WO2013178299A1

WO2013178299A1 - Filter device, and method for producing a filter device

Info

Publication number: WO2013178299A1
Application number: PCT/EP2013/000322
Authority: WO
Inventors: Sergej LLINZEER; Matthias Amend; Jürgen Schneider; Ulrich Eppensteiner; Tibor SIMON
Original assignee: Robert Bosch Gmbh
Priority date: 2012-05-30
Filing date: 2013-02-01
Publication date: 2013-12-05
Also published as: DE102012010718A1

Abstract

The invention relates to a filter device (10) for filtering a transmission oil. The filter device (10) comprises a filter unit (3) which has a receiving opening and a dispensing opening for the transmission oil. The filter device (10) further comprises a pressure relief plate (1) which is designed to receive the transmission oil from an outlet of a pump (2) and to conduct the transmission oil to the receiving opening of the filter unit (3). The pressure relief plate (1) is further designed to ensure a seal between an outlet of the pump (2) and the receiving opening of the filter unit (3). The pressure relief plate can also perform the function of a pressure-limiting valve, protecting the downstream components, i.e. the filter, cooler, pipes, etc., from overpressure and the potential damage resulting therefrom. The filter device (10) also comprises a temperature regulating unit (4) which is designed to receive the transmission oil from the dispensing opening of the filter unit (3) and to dispense the transmission oil at a first temperature regulating unit outlet (4a) if the transmission oil is at a higher temperature and at a second temperature regulating unit outlet (4b) if the transmission oil is at a lower temperature. The filter device (10) finally comprises a single-piece housing (5) in which the filter unit (3), the pressure relief plate (1), and the temperature regulating unit (4) are arranged.

Description

Filter device and method for producing a filter device

The present invention relates to a filter device and to a method of manufacturing a filter device according to the main claims.

In pump-filter-cooling applications for lubrication, cooling and filtering of gearboxes in wind turbines has been a laborious and costly installation of a filter for a transmission oil circuit required so far. Also, if necessary, temperature controls and secure attachment of the filter to the pump had to be ensured.

It is the object of the present invention to provide an improved filter device and an improved method of manufacturing a filter device. This object is achieved by a filter device and by a method for producing a filter device according to the main claims.

The present invention provides a filter device for filtering a transmission oil, the filter device having the following features:

a filter unit having a receiving opening and a discharge opening for the transmission oil;

a pressure securing plate configured to receive the transmission oil from an outlet of a pump and to pass it to the receiving opening of the filter unit, the pressure securing plate being further configured to seal between an outlet of the pump and the receiving opening of the filter unit and / or

To ensure pressure relief of an inlet pressure at the receiving opening of the filter unit;

a temperature control unit configured to separate the transmission oil from the

To pick up the discharge opening of the filter unit and at a higher temperature of the Gearbox oil at a first temperature control unit output and at a lower temperature of the transmission oil to a second

Output temperature control unit output, and

a one-piece housing in which the filter unit, the pressure securing plate and the temperature control unit are arranged.

Furthermore, the present invention provides a method for producing a filter device, the method comprising the following steps:

Providing a one-piece housing,

the filter unit having a receiving opening and a discharge opening for the transmission oil,

the pressure-securing plate configured to receive the transmission oil from an outlet of a pump and to forward it to the receiving opening of the filter unit, the pressure-securing plate being further configured to ensure a seal between an outlet of the pump and the receiving opening of the filter unit, and

the temperature control unit, which is adapted to the transmission oil of the

Pick up the discharge port of the filter unit and deliver at a higher temperature of the transmission oil at a first temperature control unit output and at a lower temperature of the transmission oil at a second

Output temperature control unit output;

Attaching the filter unit, the pressure securing plate and the temperature control unit to the housing to make the filter device.

A pressure-securing plate can be understood to mean a plate which ensures a secure connection of a gearbox oil pump, which is fluid-tight with respect to the outside environment, to the filter device. Furthermore, the function of a pressure relief valve is realized by the pressure-securing plate, in which a pressure protection of the following components filter, radiator, pipes, etc. takes place against overpressure and the possible resulting damage. Under a filter unit may be a unit for filtering

Transmission oil are understood to reduce pollution in the transmission oil largely. The present invention is based on the recognition that a particularly easy to install filter device can be created by already a

one-piece housing is provided for the filter device, in which the filter unit, the pressure-securing plate for connecting the filter unit to a pump and the temperature control unit are embedded. As a result, a single component can already be made to the pump before installation, so that the assembly of the filter unit is much easier than if the individual components would have to be connected to the pump or the transmission oil circuit one after the other. Also, by the one-piece housing a very secure connection between the placed therein

Deliver components as this can already be ensured leakage of gear oil into the environment. Compared to the conventional approaches, namely to connect individual plates or components separately to the transmission oil circuit, the approach presented here offers a space-optimized, versatile and cost-effective solution for coupling the filter unit, the pressure-securing plate and the temperature control unit.

Also favorable is an embodiment of the present invention, wherein the housing at least partially as a metal housing, in particular partially as a

Cast metal housing is designed. Such an embodiment offers the advantage of a particularly easy to manufacture housing. The oil protects the metal from corrosion.

Also, according to an embodiment of the present invention, the housing may at least partially comprise plastic material. Such an embodiment of the present invention offers the advantage that the housing can be produced inexpensively and very flexibly for the respective application.

According to another embodiment of the present invention, the

Filter device further comprising a radiator with the first

Temperature control unit output is connected. Under a cooler, a unit can be understood, which is designed to cool transmission oil. Such

Embodiment of the present invention has the advantage of an integrated filter-cooler unit, so that a mounting is very easy, without the components to be connected would be complicated to be coupled together when manufacturing the transmission oil circuit. At the same time it can be ensured that the transmission oil is protected against overheating. Also advantageous is an embodiment of the present invention, in which a transmission oil feed unit is provided which has the following features:

a filter device according to a variant presented here; and

a pump which is attached adjacent to the pressure securing plate.

Also by such an embodiment of the present invention, a unit for securing a transmission oil circuit can be provided, which can be manufactured very simply and thus inexpensively.

The invention will now be described by way of example with reference to the accompanying drawings. Show it:

Fig. 1 is a perspective view of an embodiment of the present invention

Invention as a filter device; and

Fig. 2 is a flowchart of an embodiment of the present invention as

Method for producing a filter device according to an embodiment of the invention.

The same or similar elements may be provided in the following figures by the same or similar reference numerals. Furthermore, the figures of the drawings, the description and the claims contain numerous features in combination. It is clear to a person skilled in the art that these features are also considered individually or that they can be combined to form further combinations not explicitly described here.

Fig. 1 shows a perspective view of an embodiment of the present invention as a filter device. In this case, the filter device 10 comprises a

Pressure backup plate 1, which serves as a connection plate for conducting a transmission oil from a pump 2 to a filter unit 3. The pressure-securing plate is designed with at least one (shown in dark in Fig. 1) transmission oil passage in which the

Transmission oil is transferred from the pump 1 in the filter unit 2. The pressure-securing plate is further provided with a sealing element (not shown in FIG Leakage of the gear oil from the pressure-securing plate, or a contact point between the pump 1 and the pressure-securing plate 2 prevented. The pressure-securing plate also ensures a function of a pressure-limiting valve in the pressure protection for the following components filter, radiator, pipes, etc., so that they

Components are protected against overpressure and any resulting damage. Furthermore, the filter device 10, the filter unit 3, which with the

Pressure backup plate 1 is connected such that the transmission oil from the

Pressure backup plate 1 in filter channels of the filter unit 3, which are not shown in FIG. 1, is introduced. In the filter unit or the filter channels, the transmission oil is then cleaned of dirt particles, which have arisen, for example, by abrasion during the movement of two of transmission elements in the transmission and are in the transmission oil. The filter unit 3 thus ensures that the transmission oil is not getting thicker and dirtier with increasing operating time of the transmission and will ultimately lose its function. Furthermore, the filter device 10 has a temperature control unit 4 which is fluidically coupled to the filter unit 2 in such a way that the cleaned or filtered

Transmission oil from the filter unit 2 in the temperature control unit 4 passes. The

Temperature control unit 4 serves to monitor the temperature of the transmission oil. This means, for example, that the transmission oil is at a temperature that is a

Temperature threshold exceeds, is output at a first output 4a, and the transmission oil, which does not exceed the temperature threshold, is output at the second output 4b. At this time, all the transmission oil supplied to the temperature control unit 4 is output at the first output 4a when it exceeds the threshold temperature or completely discharged at the second output 4b, if it is the

Threshold temperature does not exceed. At one of the outputs of the temperature control unit 4 is mounted (at the auspiciously the hotter gear oil is output), not shown in FIG. 1 radiator, so that the transmission oil can then be cooled before it again (also not asked in FIG ) Transmission is supplied. If the temperature of the transmission does not exceed the threshold temperature, cooling of the

Avoid transmission oil.

The filter device 10 now comprises a housing 5, which is manufactured in one piece and which accommodates the pressure-securing plate 1, the filter unit 3 and the temperature control unit 4. This housing 5 is, for example, at least partially, preferably completely made of metal or cast metal. Such a housing 5 can be easily produced on the one hand and is thus cost and secondly, such a housing may also have a high thermal and chemical stability to hot gear oil. At the same time can be created by the one-piece housing which accommodates said units, a compact unit, which is very easy to assemble in the subsequent installation in the transmission oil circuit. In this way, a connection of the transmission with the

Filter device done in a very simple and cost-effective manner. Alternatively or additionally, the housing 5 are at least partially made of plastic, for example, also in certain embodiments, which can be realized by a metal housing very difficult to be produced inexpensively. Also, by choosing a particular plastic material is a very flexible choice of

Housing material in relation to the gear oil possible, in particular with respect to a chemical resistance.

If the filter unit 4 can not be accommodated completely in the housing 5, a part can also be accommodated in a filter housing 6 to be fastened separately to the housing. Alternatively, the filter bell 6 can be accommodated in a bulge of the housing 5, if it is already obvious that a large filter unit 4 is required with a filter bell for filtering the transmission oil. Furthermore, the filter device 10 comprises a pressure relief valve 7, the one generated by the pump 2 overpressure of the transmission oil via a tank connection 8 directly to

Transmission output or to the pump input conducts. In this way it can be ensured that no transmission oil with too high a pressure passes through the pressure-securing plate 1 into the filter unit 3 or the components arranged downstream of the filter unit 3 in the direction of flow of the gearbox oil.

2 shows a flow chart of an embodiment of the present invention as a method 20 for producing a filter device according to an embodiment of the invention. In this case, the method 20 for producing a filter device comprises a step 21 providing a one-piece housing and one of the filter unit, which has a receiving opening and a discharge opening for the transmission oil. In the step of providing 21, there is further provided a pressure-securing plate configured to receive the transmission oil from an outlet of a pump and to forward it to the receiving opening of the filter unit, the pressure-securing plate being further configured to a seal between an outlet of the pump and the receiving opening of the

Ensure filter unit. Also, in the step of providing 21, a

Temperature control unit is provided which is adapted to receive the transmission oil from the discharge opening of the filter unit and deliver at a higher temperature of the transmission oil at a first temperature control unit output and deliver at a lower temperature of the transmission oil at a second temperature control unit output. The method 20 further includes a step of attaching 22 the filter unit, the pressure-securing plate, and the temperature control unit to the housing to make the filter device.

The exemplary embodiments shown are chosen only by way of example and can be combined with one another.

Refill list 1 Pressure fuse plate

2 pump

3 filter unit

4 temperature control unit

4a first temperature control unit output 4b second temperature control unit output

5 housing

6 filter bell

7 pressure relief valve

8 tank connection

10 filter device

20 Method of manufacturing a filter unit 21 Provision step

22 step of fixing

Claims

claims

A filtering apparatus (10) for filtering a transmission oil, the filtering apparatus (10) comprising:

a filter unit (3) having a receiving opening and a discharge opening for the transmission oil;

a pressure securing plate (1) adapted to receive the transmission oil from an outlet of a pump (2) and to pass it to the receiving opening of the filter unit (3), the pressure securing plate (1) being further adapted to seal between an outlet of the filter unit Ensure pump (2) and the receiving opening of the filter unit (3);

a temperature control unit (4) configured to receive the transmission oil from the discharge port of the filter unit (3) and deliver at a higher temperature of the transmission oil to a first temperature control unit output (4a) and at a lower temperature of the transmission oil at a second temperature control unit output (4b ) and

a one-piece housing (5) in which the filter unit (3), the

Pressure backup plate (1) and the temperature control unit (4) are arranged.

2. Filter device (109 according to claim 1, characterized in that the

Housing (5) is at least partially designed as a metal housing, in particular partially as a metal casting housing.

3. Filter device (10) according to one of the preceding claims, characterized

characterized in that the housing (5) at least partially comprises plastic material.

4. Filter device (10) according to one of the preceding claims, characterized

characterized in that the filter device (10) further comprises a radiator connected to the first temperature control unit output (4a). Transmission oil feed unit (10, 2) with the following features:

a filter device (10) according to one of the preceding claims; and a pump (2) mounted adjacent to the pressure-securing plate (1).

Method (20) for producing a filter device, the method comprising the following steps:

Providing (21) a one-piece housing,

the pressure securing plate, which is adapted to receive the transmission oil from an outlet of a pump and to the receiving opening of the

Forward filter unit, wherein the pressure-securing plate is further formed to a seal between an outlet of the pump and the

To ensure the receiving opening of the filter unit, and

the temperature control unit configured to receive the transmission oil from the discharge port of the filter unit and deliver it at a higher temperature of the transmission oil to a first temperature control unit output and at a lower temperature of the transmission oil to a second one

Output temperature control unit output;

Fasten (22) the filter unit, the pressure securing plate and the

Temperature control unit on the housing to produce the filter device.