JPH0526039B2 - - Google Patents
Info
- Publication number
- JPH0526039B2 JPH0526039B2 JP60014175A JP1417585A JPH0526039B2 JP H0526039 B2 JPH0526039 B2 JP H0526039B2 JP 60014175 A JP60014175 A JP 60014175A JP 1417585 A JP1417585 A JP 1417585A JP H0526039 B2 JPH0526039 B2 JP H0526039B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- oil separator
- demister
- main casing
- discharge
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は冷凍空調用スクリユー圧縮機の圧縮部
とオイルセパレータとを一体にしてなる冷凍空調
用スクリユー圧縮機に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a screw compressor for refrigeration and air conditioning that integrates a compression section and an oil separator.
本発明に最も近い従来技術の冷凍空調用スクリ
ユー圧縮機を第１図に示す。第１図に示すよう
に、吸入口１より吸入された低圧冷媒ガスは、モ
ータ２を通過冷却し、ロータ３に吸入される。吸
入された低圧冷媒ガスは、ロータ３およびメイン
ケーシング４によつて形成される空間の体積変化
により圧縮されて高圧冷媒ガスとなる。この際、
ロータ３の潤滑および冷却のため、メインケーシ
ング４内に多量の油を噴射する。したがつて高圧
冷媒ガスの中には多量の油が含まれる。この油を
回収するため、メインケーシング４と一体にオイ
ルセパレータ５を設け、このオイルセパレータ５
内にデミスタ６を配設し、吐出部９から噴射され
る油を含む高圧の冷媒ガスをデミスタ６により油
と高圧冷媒ガスに分離し、分離された油はオイル
セパレータ５の下部に溜まり、ふたたびロータ３
間へ噴射するサイクル形成し、高圧冷媒ガスは吐
出口７より外部に吐出される。なお、前記のデミ
スタ６は、細いステンレスワイヤ製の網を渦巻状
に巻いたフイルタタイプのものである。
FIG. 1 shows a conventional screw compressor for refrigeration and air conditioning that is closest to the present invention. As shown in FIG. 1, low-pressure refrigerant gas is sucked in through a suction port 1, passes through a motor 2, cools it, and is sucked into a rotor 3. The sucked low-pressure refrigerant gas is compressed by a change in volume of the space formed by the rotor 3 and the main casing 4, and becomes high-pressure refrigerant gas. On this occasion,
A large amount of oil is injected into the main casing 4 to lubricate and cool the rotor 3. Therefore, high pressure refrigerant gas contains a large amount of oil. In order to recover this oil, an oil separator 5 is provided integrally with the main casing 4.
A demister 6 is disposed inside, and the high-pressure refrigerant gas containing oil injected from the discharge part 9 is separated into oil and high-pressure refrigerant gas by the demister 6. The separated oil collects at the bottom of the oil separator 5 and is reused. Rotor 3
The high-pressure refrigerant gas is discharged to the outside from the discharge port 7. The demister 6 is of a filter type in which a thin stainless steel wire mesh is spirally wound.
〔発明が解決しようとする課題〕
ところで、前記の如き従来技術においては、オ
イルセパレータ５の下部に油が溜る構成であるた
め、吐出冷媒ガスがデミスタ６を通過する際、溜
つた油の分だけデミスタ６の有効通過面積が減少
する。このため、オイルセパレータ５の分離効率
が低下し、油の回収が十分に出来ずに、安定した
油サイクルが形成できないという問題がある。[Problems to be Solved by the Invention] Incidentally, in the prior art as described above, since oil is configured to accumulate in the lower part of the oil separator 5, when the discharged refrigerant gas passes through the demister 6, only the amount of accumulated oil is removed. The effective passage area of the demister 6 is reduced. For this reason, there is a problem that the separation efficiency of the oil separator 5 decreases, oil cannot be recovered sufficiently, and a stable oil cycle cannot be formed.
また、冷凍空調用スクリユー圧縮機の場合、オ
イルセパレータ５の下部に溜つた油の状態は、油
に冷媒が溶け込んでいる。この油は圧縮機の吐出
圧力の圧力変動の影響で常に状態が変化し、たと
えば圧力が急激に下がると、油に溶け込んだ冷媒
は沸騰して泡状となる（フオーミング現象）。こ
のようなフオーミング状態の油溜めの近くにデミ
スタ６が配置されている場合には、気化した冷媒
とともに油がデミスタ６内に逆流し、またデミス
タ６内で分離した吐出冷媒ガス中の油は油溜めに
落下せずにデミスタ６内にとどまる。そのため、
吐出冷媒ガスとともに油が吐出口７から外部に排
出され、これによつて油上りの増大を招く。この
ため、減少分だけ大きいオイルセパレータを設け
る必要があり、コンパクトで高性能なオイルセパ
レータを有する冷凍空調用スクリユー圧縮機が得
られないという問題がある。 Further, in the case of a screw compressor for refrigeration and air conditioning, the state of the oil accumulated in the lower part of the oil separator 5 is such that the refrigerant is dissolved in the oil. This oil constantly changes its state due to fluctuations in the discharge pressure of the compressor. For example, when the pressure suddenly drops, the refrigerant dissolved in the oil boils and becomes foamy (forming phenomenon). If the demister 6 is placed near the oil reservoir in such a forming state, the oil will flow back into the demister 6 together with the vaporized refrigerant, and the oil in the discharged refrigerant gas separated in the demister 6 will be replaced by oil. It stays in the demister 6 without falling into the reservoir. Therefore,
Oil is discharged to the outside from the discharge port 7 together with the discharged refrigerant gas, thereby causing an increase in oil flow. Therefore, it is necessary to provide an oil separator that is larger by the amount of the reduction, and there is a problem that a screw compressor for refrigeration and air conditioning that has a compact and high-performance oil separator cannot be obtained.
本発明の目的は、分離した油によるオイルセパ
レータの分離効率の低下を防ぎ、コンパクトなオ
イルセパレータを有する冷凍空調用スクリユー圧
縮機を提供することにある。 An object of the present invention is to provide a screw compressor for refrigeration and air conditioning that prevents the separation efficiency of an oil separator from decreasing due to separated oil and has a compact oil separator.
本発明は、前記の目的を達成するため、圧縮部
を内蔵するメインケーシング一端部に、該メイン
ケーシングの一端部より外方に突出する圧縮部の
吐出部を含む高圧部を備え、該高圧部を前記メイ
ンケーシングの一端部に支持されたオイルセパレ
ータにより包囲すると共に、そのオイルセパレー
タの内部を、圧縮部の吐出部に近い空間と吐出口
に近い空間とに区分する位置に配設したデミスタ
により区画し、前記メインケーシングの前記圧縮
部の下方部で前記オイルセパレータの内周面の下
面より下方に位置するようにオイルタンクを設
け、該オイルタンクの上方部を、前記オイルセパ
レータの内周面の下面と前記高圧部との間に形成
された間〓を通つて前記オイルセパレータ内の前
記デミスタにより区画された吐出部に近い空間と
連通させたことを特徴とする。
In order to achieve the above object, the present invention includes a high pressure section including a discharge section of the compression section that projects outward from the one end of the main casing, at one end of a main casing that incorporates a compression section; is surrounded by an oil separator supported at one end of the main casing, and by a demister disposed at a position that divides the inside of the oil separator into a space near the discharge part of the compression section and a space near the discharge port. an oil tank is provided below the lower surface of the inner circumferential surface of the oil separator at a lower portion of the compression section of the main casing; The oil separator is characterized in that the oil separator communicates with a space near the discharge part defined by the demister in the oil separator through a gap formed between the lower surface of the oil separator and the high pressure part.
本発明の冷凍空間用スクリユー圧縮機は、前記
の如き構成よりなるので、オイルタンク内の油に
溶け込んだ冷媒ガスが、圧縮部の吐出圧力の変動
により圧力が急激に下がつて沸騰し、泡状になつ
て油とともに上昇しようとしても、オイルタンク
はメインケーシングの圧縮部の下方部でオイルセ
パレータの内周面の下面より下方に位置するよう
に設けられており、かつ、オイルタンクの上方部
を、オイルセパレータの内周面の下面と高圧部と
の間に形成された間〓を通つてオイルセパレータ
内のデミスタにより区画された吐出部に近い空間
と連通させているので、オイルタンク内は常にオ
イルセパレータ内のデミスタより手前側の高圧部
と同一圧力に保持され、泡状になつた油を含む冷
媒ガスがオイルセパレータ内に逆流するのを防止
することができる。また、デミスタによつて冷媒
ガスと分離された油は、オイルセパレータの下面
に溜らずにオイルタンク内に溜るので、デミスタ
の有効通過面積が減少するのを防止することがで
きる。
Since the screw compressor for refrigerated spaces of the present invention has the above-described configuration, the refrigerant gas dissolved in the oil in the oil tank rapidly decreases in pressure due to fluctuations in the discharge pressure of the compression section and boils, causing bubbles to form. Even if the oil tank tries to rise with the oil, the oil tank is located below the compression part of the main casing and below the inner peripheral surface of the oil separator, and the oil tank is located above the oil tank. is communicated with the space near the discharge part divided by the demister in the oil separator through the gap formed between the lower surface of the inner peripheral surface of the oil separator and the high pressure part, so that the inside of the oil tank is The pressure is always maintained at the same level as the high pressure section in front of the demister in the oil separator, and it is possible to prevent refrigerant gas containing foamed oil from flowing back into the oil separator. Moreover, since the oil separated from the refrigerant gas by the demister does not accumulate on the lower surface of the oil separator but instead accumulates in the oil tank, it is possible to prevent the effective passage area of the demister from decreasing.
以下、本発明の一実施例を第２図について説明
する。
An embodiment of the present invention will be described below with reference to FIG.
第２図に示す実施例は、吸入された低圧の冷媒
ガスを圧縮し、その高圧冷媒ガスから分離された
油をふたたびロータ３間へ噴射するサイクルは前
記従来の第１図と同様である。 In the embodiment shown in FIG. 2, the cycle of compressing the sucked low-pressure refrigerant gas and injecting the oil separated from the high-pressure refrigerant gas between the rotors 3 is the same as that of the conventional example shown in FIG. 1.
メインケーシング４内は、吸入口１、モータ
２、ロータ３を内蔵する圧縮部をとり囲む空間よ
りなる低圧部と、メインケーシングの一端部より
外方に突出する圧縮部の吐出部９を含む高圧部と
に区画され、その高圧部はメインケーシングの一
端部に支持されたオイルセパレータ５により包囲
されている。そして、このオイルセパレータ５の
内部は、圧縮部の吐出部９に近い空間と吐出口７
に近い空間とに区分する位置に配設したデミスタ
６により区画されており、さらに、メインケーシ
ング４の前記圧縮部の下方部にオイルセパレータ
５の内周面の下面より下方に位置するようにオイ
ルタンク８が設けられ、そのオイルタンク８の上
方部を、オイルセパレータ５の内周面の下面と前
記高圧部との間に形成された間〓を通つてオイル
セパレータ５内の前記デミスタ６によつて区画さ
れた吐出部９に近い空間と連通させている。 Inside the main casing 4, there is a low-pressure section consisting of a space surrounding a compression section that houses an inlet 1, a motor 2, and a rotor 3, and a high-pressure section that includes a discharge section 9 of the compression section that protrudes outward from one end of the main casing. The high pressure section is surrounded by an oil separator 5 supported at one end of the main casing. The inside of this oil separator 5 includes a space near the discharge part 9 of the compression part and a discharge port 7.
The space is separated by a demister 6 disposed at a position close to the space, and furthermore, the oil A tank 8 is provided, and the upper part of the oil tank 8 is connected to the demister 6 in the oil separator 5 through the gap formed between the lower surface of the inner peripheral surface of the oil separator 5 and the high pressure part. It communicates with a space near the discharge section 9 which is partitioned by the pipe.
つぎに動作について説明する。 Next, the operation will be explained.
圧縮部の吐出部９より吐出した油を含む高圧冷
媒ガスはオイルセパレータ５内に入つてデミスタ
６に当ると、高圧冷媒ガスと油とが分離されて油
のみオイルセパレータ５の下面よりオイルタンク
８内に送られる。また油より分離された高圧冷媒
ガスは吐出口７より外部に排出される。 When the high-pressure refrigerant gas containing oil discharged from the discharge part 9 of the compression part enters the oil separator 5 and hits the demister 6, the high-pressure refrigerant gas and oil are separated, and only oil flows from the bottom surface of the oil separator 5 into the oil tank 8. sent within. Further, the high-pressure refrigerant gas separated from the oil is discharged to the outside from the discharge port 7.
この場合、本発明においては、たとえオイルタ
ンク８内の油に溶け込んだ冷媒ガスが圧縮部の吐
出圧力の圧力変動により圧力が急激に下がり、沸
騰して泡状になり油とともに上昇しようとして
も、デミスタ６はオイルセパレータ５内を圧縮部
の吐出部９に近い空間と吐出口７に近い空間とに
区分する位置に配置され、かつ、オイルタンク８
内は常にオイルセパレータ５内のデミスタ６の手
前側の高圧部と同一圧力を保持されているので、
オイルセパレータ５内に逆流するのを防止するこ
とができる。またデミスタ６によつて冷媒ガスと
分離された油はオイルセパレータ５の下面に溜ま
らずにオイルタンク８内に溜まるので、デミスタ
６の有効通過面積が減少するのを防止することが
できる。 In this case, in the present invention, even if the pressure of the refrigerant gas dissolved in the oil in the oil tank 8 suddenly drops due to pressure fluctuations in the discharge pressure of the compression section, it boils, becomes foamy, and tries to rise together with the oil. The demister 6 is disposed at a position that divides the inside of the oil separator 5 into a space close to the discharge part 9 of the compression section and a space close to the discharge port 7, and
The inside pressure is always maintained at the same pressure as the high pressure part on the front side of the demister 6 inside the oil separator 5.
Backflow into the oil separator 5 can be prevented. Further, since the oil separated from the refrigerant gas by the demister 6 does not accumulate on the lower surface of the oil separator 5 but instead accumulates in the oil tank 8, it is possible to prevent the effective passage area of the demister 6 from decreasing.
以上述べたように、本発明によれば、分離した
油によるデミスタの有効通過面積を減少すること
なく、コンパクトで高性能なオイルセパレータを
有する冷凍空調用スクリユー圧縮機を得ることが
できる。
As described above, according to the present invention, it is possible to obtain a screw compressor for refrigeration and air conditioning that has a compact and high-performance oil separator without reducing the effective passage area of the demister due to separated oil.
第１図は従来技術における冷凍空調用スクリユ
ー圧縮機を示す縦断面図、第２図は本発明の一実
施例であるが冷凍空調用スクリユー圧縮機を示す
縦断面図である。
１…吸入口、２…モータ、３…ロータ、４…メ
インケーシング、５…オイルセパレータ、６…デ
ミスタ、７…吐出口、８…オイルタンク、９…圧
縮部の吐出部。
FIG. 1 is a vertical sectional view showing a conventional screw compressor for refrigeration and air conditioning, and FIG. 2 is a longitudinal sectional view showing a screw compressor for refrigeration and air conditioning, which is an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Suction port, 2... Motor, 3... Rotor, 4... Main casing, 5... Oil separator, 6... Demister, 7... Discharge port, 8... Oil tank, 9... Discharge part of compression part.
Claims (1)
に、該メインケーシングの一端部より外方に突出
する圧縮部の吐出部を含む高圧部を備え、該高圧
部を前記メインケーシングの一端部に支持された
オイルセパレータにより包囲すると共に、そのオ
イルセパレータの内部を、圧縮部の吐出部に近い
空間と吐出口に近い空間とに区分する位置に配設
したデミスタにより区画し、前記メインケーシン
グの前記圧縮部の下方部で前記オイルセパレータ
の内周面の下面より下方に位置するようにオイル
タンクを設け、該オイルタンクの上方部を、前記
オイルセパレータの内周面の下面と前記高圧部と
の間に形成された間〓を通つて前記オイルセパレ
ータ内の前記デミスタにより区画された吐出部に
近い空間と連通させたことを特徴とする冷凍空調
用スクリユー圧縮機。1 A high pressure part including a discharge part of the compression part that protrudes outward from one end of the main casing is provided at one end of the main casing containing the compression part, and the high pressure part is supported by the one end of the main casing. The compression section of the main casing is surrounded by an oil separator, and the interior of the oil separator is divided into a space near the discharge section of the compression section and a space near the discharge port. An oil tank is provided below the lower surface of the inner circumferential surface of the oil separator, and the upper portion of the oil tank is located between the lower surface of the inner circumferential surface of the oil separator and the high pressure section. A screw compressor for refrigeration and air conditioning, characterized in that the screw compressor for refrigeration and air conditioning is communicated with a space near a discharge section partitioned by the demister in the oil separator through the formed gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1417585A JPS60184984A (en) | 1985-01-30 | 1985-01-30 | screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1417585A JPS60184984A (en) | 1985-01-30 | 1985-01-30 | screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60184984A JPS60184984A (en) | 1985-09-20 |
| JPH0526039B2 true JPH0526039B2 (en) | 1993-04-14 |
Family
ID=11853805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1417585A Granted JPS60184984A (en) | 1985-01-30 | 1985-01-30 | screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60184984A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008232134A (en) * | 2007-02-20 | 2008-10-02 | Calsonic Kansei Corp | Electric compressor |
| CN102748284A (en) * | 2012-04-11 | 2012-10-24 | 无锡市制冷设备厂有限责任公司 | Screw compressor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4530767Y1 (en) * | 1967-09-07 | 1970-11-25 | ||
| JPS572702Y2 (en) * | 1977-07-07 | 1982-01-18 | ||
| JPS5434923A (en) * | 1977-08-23 | 1979-03-14 | Citizen Watch Co Ltd | Intermittently started flying printer |
-
1985
- 1985-01-30 JP JP1417585A patent/JPS60184984A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60184984A (en) | 1985-09-20 |
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