Spray device for spraying liquid, especially rinsing liquid

Abstract

The invention relates to a spray device (2; 2.1, 2.2, 2.3) for spraying liquid (100), in particular rinse aid, during the treatment of items to be washed in a dishwasher, in particular a commercial dishwasher, wherein the spray device (2; 2.1, 2.2, 2.3) is designed at least partially as a spray tube and wherein at least one first and at least one second liquid dispensing opening (4, 5) are formed in a wall of the area (3) designed as a spray tube, wherein a first liquid dispensing opening (4) extends in a first direction (6) and a second liquid dispensing opening (5) directly adjacent to the first liquid dispensing opening (4) extends in a second direction (7), wherein the second direction (7) is different from the first direction (6) such that the direction vectors of the first and the second direction (6, 7) intersect in a region spaced away from the outer surface (8) of the spray tube.

Description

[0001] The present invention relates generally to the field of commercial dishwashing.

[0002] According to one aspect, the invention relates in particular to a dishwasher, especially a dishwashing or utensil washing machine, which is designed in particular as a transport dishwasher, and which is characterized by a reduced fresh water consumption during operation of the machine compared to conventional dishwashers of the same type.

[0003] However, the invention is not limited to commercial dishwashers designed as transport dishwashers. In particular, it is also conceivable that the optimized spray device for spraying liquid, especially rinse aid, could be used in dishwashing or utensil washing machines designed as automatic programs, such as a hood-type dishwasher, which has a treatment chamber that can be closed with a door or hood, in which items, in particular those held in at least one dish rack, can be treated according to a pre-selected or predefined treatment program.

[0004] According to a further aspect of the invention, this relates to an optimized spray device for spraying liquid, in particular rinse aid, during the treatment of items to be washed in a dishwasher, particularly a commercial dishwasher, wherein the spray device is optimized such that the use of the spray device according to the invention effectively reduces fresh water consumption during the operation of the dishwasher. This is particularly due to the fact that the spray device is optimized in such a way that the liquid, in particular rinse aid, can be sprayed in a targeted manner and with fine droplets onto the items to be treated and, in particular, rinsed.

[0005] Commercial dishwashers include front-loading models, pass-through models, and conveyor dishwashers, while undercounter dishwashers are generally used for home use. Front-loading dishwashers are loaded with dish racks, which hold the dishes, and the racks are unloaded from the front. With pass-through dishwashers, the dish racks, loaded with dirty dishes, are manually pushed into the machine from an infeed side and manually removed from an outfeed side after the cleaning cycle is complete. Conveyor dishwashers, which are distinguished from the previously mentioned types by their high throughput of dishes per unit of time, have at least one, but usually several, cleaning zones through which the dishes are automatically transported by a conveyor system.

[0006] In each treatment zone of a conveyor dishwasher, at least one treatment cycle can be performed. In conveyor dishwashers, it is generally standard practice to clean the items of coarse soiling in a first treatment zone by rinsing with a detergent solution, while a subsequent treatment zone provides a thorough cleaning of the items by rinsing again with a detergent solution. This is followed by at least one, usually two, rinse zones in which the items are sprayed with a rinse aid solution to completely remove dirt particles and detergent solution. The final rinse cycle is generally carried out at temperatures of 80°C to approximately 85°C, usually with pure fresh water or fresh water to which a rinse aid chemical may be added, before the items are then conveyed to a drying zone.

[0007] Commercial dishwashers of the type considered here require water, detergent, rinse aid, and energy to clean and treat items. The consumption of detergent and rinse aid is proportional to the water consumption per wash cycle. With a constant water inlet temperature, this also applies to the heating energy required to warm the rinse water.

[0008] The development of dishwashers and dishwashing processes, particularly in the commercial sector, is now largely driven by the goal of saving energy and water, which is gaining increasing importance for environmental reasons. Nevertheless, especially with commercial dishwashers, throughput (the amount of dishes washed per unit of time) and dishwashing quality should not be compromised. Furthermore, the working conditions of dishwasher operators are significantly affected by escaping fumes / vapors from the dishwasher, making improvements in this area also desirable.

[0009] The invention is therefore based on the objective of providing an improved dishwasher, in particular a transport dishwasher of the generic type, which in particular - while maintaining a high washing quality - has low energy and water consumption, is sufficiently productive and can be used without hesitation from an environmental and occupational safety point of view.

[0010] The problem underlying the invention is solved in particular by a spray device according to independent claim 1, wherein advantageous further developments of the spray device according to the invention are specified in dependent claims 2 to 13.

[0011] The problem underlying the invention is further solved by a flushing system according to dependent claim 14.

[0012] The invention further relates to a dishwasher according to dependent claim 15 24.

[0013] Accordingly, the invention relates in particular to a spray device for spraying liquid, especially rinse aid liquid, during the treatment of items to be washed in a dishwasher, particularly a commercial dishwasher.

[0014] The spray device is designed, at least in part, as a spray tube, with at least one first liquid dispensing opening and at least one second liquid dispensing opening being formed in a wall of the section designed as a spray tube. The at least one first liquid dispensing opening differs from the at least one second liquid dispensing opening, in particular with regard to the direction along which liquid can be sprayed from the respective liquid dispensing openings.

[0015] According to the invention, a first liquid dispensing opening extends in a first direction and a second liquid dispensing opening directly adjacent to the first liquid dispensing opening extends in a second direction, wherein the second direction is different from the first direction in such a way that the direction vectors of the first and the second direction, hereinafter also referred to as "first direction vector" and "second direction vector", intersect in a region spaced apart from the outer surface of the spray tube.

[0016] In other words, according to the invention, it is particularly provided that spray jets are emitted via a first liquid dispensing opening and a corresponding spray jet located immediately adjacent to the second liquid dispensing opening of the spray tube, intersecting in an atomization zone spaced apart from the spray tube. This allows at least partial atomization of the spray jets emitted via the liquid dispensing openings.

[0017] The term "atomization" used herein generally refers to the breaking up of a liquid into fine drops.

[0018] Because the first and second direction vectors of the first liquid dispensing opening and the immediately adjacent second liquid dispensing opening intersect, atomization and the generation of extremely fine droplets are possible. This, in turn, leads to efficient wetting of the items being cleaned, consequently reducing the total amount of liquid sprayed per unit of time while maintaining the same cleaning quality.

[0019] According to implementations of the spray device according to the invention, it is provided that a plurality of first liquid dispensing openings and / or a plurality of second liquid dispensing openings are formed in the wall of the area designed as a spray tube, wherein the respective direction vectors of the directions with respect to which the first and / or second liquid dispensing openings are aligned lie in a common plane.

[0020] In this way, the liquid dispensing openings allow for a broad, linear application of liquid to the items being treated, along with the generation of extremely fine droplets.

[0021] In preferred embodiments of the spray device according to the invention, an angle of 40° to 80°, preferably 60° to 75° and more preferably about 70°, is provided between the second direction vector and a line intersecting the second liquid dispensing opening and / or the first liquid dispensing opening immediately adjacent to the second liquid dispensing opening and perpendicular to the outer surface of the area designed as a spray tube.

[0022] With these angle values, particularly efficient application of water to the items being treated is possible even in areas that are inaccessible, for example due to water shadows.

[0023] Of course, other angle ranges are also conceivable.

[0024] According to preferred embodiments of the spray device according to the invention, a plurality of first liquid dispensing openings are arranged side by side along a row, wherein a second liquid dispensing opening is provided immediately adjacent to a first and / or last liquid dispensing opening of the area designed as a spray tube.

[0025] In this design variant, liquid atomization is achieved only with the help of the outermost liquid dispensing openings.

[0026] This design variant is particularly distinguished by the fact that the liquid dispensed per unit of time from the outermost liquid outlets is directed inwards from the side wall of the dishwasher's treatment chamber or treatment zone towards the center of the chamber or treatment zone. This ensures the most efficient use of the liquid dispensed per unit of time via the outer outlets, resulting in further savings in fresh water consumption.

[0027] In particular, the spray device according to the invention provides that the at least one first liquid dispensing opening is formed in the wall of the area designed as a spray tube in such a way that the first direction in which the first liquid dispensing opening extends is at least substantially orthogonal to the outer surface of the spray tube.

[0028] In other words, the first liquid dispensing opening is oriented in the same way as conventional spray tubes known from the prior art, especially for commercial dishwashers.

[0029] In principle, all liquid dispensing openings, at least of the area of ​​the spray device designed as a spray tube, should be formed along a straight line in the wall of the area designed as a spray tube in order to enable a broad and linear application of the washable material.

[0030] According to preferred embodiments of the spray device according to the invention, the at least one second liquid dispensing opening is formed in a recessed area in the wall of the spray tube. This recessed area can be easily formed into the wall of the spray tube by forming it, provided the spray tube is made of metal (sheet metal).

[0031] In this context, it is advantageous for the recessed area to have at least one wall section that slopes downwards with respect to the longitudinal direction of the area designed as a spray tube, with at least one second liquid dispensing opening being formed in this sloping wall section. The alignment and deflection of the second liquid dispensing opening can thus be adjusted via this sloping wall section.

[0032] According to implementations, particularly of the last-mentioned embodiment, it is provided that in a top view of the recessed area in the wall of the spray tube, the recessed area is formed at least approximately in a droplet shape in the form of a sphere tapering at one end, wherein the second liquid dispensing opening is formed in the tapered area of ​​the at least approximately droplet-shaped area.

[0033] This design has the advantage that - although the second liquid dispensing opening is formed in a recessed area in the wall of the spray tube - the liquid jet can be sprayed without obstruction or deflection by wall parts of the spray tube.

[0034] To dispense a sufficient quantity of liquid per unit of time from each liquid dispensing orifice, the liquid dispensing orifices should each have a diameter between 5.0 mm and 15.0 mm, preferably between 8.0 mm and 12.0 mm, and even more preferably between 9.0 mm and 11.0 mm. Of course, other dimensions are also possible.

[0035] In principle, it is conceivable that the liquid dispensing openings are incorporated into the wall of the area designed as a spray tube in such a way that a nozzle effect is already achieved through the shape of the liquid dispensing openings.

[0036] However, it is advantageous that replaceable nozzles are used. For this purpose, according to embodiments of the invention, it is provided that a nozzle insert, preferably interchangeable or replaceable, is received in each liquid dispensing opening formed in the wall of the area designed as a spray tube.

[0037] In this context, nozzle inserts made of a soft elastic material are a good option, as they allow for relatively easy replacement of the nozzle inserts by utilizing the elastic properties of the material, since the nozzle inserts only need to be pressed into the liquid dispensing opening of the spray tube.

[0038] However, nozzle inserts made of a different material are also conceivable, since the soft, elastic design of the nozzle inserts may also lead to them wearing out relatively quickly and needing to be replaced frequently in order to guarantee the most even distribution of the liquid to be sprayed.

[0039] The nozzle inserts included in the liquid dispensing openings are designed and positioned in the liquid dispensing openings in such a way that the nozzle inserts included in the liquid dispensing openings provide a linear application of liquid to the item being treated.

[0040] For this purpose, it is advisable, for example, that the nozzle insert be designed as a flat jet nozzle insert and, in particular, as a slot nozzle insert.

[0041] In order to enable the widest possible spread of the nozzle inserts received by the preferably lateral second liquid dispensing openings, these should preferably be designed in such a way that they allow a spray angle of at least 60°, preferably at least 70° and even more preferably about 80°.

[0042] The section of the spray device designed as a spray tube is preferably designed to be at least essentially straight.

[0043] In this context in particular, it is advantageous for the spray device to have at least one pipe section or pipe segment which is designed and constructed without liquid dispensing openings, preferably detachably connected to the area designed as a spray pipe (which has corresponding liquid dispensing openings) in terms of flow.

[0044] The at least one pipe section can be connected to the section designed as a spray pipe, for example, via an angled section or angled segment. In this way, it is conceivable, for instance, to spray the items being washed in a dishwasher's rinse zone with rinse fluid from the side, but also from above and / or below, whereby – viewed in the direction of transport of the items being washed – the corresponding sections designed as spray pipes are arranged offset from one another.

[0045] Due to the efficient atomization and the achievable broad, linear application of the wash items using the spray device according to the invention, it is possible for the spray device to be arranged in a fixed position – with regard to a machine frame of the dishwasher, in particular a commercial dishwasher.

[0046] According to one aspect of the invention, the dishwasher, particularly for commercial use, is designed as a transport dishwasher, which has several treatment zones connected in series and a transport device with which the items to be treated in the treatment zones of the transport dishwasher can be transported through the treatment zones in one transport direction.

[0047] In this context, it is particularly advantageous that the spray device according to the invention is provided at least partially or in certain areas in at least one treatment zone in such a way that the liquid to be released or released by the spray device is released or can be released at least substantially in a linear fashion perpendicular to or at least substantially perpendicular to the transport direction.

[0048] According to embodiments of the spray device according to the invention, it is provided that the device has an inlet through which the liquid to be sprayed can be supplied to the area of ​​the spray device designed as a spray tube, wherein the spray device has an outlet opposite it – in the flow direction of the liquid supplied to the area designed as a spray tube – which is sealed or sealable in a fluid-tight manner by means of a preferably removable plug. The use of a removable plug allows, for example, the spray device to be flushed with liquid for the purpose of cleaning or maintenance.

[0049] The invention further relates to a dishwasher, which is particularly designed as a commercial dishwasher and has at least one treatment chamber or treatment zone in which items to be washed can be treated, wherein in the at least one treatment chamber or treatment zone of the dishwasher a washing or rinsing system with a spray device of the aforementioned type according to the invention is provided at least partially or in certain areas.

[0050] In this context, it is advantageous for the commercial dishwasher to be designed as a transport dishwasher, which has several treatment zones connected in series and a transport device.

[0051] An exemplary embodiment of the invention is described in more detail below with reference to the accompanying drawings.

[0052] They show: FIG. 1 schematically shows an exemplary embodiment of the spray system according to the invention, which has three pneumatically interconnected spray devices of the type according to the invention; FIG. 2 schematically shows the spray pattern resulting from the second (outer) liquid dispensing openings of the lower spray device of the spray system according to FIG. 1 results; FIG. 3 schematically and in an isometric view the spray system according to FIG. 1 upper spray device in use; FIG. 4 schematically and in a side view the spray device according to FIG. 3 ; FIG. 5 schematically and in a side view the spraying device according to FIG. 3 ; FIG. 6 schematically and in an isometric exploded view of the spray system according to FIG. 1 The side spray device used, via which the lower spray device is directed according to FIG. 3 with the upper spray device according to FIG. 8 pneumatically connected; FIG. 7 schematically and in a side view the spraying device according to FIG. 6 ; FIG. 8 schematically and in an isometric view the upper spray device of the spray system according to FIG. 1 ; and FIG. 9 schematically and in a side view the spraying device according to FIG. 8 .

[0053] The in FIG. 1 The schematically shown spray system 1 is particularly suitable for use in a rinsing zone, especially a rinse zone, of a conveyor dishwasher and serves to spray liquid 100, especially rinse liquid, during the treatment of items to be washed in the dishwasher.

[0054] The spray system 1 has several pneumatically interconnected spray devices 2; 2.1, 2.2, 2.3.

[0055] This includes in particular a lower spray device 2; 2.1, which is described in detail in FIG. 3 bis FIG. 5 As shown, a lateral spray device 2; 2.2, which is particularly in FIG. 6 and FIG. 7 shown, as well as an upper spray device 2; 2.3, which is in FIG. 8 and FIG. 9 shown.

[0056] Additionally, the representation in FIG. 1 It can be seen that the exemplary embodiment of the spray system shown there has a further lateral spray arm, which, however, is designed here as a conventional spray device.

[0057] One such conventional spraying device is described, for example, in DE 10 2004 030 010 A1 (see FIG. 7 the DE 10 2004 030 010 A1) known.

[0058] Overall, the in FIG. 1 The schematically shown spray system 1 has an essentially frame-shaped configuration with which the rinsing material transported through this frame-shaped construction can be supplied with liquid 100, in particular rinsing liquid, from all sides.

[0059] The spray devices 2; 2.1, 2.2, 2.3 according to the invention, which are used in the spray system 1 according to FIG. 1 The first and second liquid dispensing openings, each 4 and 5, are used.

[0060] The first liquid dispensing openings 4 are configured in the wall 8 of a section 3 of the spray device 2; 2.1, 2.2, 2.3, which is designed as a spray tube, such that the first liquid dispensing openings 4 extend in a first direction 6. This direction is at least substantially orthogonal to the outer surface 8 of the spray tube 3.

[0061] Each spray device 2 according to the invention; 2.1, 2.2, 2.3 of the spray system 1 according to FIG. 1 It also features lateral second liquid dispensing openings 5.

[0062] The second liquid discharge openings 5 ​​extend in a second direction 7, which is different from the first direction 6. It is provided that the direction vectors of the first and second directions 6, 7 intersect in a region spaced apart from the lateral surface 8 of the spray tube 3.

[0063] In other words, and as the spray pattern in particular indicates FIG. 2 The lateral second liquid discharge openings 5 ​​are arranged at an angle such that the liquid jet discharged from the second liquid discharge openings 5 ​​is directed towards the center of the area supplied by the flushing system 1 according to FIG. 1 are inclined to at least partially enclosed areas.

[0064] The representation, for example, in FIG. 3 bis FIG. 5 It can be seen that at least in the lower spray device 2; 2.1 a plurality of first liquid dispensing openings 4 are provided, wherein the first liquid dispensing openings 4 are arranged side by side along a row.

[0065] In the outer area of ​​the spray tube section 3 of the spray device 2; 2.1, a second liquid dispensing opening 5 is provided. The second liquid dispensing openings 5 ​​are also arranged along the row along which the first liquid dispensing openings 4 are arranged side by side.

[0066] Furthermore, the representations are particularly evident in FIG. 3 bis FIG. 5 It can be seen that in the spray device 2; 2.1 shown there, the second liquid dispensing openings 5 ​​are each formed in a recessed area 9 in the wall 8 of the spray tube.

[0067] The FIG. 4 It can be seen that the recessed area 9 has a wall area 10 that runs at an angle with respect to the longitudinal direction of the area 3 designed as a spray tube, wherein the respective second liquid discharge openings 5 ​​are formed in the angled wall area 10 of each recessed area 9.

[0068] According to the top view FIG. 5 It can be seen that in a top view of the recessed area 9 in the wall 8 of the spray tube 3, the recessed area 9 is formed at least approximately in a droplet shape in the form of a sphere tapering at one end, with the second liquid discharge opening 5 being formed in the tapered area of ​​the at least approximately droplet-shaped area.

[0069] In detail, the side view is as follows FIG. 4 It can be seen that the recessed area 9 in the wall 8 of the spray tube 3 has a first side surface 10 which runs obliquely inwards with respect to the outer surface 8 of the area 3 designed as a spray tube, and a second side surface 11 which is shorter than the first side surface 10 and connects an end area of ​​the first side surface 10 with the outer surface 8 of the area 3 designed as a spray tube.

[0070] The second liquid discharge opening 5 is formed in the first side surface 10 of each recessed area 9 in the wall 8 of the spray tube 3.

[0071] The isometric exploded view according to FIG. 6 It can be deduced that each liquid discharge opening 4, 5 formed in the wall 8 of the area 3 designed as a spray tube has a nozzle insert 12 preferably interchangeable or replaceable.

[0072] The nozzle insert 12 can, in particular, be pressed at least partially or in sections into the corresponding liquid dispensing opening.

[0073] The nozzle inserts 12 received in the liquid dispensing openings 4, 5 of each spray device 2; 2.1, 2.2, 2.3 are in particular designed and received in the liquid dispensing openings 4, 5 in such a way that the nozzle inserts 12 received in the liquid dispensing openings 4, 5 provide a linear application of liquid to the item to be treated.

[0074] In this case, it is advantageous for the nozzle insert 12 to be designed as a flat jet nozzle insert 12 and, in particular, as a slot nozzle insert.

[0075] According to the spray pattern FIG. 2 It can be deduced that at least the nozzle insert 12 received in each of the second liquid dispensing openings 5 ​​is designed to enable a spray angle of preferably about 80°.

[0076] The side and top spray device 2; 2.2, 2.3 according to FIG. 6 and FIG. 7 or FIG. 8 and FIG. 9 differ from the lower spray device 2; 2.1 according to FIG. 3 bis FIG. 5 in particular by the fact that in these spray devices 2; 2.2, 2.3 at least one pipe section 13 is used which is connected to the section 3 designed as a spray pipe via an angle section or angle segment 14.

[0077] The invention is not limited to the exemplary embodiment shown in the drawings, but results from a combination of all the features disclosed herein. Bezugszeichenliste

[0078] 1 Spray system 2; 2.1, 2.2, 2.3 Spray device 3 Area designed as spray tube / spray tube 4 First liquid dispensing opening 5 Second liquid dispensing opening 6 First direction vector / first direction 7 Second direction vector / second direction 8 Outer surface / wall of the area designed as a spray tube / of the spray tube 9 Recessed area 10 First side surface of the recessed area 11 Second side surface of the recessed area 12 Nozzle insert 13 Tube area 14 Angled area 15 Plug 16 Connection area 100 Liquid 100

Claims

1. Spray device (2; 2.1, 2.2, 2.3) for spraying liquid (100), in particular rinse aid liquid, during the treatment of wash ware in a dishwasher, in particular a commercial one, wherein the spray device (2; 2.1, 2.2, 2.3) is designed as a spray tube at least in part, and wherein at least one first and at least one second liquid dispensing opening (4, 5) are formed in a wall of the region (3) designed as a spray tube, wherein a first liquid dispensing opening (4) extends in a first direction (6) and a second liquid dispensing opening (5) directly adjacent to the first liquid dispensing opening (4) extends in a second direction (7), wherein the second direction (7) is different from the first direction (6) in such a way that the direction vectors of the first and second directions (6, 7) intersect in a region spaced from the lateral surface (8) of the spray tube.

2. Spray device (2; 2.1, 2.2, 2.3) according to claim 1, wherein a plurality of first liquid discharge openings (4) and / or a plurality of second liquid discharge openings (5) are formed in the wall of the region (3) designed as a spray tube, wherein the respective directional vectors of the directions (6, 7) with respect to which the first and / or second liquid discharge openings (4, 5) are aligned lie in a common plane, wherein an angle spanned between the second directional vector (7) and a line intersecting the second liquid discharge opening (5) and / or the first liquid discharge opening (4) immediately adjacent to the second liquid discharge opening (5) and perpendicular to the lateral surface (8) of the region (3) designed as a spray tube is preferably 40° to 80°, preferably 60° to 75°, and more preferably approximately 70°.

3. Spray device (2; 2.1, 2.2, 2.3) according to claim 1 or 2, wherein a plurality of first liquid discharge openings (4) are arranged next to one another along a row, and wherein a second liquid discharge opening (5) is provided immediately adjacent to a first and / or last first liquid discharge opening (4) in the row of the region (3) designed as a spray tube.

4. Spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 3, wherein the at least one first liquid discharge opening (4) is formed in the wall of the region (3) designed as a spray tube in such a way that the first direction (6) with respect to which the first liquid discharge opening (4) extends runs at least substantially orthogonal to the outer surface (8) of the spray tube.

5. Spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 4, wherein the liquid discharge openings (4, 5) are formed along a straight line in the wall of the area (3) designed as a spray tube.

6. Spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 5, wherein the at least one second liquid discharge opening (5) is formed in a recessed region (9) formed in the wall of the spray tube.

7. Spray device (2; 2.1, 2.2, 2.3) according to claim 6, wherein the recessed region (9) has at least one wall region (10) that runs obliquely with respect to the longitudinal direction of the region (3) designed as a spray tube, wherein the at least one second liquid discharge opening (5) is formed in the obliquely running wall region (10); and or wherein, in a plan view of the recessed region (9) designed in the wall of the spray tube, the recessed region (9) is designed at least approximately drop-shaped in the form of a sphere tapering at one end, wherein the second liquid discharge opening (5) is formed in the region of the at least approximately drop-shaped region that tapers at one end.and / or wherein, in a cross-sectional view, the recessed region (9) formed in the wall of the spray tube has a first side surface (10) which runs obliquely inwards with respect to the outer surface (8) of the region (3) formed as a spray tube, and a second side surface (11) which is shorter than the first side surface (10) and connects an end region of the first side surface (10) to the outer surface (8) of the region (3) formed as a spray tube, wherein the second liquid discharge opening (5) is formed in the first side surface (10); 8. Spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 7, wherein the liquid discharge openings (4, 5) each have a diameter between 5.0 mm and 15.0 mm and preferably between 8.0 mm and 12.0 mm and more preferably between 9.0 mm and 11.0 mm.

9. Spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 8, wherein a nozzle insert (12) is preferably received in a replaceable or interchangeable manner by preferably each liquid discharge opening (4, 5) formed in the wall (8) of the region (3) designed as a spray tube.

10. Spray device (2; 2.1, 2.2, 2.3) according to claim 9, wherein the nozzle insert (12) is pressed at least partially or regionally into the corresponding liquid discharge opening (4, 5); and / or wherein the nozzle inserts (12) received in the liquid discharge openings (4, 5) are designed and received in the liquid discharge openings (4, 5) in such a way that, with the aid of the nozzle inserts (12) received in the liquid discharge openings (4, 5), an overall at least substantially linear liquid impingement on the items to be treated occurs; and / or wherein the nozzle insert (12) is designed as a flat jet nozzle insert and in particular as a slot nozzle insert; and / or wherein at least the nozzle insert (12) accommodated in the at least one second liquid discharge opening (5) is designed to enable a jet angle of at least 60°, preferably of at least 70° and more preferably of approximately 80°.

11. Spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 10, wherein the region (3) designed as a spray tube is at least substantially rectilinear.

12. Spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 11, wherein the spray device (2; 2.1, 2.2, 2.3) has at least one tube region or tube section (13) which is designed without liquid discharge openings (4, 5) and is designed to be / to be fluidly connected, preferably detachably, to the region (3) designed as a spray tube, wherein the at least one tube region or tube section (13) is preferably connected to the region (3) designed as a spray tube via an angle region or angle section (14).

13. Spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 12, wherein the spray device (2; 2.1, 2.2, 2.3) is arranged in a stationary manner with respect to a machine frame of the dishwasher, in particular a commercial dishwasher; and / or wherein the dishwasher, in particular a commercial dishwasher, is designed as a conveyor dishwasher which has a plurality of treatment zones connected in series one after the other and a transport device with which the items to be treated in the treatment zones of the conveyor dishwasher can be transported through the treatment zones in a transport direction, wherein the spray device (2; 2.1, 2.2, 2.3) is provided at least partially or regionally in at least one treatment zone in such a way that the spray device (2; 2.1, 2.2, 2.3) the liquid (100) to be dispensed or already dispensed is or can be dispensed at least substantially linearly perpendicularly or at least substantially perpendicularly to the transport direction; and / or wherein the spray device (2; 2.1, 2.2, 2.3) has an inlet via which the liquid (100) to be sprayed can be fed to the region (3) of the spray device (2; 2.1, 2.2, 2.3) designed as a spray tube, and wherein the spray device (2; 2.1, 2.2, 2.3) has an outlet located opposite it in the flow direction of the liquid (100) supplied to the region (3) designed as a spray tube, which outlet is or can be closed in a fluid-tight manner by means of a preferably removable plug (15).

14. Spray system (1) for spraying liquid (100), in particular rinse aid liquid, during the treatment of wash ware in a dishwasher, in particular a commercial one, wherein the spray system (1) has a plurality of spray devices (2; 2.1, 2.2, 2.3) according to one of claims 1 to 13, wherein the respective regions (3) of the spray devices (2; 2.1, 2.2, 2.3) designed as a spray tube are in fluid communication with one another via at least one connecting region (16), in particular of an angular design.

15. Dishwasher, which is designed in particular as a commercial dishwasher and has at least one treatment chamber or treatment zone in which wash ware can be treated, wherein in the at least one treatment chamber or treatment zone of the dishwasher, at least partially or regionally, a wash or final rinse system with at least one spray device (2; 2.1, 2.2, 2.3) according to one of claims 1 to 13 or with a spray system (1) according to claim 14 is provided, wherein the dishwasher, in particular a commercial dishwasher, is preferably designed as a conveyor dishwasher, which has a plurality of treatment zones connected in series one behind the other and a transport device with which the wash ware to be treated in the treatment zones of the conveyor dishwasher can be transported through the treatment zones in a transport direction, wherein the spray device (2; 2.1, 2.2, 2.3) is provided at least partially or regionally in at least one treatment zone such that the liquid (100) to be dispensed or dispensed by the spray device (2; 2.1, 2.2, 2.3) is dispensed or can be dispensed at least substantially linearly perpendicularly or at least substantially perpendicularly to the transport direction.

Images