INSECT NETTING FOR A GREENHOUSE

Abstract

An insect netting for a greenhouse includes a front panel merging into two side panels. The insect netting is pleated having bellow sections. Each bellow section has two parallel side bellow portions and a front bellow portion. Each side bellow portion comprises a first side gauze web and a second side gauze web connected to each other at a longitudinal side thereof, each having a first short side and a second short side. Each of the front bellow portions comprises a first front gauze web and a second front gauze web connected to each other along a longitudinal side thereof. The second short side of the first and second side gauze webs of the side bellow portions is connected to the longitudinal side of the first and second front gauze webs facing towards the hinging axis of the ventilation panel, respectively.

Claims

1. An insect netting for a greenhouse, wherein the insect netting is configured to be secured to a ventilation panel that is hingeable around a hinging axis, wherein in an open position of the ventilation panel, the insect netting is configured to at least extend between an opening edge extending parallel to the hinging axis of the ventilation panel, and a ventilation panel edge extending parallel to the hinging axis of the ventilation panel, the insect netting comprising a front panel merging into two side panels, wherein the insect netting is pleated in a bellow configuration to collapse in a stacked manner, wherein the bellow configuration is formed with bellow sections, wherein each of the bellow sections has two parallel side bellow portions and a front bellow portion, wherein each of the side bellow portions comprises a first side gauze web and a second side gauze web connected to each other at a longitudinal side thereof and each having a first short side configured for facing towards the hinging axis, and a second short side, opposite to the first short side, configured for facing away from the hinging axis, wherein each of the front bellow portions comprises a first front gauze web and a second front gauze web connected to each other along a longitudinal side thereof, and wherein the second short side of the first and second side gauze webs of the side bellow portions is connected to the longitudinal side of the first and second front gauze webs facing towards the hinging axis of the ventilation panel, respectively.

2. The insect netting according to claim 1, wherein each of the first and second front gauze webs has a first web end and a second web end, opposite to the first web end in the longitudinal direction thereof, wherein the second short side of the first and second side gauze webs of the side bellow portions is connected to the longitudinal side of the first and second front gauze webs facing towards the hinging axis of the ventilation panel, respectively, at or near the first or second web end thereof.

3. The insect netting according to claim 2, wherein the first and second front gauze webs are connected to each other at the first and second web ends thereof.

4. The insect netting according to claim 1, wherein the second short side of the first and second side gauze webs of the side bellow portions is fused to the longitudinal side of the first and second front gauze webs facing towards the hinging axis of the ventilation panel, respectively.

5. The insect netting according to claim 1, wherein the second short side of the first and second side gauze webs of the side bellow portions is welded to the longitudinal side of the first and second front gauze webs facing towards the hinging axis of the ventilation panel, respectively.

6. The insect netting according to claim 1, wherein the second short side of the first and second side gauze webs of the side bellow portions is stitched to the longitudinal side of the first and second front gauze webs facing towards the hinging axis of the ventilation panel, respectively.

7. The insect netting according to claim 1, wherein the longitudinal side of the first and second front gauze webs facing away from the hinging axis, is spaced apart from the first and second web end of the first and second side gauze webs, respectively.

8. The insect netting according to claim 1, wherein the longitudinal side of the first and second front gauze webs facing away from the hinging axis is free from the first and second side gauze webs.

9. The insect netting according to claim 1, wherein the gauze webs of the web sections are connected to each other at a first longitudinal side thereof, and wherein the web sections are connected to each other at a second longitudinal side, opposite to the first longitudinal side, of the gauze webs.

10. The insect netting according to claim 1, wherein the gauze webs comprise a woven textile with warp threads and crossing weft threads that alternatingly go over and under the consecutive warp threads, wherein the warp threads and the weft threads each comprise at least one strand.

11. The insect netting according to claim 10, wherein the strand is formed with a plastic resin or fiberglass.

12. The Insect netting according to claim 11, wherein the plastic resin is a polyolefin.

13. The insect netting according to claim 11, wherein the plastic resin is polyethylene, polypropylene or polyester.

14. The insect netting according to claim 1, wherein at least one of the side panels has a substantially triangular shape, when the ventilation panel is in the open position.

15. The insect netting according to claim 14, wherein mating ends of a pair of bellow sections facing away from the front panel are located further away from the front panel than mating ends of a further pair of bellow sections facing away from the front panel, wherein the further pair of bellow sections is located between the pair of bellow sections.

16. The insect netting according to claim 1, wherein the side panels comprise an outermost bellow section and multiple intermediate bellow sections that are connected to each other along longitudinal inner edges of their gauze webs, wherein the bellow sections all have their front side merging into the front panel, wherein of each intermediate bellow section the gauze webs are connected to each other at the opposite back end, wherein the opposite back end of the outermost bellow section is configured to be located at or close to the hinging axis, and wherein the back ends of consecutive intermediate bellow sections are adjacent to and spread along the outermost bellow section.

17. A netting system for a greenhouse having a ventilation panel that hingeable round axis, wherein the netting system comprises: a framework configured for use with the ventilation panel; and an insect netting joined to the framework, wherein in an open position of the ventilation panel, the insect netting is configured to at least extend between an opening edge extending parallel to the hinging axis of the ventilation panel, and a ventilation panel edge extending parallel to the hinging axis of the ventilation panel, the insect netting comprising: a front panel merging into two side panels, wherein the insect netting is pleated in a bellow configuration to collapse stacked manner, wherein the bellow configuration is formed with bellow sections, wherein each of the b ow sections has two parallel side bellow portions and a front bell w portion, wherein each of the side bellow portions comprises a first side gauze web and a second side gauze web connected to each other at a longitudinal side thereof and each having a first short side configured for facing towards the hinging axis, and a second short side, opposite to the first web end, configured for facing away from the hinging axis, wherein each of the front bellow portions comprises a first front gauze web and a second front gauze web connected to each other on a longitudinal thereof, and wherein the second short side of the first and second side gauze webs of the side bellow portions is connected to the longitudinal side of the first and second front gauze webs facing towards the hinging axis of the ventilation panel, respectively.

18. The netting system according to 17, wherein the insect netting is secured to the framework by stitching.

19. A greenhouse, wherein the greenhouse comprises a roof construction having a slanting upper surface with an opening and a rectangular glass panel that covers the opening, wherein at its upper edge the glass panel is hingeably connected with a part of the roof construction to hinge around a hinging axis between a closed position in which the glass panel extends substantially parallel to the upper surface and an open position in which the glass panel is oriented oblique with respect to the upper surface to form a ventilation passage, wherein the greenhouse further comprises an insect netting according to claim 1.

20. A method for manufacturing bellow sections for an insect netting, wherein the insect netting is configured to be secured to a ventilation panel that is hingeable around a hinging axis, the method comprising: providing two or more front gauze webs and two or more side gauze webs each side gauze web having a first short side configured for facing towards the hinging axis, and a second short side, opposite to the first short side, configured for facing away from the hinging axis; connecting two side gauze webs to each other along a longitudinal side thereof; connecting two front gauze webs to each other along a longitudinal side thereof; and securing the two connected side gauze webs to the two connected front gauze webs by arranging and connecting the second short side of the side gauze webs at and to the longitudinal side of the front gauze webs that is configured to face towards the hinging axis of the ventilation panel during use.

21. The method according to claim 20, wherein the side gauze webs are connected to the front gauze webs by means of welding, fusing or stitching.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The invention will be elucidated on the basis of an exemplary embodiment shown in the attached drawings, in which:

[0043] FIG. 1 is an isometric view of a greenhouse with a roof construction having glass panels with a netting system having an insect netting;

[0044] FIG. 2 is an isometric view of one of the glass panels with the netting system having a front panel of FIG. 1;

[0045] FIG. 3 is a more detailed view of the insect netting of the netting system of FIG. 2;

[0046] FIG. 4 shows a detail of the insect netting of FIG. 3 according to prior art;

[0047] FIG. 5 shows a detail of the insect netting of FIG. 3 according to an embodiment of the invention;

[0048] FIG. 6 shows a front view in a direction perpendicular to the front panel of the glass panel of FIG. 2 with a netting system according to an embodiment of the invention; and

[0049] FIG. 7 shows a front view in a direction perpendicular to the front panel of the glass panel of FIG. 2 with a netting system according to the prior art.

DETAILED DESCRIPTION OF THE INVENTION

[0050] A greenhouse 1 of the Venlo type is shown in FIGS. 1 and 2. The greenhouse 1 comprises multiple rows of vertical columns 2 for supporting a roof construction 3. The roof construction 3 includes a framework with multiple parallel roof ridge profiles 4 and lower rain gutter profiles 5. Adjacent roof ridge profiles 4 and rain gutter profiles 5 are connected to each other by means of slanting window profiles 6. The roof ridge profiles 4, the rain gutter profiles 5 and the window profiles 6 are made of a metal, in particular aluminum, and form rectangular rabbets for fixed glass panels 7.

[0051] The roof construction 3 further includes a number of regularly distributed glass panels 8, such as tempered glass panels 8, also called ventilation panels. Each of the glass panels 8 is hingeably connected to the adjacent roof ridge profile 4 at the upper side thereof. The glass panels 8 are transparent in order to allow light to enter the greenhouse 1. As shown in FIG. 2, the glass panels 8 are shorter than the fixed glass panels 7. A horizontal window profile 9 is provided between two adjacent slanting window profiles 6 in order to form a rabbet for an additional, smaller glass panel 10 below the glass panel 8.

[0052] As shown in FIG. 2, the glass panel 8 is configured to hinge around the hinge axis B between the shown open position and a closed position in order to regulate the ventilation of the greenhouse 1. The greenhouse 1 is provided with pushing rods 11 connected to distributed connections 12 within the tempered glass panel 8, which pushing rods 11 are coupled to a slide 13 that my move along a horizontal rail 14 by means of an electromotor, in order to move the tempered glass panel 8 into the open or closed position thereof.

[0053] Each of the glass panels 8 is provided with a netting system 20 to prevent passage of insects when the glass panel 8 is in the open position. These can be harmful insects that have to be kept outside the greenhouse 1 or specific insects that are held inside the greenhouse 1. The netting system 20 comprises a framework 21 arranged along the free edges of the glass panel 8, and an insect netting 22 of fine mesh gauze. When the glass panel 8 is in the closed position, the framework 21 rests on the horizontal window profile 9 and the adjacent slanting window profiles 6. The insect netting is pleated in a bellow configuration in order to stack when it collapses. The insect netting 22 is connected with the framework 21 at the upper side thereof, for example by stitching the insect netting 22 to a non-shown stitching web that is oriented downwards from the framework 21. The stitching web may be manufactured from rubber, EPDM or the like, and at the lower side the insect netting 22 is connected to the corresponding horizontal window profile 6 and the slanting window profiles 6 along the ventilation opening.

[0054] The insect netting 22, without the framework 21, is shown in FIG. 3. The insect netting 22 comprises a front panel 23 and two parallel side panels 24. The two parallel side panels 24 merge into the front panel 23 at a straight corner 25. When the insect netting 22 is arranged at a glass panel 8, the two parallel side panels 24 extend substantially transverse or transverse to the hinging axis B of the respective glass panel 8.

[0055] As shown in FIG. 3, the two parallel side panels 24 and the front panel 23 comprise a number of bellow sections 26 arranged above each other in order to form the pleated configuration of the insect netting. Each bellow section 26 has two parallel side bellow portions 27 and a front bellow portion 28. Each of the two parallel side bellow portions 27 has a first side gauze web 29 with a first longitudinal side 30 and a second longitudinal side 31, opposite to the first longitudinal side 30, and a second side gauze web 32 also with a first longitudinal side 30 and a second longitudinal side 31, opposite to the first longitudinal side 30. The first and second side gauze webs 29, 32 are connected to each other along the second longitudinal side 31 thereof, for example by means of stitching. Furthermore, each of the first and second side gauze webs 29, 32 comprises a first web end 33, also called first short site, facing towards the hinging axis B of the glass panel 8, and a second web end 34, also called second short side, facing away from the hinging axis B of the glass panel 8 and towards the front panel 23.

[0056] Each of the front bellow portions 28 has a first front gauze web 35 with a first longitudinal side 36 and a second longitudinal side 37, opposite to the first longitudinal side 36, and a second front gauze web 38 also with a first longitudinal side 36 and a second longitudinal side 37, opposite to the first longitudinal side 36. The first and second front gauze webs 35, 38 are connected to each other along the second longitudinal side 37 thereof, for example by means of stitching. Furthermore, each of the first and second front gauze webs 35, 37 comprises a first web end 39, facing one of the two parallel side panels 24, and a second web end 40, facing towards the other one of the two parallel side panels 24.

[0057] The front bellow portions 26 and the two side bellow portions 27 are connected to each other by connecting the first side gauze web 29 of the side bellow portions 27 to the first front gauze web 35 of the front bellow portions 26, and by connecting the second side gauze web 32 of the side bellow portions 27 to the second front gauze web H the front bellow portions 26, as elucidated in more detail in relation to FIGS. 4 and 5.

[0058] In FIG. 4, it is shown how the side gauze webs 29, 32 of the side bellow portions 27 are connected to the front gauze webs 35, 38 of the front bellow portions 26 according to the prior art. As shown in FIG. 4, the second web end 34, or the second short side, of the side gauze webs 29, 32 of the side bellow portions 27 is placed on top of the second web end 40 of the front gauze webs 35, 38, or the second web end 40 of the front gauze webs 35, 38 is placed on top of the second web end 34 of the side bellow portions 27, therewith realizing an overlapping area 45. As clearly shown, the second web end 34, or the second short side of the side gauze webs 29, 32 is located on or at the second longitudinal side 37 of the front gauze webs 35, 38, i.e. the longitudinal side of the front gauze webs facing away from the hinging axis B of the glass panel 8. The same is applicable to the first web end 39 of the front gauze webs 35, 38. Subsequently, the side gauze webs 29, 32 are stitched to the front gauze webs 35, 38 by means of stitchings 46 along the outer edges of the overlapping area 45.

[0059] In FIG. 5, it is shown how the side gauze webs 29, 32 of the side bellow portions 27 are connected to the front gauze webs 35, 38 of the front bellow portions 26 according to an embodiment of the invention. As is clearly shown in FIG. 5, the second web end 34, or the second short side, of the side gauze webs 29, 32 of the side bellow portions 27 is connected to the first longitudinal side 36 of the front gauze webs 35, 38, i.e. the longitudinal side of the front gauze webs 35, 38 facing towards the hinging axis B of the glass panel 8, at or near the second web end 40 of the front gauze webs 35, 38. In particular, the second web end 34 of the side gauze webs 29, 32 of the side bellow portions 27 is spaced apart from the second longitudinal side 37 of the of the front gauze webs 35, 38, i.e. the longitudinal side of the front gauze webs 35, 38 facing away from the hinging axis B of the glass panel 8. The side gauze webs 29, are 32 interconnected to the front gauze webs 35, 38 by means of welding, therewith forming a welding area 47. As clearly shown in FIG. 5, the first and second web ends 39, 40 of the front gauze webs 35, 38 are connected to each other, for example by means of welding, in order to form front bellow section 28 with closed ends.

[0060] Due to the side gauze webs 29, 32 and the front gauze webs 35, 38 being interconnected by means of welding, the thickness of the bellow sections 26 at the merger of the side bellow portions 27 into the front bellow portion 28 is decreased in comparison with the thickness of the bellow sections 26 at the merger of the side bellow portions 27 into the front bellow portion 28 of the insect netting 22 according to the prior art as shown in FIG. 4. This is advantageous, as this results in that the glass panel 8 is enabled to close evenly, such that the framework 21 lies evenly on the horizontal window profile 9.

[0061] Additionally, ventilation at the mergers of the side gauze webs 29, 32 of the side bellow portions 27 to the front gauze webs 35, 38 of the front bellow portions 26 may be improved due to less overlap of the gauze webs 29, 32; 35, 38 at the mergers in comparison to the prior art.

[0062] In order to illustrate a result of the insect netting 22 according to the invention, a comparison is made between a glass panel 8 in closed position with an insect netting according to an embodiment of the invention, FIG. 6, and with an insect netting according to the prior art, FIG. 7. It is clearly shown in FIG. 7 that at least the front portion of the framework 21 parallel to the front panel 23 of the insect netting 22 is warped with respect to the underlying horizontal window profile 9. In particular, the centre of the front portion of the framework 21 is situated closer to the underlying horizontal window profile 9 than the outer ends of the front portion of the framework 21. Warping of the front portion of the framework 21 is caused by the insect netting having a greater thickness at the mergers in comparison to the remaining of the insect netting 22. This is disadvantageous as elucidated above. As a result, one or more intermediate slanting window profiles 6 located between outer slanting window profiles 6 at which the framework 21 rests when in closed position, are not under load by the glass panel 8. All load applied by the glass panel 8, via the framework 21, is absorbed by the outer slanting window profiles 6 and the underlying horizontal window profile 9.

[0063] As shown in FIG. 6, the front portion of the framework 21 is substantially parallel to the underlying horizontal window profile 9. As a result, all load applied by the glass panel 8, via the framework 21, is absorbed by the outer slanting window profiles 6, the underlying horizontal window profile 9 and also the one or more intermediates slanting window profiles. The one or more intermediate slanting window profiles, therefore, are also under a load when the glass panel 8 is in its closed position.

[0064] It is to be understood that the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet be encompassed by the scope of the present invention.