CN109312728B

CN109312728B - Actuation system, fastening system, compressor installation and method for actuating a compressor installation

Info

Publication number: CN109312728B
Application number: CN201780033091.0A
Authority: CN
Inventors: 安德烈亚斯·梅茨; 哈拉尔德·亨斯滕贝格尔; 埃德蒙德·盖森贝格尔
Original assignee: SYSTEMATEC GmbH
Current assignee: SYSTEMATEC GmbH
Priority date: 2016-04-20
Filing date: 2017-04-20
Publication date: 2020-07-07
Anticipated expiration: 2037-04-20
Also published as: EP3440354A1; DE102016107289A1; WO2017182566A1; CN109312728A; EP3440354B1

Abstract

Actuation system (1) for regulating or controlling a compressor device, having a housing for a compressed fluid, wherein a deformable structural element (4) of the housing is arranged between a first pressure zone (N) and a second pressure zone (P) of the compressor device (23), comprising: an electric power module (3); a cooling plate (2) which is designed to conduct heat away from an electrical power module (3) which is thermally coupled to the cooling plate (2); and a fastening system for the cooling plate (2), having a plurality of spacer elements (5) which space the cooling plate (2) from the structural element (4), wherein the spacer elements (5) are arranged such that the transmission of deformations of the structural element (4) to the cooling plate (2) is reduced. A fastening system, a compressor device (23) and a method for operating a compressor device (23) are also proposed.

Description

Actuation system, fastening system, compressor installation and method for actuating a compressor installation

Technical Field

The invention relates to an actuating system for adjusting or controlling a compressor device, to a fastening system and to a compressor device having an actuating system. The invention also relates to a method for operating a compressor installation.

Background

In compressors or pressers, the gas is usually pressurized to become a liquid, which is further used in different processes. For example, in refrigeration and air-conditioning technology certain refrigerants, such as CO, are used₂The refrigerant is pressurized in the cycle. In particular, in the case of air conditioning compressors used in motor vehicles, the pressurization takes place by means of an electric drive. In order to advantageously utilize the installation space which is limited in motor vehicles, it is desirable to connect or integrate an operating circuit (in particular a circuit board or a printed circuit board) with the compressor housing, which operating circuit carries the corresponding operating electronics.

A difficulty here is, for example, that the shell surface of the compressor can bow or shift due to pressure fluctuations. In this case, as far as possible no bending stresses should be transmitted to the mechanical and electronic components of the control electronics.

Disclosure of Invention

Against this background, the object of the invention is to: an advantageous fastening possibility of an electronic actuating device for a compressor installation on a deformable surface is provided.

Therefore, an actuation system for regulating or controlling a compressor installation is proposed, which has a housing for a compressed fluid. The deformable structural element of the housing is arranged between a first pressure zone and a second pressure zone of the compressor device. The control system comprises: an electric power module; a cooling plate configured to conduct heat away from the electrical power module, the electrical power module being thermally coupled to the cooling plate; and a fastening system for the cooling plate. The fastening system has a plurality of spacer elements which space the cooling plate from the structural element, wherein the spacer elements are arranged such that the transmission of deformations of the structural element to the cooling plate is reduced, in particular prevented.

The power module is in particular a component of an electronic control system of a compressor installation. The control system may comprise further electronic components, such as power semiconductors, switches, processors, memories and the like. In an embodiment, the electronic control system has a circuit card or circuit board with printed conductors, which is protected by means of the fastening system and the cooling plate against bending stresses on the one hand and thermal stresses on the other hand.

Preferably, the cooling plate is spaced apart from the structural element by means of a spacing element, so that no additional stress points are formed between the structural element and the cooling plate even in the normal operation of the compressor installation with maximum deformation or arching of the structural element. This has the following advantages: the cooling plates and other elements mechanically coupled thereto are not subjected to additional bending stresses. Thus, for example, deformations in the form of a camber of the flat structural element are not transmitted to the cooling plate, since deformations of the structural element surface in the axial direction can occur as a deflection movement between the positions of the spacer elements without additional stresses being generated in the cooling plate. In this case, the cooling plate is preferably not impeded by inelastic obstacles in the direction of the offset movement. In this respect, the control system is integrated into or onto the housing of the compressor device in a simple and cost-effective manner.

The first pressure zone is for example a low pressure zone of a compressor, while the second pressure zone is a zone with atmospheric pressure. The structural element may, for example, correspond to a housing bottom which deforms, shapes, twists, arches or bends as a result of pressure fluctuations between the pressure prevailing inside the compressor and the external atmospheric pressure. For example, a pressure change of from 3MPa to 8.5MPa or from 30bar to 85bar within the housing is caused when the compressor device is in operation. The region of the structural element or housing base that deforms, shapes, twists, arches, or bends due to pressure load changes may also be referred to as the "breathing zone".

Furthermore, the pressure in the low-pressure region approaches zero, for example when filling the compressor with refrigerant, so that the structural element or the housing base can also be deformed, shaped, twisted, arched or bent in the "other direction" or inwards, since the atmospheric pressure is higher. While the low-pressure zone can be loaded, for example, with a test pressure of 150MPa or 15 bar.

For the control system, the cooling plates are in particular axially spaced apart, i.e. essentially normal to the faces of the cooling plates and the structural element, preferably only by spacer elements. In this case, the transmission of the deformation of the component to the cooling plate is reduced or prevented at least with respect to the flat fastening of the cooling plate to the housing.

The cooling plate may in particular be arranged so as to be laterally, in particular slightly, movable relative to the spacer element. "lateral" is understood to mean running in the plane of the cooling plate. The handling system may be designed such that a laterally floating support of the cooling plate is possible. That is, no tensioning occurs in the plane of the cooling plate.

The cooling plates and in particular the flat structural elements preferably run parallel to one another. Furthermore, the cooling plate is preferably an aluminum plate, an aluminum oxide plate, a ceramic plate, a Copper plate, a DCB plate (English: direct Copper-DCB, Chinese: direct Copper clad plate) or a laminate plate. The electrical power module is preferably a module with insulated-gate bipolar transistors (IGBTs) and/or metal oxide semiconductor field effect transistors.

The service life of the cooling plate and the electronics and the conductor tracks can thus be significantly extended. Preferably, the spacer elements are arranged around the arching or twisting center such that the spacer elements move symmetrically during arching or twisting of the structural element, so that the cooling plate is only subjected to translational movements. The spacer elements serve as point-like fulcrums for the cooling plate. Preferably, these spacer elements are arranged at the locations where the least deformation of the structural elements can be expected.

The holding plate, which is designed as a cooling plate, is preferably made of an electrically conductive material, whereby an electrical shielding is achieved in addition to the function of supporting and dissipating heat. The control system thus also meets the safety requirements of the control electronics in the motor vehicle, which operate at 12, 48 volts or more than low voltage (up to 60 volts).

The spacer elements are preferably arranged symmetrically around the region of maximum axial or normal deviation of the structural elements. The predetermined spacing between the cooling plate and the structural element is kept constant by a plurality of, for example, symmetrically arranged spacer elements, in particular in the region of these spacer elements. This makes it possible to use a flat heat-conducting element which makes it possible to achieve a particularly good heat transfer from the cooling plate to the structural element.

In one embodiment, the electrical power module is arranged on the side facing away from the structural element in order to conduct heat away from the electrical power module to the cooling plate.

At least one cooling plate is therefore arranged between the power module and the structural element. The heat can thus be conducted away by means of the cooling plate to the structural element without the arching or deformation of the structural element mechanically affecting the power module.

In one embodiment, the control system comprises at least one heat-conducting element, which is arranged between the structural element and the cooling plate, so that heat can be conducted away from the cooling plate to the structural element by means of the heat-conducting element.

This improves the cooling of the power module, since the heat-conducting element is additionally arranged between the cooling plate and the structural element. Preferably, the heat-conducting element consists of a material which is softer than the cooling plate and/or the structural element. Further preferably, the heat-conducting element is of elastic and/or flexible design.

The heat-conducting element is for example at least partially made of an elastomer. The heat-conducting element may also be applied to the structural element in the form of a gel, jelly or paste. This can be achieved, for example, by means of a dispenser.

In one embodiment, the heat-conducting element has a flat geometry with a recess arranged in particular centrally, whereby the region of the structural element that is subjected to the greatest deformation is arranged in the region of the recess.

In the present case, maximum deformation can also be understood as maximum shaping, arching or twisting. The space for the structural element is provided by means of the recess, so that the structural element can extend into the recess when it is deformed, twisted or arched. The transmission of the deformation of the structural element to the heat-conducting element is therefore also prevented or kept small. This has the advantage that the heat-conducting element is advantageously used. Further preferably, the compression space is provided such that the heat conducting element compressed due to the twisting of the structural element has space for evasion. This can be achieved, for example, by segmenting the heat-conducting element or by providing additional intermediate spaces. Preferably, a part of the structural element extends into the hollow.

In an embodiment, the heat conducting element has a recess through which the spacer element extends.

The provision of a recess for the spacer element in the heat-conducting element enables the use of large heat-conducting elements which are, for example, longer and/or wider than the spacing between these spacer elements. At the same time, a rotation resistance of the heat-conducting element relative to the structural element can also be achieved by means of these recesses.

Preferably, the spacer elements extend through the recesses until the cooling plate is reached.

The one or more heat conducting elements may be in the form of pads between the cooling plate and the generally flat structural element. The spacer elements loaded with the pressing force thus ensure a substantially constant spacing, whereby contact between the mat on the one hand with the holding plate or cooling plate and on the other hand with the housing bottom or structural element is ensured anyway, for example in the region around the spacer elements.

In an embodiment, the housing bottom has one or more recesses for accommodating one or more heat conducting elements.

In one embodiment, the actuating system has at least one spring element, wherein the pressing force is exerted by the cooling plate on the structural element via the spacer element by means of the spring element.

For example, the spring element is designed as an elastomer spring, in particular with a flat geometry. In this case, the spring element can be arranged in particular on the inside of the housing cover and can exert a pressing force on the remaining part of the operating system.

Preferably, a plurality of spring elements, in particular at least three spring elements, are provided. For example, spring elements are provided on the fastening mechanism, which fastens the cooling plate to the structural element. The spring element is in particular a disk spring and lies on the upper side of the cooling plate, wherein the structural element in particular has at least one screw dome which in particular extends into a through-hole of the cooling plate, wherein in particular a fastening element, for example a washer, is screwed onto the screw dome by means of a fastening means, for example a screw or a bolt, and clamps the cooling plate against it, wherein the spring element is prestressed with respect to the cooling plate and the fastening element.

Alternatively or additionally, the cooling plate is held by means of an axial contact pressure which is generated in particular by means of a screw-on or snap-on cover of the compressor installation, which cover is fastened to the structural element in a releasable manner. The axial contact force can be transmitted, in particular, by means of other holding means.

Both the screw dome and the fastening element have a radial play, in particular within the, in particular circular, bore of the cooling plate, so that a slight displacement or displacement of the screw dome relative to the radial direction of the bore does not cause stresses into the cooling plate. Thus, even the provision of a plurality of screw domes allows for a particularly slight lateral movement between the structural element and the cooling plate. The cooling plate is prestressed in the direction of the structural element by means of prestressed spring elements, so that, in particular, a displacement or displacement of the spacer element due to twisting, deformation, shaping or arching of the structural element can be compensated by means of elastic damping of one or more spring elements. This pretension also ensures: it is ensured that the cooling plate lies stably on the spacer element, in particular that no axial gap exists between the cooling plate and the spacer element. The spring element can in particular be embodied such that an up-and-down movement of the cooling plate can be compensated.

In an embodiment, the structural element forms a face, in particular a circle, and the spacer elements are arranged symmetrically about a geometric center point of the face.

Preferably, the spacer elements are arranged in the edge regions of the cooling plates and of the, in particular circular, faces of the structural element in order to space the cooling plates apart. For example, the spacer elements may be arranged at uniform angular intervals, in particular 120 °, around a center point. A stable support surface of the cooling plate on the spacer element can thus be achieved. Preferably, the geometric center point is the point that is most shaped when the structural element is twisted or arched.

In one embodiment, the spacer elements are at least partially cylindrically formed.

For example, a column having a height between 0.1mm and 2mm may be provided. The height of these spacer elements at least predetermines the spacing of the cooling plates from the structural element.

In an embodiment, the spacer elements are molded on the structural element.

Thus, there is an integration body consisting of the structural element and the spacer element. Preferably, the integrated body consists of one material. Further preferably, the integrated body is cast and/or manufactured by means of a cutting manufacturing method. Thus, the spacer elements do not have to be positioned, aligned or fastened during costly installation.

In an embodiment, the spacer elements are formed on the cooling plate. There is then an integration of the spacer element and the cooling plate.

A fastening system for a cooling plate on a deformable structural element is also proposed, which is arranged between a first pressure zone and a second pressure zone of a compressor installation, wherein the cooling plate is set up for conducting heat away from an electrical power module thermally coupled to the cooling plate, wherein the cooling plate is spaced apart from the structural element by means of a plurality of spacing elements, wherein the spacing elements are arranged such that a transmission of a deformation of the structural element to the cooling plate is prevented.

There is also proposed a compressor apparatus having: a steering system as described hereinabove or hereinbelow; a housing part, which comprises a housing bottom as a structural element, wherein the housing bottom separates a first pressure region from a second pressure region, which has a lower pressure than the first pressure region, wherein the cooling plate is fastened to the housing bottom in the axial direction on the low-pressure side by means of a fastening system.

The pressure difference can be, for example, between 3MPa and 8.5MPa, whereby in the compressor the housing bottom can be arched in a few tens of millimeters during operation. However, buckling of the cooling plate is avoided by the handling system or the fastening system. The compressor device is, for example, designed for the CO₂Or FCKW (chlorofluorocarbon) pressurization. In embodiments, CO is involved in this regard₂As a refrigerant.

In an embodiment, the housing bottom has positioning aids, centering means and/or anti-rotation parts for the cooling plate. Thereby, the production and manufacture of the compressor device is simplified. A floating fastening can also be achieved, wherein in particular a lateral movement relative to the spacer element can be achieved.

In an embodiment, a compressor apparatus has: a low pressure zone for collecting the fluid to be pressurized; and a high pressure zone in which a pressurized or compressed fluid is maintained. In an embodiment, the structural element as a housing bottom separates the low-pressure region from the atmospheric pressure existing outside the compressor device. In the low-pressure chamber, the fluid is substantially cooler than in the high-pressure region, so that the housing floor can be used for cooling better than when a cooling plate is arranged on the housing wall bounding the high-pressure region.

A method for fastening a cooling plate on a deformable structural element arranged between a high-pressure region and a low-pressure region of a compressor installation is also proposed. The cooling plate is spaced apart from the structural element by means of a spacer element. The method makes use in particular of the above-described operating system or the above-described fastening system or the above-described compressor installation.

In one embodiment, the structural element is designed to move away from the zero position less in the region in which the spacer elements are arranged than in the region between the spacer elements as a result of the pressure increase. For example, the structural element arches in the region between the spacer elements as a result of the pressure increase.

In an embodiment, the handling system, the fastening system or the compressor device comprises a printed circuit board, in particular a circuit card. The power module can be arranged between the cooling plate and the printed circuit board, but can also be arranged on the side of the printed circuit board facing away from the cooling plate and the structural element. Therefore, the transmission of the deformation of the component to the printed circuit board is also prevented by the cooling plate and its fastening portion.

In one embodiment, no spacer elements are provided for fastening the cooling plates, in particular at the center point or at predefined regions around the center point, which is often subject to particularly strong axial deviations due to deformations of the structural elements.

In an alternative embodiment of the fastening system and/or the handling system, the cooling plate is replaced by a retaining plate. The holding plate then only optionally has a heat-conducting function and serves primarily as a holding element or carrier element for the electronic component and/or the printed circuit board or circuit board.

In one embodiment, the housing bottom has a pressure-resistant feed-through for at least one connection from the first pressure zone to the second pressure zone to the holding plate or cooling plate.

Preferably, no further fastening means are present, so that the retaining plate or cooling plate advantageously always maintains its planar shape even when the structural element is deformed. The holding plate or the cooling plate can be held or supported in a floating manner on the, in particular, flat structural element.

In one embodiment, the structural element is embodied, for example, as a housing base of an air conditioning compressor, which is made of a material that conducts heat well. For example, aluminum, stainless steel or composite materials are also conceivable. The structural element additionally has a cooling function, since the refrigerant present in the second pressure region is mostly below the operating temperature of the power semiconductor. The power semiconductor chips for example generate a temperature between 100 ℃ and 150 ℃, whereas the refrigerant in the compressor has a temperature significantly below 60 ℃.

The embodiments and features described for the proposed handling system apply correspondingly for the proposed fastening system, the proposed compressor arrangement and the proposed method. The embodiments and features of the proposed compressor installation are equally applicable to the fastening system, the handling system and the method.

Other possible implementations of the invention also include combinations of features or embodiments not explicitly mentioned before or below in relation to the embodiments. The person skilled in the art will also add individual aspects as improvements or supplements to the corresponding basic forms of the invention.

Drawings

Further advantageous embodiments and aspects of the invention are the subject matter of the dependent claims and the embodiments of the invention described below. The invention will be further elucidated below in terms of preferred embodiments with reference to the appended drawings. Wherein:

fig. 1 shows a significantly simplified cross-sectional view of a first embodiment of a steering system;

fig. 2 shows a simplified cross-sectional view of a second embodiment of the steering system;

fig. 3 shows the control system according to fig. 2 in a perspective view;

fig. 4 shows a top view of a structural element with a heat-conducting element;

fig. 5 shows a perspective view of a heat-conducting element;

FIG. 6 shows a perspective view of a cooling plate with a power module; and is

Fig. 7 shows a perspective view of the cooling plate.

In the figures, identical or functionally identical elements are provided with the same reference signs, unless otherwise indicated.

Detailed Description

Fig. 1 is a greatly simplified sectional view of a first embodiment of a control system 1. The control system 1 is suitable for regulating or controlling a compressor installation, which has a housing for a compressed fluid and in which the fluid is pressurized by means of an electric drive. The control system 1 couples the electronic components, such as the electrical power module 3 and the printed conductors (not shown), via the cooling plate 2 to a particularly elastically deformable structural element 4 of the compressor installation by means of spacer elements which space the cooling plate 2 from a surface 4A of the structural element 4. The structural element 4 is, for example, a housing base of a compressor housing for receiving a compressed fluid. The compressor device may be used, for example, in an electric vehicle or a hybrid vehicle and may operate at a voltage of 100 volts to 400 volts or 400 volts to 1000 volts. Preferably, the range of use is higher than the low voltage. Alternatively, the cooling plate 2 can be designed as a holding plate for the electronics and/or as a circuit board for the electronic control device of the compressor drive.

Fig. 1 shows a deformable element 4, which deformable element 4 has a flat geometry and can be, for example, the housing base of a compressor installation. In particular, the elastically deformable structural element 4 is arranged between the atmospheric pressure region P and the low pressure region N and separates them from one another. In the operation of the compressor installation under consideration, the low-pressure region N has a pressure higher than atmospheric pressure. The cooling plate 2 has a lower side 2A and an upper side 2B, wherein the cooling plate 2 is thermally coupled to the electrical power module 3 at the upper side 2B in order to conduct heat away from the electrical power module 3. The component 4 likewise has an upper side 4A and a lower side 4B, the upper side 4A facing the lower side 2A of the printed circuit board 6, the spacer element 5 being located between the lower side 2A and the upper side 4A, the lower side 4B pointing towards the pressure zone N. Due to the pressure difference, the structural element 4 may bow or deform from the initial position. This is outlined by a dashed illustration of the upper side 4A 'and the lower side 4B'. The cooling plates 2, the electrical power modules 3 and the spacer elements 5 are not twisted, arched or deformed and are outlined by a dashed outline in order to illustrate the behavior of the handling system 1 during twisting or arching of the structural element 4.

In order that the cooling plate 2 is not subjected to the same deformation or arching, the fastening system for the cooling plate 2 is equipped with a plurality of spacer elements 5, which spacer elements 5 space the cooling plate 2 from the structural element 4, wherein the spacer elements 5 are arranged such that the transmission of the deformation or arching of the structural element 4 to the cooling plate 2 is prevented to a certain extent and at least reduced. These spacer elements 5 are arranged, for example, around a deformation, arching apex or arching center point in such a way that they displace the cooling plate 2, preferably only in translation, during a corresponding movement due to twisting and the cooling plate 2 is not subjected to additional bending or tensioning. Correspondingly, the actuation system 1 is designed in terms of spacing such that no additional pressure points are formed between the structural element 4 and the cooling plate 2 when the distortion, deformation, shaping or arching of the structural element 4 is maximal, for example during operation of the compressor installation.

In particular, it is possible to use the actuation system 1 in a compressor system, for example, an air conditioning compressor of a motor vehicle.

Fig. 2 to 7 show a plurality of illustrations of an embodiment of a compressor installation 23 with a handling system, in which a cooling plate is fastened as a holding plate by means of a fastening system. In fig. 2 and 3, a section of the compressor installation 23 is shown in cross section. Fig. 4 shows a top view onto the upper side of the bottom of the housing in general, fig. 5 shows a perspective view of the heat conducting mat, and fig. 6 shows a part of the compressor installation in an oblique perspective view onto the upper side of the cooling plate. Fig. 7 shows a perspective view of the circuit board.

Fig. 2 shows a simplified cross-sectional view of a second embodiment of the steering system 1. In contrast to fig. 1, the control system 1 comprises a heat-conducting element 7, which is arranged between the structural element 4 and the cooling plate 2, so that heat can be conducted away from the cooling plate 2 to the structural element 4 by means of the heat-conducting element 7. The heat-conducting element 7 has a flat geometry with a centrally arranged recess, so that the region of the structural element 4 that is subjected to the greatest deformation is arranged in the region of the recess. The heat-conducting element 7 also has recesses through which the spacer elements 5 extend, the spacer elements 5 being molded onto the structural element 4, so that an

integrated body

4, 5 is present which is composed of the structural element 4 and the spacer elements 5. The upper side of the

integrated body

4, 5 is at least partially formed as a cavity for the heat-conducting element 7.

The control system 1 has at least one spring element 8, wherein the cooling plate 2 exerts a pressing force on the structural element 4 via the spacer element 5 by means of the spring element 8. The spring element 8 is in particular a disk spring and lies on the upper side 2B of the cooling plate 2, wherein the structural element 4 has at least one screw dome 9 which extends into a through-hole 10 of the cooling plate 2, wherein a fastening element 11, in particular a washer, is screwed onto the screw dome 9 by means of a screw 12 and clamps the cooling plate 2 in opposition, wherein the spring element 8 is prestressed with respect to the cooling plate 2 and with respect to the fastening element 11. Both the screw dome 9 and the fastening element 11 have a radial play in the, in particular circular, bore 10, so that a slight displacement or displacement of the screw dome 9 radially relative to the bore 10 does not cause stresses into the cooling plate 2. Thus, the provision of a plurality of screw domes 9 will also allow for a particularly slight lateral movement between the structural element 4 and the cooling plate 2. The cooling plate 2 is prestressed in the direction of the structural element 4 by means of prestressed spring elements 8, so that a displacement or displacement of the spacer element 5 due to a twisting, deformation, shaping or arching of the structural element 4 can be compensated by means of elastic damping of the spring element 8 or the spring elements 8. This pretension also ensures: it is ensured that the cooling plate 2 lies stably on the spacer element 5, in particular that no axial gap exists between the cooling plate 2 and the spacer element 5.

In fig. 2, only one spacer element 5 is shown, wherein the other spacer elements 5 are in other cross-sectional planes of the control system 1 or cannot be seen in the illustrated plane. The heat-conducting element 7 is in particular made of a softer material than the structural element 4 and/or the cooling plate 2 and/or is in particular a heat-conducting mat. Preferably, the heat conducting element 7 consists of a soft and/or elastic material.

Fig. 3 shows the control system according to fig. 2 in a perspective view.

In order to prevent damage to the electrical power module 3 and the printed circuit board or circuit card or circuit board 6, the electrical power module 3 and the printed circuit board or circuit card or circuit board 6 are mounted on the cooling plate 2. Between the cooling plate 2 and the housing bottom 4, a heat-conducting element 7 is mounted as a heat-conducting mat. The heat-conducting element 7 requires a defined distance from the housing bottom 4, which is filled by the material of the heat-conducting mat 7. The heat generated in the electrical power module 3 or the heat generated by the circuit board 6 is thereby transferred via the cooling plate 2 to the housing bottom 4. The housing bottom 4 is cooled by the refrigerant in the pressure chamber N.

Fig. 4 shows a plan view of the structural element 4 with the heat-conducting element 7. Three spacer elements 5 and three threaded domes 9 are arranged on the structural element 4 at an angular spacing of 120 ° around a central point M. In order to ensure a uniform laying and displacement of the cooling plate 2 by means of the structural element 4, in particular the housing bottom, these spacer elements 5 are distributed symmetrically about the center of the structural element 4, in particular the inflection of the housing bottom. The heat-conducting element 7 is left free in the middle of the component 4, since in this region 15 the component 4, in particular the housing bottom, moves the most up and down as a result of pressure load changes.

The structural element 4 or the housing bottom also has four fixing elements 22, which are arranged radially on the outside at an angular spacing of 90 ° and are provided as a positioning aid for the cooling plate 2, which has cutouts 21 corresponding to the fixing elements 22. The fixing elements 22 are in particular designed as fixing pins and extend in the axial direction, i.e. substantially normal with respect to the cooling plate 2 in the installed state.

Fig. 5 shows a perspective view of the heat-conducting element 7 from fig. 4. The heat-conducting element 7 has a circular geometry. The heat-conducting element 7 also has recesses for the cylindrical spacer element 5 and at least partially for the cylindrical screw dome 9 (only one of these recesses is provided with the reference number 16). The recesses 16 for the spacer elements 5 have an angular spacing of 120 ° from one another. The recesses 17 for the screw connection of the domes 9 likewise have an angular spacing of 120 ° and each correspond in the radial direction to the recess 16 for one of the spacer elements 5, but are situated further outward in the radial direction.

Fig. 6 shows a perspective view of a cooling plate 2 with electronic IGBT power modules 3, the electrical power modules 3 being mounted on the cooling plate 2 by means of a screw connection 13 and a backing plate 20, four screw domes 14 for fastening the printed circuit board 6 on the cooling plate 2 are also provided, the cutouts 21 being at least partially designed as a negative of the fixing elements 22, so that the cooling plate 2 can be laid flat on the structural element 4 in a form-locking manner (formschl ü ssig) and in a rotation-resistant manner (verdrehsich) as soon as the fixing elements 22 engage in the cutouts 21, the cutouts 21 being designed as long holes.

Fig. 7 shows a perspective view of the printed circuit board 6. The printed circuit board 6 is mounted above and in contact with the electrical power module 3. The electronic power module 3 is connected to a printed circuit board 6, for example a circuit board or a printed circuit board as a carrier for the electronics 18 of the corresponding control circuit. But also Circuit cards, Printed Circuit boards, Circuit boards or PCBs (english: Printed Circuit boards). To realize the threaded connection 14 (see fig. 6), an operating hole 20 is provided in the printed circuit board 6.

The control circuit or control system for the corresponding air conditioning compressor is implemented on the printed circuit board 6 by means of the electronic components 18, in particular by means of the power semiconductors 3. In the illustration in fig. 7, the printed circuit board or printed circuit board 6 has a structural element 9 on the upper side. Furthermore, a power semiconductor or module 2 (covered) is arranged on the underside, which can generate a temperature of between 100 ℃ and 150 ℃.

While the invention has been described in terms of several embodiments, the invention can be modified. In particular the number of spacer elements may be varied. It is also possible to achieve the pressing force by other, for example elastic, elements. Furthermore, the shape and geometry of the bottom of the housing is not necessarily circular. Oval or other shapes are also conceivable here. The structural element does not necessarily have to be the bottom of the housing of the compressor installation. Furthermore, the materials and dimensions mentioned are variable and can be adapted to the respective installation situation of the structural elements or the compressor installation. The pressure data can likewise vary and depend on the refrigerant compressed by the compressor device.

List of reference numerals

1 control system

2 Cooling plate

2A lower side

2B upper side

3 electric power element

4 structural element

4A upper side

4B lower side

5 spacer

6 printed circuit board

7 Heat conducting element

8 spring element

9 spiro union dome

10 holes

11 fixing element

12 screw

13 screw connection

14 screw joint dome

15. 16, 17 hollow parts

18 electronic device

19 operating hole

20 fastening backing plate

21 hollowed part

22 fixing element

23 compressor installation

N low-voltage region

M center point

P atmospheric pressure region

Claims

1. Actuation system (1) for controlling a compressor device (23), having a housing for a compressed fluid, wherein a deformable structural element (4) of the housing is arranged between a first pressure zone (N) and a second pressure zone (P) of the compressor device (23), the actuation system (1) having:

an electric power module (3);

a cooling plate (2) which is designed to conduct heat away from the electrical power module (3) which is thermally coupled to the cooling plate (2), wherein the cooling plate (2) is arranged between the structural element (4) and the electrical power module (3); and

fastening system for the cooling plate (2), having a plurality of spacer elements (5) which space the cooling plate (2) from the structural element (4), wherein the spacer elements (5) are arranged such that the transmission of the deformation of the structural element (4) to the cooling plate (2) is reduced.

2. The control system according to claim 1, wherein the electrical power module (3) is arranged on a side (2A) facing away from the structural element (4) in order to conduct heat away from the electrical power module (3) onto the cooling plate (2).

3. The control system as claimed in claim 1, having a heat-conducting element (7) which is arranged between the structural element (4) and the cooling plate (2) such that heat can be conducted away from the cooling plate (2) onto the structural element (4) by means of the heat-conducting element (7).

4. Steering system according to claim 3, wherein the heat conducting element (7) has a flat geometry with a recess (15), whereby the region of the structural element (4) that is subjected to the greatest deformation is arranged in the region of the recess (15).

5. Steering system according to claim 3, wherein the heat conducting element (7) has a clearance (16) through which the spacer element (5) extends.

6. The steering system according to claim 3, wherein the heat conducting element (7) consists of a softer material than the cooling plate (2) and/or the structural element (4).

7. The handling system according to any one of claims 1 to 6, having at least one spring element (8), wherein, by means of the spring element (8), a pressing force is exerted by the cooling plate (2) on the structural element (4) through the spacer element (5).

8. The control system according to claim 7, wherein the spring element (8) lies on an upper side (2B) of the cooling plate (2), wherein the structural element (4) has at least one screw dome (9) which extends into a through-hole (10) of the cooling plate (2), wherein a fixing element (11) is screwed onto the screw dome (9) by means of a screw (12) and clamps the cooling plate (2) in opposition, and wherein the spring element (8) is prestressed against the cooling plate (2) and against the fixing element (11).

9. Steering system according to any one of claims 1 to 6, wherein the structural element (4) forms a face and the spacer elements (5) are arranged symmetrically around a geometric centre point (M) of the face.

10. The actuation system according to one of claims 1 to 6, wherein the spacer element (5) is at least partially cylindrically configured and/or formed on the structural element (4) and/or on the cooling plate (2).

11. The actuation system according to one of claims 1 to 6, wherein the structural element (4) is set up to move away from a zero position less in the region in which the spacer elements (5) are arranged than in the region between the spacer elements (5) as a result of the pressure increase.

12. The control system according to one of claims 1 to 6, having a printed circuit board (6), wherein the electrical power module (3) is arranged between the cooling plate (2) and the printed circuit board (6).

13. Steering system according to claim 4, wherein the flat geometry of the hollow (15) is arranged centrally.

14. The steering system of claim 9, wherein said face is circular.

15. Fastening system for a cooling plate (2) on a deformable structural element (4) which is arranged between a first pressure zone (N) and a second pressure zone (P) of a compressor installation, wherein the cooling plate (2) is set up for conducting away heat from an electrical power module (3) which is thermally coupled to the cooling plate (2) on a side (2A) of the cooling plate (2) facing away from the structural element (4), wherein the cooling plate (2) is spaced apart from the structural element (4) by means of a plurality of spacing elements (5), wherein the spacing elements (5) are arranged such that a transmission of a deformation of the structural element (4) to the cooling plate (2) is prevented.

16. A compressor apparatus (23) having: a steering system according to any one of claims 1 to 14; a housing part comprising a housing bottom (4) as a structural element; wherein the housing bottom (4) separates a first pressure zone (N) from a second pressure zone (P) having a lower pressure than the first pressure zone (P); wherein the cooling plate (2) is fastened in the axial direction on the housing bottom (4) on the low-pressure side by means of the fastening system.

17. Method for operating a compressor installation (23), wherein a cooling plate (2) is fastened on a deformable structural element (4) which is set up for conducting heat away from an electrical power module (3) which is thermally coupled to the cooling plate (2) on a side (2A) of the cooling plate (2) facing away from the structural element (4), the deformable structural element being arranged between a high-pressure region and a low-pressure region (N) of the compressor installation (23), wherein the cooling plate (2) is spaced apart from the structural element (4) by means of a spacing element (5), and wherein the spacing element (5) is arranged such that the transmission of deformation of the structural element (4) to the cooling plate (2) is reduced.

18. Method according to claim 17, wherein the compressor device (23) is designed according to claim 16.