EP0204688B2 - Belüftungsvorrichtung für Flüssigkeiten - Google Patents

Belüftungsvorrichtung für Flüssigkeiten Download PDF

Info

Publication number: EP0204688B2
Authority: EP; European Patent Office
Prior art keywords: liquid; flow channels; rotor; stator; flow
Prior art date: 1985-06-05
Legal status (The legal status 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 status listed.): Expired - Lifetime

Application number

EP86890128A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP0204688A3 (en

EP0204688A2 (de

EP0204688B1 (de

Inventor

Heinrich Dr. Techn. Dipl.-Ing. Ebner

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Heinrich Frings GmbH and Co KG

Original Assignee

Heinrich Frings GmbH and Co KG

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.)

1985-06-05

Filing date

1986-05-07

Publication date

1992-11-11

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3519010&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0204688(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1986-05-07 Application filed by Heinrich Frings GmbH and Co KG filed Critical Heinrich Frings GmbH and Co KG

1986-12-10 Publication of EP0204688A2 publication Critical patent/EP0204688A2/de

1988-06-22 Publication of EP0204688A3 publication Critical patent/EP0204688A3/de

1990-01-03 Publication of EP0204688B1 publication Critical patent/EP0204688B1/de

1992-11-11 Application granted granted Critical

1992-11-11 Publication of EP0204688B2 publication Critical patent/EP0204688B2/de

2006-05-07 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
- B01F23/23342—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer the stirrer being of the centrifugal type, e.g. with a surrounding stator

Definitions

the invention relates to a ventilation device for liquids, consisting of a arranged in the bottom region of a container, air and liquid sucking rotor with a vertical axis of rotation and a stator surrounding the rotor, which has a closed ring of cross-sectional flow channels, each with an inlet opening for the Has liquid-air mixture, wherein the flow channels are inclined with respect to the radial direction in the direction of rotation of the rotor.
the ventilation becomes weaker because the flow velocity of the ejected liquid-air mixture decreases rapidly radially outwards, and this already in the area of the flow channels.
the diameter of the container receiving the liquid to be aerated must not exceed a certain dimension in order to ensure uniform ventilation of the liquid over the entire container cross-section at a given rotor output
a rotor in the bottom area of the container, a rotor is arranged within a coaxial housing with a vertical axis of rotation, which sucks liquid from the container with the aid of pump blades and pumps it axially through the housing, through the inner wall of which air is air is blown radially inward into the liquid flow.
This downward flowing liquid-air mixture is pumped into a connection clamp provided in connection with the cylindrical housing, approximately square in plan, from which two spaced-apart distribution channels extend on each circumferential side, which are inclined towards the radial direction in the direction of rotation of the rotor and open are angled again halfway outwards in the direction of inclination.
JP-GM 23 036/1983 it is known (JP-GM 23 036/1983) to provide four flow channels tangential to the rotor with a rectangular cross section.
a stirring effect is to be achieved via the liquid-air mixture flowing out of the flow channels, which, given the mutual angular displacement of the flow channels of 90 °, precludes uniform ventilation of the container.
the invention is therefore based on the object of improving a ventilation device of the type described at the outset with simple means such that, with a given rotor output, uniform ventilation can also be ensured over a larger container cross section.
the invention achieves the stated object in that at least twelve flow channels are provided which are separated from one another by wedge-shaped spaces, the apex of which lie between the immediately adjacent inlet openings, and in that the vertical boundary surfaces of each flow channel run parallel or at an angle of at most 7 ° converge or diverge.
the exit velocity of the liquid-air mixture from the flow channels can be increased considerably compared to conventional stators with simple guide walls without having to increase the rotor power.
the higher outlet velocity of the liquid-air mixture requires a correspondingly larger outlet width of the mixture, so that even ventilation of larger container cross sections can be ensured.
This results in particularly advantageous design conditions because the size and shape of the rotor determined the ejection volume of air and liquid and thus the desired ventilation rate, while the formation of the flow channels of the stator is responsible for the range of the liquid-air mixture ejected.
the exit velocity of the liquid-air mixture ejected from the stator can be influenced by the shape of the flow channels.
the exit velocity of the liquid-air mixture is correspondingly reduced compared to the entry velocity into the stator. If the exit velocity is to be increased, the flow cross section of the flow channels towards the exit end is to be reduced by the vertical boundary surfaces converging towards the outer circumference of the stator. However, the angle between the vertical boundary surfaces of the individual flow channels must not exceed 7 °, unless increased eddy formation is to be accepted. In this context, it must be borne in mind that turbulent flows considerably limit the possible range of the liquid-air mixture expelled.
the flow channels can be designed differently. For example, it is possible to form the flow channels by means of web plates which are provided between two annular disks arranged at an axial distance from one another. A particularly advantageous construction results, however, if the flow channels consist of U-profiles placed on an annular disc. This design not only offers advantageous manufacturing conditions with a comparatively low cost of materials but also allows simple stator cleaning because the gusset areas between the individual U-profiles forming the flow channels are freely accessible.
the ventilation device shown which is arranged directly above a tank bottom 1, essentially consists of a rotor 2, which is driven by a motor 3, and a stator 4 surrounding the rotor 2.
the vertical rotor shaft 5 passes through the tank bottom 1, on which the motor 3 is flanged.
the air to be introduced into the liquid of the container is sucked in via an air line 6 and fed axially to the rotor 2, which at the same time draws liquid from the container via an annular opening 7 of the stator 4 and conveys it with the air into the stator, as indicated by the flow arrows is.
the liquid-air mixture is received in flow channels 8 which, according to FIGS. 1 to 3, are formed by vertical webs 9 which are inserted between two annular disks 10 and 11.
the arrangement is such that adjacent webs 9 flow channels 8 arranged directly next to one another diverge towards the outer circumference of the stator 4, so that the vertical boundary surfaces of the flow channels 8 are parallel to one another.
This configuration results in an exit velocity of the flow from the flow channels 8 which corresponds approximately to the entry velocity of the liquid-air mixture conveyed into the stator 4 by the rotor 2, so that the flow continues over a large radius into the container due to the comparatively high exit velocity.
This ensures even ventilation of containers of larger diameter if a corresponding number of flow channels ensures that the flows of adjacent flow channels do not diverge too much, especially against the region of the peripheral wall of the container.
Fig. 2 15 flow channels are provided.
a particularly simple stator construction can be obtained in that the flow channels 8 are formed by U-profiles 12 which are placed on an annular disk 13.
This design not only ensures simple manufacture, but also offers advantages in terms of stator cleaning because the gusset areas between adjacent flow channels are freely accessible.
the vertical boundary surfaces of the individual flow channels 8 can deviate from their parallel course. If, for example, the webs 9 of the individual flow channels 8 are arranged diverging towards the outer circumference of the stator 4, the flow within the flow channels 8 is slowed down. The angle ⁇ between the vertical webs 9 must not exceed 7 °, since otherwise with An increased eddy formation is to be expected, which greatly limits the range of the flow emerging from the flow channels 8.
the webs 9 can converge towards the outside, as indicated in FIG. 6.
the angle a between the vertical webs 9 of the individual flow channels is to be limited to a maximum of 7 °.
the exemplary embodiment according to FIG. 6 shows the minimum number of twelve flow channels.
stator With the help of the aeration device shown, the special design of the stator enables liquid to be evenly ventilated over larger base areas, these aeration devices being particularly suitable for use in submerged vinegar fermentation, in yeast production or in wastewater treatment.
the invention is of course not limited to the illustrated embodiment of a ventilation device.
very different rotors can be used, e.g. It is possible to draw in liquid not only on one side but also on both sides of the rotor according to Fig. 1.
the rotor construction can also be designed so that the air can be drawn in from below the rotor and that the motor is mounted in the container above the rotor in the form of a submersible motor of known design. Of course, any gas other than air can be drawn in and distributed in any given liquid.
the inclination of the flow channels 8 with respect to the radial direction is then to be determined, the number of flow channels being selected depending on the inclination of the flow channels and the container diameter.
adjacent webs 9 of flow channels 8 arranged directly next to one another can be formed by a common intermediate body which has a wedge-shaped shape in its plan. so that in turn the vertical boundary surfaces of each flow channel run at least substantially parallel.

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Mixers Of The Rotary Stirring Type (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Apparatus Associated With Microorganisms And Enzymes (AREA)
Biological Treatment Of Waste Water (AREA)
Physical Or Chemical Processes And Apparatus (AREA)

EP86890128A 1985-06-05 1986-05-07 Belüftungsvorrichtung für Flüssigkeiten Expired - Lifetime EP0204688B2 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
AT0169685A AT383108B (de)	1985-06-05	1985-06-05	Belueftungsvorrichtung fuer fluessigkeiten
AT1696/85		1985-06-05

Publications (4)

Publication Number	Publication Date
EP0204688A2 EP0204688A2 (de)	1986-12-10
EP0204688A3 EP0204688A3 (en)	1988-06-22
EP0204688B1 EP0204688B1 (de)	1990-01-03
EP0204688B2 true EP0204688B2 (de)	1992-11-11

Family

ID=3519010

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP86890128A Expired - Lifetime EP0204688B2 (de)	1985-06-05	1986-05-07	Belüftungsvorrichtung für Flüssigkeiten

Country Status (10)

Country	Link
EP (1)	EP0204688B2 (ja)
JP (1)	JPS6244167A (ja)
CN (1)	CN86103733A (ja)
AT (1)	AT383108B (ja)
BR (1)	BR8602601A (ja)
DE (1)	DE3616680A1 (ja)
ES (1)	ES8703748A1 (ja)
FI (1)	FI88262C (ja)
IN (1)	IN165315B (ja)
SU (1)	SU1625330A3 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0717440Y2 (ja) *	1988-05-18	1995-04-26	株式会社荏原製作所	攪拌・曝気装置
DE4207077C2 (de) *	1991-03-07	1997-07-03	Horst Adler	Kompaktkläranlage mit besonderem Schlammrückführelement
FI91242C (fi) *	1992-07-17	1994-06-10	Outokumpu Mintec Oy	Ilmastuslaite
AT398046B (de) *	1992-09-10	1994-08-25	Frings & Co Heinrich	Vorrichtung zur gaseintragung in flüssigkeiten
DE9316251U1 (de) *	1993-10-25	1994-02-10	Charatjan, Manuela, 76332 Bad Herrenalb	Vorrichtung zum Rühren, bzw. zum Rühren und gleichzeitigen Begasen von Flüssigkeiten, Suspensionen und heterogenen Fluiden
DE19519553C2 (de) *	1995-05-27	1997-04-24	Michael Dipl Ing Godzik	Kreiselbelüfter zum Einbringen eines Gases in eine Flüssigkeit
DE102009044168A1 (de)	2009-10-02	2011-04-07	Green Finance Ag	Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Alkylestern höherer Fettsäuren
CN102921320A (zh) *	2012-11-05	2013-02-13	无锡托普搅拌设备有限公司	一种气液分散搅拌器
AU2016342216B2 (en) *	2015-10-19	2019-12-12	Société des Produits Nestlé S.A.	Apparatus and method for aeration of a food product
KR102666285B1 (ko) *	2019-04-15	2024-05-16	엠. 테크닉 가부시키가이샤	교반기

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT269083B (de) *	1966-04-05	1969-03-10	Frings Fa Heinrich	Belüftungsvorrichtung für Flüssigkeiten
US3690621A (en) *	1969-03-04	1972-09-12	Itsuko Tanaka	Agitator
NO142830C (no) *	1978-02-28	1980-10-29	Trondhjems Mek Verksted As	Anordning for fordeling av en gass i et vaeskemedium
FR2444494A1 (fr) *	1978-12-21	1980-07-18	Jeumont Schneider	Dispositif permettant de dissoudre et/ou de melanger un fluide dans un liquide, et pouvant etre notamment utilise pour l'aeration des eaux residuaires
DE2907257C2 (de) *	1979-02-24	1982-04-22	Ukrainskij Naucno-Issledovatel'skij Uglechimiceskij Institut, Charkov	Vorrichtung zur Durchlüftung von Trüben
JPS5823036U (ja)	1981-07-31	1983-02-14	パイオニア株式会社	テ−プレコ−ダ

1985
- 1985-06-05 AT AT0169685A patent/AT383108B/de not_active IP Right Cessation
1986
- 1986-05-07 EP EP86890128A patent/EP0204688B2/de not_active Expired - Lifetime
- 1986-05-16 DE DE19863616680 patent/DE3616680A1/de active Granted
- 1986-05-19 IN IN378/CAL/86A patent/IN165315B/en unknown
- 1986-05-21 FI FI862145A patent/FI88262C/fi not_active IP Right Cessation
- 1986-05-30 CN CN198686103733A patent/CN86103733A/zh active Pending
- 1986-06-04 SU SU864027574A patent/SU1625330A3/ru active
- 1986-06-04 BR BR8602601A patent/BR8602601A/pt not_active IP Right Cessation
- 1986-06-04 JP JP61128299A patent/JPS6244167A/ja active Granted
- 1986-06-05 ES ES555750A patent/ES8703748A1/es not_active Expired

Also Published As

Publication number	Publication date
DE3616680A1 (de)	1986-12-11
CN86103733A (zh)	1986-12-17
ES555750A0 (es)	1987-03-01
FI862145A0 (fi)	1986-05-21
JPH0313866B2 (ja)	1991-02-25
EP0204688A3 (en)	1988-06-22
ATA169685A (de)	1986-10-15
AT383108B (de)	1987-05-25
FI88262C (fi)	1993-04-26
ES8703748A1 (es)	1987-03-01
EP0204688A2 (de)	1986-12-10
EP0204688B1 (de)	1990-01-03
DE3616680C2 (ja)	1989-05-24
JPS6244167A (ja)	1987-02-26
FI862145L (fi)	1986-12-06
IN165315B (ja)	1989-09-16
SU1625330A3 (ru)	1991-01-30
FI88262B (fi)	1993-01-15
BR8602601A (pt)	1987-02-03

Publication	Publication Date	Title
EP0365652B1 (de)	1993-08-25	Mit drehinjektor versehener turbomischer zum vermischen von flüssigen und/oder gasförmigen medien
DE68915059T2 (de)	1994-11-03	Mischvorrichtung.
DE2347982A1 (de)	1974-04-04	Verfahren und vorrichtung zur belueftung von fluessigkeiten
EP0204688B2 (de)	1992-11-11	Belüftungsvorrichtung für Flüssigkeiten
DE1557138A1 (de)	1970-03-19	Vorrichtung zum Begasen von Fluessigkeiten
EP0993862B1 (de)	2003-06-04	Selbstansaugende, rotierbare Dispergiervorrichtung
DE3782951T2 (de)	1993-07-08	Ruehrer.
DE2924458C2 (de)	1986-06-26	Extraktionsvorrichtung für die Flüssig-Flüssig-Extraktion
DE69420277T2 (de)	2000-05-11	Zentrifugale flüssigkeitspumpe mit inwendiger gasinjektionsvorrichting
CH664092A5 (de)	1988-02-15	Homogenisiermaschine.
DE102019101934A1 (de)	2020-07-30	Rührorganvorrichtung
AT398046B (de)	1994-08-25	Vorrichtung zur gaseintragung in flüssigkeiten
CH649311A5 (de)	1985-05-15	Fermentor zum zuechten von mikroorganismen.
DE2120362A1 (de)	1971-12-02	Verfahren und Vorrichtung zum Einblasen von Gas in eine Flüssigkeit
DE2459710C3 (de)	1979-07-05	Selbstansaugendes Belüften und Begasen von Flüssigkeiten
DE3616680C3 (ja)
DE2907257C2 (de)	1982-04-22	Vorrichtung zur Durchlüftung von Trüben
DE19602017C2 (de)	2001-04-05	Unterwasserinstallation für Schwimmbecken
DE2559235B2 (de)	1981-03-26	Begasungsvorrichtung
DE2244284C2 (de)	1974-06-27	Bei übungsvorrichtung für Flüssigkeiten
DE2441335A1 (de)	1975-03-06	Verfahren und vorrichtung zum einfuehren von luft oder gas in eine in bewegung befindliche fluessigkeit
DE3705716C2 (de)	1996-03-28	Vorrichtung zum Fördern und Begasen eines Flüssigkeitsgasgemisches
DE2513917A1 (de)	1975-10-09	Mischvorrichtung
DE2646517A1 (de)	1978-04-20	Einrichtung zur begasung von fluessigkeit
DE19608222A1 (de)	1996-07-18	Dispergierpumpe

Legal Events

Date	Code	Title	Description
1986-10-24	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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