EP3317599B1 - Connection component of a refrigerant compressor - Google Patents

Connection component of a refrigerant compressor Download PDF

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Publication number
EP3317599B1
EP3317599B1 EP16735617.9A EP16735617A EP3317599B1 EP 3317599 B1 EP3317599 B1 EP 3317599B1 EP 16735617 A EP16735617 A EP 16735617A EP 3317599 B1 EP3317599 B1 EP 3317599B1
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EP
European Patent Office
Prior art keywords
connection component
housing
segment
refrigerant compressor
loaded state
Prior art date
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Application number
EP16735617.9A
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German (de)
French (fr)
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EP3317599A1 (en
Inventor
Reinhard Resch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Secop GmbH
Original Assignee
Nidec Global Appliance Germany GmbH
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Publication date
Application filed by Nidec Global Appliance Germany GmbH filed Critical Nidec Global Appliance Germany GmbH
Publication of EP3317599A1 publication Critical patent/EP3317599A1/en
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Publication of EP3317599B1 publication Critical patent/EP3317599B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/006—General constructional features for mounting refrigerating machinery components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/13—Vibrations

Definitions

  • the present invention relates to a connecting component of a refrigerant compressor for connecting a housing of the refrigerant compressor to a device operatively connected to the refrigerant compressor, preferably to a mounting plate of a refrigerator, the connecting member comprising an inner member and an outer member surrounding the inner member, wherein the inner member has a higher rigidity than the outer member and wherein the outer member has a functional portion which is designed so that it is supported in a loaded state of the connecting member both on the housing and on the device, preferably the mounting plate, wherein in the loaded state a Relative movement of the housing and the device is given to each other and parallel to an axial direction and a compressive load is parallel to the axial direction prevailing, with a free space is provided, seen in a transverse direction a n adjoins the functional portion of the outer member, wherein the inner member and the outer member are arranged parallel to the transverse direction seen one behind the other and wherein in the loaded state of the connecting member of the functional portion is deformed so that it projects at
  • connecting components are used for the vibration-related decoupling of a refrigerant compressor from a device operatively connected to the refrigerant, in particular from a cooling device. That the refrigerant compressor is connected via the connecting components to the device or connected thereto.
  • the connecting components usually comprise a sleeve, in particular of metal, which is surrounded radially by a rubber element with a typical hardness of 40 to 50 Shore A.
  • rubber has a number of disadvantages that adversely affect vibration decoupling.
  • the high dynamic stiffness of rubber and its incompressibility in connection with the type of assembly which i.a. causes a high transverse stiffness of the connecting component, make a sufficiently good vibration isolation, especially at low frequencies, almost impossible.
  • rubber is still used for cost reasons. Especially for mass products, such as Refrigerators, the cost pressure is enormous, which is why rubber is preferably used as a material.
  • an anti-vibration component for a refrigerant compressor for connecting a housing of the refrigerant compressor to a base plate of a refrigerator is known.
  • the anti-vibration component has an inner portion and an outer portion, wherein between the portions of a free space is formed and the portions are each curved in the direction of the free space.
  • the sections are connected to each other at their top, so that both sections are supported on the housing in the region of their upper end. With their lower ends, both sections are always supported - and thus in particular under axial load - on the base plate.
  • a connecting component for a compressor wherein the connecting member has an inner and an outer portion and wherein both portions are supported under axial load both on the compressor housing and on a conceivable as a mounting plate element.
  • the core of the invention for achieving the abovementioned object is to provide a connecting component with a nonlinear spring characteristic.
  • the static compressive bias of the connecting member having an inner member and an outer member surrounding the inner member, wherein the inner member has a higher rigidity than the outer member, placed in the vicinity of a critical load. This affects like a flat point in the Connecting element, which is connected to the housing or the device at least in the loaded state.
  • a loaded state of the connection component is always to be understood below as meaning that at least one pressure component is present, which runs parallel to an axial direction.
  • relative movements of the housing and the device relative to one another and parallel to the axial direction to the said loaded state of the connecting component occur.
  • a longitudinal axis of the connecting member is parallel to the axial direction.
  • a free space is provided, preferably in the form of a gap, which adjoins the functional section in a transverse direction which extends transversely, preferably perpendicular to the axial direction.
  • the free space or the gap from the functional section can be connected in the direction of the inner element to the functional section or viewed in the opposite direction.
  • the free space or gap is free in an unloaded state of the connecting component, wherein in the unloaded state there is no pressure component in the axial direction.
  • the outer member or its functional portion is designed so that it deforms in the loaded state relative to the unloaded state, when in the loaded state prevails a predetermined pressure parallel to the axial direction.
  • the functional section deforms so that it projects into the free space or gap. That is to say that the functional section can basically deform in the direction of the inner element or in the opposite direction - depending on how the free space or gap is arranged relative to the functional section. In particular, the functional section can deform so that a central portion of the functional section bulges in the free space.
  • a connecting member of a refrigerant compressor for connecting a housing of the refrigerant compressor to a device operatively connected to the refrigerant compressor, preferably to a mounting plate of a refrigerator
  • the connecting member comprising an inner member and an outer member surrounding the inner member, wherein the inner member has a higher rigidity than the outer member and wherein the outer member has a functional portion which is designed so that it is supported in a loaded state of the connecting member on both the housing and on the device, preferably the mounting plate, according to the invention provided that a Free space is provided, which, viewed in a transverse direction, adjoins the functional portion of the outer element, wherein the inner element and the outer element are arranged one behind the other, viewed parallel to the transverse direction, and wherein in the loaded Condition of the connecting member of the functional portion is deformed so that it protrudes at least partially into the free space.
  • the inner and outer members may have substantially circular cross-sections.
  • the outer element surrounds the inner element radially.
  • the functional portion can be designed so that its deformation takes place as buckling. Accordingly, it is provided in a preferred embodiment of the connecting component according to the invention that the deformed functional portion comprises a portion having a kink, wherein the portion of the functional portion having the kink at least partially protrudes into the free space.
  • the deformed functional portion bears at least partially against an abutment part of the connecting component, which abutment part adjoins the free space in the transverse direction.
  • a structurally particularly simple and cost-effective production of the connecting component according to the invention is made possible by the functional section deformed or buckled in the direction of the inner element and rests against the inner element.
  • the inner element does not deform in the loaded state.
  • the inner element does not support the housing and device at the same time in the loaded state, particularly preferably only on the housing or only on the device. Accordingly, it is provided in a preferred embodiment of the connecting component according to the invention that the contact part of the connecting member is formed by the inner member.
  • the outer element has an inner, closer to the inner member arranged portion and an outer portion, wherein the functional portion is formed by one of the two sections and of the two sections, only the functional portion in the loaded state of the connecting member both Housing and on the device, preferably the mounting plate supported.
  • the outer portion is arranged transversely and outwardly behind the inner portion, wherein the Transverse transverse, preferably normal to the axial direction.
  • the outer and the inner portion each have a substantially annular cross-section.
  • Said loaded state does not exclude that there are also other loaded states in which both sections are supported on both the housing and on the device.
  • a stepwise support of a section is conceivable in which stepwise support this section is supported only on the housing or the device in the loaded state and in which stepwise support, this section in a further loaded state with further increased pressure component parallel to the axial direction both on the housing as well as supported on the device.
  • Such a further increased pressure component may preferably be set in a further approach of the housing to the device parallel to the axial direction.
  • the free space is at least partially formed between the inner portion and the outer portion. That the space allows deformation of that portion which is supported in the loaded state of the connecting member both on the housing and on the device, in the direction of the other portion.
  • the system part is formed by the other of the two sections. That is, the functional portion forming portion is supported on the other portion.
  • the other section does not deform itself or does not buckle itself.
  • the other portion is supported in the loaded state only on the housing or the device, but not both at the same time .
  • the adjacent portion is supported with an end portion on the housing or the device and another end portion of the adjacent portion may move in the loaded state with respect to the device or the housing or is free relative to the device or the housing.
  • the degree of instability of the system or outer member at lower loads can be adjusted by choosing the wall thickness of the deforming portion.
  • a sufficiently large wall thickness prevents too much instability at low load.
  • the other portion only has to fulfill a supporting function for the deforming portion in the first place, its wall thickness can be kept relatively small.
  • the connecting component according to the invention it is therefore provided that the functional section seen in the transverse direction, at least in sections, a greater wall thickness than the other of the two sections. Thus, even material can be saved at the other section.
  • the wall thickness is here preferably measured in the unloaded state of the connecting component.
  • the other section in the axial direction must be sufficiently dimensioned, in particular in relation to the deforming section. Accordingly, it is provided in a preferred embodiment of the connecting component according to the invention that the functional portion seen in the unloaded state of the connecting member in an axial direction has a shorter length than the other of the two sections, wherein the transverse direction is transverse to the axial direction.
  • the deformation of the deforming portion it is provided in a preferred embodiment of the connecting component according to the invention that the functional portion seen in an axial direction in the unloaded state of the connecting member has a greater length than in the loaded state of the connecting member, wherein the transverse direction is transverse to the axial direction ,
  • the deformation can thus be basically arbitrary, as long as it leads to a reduction in length of the deforming section as seen in the axial direction.
  • the functional portion is formed by the outer portion.
  • the two sections as seen in the axial direction, each have a first and a second end region.
  • Connection component provided that the two sections, preferably in the region of an end portion of the respective section, are interconnected.
  • the connection of the two sections counteracts an undesirable, too great instability of the outer element under high pressure loads.
  • the outer element is made in one piece.
  • the outer element is elastic and little to no compressible. Accordingly, it is provided in a preferred embodiment of the connecting component according to the invention that the outer element is made of rubber or an elastomer.
  • rubber can be made both from a natural and from a synthetic material, in particular rubber.
  • the elastomer is correspondingly little to no compressible.
  • a refrigerant compressor comprising a hermetically sealed housing and a drive unit disposed inside the housing with a piston-cylinder unit for cyclically compressing a refrigerant and an electric motor for driving the piston-cylinder unit, wherein the refrigerant compressor
  • at least one connecting element according to the invention for connecting the housing to a device operatively connected to the refrigerant compressor, preferably to a mounting plate of a cooling device comprises.
  • the inventive system comprising a refrigerant compressor according to the invention and a with the refrigerant compressor operatively connected device, preferably a cooling device, wherein the device comprises a mounting plate to which the housing of the refrigerant compressor is connected to the at least one connecting member, wherein in the loaded state of the connecting member of the functional portion is supported both on the housing and on the mounting plate ,
  • an opening and / or recess and / or gradation in the mounting plate is provided, into which projects in the loaded state of the connecting member of the system part.
  • the system part in particular that part of the other section, with which the other section projects in the loaded state into the opening, recess or step of the mounting plate, moves toward the mounting plate during the transition from the unloaded state to the loaded state.
  • the plant part, in particular the other portion in the unloaded state does not protrude into the opening, recess or step of the mounting plate.
  • a refrigerant compressor 1 to see a housing 2, wherein in the interior of the housing 2, a drive unit is provided with a piston-cylinder unit for cyclically compressing a refrigerant and an electric motor for driving the piston-cylinder unit (not shown).
  • the housing 2 is in Fig. 1 via connection components 4 according to the prior art with a mounting plate 26 of a cooling device 3, which is in operative connection with the refrigerant compressor 1, respectively.
  • connection components 4 As in the sectional view of Fig. 2 can be seen, the connection components 4 according to the prior art, an inner member 5 and an inner member 5 surrounding outer member 6.
  • the outer element 6 is typically made of rubber.
  • the inner element 5 has a greater rigidity than the outer element 6, which counteracts a setting of the outer element 6.
  • the connecting element 4 has a longitudinal axis 24 which runs parallel to an axial direction 16. Transverse, preferably normal to the axial direction 16 is a transverse direction 28.
  • the longitudinal axis 24 extends in the transverse direction 28 seen through the center of the connecting element 4. Seen from the longitudinal axis 24 in the transverse direction 28 to the outside, the outer element 6 is disposed behind the inner element 5 ,
  • the inner member 5 may be sleeve-shaped, which allows the passage of a screw (not shown) for connecting the connecting member 4 to the housing 2.
  • a steel spring pin 25 can be seen on which a spring (not shown) can be pressed, by means of which the drive unit (not shown) is mounted in the housing 2.
  • the inner element 5 forms in the illustrated embodiment, a transport safety device 7 at its seen in the axial direction 16 free end by the inner member 5 expands there in the transverse direction 28.
  • an extent 35 of the transport lock 7 in the transverse direction 28 is greater than an extension 34 of an opening 29 of the mounting plate 26, through which opening 29, the inner member 5 and the outer member 6 are passed in the axial direction 16. This in turn prevents the refrigerant compressor 1 in the axial direction 16 can be removed from the mounting plate 26.
  • the outer element 6 forms over the transport lock 7 a damping layer 32.
  • the cushioning layer 32 prevents hard metallic contact between the transportation lock 7 and the mounting plate 26, particularly if the refrigerant compressor 1 should have been improperly mounted and the refrigerant compressor 1 and mounting plate 26 should be biased against each other.
  • FIG. 3 and Fig. 4 show a first embodiment of such a connecting component 4 according to the invention in a sectional view analogous to Fig. 2 , It shows Fig. 3 the connection component 4 according to the invention in an unloaded state without pressure component parallel to the axial direction 16th Fig. 4 In contrast, the connection component 4 according to the invention in a loaded state with at least one pressure component parallel to the axial direction 16, so that the housing 2 and the mounting plate 26 are pressed against each other parallel to the axial direction 16.
  • the outer element 6 is preferably made of rubber or an elastomer with little or no compressibility manufactured.
  • the inner element 5 is preferably made of metal, eg steel or stainless steel.
  • the outer member 6 has an outer portion 9 and an inner portion 10, wherein the inner portion 10 is disposed closer to the inner member 5. Seen from the longitudinal axis 24 in the transverse direction 28 to the outside of the outer portion 9 is disposed behind the inner portion 10. In the axial direction 16, the outer portion 9 is bounded by a first end portion 11 and a second end portion 12. The inner portion 10 is bounded in the axial direction 16 by a first end portion 13 and a second end portion 14. The outer portion 9 and the inner portion 10 are connected to each other in the region of their second end portions 12, 14. Preferably, the outer element 6 is made in one piece.
  • the sections 9, 10 have a symmetry about the longitudinal axis 24, whereby the outer portion 9 and the inner portion 10 normal to the longitudinal axis 24 each have at least partially an annular cross-section.
  • the transverse direction 28 can therefore also be considered in the embodiment shown as a radial direction.
  • other cross-sectional shapes are also possible, e.g. an elliptical or polygonal, in particular rectangular or square, cross-sectional shape.
  • the outer element 6 is connected to the inner element 5.
  • the outer member 6 is connected in the region of the second end portion 14 of the inner portion 10 with the inner member 5 via a press fit.
  • another gap 33 connects to the press fit, which further gap 33 is thus in sections between the inner element 5 and the inner section 10 of the outer element 6 is trained.
  • the further gap 33 serves to avoid a direct contact between the inner element 5, the inner portion 10 and the mounting plate 26. Respectively. allows the further gap 33 that the inner portion 10 can escape when the mounting plate 26 presses parallel to the transverse direction 28 against the inner portion 10 in the direction of inner element 5. Otherwise, a very strong unwanted transverse stiffness would result if the outer member 6 is made of rubber, since rubber is almost incompressible.
  • the sections 9, 10 are supported on the housing 2 in the exemplary embodiment shown.
  • the outer element 6 is supported in the region of the second end regions 12, 14 on the housing bottom 8.
  • the outer portion 9 forms a functional portion 30, wherein the outer portion 9 is supported not only on the housing 2, but also at least in the loaded state of the connecting member 4 with its first end portion 11 on the mounting plate 26 of the refrigerator 3.
  • the first end portion 13 of inner portion 10 projects through the opening 29 of the mounting plate 26 therethrough.
  • the first end portion 13 of the inner portion 10 is thus movable relative to the mounting plate 26 in the axial direction 16 and vice versa.
  • the outer portion 9 is designed so that there is a deformation of the outer portion 9 by buckling. That is, in the loaded state, the outer portion 9 or the functional portion 30 is a deformed portion 27 and has a kink 17, see. Fig. 4 , The inner portion 10, however, is not in the axial Direction 16 pressurized, since its first end portion 13 in the loaded state is simply moved relative to the mounting plate 16 parallel to the axial direction 16 and is. Accordingly, the inner portion 10 is not deformed in the loaded state.
  • the gap 15 In the unloaded state ( Fig. 3 ) is between the outer portion 9 and the inner portion 10 sections a free space in the form of a gap 15 formed, which extends, at least in sections, annularly around the longitudinal axis 24 due to the existing symmetry in the illustrated embodiment.
  • This gap 15 provides space for the outer section 9 or the functional section 30 in the loaded state (FIG. Fig. 4 ) in the direction of the inner portion 10 can buckle. Accordingly, the gap 15 is partially filled in the loaded state by the outer portion 9.
  • the buckling can take place until the outer section 9 or the functional section 30 abuts a contact part 31.
  • the contact part 31 is formed by the inner portion 10. This concern stabilizes the functional section 30 or the outer section 9 or the outer element 6.
  • Outer element 6 or the outer portion 9 or the functional portion 30 are designed so that even relatively low pressures parallel to the axial direction 16 lead to a buckling of the outer portion 9 and the functional portion 30. This corresponds to a relatively unstable state or a very flat spring characteristic. But as soon as the outer portion 9 or the functional portion 30 rests against the inner portion 10 or the contact part 31, the outer portion 9 is stabilized. This is done with further pressure increase, whereby a substantially steeper characteristic is realized at these pressures and results in a total of a non-linear spring characteristic of the connecting member 4 according to the invention.
  • How strong the buckling in dependence on the size of the pressure component is parallel to the axial direction 16 and how unstable the connecting member 4 is at relatively low pressures, can be determined inter alia by the choice of a wall thickness 18 of the outer portion 9.
  • the wall thickness 18 can also be significantly greater than a wall thickness 19 of the inner portion 10.
  • the wall thicknesses 18, 19 are preferably measured in the unloaded state, see. Fig. 3 ,
  • FIG. 5 and Fig. 6 illustrated embodiment of the connecting member 4 according to the invention differs from the embodiment of Fig. 3 and Fig. 4 essentially in that the outer element 6 has only the functional section 30 instead of the two sections 9, 10.
  • the functional portion 30 is supported, at least in the loaded state of the connecting component 4, both on the housing 2 or on the housing base 8 and on the device 3 or on the mounting plate 26.
  • the contact part 31 is formed in this case by the inner element 5, which projects through the opening 29 of the mounting plate 26 in the axial direction 16 therethrough.
  • the gap 15, which is free in the unloaded state of the connection component 4 and provides the necessary space for the deformation or for the buckling of the functional section 30 in the loaded state of the connection component 4, is correspondingly sectionwise between the inner element 5 and the outer element 6 or The functional section 30 is formed.
  • the buckling can take place until the functional section 30 rests against the contact part 31 or against the inner element 5. This concern stabilizes the functional section 30 or the outer element 6.
  • the opening 29 is preferably arranged in a step-stepped section of the mounting plate 26, in which stepped portion the outer element 6 is arranged. Due to the step shape is in the loaded state of Connecting member 4 of the functional portion 30 is supported at its the mounting plate 26 contacting end in the transverse direction 28 when the functional portion 30 buckles into the gap 15.
  • the damping layer 32 on the transport lock 7 is in Fig. 5 and Fig. 6 not shown separately. However, it may of course be provided such, for example by a coating of the transport lock 7 with rubber or otherwise an elastic or damping material.

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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Description

GEBIET DER ERFINDUNGFIELD OF THE INVENTION

Die vorliegende Erfindung betrifft ein Verbindungsbauteil eines Kältemittelverdichters zur Anbindung eines Gehäuses des Kältemittelverdichters an eine mit dem Kältemittelverdichter in Wirkverbindung stehende Vorrichtung, vorzugsweise an eine Montageplatte eines Kühlgerätes, das Verbindungsbauteil umfassend ein inneres Element und ein das innere Element umgebendes äußeres Element, wobei das innere Element eine höhere Steifigkeit als das äußere Element aufweist und wobei das äußere Element einen Funktionsabschnitt aufweist, der so ausgelegt ist, dass er sich in einem belasteten Zustand des Verbindungsbauteils sowohl am Gehäuse als auch an der Vorrichtung, vorzugsweise der Montageplatte abstützt, wobei im belasteten Zustand eine Relativbewegung des Gehäuses und der Vorrichtung zueinander und parallel zu einer axialen Richtung gegeben ist und eine Druckbelastung parallel zur axialen Richtung vorherrscht, wobei ein Freiraum vorgesehen ist, der in einer Querrichtung gesehen an den Funktionsabschnitt des äußeren Elements anschließt, wobei das innere Element und das äußere Element parallel zur Querrichtung gesehen hintereinander angeordnet sind und wobei im belasteten Zustand des Verbindungsbauteils der Funktionsabschnitt so verformt ist, dass er zumindest abschnittsweise in den Freiraum hineinragt.The present invention relates to a connecting component of a refrigerant compressor for connecting a housing of the refrigerant compressor to a device operatively connected to the refrigerant compressor, preferably to a mounting plate of a refrigerator, the connecting member comprising an inner member and an outer member surrounding the inner member, wherein the inner member has a higher rigidity than the outer member and wherein the outer member has a functional portion which is designed so that it is supported in a loaded state of the connecting member both on the housing and on the device, preferably the mounting plate, wherein in the loaded state a Relative movement of the housing and the device is given to each other and parallel to an axial direction and a compressive load is parallel to the axial direction prevailing, with a free space is provided, seen in a transverse direction a n adjoins the functional portion of the outer member, wherein the inner member and the outer member are arranged parallel to the transverse direction seen one behind the other and wherein in the loaded state of the connecting member of the functional portion is deformed so that it projects at least partially into the space.

STAND DER TECHNIKSTATE OF THE ART

Gemäß dem Stand der Technik werden zur schwingungstechnischen Entkopplung eines Kältemittelverdichters von einer mit dem Kältemittel in Wirkverbindung stehenden Vorrichtung, insbesondere von einem Kühlgerät, Verbindungsbauteile verwendet. D.h. der Kältemittelverdichter ist über die Verbindungsbauteile an die Vorrichtung angebunden bzw. mit dieser verbunden. Die Verbindungsbauteile umfassen üblicherweise eine Hülse, insbesondere aus Metall, welche radial von einem Gummielement mit einer typischen Härte von 40 bis 50 Shore A umgeben ist.According to the prior art, connecting components are used for the vibration-related decoupling of a refrigerant compressor from a device operatively connected to the refrigerant, in particular from a cooling device. That the refrigerant compressor is connected via the connecting components to the device or connected thereto. The connecting components usually comprise a sleeve, in particular of metal, which is surrounded radially by a rubber element with a typical hardness of 40 to 50 Shore A.

Gummi weist jedoch eine Reihe von Nachteilen auf, die die Schwingungsentkopplung negativ beeinflussen. Insbesondere die hohe dynamische Steifigkeit von Gummi und dessen Inkompressibilität in Verbindung mit der Art der Montage, die u.a. eine hohe Quersteifigkeit des Verbindungsbauteils bewirkt, machen eine hinreichend gute Schwingungsentkopplung, speziell bei niedrigen Frequenzen, nahezu unmöglich.However, rubber has a number of disadvantages that adversely affect vibration decoupling. In particular, the high dynamic stiffness of rubber and its incompressibility in connection with the type of assembly, which i.a. causes a high transverse stiffness of the connecting component, make a sufficiently good vibration isolation, especially at low frequencies, almost impossible.

Andererseits wird Gummi trotzdem aus Kostengründen eingesetzt. Insbesondere bei Massenprodukten, wie z.B. Kühlgeräten, ist der Kostendruck enorm groß, weshalb Gummi bevorzugt als Material verwendet wird.On the other hand, rubber is still used for cost reasons. Especially for mass products, such as Refrigerators, the cost pressure is enormous, which is why rubber is preferably used as a material.

Aus der JP 2012026623 A ist ein Antivibrationsbauteil für einen Kältemittelverdichter zur Anbindung eines Gehäuses des Kältemittelverdichters an eine Basisplatte eines Kühlschranks bekannt. Das Antivibrationsbauteil weist einen inneren Abschnitt und einen äußeren Abschnitt auf, wobei zwischen den Abschnitten ein Freiraum ausgebildet ist und die Abschnitte jeweils in Richtung des Freiraums gewölbt sind. Die Abschnitte sind an ihrer Oberseite miteinander verbunden, sodass sich beide Abschnitte im Bereich ihres oberen Endes am Gehäuse abstützen. Mit ihren unteren Enden stützen sich beide Abschnitte stets - und damit insbesondere bei axialer Belastung - an der Basisplatte ab.From the JP 2012026623 A For example, an anti-vibration component for a refrigerant compressor for connecting a housing of the refrigerant compressor to a base plate of a refrigerator is known. The anti-vibration component has an inner portion and an outer portion, wherein between the portions of a free space is formed and the portions are each curved in the direction of the free space. The sections are connected to each other at their top, so that both sections are supported on the housing in the region of their upper end. With their lower ends, both sections are always supported - and thus in particular under axial load - on the base plate.

Auch aus der JP S58195138 U und der JP 2010185447 A ist jeweils ein Verbindungsbauteil für einen Kompressor bekannt, wobei der Verbindungsbauteil einen inneren und einen äußeren Abschnitt aufweist und wobei sich beide Abschnitte bei axialer Belastung sowohl am Kompressorgehäuse als auch an einem als Montageplatte auffassbaren Element abstützen.Also from the JP S58195138 U and the JP 2010185447 A In each case, a connecting component for a compressor is known, wherein the connecting member has an inner and an outer portion and wherein both portions are supported under axial load both on the compressor housing and on a conceivable as a mounting plate element.

AUFGABE DER ERFINDUNGOBJECT OF THE INVENTION

Es ist daher Aufgabe der vorliegenden Erfindung, Mittel zur Verfügung zu stellen, die eine verbesserte Schwingungsentkopplung zwischen dem Kältemittelverdichter und der mit dem Kältemittelverdichter in Wirkverbindung stehenden Vorrichtung, insbesondere kostengünstig erlauben.It is therefore an object of the present invention to provide means which allow improved vibration isolation between the refrigerant compressor and the device operatively connected to the refrigerant compressor, in particular cost-effectively.

DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION

Kern der Erfindung zur Lösung der oben genannten Aufgabe ist es, ein Verbindungsbauteil mit einer nichtlinearen Federkennlinie vorzusehen. Hierzu wird die statische Druckvorspannung des Verbindungsbauteils, welches ein inneres Element und ein das innere Element umgebendes äußeres Element aufweist, wobei das innere Element eine höhere Steifigkeit als das äußere Element aufweist, in die Nähe einer kritischen Last gelegt. Dies wirkt sich wie ein Flachpunkt in der Verbindungselement, welches mit dem Gehäuse oder der Vorrichtung zumindest im belasteten Zustand verbunden ist.The core of the invention for achieving the abovementioned object is to provide a connecting component with a nonlinear spring characteristic. To this end, the static compressive bias of the connecting member having an inner member and an outer member surrounding the inner member, wherein the inner member has a higher rigidity than the outer member, placed in the vicinity of a critical load. This affects like a flat point in the Connecting element, which is connected to the housing or the device at least in the loaded state.

Ein belasteter Zustand des Verbindungsbauteils ist im Folgenden stets so zu verstehen, dass zumindest eine Druckkomponente vorhanden ist, die parallel zu einer axialen Richtung verläuft. Entsprechend kommt es vornehmlich bei Relativbewegungen des Gehäuses und der Vorrichtung zueinander und parallel zur axialen Richtung zum besagten belasteten Zustand des Verbindungsbauteils. Vorzugsweise verläuft eine Längsachse des Verbindungsbauteils parallel zur axialen Richtung.A loaded state of the connection component is always to be understood below as meaning that at least one pressure component is present, which runs parallel to an axial direction. Correspondingly, relative movements of the housing and the device relative to one another and parallel to the axial direction to the said loaded state of the connecting component occur. Preferably, a longitudinal axis of the connecting member is parallel to the axial direction.

Erfindungsgemäß ist weiters ein Freiraum, vorzugsweise in Form eines Spalts vorgesehen, der in einer Querrichtung, die quer, vorzugsweise normal zur axialen Richtung verläuft, an den Funktionsabschnitt anschließt. Grundsätzlich kann dabei der Freiraum bzw. der Spalt vom Funktionsabschnitt aus gesehen in Richtung inneres Element an den Funktionsabschnitt anschließen oder in entgegengesetzter Richtung gesehen. Vorzugsweise ist der Freiraum bzw. Spalt in einem unbelasteten Zustand des Verbindungsbauteils frei, wobei im unbelasteten Zustand keine Druckkomponente in axialer Richtung vorliegt.According to the invention, a free space is provided, preferably in the form of a gap, which adjoins the functional section in a transverse direction which extends transversely, preferably perpendicular to the axial direction. In principle, the free space or the gap from the functional section can be connected in the direction of the inner element to the functional section or viewed in the opposite direction. Preferably, the free space or gap is free in an unloaded state of the connecting component, wherein in the unloaded state there is no pressure component in the axial direction.

Um eine im Betriebspunkt flache Federkennlinie des Verbindungsbauteils sicherzustellen, ist das äußere Element bzw. dessen Funktionsabschnitt so ausgelegt, dass dieser sich im belasteten Zustand gegenüber dem unbelasteten Zustand verformt, wenn im belasteten Zustand ein vordefinierter Druck parallel zur axialen Richtung vorherrscht. Erfindungsgemäß verformt sich der Funktionsabschnitt dabei so, dass er in den Freiraum bzw. Spalt hineinragt. D.h. der Funktionsabschnitt kann sich grundsätzlich in Richtung zum inneren Element verformen oder in entgegengesetzter Richtung - je nachdem wie der Freiraum bzw. Spalt relativ zum Funktionsabschnitt angeordnet ist. Insbesondere kann sich der Funktionsabschnitt so verformen, dass ein mittlerer Abschnitt des Funktionsabschnitts sich in den Freiraum ausbaucht.In order to ensure a flat in the operating point spring characteristic of the connecting member, the outer member or its functional portion is designed so that it deforms in the loaded state relative to the unloaded state, when in the loaded state prevails a predetermined pressure parallel to the axial direction. According to the invention, the functional section deforms so that it projects into the free space or gap. That is to say that the functional section can basically deform in the direction of the inner element or in the opposite direction - depending on how the free space or gap is arranged relative to the functional section. In particular, the functional section can deform so that a central portion of the functional section bulges in the free space.

Daher ist es bei einem Verbindungsbauteil eines Kältemittelverdichters zur Anbindung eines Gehäuses des Kältemittelverdichters an eine mit dem Kältemittelverdichter in Wirkverbindung stehende Vorrichtung, vorzugsweise an eine Montageplatte eines Kühlgerätes, das Verbindungsbauteil umfassend ein inneres Element und ein das innere Element umgebendes äußeres Element, wobei das innere Element eine höhere Steifigkeit als das äußere Element aufweist und wobei das äußere Element einen Funktionsabschnitt aufweist, der so ausgelegt ist, dass er sich in einem belasteten Zustand des Verbindungsbauteils sowohl am Gehäuse als auch an der Vorrichtung, vorzugsweise der Montageplatte abstützt, erfindungsgemäß vorgesehen, dass ein Freiraum vorgesehen ist, der in einer Querrichtung gesehen an den Funktionsabschnitt des äußeren Elements anschließt, wobei das innere Element und das äußere Element parallel zur Querrichtung gesehen hintereinander angeordnet sind und wobei im belasteten Zustand des Verbindungsbauteils der Funktionsabschnitt so verformt ist, dass er zumindest abschnittsweise in den Freiraum hineinragt.Therefore, in a connecting member of a refrigerant compressor for connecting a housing of the refrigerant compressor to a device operatively connected to the refrigerant compressor, preferably to a mounting plate of a refrigerator, the connecting member comprising an inner member and an outer member surrounding the inner member, wherein the inner member has a higher rigidity than the outer member and wherein the outer member has a functional portion which is designed so that it is supported in a loaded state of the connecting member on both the housing and on the device, preferably the mounting plate, according to the invention provided that a Free space is provided, which, viewed in a transverse direction, adjoins the functional portion of the outer element, wherein the inner element and the outer element are arranged one behind the other, viewed parallel to the transverse direction, and wherein in the loaded Condition of the connecting member of the functional portion is deformed so that it protrudes at least partially into the free space.

Das innere und das äußere Element können im Wesentlichen kreisförmige Querschnitte aufweisen. In diesem Fall umgibt das äußere Element das innere Element radial.The inner and outer members may have substantially circular cross-sections. In this case, the outer element surrounds the inner element radially.

Vorzugsweise kann der Funktionsabschnitt so ausgelegt werden, dass dessen Verformung als Ausknicken erfolgt. Entsprechend ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass der verformte Funktionsabschnitt einen Abschnitt mit einem Knick umfasst, wobei der den Knick aufweisende Abschnitt des Funktionsabschnitts zumindest teilweise in den Freiraum hinein ragt.Preferably, the functional portion can be designed so that its deformation takes place as buckling. Accordingly, it is provided in a preferred embodiment of the connecting component according to the invention that the deformed functional portion comprises a portion having a kink, wherein the portion of the functional portion having the kink at least partially protrudes into the free space.

Um dieses derart instabil gewordene System bei zu hohen Axialkräften wieder zu stabilisieren, ist es erfindungsgemäß vorgesehen, dass im belasteten Zustand des Verbindungsbauteils der verformte Funktionsabschnitt zumindest teilweise an einem Anlageteil des Verbindungsbauteils anliegt, welcher Anlageteil in der Querrichtung gesehen an den Freiraum anschließt. Hierdurch wird ein noch stärkeres Verformen bzw. Ausknicken des Funktionsabschnitts unterbunden.In order to stabilize this system which has become so unstable with excessive axial forces, it is provided according to the invention that, in the loaded state of the connecting component, the deformed functional portion bears at least partially against an abutment part of the connecting component, which abutment part adjoins the free space in the transverse direction. As a result, an even greater deformation or buckling of the functional section is prevented.

Eine konstruktiv besonders einfache und kostengünstige Herstellung des erfindungsgemäßen Verbindungsbauteils wird ermöglicht, indem sich der Funktionsabschnitt in Richtung inneres Element verformt bzw. ausknickt und am inneren Element anliegt. Vorzugsweise verformt sich das innere Element im belasteten Zustand nicht. Vorzugsweise stützt sich das innere Element im belasteten Zustand nicht an Gehäuse und Vorrichtung gleichzeitig ab, besonders bevorzugt nur am Gehäuse oder nur an der Vorrichtung. Entsprechend ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass der Anlageteil des Verbindungsbauteils durch das innere Element ausgebildet ist.A structurally particularly simple and cost-effective production of the connecting component according to the invention is made possible by the functional section deformed or buckled in the direction of the inner element and rests against the inner element. Preferably, the inner element does not deform in the loaded state. Preferably, the inner element does not support the housing and device at the same time in the loaded state, particularly preferably only on the housing or only on the device. Accordingly, it is provided in a preferred embodiment of the connecting component according to the invention that the contact part of the connecting member is formed by the inner member.

Erfindungsgemäß ist es vorgesehen, dass das äußere Element einen inneren, näher beim inneren Element angeordneten Abschnitt und einen äußeren Abschnitt aufweist, wobei der Funktionsabschnitt durch einen der beiden Abschnitte ausgebildet ist und von den beiden Abschnitten sich nur der Funktionsabschnitt im belasteten Zustand des Verbindungsbauteils sowohl am Gehäuse als auch an der Vorrichtung, vorzugsweise der Montageplatte, abstützt. Das äußere Abschnitt ist in Querrichtung und nach außen gesehen hinter dem inneren Abschnitt angeordnet, wobei die Querrichtung quer, vorzugsweise normal zur axialen Richtung steht.According to the invention, it is provided that the outer element has an inner, closer to the inner member arranged portion and an outer portion, wherein the functional portion is formed by one of the two sections and of the two sections, only the functional portion in the loaded state of the connecting member both Housing and on the device, preferably the mounting plate supported. The outer portion is arranged transversely and outwardly behind the inner portion, wherein the Transverse transverse, preferably normal to the axial direction.

Vorzugsweise weisen der äußere und der innere Abschnitt jeweils einen im Wesentlichen kreisringförmigen Querschnitt auf.Preferably, the outer and the inner portion each have a substantially annular cross-section.

Der genannte belastete Zustand schließt nicht aus, dass es auch weitere belastete Zustände gibt, in denen beide Abschnitte sich sowohl am Gehäuse als auch an der Vorrichtung abstützen. Beispielsweise ist eine stufenweise Abstützung eines Abschnitts denkbar, bei welcher stufenweisen Abstützung sich dieser Abschnitt im belasteten Zustand ausschließlich am Gehäuse oder der Vorrichtung abstützt und bei welcher stufenweisen Abstützung sich dieser Abschnitt in einem weiteren belasteten Zustand mit weiter erhöhter Druckkomponente parallel zur axialen Richtung sowohl am Gehäuse als auch an der Vorrichtung abstützt. Eine solche weiter erhöhte Druckkomponente kann sich vorzugsweise bei einer weiteren Annäherung des Gehäuses zur Vorrichtung parallel zur axialen Richtung einstellen.Said loaded state does not exclude that there are also other loaded states in which both sections are supported on both the housing and on the device. For example, a stepwise support of a section is conceivable in which stepwise support this section is supported only on the housing or the device in the loaded state and in which stepwise support, this section in a further loaded state with further increased pressure component parallel to the axial direction both on the housing as well as supported on the device. Such a further increased pressure component may preferably be set in a further approach of the housing to the device parallel to the axial direction.

Um im belasteten Zustand Raum für die Verformung bzw. für das Ausknicken jenes Abschnitts zur Verfügung zu stellen und damit eine kontrollierte Verformung bzw. ein kontrolliertes Ausknicken jenes Abschnitts zu ermöglichen, der den Funktionsabschnitt ausbildet, ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass der Freiraum zumindest abschnittsweise zwischen dem inneren Abschnitt und dem äußeren Abschnitt ausgebildet ist. D.h. der Freiraum ermöglicht eine Verformung jenes Abschnitts, der sich im belasteten Zustand des Verbindungsbauteils sowohl am Gehäuse als auch an der Vorrichtung abstützt, in Richtung des anderen Abschnitts.In order to provide space for the deformation or for the buckling of that section in the loaded state and thus to enable a controlled deformation or a controlled buckling of that section which forms the functional section, it is provided in a preferred embodiment of the connecting component according to the invention, that the free space is at least partially formed between the inner portion and the outer portion. That the space allows deformation of that portion which is supported in the loaded state of the connecting member both on the housing and on the device, in the direction of the other portion.

Um bei hohen Druckspannungen, bei welchen der den Funktionsabschnitt ausbildende Abschnitt verformt ist, das solcherart instabil gewordene System wieder zu stabilisieren, ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass der Anlageteil durch den anderen der beiden Abschnitte ausgebildet wird. D.h. der den Funktionsabschnitt ausbildende Abschnitt stützt sich am anderen Abschnitt ab. Vorzugsweise verformt sich der andere Abschnitt dabei nicht selbst bzw. knickt selbst nicht aus.At high compressive stresses at which the functional portion forming portion is deformed, the In a preferred embodiment of the connecting component according to the invention, it is provided that the system part is formed by the other of the two sections. That is, the functional portion forming portion is supported on the other portion. Preferably, the other section does not deform itself or does not buckle itself.

Um das Verformen bzw. Ausknicken des anderen Abschnitts zu verhindern und damit ein Abstützen des sich verformenden bzw. ausknickenden Abschnitts am anderen Abschnitt zu ermöglichen, stützt sich der andere Abschnitt im belasteten Zustand nur am Gehäuse oder der Vorrichtung, aber nicht an beiden gleichzeitig, ab. Vorzugsweise stützt sich der benachbarte Abschnitt dabei mit einem Endbereich am Gehäuse oder der Vorrichtung ab und ein anderer Endbereich des benachbarten Abschnitts kann sich im belasteten Zustand gegenüber der Vorrichtung oder dem Gehäuse bewegen bzw. ist gegenüber der Vorrichtung oder dem Gehäuse frei.In order to prevent the deformation or buckling of the other portion and thus to allow a supporting of the deforming or buckling portion on the other portion, the other portion is supported in the loaded state only on the housing or the device, but not both at the same time , Preferably, the adjacent portion is supported with an end portion on the housing or the device and another end portion of the adjacent portion may move in the loaded state with respect to the device or the housing or is free relative to the device or the housing.

Der Grad der Instabilität des Systems bzw. des äußeren Elements bei geringeren Belastungen kann durch die Wahl der Wandstärke des sich verformenden Abschnitts eingestellt werden. Eine hinreichend große Wandstärke verhindert dabei eine zu große Instabilität bei geringer Belastung. Da der andere Abschnitt in erster Linie nur eine abstützende Funktion für den sich verformenden Abschnitt erfüllen muss, kann dessen Wandstärke relativ klein gehalten werden. Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils ist es daher vorgesehen, dass der Funktionsabschnitt in der Querrichtung gesehen zumindest abschnittsweise eine größere Wandstärke aufweist als der andere der beiden Abschnitte. Somit kann sogar Material beim anderen Abschnitt eingespart werden. Die Wandstärke wird dabei vorzugsweise im unbelasteten Zustand des Verbindungsbauteils gemessen.The degree of instability of the system or outer member at lower loads can be adjusted by choosing the wall thickness of the deforming portion. A sufficiently large wall thickness prevents too much instability at low load. Since the other portion only has to fulfill a supporting function for the deforming portion in the first place, its wall thickness can be kept relatively small. In a preferred embodiment of the connecting component according to the invention, it is therefore provided that the functional section seen in the transverse direction, at least in sections, a greater wall thickness than the other of the two sections. Thus, even material can be saved at the other section. The wall thickness is here preferably measured in the unloaded state of the connecting component.

Um ein Abstützen bzw. Anliegen des sich verformenden Abschnitts am anderen Abschnitt sicher zu gewährleisten, muss der andere Abschnitt in axialer Richtung hinreichend dimensioniert werden, insbesondere in Relation zum sich verformenden Abschnitt. Entsprechend ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass der Funktionsabschnitt im unbelasteten Zustand des Verbindungsbauteils in einer axialen Richtung gesehen eine geringere Länge aufweist als der andere der beiden Abschnitte, wobei die Querrichtung quer zur axialen Richtung verläuft.In order to ensure a support or concern of the deforming portion on the other section safely, the other section in the axial direction must be sufficiently dimensioned, in particular in relation to the deforming section. Accordingly, it is provided in a preferred embodiment of the connecting component according to the invention that the functional portion seen in the unloaded state of the connecting member in an axial direction has a shorter length than the other of the two sections, wherein the transverse direction is transverse to the axial direction.

Entsprechend der Verformung des sich verformenden Abschnitts ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass der Funktionsabschnitt in einer axialen Richtung gesehen im unbelasteten Zustand des Verbindungsbauteils eine größere Länge aufweist als im belasteten Zustand des Verbindungsbauteils, wobei die Querrichtung quer zur axialen Richtung verläuft. Die Verformung kann also grundsätzlich beliebig sein, solange sie in axialer Richtung gesehen zu einer Längenreduktion des sich verformenden Abschnitts führt.According to the deformation of the deforming portion, it is provided in a preferred embodiment of the connecting component according to the invention that the functional portion seen in an axial direction in the unloaded state of the connecting member has a greater length than in the loaded state of the connecting member, wherein the transverse direction is transverse to the axial direction , The deformation can thus be basically arbitrary, as long as it leads to a reduction in length of the deforming section as seen in the axial direction.

Um eine konstruktiv und herstellungstechnisch besonders einfache Realisierung des äußeren Elements zu ermöglichen, ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass der Funktionsabschnitt durch den äußeren Abschnitt ausgebildet ist.In order to enable a structurally and manufacturing technology particularly simple realization of the outer element, it is provided in a preferred embodiment of the connecting component according to the invention, that the functional portion is formed by the outer portion.

Die beiden Abschnitte weisen in axialer Richtung gesehen jeweils einen ersten und einen zweiten Endbereich auf. Um eine konstruktiv und herstellungstechnisch besonders einfache Realisierung des äußeren Elements zu ermöglichen, ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass die beiden Abschnitte, vorzugsweise im Bereich eines Endbereichs des jeweiligen Abschnitts, miteinander verbunden sind. Durch die Verbindung der beiden Abschnitte wird zudem einer ungewünschten zu großen Instabilität des äußeren Elements bei hohen Druckbelastungen entgegengewirkt.The two sections, as seen in the axial direction, each have a first and a second end region. In order to enable a structurally and manufacturing technology particularly simple realization of the outer element, it is in a preferred embodiment of the invention Connection component provided that the two sections, preferably in the region of an end portion of the respective section, are interconnected. In addition, the connection of the two sections counteracts an undesirable, too great instability of the outer element under high pressure loads.

Um insbesondere den Zusammenbau bzw. die Herstellung des Verbindungsbauteils zu vereinfachen, ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass das äußere Element einstückig ausgeführt ist.In order to simplify in particular the assembly or the production of the connecting component, it is provided in a preferred embodiment of the connecting component according to the invention that the outer element is made in one piece.

Vorzugsweise ist das äußere Element elastisch und wenig bis gar nicht kompressibel. Entsprechend ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Verbindungsbauteils vorgesehen, dass das äußere Element aus Gummi oder einem Elastomer gefertigt ist. Dabei kann Gummi sowohl aus einem natürlichen als auch aus einem synthetischen Material, insbesondere Kautschuk, hergestellt sein. Das Elastomer ist entsprechend wenig bis gar nicht kompressibel.Preferably, the outer element is elastic and little to no compressible. Accordingly, it is provided in a preferred embodiment of the connecting component according to the invention that the outer element is made of rubber or an elastomer. In this case, rubber can be made both from a natural and from a synthetic material, in particular rubber. The elastomer is correspondingly little to no compressible.

Analog zum oben Gesagten ist erfindungsgemäß ein Kältemittelverdichter vorgesehen, umfassend ein hermetisch dichtes Gehäuse sowie eine im Inneren des Gehäuses angeordnete Antriebseinheit mit einer Kolben-Zylinder-Einheit zur zyklischen Verdichtung eines Kältemittels und einem Elektromotor zum Antrieb der Kolben-Zylinder-Einheit, wobei der Kältemittelverdichter weiters mindestens ein erfindungsgemäßes Verbindungsbauteil zur Anbindung des Gehäuses an eine mit dem Kältemittelverdichter in Wirkverbindung stehende Vorrichtung, vorzugsweise an eine Montageplatte eines Kühlgerätes, umfasst.Analogous to the above, a refrigerant compressor is provided according to the invention, comprising a hermetically sealed housing and a drive unit disposed inside the housing with a piston-cylinder unit for cyclically compressing a refrigerant and an electric motor for driving the piston-cylinder unit, wherein the refrigerant compressor Furthermore, at least one connecting element according to the invention for connecting the housing to a device operatively connected to the refrigerant compressor, preferably to a mounting plate of a cooling device, comprises.

Weiters ist im Einklang mit dem oben Gesagten erfindungsgemäß ein System vorgesehen, das erfindungsgemäße System umfassend einen erfindungsgemäßen Kältemittelverdichter sowie eine mit dem Kältemittelverdichter in Wirkverbindung stehende Vorrichtung, vorzugsweise ein Kühlgerät, wobei die Vorrichtung eine Montageplatte umfasst, an welche das Gehäuse des Kältemittelverdichters mit dem mindestens einen Verbindungsbauteil angebunden ist, wobei sich im belasteten Zustand des Verbindungsbauteils der Funktionsabschnitt sowohl am Gehäuse als auch an der Montageplatte abstützt.Furthermore, according to the invention a system is provided in accordance with the above, the inventive system comprising a refrigerant compressor according to the invention and a with the refrigerant compressor operatively connected device, preferably a cooling device, wherein the device comprises a mounting plate to which the housing of the refrigerant compressor is connected to the at least one connecting member, wherein in the loaded state of the connecting member of the functional portion is supported both on the housing and on the mounting plate ,

Um sicherzustellen, dass sich im belasteten Zustand der Anlageteil, insbesondere der andere, sich nicht verformende Abschnitt nur am Gehäuse abstützen kann, ist es bei einer bevorzugten Ausführungsform des erfindungsgemäßen Systems vorgesehen, dass eine Öffnung und/oder eine Ausnehmung und/oder eine Abstufung in der Montageplatte vorgesehen ist, in welche im belasteten Zustand des Verbindungsbauteils der Anlageteil hineinragt. Vorzugsweise bewegt sich der Anlageteil, insbesondere jener Teil des anderen Abschnitts, mit dem der andere Abschnitt im belasteten Zustand in die Öffnung, Ausnehmung oder Abstufung der Montageplatte hineinragt, beim Übergang vom unbelasteten Zustand in den belasteten Zustand auf die Montageplatte zu. Vorzugsweise ragt der Anlageteil, insbesondere der andere Abschnitt im unbelasteten Zustand nicht in die Öffnung, Ausnehmung oder Abstufung der Montageplatte hinein.To ensure that in the loaded state of the system part, in particular the other, non-deforming portion can be supported only on the housing, it is provided in a preferred embodiment of the system according to the invention that an opening and / or recess and / or gradation in the mounting plate is provided, into which projects in the loaded state of the connecting member of the system part. Preferably, the system part, in particular that part of the other section, with which the other section projects in the loaded state into the opening, recess or step of the mounting plate, moves toward the mounting plate during the transition from the unloaded state to the loaded state. Preferably, the plant part, in particular the other portion in the unloaded state does not protrude into the opening, recess or step of the mounting plate.

KURZE BESCHREIBUNG DER FIGURENBRIEF DESCRIPTION OF THE FIGURES

Die Erfindung wird nun anhand eines Ausführungsbeispiels näher erläutert. Die Zeichnungen sind beispielhaft und sollen den Erfindungsgedanken zwar darlegen, ihn aber keinesfalls einengen oder gar abschließend wiedergeben.The invention will now be explained in more detail with reference to an embodiment. The drawings are exemplary and are intended to illustrate the inventive idea, but in no way restrict it or even reproduce it.

Dabei zeigt:

Fig. 1
eine Seitenansicht eines Kältemittelverdichters
Fig. 2
eine Schnittansicht durch ein aus dem Stand der Technik bekanntes Verbindungsbauteil, gemäß der Schnittlinie A-A in Fig. 1
Fig. 3
eine Schnittansicht durch eine Ausführungsform eines erfindungsgemäßen Verbindungsbauteils in einem unbelasteten Zustand, wobei die Schnittansicht analog zu Fig. 2 ist
Fig. 4
eine Schnittansicht wie Fig. 3, wobei das Verbindungsbauteil in einem belasteten Zustand vorliegt
Fig. 5
eine Schnittansicht durch eine weitere Ausführungsform eines erfindungsgemäßen Verbindungsbauteils in einem unbelasteten Zustand, wobei die Schnittansicht analog zu Fig. 2 ist
Fig. 6
eine Schnittansicht wie Fig. 5, wobei das Verbindungsbauteil in einem belasteten Zustand vorliegt
Showing:
Fig. 1
a side view of a refrigerant compressor
Fig. 2
a sectional view through a known from the prior art connecting member, according to the section line AA in Fig. 1
Fig. 3
a sectional view through an embodiment of a connecting member according to the invention in an unloaded state, wherein the sectional view is analogous to Fig. 2 is
Fig. 4
a sectional view like Fig. 3 wherein the connecting member is in a loaded state
Fig. 5
a sectional view through a further embodiment of a connecting member according to the invention in an unloaded state, wherein the sectional view is analogous to Fig. 2 is
Fig. 6
a sectional view like Fig. 5 wherein the connecting member is in a loaded state

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS FOR CARRYING OUT THE INVENTION

In der Seitenansicht der Fig. 1 ist ein Kältemittelverdichter 1 mit einem Gehäuse 2 zu sehen, wobei im Inneren des Gehäuses 2 eine Antriebseinheit mit einer Kolben-Zylinder-Einheit zur zyklischen Verdichtung eines Kältemittels und einem Elektromotor zum Antrieb der Kolben-Zylinder-Einheit vorgesehen ist (nicht dargestellt). Das Gehäuse 2 ist in Fig. 1 über Verbindungsbauteile 4 gemäß dem Stand der Technik mit einer Montageplatte 26 eines Kühlgerätes 3, welches in Wirkverbindung mit dem Kältemittelverdichter 1 steht, verbunden.In the side view of Fig. 1 is a refrigerant compressor 1 to see a housing 2, wherein in the interior of the housing 2, a drive unit is provided with a piston-cylinder unit for cyclically compressing a refrigerant and an electric motor for driving the piston-cylinder unit (not shown). The housing 2 is in Fig. 1 via connection components 4 according to the prior art with a mounting plate 26 of a cooling device 3, which is in operative connection with the refrigerant compressor 1, respectively.

Wie in der Schnittansicht der Fig. 2 zu sehen ist, weisen die Verbindungsbauteile 4 gemäß dem Stand der Technik ein inneres Element 5 und ein das innere Element 5 umgebendes äußeres Element 6 auf. Das äußere Element 6 ist typischerweise aus Gummi gefertigt. Das innere Element 5 weist jedenfalls eine größere Steifigkeit als das äußere Element 6 auf, was einem Setzen des äußeren Elements 6 entgegenwirkt.As in the sectional view of Fig. 2 can be seen, the connection components 4 according to the prior art, an inner member 5 and an inner member 5 surrounding outer member 6. The outer element 6 is typically made of rubber. In any case, the inner element 5 has a greater rigidity than the outer element 6, which counteracts a setting of the outer element 6.

Das Verbindungselement 4 weist eine Längsachse 24 auf, die parallel zu einer axialen Richtung 16 verläuft. Quer, vorzugsweise normal auf die axiale Richtung 16 steht eine Querrichtung 28. Die Längsachse 24 verläuft in Querrichtung 28 gesehen durch das Zentrum des Verbindungselements 4. Von der Längsachse 24 in Querrichtung 28 nach außen gesehen ist das äußere Element 6 hinter dem inneren Element 5 angeordnet.The connecting element 4 has a longitudinal axis 24 which runs parallel to an axial direction 16. Transverse, preferably normal to the axial direction 16 is a transverse direction 28. The longitudinal axis 24 extends in the transverse direction 28 seen through the center of the connecting element 4. Seen from the longitudinal axis 24 in the transverse direction 28 to the outside, the outer element 6 is disposed behind the inner element 5 ,

Das innere Element 5 kann hülsenförmig ausgeführt sein, was die Durchführung einer Schraube (nicht dargestellt) zur Verbindung des Verbindungsbauteils 4 mit dem Gehäuse 2 ermöglicht. In Fig. 2 (wie auch in Fig. 3 und Fig. 4) ist weiters ein Stahlfederbolzen 25 erkennbar, auf welchen eine Feder (nicht dargestellt) gepresst werden kann, mittels welcher die Antriebseinheit (nicht dargestellt) im Gehäuse 2 gelagert ist.The inner member 5 may be sleeve-shaped, which allows the passage of a screw (not shown) for connecting the connecting member 4 to the housing 2. In Fig. 2 (as well as in Fig. 3 and Fig. 4 ) is further a steel spring pin 25 can be seen on which a spring (not shown) can be pressed, by means of which the drive unit (not shown) is mounted in the housing 2.

Gemäß dem Stand der Technik werden aus Gründen der Transportbelastungen Lösungen verwendet, bei welchen das äußere Element 6 rund um die Längsachse 24 umfänglich eingeschlossen ist, insbesondere von Teilen der Vorrichtung 3, vorzugsweise von der Montageplatte 26, wie in Fig. 2 zu sehen ist. Im Zusammenspiel mit der versteifenden Wirkung des inneren Elements 5 kommt somit die Inkompressibilität von Gummi voll zu tragen, da die Schubverformbarkeit von Gummi nicht ausgenutzt werden kann. Dies wirkt einer Schwingungsentkopplung zwischen Kältemittelverdichter 1 und Kühlgerät 3 entgegen.According to the prior art solutions are used for reasons of transport loads, in which the outer member 6 is circumferentially enclosed around the longitudinal axis 24, in particular of parts of the device 3, preferably of the mounting plate 26, as in Fig. 2 you can see. In conjunction with the stiffening action of the inner member 5 thus comes the incompressibility of rubber fully wear, since the shear ductility of rubber can not be exploited. This counteracts a vibration decoupling between the refrigerant compressor 1 and the cooling device 3.

Weiters bildet das innere Element 5 im dargestellten Ausführungsbeispiel eine Transportsicherung 7 an seinem in axialer Richtung 16 gesehen freien Ende aus, indem das innere Element 5 sich dort in Querrichtung 28 erweitert. Dies führt dazu, dass eine Ausdehnung 35 der Transportsicherung 7 in Querrichtung 28 größer ist als eine Ausdehnung 34 einer Öffnung 29 der Montageplatte 26, durch welche Öffnung 29 das innere Element 5 und das äußere Element 6 in axialer Richtung 16 hindurchgeführt sind. Dies wiederum verhindert, dass der Kältemittelverdichter 1 in axialer Richtung 16 von der Montageplatte 26 abgezogen werden kann.Furthermore, the inner element 5 forms in the illustrated embodiment, a transport safety device 7 at its seen in the axial direction 16 free end by the inner member 5 expands there in the transverse direction 28. This results in that an extent 35 of the transport lock 7 in the transverse direction 28 is greater than an extension 34 of an opening 29 of the mounting plate 26, through which opening 29, the inner member 5 and the outer member 6 are passed in the axial direction 16. This in turn prevents the refrigerant compressor 1 in the axial direction 16 can be removed from the mounting plate 26.

Das äußere Element 6 bildet über der Transportsicherung 7 eine Dämpfungsschicht 32 aus. Die Dämpfungsschicht 32 verhindert, dass es zu einem harten, metallischen Kontakt zwischen der Transportsicherung 7 und der Montageplatte 26 kommt, insbesondere falls der Kältemittelverdichter 1 fehlerhaft montiert worden sein sollte und Kältemittelverdichter 1 und Montageplatte 26 gegeneinander vorgespannt sein sollten.The outer element 6 forms over the transport lock 7 a damping layer 32. The cushioning layer 32 prevents hard metallic contact between the transportation lock 7 and the mounting plate 26, particularly if the refrigerant compressor 1 should have been improperly mounted and the refrigerant compressor 1 and mounting plate 26 should be biased against each other.

Die Schwingungsentkopplung zwischen Kältemittelverdichter 1 und Kühlgerät 3 wird durch erfindungsgemäße Verbindungsbauteile 4 dramatisch verbessert. Fig. 3 und Fig. 4 zeigen eine erste Ausführungsvariante eines solchen erfindungsgemäßen Verbindungsbauteils 4 in einer Schnittansicht analog zu Fig. 2. Dabei zeigt Fig. 3 das erfindungsgemäße Verbindungsbauteil 4 in einem unbelasteten Zustand ohne Druckkomponente parallel zur axialen Richtung 16. Fig. 4 zeigt hingegen das erfindungsgemäße Verbindungsbauteil 4 in einem belasteten Zustand mit zumindest einer Druckkomponente parallel zur axialen Richtung 16, sodass das Gehäuse 2 und die Montageplatte 26 parallel zur axialen Richtung 16 gegeneinander gedrückt werden.The vibration decoupling between refrigerant compressor 1 and cooling device 3 is dramatically improved by connecting components 4 according to the invention. Fig. 3 and Fig. 4 show a first embodiment of such a connecting component 4 according to the invention in a sectional view analogous to Fig. 2 , It shows Fig. 3 the connection component 4 according to the invention in an unloaded state without pressure component parallel to the axial direction 16th Fig. 4 In contrast, the connection component 4 according to the invention in a loaded state with at least one pressure component parallel to the axial direction 16, so that the housing 2 and the mounting plate 26 are pressed against each other parallel to the axial direction 16.

Das äußere Element 6 ist vorzugsweise aus Gummi oder einem Elastomer mit niedriger oder keiner Kompressibilität gefertigt. Das innere Element 5 ist vorzugsweise aus Metall, z.B. Stahl oder Edelstahl hergestellt.The outer element 6 is preferably made of rubber or an elastomer with little or no compressibility manufactured. The inner element 5 is preferably made of metal, eg steel or stainless steel.

Das äußere Element 6 weist einen äußeren Abschnitt 9 und einen inneren Abschnitt 10 auf, wobei der innere Abschnitt 10 näher beim inneren Element 5 angeordnet ist. Von der Längsachse 24 in Querrichtung 28 nach außen gesehen ist der äußere Abschnitt 9 hinter dem inneren Abschnitt 10 angeordnet. In axialer Richtung 16 wird der äußere Abschnitt 9 von einem ersten Endbereich 11 und einem zweiten Endbereich 12 begrenzt. Der innere Abschnitt 10 wird in axialer Richtung 16 von einem ersten Endbereich 13 und einem zweiten Endbereich 14 begrenzt. Der äußere Abschnitt 9 und der innere Abschnitt 10 sind im Bereich ihrer zweiten Endbereiche 12, 14 miteinander verbunden. Vorzugsweise ist das äußere Element 6 einstückig hergestellt.The outer member 6 has an outer portion 9 and an inner portion 10, wherein the inner portion 10 is disposed closer to the inner member 5. Seen from the longitudinal axis 24 in the transverse direction 28 to the outside of the outer portion 9 is disposed behind the inner portion 10. In the axial direction 16, the outer portion 9 is bounded by a first end portion 11 and a second end portion 12. The inner portion 10 is bounded in the axial direction 16 by a first end portion 13 and a second end portion 14. The outer portion 9 and the inner portion 10 are connected to each other in the region of their second end portions 12, 14. Preferably, the outer element 6 is made in one piece.

Im gezeigten Ausführungsbeispiel weisen die Abschnitte 9, 10 eine Symmetrie um die Längsachse 24 auf, womit der äußere Abschnitt 9 und der innere Abschnitt 10 normal auf die Längsachse 24 jeweils zumindest abschnittsweise einen kreisringförmigen Querschnitt aufweisen. Die Querrichtung 28 kann daher im gezeigten Ausführungsbeispiel auch als radiale Richtung angesehen werden. Grundsätzlich sind aber natürlich auch andere Querschnittsformen möglich, z.B. eine elliptische oder vieleckige, insbesondere rechteckige oder quadratische, Querschnittsform.In the illustrated embodiment, the sections 9, 10 have a symmetry about the longitudinal axis 24, whereby the outer portion 9 and the inner portion 10 normal to the longitudinal axis 24 each have at least partially an annular cross-section. The transverse direction 28 can therefore also be considered in the embodiment shown as a radial direction. In principle, however, other cross-sectional shapes are also possible, e.g. an elliptical or polygonal, in particular rectangular or square, cross-sectional shape.

Das äußere Element 6 ist mit dem inneren Element 5 verbunden. Vorzugsweise ist das äußere Element 6 im Bereich des zweiten Endbereichs 14 des inneren Abschnitts 10 mit dem inneren Element 5 über einen Presssitz verbunden. Im gezeigten Ausführungsbeispiel schließt in axialer Richtung 16 gesehen ein weiterer Spalt 33 an den Presssitz an, welcher weitere Spalt 33 somit abschnittsweise zwischen dem inneren Element 5 und dem inneren Abschnitt 10 des äußeren Elements 6 ausgebildet ist. Der weitere Spalt 33 dient dazu, einen direkten Kontakt zwischen dem inneren Element 5, dem inneren Abschnitt 10 und der Montageplatte 26 zu vermeiden. Bzw. ermöglicht der weitere Spalt 33, dass der innere Abschnitt 10 ausweichen kann, wenn die Montageplatte 26 parallel zur Querrichtung 28 gegen den inneren Abschnitt 10 in Richtung inneres Element 5 drückt. Andernfalls würde sich eine sehr stark ansteigende unerwünschte Quersteifigkeit ergeben, wenn das äußere Element 6 aus Gummi gefertigt ist, da Gummi nahezu inkompressibel ist.The outer element 6 is connected to the inner element 5. Preferably, the outer member 6 is connected in the region of the second end portion 14 of the inner portion 10 with the inner member 5 via a press fit. In the exemplary embodiment shown, in the axial direction 16, another gap 33 connects to the press fit, which further gap 33 is thus in sections between the inner element 5 and the inner section 10 of the outer element 6 is trained. The further gap 33 serves to avoid a direct contact between the inner element 5, the inner portion 10 and the mounting plate 26. Respectively. allows the further gap 33 that the inner portion 10 can escape when the mounting plate 26 presses parallel to the transverse direction 28 against the inner portion 10 in the direction of inner element 5. Otherwise, a very strong unwanted transverse stiffness would result if the outer member 6 is made of rubber, since rubber is almost incompressible.

Mit den zweiten Endbereichen 12, 14 stützen sich die Abschnitte 9, 10 im gezeigten Ausführungsbeispiel am Gehäuse 2 ab. Vorzugsweise stützt sich das äußere Element 6 im Bereich der zweiten Endbereiche 12, 14 am Gehäuseboden 8 ab.With the second end regions 12, 14, the sections 9, 10 are supported on the housing 2 in the exemplary embodiment shown. Preferably, the outer element 6 is supported in the region of the second end regions 12, 14 on the housing bottom 8.

Der äußere Abschnitt 9 bildet einen Funktionsabschnitt 30 aus, wobei sich der äußere Abschnitt 9 nicht nur am Gehäuse 2 abstützt, sondern außerdem zumindest im belasteten Zustand des Verbindungsbauteils 4 mit seinem ersten Endbereich 11 an der Montageplatte 26 des Kühlgerätes 3. Der erste Endbereich 13 des inneren Abschnitts 10 ragt hingegen durch die Öffnung 29 der Montageplatte 26 hindurch. Der erste Endbereich 13 des inneren Abschnitts 10 ist somit relativ zur Montageplatte 26 in axialer Richtung 16 bewegbar und umgekehrt.The outer portion 9 forms a functional portion 30, wherein the outer portion 9 is supported not only on the housing 2, but also at least in the loaded state of the connecting member 4 with its first end portion 11 on the mounting plate 26 of the refrigerator 3. The first end portion 13 of inner portion 10, however, projects through the opening 29 of the mounting plate 26 therethrough. The first end portion 13 of the inner portion 10 is thus movable relative to the mounting plate 26 in the axial direction 16 and vice versa.

Dies hat zur Folge, dass im belasteten Zustand, wenn sich das Gehäuse 2 bzw. der Gehäuseboden 8 und die Montageplatte 26 in axialer Richtung 16 aneinander annähern, nur der äußere Abschnitt 9 bzw. der Funktionsabschnitt 30 in axialer Richtung 16 druckbeaufschlagt wird. Dabei ist der äußere Abschnitt 9 so ausgelegt, dass es zu einer Verformung des äußeren Abschnitts 9 durch Ausknicken kommt. D.h. im belasteten Zustand ist der äußere Abschnitt 9 bzw. der Funktionsabschnitt 30 ein verformter Abschnitt 27 und weist einen Knick 17 auf, vgl. Fig. 4. Der innere Abschnitt 10 hingegen wird nicht in axialer Richtung 16 druckbeaufschlagt, da sein erster Endbereich 13 im belasteten Zustand einfach gegenüber der Montageplatte 16 parallel zur axialen Richtung 16 verschoben wird bzw. ist. Entsprechend ist der innere Abschnitt 10 im belasteten Zustand auch nicht verformt.This has the consequence that in the loaded state, when the housing 2 or the housing bottom 8 and the mounting plate 26 approach each other in the axial direction 16, only the outer portion 9 and the functional portion 30 in the axial direction 16 is pressurized. In this case, the outer portion 9 is designed so that there is a deformation of the outer portion 9 by buckling. That is, in the loaded state, the outer portion 9 or the functional portion 30 is a deformed portion 27 and has a kink 17, see. Fig. 4 , The inner portion 10, however, is not in the axial Direction 16 pressurized, since its first end portion 13 in the loaded state is simply moved relative to the mounting plate 16 parallel to the axial direction 16 and is. Accordingly, the inner portion 10 is not deformed in the loaded state.

Aufgrund der Verformung des äußeren Abschnitts 9 bzw. des Funktionsabschnitts 30 kommt es zu einer Änderung von dessen Länge in axialer Richtung 16. D.h. dessen Länge 20 im unbelasteten Zustand ist größer als dessen Länge 22 im belasteten Zustand. Demgegenüber weist der innere Abschnitt 10 im belasteten Zustand eine Länge 23 auf, die genauso groß ist wie eine Länge 21 des inneren Abschnitts 10 im unbelasteten Zustand.Due to the deformation of the outer portion 9 and the functional portion 30, there is a change in its length in the axial direction 16. D. h. its length 20 in the unloaded state is greater than its length 22 in the loaded state. In contrast, the inner portion 10 in the loaded state has a length 23 which is the same size as a length 21 of the inner portion 10 in the unloaded state.

Im unbelasteten Zustand (Fig. 3) ist zwischen dem äußeren Abschnitt 9 und dem inneren Abschnitt 10 abschnittsweise ein Freiraum in Form eines Spalts 15 ausgebildet, der sich, aufgrund der im gezeigten Ausführungsbeispiel vorhandenen Symmetrie, zumindest abschnittsweise ringförmig um die Längsachse 24 erstreckt. Dieser Spalt 15 bietet Platz dafür, dass der äußere Abschnitt 9 bzw. der Funktionsabschnitt 30 im belasteten Zustand (Fig. 4) in Richtung innerer Abschnitt 10 ausknicken kann. Entsprechend ist der Spalt 15 im belasteten Zustand durch den äußeren Abschnitt 9 teilweise ausgefüllt.In the unloaded state ( Fig. 3 ) is between the outer portion 9 and the inner portion 10 sections a free space in the form of a gap 15 formed, which extends, at least in sections, annularly around the longitudinal axis 24 due to the existing symmetry in the illustrated embodiment. This gap 15 provides space for the outer section 9 or the functional section 30 in the loaded state (FIG. Fig. 4 ) in the direction of the inner portion 10 can buckle. Accordingly, the gap 15 is partially filled in the loaded state by the outer portion 9.

Das Ausknicken kann, je nach nachdem wie groß die Druckkomponente parallel zur axialen Richtung 16 ist, soweit erfolgen, bis der äußere Abschnitt 9 bzw. der Funktionsabschnitt 30 an einem Anlageteil 31 anliegt. Im Ausführungsbeispiel der Fig. 3 und Fig. 4 ist der Anlageteil 31 durch den inneren Abschnitt 10 ausgebildet. Dieses Anliegen stabilisiert den Funktionsabschnitt 30 bzw. den äußeren Abschnitt 9 bzw. das äußere Element 6.Depending on how large the pressure component is parallel to the axial direction 16, the buckling can take place until the outer section 9 or the functional section 30 abuts a contact part 31. In the embodiment of Fig. 3 and Fig. 4 the contact part 31 is formed by the inner portion 10. This concern stabilizes the functional section 30 or the outer section 9 or the outer element 6.

Insgesamt ergibt sich somit eine nichtlineare Federkennlinie des erfindungsgemäßen Verbindungsbauteils 4. Dabei kann das äußere Element 6 bzw. der äußere Abschnitt 9 bzw. der Funktionsabschnitt 30 so ausgelegt werden, dass bereits relativ niedrige Drücke parallel zur axialen Richtung 16 zu einem Ausknicken des äußeren Abschnitts 9 bzw. des Funktionsabschnitts 30 führen. Dies entspricht einem relativ instabilen Zustand bzw. einer sehr flachen Federkennlinie. Sobald der äußere Abschnitt 9 bzw. der Funktionsabschnitt 30 aber am inneren Abschnitt 10 bzw. am Anlageteil 31 anliegt, wird der äußere Abschnitt 9 stabilisiert. Dies erfolgt bei weiterer Druckerhöhung, womit eine wesentlich steilere Kennlinie bei diesen Drücken realisiert ist und sich insgesamt eine nichtlineare Federkennlinie des erfindungsgemäßen Verbindungsbauteils 4 ergibt.Overall, this results in a non-linear spring characteristic of the connecting member 4 according to the invention Outer element 6 or the outer portion 9 or the functional portion 30 are designed so that even relatively low pressures parallel to the axial direction 16 lead to a buckling of the outer portion 9 and the functional portion 30. This corresponds to a relatively unstable state or a very flat spring characteristic. But as soon as the outer portion 9 or the functional portion 30 rests against the inner portion 10 or the contact part 31, the outer portion 9 is stabilized. This is done with further pressure increase, whereby a substantially steeper characteristic is realized at these pressures and results in a total of a non-linear spring characteristic of the connecting member 4 according to the invention.

Wie stark das Ausknicken in Abhängigkeit von der Größe der Druckkomponente parallel zur axialen Richtung 16 erfolgt bzw. wie instabil das Verbindungsbauteil 4 bei relativ niedrigen Drücken ist, kann u.a. durch die Wahl einer Wandstärke 18 des äußeren Abschnitts 9 festgelegt werden. Dabei kann die Wandstärke 18 auch deutlich größer ausfallen als eine Wandstärke 19 des inneren Abschnitts 10. Die Wandstärken 18, 19 werden vorzugsweise im unbelasteten Zustand gemessen, vgl. Fig. 3.How strong the buckling in dependence on the size of the pressure component is parallel to the axial direction 16 and how unstable the connecting member 4 is at relatively low pressures, can be determined inter alia by the choice of a wall thickness 18 of the outer portion 9. In this case, the wall thickness 18 can also be significantly greater than a wall thickness 19 of the inner portion 10. The wall thicknesses 18, 19 are preferably measured in the unloaded state, see. Fig. 3 ,

Die in Fig. 5 und Fig. 6 dargestellte Ausführungsform des erfindungsgemäßen Verbindungsbauteils 4 unterscheidet sich von der Ausführungsform der Fig. 3 und Fig. 4 im Wesentlichen darin, dass das äußere Element 6 statt den beiden Abschnitten 9, 10 nur den Funktionsabschnitt 30 aufweist. Der Funktionsabschnitt 30 stützt sich zumindest im belasteten Zustand des Verbindungsbauteils 4 sowohl am Gehäuse 2 bzw. am Gehäuseboden 8 als auch an der Vorrichtung 3 bzw. an der Montageplatte 26 ab.In the Fig. 5 and Fig. 6 illustrated embodiment of the connecting member 4 according to the invention differs from the embodiment of Fig. 3 and Fig. 4 essentially in that the outer element 6 has only the functional section 30 instead of the two sections 9, 10. The functional portion 30 is supported, at least in the loaded state of the connecting component 4, both on the housing 2 or on the housing base 8 and on the device 3 or on the mounting plate 26.

Der Anlageteil 31 wird in diesem Fall durch das innere Element 5 ausgebildet, das durch die Öffnung 29 der Montageplatte 26 in axialer Richtung 16 hindurch ragt.The contact part 31 is formed in this case by the inner element 5, which projects through the opening 29 of the mounting plate 26 in the axial direction 16 therethrough.

Dies hat zur Folge, dass im belasteten Zustand, wenn sich das Gehäuse 2 bzw. der Gehäuseboden 8 und die Montageplatte 26 in axialer Richtung 16 aneinander annähern, nur das äußere Element 6 bzw. der Funktionsabschnitt 30 in axialer Richtung 16 druckbeaufschlagt wird. Dabei ist das äußere Element 6 bzw. der Funktionsabschnitt 30 so ausgelegt, dass es zu einer Verformung des Funktionsabschnitts 30 durch Ausknicken kommt. D.h. im belasteten Zustand ist der Funktionsabschnitt 30 ein verformter Abschnitt 27 und weist einen Knick 17 auf, vgl. Fig. 6. Das innere Element 5 hingegen wird nicht in axialer Richtung 16 druckbeaufschlagt, da es, wie bereits erwähnt, durch die Öffnung 29 ragt und somit im belasteten Zustand einfach gegenüber der Montageplatte 26 parallel zur axialen Richtung 16 verschoben wird bzw. ist.This has the consequence that in the loaded state, when the housing 2 or the housing bottom 8 and the mounting plate 26 approach each other in the axial direction 16, only the outer member 6 and the functional portion 30 in the axial direction 16 is pressurized. In this case, the outer element 6 or the functional portion 30 is designed so that it comes to a deformation of the functional portion 30 by buckling. That is, in the loaded state, the functional portion 30 is a deformed portion 27 and has a kink 17, see. Fig. 6 , The inner element 5, however, is not pressurized in the axial direction 16, since it, as already mentioned, protrudes through the opening 29 and thus in the loaded state is simply displaced relative to the mounting plate 26 parallel to the axial direction 16 or is.

Der Spalt 15, der im unbelasteten Zustand des Verbindungsbauteils 4 frei ist und den notwendigen Platz für die Verformung bzw. für das Ausknicken des Funktionsabschnitts 30 im belasteten Zustand des Verbindungsbauteils 4 bietet, ist entsprechend abschnittsweise zwischen dem inneren Element 5 und dem äußeren Element 6 bzw. dem Funktionsabschnitt 30 ausgebildet.The gap 15, which is free in the unloaded state of the connection component 4 and provides the necessary space for the deformation or for the buckling of the functional section 30 in the loaded state of the connection component 4, is correspondingly sectionwise between the inner element 5 and the outer element 6 or The functional section 30 is formed.

Das Ausknicken kann, je nach nachdem wie groß die Druckkomponente parallel zur axialen Richtung 16 ist, soweit erfolgen, bis der Funktionsabschnitt 30 am Anlageteil 31 bzw. am inneren Element 5 anliegt. Dieses Anliegen stabilisiert den Funktionsabschnitt 30 bzw. das äußere Element 6.Depending on how large the pressure component is parallel to the axial direction 16, the buckling can take place until the functional section 30 rests against the contact part 31 or against the inner element 5. This concern stabilizes the functional section 30 or the outer element 6.

Die Öffnung 29 ist vorzugsweise in einem stufenförmig abgesetzten Abschnitt der Montageplatte 26 angeordnet, in welchem abgesetzten Abschnitt das äußere Element 6 angeordnet ist. Durch die Stufenform wird im belasteten Zustand des Verbindungsbauteils 4 der Funktionsabschnitt 30 an seinem die Montageplatte 26 kontaktierenden Ende in Querrichtung 28 abgestützt, wenn der Funktionsabschnitt 30 in den Spalt 15 ausknickt.The opening 29 is preferably arranged in a step-stepped section of the mounting plate 26, in which stepped portion the outer element 6 is arranged. Due to the step shape is in the loaded state of Connecting member 4 of the functional portion 30 is supported at its the mounting plate 26 contacting end in the transverse direction 28 when the functional portion 30 buckles into the gap 15.

Die Dämpfungsschicht 32 auf der Transportsicherung 7 ist in Fig. 5 und Fig. 6 nicht extra dargestellt. Es kann aber natürlich eine solche vorgesehen sein, beispielsweise durch eine Beschichtung der Transportsicherung 7 mit Gummi oder sonst einem elastischen oder dämpfenden Material.The damping layer 32 on the transport lock 7 is in Fig. 5 and Fig. 6 not shown separately. However, it may of course be provided such, for example by a coating of the transport lock 7 with rubber or otherwise an elastic or damping material.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
KältemittelverdichterRefrigerant compressor
22
Gehäusecasing
33
Kühlgerätcooling unit
44
Verbindungsbauteilconnecting member
55
Inneres ElementInner element
66
Äußeres ElementOuter element
77
Transportsicherungtransport safety
88th
Gehäusebodencaseback
99
Äußerer Abschnitt des äußeren ElementsOuter section of the outer element
1010
Innerer Abschnitt des äußeren ElementsInner section of the outer element
1111
Erster Endbereich des äußeren AbschnittsFirst end of the outer section
1212
Zweiter Endbereich des äußeren AbschnittsSecond end portion of the outer portion
1313
Erster Endbereich des inneren AbschnittsFirst end of the inner section
1414
Zweiter Endbereich des inneren AbschnittsSecond end portion of the inner portion
1515
Spaltgap
1616
Axiale RichtungAxial direction
1717
Knickkink
1818
Wandstärke des äußeren AbschnittsWall thickness of the outer section
1919
Wandstärke des inneren AbschnittsWall thickness of the inner section
2020
Länge des äußeren Abschnitts im unbelasteten ZustandLength of the outer section in the unloaded state
2121
Länge des inneren Abschnitts im unbelasteten ZustandLength of the inner section in the unloaded state
2222
Länge des äußeren Abschnitts im belasteten ZustandLength of outer section in loaded condition
2323
Länge des inneren Abschnitts im belasteten ZustandLength of the inner section in loaded condition
2424
Längsachse des VerbindungsbauteilsLongitudinal axis of the connecting component
2525
StahlfederbolzenSteel spring bolt
2626
Montageplattemounting plate
2727
Eine Verformung bzw. einen Knick aufweisender AbschnittA deformation or kinked section
2828
Querrichtungtransversely
2929
Öffnung der MontageplatteOpening of the mounting plate
3030
Funktionsabschnittfunction section
3131
Anlageteilplant part
3232
Dämpfungsschicht über der TransportsicherungDamping layer over the transport lock
3333
Weiterer SpaltAnother gap
3434
Ausdehnung der Öffnung der Montageplatte in QuerrichtungExpansion of the opening of the mounting plate in the transverse direction
3535
Ausdehnung der Transportsicherung in QuerrichtungExtension of the transport lock in the transverse direction

Claims (15)

  1. Connection component (4) of a refrigerant compressor (1) for joining a housing (2) of the refrigerant compressor (1) to a device that is in operative connection with the refrigerant compressor (1), preferably to a mounting panel (26) of a refrigerator (3), the connection component (4) comprising an inner element (5) and an outer element (6) surrounding the inner element (5), wherein the inner element (5) has a higher stiffness than the outer element (6) and wherein the outer element (6) has a functional segment (30), which is designed so that in a loaded state of the connection component (4) it is supported both at the housing (2) and at the device (3), preferably the mounting panel (26), wherein in the loaded state a relative movement of the housing (2) and the device with respect to each other and parallel to an axial direction (16) is given and a compressive load prevails parallel to the axial direction (16), wherein a free space (15) is provided, which, looking in a transverse direction (28), joins the functional segment (30) of the outer element (6), wherein the inner element (5) and the outer element (6), looking parallel to the transverse direction (28), are disposed one behind the other and wherein in the loaded state of the connection component (4) the functional segment (30) is deformed so that it at least in part protrudes into the free space (15), wherein the outer element (6) has an inner segment (10) disposed closer to the inner element (5) and an outer segment (9), wherein the functional segment (30) is formed by one of the two segments (9, 10), characterized in that of the two segments (9, 10) only the functional segment (30) is supported both at the housing (2) and at the device (3), preferably the mounting panel (26), in the loaded state of the connection component (4) and in that in the loaded state of the connection component (4) the deformed functional segment (30) abuts at least partially at an abutment member (31) of the connection component (4), which abutment member (31), looking in the transverse direction (28), joins the free space (15).
  2. Connection component (4) according to Claim 1, characterized in that the deformed functional segment (30) comprises a segment (27) with a bend (17), wherein the segment (27) of the functional segment (30) having the bend (17) at least partially protrudes into the free space (15).
  3. Connection component (4) according to one of Claims 1 to 2, characterized in that the abutment member (31) of the connection component (4) is formed by the inner element (5) .
  4. Connection component (4) according to one of Claims 1 to 3, characterized in that the free space (15) is formed at least in part between the inner segment (10) and the outer segment (9).
  5. Connection component (4) according to Claim 4, characterized in that the abutment member (31) is formed by the other one of the two segments (10, 9).
  6. Connection component (4) according to one of Claims 1 to 5, characterized in that the functional segment (30), looking in the transverse direction (28), has at least in part a greater wall thickness (18) than the other one of the two segments (10, 9).
  7. Connection component (4) according to one of Claims 1 to 6, characterized in that the functional segment (30) in the unloaded state of the connection component (4) has, looking in the axial direction (16), a shorter length (20) than the other one of the two segments (10, 9), wherein the transverse direction (28) runs transverse to the axial direction (16).
  8. Connection component (4) according to one of Claims 1 to 7, characterized in that the functional segment (30), looking in the axial direction (16), has in the unloaded state of the connection component (4) a greater length (20) than in the loaded state of the connection component (4), wherein the transverse direction (28) runs transverse to the axial direction (16).
  9. Connection component (4) according to one of Claims 1 to 8, characterized in that the functional segment (30) is formed by the outer segment (9).
  10. Connection component (4) according to one of Claims 1 to 9, characterized in that the two segments (9, 10) are joined to each other, preferably in the region of an end region (11, 13) of the respective segment (9, 10).
  11. Connection component (4) according to one of Claims 1 to 10, characterized in that the outer element (6) is made in one piece.
  12. Connection component (4) according to one of Claims 1 to 11, characterized in that the outer element (6) is made of rubber or an elastomer.
  13. Refrigerant compressor (1), comprising a hermetically sealed housing (2) and a drive unit having a piston-cylinder unit for cyclic compression of a refrigerant and an electric motor to drive the piston-cylinder unit, which drive unit is disposed within the housing (2), wherein the refrigerant compressor (1) further comprises at least one connection component (4) according to one of Claims 1 to 12 for joining the housing (2) to a device that is in operative connection with the refrigerant compressor (1), preferably to a mounting panel (26) of a refrigerator (3).
  14. System comprising a refrigerant compressor (1) according to Claim 13 and a device that is in operative connection with the refrigerant compressor (1), preferably a refrigerator (3), wherein the device comprises a mounting panel (26), to which the housing (2) of the refrigerant compressor (1) is joined with the at least one connection component (4), wherein in the loaded state of the connection component (4) the functional segment (30) is supported both at the housing (2) and at the mounting panel (26).
  15. System according to Claim 14, characterized in that an opening (29) and/or a recess and/or a step is provided in the mounting panel (26), into which the abutment member (31) protrudes in the loaded state of the connection component (4).
EP16735617.9A 2015-06-30 2016-06-30 Connection component of a refrigerant compressor Active EP3317599B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM50130/2015U AT14820U1 (en) 2015-06-30 2015-06-30 Connecting component of a refrigerant compressor
PCT/EP2016/065333 WO2017001574A1 (en) 2015-06-30 2016-06-30 Connection component of a refrigerant compressor

Publications (2)

Publication Number Publication Date
EP3317599A1 EP3317599A1 (en) 2018-05-09
EP3317599B1 true EP3317599B1 (en) 2018-10-31

Family

ID=56320691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16735617.9A Active EP3317599B1 (en) 2015-06-30 2016-06-30 Connection component of a refrigerant compressor

Country Status (5)

Country Link
US (1) US10865781B2 (en)
EP (1) EP3317599B1 (en)
CN (1) CN108139139B (en)
AT (1) AT14820U1 (en)
WO (1) WO2017001574A1 (en)

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AU2018451774A1 (en) * 2018-12-06 2021-05-20 Electrolux Appliances Aktiebolag Refrigerator with a compressor
CN113606112A (en) * 2020-12-29 2021-11-05 广州赛佛科技有限公司 Pressurizing and depressurizing method and device

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Also Published As

Publication number Publication date
WO2017001574A1 (en) 2017-01-05
US20200032782A1 (en) 2020-01-30
US10865781B2 (en) 2020-12-15
EP3317599A1 (en) 2018-05-09
AT14820U1 (en) 2016-07-15
CN108139139A (en) 2018-06-08
CN108139139B (en) 2021-03-30

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