[go: up one dir, main page]

CN107327956A - A kind of automated air purification system - Google Patents

A kind of automated air purification system Download PDF

Info

Publication number
CN107327956A
CN107327956A CN201710540680.XA CN201710540680A CN107327956A CN 107327956 A CN107327956 A CN 107327956A CN 201710540680 A CN201710540680 A CN 201710540680A CN 107327956 A CN107327956 A CN 107327956A
Authority
CN
China
Prior art keywords
air
layer
air cleaning
cleaning cavity
filter
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Withdrawn
Application number
CN201710540680.XA
Other languages
Chinese (zh)
Inventor
吴青明
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.)
Hefei Sibote Software Development Co Ltd
Original Assignee
Hefei Sibote Software Development Co Ltd
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.)
Filing date
Publication date
Application filed by Hefei Sibote Software Development Co Ltd filed Critical Hefei Sibote Software Development Co Ltd
Priority to CN201710540680.XA priority Critical patent/CN107327956A/en
Publication of CN107327956A publication Critical patent/CN107327956A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention discloses a kind of automated air purification system, including air cleaning cavity, the top of the air cleaning cavity is provided with gas outlet, and the side wall middle and lower part of air cleaning cavity is provided with air inlet;The air cleaning inside cavity middle and lower part is provided with the filter chamber that Open Side Down, gap is left between the outer wall of the filter chamber and the inwall of air cleaning cavity, the top of the filter chamber is provided with gas flow monitor layer, the side wall of the gas flow monitor layer and air cleaning cavity is tightly connected, and it is evenly distributed with multiple gas flow monitors on the gas flow monitor layer, the gas flow monitor is connected with control centre signal.The present invention is monitored in real time by control centre to room air, and sends command adapted thereto, and automaticity is high, is worthy of popularization.

Description

A kind of automated air purification system
Technical field
The present invention relates to technical field of air purification, more particularly, to a kind of automated air purification system.
Background technology
In recent years, China's air pollution is more serious, and people are particularly near to the attention rate of air pollution also more and more higher The continuous wide range of haze weather that phase occurs more promotes worry of the common people to air quality.The deterioration of air quality is Daily life is had a strong impact on, PM2.5 turns into the project that must be detected daily.Meanwhile, room air is flooded with particle The various pollutants, quilt such as thing, formaldehyde, total volatile organism (TVOC), bacterium, virus, anaphylactogen, gas with foreign flavor, radioactive source Being included in influences one of five maximum environmental factors on public health.Air pollution is common as the whole world to human health risk With the problem faced, in order to more efficiently purify air, the environmental clean life living environment of people one, air cleaning are gone back Technology has obtained the highest attention of people.
Air cleaning system of the prior art is purified the air of a room by way of setting screen pack or Electrostatic Absorption, quiet Electro Sorb mainly carries out air cleaning by adsorbing the pollution particle in air, it is impossible to sterilized, air purification effect is not It is good, and during overtension, it is also easy to produce ozone;Winter room air is dried, coordinate air-conditioning or heating in use, room air more Dry, unfavorable health;In addition, existing air purifier function is single, and automaticity is low, it is necessary to improve.
The content of the invention
The purpose of the present invention is that there is provided a kind of automated air purification system for problem of the prior art.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of automated air purification system, including air cleaning cavity, it is characterised in that the air cleaning cavity Top is provided with gas outlet, and the side wall middle and lower part of air cleaning cavity is provided with air inlet;
The air cleaning inside cavity middle and lower part is provided with the filter chamber that Open Side Down, the outer wall and air of the filter chamber Gap is left between the inwall for purifying cavity, the top of the filter chamber is provided with gas flow monitor layer, the gas flow prison The side wall for surveying layer and air cleaning cavity is tightly connected, and is evenly distributed with multiple gas flows on the gas flow monitor layer Monitor, the gas flow monitor is connected with control centre signal;
The top of the gas flow monitor layer is provided with temperature control, the temperature control provided with temperature control dress Put and temperature inductor, the temperature control equipment, temperature inductor are connected with control centre signal;
The gas outlet is provided with humidification device and indoor air humidity inductor, the spy of the indoor air humidity inductor Head is located at interior, and the indoor air humidity inductor is connected with control centre signal.
Further, activated carbon filter layer, the activated carbon mistake are provided between filter chamber and the gas flow monitor layer The side wall of filtering layer and air cleaning cavity is tightly connected.
Further, the spray direction of the humidification device is the outside of the air cleaning cavity.
Further, the side wall of the filter chamber and top are an entirety, and the filter chamber includes pre-filter layer and height Filter layer is imitated, the filter core of the high efficiency filter layer is efficient HEPA filter paper, and the efficient HEPA filter paper is corrugated, the ripple The broken line of line is parallel with the mounting surface of the high efficiency filter layer.
Further, the section of the ripple is in isosceles triangle, and the model of the drift angle of the isosceles triangular structure Enclose for 12 ° -15 °, a height of 2-4mm.
Further, it is described ultraviolet provided with ultraviolet sterilization layer between temperature control and gas the flow monitoring layer Line stenlizing layer is provided with ultra violet radiation lamp.
Further, the filter chamber is fastened on the bottom of air cleaning cavity, and the bottom of the air cleaning cavity is set There is the neck for engaging.
Further, the air cleaning cavity is provided with filter element replacing alarm, the filter element replacing alarm and control Center signal connection processed.
Further, the outside of the air cleaning cavity is provided with air quality inductor, the air quality inductor Probe be located at room air in.
The present invention compared with prior art, with following beneficial effect:
Air inlet is arranged at the lower half of air cleaning cavity by the present invention, and gas outlet is arranged at into air cleaning cavity Top, is carried out after filtration, purification, the quality of air lightens, and flows downward to the air entered by air inlet, and dust etc. pollutes Particle sinks to the bottom of air cleaning cavity.Air purification effect is optimized, the filter core design of high efficiency filter layer is corrugated, The contact area of non-purified air and filter core can be improved, air purification effect is further improved.
After air filtration layer is purified to air, purified air stream amount is carried out by gas flow monitor layer real When monitor, and by air mass flow feedback of the information to control centre, control centre judges whether to send out to filter element replacing alarm accordingly Send alarm command.When filter element replacing alarm receives alarm command, send actuation of an alarm and remind user to change filter core.
The present invention sets ultraviolet to irradiate layer between gas flow monitor layer and temperature control, to air cleaning cavity Interior gas carries out ultraviolet sterilization, and the top of ultraviolet irradiation layer can prevent ultraviolet from penetrating provided with devices such as temperature controls Go out and human body is damaged.
The setting of temperature control, makes air cleaning system after purification air, makes the air into temperature control For pure air, infringement of the non-pure air to temperature control equipment can be reduced, extend the service life of temperature control equipment. Gas outlet sets humidification layer and humidity sensor, and the data that control centre senses according to humidity sensor judge whether to open humidification Device, so that room air is maintained in suitable scope.The spray direction of humidification device is the outside of air cleaning cavity, It can avoid causing moist in cavity, in turn result in mouldy wait and adversely affect.
As can be seen here, the present invention is also equipped with sterilization, temperature adjustment and humidity and adjusted while being purified to room air A variety of functions such as section, gas flow monitor, temperature inductor, humidity sensor and air quality sense are controlled by control centre Device is answered, room air is monitored in real time, and sends command adapted thereto, automaticity is high, is worthy of popularization.
Brief description of the drawings
Fig. 1 is the stereogram of the present invention;
Fig. 2 is the sectional view of the present invention;
Fig. 3 is the structure chart of high efficiency filter layer filter core.
Wherein, 1- air cleanings cavity;11- air inlets;12- gas outlets;2- air wettings layer;3- ultraviolets irradiate layer; 4- temperature controls;5- gas flow monitor layers;6- activated carbon filter layers;7- filter chambers;71- filter cores;8- necks.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of automated air purification system, including air cleaning cavity 1, it is characterised in that the air cleaning cavity 1 Top be provided with gas outlet 12, the side wall middle and lower part of air cleaning cavity 1 is provided with air inlet 11;
The inside middle and lower part of air cleaning cavity 1 provided with the filter chamber 7 that Open Side Down, the outer wall of the filter chamber 7 with Gap is left between the inwall of air cleaning cavity 1, the top of the filter chamber 7 is provided with gas flow monitor layer 5, the gas The side wall of flow monitoring layer 5 and air cleaning cavity 1 is tightly connected, and is evenly distributed with the gas flow monitor layer 5 many Individual gas flow monitor, the gas flow monitor is connected with control centre signal;
The top of the gas flow monitor layer 5, which is provided with temperature control 4, the temperature control 4, is provided with temperature control Device and temperature inductor processed, the temperature control equipment, temperature inductor are connected with control centre signal;
The gas outlet 12 is provided with humidification device and indoor air humidity inductor, the indoor air humidity inductor Probe is located at interior, and the indoor air humidity inductor is connected with control centre signal.
Between the filter chamber 7 and gas flow monitor layer 5 be provided with activated carbon filter layer 6, the activated carbon filter layer 6 with The side wall of air cleaning cavity 1 is tightly connected.
The spray direction of the humidification device is the outside of the air cleaning cavity 1.
The side wall of the filter chamber 7 and top are an entirety, and the filter chamber 7 includes pre-filter layer and high efficiency filter Layer, the filter core 71 of the high efficiency filter layer is efficient HEPA filter paper, and the efficient HEPA filter paper is corrugated, the ripple Broken line is parallel with the mounting surface of the high efficiency filter layer.
The section of the ripple be in isosceles triangle, and the drift angle of the isosceles triangular structure scope for 12 °- 15 °, a height of 2-4mm.
Provided with ultraviolet sterilization layer between temperature control 4 and gas the flow monitoring layer 5, the ultraviolet sterilization layer Provided with ultra violet radiation lamp.
The filter chamber 7 is fastened on the bottom of air cleaning cavity 1, and the bottom of the air cleaning cavity 1, which is provided with, to be used for The neck 8 of engaging.
The air cleaning cavity 1 changes alarm provided with filter core 71, during the filter core 71 is changed alarm and controlled Heart signal is connected.
The outside of the air cleaning cavity 1 is provided with air quality inductor, the probe position of the air quality inductor In room air.
Embodiment 2
Applicant carries out air cleaning experiment using obtained air cleaning system, and experimental result is as shown in table 1 below:
Table 1
Air inlet 11 is arranged at the lower half of air cleaning cavity 1 by the present invention, and gas outlet 12 is arranged at into air cleaning The top of cavity 1, is carried out after filtration, purification, the quality of air lightens, and flows downward, and powder to the air entered by air inlet 11 The pollution particle such as dirt sinks to the bottom of air cleaning cavity 1.Air purification effect is optimized, the filter core 71 of high efficiency filter layer is set Meter is corrugated, can improve the contact area of non-purified air and filter core 71, further improve air purification effect.
After air filtration layer is purified to air, purified air stream amount is carried out by gas flow monitor layer 5 Monitoring, and by air mass flow feedback of the information to control centre in real time, control centre, which judges whether to change to filter core 71 accordingly, to alarm Device sends alarm command.When filter core 71, which changes alarm, receives alarm command, send actuation of an alarm and remind user to change Filter core 71.
The present invention sets ultraviolet to irradiate layer 3 between gas flow monitor layer 5 and temperature control 4, to air cleaning Gas in cavity 1 carries out ultraviolet sterilization, and the top of ultraviolet irradiation layer 3 is provided with the grade device of temperature control 4, can prevent purple Outside line is projected and human body is damaged.
The setting of temperature control 4, makes air cleaning system after purification air, makes the sky into temperature control 4 Gas is pure air, can reduce infringement of the non-pure air to temperature control equipment, extends the service life of temperature control equipment. Humidification layer and humidity sensor are set in gas outlet 12, and the data that control centre senses according to humidity sensor judge whether to open Humidification device, so that room air is maintained in suitable scope.The spray direction of humidification device is air cleaning cavity 1 Outside, can avoid causing moist in cavity, in turn result in mouldy wait and adversely affect.
As can be seen here, the present invention is also equipped with sterilization, temperature adjustment and humidity and adjusted while being purified to room air A variety of functions such as section, gas flow monitor, temperature inductor, humidity sensor and air quality sense are controlled by control centre Device is answered, room air is monitored in real time, and sends command adapted thereto, automaticity is high, is worthy of popularization.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (9)

1. a kind of automated air purification system, including air cleaning cavity, it is characterised in that the top of the air cleaning cavity Portion is provided with gas outlet, and the side wall middle and lower part of air cleaning cavity is provided with air inlet;
The air cleaning inside cavity middle and lower part is provided with the filter chamber that Open Side Down, the outer wall of the filter chamber and air cleaning Gap is left between the inwall of cavity, the top of the filter chamber is provided with gas flow monitor layer, the gas flow monitor layer It is tightly connected with the side wall of air cleaning cavity, and multiple gas flow monitorings is evenly distributed with the gas flow monitor layer Device, the gas flow monitor is connected with control centre signal;
The top of the gas flow monitor layer is provided with temperature control, in the temperature control provided with temperature control equipment and Temperature inductor, the temperature control equipment, temperature inductor are connected with control centre signal;
The gas outlet is provided with humidification device and indoor air humidity inductor, the probe position of the indoor air humidity inductor In interior, the indoor air humidity inductor is connected with control centre signal.
2. a kind of automated air purification system according to claim 1, it is characterised in that the filter chamber and gas stream Activated carbon filter layer is provided between amount monitor layer, the side wall of the activated carbon filter layer and air cleaning cavity is tightly connected.
3. a kind of automated air purification system according to claim 1, it is characterised in that the spraying of the humidification device Direction is the outside of the air cleaning cavity.
4. a kind of automated air purification system according to claim 1, it is characterised in that the side wall of the filter chamber and Top is an entirety, and the filter chamber includes pre-filter layer and high efficiency filter layer, and the filter core of the high efficiency filter layer is efficient HEPA filter paper, and the efficient HEPA filter paper is corrugated, the broken line of the ripple and the mounting surface of the high efficiency filter layer are put down OK.
5. a kind of automated air purification system according to claim 4, it is characterised in that the section of the ripple is in Isosceles triangle, and the scope of the drift angle of the isosceles triangular structure is 12 ° -15 °, a height of 2-4mm.
6. a kind of automated air purification system according to claim 1, it is characterised in that the temperature control is gentle Provided with ultraviolet sterilization layer between body flow monitoring layer, the ultraviolet sterilization layer is provided with ultra violet radiation lamp.
7. a kind of automated air purification system according to claim 1, it is characterised in that the filter chamber is fastened on sky Gas purifies the bottom of cavity, and the bottom of the air cleaning cavity is provided with the neck for engaging.
8. a kind of automated air purification system according to claim 1, it is characterised in that on the air cleaning cavity Provided with filter element replacing alarm, the filter element replacing alarm is connected with control centre signal.
9. a kind of automated air purification system according to claim 1, it is characterised in that the air cleaning cavity Outside is provided with air quality inductor, and the probe of the air quality inductor is located in room air.
CN201710540680.XA 2017-07-05 2017-07-05 A kind of automated air purification system Withdrawn CN107327956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710540680.XA CN107327956A (en) 2017-07-05 2017-07-05 A kind of automated air purification system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710540680.XA CN107327956A (en) 2017-07-05 2017-07-05 A kind of automated air purification system

Publications (1)

Publication Number Publication Date
CN107327956A true CN107327956A (en) 2017-11-07

Family

ID=60196665

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710540680.XA Withdrawn CN107327956A (en) 2017-07-05 2017-07-05 A kind of automated air purification system

Country Status (1)

Country Link
CN (1) CN107327956A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108414685A (en) * 2018-02-01 2018-08-17 青岛陶知电子科技有限公司 A kind of automobile indoor air quality-monitoring and active purification system and its apparatus
CN112583294A (en) * 2019-09-27 2021-03-30 韩国杰沃澳株式会社 Ion generator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2218326Y (en) * 1994-10-11 1996-01-24 东北大学 Dust-removing radon-removing air purifier
CN201263953Y (en) * 2008-08-15 2009-07-01 山东金泽尔工贸有限公司 Air purifier
CN102418960A (en) * 2011-10-25 2012-04-18 漳州万利达生活电器有限公司 Indoor environmental control equipment with functions of regulating temperatures, regulating humidity and purifying air
CN205717829U (en) * 2016-06-22 2016-11-23 常山卫邦风机有限公司 A kind of air purifier with filter check function
CN206018836U (en) * 2016-07-29 2017-03-15 深圳市森泊科技有限公司 A kind of Intelligent air purifier
CN106524320A (en) * 2016-11-11 2017-03-22 天津深呼吸环境科技发展有限公司 Low-noise air purifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2218326Y (en) * 1994-10-11 1996-01-24 东北大学 Dust-removing radon-removing air purifier
CN201263953Y (en) * 2008-08-15 2009-07-01 山东金泽尔工贸有限公司 Air purifier
CN102418960A (en) * 2011-10-25 2012-04-18 漳州万利达生活电器有限公司 Indoor environmental control equipment with functions of regulating temperatures, regulating humidity and purifying air
CN205717829U (en) * 2016-06-22 2016-11-23 常山卫邦风机有限公司 A kind of air purifier with filter check function
CN206018836U (en) * 2016-07-29 2017-03-15 深圳市森泊科技有限公司 A kind of Intelligent air purifier
CN106524320A (en) * 2016-11-11 2017-03-22 天津深呼吸环境科技发展有限公司 Low-noise air purifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108414685A (en) * 2018-02-01 2018-08-17 青岛陶知电子科技有限公司 A kind of automobile indoor air quality-monitoring and active purification system and its apparatus
CN112583294A (en) * 2019-09-27 2021-03-30 韩国杰沃澳株式会社 Ion generator
CN112583294B (en) * 2019-09-27 2024-05-24 韩国杰沃澳株式会社 Ion Generator

Similar Documents

Publication Publication Date Title
CN204593637U (en) Indoor air disinfection purifier
US5616172A (en) Air treatment system
CN103982949B (en) Anti-PM2.5 dual-purpose fresh air air purifier with ozone removal device
CN201436035U (en) Air filter and sterilizer
CN101839534B (en) Wall-hanging multifunctional laminar flow sterilization machine
CN202700315U (en) Air purification device
CN202853000U (en) Air purifier
CN204593638U (en) indoor air purifier
CN206973738U (en) A kind of graphene negative ion air-cleaner
CN107975885A (en) A kind of medical ward air sterilizing and purifying device
CN204115103U (en) The air cleaning unit of haze can be eliminated
CN206222554U (en) A kind of Novel air purification device
CN107084443A (en) A kind of air purifier
CN107327956A (en) A kind of automated air purification system
CN202803044U (en) Air purifier
CN108131737A (en) A kind of air purifying sterilizer
CN205461587U (en) PM2. 5 air purification device
CN205434435U (en) From systemic circulation air purification device
CN207527727U (en) A kind of hospital's Portable air purifier
CN103453584A (en) Air purifying device
CN102552962A (en) Combined air purification equipment
CN207471700U (en) Enter the wind the rotary indoor air cleaner of controllable-rate
CN204962959U (en) Air cleaning device
CN205641455U (en) Air -purification sterilizer
CN211316410U (en) Photocatalyst indoor air purification administers unmanned aerial vehicle

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: 20171107