FR2756327A1 - HYDRAULIC PUMP WITH REDUCED PRESSURE POINTS - Google Patents
HYDRAULIC PUMP WITH REDUCED PRESSURE POINTS Download PDFInfo
- Publication number
- FR2756327A1 FR2756327A1 FR9710586A FR9710586A FR2756327A1 FR 2756327 A1 FR2756327 A1 FR 2756327A1 FR 9710586 A FR9710586 A FR 9710586A FR 9710586 A FR9710586 A FR 9710586A FR 2756327 A1 FR2756327 A1 FR 2756327A1
- Authority
- FR
- France
- Prior art keywords
- pump
- resonator
- chamber
- reduced pressure
- pressure points
- 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
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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
- F04C15/0049—Equalization of pressure pulses
-
- 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
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
-
- 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
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/13—Noise
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/14—Pulsations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Rotary Pumps (AREA)
- Control Of Transmission Device (AREA)
Abstract
L'invention s'insère dans le domaine des pompes hydrauliques. Un corps du résonateur (1) est relié, au moyen de tirants passant dans des trous (6), au corps pompe dans le but d'obtenir une réduction drastique des encombrements et du nombre de raccords et tubations nécessaires. L'invention est avantageusement appliquée aussi bien sur des pompes à engrenages que sur des pompes à pistons.The invention relates to the field of hydraulic pumps. A resonator body (1) is connected, by means of tie rods passing through holes (6), to the pump body in order to obtain a drastic reduction in the overall dimensions and the number of fittings and tubing required. The invention is advantageously applied both to gear pumps and to piston pumps.
Description
La présente invention a pour objet une pompe hydrauliqueThe present invention relates to a hydraulic pump
à points de pression réduits.at reduced pressure points.
Plus précisément, la pompe incorpore un dispositif dit résonant pour la réduction sélective de l'ampleur des points de pression qui causent la production du bruit. Dans les installations hydrauliques existent différentes causes génératrices de bruit qui sont amplifiées par la présence du fluide hydraulique et propagées par celui-ci More specifically, the pump incorporates a so-called resonant device for the selective reduction of the magnitude of pressure points that cause the production of noise. In the hydraulic installations there are different noise-generating causes which are amplified by the presence of the hydraulic fluid and propagated by it
dans tout le circuit au travers des conduits. throughout the circuit through the ducts.
Plusieurs améliorations, à différents niveaux de coûts, peuvent être adoptées pour réduire les bruits dans un circuit hydraulique; parmi les différents systèmes de réduction de l'énergie sonore, celui probablement plus connu et appliqué est constitué d'une chambre résonante consistant en une chambre de volume défini reliée au travers d'un canal de forme et de dimensions appropriées Several improvements at different cost levels can be adopted to reduce noise in a hydraulic system; Among the various sound energy reduction systems, the one probably more known and applied consists of a resonant chamber consisting of a defined volume chamber connected through a channel of appropriate shape and size.
avec le conduit d'envoi du circuit hydraulique. with the delivery duct of the hydraulic circuit.
Actuellement, toutes les chambres résonantes ou communément résonateurs sont des éléments externes aux pompes qui sont reliés au moyen d'une tubation faisant Currently, all resonant chambers or commonly resonators are external elements to pumps that are connected by means of tubing
office de canal d'adduction.canal of adduction.
L'inconvénient principal est dû au fait que le résonateur résulte être un objet à positionner séparément de la pompe, disposant d'espaces restreints dans lesquels il faut positionner de manière accessible également la The main disadvantage is due to the fact that the resonator results to be an object to be positioned separately from the pump, having restricted spaces in which it is necessary to position in an accessible manner also the
tubation pour le relier à la pompe elle-même. tubing to connect it to the pump itself.
Le but de la présente invention est de réaliser un résonateur incorporé dans la pompe, doté de la même The object of the present invention is to provide a resonator incorporated in the pump, provided with the same
forme et privé de liaison externe avec la pompe elle- form and private external link with the pump itself
même.even.
Un tel but est atteint par la pompe hydraulique à points de pression réduits objet de la présente invention, caractérisée par le fait qu'elle comprend une cavité résonante, rendue solidaire du corps de la pompe et renfermant en son intérieur une chambre qui communique avec une chambre d'envoi de la pompe au moyen d'un canal Such a purpose is achieved by the hydraulic pump with reduced pressure points object of the present invention, characterized in that it comprises a resonant cavity, secured to the body of the pump and enclosing in its interior a chamber which communicates with a pump sending chamber by means of a channel
d'adduction formé dans le corps de la pompe. of adduction formed in the body of the pump.
2 27563272 2756327
Cette caractéristique et d'autres résulteront majeurement This and other features will result
évidenciées dans la description d'une forme de evidenced in the description of a form of
réalisation préférée illustrée dans ce qui suit, à pur titre d'exemple non limitatif dans les tables de dessin jointes dans lesquelles: - la figure 1 illustre une vue générale de la pompe du type à engrenages avec une cavité résonante incorporée; - la figure 2 illustre le résonateur dans une vue de face; - la figure 2a illustre le résonateur dans une vue latérale partiellement en coupe; - la figure 3 illustre le corps de la pompe dans une vue de face; - la figure 3a illustre le corps de la pompe dans une vue latérale partiellement en coupe; - la figure 4 illustre une vue générale d'une pompe du preferred embodiment illustrated in the following, by way of non-limiting example in the attached drawing tables in which: - Figure 1 illustrates a general view of the gear type pump with an incorporated resonant cavity; FIG. 2 illustrates the resonator in a front view; - Figure 2a illustrates the resonator in a side view partially in section; - Figure 3 illustrates the body of the pump in a front view; - Figure 3a illustrates the body of the pump in a side view partially in section; FIG. 4 illustrates a general view of a pump of the
type à pistons avec cavité résonante incorporée. piston type with built-in resonant cavity.
A un corps pompe 2 du type à engrenage est relié un corps du résonateur 1 présentant la même forme externe et rendu solidaire de celui-ci au moyen de tirants 7 passant a u travers des deux corps cités dans des trous To a pump body 2 of the gear type is connected a body of the resonator 1 having the same external shape and secured to it by means of tie rods 7 passing through the two bodies mentioned in holes
longitudinaux 6 correspondants.longitudinal 6 corresponding.
Le corps du résonateur 1 contient une chambre 3 de volume opportun reliée à une chambre d'envoi 4 de la pompe uniquement au travers d'un canal d'adduction 5, lui aussi opportunément dimensioné, dont une partie 5a est formée dans le corps pompe 2 et une autre partie 5b est formée The body of the resonator 1 contains a chamber 3 of suitable volume connected to a delivery chamber 4 of the pump only through a supply channel 5, also suitably sized, a portion 5a is formed in the pump body 2 and another part 5b is formed
dans le corps du résonateur 1.in the body of the resonator 1.
Dans la description reportée ci-dessus, on fait In the description given above, we make
spécifiquement référence à une pompe à engrenages, mais il est évident que le concept innovant peut être transferé même sur un autre type de pompe à pulsations specifically referring to a gear pump, but it is obvious that the innovative concept can be transferred even to another type of pulse pump
comme par exemple sur une pompe à pistons. as for example on a piston pump.
En référence à la figure 4, 8 indique une pompe à pistons dont le conduit d'envoi 9 est relié à une chambre With reference to FIG. 4, 8 indicates a piston pump whose delivery duct 9 is connected to a chamber
résonante 10 au travers d'un conduit 11. resonant 10 through a conduit 11.
La chambre résonante 10 est formée dans un corps 12 rendu The resonant chamber 10 is formed in a body 12 rendered
solidaire du corps de la pompe 8.integral with the body of the pump 8.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT96PR000021 IT241428Y1 (en) | 1996-11-22 | 1996-11-22 | REDUCED PRESSURE PULSE HYDRAULIC PUMP. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2756327A1 true FR2756327A1 (en) | 1998-05-29 |
FR2756327B3 FR2756327B3 (en) | 1999-01-15 |
Family
ID=11396010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9710586A Expired - Lifetime FR2756327B3 (en) | 1996-11-22 | 1997-08-22 | HYDRAULIC PUMP WITH REDUCED PRESSURE POINTS |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE29714138U1 (en) |
FR (1) | FR2756327B3 (en) |
GB (1) | GB2319564B (en) |
IT (1) | IT241428Y1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBO20040639A1 (en) | 2004-10-15 | 2005-01-15 | Cnh Italia Spa | PUMPING DEVICE FOR LIQUIDS, IN PARTICULAR FOR OIL |
DE202005013303U1 (en) * | 2005-08-23 | 2005-11-24 | Trw Automotive Gmbh | Pump, especially motor and pump unit for motor vehicle's servo steering system, has fluid outlet of pressure limiting valve connected to suction connection of pump |
JP4347859B2 (en) * | 2006-03-24 | 2009-10-21 | 本田技研工業株式会社 | Oil pump |
DE102014109066A1 (en) | 2014-06-27 | 2015-12-31 | Claas Industrietechnik Gmbh | transmission assembly |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5520687U (en) * | 1978-07-28 | 1980-02-08 | ||
GB2036873B (en) * | 1978-12-01 | 1983-02-09 | South Western Ind Res | Silencing fluid pumps and motors |
DE2901240C2 (en) * | 1979-01-13 | 1981-10-01 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Radial piston pump |
EP0050621A1 (en) * | 1980-04-28 | 1982-05-05 | KOOPMANN, Gary H. | Noise reduction system |
JPH0441260Y2 (en) * | 1984-10-15 | 1992-09-28 |
-
1996
- 1996-11-22 IT IT96PR000021 patent/IT241428Y1/en active
-
1997
- 1997-08-07 DE DE29714138U patent/DE29714138U1/en not_active Expired - Lifetime
- 1997-08-22 FR FR9710586A patent/FR2756327B3/en not_active Expired - Lifetime
- 1997-09-01 GB GB9718482A patent/GB2319564B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB9718482D0 (en) | 1997-11-05 |
FR2756327B3 (en) | 1999-01-15 |
ITPR960021V0 (en) | 1996-11-22 |
GB2319564A (en) | 1998-05-27 |
IT241428Y1 (en) | 2001-05-09 |
GB2319564B (en) | 2000-08-23 |
ITPR960021U1 (en) | 1998-05-22 |
DE29714138U1 (en) | 1997-10-16 |
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