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EP2986821A1 - Vane-type rotary vacuum pump - Google Patents

Vane-type rotary vacuum pump

Info

Publication number
EP2986821A1
EP2986821A1 EP13718174.9A EP13718174A EP2986821A1 EP 2986821 A1 EP2986821 A1 EP 2986821A1 EP 13718174 A EP13718174 A EP 13718174A EP 2986821 A1 EP2986821 A1 EP 2986821A1
Authority
EP
European Patent Office
Prior art keywords
vacuum pump
rotary vane
vane vacuum
drive motor
pump
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
EP13718174.9A
Other languages
German (de)
French (fr)
Other versions
EP2986821B1 (en
Inventor
Christian Schaller
Didier MÜLLER
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.)
Ateliers Busch SA
Original Assignee
Ateliers Busch SA
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 Ateliers Busch SA filed Critical Ateliers Busch SA
Priority to PL13718174T priority Critical patent/PL2986821T3/en
Publication of EP2986821A1 publication Critical patent/EP2986821A1/en
Application granted granted Critical
Publication of EP2986821B1 publication Critical patent/EP2986821B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings

Definitions

  • the invention relates to a rotary vane vacuum pump which is particularly suitable for use in industry in which it is necessary to observe certain hygiene rules both during operation of the pump and with regard to the cleaning services.
  • Rotary vane vacuum pumps have been around for a long time.
  • the rotor is provided with several blades (called “pallets”) which slide radially and which ensure the transfer of the pumped air.
  • the major object of the invention is therefore to propose a rotary vane vacuum pump which does not have the abovementioned disadvantages and which is particularly suitable for use in environments subject to strict hygiene standards.
  • a rotary vane vacuum pump which has the particularity that all the surfaces of the pump visible from the top are arranged in such a way that they are free of elements capable of holding liquids or solids.
  • this pump may, at least in one part, be provided with protective means without surfaces or recesses capable of retaining liquids or solids.
  • Such a pump has the further advantage of being easy to clean. It is therefore very suitable for uses in industries in which it is necessary to comply with certain hygiene rules.
  • FIG. 1 a rotary vane vacuum pump according to the prior art to the invention
  • FIGS. 3, 4 and 5 are front, back and front perspective views after clockwise pivoting of a pump according to a second embodiment of the invention
  • FIGS. 6, 7 and 8 are views respectively corresponding to those of FIGS. 3, 4 and 5, of the pump according to the second embodiment, equipped with an oil mist separator. Detailed exposition of the invention
  • the rotary vane vacuum pump according to the invention is characterized in that all its visible surfaces from the top are arranged so that they are devoid of elements capable of retaining liquids or solids. Such surfaces, which are necessarily external, may be formed by cooling fins and they are located on the upper half of the vacuum pump, since the surfaces on the lower half of the vacuum pump can not because of gravity, hold back a liquid or a solid.
  • the adjectives "upper” and “lower” used in this text (and this both in the description and in the claims) refer to the normal position of the pump when it is in functioning or ready to operate.
  • the pump may also, at least in one part, be provided with means for protecting the upper surface.
  • These means of protection must also be devoid of recesses, for example grooves, located on the upper half of the vacuum pump and inside which liquids or solids could stagnate.
  • FIG. 1 shows a rotary vane vacuum pump according to the prior art.
  • This pump comprises in particular a drive motor, in this case an asynchronous motor which is cooled in air.
  • This motor is coupled to a pumping chamber 2, in order to drive the rotor of the latter in rotation, so that the pump can perform its pumping function.
  • An intermediate cylinder V2 connects the drive motor to the pump chamber 2 and normally contains the connection elements between the drive motor and the pump chamber 2.
  • This pumping chamber 2 is known per se, it generally comprises a rotor which is housed in a cylindrical bore and which carries pallets.
  • the pumping chamber 2 can be supplied with oil, that is to say that an oil circulation system is then provided to lubricate, seal and allow the exchange of heat.
  • This oil is separated from the pumped gases in an oil mist separator (not shown in the figure), so that the air leaving the outlet 3 can be removed from the oil that it contains before to be pushed back into the atmosphere.
  • the pumping chamber 2 is also connected to a heat exchanger V1 with an integrated fan (not shown) which serves to cool the pumping chamber 2 which heats up during operation of the pump.
  • the drive motor 1 and the pumping chamber 2 are preferably connected in a removable manner, which makes it possible to replace one or the other in case of failure.
  • the pumping chamber 2 and the drive motor 1 have on their periphery cooling fins 5. These fins are the main characteristics of this pump. according to the prior art can not be suitable for use in a field requiring compliance with certain hygiene rules and ease of cleaning on site, as as explained above the fins can retain liquids or solids.
  • the upper surface of a portion of the pump (including the portion of the pumping chamber 2) comprises only the smooth surfaces. These surfaces therefore do not include elements likely to retain liquids or solids so as to allow a natural flow of any liquid or natural slip of any solid that could fall on the pump.
  • Figure 2 shows at the same time the other possibility to achieve the distinctive feature of the present invention, so the protective means 6 which are similar to a hood, that is to say they have substantially the shape of a half-cylinder covering in this case the upper part of the drive motor 1.
  • the protection means 6 would be positioned in another part of the pump, e.g. ex. on the pumping chamber 2.
  • the half-cylinder 6 covers only the upper fins 5 of the drive motor, the lower fins 16 then appearing in the lower part of the drive motor 1.
  • the half-cylinder 6 is removable, which has the advantage that it is easily possible to access the drive motor 1 in the case of control and thorough cleaning.
  • Examples of upper surfaces are those designated in FIG. 2 by reference numerals 8, 9, 10 and 11 for the pump chamber 2 and reference numerals 12 and 15 for the drive motor 1 .
  • the inclination of the surfaces concerned is preferably at least 5 degrees relative to the ground, when the supports 13 and 14 rest on the ground.
  • the oil mist separator comprises a common support block to the filter and the heat exchanger for the oil which makes it compact, accessible and easily cleaned.
  • the rotary vane vacuum pump comprises a pumping chamber 2 which can be like that of Figures 1 and 2 and which is connected to a drive motor 17.
  • the latter has the particularity to comprise a double jacket having an outer portion formed of a cylinder 18, visible in Figure 3, all or almost all of which is smooth on the outside.
  • the inner part of this jacket which is in fact the motor housing not visible in FIG. 3, contains, in known manner, the usual components of a rotary vane vacuum pump motor, which may be an asynchronous motor.
  • the outer surface of the cylinder 18 is smooth, unlike the first embodiment where the outer surface (see Figure 2) is generally provided with fins 16 cooling.
  • the cylinder 18 is spaced from the casing (smooth or not) so as to form a space in which a cooling fluid such as a liquid, in particular water, can circulate, entering and leaving through the orifices 19 and 20 .
  • a cooling fluid such as a liquid, in particular water
  • the advantage of cooling with water is that it allows the extraction of the heat generated by the drive motor 17, without having recourse to the fins 16 (of FIG. 2), the surface of which makes it possible to exchange of heat with the air.
  • the cylinder 18 is blind, that is to say closed at its free end, which facilitates the cleaning of the pump.
  • the cylinder 18 is not removable because it is attached to the casing of the drive motor 17.
  • the cylinder 18 is also removable.
  • this separator comprises a block -support common to the filter and the heat exchanger for the oil 25, which makes it compact, accessible and easily cleaned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

The present disclosure relates to a vane-type rotary vacuum pump comprising a drive motor (1, 17) interacting with a vane-pump vacuum chamber (2), in which pump all the pump surfaces that are visible from the top are arranged in such a way that they have no elements likely to retain liquids or solids. The drive motor (1) may in particular be an air-cooled asynchronous motor or a water-cooled asynchronous motor with a case that, with the cylinder (18), forms a space in which a cooling fluid can circulate.

Description

Pompe à vide rotative à palettes  Rotary vane vacuum pump
Domaine technique de l'invention Technical field of the invention
L'invention concerne une pompe à vide rotative à palettes convenant particulièrement à des utilisations dans l'industrie dans laquelle il est nécessaire de respecter certaines règles d'hygiène tant lors du fonctionnement de la pompe qu'en ce qui concerne les services de nettoyage. The invention relates to a rotary vane vacuum pump which is particularly suitable for use in industry in which it is necessary to observe certain hygiene rules both during operation of the pump and with regard to the cleaning services.
Arrière-plan de l'invention Background of the invention
Les pompes à vide rotatives à palettes existent depuis longtemps. Dans de telles pompes, le rotor est muni de plusieurs lames (dénommées « palettes ») qui coulissent radialement et qui assurent le transfert de l'air pompé. Rotary vane vacuum pumps have been around for a long time. In such pumps, the rotor is provided with several blades (called "pallets") which slide radially and which ensure the transfer of the pumped air.
Dans la demande de brevet européen publiée sous le numéro EP 0 166 807 est décrit un exemple d'une telle pompe. Comme on peut le voir notamment sur la figure 1 de ce document, une pompe à palettes « classique » est pourvue à de nombreux endroits sur sa surface extérieure d'ailettes, qui peuvent former des zones de rétention de liquides ou de solides ou empêcher l'écoulement naturel. Ceci rend ce type de pompe peu adapté voire complètement inadapté à un certain nombre d'applications. In the European patent application published under the number EP 0 166 807 is described an example of such a pump. As can be seen in particular in Figure 1 of this document, a "conventional" vane pump is provided in many places on its outer surface with fins, which can form liquid or solid retention zones or prevent natural flow. This makes this type of pump unsuitable or completely unsuited to a number of applications.
En effet, des liquides ou solides peuvent se déposer et stagner dans lesdites zones de rétention sur la surface de la pompe et donner ainsi lieu à des développements d'organismes pathogènes (champignons, bactéries, etc.) ce qui induit des risques de contamination. Indeed, liquids or solids can settle and stagnate in said retention zones on the surface of the pump and thus lead to developments of pathogenic organisms (fungi, bacteria, etc.) which induces risks of contamination.
Exposé sommaire de l'invention Summary of the invention
Le but majeur de l'invention est donc de proposer une pompe à vide rotative à palettes qui ne présente pas les inconvénients susmentionnés et qui est notamment apte à être utilisée dans les environnements soumis à des normes strictes d'hygiène. The major object of the invention is therefore to propose a rotary vane vacuum pump which does not have the abovementioned disadvantages and which is particularly suitable for use in environments subject to strict hygiene standards.
Ce but est atteint au moyen d'une pompe à vide rotative à palettes qui a comme particularité que toutes les surfaces de la pompe visibles depuis le haut sont agencées de manière à ce qu'elles soient dépourvues d'éléments susceptibles de retenir des liquides ou des solides. En particulier, cette pompe peut, au moins sur une partie, être munie de moyens de protection dépourvus de surfaces ou creux susceptibles de retenir des liquides ou des solides. This object is achieved by means of a rotary vane vacuum pump which has the particularity that all the surfaces of the pump visible from the top are arranged in such a way that they are free of elements capable of holding liquids or solids. In particular, this pump may, at least in one part, be provided with protective means without surfaces or recesses capable of retaining liquids or solids.
Une telle pompe a en outre l'avantage d'être facile à nettoyer. Elle convient ainsi tout à fait à des utilisations dans des industries dans lesquelles il est nécessaire de respecter certaines règles d'hygiène. Such a pump has the further advantage of being easy to clean. It is therefore very suitable for uses in industries in which it is necessary to comply with certain hygiene rules.
Brève description des dessins Brief description of the drawings
D'autres caractéristiques et avantages de l'invention vont maintenant être décrits en détail dans l'exposé suivant qui est donné en référence aux figures annexées, lesquelles représentent schématiquement : Other features and advantages of the invention will now be described in detail in the following description which is given with reference to the appended figures, which schematically represent:
- figure 1 : une pompe à vide rotative à palettes selon l'art antérieur à l'invention ; - Figure 1: a rotary vane vacuum pump according to the prior art to the invention;
- figure 2 : la pompe selon la figure 1 , rendue conforme à un premier mode de réalisation de l'invention ; - Figure 2: the pump according to Figure 1, made consistent with a first embodiment of the invention;
- figures 3, 4 et 5 : des vues en perspective de face, de dos et de face après pivotement dans le sens des aiguilles d'une montre, d'une pompe selon un deuxième mode de réalisation de l'invention ; FIGS. 3, 4 and 5 are front, back and front perspective views after clockwise pivoting of a pump according to a second embodiment of the invention;
- figures 6, 7 et 8 : des vues, correspondant respectivement à celles des figures 3, 4 et 5, de la pompe selon le deuxième mode de réalisation, équipée d'un séparateur de brouillard d'huile. Exposé détaillé de l'invention FIGS. 6, 7 and 8 are views respectively corresponding to those of FIGS. 3, 4 and 5, of the pump according to the second embodiment, equipped with an oil mist separator. Detailed exposition of the invention
Comme déjà mentionné, la pompe à vide rotative à palettes selon l'invention est caractérisée en ce que toutes ses surfaces visibles depuis le haut sont agencées de manière à ce qu'elles soient dépourvues d'éléments susceptibles de retenir des liquides ou des solides. De telles surfaces, qui sont nécessairement extérieures, peuvent être formées par des ailettes de refroidissement et elles sont situées sur la moitié supérieure de la pompe à vide, étant donné que les surfaces situées sur la moitié inférieure de la pompe à vide ne peuvent, en raison de la gravité, retenir un liquide ou un solide. A cet endroit, il semble important de préciser que les adjectifs « supérieur » et « inférieur » utilisés dans le présent texte (et ceci tant dans la description que dans les revendications) se réfèrent à la position normale de la pompe lorsqu'elle est en fonctionnement ou prête à fonctionner. As already mentioned, the rotary vane vacuum pump according to the invention is characterized in that all its visible surfaces from the top are arranged so that they are devoid of elements capable of retaining liquids or solids. Such surfaces, which are necessarily external, may be formed by cooling fins and they are located on the upper half of the vacuum pump, since the surfaces on the lower half of the vacuum pump can not because of gravity, hold back a liquid or a solid. At this point, it seems important to clarify that the adjectives "upper" and "lower" used in this text (and this both in the description and in the claims) refer to the normal position of the pump when it is in functioning or ready to operate.
Pour réaliser les surfaces supérieures dépourvues d'éléments susceptibles de retenir des liquides ou des solides, il est notamment possible de façonner la partie supérieure des surfaces d'une manière lisse. Ceci peut se faire lors de la production des parties constituantes de la pompe, donc p. ex. lors de l'usinage des parois extérieures de la chambre de pompage. In order to make the upper surfaces free from elements capable of holding liquids or solids, it is in particular possible to shape the upper part of the surfaces in a smooth manner. This can be done during the production of the constituent parts of the pump, so p. ex. when machining the outer walls of the pumping chamber.
Alternativement, la pompe peut aussi, au moins sur une partie, être munie de moyens de protection de la surface supérieure. Ces moyens de protection doivent également être dépourvus de creux, par exemple des rainures, situés sur la moitié supérieure de la pompe à vide et à l'intérieur desquels des liquides ou des solides pourraient stagner. Alternatively, the pump may also, at least in one part, be provided with means for protecting the upper surface. These means of protection must also be devoid of recesses, for example grooves, located on the upper half of the vacuum pump and inside which liquids or solids could stagnate.
Premier mode de réalisation First embodiment
Pour prendre connaissance d'un premier mode de réalisation de l'invention, on peut commencer par se reporter à la figure 1 qui représente une pompe à vide rotative à palettes selon l'art antérieur. Cette pompe comporte notamment un moteur d'entraînement, en l'occurence un moteur asynchrone qui est refroidi à l'air. Bien entendu, il serait possible d'utiliser un autre type de moteur, y compris un moteur refroidi à l'eau, suivant le modèle. Ce moteur est couplé à une chambre de pompage 2, en vue d'entraîner le rotor de cette dernière en rotation, afin que la pompe puisse remplir sa fonction de pompage. Un cylindre intermédiaire V2 connecte le moteur d'entraînement à la chambre de pompage 2 et il contient normalement les éléments de connexion entre le moteur d'entraînement et la chambre de pompage 2. To acquaint with a first embodiment of the invention, reference may first be made to FIG. 1, which shows a rotary vane vacuum pump according to the prior art. This pump comprises in particular a drive motor, in this case an asynchronous motor which is cooled in air. Of course, it would be possible to use another type of engine, including a water-cooled engine, depending on the model. This motor is coupled to a pumping chamber 2, in order to drive the rotor of the latter in rotation, so that the pump can perform its pumping function. An intermediate cylinder V2 connects the drive motor to the pump chamber 2 and normally contains the connection elements between the drive motor and the pump chamber 2.
Cette chambre de pompage 2 est connue en soi, elle comporte généralement un rotor qui est logé dans un alésage cylindrique et qui porte des palettes. This pumping chamber 2 is known per se, it generally comprises a rotor which is housed in a cylindrical bore and which carries pallets.
La chambre de pompage 2 peut être alimentée en huile, c'est-à-dire qu'il est alors prévu un système de circulation d'huile pour lubrifier, assurer l'étanchéité et permettre l'échange de chaleur. The pumping chamber 2 can be supplied with oil, that is to say that an oil circulation system is then provided to lubricate, seal and allow the exchange of heat.
Cette huile est séparée des gaz pompés dans un séparateur de brouillard d'huile (non représenté sur la figure), de manière à ce que l'air sortant par la sortie 3 puisse être débarrassé de l'huile qu'il contient avant d'être refoulé dans l'atmosphère. This oil is separated from the pumped gases in an oil mist separator (not shown in the figure), so that the air leaving the outlet 3 can be removed from the oil that it contains before to be pushed back into the atmosphere.
La chambre de pompage 2 est également connectée à un échan- geur de chaleur V1 avec un ventilateur intégré (non représenté) qui sert à refroidir la chambre de pompage 2 qui se réchauffe pendant le fonctionnement de la pompe. The pumping chamber 2 is also connected to a heat exchanger V1 with an integrated fan (not shown) which serves to cool the pumping chamber 2 which heats up during operation of the pump.
Le moteur d'entraînement 1 et la chambre de pompage 2 sont de préférence reliés de manière amovible, ce qui permet de remplacer l'un ou l'autre en cas de panne. The drive motor 1 and the pumping chamber 2 are preferably connected in a removable manner, which makes it possible to replace one or the other in case of failure.
Comme on le voit clairement sur la figure 1 , la chambre de pompage 2 et le moteur d'entraînement 1 comportent sur leurs pourtours des ailettes de refroidissement 5. Ce sont principalement ces ailettes qui font que cette pompe selon l'art antérieur ne peut convenir à une utilisation dans un domaine requérant le respect de certaines règles d'hygiène et une facilité de nettoyage sur place, car comme cela a été expliqué précédemment les ailettes peuvent retenir des liquides ou des solides. As can be seen clearly in FIG. 1, the pumping chamber 2 and the drive motor 1 have on their periphery cooling fins 5. These fins are the main characteristics of this pump. according to the prior art can not be suitable for use in a field requiring compliance with certain hygiene rules and ease of cleaning on site, as as explained above the fins can retain liquids or solids.
C'est pourquoi, selon l'invention, dont on peut voir le premier mode de réalisation en se référant à la figure 2, il a été prévu que toutes les surfaces supérieures de la pompe, donc toutes les surfaces visibles depuis le haut, sont agencées de manière à ce qu'elles soient dépourvues d'éléments susceptibles de retenir des liquides ou des solides. Comme on peut s'apercevoir en analysant la figure 2, il est possible d'obtenir de telles surfaces lisses soit en les formant de manière à ce qu'elles ne comportent pas d'éléments qui sont susceptibles de retenir des liquides ou des solides, soit en prévoyant des moyens de protection, dépourvus eux-mêmes de surfaces ou creux susceptibles de retenir des liquides ou des solides. Therefore, according to the invention, which can be seen the first embodiment with reference to Figure 2, it has been expected that all the upper surfaces of the pump, so all visible from the top, are arranged so that they are free of elements capable of holding liquids or solids. As can be seen by analyzing FIG. 2, it is possible to obtain such smooth surfaces either by forming them so that they do not have elements that are capable of retaining liquids or solids. or by providing protection means, themselves free surfaces or troughs likely to retain liquids or solids.
Sur la figure 2, on voit que la surface supérieure d'une partie de la pompe (notamment la partie de la chambre de pompage 2) comprend uniquement les surfaces lisses. Ces surfaces ne comprennent donc pas d'éléments susceptibles de retenir des liquides ou des solides de manière à permettre un écoulement naturel de tout liquide ou glissement naturel de tout solide qui pourraient tomber sur la pompe. Aussi, la figure 2 montre en même temps l'autre possibilité pour réaliser la caractéristique distinctive de la présente invention, donc les moyens de protection 6 qui sont assimilables à un capot, c'est-à-dire qu'ils présentent sensiblement la forme d'un demi-cylindre recouvrant dans ce cas la partie supérieure du moteur d'entraînement 1 . Bien entendu, il serait également possible de réaliser une pompe dans l'esprit de la présente invention dans laquelle les moyens de protection 6 seraient positionnés dans une autre partie de la pompe, p. ex. sur la chambre de pompage 2. In Figure 2, it is seen that the upper surface of a portion of the pump (including the portion of the pumping chamber 2) comprises only the smooth surfaces. These surfaces therefore do not include elements likely to retain liquids or solids so as to allow a natural flow of any liquid or natural slip of any solid that could fall on the pump. Also, Figure 2 shows at the same time the other possibility to achieve the distinctive feature of the present invention, so the protective means 6 which are similar to a hood, that is to say they have substantially the shape of a half-cylinder covering in this case the upper part of the drive motor 1. Of course, it would also be possible to make a pump in the spirit of the present invention in which the protection means 6 would be positioned in another part of the pump, e.g. ex. on the pumping chamber 2.
Par « partie supérieure » on se réfère ici, comme précédemment, au cas où la pompe selon la présente invention est disposée horizontalement, c'est-à-dire lorsque l'axe de rotation du moteur d'entraînement 1 et l'axe de rotation du rotor de la chambre de pompage 2, qui sont généralement confon- dus, sont parallèles au sol, les supports 13 et 14 de la pompe reposant alors normalement sur le sol (ou un support parallèle au sol). By "upper part" we refer here, as above, to the case where the pump according to the present invention is disposed horizontally, that is to say when the axis of rotation of the drive motor 1 and the axis of rotation of the rotor of the pumping chamber 2, which are generally confused due, are parallel to the ground, the supports 13 and 14 of the pump then normally resting on the ground (or a support parallel to the ground).
L'utilisation ci-dessus de l'adverbe « sensiblement » signifie que le demi-cylindre 6 a une forme qui est évidemment adaptée au moteur The above use of the adverb "substantially" means that the half-cylinder 6 has a shape which is obviously adapted to the engine
d'entraînement 1 , par exemple en comportant une découpe permettant au boîtier électrique 7 de saillir. 1, for example by having a cutout for the electrical box 7 to project.
Comme cela ressort de la figure 2, le demi-cylindre 6 ne recouvre que les ailettes supérieures 5 du moteur d'entraînement, les ailettes inférieures 16 apparaissant alors dans la partie inférieure du moteur d'entraînement 1 . As is apparent from FIG. 2, the half-cylinder 6 covers only the upper fins 5 of the drive motor, the lower fins 16 then appearing in the lower part of the drive motor 1.
De préférence, le demi-cylindre 6 est amovible, ce qui a l'avantage qu'il est facilement possible d'accéder au moteur d'entraînement 1 dans le cas de contrôle et de nettoyage approfondi. Preferably, the half-cylinder 6 is removable, which has the advantage that it is easily possible to access the drive motor 1 in the case of control and thorough cleaning.
Il est préférable également de prévoir qu'au moins certaines et idéalement toutes les surfaces supérieures du moteur d'entraînement 1 et/ou de la chambre de pompage 2, c'est-à-dire celles qui sont visibles depuis le dessus de la pompe, soient inclinées vers le bas, de façon à permettre l'élimination, par écoulement des liquides, ou par glissement des solides pendant le nettoyage, lorsque ces liquides ou solides sont présents sur ces surfaces. It is also preferable to provide at least some and ideally all the upper surfaces of the drive motor 1 and / or the pumping chamber 2, that is to say those which are visible from above the pump , are inclined downwards, so as to allow the elimination, by flow of liquids, or by sliding solids during cleaning, when these liquids or solids are present on these surfaces.
Comme exemples de surfaces supérieures, on peut citer celles désignées sur la figure 2 par les numéros de référence 8, 9, 10 et 1 1 pour la chambre de pompage 2 et par les numéros de référence 12 et 15 pour le moteur d'entraînement 1 . Examples of upper surfaces are those designated in FIG. 2 by reference numerals 8, 9, 10 and 11 for the pump chamber 2 and reference numerals 12 and 15 for the drive motor 1 .
L'inclinaison des surfaces concernées est de préférence d'au moins 5 degrés par rapport au sol, lorsque les supports 13 et 14 reposent sur le sol. The inclination of the surfaces concerned is preferably at least 5 degrees relative to the ground, when the supports 13 and 14 rest on the ground.
De préférence, on prévoit également que le séparateur de brouillard d'huile comporte un bloc-support commun au filtre et à l'échangeur thermique pour l'huile ce qui le rend compact, accessible et facilement nettoyable. Deuxième mode de réalisation Preferably, it is also provided that the oil mist separator comprises a common support block to the filter and the heat exchanger for the oil which makes it compact, accessible and easily cleaned. Second embodiment
Un deuxième mode de réalisation de l'invention est représenté sur les figures 3 à 7. A second embodiment of the invention is shown in FIGS. 3 to 7.
Comme on peut le voir sur ces figures, la pompe à vide rotative à palettes comporte une chambre de pompage 2 qui peut être comme celle des figures 1 et 2 et qui est connectée à un moteur d'entraînement 17. Celui-ci a la particularité de comprendre une double enveloppe ayant une partie externe formée d'un cylindre 18, visible sur la figure 3, dont la totalité ou la quasi- totalité est lisse du côté extérieur. La partie interne de cette double enveloppe, qui est en fait le carter du moteur non visible sur la figure 3, contient de façon connue, les composants habituels d'un moteur de pompe à vide rotative à palettes, qui peut être un moteur asynchrone. As can be seen in these figures, the rotary vane vacuum pump comprises a pumping chamber 2 which can be like that of Figures 1 and 2 and which is connected to a drive motor 17. The latter has the particularity to comprise a double jacket having an outer portion formed of a cylinder 18, visible in Figure 3, all or almost all of which is smooth on the outside. The inner part of this jacket, which is in fact the motor housing not visible in FIG. 3, contains, in known manner, the usual components of a rotary vane vacuum pump motor, which may be an asynchronous motor.
De préférence, la surface extérieure du cylindre 18 est lisse, contrairement au premier mode de réalisation où la surface extérieure (cf. figure 2) est généralement pourvue d'ailettes 16 de refroidissement. Preferably, the outer surface of the cylinder 18 is smooth, unlike the first embodiment where the outer surface (see Figure 2) is generally provided with fins 16 cooling.
Le cylindre 18 est espacé du carter (lisse ou non) de manière à former un espace dans lequel un fluide de refroidissement tel qu'un liquide, en particulier de l'eau, peut circuler, en entrant et sortant par les orifices 19 et 20. The cylinder 18 is spaced from the casing (smooth or not) so as to form a space in which a cooling fluid such as a liquid, in particular water, can circulate, entering and leaving through the orifices 19 and 20 .
L'avantage d'un refroidissement à l'eau est qu'il permet l'extraction de la chaleur générée par le moteur d'entraînement 17, sans avoir recours aux ailettes 16 (de la figure 2), dont la surface permet l'échange de la chaleur avec l'air. The advantage of cooling with water is that it allows the extraction of the heat generated by the drive motor 17, without having recourse to the fins 16 (of FIG. 2), the surface of which makes it possible to exchange of heat with the air.
De préférence, le cylindre 18 est borgne, c'est-à-dire fermé à son extrémité libre, ce qui facilite le nettoyage de la pompe. Preferably, the cylinder 18 is blind, that is to say closed at its free end, which facilitates the cleaning of the pump.
En général, dans ce mode de réalisation, le cylindre 18 n'est pas amovible car il est fixé au carter du moteur d'entraînement 17. Cependant, il serait également possible de prévoir un mode particulier de réalisation de la présente invention dans laquelle le cylindre 18 est également amovible. Comme dans le premier mode de réalisation de l'invention, il est avantageux de prévoir l'inclinaison de certaines et de préférences toutes les surfaces supérieures telles que les surfaces 8, 9, 10, 1 1 , 15, 21 , 22 et 23. In general, in this embodiment, the cylinder 18 is not removable because it is attached to the casing of the drive motor 17. However, it would also be possible to provide a particular embodiment of the present invention in which the cylinder 18 is also removable. As in the first embodiment of the invention, it is advantageous to provide the inclination of certain and preferred all the upper surfaces such as the surfaces 8, 9, 10, 1 1, 15, 21, 22 and 23.
Aussi, il est usuel, en cas d'utilisation d'une chambre de pompage 2 à palettes lubrifiées, de prévoir un séparateur de brouillard d'huile comme celui visible sur les figures 6, 7 et 8. Avantageusement, ce séparateur comporte un bloc-support commun au filtre et à l'échangeur thermique pour l'huile 25, ce qui le rend compact, accessible et facilement nettoyable. Also, it is usual, when using a pumping chamber 2 with lubricated blades, to provide an oil mist separator such as that shown in FIGS. 6, 7 and 8. Advantageously, this separator comprises a block -support common to the filter and the heat exchanger for the oil 25, which makes it compact, accessible and easily cleaned.
La description qui vient d'être donnée est celle de plusieurs modes de réalisation du dispositif selon l'invention, ne limitant cependant pas la portée de l'invention qui est en première ligne définie par les revendications. The description that has just been given is that of several embodiments of the device according to the invention, but does not limit the scope of the invention which is in the first line defined by the claims.
L'homme du métier réalisera les possibilités de développement, de modifications et d'applications de la pompe selon la présente invention, et en particulier dans d'autres domaines dans lesquels il est important de respecter des niveaux accrus d'hygiène. Those skilled in the art will realize the possibilities of development, modifications and applications of the pump according to the present invention, and in particular in other areas in which it is important to respect increased levels of hygiene.

Claims

Revendications claims
1 . Pompe à vide rotative à palettes, comprenant un moteur d'entraînement (1 , 17) coopérant avec une chambre de pompage à vide à palettes (2), caractérisé en ce que toutes les surfaces de la pompe visibles depuis le haut sont agencées de manière à ce qu'elles soient dépourvues d'éléments susceptibles de retenir des liquides ou des solides. 1. Rotary vane vacuum pump, comprising a drive motor (1, 17) cooperating with a vane vacuum pumping chamber (2), characterized in that all pump surfaces visible from the top are arranged they are devoid of elements likely to retain liquids or solids.
2. Pompe à vide rotative à palettes selon la revendication 1 , dans laquelle la pompe est, au moins sur une partie, munie de moyens de protection (6) dépourvus de surfaces ou creux susceptibles de retenir des liquides ou des solides. 2. Rotary vane vacuum pump according to claim 1, wherein the pump is, at least in one part, provided with protective means (6) free of surfaces or recesses capable of retaining liquids or solids.
3. Pompe à vide rotative à palettes selon la revendication 2, dans laquelle les moyens de protection présentent sensiblement la forme d'un demi- cylindre (6) recouvrant au moins une partie supérieure de la pompe. 3. Rotary vane vacuum pump according to claim 2, wherein the protection means have substantially the shape of a half-cylinder (6) covering at least an upper portion of the pump.
4. Pompe à vide rotative à palettes selon l'une quelconque des revendications 2 ou 3, dans laquelle les moyens de protection (6) sont amovibles. 4. rotary vane vacuum pump according to any one of claims 2 or 3, wherein the protective means (6) are removable.
5. Pompe à vide rotative à palettes selon l'une quelconque des revendications 2 à 4, dans laquelle les moyens de protection (6) sont positionnés uniquement au niveau du moteur d'entraînement (1 ). Rotary vane vacuum pump according to one of Claims 2 to 4, in which the protective means (6) are positioned only at the drive motor (1).
6. Pompe à vide rotative à palettes selon l'une des revendications précédentes, dans laquelle le moteur d'entraînement (1 ) est un moteur asynchrone à refroidissement à air. Rotary vane vacuum pump according to one of the preceding claims, in which the drive motor (1) is an asynchronous air-cooled motor.
7. Pompe à vide rotative à palettes selon la revendication 1 , dans laquelle le moteur d'entraînement (17) comprend une double enveloppe avec une partie externe formée d'un cylindre (18). The rotary vane vacuum pump of claim 1, wherein the drive motor (17) comprises a jacket with an outer portion formed of a cylinder (18).
8. Pompe à vide rotative à palettes selon la revendication 7, dans laquelle ledit cylindre (18) est un cylindre borgne. The rotary vane vacuum pump of claim 7, wherein said cylinder (18) is a blind cylinder.
9. Pompe à vide rotative à palettes selon la revendication 7 ou 8, dans laquelle le moteur d'entraînement (17) est un moteur asynchrone à refroidissement à eau ayant un carter formant avec le cylindre (18) un espace dans lequel un fluide de refroidissement peut circuler. A rotary vane vacuum pump as claimed in claim 7 or 8, wherein the drive motor (17) is a water-cooling asynchronous motor having a housing forming with the cylinder (18) a space in which a fluid of cooling can flow.
10. Pompe à vide rotative à palettes selon l'une des revendications précédentes, dans laquelle, lorsque l'axe de rotation du moteur d'entraînement (1 , 17) et celui du rotor de la chambre de pompage (2) sont parallèles au sol, certaines (8, 9, 10, 1 1 , 15, 21 , 22 et 23) au moins des surfaces supérieures du moteur d'entraînement (1 , 17) et/ou de la chambre de pompage (2) sont inclinées vers le bas. Rotary vane vacuum pump according to one of the preceding claims, in which, when the axis of rotation of the drive motor (1, 17) and that of the rotor of the pump chamber (2) are parallel to the some, (8, 9, 10, 11, 15, 21, 22 and 23) at least of the upper surfaces of the drive motor (1, 17) and / or the pumping chamber (2) are inclined towards the bottom.
1 1 . Pompe à vide rotative à palettes selon l'une des revendications précédentes, dans laquelle les palettes sont lubrifiées à l'huile. 1 1. Rotary vane vacuum pump according to one of the preceding claims, in which the vane is lubricated with oil.
12. Pompe à vide rotative à palettes selon la revendication précédente, dans laquelle la chambre de pompage (2) est reliée à un séparateur de brouillard d'huile (24). Rotary vane vacuum pump according to the preceding claim, wherein the pumping chamber (2) is connected to an oil mist separator (24).
13. Pompe à vide rotative à palettes selon la revendication précédente, dans laquelle le séparateur de brouillard d'huile (24) comporte un bloc- support (25) commun au filtre et à l'échangeur thermique pour l'huile. 13. Rotary vane vacuum pump according to the preceding claim, wherein the oil mist separator (24) comprises a support block (25) common to the filter and the heat exchanger for the oil.
EP13718174.9A 2013-04-19 2013-04-19 Vane-type rotary vacuum pump Active EP2986821B1 (en)

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KR (1) KR102035838B1 (en)
CN (1) CN105121784A (en)
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BR (1) BR112015026027B1 (en)
CA (1) CA2907899C (en)
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HK (1) HK1214325A1 (en)
PL (1) PL2986821T3 (en)
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CN112360780B (en) * 2020-11-10 2022-05-24 珠海创烨科技有限公司 Ceramic vacuum pump

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DK2986821T3 (en) 2021-02-15
EP2986821B1 (en) 2020-12-30
PT2986821T (en) 2021-02-10
CA2907899C (en) 2020-01-14
KR102035838B1 (en) 2019-10-23
RU2015149295A (en) 2017-05-24
HK1214325A1 (en) 2016-07-22
AU2013387156A1 (en) 2015-11-12
WO2014169962A1 (en) 2014-10-23
AU2013387156B2 (en) 2017-06-29
CN105121784A (en) 2015-12-02
CA2907899A1 (en) 2014-10-23
ES2854989T3 (en) 2021-09-23
TWI660128B (en) 2019-05-21
BR112015026027B1 (en) 2022-09-27
TW201510372A (en) 2015-03-16
KR20160002963A (en) 2016-01-08
BR112015026027A2 (en) 2017-07-25
RU2641409C2 (en) 2018-01-17
JP2016519243A (en) 2016-06-30
PL2986821T3 (en) 2021-07-26

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