JPS57135277A - Parallel compression type refrigerating plant - Google Patents
Parallel compression type refrigerating plantInfo
- Publication number
- JPS57135277A JPS57135277A JP2073081A JP2073081A JPS57135277A JP S57135277 A JPS57135277 A JP S57135277A JP 2073081 A JP2073081 A JP 2073081A JP 2073081 A JP2073081 A JP 2073081A JP S57135277 A JPS57135277 A JP S57135277A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- compressor
- compressors
- check valve
- compression element
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0207—Lubrication with lubrication control systems
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE:To retain suitably the oil levels in both compressors under all operation conditions, by positively returning oil to one of the compressors while supplying oil through an oil tank, and a valve communicative only with the other. CONSTITUTION:A check valve 4 for stopping the flow of a gas and a lubricant from the first compressor 1 to the second compressor 2 is provided in the intermediate of a pressure and oil equalizing pipe 3, and the oil tank 5 is situated between the check valve 4 and the compressor 1. When both the compressors 1, 2 are in operation, or only the first compressor 1 is in operation, since the pressure in a first compression element chamber 1d becomes lower than that of a second compression element chamber 2d, the amount of the oil in the first compression element chamber 1d tends to increase more than necessary, but since the corresponding amount of oil can be stored in the tank 6, the amount of oil therein can be suitably retained. If only the second compressor 2 is in operation, the flow from the first compressor to the second compressor 2 can be prevented by the check valve 4, and therefore the oil level can be retained to normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2073081A JPS57135277A (en) | 1981-02-12 | 1981-02-12 | Parallel compression type refrigerating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2073081A JPS57135277A (en) | 1981-02-12 | 1981-02-12 | Parallel compression type refrigerating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57135277A true JPS57135277A (en) | 1982-08-20 |
Family
ID=12035296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2073081A Pending JPS57135277A (en) | 1981-02-12 | 1981-02-12 | Parallel compression type refrigerating plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57135277A (en) |
-
1981
- 1981-02-12 JP JP2073081A patent/JPS57135277A/en active Pending
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