EP1038107A1 - Refrigerating agent compressor with improved valve - Google Patents

Refrigerating agent compressor with improved valve

Info

Publication number
EP1038107A1
EP1038107A1 EP98958725A EP98958725A EP1038107A1 EP 1038107 A1 EP1038107 A1 EP 1038107A1 EP 98958725 A EP98958725 A EP 98958725A EP 98958725 A EP98958725 A EP 98958725A EP 1038107 A1 EP1038107 A1 EP 1038107A1
Authority
EP
European Patent Office
Prior art keywords
valve
valve spring
recesses
spring
section
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
EP98958725A
Other languages
German (de)
French (fr)
Other versions
EP1038107B1 (en
Inventor
Walter Brabek
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
Verdichter Oe 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
Application filed by Verdichter Oe GmbH filed Critical Verdichter Oe GmbH
Priority to SI9830207T priority Critical patent/SI1038107T1/en
Publication of EP1038107A1 publication Critical patent/EP1038107A1/en
Application granted granted Critical
Publication of EP1038107B1 publication Critical patent/EP1038107B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/7891—Flap or reed

Definitions

  • the invention relates to a special design of a hermetic refrigerant compressor, in particular for use in connection with household refrigerators and / or freezers, namely that part of the compressor which comprises the refrigerant suction components within the compression cylinder.
  • the refrigerant suction check valve i.e. the valve which lets the refrigerant into the compression cylinder and at the same time prevents the same from flowing back out of the said cylinder.
  • a valve usually takes the form of a tongue valve made of high-strength and highly elastic steel, which is also called spring valve in technical jargon, so that the following description will generally refer to a spring valve or a valve spring.
  • a spring valve usually consists of a small and extremely thin special steel plate which has a curved cut in its central area which delimits the section which defines the actual valve spring, i.e. forms the movable part of the valve and releases and seals the suction hole in the valve plate.
  • Such a board is held in place by providing respective holes at its corners, in which corresponding screw bolts can be screwed in, which are used for clamping the internal compressor body, the valve head, the valve plate, the valve spring and possibly interposed seals so that the components mentioned are practically held together as a single body.
  • valve spring for the manufacture of which very expensive special alloys are currently used, but which are not specifically required for the manufacture of the entire circuit board.
  • the circuit board of the spring valve is practically completely eliminated and only the movable tongue, i.e. receive the actual spring, which spring can then be connected to the valve plate with one or more pins which are inserted into corresponding bores provided in the valve plate and at the same time fix the movable spring.
  • FIG. 1 shows a sectional view of some of the components connected to the compressor head and FIG. 1 shows a view of the components mounted on the compressor head according to the invention
  • FIG. 2 shows a plan view of the front side of the valve plate viewed from the cylinder
  • FIG 2 shows a plan view of the front of the valve plate provided with the valve spring according to this invention
  • FIG. 5 shows a sectional view of the valve plate according to FIG .4
  • Figure 6 is a plan view of only the valve spring according to Figure 4
  • Figure 7 is a plan view of the front of the valve plate provided with the valve spring according to this invention and partially covered by the seal.
  • valve spring 2 is replaced by a smaller valve spring 2 according to the invention, which differs from the conventional design in that it is limited in its scope and no longer relates to the extends essentially over the entire surface of the valve plate 3, but is fastened by the same bolts that hold the valve plate in place.
  • valve spring 2 consists of three different sections, namely a first section 5, with which the suction bore 12 can seal, a second section 6, which can be blocked against the valve plate in a special manner, which is described in more detail below, and a third section 7, which acts as an elastic joint, which in turn connects the two sections 5 and 6 to one another, as can be seen from FIG.
  • the second section 6 is provided with two projecting parts 6a and 6b, preferably opposite on the same axis 6c, the projecting parts 6a and 6b being inclined slightly laterally in relation to the plane of the other sections of the spring valve, as can be seen in FIG. 5 is.
  • two cutouts 3A and 3B are provided in the valve plate 3 on the side facing the cylinder 20, the inner edges 3c and 3d of which are at least partially sharp-angled.
  • Both the cutouts and the protruding parts 6a and 6b of the valve spring are designed, dimensioned and arranged in such a way that the valve spring 2 according to the invention can be attached to the associated valve plate 3.
  • the two protruding parts 6a and 6b are elastically bent so that they can be pushed into the above-mentioned recesses 3A and 3B and can sit there firmly and stably, in particular by jamming the protruding parts against the inner edges 3c and 3d, as shown in FIGS is shown schematically in particular in FIG.
  • the first section 5 of the valve spring is arranged in this stable jamming position exactly on the suction bore 12 so that it can close it tightly.
  • a valve spring construction is thus achieved which avoids the waste of expensive material which is usually required for the production of entire valve boards. This material is only intended for the parts of the spring valve which are necessary for closing the suction bore, for holding the spring valve and for the section 7 which acts as an elastic hinge joint and which connects the first section 5 to the second section 6 of the valve spring.
  • a seal 13 is preferably arranged, in particular as shown in FIG. 6, which has an opening 14 in its central section, which has both the first section 5 of the valve spring, which serves to seal the suction bore 12, as well as the third connecting section 7, which serves as an elastic hinge joint, but completely covers the two protruding parts 6a and 6b, this together with the jamming of the above mentioned protruding parts 6a and 6b specifically for greater stabilization of the entire valve spring in FIG their correct working position, ie close to the valve plate, contributes.

Abstract

The invention relates to a refrigerating agent compressor for electrical refrigerating appliances, especially for household refrigerators and deep freezers. Said compressor comprises an inner body, a piston which can move in a cylinder, a first compressor seal, a valve spring, a valve plate provided with a refrigerating agent suction bore and a valve block, the valve plate having two recesses provided on its side oriented towards the valve spring. Said compressor is designed so that two externally projecting parts of the spring are inclined and able to enter said recesses and become blocked inside said recesses, and so that a part of the remaining surface of the valve spring is mounted in a way enabling it to move and in a position closely adjacent to the surface of the valve plate oriented towards the interior of the cylinder, for blocking the suction bore provided in the valve plate. The valve spring only comprises the surface with which it is possible to block the suction bore provided in the valve plate, the two side surfaces which can be blocked in said recesses, as well as a surface held by a compressor seal, in a way to be closely adjacent to the surface of the valve plate which faces the cylinder.

Description

Kältemittelverdichter mit verbessertem VentilRefrigerant compressor with improved valve
Die Erfindung betrifft eine besondere Gestaltungsform eines insbesondere für die Anwendung in Verbindung mit Haushaltskühl- und/oder Gefriergeräten vorgesehenen hermetischen Kältemittelverdichters, und zwar den Teil des Verdichters, welcher die Kältemittelansaug-Bauteile innerhalb des VerdichtungsZylinders umfaßt .The invention relates to a special design of a hermetic refrigerant compressor, in particular for use in connection with household refrigerators and / or freezers, namely that part of the compressor which comprises the refrigerant suction components within the compression cylinder.
Es ist wohlbekannt, daß es sich bei den in Kühl- und Gefriergeräten verwendeten Kältemittelverdichtern um standardisierte Produkte handelt, wobei Verdichterhersteller sich unablässig und beharrlich darum bemühen, solche Erzeugnisse vom Standpunkt sowohl der allgemeinen Leistungsfähigkeit als auch der Kosten durch konstante Verbesserungen bis ins kleinste Detail immer mehr konkurrenzfähig werden zu lassen.It is well known that the refrigerant compressors used in refrigerators and freezers are standardized products, and compressor manufacturers are constantly and persistently trying to provide such products from the point of view of both general performance and cost through constant improvements down to the smallest detail to become more competitive.
Einer der kritischsten Bauteile, die in solchen Kältemittelverdichtern verwendeten werden, ist zweifellos das Kältemittelsaug- Rückschlagventil, d.h. das Ventil, welches das Kältemittel in den Verdichtungszylinder einläßt und den Rückfluß desselben aus dem genannten Zylinder zugleich verhindert . Üblicherweise nimmt ein solches Ventil die Form eines aus hochfestem und hochelastischem Stahl bestehenden Zungenventils an, das im Fach- jargon auch Federventil genannt wird, sodaß in der folgenden Beschreibung im allgemeinen von einem Federventil oder auch einer Ventilfeder die Rede sein wird.One of the most critical components used in such refrigerant compressors is undoubtedly the refrigerant suction check valve, i.e. the valve which lets the refrigerant into the compression cylinder and at the same time prevents the same from flowing back out of the said cylinder. Such a valve usually takes the form of a tongue valve made of high-strength and highly elastic steel, which is also called spring valve in technical jargon, so that the following description will generally refer to a spring valve or a valve spring.
Es ist allgemein bekannt, daß ein Federventil üblicherweise aus einer kleinen und äußerst dünnen Spezialstahlplatine besteht, die einen gebogenen Einschnitt in ihrem mittleren Bereich aufweist, welcher den Abschnitt abgrenzt, der die tatsächliche Ventilfeder, d.h. den beweglichen Teil des Ventils bildet und die Saugbohrung in der Ventilplatte freisetzt und abdichtet.It is generally known that a spring valve usually consists of a small and extremely thin special steel plate which has a curved cut in its central area which delimits the section which defines the actual valve spring, i.e. forms the movable part of the valve and releases and seals the suction hole in the valve plate.
Eine solche Platine ist dadurch in ihrer Lage festgehalten , daß j eweilige Durchbohrungen an ihren Ecken vorgesehen sind , in welche sich entsprechende Schraubenbolzen einschrauben lassen, welche zum Festklemmen des Verdichterinnenkörpers, des Ventilkopfes, der Ventilplatte, der Ventilfeder und eventuell dazwischengelegter Dichtungen so verwendet werden, daß die genannten Bauteile praktisch als ein einziger Körper zusammengehalten werden.Such a board is held in place by providing respective holes at its corners, in which corresponding screw bolts can be screwed in, which are used for clamping the internal compressor body, the valve head, the valve plate, the valve spring and possibly interposed seals so that the components mentioned are practically held together as a single body.
Dies ist in jedem Fall eine jedem Fachmann bekannte Technik, welche keine weiteren Erläuterungen benötigt.In any case, this is a technique known to any person skilled in the art and does not require any further explanation.
Das Problem, welches es zu lösen gilt, bezieht sich vielmehr auf die eigentliche Anwendung der Ventilfeder, zu deren Herstellung zur Zeit sehr teure Speziallegierungen verwendet werden, welche jedoch nicht zur Herstellung der ganzen Platine spezifisch ge- braucht werden. Nur der bewegliche Teil der Platine, welche aus einer kleinen Zunge oder Feder besteht, sowie sein als Scharnier wirkender Übergangsabschnitt stellen diese funktionsbedingten Anforderungen, welche nur unter Anwendung von normalerweise sehr teuren Hochleistungs-Speziallegierungen zweckmäßig erfüllt werden können.The problem that needs to be solved rather relates to the actual application of the valve spring, for the manufacture of which very expensive special alloys are currently used, but which are not specifically required for the manufacture of the entire circuit board. Only the movable part of the circuit board, which consists of a small tongue or spring, and its transition section, which acts as a hinge, make these functional requirements, which can only be expediently met using normally very expensive high-performance special alloys.
Es würde deshalb zweifellos von großem Vorteil sein, die Anwendung dieser Legierungen nur auf die bewegliche Feder und den dazu gehörenden Übergangsabschnitt zu beschränken und zugleich kostengünstigere Werkstoffe für den übrigen Teil der Platine einzusetzen, da dieser übrige Teil vom Leistungsprofil her deutlich weniger anspruchsvoll ist. Nach einer weiteren bekannten und an sich wirksamen Lösung wird die Platine des Federventils praktisch völlig beseitigt und von dieser nur die bewegliche Zunge, d.h. die eigentliche Feder erhalten, wobei diese Feder sich dann mit einem oder mehreren Stiften, welche in entsprechende, in der Ventilplatte vorgesehene Bohrungen eingesteckt werden und zugleich die bewegliche Feder fixieren, mit der Ventilplatte verbinden läßt.It would therefore undoubtedly be a great advantage to limit the use of these alloys only to the movable spring and the associated transition section and, at the same time, to use less expensive materials for the remaining part of the board, since this remaining part is significantly less demanding in terms of performance profile. According to a further known and effective solution, the circuit board of the spring valve is practically completely eliminated and only the movable tongue, i.e. receive the actual spring, which spring can then be connected to the valve plate with one or more pins which are inserted into corresponding bores provided in the valve plate and at the same time fix the movable spring.
Eine solche Lösung hat jedoch den Nachteil, daß sie einige zusätzliche Fertigungsabläufe, wie z.B. das Durchführen von Boh- rungen und das Einstecken der ensprechenden Stifte mit sich bringt. Darüber hinaus sind auch die nicht unerheblichen Kosten der genannten Stifte zu berücksichtigen.However, such a solution has the disadvantage that it requires some additional manufacturing processes, such as performing drilling and inserting the corresponding pins. In addition, the not inconsiderable costs of the pens mentioned must also be taken into account.
Es ist daher wünschenswert, und zugleich Aufgabe dieser Erfindung, einen Kältemittelverdichter anzugeben, welcher mit einem Federventil oder einer ähnlichen Einrichtung versehen ist, welche dieselbe Funktion der oben genannten Ventileinrichtung unter deutlicher Verringerung der Herstellkosten bei unverändert hoher Leistungs- und Funktionsfähigkeit sichert, und welcher ferner kostengünstig und montagefreundlich unter Verwendung von nach dem gegenwärtigen Stand der Technik üblichen Werkstoffen und Fertigungsverfahren ist. Die kennzeichnenden Eigenschaften der Erfindung sind in den beigefügten Patentansprüchen genauer angegeben.It is therefore desirable, and at the same time the object of this invention, to provide a refrigerant compressor which is provided with a spring valve or a similar device which ensures the same function of the above-mentioned valve device while significantly reducing the manufacturing costs while maintaining high performance and functionality, and which furthermore is inexpensive and easy to assemble using materials and manufacturing processes customary in the current state of the art. The characteristic features of the invention are specified in the appended claims.
Erfindungsgemäß wird diese Aufgabe durch die im folgenden als nichteinschränkendes Beispiel unter Bezugnahme auf die beiliegenden Zeichnungen näher erläuterten technischen Lösungen ge- löst. Dabei zeigen Fig.l eine Schnittansicht einiger mit dem Verdichterkopf verbundener Bauteile und Fig.la eine Ansicht der auf dem Verdichterkopf montierten Bauteile gemäß der Erfindung, Fig.2 eine Grundrißansicht der vom Zylinder her betrachteten Frontseite der Ventilplatte gemäß dieser Erfindung, Fig.3 eine Schnittansicht der entprechend der Schnittfläche A-A betrachteten Ventilplatte gemäß Fig.2, Fig.4 eine Grundrißansicht der vom Zylinder her betrachteten Frontseite der mit der Ventilfeder versehenen Ventilplatte gemäß dieser Erfindung, Fig.5 eine Schnittansicht der entprechend der Schnittfläche B-B betrach- teten Ventilplatte gemäß Fig.4, Fig.6 eine Grundrißansicht nur von der Ventilfeder gemäß Fig.4, und Fig. 7 eine Grundrißansicht der Frontseite der mit der Ventilfeder gemäß dieser Erfindung versehenen und teilweise durch die Dichtung gedeckten Ventilplatte.According to the invention, this object is achieved by the technical solutions explained in more detail below as a non-restrictive example with reference to the accompanying drawings. 1 shows a sectional view of some of the components connected to the compressor head and FIG. 1 shows a view of the components mounted on the compressor head according to the invention, FIG. 2 shows a plan view of the front side of the valve plate viewed from the cylinder, FIG 2 shows a plan view of the front of the valve plate provided with the valve spring according to this invention, FIG. 5 shows a sectional view of the valve plate according to FIG .4, Figure 6 is a plan view of only the valve spring according to Figure 4, and Figure 7 is a plan view of the front of the valve plate provided with the valve spring according to this invention and partially covered by the seal.
Der dieser Erfindung zugrundeliegende Gedanke wird im folgenden näher erläutert: Unter Bezugnahme auf die Figuren und insbe- sondere auf Fig. 2 bis 7, läßt es sich feststellen, daß die übliche Ventilfeder durch eine kleinere Ventilfeder 2 gemäß der Erfindung ersetzt ist, welche sich von der üblichen Ausbildung dadurch unterscheidet, daß sie in ihrem Umfang eingeschränkt ist und sich nicht mehr auf die im wesentlichen ganze Oberfläche der Ventilplatte 3 erstreckt, wobei sie aber von denselben Schraubenbolzen befestigt wird, welche die Ventilplatte in ihrem Sitz festhalten. Genauer gesagt, besteht die erfindungsmäßige Ventilfeder 2 aus drei verschiedenen Abschnitten, und zwar einem ersten Abschnitt 5, mit dem die Saugbohrung 12 abdichten läßt, einem zweiten Abschnitt 6, der gegen die Ventilplatte in einer besonderen, im folgenden näher beschriebenen Weise blockierbar ist, und einem dritten Abschnitt 7, welcher als elastisches Gelenk wirkt;, welches wiederum die zwei Abschnitte 5 und 6 mit- einander verbindet, wie dies aus Fig.6 zu erkennen ist.The idea on which this invention is based is explained in more detail below: With reference to the figures and in particular 2 to 7, it can be stated that the conventional valve spring is replaced by a smaller valve spring 2 according to the invention, which differs from the conventional design in that it is limited in its scope and no longer relates to the extends essentially over the entire surface of the valve plate 3, but is fastened by the same bolts that hold the valve plate in place. More precisely, the valve spring 2 according to the invention consists of three different sections, namely a first section 5, with which the suction bore 12 can seal, a second section 6, which can be blocked against the valve plate in a special manner, which is described in more detail below, and a third section 7, which acts as an elastic joint, which in turn connects the two sections 5 and 6 to one another, as can be seen from FIG.
Der zweite Abschnitt 6 ist mit zwei herausragenden, vorzugsweise auf derselben Achse 6c gegenüberliegenden Teilen 6a und 6b versehen, wobei die herausragenden Teile 6a und 6b leicht seitlich in ihrem Verhältnis zur Ebene der anderen Abschnitte des Federventils geneigt sind, wie dies in Fig. 5 ersichtlich ist.The second section 6 is provided with two projecting parts 6a and 6b, preferably opposite on the same axis 6c, the projecting parts 6a and 6b being inclined slightly laterally in relation to the plane of the other sections of the spring valve, as can be seen in FIG. 5 is.
Wie dies insbesondere aus Fig.2 und Fig.3 zu entnehmen ist, sind zwei Aussparungen 3A und 3B in der Ventilplatte 3 auf der dem Zylinder 20 zugewandten Seite vorgesehen, deren Innenkanten 3c und 3d mindestens teilweise scharfwinklig sind. Dabei sind sowohl die Aussparungen als auch die herausragenden Teile 6a und 6b der Ventilfeder so gestaltet, bemessen und angeordnet, daß die erfindungsgemäße Ventilfeder 2 auf der zugehörigen Ventil- platte 3 angebracht werden kann. Dabei werden die beiden herausragenden Teile 6a und 6b elastisch gebogen, damit diese in die vorgenannten Aussparungen 3A und 3B eingeschoben werden und dort insbesondere durch Verklemmen der herausragenden Teile gegen die Innenkanten 3c und 3d fest und stabil sitzen können, wie dies in Fig.4 und insbesondere in Fig.5 schematisch dargestellt ist. Der erste Abschnitt 5 der Ventilfeder ist in dieser stabilen Verklemmungslage genau auf der Saugbohrung 12 so angeordnet, daß er diese dicht schliessen kann.As can be seen in particular from FIGS. 2 and 3, two cutouts 3A and 3B are provided in the valve plate 3 on the side facing the cylinder 20, the inner edges 3c and 3d of which are at least partially sharp-angled. Both the cutouts and the protruding parts 6a and 6b of the valve spring are designed, dimensioned and arranged in such a way that the valve spring 2 according to the invention can be attached to the associated valve plate 3. The two protruding parts 6a and 6b are elastically bent so that they can be pushed into the above-mentioned recesses 3A and 3B and can sit there firmly and stably, in particular by jamming the protruding parts against the inner edges 3c and 3d, as shown in FIGS is shown schematically in particular in FIG. The first section 5 of the valve spring is arranged in this stable jamming position exactly on the suction bore 12 so that it can close it tightly.
Damit wird eine Ventilfederkonstruktion erzielt, welche die Verschwendung von teurem Material, welches üblicherweise zur Herstellung von ganzen Ventilplatinen erforderlich ist vermeidet. Dieses Material ist nur für die Teile des Federventils vorgesehen, welche zum Schließen der Saugbohrung, zum Festhalten des Federventils und für den als elastisches Scharniergelenk wirkenden Abschnitt 7, welcher den ersten Abschnitt 5 mit dem zweiten Abschnitt 6 der Ventilfeder verbindet, notwendig sind.A valve spring construction is thus achieved which avoids the waste of expensive material which is usually required for the production of entire valve boards. This material is only intended for the parts of the spring valve which are necessary for closing the suction bore, for holding the spring valve and for the section 7 which acts as an elastic hinge joint and which connects the first section 5 to the second section 6 of the valve spring.
Zum stabileren und zuverläßigeren Festklemmen dei genannten Ventilfeder wird vorzugsweise eine Dichtung 13 insbesondere gemäß der Darstellung in Fig. 6 angeordnet, die in ihrem mittleren Abschnitt eine Öffnung 14 aufweist, welche sowohl den ersten Abschnitt 5 der Ventilfeder, der zum Abdichten der Saugbohrung 12 dient, als auch den dritten, als elastisches Schar- niergelenk dienenden Verbindungsabschnitt 7 unbedeckt läßt, die beiden herausragenden Teile 6a und 6b jedoch völlig bedeckt, wobei dies zusammen mit dem oben beschriebenen Verklemmen der genannten hearusragenden Teile 6a und 6b konkret zur höheren Stabilisierung der ganzen Ventilfeder in ihrer korrekten Ar- beitslage, d.h. eng an der Ventilplatte anliegend, beiträgt.For more stable and reliable clamping of the valve spring mentioned, a seal 13 is preferably arranged, in particular as shown in FIG. 6, which has an opening 14 in its central section, which has both the first section 5 of the valve spring, which serves to seal the suction bore 12, as well as the third connecting section 7, which serves as an elastic hinge joint, but completely covers the two protruding parts 6a and 6b, this together with the jamming of the above mentioned protruding parts 6a and 6b specifically for greater stabilization of the entire valve spring in FIG their correct working position, ie close to the valve plate, contributes.
Es ist wohl zu verstehen, daß die Beschreibung und die obigen Darlegungen nur als nichteinschränkendes Beispiel zur Erläuterung der Erfindung gegeben worden sind, und daß zahlreiche Varianten und Modifikationen herbeigebracht werden können, ohne dadurch aus dem Schutzbereich dieser Erfindung herauszutreten. It is to be understood that the description and the foregoing have been presented only as a non-limiting example to illustrate the invention, and that numerous variations and modifications can be made without departing from the scope of this invention.

Claims

Patentansprüche : Claims:
1. Elektro-Kältemittelverdichter , insbesondere für Haushaltskühl- und Gefriergeräte, mit einem Außengehäuse, einem Innenkörper, einem in einem Zylinder (20) beweglichen Kolben, einer ersten Dichtung (13), einer Ventilfeder (2), einer mit einer Kältemittelsaugbohrung (12) versehenen Ventilplatte (3) und einem Ventilkopf, dadurch gekennzeichnet, daß die Ventilplatte mit zwei Aussparungen (3A, 3B) auf ihrer nach der Ventil- feder gerichteten Seite versehen ist, daß die Ventilfeder so gestaltet ist, daß zwei seitlich herausragende Teile (6a, 6b) derselben Feder geneigt und in die genannten Aussparungen einsteckbar und dort so verklemmbar sind, daß ein Teil der übrigen Oberfläche der Ventilfeder in einer eng an der nach dem Zylinderinnenraum gerichteten Oberfläche der Ventilplatte anliegenden Lage beweglich angeordnet ist.1. Electric refrigerant compressor, in particular for household refrigerators and freezers, with an outer housing, an inner body, a piston movable in a cylinder (20), a first seal (13), a valve spring (2), one with a refrigerant suction bore (12) provided valve plate (3) and a valve head, characterized in that the valve plate is provided with two recesses (3A, 3B) on its side facing the valve spring, that the valve spring is designed such that two laterally projecting parts (6a, 6b) the same spring is inclined and can be inserted into said recesses and clamped there in such a way that part of the remaining surface of the valve spring is movably arranged in a position closely adjacent to the surface of the valve plate facing the cylinder interior.
2. Elektro-Kältemittelverdichter nach Anspruch 1, dadurch gekennzeichnet, daß die zwei herausragenden Teile und Aus- sparungen so angeordnet sind, daß bei ihrer gegenseitigen Verklemmung die Ventilfeder sich gegen die genannte Saugbohrung (12) stellt.2. Electric refrigerant compressor according to claim 1, characterized in that the two protruding parts and recesses are arranged so that when they jam, the valve spring stands against said suction bore (12).
3. Elektro-Kältemittelverdichter nach irgendeinem der vorher- gehenden Ansprüche, dadurch gekennzeichnet, daß die Ventilfeder im wesentlichen aus drei unterschiedlichen Abschnitten besteht, von welchen der erste Abschnitt (5) die Abdichtfläche zum Schliessen der Saugbohrung in der Ventilplatte ist, der zweite Abschnitt (6) aus den zwei herausragenden, sich in den genannten Aussparungen verklemmbaren Teilen (6a, 6b) besteht, und der dritte Abschnitt (7) der Ventilfeder zwischen dem ersten und und dem zweiten Abschnitt liegt und zum Verbinden dieser zwei Abschnitte miteinander dient, wobei kein weiterer Abschnitt im wesentlichen vorgesehen ist.3. Electric refrigerant compressor according to any one of the preceding claims, characterized in that the valve spring consists essentially of three different sections, of which the first section (5) is the sealing surface for closing the suction bore in the valve plate, the second section ( 6) consists of the two protruding parts (6a, 6b) which can be clamped in the said recesses, and the third section (7) of the valve spring lies between the first and the second section and serves to connect these two sections to one another, none another section is essentially provided.
4. Elektro-Kältemittelverdichter nach Anspruch 3, dadurch gekennzeichnet, daß die erste Dichtung (13) zwischen der genannten Ventilfeder und dem genannten Ventilkopf gelegen ist, wobei sie im mittleren Abschnitt mit einer Öffnung (14) versehen ist, die sowohl den genannten ersten Abschnitt (5) als auch mindestens teilweise den genannten dritten Abschnitt (7) der Ventilfeder unbedeckt läßt .4. Electric refrigerant compressor according to claim 3, characterized in that the first seal (13) between said Valve spring and said valve head is located, wherein it is provided in the central section with an opening (14) which leaves both said first section (5) and at least partially said third section (7) of the valve spring uncovered.
5. Elektro-Kältemittelverdichter nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die genannte Ventilfeder symmetrisch ist und die genannten zwei Aussparungen (3A, 3B) im wesentlichen symmetrisch im Verhältnis zu der Symmetrieachse der genannten Ventilfeder liegen.5. Electric refrigerant compressor according to any one of the preceding claims, characterized in that said valve spring is symmetrical and said two recesses (3A, 3B) are substantially symmetrical in relation to the axis of symmetry of said valve spring.
6. Elektro-Kältemittelverdichter nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die genannten zwei Aussparungen (3A, 3B) mindestens mit je einer scharfwinkligen Innenkante (3c, 3d) versehen sind, und daß die Außenkanten der genannten geneigten herausragenden Teile (6a, 6b) gegen eine entsprechende Innenkante verklemmbar sind. 6. Electric refrigerant compressor according to any one of the preceding claims, characterized in that said two recesses (3A, 3B) are each provided with at least one sharp-angled inner edge (3c, 3d), and that the outer edges of said inclined protruding parts (6a, 6b) can be clamped against a corresponding inner edge.
EP98958725A 1997-12-11 1998-12-10 Refrigerating agent compressor with improved valve Expired - Lifetime EP1038107B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9830207T SI1038107T1 (en) 1997-12-11 1998-12-10 Refrigerating agent compressor with improved valve

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT77397 1997-12-11
AT77397U 1997-12-11
PCT/AT1998/000303 WO1999030037A1 (en) 1997-12-11 1998-12-10 Refrigerating agent compressor with improved valve

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EP1038107A1 true EP1038107A1 (en) 2000-09-27
EP1038107B1 EP1038107B1 (en) 2002-04-10

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US (1) US6293774B1 (en)
EP (1) EP1038107B1 (en)
JP (1) JP2001526359A (en)
CN (1) CN1100946C (en)
BR (1) BR9813552A (en)
DE (1) DE59803788D1 (en)
DK (1) DK1038107T3 (en)
ES (1) ES2174515T3 (en)
WO (1) WO1999030037A1 (en)

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Also Published As

Publication number Publication date
CN1281536A (en) 2001-01-24
ES2174515T3 (en) 2002-11-01
DE59803788D1 (en) 2002-05-16
CN1100946C (en) 2003-02-05
US6293774B1 (en) 2001-09-25
EP1038107B1 (en) 2002-04-10
BR9813552A (en) 2000-10-17
DK1038107T3 (en) 2002-08-19
JP2001526359A (en) 2001-12-18
WO1999030037A1 (en) 1999-06-17

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