CN106948900A - Casing member with integrated heat exchanger - Google Patents

Abstract

The invention relates to a device (V), in particular an oil sump, preferably for an engine and/or transmission arrangement. The device (V) comprises a housing element (1) for forming a side wall structure (1.1) and for containing an operating fluid, and comprises a heat exchanger (2) for exchanging heat with the operating fluid, said heat exchanger Can be supplied with a temperature control fluid and has a heat exchange element (1.2). The heat exchange element (1.2) forms at least one throughflow conduit (B) for the throughflow of an operating fluid, and at least one throughflow conduit (T) for the throughflow of a temperature control fluid.

Description

Housing elements with integrated heat exchanger

technical field

The invention relates to a housing element for operating fluids, in particular oil, with an integrated heat exchanger.

Background technique

Especially in the case of modern engines, the oil (engine/lubricating oil) is subjected to a somewhat high pressure from the extremely high temperatures which are imposed especially on "equipment-driven engines" running continuously at maximum power. For economic reasons, the oil is generally cooled by means of standard coolers. To the extent that they are implemented in conventional sizes, standard coolers are limited in cooling capacity. That is, the oil temperature can be reduced to only a limited extent. As a result, the life of the oil is shortened. Secondary standard coolers or larger capacity coolers are generally not desirable for economical or design reasons. DE 3142327 A1 already discloses an oil sump for a combustion engine with an inner shell and an outer shell, between which the coolant for the combustion engine flows.

Contents of the invention

It is an object of the present invention to provide an improved and/or alternative arrangement for containing an operating fluid, said arrangement comprising a heat exchanger.

This object is achieved by means of the features of the main claim. Advantageous developments of the invention can be found in the dependent claims and in the following description of preferred embodiments of the invention.

The invention provides a device, in particular an oil sump, preferably for an engine (for example a combustion engine or an engine driven by equipment), a piston machine and/or a transmission arrangement. The device comprises a housing element for forming the side wall structure and for containing an operating fluid, such as oil, especially engine and/or lubricating oil, and a heat exchanger for exchanging heat with the operating fluid, said heat exchanging The tank can be supplied with a temperature control fluid (eg, water) and has a heat exchange element.

The device is particularly characterized in that the heat exchange element forms at least one throughflow conduit for the throughflow of the operating fluid, expediently at the top, and at least one throughflow conduit for the throughflow of the temperature control fluid, expediently at the bottom. The heat exchange element is thus expediently integrated into the housing element, thus enabling an additional temperature control of the operating fluid in a cost- and/or space-friendly manner.

It is possible that the heat exchange element forms part, preferably a bottom part, of the housing element, with the result that in particular the heat exchange element and the housing element are formed from one and the same component. Thus, the heat exchange element and the housing element are preferably not mounted one on top of the other, but form a one-piece integrated component. The housing element itself thus expediently forms the heat exchange element.

It is possible that the heat exchange element comprises a plurality of throughflow conduits for the operating fluid and/or a plurality of throughflow conduits for the temperature control fluid.

The heat exchange element preferably comprises a corrugated and/or undulating structure, with the result that, on the one hand, at least one throughflow duct for the operating fluid is expediently formed towards the top, and/or, on the other hand, for the temperature control fluid. Expediently at least one throughflow duct is formed towards the bottom. For example, the relief structure may be undulating, expediently having rounded portions, or generally rectangular, trapezoidal, zigzag, etc. For example, it is possible that the cross section of the at least one throughflow conduit for the operating fluid and/or the cross section of the at least one throughflow conduit for the temperature control fluid is of approximately U-shaped, approximately rectangular or approximately trapezoidal configuration.

The throughflow conduit for the operating fluid preferably extends adjacent to and parallel to the throughflow conduit for the temperature control fluid. Alternatively or in addition, the through-flow ducts for the operating fluid and the through-flow ducts for the temperature-controlling fluid may overlap (for example, alternately), expediently laterally, with the particular result that it is possible to form Fluid flow conduits and multiple sandwich structures for temperature control fluid flow conduits.

It is possible that at least one opening, expediently at least one lower opening, is formed in the housing element, via which at least one opening the operating fluid can be supplied to the at least one throughflow duct for the operating fluid. The openings are preferably used for supplying the operating fluid to a plurality of throughflow conduits for the operating fluid.

The bottom element is preferably arranged within the housing element, in particular above the heat exchange element. The bottom element is expediently arranged between the side wall structures and is preferably mounted or cast onto the side wall structures.

It is possible that the bottom element at least partially spans at least one throughflow duct for the operating fluid. Here, the bottom element can be in contact with the heat exchange element or extend at a distance therefrom. Alternatively or in addition, the bottom element can be kept spaced apart from the housing element, in particular the side wall structure, at the end, whereby at least one opening is formed. It is also possible that at least one opening is machined into the bottom element. For example, the at least one opening can be designed as a hole, slotted hole, aperture or the like.

The bottom element is therefore preferably used for partial separation and partial formation of the operating fluid passage between the upper section of the housing element and the heat exchange element.

The bottom element may be mounted (eg movably, expediently slidably) within the housing element, making it possible to close the at least one opening and/or to form a A bypass opening such that the operating fluid can expediently be discharged from the housing element or more generally the device while bypassing at least one throughflow conduit for the operating fluid. Thus, if the bottom element moves, expediently slides, it is thereby possible to close at least one opening on the one hand and simultaneously create a bypass opening on the other hand. Thereby it is possible to achieve an operating point dependent temperature control capability for the engine, piston machine and/or transmission arrangement. For example, if the engine is running at part load point, it will be possible to dispense with the extra temperature control capability of the heat exchanger and discharge the temperature control fluid via a bypass, thereby allowing the temperature control capability to be reduced.

It is possible that the heat exchanger has a bottom closure element, and preferably the heat exchange element extends between the bottom closure element and the bottom element. It follows that the heat exchanger is formed of parts, expediently of at least three preferably approximately horizontally aligned parts extending one above the other, namely the bottom element, the heat exchange element and the bottom closure element.

It should be mentioned that the bottom element and/or the bottom closure element are preferably produced substantially flat and/or plate-shaped.

It is possible for the bottom element and/or the bottom closing element to be cast or mounted, eg adhesively joined, welded, etc., the former expediently on the inner side and the latter expediently on the outer side, to the housing element.

For example, the housing elements may be aluminum and/or cast housing elements.

The housing element is preferably embodied in the form of a groove.

A temperature control fluid can be used to cool or heat the operating fluid.

The at least one throughflow line for the operating fluid and/or the at least one throughflow line for the temperature control fluid preferably runs in the form of a tube or channel.

The present invention also includes an engine, in particular a vehicle engine (eg motor vehicle engine, marine engine, bus or heavy goods vehicle engine, etc.) or equipment driven engine, transmission arrangement or piston machine having a device as disclosed herein .

The invention furthermore encompasses a commercial vehicle, eg a heavy goods vehicle or a bus, having an engine, piston machine and/or transmission arrangement provided with a device as disclosed herein.

Description of drawings

The above-described preferred embodiments and features of the invention can be combined with each other. Further advantageous developments of the invention are disclosed in the dependent claims or will become apparent from the following description of preferred embodiments of the invention together with the drawings.

Figure 1 shows a perspective cross-sectional view of a device according to one embodiment of the invention,

Figure 2 shows another perspective cross-sectional view of the device in Figure 1, and

Figure 3 shows a cross-sectional view of the device in Figures 1 and 2 illustrating in detail its operation.

parts list

1 housing element

1.1 Side wall structure

1.2 Heat Exchange Elements

1.3 At least one opening

2 heat exchangers

3 Bottom elements

4 Bottom closing element

5 water outlet

6 water inlet

7 oil outlet

8 Bypass opening

B Flow conduit for operating fluids, especially oil

T A through-flow conduit for temperature-controlled fluids, especially water.

detailed description

Figure 1 shows a perspective cross-sectional view of a device V (ie oil sump) for an engine (not shown), piston machine (not shown) and/or transmission arrangement (not shown).

The oil sump comprises a housing element 1 for forming a side wall structure 1.1 and for containing an operating fluid, in particular oil, and a heat exchanger 2 . The heat exchanger 2 can be supplied with a temperature control fluid, eg water, and comprises a heat exchange element 1.2, by means of which heat exchange between oil and water can be achieved.

The heat exchange element 1.2 comprises a plurality of throughflow conduits B, through which oil flows during operation, and a plurality of throughflow conduits T, through which water flows during operation. Oil may be drawn in by the engine or the oil pump, for example during operation.

The heat exchange element 1.2 forms a (bottom) part of the housing element 1, with the result that the heat exchange element 1.2 and the housing element 1 are formed from one and the same component. The oil sump and in particular the housing element 1 are therefore provided with an integrated heat exchanger 2 .

The heat exchange element 1.2 comprises an undulating structure, in particular a wave shape (for example, circular, rectangular, trapezoidal, etc.), whereby a throughflow duct B for oil is formed on its upper side, and a flow duct B for water on its lower side. Throughflow conduit T. The undulating structure results in an enlarged surface area, which greatly increases the effectiveness of the heat exchanger 2 .

The throughflow conduit B for oil runs parallel to the throughflow conduit T for water and is arranged adjacent thereto. Throughflow conduits T for water and throughflow conduits B for oil overlap alternately, forming a plurality of sandwich structures.

An opening 1.3 is formed in the housing element 1, expediently in the form of a slotted hole, through which oil can be supplied to the throughflow duct B for oil.

Furthermore, a plate-shaped base element 3 is arranged within the housing element 1 . The bottom element 3 spans the throughflow conduit B towards the top and is spaced at the end from the housing element 1 , thereby forming an opening 1 . 3 . The bottom element 3 is expediently in contact with oil on the upper and lower sides.

The heat exchanger 2 comprises a plate-shaped bottom closing element 4 , with the result that the heat exchange element 1 . 2 is arranged between the bottom closing element 4 and the bottom element 3 . The heat exchanger 2 is thus expediently formed by a 3-plate structure, ie a bottom element 3 , a corrugated heat exchange element 1 . 2 and a bottom closing element 4 .

The bottom element 3 and the bottom closure element 4 are expediently mounted on the housing element 1 .

Reference numeral 5 designates a water outlet via which water can be discharged from the device V or the heat exchanger 2 .

FIG. 2 shows another perspective sectional view of the device V from FIG. 1 .

Therein, reference numeral 6 designates a water inlet via which water can be introduced into the device V or heat exchanger 2, and reference numeral 7 designates an oil outlet via which oil can flow from the housing element 1 or the heat exchanger 2. Heater 2 discharge.

Fig. 3 shows a cross-sectional view of the device V of Figs. 1 and 2 with a legend relating to its operation.

It can be seen from FIG. 3 that the oil passes through the throughflow conduit B for cooling from right to left in FIG. 3 , while the water passes through the throughflow conduit T for heating from left to right in FIG. 3 .

It is possible that the bottom element 3 is mounted in the housing element 1 in a fixed manner. Alternatively, however, it is possible that the bottom element 3 is expediently arranged in the housing element 1 in such a way that it can slide approximately horizontally. If the bottom element 3 is implemented in such a way as to be slidable, it is possible that, on the one hand, the opening 1.3 is closed and, on the other hand, the bypass opening 8 indicated schematically in FIG. 3 is simultaneously slid by it produced, allowing the oil to drain while bypassing flow conduit B. Thereby, it is possible to reduce the heat exchanger capacity. The cooling capacity may thus vary according to the engine operating point. For example, if the engine is run at part load point, it will be possible to dispense with heat exchanger cooling and water can drain through the bypass opening 8 .

The invention is not restricted to the preferred embodiments described above. On the contrary, numerous variations and modifications are possible, which likewise utilize the idea of the invention and thus fall within the scope of protection. Furthermore, the invention also claims to protect the subject-matter and features of the dependent claims independently of their features and the claims to which they depend.

Claims (15)

1. A device (V), preferably for an engine, piston machine and/or transmission arrangement, in particular an oil sump, having a housing element (1) for forming a side wall structure (1.1) and for containing an operating fluid ), and has a heat exchanger (2) for heat exchange with the operating fluid, which can be supplied with a temperature control fluid and has a heat exchange element (1.2), characterized in that the heat exchange element (1.2) At least one throughflow conduit (B) for throughflow of the operating fluid, and at least one throughflow conduit (T) for throughflow of the temperature control fluid are formed. 2. The device (V) according to claim 1, characterized in that the heat exchange element (1.2) is part of the housing element (1), with the specific result that the heat exchange element (1.2) Formed from the same component as the housing element (1). 3. The device (V) according to claim 1 or claim 2, characterized in that the heat exchange element (1.2) comprises a plurality of throughflow conduits (B) for the operating fluid, and preferably A plurality of flow conduits (T) for said temperature control fluid. 4. The device (V) according to one of the preceding claims, characterized in that the heat exchange element (1.2) comprises a corrugated or undulating structure, as a result of which, on the one hand, a channel for the operating fluid is formed Said at least one throughflow conduit (B) and on the other hand said at least one throughflow conduit (T) for said temperature control fluid. 5. The device (V) according to one of the preceding claims, characterized in that the throughflow conduit (B) for the operating fluid is at the same time as the throughflow for the temperature control fluid Extends adjacent to and parallel to the conduit (T). 6. The device (V) according to one of the preceding claims, characterized in that the throughflow conduit (B) for the operating fluid and the throughflow for the temperature control fluid The conduits (T) alternately overlap. 7. The device (V) according to one of the preceding claims, characterized in that at least one opening (1.3) is formed in the housing element (1 ), via which an operating fluid can pass ( 1.3) Supply to said at least one throughflow conduit (B) for said operating fluid. 8. The device (V) according to one of the preceding claims, characterized in that a bottom element (3) is arranged above the heat exchange element (1.2), preferably inside the housing element (1) Between the side wall structures (1.1). 9. The device (V) according to claim 8, characterized in that said bottom element (3) at least partially spans said at least one throughflow duct (B) for said operating fluid. 10. The device (V) according to claim 8 or claim 9, characterized in that the bottom element (3) is spaced at the ends from the housing element (1 ) so as to form the at least An opening (1.3), or said at least one opening (1.3), is formed in said bottom element (3). 11. Device (V) according to one of claims 8 to 10, characterized in that the bottom element (3) can preferably be moved, in particular slid, in order to close the at least one opening (1.3) and/or so as to form a bypass opening (8) such that operating fluid can be discharged while bypassing said at least one throughflow conduit (B) for said operating fluid. 12. The device (V) according to one of the preceding claims, characterized in that the heat exchanger (2) has a bottom closing element (4) and that the heat exchange element (1.2) is preferably in the extending between said bottom closing element (4) and said bottom element (3). 13. The device (V) according to one of claims 8 to 11, characterized in that the bottom element (3) and/or the bottom closure element (4) is cast or mounted to the on the housing element (1). 14. An engine, piston machine or transmission arrangement having a device (V) according to one of the preceding claims. 15. A commercial vehicle having an engine, piston machine or transmission arrangement according to claim 14.