Ejector device and combination of a cylinder head cover and an ejector device

Patent metadata

Field	Value
Publication number	US-10982575-B2
Application number	US-201816163859-A
Country	US
Kind code	B2
Filing date	Oct 18, 2018
Priority date	Apr 19, 2016
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

An ejector device having a base body that includes a suction chamber for sucking in a suction medium, a mixing channel for mixing a propelling medium with the suction medium, and a drive nozzle device for generating and directing a propelling medium jet along a jet direction from the suction chamber and into the mixing channel. The ejector device also includes a fastening device for fastening the base body of the ejector device to a suction channel. The fastening device also includes at least one of a translational locking device for avoiding a translational movement of the base body relative to the suction channel in a direction running parallel to a center axis of a connecting piece of the suction channel and a rotational locking device for preventing the base body from rotating relative to the suction channel.

First claim

The invention claimed is:

1. An ejector device comprising a base body which comprises the following:
a suction chamber for sucking in a suction medium;
a mixing channel for mixing a propelling medium with the suction medium; and
a drive nozzle device for generating and directing a propelling medium jet along a jet direction from the suction chamber and into the mixing channel,
wherein the ejector device comprises a fastening device for fastening the base body of the ejector device to a suction channel,
wherein the fastening device comprises:
a translational locking device for avoiding a translational movement of the base body relative to the suction channel in a direction running parallel to a center axis of a connecting piece of the suction channel, and
a rotational locking device for preventing the base body from rotating relative to the suction channel,

wherein the translational locking device comprises one or more latching devices or is formed by one or more latching devices, and
wherein the translational locking device and the rotational locking device are spatially separate from one another and wherein the translational locking device and the rotational locking device are actuable consecutively,
wherein the fastening device is configured in such a way that the base body can initially be slipped onto the connecting piece of the suction channel through a translational movement along a translational direction and can thereby be fixed in a translational orientation relative to the connecting piece and wherein the fastening device is further configured in such a way that the base body can then be rotated about a center axis of the connecting piece by means of the fastening device and can thereby be fixed in a rotational orientation relative to the connecting piece.

2. The ejector device as claimed in claim 1 , wherein a suction chamber element of the base body comprises the following components:
a housing for the suction chamber;
a suction channel connection;
a propelling medium connection;
a drive nozzle element receiver;
a propelling medium channel for the fluidic connection of the propelling medium connection to the drive nozzle element receiver;
a flange portion for connecting the suction chamber element to a mixing channel element of the base body that differs therefrom;
one or more locking elements of the translational locking device of the fastening device for fastening the base body to the suction channel;
one or more locking elements of the rotational locking device of the fastening device for fastening the base body to the suction channel;
a positioning device for positioning the suction chamber element relative to the translational locking device and/or relative to the rotational locking device.

3. The ejector device as claimed in claim 1 , wherein a mixing channel element of the base body comprises the following components:
a housing for the mixing channel;
a discharge connection;
a flange portion for connecting the mixing channel element to a suction chamber element of the base body that differs therefrom;
one or more locking elements of the rotational locking device of the fastening device for fastening the base body to the suction channel;
a positioning device for positioning the mixing channel element relative to the translational locking device and/or relative to the rotational locking device.

4. The ejector device as claimed in claim 1 , wherein the fastening device comprises the translational locking device and the rotational locking device, and the translational locking device and the rotational locking device are at least one of:
a) different from one another,
b) functionally separate from one another, and
c) actuable independently of one another.

5. The ejector device as claimed in claim 1 , wherein the translational locking device and/or the rotational locking device each comprise one or more locking elements and/or latching receivers.

6. The ejector device as claimed in claim 5 , wherein one or more locking elements of the translational locking device and/or of the rotational locking device are configured as projections on a suction chamber element of the base body.

7. The ejector device as claimed in claim 5 , wherein one or more locking elements of the translational locking device and/or of the rotational locking device are configured as projections on a mixing channel element of the base body.

8. The ejector device as claimed in claim 5 , wherein a locking element of the translational locking device is configured as an annular bead or thickening on an outside of the connecting piece of the suction channel.

9. The ejector device as claimed in claim 5 , wherein one or more locking elements of the translational locking device and/or of the rotational locking device are configured as depressions in the connecting piece of the suction channel.

10. The ejector device as claimed in claim 5 , wherein one or more locking elements of the translational locking device and/or of the rotational locking device are arranged on a half of a mixing channel element facing away from the suction chamber.

11. A combination of a cylinder head cover and an ejector device as claimed in claim 1 .

12. The combination as claimed in claim 11 , wherein the cylinder head cover comprises one or more locking elements of the translational locking device and/or one or more locking elements of the rotational locking device which can be brought into engagement for the translational and/or rotational locking of the base body of the ejector device relative to the cylinder head cover with one or more locking elements of the translational locking device and/or the rotational locking device arranged on the base body.

13. The ejector device as claimed in claim 5 , wherein one or more locking elements of the rotational locking device are arranged on an end region of a mixing channel element facing away from the suction chamber.

14. A combination of a cylinder head cover and an ejector device,
wherein a base body of the ejector device comprises the following:
a suction chamber for sucking in a suction medium;
a mixing channel for mixing a propelling medium with the suction medium; and
a drive nozzle device for generating and directing a propelling medium jet along a jet direction from the suction chamber and into the mixing channel,

wherein the ejector device comprises a fastening device for fastening the base body of the ejector device to a suction channel,
wherein the fastening device comprises:
a translational locking device for avoiding a translational movement of the base body relative to the suction channel in a direction running parallel to a center axis of a connecting piece of the suction channel, and
a rotational locking device for preventing the base body from rotating relative to the suction channel,
wherein the translational locking device comprises one or more latching devices or is formed by one or more latching devices, and
wherein the translational locking device and the rotational locking device are spatially separate from one another and wherein the translational locking device and the rotational locking device are actuable consecutively,

wherein the fastening device is configured in such a way that the base body can initially be slipped onto the connecting piece of the suction channel through a translational movement along a translational direction and can thereby be fixed in a translational orientation relative to the connecting piece and wherein the fastening device is further configured in such a way that the base body can then be rotated about a center axis of the connecting piece b

Assignees

• Elringklinger Ag

Inventors

• Herter Stefan
• Jaeger Martin
• Ehni Armin
• Dwenger Stefan
• Huber Yvonne

Classifications

• F04F5/16 Primary

  displacing elastic fluids · CPC title

• F04F5/24

  displacing liquids, e.g. containing solids, or liquids and elastic fluids · CPC title

• F04F5/44

  Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42 · CPC title

• F04F5/46

  Arrangements of nozzles · CPC title

• F04F5/20

  for evacuating · CPC title