Oil separator

Patent metadata

Field	Value
Publication number	US-9890675-B2
Application number	US-201314399485-A
Country	US
Kind code	B2
Filing date	May 9, 2013
Priority date	May 10, 2012
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

An oil separator includes a casing that has an inlet for air and an outlet for air, and an impingement member that is provided inside the casing. Air that contains oil is introduced through the inlet into the casing and caused to strike the impingement member so that the oil is separated from the introduced air and is recovered. The outlet opens in the horizontal direction of the casing. The oil separator further includes an L-shaped elbow member that is attached to the outlet. The elbow member protrudes in the horizontal direction from the outlet and is bent upward.

First claim

The invention claimed is:

1. A system comprising:
a compressor that supplies compressed air;
an air dryer that dries the compressed air supplied from the compressor and supplies dried compressed air, the air dryer comprising a supplying line that supplies the dried compressed air and an exhaust line that discharges purge air; and
an oil separator connected to the exhaust line, the oil separator comprising:
a housing including an inlet for introducing the purge air from the air dryer and an outlet for discharging cleaned air;
an expansion chamber, which is located in the housing and expands the purge air that has been introduced through the inlet;
an accommodation member, which is located in the housing and communicates with the expansion chamber in the vertical direction the accommodation member comprising a vertically-extending wall portion configured to connect to the housing and defining a side face, wherein the accommodation member accommodates an impingement member and a through hole is formed at the side face of the accommodation member;
a communication section that connects the inside of the housing and the outlet to each other; and
a collected liquid storage portion located below the accommodation member, wherein
the oil separator is configured to introduce the purge air into the housing through the inlet, and cause the purge air to strike the impingement member to separate oil from the introduced purge air, thereby recovering the oil,
the inlet and the outlet are located in an upper section of the housing, and
the accommodation member separates oil from the introduced purge air and discharges the separated oil downward, and discharges the cleaned air via the through hole at the side face.

2. The system according to claim 1 , wherein a baffle plate is provided in the housing at a position in front of the inlet, the baffle plate obstructing the introduced purge air from flowing straight ahead.

3. The system according to claim 1 , wherein the expansion chamber is one of a plurality of expansion chambers.

4. The system according to claim 1 , wherein,
the housing includes a case and a lid, and
the case and the lid each have a flange and are fastened together at the flanges in the vertical direction.

5. The system according to claim 1 , wherein the collected liquid storage portion includes a heater for evaporating water by heating collected liquid.

6. The system according to claim 1 , wherein a hose for draining the collected liquid is connected to a lower section of the housing.

7. The system according to claim 6 , wherein the hose is transparent and is provided with a scale corresponding to the volume of the collected liquid storage portion.

8. The system according to claim 1 , wherein an exhaust noise reducing member is connected to the outlet to reduce exhaust noise from the outlet.

9. The system according to claim 1 , wherein a nonwoven fabric filter is provided in the expansion chamber.

10. The system according to claim 1 , wherein
during loading operation, the air dryer passes the compressed air through a desiccant to remove oil and water from the compressed air, and discharges the dried compressed air via the supplying line,
during unloading operation, the air dryer passes the dried compressed air supplied via the supplying line through the desiccant to regenerate the desiccant, and discharges the purge air, including the removed oil and water via the exhaust line, and
the oil separator, during the unloading operation, causes the purge air introduced through the inlet to strike the impingement member to separate oil from the introduced purge air, thereby recovering the oil.

Assignees

• Nabtesco Automotive Corp

Inventors

• Sugio Takuya
• Minato Ichiro

Classifications

• B01D46/0031 Primary

  with collecting, draining means · CPC title

• F04B39/04

  Measures to avoid lubricant contaminating the pumped fluid · CPC title

• A47L9/1641

  for parallel flow · CPC title

• F01M11/08

  Separating lubricant from air or fuel-air mixture before entry into cylinder (separating in general B01D) · CPC title

• F01M2013/045

  using compression or decompression of the gas · CPC title