JPH08240360A - Freezer and pressure reducing device for freezer - Google Patents
Freezer and pressure reducing device for freezerInfo
- Publication number
- JPH08240360A JPH08240360A JP7083070A JP8307095A JPH08240360A JP H08240360 A JPH08240360 A JP H08240360A JP 7083070 A JP7083070 A JP 7083070A JP 8307095 A JP8307095 A JP 8307095A JP H08240360 A JPH08240360 A JP H08240360A
- Authority
- JP
- Japan
- Prior art keywords
- pressure reducing
- orifices
- refrigerant
- refrigerator
- orifice
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/38—Expansion means; Dispositions thereof specially adapted for reversible cycles, e.g. bidirectional expansion restrictors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は冷凍機及び冷凍機用の
減圧装置に関するもので、特に冷媒回路内の残留不純物
による減圧装置の詰まりを防止するようにした冷凍機及
び冷凍機用の減圧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 refrigerator and a pressure reducing device for a refrigerator, and more particularly to a refrigerator and a pressure reducing device for a refrigerator for preventing clogging of the pressure reducing device due to residual impurities in a refrigerant circuit. It is about.
【０００２】[0002]
【従来の技術】近年、オゾン層破壊防止用としてＨＣＦ
Ｃ２２用空調・冷凍機の代替冷媒化を行う必要が生じて
いるが、この際、冷媒と共に冷凍機油も同時に替える必
要がある。候補冷媒であるＨＦＣ系冷媒用の冷凍機油と
しては、合成油（例えば、エステル、エーテル、アルキ
ルベンゼン油等）又はフッ素油が考えられている。2. Description of the Related Art In recent years, HCF has been used to prevent ozone layer depletion.
It has become necessary to replace the C22 air conditioner / refrigerator with an alternative refrigerant. At this time, it is necessary to replace the refrigerant oil and the refrigeration oil at the same time. Synthetic oils (for example, ester, ether, alkylbenzene oil, etc.) or fluoro oils are considered as refrigerating machine oils for HFC type refrigerants which are candidate refrigerants.
【０００３】[0003]
【発明が解決しようとする課題】ところでこの内、合成
油を冷凍機油として使用すると、従来のスニソ油などの
鉱物油よりも極性が強いため、冷凍機油と冷媒以外の残
留不純物（いわゆるコンタミと呼ばれるもので、冷媒回
路内に残留した加工油、組立油、防錆油等の残留油、及
び洗浄剤、金属摩耗粉、スラッジ、重合物等の残留異
物）を溶解し易く、そのためこれらの残留不純物が冷媒
回路内を循環し、これらの残留不純物によって減圧装置
（例えば、キャピラリーチューブ、膨張弁等の細管類）
に詰まりが生じるという不具合が発生する。By the way, when a synthetic oil is used as a refrigerating machine oil, its polarity is stronger than that of a conventional mineral oil such as suniso oil, so that residual impurities other than the refrigerating machine oil and the refrigerant (so-called contaminants) are used. It is easy to dissolve processing oil, assembly oil, residual oil such as rust preventive oil, and cleaning agent, metal abrasion powder, sludge, and polymer residue remaining in the refrigerant circuit. Circulates in the refrigerant circuit, and due to these residual impurities, a decompression device (for example, capillary tubes, capillaries such as expansion valves)
There is a problem that it is clogged.
【０００４】特に減圧装置の中でも、キャピラリーチュ
ーブは細径（内径１．０ｍｍ以下）になればなる程、上
記不具合が発生しやすくなるという問題がある。そこで
キャピラリ内径をある程度大きくすることによって上記
不具合の発生を抑制することも考えられるが、そうする
とキャピラリ長さをそれに応じて長くしなければならな
いので、上記不具合に対応するのは困難とされている。
そしてキャピラリーチューブに詰まりが発生しても、そ
のことは製品として機能しなくなるまで判別できず、詰
まりに対する有効な対策がとれず、最終的にはユーザー
クレームにまで至る。Particularly in the decompression device, there is a problem that the smaller the diameter of the capillary tube (the inner diameter is 1.0 mm or less), the more the above-mentioned problems occur. Therefore, it is conceivable to suppress the occurrence of the above-mentioned problem by increasing the inner diameter of the capillary to some extent, but in that case, the capillary length must be increased accordingly, and it is difficult to cope with the above-mentioned problem.
Even if the capillary tube is clogged, it cannot be determined until it stops functioning as a product, and effective measures against the clogging cannot be taken, which eventually leads to user complaints.
【０００５】この発明は上記従来の欠点を解決するため
になされたものであって、その目的は、冷媒回路内の残
留不純物による減圧装置の詰まりを防止して、製品シス
テムの信頼性を向上させることが可能な冷凍機及び冷凍
機用の減圧装置を提供することにある。The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is to prevent clogging of the pressure reducing device due to residual impurities in the refrigerant circuit, thereby improving the reliability of the product system. It is to provide a refrigerating machine and a decompression device for the refrigerating machine.
【０００６】[0006]
【課題を解決するための手段】そこで請求項１の冷凍機
は、オリフィス４、５と、このオリフィス４、５に連通
する膨張室６、７とから成る減圧機構を、管体１内部に
複数個、直列に配列して成る減圧装置を備えていること
を特徴としている。Therefore, in the refrigerator according to the first aspect, a plurality of depressurizing mechanisms, which are composed of orifices 4 and 5 and expansion chambers 6 and 7 communicating with the orifices 4 and 5, are provided inside the tube body 1. It is characterized in that it is provided with a pressure reducing device which is arranged in series.
【０００７】また請求項２の冷凍機は、冷媒としてＨＦ
Ｃ系冷媒を用いることを特徴としている。The refrigerator according to claim 2 uses HF as the refrigerant.
It is characterized by using a C-based refrigerant.
【０００８】さらに請求項３の冷凍機は、冷凍機油とし
て合成油又はフッ素油を用いることを特徴としている。Further, the refrigerator of claim 3 is characterized in that synthetic oil or fluorine oil is used as the refrigerator oil.
【０００９】請求項４の冷凍機用の減圧装置はオリフィ
ス４、５と、このオリフィス４、５に連通する膨張室
６、７とから成る減圧機構を、管体１内部に複数個、直
列に配列して成ることを特徴としている。A decompression device for a refrigerator according to a fourth aspect of the present invention comprises a plurality of decompression mechanisms, which are composed of orifices 4 and 5 and expansion chambers 6 and 7 communicating with the orifices 4 and 5, and are arranged in series in a tubular body 1. It is characterized by being arranged.
【００１０】請求項５の冷凍機又は冷凍機用の減圧装置
は、上記膨張室６は、オリフィス４から下流に向かって
次第に径大となるテーパ部８を備えていることを特徴と
している。The refrigerator or the pressure reducing device for a refrigerator according to claim 5 is characterized in that the expansion chamber 6 is provided with a taper portion 8 having a diameter gradually increasing from the orifice 4 toward the downstream side.
【００１１】請求項６の冷凍機又は冷凍機用の減圧装置
は、上記オリフィス４、５は、管体１に突設した隔壁
２、３に形成されていることを特徴としている。The refrigerator or the pressure reducing device for a refrigerator according to claim 6 is characterized in that the orifices 4 and 5 are formed in the partition walls 2 and 3 projecting from the pipe body 1.
【００１２】請求項７の冷凍機又は冷凍機用の減圧装置
は、上記オリフィス４、５と膨張室６、７とは、管体１
の内径を滑らかに変化させることにより形成されている
ことを特徴としている。In the refrigerator or the pressure reducing device for a refrigerator according to claim 7, the orifices 4 and 5 and the expansion chambers 6 and 7 are the tubular body 1.
It is characterized in that it is formed by smoothly changing the inner diameter of the.
【００１３】[0013]
【作用】請求項１の冷凍機では、冷媒がオリフィス４、
５を通過して減圧された直後、残留不純物は噴流状態と
なり、膨張室６、７内の管体１内壁面に付着・沈着する
ので、減圧装置の詰まりを防止できる。In the refrigerator according to the first aspect, the refrigerant is the orifice 4,
Immediately after passing through 5 and being decompressed, the residual impurities become a jet state and adhere to / deposit on the inner wall surface of the tube body 1 in the expansion chambers 6 and 7, so that clogging of the decompression device can be prevented.
【００１４】上記請求項１の冷凍機は、特に請求項２の
ようにＨＦＣ系冷媒を用いる場合、及び請求項３のよう
に冷凍機油として合成油又はフッ素油を用いる場合に減
圧装置の詰まりを確実に防止できるので好適である。In the refrigerating machine of the above-mentioned claim 1, especially when the HFC type refrigerant is used as in claim 2 and when the synthetic oil or the fluorine oil is used as the refrigerating machine oil as in claim 3, clogging of the pressure reducing device is caused. This is preferable because it can be surely prevented.
【００１５】請求項４の冷凍機用の減圧装置では、冷媒
がオリフィス４、５を通過して減圧された直後、残留不
純物は噴流状態となり、膨張室６、７内の管体１内壁面
に付着・沈着するので、詰まりを防止できる。In the pressure reducing device for a refrigerator according to a fourth aspect, immediately after the refrigerant is decompressed by passing through the orifices 4 and 5, the residual impurities are in a jet state and are formed on the inner wall surface of the tubular body 1 in the expansion chambers 6 and 7. As it adheres and deposits, it can prevent clogging.
【００１６】請求項５の冷凍機又は冷凍機用の減圧装置
では、オリフィス４から下流に向かって次第に径大とな
るテーパ部８を備えているため、急激な膨張作用が抑制
できるので冷媒通過音の低減ができる。In the refrigerating machine or the decompressing device for a refrigerating machine of claim 5, since the taper portion 8 having a diameter gradually increasing from the orifice 4 to the downstream side is provided, a rapid expansion action can be suppressed, so that the refrigerant passing noise can be suppressed. Can be reduced.
【００１７】請求項６及び請求項７のようにすれば、そ
の実施に好適であるが、特に請求項７のように、オリフ
ィス４、５と膨張室６、７とを、管体１の内径を滑らか
に変化させることにより形成すると、その実施が容易で
あることに加えて、急激な膨張作用が抑制できるので冷
媒通過音の低減ができることにもなる。According to Claims 6 and 7, it is suitable for carrying out the invention. Particularly, as in Claim 7, the orifices 4 and 5 and the expansion chambers 6 and 7 are connected to the inner diameter of the tubular body 1. When it is formed by smoothly changing the temperature of the refrigerant, it is easy to carry out the operation, and in addition, since the rapid expansion effect can be suppressed, the refrigerant passing sound can be reduced.
【００１８】[0018]
【実施例】次にこの発明の冷凍機又は冷凍機用の減圧装
置の具体的な実施例について、図面を参照しつつ詳細に
説明する。この実施例においては、冷媒としてＨＦＣ系
冷媒（ＨＦＣ３２、ＨＦＣ１２５、ＨＦＣ１３４ａ）
を、冷凍機油として合成油（例えば、エステル、エーテ
ル、アルキルベンゼン油等）又はフッ素油を用いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of a refrigerator or a pressure reducing device for a refrigerator according to the present invention will be described in detail with reference to the drawings. In this embodiment, HFC type refrigerants (HFC32, HFC125, HFC134a) are used as the refrigerant.
Is used as a refrigerating machine oil such as synthetic oil (for example, ester, ether, alkylbenzene oil) or fluoro oil.
【００１９】図１にこの実施例における減圧装置を示
す。この減圧装置は冷媒回路の凝縮器と蒸発器との間に
介設されているものであって、キャピラリーチューブと
同じ働きをするものである。またこの減圧装置は、冷媒
が双方向に流れることを前提としたものである。図１に
おいて１は断面円形の管体であり、２、３はそれぞれ管
体１に突設した第１隔壁、第２隔壁である。第１隔壁２
及び第２隔壁３には、管体１と同軸に、円形の第１オリ
フィス４及び第２オリフィス５がそれぞれ設けられてい
る。そして上記各オリフィス４、５の下流側には、それ
ぞれ各オリフィス４、５よりも径大な膨張室６、７が連
通、形成されている。第１オリフィス４と第２オリフィ
ス５との間の膨張室６は、図１において第１オリフィス
４から右に向かって次第に径大となる第１テーパー部８
と、第２オリフィス５から左に向かって次第に径大とな
る第２テーパー部９とを備えている。なお上記各オリフ
ィス４、５の直径は、０．３（±０．０５）ｍｍ程度と
するのが好ましいが、特にこれに限定されない。FIG. 1 shows the pressure reducing device in this embodiment. This decompression device is provided between the condenser and the evaporator of the refrigerant circuit and has the same function as the capillary tube. Further, this pressure reducing device is based on the premise that the refrigerant flows in both directions. In FIG. 1, reference numeral 1 denotes a tubular body having a circular cross section, and reference numerals 2 and 3 denote a first partition wall and a second partition wall projecting from the tubular body 1, respectively. First partition 2
A circular first orifice 4 and a circular second orifice 5 are provided in the second partition wall 3 coaxially with the tubular body 1. Further, expansion chambers 6 and 7 having a diameter larger than that of the orifices 4 and 5 are formed in communication with each other on the downstream side of the orifices 4 and 5, respectively. The expansion chamber 6 between the first orifice 4 and the second orifice 5 has a first tapered portion 8 whose diameter gradually increases from the first orifice 4 to the right in FIG.
And a second taper portion 9 whose diameter gradually increases from the second orifice 5 to the left. The diameter of each of the orifices 4 and 5 is preferably about 0.3 (± 0.05) mm, but not limited to this.
【００２０】上記構成の減圧装置では、図１において矢
線で示すように右方向に冷媒が流れる場合には、冷媒が
第１オリフィス４を通過した直後、残留不純物を含んだ
冷媒は噴流状態となる。そして残留不純物Ｇは、膨張室
６内の管体１の内壁面に衝突することにより付着・沈着
する。また第２オリフィス５、膨張室７においても同様
な作用が生じる。この結果、残留不純物Ｇは、細径部で
ある第１及び第２オリフィス４、５には詰まりにくくな
る。従ってＨＣＦＣの代替冷媒対応としてＨＦＣ系冷媒
／合成油又はフッ素油を用いる場合に、残留不純物Ｇに
よる減圧装置の詰まりを防止できるのでその実施に好適
である。In the decompression device having the above structure, when the refrigerant flows rightward as shown by the arrow in FIG. 1, immediately after the refrigerant has passed through the first orifice 4, the refrigerant containing residual impurities is in a jet state. Become. Then, the residual impurities G adhere and deposit by colliding with the inner wall surface of the tubular body 1 in the expansion chamber 6. Further, the same action occurs in the second orifice 5 and the expansion chamber 7. As a result, the residual impurities G are less likely to be clogged in the first and second orifices 4 and 5 which are the small diameter portions. Therefore, when an HFC-based refrigerant / synthetic oil or fluorine oil is used as a substitute refrigerant for HCFC, clogging of the decompression device due to residual impurities G can be prevented, which is suitable for implementation.
【００２１】また膨張室６は、第１オリフィス４から下
流に向かって次第に径大となる第１テーパー部８を備え
ているため、急激な膨張作用が抑制できるので冷媒通過
音の低減ができる。さらにこの減圧装置は、オリフィス
４、５と膨張室６、７とから成る２つの減圧機構を直列
配置して構成しているので、キャピラリーチューブと略
同等の自己制御性を有する。なおこの減圧装置は左右対
称の構造を有しているので、上記と反対方向に冷媒が流
れるようにしても上記と同様の作用が得られるようにな
っており、そのため冷媒循環方向の切換わる装置に適し
ている。Further, since the expansion chamber 6 is provided with the first taper portion 8 whose diameter gradually increases from the first orifice 4 toward the downstream side, the rapid expansion action can be suppressed, and the refrigerant passing noise can be reduced. Further, since this pressure reducing device is configured by arranging two pressure reducing mechanisms including the orifices 4 and 5 and the expansion chambers 6 and 7 in series, it has substantially the same self-controllability as a capillary tube. Since this pressure reducing device has a bilaterally symmetrical structure, even if the refrigerant flows in the direction opposite to the above, the same operation as described above can be obtained, and therefore, the device for switching the refrigerant circulation direction. Suitable for
【００２２】以上の説明のように上記実施例において
は、ＨＣＦＣの代替冷媒対応としてＨＦＣ系冷媒／合成
油又はフッ素油を用いる場合に、残留不純物による減圧
装置の詰まりを防止できるので、製品システムの信頼性
を向上させることができる。また冷媒通過音の低減がで
きるので、運転時の騒音の低減を図ることができる。さ
らにキャピラリーチューブとほぼ同等の自己制御性を有
する。As described above, in the above embodiment, when the HFC type refrigerant / synthetic oil or fluorine oil is used as a substitute refrigerant for HCFC, clogging of the decompression device due to residual impurities can be prevented, so that the product system The reliability can be improved. Further, since the refrigerant passing noise can be reduced, the noise during operation can be reduced. Furthermore, it has almost the same self-controllability as a capillary tube.
【００２３】以上にこの発明の冷凍機及び冷凍機用の減
圧装置の具体的実施例について説明したが、この発明は
上記実施例に限定されるものではなく、この発明の範囲
内において種々変更して実施することが可能である。例
えば上記実施例においては、管体１にオリフィス４、５
と膨張室６とから成る減圧機構が２つ設けられている
が、各減圧機構を３つ以上設けてもよい。また冷媒が左
方向にだけ流れることを前提として、図２（ａ）に示す
ように各オリフィス４、５から左に向かって次第に径大
となる第１及び第２テーパー部７、８を設けたものや、
冷媒が右方向にだけ流れることを前提として、図２
（ｂ）のように各オリフィス４、５から右に向かって次
第に径大となる第１及び第２テーパー部７、８を設けた
ものを用いてもよく、あるいは図２（ｃ）のように第１
オリフィス４から左に向かって次第に径大となる第１テ
ーパー部７と第２オリフィス５から右に向かって次第に
径大となる第２テーパー部８を設けたものでもよい。The specific embodiments of the refrigerator and the decompression device for the refrigerator of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. It is possible to carry out. For example, in the above embodiment, the orifices 4, 5 are provided in the tubular body 1.
Although two depressurizing mechanisms including the expansion chamber 6 and the depressurizing chamber 6 are provided, three or more depressurizing mechanisms may be provided. Further, assuming that the refrigerant flows only to the left, first and second taper portions 7 and 8 having a diameter gradually increasing from each orifice 4 and 5 to the left are provided as shown in FIG. Things
Assuming that the refrigerant flows only to the right,
As shown in FIG. 2 (b), the orifices 4 and 5 provided with the first and second tapered portions 7 and 8 gradually increasing in diameter to the right may be used, or as shown in FIG. 2 (c). First
It is also possible to provide a first taper portion 7 that gradually increases in diameter from the orifice 4 to the left and a second taper portion 8 that gradually increases in diameter from the second orifice 5 to the right.
【００２４】さらに第１及び第２オリフィス４、５と膨
張室６、７とは、図３に示すように管体１の内径を滑ら
かに変化させることにより形成してもよい。この場合に
は一定の径の管を塑性加工により製作することが可能で
あるので実施が容易であると共に、冷媒の急激な膨張作
用が抑制できるので運転時の騒音の低減を図ることがで
きる。また図４に示すように、単位長さを有するパイプ
状部材の中央部のみを拡管し、この拡管部材を複数個だ
け準備してこれらを相互に連設すると共に、ろう付等に
よって接続し、上記拡管部を膨張室６、７、その両端部
を第１及び第２オリフィス４、５としてもよい。Further, the first and second orifices 4 and 5 and the expansion chambers 6 and 7 may be formed by smoothly changing the inner diameter of the tube body 1 as shown in FIG. In this case, since it is possible to manufacture a pipe having a constant diameter by plastic working, it is easy to carry out, and the rapid expansion action of the refrigerant can be suppressed, so that noise during operation can be reduced. Further, as shown in FIG. 4, only the central portion of the pipe-shaped member having a unit length is expanded, and only a plurality of the expanded members are prepared and connected to each other, and connected by brazing or the like. The expanded portion may be the expansion chambers 6 and 7, and both ends thereof may be the first and second orifices 4 and 5.
【００２５】[0025]
【発明の効果】請求項１の冷凍機では、残留不純物によ
る減圧装置の詰まりを防止できるので、製品システムの
信頼性を向上させることができる。In the refrigerator according to the first aspect of the present invention, it is possible to prevent clogging of the decompression device due to residual impurities, so that the reliability of the product system can be improved.
【００２６】上記請求項１の冷凍機は、特に請求項２の
ようにＨＦＣ系冷媒を用いる場合、及び請求項３のよう
に冷凍機油として合成油又はフッ素油を用いる場合に減
圧装置の詰まりを確実に防止できるので、製品システム
の信頼性を向上させることができる。In the refrigerating machine of the first aspect, the clogging of the pressure reducing device is caused especially when the HFC type refrigerant is used as in the second aspect and the synthetic oil or the fluorine oil is used as the refrigerating machine oil in the third aspect. Since it can be surely prevented, the reliability of the product system can be improved.
【００２７】請求項４の冷凍機用の減圧装置では、残留
不純物による詰まりを防止できるので、信頼性を向上さ
せることができる。In the pressure reducing device for the refrigerator according to the fourth aspect, clogging due to residual impurities can be prevented, so that reliability can be improved.
【００２８】請求項５の冷凍機又は冷凍機用の減圧装置
では、冷媒通過音の低減ができるので運転時の騒音の低
減を図ることができる。In the refrigerating machine or the pressure reducing device for a refrigerating machine of claim 5, the refrigerant passing noise can be reduced, so that the noise during operation can be reduced.
【００２９】請求項６及び請求項７のようにすれば、そ
の実施に好適である。特に請求項７のように、オリフィ
スと膨張室とは、管体の内径を滑らかに変化させること
により形成すると、その実施が容易であることに加え
て、冷媒通過音の低減ができるので運転時の騒音の低減
を図ることができる。According to claims 6 and 7, it is suitable for the implementation. In particular, when the orifice and the expansion chamber are formed by smoothly changing the inner diameter of the pipe as in claim 7, it is easy to carry out, and the refrigerant passing noise can be reduced. It is possible to reduce the noise.
【図１】この発明の冷凍機用の減圧装置の第１実施例を
示す図で、（ａ）は縦断面図、（ｂ）は側面図である。FIG. 1 is a diagram showing a first embodiment of a decompression device for a refrigerator of the present invention, (a) is a vertical sectional view and (b) is a side view.
【図２】この発明の減圧装置の第２実施例の縦断面図で
ある。FIG. 2 is a vertical sectional view of a second embodiment of the decompression device of the present invention.
【図３】この発明の減圧装置の第３実施例の縦断面図で
ある。FIG. 3 is a vertical sectional view of a third embodiment of the decompression device of the present invention.
【図４】この発明の減圧装置の第４実施例の縦断面図で
ある。FIG. 4 is a vertical cross-sectional view of a fourth embodiment of the pressure reducing device of the present invention.
１ 管体 ２ 第１隔壁 ３ 第２隔壁 ４ 第１オリフィス ５ 第２オリフィス ６ 膨張室 ７ 膨張室 ８ 第１テーパー部 ９ 第２テーパー部 DESCRIPTION OF SYMBOLS 1 Tubular body 2 1st partition wall 3 2nd partition wall 4 1st orifice 5 2nd orifice 6 Expansion chamber 7 Expansion chamber 8 1st taper part 9 2nd taper part
Claims (7)
ィス（４）（５）に連通する膨張室（６）（７）とから
成る減圧機構を、管体（１）内部に複数個、直列に配列
して成る減圧装置を備えていることを特徴とする冷凍
機。1. A plurality of pressure reducing mechanisms, each of which includes an orifice (4) (5) and an expansion chamber (6) (7) communicating with the orifice (4) (5), are provided in a tubular body (1). A refrigerator comprising a decompression device arranged in series.
特徴とする請求項１の冷凍機。2. The refrigerator according to claim 1, wherein an HFC type refrigerant is used as the refrigerant.
いることを特徴とする請求項２の冷凍機。3. The refrigerator according to claim 2, wherein synthetic oil or fluorine oil is used as the refrigerator oil.
ィス（４）（５）に連通する膨張室（６）（７）とから
成る減圧機構を、管体（１）内部に複数個、直列に配列
して成ることを特徴とする冷凍機用の減圧装置。4. A plurality of pressure reducing mechanisms, each of which includes an orifice (4) (5) and an expansion chamber (6) (7) communicating with the orifice (4) (5), are provided inside the tubular body (1). A decompression device for a refrigerator characterized by being arranged in series.
から下流に向かって次第に径大となるテーパ部（８）を
備えていることを特徴とする請求項１の冷凍機又は請求
項４の冷凍機用の減圧装置。5. The expansion chamber (6) has an orifice (4).
The pressure reducing device for a refrigerator according to claim 1 or claim 4, further comprising a taper portion (8) having a diameter gradually increasing from the downstream side to the downstream side.
（１）に突設した隔壁（２）（３）に形成されているこ
とを特徴とする請求項１の冷凍機又は請求項４の冷凍機
用の減圧装置。6. The refrigerator according to claim 1, wherein the orifices (4) (5) are formed in partition walls (2) (3) projecting from the pipe body (1). Decompression device for refrigerator of 4.
（６）（７）とは、管体（１）の内径を滑らかに変化さ
せることにより形成されていることを特徴とする請求項
１の冷凍機又は請求項４の冷凍機用の減圧装置。7. The orifices (4) (5) and the expansion chambers (6) (7) are formed by smoothly changing the inner diameter of the tubular body (1). The decompression device for the refrigerator according to claim 1 or the refrigerator according to claim 4.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7083070A JPH08240360A (en) | 1995-03-02 | 1995-03-02 | Freezer and pressure reducing device for freezer |
| PCT/JP1996/000474 WO1996027107A1 (en) | 1995-03-02 | 1996-02-29 | Refrigerating machine and decompression device for the same |
| AU48431/96A AU4843196A (en) | 1995-03-02 | 1996-02-29 | Refrigerating machine and decompression device for the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7083070A JPH08240360A (en) | 1995-03-02 | 1995-03-02 | Freezer and pressure reducing device for freezer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08240360A true JPH08240360A (en) | 1996-09-17 |
Family
ID=13791928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7083070A Pending JPH08240360A (en) | 1995-03-02 | 1995-03-02 | Freezer and pressure reducing device for freezer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH08240360A (en) |
| AU (1) | AU4843196A (en) |
| WO (1) | WO1996027107A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056946A (en) * | 2001-08-20 | 2003-02-26 | Daikin Ind Ltd | Air conditioner, dehumidifier and choking mechanism |
| JP2011038733A (en) * | 2009-08-17 | 2011-02-24 | Entekku:Kk | Air conditioner |
| WO2016181557A1 (en) * | 2015-05-14 | 2016-11-17 | 三菱電機株式会社 | Refrigeration cycle device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3742853B2 (en) | 1999-05-12 | 2006-02-08 | ダイキン工業株式会社 | Electric needle valve for refrigeration circuit and refrigeration apparatus provided with the same |
| CN103629869B (en) * | 2012-08-23 | 2016-04-20 | 珠海格力电器股份有限公司 | Flow regulating device of pipeline, air conditioner pipeline system comprising same and air conditioner |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5792673A (en) * | 1980-11-29 | 1982-06-09 | Tokyo Shibaura Electric Co | Choke apparatus for refrigerating machine |
| JPS5811681U (en) * | 1981-07-15 | 1983-01-25 | 株式会社東芝 | Squeezing device |
| JPS5811683U (en) * | 1981-07-15 | 1983-01-25 | 株式会社東芝 | Squeezing device |
| JPS5811682U (en) * | 1981-07-15 | 1983-01-25 | 株式会社東芝 | Squeezing device |
| JPS58104477A (en) * | 1981-12-16 | 1983-06-21 | 株式会社東芝 | Separation type air conditioner |
| JPS58104478A (en) * | 1981-12-16 | 1983-06-21 | 株式会社東芝 | Decompression mechanism of refrigeration cycle |
| JPS5891678U (en) * | 1981-12-16 | 1983-06-21 | 株式会社東芝 | Refrigeration cycle pressure reduction mechanism |
| JPS5891677U (en) * | 1981-12-16 | 1983-06-21 | 株式会社東芝 | Refrigeration cycle pressure reduction mechanism |
| JPS58104479A (en) * | 1981-12-16 | 1983-06-21 | 株式会社東芝 | Air conditioner |
-
1995
- 1995-03-02 JP JP7083070A patent/JPH08240360A/en active Pending
-
1996
- 1996-02-29 AU AU48431/96A patent/AU4843196A/en not_active Abandoned
- 1996-02-29 WO PCT/JP1996/000474 patent/WO1996027107A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056946A (en) * | 2001-08-20 | 2003-02-26 | Daikin Ind Ltd | Air conditioner, dehumidifier and choking mechanism |
| JP4608828B2 (en) * | 2001-08-20 | 2011-01-12 | ダイキン工業株式会社 | Air conditioner, dehumidifier, and throttle mechanism |
| JP2011038733A (en) * | 2009-08-17 | 2011-02-24 | Entekku:Kk | Air conditioner |
| WO2016181557A1 (en) * | 2015-05-14 | 2016-11-17 | 三菱電機株式会社 | Refrigeration cycle device |
| JPWO2016181557A1 (en) * | 2015-05-14 | 2017-12-28 | 三菱電機株式会社 | Refrigeration cycle equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4843196A (en) | 1996-09-18 |
| WO1996027107A1 (en) | 1996-09-06 |
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