CN112074722A - Particle trap and rotorcraft provided with same - Google Patents
Particle trap and rotorcraft provided with same Download PDFInfo
- Publication number
- CN112074722A CN112074722A CN201880084239.8A CN201880084239A CN112074722A CN 112074722 A CN112074722 A CN 112074722A CN 201880084239 A CN201880084239 A CN 201880084239A CN 112074722 A CN112074722 A CN 112074722A
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- Prior art keywords
- unit
- trap
- particle
- propeller
- particle trap
- 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.)
- Pending
Links
- 239000002245 particle Substances 0.000 title claims abstract description 82
- 238000007664 blowing Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 239000000443 aerosol Substances 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/003—Ventilation in combination with air cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/16—Blades
- B64C11/20—Constructional features
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a particle capture technology capable of maintaining air blowing efficiency. The particle trap of the present invention comprises: an air flow generating unit generating an air flow; and a capturing unit that captures a predetermined particle. The catching unit is disposed on at least a surface of the airflow generating unit. The particle trap is configured such that the trapping unit traps at least particles contained in the air flow when the air flow generating unit is periodically moved. With this configuration, problems occurring in an air cleaner using a filter or the like can be prevented. In addition, according to the rotorcraft in which the particle trap of the present invention is applied to the propeller, it is possible to trap particles in the air in flight.
Description
Technical Field
The present invention relates to a particle trap and a rotorcraft including the same.
Background
Conventionally, various air cleaners using a fan and a filter have been known. The principle is as follows: a fan is used to force air into and through the filter, thereby causing the filter to capture particulate matter, aerosol particles, etc. in the air to purify the air. Generally, a widely used air cleaner is of a type in which a fan and a filter are completely separated, and wind is blown to the filter by the fan (for example, refer to patent document 1).
As another method, there has been proposed an air cleaner and a humidifier in which a filter is bent in a wave shape and rotated, thereby allowing the filter to function as both a blade of an impeller and the filter (see, for example, patent document 2).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2009 and 202051
Patent document 2: japanese patent laid-open No. 2001-120933
Disclosure of Invention
Problems to be solved by the invention
One of the air purifiers is to filter an air flow generated by an air supply unit by a filter, thereby removing particulate matters and aerosol particles in the air. Therefore, the air blowing unit generates a large load, and the air blowing efficiency is reduced as the filter captures particles.
Accordingly, an object of the present invention is to provide a particle trap technique capable of maintaining the air blowing efficiency.
Means for solving the problems
According to the present invention, there is provided a particle trap including:
an air flow generating unit generating an air flow; and
a trapping unit that traps a predetermined particle,
wherein the catching unit is disposed on at least a surface of the airflow generating unit,
the particle trap is configured to cause the trapping unit to trap at least particles included in the airflow when the airflow generating unit is periodically moved.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a particle trap technique capable of maintaining the air blowing efficiency can be provided.
Drawings
Fig. 1 is a schematic diagram schematically showing functions of a trap unit used in a particle trap according to an embodiment of the present invention.
Fig. 2 is a schematic diagram showing another example of the capturing unit in fig. 1.
Fig. 3 is a view showing a propeller (rotor) provided with the capturing unit of fig. 1.
Fig. 4(a) is a view showing a section a-a' of the propeller of fig. 3. Fig. 4(b) is a cross-sectional view showing a modification of the propeller of fig. 3.
Fig. 5 is a view showing a general propeller to which the sheet-like trap unit of the present embodiment is attached.
Fig. 6 is a video image of an air purification system using a rotorcraft including the propeller of fig. 3.
Fig. 7 is a schematic diagram showing a state in which a detection unit is mounted on the capturing unit of fig. 1.
Fig. 8 is a diagram showing functional blocks of the rotorcraft of fig. 6.
Fig. 9 is a diagram showing a particle trap further including a detection unit for detecting (analyzing) information on the particle captured by the capture unit of fig. 1.
Fig. 10 is a photograph showing the propeller and the trap unit used in the aerosol trap experiment of the present example.
FIG. 11 is an electron micrograph of the capture cell of FIG. 10.
Detailed Description
The contents of the embodiments of the present invention are listed for explanation. The particle trap according to the embodiment of the present invention and the rotorcraft including the same have the following configurations.
[ item 1] A particle trap comprising:
an air flow generating unit generating an air flow; and
a trapping unit that traps a predetermined particle,
wherein the catching unit is disposed on at least a surface of the airflow generating unit,
the particle trap is configured to cause the trapping unit to trap at least particles included in the airflow when the airflow generating unit is periodically moved.
[ item 2]
The particle trap of item 1, wherein,
the trapping unit is configured to selectively trap a predetermined particle.
[ item 3]
The particle trap of item 1 or 2, wherein,
the air flow generating unit is a propeller,
the catching unit is disposed on a surface of the propeller.
[ item 4]
The particle trap of item 3, wherein,
the capturing unit is a capturing structure on the surface of the propeller.
[ item 5]
A rotorcraft comprising the particle trap of item 4.
[ item 6]
The rotorcraft according to item 5, further comprising:
means for analyzing information related to the particles captured by the propeller.
[ item 7]
A trap unit formed in a sheet shape for trapping a predetermined particle, comprising:
an adhesion unit for adhering at least to the airflow generation unit.
< detailed description of the embodiments >
Hereinafter, a particle trap and a rotorcraft including the same according to embodiments of the present invention will be described with reference to the drawings.
< summary >
The particle trap according to the embodiment of the present invention has a structure for trapping specific particles present in the air. Details of the structure will be described later. In addition, a rotorcraft uses a particle trap to its rotor to cause the rotor to trap certain particles present in the air.
The aforementioned gyroplanes may be referred to as Unmanned planes (drones), multiaxial helicopters (Multi Co pters), Unmanned Aerial Vehicles (UAVs), rpas (remote pilot Aircraft systems), uas (Unmanned Aircraft systems), and the like.
Further, the particle trap of the present invention is processed into a propeller shape and used for the above-described rotorcraft, but may be used for any device as long as the particle trap is in a propeller shape. Further, as long as the air flow can be generated, it can be applied to any member.
< particle trap >
Fig. 1 is a schematic diagram showing a cross-sectional structure of a particle trap according to the present embodiment. As shown in the figure, the particle trap is provided with a trap unit and a gas flow generation unit.
The airflow-generating unit is a substrate that is mounted to a propeller of the rotorcraft. The base material is mainly formed of resin or the like, but may be formed of other materials. The base material may be a single material or a plywood-like material formed by combining a plurality of base materials.
As can be seen from a comparison of fig. 1(a) and (b), the trapping unit is present on the surface of the gas flow generating unit and has a predetermined physical structure or chemical structure, thereby trapping the particles on the surface.
Further, the arrows in the drawing indicate the direction of the airflow generated by the airflow generation unit. I.e. showing the flow of the air flow generated by the rotation of the propeller. In the present embodiment, when the propeller rotates, an airflow is generated in a downward direction in the drawing (in other words, an upward thrust is generated in the rotorcraft having the propeller).
The gas flow generating unit and the capturing unit may be the same material or different materials. In this case, the airflow generation unit is used as a base material and the capture unit is coated on the surface thereof.
The trapping unit may have a structure (for example, provided with predetermined irregularities) in which the physical structure or chemical structure of the surface is suitable for trapping the specific particle, or may have a structure in which the surface is suitable for electrostatically attracting the specific particle.
Fig. 2(a) is a diagram showing another example of the particle trap. The illustrated particle trap includes a trap unit that selectively traps only a particle a from a plurality of different particles a and B.
Fig. 2(b) is a diagram schematically showing a surface structure in which only the particles a are selectively trapped. As shown in the figure, the trapping unit has a shape suitable for trapping the particle a, and has a shape unsuitable for trapping the particle B.
According to this configuration, when the airflow is generated by the rotation of the propeller, the particle a can be selectively captured only by the capturing means.
Fig. 3 is a diagram showing the propeller 10 as a particle trap. The propeller 10 includes: a shaft portion 11 which is a rotation shaft; and a blade section 12 that generates thrust (lift) by rotation. The propeller 10 (at least the blade portion 12 thereof) of the present embodiment is formed by the capturing unit 20.
Fig. 4 is a sectional view a-a' of fig. 3. As shown in the drawing, the propeller 10 has a catch unit 20 formed on a base material thereof.
Fig. 5 is a diagram showing the propeller 10' as a particle trap. Like the propeller 10 of fig. 3, the propeller 10' includes: a shaft portion 11 which is a rotation shaft; and a blade section 12 that generates thrust (lift) by rotation. The propeller 10 'of the present embodiment is attached with a capturing unit 20' formed in a sheet shape.
The trap unit 20' formed in a sheet shape includes: a catching material formed in a sheet shape; and an adhesive portion as a unit for adhering to the blade portion 12. The unit for adhering to the blade section 12 may utilize other units as well.
Fig. 6 is a schematic diagram showing a situation where the rotating propeller 10 captures particles. When the propeller 10 rotates, an airflow is generated in the downward direction W, and an upward thrust (acting as a lift) is generated on the propeller 10', whereby the rotorcraft (not shown) can ascend and be stationary (hovering) in the air.
Fig. 7 is a schematic view showing a case where the propeller 10 or 10' of fig. 3 or 5 is mounted to a rotorcraft and placed in the atmosphere. The gyroplane functions to capture particulate matter, aerosol particles, and the like in the atmosphere by hovering over the gyroplane.
As shown in the figure, a plurality of gyroplanes are arranged in the sky, and the positional relationship of the airframes is controlled by mutual communication. Further, the management may be performed by a management control system disposed on the ground or in combination with the management control system, as necessary.
The above-described gyroplane is mainly a gyroplane that moves in the air, but for example, the gyroplane may be a gyroplane having a function of combining applications such as land use and underwater use.
The rotorcraft described above has, for example, the functional blocks shown in fig. 8. In addition, the functional blocks of fig. 8 are a minimum reference structure.
The flight controller may have more than one processor, such as a programmable processor, e.g., a Central Processing Unit (CPU).
The flight controller has a memory, not shown, and can access the memory. The memory stores logic, code, and/or program instructions that the flight controller can execute to perform one or more steps.
The memory may include a detachable medium such as an SD card or a Random Access Memory (RAM), or an external storage device. Data obtained from cameras, sensors, etc. may be transferred directly to and stored in memory. For example, still image/moving image data taken by a camera or the like is recorded in an internal memory or an external memory.
The flight controller includes a control module configured to control a state of the rotorcraft. For example, the control module controls the propulsion mechanisms (motors, etc.) of the rotorcraft to adjust the rotor with six degrees of freedom (translational movements x, y and z, and rotational movement θ)x、θyAnd thetaz) Spatial arrangement, speed and/or acceleration of the rotorcraft. The control module can control one or more of the states of the mounting unit and the sensors.
The flight controller is capable of communicating with a transceiver unit configured to transmit and/or receive data from one or more external devices (e.g., a terminal, a display device, or other remote controller). The transceiver can use any appropriate communication method such as wired communication or wireless communication.
For example, the transmitting/receiving unit may use one or more of a Local Area Network (LAN), a Wide Area Network (WAN), an infrared ray, a wireless, a WiFi, a peer-to-peer (P2P) network, a telecommunication network, a cloud communication, and the like.
The transmitter/receiver unit can transmit and/or receive one or more of data obtained by sensors, processing results generated by the flight controller, predetermined control data, user commands from a terminal or a remote controller, and the like.
The sensor class of the present embodiment may include an inertial sensor (acceleration sensor, gyro sensor), a GPS sensor, a proximity sensor (e.g., radar), a visual/image sensor (e.g., camera), and other physical sensors according to its use. Further, chemical sensors such as ion sensors, bioaffinity sensors, gas sensors, other electrochemical sensors, optical sensors, and the like may also be included.
The gyroplane of the present invention is expected to be used as an industrial gyroplane for research, measurement, observation, and the like. The gyroplane according to the present invention is applicable to aircraft-related industries such as a multi-axis helicopter and an unmanned aerial vehicle, and further, the present invention is applicable to various industries such as a safety field, agriculture, and infrastructure monitoring, in addition to being used as an aerial gyroplane equipped with a camera and the like.
Fig. 9 is a diagram showing a particle trap further including a detection unit for detecting (analyzing) information on the particle a captured by the capture unit of the present invention. The detection unit detects the particles a captured (trapped) by the capture unit.
The detecting unit may be any specific material, reagent, or other detecting unit that reacts with the particles a. The detection unit does not necessarily have to be provided in the capturing unit, and may be a separate unit.
(examples)
Next, in order to verify the particle adsorption effect of the present invention, an aerosol trapping experiment was performed. The experimental procedure is summarized below.
As shown in fig. 10, hydrophobic Durapore F was adhered to propeller P with double-sided adhesive tape. The hydrophobic Durapore F used in this example was a membrane filter made of polyvinylidene fluoride.
The propeller P is connected to a motor and rotated, during which rotation it is exposed to aerosol standard particles. The aerosol standard particles are aqueous dispersions of polystyrene particles in the shape of a regular sphere. The particle size is 0.1 μm. + -. 0.003. mu.m.
As a result of microscopic observation after exposure, a small number of particles were confirmed together with the filter F, and a weight change of 0.3mg was confirmed by an electronic scale. As shown in fig. 11A, smaller particles of white color in the figure can be observed. Further, as shown in FIG. 11B, it was found that particles having a size of about 0.1 μm were adsorbed.
The above-described embodiments are merely illustrative for understanding the present invention and are not intended to limit and explain the present invention. The present invention may be modified and improved without departing from the gist thereof, and the present invention naturally includes equivalents thereof.
Description of the symbols
10. 10' propeller
11 shaft part
12 blade part
20. 20' Capture Unit
Claims (7)
1. A particle trap is provided with:
an air flow generating unit generating an air flow; and
a trapping unit that traps a predetermined particle,
wherein the catching unit is disposed on at least a surface of the airflow generating unit,
the particle trap is configured to cause the trapping unit to trap at least particles included in the airflow when the airflow generating unit is periodically moved.
2. The particle trap of claim 1,
the trapping unit is configured to selectively trap a predetermined particle.
3. The particle trap of claim 1 or 2,
the air flow generating unit is a propeller,
the catching unit is disposed on a surface of the propeller.
4. The particle trap of claim 3,
the capturing unit is a capturing structure on the surface of the propeller.
5. A rotorcraft comprising the particle trap of claim 4.
6. The rotary-wing aircraft according to claim 5, further comprising:
means for analyzing information related to the particles captured by the propeller.
7. A trap unit formed in a sheet shape for trapping a predetermined particle, comprising:
an adhesion unit for adhering at least to the airflow generation unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017255046 | 2017-12-28 | ||
| JP2017-255046 | 2017-12-28 | ||
| PCT/JP2018/047451 WO2019131583A1 (en) | 2017-12-28 | 2018-12-25 | Particle capturer and rotorcraft comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112074722A true CN112074722A (en) | 2020-12-11 |
Family
ID=67063693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880084239.8A Pending CN112074722A (en) | 2017-12-28 | 2018-12-25 | Particle trap and rotorcraft provided with same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7240676B2 (en) |
| CN (1) | CN112074722A (en) |
| WO (1) | WO2019131583A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040141848A1 (en) * | 2002-12-27 | 2004-07-22 | Darlene Beaven | Cover for ceiling fan blades and motor housing |
| US20080047429A1 (en) * | 2006-08-24 | 2008-02-28 | Microfluidic Systems, Inc. | Automated particle collection off of fan blades into a liquid buffer |
| CN103518067A (en) * | 2011-04-29 | 2014-01-15 | 戴克斯威特美国有限公司 | Fan filter device |
| US9399998B1 (en) * | 2013-11-12 | 2016-07-26 | Johnathan A. Hardie | Ceiling fan with air ionizing fan blades |
| CN106247443A (en) * | 2015-06-10 | 2016-12-21 | 丘冀昇 | There is contaminated air sterilization and the ceiling adhesion type complex function fan of purification portion |
| CN205872493U (en) * | 2016-07-26 | 2017-01-11 | 天津津宇凯创航空科技发展有限公司 | Unmanned vehicles sampled data control system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016084798A (en) * | 2014-10-24 | 2016-05-19 | 鏡子 青木 | Wind power generation energy-saving propeller |
| US10411899B2 (en) | 2016-04-25 | 2019-09-10 | Intertrust Technologies Corporation | Data management systems and methods |
-
2018
- 2018-12-25 CN CN201880084239.8A patent/CN112074722A/en active Pending
- 2018-12-25 WO PCT/JP2018/047451 patent/WO2019131583A1/en active Application Filing
- 2018-12-25 JP JP2019561690A patent/JP7240676B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040141848A1 (en) * | 2002-12-27 | 2004-07-22 | Darlene Beaven | Cover for ceiling fan blades and motor housing |
| US20080047429A1 (en) * | 2006-08-24 | 2008-02-28 | Microfluidic Systems, Inc. | Automated particle collection off of fan blades into a liquid buffer |
| CN103518067A (en) * | 2011-04-29 | 2014-01-15 | 戴克斯威特美国有限公司 | Fan filter device |
| US9399998B1 (en) * | 2013-11-12 | 2016-07-26 | Johnathan A. Hardie | Ceiling fan with air ionizing fan blades |
| CN106247443A (en) * | 2015-06-10 | 2016-12-21 | 丘冀昇 | There is contaminated air sterilization and the ceiling adhesion type complex function fan of purification portion |
| CN205872493U (en) * | 2016-07-26 | 2017-01-11 | 天津津宇凯创航空科技发展有限公司 | Unmanned vehicles sampled data control system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2019131583A1 (en) | 2021-10-21 |
| JP7240676B2 (en) | 2023-03-16 |
| WO2019131583A1 (en) | 2019-07-04 |
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Application publication date: 20201211 |
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