WO2012019206A1 - A tubular photo bioreactor - Google Patents

A tubular photo bioreactor Download PDF

Info

Publication number
WO2012019206A1
WO2012019206A1 PCT/ZA2011/000057 ZA2011000057W WO2012019206A1 WO 2012019206 A1 WO2012019206 A1 WO 2012019206A1 ZA 2011000057 W ZA2011000057 W ZA 2011000057W WO 2012019206 A1 WO2012019206 A1 WO 2012019206A1
Authority
WO
WIPO (PCT)
Prior art keywords
reservoir
frame
photo bioreactor
light
tube
Prior art date
Application number
PCT/ZA2011/000057
Other languages
French (fr)
Inventor
Kutama Makonde
Peter Stegmann
Original Assignee
Vaal University Of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vaal University Of Technology filed Critical Vaal University Of Technology
Priority to AP2013006745A priority Critical patent/AP2013006745A0/en
Publication of WO2012019206A1 publication Critical patent/WO2012019206A1/en
Priority to ZA2013/01475A priority patent/ZA201301475B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/02—Photobioreactors
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G33/00—Cultivation of seaweed or algae
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/02—Form or structure of the vessel
    • C12M23/06—Tubular
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/50—Means for positioning or orientating the apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management

Definitions

  • This invention relates to a bioreactor, more particularly to a tubular photo bioreactor (TPB), even more particularly to a tubular photo bioreactor (TPB) which is capable of stimulating plant growth, especially micro algal growth.
  • TPB tubular photo bioreactor
  • Tubular photo bioreactors are known in the state of the art as an apparatus, which may be used to stimulate plant growth, especially algal growth by regulating light exposure to the plant material.
  • Typical tubular photo bioreactors are so designed as to optimize light exposure to the plant material either via natural light or via artificial light. This is achieved in various ways; either by using a vertical tubular structure, which attempts to optimize natural or artificial light exposure, or through a series of light arrays that, is directly in contact with the plant material and provides artificial light of a select wavelength.
  • An additional approach to stimulating plant growth in such systems is by using alternating light and dark cycles, which is accomplished by providing pulses of light of a specific wavelength.
  • this approach generally has the following disadvantages; • It is restricted to the use of artificial light.
  • the present invention addresses the design and development of an alternative tubular photo bioreactor, which at least partly alleviates the disadvantages discussed above.
  • a tubular photo bioreactor including: a reservoir for holding a liquid containing plant material, the reservoir being devoid from light; a pump in fluid communication with the reservoir; a length of tube extending from the pump to the reservoir through which the liquid can be circulated, the tube being at least partially translucent or transparent; and a frame supported on a base end and having an opposite free end, the frame being adapted to support the tube extending between the pump and the reservoir in a coiled formation about the frame in an illuminated environment illuminated by natural light and/or artificial light; the liquid capable of being circulated by the pump between a dark phase, wherein the liquid passes through the dark reservoir, and a light phase, wherein the liquid is exposed to light as it passes through the tube in the illuminated environment, such that the growth of the plant material in the liquid is stimulated by the dark and light phase cycle.
  • the frame tapers from the base end towards the free end, the tapering frame and the tube coiled there about enable light to strike the liquid at a plurality of different angles exposing the liquid passing in the tube to different light intensities, thereby to further stimulate growth of the plant material in the liquid.
  • the frame may be configured in a shape from a group of shapes including: a pyramid-like shape; a cone-like shape; and a spherical-like shape.
  • the tube may coil about the frame from the base end to the free end and then back over itself from the free end to the base end and into the reservoir. In an alternative embodiment, the tube coils about the frame from the base end to the free end and then directly from the free end back into the reservoir.
  • the tube between the free end of the frame and the reservoir passes through a channel defined by a central structure within the frame.
  • the central structure comprises one or more faces adapted for reflecting light and/or for supporting one or more artificial light sources.
  • the central structure takes a similar shape to that of the frame.
  • the frame and the central structure are preferably mounted on and extend from a base body in which the reservoir and/or pump are housed. More preferably, the base body prevents light from making contact with the reservoir and/or contents thereof. Most preferably, the base body is square is shape and the frame is shaped like a pyramid.
  • the plant material is typically algae.
  • the tube is adapted to support at least one plant and adapted to circulate the plant material along its entire length.
  • the pump may be adapted to regulate the flow rate of the plant material through the tube.
  • the reservoir is adapted to maintain the plant material in its volume.
  • a tubular photo bioreactor including:
  • a pyramid like frame which communicates at its base with a square body.
  • the square body being adapted to house at least one reservoir and at least one pump.
  • the pyramid like frame being modified to support a hollow transparent tube such that the tube is capable of extending from the pump and coiling around the frame from the base of the frame to its apex and then back into the reservoir.
  • the square body being devoid of light; while the pyramid like frame being illuminated by either natural light or artificial light.
  • the hollow tube being adapted to support at least one plant; with the tube extending from the pump and coiling around the pyramid like frame from the base of the frame to its apex and then vertically downwards directly back into the reservoir.
  • the tube being adapted to cycle the plant material along its entire length; and the pump being adapted to regulate the flow rate of the plant material through the tube.
  • the reservoir being adapted to maintain the plant material in its volume.
  • Figure 1 shows a front view of one a tubular photo bioreactor according to the present invention.
  • a photo tubular bioreactor 10 comprises a pyramid like- frame 12, a square base body 14 on which the frame in mounted and a length of translucent or transparent tube 18 extending between a pump 22 and a reservoir 24, which may be housed in the square base body 14 as illustrated.
  • the frame 12 comprises numerous adaptations 16 along its entire length, which allows it to support the tube 18, which tube extends in a coiled formation about the frame 12 from a base end of the frame 12 towards a tapered free end thereof.
  • the tube 18 may coil back over itself from the free end of the frame 12 and back into the reservoir, it is preferred that the tube 18 extends directly from the free end of the frame 12 back into the reservoir 24.
  • the central structure 20 comprises one or more faces adapted for reflecting light and/or for supporting one or more artificial light sources and preferably takes a similar shape to that of the frame 12.
  • liquid carrying a plant material is circulated through the entire length of the tube 18 by the pump 22, through a dark phase, where the liquid passes through the reservoir 24 being devoid of light, and a light phase, where the liquid is exposed to light as it passes through the tube 18 supported by the frame 12 in an illuminated environment.
  • the illuminated environment is illuminated by natural light and/or artificial light.
  • the tapering frame 12 together with the tube 18 coiled there about enable light to strike the liquid at a plurality of different angles exposing the liquid passing in the tube 18 to different light intensities, thereby to further stimulate growth of the plant material in the liquid.
  • tubing is approximately modified so that it contains regions, which are illuminated by light, and regions, which are devoid of light.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Chemical & Material Sciences (AREA)
  • Zoology (AREA)
  • Biotechnology (AREA)
  • Genetics & Genomics (AREA)
  • General Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Microbiology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Clinical Laboratory Science (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Environmental Sciences (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)

Abstract

This invention relates to a bioreactor, more particularly to a tubular photo bioreactor (TPB), which is capable of stimulating plant growth, especially micro algal growth. The tubular photo bioreactor includes a reservoir for holding a liquid containing plant material, wherein the reservoir is devoid from light, a pump in fluid communication with the reservoir and a length of transparent tube extending from the pump to the reservoir through which the liquid can be circulated. The tubular photo bioreactor further includes a frame adapted to support the tube extending between the pump and the reservoir in a coiled formation about the frame in an illuminated environment illuminated by natural light and/or artificial light. In this manner, the liquid is capable of being circulated by the pump between a dark phase, wherein the liquid passes through the dark reservoir, and a light phase, wherein the liquid is exposed to light as it passes through the tube in the illuminated environment, such that the growth of the plant material in the liquid is stimulated by the dark and light phase cycle.

Description

A TUBULAR PHOTO BIOREACTOR
FIELD OF THE INVENTION
This invention relates to a bioreactor, more particularly to a tubular photo bioreactor (TPB), even more particularly to a tubular photo bioreactor (TPB) which is capable of stimulating plant growth, especially micro algal growth.
BACKGROUND OF THE INVENTION
Tubular photo bioreactors are known in the state of the art as an apparatus, which may be used to stimulate plant growth, especially algal growth by regulating light exposure to the plant material.
Typical tubular photo bioreactors are so designed as to optimize light exposure to the plant material either via natural light or via artificial light. This is achieved in various ways; either by using a vertical tubular structure, which attempts to optimize natural or artificial light exposure, or through a series of light arrays that, is directly in contact with the plant material and provides artificial light of a select wavelength. An additional approach to stimulating plant growth in such systems is by using alternating light and dark cycles, which is accomplished by providing pulses of light of a specific wavelength. However, this approach generally has the following disadvantages; • It is restricted to the use of artificial light.
• It is expensive.
• It is not readily up scalable.
OBJECT OF THE INVENTION
The present invention, therefore, addresses the design and development of an alternative tubular photo bioreactor, which at least partly alleviates the disadvantages discussed above.
SUMMARY OF THE INVENTION
According to the invention, there is provided a tubular photo bioreactor including: a reservoir for holding a liquid containing plant material, the reservoir being devoid from light; a pump in fluid communication with the reservoir; a length of tube extending from the pump to the reservoir through which the liquid can be circulated, the tube being at least partially translucent or transparent; and a frame supported on a base end and having an opposite free end, the frame being adapted to support the tube extending between the pump and the reservoir in a coiled formation about the frame in an illuminated environment illuminated by natural light and/or artificial light; the liquid capable of being circulated by the pump between a dark phase, wherein the liquid passes through the dark reservoir, and a light phase, wherein the liquid is exposed to light as it passes through the tube in the illuminated environment, such that the growth of the plant material in the liquid is stimulated by the dark and light phase cycle.
Preferably, the frame tapers from the base end towards the free end, the tapering frame and the tube coiled there about enable light to strike the liquid at a plurality of different angles exposing the liquid passing in the tube to different light intensities, thereby to further stimulate growth of the plant material in the liquid.
The frame may be configured in a shape from a group of shapes including: a pyramid-like shape; a cone-like shape; and a spherical-like shape.
In one embodiment, the tube may coil about the frame from the base end to the free end and then back over itself from the free end to the base end and into the reservoir. In an alternative embodiment, the tube coils about the frame from the base end to the free end and then directly from the free end back into the reservoir. Typically, the tube between the free end of the frame and the reservoir passes through a channel defined by a central structure within the frame.
Generally, the central structure comprises one or more faces adapted for reflecting light and/or for supporting one or more artificial light sources. Preferably, the central structure takes a similar shape to that of the frame.
The frame and the central structure are preferably mounted on and extend from a base body in which the reservoir and/or pump are housed. More preferably, the base body prevents light from making contact with the reservoir and/or contents thereof. Most preferably, the base body is square is shape and the frame is shaped like a pyramid.
The plant material is typically algae. Generally, the tube is adapted to support at least one plant and adapted to circulate the plant material along its entire length.
The pump may be adapted to regulate the flow rate of the plant material through the tube. Preferably, the reservoir is adapted to maintain the plant material in its volume.
According to yet another embodiment of the invention, there is provided a tubular photo bioreactor including:
A pyramid like frame, which communicates at its base with a square body. The square body being adapted to house at least one reservoir and at least one pump. The pyramid like frame being modified to support a hollow transparent tube such that the tube is capable of extending from the pump and coiling around the frame from the base of the frame to its apex and then back into the reservoir.
The square body being devoid of light; while the pyramid like frame being illuminated by either natural light or artificial light. The hollow tube being adapted to support at least one plant; with the tube extending from the pump and coiling around the pyramid like frame from the base of the frame to its apex and then vertically downwards directly back into the reservoir.
The tube being adapted to cycle the plant material along its entire length; and the pump being adapted to regulate the flow rate of the plant material through the tube. The reservoir being adapted to maintain the plant material in its volume. BRIEF DESCRIPTION OF THE DRAWING
Embodiments of the invention will be described below by way of example only and with reference to the accompanying drawing, in which:
Figure 1 shows a front view of one a tubular photo bioreactor according to the present invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to figure 1 , a photo tubular bioreactor 10 comprises a pyramid like- frame 12, a square base body 14 on which the frame in mounted and a length of translucent or transparent tube 18 extending between a pump 22 and a reservoir 24, which may be housed in the square base body 14 as illustrated.
The frame 12 comprises numerous adaptations 16 along its entire length, which allows it to support the tube 18, which tube extends in a coiled formation about the frame 12 from a base end of the frame 12 towards a tapered free end thereof. Although the tube 18 may coil back over itself from the free end of the frame 12 and back into the reservoir, it is preferred that the tube 18 extends directly from the free end of the frame 12 back into the reservoir 24.
That portion of the tube 18 extending directly between the free end of the frame 12 and the reservoir 24 passes through a channel defined in a central structure 20, located within the frame 12 and also extending from the square base body 14. The central structure 20 comprises one or more faces adapted for reflecting light and/or for supporting one or more artificial light sources and preferably takes a similar shape to that of the frame 12. In use, liquid carrying a plant material is circulated through the entire length of the tube 18 by the pump 22, through a dark phase, where the liquid passes through the reservoir 24 being devoid of light, and a light phase, where the liquid is exposed to light as it passes through the tube 18 supported by the frame 12 in an illuminated environment. In this manner, the growth of the plant material being carried in the liquid is stimulated by the cycle of exposing the liquid to dark and light phases. It will be appreciated that the illuminated environment is illuminated by natural light and/or artificial light.
Growth of the plant material is further stimulated by the tapered shape of the frame 12. The tapering frame 12, together with the tube 18 coiled there about enable light to strike the liquid at a plurality of different angles exposing the liquid passing in the tube 18 to different light intensities, thereby to further stimulate growth of the plant material in the liquid.
Although the invention has been described above with reference to preferred embodiments and examples, it will be appreciated that many modifications or variations of the invention are possible without departing from the spirit or scope of the invention. For example, in still a further embodiment, the tubing is approximately modified so that it contains regions, which are illuminated by light, and regions, which are devoid of light.

Claims

1. A tubular photo bioreactor including: a reservoir for holding a liquid containing plant material, the reservoir being devoid from light; a pump in fluid communication with the reservoir; a length of tube extending from the pump to the reservoir through which the liquid can be circulated, the tube being at least partially translucent or transparent; and a frame supported on a base end and having an opposite free end, the frame being adapted to support the tube extending between the pump and the reservoir in a coiled formation about the frame in an illuminated environment illuminated by natural light and/or artificial light; the liquid capable of being circulated by the pump between a dark phase, wherein the liquid passes through the dark reservoir, and a light phase, wherein the liquid is exposed to light as it passes through the tube in the illuminated environment, such that the growth of the plant material in the liquid is stimulated by the dark and light phase cycle.
2. A tubular photo bioreactor according to claim 1 , wherein the frame tapers from the base end towards the free end, the tapering frame and the tube coiled there about enable light to strike the liquid at a plurality of different angles exposing the liquid passing in the tube to different light intensities, thereby to further stimulate growth of the plant material in the liquid.
3. A tubular photo bioreactor according to claim 2, wherein the frame is configured in a shape from a group of shapes including: a pyramid-like shape; a cone-like shape; and a spherical-like shape.
4. A tubular photo bioreactor according to any one of claims 1 to 3, wherein the tube coils about the frame from the base end to the free end and then coils back over itself from the free end to the base end and into the reservoir.
5. A tubular photo bioreactor according to any one of claims 1 to 3, wherein the tube coils about the frame from the base end to the free end and then directly from the free end back into the reservoir.
6. A tubular photo bioreactor according to claim 5, wherein the tube between the free end of the frame and the reservoir passes through a channel defined by a central structure within the frame.
7. A tubular photo bioreactor according to claim 6, wherein the central structure comprises one or more faces adapted for reflecting light and/or for supporting one or more artificial light sources.
8. A tubular photo bioreactor according to claim 7, wherein the central structure takes a similar shape to that of the frame.
9. A tubular photo bioreactor according to claim 8, wherein the frame and the central structure are mounted on and extend from a base body in which the reservoir and/or pump are housed.
10. A tubular photo bioreactor according to claim 9, wherein the base body prevents light from making contact with the reservoir and/or contents thereof.
11. A tubular photo bioreactor according to claim 10, wherein the base body is square is shape and the frame is shaped like a pyramid.
12. A tubular photo bioreactor according to any one of the preceding claims wherein the plant material is algae.
13. A tubular photo bioreactor according to any one of the preceding claims wherein the tube is adapted to support at least one plant.
14. A tubular photo bioreactor according to any one of the preceding claims wherein the tube is adapted to circulate the plant material along its entire length.
15. A tubular photo bioreactor according to any one of the preceding claims wherein the pump is adapted to regulate the flow rate of the plant material through the tube.
16. A tubular photo bioreactor according to any one of the preceding claims wherein the reservoir is adapted to maintain the plant material in its volume.
17. A tubular photo bioreactor substantially as herein described and illustrated.
PCT/ZA2011/000057 2010-08-05 2011-08-05 A tubular photo bioreactor WO2012019206A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AP2013006745A AP2013006745A0 (en) 2010-08-05 2011-08-05 A tubular photo bioreactor
ZA2013/01475A ZA201301475B (en) 2010-08-05 2013-02-27 A tubular photo bioreactor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA201005610 2010-08-05
ZA2010/05610 2010-08-05

Publications (1)

Publication Number Publication Date
WO2012019206A1 true WO2012019206A1 (en) 2012-02-09

Family

ID=45559861

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2011/000057 WO2012019206A1 (en) 2010-08-05 2011-08-05 A tubular photo bioreactor

Country Status (3)

Country Link
AP (1) AP2013006745A0 (en)
WO (1) WO2012019206A1 (en)
ZA (1) ZA201301475B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014133793A1 (en) 2013-02-26 2014-09-04 Heliae Development, Llc Modular tubular bioreactor
US20140331552A1 (en) * 2011-12-19 2014-11-13 Nanyang Technological University Bioreactor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070231886A1 (en) * 2006-03-28 2007-10-04 Sartorius Ag Reactor plant and process for culturing phototropic microorganisms
US20080236227A1 (en) * 2007-04-02 2008-10-02 Flynn Timothy M Dry land erosion control using photosynthetic nitrogen-fixing microorganisms
JP2010035540A (en) * 2008-08-06 2010-02-18 Yasunori Kudo Water flow type hydroponics machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070231886A1 (en) * 2006-03-28 2007-10-04 Sartorius Ag Reactor plant and process for culturing phototropic microorganisms
US20080236227A1 (en) * 2007-04-02 2008-10-02 Flynn Timothy M Dry land erosion control using photosynthetic nitrogen-fixing microorganisms
JP2010035540A (en) * 2008-08-06 2010-02-18 Yasunori Kudo Water flow type hydroponics machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140331552A1 (en) * 2011-12-19 2014-11-13 Nanyang Technological University Bioreactor
US9930842B2 (en) * 2011-12-19 2018-04-03 Nanyang Technological University Bioreactor
WO2014133793A1 (en) 2013-02-26 2014-09-04 Heliae Development, Llc Modular tubular bioreactor
US10053659B2 (en) 2013-02-26 2018-08-21 Heliae Development Llc Modular tubular bioreactor
US10876087B2 (en) 2013-02-26 2020-12-29 Heliae Development Llc Modular tubular bioreactor

Also Published As

Publication number Publication date
AP2013006745A0 (en) 2013-02-28
ZA201301475B (en) 2013-11-27

Similar Documents

Publication Publication Date Title
CN104066319B (en) aquaculture lighting device and method
EP2575428A2 (en) Hydroponic system
CN103820318A (en) Optical organism culture device
WO2012019206A1 (en) A tubular photo bioreactor
CN103210806A (en) Bionic plant light complement device
KR20160023107A (en) Indoor plant cultivation apparatus
CN213311952U (en) Ultraviolet disinfection component with net structure
KR20130066830A (en) Vegetation rope and apparatus for hydroponics using the same
CN203269656U (en) Water purifying device
CN201278733Y (en) Small arched shed for floating system hanged with film floating pool inside
CN106332768A (en) Efficient illumination cultivation device for gardens
CN202019602U (en) Automatic flower watering device
CN212280805U (en) Vegetable and flower cultivation rack
CN210053970U (en) High-yield planting device
CN208874894U (en) A kind of control root cage with locking member
CN104445623B (en) A kind of sewage treatment system
JP3183698U (en) Cultivation equipment
CN104509480B (en) Movable oxygenation equipment
CN203206827U (en) Light filling device for bionic plant
EP4321014A1 (en) A planter or pot irrigation system and use thereof
CN208338667U (en) Ecological complex culture device
CN109329176A (en) A kind of Multifunction aquatic cylinder
CN204104417U (en) Carry the flowerpot of kettle and light source
US20070234639A1 (en) Self-watering plant hanger
CN203762008U (en) Small-size combined type soilless culturing device

Legal Events

Date Code Title Description
DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11815429

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11815429

Country of ref document: EP

Kind code of ref document: A1