Device for separating liquid from a gas stream coming from a liquid injected vacuum pump or compressor

Patent metadata

Field	Value
Publication number	US-10814259-B2
Application number	US-201615569556-A
Country	US
Kind code	B2
Filing date	Apr 13, 2016
Priority date	Apr 30, 2015
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

A device for separating liquid from a gas stream within a liquid injected vacuum pump or compressor, said device comprising: two communicating vessels having a common section extending over at least a part of the height; an inlet opening positioned on the opposite side of the common section; at least two bucket shaped vessels, each provided within one of the two communicating vessels; a lid comprising an outlet opening; wherein at least one of the two bucket shaped vessels forms a fluid passage between the wall of the communicating vessel and the wall of the bucket shaped vessel for allowing a fluid to pass there through.

First claim

The invention claimed is:

1. A device for separating liquid from a gas stream within a liquid injected vacuum pump or compressor, said device comprising:
two communicating vessels having a bottom plate and a lateral wall extending from said bottom plate and having a first height, said two vessels having a common section along a back side of the two communicating vessels extending over at least a part of said height, wherein the common section is created by cutting said lateral wall along the height so as to create two wall parts and adjoining said wall parts over at least a part of said height;
an inlet opening positioned on the opposite side of the common section along a front side of the two communicating vessels, wherein a distance is created between said inlet opening and the common section in a way such that the gas stream travels said distance before the gas stream is split into two separate flows by the common section into said two communicating vessels;
at least two bucked shaped vessels, each provided within one of the two communicating vessels;
a lid comprising an outlet opening wherein
at least one of the two bucket shaped vessels forms a fluid passage between the wall of the communicating vessel and the wall of the bucket shaped vessel for allowing a fluid to pass there through.

2. The device according to claim 1 , wherein at least one of the two bucket shaped vessels has a second height at least 10% smaller than the first height.

3. The device according to claim 2 , wherein the bucket shaped vessels have a circular cross-section.

4. The device according to claim 1 , wherein at least one of the two bucket shaped vessels comprises one or more holes at the bottom, for allowing fluid to pass there through.

5. The device according to claim 4 , wherein said device further comprises a liquid filter mounted in each of said one or more holes.

6. The device according to claim 4 , wherein at least one of the two bucket shaped vessels further comprises a recess for collecting the liquid drained-off by said liquid filter(s).

7. The device according to claim 6 , wherein the bottom plate of the two communicating vessels creates a slope having the lowest point of contact with the lateral wall on the side comprising the liquid drainage and the highest point of contact with the lateral wall on the opposite side.

8. The device according to claim 1 , wherein at least one of the two bucket shaped vessels comprises a top plate positioned in direct connection with the common section and further comprising one or more holes, for allowing fluid to pass there through.

9. The device according to claim 8 , wherein said device further comprises a cyclone mounted in each of said one or more holes.

10. The device according to claim 9 , further comprising means for removing the liquid from said recess.

11. The device according to claim 1 , further comprising a continuous bottom plate and a lateral plate connecting the two communicating vessels and comprising the inlet opening.

12. The device according to claim 1 , wherein the angle created by the two adjoined wall parts forming said common section is approximately 90° or less.

13. The device according to claim 1 , further comprising a liquid drainage on the lateral wall of the two communicating vessels.

14. The device according to claim 1 , further comprising an orifice for checking the level of the liquid within the two communicating vessels.

15. The device according to claim 1 , further comprising a filter vessel positioned between the outlet opening and the common section.

16. The device according to claim 1 , wherein at least one of the two bucket shaped vessels comprises an extension positioned on the top plate for directing the flow of fluid from the inlet opening towards the fluid passage.

17. The device according to claim 16 , wherein each of the two bucket shaped vessels comprises an extension positioned on the top plate.

18. The device according to claim 1 , wherein said inlet opening is connected to a liquid injected vacuum pump or compressor.

19. A method for separating liquid from a gas stream within a liquid injected vacuum pump or compressor, said method comprising the steps of:
providing two communicating vessels having a bottom plate and lateral walls extending from said bottom plate and having a first height, said two vessels having a common section along a back side of the two communicating vessels extending over at least a part of said height, wherein the common section is created by cutting said lateral wall along the height so as to create two wall parts and adjoining said wall parts over at least a part of said height and positioning said common section on the opposite side of an inlet opening along a front side of the two communicating vessels;
providing at least one bucked shaped vessel within each of the two communicating vessels;
providing a fluid passage between the wall of each of the two communicating vessels and the wall of each of the two bucket shaped vessels for allowing a fluid to pass there through;
directing a fluid flow through said inlet opening and splitting the fluid flow from said inlet opening into two flows directed through the fluid passage wherein a distance is created between said inlet opening and the common section in a way such that the gas stream travels said distance before the gas stream is split into two separate flows by the common section into said two communicating vessels;
collecting the liquid dripping from said fluid flowing through the two communicating vessels on the bottom plate; and
providing a lid comprising an outlet opening and directing the fluid passing through said fluid passage through the outlet opening.

20. The method according to claim 19 , further comprising the step of providing at least one hole at the bottom of at least one of the two bucket shaped vessels for directing the fluid flow there through.

Assignees

• Atlas Copco Airpower Nv

Inventors

• Gorrebeeck Niels
• Desiron Andries Jan F
• Beuckelaers Rudolf Jozef M
• MIRECKI Tomasz
• Vyvey Ruben Pieter
• Aerts Johan Gustaaf K
• Everaert Willem

Classifications

• B01D45/02 Primary

  by utilising gravity · CPC title

• F04B39/16 Primary

  Filtration; Moisture separation · CPC title

• F04C29/026

  Lubricant separation · CPC title

• B04C5/28

  for parallel flow · CPC title

• B01D45/12

  by centrifugal forces (centrifuges B04B; cyclones B04C) · CPC title