DE102007033923A1 - Pollen-sealed vegetable breeding cabinet, has air guiding and filter systems, and exhaust system ensuring constant low-pressure in cabinet during operation and air extraction when opened by ventilators - Google Patents

Abstract

The cabinet has an air guiding system (8), a filter system (9) and an exhaust system, which ensures constant low-pressure in the cabinet during operation and ensure air extraction when opened by ventilators. An air conducting grid is formed from unfolded and folded paper or cardboard web, where exhaust air is guided through the grid and causes swirling-free airflow from an access door. A substrate or a vegetable base is placed in a sealed PVC-hose whose dimension is matched to an inner volume of the cabinet.

Description

The Controversy over dangers of contamination of Plant cultures with genetically modified genetic material accordingly modified trial cultures, has the free-range breeding genetically improved crops in Europe is virtually impossible made.

But there are also concerns about growing in greenhouses if their exhaust air is not filtered safely and numerous other measures to prevent the discharge of pollens, especially at the entrances and when disposing of the residual material.

Especially ask questions of possible transfer of pollen but also in several, differently modified Plant species in a laboratory or greenhouse.

Object of the invention

It is therefore an object of the present invention, a device for plant breeding on a laboratory scale, with the discharge of pollen in any case - including the disposal of plant remains - safe is prevented.

Solution of the task

This is inventively by a plant-breeding cabinet achieved, the airtight closed executed and at constant negative pressure only with metered supply air and with a turbulence-free air flow when opening is operated, as well as with a multi-membered, pollen-dense filter system is equipped for the exhaust air.

Further ensures the safe disposal of plant residues, that the rearing soil is placed in a foil pan whose Edges corresponding to a folded film tube Cross section exists and at the end of a series of experiments over the entire plant culture, including flow pre-filters and paper fine filter pulled, evacuated and so very compact and can be disposed of tightly.

State of the art

Plant breeding cabinets for laboratories and research institutes are well known they usually have facilities for - mostly automatic - exposure and ventilation, as well Watering the plants.

Further are, in particular for chemical laboratories, air exhaust devices known, usually via activated carbon filters clean the air before blowing it out.

These However, facilities are for pollen-safe rearing of plants unsuitable, because on the one hand active carbon filter no safe protection of the passage of pollens (which are not, how storing gas molecules in capillary openings), Furthermore, especially in the elimination of crops pollen many times scattered or uncontrolled with the rearing substrate or soil disposed of.

There are also - z. B. after DE 20 2004 006 822 airtight cultivation cabinets with filter device known, only here again only activated carbon filter are used here, a vortex-free flow of air is not guaranteed when opening the door and a safe disposal of the plant remains are not provided.

Technical design the invention

As with the drawings 1 to 3 can be seen, which describes a preferred embodiment of the invention, there is a cultivation cabinet according to the invention 1 from an airtight housing, the z. B. can be adapted as an array of the size and design of other cabinet elements. On the ceiling 2 this cabinet 1 Inside are easy to clean equipment for exposure 3 and irrigation 4 attached to the plants, but also on the side walls 5 and or 6 can be mounted.

In front of the back wall 7 is at some distance an airflow 8th and filter system 9 appropriate. The air guidance system 8th preferably consists of a disposable with the plant residues cardboard honeycomb grid, as it results from the cross section of several layers geslicter corrugated cardboard or is used as a honeycomb core in lightweight panels. The execution as a bonded folded honeycomb (z. B. CLS type of Honicel ^®) whose upper edge can be hooked to the development of the honeycomb structure in corresponding receptacles is preferred. It slowly folds up when it comes off and can easily be disposed of.

This honeycomb structure is - preferably on the front - with the filter 9 occupied, the, z. B. as a paper web with a passage size of 1 micron, pollen already largely safe retention.

The purpose of this system is to extract the air from the gap 11 between the back wall 7 and filters 9 , a smooth, swirl-free air flow out of the access opening 12 away from her to the back wall 7 to achieve. In a preferred closure device of the access opening 13 with a double leaf door with wings 14 and 15 , as well as an automatic increase in the speed the fan or suction fan 27 When opening, avoid discharging pollen when opening the door.

The exhaust air system consists of at least one fan, which takes its supply air from the inflow pipe, which in the exhaust air intake 27 in the middle of the room between the housing rear wall and the air duct 8th and filter system 9 ends.

The Pressure side of the blower leads - if necessary over another, interchangeable fine filter (also as activated carbon filter can be executed) to an electrostatic filter unit, the - before exhausting the air into the open one last Fine filtering causes (not shown).

In the circumferential throat 17 of the soil 18 of the breeding cabinet 1 the unfolding becomes a plastic tube 19 (preferably made of PVC) inserted, whose cross-sectional profile of the cabinet floor 18 corresponds approximately, and which has a close close to this floor out.

In the resulting PVC tub is the planting soil or the substrate 20 and in it the seedlings 21 set.

For later disposal of the plant residues is the upper edge of the plastic tube 19 Carefully pulled up and unfolded the hose with it.

When loosening the flow grid 8th and pre-filters 9 at their upper suspension, these lower in the unfolded film tube, which now on the still existing plant stands 21 can be pulled up and gathered. After a recommended phase of setting or spraying water in the remaining opening, this is to the exhaust air intake 27 held and thus part-evacuated. The shrunk hose with content can be gradually further compressed by hand and sealed airtight for disposal.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 202004006822 [0010]

Claims (14)

Pollen seal plant breeding cabinet, characterized in that a multi-stage air and filter system reliably prevents the escape of pollen and the construction ensures a residue-free disposal of the entire content including filter media. Pollen poet plant breeding cabinet according to claim 1, characterized in that an exhaust air system a stable Underpressure in the cabinet during operation, and increased air extraction guaranteed at opening. Pollen poet plant breeding cabinet according to claim 2, characterized in that the air extraction by one or several fans. Pollen poet plant breeding cabinet according to claim 2, characterized in that the exhaust air only by a Luftleitgitter is guided, which is a turbulence-free air movement away from the access door. Pollen poet plant breeding cabinet according to claim 4, characterized in that the Luftleitgitter from deployable and refoldable paper or cardboard honeycomb exists. Pollen poet plant breeding cabinet according to claim 4, characterized in that the air guide at the front with a paper fine filter of passage size <1 microns hung is, which is applied under negative pressure to him. Pollen poet plant breeding cabinet according to claim 4, characterized in that an electrostatic filter with replaceable insert is connected downstream. Pollen poet plant breeding cabinet according to claim 4 to 7, characterized in that an active carbon filter with removable cartridge is connected downstream. Pollen poet plant breeding cabinet according to claim 1, characterized in that the access door mehrflüglig and the wings synchronized and muted to the outside are executed swinging. Pollen poet plant breeding cabinet according to claim 1, characterized in that the substrate or the plant soil are inserted in a dense PVC tube whose size corresponds to the internal volume of the growing cabinet. Pollen poet plant breeding cabinet according to claim 10, characterized in that the PVC hose for planting and care is folded into a shallow tub whose shape the basic inner surface of the growing cabinet corresponds. Pollen poet plant breeding cabinet according to claim 4 to 6 and 10, characterized in that the film tube When pulled up for disposal, attach to the suspension at its upper edge dissolved air grille including vorgehängtem filter with absorbs. Pollen poet plant breeding cabinet after one or more of the preceding claims, characterized that the film tube at the vent evacuated under the protection of the downstream filter and thereby can be compressed. Pollen poet plant breeding cabinet after one or more of the preceding claims, characterized that active carbon filter and use of the electrostatic filter after the evacuation of the bag in another, sucked Foil bags can be disposed of tightly closed.