JPH0771842A - Cooling device - Google Patents

Cooling device

Info

Publication number
JPH0771842A
JPH0771842A JP21667793A JP21667793A JPH0771842A JP H0771842 A JPH0771842 A JP H0771842A JP 21667793 A JP21667793 A JP 21667793A JP 21667793 A JP21667793 A JP 21667793A JP H0771842 A JPH0771842 A JP H0771842A
Authority
JP
Japan
Prior art keywords
filter
refrigerant
refrigerants
foreign matter
cooling device
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
Application number
JP21667793A
Other languages
Japanese (ja)
Inventor
Takashi Yoshida
吉田  孝
Kumiko Nakayama
久美子 中山
Akira Tanaka
章 田中
Kimito Sakai
公人 酒井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP21667793A priority Critical patent/JPH0771842A/en
Publication of JPH0771842A publication Critical patent/JPH0771842A/en
Pending legal-status Critical Current

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  • Filtering Materials (AREA)

Abstract

PURPOSE:To obtain a cooling device provided with a foreign matter removal means which is capable of removing a foreign matter to a satisfactory extent and being free of a source of refrigerant contamination for its self by installing a cooling device which circulates refrigerants by way of a filter device which provides a particulate filler and a filmy filter. CONSTITUTION:A filter device 1 is designed to install a metal filter 11, which sinters various kinds of fillers, such as a molecular sieve 5, activated coal 7, silica gel 9 and tungsten particles, in a copper-made large-sized pipe, for example. A teflon filter 13 is installed to the outlet of the fillers while a metal net 15 is installed between these fillers as well, thereby filtering a foreign matter from refrigerants flowing out from a compressor and discharging cleaned refrigerants 30. This construction makes it possible to remove foreign matters from the refrigerants 20 with high efficiency and adopt other refrigerants which do not include Freon or fluorocarbons for a cooling cycle.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、冷媒を循環させる冷却
サイクルを備える冷蔵庫、冷凍庫などの冷却装置に関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device such as a refrigerator or a freezer having a cooling cycle for circulating a refrigerant.

【0002】[0002]

【従来の技術】従来、冷蔵庫、冷凍庫、クーラー等の冷
却装置の冷却サイクル用冷媒にはフロンCFC−12、
CFC−115、R−502(HCFC−22/CFC
−115の混合冷媒)等が用いられていた。このような
フロン剤は、非常に安定性の高い優れた冷媒である。し
かし、近年、フロンのオゾン層に与える影響が問題とな
って以来、フロンの使用規制が強化され、冷却装置に使
用する冷媒も、HCFC−22、HFC−134a等の
代替フロン剤や冷媒として使用可能な他の物質への変更
を余儀なくされている。
2. Description of the Related Art Conventionally, Freon CFC-12 is used as a refrigerant for a cooling cycle of a cooling device such as a refrigerator, a freezer and a cooler.
CFC-115, R-502 (HCFC-22 / CFC
(-115 mixed refrigerant) and the like were used. Such a CFC agent is a highly stable and excellent refrigerant. However, since the influence of CFCs on the ozone layer has become a problem in recent years, the restrictions on the use of CFCs have been tightened, and the refrigerants used in the cooling devices are also used as alternative CFC agents and refrigerants such as HCFC-22 and HFC-134a. Forced to change to other possible substances.

【0003】フロンの使用規制に従って、フロン代替剤
や他の冷媒を冷却装置へ適用する場合、冷却装置のコン
プレッサに用いられる潤滑油も冷媒と相性の良いものに
交換することが必要となる。又、CFC−113等の冷
却装置の製造組立工程に洗浄剤として使用されるものに
ついてもフロン代替剤等に代えるか、あるいは、他の洗
浄方法に変更しなければならない。
When a CFC substitute or other refrigerant is applied to a cooling device in accordance with the regulations for the use of CFCs, it is necessary to replace the lubricating oil used in the compressor of the cooling device with one that is compatible with the refrigerant. Further, those used as a cleaning agent in the manufacturing and assembling process of the cooling device such as CFC-113 must be replaced with a CFC substitute or the like, or must be changed to another cleaning method.

【0004】このような変更を実施すると、冷媒中に様
々な異物や不純物の混入あるいは発生がめだつようにな
る。
When such changes are made, various foreign substances and impurities are mixed or generated in the refrigerant.

【0005】このような異物、混入物を冷媒から除去し
ないまま冷却装置を作動し続けると、これらの異物が冷
媒の循環を阻害する。特に、冷却サイクルにはキャピラ
リチューブと呼ばれる細い流路があり、このような部分
で目詰まりなどを起こし易い。従って、冷媒の循環不足
又は循環停止によって冷却装置の故障を短期間で引き起
こし、装置の耐用年数が短くなる。故に、商品価値の非
常に低いものしか得られない。従って、フロンCFC−
12等を用いない冷却装置を実用化するためには、異物
による循環阻害の問題を解決しなければならない。
If the cooling device is continuously operated without removing such foreign matters and contaminants from the refrigerant, these foreign matters impede the circulation of the refrigerant. In particular, the cooling cycle has a narrow flow path called a capillary tube, and it is easy for clogging to occur at such a portion. Therefore, due to insufficient circulation or stoppage of circulation of the refrigerant, a failure of the cooling device is caused in a short period of time, and the service life of the device is shortened. Therefore, only products with very low commercial value can be obtained. Therefore, Freon CFC-
In order to put into practical use a cooling device that does not use 12 or the like, it is necessary to solve the problem of circulation inhibition due to foreign matter.

【0006】現状において、冷媒に含まれる異物の除去
技術に関しては、除湿剤として一般に用いられているモ
レキュラシーブを充填したカラムを冷却サイクルに組み
込んだものが提案されている。
At present, as a technique for removing foreign matters contained in a refrigerant, a column in which a molecular sieve, which is generally used as a dehumidifying agent, is packed in a cooling cycle has been proposed.

【0007】[0007]

【発明が解決しようとする課題】しかし、モレキュラシ
ーブは破砕し易く、コンプレッサの振動により容易に微
細粉末が生じ、かえって冷媒汚染の原因になり易い。こ
のため、上記提案の積極的採用は見られていない。又、
フロンCFC−12等が非常に優れた冷媒であるために
上述のような問題が生じることは少なかったので、異物
除去について注目されたことは過去において殆どなく、
上記以外にこれといった提案はなされていない。
However, the molecular sieve is easily crushed, and fine powder is easily generated by the vibration of the compressor, which is likely to cause refrigerant contamination. For this reason, active adoption of the above proposal has not been seen. or,
Since Freon CFC-12 and the like are extremely excellent refrigerants, the above-mentioned problems rarely occur, so that attention to foreign matter removal has been rare in the past.
Other than the above, no other proposal has been made.

【0008】本発明は、この様な課題を解決するために
なされたもので、異物の除去能に優れ、自ら冷媒汚染の
源となることのない異物除去手段を備えた冷却装置を提
供することを目的とするものである。
The present invention has been made in order to solve such a problem, and provides a cooling device having a foreign matter removing means which is excellent in foreign matter removing ability and which does not itself become a source of refrigerant pollution. The purpose is.

【0009】[0009]

【課題を解決するための手段】上記目的を達成するため
に、本発明者らは鋭意研究を重ねた結果、粒子状充填剤
と膜状フィルターとを組み合わせることにより効率よく
異物を除去できることを見いだし、本発明の冷却装置を
発明するに至った。
[Means for Solving the Problems] In order to achieve the above object, the present inventors have conducted extensive studies and found that a foreign substance can be efficiently removed by combining a particulate filler and a membrane filter. Invented the cooling device of the present invention.

【0010】本発明の冷却装置は、粒子状充填剤と膜状
フィルターとを備える濾過装置を通して冷媒を循環させ
る冷却サイクルを備えることを特徴とする。
The cooling device of the present invention is characterized by comprising a cooling cycle in which a refrigerant is circulated through a filtering device having a particulate filler and a membrane filter.

【0011】[0011]

【作用】粒子状充填剤と膜状フィルターとを備える除去
装置を冷媒が通過する際に、粒子状充填剤は比較的大き
めの異物粒子を補足し、且つ、その種類に応じて冷媒中
の異物を充填剤の表面や空孔内に吸着する。充填剤によ
って補足されない比較的小さい異物粒子は膜状フィルタ
ーによって冷媒から除去される。異物粒子の補足が粒子
状充填剤と膜状フィルターとで分散して行われ、充填剤
の粒子補足力及び吸着力の阻害が防がれる。
When the refrigerant passes through the removing device including the particulate filler and the membrane filter, the particulate filler traps relatively large particles of foreign matter, and the foreign matter in the refrigerant depends on its type. Are adsorbed on the surface of the filler and in the pores. The smaller foreign particles that are not captured by the filler are removed from the refrigerant by the membrane filter. The foreign particles are captured by being dispersed by the particulate filler and the membrane filter, and the obstruction of the particle trapping force and adsorption force of the filler can be prevented.

【0012】以下、本発明をさらに詳細に説明する。The present invention will be described in more detail below.

【0013】フロンの使用規制に対応すべく冷媒、潤滑
油及び洗浄剤を変更する場合、生じる変化は以下のよう
なものである。
When the refrigerant, the lubricating oil, and the cleaning agent are changed in order to comply with the regulations for the use of CFCs, the changes that occur are as follows.

【0014】まず、従来用いられていたフロンCFC−
12等は非常に安定で高い溶解性を有する物質であるの
で、冷媒を代替剤に変更することによって、循環中の冷
媒の分解等や潤滑油との反応によって老廃物が生じ易く
なる。そして、代替剤の溶解性の低さによって、これら
の老廃物が冷媒から析出し易くなり、又、フロンCFC
−12等を用いた場合には元来問題とならない程度の異
物も、析出することになる。
First, the conventionally used Freon CFC-
Since 12 and the like are substances that are extremely stable and have high solubility, by changing the refrigerant to an alternative agent, waste products are easily generated due to decomposition of the circulating refrigerant or reaction with the lubricating oil. And, due to the low solubility of the substitute agent, these waste substances are likely to precipitate from the refrigerant, and the fluorocarbon CFC
When -12 or the like is used, a foreign substance that does not cause a problem is deposited.

【0015】更に、コンプレッサの潤滑油を変更するこ
とによって、潤滑性能や潤滑油の安定性が変わり、潤滑
油の分解物やコンプレッサの摺動部の摩耗粉の量が増加
する可能性がある。フロンCFC−12等より溶解能の
低いフロン代替剤等はこれらの不純物を取り込んだまま
循環することができず、不純物がタール状に析出して循
環経路中に付着したり目詰まりを起こす。
Furthermore, by changing the lubricating oil of the compressor, the lubricating performance and the stability of the lubricating oil may change, and the amount of decomposed products of the lubricating oil and the amount of abrasion powder on the sliding parts of the compressor may increase. Freon CFC-12, which has a lower solubility than freon, cannot be circulated while incorporating these impurities, and the impurities are deposited in the form of tar and adhere to the circulation path or cause clogging.

【0016】冷却装置の製造組立工程で用いる洗浄剤を
変えることにより高い洗浄力が得られず、製造組立工程
に用いた加工油や水分が残存し易くなる。又、洗浄剤を
用いない浄化方法、例えば、紙や布等を用いた作業に切
り替えると、用いた紙、布等の微小繊維が混入する可能
性が増加する。
By changing the cleaning agent used in the manufacturing and assembling process of the cooling device, a high detergency cannot be obtained, and the processing oil and water used in the manufacturing and assembling process easily remain. Further, if the cleaning method without using the cleaning agent, for example, switching to the work using paper or cloth is used, the possibility that the used fine fibers such as paper or cloth are mixed increases.

【0017】従って、冷却サイクルの冷媒は、繊維屑な
どの大きめの異物から摩耗粉などの微粉体、タール状の
油性物から混入水分まで、様々な異物を含むことになる
ので、本発明においては、これら全てを長期期間にわた
って除去可能な濾過装置が冷却サイクルに組み込まれ
る。本発明において組み込まれる濾過装置は、粒子状充
填剤と膜状フィルターとを組み合わせたものである。
Therefore, the refrigerant in the cooling cycle contains various foreign substances such as large foreign substances such as fiber dust, fine powder such as abrasion powder, tar-like oily substances and mixed water. , A filter device capable of removing all of these over a long period of time is incorporated into the cooling cycle. The filtration device incorporated in the present invention is a combination of a particulate filler and a membrane filter.

【0018】一般的に、粒子状充填剤は、カラム等に充
填した状態において間隙を有する濾過手段を構成し、そ
の間隙の大きさは、充填剤粒子の粒径を調整することに
よってある程度制御することができる。しかし、極度に
小さい間隙を正確に形成するのは細かい充填剤を用いて
もかなり難しく、そのような充填剤をカラム中に確実に
保持しなければ逆に冷媒の汚染源となる。
Generally, the particulate filler constitutes a filtering means having a gap in a state of being packed in a column or the like, and the size of the gap is controlled to some extent by adjusting the particle size of the filler particles. be able to. However, it is quite difficult to form extremely small gaps accurately even with a fine packing, and if such a packing is not securely held in the column, it becomes a contaminating source of the refrigerant.

【0019】一方、膜状フィルターは、近年、開発がめ
ざましく、高機能、特殊機能を有する様々なフィルター
が供給されている。特に、微粒子を対象とした膜状フィ
ルターは優れたものが開発されており、冷却サイクルの
キャピラリ状流路を塞ぐ細かい異物を確実に除去するこ
とができる。しかし、膜状フィルターは、多量の粒子を
濾過することには不向きであり、多量の粒子を扱うため
には濾過面積を極度に大きくしなければならないという
欠点がある。従って、冷媒を長期間濾過し続けるのを可
能にするような膜状フィルターは、非常に高額、且つ、
構造的にも簡便でないものとならざるを得ない。
On the other hand, the membrane filter has been remarkably developed in recent years, and various filters having high functions and special functions have been supplied. In particular, an excellent membrane filter for fine particles has been developed, and it is possible to reliably remove fine foreign substances that block the capillary flow path of the cooling cycle. However, the membrane filter is not suitable for filtering a large amount of particles, and has a drawback that the filtration area must be extremely large in order to handle a large amount of particles. Therefore, a membranous filter that makes it possible to continue to filter the refrigerant for a long time is very expensive and
It must be structurally not simple.

【0020】冷媒をフロンCFC−12等以外のものに
変えた場合に循環障害を起こす異物は、前述のように、
様々な大きさの粒子状物を含み、例えば、0.5〜1μ
m程度の小さいものから1mm程度の大きいものもあり、
又、繊維片やタール状有機析出物などをも含む多彩なも
のであるので、冷媒から異物を除去するためには、対象
物に幅広く適応可能であることが望まれる。又、長期間
の使用を可能とするために、除去容量が大きくなければ
ならない。このようなことを考慮した結果、本発明者ら
は、粒子状充填剤と膜状フィルターとを組み合わせるこ
とによって、幅広く適応でき高容量の濾過装置を安価に
構成することに成功した。
As described above, the foreign matter that causes a circulation failure when the refrigerant is changed to one other than Freon CFC-12, etc.
Includes particles of various sizes, eg 0.5-1 μ
Some of them are as small as m and some are as large as 1 mm.
In addition, since it is a wide variety of materials including fiber fragments and tar-like organic deposits, it is desirable that the refrigerant can be widely applied to objects in order to remove foreign substances from the refrigerant. In addition, the removal capacity must be large to enable long-term use. As a result of considering such a fact, the present inventors have succeeded in constructing a filtration device having a wide range of applicability and a high capacity at low cost by combining a particulate filler and a membrane filter.

【0021】本発明において、粒子状充填剤として用い
られるものには、各種吸着剤、多孔質剤が挙げられる。
例えば、吸着剤としては、通常乾燥剤として使用される
モレキュラシーブやシリカゲル、脱色脱臭剤として用い
られる活性炭や酸性白土、活性白土等を、多孔質剤とし
てはベントナイト、ケイソウ土等の各種多孔質セラミッ
クスを挙げることができる。これらは必要に応じて様々
な粒径に調製し得るが、一般的に安価に入手されるもの
は、500μm〜5mm程度の粒径であり、このような粒
径のものを充填した場合、充填剤の間隙は、80μm〜
0.8mm程度になる。
In the present invention, as the particulate filler, various adsorbents and porous agents can be mentioned.
For example, as the adsorbent, molecular sieve or silica gel that is usually used as a desiccant, activated carbon or acid clay, activated clay that is used as a decolorizing deodorant, etc. as a porous agent, bentonite, various porous ceramics such as diatomaceous earth. Can be mentioned. These can be prepared in various particle sizes as needed, but generally, those that are inexpensively available have a particle size of about 500 μm to 5 mm. The gap between the agents is 80 μm
It will be about 0.8 mm.

【0022】他方、膜状フィルターとしては、例えば、
ポリテトラフロオロエチレン(以下PTFEと称す)、
ポリエチレン、ポリプロピレン等の高分子フィルターが
挙げられ、特に、PTFEフィルターは、耐熱性や機械
強度などの面にも優れており、安定性が高いので、本発
明に適用するものとして特に好ましい。平均的なPTF
Eフィルターは、0.2〜0.5μm程度の細孔を有
し、冷媒に混在する異物粒子のうちの最小クラスのもの
を確実に除去することができる。又、充填剤粒子が振動
などによって破砕して細粉を生じても十分に対応するこ
とができる。
On the other hand, as the membrane filter, for example,
Polytetrafluoroethylene (hereinafter referred to as PTFE),
Examples thereof include polymer filters such as polyethylene and polypropylene. Particularly, the PTFE filter is excellent in heat resistance and mechanical strength and has high stability, and thus is particularly preferable as a filter applied to the present invention. Average PTF
The E filter has pores of about 0.2 to 0.5 μm, and can reliably remove the smallest class of foreign particles mixed in the refrigerant. Further, even if the filler particles are crushed by vibration or the like to generate fine powder, it is possible to sufficiently cope with the problem.

【0023】従って、本発明に係る冷却装置の濾過装置
においては、粒子状充填剤は比較的大きな異物を多量に
捕獲する役割をし、膜状フィルターは微小異物を捕獲す
る。つまり、分級捕獲がなされるため、両材の欠点が補
われ、異物の捕獲容量の確保と捕獲レベルの向上とが実
現される。
Therefore, in the filtering device of the cooling device according to the present invention, the particulate filler plays a role of capturing a large amount of a relatively large foreign substance, and the membrane filter captures a minute foreign substance. That is, since the classification and capture are performed, the defects of both materials are compensated, and the capture capacity of foreign matter is secured and the capture level is improved.

【0024】上記構成においては、粒子径の異なった粒
子状充填剤を濾過装置の長手方向(冷媒の流れる方向)
に沿って粒径が次第に減少するように配列することによ
って、更に異物を分散させて捕獲を行うことができる。
つまり、二次元的ではなく、三次元的に濾過が行われ
る。このように粒径に従って充填剤を配列することによ
って、充填剤の間隙が冷媒の流れ方向にそって進むに従
って次第に小さくなり、異物の分級捕獲は細分化して行
われる。この分級捕獲を可能にする充填構成は、単に充
填剤の物理的濾過効率だけではなく、特定物質を吸着す
る吸着剤の吸着効率をも上昇させる。つまり、特定の吸
着能力を有する充填剤が被捕獲粒子によって吸着を阻害
されるのを減少させることができるため、吸着力が発揮
し易くなる。従って、各充填剤の固有性能と冷媒中の異
物組成を考慮して、充填剤の配列についても工夫がなさ
れるのが好ましい。
In the above structure, the particulate fillers having different particle diameters are added in the longitudinal direction of the filtering device (direction in which the refrigerant flows).
By arranging the particles so that the particle diameter gradually decreases, it is possible to further disperse and capture the foreign matter.
That is, the filtration is performed three-dimensionally instead of two-dimensionally. By arranging the fillers according to the particle diameters in this way, the gaps between the fillers become gradually smaller as they advance along the flow direction of the refrigerant, and the classification and trapping of foreign matter is performed in smaller pieces. The packing configuration that enables the classification capture increases not only the physical filtration efficiency of the packing material but also the adsorption efficiency of the adsorbent that adsorbs the specific substance. That is, it is possible to reduce the inhibition of adsorption of the filler having a specific adsorption capacity by the particles to be captured, so that the adsorption force is easily exerted. Therefore, it is preferable that the arrangement of the fillers be devised in consideration of the inherent performance of each filler and the composition of the foreign matter in the refrigerant.

【0025】上記充填剤は、膜状フィルターを取り付け
た管に充填される。管は、例えば銅管のように、加工や
溶接がし易く、冷却サイクル内にかかる圧力によって変
形しない材料で、且つ、それ自体が冷媒の正常な循環を
阻害する異物を発生しない材料を用いて作成される。膜
状フィルターは、液圧によって動くことのないように管
に固定され、前記構成に従って充填剤が充填される。濾
過装置の組立中に充填剤が管内で動くのを防止するため
に、充填剤の上流側端部は、銅製の網などで保持するの
が好ましい。更に、各種充填剤の間を網で仕切ってもよ
い。このような網は、充填剤が混ざり合うのを防いだ
り、冷媒の流圧による負荷がフィルターのみにかからな
いように分散させる役割をする。
The above-mentioned filler is filled in a tube equipped with a membrane filter. The pipe is made of a material, such as a copper pipe, which is easy to process and weld, and which is not deformed by the pressure applied in the cooling cycle, and which itself does not generate a foreign substance that hinders the normal circulation of the refrigerant. Created. The membranous filter is fixed to the tube so as not to move by hydraulic pressure, and is filled with the filler according to the above configuration. The upstream end of the filler is preferably retained, such as by a copper net, to prevent the filler from moving within the tube during assembly of the filter. Further, a net may be used to partition between the various fillers. Such a mesh serves to prevent the fillers from being mixed with each other and to disperse the load by the flow pressure of the refrigerant so that the load is not applied only to the filter.

【0026】[0026]

【実施例】以下、添付図面を参照し、本発明の一実施例
を詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

【0027】図1は、本発明の冷却装置に組み込まれる
濾過装置1を示す。濾過装置1は、銅製の管3を有し、
上流及び下流のろうと状入口部及び出口部と、中央の大
径部とから構成される。管3の大径部内に充填剤5、
7、9、11が充填される。充填剤5は粒径5mmのモレ
キュラシーブ、7は粒径3mmの活性炭、9は粒径1mmの
シリカゲル、11はタングステン粉末を焼結して得られ
た細孔径800μmのメタルフィルターである。充填剤
の出口側には、細孔径0.5μmの細孔(空隙率70〜
80%)を有するテフロンフィルター13が設けられ、
管3に固定されている。各充填剤及びフィルターの境界
及び端部に銅製の金網15が配設されている。
FIG. 1 shows a filtration device 1 incorporated in the cooling device of the present invention. The filtration device 1 has a copper tube 3,
It is composed of upstream and downstream wax-like inlets and outlets, and a central large-diameter portion. Filler 5 in the large diameter part of pipe 3,
7, 9, 11 are filled. The filler 5 is a molecular sieve having a particle size of 5 mm, 7 is activated carbon having a particle size of 3 mm, 9 is silica gel having a particle size of 1 mm, and 11 is a metal filter having a pore size of 800 μm obtained by sintering tungsten powder. On the outlet side of the filler, pores having a pore diameter of 0.5 μm (porosity 70 to 70
Teflon filter 13 having 80%),
It is fixed to the pipe 3. Copper wire mesh 15 is arranged at the boundary and end of each filler and filter.

【0028】コンプレッサから流れる冷媒20は、濾過
装置1のモレキュラシーブによって繊維屑や比較的大き
い摩耗粉及び水分が除去される。次に、活性炭により有
機質不純物が吸着除去され、シリカゲルによって水分及
び有機質不純物、特に塩基性不純物が除去される。この
間に同時に、粒径1500μm程度の固体粒子も除去さ
れる。メタルフィルターを通る間に、粒径800〜15
00μm程度の微小粒子が除去され、最後に、テフロン
フィルター13によって粒径0.5μm以上の極小粒子
が除去される。従って、濾過装置1を通過した冷媒30
は、殆ど異物を含まないものとなり、この後、冷却サイ
クルを循環する。
From the refrigerant 20 flowing from the compressor, fiber debris, relatively large abrasion powder and water are removed by the molecular sieve of the filtration device 1. Next, activated carbon adsorbs and removes organic impurities, and silica gel removes water and organic impurities, especially basic impurities. At the same time, the solid particles having a particle diameter of about 1500 μm are also removed. While passing through the metal filter, particle size 800 ~ 15
Fine particles of about 00 μm are removed, and finally, ultrafine particles having a particle size of 0.5 μm or more are removed by the Teflon filter 13. Therefore, the refrigerant 30 that has passed through the filtration device 1
Becomes almost free of foreign matter, and thereafter, the cooling cycle is circulated.

【0029】[0029]

【発明の効果】以上説明したように、本発明の冷却装置
は、不純物を効率よく冷媒から除去することができる濾
過装置を備えるものであり、冷却サイクルにフロン以外
の冷媒の使用を可能とするものであるので、その工業的
価値は極めて大である。また、本発明の冷却装置は、濾
過装置によって長期間冷媒の循環阻害を防ぐことができ
るので、長寿命の製品となる。
As described above, the cooling device of the present invention is provided with the filtering device capable of efficiently removing impurities from the refrigerant, and enables the use of a refrigerant other than CFCs in the cooling cycle. Therefore, its industrial value is extremely large. In addition, the cooling device of the present invention can prevent the circulation of the refrigerant from being obstructed for a long period of time by the filtering device, and thus can be a product with a long life.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の冷却装置の濾過装置を示す断面図であ
る。
FIG. 1 is a cross-sectional view showing a filtering device of a cooling device of the present invention.

【符号の説明】[Explanation of symbols]

1 濾過装置 5 モレキュラシーブ 7 活性炭 9 シリカゲル 11 メタルフィルター 13 テフロンフィルター 1 Filtration device 5 Molecular sieve 7 Activated carbon 9 Silica gel 11 Metal filter 13 Teflon filter

───────────────────────────────────────────────────── フロントページの続き (72)発明者 酒井 公人 神奈川県川崎市幸区小向東芝町1 株式会 社東芝研究開発センター内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kimito Sakai 1 Komukai Toshiba-cho, Kouki-ku, Kawasaki-shi, Kanagawa Toshiba Research & Development Center

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 粒子状充填剤と膜状フィルターとを備え
る濾過装置を通して冷媒を循環させる冷却サイクルを備
えることを特徴とする冷却装置。
1. A cooling device comprising a cooling cycle in which a refrigerant is circulated through a filtering device comprising a particulate filler and a membrane filter.
JP21667793A 1993-08-31 1993-08-31 Cooling device Pending JPH0771842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21667793A JPH0771842A (en) 1993-08-31 1993-08-31 Cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21667793A JPH0771842A (en) 1993-08-31 1993-08-31 Cooling device

Publications (1)

Publication Number Publication Date
JPH0771842A true JPH0771842A (en) 1995-03-17

Family

ID=16692198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21667793A Pending JPH0771842A (en) 1993-08-31 1993-08-31 Cooling device

Country Status (1)

Country Link
JP (1) JPH0771842A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975527A3 (en) * 2007-03-28 2010-04-14 Hitachi Appliances, Inc. Refrigeration cycle apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1975527A3 (en) * 2007-03-28 2010-04-14 Hitachi Appliances, Inc. Refrigeration cycle apparatus

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