CN109186147A - Adjoining pipe hydrojet defrosting heat source tower heat pump device - Google Patents
Adjoining pipe hydrojet defrosting heat source tower heat pump device Download PDFInfo
- Publication number
- CN109186147A CN109186147A CN201811002442.4A CN201811002442A CN109186147A CN 109186147 A CN109186147 A CN 109186147A CN 201811002442 A CN201811002442 A CN 201811002442A CN 109186147 A CN109186147 A CN 109186147A
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- China
- Prior art keywords
- pipe
- heat
- adjoining
- freezing solution
- exchange coil
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to adjoining pipe hydrojet defrosting heat source tower heat pump devices, including heat source tower tower body, fin adjoining pipe liquid supply pipe, heat exchange coil, exhaust fan, several fin adjoining pipes, if dry coil pipe adjoining pipe, main liquid supply pipe, several fins, anti-freezing solution pond, feed flow check-valves, anti-freezing solution solution feed pump, filter, concentration meter, permeate film device, four-way valve, gas-liquid separator, compressor, capillary, device for drying and filtering, heat exchanger, heating condition: refrigerant enters heat exchanger by four-way valve after compressor compresses are at high temperature and high pressure steam, device for drying and filtering is flowed into heat exchanger exothermic condensation, refrigerant through dry filter flows through auxiliary capillary and enters heat exchange coil, the refrigerant of heat exchange coil outflow enters four-way valve and enters gas-liquid separator, the air inlet for entering compressor from another outlet of gas-liquid separator again is handled through gas-liquid separator, start next A circulation；Cooling condition circulation is opposite with heating condition；The device is simple with structure, occupies little space, is light-weight, and defrosting effect is good.
Description
Technical field
It defrosts heat source tower heat pump device the present invention relates to a kind of adjoining pipe hydrojet, is primarily adapted for use in miniaturization, household closes
Formula heat source tower heat pump system, belongs to technical field of air conditioner refrigeration.
Background technique
The Defrost mode of the current heat source tower heat pump system in China is that dedicated spray is vacantly installed above heat exchange coil
Device sprays anti-icing fluid, uses in large-scale heat source tower heat pump system and vacantly installs dedicated spray equipment sprinkling anti-icing fluid defrosting
Effect is relatively good, but if by heat source tower heat pump system compact, household, dedicated spray equipment just have it is many it is unfavorable it
Place.First is that occupied space is big, including the sprinkling equipments such as pressure pump, pipeline and nozzle have biggish volume, are unfavorable for heat source
The miniaturization of tower heat pump system and household installation.Second is that weight is big, in order to guarantee that necessary pressure when spray and flow, system are necessary
It is equipped with the biggish pressure pump of power, the pipeline and nozzle being relatively large in diameter, these facilities have biggish weight.Third is that anti-icing fluid
Drift ease the problem of, when the nozzle of suspension sprays anti-icing fluid, form more atomized particles, under the suction of exhaust fan these
Atomized particles can be arranged with air-flow to aerial, there is certain damage to the environment of surrounding.It is then desired to find a kind of removing for simplicity
White device and method realize the miniaturization of heat source tower heat pump system, household.
Summary of the invention
In order to overcome existing heat source tower heat pump system to spray various deficiencies that anti-icing fluid defrosts using dedicated spray equipment,
The present invention provides a kind of adjoining pipe hydrojet defrosting heat source tower heat pump device, and since the device has, structure is simple, occupies little space, again
Measure lighter, anti-icing fluid is flowed out against frosting member upper in the hole of adjoining pipe hydrojet during defrosting, by anti-icing fluid from frosting
The top of component is soaked down overflows all frosting components, there is the effect of cleaning, thus it is more comprehensive to defrost, and also overcomes antifreeze liquid mist
The problem of ease is floated after change.
The technical scheme is that
Adjoining pipe hydrojet defrosting heat source tower heat pump device, including heat source tower tower body, fin adjoining pipe liquid supply pipe, heat exchange coil, pumping
If blower, several fin adjoining pipes, dry coil pipe adjoining pipe, main liquid supply pipe, several fins, anti-freezing solution pond, feed flow check-valves, anti-freeze-thaw
Liquid solution feed pump, filter, concentration meter, infiltration film device, four-way valve, gas-liquid separator, compressor, capillary, device for drying and filtering,
Heat exchanger, it is characterised in that:
Heat exchange coil, exhaust fan, anti-freezing solution pond, anti-freezing solution solution feed pump, filter, infiltration film device, gas-liquid separation
Device, compressor, device for drying and filtering, heat exchanger are separately mounted in heat source tower tower body；Heat source tower tower body is equipped with air inlet；
Several fins are stuck on heat exchange coil, and every layer of heat exchange coil is equipped with a coil pipe adjoining pipe, every piece of fin top
Portion is equipped with a fin adjoining pipe, and several holes are equipped in fin adjoining pipe and coil pipe adjoining pipe, all fin adjoining pipes and fin adjoining pipe
Liquid supply pipe is connected, and the coil pipe adjoining pipe and fin adjoining pipe liquid supply pipe are connected with main liquid supply pipe；
Concentration meter is installed, anti-freezing solution pond two sides are equipped with delivery outlet, and a delivery outlet passed through in anti-freezing solution pond
Filter is connected with anti-freezing solution solution feed pump, and anti-freezing solution solution feed pump is connected by feed flow check-valves with main liquid supply pipe, another is defeated
Outlet connection infiltration film device input terminal, the high concentrations of solutes recovery port for permeating film device are connected to anti-freezing solution pond, permeable membrane
Equipment is directly externally discharged without solute purification water outlet；
Four-way valve respectively with one one interface of heat exchange coil, gas-liquid separator entrance, compressor outlet, heat exchanger interface
Be connected, another interface of heat exchange coil is connected by capillary with device for drying and filtering, device for drying and filtering and heat exchanger another connect
Mouth is connected, and gas-liquid separator outlet is connected with compressor inlet；Heat exchanger duty side is equipped with circulation port, and load side is equipped with circulation
Mouth connects indoor terminal.
The invention also includes water supply pipe, water make-up check valve, water supply solenoid valve, fluid level controller, water supply pipe is mounted on heat source
On tower tower body, fluid level controller is mounted in anti-freezing solution pond, and water supply pipe outlet is connected in anti-freezing solution pond, water supply pipe installation
There are water make-up check valve and water supply solenoid valve, fluid level controller controls water supply solenoid valve.
The anti-freezing solution bottom of pond portion is equipped with sewage draining exit.
The capillary is made of main capillary, check valve, assisted capillary, after check valve is in parallel with assisted capillary
It connects, is connected between one interface of device for drying and filtering and heat exchange coil with main capillary.
The present invention have compared with prior art it is following the utility model has the advantages that
1, it occupies little space.Adjoining pipe hydrojet need to only nestle up the surface installation adjoining pipe of heat exchange coil, structure except defrosting system
It is compact, occupied space very little.Due to not needing the pressure of very big spray, the water pump of outfit is also relatively small, the space occupied
Also it greatly reduces.
2, weight is lighter.Since solution feed pump is lighter, liquid supply pipe is thinner also relatively lighter, also without nozzle, thus it is total
Body weight is opposite to be mitigated.
3, it defrosts more comprehensive.During defrosting, anti-icing fluid is sprayed by the adjoining pipe against frosting member upper, will be prevented
Jelly liquid soaks down from the top of frosting component overflows all frosting components, there is the effect of cleaning, thus it is more comprehensive to defrost, more thorough
Bottom.
4, the problem of escaping is floated after also overcoming anti-icing fluid atomization.Adjoining pipe hydrojet abuts frosting component except the spray hole of defrosting system
Top outflow anti-icing fluid will not generate atomized particles, float ease after solving the problems, such as anti-icing fluid atomization substantially.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
In conjunction with attached drawing, the invention will be further described.
As shown in Fig. 1, the present invention include heat source tower tower body 1, fin adjoining pipe liquid supply pipe 2, heat exchange coil 3, exhaust fan 4,
If several fin adjoining pipes 5, main liquid supply pipe 8, several fins 9, anti-freezing solution pond 10, feed flow check-valves 11, are prevented at dry coil pipe adjoining pipe 6
Freeze-thaw liquid solution feed pump 12, filter 13, water make-up check valve 14, water supply solenoid valve 15, fluid level controller 16, concentration meter 19, infiltration
Film device 20, four-way valve 22, gas-liquid separator 23, compressor 24, capillary, device for drying and filtering 28, heat exchanger 29, feature exists
In: heat exchange coil 3, exhaust fan 4, anti-freezing solution pond 10, anti-freezing solution solution feed pump 12, filter 13, infiltration film device 20, gas-liquid
Separator 23, compressor 24, device for drying and filtering 28, heat exchanger 29 are separately mounted in heat source tower tower body 1；On heat source tower tower body 1
Equipped with air inlet 7；Several fins 9 are stuck on heat exchange coil 3, and every layer of heat exchange coil 3 is equipped with a coil pipe adjoining pipe 6, often
It is equipped with a fin adjoining pipe 5 at the top of block fin 9, and is equipped with several holes in fin adjoining pipe 5 and coil pipe adjoining pipe 6, it is anti-for spraying
Freeze-thaw liquid allows anti-freezing solution leaching to overflow the outer surface of all heat exchange coil and fin, eliminates heat exchange coil and fin outer surface
Frost.All fin adjoining pipes 5 are connected with fin adjoining pipe liquid supply pipe 2, the coil pipe adjoining pipe 6 and fin adjoining pipe liquid supply pipe 2 and main confession
Liquid pipe 8 is connected；Fluid level controller 16 and concentration meter 19 are installed, fluid level controller 16 controls moisturizing electromagnetism in anti-freezing solution pond 10
Valve 15,10 two sides of anti-freezing solution pond are equipped with delivery outlet, and bottom is equipped with sewage draining exit 17, and a delivery outlet is by filter 13 and prevents
Freeze-thaw liquid solution feed pump 12 is connected, and anti-freezing solution solution feed pump 12 is connected by feed flow check-valves 11 with main liquid supply pipe 8, water supply pipe installation
On heat source tower tower body, water supply pipe outlet is connected in anti-freezing solution pond, and water supply pipe is equipped with water make-up check valve 14 and moisturizing electricity
Magnet valve 15；Another delivery outlet connection infiltration 20 input terminal of film device, the high concentrations of solutes recovery port 18 of infiltration film device 20 connect
It is connected to anti-freezing solution pond 10, stretching out without solute purification water outlet 21 for infiltration film device 20 is directly right except heat source tower tower body 1
Outer discharge；The capillary is made of main capillary 25, check valve 26, assisted capillary 27, check valve 26 and auxiliary capillary
Connect after 27 parallel connection of pipe with main capillary 25, four-way valve 22 respectively with 3 one interfaces of heat exchange coil, 23 entrance of gas-liquid separator,
29 1 outlet of compressor 24, heat exchanger interfaces are connected, another interface of heat exchange coil 3 passes through main capillary 25 and auxiliary capillary
Pipe 27 is connected with device for drying and filtering 28, and device for drying and filtering 28 is connected with another interface of heat exchanger 29, and gas-liquid separator 23 exports
It is connected with 24 air inlet of compressor；29 load side of heat exchanger is equipped with circulation port 30, and load side is equipped with circulation port 30 and connects indoor terminal.
Exhaust fan 4 of the invention, filter 13, fluid level controller 16, concentration meter 19, infiltration film device 20, gas-liquid separation
Device 23, compressor 24, device for drying and filtering 28, heat exchanger 29 are existing structure.
As shown in Figure 1, filling anti-freezing solution, compressor after system energization in anti-freezing solution pond 10 when using the present invention
24 and exhaust fan 4 it is in running order.When the device of the invention runs on heating condition, refrigerant is compressed into height by compressor 24
Enter four-way valve 22 after warm high steam, enters heat exchanger 29 from an interface A along solid arrow direction, refrigerant is in heat exchanger 29
Exothermic condensation becomes subcooled liquid and comes out from another interface B, flows into device for drying and filtering 28, the refrigerant handled through dry filter
Assisted capillary 27 and main capillary 25 are flowed through in succession, refrigerant becomes low-temp low-pressure two-phase fluid after capillary resistance is depressured,
Enter heat exchange coil 3 from 3 one interface C of heat exchange coil along solid arrow direction, the evaporation endothermic in the heat exchange coil of " S " type；
Meanwhile the exhaust fan 4 at 1 top of heat source tower tower body runs at high speed, and pushes air to enter from the air inlet 7 of heat source tower tower body 1 simultaneously high
Speed blows over heat exchange coil 3, and heat exchange coil 3 absorbs heat from the air flowed through and is conducted to refrigerant, and refrigerant is absorbed into low-grade heat
Become low temperature and low pressure steam after amount, is flowed out from another interface D of heat exchange coil 3, enter four-way valve 22 along solid arrow direction, then
From the lower end of four-way valve 22 outlet enter gas-liquid separator 23, through gas-liquid separator 23 handle again from gas-liquid separator 23 export into
Enter 24 air inlet of compressor, starts next circulation.
The load side circulation port 30 of heat exchanger 29 connects indoor terminal, and the heat that heat exchanger 29 is obtained is to indoor heating.
When ambient air temperature is lower than 1 DEG C, 9 frosting of heat exchange coil 3 and fin, anti-freezing solution solution feed pump 12 starts, from antifreeze
Anti-freezing solution is extracted in solution pool 10, by filter 13 and feed flow check-valves 11, flows to main liquid supply pipe 8 and fin adjoining pipe feed flow
Pipe 2, then sprayed respectively from the hole of fin adjoining pipe 5 and coil pipe adjoining pipe 6, so that anti-freezing solution is soaked unrestrained heat exchange coil 3 and wing from top to bottom
The frost of the outer surface of heat exchange coil 3 and fin 9 is melted in the outer surface of piece 9, and the anti-freezing solution after defrosting is under gravity
Anti-freezing solution pond 10 is fallen into, is recycled repeatedly, until the frosting of 9 outer surface of heat exchange coil 3 and fin is all melted.
With the frost melted increase or misty rain intrusion, cause the moisture in anti-freezing solution to increase, anti-freezing solution it is dense
Degree reduces, and concentration meter 19 monitors in real time, and when detecting the concentration of anti-freezing solution reduces, starting infiltration film device 20, permeable membrane is set
Standby 20 extract anti-freezing solution and are pressurizeed from anti-freezing solution pond 10, through permeating UF membrane, by the purified water of no solute from no solute
It purifies water outlet 21 to be discharged except heat source tower tower body 1, the relatively high solute of concentration is recycled from high concentrations of solutes recovery port 18
Into anti-freezing solution pond 10.So constantly separation, until the concentration of anti-freezing solution reaches setting value, concentration meter 19 closes permeable membrane
Equipment 20.
When adjoining pipe hydrojet defrosting heat source tower heat pump device runs on cooling condition, refrigerant is compressed into high temperature by compressor 24
High pressure gas enters four-way valve 22 along hollow arrow direction, and another from four-way valve 22 exports out and another from heat exchange coil 3
One interface D inflow heat exchange coil 3, the heat release in the heat exchange coil of " S " type, meanwhile, the exhaust fan 4 at 1 top of heat source tower tower body
Air is sucked from air inlet 7 and blows over heat exchange coil 3 at a high speed, the heat of heat exchange coil 3 is brought into atmosphere, makes heat exchange coil 3
And refrigerant is cooled down, refrigerant after cooling comes out from 3 one interface C of heat exchange coil, passes in succession through main capillary 25, auxiliary hair
The processing of tubule 27 and check valve 26 makes refrigerant become low temperature and low pressure liquid by decompression throttling, then passes through device for drying and filtering 28
Filtration treatment is dried to refrigerant, then enters 29 evaporation endothermic of heat exchanger from another interface of heat exchanger 29 B, refrigerant becomes
It is come out after low temperature low pressure gas from 29 1 interface A of heat exchanger and enters four-way valve 22, then exported and enter from the lower end of four-way valve 22
Gas-liquid separator 23 enters the air inlet of compressor 24, into next circulation after the processing of gas-liquid separator 23.Heat exchanger 29
Load side circulation port 30 connect indoor terminal, indoor heat is exchanged by heat exchanger 29 to refrigerant, by refrigerant by heat band
It walks, reduces room temperature.
When ambient air temperature is especially high, anti-freezing solution solution feed pump 12 starts, and extracts anti-freezing solution from anti-freezing solution pond 10,
By filter 13 and feed flow check-valves 11, main liquid supply pipe 8 and fin adjoining pipe liquid supply pipe 2 are flowed to, then respectively from 5 He of fin adjoining pipe
The hole of coil pipe adjoining pipe 6 is overflowed, and so that anti-freezing solution is soaked the outer surface of unrestrained heat exchange coil 3 and fin 9 from top to bottom, is given heat exchange coil 3
Cool down with fin 9, anti-freezing solution falls under gravity into anti-freezing solution pond 10, recycles repeatedly, removes adjoining pipe hydrojet
White heat source tower heat pump device has air-cooled and water cooling dual function, and refrigeration effect greatly enhances.
Temperature is higher, the moisture evaporation in anti-freezing solution, the liquid level decline in anti-freezing solution pond 10, and fluid level controller 16 is opened
Water supply solenoid valve 15, external water source flow through water make-up check valve 14 and water supply solenoid valve 15 by water supply pipe, into anti-freezing solution pond
10, water make-up check valve 14 prevents anti-freezing solution from flowing backwards.
The device is run after a certain period of time, and dirt can be precipitated in anti-freezing solution pond 10, opens anti-freezing solution pond sewage draining exit 17
Dirt is discharged except heat source tower tower body 1.
Claims (4)
- The heat source tower heat pump device 1. adjoining pipe hydrojet defrosts, including heat source tower tower body (1), fin adjoining pipe liquid supply pipe (2), heat exchange coil (3), exhaust fan (4), several fin adjoining pipes (5) if, dry coil pipe adjoining pipe (6), main liquid supply pipe (8), several fins (9), anti-freeze-thaw Liquid pool (10), feed flow check-valves (11), anti-freezing solution solution feed pump (12), filter (13), concentration meter (19), infiltration film device (20), four-way valve (22), gas-liquid separator (23), compressor (24), capillary, device for drying and filtering (28), heat exchanger (29), It is characterized in that:Heat exchange coil (3), exhaust fan (4), anti-freezing solution pond (10), anti-freezing solution solution feed pump (12), filter (13), permeable membrane Equipment (20), gas-liquid separator (23), compressor (24), device for drying and filtering (28), heat exchanger (29) are separately mounted to heat source tower In tower body (1)；Heat source tower tower body (1) is equipped with air inlet (7)；Several fins (9) are stuck on heat exchange coil (3), and every layer of heat exchange coil (3) is equipped with a coil pipe adjoining pipe (6), often It is equipped with a fin adjoining pipe (5) at the top of block fin (9), and is equipped with several holes in fin adjoining pipe (5) and coil pipe adjoining pipe (6), institute There is fin adjoining pipe (5) to be connected with fin adjoining pipe liquid supply pipe (2), the coil pipe adjoining pipe (6) and fin adjoining pipe liquid supply pipe (2) and main confession Liquid pipe (8) is connected；Fluid level controller (16) and concentration meter (19) are installed in anti-freezing solution pond (10), anti-freezing solution pond (10) two sides are equipped with Delivery outlet, a delivery outlet are connected by filter (13) with anti-freezing solution solution feed pump (12), and anti-freezing solution solution feed pump (12) is logical It crosses feed flow check-valves (11) to be connected with main liquid supply pipe (8), another delivery outlet connection infiltration film device (20) input terminal, permeable membrane The high concentrations of solutes recovery port (18) of equipment (20) is connected to anti-freezing solution pond (10), and infiltration film device (20) is purified without solute Water outlet (21) directly externally discharge；Four-way valve (22) is exported with (3) interfaces of heat exchange coil, gas-liquid separator (23) entrance, compressor (24) respectively, is changed (29) interfaces of hot device are connected, and heat exchange coil (3) another interface is connected by capillary with device for drying and filtering (28), dry Filter (28) is connected with heat exchanger (29) another interface, gas-liquid separator (23) outlet and compressor (24) air inlet phase Even；Heat exchanger (29) load side is equipped with circulation port (30), and load side is equipped with circulation port (30) and connects indoor terminal.
- The heat source tower heat pump device 2. adjoining pipe hydrojet according to claim 1 defrosts, it is characterised in that: further include water supply pipe, Water make-up check valve (14), water supply solenoid valve (15), fluid level controller (16), water supply pipe are mounted on heat source tower tower body (1), liquid level Controller (16) is mounted in anti-freezing solution pond (10), and water supply pipe outlet is connected in anti-freezing solution pond (10), water supply pipe installation There are water make-up check valve (14) and water supply solenoid valve (15), fluid level controller (16) controls water supply solenoid valve (15).
- The heat source tower heat pump device 3. adjoining pipe hydrojet according to claim 1 or 2 defrosts, it is characterised in that: described is antifreeze Solution pool (10) bottom is equipped with sewage draining exit (17).
- The heat source tower heat pump device 4. adjoining pipe hydrojet according to claim 1 or 2 defrosts, it is characterised in that: the capillary Guan Youzhu capillary (25), check valve (26), assisted capillary (27) composition, check valve (26) are in parallel with assisted capillary (27) It connects, is connected between (3) interfaces of device for drying and filtering (28) and heat exchange coil with main capillary (25) afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811002442.4A CN109186147A (en) | 2018-08-30 | 2018-08-30 | Adjoining pipe hydrojet defrosting heat source tower heat pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811002442.4A CN109186147A (en) | 2018-08-30 | 2018-08-30 | Adjoining pipe hydrojet defrosting heat source tower heat pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109186147A true CN109186147A (en) | 2019-01-11 |
Family
ID=64917291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811002442.4A Withdrawn CN109186147A (en) | 2018-08-30 | 2018-08-30 | Adjoining pipe hydrojet defrosting heat source tower heat pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109186147A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981733A (en) * | 2019-05-21 | 2020-11-24 | 青岛海尔空调电子有限公司 | Heat source tower system |
| CN112747513A (en) * | 2019-10-30 | 2021-05-04 | 青岛海尔空调电子有限公司 | Heat source tower heat exchange system and defrosting control method thereof |
-
2018
- 2018-08-30 CN CN201811002442.4A patent/CN109186147A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981733A (en) * | 2019-05-21 | 2020-11-24 | 青岛海尔空调电子有限公司 | Heat source tower system |
| WO2020233112A1 (en) * | 2019-05-21 | 2020-11-26 | 青岛海尔空调电子有限公司 | Heat source tower system |
| CN112747513A (en) * | 2019-10-30 | 2021-05-04 | 青岛海尔空调电子有限公司 | Heat source tower heat exchange system and defrosting control method thereof |
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| 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 |
Application publication date: 20190111 |
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| WW01 | Invention patent application withdrawn after publication |