JPH0451210Y2 - - Google Patents
Info
- Publication number
- JPH0451210Y2 JPH0451210Y2 JP1987107550U JP10755087U JPH0451210Y2 JP H0451210 Y2 JPH0451210 Y2 JP H0451210Y2 JP 1987107550 U JP1987107550 U JP 1987107550U JP 10755087 U JP10755087 U JP 10755087U JP H0451210 Y2 JPH0451210 Y2 JP H0451210Y2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heat
- rotating shaft
- refrigerant reservoir
- reservoir
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 40
- 238000007789 sealing Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 2
- 230000020169 heat generation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Sealing Devices (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、例えばカーエアコン用コンプレツサ
などの機体の回転軸部を軸封する軸封装置の構造
の改良に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in the structure of a shaft sealing device that seals the rotating shaft of a machine body such as a compressor for a car air conditioner.
［従来の技術］
従来、この種のカーエアコン用コンプレツサな
どの軸封装置においては、第２図に例示するよう
に、機体ハウジング１のシールボツクス２内に挿
通された回転軸３を軸封するにあたり、前記シー
ルボツクス２内に、外側ケーシング４、内環５及
び内側ケーシング６で挟持されたゴムあるいは合
成樹脂等からなるリツプシール７を前記回転軸３
の軸周に摺接させて軸封してなる構成を有するも
のがある。[Prior Art] Conventionally, in a shaft sealing device of this type of car air conditioner compressor, etc., as illustrated in FIG. 2, a rotating shaft 3 inserted into a seal box 2 of a body housing 1 is sealed. At this time, a lip seal 7 made of rubber or synthetic resin, which is sandwiched between the outer casing 4, the inner ring 5, and the inner casing 6, is placed inside the seal box 2 and attached to the rotating shaft 3.
Some have a structure in which the shaft is sealed in sliding contact with the circumference of the shaft.
［考案が解決しようとする問題点］
しかしながら、このような従来構造の軸封装置
では、特にリツプシール７といつたシール部材に
よるシール摺動面で発生する熱により、シール部
材が劣化したりなどして故障し、耐久性が悪く、
密封機能を損ない易いばかりか、高PV値条件に
適用させることが不可能であるといつた問題があ
つた。[Problems to be solved by the invention] However, in the shaft sealing device of such a conventional structure, the sealing member may deteriorate due to the heat generated on the seal sliding surface by the sealing member, especially the lip seal 7. It breaks down and has poor durability.
There were problems in that not only did it easily impair the sealing function, but it was also impossible to apply it to high PV value conditions.
［考案の目的］
本考案は、上記の事情のもとになされたもの
で、その目的とするところは、密封機能の耐久性
の向上を図るとともに、高PV値条件に適用させ
ることができるようにした軸封装置を提供するこ
とにある。[Purpose of the invention] The present invention was made under the above circumstances, and its purpose is to improve the durability of the sealing function and to make it applicable to high PV value conditions. The object of the present invention is to provide a shaft sealing device that has the following features.
［問題点を解決するための手段］
上記した問題点を解決するために、本考案は、
回転軸の内部に、シール部材との摺接位置の内部
を一端とする中空部が形成され、この中空部の軸
方向両端に径方向に拡張した冷媒溜まりを有し、
この冷媒溜まりの容積を満たす量の冷媒液を封入
したものである。[Means for solving the problems] In order to solve the above problems, the present invention has the following features:
A hollow portion is formed inside the rotating shaft, one end of which is inside the position of sliding contact with the seal member, and a refrigerant reservoir expanded in the radial direction is provided at both axial ends of the hollow portion,
A refrigerant liquid is sealed in an amount to fill the volume of this refrigerant reservoir.
［作用］
すなわち、本考案は、上記の構成とすることに
よつて、回転軸の内部に封入された冷媒でシール
摺動面を常に冷却することができる。すなわち回
転軸の中空部の一端に形成された冷媒溜まり内の
冷媒は、その外周側に存在するシール部材との摺
接部で発生した摩擦熱を潜熱として吸収しながら
盛んに気化し、この気化冷媒が対流によつて中空
部内を前記摺接部から離れた他端側へ移動して凝
縮され、その際に前記潜熱を放出する。液化した
冷媒は、前記中空部の他端に形成された冷媒溜ま
りに遠心力によつて一旦蓄えられ、しかもこの冷
媒溜まり部分では回転軸が薄肉になつているの
で、冷媒は十分に放熱されてからオーバーフロー
し、前記中空部のテーパ状の内壁面を前記摺接部
側の冷媒溜まりへ還流される。[Function] That is, with the above configuration, the present invention can constantly cool the seal sliding surface with the refrigerant sealed inside the rotating shaft. In other words, the refrigerant in the refrigerant reservoir formed at one end of the hollow part of the rotating shaft actively vaporizes while absorbing the frictional heat generated at the sliding contact with the seal member on the outer circumferential side as latent heat. The refrigerant moves within the hollow part to the other end side away from the sliding contact part by convection and is condensed, releasing the latent heat at that time. The liquefied refrigerant is temporarily stored by centrifugal force in a refrigerant reservoir formed at the other end of the hollow portion, and since the rotating shaft is thin in this refrigerant reservoir, heat is sufficiently dissipated from the refrigerant. The refrigerant overflows through the tapered inner wall surface of the hollow portion and is returned to the refrigerant reservoir on the sliding contact portion side.
［実施例］
以下、本考案を第１図に示す一実施例を参照し
ながら説明する。なお、本考案に係る図示の実施
例において、第２図に示す従来構造の軸封装置と
構成が重複する部分は同一符号を用い、その説明
は省略する。[Example] The present invention will be described below with reference to an example shown in FIG. In the illustrated embodiment of the present invention, the same reference numerals are used for the parts having the same structure as those of the shaft sealing device of the conventional structure shown in FIG. 2, and the explanation thereof will be omitted.
すなわち、本考案は、第１図に示すように、リ
ツプシール７との摺接部からその外部の位置にか
けて、回転軸３の内部を中空にし、この中空部３
１に冷媒８を封入してなるもので、前記中空部３
１は、リツプシール７の摺接部側に向け拡大する
テーパ形状を有するとともに、その両端部側に冷
媒溜まり３２，３３を形成してなる構成となつて
いる。 That is, as shown in FIG.
1 is filled with a refrigerant 8, and the hollow part 3
1 has a tapered shape that widens toward the sliding contact side of the lip seal 7, and has refrigerant reservoirs 32 and 33 formed at both ends thereof.
しかして、上記した構成を有する本考案の作用
を説明すると、摺動面直下の高温部側の冷媒溜ま
り３２に溜られていた冷媒８は、運転中の摺動発
熱によつて発生する熱流束Ａを吸熱して気化８１
し、図面左側の低温部へと移動する。そして、こ
の気化冷媒８１は、その最低温部で放熱Ｂされて
液化し、低温部側の冷媒溜まり３３に溜られ、こ
こでオーバーフローした液化冷媒８２は、テーパ
形状の中空部３１の内周壁面に沿つて遠心力によ
り図面右側の高温部側の冷媒溜まり３２へと還流
される。また、このような熱サイクルの過程で、
凝縮・液化された冷媒８２が貯留される冷媒溜ま
り３３の外周側は、回転軸３が径方向に薄肉とな
つているので、冷媒８２は冷媒溜まり３３内で対
流しながら十分に放熱される。 Therefore, to explain the operation of the present invention having the above-described configuration, the refrigerant 8 accumulated in the refrigerant reservoir 32 on the high temperature side directly below the sliding surface is absorbed by the heat flux generated by sliding heat generation during operation. Vaporize A by absorbing heat 81
Then, move to the low temperature area on the left side of the drawing. Then, this vaporized refrigerant 81 radiates heat B at the lowest temperature part and becomes liquefied, and is collected in the refrigerant reservoir 33 on the low temperature part side. The centrifugal force causes the refrigerant to flow back to the refrigerant reservoir 32 on the high temperature section side on the right side of the drawing. In addition, in the process of such a thermal cycle,
On the outer peripheral side of the refrigerant reservoir 33 in which the condensed and liquefied refrigerant 82 is stored, the rotary shaft 3 is thin in the radial direction, so that the refrigerant 82 convects within the refrigerant reservoir 33 and sufficiently radiates heat.
なお、上記した実施例においては、リツプ型シ
ールを例にして説明したが、オイルシール、グラ
ンドパツキン等にも応用することが可能である。 In the above-mentioned embodiments, a lip type seal was used as an example, but the present invention can also be applied to oil seals, gland packings, etc.
さらに、回転軸３の中空部３１に封入される冷
媒８の種類は、運転中の摺動発熱によつて発生す
る熱流束Ａ部と放熱Ｂ部の温度で決定され、ま
た、その封入量も冷媒溜まり３２，３３の容積に
より任意に決定されるものである。 Furthermore, the type of refrigerant 8 sealed in the hollow part 31 of the rotating shaft 3 is determined by the temperature of the heat flux part A and the heat radiation part B generated by sliding heat generation during operation, and the amount of refrigerant sealed is also determined by the temperature of the heat flux part A and the heat radiation part B, which are generated by sliding heat generation during operation. It is arbitrarily determined based on the volumes of the refrigerant reservoirs 32 and 33.
その他、本考案は、本考案の要旨を変えない範
囲で種々変更実施可能なことは勿論である。 In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.
［考案の効果］
以上の説明から明らかなように、本考案によれ
ば、回転軸の中空部の一端の冷媒溜まりにおける
冷媒が、シール部材との摺接部からの発熱を吸収
して盛んに気化し、前記中空部内をその他端側へ
移動して放熱しながら液化し、前記他端側の冷媒
溜まりに蓄えられている過程で、回転軸が薄肉に
なつているこの冷媒溜まりで十分に放熱されてか
ら、前記中空部のテーパ状の内壁面を前記摺接部
側の冷媒溜まりへ還流されるので、前記摺接部に
対する優れた冷却効果を得ることができる。この
ため、摺動発熱に起因するシール部材の故障を確
実に防止することができ、これによつて、密封機
能の耐久性の向上を図ることができるとともに、
高PV値条件に適用させることができるというす
ぐれた効果を奏するものである。[Effect of the invention] As is clear from the above explanation, according to the invention, the refrigerant in the refrigerant reservoir at one end of the hollow part of the rotating shaft absorbs heat generated from the sliding contact with the sealing member and actively increases. The refrigerant evaporates, moves to the other end in the hollow part, liquefies while dissipating heat, and is stored in the refrigerant reservoir at the other end. In this process, the refrigerant reservoir, whose rotating shaft has a thin wall, sufficiently dissipates heat. After that, the refrigerant is circulated through the tapered inner wall surface of the hollow portion to the refrigerant reservoir on the sliding contact portion side, so that an excellent cooling effect on the sliding contact portion can be obtained. Therefore, it is possible to reliably prevent failure of the sealing member due to sliding heat generation, thereby improving the durability of the sealing function, and
It has an excellent effect in that it can be applied to high PV value conditions.
第１図は本考案に係る軸封装置の一実施例を示
す要部概略的断面図、第２図は従来の軸封装置の
要部概略的断面図である。
１……ハウジング、２……シールボツクス、３
……回転軸、３１……中空部、３２，３３……冷
媒溜まり、７……リツプシール、８……冷媒。
FIG. 1 is a schematic cross-sectional view of a main part of an embodiment of a shaft sealing device according to the present invention, and FIG. 2 is a schematic cross-sectional view of a main part of a conventional shaft sealing device. 1...Housing, 2...Seal box, 3
... Rotating shaft, 31 ... Hollow part, 32, 33 ... Refrigerant reservoir, 7 ... Lip seal, 8 ... Refrigerant.
Claims (1)
部を一端とする中空部が形成され、この中空部の
軸方向両端に径方向に拡張した冷媒溜まりを有
し、この冷媒溜まりの容積を満たす量の冷媒液を
封入してなることを特徴とする軸封装置。 A hollow portion is formed inside the rotating shaft, with one end located inside the position of sliding contact with the seal member, and a refrigerant reservoir that expands in the radial direction is provided at both axial ends of this hollow portion, and the volume of this refrigerant reservoir is A shaft sealing device characterized by being sealed with a refrigerant liquid in an amount that satisfies the demand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987107550U JPH0451210Y2 (en) | 1987-07-15 | 1987-07-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987107550U JPH0451210Y2 (en) | 1987-07-15 | 1987-07-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6415822U JPS6415822U (en) | 1989-01-26 |
| JPH0451210Y2 true JPH0451210Y2 (en) | 1992-12-02 |
Family
ID=31342066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987107550U Expired JPH0451210Y2 (en) | 1987-07-15 | 1987-07-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0451210Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT3682U1 (en) * | 1999-01-13 | 2000-06-26 | Steyr Daimler Puch Ag | ARRANGEMENT WITH CONCENTRICALLY ARRANGED AND RELATIVELY ROTATABLE COMPONENTS AND USE OF THIS ARRANGEMENT IN A TIRE INFLATION SYSTEM |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5795593A (en) * | 1980-12-05 | 1982-06-14 | Hitachi Ltd | Heating and cooling device for interior of shaft |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5388640U (en) * | 1976-12-22 | 1978-07-20 |
-
1987
- 1987-07-15 JP JP1987107550U patent/JPH0451210Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5795593A (en) * | 1980-12-05 | 1982-06-14 | Hitachi Ltd | Heating and cooling device for interior of shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6415822U (en) | 1989-01-26 |
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