JPH11351711A - Freezer with refrigerant recovery device - Google Patents
Freezer with refrigerant recovery deviceInfo
- Publication number
- JPH11351711A JPH11351711A JP10163795A JP16379598A JPH11351711A JP H11351711 A JPH11351711 A JP H11351711A JP 10163795 A JP10163795 A JP 10163795A JP 16379598 A JP16379598 A JP 16379598A JP H11351711 A JPH11351711 A JP H11351711A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- refrigeration
- recovery device
- refrigeration circuit
- circuit
- 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
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷媒回収装置を備
えた冷凍装置に関するものであり、さらに詳しくは冷凍
回路中の冷媒が漏洩した場合はそれを検知して冷媒を冷
媒回収装置に回収するようにした安全性の高い冷凍装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration system provided with a refrigerant recovery device, and more particularly, when a refrigerant in a refrigeration circuit leaks, it is detected and the refrigerant is recovered in the refrigerant recovery device. And a safer refrigeration system.
【０００２】[0002]
【従来の技術】従来、冷凍機などの冷凍装置の冷媒とし
て用いられているものとして、オゾン層を破壊する危険
性のあるジクロロジフルオロメタン（Ｒ−１２）や共沸
混合冷媒のＲ−１２と１，１−ジフルオロエタン（Ｒ−
１５２ａ）とからなるＲ−５００や、オゾン層を破壊す
る危険性が少ないが地球温暖化効果が高い塩素基の含有
量を減少させた代替冷媒として、例えば、クロロジフル
オロメタン（ＨＣＦＣ−２２）、塩素基を含まない冷
媒、例えば、ジフルオロメタン（ＨＦＣ−３２、Ｒ−３
２）、トリフルオロメタン（ＨＦＣ−２３、Ｒ−２
３）、ペンタフルオロエタン（ＨＦＣ−１２５、Ｒ−１
２５）、１，１，１，２−テトラフルオロエタン（ＨＦ
Ｃ−１３４ａ、Ｒ−１３４ａ）、１，１，１−トリフル
オロエタン（ＨＦＣ−１４３ａ、Ｒ−１４３ａ）、塩素
基と水素を含まないフルオロカーボン系冷媒（ＦＣ系冷
媒）、あるいはこれらの混合物や、プロパン、ブタン、
ペンタンなどの可燃性のある炭化水素類や、ヘリウムな
どや、アンモニアなど、空気などがある。2. Description of the Related Art Conventionally, dichlorodifluoromethane (R-12) or an azeotropic mixed refrigerant R-12, which has a risk of destroying the ozone layer, has been used as a refrigerant in a refrigerating apparatus such as a refrigerator. 1,1-difluoroethane (R-
152a), and as an alternative refrigerant having a reduced danger of destroying the ozone layer but having a low chlorine group content that has a high global warming effect, for example, chlorodifluoromethane (HCFC-22), A refrigerant containing no chlorine group, for example, difluoromethane (HFC-32, R-3
2), trifluoromethane (HFC-23, R-2
3), pentafluoroethane (HFC-125, R-1
25), 1,1,1,2-tetrafluoroethane (HF
C-134a, R-134a), 1,1,1-trifluoroethane (HFC-143a, R-143a), a fluorocarbon-based refrigerant containing no chlorine group and hydrogen (FC-based refrigerant), or a mixture thereof, Propane, butane,
There are combustible hydrocarbons such as pentane, air such as helium, and ammonia.
【０００３】これらの冷媒を用いた家庭用冷蔵庫、エア
コンデイショナーや産業用冷凍機器などの冷凍装置の冷
凍回路から冷媒が漏洩すると、オゾン層破壊、地球温暖
化、冷凍能力の低下など以外に、冷媒がプロパン、ブタ
ン、ペンタンなどの可燃性のある炭化水素類やアンモニ
アなどの自然冷媒の場合は、悪臭、爆発、火災、人体へ
の悪影響などの原因となる。[0003] Leakage of refrigerant from a refrigeration circuit of a refrigeration system such as a home refrigerator, an air conditioner, or an industrial refrigeration equipment using these refrigerants causes ozone depletion, global warming, a decrease in refrigeration capacity, and the like. When the refrigerant is a flammable hydrocarbon such as propane, butane, or pentane, or a natural refrigerant such as ammonia, it causes odor, explosion, fire, and adverse effects on human bodies.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記の問題を
解決するものであり、本発明の目的は、冷凍装置の冷凍
回路から冷媒が漏洩して上記のような悪影響がでる危険
が発生した場合は、特に冷媒がプロパン、ブタン、ペン
タンなどの可燃性炭化水素類やアンモニアなどの自然冷
媒の場合は、直ちに、冷凍装置の冷凍回路中の冷媒を冷
媒回収装置に回収して、危険を未然に防止できるように
した冷凍装置を提供することである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to cause a danger that the refrigerant leaks from a refrigeration circuit of a refrigeration apparatus and causes the above-mentioned adverse effects. In particular, if the refrigerant is a natural refrigerant such as flammable hydrocarbons such as propane, butane, and pentane, or ammonia, the refrigerant in the refrigeration circuit of the refrigeration system is immediately collected by the refrigerant recovery system, and the danger is premature. It is an object of the present invention to provide a refrigeration apparatus which can prevent the refrigeration.
【０００５】[0005]
【課題を解決するための手段】すなわち、上記課題を解
決するため請求項１の発明は、冷凍回路に接続した管路
と、この管路に設けた開閉弁と、前記管路に接続される
とともに冷凍回路中の冷媒を選択的に吸着できる固体吸
着剤を収容した冷媒回収本体とを備えた冷媒回収装置を
備えた冷凍装置であって、前記冷凍装置内および／また
は前記冷凍装置が設置されている室内などの空間に設け
た少なくとも１つのセンサが冷凍回路から漏洩した冷媒
を検知した場合は、前記センサからの信号に基づいて前
記開閉弁を開けて冷凍回路と前記冷媒回収装置を連通さ
せ、冷凍回路中の冷媒を前記固体吸着剤に吸着すること
を特徴とする冷媒回収装置を備えた冷凍装置である。In order to solve the above-mentioned problems, a first aspect of the present invention is directed to a pipeline connected to a refrigeration circuit, an on-off valve provided in the pipeline, and connected to the pipeline. And a refrigerant recovery device including a refrigerant recovery main body containing a solid adsorbent capable of selectively adsorbing the refrigerant in the refrigeration circuit, wherein the refrigeration device is installed in and / or in the refrigeration device. When at least one sensor provided in a space such as a room that has detected refrigerant leaked from the refrigeration circuit, the on-off valve is opened based on a signal from the sensor to communicate the refrigeration circuit with the refrigerant recovery device. A refrigeration system provided with a refrigerant recovery device, wherein a refrigerant in a refrigeration circuit is adsorbed by the solid adsorbent.
【０００６】本発明の請求項２の発明は、請求項１記載
の冷凍装置において、冷媒が、アンモニア、プロパン、
ブタンなどの炭化水素類などの自然冷媒であることを特
徴とする。According to a second aspect of the present invention, in the refrigeration apparatus according to the first aspect, the refrigerant is ammonia, propane,
It is a natural refrigerant such as hydrocarbons such as butane.
【０００７】本発明の請求項３の発明は、請求項２記載
の冷凍装置において、冷媒が、指標物質を含むことを特
徴とする。According to a third aspect of the present invention, in the refrigeration apparatus according to the second aspect, the refrigerant contains an indicator substance.
【０００８】本発明の請求項４の発明は、請求項１から
請求項３のいずれかに記載の冷凍装置において、警報ラ
ンプおよび／または警報ブザーを備え、前記センサが冷
凍回路から漏洩した冷媒を検知した場合は、前記センサ
からの信号に基づいて前記警報ランプおよび／警報ブザ
ーを作動させることを特徴とする。According to a fourth aspect of the present invention, in the refrigeration apparatus according to any one of the first to third aspects, an alarm lamp and / or an alarm buzzer is provided, and the sensor detects the refrigerant leaking from the refrigeration circuit. When detecting, the alarm lamp and / or the alarm buzzer are activated based on a signal from the sensor.
【０００９】[0009]
【発明の実施の形態】以下、図面を用いて本発明の実施
の形態を説明する。図１は、冷媒回収装置を備えた本発
明の冷凍装置の１実施の形態を示す説明図である。図２
は、図１に示した冷凍装置の冷媒回路に冷媒回収装置を
連結した状態を示す説明図である。図１および図２にお
いて、１は圧縮機２を搭載した冷蔵庫である。圧縮機２
には凝縮器３、キャピラリチューブ４及び蒸発器５が順
次接続され、冷凍回路を構成している。この冷蔵庫１の
圧縮機２へ冷媒を封入するための封入パイプ１１の先に
冷媒回収装置６の管路７の一端が連結されている。１２
は圧力計、１３は警告ランプである。冷媒回収装置６
は、冷凍回路に一端が接続された管路７と、この管路７
に設けた電磁弁８と、冷凍回路中の冷媒を選択的に吸着
できる固体吸着剤９を収容した冷媒回収本体１０などか
ら構成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing one embodiment of a refrigeration apparatus of the present invention provided with a refrigerant recovery device. FIG.
FIG. 2 is an explanatory diagram showing a state in which a refrigerant recovery device is connected to a refrigerant circuit of the refrigeration device shown in FIG. 1. 1 and 2, reference numeral 1 denotes a refrigerator on which a compressor 2 is mounted. Compressor 2
, A condenser 3, a capillary tube 4 and an evaporator 5 are sequentially connected to form a refrigeration circuit. One end of a pipe 7 of the refrigerant recovery device 6 is connected to the end of a sealing pipe 11 for sealing the refrigerant into the compressor 2 of the refrigerator 1. 12
Is a pressure gauge, and 13 is a warning lamp. Refrigerant recovery device 6
Is a pipe 7 having one end connected to the refrigeration circuit,
And a refrigerant recovery main body 10 containing a solid adsorbent 9 capable of selectively adsorbing the refrigerant in the refrigeration circuit.
【００１０】以上の構成において、冷蔵庫１の庫内およ
び／または冷蔵庫１が設置されている図示しない室内な
どの空間に設けた図示しない少なくとも１つのセンサが
冷凍回路からの冷媒の漏洩を検知し、このセンサから図
示しない制御装置へ信号を送り、検知した漏洩量、漏洩
持続時間、漏洩パターンなどが予め決められた基準値な
どを超えた場合は、前記制御装置から信号を電磁弁８へ
送り、電磁弁８を開けるとともに警告ランプ１３を点灯
し、図示しない警報ブザーを作動する。電磁弁８が開け
られると冷蔵庫１の冷凍回路中の冷媒（前記フロン系冷
媒、炭化水素類や、ヘリウムなどや、アンモニアなど、
空気など）は吸引用ポンプなどを使用することなく、直
ちに図２の矢印で示した方向に流れて、冷凍回路中の実
質的に全ての冷媒が固体吸着剤９に吸着されて、冷媒回
収本体１０内に回収される。固体吸着剤９に吸着された
冷媒は不可逆的に吸着されており、自然に脱着すること
がないので漏洩による前記の各種の危険を未然に防止で
きる。以上の構成においては少なくとも１つのセンサが
冷凍回路からの冷媒の漏洩を検知した場合、電磁弁８が
自動的に開けられる例を示したが、警告ランプ１３が点
灯した時、あるいは図示しない警報ブザーがなった時、
手動で電磁弁８を開けるようにしてもよい。In the above configuration, at least one sensor (not shown) provided in the refrigerator 1 and / or in a space (not shown) where the refrigerator 1 is installed detects leakage of the refrigerant from the refrigeration circuit, A signal is sent from the sensor to a control device (not shown), and when the detected leak amount, the leak duration time, the leak pattern, etc. exceed a predetermined reference value or the like, a signal is sent from the control device to the solenoid valve 8, When the solenoid valve 8 is opened, the warning lamp 13 is turned on, and an alarm buzzer (not shown) is activated. When the solenoid valve 8 is opened, the refrigerant in the refrigeration circuit of the refrigerator 1 (the CFC-based refrigerant, hydrocarbons, helium, ammonia, etc.
2) immediately flows in the direction indicated by the arrow in FIG. 2 without using a suction pump or the like, and substantially all of the refrigerant in the refrigeration circuit is adsorbed by the solid adsorbent 9 and the refrigerant recovery main body. Collected in 10. Since the refrigerant adsorbed by the solid adsorbent 9 is irreversibly adsorbed and does not desorb spontaneously, the various dangers described above due to leakage can be prevented. In the above configuration, the example in which the solenoid valve 8 is automatically opened when at least one sensor detects the leakage of the refrigerant from the refrigeration circuit has been described. When
The solenoid valve 8 may be opened manually.
【００１１】冷蔵庫１の冷凍回路中の冷媒に、着色物
質、マーキング物質、臭い物質など指標となる物質を含
有させておくと、漏洩した冷媒が冷蔵庫１に起因するも
のであるか、あるいは他に起因するものかを区別してセ
ンサにより検知することができる。If the refrigerant in the refrigeration circuit of the refrigerator 1 contains a substance such as a coloring substance, a marking substance, or an odorous substance which serves as an indicator, the leaked refrigerant may be caused by the refrigerator 1, It can be detected by the sensor while distinguishing whether it is caused or not.
【００１２】本発明においては、固体吸着剤９は冷凍回
路中に存在する冷媒に応じてその冷媒を選択的に吸着で
きる固体吸着剤を使用する必要がある。具体的には、冷
凍回路中に存在する冷媒がフロン系冷媒であれば、この
フロン系冷媒を選択的に吸着できるような吸着性能を有
する固体吸着剤を用い、冷凍回路中に存在する冷媒が炭
化水素類や、ヘリウムなどや、アンモニアなど、空気な
どであれば、それぞれの冷媒を選択的に吸着できるよう
な吸着性能を有する固体吸着剤を用いる必要がある。In the present invention, it is necessary to use a solid adsorbent which can selectively adsorb the refrigerant according to the refrigerant present in the refrigeration circuit. Specifically, if the refrigerant present in the refrigeration circuit is a chlorofluorocarbon-based refrigerant, a solid adsorbent having an adsorption performance capable of selectively adsorbing the chlorofluorocarbon-based refrigerant is used. In the case of air such as hydrocarbons, helium, and ammonia, it is necessary to use a solid adsorbent having an adsorption performance capable of selectively adsorbing each refrigerant.
【００１３】冷媒を選択的に吸着できる固体吸着剤は、
固体吸着剤の種類、小孔の大きさ、極性などを考慮し
て、例えば、粉末状、粒状、繊維状、あるいは成型した
形状の活性炭、ガス吸着樹脂、粘土、活性アルミナ、モ
レキュラーシーブ、ボーンチャー、白土、シリカゲルお
よびこれらの２つ以上の混合物などから選択される。A solid adsorbent capable of selectively adsorbing a refrigerant is
Considering the type of solid adsorbent, pore size, polarity, etc., for example, activated carbon, gas-adsorbent resin, clay, activated alumina, molecular sieve, bone char in powdered, granular, fibrous, or molded form , Clay, silica gel and a mixture of two or more thereof.
【００１４】フロン系冷媒であっても例えば、Ｒ２３は
分子量７０、沸点−８２℃であり、Ｒ１１６は分子量１
３８、沸点−７８℃と物性が異なるので、例えば、固体
吸着剤として活性炭を使用する場合、Ｒ２３冷媒を選択
的に吸着できる活性炭の小孔の径は小さいものを選択
し、Ｒ１１６冷媒を選択的に吸着できる活性炭の小孔の
径は大きいものを選択する。For example, R23 has a molecular weight of 70 and a boiling point of -82 ° C., and R116 has a molecular weight of 1
For example, when using activated carbon as a solid adsorbent, the activated carbon capable of selectively adsorbing the R23 refrigerant should have a small pore diameter, and the R116 refrigerant should be selectively used. Activated carbon that can be adsorbed on a large pore is selected.
【００１５】また、Ｒ２３を６１％、Ｒ１１６を３９％
含有する混合冷媒Ｒ−５０８を吸着・回収する場合は、
Ｒ−５０８を選択的に吸着できる活性炭として前記小孔
の径が小さい活性炭と前記小孔の径が大きい活性炭との
所定比率の混合物を冷媒回収本体１０内に収容して使用
することができる。Further, R23 is 61% and R116 is 39%.
When adsorbing and recovering the contained mixed refrigerant R-508,
As the activated carbon capable of selectively adsorbing R-508, a mixture of activated carbon having a small diameter of the small holes and activated carbon having a large diameter of the small holes can be contained in the refrigerant recovery main body 10 and used.
【００１６】また、前記混合冷媒Ｒ−５０８を吸着・回
収する場合、Ｒ−５０８を選択的に吸着できる前記小孔
の径が小さい活性炭を冷媒回収本体１０内に収容して使
用し、前記小孔の径が大きい活性炭を他の冷媒回収本体
１０内に収容して使用し、この２つの冷媒回収装置１０
を直列に連結して使用することもできる。When the mixed refrigerant R-508 is adsorbed / recovered, activated carbon having a small diameter of the small hole capable of selectively adsorbing R-508 is accommodated in the refrigerant recovery main body 10 and used. Activated carbon having a large hole diameter is accommodated in another refrigerant recovery main body 10 for use.
Can be used in series.
【００１７】図３は活性炭の冷媒吸着性能を試験するた
めの実験装置の断面説明図である。この実験装置１４
は、圧力計１５、冷媒や活性炭の出し入れ口１６を備え
た内容積を約１００ｍｌ〜１０００ｍｌまで変えること
ができる密閉容器１７などから構成されている。常温に
おいて出し入れ口１６から冷媒と活性炭を所定重量比率
（活性炭／冷媒＝０．７５、１、２および３）で密閉容
器１７内に入れ、活性炭の冷媒吸着性能を試験した。冷
媒はＲ１３４ａを使用した。FIG. 3 is an explanatory sectional view of an experimental apparatus for testing the refrigerant adsorption performance of activated carbon. This experimental device 14
Is composed of a pressure gauge 15, a closed container 17 provided with an inlet / outlet 16 for a refrigerant or activated carbon and capable of changing the internal volume from about 100 ml to 1000 ml. At normal temperature, the refrigerant and the activated carbon were put into the closed vessel 17 at a predetermined weight ratio (activated carbon / refrigerant = 0.75, 1, 2, and 3) from the inlet / outlet 16, and the refrigerant adsorption performance of the activated carbon was tested. The refrigerant used was R134a.
【００１８】図４は、密閉容器１７の内容積を約１００
ｍｌ〜１０００ｍｌまで変え（横軸）、（活性炭／冷
媒）重量比率を０．７５、１、２および３と変えた時
の、密閉容器１７内の気相部の圧力（バール）を縦軸に
示したグラフである。冷凍回路の体積が内部圧力へ与え
る影響を試験したものである。FIG. 4 shows that the internal volume of the
The pressure (bar) of the gas phase inside the closed vessel 17 when the weight ratio (activated carbon / refrigerant) was changed to 0.75, 1, 2 and 3 on the vertical axis (horizontal axis) and It is a graph shown. It is a test of the effect of the volume of the refrigeration circuit on the internal pressure.
【００１９】図５は、密閉容器１７の内容積を約１００
ｍｌ〜１０００ｍｌまで変え（横軸）、（活性炭／冷
媒）重量比率を０．７５、１、２および３と変えた時
の、活性炭の吸着量ｇ／ｇ（縦軸）を示したグラフであ
る。（活性炭／冷媒）重量比率が０．７５の場合、密閉
容器１７の内容積が大きくなると活性炭の吸着量が減少
する。FIG. 5 shows that the inner volume of the
FIG. 4 is a graph showing the amount of activated carbon adsorbed in g / g (vertical axis) when the weight ratio (active carbon / refrigerant) was changed to 0.75, 1, 2 and 3 while changing from 0.5 ml to 1000 ml (horizontal axis). . When the (activated carbon / refrigerant) weight ratio is 0.75, the adsorption amount of activated carbon decreases as the internal volume of the closed container 17 increases.
【００２０】図６は、密閉容器１７の内容積を約１００
ｍｌ〜１０００ｍｌまで変え（横軸）、（活性炭／冷
媒）重量比率を０．７５、１、２および３と変えた時
の、密閉容器１７の気相部に吸着されず残留した冷媒の
割合％（縦軸）を示すグラフである。密閉容器１７の内
容積が大きくなると残留量が大きくなる。FIG. 6 shows that the inner volume of the
% of the refrigerant remaining without being adsorbed in the gas phase portion of the closed vessel 17 when the weight ratio was changed to 0.75, 1, 2 and 3 (horizontal axis) and the (activated carbon / refrigerant) weight ratio was changed from 0.75 to 1000 ml. It is a graph which shows (vertical axis). As the internal volume of the closed container 17 increases, the residual amount increases.
【００２１】図７は、密閉容器１７の内容積を１００ｍ
ｌとし、（活性炭／冷媒）重量比率を０．７５、１、２
および３と変えた（横軸）時の、密閉容器１７内の気相
部の圧力（バール）、活性炭の吸着量ｇ／ｇ、密閉容器
１７の気相部に吸着されず残留した冷媒の割合％をそれ
ぞれ縦軸に示したグラフである。FIG. 7 shows that the inner volume of the closed container 17 is 100 m.
1 and the (activated carbon / refrigerant) weight ratio is 0.75, 1, 2
Pressure (bar) in the gas phase in the closed vessel 17, the amount of activated carbon adsorbed in g / g, and the ratio of the refrigerant not adsorbed and remaining in the gas phase in the closed vessel 17 when the horizontal axis is changed to 3 and 3 5 is a graph in which the vertical axis represents%.
【００２２】図４〜図７から、（活性炭／冷媒）重量比
率１以上で冷媒Ｒ１３４ａを効率よく活性炭に吸着でき
ることが判る。From FIG. 4 to FIG. 7, it can be seen that the refrigerant R134a can be efficiently adsorbed to the activated carbon at a (activated carbon / refrigerant) weight ratio of 1 or more.
【００２３】なお、本発明は上記実施形態に限定される
ものではないので、特許請求の範囲に記載の趣旨から逸
脱しない範囲で各種の変形実施が可能である。例えば、
エアコンデイショナーの場合は、室内機やリモコンにセ
ンサを設け、ガス漏れを検知すれば、冷凍回路と冷媒回
収装置を連通させる。Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the present invention. For example,
In the case of an air conditioner, a sensor is provided in an indoor unit or a remote controller, and if a gas leak is detected, the refrigeration circuit and the refrigerant recovery device are connected.
【００２４】[0024]
【発明の効果】本発明の冷媒回収装置を備えた冷凍装置
は、冷凍装置内および／または冷凍装置が設置されてい
る室内などの空間に設けた少なくとも１つのセンサが冷
凍回路から漏洩した冷媒を検知した場合は、センサから
の信号に基づいて前記開閉弁を開けて冷凍回路と前記冷
媒回収装置を連通させ、冷凍回路中の冷媒を前記固体吸
着剤に吸収するようにしてあるので、冷媒が漏洩して、
オゾン層破壊、地球温暖化、冷凍能力の低下など、悪
臭、爆発、火災、人体への悪影響などを引き起こす前
に、未然に防止できる。According to the present invention, at least one sensor provided in a refrigeration apparatus and / or a space such as a room where the refrigeration apparatus is installed detects a refrigerant leaked from the refrigeration circuit. If detected, the on-off valve is opened based on the signal from the sensor to connect the refrigeration circuit and the refrigerant recovery device, and the refrigerant in the refrigeration circuit is absorbed by the solid adsorbent. Leak,
It can be prevented before it causes odors, explosions, fires, and harm to humans, such as depletion of the ozone layer, global warming, and reduced refrigeration capacity.
【００２５】特に冷媒がプロパン、ブタン、ペンタンな
どの可燃性のある炭化水素類やアンモニアなどの自然冷
媒の場合は、漏洩すると危険が大きいが、センサが冷凍
回路から冷媒の漏洩を検知し、このセンサから制御装置
へ信号を送り、検知した漏洩量、漏洩持続時間、漏洩パ
ターンなどが予め決められた基準値などを超えた場合
は、制御装置から信号を電磁弁へ送り、電磁弁を開ける
ことにより直ちに、冷凍回路中の冷媒を冷媒回収装置に
全量回収して、危険を未然に防止できる。In particular, when the refrigerant is a flammable hydrocarbon such as propane, butane or pentane or a natural refrigerant such as ammonia, there is a great danger of leakage, but a sensor detects leakage of the refrigerant from the refrigeration circuit. When a signal is sent from the sensor to the control device and the detected leakage amount, leakage duration, leakage pattern, etc. exceed a predetermined reference value, the control device sends a signal to the solenoid valve and opens the solenoid valve. As a result, the entire amount of the refrigerant in the refrigeration circuit is recovered to the refrigerant recovery device, and danger can be prevented.
【００２６】本発明の冷凍装置の冷凍回路中の冷媒に指
標物質を含有させておくと、漏洩した冷媒がこの冷凍装
置に起因するものであるか、あるいは他に起因するもの
かを区別してセンサにより検知できる。If the refrigerant in the refrigeration circuit of the refrigeration system of the present invention contains an indicator substance, it is possible to discriminate whether the leaked refrigerant is caused by the refrigeration system or another. Can be detected.
【００２７】センサが冷凍回路から漏洩した冷媒を検知
した場合、センサからの信号に基づいて警報ランプや警
報ブザーを作動させれば、危険を早く知り対処できる。When the sensor detects the refrigerant leaking from the refrigeration circuit, by operating an alarm lamp or an alarm buzzer based on a signal from the sensor, the danger can be quickly known and dealt with.
【図１】 本発明の冷媒回収装置を備えた冷蔵庫の一実
施の形態を示す説明図である。FIG. 1 is an explanatory view showing an embodiment of a refrigerator provided with a refrigerant recovery device of the present invention.
【図２】 図１に示した冷蔵庫の冷媒回路に冷媒回収装
置を連結した状態を示す説明図である。FIG. 2 is an explanatory diagram showing a state in which a refrigerant recovery device is connected to the refrigerant circuit of the refrigerator shown in FIG.
【図３】 活性炭の冷媒吸着性能を試験するための実験
装置の断面説明図である。FIG. 3 is an explanatory cross-sectional view of an experimental device for testing the refrigerant adsorption performance of activated carbon.
【図４】 密閉容器の内容積を約１００ｍｌ〜１０００
ｍｌまで変え（横軸）、（活性炭／冷媒）重量比率を
０．７５、１、２および３と変えた時の、密閉容器内の
気相部の圧力（バール）を縦軸に示したグラフである。[Fig. 4] The inner volume of the closed container is set to about 100 ml to 1000
graph showing the pressure (bar) of the gas phase in the closed vessel when the weight ratio (activated carbon / refrigerant) was changed to 0.75, 1, 2, and 3 (vertical axis). It is.
【図５】 密閉容器の内容積を約１００ｍｌ〜１０００
ｍｌまで変え（横軸）、（活性炭／冷媒）重量比率を
０．７５、１、２および３と変えた時の、活性炭の吸着
量ｇ／ｇ（縦軸）を示したグラフである。FIG. 5: The inner volume of the closed container is approximately 100 ml to 1000
5 is a graph showing the amount of adsorbed activated carbon g / g (vertical axis) when the weight ratio (active carbon / refrigerant) was changed to 0.75, 1, 2, and 3 while changing the amount to 0.7 ml (horizontal axis).
【図６】 密閉容器の内容積を約１００ｍｌ〜１０００
ｍｌまで変え（横軸）、（活性炭／冷媒）重量比率を
０．７５、１、２および３と変えた時の、密閉容器の気
相部に吸着されず残留した冷媒の割合％（縦軸）を示す
グラフである。FIG. 6: The inner volume of the closed container is set to about 100 ml to 1000
ml (horizontal axis) and the percentage of refrigerant remaining without being adsorbed in the gas phase portion of the closed vessel (vertical axis) when the (activated carbon / refrigerant) weight ratio is changed to 0.75, 1, 2 and 3. FIG.
【図７】 密閉容器の内容積を１００ｍｌとし、（活性
炭／冷媒）重量比率を０．７５、１、２および３と変え
た（横軸）時の、密閉容器内の気相部の圧力（バー
ル）、活性炭の吸着量ｇ／ｇ、密閉容器の気相部に吸着
されず残留した冷媒の割合％をそれぞれ縦軸に示したグ
ラフである。FIG. 7 shows the pressure of the gas phase in the closed vessel when the inner volume of the closed vessel is 100 ml and the (activated carbon / refrigerant) weight ratio is changed to 0.75, 1, 2 and 3 (horizontal axis). (Bar), the amount of adsorbed activated carbon (g / g), and the percentage of the refrigerant remaining without being adsorbed in the gas phase of the closed vessel are plotted on the vertical axis.
１ 冷蔵庫 ２ 圧縮機 ３ 凝縮器 ４ キャピラリーチューブ ５ 蒸発器 ６ 冷媒回収装置 ７ 管路 ８ 開閉弁 ９ 固体吸着剤 １０ 冷媒回収本体 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Compressor 3 Condenser 4 Capillary tube 5 Evaporator 6 Refrigerant recovery apparatus 7 Pipe line 8 On-off valve 9 Solid adsorbent 10 Refrigerant recovery main body
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井上 勝彦 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 吉田 福治 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 井汲 米造 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Katsuhiko Inoue 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Fukuji Yoshida 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Izumi Yonezo 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.
Claims (4)
設けた開閉弁と、前記管路に接続されるとともに冷凍回
路中の冷媒を選択的に吸着できる固体吸着剤を収容した
冷媒回収本体とを備えた冷媒回収装置を備えた冷凍装置
であって、前記冷凍装置内および／または前記冷凍装置
が設置されている室内などの空間に設けた少なくとも１
つのセンサが冷凍回路から漏洩した冷媒を検知した場合
は、前記センサからの信号に基づいて前記開閉弁を開け
て冷凍回路と前記冷媒回収装置を連通させ、冷凍回路中
の冷媒を前記固体吸着剤に吸着することを特徴とする冷
媒回収装置を備えた冷凍装置。1. A pipe connected to a refrigeration circuit, an on-off valve provided in the pipe, and a refrigerant connected to the pipe and containing a solid adsorbent capable of selectively adsorbing the refrigerant in the refrigeration circuit. A refrigeration system including a refrigerant recovery device including a recovery main body, wherein at least one of the refrigeration systems is provided in a space such as a room inside the refrigeration device and / or a room where the refrigeration device is installed.
When one of the sensors detects the refrigerant leaking from the refrigeration circuit, the on-off valve is opened based on a signal from the sensor to communicate the refrigeration circuit with the refrigerant recovery device, and the refrigerant in the refrigeration circuit is supplied to the solid adsorbent. A refrigeration system comprising a refrigerant recovery device characterized by being adsorbed on a refrigerant.
などの炭化水素類などの自然冷媒であることを特徴とす
る請求項１記載の冷凍装置。2. The refrigeration system according to claim 1, wherein the refrigerant is a natural refrigerant such as hydrocarbons such as ammonia, propane and butane.
る請求項２記載の冷凍装置。3. The refrigeration apparatus according to claim 2, wherein the refrigerant contains an indicator substance.
備え、前記センサが冷凍回路から漏洩した冷媒を検知し
た場合は、前記センサからの信号に基づいて前記警報ラ
ンプおよび／警報ブザーを作動させることを特徴とする
請求項１から請求項３のいずれかに記載の冷凍装置。4. An alarm lamp and / or an alarm buzzer are provided, and when the sensor detects refrigerant leaking from the refrigeration circuit, the alarm lamp and / or the alarm buzzer are activated based on a signal from the sensor. The refrigeration apparatus according to any one of claims 1 to 3, wherein
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10163795A JPH11351711A (en) | 1998-06-11 | 1998-06-11 | Freezer with refrigerant recovery device |
| EP99925305A EP1014015A4 (en) | 1998-06-11 | 1999-06-11 | Refrigerant collecting device, refrigerant collecting method, refrigerator having refrigerant collecting device, control method for refrigerant in refrigerant circuit or regeneration device and regeneration method for refrigerant collecting device |
| KR1020007001361A KR100564869B1 (en) | 1998-06-11 | 1999-06-11 | Refrigerant collecting device, refrigerant collecting method, refrigerator having refrigerant collecting device, control method for refrigerant in refrigerant circuit or regeneration device and regeneration method for refrigerant collecting device |
| CNB998009377A CN1153032C (en) | 1998-06-11 | 1999-06-11 | Refrigerant regenerating device, refrigerant regenerating method, refrigerator having refrigerant regenerating device, control method for refrigerant circuit or recovery |
| PCT/JP1999/003133 WO1999064799A1 (en) | 1998-06-11 | 1999-06-11 | Refrigerant collecting device, refrigerant collecting method, refrigerator having refrigerant collecting device, control method for refrigerant in refrigerant circuit or regeneration device and regeneration method for refrigerant collecting device |
| US09/485,638 US6449962B1 (en) | 1998-06-11 | 1999-06-11 | Refrigerant collecting device, refrigerant collecting method, refrigerator having refrigerant collecting device, control method for refrigerant in refrigerant circuit or regeneration device and regeneration method for refrigerant collecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10163795A JPH11351711A (en) | 1998-06-11 | 1998-06-11 | Freezer with refrigerant recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11351711A true JPH11351711A (en) | 1999-12-24 |
Family
ID=15780856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10163795A Pending JPH11351711A (en) | 1998-06-11 | 1998-06-11 | Freezer with refrigerant recovery device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11351711A (en) |
Cited By (2)
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| JP2004125200A (en) * | 2002-09-30 | 2004-04-22 | Sanyo Electric Co Ltd | Refrigerant recovering device and refrigerant recovering method using this device |
| JP2007512396A (en) * | 2003-11-13 | 2007-05-17 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Detectable refrigerant composition and use thereof |
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