BE510614A - - Google Patents
Info
- Publication number
- BE510614A BE510614A BE510614DA BE510614A BE 510614 A BE510614 A BE 510614A BE 510614D A BE510614D A BE 510614DA BE 510614 A BE510614 A BE 510614A
- Authority
- BE
- Belgium
- Prior art keywords
- grooves
- nozzle
- swirl chamber
- baffle
- sprayer
- Prior art date
Links
- 238000003754 machining Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 2
- 239000008188 pellet Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001376 precipitating Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3484—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with a by-pass conduit extending from the swirl chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
- B05B1/3442—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cone having the same axis as the outlet
Landscapes
- Nozzles (AREA)
Description
<Desc/Clms Page number 1>
PERFECTIONNEMENT AUX; GICLEURS. DU TYPE, A RETOUR.
La présente invention concernee les gicleurs et plus particuliè- rement la partie de ceux-ci constituant le pulvérisateur proprement dit.
Les pulvérisateurs actuellement utilisés sont généralement consti- tués par une "chicane" pourvue de rainures droites à fond rectiligne aboutis- sant à une chambre de turbulence centrale .dans laquelle l'huile acquiert une rotation rapide avant de sortir par l'orifice de pulvérisation.
-Les gicleurs du type à retour possèdent d'autre part un orifice ' central par lequel une partie du liquide peut revenir sur l'aspiration de la pompe.
L'usinage des rainures à fond rectiligne amenant le liquide à la chambre de turbulence,' est très malaisé à réaliser du fait des dimensions particulièrement réduites de ces organes.
Enfin, on a constaté que, même dans les gicleurs à retour,il est difficile de réaliser des débits minima inférieurssà 25 à 30 % du débit maxi- mum tout en gardant une pulvérisation satisfaisante.
La présente invention a pour but de remédier à ces inconvénients et de procurer un gicleur dont la chicane est de fabrication fortement sim- plifiée et plus économique et qui communique aux jets d'huile une direction favorable à la formation d'une pulvérisation parfaite, même à des débits très réduits descendant jusqu'à 10% du débit maximum.
Dans ce buta le gicleur., objet de l'invention, est caractérisé en ce que sa chicane présente des rainures ou conduits à fond incurvé.
Dans-la réalisation pratique de l'invention, cette incurvation est constituée par un arc-de cercle dirigé depuis les trous d'amenée d'huile vers la chambre de turbulence sous l'orifice de pulvérisation.
Afin de bien faire comprendre l'invention, on en donnera ci-après un exemple de réalisation.
<Desc/Clms Page number 2>
La fig. 1 représente en coupe la tête d'un pulvérisateur pourvue de sa chicane et de sa pastille d'éjection.
La fig. 2 montre en coupe le corps de fixation maintenant la chi- cane et la pastille en place dans la tête du pulvérisateur.
La fig. 3 est une coupe de la pastille isolée.
La fig. 4 est une coupe de-la chicane isolée.
La fig. 5 montre la chicane en plan.
Comme le montrent ces figures, le pulvérisateur est composé, comme connu, d'une tête 1 qui reçoit intérieurement une pastille 2 percée d'une ouverture centrale 3 d'éjection d'huile pulvérisée., et une chicane 4 percée de trous 5 qui débouchent dans des rainures 6 communiquant avec une chambre 7 de turbulence. Un conduit 8 permet le retour de l'huile.
Ces éléments sont maintenus en place dans la tête 1 par un corps de fixation 9 (fig. 2).
Conformément à l'invention, les rainures 6 ont leur fond 10 incur- vé, de manière à diriger les filets d'huile depuis les trous 5 suivant un parcours courbe vers la chambre 7 de turbulence et l'ouverture centrale 3 d'éjection.
Le fond incurvé de ces rainures est en pratique un arc de cercle et l'usinage de ces rainures est particulièrement simple. Il est réalisé par le simple avancement d'une fraise circulaire dans le plan de la rainure à tracer et tangent à la chambre de turbulence 7.
L'incurvation du fond de ces rainures a pour effet de décoller les filets d'huile du fond de'la chambre de turbulence et de les précipiter contre'le fond 11 de la pastille 2.
<Desc / Clms Page number 1>
DEVELOPMENT IN; SPRINKLERS. OF THE TYPE, BACK.
The present invention relates to the nozzles and more particularly to the part of these constituting the sprayer proper.
The sprayers presently in use are generally a "baffle" with straight grooves with a straight bottom terminating in a central swirl chamber in which the oil acquires rapid rotation before exiting through the spray orifice.
-The return type nozzles have on the other hand a central orifice through which part of the liquid can return to the suction of the pump.
The machining of the grooves with a rectilinear bottom bringing the liquid to the swirl chamber is very difficult to achieve because of the particularly small dimensions of these members.
Finally, it has been observed that, even in return nozzles, it is difficult to achieve minimum flow rates less than 25 to 30% of the maximum flow rate while maintaining satisfactory spraying.
The object of the present invention is to remedy these drawbacks and to provide a nozzle the baffle of which is of greatly simplified and more economical manufacture and which gives the oil jets a direction favorable to the formation of a perfect spray, even. at very low flow rates down to 10% of the maximum flow rate.
In this buta the nozzle., Object of the invention, is characterized in that its baffle has grooves or ducts with a curved bottom.
In the practical embodiment of the invention, this curvature is formed by an arc of a circle directed from the oil supply holes towards the swirl chamber under the spray orifice.
In order to make the invention fully understood, an exemplary embodiment will be given below.
<Desc / Clms Page number 2>
Fig. 1 shows in section the head of a sprayer provided with its baffle and its ejection pellet.
Fig. 2 shows in section the fixing body holding the chuck and the pad in place in the sprayer head.
Fig. 3 is a section of the isolated pellet.
Fig. 4 is a section of the isolated baffle.
Fig. 5 shows the chicane in plan.
As shown in these figures, the sprayer is composed, as known, of a head 1 which internally receives a pellet 2 pierced with a central opening 3 for sprayed oil ejection., And a baffle 4 pierced with holes 5 which open into grooves 6 communicating with a turbulence chamber 7. A pipe 8 allows the return of the oil.
These elements are held in place in the head 1 by a fixing body 9 (FIG. 2).
According to the invention, the grooves 6 have their bottom 10 curved, so as to direct the oil streams from the holes 5 following a curved path towards the turbulence chamber 7 and the central ejection opening 3.
The curved bottom of these grooves is in practice an arc of a circle and the machining of these grooves is particularly simple. It is achieved by simply advancing a circular milling cutter in the plane of the groove to be traced and tangent to the swirl chamber 7.
The curvature of the bottom of these grooves has the effect of detaching the oil streams from the bottom of the swirl chamber and of precipitating them against the bottom 11 of the pellet 2.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE510614A true BE510614A (en) |
Family
ID=149660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE510614D BE510614A (en) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE510614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2782024A1 (en) * | 1998-08-04 | 2000-02-11 | Valois Sa | DISPENSING HEAD AND DEVICE FOR DISPENSING A FLUID PRODUCT COMPRISING SUCH A HEAD |
-
0
- BE BE510614D patent/BE510614A/fr unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2782024A1 (en) * | 1998-08-04 | 2000-02-11 | Valois Sa | DISPENSING HEAD AND DEVICE FOR DISPENSING A FLUID PRODUCT COMPRISING SUCH A HEAD |
| WO2000007736A1 (en) * | 1998-08-04 | 2000-02-17 | Valois S.A. | Dispensing head and fluid product dispensing device comprising same |
| US6585172B2 (en) | 1998-08-04 | 2003-07-01 | Valois S.A. | Dispenser head and fluid product dispensing device comprising same |
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