EP2567093A2 - Discharge silencer for a hermetically encapsulated refrigerant compressor - Google Patents

Discharge silencer for a hermetically encapsulated refrigerant compressor

Info

Publication number
EP2567093A2
EP2567093A2 EP11724515A EP11724515A EP2567093A2 EP 2567093 A2 EP2567093 A2 EP 2567093A2 EP 11724515 A EP11724515 A EP 11724515A EP 11724515 A EP11724515 A EP 11724515A EP 2567093 A2 EP2567093 A2 EP 2567093A2
Authority
EP
European Patent Office
Prior art keywords
refrigerant
piston
pressure
cylinder unit
compressor
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.)
Granted
Application number
EP11724515A
Other languages
German (de)
French (fr)
Other versions
EP2567093B1 (en
Inventor
Alfred Freiberger
Michaela Kohl
Herwig Kulmer
Günther ZIPPL
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 Austria GmbH
Original Assignee
ACC Austria GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by ACC Austria GmbH filed Critical ACC Austria GmbH
Publication of EP2567093A2 publication Critical patent/EP2567093A2/en
Application granted granted Critical
Publication of EP2567093B1 publication Critical patent/EP2567093B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing
    • 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
    • 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
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • 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
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
    • 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
    • F04B39/121—Casings

Definitions

  • the present invention relates to a muffler for a hermetic-type refrigerant compressor comprising a refrigerant-compressing and a compression space having piston-cylinder unit and is surrounded by a hermetically sealed compressor housing, wherein the compression chamber via a suction muffler coming from an evaporator refrigerant is supplied and over the
  • Pressure silencer via the piston-cylinder unit delivers compressed refrigerant into a pressure line.
  • Refrigerant compressor technology is well known and serves the reduction of occurring in the discontinuous compression of refrigerant noise emissions of the
  • Refrigerant compressor Both metallic pressure silencers and non-metallic variants are known. Depending on the arrangement and design of the pressure silencer, different frequency ranges can be damped.
  • Pressure mufflers are characterized by the fact that in the volume of a body, a chamber system is formed, which must be flowed through by the compressed refrigerant relatively shortly after its compression, on the one hand the on the other hand, but also to be able to withhold the heat losses of the hot refrigerant after the compression process in opposite the pressure line large areas having pressure muffler.
  • the design of the chamber system depends primarily on the frequency range to be damped but also on thermal aspects.
  • a pressure muffler of the type mentioned above in that the pressure muffler has a base body, on which an inlet flange for the coming of the piston-cylinder unit refrigerant is arranged and an output channel, via which the refrigerant can be transferred into a pressure line supplying a condenser with compressed refrigerant and which base body has four side walls, each having a longitudinal extension and a comparatively shorter width extension, wherein the two larger side walls face each other and viewed in a direction parallel to the longitudinal direction each are executed curved in the same direction.
  • the pressure muffler has two sidewalls curved in the same direction in each case makes it possible to arrange it around a corner / edge or bend of the piston-cylinder unit and / or of components of the electric motor.
  • the pressure muffler can due to the two curvatures according to the invention with one side wall on the one hand closely to the piston-cylinder unit and the electric motor nestle with the other side wall but also closely to the inner wall of the compressor housing, in order as a result, the compressor housing as tight as possible to grow on the piston-cylinder unit and minimize the void inside the compressor housing can.
  • the curvature of the one surface-larger side wall is continuous, preferably following the shape of a circular arc.
  • Such an embodiment allows an ideal adaptation of the pressure silencer to the usually cylindrical or dome-shaped wall of the compressor housing.
  • the curvature of the other surface-larger side wall is discontinuous, in the form of at least two, arranged at an angle to each other partial surfaces.
  • the side wall of the pressure muffler can thus particularly space-saving to an edge or bend of the Electric motor (and / or components thereof) and / or the piston-cylinder unit are nestled.
  • the volume of the body is divided by several, the two side walls connecting partitions in different chambers.
  • Claim 5 refers to a hermetically sealed refrigerant compressor, with a refrigerant-compressing and a compression chamber having, driven by an electric motor piston-cylinder unit and a surrounding, hermetically sealed
  • Compressor housing wherein the compression chamber is supplied via a suction muffler with coming from an evaporator refrigerant and emits compressed refrigerant via the pressure muffler by means of the piston-cylinder unit in a pressure line.
  • the pressure silencer surrounds an edge or bend of the electric motor or a part thereof and / or the piston-cylinder unit in the direction of the edge or bend.
  • the edge or bend is an edge of the stator lamination stack of the electric motor.
  • the pressure silencer comprises a main body to which an inlet flange for the refrigerant coming from the piston-cylinder unit is arranged and an outlet channel, via which the refrigerant can be transferred into a pressure line supplying a condenser with compressed refrigerant and which main body has four side walls, of which the two in terms of area larger, opposite side walls are each curved in the same direction.
  • the curvature of the one surface-larger side wall is continuous, preferably following the shape of a circular arc.
  • the curvature of the other surface-larger side wall is discontinuous, ie. approximated, in the form of at least two, at an angle to each other arranged partial surfaces.
  • the pressure silencer is advantageously attached to the piston-cylinder unit in such a way that the edge region formed between the at least two partial surfaces extends immediately in front of and substantially parallel to the edge or bend of the electric motor and / or the piston-cylinder unit. In this way, a particularly space-saving arrangement of the pressure muffler is made possible within the compressor housing.
  • the space utilization within the compressor housing is further optimized by it is provided according to a further preferred embodiment of the invention, seen in a line of sight along the axis of the crankshaft of the electric motor, the curvature of one of the larger area side walls at least partially the curvature of the compressor housing in the region Arrangement of the pressure silencer within the compressor housing corresponds.
  • Fig.l is a schematic overall view of a hermetically sealed refrigerant compressor with inventive pressure silencer (top view)
  • FIG. 3 shows an axonometric oblique view of a pressure silencer according to the invention
  • Fig. 5 is a sectional view of the invention
  • FIG. 6 shows a further axonometric oblique view of the pressure silencer according to the invention
  • FIG. 3 shows an axonometric oblique view of a pressure muffler 6 according to the invention to be installed in a refrigerant compressor 1 with a main body 8 and an inlet flange 9 for a refrigerant coming from the piston-cylinder unit 4 (see FIG.
  • the main body 8 has an elongated basic shape and has four side walls 11,12,13,14, each having a longitudinal extent 33 and a comparatively shorter width extension, which side walls in a lower end portion of a substantially flat and orthogonal to the side walls eleventh , 12,13,14 extending bottom portion 28, which may be formed as a separate component, be limited or pass into these.
  • the side walls 11, 12, 13, 14 run out into the inlet flange 9.
  • a cap-shaped ceiling section 29 is formed in the transition region between the side walls 11, 12, 13 and the inlet flange 9.
  • the piston-cylinder unit 4 ' comprises an oscillating in a cylinder housing 4b piston 4a, which compresses a refrigerant in a compression chamber 3 in a known manner and transported in the direction of the pressure silencer 6 according to the invention.
  • Also visible in Fig.l are a rotatable about an axis 27 crankshaft 26 with an eccentric to the axis 27 arranged crankshaft journal 26a, on which a piston 4a driving connecting rod 30 is articulated.
  • the compressed in the compression chamber 3 refrigerant is sucked from the compressor housing, where it passes through a coming from a cooling chamber heat extracting evaporator suction line 34, previously sucked by the piston 4a via a suction muffler 5.
  • an outlet channel 10 is provided, via which the refrigerant in a condenser with a compressed refrigerant supplying pressure line 7a, b can be transferred.
  • FIG. 4 shows a view in the direction of the longitudinal extension 33 of the pressure muffler 6, it is provided according to the invention that of the four side walls 11, 12, 13, 14 of the main body 8, the two larger side walls 11 and 12 , each other are opposite and are each curved in the same direction.
  • the pressure silencer 6 surrounds an edge or bend 23 of the electric motor 25 or of parts thereof and / or the piston-cylinder unit 4 enclosing (see in particular Figure 7).
  • the edge or bend 23 enveloped by the pressure muffler 6 is an edge or bend 23 of a stator lamination stack 24 of the electric motor 25.
  • the present invention relates generally to a pressure muffler which may additionally or entirely alternatively surround parts of the piston-cylinder unit.
  • the left and right of the edge or bend 23 extending portions of the muffler 6 in a line of sight along the edge or bend 23 as close to the electric motor 25 or parts thereof and / or on the piston-cylinder Unit 4 or alternatively that those of the edge or bend 23 facing side surface 12 of the muffler 6, the negative counterpart to the contour of the electric motor 25 or parts thereof and / or the piston-cylinder unit 4 in the region of the edge or bend 23 form.
  • FIG. 7 shows the edge or bend 23 of the laminated stator core 24 in detail.
  • the cylinder housing 4b and parts of the electric motor 25 have been cut away.
  • the left and right of the edge or bend 23 extending contour edges 41 of the laminated stator core 24 or more precisely the individual superimposed stator blades can thereby again have any shape, so be either straight running as shown in Fig. 7 left (solid) and right (dashed) the edge or bend 23 is shown or unevenly curved, as in Fig.7 right edge or bend 23rd shown by solid lines, as required.
  • the curvature of the side wall 11 facing away from the electric motor 25 or the piston-cylinder unit 4 is continuous, preferably following the shape of a circular arc.
  • the side wall 12 facing the side wall 11 and facing the electric motor 25 or the piston-cylinder unit 4 can be unsteady, for example as shown in the form of at least two partial surfaces 12a, 12b approaching a continuous curvature and arranged at an angle to one another.
  • the side wall 12 has at least one bend or edge region 15 which divides the side wall 12 into at least two partial surfaces 12a, 12b.
  • the angle drawn in FIG. 4 between the outer surfaces of the partial surfaces 12a, 12b is less than 180 ° and preferably greater than 90 °. In the present embodiment, the angle between the partial surfaces 12a and 12b of the side wall 12 is approximately 150 °.
  • the pressure silencer 6 is in the present
  • the curvature of the side wall 11 at least partially corresponds to the curvature of the compressor housing 2 in the region of the arrangement of the pressure silencer 6 within the compressor housing 2.
  • the opening of the inlet flange 9 of the invention has the opening of the inlet flange 9 of the invention
  • Pressure silencer 6 has a substantially kidney-shaped cross section, which in the mounting position to the apparent in Fig.l cylinder housing 4b of the piston-cylinder unit 4, more precisely, to a compression chamber 3 of the cylinder housing 4b delimiting valve plate 35 connects, wherein the opening cross-section of the inlet flange. 9 one or more in the valve plate 35 existing pressure openings sealingly encloses.
  • the inlet flange 9 of the suction muffler 6 is fastened by means of one or more fasteners 38 on the cylinder housing 4b, wherein the at least one fastening element 38 presses the inlet flange 9 in the axial direction of the piston bore to the cylinder housing 4b.
  • Such an arrangement is disclosed in connection with the attachment of a cylinder head already in EP 1888918 Bl.
  • Fastener 38 designed as a clamping element, which with e.g. three Schenkeiförmigen end portions 38a latched to corresponding undercuts 40 on the outer surface of the cylinder housing 4b (see Figure 2).
  • the main body 8 of the pressure silencer 6 extends from an area adjacent to the valve plate 35 in the direction of the electric motor 25 or in the direction of a bottom region 39 of the compressor housing 2 Pressure silencer 6 is thus, viewed in an operating position of the refrigerant compressor 1, arranged below the piston-cylinder unit 4.
  • the volume of the main body 8 of the pressure muffler 6 is divided into several (in the present exemplary embodiment: five) chambers 19, 20 by a plurality of partitions 16, 17, 18, 19 connecting the two side walls 11, 12 , 21, 22, 36 shared.
  • the indicated in Figure 5 with arrows 31a-c refrigerant flows through all the chambers 19, 20, 21, 22, 36, before it is transferred via the outlet channel 10 from the pressure silencer 6 in the pressure line 7a, b.
  • the coming of the inlet flange 9 refrigerant is flowing through a first partition wall 16 in two in the direction of the bottom portion 28th
  • the refrigerant flow 31c is in this case deflected by 180 ° and in turn upwards, that is guided in a direction away from the bottom portion 28 before it again in the region of the ceiling portion 29 (the third chamber 21) deflected by 180 ° and in the direction of the bottom portion 28 and in more Sequence through the outlet channel 10 in the pressure line 7a, b is conveyed.
  • Refrigerants flow through the fourth chamber 22 and the fifth chamber 36 in a manner analogous to the flow processes taking place in the third chamber 21: refrigerant flows 31c 'and 31c "are conveyed from the bottom section 28 to the ceiling section 29 and back again to the bottom section 28 (the chambers 22, FIG. 36) before the refrigerant streams 31c 'and 31c''the Leave pressure silencer 6 through the outlet channel 10.
  • the outlet channel 10 thus unite all passed through the chambers 19, 20, 21, 22 and 36 refrigerant flows.

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

Abstract

The invention relates to a discharge silencer (6) for a hermetically encapsulated refrigerant compressor (1), which comprises a piston/cylinder unit (4) that compresses a refrigerant and has a compression chamber (3) and which is enclosed by a hermetically sealed compressor housing (2), wherein the compression chamber (3) is supplied with refrigerant coming from an evaporator through a suction silencer (5) and discharges refrigerant compressed by the piston/cylinder unit (4) into a pressure line (7a, b) through the discharge silencer (6). According to the invention, the discharge silencer (6) comprises a main body (8), on which an inlet flange (9) for the refrigerant coming from the piston/cylinder unit (4) is arranged, and an outlet channel (10), through which the refrigerant can be led into a pressure line (7a, b) that supplies a condenser with compressed refrigerant. The main body (8) has four side walls (11, 12, 13, 14), which each have a longitudinal extension and a width extension that is shorter than the longitudinal extension, wherein the two side walls (11, 12) having larger areas are opposite each other and are curved in the same direction when viewed in a direction parallel to the longitudinal extension.

Description

Druckschalldämpfer für einen hermetisch gekapselten  Pressure silencer for a hermetically sealed
Kältemittel erdichter  Refrigerant compressor
GEBIET DER ERFINDUNG FIELD OF THE INVENTION
Die vorliegende Erfindung bezieht sich auf einen Druckschalldämpfer für einen hermetisch gekapselten Kältemittelverdichter, der eine ein Kältemittel verdichtende und einen Verdichtungsraum aufweisende Kolben-Zylinder-Einheit umfasst und von einem hermetisch dichten Verdichtergehäuse umgeben ist, wobei der Verdichtungsraum über einen Saugschalldämpfer mit von einem Verdampfer kommenden Kältemittel versorgt wird und über denThe present invention relates to a muffler for a hermetic-type refrigerant compressor comprising a refrigerant-compressing and a compression space having piston-cylinder unit and is surrounded by a hermetically sealed compressor housing, wherein the compression chamber via a suction muffler coming from an evaporator refrigerant is supplied and over the
Druckschalldämpfer mittels der Kolben- Zylinder-Einheit verdichtetes Kältemittel in eine Druckleitung abgibt. Pressure silencer via the piston-cylinder unit delivers compressed refrigerant into a pressure line.
STAND DER TECHNIK STATE OF THE ART
Der Einsatz solcher Druckschalldämpfer in derThe use of such pressure silencer in the
Kältemittelverdichtertechnik ist hinlänglich bekannt und dient der Reduktion von bei der diskontinuierlichen Verdichtung von Kältemittel auftretenden Schallemissionen desRefrigerant compressor technology is well known and serves the reduction of occurring in the discontinuous compression of refrigerant noise emissions of the
Kältemittelverdichters. Es sind sowohl metallische Druckschalldämpfer als auch nichtmetallische Varianten bekannt. Je nach Anordnung und Ausführung des Druckschalldämpfers können unterschiedliche Frequenzbereiche bedämpft werden. Refrigerant compressor. Both metallic pressure silencers and non-metallic variants are known. Depending on the arrangement and design of the pressure silencer, different frequency ranges can be damped.
Druckschalldämpfer zeichnen sich dadurch aus, dass im Volumen eines Grundkörpers ein Kammersystem ausgebildet ist, welches vom verdichteten Kältemittel relativ knapp nach dessen Verdichtung durchströmt werden muss, um einerseits die gewünschte Bedämpfung erzielen zu können andererseits aber auch die Wärmeverluste des heißen Kältemittels nach dem Verdichtungsvorgang im gegenüber der Druckleitung große Flächen aufweisenden Druckschalldämpfer hintanhalten zu können. Die Gestaltung des Kammersystems richtet sich dabei vor allem nach dem zu bedämpfenden Frequenzbereich aber auch nach wärmtechnischen Gesichtspunkten. Pressure mufflers are characterized by the fact that in the volume of a body, a chamber system is formed, which must be flowed through by the compressed refrigerant relatively shortly after its compression, on the one hand the on the other hand, but also to be able to withhold the heat losses of the hot refrigerant after the compression process in opposite the pressure line large areas having pressure muffler. The design of the chamber system depends primarily on the frequency range to be damped but also on thermal aspects.
Die Anforderung, den Druckschalldämpfer so nahe wie möglich an das Auslassventil der Kolben-Zylinder-Einheit heranzubauen, um optimale Bedämpfung und minimale Wärmeverluste zu erzielen, ist in der Praxis oft mit Platzproblemen verbunden und hat dazu geführt, dass Druckschalldämpfer oft störend vom Zylinderkopf der Kolben-Zylinder-Einheit in das Innere des Verdichtergehäuses abstehend angeordnet wird, was unter anderem auch Auswirkungen auf die Größe des Verdichtergehäuses hat, das an dieser Stelle unnatürlich ausgebaucht erscheint. The requirement to install the muffler as close as possible to the exhaust valve of the piston-cylinder unit to achieve optimum damping and minimum heat losses is often associated with space problems in practice and has often caused mufflers to interfere with the cylinder head of the pistons Cylinder unit is arranged projecting into the interior of the compressor housing, which, inter alia, has an effect on the size of the compressor housing, which appears unnaturally bulged at this point.
Im Zuge der Erhöhung der Ressourceneffizienz und der damit einhergehenden Verkleinerung von Kältemittelkompressoren sowie deren hermetisch dichten Verdichtergehäusen ist es jedoch wünschenswert, den Druckschalldämpfer möglichst platzsparend im Verdichtergehäuse unterzubringen. DARSTELLUNG DER ERFINDUNG In the course of increasing resource efficiency and the associated reduction of refrigerant compressors and their hermetically sealed compressor housings, it is desirable to accommodate the pressure muffler space-saving as possible in the compressor housing. PRESENTATION OF THE INVENTION
Es ist daher die Aufgabe der vorliegenden Erfindung, einen Druckschalldämpfer für einen hermetisch dichten It is therefore the object of the present invention to provide a pressure muffler for a hermetically sealed
Kältemittelverdichter vorzusehen, der möglichst wenig Platz im Inneren des Verdichtergehäuses einnimmt. Provide refrigerant compressor, which occupies as little space in the interior of the compressor housing.
Erfindungsgemäß wird dies bei einem Druckschalldämpfer der eingangs erwähnten Art dadurch erreicht, dass der Druckschalldämpfer einen Grundkörper aufweist, an welchem ein Eintrittsflansch für das von der Kolben-Zylindereinheit kommende Kältemittel angeordnet ist und einen Ausgangskanal, über welchen das Kältemittel in eine einen Kondensator mit verdichtetem Kältemittel versorgende Druckleitung überführbar ist und welcher Grundkörper vier Seitenwände mit jeweils einer Längserstreckung und einer im Vergleich dazu kürzeren Breitenerstreckung aufweist, wobei die beiden flächenmäßig größeren Seitenwände einander gegenüberliegen und betrachtet in einer zur Längserstreckung parallelen Blickrichtung jeweils in die gleiche Richtung gekrümmt ausgeführt sind. According to the invention this is achieved in a pressure muffler of the type mentioned above in that the pressure muffler has a base body, on which an inlet flange for the coming of the piston-cylinder unit refrigerant is arranged and an output channel, via which the refrigerant can be transferred into a pressure line supplying a condenser with compressed refrigerant and which base body has four side walls, each having a longitudinal extension and a comparatively shorter width extension, wherein the two larger side walls face each other and viewed in a direction parallel to the longitudinal direction each are executed curved in the same direction.
Der Umstand, dass der Druckschalldämpfer zwei jeweils in die gleiche Richtung gekrümmte Seitenwände aufweist, ermöglicht die Anordnung um eine Ecke/Kante oder Biegung der Kolben- Zylinder-Einheit und/oder von Bestandteilen des Elektromotors. Der Druckschalldämpfer kann sich aufgrund der beiden erfindungsgemäßen Krümmungen mit der einen Seitenwand einerseits eng an die Kolben-Zylinder-Einheit bzw. den Elektromotor schmiegen mit der anderen Seitenwand aber auch eng an die Innenwand des Verdichtergehäuses, um in weiterer Folge auch das Verdichtergehäuse so eng wie möglich an die Kolben- Zylinder-Einheit heranbauen zu können und den Leerraum im Inneren des Verdichtergehäuses minimieren zu können. The fact that the pressure muffler has two sidewalls curved in the same direction in each case makes it possible to arrange it around a corner / edge or bend of the piston-cylinder unit and / or of components of the electric motor. The pressure muffler can due to the two curvatures according to the invention with one side wall on the one hand closely to the piston-cylinder unit and the electric motor nestle with the other side wall but also closely to the inner wall of the compressor housing, in order as a result, the compressor housing as tight as possible to grow on the piston-cylinder unit and minimize the void inside the compressor housing can.
Gemäß einer besonders bevorzugten Ausführungsvariante der Erfindung ist es vorgesehen, dass die Krümmung der einen flächenmäßig größeren Seitenwand stetig erfolgt, vorzugsweise der Form eines Kreisbogens folgend. Eine solche Ausführung erlaubt eine ideale Adaption des Druckschalldämpfers an die üblicherweise zylindrische bzw. kalottenförmige Wandung des Verdichtergehäuses . According to a particularly preferred embodiment of the invention, it is provided that the curvature of the one surface-larger side wall is continuous, preferably following the shape of a circular arc. Such an embodiment allows an ideal adaptation of the pressure silencer to the usually cylindrical or dome-shaped wall of the compressor housing.
Gemäß einer weiteren bevorzugten Ausführungsvariante der Erfindung ist es vorgesehen, dass die Krümmung der anderen flächenmäßig größeren Seitenwand unstetig, in Form zumindest zweier, in einem Winkel zueinander angeordneter Teilflächen erfolgt. Die Seitenwand des Druckschalldämpfers kann somit besonders platzsparend an eine Kante oder Biegung des Elektromotors (und/oder Bestandteilen davon) und/oder der Kolben- Zylinder-Einheit angeschmiegt werden. According to a further preferred embodiment of the invention, it is provided that the curvature of the other surface-larger side wall is discontinuous, in the form of at least two, arranged at an angle to each other partial surfaces. The side wall of the pressure muffler can thus particularly space-saving to an edge or bend of the Electric motor (and / or components thereof) and / or the piston-cylinder unit are nestled.
Zur Erzielung hoher Schalldämpfungseigenschaften bei gleichzeitig kompakter Bauweise des Druckschalldämpfers ist es gemäß einer weiteren bevorzugten Ausführungsvariante vorgesehen, dass das Volumen des Grundkörpers durch mehrere, die beiden Seitenwände verbindende Trennwände in verschiedene Kammern geteilt ist. To achieve high sound damping properties with a compact design of the pressure silencer, it is provided according to a further preferred embodiment that the volume of the body is divided by several, the two side walls connecting partitions in different chambers.
Anspruch 5 bezieht sich auf einen hermetisch gekapselten Kältemittelverdichter, mit einer ein Kältemittel verdichtenden und einen Verdichtungsraum aufweisenden, von einem Elektromotor angetriebenen Kolben-Zylinder-Einheit sowie einem diese umgebendes, hermetisch dichtenClaim 5 refers to a hermetically sealed refrigerant compressor, with a refrigerant-compressing and a compression chamber having, driven by an electric motor piston-cylinder unit and a surrounding, hermetically sealed
Verdichtergehäuse, wobei der Verdichtungsraum über einen Saugschalldämpfer mit von einem Verdampfer kommenden Kältemittel versorgt wird und über den Druckschalldämpfer mittels der Kolben-Zylinder-Einheit verdichtetes Kältemittel in eine Druckleitung abgibt. Unter Erzielung der bereits einleitend beschriebenen Vorteile ist es erfindungsgemäß vorgesehen, dass der Druckschalldämpfer eine Kante oder Biegung des Elektromotors bzw. eines Teiles davon und/oder der Kolben-Zylinder-Einheit in Blickrichtung der Kante oder Biegung gesehen einhüllend umgibt. Compressor housing, wherein the compression chamber is supplied via a suction muffler with coming from an evaporator refrigerant and emits compressed refrigerant via the pressure muffler by means of the piston-cylinder unit in a pressure line. While achieving the advantages already described in the introduction, it is provided according to the invention that the pressure silencer surrounds an edge or bend of the electric motor or a part thereof and / or the piston-cylinder unit in the direction of the edge or bend.
In einer besonders raumökonomischen Ausführungsvariante der Erfindung handelt es sich bei der Kante oder Biegung um eine Kante des Statorblechpakets des Elektromotors . In a particularly space-economical embodiment variant of the invention, the edge or bend is an edge of the stator lamination stack of the electric motor.
In erfindungsgemäßer Weise umfasst der Druckschalldämpfer einen Grundkörper, an welchem ein Eintrittsflansch für das von der Kolben-Zylindereinheit kommende Kältemittel angeordnet ist und ein Austrittskanal, über welchen das Kältemittel in eine einen Kondensator mit verdichtetem Kältemittel versorgende Druckleitung überführbar ist und welcher Grundkörper vier Seitenwände aufweist, von welchen die beiden flächenmäßig größeren, einander gegenüberliegenden Seitenwände jeweils in die gleiche Richtung gekrümmt ausgeführt sind. In accordance with the invention, the pressure silencer comprises a main body to which an inlet flange for the refrigerant coming from the piston-cylinder unit is arranged and an outlet channel, via which the refrigerant can be transferred into a pressure line supplying a condenser with compressed refrigerant and which main body has four side walls, of which the two in terms of area larger, opposite side walls are each curved in the same direction.
Gemäß einer bevorzugten Ausführungs ariante erfolgt die Krümmung der einen flächenmäßig größeren Seitenwand stetig, vorzugsweise der Form eines Kreisbogens folgend. According to a preferred embodiment variant, the curvature of the one surface-larger side wall is continuous, preferably following the shape of a circular arc.
Gemäß einer weiteren bevorzugten AusführungsVariante erfolgt die Krümmung der anderen flächenmäßig größeren Seitenwand unstetig, dh. angenähert, in Form zumindest zweier, in einem Winkel zueinander angeordneter Teilflächen. According to a further preferred embodiment, the curvature of the other surface-larger side wall is discontinuous, ie. approximated, in the form of at least two, at an angle to each other arranged partial surfaces.
Der Druckschalldämpfer ist vorteilhafterweise so an der Kolben-Zylinder-Einheit befestigt, dass der zwischen den mindestens zwei Teilflächen ausgebildete Kantenbereich unmittelbar vor der und im wesentlichen parallel zur Kante oder Biegung des Elektromotors und/oder der Kolben- Zylinder- Einheit verläuft. Auf diese Weise wird eine besonders platzsparende Anordnung des Druckschalldämpfers innerhalb des Verdichtergehäuses ermöglicht. The pressure silencer is advantageously attached to the piston-cylinder unit in such a way that the edge region formed between the at least two partial surfaces extends immediately in front of and substantially parallel to the edge or bend of the electric motor and / or the piston-cylinder unit. In this way, a particularly space-saving arrangement of the pressure muffler is made possible within the compressor housing.
Die Raumausnutzung innerhalb des Verdichtergehäuses wird weiter optimiert, indem es gemäß einer weiteren bevorzugten Ausführungsvariante der Erfindung vorgesehen ist, dass in einer Blickrichtung entlang der Achse der Kurbelwelle des Elektromotors gesehen, die Krümmung einer der flächenmäßig größeren Seitenwände zumindest abschnittsweise der Krümmung des Verdichtergehäuses im Bereich der Anordnung des Druckschalldämpfers innerhalb des Verdichtergehäuses entspricht . The space utilization within the compressor housing is further optimized by it is provided according to a further preferred embodiment of the invention, seen in a line of sight along the axis of the crankshaft of the electric motor, the curvature of one of the larger area side walls at least partially the curvature of the compressor housing in the region Arrangement of the pressure silencer within the compressor housing corresponds.
KURZE BESCHREIBUNG DER FIGUREN BRIEF DESCRIPTION OF THE FIGURES
Im Anschluss erfolgt nun eine kurze Beschreibung der Erfindung anhand von Figuren eines Ausführungsbeispiels. Dabei zeigt: Fig.l eine schematische Gesamtansicht eines hermetisch gekapselten Kältemittelverdichters mit erfindungsgemäßem Druckschalldämpfer (Draufsicht)Following is now a brief description of the invention with reference to figures of an embodiment. Showing: Fig.l is a schematic overall view of a hermetically sealed refrigerant compressor with inventive pressure silencer (top view)
Fig.2 eine Seitenansicht des Kältemittelverdichters aus 2 shows a side view of the refrigerant compressor
Fig.l mit partiell geschnittenem Verdichtergehäuse Fig.l with partially cut compressor housing
Fig.3 eine axonometrische Schrägansicht eines erfindungsgemäßen Druckschalldämpfers 3 shows an axonometric oblique view of a pressure silencer according to the invention
Fig.4 eine Untersicht auf einen erfindungsgemäßen  4 shows a bottom view of an inventive
Druckschalldämpfer  discharge silencer
Fig .5 eine Schnittansicht des erfindungsgemäßen Fig. 5 is a sectional view of the invention
Druckschalldämpfers  pressure silencer
Fig.6 eine weitere axonometrische Schrägansicht des erfindungsgemäßen Druckschalldämpfers  6 shows a further axonometric oblique view of the pressure silencer according to the invention
Fig.7 eine Schnittansicht entlang Line AA aus Fig.8  7 shows a sectional view along line AA of Figure 8
Fig.8 eine Seitenansicht eines hermetisch gekapselten 8 is a side view of a hermetically sealed
Kältemittelverdichters ohne Oberteil des Refrigerant compressor without upper part of the
Verdichtergehäuses compressor housing
Fig.3 zeigt eine axonometrische Schrägansicht eines in einem Kältemittelverdichter 1 einzubauenden erfindungsgemäßen Druckschalldämpfers 6 mit einem Grundkörper 8 und einem Eintrittsflansch 9 für ein von der Kolben-Zylindereinheit 4 (siehe Fig.l) kommendes Kältemittel. Der Grundkörper 8 weist eine längliche Grundform auf und besitzt vier Seitenwände 11,12,13,14, mit jeweils einer Längserstreckung 33 und einer im Vergleich dazu kürzeren Breitenerstreckung, welche Seitenwände in einem unteren Endbereich von einem im Wesentlichen flachen und orthogonal zu den Seitenwänden 11,12,13,14 verlaufenden Bodenabschnitt 28, der als separater Bauteil ausgebildet sein kann, begrenzt werden bzw. in diesen übergehen. In einem oberen Endbereich laufen die Seitenwände 11,12,13,14 in den Eintrittsflansch 9 aus. Wie in Fig.3 und Fig.6 ersichtlich, wird hierbei im Übergangsbereich zwischen den Seitenwänden 11,12,13 und dem Eintrittsflansch 9 ein kappenförmiger Deckenabschnitt 29 ausgebildet. 3 shows an axonometric oblique view of a pressure muffler 6 according to the invention to be installed in a refrigerant compressor 1 with a main body 8 and an inlet flange 9 for a refrigerant coming from the piston-cylinder unit 4 (see FIG. The main body 8 has an elongated basic shape and has four side walls 11,12,13,14, each having a longitudinal extent 33 and a comparatively shorter width extension, which side walls in a lower end portion of a substantially flat and orthogonal to the side walls eleventh , 12,13,14 extending bottom portion 28, which may be formed as a separate component, be limited or pass into these. In an upper end region, the side walls 11, 12, 13, 14 run out into the inlet flange 9. As in Fig.3 and 6, in this case a cap-shaped ceiling section 29 is formed in the transition region between the side walls 11, 12, 13 and the inlet flange 9.
Der hermetisch gekapselte Kältemittelverdichter 1, in Fig.l und Fig.2 ersichtlich, in welchem der erfindungsgemäße Druckschalldämpfer 6 eingebaut ist, ist von einem hermetisch abdichtenden Verdichtergehäuse 2 umgeben, dessen Oberteil in Fig.l nicht dargestellt ist, wobei innerhalb des Verdichtergehäuses 2 eine von einem Elektromotor 25 mit Rotor 42 angetriebene Kolben-Zylinder-Einheit 4 angeordnet ist. Die Kolben-Zylinder-Einheit 4 ' umfasst einen in einem Zylindergehäuse 4b oszillierenden Kolben 4a, welcher in bekannter Weise ein Kältemittel in einem Verdichtungsraum 3 komprimiert und in Richtung des erfindungsgemäßen Druckschalldämpfers 6 befördert. Ebenfalls in Fig.l ersichtlich sind eine um eine Achse 27 drehbare Kurbelwelle 26 mit einem exzentrisch zur Achse 27 angeordneten Kurbelwellenzapfen 26a, an welchem ein den Kolben 4a antreibendes Pleuel 30 angelenkt ist. The hermetically sealed refrigerant compressor 1, in Fig.l and Figure 2 seen in which the pressure silencer 6 according to the invention is installed, is surrounded by a hermetically sealing compressor housing 2, the upper part in Fig.l is not shown, wherein within the compressor housing 2 a is arranged by an electric motor 25 with a rotor 42 driven piston-cylinder unit 4. The piston-cylinder unit 4 ' comprises an oscillating in a cylinder housing 4b piston 4a, which compresses a refrigerant in a compression chamber 3 in a known manner and transported in the direction of the pressure silencer 6 according to the invention. Also visible in Fig.l are a rotatable about an axis 27 crankshaft 26 with an eccentric to the axis 27 arranged crankshaft journal 26a, on which a piston 4a driving connecting rod 30 is articulated.
Das im Verdichtungsraum 3 komprimierte Kältemittel wird aus dem Verdichtergehäuse, wohin es über eine von einem einem Kühlraum Wärme entziehenden Verdampfer kommenden Saugleitung 34 gelangt, zuvor vom Kolben 4a über einen Saugschalldämpfer 5 angesaugt . The compressed in the compression chamber 3 refrigerant is sucked from the compressor housing, where it passes through a coming from a cooling chamber heat extracting evaporator suction line 34, previously sucked by the piston 4a via a suction muffler 5.
Im Bodenabschnitt 28 des Druckschalldämpfers 6 ist ein Austrittskanal 10 vorgesehen, über welchen das Kältemittel in eine einen Kondensator mit verdichtetem Kältemittel versorgende Druckleitung 7a, b überführbar ist. In the bottom portion 28 of the pressure muffler 6, an outlet channel 10 is provided, via which the refrigerant in a condenser with a compressed refrigerant supplying pressure line 7a, b can be transferred.
Wie insbesondere auch in Fig.4 ersichtlich, die eine Ansicht in Richtung der Längserstreckung 33 des Druckschalldämpfers 6 zeigt, ist es erfindungsgemäß vorgesehen, dass von den vier Seitenwänden 11,12,13,14 des Grundkörpers 8 die beiden flächenmäßig größeren Seitenwände 11 und 12, einander gegenüberliegen und jeweils in die gleiche Richtung gekrümmt ausgeführt sind. As can also be seen in FIG. 4, which shows a view in the direction of the longitudinal extension 33 of the pressure muffler 6, it is provided according to the invention that of the four side walls 11, 12, 13, 14 of the main body 8, the two larger side walls 11 and 12 , each other are opposite and are each curved in the same direction.
Auf diese Weise ist es möglich, dass der Druckschalldämpfer 6 eine Kante oder Biegung 23 des Elektromotors 25 bzw. von Teilen davon und/oder der Kolben- Zylinder-Einheit 4 einhüllend umgibt (siehe insbesondere Fig.7) . Im vorliegenden Ausführungsbeispiel handelt es sich bei der vom Druckschalldämpfer 6 eingehüllten Kante oder Biegung 23 um eine Kante oder Biegung 23 eines Statorblechpakets 24 des Elektromotors 25. Im Folgenden wird der Übersichtlichkeit wegen lediglich auf das konkrete Ausführungsbeispiel verwiesen. Es ist jedoch für den Fachmann klar, dass sich die vorliegende Erfindung ganz allgemein auf einen Druckschalldämpfer bezieht, der zusätzlich oder gänzlich alternativ auch Teile der Kolben-Zylinder-Einheit einhüllend umgeben kann .  In this way, it is possible that the pressure silencer 6 surrounds an edge or bend 23 of the electric motor 25 or of parts thereof and / or the piston-cylinder unit 4 enclosing (see in particular Figure 7). In the present exemplary embodiment, the edge or bend 23 enveloped by the pressure muffler 6 is an edge or bend 23 of a stator lamination stack 24 of the electric motor 25. For the sake of clarity, reference will be made below to the specific exemplary embodiment. However, it will be clear to those skilled in the art that the present invention relates generally to a pressure muffler which may additionally or entirely alternatively surround parts of the piston-cylinder unit.
Mit einhüllend umgeben ist es erfindungsgemäß gemeint, dass die links und rechts der Kante oder Biegung 23 verlaufenden Abschnitte des Druckschalldämpfers 6 in einer Blickrichtung entlang der Kante oder Biegung 23 möglichst nahe am Elektromotor 25 bzw. Teilen davon und/oder an der Kolben- Zylinder-Einheit 4 verlaufen oder alternativ, dass jene der Kante oder Biegung 23 zugewandte Seitenfläche 12 des Druckschalldämpfers 6 das negative Gegenstück zur Kontur des Elektromotors 25 bzw. Teilen davon und/oder der Kolben- Zylinder-Einheit 4 im Bereich der Kante oder Biegung 23 bilden .  Surrounded by enclosing it is inventively meant that the left and right of the edge or bend 23 extending portions of the muffler 6 in a line of sight along the edge or bend 23 as close to the electric motor 25 or parts thereof and / or on the piston-cylinder Unit 4 or alternatively that those of the edge or bend 23 facing side surface 12 of the muffler 6, the negative counterpart to the contour of the electric motor 25 or parts thereof and / or the piston-cylinder unit 4 in the region of the edge or bend 23 form.
Fig.7 zeigt die Kante oder Biegung 23 des Statorblechpakets 24 im Detail. Der Übersichtlichkeit wegen wurde in Fig.7, wie aus Fig.8 ersichtlich, das Zylindergehäuse 4b sowie Teile des Elektromotors 25 weggeschnitten. Die links und rechts der Kante oder Biegung 23 verlaufenden Umrisskanten 41 des Statorblechpakets 24 bzw. genauer der einzelnen aufeinanderliegend angeordneten Statorlamellen können dabei wiederum beliebige Gestalt aufweisen, also entweder gerade verlaufend ausgebildet sein wie dies in Fig. 7 links (durchgezogen) und rechts ( strichliert ) der Kante oder Biegung 23 dargestellt ist oder aber ungleichmäßig gekrümmt, wie dies in Fig.7 rechts der Kante oder Biegung 23 mit durchgezogenen Strichen dargestellt ist, je nach Anforderung. 7 shows the edge or bend 23 of the laminated stator core 24 in detail. For the sake of clarity, in FIG. 7, as can be seen from FIG. 8, the cylinder housing 4b and parts of the electric motor 25 have been cut away. The left and right of the edge or bend 23 extending contour edges 41 of the laminated stator core 24 or more precisely the individual superimposed stator blades can thereby again have any shape, so be either straight running as shown in Fig. 7 left (solid) and right (dashed) the edge or bend 23 is shown or unevenly curved, as in Fig.7 right edge or bend 23rd shown by solid lines, as required.
Wie in Fig. ersichtlich, verläuft die Krümmung der vom Elektromotor 25 bzw. der Kolben-Zylinder-Einheit 4 abgewandten Seitenwand 11 stetig, vorzugsweise der Form eines Kreisbogens folgend.  As can be seen in FIG. 1, the curvature of the side wall 11 facing away from the electric motor 25 or the piston-cylinder unit 4 is continuous, preferably following the shape of a circular arc.
Die zur Seitenwand 11 gegenüberliegende, dem Elektromotor 25 bzw. der Kolben-Zylinder-Einheit 4 zugewandte Seitenwand 12 kann hingegen unstetig verlaufen, beispielsweise wie dargestellt in Form zumindest zweier, eine stetige Krümmung annähernde, in einem Winkel zueinander angeordnete Teilflächen 12a, 12b. Mit anderen Worten weist die Seitenwand 12 mindestens einen Knick bzw. einen Kantenbereich 15 auf, welcher die Seitenwand 12 in mindestens zwei Teilflächen 12a, 12b unterteilt. On the other hand, the side wall 12 facing the side wall 11 and facing the electric motor 25 or the piston-cylinder unit 4 can be unsteady, for example as shown in the form of at least two partial surfaces 12a, 12b approaching a continuous curvature and arranged at an angle to one another. In other words, the side wall 12 has at least one bend or edge region 15 which divides the side wall 12 into at least two partial surfaces 12a, 12b.
Der in Fig .4 eingezeichnete, zwischen den (dem Elektromotor 25 bzw. der Kolben-Zylinder-Einheit 4 zugewandten) Außenflächen der Teilflächen 12a, 12b gemessene Winkel ist kleiner als 180° und vorzugsweise größer als 90°. Im vorliegenden Ausführungsbeispiel beträgt der Winkel zwischen den Teilflächen 12a und 12b der Seitenwand 12 ca. 150°. The angle drawn in FIG. 4 between the outer surfaces of the partial surfaces 12a, 12b (facing the electric motor 25 or the piston-cylinder unit 4) is less than 180 ° and preferably greater than 90 °. In the present embodiment, the angle between the partial surfaces 12a and 12b of the side wall 12 is approximately 150 °.
Der Druckschalldämpfer 6 ist im vorliegenden The pressure silencer 6 is in the present
Ausführungsbeispiel so an der Kolben-Zylinder-Einheit 4 befestigt, dass der zwischen den mindestens zwei Teilflächen 12a, 12b ausgebildete Kantenbereich 15 unmittelbar vor der Kante oder Biegung 23 des Elektromotors 25 bzw. der Kolben- Zylinder-Einheit 4 verläuft. Embodiment attached to the piston-cylinder unit 4, that between the at least two partial surfaces 12a, 12b formed edge portion 15 immediately before the edge or bend 23 of the electric motor 25 and the piston-cylinder unit 4 extends.
Des Weiteren kann es vorgesehen sein, dass in einer Blickrichtung entlang der Achse 27 der Kurbelwelle 26 des Elektromotors 25 gesehen, die Krümmung der Seitenwand 11 zumindest abschnittsweise der Krümmung des Verdichtergehäuses 2 im Bereich der Anordnung des Druckschalldämpfers 6 innerhalb des Verdichtergehäuses 2 entspricht. Wie in Fig.3 ersichtlich, besitzt die Öffnung des Eintrittsflansches 9 des erfindungsgemäßenFurthermore, it can be provided that in a viewing direction along the axis 27 of the crankshaft 26 of the Electric motor 25 seen, the curvature of the side wall 11 at least partially corresponds to the curvature of the compressor housing 2 in the region of the arrangement of the pressure silencer 6 within the compressor housing 2. As can be seen in Figure 3, has the opening of the inlet flange 9 of the invention
Druckschalldämpfers 6 einen im Wesentlichen nierenförmigen Querschnitt, welcher in Montageposition an das in Fig.l ersichtliche Zylindergehäuse 4b der Kolben-Zylinder-Einheit 4, genauer gesagt, an eine den Verdichtungsraum 3 des Zylindergehäuses 4b begrenzende Ventilplatte 35 anschließt, wobei der Öffnungsquerschnitt des Eintrittsflanschs 9 eine oder mehrere in der Ventilplatte 35 vorhandene Drucköffnungen abdichtend umschließt. In einer bevorzugten Ausführungsvariante wird der Eintrittsflansch 9 des Saugschalldämpfers 6 mittels eines oder mehrerer Befestigungselemente 38 am Zylindergehäuse 4b befestigt, wobei das mindestens eine Befestigungselement 38 den Eintrittsflansch 9 in axialer Richtung der Kolbenbohrung an das Zylindergehäuse 4b anpresst. Eine solche Anordnung ist in Zusammenhang mit der Befestigung eines Zylinderkopfes bereits in der EP 1888918 Bl offenbart. Pressure silencer 6 has a substantially kidney-shaped cross section, which in the mounting position to the apparent in Fig.l cylinder housing 4b of the piston-cylinder unit 4, more precisely, to a compression chamber 3 of the cylinder housing 4b delimiting valve plate 35 connects, wherein the opening cross-section of the inlet flange. 9 one or more in the valve plate 35 existing pressure openings sealingly encloses. In a preferred embodiment, the inlet flange 9 of the suction muffler 6 is fastened by means of one or more fasteners 38 on the cylinder housing 4b, wherein the at least one fastening element 38 presses the inlet flange 9 in the axial direction of the piston bore to the cylinder housing 4b. Such an arrangement is disclosed in connection with the attachment of a cylinder head already in EP 1888918 Bl.
Im Ausführungsbeispiel gemäß Fig.l ist das In the embodiment according to Fig.l is the
Befestigungselement 38 als Klemmelement ausgeführt, welches mit z.B. drei schenkeiförmigen Endbereichen 38a an korrespondierenden Hinterschneidungen 40 am Außenmantel des Zylindergehäuses 4b verrastet (siehe Fig.2). Fastener 38 designed as a clamping element, which with e.g. three Schenkeiförmigen end portions 38a latched to corresponding undercuts 40 on the outer surface of the cylinder housing 4b (see Figure 2).
In einer bevorzugten Ausführungsvariante der Erfindung erstreckt sich der Grundkörper 8 des erfindungsgemäßen Druckschalldämpfers 6 von einem zur Ventilplatte 35 benachbarten Bereich in Richtung des Elektromotors 25 bzw. in Richtung eines Bodenbereichs 39 des Verdichtergehäuses 2. Der überwiegende Teil des Druckschalldämpfers 6 ist somit, betrachtet in einer Betriebsposition des Kältemittelverdichters 1, unterhalb der Kolben-Zylinder-Einheit 4 angeordnet. In a preferred embodiment of the invention, the main body 8 of the pressure silencer 6 according to the invention extends from an area adjacent to the valve plate 35 in the direction of the electric motor 25 or in the direction of a bottom region 39 of the compressor housing 2 Pressure silencer 6 is thus, viewed in an operating position of the refrigerant compressor 1, arranged below the piston-cylinder unit 4.
Wie in einer Schnittdarstellung gemäß Fig.5 ersichtlich, ist das Volumen des Grundkörpers 8 des Druckschalldämpfers 6 durch mehrere, die beiden Seitenwände 11,12 verbindende Trennwände 16, 17, 18, 19 in verschiedene (im vorliegenden Ausführungsbeispiel: fünf) Kammern 19, 20, 21, 22, 36 geteilt . Das in Fig.5 mit Pfeilen 31a-c angedeutete Kältemittel durchströmt hierbei sämtliche Kammern 19, 20, 21, 22, 36, bevor es über den Austrittskanal 10 aus dem Druckschalldämpfer 6 in die Druckleitung 7a, b übergeführt wird . Wie in Fig.5 ersichtlich, wird das vom Eintrittsflansch 9 kommende Kältemittel durch eine erste Trennwand 16 in zwei in Richtung des Bodenabschnitts 28 strömendeAs can be seen in a sectional illustration according to FIG. 5, the volume of the main body 8 of the pressure muffler 6 is divided into several (in the present exemplary embodiment: five) chambers 19, 20 by a plurality of partitions 16, 17, 18, 19 connecting the two side walls 11, 12 , 21, 22, 36 shared. The indicated in Figure 5 with arrows 31a-c refrigerant flows through all the chambers 19, 20, 21, 22, 36, before it is transferred via the outlet channel 10 from the pressure silencer 6 in the pressure line 7a, b. As can be seen in Figure 5, the coming of the inlet flange 9 refrigerant is flowing through a first partition wall 16 in two in the direction of the bottom portion 28th
Kältemittelströme 31a und 31b geteilt, welche sich in einem zum Bodenabschnitt 28 benachbarten Sammelbereich 32 wieder zu einem Kältemittelstrom 31c vereinigen und in die dritte Kammer 21 eintreten. Der Kältemittelstrom 31c wird hierbei um 180° umgelenkt und wiederum aufwärts, d.h. in eine vom Bodenabschnitt 28 abgewandte Richtung geführt, bevor er im Bereich des Deckenabschnitts 29 (der dritten Kammer 21) erneut um 180° umgelenkt und in Richtung des Bodenabschnitts 28 und in weiterer Folge durch den Austrittskanal 10 in die Druckleitung 7a, b befördert wird. Analog zu den in der dritten Kammer 21 erfolgenden Strömungsvorgängen werden auch die vierte Kammer 22 und die fünfte Kammer 36 von Kältemittel durchströmt: Kältemittelströme 31c' und 31c'' werden vom Bodenabschnitt 28 zum Deckenabschnitt 29 und wiederum zurück zum Bodenabschnitt 28 (der Kammern 22, 36) geführt, bevor die Kältemittelströme 31c' und 31c'' den Druckschalldämpfer 6 durch den Austrittskanal 10 verlassen. Im Austrittskanal 10 vereinigen somit sämtliche durch die Kammern 19, 20, 21, 22 und 36 geführten Kältemittelströme. Refrigerant streams 31a and 31b divided, which unite again in a collecting section 32 adjacent to the bottom portion 28 to a refrigerant flow 31c and enter the third chamber 21. The refrigerant flow 31c is in this case deflected by 180 ° and in turn upwards, that is guided in a direction away from the bottom portion 28 before it again in the region of the ceiling portion 29 (the third chamber 21) deflected by 180 ° and in the direction of the bottom portion 28 and in more Sequence through the outlet channel 10 in the pressure line 7a, b is conveyed. Refrigerants flow through the fourth chamber 22 and the fifth chamber 36 in a manner analogous to the flow processes taking place in the third chamber 21: refrigerant flows 31c 'and 31c "are conveyed from the bottom section 28 to the ceiling section 29 and back again to the bottom section 28 (the chambers 22, FIG. 36) before the refrigerant streams 31c 'and 31c''the Leave pressure silencer 6 through the outlet channel 10. In the outlet channel 10 thus unite all passed through the chambers 19, 20, 21, 22 and 36 refrigerant flows.
BEZUGSZEICHENLISTE Kältemittelverdichter REFERENCE LIST Refrigerant compressor
Verdichtergehäuse  compressor housing
Verdichtungsraum  compression chamber
Kolben-Zylinder-Einheit Piston-cylinder unit
a Kolbena piston
b Zylindergehäuse b cylinder housing
Saugschalldämpfer  suction silencer
Druckschalldämpfer discharge silencer
a, b Druckleitung a, b pressure line
Grundkörper des Druckschalldämpfers Eintrittsflansch Basic body of the pressure silencer inlet flange
0 Austrittskanal0 exit channel
1 Seitenwand des Druckschalldämpfers2 Seitenwand des Druckschalldämpfers2a, 12b Teilflächen der der Seitenwand 123 Seitenwand des Druckschalldämpfers4 Seitenwand des Druckschalldämpfers5 Kante an Seitenwand 121 Side wall of the muffler2 Side wall of the muffler2a, 12b Part surfaces of the side wall 123 Side wall of the muffler4 Side wall of the muffler5 Edge on side wall 12
6 erste Trennwand6 first partition
7 zweite Trennwand7 second partition
8 dritte Trennwand 19 erste Kammer 8 third partition 19 first chamber
20 zweite Kammer  20 second chamber
21 dritte Kammer  21 third chamber
22 vierte Kammer  22 fourth chamber
23 Kante/Biegung des E-Motors 23 Edge / bend of the electric motor
24 Statorblechpaket  24 stator core
25 Elektromotor  25 electric motor
26 Kurbelwelle  26 crankshaft
27 Achse der Kurbelwelle 26  27 axis of the crankshaft 26th
28 Bodenabschnitt des Druckschalldämpfers 6 28 bottom section of the pressure silencer 6
29 Deckenabschnitt des Druckschalldämpfers 6  29 ceiling section of the pressure silencer 6
30 Pleuel  30 connecting rods
31a, 31b, 31c, 31C , 31c' ' Kältemittelströme  31a, 31b, 31c, 31C, 31c '' refrigerant flows
32 Sammelbereich  32 collection area
33 Längserstreckung der Seitenflächen des Grundkörpers33 Longitudinal extension of the side surfaces of the body
34 Saugleitung 34 suction line
35 Ventilplatte  35 valve plate
36 fünfte Kammer  36 fifth chamber
37 vierte Trennwand  37 fourth partition
38 Befestigungselement 38 fastener
39 Bodenbereich des Verdichtergehäuses 2  39 Bottom area of the compressor housing 2
40 Hinterschneidungen an Zylindergehäuse 4b Umrisskanten des Statorblechpaktes bzw. der Statorlamellen Rotor des Elektromotors 40 undercuts to cylinder housing 4b Outline edges of the Statorblechpaktes or the stator blades rotor of the electric motor

Claims

A N S P R Ü C H E
Druckschalldämpfer (6) für einen hermetisch gekapselten Kältemittelverdichter (1), der eine ein Kältemittel verdichtende und einen Verdichtungsraum (3) aufweisende Kolben-Zylinder-Einheit (4) umfasst und von einem hermetisch dichten Verdichtergehäuse (2) umgeben ist, wobei der Verdichtungsraum (3) über einenA pressure muffler (6) for a hermetically sealed refrigerant compressor (1) comprising a piston-cylinder unit (4) which compresses a refrigerant and has a compression chamber (3) and is surrounded by a hermetically sealed compressor housing (2), the compression chamber ( 3) over one
Saugschalldämpfer (5) mit von einem Verdampfer kommenden Kältemittel versorgt wird und über den Druckschalldämpfer (6) mittels der Kolben-Zylinder- Einheit (4) verdichtetes Kältemittel in eine Druckleitung (7a,b) abgibt, dadurch gekennzeichnet, dass der Druckschalldämpfer (6) einen Grundkörper (8) aufweist, an welchem ein Eintrittsflansch (9) für das von der Kolben-Zylinder-Einheit (4) kommende Kältemittel angeordnet ist und ein Austrittskanal (10) , über welchen das Kältemittel in eine einen Kondensator mit verdichtetem Kältemittel versorgende Druckleitung (7a, b) überführbar ist und welcher Grundkörper (8) vierSuction muffler (5) is supplied with refrigerant coming from an evaporator and via the pressure muffler (6) by means of the piston-cylinder unit (4) compressed refrigerant in a pressure line (7a, b) emits, characterized in that the pressure muffler (6) a base body (8), on which an inlet flange (9) for the refrigerant coming from the piston-cylinder unit (4) is arranged, and an outlet channel (10) via which the refrigerant flows into a compressed line supplying a condenser with a refrigerant (7a, b) is convertible and which basic body (8) four
Seitenwände (11,12,13,14) mit jeweils einerSide walls (11,12,13,14) each with one
Längserstreckung und einer im Vergleich dazu kürzeren Breitenerstreckung aufweist, wobei die beiden flächenmäßig größeren Seitenwände (11,12) einander gegenüberliegen und betrachtet in einer zur Längserstreckung parallelen Blickrichtung jeweils in die gleiche Richtung gekrümmt ausgeführt sind. Longitudinal extent and a comparison in comparison shorter width extension, wherein the two larger area side walls (11,12) facing each other and viewed in a direction parallel to the longitudinal direction of view are each designed curved in the same direction.
Druckschalldämpfer (6) nach Anspruch 1, dadurch gekennzeichnet, dass die Krümmung der einen flächenmäßig größeren Seitenwand (11) stetig erfolgt, vorzugsweise der Form eines Kreisbogens folgend. Pressure muffler (6) according to claim 1, characterized in that the curvature of a surface larger side wall (11) is continuous, preferably following the shape of a circular arc.
Druckschalldämpfer (6) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Krümmung der anderen flächenmäßig größeren Seitenwand (12) unstetig, in Form zumindest zweier, in einem Winkel zueinander angeordneter Teilflächen (12a, 12b), erfolgt. Pressure muffler (6) according to claim 1 or 2, characterized in that the curvature of the other larger area side wall (12) discontinuous, in shape at least two, at an angle to each other arranged partial surfaces (12a, 12b) takes place.
Druckschalldämpfer (6) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Volumen des Grundkörpers (8) durch mehrere, die beiden größeren Seitenwände (11,12) verbindendePressure silencer (6) according to one of claims 1 to 3, characterized in that the volume of the base body (8) by a plurality, the two larger side walls (11,12) connecting
Trennwände (16, 17, 18) in verschiedenePartitions (16, 17, 18) in different
Kammern (19, 20, 21, 22) geteilt ist. Chambers (19, 20, 21, 22) is divided.
Hermetisch gekapselter Kältemittelverdichter (1) , mit einer ein Kältemittel verdichtenden und einen Verdichtungsraum (3) aufweisenden, von einem Elektromotor (25) angetriebenen Kolben- Zylinder- Einheit (4) sowie einem diese umgebendes, hermetisch dichten Verdichtergehäuse (2) , wobei derHermetically sealed refrigerant compressor (1), comprising a piston-cylinder unit (4), which compresses a refrigerant and has a compression chamber (3), driven by an electric motor (25), and a hermetically sealed compressor housing (2) surrounding the latter
Verdichtungsraum (3) über einen Saugschalldämpfer (5) mit von einem Verdampfer kommenden Kältemittel versorgt wird und über den Druckschalldämpfer (6) mittels der Kolben- Zylinder-Einheit (4) verdichtetes Kältemittel in eine Druckleitung (7a, b) abgibt, dadurch gekennzeichnet, dass der Druckschalldämpfer (6) eine Kante oder Biegung (23) des Elektromotors (25) bzw. eines Teiles davon und/oder der Kolben-Zylinder-Einheit (4) in Blickrichtung der Kante oder Biegung (23) gesehen einhüllend umgibt. Compression chamber (3) is supplied via a suction muffler (5) coming from an evaporator refrigerant and via the pressure muffler (6) by means of the piston-cylinder unit (4) compressed refrigerant in a pressure line (7a, b), characterized the pressure silencer (6) surrounds an edge or bend (23) of the electric motor (25) or a part thereof and / or the piston-cylinder unit (4) in the direction of the edge or bend (23).
Hermetisch gekapselter Kältemittelverdichter (1) nach Anspruch 6, dadurch gekennzeichnet, dass es sich bei der Kante oder Biegung (23) um eine Kante des Statorblechpakets (24) des Elektromotors (25) handelt. Hermetically sealed refrigerant compressor (1) according to claim 6, characterized in that the edge or bend (23) is an edge of the laminated stator core (24) of the electric motor (25).
Hermetisch gekapselter Kältemittelverdichter (1) nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass derHermetically sealed refrigerant compressor (1) according to claim 5 or 6, characterized in that the
Druckschalldämpfer (6) einen Grundkörper (8) aufweist, an welchem ein Eintrittsflansch (9) für das von der Kolben- Zylinder-Einheit (4) kommende Kältemittel angeordnet ist und ein Austrittskanal (10) , über welchen das Kältemittel in eine einen Kondensator mit verdichtetem Kältemittel versorgende Druckleitung (7a, b) überführbar ist und welcher Grundkörper (8) vier Seitenwände (11,12,13,14) mit jeweils einer Längserstreckung und einer im Vergleich dazu kürzeren Breitenerstreckung aufweist, wobei die beiden flächenmäßig größeren Seitenwände (11,12) einander gegenüberliegen und betrachtet in einer zur Längserstreckung parallelen Blickrichtung jeweils in die gleiche Richtung gekrümmt ausgeführt sind. 8. Hermetisch gekapselter Kältemittelverdichter (1) nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Krümmung der einen flächenmäßig größeren Seitenwand (11) stetig erfolgt, vorzugsweise der Form eines Kreisbogens folgend. 9. Hermetisch gekapselter Kältemittelverdichter (1) nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Krümmung der anderen flächenmäßig größeren Seitenwand (12) unstetig, in Form zumindest zweier, in einem Winkel zueinander angeordneter Teilflächen (12a, 12b), erfolgt. Pressure silencer (6) has a base body (8) on which an inlet flange (9) for the coming of the piston-cylinder unit (4) refrigerant is arranged and an outlet channel (10), via which the refrigerant in a condenser with compressed refrigerant supplying pressure line (7a, b) can be transferred and which base body (8) has four side walls (11,12,13,14), each having a longitudinal extent and a shorter compared to a broader extent, the two in terms of area larger side walls (11,12) facing each other and viewed in a direction parallel to the longitudinal extension viewing direction are each designed curved in the same direction. 8. hermetically sealed refrigerant compressor (1) according to one of claims 5 to 7, characterized in that the curvature of a larger area side wall (11) takes place continuously, preferably following the shape of a circular arc. 9. Hermetically encapsulated refrigerant compressor (1) according to one of claims 5 to 8, characterized in that the curvature of the other larger area side wall (12) discontinuously, in the form of at least two, at an angle to each other arranged partial surfaces (12a, 12b) takes place ,
10. Hermetisch gekapselter Kältemittelverdichter (1) nach Anspruch 9, dadurch gekennzeichnet, dass der Druckschalldämpfer (6) so an der Kolben-Zylinder- Einheit (4) befestigt ist, dass die zwischen den mindestens zwei Teilflächen (12a, 12b) ausgebildete10. Hermetically encapsulated refrigerant compressor (1) according to claim 9, characterized in that the pressure silencer (6) is attached to the piston-cylinder unit (4) that between the at least two partial surfaces (12 a, 12 b) formed
Kante (15) unmittelbar vor der Kante oder Biegung (23) des Elektromotors (25) und/oder, der Kolben-Zylinder-Einheit (4) verläuft. Edge (15) immediately before the edge or bend (23) of the electric motor (25) and / or, the piston-cylinder unit (4) extends.
11. Hermetisch gekapselter Kältemittelverdichter (1) nach einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass in einer Blickrichtung entlang der Achse (27) der Kurbelwelle (26) des Elektromotors (25) gesehen, die Krümmung einer der flächenmäßig größeren Seitenwände (11) zumindest abschnittsweise der Krümmung des11. hermetically sealed refrigerant compressor (1) according to one of claims 5 to 10, characterized in that viewed in a line of sight along the axis (27) of the crankshaft (26) of the electric motor (25), the curvature of one of the larger area side walls (11 ) at least in sections, the curvature of the
Verdichtergehäuses (2) im Bereich der Anordnung des Druckschalldämpfers innerhalb des Verdichtergehäuses (2) entspricht . Compressor housing (2) in the region of the arrangement of the pressure muffler within the compressor housing (2) corresponds.
EP11724515.9A 2010-05-04 2011-05-04 Discharge silencer for a hermetically encapsulated refrigerant compressor Active EP2567093B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM290/2010U AT12789U1 (en) 2010-05-04 2010-05-04 PRESSURE SILENCER FOR A HERMETICALLY CAPACITATED REFRIGERANT COMPRESSOR
PCT/AT2011/000213 WO2011137474A2 (en) 2010-05-04 2011-05-04 Discharge silencer for a hermetically encapsulated refrigerant compressor

Publications (2)

Publication Number Publication Date
EP2567093A2 true EP2567093A2 (en) 2013-03-13
EP2567093B1 EP2567093B1 (en) 2015-03-04

Family

ID=44904133

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Application Number Title Priority Date Filing Date
EP11724515.9A Active EP2567093B1 (en) 2010-05-04 2011-05-04 Discharge silencer for a hermetically encapsulated refrigerant compressor

Country Status (5)

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US (1) US20130330214A1 (en)
EP (1) EP2567093B1 (en)
CN (1) CN102971533B (en)
AT (1) AT12789U1 (en)
WO (1) WO2011137474A2 (en)

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KR101854953B1 (en) * 2014-11-10 2018-05-04 엘지전자 주식회사 Reciprocating compressor
KR101891928B1 (en) * 2017-09-29 2018-08-24 엘지전자 주식회사 Muffler for compressor
CN216812061U (en) * 2021-10-25 2022-06-24 思科普有限责任公司 Discharge muffler of enclosed refrigerant compressor and enclosed refrigerant compressor

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Also Published As

Publication number Publication date
AT12789U1 (en) 2012-11-15
WO2011137474A2 (en) 2011-11-10
US20130330214A1 (en) 2013-12-12
CN102971533B (en) 2015-12-02
EP2567093B1 (en) 2015-03-04
CN102971533A (en) 2013-03-13
WO2011137474A3 (en) 2012-02-23

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