The content of the invention
In order to overcome the deficiencies in the prior art, the invention provides the hydrogen lung ventilator with constant current hydrogen manufacturing function.Specifically,
Its technical scheme is as follows:
A kind of hydrogen lung ventilator with constant current hydrogen manufacturing function, including the storage tank for water storage, the hydrogen for producing hydrogen
Gas generating means, the hydrogen formation apparatus includes being provided with cathode sheets, anode strip in tank house, the tank house and is arranged at institute
The permeable trapping film between cathode sheets and the anode strip is stated, the cathode sheets, the anode strip surround an electrolysis zone, described
Water trapping film is used to the electrolysis zone being separated into hydrogen-producing region and oxygen produces area, and the storage tank connects the oxygen and produces area,
The hydrogen-producing region is used to be enriched with hydrogen and discharge the hydrogen lung ventilator by output pipe;
Also include constant current power supply installation, for providing the constant electricity with preset value to the cathode sheets and the anode strip
Stream.
As the improvement to technical scheme, the constant current power supply installation includes constant-current transistor power supply, FET constant current
One or more in power supply and integrated transporting discharging constant-current supply.
It is used as the improvement to technical scheme, in addition to support, the storage tank, constant current power supply installation and hydrogen formation apparatus
It is mounted on the support.
As the improvement to technical scheme, the hydrogen-producing region connects hydrogen opening by counterbalance valve.
It is used as the improvement to technical scheme, in addition to circulating pump, the circulating pump connection storage tank and tank house.
As the improvement to technical scheme, in addition to for housing the shell of support, the shell, which is provided with, to be used to observe storage
The observation window of the water level of water tank.
As the improvement to technical scheme, the shell is provided with the cap bore for housing the tank lid for covering storage tank.
As the improvement to technical scheme, the support is additionally provided with ventilating fan.
As the improvement to technical scheme, the shell is provided with exhaust outlet.
As the improvement to technical scheme, in addition to hydrogen flowrate detection module, for the size according to the constant current
Calculate the reference value of the hydrogen flowrate;
Also include display, the numerical value for showing the hydrogen flowrate.
The present invention at least has the advantages that:
(1) the hydrogen lung ventilator for the constant current hydrogen manufacturing function that the present invention is provided, it is electric that the water that storage tank is provided enters tank house
Solution, the hydrogen-rich that cathode sheets are produced produces area, permeable trapping film resistance in hydrogen-producing region, the oxygen concentration that anode strip is produced in oxygen
The diffusion in area is produced to oxygen every hydrogen and obstructed diffusion of the oxygen to hydrogen-producing region, thus reached hydrogen and oxygen
Separation so that the hydrogen of preparation is purified, it is ensured that preferable purity;
(2) electric supply installation of the hydrogen lung ventilator for the constant current hydrogen manufacturing function that the present invention is provided includes constant current power supply installation, due to
Constant current power supply installation is constant to the electric current that cathode sheets and anode strip are provided, and it can make hydrogen formation apparatus at the uniform velocity hydrogen manufacturing,
Improve health care, therapeutic effect.Meanwhile, the hydrogen lung ventilator that the present invention is provided has hydrogen flowrate detection module and display, can
The reference value of hydrogen flowrate is calculated according to the size of constant current, and is shown to operator.With traditional detection of gas flow rate mode
Compare, it is not necessary to the element such as flowmeter, flow sensor, data acquisition device, greatly simplify detection structure, and reduce
Cost.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Embodiment
Hereinafter, various embodiments of the present invention will be described more fully.The present invention can have various embodiments, and
It can adjust and change wherein.It should be understood, however, that:It is limited to spy disclosed herein in the absence of by various embodiments of the present invention
Determine the intention of embodiment, but should invention is construed as covering falling into the spirit and scope of various embodiments of the present invention
All adjustment, equivalent and/or alternative.
Hereinafter, the term " comprising " that can be used in various embodiments of the present invention or " may include " indicate disclosed
Function, operation or the presence of element, and do not limit the increase of one or more functions, operation or element.In addition, such as existing
Used in various embodiments of the present invention, term " comprising ", " having " and its cognate are meant only to represent special characteristic, number
Word, step, operation, element, the combination of component or foregoing item, and be understood not to exclude first one or more other
Feature, numeral, step, operation, element, the presence of the combination of component or foregoing item or increase one or more features, numeral,
Step, operation, element, the possibility of the combination of component or foregoing item.
In various embodiments of the present invention, statement "or" or " in A or/and B at least one " include what is listed file names with
Any combinations of word or all combinations." A or B " or " in A or/and B at least one " may include A, may include for example, statement
B may include A and B both.
The statement (" first ", " second " etc.) used in various embodiments of the present invention can be modified to be implemented various
Various element in example, but corresponding element can not be limited.For example, presented above be not intended to limit the suitable of the element
Sequence and/or importance.The purpose presented above for being only used for differentiating an element and other elements.For example, the first user fills
Put and indicate different user device with second user device, although the two is all user's set.For example, not departing from each of the present invention
In the case of the scope for planting embodiment, the first element is referred to alternatively as the second element, similarly, and the second element is also referred to as first
Element.
It should be noted that:In the present invention, unless otherwise clear and definite regulation and definition, the art such as " installation ", " connection ", " fixation "
Language should be interpreted broadly, for example, it may be being fixedly connected, can also be detachably connected or be integrally connected;It can be machine
Tool is connected or electrically connected;Can be directly connected to, also can be by intermediary and be indirectly connected to;It can be two
The connection of element internal.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
In the present invention, one of ordinary skill in the art is it is to be appreciated that indicating position or position relationship in text
Term be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
The term used in various embodiments of the present invention is only used for describing the purpose of specific embodiment and not anticipated
In limitation various embodiments of the present invention.As used herein, singulative is intended to also include plural form, unless context is clear
Chu it is indicated otherwise.Unless otherwise defined, all terms (including the technical term and scientific terminology) tool being otherwise used herein
There is the implication identical implication being generally understood that with various embodiments of the present invention one skilled in the art.The term
(term such as limited in the dictionary typically used) is to be interpreted as having and the situational meaning in correlative technology field
Identical implication and it will be not construed as with Utopian implication or excessively formal implication, unless in the various of the present invention
It is clearly defined in embodiment.
Embodiment
Refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.(the following letter of hydrogen lung ventilator 100 of the constant current hydrogen manufacturing function of the embodiment of the present invention
Claim " hydrogen lung ventilator 100 "), including the storage tank 30 to water storage, the hydrogen formation apparatus 20 to produce hydrogen, hydrogen generation
Device 20 includes being provided with cathode sheets 22, anode strip 24 in tank house 21, tank house 21 and is arranged at cathode sheets 22 and anode strip 24
Between permeable trapping film 23, cathode sheets 22, anode strip 24 surround an electrolysis zone, and permeable trapping film 23 is electrolysis zone to be separated
Area is produced into hydrogen-producing region and oxygen, the connection oxygen of storage tank 30 produces area, hydrogen-producing region is to be enriched with hydrogen to discharge.
In above-described embodiment, the water that storage tank 30 is provided is electrolysed into tank house 21, the hydrogen that cathode sheets 22 are produced
Hydrogen-producing region is enriched in, the oxygen concentration that anode strip 24 is produced produces area in oxygen, and permeable trapping film 23 has obstructed hydrogen and produced to oxygen
Give birth to the diffusion in area and obstructed diffusion of the oxygen to hydrogen-producing region, thus reached the separation of hydrogen and oxygen so that prepare
Hydrogen be purified, it is ensured that preferable purity.
It should be noted that hydrogen-producing region and oxygen are sealed between producing area by permeable trapping film 23, realizing to permit
Xu Shuineng is flowed freely between hydrogen-producing region and oxygen produce area, the oxygen existed in the form of bubbles, hydrogen produced by electrolysis
It is blocked on the region each produced.Hydrogen-producing region is that the side wall of tank house 21 and tank house 21 is surrounded.Oxygen produces area
The opposite side wall of as tank house 21 and tank house 21 is surrounded.
Foregoing " hydrogen-producing region to be enriched with hydrogen to discharge ", it is to be understood that the mode of the discharge can be by electricity
The side wall positioned at hydrogen-producing region of solution room 21 sets out hydrogen pipe.Go out hydrogen pipe in addition to the hydrogen of generation is discharged, water vapour also can
It is blended in hydrogen.In order to avoid the water in tank house 21 by go out hydrogen pipe outflow, can go out hydrogen pipe set water proof valve (or resistance
Water valve), i.e., the hydrogen of effusion in hydrogen-producing region can only be allowed to prevent water from passing through by water proof valve.Water proof valve can use existing
Form, the ventilating water proof valve as described in Chinese patent CN102602584A, the ventilating water proof valve include be fixed on packing container
Outer wall on bonnet and sealing gasket is provided between bonnet and outer wall, bonnet is provided with the first stomata, and sealing gasket is provided with
With the first stomata to the second stomata connected, the second stomata is connected by the 3rd stomata on outer wall with the inner chamber of packing container,
Ventilated membrane is provided between first stomata and the second stomata.Ventilated membrane is included Base Material layer and is made of waterproof and breathable membrane material
Ventilative film layer.Ventilative film layer is rubberised layer.Ventilative film layer arranges that Base Material layer leans on the first stomata one by the second stomata side
Side is arranged.Ventilated membrane is adhesive into one with bonnet.The main body of bonnet is cylindric, is used in combination close to the side of casing provided with protrusion
In installing fixed mounting post, sealing gasket, ventilated membrane are sheathed in mounting post.
What deserves to be explained is, in the embodiment for being not provided with similar water proof valve, can be set in tank house 21 one every
Exhausted portion, the internal cavity of tank house 21 is separated into appearance water portion and goes out hydrogen portion, holds the lower section that water portion is located at hydrogen portion.Tank house 21
Water inlet 27 and delivery port 28 directly connect appearance water portion, hydrogen outlet pipe directly connects out hydrogen portion, so ensures that electricity
Water level in solution room 21 is not above out hydrogen portion, so as to prevent that water and hydrogen are discharged in the lump in tank house 21.
For the pressurized with hydrogen produced to hydrogen-producing region, it can be connected in hydrogen-producing region by counterbalance valve (not shown)
Hydrogen opening 84.It is 0.2MPa that regulation pressure, which may be selected, in counterbalance valve.The noun of counterbalance valve derives from Back Pressure Valve.
Its representative, which is meant, forms certain pressure due to the function of valve, and pressure can typically be adjusted.Fluid enters from counterbalance valve
Mouth enters, and is stopped by diaphragm, and then fluid is produced to diaphragm and upwarded pressure.When pressure is sufficiently large, spring is compressed, fluid
Jack-up diaphragm formation passage, from the outflow of back pressure valve outlet;If Fluid pressure not enough, will form and build the pressure, inlet pressure is increased
Until reaching rated pressure, jack-up diaphragm formation path.The rated pressure of counterbalance valve can adjust, typically by adjusting spring upper end
Push rod, so as to adjust the length of spring to realize.
The structure of above-mentioned tank house 21 can house cathode sheets 22, anode strip 24 and permeable trapping film 23 using all
And the form of all seal structures of water can be accommodated.Tank house 21 can be cylinder, using metal material, more suitably
Ground is stainless steel.Tank house 21 can be provided with water inlet 27 and delivery port 28, and the water inlet 27 is directly communicated to oxygen and produces area simultaneously
And the water of storage tank 30 is passed through in tank house 21, delivery port 28 is directly communicated to oxygen and produces area and to by tank house 21
Interior current return storage tank 30, during the current in tank house 21 return storage tank 30, oxygen generation area can be enriched with into production
Raw oxygen, which is discharged to, to be passed through in storage tank 30.
Tank house 21 can be vertically arranged, herein, be vertically arranged and referred to cathode sheets 22, anode strip 24 and permeable trapping film 23
Three is vertically arranged.Water inlet 27 can be located at the bottom of tank house 21, and outlet mouth is located at the top of tank house 21, so, by
The bottom of the water of storage tank 30 from tank house 21 enters oxygen and produces area, and flow back into storage tank 30 from the top of tank house 21,
So as to produce the current flowed to from the lower to the upper in tank house 21, so the Inner electrolysis of tank house 21 can preferably be produced
Heat taken away by the current, realize more preferable radiating to tank house 21.
Above-mentioned permeable trapping film 23 refers to the film with permeable trapping function.It should be noted that trapping herein refer to every
Exist from the gas existed in the form of bubbles, rather than with molecular state.The mechanism of hydrogen produced by electrolysis water is, the hydrogen in water
Ion obtains electronics in cathode sheets 22 and occurs reduction reaction and produce gas phase, because the interface between gas phase and aqueous phase is poor, institute
It is dispersed in water with the hydrogen of production with bubble hydrogen.Using the current density of negative electrode as 2~6mA/cm2, be electrolysed at ambient pressure and electricity
Xie Shui for exemplified by neutral, the size of produced bubble hydrogen is distributed in gaussian random~micrometer range in.Anode strip 24 is produced
Oxygen also in the form of bubble exist, by anodic current density be 2~6mA/cm2 and be electrolysed at ambient pressure exemplified by, produced
Raw bubble distribution is in~100 micrometer ranges.Therefore, the way of realization of permeable trapping film 23 can have retention size small
In bubble hydrogen and any type of film of oxygen bubbles size, i.e., with retention size (or being filter opening) below 10 microns.
Specifically, as one of which embodiment, permeable trapping film 23 can be retention size (or being filter opening)
Filter membrane below 10 microns.For example, microfiltration membranes.Microfiltration membranes refer to filter membrane of the filter opening footpath between 0.1~1 micron.Micro-filtration
Film can use inoranic membrane and organic high molecular layer.Inoranic membrane can be ceramic membrane and metal film.Organic high molecular layer can be
Natural macromolecule membrane and synthetic polymeric membrane, such as Kynoar (PVDF), polysulfones (PSF), polyacrylonitrile (PAN), polychlorostyrene
Ethene (PVC), polypropylene (PP) etc..Flat Membrane, tubular membrane, rolled film and hollow-fibre membrane are divided into according to the form of film again;Root
According to film principle, the preparation method of polymeric membrane is divided into leaching (dry-wet method), stretching hole forming method, phase inversion, thermic phase
Method, dip coating, irradiation method, surface chemical modification method, nuclear track method, power formation method etc., the preparation method of inoranic membrane mainly has
Sol-gel processing, sintering process, chemical precipitation method etc..Solvent understands, the microfiltration membranes with insulating properties are used herein,
Preferably organic polymer microfiltration membranes.Certainly, filter membrane can also use milipore filter etc..
As other embodiment, permeable trapping film 23 is from moistened membrane.It is that liquid water can be allowed to pass through from moistened membrane
And the film that other media can not pass through.Hydrophilic substance (such as titanium dioxide, silica, three oxidations two can be used from moistened membrane
The nafion films of aluminum particulate doping and modification).
Cathode sheets 22, permeable trapping film 23 and the three of anode strip 24 can not abut or side of the three to abut
Formula, such as cathode sheets 22, permeable trapping film 23 and anode strip 24 are sequentially overlapped setting.
Here, " superposition is set ", which may be appreciated, refers to that multiple objects (such as film) with Rotating fields use one
Fit in the stack manner on another one surface.So that A, B, C, D are sequentially overlapped setting as an example, refer to that an A surface sets B, B
Surface sets C, C surface to set D, i.e., according to a direction (such as from top to bottom), A, B, C, D are arranged in order.
Cathode sheets 22 and anode strip 24 can be with titanium sheet or in its surface gold,platinizeds.In order to strengthen cathode sheets 22 and anode strip 24
Activity, some oxides can be coated on surface, as described in Chinese patent CN1045678A layer coating include titanium oxide, iridium
Oxide and ru oxide etc..
Anode strip 24 and cathode sheets 22 can be set it is porous, for example can be set honeycomb, with ensure contacted with water it is abundant
Property.
Except this can also use removably, to facilitate to cathode sheets 22, permeable trapping film 23 and anode strip 24 more
Change.Dismountable mode, can be fastener, sliding part, shackle member.Herein, fastener can include flange part, spiro connecting piece
Deng.
, can be using circular lid and square cover etc. as the form of base and upper lid.
Cathode sheets 22, permeable trapping film 23 and anode strip 24 can be contained directly in tank house 21.Certainly it can also pass through
Set installed part to be superimposed three to set.Specifically, tank house 21 also includes to install anode strip 24 and be arranged at electrolysis
Anode outside area installs lid 26.Anode strip 24 can be arranged on the surface that anode installs lid 26.Mode as installation can lead to
Cross fastener.The main surface area that anode installs lid 26 can be more than anode strip 24.
Tank house 21 also includes installing lid 25 to install cathode sheets 22 and be arranged at the negative electrode outside electrolysis zone.Cathode sheets
22 can be arranged on the surface that negative electrode installs lid 25.Mode as installation can pass through fastener.Negative electrode installs the master of lid 25
Surface area can be more than cathode sheets 22.
Negative electrode installation lid 25 and anode installation lid 26, which lead to, can cover to house cathode sheets 22, permeable trapping film 23 and anode
Piece 24.Base and upper lid can be same as the mode covered, is no longer described in detail in this.
Negative electrode is installed can set pad between lid 25 and negative electrode.Anode is installed can set pad between lid 26 and anode
Piece.Negative electrode is installed can set pad between lid 25 and upper lid.The quantity of these pads can be one or more.Pad can be with
For round etc..
Above-mentioned storage tank 30 can cylinder casing, top is provided with to the case that adds water mouthful, and case mouthful is provided with covering case mouthful
Tank lid.The bottom of storage tank 30 is provided with outlet pipe, and outlet pipe connection oxygen produces area.The top of storage tank 30 is provided with backwater
Pipe, the delivery port 28 in return pipe connection oxygen separating area.
In order to realize the discharge to the air of storage tank 30 to avoid air from entering tank house 21 by water, three are can be set
Port valve, a bite connection oxygen of the triple valve produces the water inlet 27 in area, the outlet pipe of another mouthful of connection storage tank 30, triple valve
Another mouth be used to discharge storage tank 30 in air.
Water in storage tank 30 can with conditions of high water level automatically into in hydrogen formation apparatus 20.Certainly in water storage
Case 30 apart from hydrogen formation apparatus 20 farther out when, can be set circulating pump 60, the circulating pump 60 connection storage tank 30 and tank house 21,
It can so ensure that the water level in tank house 21 is not too low.
Support 70 can be set, to install storage tank 30, constant current power supply installation 40 and hydrogen formation apparatus 20.Support 70
Can be all known forms of this area, for example it can be made up of four perpendicular fine strains of millet, four supporting surfaces, and each supporting surface can
Surrounded with being all connected to perpendicular fine strain of millet by four two ends of connection.Four supporting surfaces be arranged in parallel from top to bottom.Branch positioned at the top
Support face is used to the top (will subsequently address) of support housing 80.The supporting surface of second top is to install storage tank 30, the 3rd
The supporting surface of top is used to hydrogen formation apparatus 20, and the supporting surface of bottom is to install constant current power supply installation 40.
Herein, constant current power supply installation 40 can be 24V power supplys, 12V power supplys or other types of power supply.Constant current power supply installation
40 can include circuit board and power supply etc..Power supply for hydrogen formation apparatus 20 to power.Circuit board realizes power supply and hydrogen hair
The electrical connection of generating apparatus 20, circuit board can be provided with the constant-current circuit that the input current of power supply is carried out to constant current to realize, and
The input voltage of power supply is carried out to the constant voltage circuit of constant pressure to realize.Constant-current circuit and constant voltage circuit are using known technology.
Above-mentioned circulating pump 60 can also be arranged on support 70.
For the ease of movement, castor 90 can be provided with support 70.Preferably, the castor 90 can use universal wheel.Preferably,
The universal wheel with brake function can also be used.
Refer to Fig. 5 and Fig. 6.Shell 80 also can be set in the outside of support 70.Shell 80 can be cylindrical plastic shell.Outside
Shell 80 can be provided with to the observation window 81 for the water level for observing storage tank 30, so can observe storage tank 30 with more convenient
Water level.
Shell 80 can also set the cap bore 82 for the tank lid for covering storage tank 30, so can be on shell 80 easily
Tank lid is exposed outside, so as to add water convenient for storage tank 30.
Support 70 is additionally provided with ventilating fan 50, in order to being radiated including hydrogen formation apparatus.The confession of ventilating fan 50
Electricity can be completed by constant current power supply installation 40.
Accordingly, exhaust outlet 83 can be provided with shell 80.The exhaust outlet 83 can be arranged close to the position of ventilating fan 50.
In the present embodiment, as shown in figure 1, hydrogen lung ventilator 100 also includes constant current power supply installation 40, for cathode sheets 22
The constant current with preset value is provided with anode strip 24.Specifically, constant current power supply installation 40 includes constant-current transistor power supply, field
One or more in effect pipe constant-current supply and integrated transporting discharging constant-current supply.
Due to the constant current that the electric current flowed through from cathode sheets 22 and anode strip 24 is preset value, cathode sheets 22 and anode
Water can be electrolysed by piece 24 with fixed speed, and such one end of cathode sheets 22 generates the constant airspeed of hydrogen, will not be by outer
The influence on boundary.So technical staff can determine most according to different hydrogen manufacturing speed to the health care of human body, the influence of therapeutic effect
Good hydrogen manufacturing speed, improves health care, therapeutic effect.
In the present embodiment, hydrogen lung ventilator 100 also includes hydrogen flowrate detection module 110, for according to the big of constant current
The small reference value for calculating hydrogen flowrate.Due to using electrolysis hydrogen manufacturing in the present embodiment, in the case where other factors of influence are constant,
The hydrogen flowing quantity that hydrogen lung ventilator 100 is exported and the size positive correlation of the constant current flowed through in cathode sheets 22 and anode strip 24.It is permanent
When the constant current that stream electric supply installation 40 is provided is bigger, hydrogen flowrate is bigger, and the constant current that constant current power supply installation 40 is provided is smaller
When, hydrogen flowrate is smaller.Therefore, using statistical method, set up by the experiment of limited number of time between constant current and hydrogen flowrate
Governing equation.Finally, in actual use hydrogen lung ventilator 100, the size according only to constant current can just calculate hydrogen stream
The reference value of amount.Not only the degree of accuracy is high for the hydrogen flowrate detection mode that the present embodiment is provided, also, it is not necessary to which flowmeter, flow are passed
The elements such as sensor, data acquisition device, greatly simplify detection structure, and reduce cost.
It should be strongly noted that the reference value due to calculating hydrogen flowrate in the present embodiment according to the size of constant current,
Hydrogen lung ventilator 100 should also include current measuring device, because detection electric current is no longer to enter one in conventional detection, the present embodiment
Step narration.
It should be strongly noted that the reference value due to calculating hydrogen flowrate in the present embodiment according to the size of constant current,
Hydrogen lung ventilator 100 should also include for constant current data acquisition and procession device, it include data collecting card, mainboard,
The devices such as CPU.Data collecting card is used for the analog signal that current measurement device is exported, and data are entered into row format is converted to numeral
Signal, CPU is used to the size of constant current being converted into hydrogen flowrate, is shown for display 85.
Hydrogen lung ventilator 100 also includes display 85, the numerical value for showing hydrogen flowrate.As a kind of preferred display,
Display in the present embodiment is LCD liquid crystal displays.Further, TFT screens, such as IPS are selected in LCD liquid crystal displays
LCD screen.TFT (Thin Film Transistor) refers to thin film transistor (TFT), i.e., each liquid crystal pixel point is by being integrated in picture
Thin film transistor (TFT) behind vegetarian refreshments drives, so as to accomplish high speed, high brightness, high-contrast display screen information.TFT
Each pixel of screen is controlled by being integrated in the TFT with, is active pixel point.Therefore, not only speed can pole
Improve greatly, and contrast and brightness are also substantially increased, while resolution ratio has also reached high level.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
The invention described above sequence number is for illustration only, and the quality of implement scene is not represented.
Disclosed above is only several specific implementation scenes of the present invention, and still, the present invention is not limited to this, Ren Heben
What the technical staff in field can think change should all fall into protection scope of the present invention.