CN108592290A - A kind of protective device for being isolated - Google Patents
A kind of protective device for being isolated Download PDFInfo
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- CN108592290A CN108592290A CN201810544080.5A CN201810544080A CN108592290A CN 108592290 A CN108592290 A CN 108592290A CN 201810544080 A CN201810544080 A CN 201810544080A CN 108592290 A CN108592290 A CN 108592290A
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- exhaust air
- air
- air flue
- main body
- frame main
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- 230000001681 protective effect Effects 0.000 title claims abstract description 39
- 238000002955 isolation Methods 0.000 claims abstract description 41
- 208000015181 infectious disease Diseases 0.000 claims abstract description 17
- 238000004659 sterilization and disinfection Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
- 206010022000 influenza Diseases 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 26
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- 210000002345 respiratory system Anatomy 0.000 description 2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F9/00—Use of air currents for screening, e.g. air curtains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
- F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F9/00—Use of air currents for screening, e.g. air curtains
- F24F2009/007—Use of air currents for screening, e.g. air curtains using more than one jet or band in the air curtain
Abstract
The present invention provides a kind of protective devices for being isolated, it includes frame main body, clean unit, it is set to the inside of frame main body and makes its internal wind turbine for forming positive and negative pressure and be used to form the first exhaust air flue of isolation air curtain, the air inlet of wind turbine is for sucking extraneous air, clean unit is set to the inside of frame main body, and it is connected with the air inlet of wind turbine, the air outlet of wind turbine is connected with the first exhaust air flue, first exhaust air flue is set to the top of frame main body, and first exhaust air flue it is parallel with the long side of frame main body, it is equipped in first exhaust air flue at least a piece of for making isolation air curtain carry out inclined gib block to source of infection direction, and the angle of the normal direction of gib block and the first exhaust air flue is 15 °~25 °.The source of infection can be isolated with non-infected person for the protective device, and to ensure the health of non-infected person, and the structure of whole device is very simple, and isolation effect is effectively and reliable.
Description
Technical field
The present invention relates to medical facilities technical field more particularly to a kind of protective devices for being isolated.
Background technology
Communicable disease, the especially infection sources can cause disease to infect other people by the air of flowing is propagated
Infectious disease, such as：SARS, Mers, Ebola virus and influenza etc. have been increasingly becoming the weight for threatening human health
Want problem so that the mankind more pay attention to via propagated entrained by air or droplet medium potentially danger virus, for
It needs to carry out with patient for the people of close contact, there is very big menace, especially medical worker.Currently, in order to
It avoids patient and occurs, using air or droplet as the aleopation of the routes of infection, usually to adopt between the personnel of its close contact
Quarantine measures are taken, lesion isolation, ward isolation etc. are carried out to similar conditions patient, particularly, medical worker is in treating work
It then needs to take wearing protective clothes, wear the modes such as gloves mask and with patient be isolated and contact, although this mode also has
Certain isolation effect, but prodigious psychological pressure can be caused to patient, and the exchange between doctors and patients is also very inconvenient.And show
Some has the protective device of isolation features, it usually needs makes transformation to entire ward or hospital internal, cost is higher, whole
Body structure is complex, inconvenient for use, and isolation effect is bad；It, usually will blowing when being isolated by the way of blowing
Direction is set in the vertical direction, but as patient and other staff's face-to-face exchange, when paroxysmal cough occurs in patient
Or the behavior of sneezing is broken through since process has stronger impact force so being easy to cause and carrying virulent aerosol
Air curtain and be transferred to this side of other staff, and then damage to the safety of other staff, therefore the reliability of this kind of blowing design is non-
Often low, there is the risk that cannot be completely isolated in the aerosol of patient's exhalation, and to the life security of other staff, there are still very
Big threat.
Invention content
Based on above-mentioned the deficiencies in the prior art, the present invention provides a kind of protective device for being isolated, the protection
Device can in exchange, the aerosol that breathes out be isolated with other staff by the patient with infectious disease, with guarantee other people
The life security and health of member, and the structure of whole device is very simple, isolation effect is effectively and reliable.
Based on this, the present invention proposes a kind of protective device for being isolated comprising frame main body, purification are single
Member is set to the inside of the frame main body and makes its internal wind turbine for forming positive and negative pressure and be used to form the of isolation air curtain
One exhaust air flue, for the air inlet of the wind turbine for sucking extraneous air, the clean unit is set to the frame main body
Inside, and be connected with the air inlet of the wind turbine, the air outlet of the wind turbine is connected with first exhaust air flue, described
First exhaust air flue is set to the top of the frame main body, and the long side phase of first exhaust air flue and the frame main body
It is parallel, equipped at least a piece of for making isolation air curtain carry out inclined gib block to patient direction in first exhaust air flue,
And the gib block and the angle of the normal direction of first exhaust air flue are 15 °~25 °.
Optionally, each gib block is to be arranged parallel to, and the interval between each gib block is equal.
Optionally, the frame main body on the side at the both ends of first exhaust air flue is respectively equipped with air draught
Mouthful, the inlet scoop is connected with the air inlet of the wind turbine, and the clean unit is communicated in the inlet scoop and the wind
Between the import of machine.
Optionally, the clean unit includes being sequentially connected the primary efficient filter screen connect, disinfection unit and high efficiency filter
Device, the inlet scoop are connected with the primary efficient filter screen, and the high efficiency particulate air filter is connected with the air inlet of the wind turbine.
Further, the protective device for being isolated further includes bellows, and the bellows is set to described
The inside of frame main body, the air outlet of the wind turbine are connected with the entrance of the bellows, the outlet of the bellows and institute
The first exhaust air flue is stated to be connected.
Optionally, the bellows is Y funnel-shaped structures, and the entrance of the bellows is located at its side, the bellows
Outlet be located at its top, and the equal length of the length of the outlet of the bellows and first exhaust air flue.
Optionally, the air supply velocity of the wind turbine is 2m/s~4m/s.
Further, the top of the frame main body is equipped at least one the second exhaust air flues, second exhaust air flue
Width direction along the frame main body is arranged, and the first end of second exhaust air flue and first exhaust air flue
End is connected.
Optionally, close in the frame main body vertically to go out equipped at least one third on the side of the side of protection
Wind air duct, the end of the third exhaust air flue are connected with the second end of second exhaust air flue.
Optionally, the protective device for being isolated further includes control unit, and described control unit includes master control
Module, the detection module for detecting wind speed and the touch screen being set in the frame main body, the touch screen and the master
Module electrical connection is controlled, and the main control module is electrically connected with the detection module, the wind turbine, the clean unit respectively.
Implement the embodiment of the present invention, has the advantages that：
The protective device for being isolated of the present invention inside frame main body by that can form the wind of positive and negative pressure
The cooperating of machine and the first exhaust air flue need to blow out in patient and between the side of protection air curtain is isolated together, with respiratory tract
During the patient of disease and other staff carry out communication, it can reinforce playing the saliva of patient and/or aerosol
Isolation effect；And the air inlet and clean unit of wind turbine cooperate with each other, and can effectively suck the possibility of patient's exhalation
The saliva of the infections sources such as virus, the bacterium of carrying, and the purified treatment of disinfection is made by clean unit at once, it prevents from suffering from
The saliva of person and/or aerosol are distributed and are propagated in air, are avoided to needing the health of protection staff to threaten；It is filled by purification
It sets the cleaned air after completing disinfection and can be retransferred by wind turbine and blown out in the first exhaust air flue, then be isolation wind
The formation of curtain provides support, to complete recycling to the air in environment.What is be arranged in first exhaust air flue is used to make
Air curtain is isolated to the inclined gib block in patient direction, the normal direction of air curtain and the first exhaust air flue can be made to form 15 °~25 °
Angle, the gas that the air curtain thus blown out from the first exhaust air flue can effectively breathe out patient controls at it behind
In one zonule, the gas is made to be not easy to arrive in the respiratory region for needing protection staff, so as to reach best compacting dirt
The purpose of gas propagation is contaminated, preferable barrier patient interacts with the air-flow between protection staff is needed, and it is molten to reduce gas in actual environment
The risk of glue aleopation.
Further, it is arranged parallel to and is spaced the wind that equal gib block enables to formation at the first exhaust air flue
The uniformity of curtain is more preferable；Further include bellows in the protective device, the gas that wind turbine can be discharged is collected, and ensures one
Fixed wind pressure, in order to uniformly be blown out air by the first exhaust air flue, it is the positive pressure for being distribution to form one of intensity
Air curtain, it is effective to ensure air curtain to patient and the reliability for needing protection staff to be isolated；Bellows uses Y funnel-shaped structures,
It can be shunted from trend both sides when being thus discharged from clean unit when air, to improve blowout in the first exhaust air flue
Air uniformity, and Y funnel-shaped structures can reduce the resistance during air delivery so that air being capable of smoothly mistake
It crosses into the first exhaust air flue, ensures the smoothness of air flowing.The silencing means being arranged on bellows can reduce its
The noise generated in the course of work, preferable using effect can be reached；And the second outlet air is also distributed on the protective device
Air duct and third exhaust air flue, the two, which matches to surround with the first exhaust air flue, to be set to form an opposite envelope obstructed without physical unit
The space closed needs protection staff to be in the space, can obtain very reliable and effective protection；The work of entire protective device
Work is regulated and controled by control unit, and the degree of automation is higher, has flexible compliance in the actual use process.
Description of the drawings
Fig. 1 is the configuration schematic diagram of the protective device for being isolated described in the present embodiment；
Fig. 2 is the gas flow schematic diagram of the protective device for being isolated described in the present embodiment；
Fig. 3 is the overlooking structure diagram at the first exhaust air flue described in the present embodiment；
Fig. 4 is the schematic cross-sectional view that A-A goes out in Fig. 3；
Fig. 5 is the position view of each test point in the first exhaust air flue and the second exhaust air flue of the left and right sides；
Fig. 6 is the position view of each test point in the third exhaust air flue of the left and right sides；
Fig. 7 is the constitutional diagram under the conditions of control group case0；
Fig. 8 is the constitutional diagram under the conditions of Scenario 5Case 2；
Fig. 9 is the constitutional diagram under the conditions of Scenario 5Case 5；
Figure 10 is the constitutional diagram under the conditions of Scenario 5Case 8；
Figure 11 is the constitutional diagram under the conditions of Scenario 1Case1；
Figure 12 is the constitutional diagram under the conditions of Scenario 1Case 2；
Figure 13 is the constitutional diagram under the conditions of Scenario 1Case 3；
Figure 14 is the search gas average molecular fraction near medical worker's face under different air supply velocities and wind direction
(×10-4) line chart.
Reference sign：
1, frame main body, 11, inlet scoop, 12, exhaust outlet, 2, wind turbine, the 3, first exhaust air flue, 4, gib block, 5, air blast
Case, the 6, second exhaust air flue, 7, third exhaust air flue.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, the orientation or position of the instructions such as term "upper", "lower", "left", "right"
It is to be based on the orientation or positional relationship shown in the drawings to set relationship, is merely for convenience of description of the present invention and simplification of the description, rather than
Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as limitation of the present invention.
Referring to Fig. 1 to Fig. 4, the protective device for being isolated described in this preferred embodiment includes frame main body 1, net
Change unit, be set to the inside of the frame main body 1 and make its internal wind turbine 2 for forming positive and negative pressure and is used to form isolation wind
First exhaust air flue 3 of curtain, for the air inlet of the wind turbine 2 for sucking extraneous air, the clean unit is set to the machine
The inside of frame body 1, and be connected with the air inlet of the wind turbine 2, the air outlet of the wind turbine 2 and first exhaust air flue
3 are connected, and first exhaust air flue 3 is set to the top of the frame main body 1, and first exhaust air flue 3 with it is described
The long side of frame main body 1 is parallel, is equipped in first exhaust air flue 3 at least a piece of for making isolation air curtain to patient direction
Inclined gib block 4 is carried out, and the gib block 4 and the angle of the normal direction of first exhaust air flue 3 are 15 °~25 °,
In the present embodiment, the quantity of gib block 4 is preferably two.
Based on the above structure, using in the frame main body 1 close to the side of patient as front end, close to the side of medical worker
It is then rear end, the first exhaust air flue 3 is set to the top of frame main body 1 and parallel with the long side of frame main body 1, and first goes out
Wind air duct 3 is to be arranged close to the front end of frame main body 1, the gas that can be breathed out to patient in order to the isolation air curtain of its blowout
Colloidal sol is timely and effectively obstructed, and the isolation effect of the aerosol breathed out to patient is reinforced, and wind turbine 2 is used in frame main body 1
Inside forms positive and negative pressure, and the first exhaust air flue 3 is connected with the air outlet of wind turbine 2 to form positive pressure air curtain, and wind turbine 2 into
Air port is then connected with the clean unit being set in frame main body 1, when patient and medical worker's progress language communication exchange,
Saliva of gas and/or aerosol, ejection that the negative pressure that wind turbine 2 is formed inside frame main body 1 can breathe out patient etc. into
Row is reliable to be absorbed, and the gas, aerosol or saliva of sucking are passed through in purifier the sterilization processing that carries out disinfection in time,
It prevents from carrying virulent gas, aerosol or saliva and be propagated in air, avoid that medical worker is caused to infect；Through
The clean gas crossed after purifier disinfection is sent to by wind turbine 2 in the first exhaust air flue 3, in order to continual
Form isolation air curtain, thus, it is possible to improve the utilization rate of environmental air, using will carry virulent gas carry out barrier and
The two methods for absorbing sterilization, effectively avoid occurring aerosol aleopation phenomenon in doctors and patients' communication process, ensure medical matters
The safety of personnel.The gib block 4 being arranged in first exhaust air flue 3 enables to isolation air curtain to be partial to the direction of patient, and controls
It is 15 °~25 ° to make the isolation air curtain and the angle of the normal direction of the upper surface of frame main body 1, is preferably in the present embodiment
20 °, the gas control that the air curtain blown out out of first exhaust air flue 3 as a result, can effectively breathe out patient patient behind
A zonule in, make patient breathe out gas be not easy to arrive at the respiratory region of medical worker, so as to reach compacting virus
The purpose of propagation, the air-flow around medical worker are not called prisoners in after letting them out for exercise the directly affecting of curtain, therefore its Thermal plume being capable of normal development so that are suffered from
Air-flow interaction between person and medical worker can obtain preferable barrier, can also reduce the aerosol infection in actual environment
Risk.
Wherein, each gib block 4 is to be arranged parallel to, and can ensure that the air between each gib block 4 being capable of whole directions
The same direction blowout, it is ensured that the intensity for the air curtain that can be formed, and the interval between each gib block 4 is equal, ensures by wind
The clean air that machine 2 is blown out can be evenly distributed between each gib block 4, and outlet air is equal in the first exhaust air flue 3 of guarantee
Even property so that the working effect of its isolation air curtain formed is more preferable.Frame main body 1 positioned at the both ends of the first exhaust air flue 3
It is respectively equipped with inlet scoop 11 on side, i.e., is respectively arranged with inlet scoop 11, inlet scoop on the arranged on left and right sides face of frame main body 1
11 are connected with the air inlet of wind turbine 2, and clean unit is communicated between inlet scoop 11 and the import of wind turbine 2, and wind turbine 2 can be
The inside of frame main body 1 forms negative pressure, so external air continual can be inhaled into from inlet scoop 11, wherein wrapping
The virulent gas of band, aerosol or the saliva breathed out by patient is included, after being inhaled by inlet scoop 11 with virulent air
It enters directly into clean unit and is quickly and effectively purified, clean air can be regained after disinfection, these
Clean air is endlessly delivered at wind turbine 2, and is exported its positive pressure by wind turbine 2, to form isolation air curtain, to
Air recycling and constantly purifying in realization environment.Clean unit includes being sequentially connected the primary efficient filter screen connect, sterilizing and kill
Bacterium unit and high efficiency particulate air filter, inlet scoop 11 are connected with primary efficient filter screen, and high efficiency particulate air filter is connected with the air inlet of wind turbine 2
It is logical, the possibility of the patient's exhalation being inhaled by inlet scoop 11 carry virus and bacterium gas pass through successively primary efficient filter screen,
Be input to after disinfection unit and high efficiency particulate air in wind turbine 2, clean unit includes multiple dissipation link, can to air into
The purification of row high efficient and reliable, it is ensured that purify the quality of work.
In addition, the protective device for being used to be isolated further includes bellows 5, bellows 5 is set to the interior of frame main body 1
The air outlet in portion, wind turbine 2 is connected with the entrance of bellows 5, and the outlet of bellows 5 is connected with the first exhaust air flue 3, totally
Air exported in bellows 5 via wind turbine 2, kept by bellows 5 to inputting its internal air pressure, until
After air pressure in bellows 5 reaches certain value, controls gradually from being spilled over in bellows 5 in first exhaust air flue 3, pass through
The first uniformly blowout of exhaust air flue 3, to the first exhaust air flue 3, each second exhaust air flue 6 and the Ge in the bellows course of work
The outlet air situation of three exhaust air flues 7 is tested and is detected, referring to Fig. 5 and Fig. 6, respectively in the first exhaust air flue 3 and left and right
It is each in the position view of each test point and the third exhaust air flue 7 of the left and right sides in second exhaust air flue 6 of both sides
The position view of test point, the experimental data are shown in the following table 1 and shown in table 2 counts：
Table 1 is at 7 each test point of the first exhaust air flue 3, the second exhaust air flue of left side 6 and left side third exhaust air flue
Test data；
Table 1
Table 2 is at 7 each test point of the first exhaust air flue 3, the second exhaust air flue of right side 6 and right side third exhaust air flue
Test data；
Table 2
In general, before not installing bellows, wind speed in entire isolating device at each exhaust air flue it is very poor
Between 1.5m/s~2.0m/s, by observing above-mentioned test data it is found that each outlet air in isolating device after installation bellows
The very poor of wind speed at air duct obtains great reduction, i.e., the positive pressure wind of one of even intensity can be formed at each exhaust air flue
Curtain has good isolation effect.
It should be noted that in the present embodiment, bellows 5 is selected as Y funnel-shaped structures, the entrance of bellows 5
Positioned at its side, the outlet of bellows 5 is located at its top, and the length of the length of the outlet of bellows 5 and the first exhaust air flue 3
Equal, the air being blown into bellows 5 by wind turbine 2 can be shunted from trend both sides, to make clean air produce by boasting
Relatively uniformly, the design of Y funnel shapeds also effectively reduces the resistance of air so that air can be smoothly transitioned into
In first exhaust air flue 3, the smoothness of air circulation is thereby guaranteed that.Being designed as bellows 5 is effectively real using mechanical structure
The effect of the uniform outlet air of existing air curtain, therefore extra energy consumption is not will produce in the installation of bellows 5 and the course of work, improving air curtain
Blowing quality while, it is cost-effective to a certain extent.But in other embodiments, the planform of bellows 5 designs simultaneously
It is not limited by the present embodiment, when 5 shape type of suitable bellows can be selected according to actual needs.It is also set on bellows 5
There is silencing means, the noise that bellows 5 generates during the work time can be reduced, better experience is provided for user, to reach
To preferable using effect.
Referring to Fig. 1 and Fig. 2, the top of frame main body 1 is equipped at least one the second exhaust air flues 6,6 edge of the second exhaust air flue
The width direction of frame main body 1 is arranged, and the first end of the second exhaust air flue 6 is connected with the end of the first exhaust air flue 3,
The quantity of the second exhaust air flue 6 is preferably two in the present embodiment, and two the second exhaust air flues 6 are respectively communicated in the first outlet air wind
At the both ends in road 3, and the second exhaust air flue 6 is mutually perpendicular to arrange with the first exhaust air flue 3, in the top shape of frame main body 1
At U-shaped exhaust air flue, the air curtain that thus air curtain of the second exhaust air flue 6 blowout can be blown out with the first exhaust air flue 3 is mutually spelled
It connects to form the better protective zone of closure, to provide preferably protection to medical worker.Further, after frame main body 1
The both sides at end are respectively equipped with the third exhaust air flue 7 being arranged in a vertical direction, and the end of third exhaust air flue 7 and the second outlet air
The second end in air duct 6 is connected, and thus the first exhaust air flue 3, the second exhaust air flue 6 and third exhaust air flue 7 are blown out respectively
Positive pressure air curtain one higher space of closure can be provided for medical worker, the protection of high quality is provided for medical worker
Work, the presence of the second exhaust air flue 6 and third exhaust air flue 7 can also be reduced to a certain extent due to the first exhaust air flue
3 wind direction is excessive and is the risk that medical worker brings, and improves the reliability of entire protective device.The table of frame main body 1
It is respectively equipped with exhaust outlet 12 corresponding with the first exhaust air flue 3, the second exhaust air flue 6 and third exhaust air flue 7 on face, ensures
First exhaust air flue 3, the second exhaust air flue 6 and third exhaust air flue 7 blow out the smoothness of positive pressure air curtain.
Further, the protective device for being isolated further includes control unit, and control unit includes main control module, uses
In the touch screen that detection is entered the wind the detection module of wind speed and is set in frame main body 1, touch screen is electrically connected with main control module, and
Main control module is electrically connected with detection module, wind turbine 2, clean unit respectively, and main control module can receive detection module and feed back
Wind speed information, and can according to user by touch screen operation come realize the adjustment to wind turbine 2 and clean unit control,
Change the working condition of the size and clean unit of wind speed according to practical situation, such as：When patient sneezes suddenly, rush at
The saliva that the air-flow of medical worker can suddenly be accelerated, and can have patient breaks through the first exhaust air flue 3 and is formed by isolation air curtain,
User can control the wind speed that main control module improves wind turbine 2 by touch screen at this time, with the intensity of enhancing isolation air curtain, thus
The saliva blown against one's face can be blocked, the effective safety for ensureing medical worker, to the degree of automation of whole process
Height, it is easy to use.
It need to be partial to have best isolation effect when 20 ° of patient direction is arranged for air curtain to simulate by CFD
Engineering test carries out research and obtains conclusion, and the specific process of argumentation is as follows：
By CFD analogue techniques, the isolation effect using air-flow isolation protecting device is studied, and obtains different ginsengs
Several influences to isolation effect include mainly：The speed of air curtain air outlet, wind direction.And protection is filled in terms of the two
The optimization design set proposes recommendation on improvement.Under the condition setting of this simulation, protective device is located at room center, medical worker
Midpoint with patient's line is the central point in room.Relevant parameter in geometrical model, including protective device size, send air port back to
Size and position established according to the known parameters of actual product, and carried out rational simplification.It is main in view of air curtain
Effect is the pathogenic microbes aerosol of exhalation of isolating a patient, therefore same in practical situations to patient and doctor in this simulation
When the state that breathes made certain simplification, the case where primary study patient's expiration, doctor's air-breathing.
The foundation of CFD model and the setting of boundary condition first determine that geometrical model is as shown in table 3：
3 geometrical model size of table
Simulated conditions are set again, described in table 4：
4 simulated conditions of table are arranged
Wherein, it notes：Wind direction θ refers to the air supply direction and its method of the length direction air outlet of the upper surface of frame main body 1
The angle (°) (being biased to patient direction) in line direction.The gas componant for representing patient's exhalation in simulation process with search gas, is counted
The constitutional diagram of calculation refers to the molar fraction distribution map of search gas.
As a control group with Case 0, it is set as frame main body 1 and uses tracer referring to the constitutional diagram that Fig. 7 is Case0 without air curtain
Gas represents the gas componant of patient's exhalation, therefore the constitutional diagram refers to the molar fraction distribution map of search gas.Patient exhales
The air-flow gone out rolls up suction by the Thermal plume that oneself crown generates, and rises to the crown, while also being deviated to a side walls.Identical
Under room ventilation systems, the rate of ventilation of no air curtain is less than the rate of ventilation for having air curtain, therefore the rate of ventilation of Case 0 is smaller,
The pollutant residence time is longer.Because being obstructed without air curtain, the air-flow of patient may everywhere spiral in room, lead to doctor's face
Neighbouring trace gas concentration is higher (several times that can reach other Case), and the exposure duration of doctor is also longer.Therefore, if
The way that air curtain is set to reduce the infection risk of doctor is highly effective.
By in simulation process it can be seen that, influence of the wind direction to the isolation effect of protective device, with Scenario 5
For (Case 2,5,8), the influence that different wind directions breathed out and stained track to patient is studied, referring to Fig. 8, Fig. 9 and Figure 10
The constitutional diagram under the conditions of Case 2, Case 5 and Case 8 is corresponded to respectively, compares the molar fraction distribution of patient side in a figure
State is drawn the following conclusions：
1, on the basis of 2 Case, wind direction is adjusted to 20 °, is projected by the first exhaust air flue 3 of frame main body 1
Cold airflow effectively the exhaled gas of patient can be controlled in a patient zonule behind, it is not easy to arrive at doctor
Respiratory region, to achieve the purpose that suppress dispersion of pollutants.Air-flow around doctor is not directly affected by air curtain, Thermal plume
It can normal development.Such case can preferably obstruct the interaction of the air-flow between patient and doctor, can reduce in actual environment
Aerosol infection risk.
2, Case 8 tilts air curtain air supply direction to patient-side again, and wind direction is adjusted to 40 °, patient and doctor it
Between air-flow be freely connected to, the trace gas concentration of doctor's face breathing area is higher, and air curtain performs practically no function.This is because
The wind direction of air curtain is too low at this time, and air-supply air-flow is highly prone to the attraction of patient's exhaled air flow, or even by the higher disease of temperature
People's exhaled air flow is suppressed thereunder, and air-supply air-flow will be arrived at directly below patient face so that patient's exhaled air flow then can be with
It is directed across air-supply air-flow and past doctor region free movement.But at the same time, due to the second exhaust air flue 6 of frame main body 1
Effect again certain interference and compacting are played to the movement of patient's exhaled air flow so that patient's exhaled air flow finally deviates doctor
Raw direction movement and return to patient behind, the presence of second exhaust air flue 6 and third exhaust air flue 7 can be in frame main body 1
Reduce to a certain extent due to being brought to medical worker when selecting larger wind direction (such as 40 °) at the first exhaust air flue 3
Risk.
It can also be learnt by simulation process, influence of the air supply velocity to protective device isolation effect, with Scenario1
For (Case 1,2,3), the influence that different air supply velocities breathed out and stained track to patient is studied, referring to Figure 11, Figure 12 and figure
13 correspond to the constitutional diagram under the conditions of Case 1, Case2 and Case 3 respectively, compare the molar fraction distribution of patient side in a figure
State is drawn the following conclusions：
1, in the case of 1 Case, since the air supply velocity of air curtain is not high, the pollutant of patient's exhalation can be easy to
Air curtain is crossed, is moved from eminence (close to ceiling position) Xiang doctor side, the buffer action of air curtain is unable to get guarantee.This be by
In air curtain wind direction straight up, and speed is not high, and weaker air-supply air-flow is just breathed out by patient soon after ejection
The Involving velocity of air-flow so that the air-supply air-flow of air curtain is slightly biased to patient-side.And since the density of patient's exhaled gas is more than
Air, pollutant have an opportunity, and are possible to reach the respiratory region of doctor around 1 bottom of frame main body and side.Specifically
Infection risk it is also related with pollutant kind, exposure duration, the infection factors such as threshold value.Therefore in this case, although wind
Curtain has certain effect on the surface of nearly frame main body 1, but effect is limited, the air-supply wind speed of protective device should be increased, into one
Air-flow between step two people of barrier exchanges.
2, in Case 2, the air supply velocity of air curtain is increased to 3m/s.At this point, air-supply air-flow is formd than more complete wind
The pollutant of curtain, left side patient is blocked in the air curtain left side substantially, and only minority can escape on the right of air curtain.Exhaled air flow is biased to
Air-flow of blowing has stronger Involving velocity to patient's exhaled air flow and causes this is because the speed of air-supply air-flow is larger；It is another
Aspect, colder air-supply air-flow four dissipates in the room, or even top forms certain thermal stratification (in upper heat-in a room
It is upper it is cold-in lower heat), destroy Thermal plume.
3, in Case 3, the case where air supply velocity of air curtain is increased to 4m/s.At this point, strengthen air curtain can completely every
From two people, this is because the higher air-supply air-flow of colder and speed directly rushes at ceiling, to be built between doctor and patient
At one strong " air curtain barrier ".In this case, pollutant reaches the chance smaller of doctor respiratory region, generally to
It can be drained by the return air inlet of protective device both sides before up to doctor side.But it can be obtained from simulation process, patient's exhalation
The air supply velocity that gas is higher than air curtain in Case 2 instead in the mean concentration of doctor's overhead ceiling region is 3m/s's
Situation, and increase the risk polluted to doctor's breathing area.This is because the higher air-flow of speed is to patient's exhaled gas
Involving velocity is stronger, then the density of its mixed gas and the density difference of surrounding air are bigger, easier in the case where doctor side occurs
It is heavy.So air supply velocity is not the bigger the better.
In conclusion being search gas near medical worker's face under different wind directions and air supply velocity referring to Figure 14
The line chart of average molecular fraction, with reference to the process entirely simulated and combine the line chart it was concluded that：
1, the isolation effect of 20 ° of wind direction (Case 4,5,6) is better than 0 ° (Case 1,2,3) and 40 ° (Case7,8,9)
The case where.Because compared with 0 °, there are one 20 ° of air-supply air-flows towards the inclined acting surface in patient direction, the expiratory air to patient
Body has better suppression, and pollutant is blowed to the space of patient behind；And 40 ° of wind direction, since air-flow tilts too
It is more, close to patient's face height, and patient's face is directly taken to by exhaled air flow under the Involving velocity of patient's exhaled air flow
Lower section cannot play the role of stopping patient's exhaled air flow；
2, the isolation effect of air supply velocity 3m/s (Case 2,5,8) is better than 2m/s (Case Isosorbide-5-Nitraes, 7) and 4m/s (Case
3,6,9) the case where.The reason is that the air curtain insufficient strength that the air supply velocity of 2m/s is formed, the aerosol tool sprayed when patient speaks
There is certain speed, and the resistance for the air curtain that the wind speed of 3m/s is formed is more than the resistance of the air curtain of the wind speed formation of 2m/s, so
The air curtain that the air supply velocity of 2m/s is formed causes patient to exhale being easy to be worn out by patient's exhaled air flow close to the position of ceiling
Go out air-flow is leaked into doctor side；And the air supply velocity of 4m/s can enhance the disorderly degree of room interior air-flow, to aggravate
The mixing of room air causes the exhaled air flow of patient to be probably full of in entire room, and the air supply velocity of 4m/s
Patient may be caused because fair speed going out the blowing feeling for flowing and bringing, influence comfort level and the experience of patient and medical worker
Sense, and the wind turbine of wind speed for forming 4m/s will produce larger noise during the work time, and consume the excessive energy, using at
This is higher, and wind speed is preferably 3m/s appropriate in the present embodiment.
3, the Entraining Effect of air curtain jet stream and human body Thermal plume is embodied in simulations.Different air curtain air supply velocities
Under, patient's exhaled gas can be influenced by different Involving velocities.By taking Case 2 and Case3 as an example, when air curtain air supply velocity compared with
Hour, the Entraining Effect that human body Thermal plume generates plays a leading role to the movement of patient's exhaled gas, and exhaled gas is by the crown
Thermal plume is captured, and is floated by heating；When air curtain air supply velocity is larger, the Entraining Effect caused by air curtain jet stream plays master
Effect is led, patient's exhaled gas can be involved in air curtain and the air-supply air-flow of air curtain is followed to move together, while pollutant is also by wind
Curtain is surrounded and is controlled, so that the infection risk of doctor is minimized.
It should be noted that in the present embodiment, for the diagnostic table applied to hospital of the isolation protecting device,
From needing to medical worker and patient's isolation, air curtain is formed between medical worker and patient with can be molten into promoting the circulation of qi
The blocking of glue prevents from carrying the health that virulent aerosol threatens medical worker, to medical worker in maximum degree
It is protected.But in other embodiments, the application of the isolation protecting device is not limited by the present embodiment, when can be applied to
It is various to be easy to happen in the place of cross-infection, such as：It can be applied in bank counter, substitute traditional use glass to the people that works
The method that member and customer are isolated；It can also be applied to booking position in hospital, the conductor table at station and office's workbench etc.
At pick-up window under various public places, avoids business personnel and needs the mutual infection in the customer's communication process handled affairs,
Ensure the health and safety of internal work person and external customer；Can be applied to the inside of various vehicles, to isolation driver and back seat,
Personnel on counter-base, the especially vehicle interior in public uses such as ambulance, taxi and buses, are effectively blocked and are handing over
The propagation for flowing the aerosol generated in the process, can play the role of protection to driver and passenger；Laboratory is can be applied to, especially
It is to carry out isolation blocking, guarantee test personnel for issuable pernicious gas etc. during experiment in Bioexperiment room
Safety；The device can be not only mounted on the plane device of only table top or desktop etc., additionally it is possible to be arranged removable
In dynamic relevant framework, to form the device similar to screen, to convenient for users to frame to being provided with the isolating device
Frame is moved or/and is carried, and then can be applied at any time convenient for user, especially in public places in, have extremely reliable
Insulation blocking effect, and experience sense is preferable,
The protective device for being isolated of the present invention inside frame main body by that can form the wind of positive and negative pressure
The cooperating of machine and the first exhaust air flue blows out between patient and medical worker and air curtain is isolated together, with respiratory tract
During the patient of disease and medical worker carry out communication, reinforce to the saliva of patient and/or aerosol play every
From effect；And the air inlet and clean unit of wind turbine cooperate with each other, possibility that can be effectively by patient's exhalation carries disease
The saliva of the infections sources such as poison, bacterium is sucked, and makes the purified treatment of disinfection at once by clean unit, prevents from suffering from
The saliva of person and/or aerosol are distributed and are propagated in air, avoid threatening to the health of medical worker；By purifier
It completes the cleaned air after disinfection and can retransfer by wind turbine to blow out in the first exhaust air flue, then be isolation air curtain
Formation provide support, to complete recycling to the air in environment.Be arranged in first exhaust air flue for make every
From air curtain to the inclined gib block in patient direction, the normal direction of air curtain and the first exhaust air flue can be made to form 20 ° of angle,
Thus the gas control that the air curtain blown out from the first exhaust air flue can effectively breathe out patient is in its behind one small
In region, the gas is made to be not easy in the respiratory region for arriving at medical worker, the compacting polluted gas so as to reach best passes
The purpose broadcast, the preferable air-flow obstructed between patient and medical worker interact, and reduce aerosol aleopation in actual environment
Risk.
It should be understood that describing various information, but these information using term " first ", " second " etc. in the present invention
These terms are should not necessarily be limited by, these terms are only used for same type of information being distinguished from each other out.For example, not departing from the present invention
In the case of range, " first " information can also be referred to as " second " information, similar, and " second " information can also be referred to as
" first " information.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principle of the present invention, several improvement and deformations can also be made, these improvement and deformations are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of protective device for being isolated, which is characterized in that including frame main body, clean unit, be set to it is described
The inside of frame main body simultaneously makes its internal wind turbine for forming positive and negative pressure and is used to form the first exhaust air flue of isolation air curtain, institute
The air inlet of wind turbine is stated for sucking extraneous air, the clean unit is set to the inside of the frame main body, and with it is described
The air inlet of wind turbine is connected, and the air outlet of the wind turbine is connected with first exhaust air flue, first exhaust air flue
It is set to the top of the frame main body, and first exhaust air flue is parallel with the long side of the frame main body, described
It is equipped in one exhaust air flue at least a piece of for making isolation air curtain carry out inclined gib block, and the guiding to source of infection direction
Item and the angle of the normal direction of first exhaust air flue are 15 °~25 °.
2. the protective device according to claim 1 for being isolated, which is characterized in that each gib block is mutual
Parallel arrangement, and the interval between each gib block is equal.
3. the protective device according to claim 1 for being isolated, which is characterized in that the frame main body is located at
Inlet scoop is respectively equipped on the side at the both ends of first exhaust air flue, the inlet scoop is connected with the air inlet of the wind turbine
It is logical, and the clean unit is communicated between the inlet scoop and the import of the wind turbine.
4. the protective device according to claim 3 for being isolated, which is characterized in that the clean unit include according to
The secondary primary efficient filter screen being connected, disinfection unit and high efficiency particulate air filter, the inlet scoop are connected with the primary efficient filter screen
Logical, the high efficiency particulate air filter is connected with the air inlet of the wind turbine.
5. the protective device according to any one of claims 1 to 4 for being isolated, which is characterized in that further include drum
Bellows, the bellows are set to the inside of the frame main body, the entrance phase of the air outlet of the wind turbine and the bellows
Connection, the outlet of the bellows is connected with first exhaust air flue.
6. the protective device according to claim 5 for being isolated, which is characterized in that the bellows is Y funnels
Shape structure, the entrance of the bellows are located at its side, the outlet of the bellows is located at its top, and the bellows goes out
The equal length of the length and first exhaust air flue of mouth.
7. to require the protective device for being isolated described in 5 according to right, which is characterized in that the air-supply speed of the wind turbine
Degree is 2m/s~4m/s.
8. the protective device according to claim 5 for being isolated, which is characterized in that the top of the frame main body
Equipped at least one the second exhaust air flues, second exhaust air flue is arranged along the width direction of the frame main body, and described
The first end of second exhaust air flue is connected with the end of first exhaust air flue.
9. the protective device according to claim 8 for being isolated, which is characterized in that close in the frame main body
It need to vertically be equipped at least one third exhaust air flue, the end of the third exhaust air flue and institute on the side of the side of protection
The second end for stating the second exhaust air flue is connected.
10. the protective device according to claim 1 for being isolated, which is characterized in that further include control unit, institute
It includes main control module, the detection module for detecting wind speed and the touch screen being set in the frame main body to state control unit,
The touch screen is electrically connected with the main control module, and the main control module respectively with the detection module, wind turbine, described
Clean unit is electrically connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810544080.5A CN108592290B (en) | 2018-05-29 | 2018-05-29 | Protective device for isolating |
| PCT/CN2018/111292 WO2019227829A1 (en) | 2018-05-29 | 2018-10-22 | Protective device for isolation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810544080.5A CN108592290B (en) | 2018-05-29 | 2018-05-29 | Protective device for isolating |
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| WO (1) | WO2019227829A1 (en) |
Cited By (4)
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|---|---|---|---|---|
| WO2019227829A1 (en) * | 2018-05-29 | 2019-12-05 | 广东省南山医药创新研究院 | Protective device for isolation |
| US20220120459A1 (en) * | 2020-10-21 | 2022-04-21 | Paul Bemis | Tabletop bio-safty air curtain |
| US20220205657A1 (en) * | 2020-12-28 | 2022-06-30 | Kenneth Perlin | Method and Apparatus for Producing a Clean Air Curtain |
| JPWO2022149271A1 (en) * | 2021-01-08 | 2022-07-14 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102021123757A1 (en) | 2021-09-14 | 2023-03-16 | Ford Global Technologies, Llc | Ventilation system and method for creating private hygiene zones in a vehicle interior |
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| WO2019227829A1 (en) | 2019-12-05 |
| CN108592290B (en) | 2024-01-30 |
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