Hydrodynamic retarder

Patent metadata

Field	Value
Publication number	US-9677634-B2
Application number	US-201314236318-A
Country	US
Kind code	B2
Filing date	Feb 4, 2013
Priority date	Feb 3, 2012
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

The invention relates to a hydrodynamic retarder comprising—a rotor ( 1 ) and a stator ( 2 ) which form a working chamber ( 3 ) with each other;—a first working medium connection ( 6 );—a second working medium connection ( 7 ); and—a working medium container ( 4 ) that has an outlet ( 10 ), which is connected to the first working medium connection via a line, and an inlet ( 11 ), which is connected to the second working medium connection via a line; wherein—the working medium container is made of two housing parts ( 8, 9 ), which are joined together along a parting line ( 12 ). According to the invention:—the two housing parts together enclose the working medium storage volume;—one of the two housing parts simultaneously forms a part of a retarder housing ( 14 ) which supports or forms the stator and partly forms all or some of the working medium-conducting connections between the working medium storage volume and the working chamber; and—a separating plate ( 13 ) is inserted between, the two housing parts, said separating plate together with one or both of the housing parts forming cavities for the working medium-conducting connections and/or the working medium storage volume.

First claim

The invention claimed is:

1. A hydrodynamic retarder comprising:
a bladed rotor and a bladed stator, which form together a working chamber which can be filled with working medium and emptied thereof;
at least one first working medium connection for feeding working medium into the working chamber; and a second working medium connection for discharging working medium from the working chamber;
a working medium container, which limits a working medium storage volume for accommodating working medium which is not situated in the working chamber at that time, whereas the working medium container comprises an outlet, which is connected via at least one line to the first working medium connection for conveying the working medium, and moreover one inlet, which is connected via at least one line to the second working medium connection for conveying the working medium; and
wherein the working medium container consists of at least two housing parts, which are assembled along at least one parting line;
wherein the at least two housing parts enclose the working medium storage volume, the at least two housing parts including a first housing part and a second housing part;
wherein the first housing part forms simultaneously a portion of a retarder housing, wherein the retarder housing comprises a plurality of parts and carries the stator and forms all or a portion of the connection for conveying the working fluid between the working medium storage volume and the working chamber at least partially;
wherein a separating plate is inserted between the first housing part and the second housing part, wherein the separating plate forms one or more cavities with the at least two housing parts for the working medium-conducting connections and/or the working medium storage volume.

2. The hydrodynamic retarder according to claim 1 , wherein the retarder comprises a heat exchanger, and wherein one or more of the at least two housing parts form a connection for conveying the working medium between the working chamber and a heat exchanger inlet of the heat exchanger and/or form a connection for conveying the working medium between a heat exchanger outlet of the heat exchanger and the working medium storage volume.

3. The hydrodynamic retarder according to claim 2 , wherein the heat exchanger is connected to the one or more of the at least two housing parts from the outside and in particular is carried by the one or more of the at least two housing parts.

4. The hydrodynamic retarder according to claim 3 , wherein one of the at least two housing parts forms at least a connection for a control pressure application system and at least one line for a control pressure medium for operating the working medium storage volume with a control pressure.

5. The hydrodynamic retarder according to claim 4 , wherein a working medium separator, formed by one of the at least two housing parts or inserted in said one of the at least two housing parts, is provided in said at least one line for the control pressure medium.

6. The hydrodynamic retarder according to claim 2 , wherein one of the at least two housing parts forms at least a connection for a control pressure application system and at least one line for a control pressure medium for operating the working medium storage volume with a control pressure.

7. The hydrodynamic retarder according to claim 6 , wherein a working medium separator, formed by one of the at least two housing parts or inserted in said one of the at least two housing parts, is provided in said at least one line for the control pressure medium.

8. The hydrodynamic retarder according to claim 2 , wherein the retarder housing comprises at least one second portion connected to one of the at least two housing parts, which encloses the rotor.

9. The hydrodynamic retarder according to claim 2 , wherein at least one seal is mounted between the first housing part and the second housing part, for sealing individual cavities relative to one another.

10. The hydrodynamic retarder according to claim 9 , wherein the separating plate comprises said at least one seal.

11. The hydrodynamic retarder according to claim 1 , wherein one of the at least two housing parts forms at least a connection for a control pressure application system and at least one line for a control pressure medium for operating the working medium storage volume with a control pressure.

12. The hydrodynamic retarder according to claim 11 , wherein a working medium separator, formed by one of the at least two housing parts or inserted in said one of the at least two housing parts, is provided in said at least one line for the control pressure medium.

13. The hydrodynamic retarder according to claim 1 , wherein the retarder housing comprises at least one second portion connected to one of the at least two housing parts, which encloses the rotor.

14. The hydrodynamic retarder according to claim 1 , wherein at least one seal is mounted between the first housing part and the second housing part, for sealing individual cavities relative to one another.

15. The hydrodynamic retarder according to claim 14 , wherein the separating plate comprises said at least one seal.

16. The hydrodynamic retarder according to claim 1 , wherein the parting line runs more or less vertically in mounting position of the hydrodynamic retarder and/or is arranged exclusively in a separation plane, which runs vertically and in particular the separating plate also runs inside or parallel to the parting line or to the separation plane.

17. The hydrodynamic retarder according to claim 1 , wherein the at least two housing parts are obtained by casting, in particular in a single working step, a single tool and/or a single machine.

18. The hydrodynamic retarder according to claim 1 , wherein the at least two housing parts are produced in a pressure casting process, in particular of aluminum or an aluminum alloy.

19. A method for manufacturing the hydrodynamic retarder according to claim 1 , the method comprising: producing the first housing part and the second housing part of the working medium container in a pressure casting process.

20. The method according to claim 19 further comprising: producing the plurality of parts of the retarder housing in the pressure casting process.

Assignees

• Voith Patent Gmbh

Inventors

• Laukemann Dieter

Classifications

• B60T10/02

  with hydrodynamic brake · CPC title

• B22D18/00

  Pressure casting; Vacuum casting (B22D17/00 takes precedence; treating the metal in the mould by using pressure or vacuum B22D27/00) · CPC title

• F16D65/78 Primary

  Features relating to cooling · CPC title

• B60T1/087

  in hydrodynamic, i.e. non-positive displacement, retarders · CPC title

• F16D57/04 Primary

  with blades causing a directed flow, e.g. Föttinger type · CPC title