CN102640965A - High voltage pulse electric field sterilization common-field treatment chamber with adjustable electrode distance - Google Patents
High voltage pulse electric field sterilization common-field treatment chamber with adjustable electrode distance Download PDFInfo
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- CN102640965A CN102640965A CN2011103577407A CN201110357740A CN102640965A CN 102640965 A CN102640965 A CN 102640965A CN 2011103577407 A CN2011103577407 A CN 2011103577407A CN 201110357740 A CN201110357740 A CN 201110357740A CN 102640965 A CN102640965 A CN 102640965A
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Abstract
The invention discloses a high voltage pulse electric field sterilization common-field treatment chamber with adjustable electrode distance. The treatment chamber consists of two metallic hollow tubular electrodes and an insulator isolation tube, wherein the insulator isolation tube is positioned in a treatment cavity formed between the two metallic hollow tubular electrodes. The metallic hollow tubular grounding electrodes are in threaded fit with the insulator isolation tube, so that the adjustability of the electrode distance in the common-field treatment chamber is realized. The inner ports of the metallic hollow tubular electrodes in the treatment chamber are rounded, so that the strength of a peak electric field nearby the electrodes is reduced, the 'discharge' problem caused by over high local electric field in the treatment chamber is solved, and the electric field in the flowing direction of a material is distributed relatively uniformly. The treatment chamber is simple in structure, low in cost, convenient to process and convenient to disassemble and assemble; the adjustability of the electrode distance in the common-field treatment chamber is realized; and the electrode distance in the treatment chamber can be adjusted according to different application requirements, so that the electric field strength and the electric field distribution in the treatment chamber are improved.
Description
Technical field
The present invention relates to a kind of high-pressure pulse electric sterilization process chamber altogether, the high-pressure pulse electric sterilization that particularly a kind of electrode spacing is adjustable is a process chamber altogether.
Background technology
Along with the raising day by day of living standard, people require to raise day by day to food quality.For keeping the minimal losses of food sense organ and nutritive value; Non-thermal sterilization technology begins to be widely used in the food processing; High-pressure pulse electric (pulsed electric field, be called for short PEF) sterilization technology is one of non-thermal sterilization technology of tool Industry Development Prospect.It is good that high voltage pulsation electric-field sterilizing tech has a bactericidal effect, generally can reduce 6 logarithm periods, and sterilizing time is short; Sterilization temperature is low, and chemical composition, outward appearance and the local flavor etc. of food are not had influence basically, and it is little to consume energy; Environmentally safe, non-secondary pollution and three wastes problem.
A complete PEF disinfection system mainly comprises four parts: high-voltage pulse generator, process chamber, fluid handling system and auxiliary monitoring system.Process chamber is the important component part of PEF disinfection system, and it is to be used for loading pending material and to deposit electrode, and in process chamber, directly applies high-pressure pulse electric.Process chamber generally has 2 electrodes, and the insulating materials formation of loading electrode.Whether flow according to material, process chamber is divided into static type and continous way; Be divided into flat, coaxial-type and three kinds of formulas altogether according to electrode form.
Electric-field intensity is the most important factor that influences the high-pressure pulse electric sterilization effect, and along with the increase of electric-field intensity, bactericidal effect obviously strengthens.In order to ensure good bactericidal effect, electric-field intensity generally is controlled in the 20-70kv/cm scope, and the square-wave pulse width that high-voltage pulse generator produces is controlled in 1 to the 10 μ s.Generally produce in the world at present with a process chamber altogether and carry out high-pressure pulse electric sterilization, in case but process chamber machine, the interior electrode spacing of process chamber is also immutable with regard to situation immutable, Electric Field Distribution.Electric-field intensity in the process chamber then depends on high-voltage pulse generator fully; High-voltage pulse generator produces high voltage, the square-wave pulse pulsewidth is little, pulse frequency is fast; Its technical difficulty is big, and cost is high, the restriction that these problems are serious the development and the application of high voltage pulsation electric-field sterilizing tech.
Summary of the invention
The invention provides the adjustable high-pressure pulse electric sterilization of an a kind of electrode spacing process chamber altogether; Purpose is that the fixing situation non-adjustable, Electric Field Distribution of a process chamber electrode spacing is also immutable altogether at present in solution; The present invention produces under identical voltage and the square-wave pulse condition and can change electric-field intensity and Electric Field Distribution situation in the process chamber through regulating electrode spacing at high-voltage pulse generator, and then promotes high voltage pulsation electric-field sterilizing tech development and application.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is following:
The high-pressure pulse electric sterilization that a kind of electrode spacing is an adjustable process chamber altogether is made up of metal hollow tubular grounding electrode, insulator isolated tube, metal hollow tubulose high-field electrode, charging aperture and discharging opening; The insulator isolated tube forms the process chamber cavity between metal hollow tubular grounding electrode and metal hollow tubulose high-field electrode; Metal hollow tubular grounding electrode links to each other with charging aperture, and metal hollow tubulose high-field electrode links to each other with discharging opening; Metal hollow tubular grounding electrode and insulator isolated tube have adopted flexible connection, can regulate the electrode spacing in the process chamber according to different application requirements, and the scope that electrode spacing is adjustable is provided with extreme electrode distance values and minimum electrode distance values.
Said flexible connection is that threaded engagement connects.
The mark that shows electrode spacing in the process chamber is carved with in metal hollow tubular grounding electrode outside, and electrode spacing is through screw thread control, and the port of the metal hollow hollow edged electrode in the process chamber is the inner port rounding.
For guaranteeing the stable durability of process chamber; Metal hollow hollow edged electrode material is chosen to be stainless steel 316L high temperature resistant, corrosion-resistant, that conduct electricity very well; The selected resistant of high or low temperature of the material of insulator isolated tube is good; Has outstanding not viscosity, PTFE (polytetrafluoroethylene (PTFE)) that decay resistance is outstanding or PFA (crossing the fluoroalkylation thing).
The high-pressure pulse electric sterilization that electrode spacing provided by the invention is an adjustable process chamber altogether can be regulated the electrode spacing in the process chamber according to different application requirements, and then improves electric-field intensity and Electric Field Distribution in the process chamber.The port of metal hollow hollow edged electrode is the inner port rounding; Can reduce near the spike electric-field intensity that exists the electrode; Improved " discharge " problem that inner treatment chamber causes because of internal field is too high, made that simultaneously the electric-field intensity distribution on the Flow of Goods and Materials direction is even relatively.In addition, the present invention is simple in structure, with low cost, easy to process, be convenient to dismounting, can promote the high voltage pulsation electric-field sterilizing tech development and uses.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the left view of Fig. 1 of the present invention.
Fig. 3 is the Electric Field Distribution isopleth sketch map of electrode spacing of the present invention when big.
Fig. 4 is an electrode spacing of the present invention Electric Field Distribution isopleth sketch map hour.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment content of the present invention is elaborated.
As depicted in figs. 1 and 2, a process chamber is by metal hollow tubular grounding electrode 1 altogether for the high-pressure pulse electric sterilization that electrode spacing provided by the invention is adjustable, and insulator isolated tube 2 is formed with metal hollow tubulose high-field electrode 3, charging aperture 4, discharging opening 5.Insulator isolated tube 2 forms the process chamber cavity between metal hollow tubular grounding electrode 1 and metal hollow tubulose high-field electrode 3, metal hollow tubular grounding electrode links to each other with charging aperture, and metal hollow tubulose high-field electrode links to each other with discharging opening.Metal hollow tubular grounding electrode 1 has adopted threaded engagement with insulator isolated tube 2, can regulate the electrode spacing in the process chamber according to different application requirements, and then improves electric-field intensity and Electric Field Distribution in the process chamber.The scope that electrode spacing is adjustable is provided with extreme electrode distance values and minimum electrode distance values, and is carved with the mark that shows electrode spacing in the process chamber in metal hollow tubular grounding electrode outside.Material flows into the process chamber cavity from charging aperture 4, and material flows out from discharging opening 5.The port of two metal hollow hollow edged electrodes in the process chamber is circular-arc; Can reduce near the spike electric-field intensity that exists the electrode; Improved " discharge " problem that inner treatment chamber causes because of internal field is too high; Make that simultaneously the electric-field intensity distribution on the Flow of Goods and Materials direction is even relatively, especially circular-arc better effects if when being the inner port rounding.
Metal hollow hollow edged electrode material is stainless steel 316L high temperature resistant, corrosion-resistant, that conduct electricity very well, the material of insulator isolated tube be resistant of high or low temperature good, have an outstanding outstanding polytetrafluoroethylene (PTFE) of not viscosity, decay resistance.
Fig. 3 is the Electric Field Distribution isopleth sketch map of electrode spacing of the present invention when big.When the high-voltage pulse generator output voltage is 15kV, electrode spacing is 5mm, can find out 30 Electric Field Distribution isopleth distribution situations among Fig. 3, and the average field intensity in the process chamber is 22.3644 (kV/cm).
Fig. 4 is an electrode spacing of the present invention Electric Field Distribution isopleth sketch map hour.When the high-voltage pulse generator output voltage is 15kV, electrode spacing is 2mm, and the average field intensity in the process chamber is 40.1964 (kV/cm), and comparison diagram 3 can find out obviously that 30 Electric Field Distribution isopleth are obviously more even.Therefore when sterilization processing, according to different application requirements, under the situation of the magnitude of voltage that does not change the high-voltage pulse generator generation, the electrode spacing of directly regulating in the process chamber obtains suitable electric-field intensity, thereby obtains better bactericidal effect.This equipment can directly apply to high-pressure pulse electric sterilization equipment, and simple use 1 complete equipment of realizing is implemented multiple treatment process, has effectively practiced thrift cost.
Though the present invention with preferred embodiment openly as above; But it is not in order to limiting the present invention, anyly is familiar with this technological people, is not breaking away from the spirit and scope of the present invention; All can do various changes and modification, so protection scope of the present invention should be as the criterion with what claims were defined.
Claims (6)
1. the adjustable high-pressure pulse electric sterilization of electrode spacing is total to a process chamber; It is made up of metal hollow tubular grounding electrode (1), insulator isolated tube (2), metal hollow tubulose high-field electrode (3), charging aperture (4) and discharging opening (5); Insulator isolated tube (2) is positioned at and forms the process chamber cavity between metal hollow tubular grounding electrode (1) and the metal hollow tubulose high-field electrode (3); Metal hollow tubular grounding electrode (1) links to each other with charging aperture (4); Metal hollow tubulose high-field electrode (3) link to each other with discharging opening (5); It is characterized in that: metal hollow tubular grounding electrode (1) adopts with insulator isolated tube (2) and flexibly connects, and the metal hollow tubular grounding electrode (1) in the process chamber is circular-arc with the inner port of metal hollow tubulose high-field electrode (3).
2. the described high-pressure pulse electric sterilization of claim 1 is total to a process chamber, it is characterized in that said flexible connection is that threaded engagement connects.
3. the described high-pressure pulse electric sterilization of claim 1 is total to a process chamber, it is characterized in that there is scale said metal hollow tubular grounding electrode (1) outer end, is used to show the electrode spacing in the process chamber.
4. the arbitrary described high-pressure pulse electric sterilization of claim 1-3 is total to a process chamber, it is characterized in that said electrode spacing is 1.5mm～10mm.
5. the arbitrary described high-pressure pulse electric sterilization of claim 1-3 is total to a process chamber, it is characterized in that the said circular-arc inner port rounding that is.
6. the arbitrary described high-pressure pulse electric sterilization of claim 1-3 is total to a process chamber; It is characterized in that said metal hollow tubular grounding electrode (1) and metal hollow tubulose high-field electrode (3) material are stainless steel 316L, the material of insulator isolated tube is polytetrafluoroethylene (PTFE) or crosses the fluoroalkylation thing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103577407A CN102640965A (en) | 2011-11-11 | 2011-11-11 | High voltage pulse electric field sterilization common-field treatment chamber with adjustable electrode distance |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102972846A (en) * | 2012-12-20 | 2013-03-20 | 南京信息工程大学 | Water-resistance type sterilization chamber in strong electromagnetic pulse fields |
| CN103637353A (en) * | 2013-12-26 | 2014-03-19 | 宋昊 | High-voltage electric field sterilizing device |
| CN104171767A (en) * | 2014-08-08 | 2014-12-03 | 江南大学 | High-voltage pulsed electric field sterilizing system coaxial processing chamber with adjustable runner shape |
| CN104880344A (en) * | 2015-04-23 | 2015-09-02 | 宁波中物光电杀菌技术有限公司 | Electric field sterilization test device |
| CN107410822A (en) * | 2017-05-11 | 2017-12-01 | 江南大学 | A kind of common field process chamber of the high-pressure pulse electric sterilization system based on fluid behaviour optimization |
| CN109195923A (en) * | 2016-04-20 | 2019-01-11 | Arc阿罗马珀尔公司 | The room PEF |
| CN111256406A (en) * | 2020-01-20 | 2020-06-09 | 珠海格力电器股份有限公司 | Electromagnetic preservation structure, electromagnetic preservation device and refrigeration equipment |
| CN113003664A (en) * | 2021-02-05 | 2021-06-22 | 广东凯达环保科技有限公司 | High-voltage pulse electric sterilization process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102972846A (en) * | 2012-12-20 | 2013-03-20 | 南京信息工程大学 | Water-resistance type sterilization chamber in strong electromagnetic pulse fields |
| CN103637353A (en) * | 2013-12-26 | 2014-03-19 | 宋昊 | High-voltage electric field sterilizing device |
| CN104171767A (en) * | 2014-08-08 | 2014-12-03 | 江南大学 | High-voltage pulsed electric field sterilizing system coaxial processing chamber with adjustable runner shape |
| CN104880344A (en) * | 2015-04-23 | 2015-09-02 | 宁波中物光电杀菌技术有限公司 | Electric field sterilization test device |
| CN109195923A (en) * | 2016-04-20 | 2019-01-11 | Arc阿罗马珀尔公司 | The room PEF |
| CN109195923B (en) * | 2016-04-20 | 2022-03-04 | Arc阿罗马珀尔公司 | PEF chamber |
| CN107410822A (en) * | 2017-05-11 | 2017-12-01 | 江南大学 | A kind of common field process chamber of the high-pressure pulse electric sterilization system based on fluid behaviour optimization |
| CN111256406A (en) * | 2020-01-20 | 2020-06-09 | 珠海格力电器股份有限公司 | Electromagnetic preservation structure, electromagnetic preservation device and refrigeration equipment |
| CN113003664A (en) * | 2021-02-05 | 2021-06-22 | 广东凯达环保科技有限公司 | High-voltage pulse electric sterilization process |
| CN113003664B (en) * | 2021-02-05 | 2021-10-29 | 广东凯达环保科技有限公司 | High-voltage pulse electric sterilization process |
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Application publication date: 20120822 |