Separating device for separating a fluid from gas as well as separating element and coupling element for such a separating device

Patent metadata

Field	Value
Publication number	US-11679353-B2
Application number	US-202117516333-A
Country	US
Kind code	B2
Filing date	Nov 1, 2021
Priority date	Feb 28, 2017
Publication date	Jun 20, 2023
Grant date	Jun 20, 2023

Abstract

A separating device for separating a liquid from gas is provided with a separating element that has a housing with housing cover closing off an end face of the housing. A filter element is arranged in the housing. A coupling element is provided to couple the separating element to a connector device. The housing cover has a central first gas passage and a second gas passage arranged radially outwardly of the first gas passage. The housing cover has a housing cover thread correlated with the first gas passage. The housing cover thread is to be screwed to a coupling element thread of the coupling element. A fluid discharge channel is arranged within the coupling element for discharging separated liquid from the separating device. The housing cover thread and the coupling element thread, in a position of use of the separating device, are connected substantially seal-tightly to each other.

First claim

What is claimed is:

1. A separating element comprising:
a housing comprising
a housing cover closing off an end face of the housing;

at least one filter element arranged in the housing and configured to separate a liquid from a gas;
wherein the housing cover comprises at least one first gas passage formed as a through opening and arranged centrally in the housing cover in relation to a mounting axis of the separating element;
wherein the housing cover comprises a housing cover thread correlated with the at least one first gas passage,
wherein the housing cover thread is configured to screw onto a coupling element thread of a coupling element configured to couple the separating element with a connector device;
wherein the housing cover comprises
at least one second gas passage that, relative to the mounting axis of the separating element, is arranged radially outwardly of the at least one first gas passage;

wherein the at least one first gas passage and the at least one second gas passage are the only openings of the housing cover and, except for the at least one first gas passage and the at least one second gas passage, the housing cover is completely closed;
wherein the housing cover thread is configured to substantially seal-tightly engage the coupling element thread;
wherein the filter element comprises an end face which, in relation to the mounting axis of the separating element, extends radially and faces the housing cover,
wherein the filter element comprises an end disk disposed on the end face of the at least one filter element;
wherein the end disk comprises:
a radially outer first annular portion arranged on the end face of the filter element;
a circular radially inner rim of the end disk arranged radially inwardly and surrounding the at least one first gas passage of the housing cover;

a coupling element formed as a coupling nipple having a first axial end and an opposite second axial end, a radially outer circumferential wall of the coupling element, in a position of use of the coupling element, extends through the at least one first gas passage, the coupling nipple comprising:
a coupling socket having a radially outer thread, the coupling socket extending through the housing cover at least one first gas passage, the radially outer thread screwed onto and engaging the housing cover thread;

wherein the radially inner rim of the end disk forms:
a first radially projecting collar projecting radially inwardly towards a radially outer side of the coupling nipple;
a second radially projecting collar axially spaced part from the first radially projecting collar and a projecting radially inwardly towards a radially outer side of the coupling nipple,
wherein a coaxial gap is formed between the radially outer side of the coupling nipple and both of the first and the second radially projecting collars;

wherein the end disk further forms an annular fluid chamber formed as an annular “V” or “U” cross section having two axially projecting legs of the “V” or “U” cross section and formed into the end disk, circumferentially surrounding the central opening of the housing cover, an axially outer tip of the annular “V” or “U” cross section of the annular fluid chamber projecting axially outwardly beyond the axial end face of the filter element to form a outer closed bottom wall of the of the annular fluid chamber, the radially inner and radially outer walls of the annular fluid retaining chamber projecting axially inwardly from the closed bottom wall and axially inwardly beyond the axial end face of the filter element into the interior of the filter element;
wherein a radial inner leg of the annular “V” or “U” cross section form an axially extending annular circular inner rim surrounding the through opening and extending in a radial direction relative to the mounting axis of the separating element.

2. The separating element according to claim 1 , wherein
the at least one first gas passage of the housing cover is cylinder-shaped and
the housing cover thread comprises
at least one thread turn that winds continuously in a helix shape about a jacket of the at least one first gas passage and is completely closed so as to have no cuts and no interruptions.

3. The separating element according to claim 1 , wherein
a screw-in depth of the housing cover thread amounts to at least one third of a diameter of the at least one first gas passage.

4. The separating element according to claim 1 , wherein
the housing cover thread is embodied to meet at least the tolerance class medium (m) according to DIN ISO 965-1.

5. The separating element according to claim 1 , wherein
the end disk is configured such that the end disk and the coupling element are spaced apart and without contact in a position of use of the separating element.

6. The separating element according to claim 5 , wherein
a diameter of the circular inner rim area is selected such that the end disk and the coupling element are without contact in the position of use of the separating element.

7. The separating element according to claim 1 , wherein
the fluid retaining chamber is configured to throttle, retain, or collect the liquid that has been separated by the filter element from the gas and that flows into the through opening.

8. The separating element according to claim 1 , wherein
the circular inner rim area of the end disk comprises
at least one first stay element surrounding the through opening and extending, in relation to the mounting axis of the separating element, in a radial direction inwardly,

wherein the at least one stay element surrounds a circular opening,
wherein the end disk comprises at least one second stay element surrounding the through opening and extending, in relation to the mounting axis of the separating element, in the radial direction inwardly,
wherein the at least one first stay element and the at least one second stay element are arranged on the radial inner leg of the annular “V” or “U” cross section, the at least one first stay element and the at least one second stay element axially displaced relative to each other in an axial direction of the mounting axis of the separating element such that, in the position of use of the separating element, the at least one first stay element and the at least one second stay element axially delimit a second fluid retaining chamber formed between the at least one first stay element and the at least one second stay element,
wherein the second fluid retaining chamber is configured to throttle, retain, or collect the liquid that has been separated by the filter element from the gas and that flows into the through opening.

9. The separating element according to claim 8 , wherein
the at least one first stay element and the at least one second stay element are configured to interact in the manner of a labyrinth seal with the coupling element, extending through the through opening in a position of use of the separating element, in such a way that a gap of the through opening arranged between the end disk and the coupling element is substantially fluid-impermeable and/or substantially liquid-impermeable.

10. The separating element according to claim 1 , further comprising at least one sealing and damping element that is seal-tightly compressed between the end disk and an inner side of the housing cover facing an interior of the housing, wherein the sealing and damping element is configured to seal a clean side of the separating element from a raw side of the housing containing unpurified fluid and configured to dampen axially oriented vibrations of the filter element occurring in an axial direction of the mounting axis of the separating element.

Assignees

• Mann & Hummel Gmbh

Inventors

• Bartelt Bertram
• Dworatzek Klemens

Classifications

• B01D46/60 Primary

  arranged concentrically or coaxially · CPC title

• B01D46/001

  Means for connecting filter housings to supports · CPC title

• B01D46/2411

  Filter cartridges · CPC title

• B01D46/0031

  with collecting, draining means · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title