EP2740528B1 - Gas mixer - Google Patents

Gas mixer Download PDF

Info

Publication number: EP2740528B1
Authority: EP; European Patent Office
Prior art keywords: gas; inlet; feed; internal circuit; outlet
Prior art date: 2012-12-10
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.): Not-in-force

Application number

EP12382490.6A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP2740528A1 (en

Inventor

Joan Casanovas Gesalí

Sergio De Miguel Sanz

Joaquín José De La Orza Tortosa

Humbert Gimenéz Font

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.)

GOMETRICS SL

Gometrics S L

Original Assignee

GOMETRICS SL

Gometrics S L

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.)

2012-12-10

Filing date

2012-12-10

Publication date

2015-11-04

2012-12-10 Application filed by GOMETRICS SL, Gometrics S L filed Critical GOMETRICS SL

2012-12-10 Priority to ES12382490.5T priority Critical patent/ES2561900T3/es

2012-12-10 Priority to EP12382490.6A priority patent/EP2740528B1/en

2014-06-11 Publication of EP2740528A1 publication Critical patent/EP2740528A1/en

2015-11-04 Application granted granted Critical

2015-11-04 Publication of EP2740528B1 publication Critical patent/EP2740528B1/en

Status Not-in-force legal-status Critical Current

2032-12-10 Anticipated expiration legal-status Critical

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
- B01F23/10—Mixing gases with gases
- B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
- B01F23/191—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means characterised by the construction of the controlling means
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/105—Mixing heads, i.e. compact mixing units or modules, using mixing valves for feeding and mixing at least two components
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
- B01F35/833—Flow control by valves, e.g. opening intermittently

Definitions

the present invention relates to a gas mixer for industrial processes and research activities for use in laboratories in general, especially designed for the preparation of mixtures of gas (binary, ternary, quaternary, etc.), and the generation of atmospheres with a desired proportion of gases.
the instrument is conceived for the analysis and characterization of gas sensors and transmitters; verification and calibration of gas analyzers; and research on growth in plant or cell cultures, among other uses.
the fact that they are so compact limits considerably, due to lack of space, the number of inlets for feed gases; the usual number being between two and four gases in total that can remain permanently connected, and thus, arranged on the device.
there are some known solutions that have allowed to slightly increase said number of inlets by means of incorporating one or more feed modules each of which are connectable to supply sources of a first and of a second inlet gas.
Each feed module is designed to supply a feed gas selectable among the first and the second inlet gas towards a flow regulator, in such a way that the number of gases available to be controlled is multiplied.
each one of these modules is formed by a hydraulic (or pneumatic) circuit in which, normally a three-way valve is connected by means of the appropriate conduits, to two inlet channels and one outlet channel.
the present invention solves the previously mentioned problems by means of a sophisticated gas mixer, optimized and highly manageable and compact that allows working with a greater number of feed gases, performing automatic cleaning of the circuit without disconnecting the cylinders, obtaining more homogenous mixtures and working interchangeably with inert gases and oxidizing gases.
the mixer of the present invention incorporates a number of operational modules that provide greater precision, versatility, easy use and safety.
Document GB-A-2040715 discloses a gas mixer in accordance with the preamble of claim 1.
the invention is defined by the combination of features of claim 1.
the gas mixer of the present invention is of the type that comprises one or more feed modules, each one of these connectable to the supply sources of a first and of a second inlet gas, wherein each feed module is designed to supply a feed gas selectable among the first and the second inlet gas towards a flow regulator.
the gas mixer of the present invention has a feed module comprising:
the feed module additionally comprises:
the feed module (10) additionally comprises:
the feed module additionally comprises:
the feed module additionally comprises:
the third solenoid valve is, preferably, three-way.
the selecting body has a solid rectangular shape, with a mechanical interior that forms the internal circuit and a plurality of connection holes on its external surface that are connected to said internal circuit.
PEEK polyetheretherketone
the gas mixer comprises a homogenizing module that has:
the homogenizing module additionally comprises:
the second mixing deposit has one or more auxiliary inlet fittings, especially enabled to receive oxidizing gases and carry them directly towards the outlet fitting.
the non-return valve prevents said oxidizing gases from flowing in the opposite direction, which can seriously damage other sensitive components in the mixture, such as the flow regulators with inert gases, or any other type of component that is not compatible with this type of oxidizing or corrosive gas.
the mixer of the present invention comprises one balance outlet module that has:
Said balance outlet module sets up a circuit of balancing gas that connects to each feed module through one of the routes of the third solenoid valve.
the versatility of the gas mixer of the present invention allows for two separate pneumatic circuits formed by a circuit of inert gases and by a circuit of oxidizing gases, with the ability to operate interchangeably with inert gases and oxidizing gases.
a balancing gas circuit is added to these circuits, which comprises its own feed module, connecting to the rest of the feed modules of inert and/or oxidizing gases, and that has its own direct outlet through the balance outlet module.
Figures 1 and 2 show a perspective view and a plant view of the gas mixer (1) of the present invention respectively, where its inside can be seen.
the gas mixer (1) is of the type that comprises one or more feed modules (10) each one of them connectable to supply courses, not shown, of a first and of a second inlet gas, wherein each feed module (10) is designed to supply a feed gas selectable among the first and second inlet gas towards a flow regulator (20).
FIGS 3 and 4 show a first and second partial exploded perspective of the feed module (10) respectively.
the feed module (10) comprises:
the feed module (10) additionally comprises:
the feed module (10) additionally comprises:
the feed module (10) additionally comprises:
the feed module (10) comprises:
the third solenoid valve is not needed (12C), for example where a feed module (10) is connected to a supply source of balancing gas
said solenoid valve (12C) can easily be exchanged for a cap (16), without the need to modify the internal circuit (100) of the selecting body (11).
an elastic seal (18) can be used between the internal circuit (100) and the cap (16).
Figures 6A - 6K show in great detail, the design of the selecting body (11) and of the mechanical interior that forms the internal circuit (100).
the selecting body (11) has a solid rectangular shape, that has a mechanical interior that forms the internal circuit (100) and a plurality of holes arranged on the external surface thereof giving access to said internal circuit (100).
Figure 6A shows a first and a second inlet hole (101A, 101B) which receive the first and second inlet gas from the first (1A) and the second inlet channel (1B) respectively.
the threaded connection holes (102) can be observed which work together with the screws (133) allowing for the connection between the support body (13) and the selecting body (11), as well as auxiliary holes (103), which assist with the performance of the machine, and once in operation, they are sealed by pins (17), Figure 4 .
Figure 6B shows an outlet hole (104) of the selected feed gas, pressure regulation holes (105) that connect to the pressure regulator (14) and a balance inlet hole (106) that connects to the third inlet channel (1C) of the balancing gas.
Figure 6C shows some first opening and closing holes (107) of the path of the first inlet gas that connect a first two-way solenoid valve (12A), and some second opening and closing holes (108) of the second inlet gas that connect to a second two-way solenoid valve (12B)
some third opening and closing holes (110) can be observed that connect to a third three-way solenoid valve (12C), and allow to commute the flow of the selected feed gas or of the balancing gas towards the outlet channel (2).
a safety hole (111) that connects the safety pressure switch (15) can be observed.
Figures 6D - 6K show the continuity of the front holes in the interior of the selecting body (11), and how they are connected to each other to form the internal circuit (100).
FIGS 7A - 7C show the homogenizing module (30) in great detail.
the homogenizing module (30) comprises:
the homogenizing module (30) additionally comprises:
the second mixing deposit (39) has one or more auxiliary inlet fittings (302), especially enabled to receive oxidizing gases and carry them directly towards the outlet fitting (38).
FIG 8 shows the diagram of the operation of the mixer (1) of the present invention.
the mixer (1) is designed to work uninterruptedly, that is, without the need to manipulate the supply sources, with six different inert gases (three simultaneously), two different balancing gases (one simultaneously) and two different oxidizing gases (one simultaneously). Resulting in a highly versatile mixer (1).
the mixer (1) can work with either inert gases or oxidizing gases.
a balancing gas (4) is added to these circuits, represented by a dashed line without dots, which comprises its own feed module (10), connecting to the rest of the feed modules (10) of inert and/or oxidizing gases.
the mixer of the present invention comprises a balance outlet module (40) which includes:
Said balance outlet module (40) sets up a circuit of balancing gas (4) that connects to each feed module (10) through one of the routes of the third solenoid valve (12C), through the third inlet channel (1C).
the gas mixer (1) comprises a cleaning module (50) that is designed to operate as a vacuum system or by means of injecting inert gases.
Said cleaning module (50) comprises:
the gas mixer (1) comprises a leak detection module (60) which includes:
the leak control is designed to close and open the path of the cleaning channel acting on the cleaning solenoid valve (51), and in order to set the reference pressure, acting on the flow regulator of the cleaning gases (52).

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Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Accessories For Mixers (AREA)

EP12382490.6A 2012-12-10 2012-12-10 Gas mixer Not-in-force EP2740528B1 (en)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
ES12382490.5T ES2561900T3 (es)	2012-12-10	2012-12-10	Mezclador de gases
EP12382490.6A EP2740528B1 (en)	2012-12-10	2012-12-10	Gas mixer

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP12382490.6A EP2740528B1 (en)	2012-12-10	2012-12-10	Gas mixer

Publications (2)

Publication Number	Publication Date
EP2740528A1 EP2740528A1 (en)	2014-06-11
EP2740528B1 true EP2740528B1 (en)	2015-11-04

Family

ID=47603176

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP12382490.6A Not-in-force EP2740528B1 (en)	2012-12-10	2012-12-10	Gas mixer

Country Status (2)

Country	Link
EP (1)	EP2740528B1 (es)
ES (1)	ES2561900T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN112044299B (zh) *	2020-09-02	2022-09-27	青岛明华电子仪器有限公司	一种混气装置及安装有该装置的配气仪

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3000949A1 (de) *	1979-01-26	1980-08-28	Bi M Insutrument Co	Einrichtung und verfahren zur erzeugung eines eichgasgemisches sowie ventilanordnung hierfuer
DE2915983C2 (de) *	1979-04-20	1983-03-31	Klöckner Ionon GmbH, 5000 Köln	Verfahren zum Erzeugen eines Gasgemisches
DE102005038349B4 (de) *	2005-08-11	2008-04-10	Fritz Stephan Gmbh	Pneumatischer Nebenwiderstand sowie Gasmischer
US20070181126A1 (en) *	2006-02-08	2007-08-09	Tolmie Craig R	Method and apparatus for ventilating a patient with a breathing gas mixture formed from nitric oxide, air, and oxygen
US7575616B2 (en) *	2006-02-10	2009-08-18	Entegris, Inc.	Low-profile surface mount filter
JP5001757B2 (ja) *	2007-08-31	2012-08-15	シーケーディ株式会社	流体混合システム及び流体混合装置
JP5164794B2 (ja) *	2008-11-04	2013-03-21	小池酸素工業株式会社	ガス混合装置
FR2940624A1 (fr) *	2008-12-30	2010-07-02	Akhea	Dispositif melangeur d'au moins deux constituants gazeux

2012
- 2012-12-10 ES ES12382490.5T patent/ES2561900T3/es active Active
- 2012-12-10 EP EP12382490.6A patent/EP2740528B1/en not_active Not-in-force

Also Published As

Publication number	Publication date
ES2561900T3 (es)	2016-03-01
EP2740528A1 (en)	2014-06-11

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