Reciprocating compressor crankshaft adapter and method

Patent metadata

Field	Value
Publication number	US-10202969-B2
Application number	US-201615388942-A
Country	US
Kind code	B2
Filing date	Dec 22, 2016
Priority date	Aug 31, 2010
Publication date	Feb 12, 2019
Grant date	Feb 12, 2019

Abstract

Method and device for lubricating a connection. A housing is configured to house a crankshaft adapter that connects an oil pump to a compressor. The housing includes a shell forming a round cavity configured to receive the crankshaft adapter; an oil feed conduit configured to enter through the shell into the round cavity and to deliver oil; a first drain conduit, opposite to the oil feed conduit, and configured to enter through the shell into the round cavity; a plug provided in the first drain conduit; and a second drain conduit configured to enter through the shell into the round cavity. The second drain conduit is located between the oil feed conduit and the first drain conduit, substantially between 50 and 130 degrees relative to the first drain conduit on a periphery of the shell.

First claim

What is claimed is:

1. A housing configured to house a crankshaft adapter that connects an oil pump to a compressor, the housing comprising:
a shell forming a round cavity configured to receive the crankshaft adapter;
an oil feed conduit configured to enter through the shell into the round cavity and to deliver oil;
a first drain conduit, opposite to the oil feed conduit, and configured to enter through the shell into the round cavity and to drain the oil from the round cavity;
a plug provided in the first drain conduit to reduce an amount of oil drained away from the round cavity; and
a second drain conduit configured to enter through the shell into the round cavity and to drain away oil from the round cavity,
wherein the second drain conduit is located between the oil feed conduit and the first drain conduit such that overflows of oil from the round cavity not drained through the first drain conduit are drained out of the round cavity.

2. The housing of claim 1 , wherein the plug has a conduit configured to allow oil to drain from the round cavity, an inner diameter of the conduit of the plug being smaller than an inner diameter of the second drain conduit.

3. The housing of claim 1 , further comprising:
a first set of holes configured to be attached to the compressor; and
a second set of holes configured to be attached to the oil pump.

4. The housing of claim 1 , further comprising:
the compressor;
the oil pump; and
the crankshaft adapter having at least one fin outwardly projecting from a surface on an outer periphery of the crankshaft adapter to distribute oil in the housing,
wherein the housing is bolted between the compressor and the oil pump and the crankshaft adapter is configured to connect to a shaft of the oil pump and a crankshaft of the compressor.

5. The housing of claim 4 , wherein a connection between the shaft of the oil pump and the crankshaft adapter is a splined connection.

6. The housing of claim 5 , wherein the crankshaft adapter is bolted to the crankshaft of the compressor.

7. The housing of claim 4 , further comprising:
a bearing configured to support the crankshaft of the compressor.

8. The housing of claim 4 , wherein the crankshaft adapter has a plurality of fins circumferentially spaced relative to each other and outwardly projecting from the surface on the outer periphery of the crankshaft adapter.

9. A reciprocating compressor, comprising:
a casing;
an oil pump attached to the casing and configured to pump oil through the compressor;
a crankshaft adapter that connects the oil pump to the compressor the crankshaft adapter having at least one fin on an outer periphery of the crankshaft adapter to distribute oil in the housing; and
a housing interposed between the casing and the oil pump and configured to house the crankshaft adapter, the housing including,
a shell forming a round cavity configured to receive the crankshaft adapter,
an oil feed conduit configured to enter through the shell into the round cavity and to deliver oil,
a first drain conduit, opposite to the oil feed conduit, and configured to enter through the shell into the round cavity and to drain the oil from the round cavity,
a plug provided in the first drain conduit to reduce an amount of oil drained away from the round cavity, and
a second drain conduit configured to enter through the shell into the round cavity and to drain away oil from the round cavity,
wherein the second drain conduit is located between the oil feed conduit and the first drain conduit such that overflows of oil from the round cavity not drained through the first drain conduit are drained out of the round cavity.

10. The reciprocating compressor of claim 9 , wherein the plug has a conduit configured to allow oil to drain from the round cavity, an inner diameter of the conduit of the plug being smaller than an inner diameter of the second drain conduit.

11. The reciprocating compressor of claim 9 , wherein the housing is bolted between the compressor and the oil pump and the crankshaft adapter is configured to connect to a shaft of the oil pump and a crankshaft of the compressor.

12. The reciprocating compressor of claim 11 , wherein a connection between the shaft of the oil pump and the crankshaft adapter is a splined connection.

13. The reciprocating compressor of claim 9 , further comprising:
a bearing provided inside the housing and configured to support a crankshaft of the compressor.

14. The reciprocating compressor of claim 9 , further comprising:
a first conduit configured to fluidly communicate an output port of the oil pump with the oil feed conduit of the compressor; and
a second conduit configured to fluidly communicate an input port of the oil pump with the first and second drain conduits of the compressor.

15. The reciprocating compressor of claim 9 wherein the at least one fin outwardly projects from a surface on the outer periphery of the crankshaft adapter.

16. The reciprocating compressor of claim 15 , wherein the crankshaft adapter has a plurality of fins circumferentially spaced relative to each other and outwardly projecting from the surface on the outer periphery of the crankshaft adapter.

17. A method for oiling an inside of a housing provided between an oil pump and a compressor, the method comprising:
attaching the housing between the oil pump and the compressor;
placing a crankshaft adapter inside a shell of the housing, the shell having a round cavity and the crankshaft adapter having at least one fin on an outer periphery of the crankshaft adapter and distributing oil in the housing via the at least one fin;
establishing an oil feed conduit through the shell to penetrate into the round cavity for delivering oil;
forming a first drain conduit, opposite to the oil feed conduit, to enter through the shell into the round cavity and to drain the oil from the round cavity;
placing a plug in the first drain conduit to reduce an amount of oil drained away from the round cavity; and
establishing a second drain conduit through the shell into the round cavity to drain away oil from the round cavity, wherein the second drain conduit is located between the oil feed conduit and the first drain conduit such that overflows of oil from the round cavity not drained through the first drain conduit are drained out of the round cavity.

18. The method of claim 17 , further comprising:
forming a conduit in the plug to allow oil to drain from the round cavity, an inner diameter of the conduit of the plug being smaller than an inner diameter of the second drain conduit.

19. The method of claim 17 , further comprising:
connecting the crankshaft adapter to a shaft of the oil pump and to a crankshaft of the compressor.

20. The method of claim 17 , further comprising:
establishing a flowing path from an output port of the oil pump to the housing, the round cavity, the first and second drain conduits, and back to an input port of the oil pump.

21. The method of claim 17 , further comprising:
providing a splined connection between a shaft of the oil pump and the crankshaft of the compressor.

Assignees

• Nuovo Pignone Tecnologie Srl

Inventors

• Do Vinh
• Raynal Jeffrey
• Helton Jason Andrew
• Trevino Carlos

Classifications

• F04B39/0284

  Constructional details, e.g. reservoirs in the casing (swash-plate compressors F04B27/0878, F04B27/109) · CPC title

• F04B39/0276 Primary

  the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors · CPC title

• F04B27/0404

  Details, component parts specially adapted for such pumps · CPC title

• Y10T403/255

  Cross-Sectional Technologies · mapped topic