Multi-jet watering nozzle with counter-rotating elements for underground pop-up sprinkler

• US 6,651,904 B2
• Filed: 10/23/2001
• Issued: 11/25/2003
• Est. Priority Date: 02/24/2000
• Status: Expired due to Term

• Current Assignee: Claber SpA
• Original Assignee: Claber SpA
• Inventors: Roman, Gianfranco
• Primary Examiner(s): DOUGLAS, LISA ANN
• Application Number:
  US10/009,400
• Publication Number:
  US 20030071140A1
• Time in Patent Office: 763 Days
• Field of Search: 239/200-201, 239/203, 239/204, 239/222.11, 239/222.13, 239/222.15, 239/222.17, 239/230, 239/233, 239/240, 239/244, 239/251, 239/383
• US Class Current: 239/204
• CPC Class Codes: B05B 1/26 with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
• CPC Class Codes: B05B 15/16 for preventing non-intended contact between spray heads or nozzles and foreign bodies, e.g. nozzle guards
• CPC Class Codes: B05B 15/74 driven by the discharged fluid
• CPC Class Codes: B05B 3/0486 the spray jet being generated by a rotary deflector rotated by liquid discharged onto it in a direction substantially parallel its rotation axis

Abstract

A watering nozzle (16) for underground pop-up sprinkler (1) comprises a bottom part (17) and a top part (37) comprising a distribution cylinder (40). The bottom part (17) is provided with an annular opening (100) that receives the flow of water coming from the base of the sprinkler (1) and generates a jet in the form of a spray having pre-established angular extension that flows into a distribution cylinder (40) provided with radial slots (41) arranged as an arc of circumference that proceed from its bottom to its side wall so as to subdivide the single spray jet into single jets. The distribution cylinder (40) has on top a fan wheel (70) having a diameter greater than the cylinder and provided with external fins (71) that extend downward. The distribution cylinder (40) rotates under the action of the single jet of water on the walls of said radial slots and by a set of gears (200) the fan wheel (70) is made rotate in opposite sense as compared with the cylinder (40) in such a way that the various jets of water coming out of the slots (41) are deviated in radial direction.

Claims

1. Watering nozzle for underground pop-up sprinkler, comprising a bottom part (17) fastened to a risible part (4) of the sprinkler (1), suitable to receive the water of flow coming from the base of the sprinkler (1) and to generate a jet in the form of a spray with a pre-established angular extension, and a top part (37) that is made up of a distribution cylinder (40) provided with radial slots (41) that proceed from its bottom to its sidewall so as to divide the water spray coming from said annular opening (100) into single jets, said distribution cylinder (40) being rotatable about its own axis due to the action of the water against the walls of said its radial slots (41), characterised in that at the top of said distribution cylinder (40) a fan wheel (70) coaxial to the cylinder (40) but with greater diameter is placed, said fan wheel (70) being cinematically connected with the distribution cylinder (40) so as to rotate in opposite sense as regards the cylinder (40) due to the effect of the rotation of the latter and being provided with fins (71) that extend downward in order to deviate in opposite sense with respect the one determined by the rotation of distribution cylinder (40), and therefore in radial direction, the water jets coming out of said slots (41) of said cylinder (40).

2. Watering nozzle according to claim 1, characterised in that said annular opening (100) has an angular extension of 360°

.

3. Watering nozzle according to claim 1, characterised in that said annular opening (100) is reduced circumferentially so as to obtain a water jet with shape of spray with an angular extension substantially of 90°

.

4. Watering nozzle according to claim 1, characterised in that said annular opening (100) is reduced circumferentially so as to obtain a water jet with shape of spray with a angular extension substantially of 180°

.

5. Watering nozzle according to claim 1, characterised in that said bottom part (17) comprises an annular insert (20) provided with a transversal wall (26) provided with a distribution of holes (28) for the flow of the water inside an area (92) for the top containment defined between said insert (20) and a cylindrical covering nozzle (22) that it encloses said annular file (20), being said insert (20) provided with a central extension (27) inserted into a central hole (32) of said covering nozzle (22) so as to define said annular opening (100).

6. Watering nozzle according to claim 5, characterised in that said angular opening (100) is reduced circumferentially by the presence of a radial projection (29) shaped as an arc of circumference of the external lateral surface of said extension (27) of said insert (20).

7. Watering nozzle according to claim 6, characterised in that said projection (29) has an angular extension substantially equal to 180°

.

8. Watering nozzle according to claim 6, characterised in that said projection (29) has an angular extension substantially equal to 270°

.

9. Watering nozzle according to claim 5, characterised in that said bottom part (17) is made up of a bottom annular portion (18) that is fastened to the top end of the risible part (2) of the sprinkler (1) and communicating with the output mouth of the same, and of a top annular portion (80) defining with said insert (20) a bottom containment area (98) that communicates with said top containment chamber (92) through said distribution of holes (28) of the annular insert (20) and with the output mouth of the risible part (4) of the sprinkler (1) through additional distributions of holes (24, 82) of said bottom and top annular portions (18, 80).

10. Watering nozzle according to claim 9, characterised in that it comprises an adjustment screw (21) held by said top annular portion (80) in order to regulate the flow of the water output by said risible part (4) of the sprinkler (1).

11. Watering nozzle according to claim 1, characterised in that said fan wheel (70) is kinematically connected with said distribution cylinder (40) by means of a set of gears (200) that comprises a toothed rim (45) that is fastened at the top to said distribution cylinder (40), toothed wheels (49) that are freely revolving over said distribution cylinder (40) that engage with said toothed rim (45) and a toothed wheel (60) that is fixedly mounted to said fan wheel (70) that engages with said toothed wheels (49).