JPS6245095Y2 - - Google Patents
Info
- Publication number
- JPS6245095Y2 JPS6245095Y2 JP13079482U JP13079482U JPS6245095Y2 JP S6245095 Y2 JPS6245095 Y2 JP S6245095Y2 JP 13079482 U JP13079482 U JP 13079482U JP 13079482 U JP13079482 U JP 13079482U JP S6245095 Y2 JPS6245095 Y2 JP S6245095Y2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- crank chamber
- oil
- check valve
- motor
- 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
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Compressor (AREA)
Description
【考案の詳細な説明】 本考案は圧縮機に関する。[Detailed explanation of the idea] The present invention relates to a compressor.
例えば、従来の半密閉冷凍圧縮機は、第１図縦
断面図に示すように、吸入口１より冷媒ガスを吸
入し、モータ２を冷却し、吸入通路３を経てピス
トン４で冷媒ガスを圧縮し、吐出口より圧縮冷媒
ガスを吐出するのであるが、この種の圧縮機の各
摺動部の潤滑は、クランク室５に溜められている
油をスクレーパ６で跳ねかけることによつて行な
われ、油はピストン４とシリンダ７のすきま、均
圧通路８、軸受部９から一部吐出し、冷媒ガスに
混つて排出され、冷媒回路を巡つて吸入口１から
冷媒ガスとゝもにモータ室１０に戻り、モータ室
１０で油は一部分離され、底に溜つた油はチエツ
ク弁１１を通りクランク室５に戻るようになつて
いる。 For example, a conventional semi-hermetic refrigeration compressor, as shown in the vertical cross-sectional view of FIG. Compressed refrigerant gas is discharged from the discharge port, and each sliding part of this type of compressor is lubricated by splashing oil stored in the crank chamber 5 with a scraper 6. A portion of the oil is discharged from the gap between the piston 4 and the cylinder 7, the pressure equalizing passage 8, and the bearing part 9, and is discharged together with the refrigerant gas.The oil travels around the refrigerant circuit and flows from the suction port 1 to the motor chamber. Returning to 10, a portion of the oil is separated in the motor chamber 10, and the oil collected at the bottom returns to the crank chamber 5 through the check valve 11.
その際、チエツク弁１１はモータ室１０からク
ランク室５への油の流れのみを許容し、クランク
室５からモータ室１０への流れを禁止するような
構造に造られる必要があるが、実際には、弁の閉
止不良により冷凍圧縮機停止時にクランク室５の
油がモータ室１０へ流れ出てしまうことがあり、
一旦このようにクランク室５からモータ室１０へ
油が流れると、起動時クランク室５の油面低下に
基因してスクレーパ６の各摺動部への油の跳ねか
け不足による焼付事故が起こり、またかりに焼付
事故が起きなくても、クランクケース油面管理用
のサイトグラスの油面が所定レベル以下に低下
し、給油の要求現象が起きる等の不具合がある。 In this case, the check valve 11 needs to be constructed in such a way that it only allows oil to flow from the motor chamber 10 to the crank chamber 5, and prohibits the oil from flowing from the crank chamber 5 to the motor chamber 10. In this case, oil in the crank chamber 5 may flow out into the motor chamber 10 when the refrigeration compressor is stopped due to a valve closing failure.
Once the oil flows from the crank chamber 5 to the motor chamber 10 in this way, a seizing accident occurs due to insufficient oil splashing on each sliding part of the scraper 6 due to the drop in the oil level in the crank chamber 5 at the time of startup. Furthermore, even if a seizure does not occur, there are problems such as the oil level in the sight glass for controlling the crankcase oil level dropping below a predetermined level and requiring oil replenishment.
本考案はこのような事情に鑑みて提案されたも
ので、クランク室の油面を所定のレベルに保つて
故障なく円滑な潤滑を行なう圧縮機を提供するこ
とを目的とし、圧縮機構を収容するクランク室と
モータ室がほゞ水平に位置している圧縮機におい
て、モータ室の底面とクランク室の許容最下端油
面位置に連通穴を設け、その連通穴の途中に設け
たチエツク弁室をクランクケースの底蓋を利用し
て閉塞したことを特徴とする。 The present invention was proposed in view of these circumstances, and aims to provide a compressor that maintains the oil level in the crank chamber at a predetermined level and provides smooth lubrication without failure. In a compressor where the crank chamber and motor chamber are located almost horizontally, a communication hole is provided between the bottom of the motor chamber and the lowest allowable oil level position in the crank chamber, and a check valve chamber is provided in the middle of the communication hole. It is characterized by being closed using the bottom cover of the crankcase.
本考案の一実施例を図面について説明すると、
第２図はその縦断面図、第３図は第２図のチエツ
ク弁室付近を示す部分拡大図、第４〜６図はそれ
ぞれ第３図の変形例を示す同じく部分拡大図、第
７図は第４〜６図の弁板を示す平面図である。 An embodiment of the present invention will be explained with reference to the drawings.
Fig. 2 is a vertical sectional view thereof, Fig. 3 is a partially enlarged view showing the vicinity of the check valve chamber in Fig. 2, Figs. 4 to 6 are partially enlarged views showing modifications of Fig. 3, and Fig. 7. 7 is a plan view showing the valve plate of FIGS. 4 to 6. FIG.
まず第２〜３図において、第１図と同一の記号
はそれぞれ同図と同一の部材を示し、モータ室１
０とクランク室５の隔壁２０に明けられた連通路
のモータ室１０側開口部１２ａはモータ室最下端
に明けられ、また、上記連通路のクランク室５側
開口部１２ｄはクランク室５の許容最低油面１３
位置に明けられ、モータ室側開口部１２ａの下方
に明けられた穴は、内部で円錐状に広がつて大径
穴となり、その下開口部はガスケツト２１、クラ
ンクケース底蓋２２よつて閉塞されてチエツク弁
室を形成している。２３はガスケツト２１を介し
てクランクケース底蓋２２をクランク室５の下端
開口に固着する複数のボルトである。 First, in Figures 2 and 3, the same symbols as in Figure 1 indicate the same members as in the same figure, and the motor chamber 1
An opening 12a on the motor chamber 10 side of the communicating passage opened in the partition wall 20 between the crank chamber 5 and the crank chamber 5 is opened at the lowest end of the motor chamber, and an opening 12d on the crank chamber 5 side of the communicating passage is opened in the crank chamber 5. Minimum oil level 13
The hole drilled at the position below the motor chamber side opening 12a expands into a conical shape to become a large diameter hole, and the lower opening is closed by the gasket 21 and the crankcase bottom cover 22. It forms a check valve chamber. A plurality of bolts 23 fix the crankcase bottom cover 22 to the lower end opening of the crank chamber 5 via the gasket 21.
チエツク弁室には、球１４が挿入され、その下
部には連通穴１２ｂが明けられ、連通穴１２ｃを
介してクランク室５に通じ、チエツク弁室の円錐
部と球１４は精密に仕上げられ弁機能を有し、連
通穴１２ｂは、球１４がクランク室５側に出ない
ような***となつている。 A ball 14 is inserted into the check valve chamber, and a communication hole 12b is formed at its lower part, which communicates with the crank chamber 5 via communication hole 12c. The conical portion of the check valve chamber and the ball 14 are precisely finished and have a valve function, and the communication hole 12b is a small hole which prevents the ball 14 from protruding into the crank chamber 5.
チエツク弁室大径部と球１４のすきまは、クラ
ンク室５圧力がモータ室１０圧力より若干高くな
ると、そこを流れる流体の抵抗により球１４が上
方へ浮き上がり、また、逆の圧力の場合は、モー
タ室１０に溜つた油をクランク室５へ十分流すこ
とができる大きさとなつている。 The gap between the large diameter part of the check valve chamber and the ball 14 is such that when the crank chamber 5 pressure is slightly higher than the motor chamber 10 pressure, the ball 14 floats upward due to the resistance of the fluid flowing there; The size is such that oil accumulated in the motor chamber 10 can flow sufficiently into the crank chamber 5.
このような構造において、チエツク弁室と球１
４により、モータ室１０の圧力がクランク室５の
圧力より高いときは、モータ室に溜つた油はクラ
ンク室５へ流れる。 In such a structure, the check valve chamber and the bulb 1
4, when the pressure in the motor chamber 10 is higher than the pressure in the crank chamber 5, the oil accumulated in the motor chamber flows to the crank chamber 5.
しかしながら、逆にクランク室５の圧力がモー
タ室１０の圧力より高いときは、球１４は浮き上
がつて円錐部に密着するので、クランク室５のガ
ス、油がモータ室１０へ流出することはない。 However, when the pressure in the crank chamber 5 is higher than the pressure in the motor chamber 10, the ball 14 rises and comes into close contact with the conical portion, so that gas and oil in the crank chamber 5 do not leak into the motor chamber 10. do not have.
また、圧縮機が停止中、クランク室油面は連通
管開口部１２ｄ以下に下がることなく、許容最低
油面が確保される。 Further, while the compressor is stopped, the oil level in the crank chamber does not fall below the communication pipe opening 12d, and the minimum allowable oil level is ensured.
このような構造によれば、運転停止中にクラン
ク室油面が許容最低面以下に下らないので、起動
初期の油面低下によるメタル焼付き事故が防止さ
れ、また、油面低下による油の追加補充が不要と
なるので、メンテナンスが軽減され、さらに、関
係部材の点数が減少するとゝもにその加工が容易
となるので、コスト低減が達成される。 With this structure, the oil level in the crank chamber does not fall below the allowable minimum level during shutdown, preventing metal seizing accidents due to a drop in the oil level at the beginning of startup, and also prevents additional oil replenishment due to a drop in the oil level. This eliminates the need for maintenance, and furthermore, the reduced number of related members also facilitates their processing, resulting in cost reduction.
なお、チエツク弁室はそれぞれ第４〜６図に示
すような構造とすることができる。すなわち、
まず、第４図においては、１８は弁板（第７図
参照）であり、１５はストツパで、チエツク弁室
２５に圧入されている。 Note that each of the check valve chambers can have a structure as shown in FIGS. 4 to 6. That is, first, in FIG. 4, 18 is a valve plate (see FIG. 7), and 15 is a stopper, which is press-fitted into the check valve chamber 25.
次に、第５図においては、１９は弁座で、チエ
ツク弁室２５に圧入されている。 Next, in FIG. 5, a valve seat 19 is press-fitted into the check valve chamber 25.
さらに、第６図においては、２６はばねで、弁
板１８を下に押し下げ、２４はスナツプリング
で、弁板１８のストツパになつている。 Furthermore, in FIG. 6, 26 is a spring that pushes down the valve plate 18, and 24 is a snap ring that serves as a stopper for the valve plate 18.
以上のような構造のチエツク弁室によつても上
記実施例と実質的に同一の作用効果を奏すること
ができる。 Even with the check valve chamber having the structure as described above, substantially the same effects as those of the above embodiment can be achieved.
要するに本考案によれば、圧縮機構を収容する
クランク室とモータ室がほゞ水平に位置している
圧縮機において、モータ室の底面とクランク室の
許容最下端油面位置に連通穴を設け、その連通穴
の途中に設けたチエツク弁室をクランクケースの
底蓋を利用して閉塞したことにより、円滑な運転
を確保するコスト低廉な圧縮機を得るから、本考
案は産業上極めて有益なものである。 In short, according to the present invention, in a compressor in which the crank chamber housing the compression mechanism and the motor chamber are located almost horizontally, a communicating hole is provided between the bottom of the motor chamber and the lowest allowable oil level position of the crank chamber, By blocking the check valve chamber provided in the middle of the communication hole using the bottom cover of the crankcase, a low-cost compressor that ensures smooth operation is obtained, so this invention is extremely useful industrially. It is.
第１図は公知の半密閉冷凍圧縮機を示す縦断面
図、第２図は本考案の一実施例を示す縦断面図、
第３図は第２図のチエツク弁を示す部分拡大図、
第４〜６図はそれぞれ第３図の変形を示す部分縦
断面図、第７図は第４〜６図の弁板を示す正面図
である。
１……吸入口、２……モータ、３……吸入通
路、４……ピストン、５……クランク室、６……
スクレーパ、７……シリンダ、８……均圧管、９
……軸受部、１０……モータ室、１２……連通油
路、１２ａ……モータ室側開口部、１２ｂ，１２
ｃ……連通穴、１２ｄ……クランク室側開口部、
１３……許容最低油面、１４……球、１５……ス
トツパ、１８……弁板、１９……弁座、２０……
隔壁、２１……ガスケツト、２２……クランクケ
ース底蓋、２３……ボルト、２４……スナツプリ
ング、２５……チエツク弁室、２６……ばね。
FIG. 1 is a longitudinal sectional view showing a known semi-hermetic refrigeration compressor, FIG. 2 is a longitudinal sectional view showing an embodiment of the present invention,
Figure 3 is a partially enlarged view showing the check valve in Figure 2;
4-6 are partial vertical sectional views showing modifications of the valve plate shown in FIG. 3, and FIG. 7 is a front view showing the valve plate shown in FIGS. 4-6. 1... Suction port, 2... Motor, 3... Suction passage, 4... Piston, 5... Crank chamber, 6...
Scraper, 7...Cylinder, 8...Pressure equalization pipe, 9
... Bearing part, 10 ... Motor chamber, 12 ... Communication oil passage, 12a ... Motor room side opening, 12b, 12
c...Communication hole, 12d...Crank chamber side opening,
13...Minimum allowable oil level, 14...Ball, 15...Stopper, 18...Valve plate, 19...Valve seat, 20...
Partition wall, 21...Gasket, 22...Crankcase bottom cover, 23...Bolt, 24...Snap spring, 25...Check valve chamber, 26...Spring.
Claims (1)
ほゞ水平に位置している圧縮機において、モータ
室の底面とクランク室の許容最下端油面位置に連
通穴を設け、その連通穴の途中に設けたチエツク
弁室をクランクケースの底蓋を利用して閉塞した
ことを特徴とする圧縮機。 In a compressor where the crank chamber housing the compression mechanism and the motor chamber are located almost horizontally, a communication hole is provided between the bottom of the motor chamber and the lowest allowable oil level position in the crank chamber, and a communication hole is provided in the middle of the communication hole. A compressor characterized in that a check valve chamber is closed using a bottom cover of a crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13079482U JPS5935687U (en) | 1982-08-31 | 1982-08-31 | compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13079482U JPS5935687U (en) | 1982-08-31 | 1982-08-31 | compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5935687U JPS5935687U (en) | 1984-03-06 |
| JPS6245095Y2 true JPS6245095Y2 (en) | 1987-12-01 |
Family
ID=30295917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13079482U Granted JPS5935687U (en) | 1982-08-31 | 1982-08-31 | compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5935687U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0647841B2 (en) * | 1985-02-26 | 1994-06-22 | 理研軽金属工業株式会社 | Refractory layer joint equipment for expansion joints |
-
1982
- 1982-08-31 JP JP13079482U patent/JPS5935687U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5935687U (en) | 1984-03-06 |
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