CN110467157A - High concentration low energy consumption ozone generator - Google Patents
High concentration low energy consumption ozone generator Download PDFInfo
- Publication number
- CN110467157A CN110467157A CN201910933730.XA CN201910933730A CN110467157A CN 110467157 A CN110467157 A CN 110467157A CN 201910933730 A CN201910933730 A CN 201910933730A CN 110467157 A CN110467157 A CN 110467157A
- Authority
- CN
- China
- Prior art keywords
- shell
- conductive metal
- several
- dielectric substance
- electrode
- Prior art date
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/10—Preparation of ozone
- C01B13/11—Preparation of ozone by electric discharge
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2201/00—Preparation of ozone by electrical discharge
- C01B2201/10—Dischargers used for production of ozone
- C01B2201/14—Concentric/tubular dischargers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2201/00—Preparation of ozone by electrical discharge
- C01B2201/60—Feed streams for electrical dischargers
- C01B2201/62—Air
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2201/00—Preparation of ozone by electrical discharge
- C01B2201/70—Cooling of the discharger; Means for making cooling unnecessary
- C01B2201/74—Cooling of the discharger; Means for making cooling unnecessary by liquid
- C01B2201/76—Water
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The invention discloses a kind of high concentration low energy consumption ozone generators, it includes a shell, an air inlet and a gas outlet are provided on shell, several discharge cells are provided in shell, each discharge cell includes a high-field electrode, a conductive metal mesh, a dielectric substance and a grounding electrode, high-field electrode, conductive metal mesh, dielectric substance and grounding electrode are set gradually from inside to outside, and discharging gap is provided between dielectric substance and grounding electrode, has clean compressed air to pass through in the hole of conductive metal mesh.The high-precision technique of ozone discharge cell increases substantially electric discharge along face and discharging gap error in ± 0.01mm and discharge stability, and the invention enables high-field electrode electric discharge is uniform.Electric current output is stablized, and equipment energy consumption reduces by 5%, ozone concentration promotion 15%, equipment life extends to 15 years.
Description
Technical field
The present invention relates to a kind of high concentration low energy consumption ozone generators.
Background technique
Ozone generator is for producing ozone gas (O3) device, it is single that current ozone generator generally comprises electric discharge
Member, discharge cell include high-field electrode, dielectric substance and grounding electrode, high-field electrode, dielectric substance and grounding electrode from inside to outside according to
Secondary setting, is provided with discharging gap between dielectric substance and grounding electrode, in this way, after air enters in discharging gap, high pressure
Electrode is powered, to carry out high pressure ionization to the air in discharging gap, so that the oxygen decomposition in air is polymerized to ozone.
However, the contact surface of high-field electrode and dielectric substance often exists in the discharge cell of current ozone generator
Uneven, discharging gap is uneven, so that high-field electrode is unable to fully contact with dielectric substance, so that high-field electrode
Electric discharge is uneven, to influence the ionization effect to oxygen.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of high concentration low energy consumption ozone generators, make high pressure
Electrode discharge is uniform.
In order to solve the above technical problems, high concentration low energy consumption ozone generator provided by the invention, it includes a shell, shell
It is provided with an air inlet and a gas outlet on body, several discharge cells are provided in shell, each discharge cell includes one high
Piezoelectricity pole, a conductive metal mesh, a dielectric substance and a grounding electrode, high-field electrode, conductive metal mesh, dielectric substance and grounding electrode
It sets gradually from inside to outside, discharging gap is provided between dielectric substance and grounding electrode, has air in the hole of conductive metal mesh
Pass through.
Preferably, the high-field electrode is cylindrical, conductive metal mesh, dielectric substance and grounding electrode are in sleeve
Shape, high-field electrode, conductive metal mesh, dielectric substance and grounding electrode are successively nested with from inside to outside.
Preferably, being provided with a supporting element in the discharging gap, supporting element is made of insulating material, and supporting element is in
It strip and is extended spirally along the length direction of high-field electrode, supporting element is respectively and in the periphery wall and grounding electrode of dielectric substance
Peripheral wall offsets.
Preferably, being provided with a frame body in the shell, the frame body includes two pieces of partitions, two pieces of partitions
Be arranged along the length direction interval of shell, weeks of two pieces of partitions along being tightly connected with the inner wall of shell, two pieces of partitions and shell
It is enclosed seal chamber, the inlet and outlet being connected with seal chamber are provided on shell；The frame body further includes
Several tube bodies, the both ends of each tube body are connect with two pieces of bulkhead seals respectively, and it is logical that several are provided on two pieces of partitions
Hole, the through-hole on two pieces of partitions are arranged in a one-to-one correspondence with tube body, and the both ends of each tube body coaxially connect with corresponding through-hole
Logical, several discharge cells are arranged in correspondingly in several tube bodies, each tube body with respectively manage intracorporal high-voltage electricity
Pole is coaxially set；
Shell, two pieces of partitions and several tube bodies are made of electrically conductive material, several tube bodies pass through partition and shell
It is conductively connected, each tube body is used as the grounding electrode for respectively managing intracorporal discharge cell, frame ground；
On the axis direction of tube body, frame body is between air inlet and air outlet.
Preferably, the shell is cylindrical, several described tube bodies are parallel with the axis of shell, several
A tube body is distributed around the axis spiral spacer of shell, and in the hand of spiral around the axis of shell, and arbitrary neighborhood two
Tube body passes through several conductive metal bodies and is connected.
After using the above structure, compared with prior art, the present invention having the advantage that
In the discharge cell of ozone generator of the invention, conductive metal is provided between high-field electrode and dielectric substance
Net, in this way, high-field electrode is in electric discharge, high-field electrode can conduct the current to conductive metal mesh, conductive metal mesh and dielectric
The full and uniform contact of body, so that high-field electrode can be by dielectric substance Uniform Discharge, and conductive metal mesh can be effective
Guidance air-flow be evenly distributed on high-field electrode surface, it is (or pure conducive to the oxygen in the Uniform Discharge and air of high-field electrode
Oxygen) reaction generation ozone, the high-precision technique of ozone discharge cell is to electric discharge along face and discharging gap error in ± 0.01mm
It is increased substantially with discharge stability, electrion is uniform, electric current output is stablized, and equipment energy consumption reduces by 5%, ozone concentration and promoted
15%, equipment life extends to 15 years.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of discharge cell.
Specific embodiment
Present invention will be explained in further detail with reference to the accompanying drawings and detailed description.
As shown in Fig. 1, Fig. 2, high concentration low energy consumption ozone generator of the invention includes a shell 1 and a high-tension transformer
200, an air inlet 103 and a gas outlet 104 are provided on shell 1, several discharge cells 100, high pressure are provided in shell 1
Transformer 200 is used to power for discharge cell, and air enters in shell 1 from air inlet 103, then 100 pairs of skies of discharge cell
Gas carries out high pressure ionization, so that the partial oxidation decomposition in air is polymerized to ozone, then ozone is discharged from gas outlet 104.
Each discharge cell 100 includes a high-field electrode 2, a conductive metal mesh 3, a dielectric substance 4 and a grounding electrode 5,
High-field electrode 2 is made of 304 stainless steels, and conductive metal mesh 3 is made of 316 stainless steels, and dielectric substance 4 is made of quartz material, connects
Ground electrode 5 is made of 304 stainless steels, and high-field electrode 2, conductive metal mesh 3, dielectric substance 4 and grounding electrode 5 are successively set from inside to outside
It sets, discharging gap 6 is provided between dielectric substance 4 and grounding electrode 5, has air to pass through in the hole of conductive metal mesh 3, high-voltage electricity
In electric discharge, high-field electrode 2 can conduct the current to conductive metal mesh 3, and conductive metal mesh 3 and dielectric substance 4 are full and uniform for pole 2
Contact so that high-field electrode 2 can be by 4 Uniform Discharge of dielectric substance, and conductive metal mesh 3 can be guided effectively
Air-flow is evenly distributed on 2 surface of high-field electrode, Uniform Discharge and heat dissipation conducive to high-field electrode 2, while reducing discharge cell
The uniformity and machining accuracy to discharging gap according to lazyness.
The high-field electrode 2 is cylindrical, and conductive metal mesh 3, dielectric substance 4 and grounding electrode 5 are in sleeve-shaped, high pressure
Electrode 2, conductive metal mesh 3, dielectric substance 4 and grounding electrode 5 are successively nested with from inside to outside.
A supporting element 7 is provided in the discharging gap 6, supporting element 7 is made of polytetrafluoroethylene (PTFE), and supporting element 7 is in length
Strip and extended spirally along the length direction of high-field electrode 2, supporting element 7 respectively with the periphery wall of dielectric substance 4 and grounding electrode 5
Internal perisporium offsets, in this way, supporting element 7 plays a supporting role to dielectric substance 4 and grounding electrode 5, so that dielectric substance 4 and grounding electrode
5 spacing is uniform, and the spacing for also allowing for discharging gap 6 is uniform, so that the spacing of entire discharging gap 6 all maintains 0.25mm
Left and right.
A frame body is provided in the shell 1, the frame body includes two pieces of partitions 8, and two pieces of partitions 8 are along shell
1 length direction interval setting, weeks of two pieces of partitions 8 is along with the inner wall sealing welding of shell 1, two pieces of partitions 8 enclose with shell 1
Conjunction forms seal chamber 9, the water inlet 101 and water outlet 102 being connected with seal chamber 9 is provided on shell 1, in this way, cooling water
It can be entered in seal chamber 9 by water inlet 101, cooling water is discharged after absorbing heat from water outlet 102, and such cooling water can
To radiate when discharge cell is discharged to discharge cell；The frame body further includes several tube bodies 10, each
The both ends of tube body 10 are respectively with two pieces of 8 sealing weldings of partition, and the both ends of each tube body 10 are openning shape, on two pieces of partitions 8
Several through-holes 801 are provided with, the through-hole 801 on two pieces of partitions 8 is arranged in a one-to-one correspondence with tube body 10, each tube body 10
Both ends with corresponding 801 coaxial communication of through-hole, in this way, air can after air enters in shell 1 from air inlet 103
To enter in each tube body 10, several discharge cells 100 are arranged in several tube bodies 10 correspondingly, each tube body
10 are coaxially set with the high-field electrode 2 in respective tube body 10.
1, two piece of partition 8 of shell and several tube bodies 10 are made of electrically conductive material, several tube bodies 10 pass through partition 8
It is conductively connected with shell 1, each tube body 10 is used as the grounding electrode 5 of the discharge cell 100 in respective tube body 10, also
It is to say that tube body 10 and grounding electrode 5 are the same parts, shell 1 is grounded.
On the axis direction of tube body 10, frame body is between air inlet 103 and gas outlet 104.
In this way, air enters in each tube body 10 after air enters in shell 1 from air inlet 103, then discharge
Unit carries out high pressure ionization to the air in tube body 10 to generate ozone, then ozone effuser body 10 passes through 104 row of gas outlet
Out, and tube body 10 is used as grounding electrode, tube body 10 is mutually conductive by partition 8 and shell 1, so that tube body 10 is connect by shell 1
Ground.
In this way, frame body can be used to be passed through cooling water to radiate to discharge cell, frame body is also used as
The grounding electrode of discharge cell uses, so that frame body is vdiverse in function.
Also, after air enters in shell 1 from air inlet 103, air can enter the hole of conductive metal mesh 3
In and along the surface flow of conductive metal mesh 3 so that air can be evenly distributed on 2 surface of high-field electrode, be conducive to high pressure
The Uniform Discharge of electrode 2 and heat dissipation.
The shell 1 is cylindrical, several described tube bodies 10 are parallel with the axis of shell 1, several pipes
Body 10 is distributed around the axis spiral spacer of shell 1, and in the hand of spiral around the axis of shell 1, and arbitrary neighborhood two
Tube body 10 is connected by several conductive metal bodies, in this way, conductive metal body can make the mutual position of tube body 10
It is firm, avoid tube body 10 from deforming and make the spacing of discharging gap 6 uneven, and conductive metal body is also possible that pipe
Body 10 is mutually conductive, and tube body 10 can be made preferably to be grounded.
The foregoing is only a description of the preferred application of the present invention, but is not to be construed as the limit to claim
System, structure of the invention can have other variations, be not limited to above structure.In short, all in independent claims of the invention
Protection scope in made various change be within the scope of the invention.
Claims (5)
1. a kind of high concentration low energy consumption ozone generator, it includes a shell (1), is provided with an air inlet (103) on shell (1)
With a gas outlet (104), shell (1) is interior to be provided with several discharge cells (100), which is characterized in that each discharge cell
It (100) include a high-field electrode (2), a conductive metal mesh (3), a dielectric substance (4) and a grounding electrode (5), high-field electrode
(2), conductive metal mesh (3), dielectric substance (4) and grounding electrode (5) are set gradually from inside to outside, dielectric substance (4) and grounding electrode
(5) it is provided between discharging gap (6), there is air to pass through in the hole of conductive metal mesh (3).
2. high concentration low energy consumption ozone generator according to claim 1, which is characterized in that the high-field electrode (2)
Cylindrical, conductive metal mesh (3), dielectric substance (4) and grounding electrode (5) are in sleeve-shaped, high-field electrode (2), conductive metal
Net (3), dielectric substance (4) and grounding electrode (5) are successively nested with from inside to outside.
3. high concentration low energy consumption ozone generator according to claim 2, which is characterized in that the discharging gap (6)
It is inside provided with a supporting element (7), supporting element (7) is made of insulating material, and supporting element (7) is in long strip and along high-field electrode (2)
Length direction extend spirally, internal perisporium of the supporting element (7) respectively with the periphery wall of dielectric substance (4) and grounding electrode (5) offsets.
4. high concentration low energy consumption ozone generator according to claim 3, which is characterized in that set in the shell (1)
It is equipped with a frame body, the frame body includes two pieces of partitions (8), and two pieces of partitions (8) set along the length direction interval of shell (1)
It sets, the week of two pieces of partitions (8), two pieces of partitions (8) were enclosed close with shell (1) along being tightly connected with the inner wall of shell (1)
It seals chamber (9), is provided with the water inlet (101) and water outlet (102) being connected with seal chamber (9) on shell (1)；The frame
Body further includes several tube bodies (10), and the both ends of each tube body (10) are tightly connected with two pieces of partitions (8) respectively, two pieces of partitions
(8) several through-holes (801) are provided on, the through-hole (801) on two pieces of partitions (8) is corresponded with tube body (10) and set
It sets, with corresponding through-hole (801) coaxial communication, several discharge cells (100) one are a pair of at the both ends of each tube body (10)
The setting answered in several tube bodies (10), each tube body (10) with high-field electrode (2) coaxial line in respective tube body (10)
Setting；
Shell (1), two pieces of partitions (8) and several tube bodies (10) are made of electrically conductive material, several tube bodies (10) pass through
Partition (8) and shell (1) are conductively connected, each tube body (10) connecing as discharge cell (100) in respective tube body (10)
Ground electrode (5) uses, shell (1) ground connection；
On the axis direction of tube body (10), frame body is located between air inlet (103) and gas outlet (104).
5. high concentration low energy consumption ozone generator according to claim 4, which is characterized in that the shell (1) is in circle
Tubular, several described tube bodies (10) are parallel with the axis of shell (1), several tube bodies (10) are around shell (1)
The distribution of axis spiral spacer, and in the hand of spiral around the axis of shell (1), two tube bodies (10) of arbitrary neighborhood pass through
Several conductive metal bodies are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933730.XA CN110467157A (en) | 2019-09-29 | 2019-09-29 | High concentration low energy consumption ozone generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910933730.XA CN110467157A (en) | 2019-09-29 | 2019-09-29 | High concentration low energy consumption ozone generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110467157A true CN110467157A (en) | 2019-11-19 |
Family
ID=68516887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910933730.XA Withdrawn CN110467157A (en) | 2019-09-29 | 2019-09-29 | High concentration low energy consumption ozone generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110467157A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5547644A (en) * | 1994-09-21 | 1996-08-20 | Electronic Drilling Control, Inc. | Ozone generation system |
| CN2477607Y (en) * | 2001-02-28 | 2002-02-20 | 郭俊杰 | Efficiency coiling ozone generator |
| CN1347388A (en) * | 1999-03-05 | 2002-05-01 | 奥佐纳托有限公司 | Ozone generator and method for generation of ozone |
| CN1565960A (en) * | 2003-07-02 | 2005-01-19 | 华仕德科技股份有限公司 | Ozonizer |
| CN201209121Y (en) * | 2007-10-18 | 2009-03-18 | 多元水环保技术产业(中国)有限公司 | High efficient ozone generator |
| CN201990484U (en) * | 2011-03-03 | 2011-09-28 | 张国五 | Novel ozone generator with double-side multi-point discharge structure |
| CN102390815A (en) * | 2011-11-15 | 2012-03-28 | 青岛国林实业股份有限公司 | Ozone generating unit and ozone generator |
| CN202246059U (en) * | 2011-10-12 | 2012-05-30 | 陈勇 | Glass dielectric barrier double-gap ozone discharge chamber |
| CN202430004U (en) * | 2011-12-18 | 2012-09-12 | 江苏康尔臭氧有限公司 | Dual-air gap ozone generation device |
| CN203006947U (en) * | 2012-12-24 | 2013-06-19 | 江苏康尔臭氧有限公司 | Discharging unit for ozone generator |
| CN103159182A (en) * | 2011-12-18 | 2013-06-19 | 江苏康尔臭氧有限公司 | Double-air-gap ozone generating device |
| JP2014172791A (en) * | 2013-03-11 | 2014-09-22 | Ricoh Co Ltd | Ozone generator |
| CN206051544U (en) * | 2016-08-24 | 2017-03-29 | 北京渤浪岛环保技术有限公司 | Ozone generator with vertical pipes |
| KR101935011B1 (en) * | 2018-06-27 | 2019-01-03 | 재단법인 한국환경산업연구원 | ozone generator |
-
2019
- 2019-09-29 CN CN201910933730.XA patent/CN110467157A/en not_active Withdrawn
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5547644A (en) * | 1994-09-21 | 1996-08-20 | Electronic Drilling Control, Inc. | Ozone generation system |
| CN1347388A (en) * | 1999-03-05 | 2002-05-01 | 奥佐纳托有限公司 | Ozone generator and method for generation of ozone |
| CN2477607Y (en) * | 2001-02-28 | 2002-02-20 | 郭俊杰 | Efficiency coiling ozone generator |
| CN1565960A (en) * | 2003-07-02 | 2005-01-19 | 华仕德科技股份有限公司 | Ozonizer |
| CN201209121Y (en) * | 2007-10-18 | 2009-03-18 | 多元水环保技术产业(中国)有限公司 | High efficient ozone generator |
| CN201990484U (en) * | 2011-03-03 | 2011-09-28 | 张国五 | Novel ozone generator with double-side multi-point discharge structure |
| CN202246059U (en) * | 2011-10-12 | 2012-05-30 | 陈勇 | Glass dielectric barrier double-gap ozone discharge chamber |
| CN102390815A (en) * | 2011-11-15 | 2012-03-28 | 青岛国林实业股份有限公司 | Ozone generating unit and ozone generator |
| CN202430004U (en) * | 2011-12-18 | 2012-09-12 | 江苏康尔臭氧有限公司 | Dual-air gap ozone generation device |
| CN103159182A (en) * | 2011-12-18 | 2013-06-19 | 江苏康尔臭氧有限公司 | Double-air-gap ozone generating device |
| CN203006947U (en) * | 2012-12-24 | 2013-06-19 | 江苏康尔臭氧有限公司 | Discharging unit for ozone generator |
| JP2014172791A (en) * | 2013-03-11 | 2014-09-22 | Ricoh Co Ltd | Ozone generator |
| CN206051544U (en) * | 2016-08-24 | 2017-03-29 | 北京渤浪岛环保技术有限公司 | Ozone generator with vertical pipes |
| KR101935011B1 (en) * | 2018-06-27 | 2019-01-03 | 재단법인 한국환경산업연구원 | ozone generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107807196B (en) | Dielectric barrier discharge ionization detector | |
| CN103958399B (en) | Tubular ozone generates device and manufacture method thereof | |
| JP5048714B2 (en) | Ozone generator | |
| CN107807167B (en) | Dielectric barrier discharge ionization detector | |
| WO2002062412A1 (en) | Method and device for forming an no-containing gas flow for affecting a biological object | |
| WO2018205758A1 (en) | Apparatus for producing oxygen active substance by means of mesh-shaped creeping discharge plasma | |
| CN108408843B (en) | Plasma activated water generating device | |
| CN201209121Y (en) | High efficient ozone generator | |
| CN203761669U (en) | Atmospheric pressure cold plasma generator capable of being used for wound healing | |
| CN103781271A (en) | Atmospheric pressure cold plasma generating device for wound healing | |
| JP6196913B2 (en) | Tube type ozone generator | |
| CN110467157A (en) | High concentration low energy consumption ozone generator | |
| CN108325351A (en) | A kind of double medium low temperature plasma gas purifiers of electromagnetic induction coupling | |
| CN108339379A (en) | Double medium low-temperature plasma emission-control equipments are coupled based on electromagnetic induction | |
| CN110418484B (en) | Air jet discharge generating device | |
| JP5395142B2 (en) | Ozone generator | |
| CN110392478B (en) | Anti-phase double-high-pressure three-ring structure safety jet device | |
| CN108607338A (en) | A kind of annular emission-control equipment component | |
| CN105344212A (en) | Single-dielectric barrier low temperature plasma discharge module | |
| JP4393878B2 (en) | Static eliminator | |
| CN216512867U (en) | Miniature quartz tube ozone generator | |
| EP4023592A1 (en) | Long-life discharge tube for ozone generator | |
| CN219068443U (en) | Plasma jet generating assembly and skin therapeutic apparatus | |
| CN210171166U (en) | Double-dielectric barrier discharge plasma peculiar smell treatment device | |
| CN216087087U (en) | Intermediate frequency linear plasma radiation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191119 |