Claims
- 1. A system of parallel compressors for compressing fluids miscible with oil, comprising:
- a plurality of compressors connected in parallel;
- means for internally separating each compressor into a discharge chamber, a suction chamber, and a crankcase chamber, the chambers of each compressor being independent of one another;
- one or more horizontal tubes connected between the crankcase chambers and positioned at a level such that oil occupies a lower portion of each tube and gas occupies the remaining portion of each tube;
- a suction manifold connected to the suction chambers;
- a capillary tube connecting each crankcase chamber in gas flow communication with the suction manifold, the capillary tube including a calibrating hole;
- a discharge manifold connected to the discharge chambers;
- means connected to the discharge manifold for separating oil from compressed fluids leaving the discharge chambers; and
- a conduit connecting the oil separating means to at least one of the horizontal tubes for returning oil to the crankcase chambers, the conduit including a calibrating hole.
- 2. A system of parallel compressors for compressing fluids miscible with oil, comprising:
- a plurality of compressors connected in parallel;
- means for internally separating each compressor into a discharge chamber, a suction chamber, and a crankcase chamber, the chambers of each compressor being independent of one another, the separating means including a dividing cover separating the suction chamber and the crankcase chamber, the dividing cover including a calibrating hole connecting the crankcase chamber in gas flow communication with the suction chamber;
- one or more horizontal tubes connected between the crankcase chambers and positioned at a level such that oil occupies a lower portion of each tube and gas occupies the remaining portion of each tube;
- a suction manifold connected to the suction chambers;
- a discharge manifold connected to the discharge chambers;
- means connected to the discharge manifold for separating oil from compressed fluids leaving the discharge chambers; and
- a conduit connecting the oil separating means to at least one of the horizontal tubes for returning oil to the crankcase chambers, the conduit including a calibrating hole.
- 3. A system of parallel compressors for compressing fluids miscible with oil, comprising:
- a plurality of compressors connected in parallel;
- means for internally separating each compressor into a discharge chamber, a suction chamber, and a crankcase chamber, the chambers of each compressor being independent of one another;
- conduit means for connecting the crankcase chambers in oil and gas flow communication with one another;
- a suction manifold connected to the suction chambers;
- means for equalizing the pressure of each crankcase chamber with the pressure of the suction manifold comprising a capillary tube connecting each crankcase chamber in gas flow communication with the suction manifold;
- a discharge manifold connected to the discharge chambers;
- means connected to the discharge manifold for separating oil from compressed fluids leaving the discharge chambers; and
- means for returning the oil from the oil separating means to the crankcase chambers.
- 4. The system of claim 3, wherein each capillary tube includes a calibrating hole.
- 5. The system of claim 3, wherein the conduit means for connecting the crankcase chambers in oil and gas flow communication with one another comprise one or more horizontal tubes connected between the crankcase chambers and positioned at a level such that oil occupies a lower portion of each tube and gas occupies the remaining portion of each tube.
- 6. The system of claim 5, wherein the means for returning the oil from the oil separating means to the crankcase chambers comprise a conduit connected to at least one of the horizontal tubes.
- 7. The system of claim 6, wherein the conduit includes a calibrating hole.
- 8. A system of parallel compressors for compressing fluids miscible with oil, comprising:
- a plurality of compressors connected in parallel;
- means for internally separating each compressor into a discharge chamber, a suction chamber, and a crankcase chamber, the chambers of each compressor being independent of one another, the separating means including a dividing cover separating the suction chamber and the crankcase chamber, the dividing cover including a calibrating hole connecting the crankcase chamber in gas flow communication with the suction chamber;
- conduit means for connecting the crankcase chambers in oil and gas flow communication with one another;
- a suction manifold connected to the suction chambers;
- a discharge manifold connected to the discharge chambers;
- means connected to the discharge manifold for separating oil from compressed fluids leaving the discharge chambers; and
- means for returning the oil from the oil separating means to the crankcase chambers.
- 9. The system of claim 8, wherein the conduit means for connecting the crankcase chambers in oil and gas flow communication with one another comprise one or more horizontal tubes connected between the crankcase chambers and positioned at a level such that oil occupies a lower portion of each tube and gas occupies the remaining portion of each tube.
- 10. The system of claim 8, wherein the means for returning the oil from the oil separating means to the crankcase chambers comprise a conduit connected to at least one of the horizontal tubes.
- 11. The system of claim 10, wherein the conduit includes a calibrating hole.
Priority Claims (1)
| Number |
Date |
Country |
Kind |
| 8502912 |
Jun 1985 |
BRX |
|
Parent Case Info
This is a divisional of application Serial No. 044,363, filed Apr. 14, 1987, now U.S. Pat. No. 4,822,259.
This invention relates to levelling the oil of compressors and/or compression machines for fluids (vapor or gas) which are connected in parallel in the same circuit.
It relates to a device which may be used in the Industrial Engineering area, for levelling the crankcase oil, when two or more compression machines for gas or vapor are connected in parallel, in the same circuit.
The system provided by the present invention may be specifically used for air conditioning and refrigeration, or more generally to compressed air and simple processes for mechanical compression of vapor and gas.
The compressors used in the present invention may be, for example, piston (reciprocal), centrifugal, blade, or screw type machines of volumetric displacement, which function to reduce the specific volume of a fluid in the physical state of vapor or gas.
US Referenced Citations (13)
Foreign Referenced Citations (3)
| Number |
Date |
Country |
| 0064018 |
Apr 1982 |
EPX |
| 0149366 |
Jan 1984 |
EPX |
| 131885 |
Aug 1982 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
| Parent |
44363 |
Apr 1987 |
|
Patent Grant
4895498
