According to an example, the refrigerant is R503 and the refrigerant reservoir 5 is 90
When it was set to 0cc, the maximum load at startup of the motor 9 was approximately 2/3.
そして以降通常のかつ周知の冷凍装置の運転となるので
あるが、この運転中にオペレータの制御装置10に対す
るマニュアル操作により、または制御装置10の自動作
動により弁7を開放すれば、ため5内の冷媒は配管P2
の低圧により大部分が配管P2に戻り冷凍装置Rの中を
循環するに至る。Thereafter, the refrigeration system will operate in a normal and well-known manner, and if the valve 7 is opened by the operator's manual operation on the control device 10 or by the automatic operation of the control device 10 during this operation, the contents of the reservoir 5 will be reduced. Refrigerant is pipe P2
Due to the low pressure, most of the water returns to the pipe P2 and circulates through the refrigeration system R.
またこのような冷媒の戻し量を加減することにより、冷
凍装置Rにおける温度降下率を変えることも可能である
。It is also possible to change the rate of temperature drop in the refrigeration system R by adjusting the amount of refrigerant returned.
前述実施例において、弁6を閉じるタイミングを、圧力
計8の出力のピーク時をもってしたが、この池、タイマ
により起動後一定時間において弁6を閉じるようにして
もよい。また弁6を開放し続けてもよい。捷た冷媒を冷
凍装置Rに戻すのに弁7を開放するのでなく弁6を開放
することにより実行してもよい。その他この発明の技術
思想の範囲内における各構成の均等物との置換も、また
この発明の技術的範囲に含まれるものである。In the above-mentioned embodiment, the timing for closing the valve 6 was set at the peak of the output of the pressure gauge 8, but the valve 6 may be closed at a predetermined time after activation using this timer or a timer. Alternatively, the valve 6 may be kept open. The shunted refrigerant may be returned to the refrigeration system R by opening the valve 6 instead of opening the valve 7. Other replacements of each component with equivalents within the scope of the technical idea of this invention are also included within the technical scope of this invention.
この発明は前述したとおり、圧縮機吐出側と凝縮器入口
間の配管に開閉弁を介して冷媒だめを接続したから、こ
の開閉弁を操作することにより低温のための冷媒を封入
した冷凍装置においてその起動時の負荷を減少させうる
のみならず、その作動冷媒の量を加減しうろことにより
、冷凍装置の温度降下特性を変えることもできるなど、
特有かつ顕著な効果を奏しうるものである。As described above, this invention connects a refrigerant reservoir to the piping between the compressor discharge side and the condenser inlet via an on-off valve, so that by operating this on-off valve, a refrigerant filled with low-temperature refrigerant can be used. Not only can the load at startup be reduced, but the temperature drop characteristics of the refrigeration system can also be changed by adjusting the amount of working refrigerant.
It can produce unique and remarkable effects.
図面はこの発明一実施例のブロック図である。
1 圧縮機、2・凝縮器、3 ・減圧器、4・冷却器、
5・・・冷媒だめ、6・・電磁作動開閉弁、Pl・・配
管。
出願人 新明和工業株式会社The drawing is a block diagram of one embodiment of this invention. 1 compressor, 2 condenser, 3 pressure reducer, 4 cooler,
5... Refrigerant reservoir, 6... Solenoid operated on-off valve, Pl... Piping. Applicant ShinMaywa Industries Co., Ltd.
Claims (2)
続してなる低温冷凍装置において、前記圧縮機吐出側と
凝縮器入口間の配管に開閉弁を介して冷媒だめを接続し
たことを特徴とする、前記冷凍装置。(1) In a low-temperature refrigeration system in which a compressor, a condenser, a pressure reducer, and a cooler are connected in a ring, a refrigerant reservoir is connected to the piping between the compressor discharge side and the condenser inlet via an on-off valve. The refrigeration device is characterized by:
請求の範囲第1項記載の冷凍装置。(2) The refrigeration system according to claim 1, wherein the on-off valve is an electromagnetically operated on-off valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10893683A JPS60264A (en) | 1983-06-16 | 1983-06-16 | Low-temperature refrigerator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10893683A JPS60264A (en) | 1983-06-16 | 1983-06-16 | Low-temperature refrigerator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60264A true JPS60264A (en) | 1985-01-05 |
Family
ID=14497401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10893683A Pending JPS60264A (en) | 1983-06-16 | 1983-06-16 | Low-temperature refrigerator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60264A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020174530A1 (en) * | 2019-02-25 | 2020-09-03 | Atsジャパン株式会社 | Refrigerant control system and cooling system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49128344A (en) * | 1973-04-11 | 1974-12-09 |
-
1983
- 1983-06-16 JP JP10893683A patent/JPS60264A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49128344A (en) * | 1973-04-11 | 1974-12-09 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020174530A1 (en) * | 2019-02-25 | 2020-09-03 | Atsジャパン株式会社 | Refrigerant control system and cooling system |
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