EP3714163B1 - Compressor - Google Patents

Compressor Download PDF

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Publication number
EP3714163B1
EP3714163B1 EP18827065.6A EP18827065A EP3714163B1 EP 3714163 B1 EP3714163 B1 EP 3714163B1 EP 18827065 A EP18827065 A EP 18827065A EP 3714163 B1 EP3714163 B1 EP 3714163B1
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EP
European Patent Office
Prior art keywords
compressor
spring
receptacle
spring element
lubricant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP18827065.6A
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German (de)
French (fr)
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EP3714163A1 (en
Inventor
Hans Peter SCHÖGLER
Reinhard Resch
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Secop GmbH
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Secop GmbH
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Publication of EP3714163A1 publication Critical patent/EP3714163A1/en
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Publication of EP3714163B1 publication Critical patent/EP3714163B1/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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/127—Mounting of a cylinder block in a casing
    • 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
    • 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
    • F04B39/02—Lubrication
    • F04B39/0284—Constructional details, e.g. reservoirs in the casing

Definitions

  • the lubricant sump is formed in the interior of the housing, more precisely in the bottom area of the interior of the housing.
  • a crankshaft which is driven by the motor of the compressor-motor unit for the purpose of compressing refrigerant and projects into the lubricant sump in sections, lubricant is conveyed in a known manner from the lubricant sump in the direction of the compressor-motor unit including a crank pin of the crankshaft, a connecting rod that creates an operative connection between the piston and the crank pin, a bearing in which the crankshaft is mounted, and / or a cylinder wall of the To lubricate the cylinder.
  • the lubricant then flows off the compressor-motor unit and is thus fed back to the lubricant sump.
  • the receptacle according to the invention which receives the respectively assigned spring element for the purpose of connecting it to the compressor housing, in particular to the storage area of the compressor housing, makes it possible to increase the level of the lubricant in each case in the area of the spring element without the level of the To have to increase the total lubricant sump.
  • the lubricant present inside the housing during operation can thus be used to dampen the spring elements.
  • jacket element of the receptacle which jacket element at least largely prevents lubricant that has collected in the receptacle volume of the receptacle from flowing out of the receptacle into the lubricant sump.
  • An outflow of lubricant from the receptacle is "largely” prevented in this sense if the degree of tightness of the receptacle ensures that any outflow of lubricant from the receptacle, for example through porosities in the wall element, is not greater than the steady inflow of lubricant into the receptacle open in the direction of the compressor-motor unit, which inflow is caused by the lubricant that splashes around inside the housing during operation of the compressor and flows off from the compressor-motor unit.
  • So lubricant which drips or runs off from the compressor-motor unit of the compressor and collects in the receiving volume of the receptacle, initially remains inside the receptacle and is prevented by the casing element of the receptacle from leaving the receptacle volume in the direction of the lubricant sump . Since the receptacle protrudes above the sump height of the lubricant sump with its jacket element in the vertical direction, the level of the lubricant, based in each case on a common reference point, is significantly higher within the receptacle volume of the receptacle than in the lubricant sump.
  • This increased level of the viscous lubricant (and oil) in the area of the spring elements ensures that the damping effect of the lubricant described at the beginning can be optimally used, since a much larger height section of the spring elements can be lubricated than with known compressors, in which the height of the lubricant sump is limited by the factors also mentioned at the beginning, in particular by the arrangement of the compressor-motor unit. In this way, in the event of deflection, compression or expansion of the spring elements, optimal damping of the spring elements can be achieved and the noise emission caused by the vibration transmission of the spring elements can be significantly reduced.
  • any collisions between the receptacle and the compressor-motor unit more precisely between the spring holder of the receptacle and a further spring holder of the compressor-motor unit, which further spring holder is used to fasten the respective spring element to the compressor-motor unit and in sections protrudes into the spring element, dampened by a film of lubricant located between these parts.
  • Both the first spring coils and the further spring coils of the spring element are in an operating state of the compressor in the receiving volume of the receptacle, in which operating state only the weight of the compressor-motor unit acts on the at least one spring element.
  • Radial spacing of the spring coils from the casing element denotes that distance which is normal to the height direction and extends between the spring coils, which are inside the receptacle and thus surrounded by the casing element, and the casing element.
  • a minimum clear inside diameter of the casing element is greater than a maximum outside diameter of the spring element, so that all spring coils of the respective spring element arranged within the receiving volume are radially spaced from the casing element of the respective receptacle.
  • the spring element can be surrounded by lubricant in the area of its entire height section extending within the receptacle.
  • the first spring windings - and thus all spring windings arranged within the receptacle - of the respective spring element are also spaced apart from the jacket element. The movement of the spring is thus not hindered by the casing element, at least in the case of smaller amplitudes. Collisions between the spring coils and the casing element of the receptacle are largely avoided in compressors of this embodiment. In particular in connection with receptacles that are rigid, for example made of metal, a significant noise reduction can be achieved in this way.
  • At least the first three spring coils (21, 22) preferably 50% of the spring coils, particularly preferably more than 70% of the spring coils, of the spring element lie within the receiving volume (32) of the respective receptacle (15,16,17,18).
  • the lubricant level in the receiving volume is increased in such a way that even in the case of complete compression of the spring element, no spring coils of the spring element outside the receptacle - and thus outside the lubricant - collide with one another. All collisions that occur between spring coils are thus dampened by the lubricant present in the receptacle. This results in an additional reduction in noise emissions.
  • At least two of the spring coils of the respective spring element lying within the receiving volume are spaced apart from one another, so that a spring path extends between them.
  • the spring element is particularly preferably arranged at least up to and including a transition area between active and passive spring coils within the receiving volume.
  • the spring coils that are not spaced apart are interpreted as passive and the spring coils that are spaced apart from one another as active.
  • the receptacle has a pin-like spring holder protruding vertically from the receptacle, via which spring holder the spring element is connected with its inside with a force fit with the receptacle.
  • the spring holder of the receptacle which is usually designed as a fastening bolt with a diameter that tapers in the vertical direction, enables the spring element to be fastened to the receptacle - and thus to the storage area - in a particularly simple and at the same time reliable manner.
  • the spring element is designed as a helical spring
  • a particularly simple and reliable fixation of the spring element on the receptacle can be achieved by pushing the helical spring onto the spring holder, provided the diameter of the spring holder is matched to an inside diameter of the helical spring.
  • the spring holder can be made in one piece with a base element and the jacket element of the receptacle and a hollow inner section can be turned up on a raised portion of the compressor housing arranged in the base area in order to fasten the receptacle to the compressor housing.
  • the receptacle can have a recess in its base element formed in one piece with the casing element, through which recess a pin-like part of the compressor housing protruding from the base area in the vertical direction into the Admission protrudes into it.
  • the recess is matched to the protruding part of the compressor housing in such a way that leakage of lubricant from the receptacle in the area in which the protruding part and the recess contact each other is not possible or largely prevented.
  • the base element can be formed by the bearing area of the compressor housing.
  • Another embodiment of the compressor according to the invention is particularly preferred, in which embodiment the jacket element projects beyond the spring holder of the receptacle in the vertical direction.
  • the receiving volume of the receptacle for lubricant is maximized, so that the receiving volume can accommodate several spring coils.
  • the casing element of the receptacle is designed to be elastic.
  • At least the jacket element, but preferably the entire receptacle is made from an elastomer, particularly preferably from a fluoroelastomer. This material leads to an increased service life of the receptacle, which is permanently exposed to particularly high temperatures and the lubricant itself during the operating state of the compressor.
  • a clear inside diameter of the jacket element increases monotonically when viewed in the height direction, namely the clear inside diameter increases in the sense of a monotonically increasing function of the height direction.
  • this measure further increases the receiving volume of the receptacle, in which lubricant can collect and contribute to the damping of the spring element.
  • this takes into account the fact that the amplitude of the deflection of the spring element increases with the height direction. It is thus ensured that the spring element does not contact the jacket element even in the event of extreme deflections of the spring element, for example during the start / stop process of the compressor-motor unit of the compressor. This in turn is accompanied by the reduction of that proportion of the noise emission which is due to the collision between the deflected spring element and the casing element of the receptacle, made for example of metal.
  • the casing element of the receptacle surrounding the spring element and possibly the pin holder in the form of a sleeve is curved sharply outward at its end region facing away from the compressor housing.
  • the jacket element viewed in a cross-section running parallel to the vertical direction, at least in sections has the shape of a circular arc, with a to This circular arc corresponding circle has its center outside of the recording.
  • the jacket element has a first height section and a second height section, the first height section and the second height section each extending in the height direction, with a first clear inner diameter of the jacket element in the area of the first height section is constant and wherein the second height section of the jacket element has an enlarged diameter.
  • Fig. 1 shows a refrigerant compressor in a sectional view, the section running through the compressor housing 1 of the compressor.
  • a compressor-motor unit 4 is arranged, which initially comprises a motor 8 and a cylinder 5 for compressing refrigerant, the refrigerant being able to flow into the housing interior 2 via an inlet in the compressor housing 1.
  • a crankshaft 7 driven by the engine 8 is in operative connection via a connecting rod with a piston 6 arranged in the cylinder 5, so that the rotation of the crankshaft 7 leads to a periodic linear movement of the piston 6 between two dead centers of the cylinder 5.
  • the receptacle 15 is made in one piece and comprises a base element 28 contacting the storage area 34, a casing element 20 adjoining the base element 28 and a spring holder 19 protruding in a height direction 23 from the base element 28 turned up on an elevation 29 of the compressor housing 1, whereby the receptacle 15 is connected to the compressor housing 1 with a force fit.
  • the casing element 20 surrounds the spring holder 19 and a receiving volume 32 of the receptacle 15 which is formed between the spring holder 19 and the casing element 20 on the circumference or in the form of a sleeve.
  • the jacket element 20 protrudes beyond the spring holder 19 in the height direction 23 (see also Fig. 2 ).
  • Fig. 2 is a detailed view of the receptacle 15. It can be seen that a level of the lubricant 9 within the receiving volume 32 of the receptacle 15 is significantly higher than in a floor area of the compressor housing 1, where a lubricant sump 30 is formed during normal operation of the refrigerant compressor however, the maximum sump height 14 is limited by the position of the compressor-motor unit 4. This is achieved according to the invention in that the jacket element 20 of the receptacle 15 projects beyond the sump height 14 of the lubricant sump 30 in the height direction 23.
  • the spring element 10 is pushed onto the spring holder 19 of the receptacle and connected to it with a force fit.
  • the spring element 10 is connected to the compressor-motor unit 4 via a further spring holder 33 of the compressor-motor unit 4.
  • the jacket element 20 surrounds the spring holder 19 of the receptacle 15 in the shape of a sleeve and has the same clear inside diameter viewed over its entire height.
  • all spring windings of the spring element 10 which is designed as a helical spring, contact the jacket element 20, which are arranged within the receptacle 15.
  • this noise reduction effect is particularly pronounced , since this material has the flexibility required for this and also withstands the high temperatures and constant contact with lubricant 9 over the long term.
  • first spring windings 21 of the spring element 10 - here: the first and the second winding - with the jacket element 20 of the in Fig. 3 depicted receptacle 15 in contact, so that further spring windings 22 of the spring element 10, which continue from the bearing area 34 of the compressor housing 1 are removed than the first spring coils 21, are radially spaced from the casing element 20 of the receptacle 15.
  • Radial spacing within the meaning of the present invention is a normal to the height direction, i.e. the direction in which the spring element 10 and possibly the spring holder 19 protrudes from the receptacle 15, between a spring coil arranged within the receptacle volume 32 and the one at the same height to be understood with the respective spring coil arranged portion of the jacket element 20.
  • the spacing of the further spring windings 22 - here: the third, fourth and fifth windings - from the casing element 20 leads to an additional reduction in the overall noise emission of the refrigerant compressor, since noises are caused by the collision of the spring element 10 with the casing element 20 can be avoided as far as possible.
  • the jacket element 20 of the receptacles 15 from Fig. 3 has a first height section 25 arranged to run in height direction 23 and a second height section 26 also arranged to run in height direction 23.
  • a first clear inner diameter 27 of the sleeve-shaped casing element 20 is constant over the entire first height section 25.
  • the jacket element 20 has a diameter enlargement 24 running continuously from the first clear inner diameter 27 to a maximum clear inner diameter 31 reached at the upper end of the jacket element 20. This ensures that the spring element 10 cannot collide with the jacket element 20 even with high deflections.
  • Fig. 4 shows a plan view of a bottom area of the compressor housing 1.
  • the receptacles 15, 16, 17, 18 are arranged in each of a bearing area 34 of the compressor housing 1.
  • Each receptacle 15, 16, 17, 18 holds a spring element 10, 11, 12, 13 arranged.
  • the receptacles 15, 16, 17, 18, which can be designed according to the embodiment variants described above, and the spring elements 10, 11, 12, 13 arranged therein form a bearing system 3 for the compressor-motor unit 4 of the compressor.

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

Description

Die vorliegende Erfindung betrifft einen Kompressor zum Verdichten von in einem Kühlkreislauf zirkulierendem Kältemittel, umfassend

  • ein ein Gehäuseinneres des Kompressors umschließendes Kompressorgehäuse,
  • eine Verdichter-Motor-Einheit, welche zumindest einen sich in einem Zylinder bewegenden Kolben sowie einen Motor umfasst,
  • zumindest ein Federelement, vorzugsweise mehrere Federelemente, über welches Federelement die Verdichter-Motor-Einheit elastisch lagernd an einem Lagerungsbereich des Kompressorgehäuses, vorzugsweise an einem Bodenbereich des Kompressorgehäuses, angebunden ist,
  • zumindest eine an dem Lagerungsbereich angeordnete Aufnahme für das zumindest eine Federelement, vorzugsweise eine Aufnahme für jeweils ein Federelement, wobei das jeweilige Federelement in der Aufnahme aufgenommen ist, wobei
  • die Aufnahme ein Bodenelement, welches mit dem Lagerungsbereich verbunden ist und von welchem das Federelement in eine Höhenrichtung absteht, ein Mantelelement, welches Mantelelement das Federelement hülsenförmig umgibt, sowie ein durch das Bodenelement und das Mantelelement begrenztes Aufnahmevolumen aufweist, um ein Ansammeln von Schmiermittel in dem Aufnahmevolumen zu ermöglichen, sodass ein in dem Aufnahmevolumen angeordneter Abschnitt des Federelementes im Betriebszustand des Kompressors von Schmiermittel umhüllt ist.
The present invention relates to a compressor for compressing refrigerant circulating in a cooling circuit, comprising
  • a compressor housing enclosing a housing interior of the compressor,
  • a compressor-motor unit, which comprises at least one piston moving in a cylinder and a motor,
  • at least one spring element, preferably several spring elements, via which spring element the compressor-motor unit is connected in an elastic manner to a mounting area of the compressor housing, preferably to a base area of the compressor housing,
  • at least one receptacle arranged on the storage area for the at least one spring element, preferably one receptacle for each spring element, the respective spring element being received in the receptacle, with
  • the receptacle has a base element, which is connected to the storage area and from which the spring element protrudes in a vertical direction, a casing element, which casing element surrounds the spring element in a sleeve-like manner, and a receiving volume limited by the base element and the casing element, in order to prevent an accumulation of lubricant in the To enable receiving volume, so that a section of the spring element arranged in the receiving volume is enveloped by lubricant in the operating state of the compressor.

STAND DER TECHNIKSTATE OF THE ART

Bei gattungsgemäßen Kompressoren nach dem Stand der Technik ist es ein hinlänglich bekanntes Problem, dass die durch die Verdichter-Motor-Einheit hervorgerufenen Vibrationen hauptsächlich über Federelemente, mittels derer die Verdichter-Motor-Einheit an dem Gehäuseinneren des Kompressors gelagert ist, auf das Kompressorgehäuse des Kompressors übertragen werden. Je höher der Anteil der ungedämpft auf das Kompressorgehäuse übertragenen Vibrationen, desto höher ist die Lärmemission des Kompressors insgesamt. Weiterentwicklungen bekannter Kompressoren in Hinblick auf eine verminderte Lärmemission zielen beispielsweise auf eine Dämpfung der besagten Vibrationsübertragung im Bereich der Federelemente ab. Nachteilig dabei ist jedoch, dass hierbei oftmals spezielle Dämpfungselemente notwendig sind, welche naturgemäß hohen Belastungen ausgesetzt sind und somit auf Dauer verschleißen.In generic compressors according to the prior art, it is a well-known problem that the vibrations caused by the compressor-motor unit are mainly transmitted to the compressor housing via spring elements, by means of which the compressor-motor unit is mounted on the inside of the compressor housing Compressor are transferred. The higher the proportion of the vibrations transmitted to the compressor housing without dampening, the higher the overall noise emissions of the compressor. Further developments of known compressors with regard to reduced noise emissions aim, for example, at damping said vibration transmission in the area of the spring elements. The disadvantage here, however, is that special damping elements are often necessary, which are naturally exposed to high loads and therefore wear out over the long term.

In diesem Zusammenhang wurde beobachtet, dass auch Mittel zur Dämpfung der Vibrationsübertragung genützt werden können, die im Betriebszustand des Kompressors ohnehin in seinem Gehäuseinneren vorhanden sind. Insbesondere wurde festgestellt, dass Federelemente, die weitestgehend von einem während des Betriebszustandes des Kompressors im Bodenbereich des Kompressorgehäuses vorhandenen Schmiermittelsumpf bedeckt sind, nur einen sehr kleinen Teil der durch die Verdichter-Motor-Einheit hervorgerufenen Schwingungen an das Kompressorgehäuse weiterleiten. Die Viskosität des hauptsächlich aus Öl und Kältemittel gebildeten Schmiermittelsumpfes führt zu einer Dämpfung der von Schmiermittel umgebenen Federelemente. Insbesondere die Anordnung und Position des Motors der Verdichter-Motor-Einheit innerhalb des Gehäuseinneren stellen jedoch Faktoren dar, welche limitierend auf die Höhe des Schmiermittelsumpf-Spiegels wirken. Das Bestreben, die Lärmemission des Kompressors mittels eines höheren Schmiermittelsumpf-Spiegels zu reduzieren, steht somit der Anforderung entgegen, insbesondere den Rotor der Verdichter-Motor-Einheit nicht in den Schmiermittelsumpf zu tauchen.In this context, it was observed that means for damping the vibration transmission can also be used which are already present in the interior of the housing when the compressor is in operation. In particular, it was found that spring elements, which are largely covered by a lubricant sump present in the bottom area of the compressor housing during the operating state of the compressor, transmit only a very small part of the vibrations caused by the compressor-motor unit to the compressor housing. The viscosity of the lubricant sump, which is mainly formed from oil and refrigerant, leads to a damping of the spring elements surrounded by lubricant. In particular, however, the arrangement and position of the motor of the compressor-motor unit within the interior of the housing represent factors which have a limiting effect on the height of the lubricant sump level. The endeavor to reduce the noise emission of the compressor by means of a higher lubricant sump level thus contradicts the requirement, in particular not to immerse the rotor of the compressor-motor unit in the lubricant sump.

Dokument US3857652A offenbart einen Kühlmittelverdichter gemäß der Präambel des Anspruchs 1.document US3857652A discloses a refrigerant compressor according to the preamble of claim 1.

AUFGABE DER ERFINDUNGOBJECT OF THE INVENTION

Es ist daher eine Aufgabe der vorliegenden Erfindung, einen Kompressor bereit zu stellen, welcher eine verbesserte Dämpfung der Federelemente und der damit einhergehenden Vibrationsübertragung auf das Kompressorgehäuse ermöglicht.It is therefore an object of the present invention to provide a compressor which enables improved damping of the spring elements and the associated transmission of vibrations to the compressor housing.

DARSTELLUNG DER ERFINDUNGDISCLOSURE OF THE INVENTION

Diese Aufgabe wird bei einem erfindungsgemäßen Kompressor zum Verdichten von in einem Kühlkreislauf zirkulierendem Kältemittel, umfassend

  • ein ein Gehäuseinneres des Kompressors umschließendes Kompressorgehäuse,
  • eine Verdichter-Motor-Einheit, welche zumindest einen sich in einem Zylinder bewegenden Kolben sowie einen Motor umfasst,
  • zumindest ein Federelement, vorzugsweise mehrere Federelemente, über welches Federelement die Verdichter-Motor-Einheit elastisch lagernd an einem Lagerungsbereich des Kompressorgehäuses, vorzugsweise an einem Bodenbereich des Kompressorgehäuses, angebunden ist, sowie
  • zumindest eine an dem Lagerungsbereich angeordnete Aufnahme für das zumindest eine Federelement, vorzugsweise eine Aufnahme für jeweils ein Federelement, wobei das jeweilige Federelement in der Aufnahme aufgenommen ist, wobei die Aufnahme ein Bodenelement, welches mit dem Lagerungsbereich verbunden ist und von welchem das Federelement in Höhenrichtung absteht, ein Mantelelement, welches Mantelelement das Federelement hülsenförmig umgibt, sowie ein durch das Bodenelement und das Mantelelement begrenztes Aufnahmevolumen aufweist, um im Betrieb des Kompressors ein Ansammeln von Schmiermittel in dem Aufnahmevolumen zu ermöglichen, sodass ein in dem Aufnahmevolumen angeordneter Abschnitt des Federelementes von Schmiermittel umhüllt ist,
gelöst, indem das Mantelelement eine Sumpfhöhe eines Schmiermittelsumpfes, welcher Schmiermittelsumpf sich im Betrieb des Kompressors im Gehäuseinneren ausbildet, in Höhenrichtung überragt.This object is encompassed in a compressor according to the invention for compressing refrigerant circulating in a cooling circuit
  • a compressor housing enclosing a housing interior of the compressor,
  • a compressor-motor unit, which comprises at least one piston moving in a cylinder and a motor,
  • at least one spring element, preferably several spring elements, via which spring element the compressor-motor unit is connected in an elastic manner to a mounting area of the compressor housing, preferably to a base area of the compressor housing, and
  • at least one receptacle arranged on the storage area for the at least one spring element, preferably a receptacle for one spring element each, the respective spring element being received in the receptacle, the receptacle being a base element which is connected to the storage area and from which the spring element in the height direction protrudes, a jacket element, which jacket element surrounds the spring element in the form of a sleeve, and has a receiving volume limited by the bottom element and the jacket element in order to allow lubricant to accumulate in the receiving volume during operation of the compressor, so that a section of the spring element of lubricant arranged in the receiving volume is enveloped
solved in that the jacket element protrudes in the vertical direction over a sump height of a lubricant sump, which lubricant sump is formed in the interior of the housing during operation of the compressor.

Während des Betriebs des Kompressors, in welchem der Kompressor bestimmungsgemäß zur Verdichtung von Kältemittel betrieben wird, bildet sich der Schmiermittelsumpf im Gehäuseinneren, genauer gesagt im Bodenbereich des Gehäuseinneren, aus. Meist mittels einer Kurbelwelle, die von dem Motor der Verdichter-Motor-Einheit zwecks Verdichtung von Kältemittel angetrieben wird und abschnittsweise in den Schmiermittelsumpf hinein ragt, wird Schmiermittel auf an sich bekannte Weise aus dem Schmiermittelsumpf in Richtung der Verdichter-Motor-Einheit gefördert, um unter anderem etwa einen Kurbelzapfen der Kurbelwelle, ein Pleuel, welches eine Wirkverbindung zwischen Kolben und Kurbelzapfen herstellt, ein Lager, in welchem die Kurbelwelle gelagert ist, und/oder eine Zylinderwand des Zylinders zu schmieren. In weiterer Folge fließt das Schmiermittel von der Verdichter-Motor-Einheit ab und wird so wiederum dem Schmiermittelsumpf zugeführt.During the operation of the compressor, in which the compressor is operated as intended to compress refrigerant, the lubricant sump is formed in the interior of the housing, more precisely in the bottom area of the interior of the housing. Usually by means of a crankshaft, which is driven by the motor of the compressor-motor unit for the purpose of compressing refrigerant and projects into the lubricant sump in sections, lubricant is conveyed in a known manner from the lubricant sump in the direction of the compressor-motor unit including a crank pin of the crankshaft, a connecting rod that creates an operative connection between the piston and the crank pin, a bearing in which the crankshaft is mounted, and / or a cylinder wall of the To lubricate the cylinder. The lubricant then flows off the compressor-motor unit and is thus fed back to the lubricant sump.

Durch die erfindungsgemäße Aufnahme, welche das jeweils zugeordnete Federelement zwecks Anbindung desselben an das Kompressorgehäuse, insbesondere an den Lagerungsbereich des Kompressorgehäuses, abschnittsweise in sich aufnimmt, wird es ermöglicht, den Spiegel des Schmiermittels jeweils im Bereich des Federelementes zu erhöhen, ohne dafür den Spiegel des Schmiermittelsumpfes insgesamt erhöhen zu müssen. Das während des Betriebs im Gehäuseinneren vorhandene Schmiermittel kann somit zur Dämpfung der Federelemente verwendet werden.The receptacle according to the invention, which receives the respectively assigned spring element for the purpose of connecting it to the compressor housing, in particular to the storage area of the compressor housing, makes it possible to increase the level of the lubricant in each case in the area of the spring element without the level of the To have to increase the total lubricant sump. The lubricant present inside the housing during operation can thus be used to dampen the spring elements.

Dies geschieht insbesondere durch das Mantelelement der Aufnahme, welches Mantelelement ein Abfließen von Schmiermittel, das sich in dem Aufnahmevolumen der Aufnahme gesammelt hat, aus der Aufnahme in den Schmiermittelsumpf zumindest weitestgehend unterbindet. Ein Abfließen von Schmiermittel aus der Aufnahme ist in diesem Sinne "weitestgehend" unterbunden, wenn der Dichtheitsgrad der Aufnahme sicherstellt, dass ein etwaiger Abfluss von Schmiermittel aus der Aufnahme, beispielsweise durch Porositäten im Wandelement, nicht größer ist als der stetige Zufluss von Schmiermittel in die in Richtung der Verdichter-Motor-Einheit offene Aufnahme, welcher Zufluss durch das im Betrieb des Kompressors im Gehäuseinneren herumspritzende und von der Verdichter-Motor-Einheit abfließende Schmiermittel bedingt wird. So verbleibt Schmiermittel, welches von der Verdichter-Motor-Einheit des Kompressors abtropft bzw. abläuft und sich in dem Aufnahmevolumen der Aufnahme sammelt, zunächst im Inneren der Aufnahme und wird durch das Mantelelement der Aufnahme daran gehindert, das Aufnahmevolumen in Richtung des Schmiermittelsumpfes zu verlassen. Da die Aufnahme die Sumpfhöhe des Schmiermittelsumpfes mit ihrem Mantelelement in Höhenrichtung überragt, ist der Spiegel des Schmiermittels, jeweils bezogen auf einen gemeinsamen Bezugspunkt, innerhalb des Aufnahmevolumens der Aufnahme ein deutlich höherer als im Schmiermittelsumpf.This is done in particular by the jacket element of the receptacle, which jacket element at least largely prevents lubricant that has collected in the receptacle volume of the receptacle from flowing out of the receptacle into the lubricant sump. An outflow of lubricant from the receptacle is "largely" prevented in this sense if the degree of tightness of the receptacle ensures that any outflow of lubricant from the receptacle, for example through porosities in the wall element, is not greater than the steady inflow of lubricant into the receptacle open in the direction of the compressor-motor unit, which inflow is caused by the lubricant that splashes around inside the housing during operation of the compressor and flows off from the compressor-motor unit. So lubricant, which drips or runs off from the compressor-motor unit of the compressor and collects in the receiving volume of the receptacle, initially remains inside the receptacle and is prevented by the casing element of the receptacle from leaving the receptacle volume in the direction of the lubricant sump . Since the receptacle protrudes above the sump height of the lubricant sump with its jacket element in the vertical direction, the level of the lubricant, based in each case on a common reference point, is significantly higher within the receptacle volume of the receptacle than in the lubricant sump.

Dieser im Bereich der Federelemente erhöhte Spiegel des viskosen Schmiermittels (und Öls) sorgt dafür, dass der eingangs beschriebene dämpfende Effekt des Schmiermittels optimal genutzt werden kann, da ein wesentlich größerer Höhenabschnitt der Federelemente unter Schmiermittel gesetzt werden kann, als bei bekannten Kompressoren, bei welchen die Höhe des Schmiermittelsumpfes durch die ebenfalls eingangs genannten Faktoren, insbesondere durch die Anordnung der Verdichter-Motor-Einheit, limitiert ist. Dadurch kann im Falle von Auslenkung, Komprimierung oder Ausdehnung der Federelemente eine optimale Dämpfung der Federelemente erzielt und die durch die Vibrationsübertragung der Federelemente hervorgerufene Lärmemission deutlich reduziert werden. Zudem werden etwaige Kollisionen zwischen der Aufnahme und der Verdichter-Motor-Einheit, genauer zwischen dem Federhalter der Aufnahme und einem weiteren Federhalter der Verdichter-Motor-Einheit, welcher weitere Federhalter der Befestigung des jeweiligen Federelementes an der Verdichter-Motor-Einheit dient und abschnittsweise in das Federelement hineinragt, durch einen zwischen diesen Teilen liegenden Schmiermittelfilm gedämpft.This increased level of the viscous lubricant (and oil) in the area of the spring elements ensures that the damping effect of the lubricant described at the beginning can be optimally used, since a much larger height section of the spring elements can be lubricated than with known compressors, in which the height of the lubricant sump is limited by the factors also mentioned at the beginning, in particular by the arrangement of the compressor-motor unit. In this way, in the event of deflection, compression or expansion of the spring elements, optimal damping of the spring elements can be achieved and the noise emission caused by the vibration transmission of the spring elements can be significantly reduced. In addition, any collisions between the receptacle and the compressor-motor unit, more precisely between the spring holder of the receptacle and a further spring holder of the compressor-motor unit, which further spring holder is used to fasten the respective spring element to the compressor-motor unit and in sections protrudes into the spring element, dampened by a film of lubricant located between these parts.

Durch eine radiale Beabstandung aller weiteren Federwindungen von dem Mantelelement der Aufnahme außer in Höhenrichtung betrachtet erster Federwindungen des jeweiligen Federelementes, welche ersten Federwindungen durch die dem Lagerungsbereich nächstgelegene eine, zwei oder drei Federwindungen des Federelementes ausgebildet sein können, ist sichergestellt, dass das jeweilige Federelement zumindest im Bereich seiner weiteren Federwindungen an seiner Außenseite ringsum von Schmiermittel umgeben ist. Dadurch wird der oben beschriebene Dämpfungseffekt weiter verstärkt. Dabei befinden sich sowohl die ersten Federwindungen als auch die weiteren Federwindungen des Federelementes in einem Betriebszustand des Kompressors in dem Aufnahmevolumen der Aufnahme, wobei in diesem Betriebszustand lediglich die Gewichtskraft der Verdichter-Motor-Einheit auf das zumindest eine Federelement wirkt. Unter radialer Beabstandung der Federwindungen von dem Mantelelement wird dabei jener normal auf die Höhenrichtung stehender Abstand bezeichnet, welcher sich zwischen den Federwindungen, die innerhalb der Aufnahme und somit von dem Mantelelement umgeben sind, und dem Mantelelement erstreckt.A radial spacing of all further spring windings from the casing element of the receptacle, apart from the first spring windings of the respective spring element when viewed in the vertical direction, which first spring windings can be formed by the one, two or three spring windings of the spring element closest to the storage area, ensures that the respective spring element at least is surrounded all around by lubricant in the area of its further spring coils on its outside. This further increases the damping effect described above. Both the first spring coils and the further spring coils of the spring element are in an operating state of the compressor in the receiving volume of the receptacle, in which operating state only the weight of the compressor-motor unit acts on the at least one spring element. Radial spacing of the spring coils from the casing element denotes that distance which is normal to the height direction and extends between the spring coils, which are inside the receptacle and thus surrounded by the casing element, and the casing element.

Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Kompressors ist es vorgesehen, dass ein minimaler lichter Innendurchmesser des Mantelelementes größer ist als ein maximaler Außendurchmesser des Federelementes, sodass alle innerhalb des Aufnahmevolumens angeordneten Federwindungen des jeweiligen Federelementes von dem Mantelelement der jeweiligen Aufnahme radial beabstandet sind.In a preferred embodiment of the compressor according to the invention, it is provided that a minimum clear inside diameter of the casing element is greater than a maximum outside diameter of the spring element, so that all spring coils of the respective spring element arranged within the receiving volume are radially spaced from the casing element of the respective receptacle.

In diesem Fall kann das Federelement im Bereich seines gesamten, sich innerhalb der Aufnahme erstreckenden Höhenabschnittes von Schmiermittel umgeben sein. Insbesondere ist es bei dieser Ausführungsform des erfindungsgemäßen Kompressors vorgesehen, dass auch die ersten Federwindungen - und somit sämtliche innerhalb der Aufnahme angeordnete Federwindungen - des jeweiligen Federelementes von dem Mantelelement beabstandet sind. Die Bewegung der Feder wird somit, zumindest im Falle kleinerer Amplituden, nicht durch das Mantelelement behindert. Kollisionen zwischen den Federwindungen und dem Mantelelement der Aufnahme werden bei Kompressoren dieser Ausführungsform weitestgehend vermieden. Insbesondere im Zusammenhang mit Aufnahmen, die starr, beispielsweise aus Metall, ausgebildet sind, kann dadurch eine deutliche Lärmreduktion erreicht werden.In this case, the spring element can be surrounded by lubricant in the area of its entire height section extending within the receptacle. In particular, it is provided in this embodiment of the compressor according to the invention that the first spring windings - and thus all spring windings arranged within the receptacle - of the respective spring element are also spaced apart from the jacket element. The movement of the spring is thus not hindered by the casing element, at least in the case of smaller amplitudes. Collisions between the spring coils and the casing element of the receptacle are largely avoided in compressors of this embodiment. In particular in connection with receptacles that are rigid, for example made of metal, a significant noise reduction can be achieved in this way.

Bei einer anderen bevorzugten Ausführungsform des erfindungsgemäßen Kompressors ist es vorgesehen, dass in dem besagten Betriebszustand des Kompressors, in welchem Betriebszustand das zumindest eine Federelement lediglich durch das Gewicht der Verdichter-Motor-Einheit belastet ist, zumindest die ersten drei Federwindungen (21,22), vorzugsweise 50% der Federwindungen, besonders bevorzugt mehr als 70% der Federwindungen, des Federelementes innerhalb des Aufnahmevolumens (32) der jeweiligen Aufnahme (15,16,17,18) liegen.In another preferred embodiment of the compressor according to the invention, it is provided that in the said operating state of the compressor, in which operating state the at least one spring element is only loaded by the weight of the compressor-motor unit, at least the first three spring coils (21, 22) , preferably 50% of the spring coils, particularly preferably more than 70% of the spring coils, of the spring element lie within the receiving volume (32) of the respective receptacle (15,16,17,18).

Dadurch wird sichergestellt, dass das sich in dem Aufnahmevolumen ansammelnde Schmiermittel einen in Relation zu der Höhe des Federelementes für Dämpfungszwecke besonders günstigen Spiegel erreichen kann. Bei der bevorzugten Ausführungsform des Kompressors wird der Schmiermittel-Spiegel im Aufnahmevolumen derart erhöht, dass selbst im Falle vollständiger Komprimierung des Federelementes keine Federwindungen des Federelementes außerhalb der Aufnahme - und somit außerhalb des Schmiermittels - miteinander kollidieren. Sämtliche stattfindenden Kollisionen zwischen Federwindungen werden somit durch das in der Aufnahme vorhandene Schmiermittel gedämpft. Dadurch wird eine zusätzliche Reduktion der Lärmemission erreicht.This ensures that the lubricant that collects in the receiving volume can reach a mirror which is particularly favorable in relation to the height of the spring element for damping purposes. In the preferred embodiment of the compressor, the lubricant level in the receiving volume is increased in such a way that even in the case of complete compression of the spring element, no spring coils of the spring element outside the receptacle - and thus outside the lubricant - collide with one another. All collisions that occur between spring coils are thus dampened by the lubricant present in the receptacle. This results in an additional reduction in noise emissions.

Bei einer bevorzugten Ausführungsform der Erfindung ist es vorgesehen, dass zumindest zwei der innerhalb des Aufnahmevolumens liegenden Federwindungen des jeweiligen Federelementes voneinander beabstandet sind, sodass sich zwischen ihnen ein Federweg erstreckt.In a preferred embodiment of the invention it is provided that at least two of the spring coils of the respective spring element lying within the receiving volume are spaced apart from one another, so that a spring path extends between them.

Dadurch kann der durch das Schmiermittel erzielte Dämpfungseffekt noch effizienter genutzt werden.As a result, the damping effect achieved by the lubricant can be used even more efficiently.

Besonders bevorzugt ist das Federelement im besagten Betriebszustand des Kompressors mindestens bis zu einem und einschließlich eines Übergangsbereiches zwischen aktiven und passiven Federwindungen innerhalb des Aufnahmevolumens angeordnet. Dabei werden die nicht beabstandeten Federwindungen als passiv und die voneinander beabstandeten Federwindungen als aktiv aufgefasst.In the said operating state of the compressor, the spring element is particularly preferably arranged at least up to and including a transition area between active and passive spring coils within the receiving volume. The spring coils that are not spaced apart are interpreted as passive and the spring coils that are spaced apart from one another as active.

Da der durch das im Betriebszustand des Kompressors im Aufnahmevolumen befindliche Schmiermittel hervorgerufene Dämpfungseffekt in diesem Übergangsbereich am stärksten ausfällt, wird bei solchen Ausführungsformen des erfindungsgemäßen Kompressors eine verstärkte Dämpfung erreicht.Since the damping effect caused by the lubricant in the receiving volume in the operating state of the compressor is greatest in this transition area, increased damping is achieved in such embodiments of the compressor according to the invention.

Bei einer anderen bevorzugten Ausführungsform des erfindungsgemäßen Kompressors ist es vorgesehen, dass die Aufnahme einen in Höhenrichtung von der Aufnahme abstehenden stiftartigen Federhalter aufweist, über welchen Federhalter das Federelement mit seiner Innenseite unter Kraftschluss mit der Aufnahme verbunden ist.In another preferred embodiment of the compressor according to the invention, it is provided that the receptacle has a pin-like spring holder protruding vertically from the receptacle, via which spring holder the spring element is connected with its inside with a force fit with the receptacle.

Durch den Federhalter der Aufnahme, welcher üblicherweise als Befestigungsbolzen mit sich in Höhenrichtung verjüngendem Durchmesser ausgeführt ist, wird ein besonders einfaches und zugleich zuverlässiges Befestigen des Federelementes an der Aufnahme - und somit an dem Lagerungsbereich - ermöglicht. Insbesondere wenn das Federelement als Schraubenfeder ausgebildet ist, kann eine besonders einfache und zuverlässige Fixierung des Federelementes an der Aufnahme durch Aufschieben der Schraubenfeder auf den Federhalter erreicht werden, sofern der Durchmesser des Federhalters auf einen Innendurchmesser der Schraubenfeder abgestimmt ist. Dabei kann der Federhalter einstückig mit einem Bodenelement und dem Mantelelement der Aufnahme ausgeführt sein und mit einem hohlen Innenabschnitt auf eine im Bodenbereich angeordnete Erhebung des Kompressorgehäuses aufgestülpt sein, um die Aufnahme an dem Kompressorgehäuse zu befestigen. Alternativ kann die Aufnahme in ihrem einstückig mit dem Mantelelement ausgebildeten Bodenelement eine Ausnehmung aufweisen, durch welche Ausnehmung ein stiftartiger, von dem Bodenbereich in Höhenrichtung abstehender Teil des Kompressorgehäuses hindurch in die Aufnahme hinein ragt. Die Ausnehmung ist in einem solchen Fall derart auf den abstehenden Teil des Kompressorgehäuses abgestimmt, dass ein Auslaufen von Schmiermittel aus der Aufnahme in jenem Bereich, in dem der abstehende Teil und die Ausnehmung einander kontaktieren, nicht möglich bzw. weitestgehend unterbunden ist.The spring holder of the receptacle, which is usually designed as a fastening bolt with a diameter that tapers in the vertical direction, enables the spring element to be fastened to the receptacle - and thus to the storage area - in a particularly simple and at the same time reliable manner. Particularly when the spring element is designed as a helical spring, a particularly simple and reliable fixation of the spring element on the receptacle can be achieved by pushing the helical spring onto the spring holder, provided the diameter of the spring holder is matched to an inside diameter of the helical spring. The spring holder can be made in one piece with a base element and the jacket element of the receptacle and a hollow inner section can be turned up on a raised portion of the compressor housing arranged in the base area in order to fasten the receptacle to the compressor housing. Alternatively, the receptacle can have a recess in its base element formed in one piece with the casing element, through which recess a pin-like part of the compressor housing protruding from the base area in the vertical direction into the Admission protrudes into it. In such a case, the recess is matched to the protruding part of the compressor housing in such a way that leakage of lubricant from the receptacle in the area in which the protruding part and the recess contact each other is not possible or largely prevented.

In einer anderen Ausführungsform der Erfindung kann das Bodenelement durch den Lagerungsbereich des Kompressorgehäuses ausgebildet sein.In another embodiment of the invention, the base element can be formed by the bearing area of the compressor housing.

Besonders bevorzugt ist eine weitere Ausführungsform des erfindungsgemäßen Kompressors, bei welcher Ausführungsform das Mantelelement den Federhalter der Aufnahme in Höhenrichtung überragt.Another embodiment of the compressor according to the invention is particularly preferred, in which embodiment the jacket element projects beyond the spring holder of the receptacle in the vertical direction.

Dadurch wird eine Maximierung des Aufnahmevolumens der Aufnahme für Schmiermittel erreicht, sodass das Aufnahmevolumen mehrere Federwindungen aufnehmen kann.As a result, the receiving volume of the receptacle for lubricant is maximized, so that the receiving volume can accommodate several spring coils.

Um denjenigen Anteil der Lärmemission, welcher der Kollision zwischen dem ausgelenkten Federelement und dem Mantelelement der Aufnahme zuzurechnen ist, zu reduzieren, ist es bei einer weiteren bevorzugten Ausführungsform der Erfindung vorgesehen, dass das Mantelelement der Aufnahme elastisch ausgebildet ist.In order to reduce that portion of the noise emission that is attributable to the collision between the deflected spring element and the casing element of the receptacle, it is provided in a further preferred embodiment of the invention that the casing element of the receptacle is designed to be elastic.

Besonders vorteilhaft ist es in diesem Zusammenhang, wenn, wie bei einer weiteren bevorzugten Ausführungsform des erfindungsgemäßen Kompressors vorgesehen, zumindest das Mantelelement, vorzugsweise jedoch die gesamte Aufnahme, aus einem Elastomer, besonders bevorzugt aus einem Fluorelastomer, gefertigt ist. Dieses Material führt zu einer erhöhten Lebensdauer der Aufnahme, die während des Betriebszustandes des Kompressors dauerhaft besonders hohen Temperaturen und dem Schmiermittel selbst ausgesetzt ist.It is particularly advantageous in this context if, as provided in a further preferred embodiment of the compressor according to the invention, at least the jacket element, but preferably the entire receptacle, is made from an elastomer, particularly preferably from a fluoroelastomer. This material leads to an increased service life of the receptacle, which is permanently exposed to particularly high temperatures and the lubricant itself during the operating state of the compressor.

Bei einer besonders bevorzugten Ausführungsform des erfindungsgemäßen Kompressors ist es vorgesehen, dass ein lichter Innendurchmesser des Mantelelementes in Höhenrichtung betrachtet monoton anwächst, nämlich der lichte Innendurchmesser im Sinne einer monoton steigenden Funktion der Höhenrichtung anwächst.In a particularly preferred embodiment of the compressor according to the invention, it is provided that a clear inside diameter of the jacket element increases monotonically when viewed in the height direction, namely the clear inside diameter increases in the sense of a monotonically increasing function of the height direction.

Einerseits wird durch diese Maßnahme das Aufnahmevolumen der Aufnahme, in welchem sich Schmiermittel sammeln und zur Dämpfung des Federelementes beitragen kann, weiter erhöht. Andererseits wird dadurch der Tatsache Rechnung getragen, dass die Amplitude der Auslenkung des Federelementes mit der Höhenrichtung zunimmt. Es wird somit sichergestellt, dass das Federelement selbst bei extremen Auslenkungen des Federelementes, beispielsweise während des Start-/Stop-Vorganges der Verdichter-Motor-Einheit des Kompressors, das Mantelelement nicht kontaktiert. Damit einher geht wiederum die Reduktion desjenigen Anteils der Lärmemission, welcher der Kollision zwischen dem ausgelenkten Federelement und dem, beispielsweise aus Metall gefertigten, Mantelelement der Aufnahme geschuldet ist.On the one hand, this measure further increases the receiving volume of the receptacle, in which lubricant can collect and contribute to the damping of the spring element. On the other hand, this takes into account the fact that the amplitude of the deflection of the spring element increases with the height direction. It is thus ensured that the spring element does not contact the jacket element even in the event of extreme deflections of the spring element, for example during the start / stop process of the compressor-motor unit of the compressor. This in turn is accompanied by the reduction of that proportion of the noise emission which is due to the collision between the deflected spring element and the casing element of the receptacle, made for example of metal.

Insbesondere vorteilhaft kann es sein, wenn das das Federelement und gegebenenfalls den Stifthalter hülsenförmig umgebende Mantelelement der Aufnahme an seinem von dem Kompressorgehäuse abgewandten Endbereich stark nach außen hin gekrümmt ist. Um die mit einem derart ausgebildeten Mantelelement einhergehende Volumenvergrößerung der Aufnahme zu erreichen, ist es bei einer anderen bevorzugten Ausführungsform des erfindungsgemäßen Kompressors vorgesehen, dass das Mantelelement, in einem parallel zur Höhenrichtung verlaufenden Querschnitt betrachtet, zumindest abschnittsweise die Form eines Kreisbogens aufweist, wobei ein zu diesem Kreisbogen korrespondierender Kreis seinen Mittelpunkt außerhalb der Aufnahme hat.It can be particularly advantageous if the casing element of the receptacle surrounding the spring element and possibly the pin holder in the form of a sleeve is curved sharply outward at its end region facing away from the compressor housing. In order to achieve the increase in volume of the receptacle associated with a jacket element designed in this way, it is provided in another preferred embodiment of the compressor according to the invention that the jacket element, viewed in a cross-section running parallel to the vertical direction, at least in sections has the shape of a circular arc, with a to This circular arc corresponding circle has its center outside of the recording.

Bei einer besonders bevorzugten Ausführungsform des erfindungsgemäßen Kompressors ist es vorgesehen, dass das Mantelelement einen ersten Höhenabschnitt und einen zweiten Höhenabschnitt aufweist, wobei sich der erste Höhenabschnitt und der zweite Höhenabschnitt jeweils in Höhenrichtung erstrecken, wobei ein erster lichter Innendurchmesser des Mantelelementes im Bereich des ersten Höhenabschnittes konstant ist und wobei der zweite Höhenabschnitt des Mantelelementes eine Durchmessererweiterung aufweist.In a particularly preferred embodiment of the compressor according to the invention, it is provided that the jacket element has a first height section and a second height section, the first height section and the second height section each extending in the height direction, with a first clear inner diameter of the jacket element in the area of the first height section is constant and wherein the second height section of the jacket element has an enlarged diameter.

KURZE BESCHREIBUNG DER FIGURENBRIEF DESCRIPTION OF THE FIGURES

Die Erfindung wird nun anhand von Ausführungsbeispielen 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 on the basis of exemplary embodiments. The drawings are exemplary and are intended to explain the concept of the invention, but in no way restrict it or reproduce it conclusively.

Dabei zeigt:

Fig. 1
eine Schnittansicht eines erfindungsgemäßen Kompressors
Fig. 2
eine Detailansicht aus Fig. 1
Fig. 3
eine Ausführungsvariante einer erfindungsgemäßen Aufnahme samt Federelement
Fig. 4
eine Aufsicht auf den Gehäuseboden des Kompressors aus Fig. 1 mit vier Aufnahmen und zugeordneten Federelementen
It shows:
Fig. 1
a sectional view of a compressor according to the invention
Fig. 2
a detailed view Fig. 1
Fig. 3
an embodiment variant of a receptacle according to the invention including a spring element
Fig. 4
a plan view of the housing bottom of the compressor Fig. 1 with four recordings and associated spring elements

WEGE ZUR AUSFÜHRUNG DER ERFINDUNGWAYS OF CARRYING OUT THE INVENTION

Fig. 1 zeigt einen Kältemittelkompressor in einer Schnittansicht, wobei der Schnitt durch das Kompressorgehäuse 1 des Kompressors verläuft. In einem von dem Kompressorgehäuse 1 umgebenen Gehäuseinneren 2 ist eine Verdichter-Motor-Einheit 4 angeordnet, welche zunächst einen Motor 8 sowie einen Zylinder 5 zur Verdichtung von Kältemittel umfasst, wobei das Kältemittel über einen Einlass im Kompressorgehäuse 1 in das Gehäuseinnere 2 einströmen kann. Fig. 1 shows a refrigerant compressor in a sectional view, the section running through the compressor housing 1 of the compressor. In a housing interior 2 surrounded by the compressor housing 1, a compressor-motor unit 4 is arranged, which initially comprises a motor 8 and a cylinder 5 for compressing refrigerant, the refrigerant being able to flow into the housing interior 2 via an inlet in the compressor housing 1.

Eine von dem Motor 8 angetriebene Kurbelwelle 7 steht über ein Pleuel mit einem in dem Zylinder 5 angeordneten Kolben 6 in Wirkverbindung, sodass die Rotation der Kurbelwelle 7 zu einer periodischen Linearbewegung des Kolbens 6 zwischen zwei Totpunkten des Zylinders 5 führt.A crankshaft 7 driven by the engine 8 is in operative connection via a connecting rod with a piston 6 arranged in the cylinder 5, so that the rotation of the crankshaft 7 leads to a periodic linear movement of the piston 6 between two dead centers of the cylinder 5.

An einem als Lagerungsbereich 34 der Verdichter-Motor-Einheit 4 dienenden Bodenbereich des Kompressorgehäuses 1 sind vier Aufnahmen 15, 16, 17, 18 vorgesehen (siehe Fig. 4), von denen in Fig. 1 jedoch nur die Aufnahmen 15 und 16 zu sehen sind. Die Aufnahme 15 ist dabei einstückig gefertigt und umfasst ein den Lagerungsbereich 34 kontaktierendes Bodenelement 28, ein an das Bodenelement 28 anschließendes Mantelelement 20 sowie einen in eine Höhenrichtung 23 von dem Bodenelement 28 abstehenden Federhalter 19. Dabei ist die Aufnahme 15 mit einem Hohlraum des Federhalters 19 auf eine Erhebung 29 des Kompressorgehäuses 1 aufgestülpt, wodurch die Aufnahme 15 unter Kraftschluss mit dem Kompressorgehäuse 1 verbunden ist. Das Mantelelement 20 umschließt den Federhalter 19 und ein sich zwischen dem Federhalter 19 und dem Mantelelement 20 ausbildendes Aufnahmevolumen 32 der Aufnahme 15 umfangseitig bzw. hülsenförmig. Das Mantelelement 20 überragt den Federhalter 19 in Höhenrichtung 23 (siehe auch Fig. 2).Four receptacles 15, 16, 17, 18 are provided on a floor area of the compressor housing 1 serving as a storage area 34 of the compressor-motor unit 4 (see FIG Fig. 4 ), of which in Fig. 1 however, only recordings 15 and 16 can be seen. The receptacle 15 is made in one piece and comprises a base element 28 contacting the storage area 34, a casing element 20 adjoining the base element 28 and a spring holder 19 protruding in a height direction 23 from the base element 28 turned up on an elevation 29 of the compressor housing 1, whereby the receptacle 15 is connected to the compressor housing 1 with a force fit. The casing element 20 surrounds the spring holder 19 and a receiving volume 32 of the receptacle 15 which is formed between the spring holder 19 and the casing element 20 on the circumference or in the form of a sleeve. The jacket element 20 protrudes beyond the spring holder 19 in the height direction 23 (see also Fig. 2 ).

Fig. 2 ist eine Detailansicht der Aufnahme 15. Dabei ist zu sehen, dass ein Spiegel des Schmiermittels 9 innerhalb des Aufnahmevolumens 32 der Aufnahme 15 deutlich höher ist als in einem Bodenbereich des Kompressorgehäuses 1, wo sich während des bestimmungsgemäßen Betriebs des Kältemittelkompressors ein Schmiermittelsumpf 30 ausbildet, dessen maximale Sumpfhöhe 14 jedoch durch die Position Verdichter-Motor-Einheit 4 begrenzt wird. Dies wird erfindungsgemäß dadurch erreicht, dass das Mantelelement 20 der Aufnahme 15 die Sumpfhöhe 14 des Schmiermittelsumpfes 30 in Höhenrichtung 23 überragt. Die fünf innerhalb des Aufnahmevolumens 32 angeordneten Federwindungen des als Schraubenfeder ausgebildeten Federelementes 10, welches zwecks Befestigung auf den Federhalter 19 der Aufnahme 15 aufgeschoben und dort unter Kraftschluss fixiert ist, sind somit von Schmiermittel 9 umgeben, wodurch eine Dämpfung der von der Verdichter-Motor-Einheit 4 hervorgerufenen und über das Federelement 10 auf das Kompressorgehäuse 1 übertragenen Vibrationen erreicht wird. Zwecks Befestigung des Federelementes 10 mit der Aufnahme 15 ist das Federelement 10 auf den Federhalter 19 der Aufnahme aufgeschoben und mit diesem unter Kraftschluss verbunden. Analog dazu ist das Federelement 10 über einen weiteren Federhalter 33 der Verdichter-Motor-Einheit 4 mit der Verdichter-Motor-Einheit 4 verbunden. Fig. 2 is a detailed view of the receptacle 15. It can be seen that a level of the lubricant 9 within the receiving volume 32 of the receptacle 15 is significantly higher than in a floor area of the compressor housing 1, where a lubricant sump 30 is formed during normal operation of the refrigerant compressor however, the maximum sump height 14 is limited by the position of the compressor-motor unit 4. This is achieved according to the invention in that the jacket element 20 of the receptacle 15 projects beyond the sump height 14 of the lubricant sump 30 in the height direction 23. The five spring coils of the spring element 10, which is designed as a helical spring and which is slid onto the spring holder 19 of the receptacle 15 for the purpose of fastening and is fixed there with frictional connection, are thus surrounded by lubricant 9, whereby a damping of the Unit 4 caused and transmitted via the spring element 10 to the compressor housing 1 vibrations is achieved. For the purpose of fastening the spring element 10 to the receptacle 15, the spring element 10 is pushed onto the spring holder 19 of the receptacle and connected to it with a force fit. Analogously to this, the spring element 10 is connected to the compressor-motor unit 4 via a further spring holder 33 of the compressor-motor unit 4.

In Fig. 2 umgibt das Mantelelement 20 den Federhalter 19 der Aufnahme 15 hülsenförmig und hat über seine gesamte Höhe betrachtet denselben lichten Innendurchmesser. In dieser Ausführungsvariante kontaktieren alle innerhalb der Aufnahme 15 angeordneten Federwindungen des als Schraubenfeder ausgebildeten Federelementes 10 das Mantelelement 20. Bei Ausführungsvarianten des Kältemittelkompressors, bei denen die Aufnahmen aus einem Elastomer, vorzugsweise aus einem Fluorelastomer, gefertigt sind, ist dieser Effekt der Lärmreduktion besonders stark ausgeprägt, da dieses Material die dafür notwendige Flexibilität aufweist und außerdem den hohen Temperaturen sowie dem ständigen Kontakt mit Schmiermittel 9 dauerhaft standhält.In Fig. 2 the jacket element 20 surrounds the spring holder 19 of the receptacle 15 in the shape of a sleeve and has the same clear inside diameter viewed over its entire height. In this embodiment variant, all spring windings of the spring element 10, which is designed as a helical spring, contact the jacket element 20, which are arranged within the receptacle 15. In variant embodiments of the refrigerant compressor in which the receptacles are made of an elastomer, preferably a fluoroelastomer, this noise reduction effect is particularly pronounced , since this material has the flexibility required for this and also withstands the high temperatures and constant contact with lubricant 9 over the long term.

Im Gegensatz zu der in Fig. 2 gezeigten Aufnahme 15 stehen in Fig. 3 nur erste Federwindungen 21 des Federelementes 10 - hier: die erste und die zweite Windung - mit dem Mantelelement 20 der in Fig. 3 abgebildeten Aufnahme 15 in Kontakt, sodass weitere Federwindungen 22 des Federelementes 10, welche von dem Lagerungsbereich 34 des Kompressorgehäuses 1 weiter entfernt sind als die ersten Federwindungen 21, von dem Mantelelement 20 der Aufnahme 15 radial beabstandet sind.In contrast to the in Fig. 2 15 shown are in Fig. 3 only first spring windings 21 of the spring element 10 - here: the first and the second winding - with the jacket element 20 of the in Fig. 3 depicted receptacle 15 in contact, so that further spring windings 22 of the spring element 10, which continue from the bearing area 34 of the compressor housing 1 are removed than the first spring coils 21, are radially spaced from the casing element 20 of the receptacle 15.

Unter radialer Beabstandung im Sinne der vorliegenden Erfindung ist ein normal auf die Höhenrichtung, also jene Richtung, in die das Federelement 10 und gegebenenfalls der Federhalter 19 von der Aufnahme 15 absteht, stehender Abstand zwischen einer innerhalb des Aufnahmevolumens 32 angeordneten Federwindung und dem in selber Höhe mit der jeweiligen Federwindung angeordneten Abschnitt des Mantelelementes 20 zu verstehen.Radial spacing within the meaning of the present invention is a normal to the height direction, i.e. the direction in which the spring element 10 and possibly the spring holder 19 protrudes from the receptacle 15, between a spring coil arranged within the receptacle volume 32 and the one at the same height to be understood with the respective spring coil arranged portion of the jacket element 20.

Darüber hinaus führt die Beabstandung der weiteren Federwindungen 22 - hier: der dritten, vierten und fünften Windung - von dem Mantelelement 20 zu einer zusätzlichen Reduktion der Lärmemission des Kältemittelkompressors insgesamt, da Geräusche, die durch die Kollision des Federelementes 10 mit dem Mantelelement 20 hervorgerufen werden würden, weitestgehend vermieden werden können.In addition, the spacing of the further spring windings 22 - here: the third, fourth and fifth windings - from the casing element 20 leads to an additional reduction in the overall noise emission of the refrigerant compressor, since noises are caused by the collision of the spring element 10 with the casing element 20 can be avoided as far as possible.

Das Mantelelement 20 der Aufnahmen 15 aus Fig. 3 weist einen in Höhenrichtung 23 verlaufend angeordneten ersten Höhenabschnitt 25 sowie einen ebenfalls in Höhenrichtung 23 verlaufend angeordneten zweiten Höhenabschnitt 26 auf. Ein erster lichter Innendurchmesser 27 des hülsenförmig ausgebildeten Mantelelementes 20 ist über den gesamten ersten Höhenabschnitt 25 konstant. In seinem zweiten Höhenabschnitt 26 weist das Mantelelement 20 jedoch eine kontinuierlich von dem ersten lichten Innendurchmesser 27 hin zu einem am oberen Ende der Mantelelementes 20 erreichten maximalen lichten Innendurchmesser 31 verlaufende Durchmessererweiterung 24 auf. Dadurch wird sichergestellt, dass das Federelement 10 auch bei hohen Auslenkungen nicht mit dem Mantelelement 20 kollidieren kann.The jacket element 20 of the receptacles 15 from Fig. 3 has a first height section 25 arranged to run in height direction 23 and a second height section 26 also arranged to run in height direction 23. A first clear inner diameter 27 of the sleeve-shaped casing element 20 is constant over the entire first height section 25. In its second height section 26, however, the jacket element 20 has a diameter enlargement 24 running continuously from the first clear inner diameter 27 to a maximum clear inner diameter 31 reached at the upper end of the jacket element 20. This ensures that the spring element 10 cannot collide with the jacket element 20 even with high deflections.

Fig. 4 zeigt eine Aufsicht auf einen Bodenbereich des Kompressorgehäuses 1. In jeweils einem Lagerungsbereich 34 des Kompressorgehäuses 1 sind die Aufnahmen 15, 16, 17, 18 angeordnet. Jede Aufnahme 15, 16, 17, 18 hält dabei ein Federelement 10, 11, 12, 13 angeordnet. Zusammen bilden die Aufnahmen 15, 16, 17, 18, die gemäß den oben beschriebenen Ausführungsvarianten ausgebildet sein können, und die darin angeordneten Federelemente 10, 11, 12, 13 ein Lagerungssystem 3 für die Verdichter-Motor-Einheit 4 des Kompressors aus. Fig. 4 shows a plan view of a bottom area of the compressor housing 1. The receptacles 15, 16, 17, 18 are arranged in each of a bearing area 34 of the compressor housing 1. Each receptacle 15, 16, 17, 18 holds a spring element 10, 11, 12, 13 arranged. Together, the receptacles 15, 16, 17, 18, which can be designed according to the embodiment variants described above, and the spring elements 10, 11, 12, 13 arranged therein form a bearing system 3 for the compressor-motor unit 4 of the compressor.

BEZUGSZEICHENLISTEREFERENCE LIST

11
KompressorgehäuseCompressor housing
22
GehäuseinneresHousing interior
33
LagerungssystemStorage system
44th
Verdichter-Motor-EinheitCompressor-motor unit
55
Zylindercylinder
66th
KolbenPistons
77th
Kurbelwellecrankshaft
88th
Motorengine
99
Schmiermittellubricant
10,11,12,1310,11,12,13
FederelementSpring element
1414th
SumpfhöheSump height
15,16,17,1815,16,17,18
Aufnahmerecording
1919th
FederhalterPenholder
2020th
MantelelementShell element
2121
erste Federwindungfirst spring coil
2222nd
weitere Federwindungenmore spring coils
2323
HöhenrichtungHeight direction
2424
DurchmessererweiterungDiameter expansion
2525th
erster Höhenabschnittfirst height section
2626th
zweiter Höhenabschnittsecond height section
2727
erster lichter Innendurchmesserfirst clear inner diameter
2828
BodenelementFloor element
2929
ErhebungElevation
3030th
SchmiermittelsumpfLubricant sump
3131
maximaler lichter Innendurchmessermaximum clear inner diameter
3232
AufnahmevolumenRecording volume
3333
weiterer Federhalter der Verdichter-Motor-EinheitAnother spring holder for the compressor-motor unit
3434
LagerungsbereichStorage area

Claims (11)

  1. Compressor for compressing refrigerant circulating in a refrigeration circuit, comprising
    - a compressor housing (1) enclosing a housing interior (2) of the compressor,
    - a compressor-motor unit (4) comprising at least one piston (6) moving in a cylinder (5) and a motor (8),
    - at least one spring element (10, 11, 12, 13), preferably a plurality of spring elements (10, 11, 12, 13), via which spring element (10, 11, 12, 13) the compressor-motor unit (4) is connected in an elastically mounted manner to a bearing region (34) of the compressor housing (1), preferably to a base region of the compressor housing (1), as well as
    - at least one receptacle (15, 16, 17, 18) arranged on the bearing region for the at least one spring element (10, 11, 12, 13), preferably a receptacle (15, 16, 17, 18) for one spring element (10, 11, 12, 13) in each case, wherein the respective spring element (10, 11, 12, 13) is accommodated in the receptacle (15, 16, 17, 18),
    - wherein the receptacle (15, 16, 17, 18) comprises a base element (28) which is connected to the bearing region (34) and from which the spring element (10, 11, 12, 13) projects in a vertical direction (23), a casing element (20), which casing element (20) surrounds the spring element (10, 11, 12, 13) in a sleeve-like manner, and a receiving volume (32) delimited by the base element (28) and the casing element (20) in order to permit an accumulation of lubricant (9) in the receiving volume (32), so that a portion of the spring element (10, 11, 12, 13) arranged in the receiving volume (32) is surrounded by lubricant (9) in the operating state of the compressor,
    characterized in that
    the casing element (20) projects in the vertical direction (23) beyond a sump height (14) of a lubricant sump (30), which lubricant sump (30) is formed in the housing interior (2) in the operating state of the compressor.
  2. Compressor of claim 1, characterized in that a minimum clear inner diameter of the casing element (20) is greater than a maximum outer diameter of the spring element (10, 11, 12, 13).
  3. Compressor according to claim 1 or 2, characterized in that in an operating state of the compressor, in which operating state the at least one spring element (10, 11, 12, 13) is loaded only by the weight of the compressor-motor unit (4), at least the first three spring coils (21, 22), preferably 50% of the spring coils (21, 22), particularly preferably more than 70% of the spring coils (21, 22), of the spring element (10, 11, 12, 13) lie within the receiving volume (32) of the respective receptacle (15, 16, 17, 18).
  4. Compressor according to claim 3, characterized in that a spring travel extends at least between two of the spring coils (21, 22) of the respective spring element (10, 11, 12, 13) lying within the receiving volume (32) in the said operating state of the compressor.
  5. Compressor according to one of claims 1 to 4, characterized in that the receptacle (15, 16, 17, 18) has a pin-like spring holder (19) projecting in the vertical direction (23) from the receptacle (15, 16, 17, 18), via which spring holder (19) the spring element (10, 11, 12, 13) is connected with its inner side to the receptacle (15, 16, 17, 18) with frictional connection.
  6. Compressor according to claim 5, characterized in that the casing element (20) projects beyond the spring holder (19) of the receptacle (15, 16, 17, 18) in the vertical direction (23).
  7. Compressor according to one of claims 1 to 6, characterized in that the casing element (20) of the receptacle (15, 16, 17, 18) is of elastic design.
  8. Compressor according to claim 1 to 7, characterized in that at least the casing element (20), but preferably the entire receptacle (15, 16, 17, 18), is made of an elastomer, particularly preferably of a fluoroelastomer.
  9. Compressor according to one of claims 1 to 8, characterized in that a clear inner diameter of the casing element (20) increases monotonically as viewed in the vertical direction (23).
  10. Compressor according to claim 9, characterized in that the casing element (20) has a first height section (25) and a second height section (26), wherein the first height section (25) and the second height section (26) each extend in the vertical direction (23), wherein a first clear inner diameter (27) of the casing element (20) is constant in the region of the first height section (25), and wherein the second height section (26) of the casing element (20) has a diameter enlargement (24).
  11. Compressor according to claim 9 or 10, characterized in that the casing element (20), as viewed in a cross-section extending parallel to the vertical direction (23), has at least in sections the shape of an arc of a circle, wherein a circle corresponding to this arc of a circle has its center point outside the receptacle (15, 16, 17, 18).
EP18827065.6A 2017-12-22 2018-12-19 Compressor Active EP3714163B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17210207.1A EP3502473A1 (en) 2017-12-22 2017-12-22 Compressor
PCT/EP2018/085960 WO2019121993A1 (en) 2017-12-22 2018-12-19 Compressor

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Publication Number Publication Date
EP3714163A1 EP3714163A1 (en) 2020-09-30
EP3714163B1 true EP3714163B1 (en) 2021-11-24

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EP17210207.1A Withdrawn EP3502473A1 (en) 2017-12-22 2017-12-22 Compressor
EP18827065.6A Active EP3714163B1 (en) 2017-12-22 2018-12-19 Compressor

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Country Link
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EP (2) EP3502473A1 (en)
CN (1) CN111868381A (en)
WO (1) WO2019121993A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT15707U1 (en) * 2016-11-18 2018-04-15 Secop Gmbh REFRIGERANT COMPRESSOR
KR102414137B1 (en) * 2020-08-20 2022-06-28 엘지전자 주식회사 Enclosed compressor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977043A (en) * 1958-12-11 1961-03-28 Gen Electric Hermetic compressor unit mounting means
US3246836A (en) * 1964-01-10 1966-04-19 Westinghouse Electric Corp Spring systems for refrigerant compressors
US3857652A (en) * 1974-02-01 1974-12-31 Westinghouse Electric Corp Internal liquid refrigerant trap for hermetic compressors
US4236874A (en) * 1979-03-02 1980-12-02 Westinghouse Electric Corp. Dual capacity compressor with reversible motor and controls arrangement therefor
US4487555A (en) * 1981-02-13 1984-12-11 Mitsubishi Denki Kabushiki Kaisha Hermetic motor compressor
IT1161497B (en) * 1983-07-12 1987-03-18 Aspera Spa SUSPENSION DEVICE FOR HERMETIC REFRIGERATOR MOTORS AND SIMILAR
BRPI0904172A2 (en) * 2009-10-27 2011-06-28 Whirlpool Sa Suspension spring mounting arrangement on a refrigeration compressor
EP2798219A1 (en) * 2011-12-27 2014-11-05 Arçelik Anonim Sirketi A compressor comprising an oil sucking member
AT14651U1 (en) * 2015-05-22 2016-03-15 Secop Gmbh REFRIGERANT COMPRESSOR

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US20210363982A1 (en) 2021-11-25
EP3502473A1 (en) 2019-06-26
EP3714163A1 (en) 2020-09-30
WO2019121993A1 (en) 2019-06-27

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