PRODUCTION METHOD FOR PRODUCING A HEAT EXCHANGER ASSEMBLY AND HEAT EXCHANGER ASSEMBLY FOR COOLING AND/OR HEATING A HEAT EXCHANGER FLUID

Abstract

A production method for producing a heat exchanger assembly, which may serve for at least one of cooling and heating a functional component via a heat exchanger fluid, may include first providing a duct flat body, which may have a flow duct comprising a clear flow cross section, through which heat exchanger fluid may be flowable. The method then may include forming the duct flat body as part of a rolling process or as part of a roller burnishing process to form a bent cylinder jacket-shaped heat exchanger housing. The method then may include arranging the bent heat exchanger housing on a jacket surface of the functional component, and fixing the heat exchanger housing on the jacket surface of the functional component.

Claims

1. A production method for producing a heat exchanger assembly, which serves for at least one of cooling and heating a functional component via a heat exchanger fluid, comprising: providing a duct flat body, which has a flow duct comprising a clear flow cross section, through which heat exchanger fluid is flowable; forming the duct flat body as part of a rolling process or as part of a roller burnishing process to form a bent cylinder jacket-shaped heat exchanger housing; arranging the bent heat exchanger housing on a jacket surface of the functional component and fixing the heat exchanger housing on the jacket surface of the functional component.

2. The production method according to claim 1, comprising: connecting at least two plate flat bodies via a substance-to-substance bond to form the duct flat body.

3. The production method according to claim 2, comprising: arranging bead bodies or pin bodies of a functional structuring on at least one of the plate flat bodies prior to connecting the at least two plate flat bodies.

4. The production method according to claim 1, wherein the rolling process is a roll bending method.

5. The production method according to claim 4, wherein the roll bending method includes: clamping the duct flat body between a rolling roller pair; and moving the duct flat body bidirectionally so as to bend the duct flat body into a circular or ring-like cylinder jacket-shaped heat exchanger housing by maintaining a clear flow cross section.

6. The production method according to claim 5, wherein the rolling roller pair comprises two or more rolling rollers for bending the duct flat body, wherein each rolling roller has a rolling roller diameter, and wherein the rolling roller diameter of a first of the rolling rollers is larger than the rolling roller diameter of a second of the rolling rollers.

7. A production method for producing a heat exchanger assembly, which serves for at least one of cooling and heating a functional component via a heat exchanger fluid, comprising: providing at least a first base plates and a second base plate, wherein: the first base plate, which is designed to be planar, comprises a first base plate large surface and a second base plate large surface, which is oriented opposite thereto; and the second base plate comprises a third base plate large surface and a fourth base plate large surface oriented opposite thereto, wherein the second base plate has a functional structuring, which comprises pin bodies, which are arranged on the second base plate or on one of the third base plate large surface or the fourth base plate large surfaces, and the second base plate has a joint frame web, which surrounds the functional structuring in a frame-like manner; placing the first and second base plates one on top of one another, so that the first or second base plate large surface of the first base plate rests against at least one of (i) the pin bodies of the functional structuring and (ii) a joint mounting surface of the joint frame web with contact and by forming an intermediate gap; connecting the first and second base plates, which are located one on top of one another, via a substance-to-substance bond as part of a soldering method to form a base plate intermediate component, wherein the first and second base plates are connected to one another along the joint mounting surface by forming a flow duct, wherein the intermediate gap defines a clear flow cross section; arranging a fluid supply port assembly, which communicates fluidically with the flow duct, on the base plate intermediate component as part of a soldering method so as to provide a duct flat body; forming the duct flat body as part of a rolling method, wherein the duct flat body is clamped between a rolling roller pair; bidirectionally moving the duct flat body between rolling rollers of the rolling roller pair, so that the duct flat body is bent; and repeating the bidirectional moving of the duct flat body until the duct flat body at least one of (i) is bent to be essentially cylinder jacket-shaped and (ii) has a circular ring-shaped cross section, based on a main expansion direction of the duct flat body, so that a cylinder jacket-shaped heat exchanger housing is formed.

8. The production method according to claim 7, further comprising applying the cylinder jacket-shaped heat exchanger housing against the functional component, and fixing the cylinder jacket-shaped heat exchanger housing to a cylinder jacket surface of the functional component, so as to ensure a heat energy transfer from the functional component to a heat exchanger fluid, which flows through the heat exchanger housing.

9. The production method according to claim 7, wherein pin bodies of the functional structuring are additionally arranged on the first base plate or on one or on both of the first and second base plate large surfaces of the first base plate.

10. The production method) according to claim 7, wherein: at least one clamping devices is arranged on the base plate intermediate component or on the bent duct flat body for fixing the bent duct flat body to a jacket surface of the functional component.

11. The production method according to claim 10, wherein: each clamping device comprises at least one clamping strap, at least one screw connection, at least one hose clamp, or a spring assembly.

12. The production method according to claim 7, wherein: the bent duct flat body has two free ends, which are located opposite one another in a circumferential direction around the bent duct flat body, wherein several clamping devices are in each case arranged on the two free ends or in an area of the free ends and wherein the clamping devices are releasably clamped to one another for applying and fixing the duct flat body against the functional component.

13. A heat exchanger assembly for at least one of cooling and heating a functional component by means of a heat exchanger fluid, comprising a heat exchanger having a circular cylindrical heat exchanger housing for arrangement on a functional component, wherein the heat exchanger housing has at least one flow duct comprising a free flow cross section, through which heat exchanger fluid is flowable, wherein a functional structuring comprising a plurality of pin bodies is arranged on at least one of a first base plate and a second base plates, which form the heat exchanger housing, wherein the pin bodies at least one of protrude into the free flow cross section and rest against the respective opposite base plate with contact.

14. The heat exchanger assembly according to claim 13, wherein the functional structuring is a burl structuring, and wherein the pin bodies are each formed by burl-like hemispherical bodies or by bead bodies.

15. The production method according to claim 2, wherein the substance-to-substance bond is soldering or welding.

16. The production method according to claim 4, wherein the roll bending method is roller bending.

17. The production method according to claim 7, wherein each rolling roller has a rolling roller diameter, and wherein the rolling roller diameter of a first of the rolling rollers is larger than the rolling roller diameter of a second of the rolling rollers.

18. The production method according to claim 7, wherein the roll bending method is roller bending.

19. (canceled)

20. The production method according to claim 12, wherein the clamping devices include a spring assembly having a spring element and a spring element receptacle, wherein the spring element and the spring element receptacle are releasably clamped to one another for applying and fixing the duct flat body against the functional component.

21. The production method according to claim 1, the clear flow cross section of the duct flat body remaining continuously open during at least one of the rolling process and the roller burnishing process.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In each case schematically,

[0039] FIG. 1 shows a flow chart of the production method for producing a heat exchanger assembly comprising three steps;

[0040] FIG. 2 shows the provision of a duct flat body in a perspective view;

[0041] FIG. 3 shows a duct flat body in a top and side view;

[0042] FIG. 4 shows a further duct flat body in a top and side view;

[0043] FIG. 5 shows a further duct flat body in a top and side view;

[0044] FIG. 6 shows a side view of the rolling or roller burnishing process according to the production method;

[0045] FIGS. 7 and 8 each show a heat exchanger housing produced according to the production method, in each case in a top view;

[0046] FIG. 9 shows a perspective view of a heat exchanger assembly for cooling and/or heating by means of heat exchanger fluid.

DETAILED DESCRIPTION

[0047] As a whole, FIGS. 1 to 9 show a production method 10 for producing a heat exchanger assembly 20. Heat exchanger assemblies 20 of this type are used in particular in motor vehicles in the case of electric drive devices, in order to contribute to the reduction of the thermal stresses to the respective electric drive device.

[0048] A flow chart of the production method 10 for producing a heat exchanger assembly 20 can be seen in FIG. 1. It comprises three steps, which are each suggested in an exemplary manner by a rectangular box 11, 12, 13. A first step suggested by the box 11 comprises the provision of a duct plate body 47, through which heat exchanger fluid can flow. Subsequently, the duct flat body 47 is permanently plastically formed as part of a second step, wherein the second step is symbolized by a rectangular box 12 in FIG. 1. The forming can take place, for example, as part of a rolling process or as part of a roller burnishing process. A rectangular box 13, by means of which a third step of the production method 10 is symbolized, can further be seen in FIG. 1. As part of the third step, the formed duct flat body 47, which is now also referred to as heat exchanger housing 40, is arranged and fixed on a jacket surface 61 of a functional component 60, which is suggested in FIGS. 7 and 8.

[0049] It can be seen in FIG. 2, how two base plates 41, 42, which form the duct flat body 47 or the base plate intermediate component 47a, respectively, are placed one on top of the other, so that they rest against one another with contact with their base plate large surfaces 43, 45. As an example, the two base plates 41, 42 are designed identically, in particular in terms of area and in terms of contour, so that they can rest one on top of the other congruently with contact. For example, the two base plates 41, 42 are each level plate flat bodies, which are not described in more detail. It cannot be seen in FIG. 2 that the two base plates 41, 42 are placed one on top of the other in such a way that an intermediate gap 52 is defined between them. The intermediate gap 52 forms an open or clear flow cross section 51, respectively, of a flow duct 50, through which heat exchanger fluid can flow.

[0050] Two base plates 41, 42, which are placed one on top of the other with contact and which form a duct flat body 47 or the base plate intermediate component 47a, respectively, are in each case also illustrated in a top and side view in FIGS. 3 to 5. In contrast to FIG. 2, however, an intermediate gap 52 and several free flow cross sections 51, in particular several flow ducts 50, can be seen in each case. It can further be seen that the second base plate 42 has a functional structuring 100.

[0051] The functional structuring 100 thereby comprises at least one and advantageously several pin bodies 101 and/or bead bodies 102, which are each arranged on the second base plate 42 and protrude into the intermediate gap 52 or the free flow cross sections 51, respectively, of the flow duct 50. A joint frame web 55, which surrounds the functional structuring 100 in a frame-like manner, is further arranged on the second base plate 42. The joint frame web 55 has, for example, a joint mounting surface 48, with which the second base plate 42 can rest against the first base plate 41 with contact. In this case, the first base plate 41 is designed to be level or planar, in particular unbent. For example, the pin bodies 101 and/or the bead bodies 102 of the functional structuring 100 rest against the first base plate 41 with contact. It can further be seen according to FIG. 3 to FIG. 5 that a fluid supply port assembly 56 is connected to the two base plates 41, 42, the fluid supply port assembly 56 is soldered or welded or adhered, for example, to one or to both base plates 41, 42. The fluid supply port assembly 56 is preferably connected to one or all flow ducts 50 so as to communicate therewith in any case, so that heat exchanger fluid can be provided to one or all flow ducts 51 by means of a non-illustrated fluid supply device via the fluid supply port assembly 56. As an example, the fluid supply port assembly 56 has two fluid supply ports 57, which are oriented parallel to one another. The fluid supply ports 57 or the fluid supply port assembly 56 in each case advantageously define an axial port longitudinal axis 58 along their respective main expansion direction.

[0052] It should be added that, according to FIGS. 3 and 4, the port longitudinal axis 58 is preferably arranged orthogonally to the base plate large surfaces 43, 45 of the two base plates 41, 42, so that a right angle is quasi spanned between the port longitudinal axis 58 and a plate plane of the base plates 41, 42. The fluid supply port assembly 56 and/or the fluid supply ports 57 are thereby advantageously arranged on a longitudinal front side of the two base plates 41, 42, in particular on a long or a short longitudinal front side of the base plate 41, 42.

[0053] The base plates 41, 42, which are arranged one on top of the other, can be seen in FIG. 4, which, in contrast to FIGS. 3 and 5, each have a separate functional structuring 100, so that, as a result, several pin bodies 101 and/or several bead bodies 102 are arranged on both base plates 41, 42.

[0054] In contrast to FIGS. 3 and 4, FIG. 5 shows that a port longitudinal axis 58 of the fluid supply port assembly 56 and/or a port longitudinal axis 58 of the fluid supply ports 57 lies completely in a plate plane of the base plates 41, 42 or is arranged parallel to a plate plane. The fluid supply port assembly 56 and/or the fluid supply ports 57 are thereby advantageously arranged on a longitudinal front side of the two base plates 41, 42, in particular on a long or a short longitudinal front side of the base plates 41, 42.

[0055] FIG. 6 shows a rolling process or a roller burnishing process, respectively, which is performed as part of the production method, in a side view. The rolling process is advantageously a roll bending method 80, as part of which the use of a rolling roller pair 81 is provided.

[0056] The rolling roller pair 81 advantageously comprises at least two or more individual rolling rollers 82, 85, which can differ from one another for example in the rolling roller diameter 83, 84. According to FIG. 6, the rolling roller diameters 83, 84 are embodied with a different diameter. A duct flat body 47 can be clamped and processed between the rolling roller pair 81 in any case. Relatively high forming forces act on the duct flat body 47 when clamped in the rolling roller pair 81. If the duct flat body 47 is moved bidirectionally between the rolling roller pair 81 for a relatively long time, the duct flat body 47 transitions into a bent shape little by little. The transition of the duct flat body 47 from the level state into a round or bent state is illustrated in FIG. 6 by means of arrows and by dots between bending states of the duct flat body 47. After performing the rolling bending, the duct flat body 47 has a round, in particular a circular, completely circular or ring-like, appearance and forms a heat exchanger housing 40, which is suggested in FIG. 6 with dots in an exemplary manner.

[0057] FIGS. 7 and 8 each show a heat exchanger housing 40 produced according to the production method, in a top view. It can be seen thereby that the first and second base plate 41, 42 or the duct flat body 47, respectively, has transitioned into a shape, the cross section of which is round, in particular a completely round or circular ring-shaped shape. To arrange the heat exchanger housing 40 on a cylinder jacket surface 61 of a functional component 60, for example a stator jacket surface of an electric drive device or the jacket surface of an electric motor, a clamping device 90 is provided, which, as an example, is a spring assembly 91. It can be provided that the spring assembly 91 has a spring element 92 and one or several spring element receptacles 93, which are arranged around the duct flat body 47 on opposite free ends 53, 54 of the duct flat body 47 in a circumferential direction. The heat exchanger housing 40 can be arranged and fixed on the cylinder jacket surface 61 of the functional components 60 with the help of the spring assembly 91.

[0058] In contrast to FIG. 7, FIG. 8 shows that a functional structuring 100 can also be arranged on the first base plate 41. The pin bodies 101 and/or bead bodies 102 of the functional structuring 100 are thereby arranged on the cylinder jacket surface 61 of the functional component 60, for example by forming additional longitudinal structures 86, which, as an example, serve the purpose of cooling and/or heating a structured surface.

[0059] Lastly, a perspective view of an exemplary heat exchanger 30 of a heat exchanger assembly 20 comprising a heat exchanger housing 40 for cooling and/or heating a functional component by means of a heat exchanger fluid is illustrated in FIG. 9. The two base plates 41, 42, which form the heat exchanger housing 40 of the heat exchanger 30, as well as two functional structurings 100 arranged thereon, each comprising a plurality of pin bodies 101 or bead bodies 102, can be seen.