Bottom nozzle for pool and / or fountain

Abstract

The present disclosure relates to a pool and / or fountain nozzle (100). The nozzle (100) includes a tubular main body (10) extending along a main development direction (A), between a first end region (1) and a second end region (2), and defining a passageway (20) for a fluid to be distributed in a pool and / or fountain. The passageway (20) extends between an inlet opening (21) and an outlet opening (22) of the fluid. The nozzle (100) includes a regulating device (30) for a flow of a fluid to be distributed in a pool and / or fountain, wherein said regulating device (30) includes a first element (31) solidly associated with the main tubular body (10) and a second element (32) movably associated with the first element (31) so as to move relative to the latter at least between a first position, or minimum flow position, and a second position, or maximum flow position, depending on the flow of fluid generated by a fluid source of a pool and / or fountain.

Description

[0001] BOTTOM NOZZLE FOR POOL AND / OR FOUNTAIN

[0002] DESCRIPTION

[0003] The present disclosure generally refers to a fluid distribution or circulation device, particularly for swimming pools and / or fountains, preferably placed at the bottom of the pool.

[0004] In more detail, the present disclosure concerns a nozzle, configured to be preferably placed at the bottom of a pool, particularly a pool or fountain nozzle, configured to distribute a flow of fluid generated by a fluid source into a pool and / or fountain and to keep that flow grazing the floor, or bottom, in order to improve the general circulation of water.

[0005] In many areas there is a need for devices to circulate or distribute a fluid such as air, gas, water or other liquids.

[0006] This need is particularly felt in the technical field of swimming pools or fountains, where fluid circulation devices, particularly nozzles, play a critically important role in ensuring a healthy, hygienic and pleasant aquatic environment for users.

[0007] In fact, the proper and efficient circulation of water in swimming pools is of paramount importance for several aspects, including the maintenance of water quality, the even distribution of chemical treatments, and the optimization in general of conditions for bathers and more generally of the water contained.

[0008] Specifically, in the technical field of swimming pools, bottom nozzles (thus placed on the bottom floor) are essential to direct and regulate the flow of water appropriately and thus contribute to several key functions. For example, nozzles promote uniform water circulation throughout the entire volume of the pool and / or fountain. Nozzles are also responsible for the efficient mixing of chemicals within pools, whether they are pools or fountains, promoting the homogeneous distribution of disinfectants, pH regulators, and other treatments aimed at maintaining water quality.

[0009] Traditionally known nozzles, particularly in the swimming pool industry, while advantageous in many ways, still suffer from some critical issues. In fact, known nozzles often adopt a static approach, with fixed openings or manual adjustments. Such a design poses different problems.

[0010] First, known nozzles may show limitations in handling pressure reductions, leading to negative fluctuations in the velocity of the outgoing water and the corresponding range of action they provide.

[0011] In addition, the increasing adoption within natatorial systems of variable frequency pumps necessitates a more adaptive and dynamic approach to which traditional nozzles often struggle to respond effectively. In addition to this, lack of precise control over the nozzle outlet section can adversely affect water distribution and mixing of chemicals, compromising the overall quality of the pool or fountain.

[0012] More specifically, currently known nozzles produce positive changes in outflow velocity along with a decrease in the pressure of the same flow relative to the pressure available at the nozzle inlet. Consequently, given the direct correlation between the pressure at the nozzle inlet and the fluid exit velocity from the nozzle, in order to keep the latter as uniform as possible it is necessary to keep the inlet pressure constant. Should this vary, in order to make sure that the fluid exit velocity remains constant, it is necessary, with the currently known nozzles, to intervene manually to change their outlet cross section. Such an operation is not possible since pressure variations are continuous and not programmable.

[0013] In this regard, it should then be noted that in the swimming facility sector, fluid pressure is generated by a water circulation pump. Such a circulation pump, depending on various factors, such as the time of day or the number of swimmers in the pool that thus requires more care in disinfecting and cleaning the water, produces different nozzle inlet pressures.

[0014] Therefore, there is a strong need for a nozzle that provides uniform performance in terms of fluid outlet velocity and range of action, together with low pressure drop, depending on the different pressure and flow conditions at the nozzle inlet.

[0015] Additionally, currently known nozzles are characterized by limited, or at least not optimized, radii of action. For this reason, especially in large plants, a large number of nozzles is required.

[0016] The purpose of this disclosure is to make available a pool and / or fountain nozzle to overcome the above-mentioned drawbacks with reference to the known technique and / or to achieve additional benefits.

[0017] This is achieved through a pool nozzle and / or fountains as defined in the independent claim. Secondary features and forms of special embodiments of the subject matter of this disclosure are defined in the corresponding dependent claims.

[0018] In particular, the pool and / or fountain nozzle according to the present disclosure is configured to distribute a fluid flow generated by a fluid source into a pool and / or fountain. For example, the fluid source may include a pump, particularly a water circulation pump.

[0019] In detail, the nozzle according to the present disclosure includes a tubular main body extending along a main development direction between a first end region and a second end region of the same nozzle. The tubular body further defines a passage passageway of fluid to be distributed in a pool of a pool. Preferably, such a fluid passage passageway is configured to clean the flow from turbulence and create a laminar flow. Such a passageway extends between a fluid inlet opening and an outlet opening of the same fluid. Preferably, the fluid inlet opening is located at, or near, the first nozzle end region, while the outlet opening is located at, or near, the second nozzle end region.

[0020] The nozzle according to the present disclosure further includes a device for regulating a flow of fluid to be distributed in the pool of a swimming pool. The regulating device is located in the nozzle passageway, axially to the main tubular body, along the main direction of development. In detail, the regulating device comprises a first element solidly associated with the main tubular body, and a second element movably associated with the first element, and preferably arranged at the fluid outlet opening. In particular, the second element is configured to move, preferably seamlessly with respect to the first element, along the main direction of development, at least between a first position, or minimum flow limit position, and a second position, or maximum flow limit position, depending on the fluid flow generated by the pool fluid source. In the first position, or minimum flow position, a first fluid flow, or minimum fluid flow, is allowed to flow out of the nozzle, while in the second position, or maximum fluid position, a second fluid flow, greater than the first fluid flow, is allowed to flow out of the nozzle. Specifically, the change in position of the second element is a gradual change, given mainly by the flow rate of fluid flow generated by the pool fluid source. Such first position, or position of minimum flow, and such second position, or position of maximum flow, are end positions, between which the second element can take infinite intermediate positions, depending on the fluid flow rate generated by the fluid source. In other words, the second element of the regulating device is movable according to the fluid flow rate generated by the fluid source, such as a pump, of a pool and / or fountain. Said second element, in detail, is configured to change the outlet opening of the passageway as a function of the fluid flow rate generated by the fluid source, at least between a minimum outlet opening condition and a maximum outlet opening condition, in order to equalize, or make stable, the fluid velocity exiting the nozzle as the working conditions of the fluid source change. In detail, for this purpose, the second element is movable with respect to the first element from a first position, in which the outlet opening has a first section, and a second position, in which the outlet opening has a second section, in which such second section is larger than the first section. Furthermore, advantageously, the nozzle according to the present disclosure is configured to allow the fluid flow to escape 360°, orthogonally to the main direction of development of the main body of the nozzle. In detail, preferably, the nozzle structure does not interrupt the flow of fluid in a direction radial to the main direction of development of the nozzle itself, ensuring optimal distribution of fluid in the pool without interruption or gap. In other words, such outflow of fluid flow from the nozzle in the radial direction orthogonal to the main direction of development of the main body is continuous.

[0021] According to a preferred aspect of the present disclosure, the nozzle includes elastic means disposed between the first element and the second element of the regulating device. In detail, such elastic means, preferably comprising a spring, are configured to adjust a position of the second element relative to the first element of the regulating device according to the fluid flow, or flow rate, generated by the fluid source. In detail, preferably, such elastic means have a main direction of development parallel, in particular axial, to the main direction of development of the nozzle, and comprise a first end associated with the first element of the regulating device, and a second end, opposite to the first end, associated instead with the second element of the regulating device.

[0022] Preferably, in the first position, or position of minimum flow, of the second portion of the regulating device, the elastic means are in a first configuration, or resting configuration, or extended configuration, while in the second position, or position of maximum flow, of the second portion of the regulating device, the elastic means are in a second configuration, or deformed configuration, or compressed configuration. Elastic means can be configured to have both linear and nonlinear deformations depending on the desired adjustment result. Thus, advantageously, the regulating device is configured for a self-adjustment of the fluid flow out of the nozzle, depending on the fluid flow rate generated by the fluid source. Specifically, compressing the spring elements, or changing their configuration from the first to the second configuration, allows the change of the section of the outlet opening of the nozzle passageway, allowing more or less fluid to flow out depending on the working conditions of the fluid source.

[0023] According to a further preferred aspect of the present disclosure, the second regulating device element includes flow distribution means in the nozzle passageway. Advantageously, such distribution means enable uniform distribution of fluid flow from the inlet opening within the nozzle passageway. Advantageously, the distribution means are arranged at the fluid inlet opening.

[0024] Preferably, fluid flow distribution means include a substantially conical or pyramidal element having a first end region associated with the second element of the regulating device, and a second end region, opposite the first end region, facing the fluid inlet opening. As such, the second end region has a smaller cross-sectional area than the first end region. Preferably, further, the second element of the regulating device further comprises a first portion extending parallel to, or substantially parallel to, the main direction of nozzle development and associated with the elastic means. Preferably, the second element of the regulating device further comprises a second portion, which is associated with the first portion, and which instead extends perpendicularly, or substantially perpendicularly, to the main direction of development of the nozzle. Preferably, the second portion is placed at the fluid outlet opening, preferably in such a way that the cross-sectional area of said outlet opening can be increased or decreased depending on the configuration of the elastic means and, therefore, the fluid flow rate generated by the fluid source.

[0025] According to a further preferred aspect of the present disclosure, the main body of the nozzle includes an annular element disposed at the fluid outlet opening. Such an annular element is configured to distribute fluid flow exiting the nozzle into a pool of a pool along a distribution direction perpendicular, or substantially perpendicular, to the main direction of development of the nozzle. The annular element can be made of piece with the main body. In other words, the main body and the annular element can be one body.

[0026] Advantageously, the annular element of the main body has a second main direction of development, orthogonal or substantially orthogonal to the main direction of development of the tubular main body, and extending between a first end of the annular element and a second end of the annular element, in which the first end of the annular element is associated with the tubular main body of the nozzle, while the second end of the annular element is opposite to the first end. The annular element also includes a concave surface that extends between the first end and the second end of the annular element. Advantageously, the annular element so conformed is configured to generate a Coanda effect in the flow of fluid exiting the nozzle, enhancing the distribution of such flow along a radial direction of the nozzle, or along a direction perpendicular or substantially perpendicular to the first main direction of development of the main body of the nozzle. In other words, such an annular element is configured to optimize the radius of action of the nozzle.

[0027] Further advantages, features, and ways of using the subject of this disclosure will be evident from the following detailed description of its forms of implementation, presented for illustrative and non-limiting purposes.

[0028] However, it is evident how each form of realization of the subject of this disclosure may present one or more of the advantages listed above; in any case, it is not required that each form of realization present all the advantages listed simultaneously.

[0029] Reference will be made to the figures in the attached drawings, in which: Figure 1 represents a perspective view of a nozzle according to a preferred aspect of the present disclosure;

[0030] - Figure 2 represents an exploded view of a nozzle according to a preferred aspect of the present disclosure;

[0031] - Figure 3 shows a side view of a nozzle having an regulating device in a first position according to a preferred aspect of the present disclosure;

[0032] - Figure4 shows a side section view of a nozzle having an regulating device in a first position according to a preferred aspect of the present disclosure;

[0033] - Figure 5 shows a side view of a nozzle having an regulating device in a second position according to a preferred aspect of the present disclosure;

[0034] - Figure 6 shows a side section view of a nozzle having an regulating device in a second position according to a preferred aspect of the present disclosure;

[0035] - Figure 7 shows a side section view of a nozzle having an regulating device in a first position according to a further aspect of the present disclosure;

[0036] - Figure 8 shows a side section view of a nozzle having an regulating device in a second position according to a further aspect of the present disclosure.

[0037] With reference to the attached figures, one form of realization of a swimming pool nozzle is indicated by the reference number 100.

[0038] The term "nozzle for swimming pool and / or fountain " means in the context of the present disclosure a nozzle disposed in the pool basin of a swimming pool and / or for a fountain, preferably in the bottom of said pool basin, for circulating water in said pool basin. Specifically, the pool and / or fountain nozzle is configured to allow circulation of a fluid, preferably water, from a pool fluid source, such as a pump, within the pool tank itself.

[0039] The nozzle 100 according to the present disclosure includes a tubular main body 10, which extends along a main development direction A of the nozzle 100 between a first end region 1 and a second end region 2 of the nozzle 100. In other words, the tubular main body 10 is a preferably cylindrical body having a through opening, parallel to the main direction of development A, connecting the first end region 1 and the second end region 2.

[0040] The tubular main body 10 defines a passageway 20 for a fluid to be distributed in a pool tank. In other words, tubular main body 10 defines such a passageway 20 that extends from the first end region 1 of nozzle 100 to the second end region 2 of nozzle 100. Even more specifically, the passageway 20 extends from an inlet opening 21 of the fluid and an outlet opening 22 of the fluid itself. Preferably, the fluid inlet opening 21 is located at the first end region 1 , while the outlet opening 22 is located at the second end region 2 of the nozzle 100. Thus, in use, a flow of fluid generated by a fluid source, such as a pool pump, passes through said inlet opening 21 , enters the nozzle passageway 20, and exits through the outlet opening 22 to be distributed into a pool and / or fountain pool.

[0041] The nozzle 100 according to the present disclosure further comprises a regulating device 30 of a fluid flow to be distributed in a pool of a swimming pool. In particular, said regulating device 30 is configured to vary a fluid flow at the outlet opening 22 of the nozzle 100 according to the fluid flow generated by the fluid source. Preferably, in other words, the regulating device 30 is configured to vary a section of the outlet opening 22 of the nozzle 100 according to the fluid flow generated by the fluid source. Consequently, the regulating device 30 is configured to equalize the flow rate of fluid flow exiting the nozzle 100 according to changes in the flow rate of the fluid source.

[0042] According to the present disclosure, the regulating device 30 is arranged in the passageway 20 of the nozzle 100, axially with respect to the main tubular body 10, along the main development direction A of the nozzle 100.

[0043] In detail, the regulating device 30 comprises a first element 31 , associated with the main tubular body 10, and a second element 32, preferably disposed at the outlet opening 22 of the nozzle 100, movably associated with the first element 31 and configured to be able to move with respect to the latter, along the main direction of development A, at least between a first position, or position of-minimum fluid flow limit, and a second position, or position of maximum fluid flow limit, depending on the fluid flow generated by the fluid source. Specifically, in the first position, or minimum flow position, a first fluid flow, or minimum fluid flow, is allowed to escape from the nozzle, while in the second position, or maximum fluid position, a second fluid flow, greater than the first fluid flow, is allowed to escape from the nozzle. For example, in the first position, or position of minimum fluid flow, a first fluid flow, preferably between 2 m3 / h and 4 m3 / h, is allowed to escape from the nozzle, while in the second position, or position of maximum fluid flow, a second fluid flow, greater than the first fluid flow, preferably greater than 4 m3 / h, for example equal to 5 m3 / h, is allowed to escape from the nozzle. Advantageously, the movement of the second element 32 of the regulating device 30 generates a change in the outlet opening 22 of the nozzle 100, in particular the section of such outlet opening 22, at least between a condition of minimum outlet opening (with reference, for example, to Figures 3 and 4), corresponding to the first position of the second element 32 with respect to the first element 31 and a condition of maximum output opening (with reference, for example, to Figures 5 and 6), corresponding to the second position of the second element 32 with respect to the first element 31 , in which, preferably, the section of the output opening 22 in the second position of the second element 32 is larger than the section of the output opening 22 in the first position of the second element 32 of the regulating device 30.

[0044] Advantageously, the first element 31 of the regulating device 30 is configured to define a sliding guide for the movement of the second element 32 of the regulating device 30 itself. In this way, essentially, the second element 32 is slidingly associated with the first element 31 of the regulating device 30.

[0045] Preferably, the second element 32 of the regulating device 30 comprises a first portion 32a extending parallel or substantially parallel to the main direction of development A of the nozzle 100, and a second portion 32b, associated with the first portion 32a, extending instead perpendicular or substantially perpendicular to the main direction of development A. Preferably, such second portion 32b is placed at the outlet opening 22 and is configured to change the cross-section of that outlet opening 22. In contrast, the first portion 32a is configured to slide relative to the first element 31 of the regulating device 30.

[0046] According to a preferred aspect of the present disclosure, in order to independently, i.e., without the intervention of a user, change the section of the outlet opening 22 of the nozzle 100, the nozzle 100 comprises elastic means 40 arranged between the first element 31 and the second element 32 of the regulating device 30. Preferably, such elastic means 40 preferably comprise a spring, preferably a linear spring. Such elastic means 40 are configured to adjust a position of the regulating device 30, in particular of the second element 32 relative to the first element 31 , according to the flow of fluid, in particular the flow rate thereof, generated by the fluid source.

[0047] Preferably, elastic means 40 can be enclosed, or housed, within an internal passageway of nozzle 100. In this way, they are not visible and / or manipulable by a user.

[0048] More specifically, preferably, the elastic means 40 comprise a main direction of development parallel, or substantially parallel, to the main direction of development A of the nozzle 100. In order to automatically, or autonomously, adjust the section of the outlet opening 22 of the nozzle 100, the elastic means 40 comprise a first end associated with the first element 31 of the regulating device 30, and a second end, opposite to the first end, associated instead with the second element 32, in particular with the first portion 32a of the second element 32.

[0049] In particular, the nozzle 100 is configured such that at the first position, or minimum flow position, of the second element 32 of the regulating device, the elastic means 40 are in a first configuration, or rest configuration, while at the second position, or maximum flow position, of the second element 32 of the regulating device 30, the elastic means are in a second configuration, or deformed configuration. Preferably, the first configuration, or rest configuration, corresponds to an extended configuration of the elastic means 40, while the second configuration, or deformed configuration, corresponds to a compressed configuration of the elastic means 40.

[0050] According to a further preferred aspect of the present disclosure, the nozzle 100 includes flow distribution means 33 within the passageway 20. In detail, preferably, the first portion 32a of the second element 32 of the regulating device 30 includes such flow distribution means 33, which are configured to allow uniform distribution of fluid flow from the inlet opening 21 within the passageway 20 of the nozzle 100.

[0051] Preferably, the flow distribution means 33 comprise a conical or pyramidal element having a first end region 33a associated with the second end region 32, particularly the first portion 32a of said second end region 32, of the regulating device 30, and a second end region 33b, opposite the first end region 33a, facing the inlet opening 21. The second end region 33b advantageously has a smaller cross section than the first end region 33a.

[0052] In addition, the nozzle 100 according to the present disclosure is configured to allow the fluid flow to escape in a 360° radial direction, orthogonal to the main direction of development of the main body of the nozzle itself.

[0053] In order to optimize such fluid flow distribution performance, particularly in terms of radial addressing and radial flow retention with respect to the nozzle 100, the main body 10 preferably includes an annular element 11 disposed at the outlet opening 22. Such an annular element 11 is configured to distribute fluid flow in a pool and / or fountain along a distribution direction perpendicular or substantially perpendicular to the main development direction A of the nozzle 100. The annular element 11 can be made of piece with the main body 10 of the nozzle 100, or, alternatively, separately, in order to be able to maximize finish variations.

[0054] More in detail, preferably, the annular element 11 has a second main development direction B, orthogonal or substantially orthogonal to the main development direction A of the nozzle 100. Further preferably, the annular element 11 extends between a first end 11a, preferably associated with the main body 10, and a second end 11 b, opposite to the first end 11a. The annular element 11 also includes a concave surface 12 extending between the first and second ends 11a, 11 b. Such a concave surface 12 is configured to generate a Coanda effect in the fluid flow exiting the nozzle 100, such that this fluid flow is directed radially to the main direction of development A of the nozzle 100 itself and remains radial to the wall of the pool and / or fountain pool on which the nozzle 100 is disposed. According to a preferred embodiment of the present disclosure, illustrated, for example, in Figures 7 and 8, the second element 32 may be of a size such that it is inserted, substantially completely, within the annular element 11. Advantageously, in this way, the second element 32 is protected from impact by users. Preferably, also in the second position, or position of maximum flow, such element 32 does not protrude vertically, or parallel to the main direction of development A, beyond the annular element 11 , in order to be further protected and not to cause damage to users in case of impacts.

[0055] In addition, preferably, according to an additional preferred aspect, element 32 may include a metal core, which increases its strength.

[0056] The subject matter of this disclosure has thus far been described with reference to its forms of realization. It is to be understood that there may be other forms of realization pertaining to the same inventive core, all of which fall within the scope of protection of the claims set forth below.

Claims

CLAIMS1 . Nozzle (100) for swimming pool and / or fountain configured to distribute a fluid flow generated by a fluid source of a pool and / or fountain into a swimming pool and / or fountain; said nozzle (100) comprising a tubular main body (10) extending along a main direction of development (A) of said nozzle (100), between a first end region (1) of said nozzle (100) and a second end region (2) of said nozzle (100) and defining a passageway (20) for a fluid to be distributed in a pool and / or fountain, said passageway (20) extending between an inlet opening (21) of said fluid and an outlet opening (22) of said fluid; said nozzle (100) comprising a regulating device (30) of a flow of a fluid to be distributed in a pool and / or fountain arranged in said passageway (20) axially with respect to said main tubular body (10), along said main direction of development (A); wherein said regulating device (30) comprises a first element (31) solidly associated with said tubular main body (10) and second element (32) movably associated with said first element (31) of said regulating device (30) so as to move with respect to said first element (31), along said main direction of development (A), at least between a first position, or position of minimum flow, and a second position, or position of maximum flow, depending on the fluid flow generated by a fluid source of a pool and / or fountain.

2. Nozzle (100) according to claim 1 , comprising elastic means (40) disposed between said first element (31) of said regulating device (30) and said second element (32) of said regulating device (30), said elastic means (40) being configured to adjust a position of said second element (32) of said regulating device (30) relative to said first element (31) of said regulating device (30) according to fluid flow generated by a fluid source of a pool and / or fountain.

3. Nozzle (100) according to claim 2, wherein said elastic means (40) comprises a spring.

4. Nozzle (100) according to claim 2 or 3, wherein said elastic means (40), in said first position, or position of minimum flow, of said second element (32) of said regulating device (30) are in a first configuration, or rest configuration; and wherein said elastic means (40), in said second position, or position of maximum flow, of said second element (32), are in a second configuration, or deformed configuration.

5. Nozzle (100) according to any one of the preceding claims, wherein said second element (32) of said regulating device (30) comprises distribution means (33) of fluid flow in said passageway (20), said distribution means (33) being arranged at said inlet opening (21) of said fluid.

6. Nozzle (100) according to any preceding claim, wherein said means for distributing (33) the fluid flow in said passageway (20) comprises a conical or pyramidalelement having a first end region (33a) associated with said second element (32) of said regulating device (30) and a second end region (33b) opposite said first end region (33a) facing said inlet opening (21) of said fluid, said second end region (33b) having a smaller cross-sectional area than said first end region (33a).

7. Nozzle (100) according to any one of the preceding claims, wherein said second element (32) of said regulating device (30) comprises a first portion (32a) extending parallel to said main direction of development (A), said first portion (32a) being associated with said elastic means (40), and a second portion (32b) associated with said first portion (32a) extending perpendicular or substantially perpendicular to said main direction of development (A).

8. Nozzle (100) according to any preceding claim, wherein said second portion (32b) of said second element (32) of said regulating device (30) is disposed at said outlet opening (22) of said fluid.

9. Nozzle (100) according to any one of the preceding claims, wherein said main body(10) comprises an annular element (11) disposed at said outlet opening (22) of said fluid, said annular element (11) being configured to distribute said fluid flow in a pool and / or fountain along a distribution direction perpendicular or substantially perpendicular to said main direction of development (A).

10. Nozzle (100) according to any preceding claim, wherein said annular element (11) has a second main direction of development (B), orthogonal or substantially orthogonal from said main direction of development (A) of said nozzle (100); said annular element (11) extending between a first end (11a) of said annular element(11) and a second end (11b), opposite said first end (11a), of said annular element (11), wherein said annular element (11) comprises a concave surface (12) extending between said first end (11a) and said second end (11b) of said annular element (11).

11. Nozzle (100) according to any one of the preceding claims, wherein said nozzle (100) is configured to allow an outflow of a fluid stream in a radial direction, orthogonal to said main direction of development (A) of said main body (10) of said nozzle (100), at 360°.

12. Nozzle (100) according to any preceding claim, wherein said outflow of a fluid stream in a radial direction orthogonal to said main direction of development (A) of said main body (10) is uninterrupted, or continuous.

13. Nozzle (100) according to any one of the preceding claims, wherein in said first position of said second element (30) a first fluid flow is allowed to escape from said nozzle (100), and wherein in said second position of said second element (30) a second fluid flow is allowed to escape from said nozzle (100).

14. Nozzle (100) according to the preceding claim, wherein said second fluid flow is greater than said first fluid flow.

15. Nozzle (100) according to claim 13 or 14, wherein said first fluid flow is between 2 m3 / h and 4 m3 / h, and wherein said second fluid flow is greater than 4 m3 / h.

Images