CN203816644U - Biological safety cabinet - Google Patents
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- CN203816644U CN203816644U CN201320743930.7U CN201320743930U CN203816644U CN 203816644 U CN203816644 U CN 203816644U CN 201320743930 U CN201320743930 U CN 201320743930U CN 203816644 U CN203816644 U CN 203816644U
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- biohazard safety
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- filtering area
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- 230000008901 benefit Effects 0.000 abstract description 3
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
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Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Ventilation (AREA)
Abstract
The utility model discloses a biological safety cabinet. The biological safety cabinet is characterized in that an operation opening is formed in the wall side of a cabinet body; the biological safety cabinet also comprises a filter and a fan; a working area capable of operating in the biological safety cabinet and a filtration area under positive pressure are formed in the biological safety cabinet; air out of the biological safety cabinet is pumped to an air inlet of the fan through the operation opening and an air channel; air in the filtration area is provided by an air outlet of the fan, filtered and subsequently discharged out of the filtration area; an air channel under negative pressure is formed by inner parts of double-layer bag bodies in the biological safety cabinet, thus isolating the air in the air channel from the wall side of the cabinet body, thereby surrounding the positive pressure in the filtration area by using the negative pressure. The biological safety cabinet has the cost advantage and is relatively reliable to seal and convenient to disinfect and replace.
Description
Technical field
The present invention relates to a kind of Biohazard Safety Equipment, relate more specifically to the utricule Biohazard Safety Equipment in air channel as a whole.
Background technology
Biohazard Safety Equipment is while having infective experiment material for operation primary culture, bacterium strain and diagnostic sample etc.; be used for protecting operator, laboratory environment and experiment material, make it avoid being exposed to issuable infectious aerosol and spatters in aforesaid operations process and design.When operating liquid or semifluid, for example, shake, pour into, stir, or when fluid drips is added on the surface of solids or in another kind of liquid, all likely produce aerosol.To agar plate streak inoculation, with suction pipe inoculating cell blake bottle, adopt multiple tracks sample injector that the suspension of infectious reagent is transferred in microtest plate to, infectious substance is carried out homogenate and vortex vibration, infectious liquid carried out centrifugal and while carrying out animal operation, these laboratory operation all may produce infectious aerosol.Because naked eyes cannot see that it is the fine droplet of 5～100 microns that diameter is less than the aerosol of 5 microns and diameter, therefore the particle that laboratory worker is unaware of such size is conventionally generating, and may suck or the other materials of cross pollution work top.Show, correctly use Biohazard Safety Equipment can effectively reduce because aerosol exposes the laboratory infection and the culture cross pollution that cause.Biohazard Safety Equipment simultaneously also can protection of the environment.
At present, Biohazard Safety Equipment is roughly divided into three ranks: I level Biohazard Safety Equipment is only protected staff and environment and do not protected sample.II level Biohazard Safety Equipment is the cabinet type being most widely used at present, is the safety cabinet that has front window gathering hole 20, and operator can operate by front window gathering hole 20 in safety cabinet, and the personnel in operating process, product and environment are protected.III level Biohazard Safety Equipment designs for 4 grades of laboratory bio-safety grades, cabinet is completely airtight, staff operates by the gloves that are connected to cabinet, be commonly called as glove box, trial target is not contaminated to guarantee by two-door pass box turnover safety cabinet, is applicable to high risk biologic test.
For many years, the Basic Design of Biohazard Safety Equipment has experienced repeatedly and has improved.Main variation is to have increased efficient air purifier (HEPA filter) at exhaust system.For the particle of 0.3 micron of diameter, HEPA filter can hold back 99.97%, can hold back 99.99% for greater or lesser particle.This specific character of HEPA filter makes it can effectively hold back all known infectious agents, and what guarantee to discharge from safety cabinet is completely not containing the air of microorganism.Second improvement in Biohazard Safety Equipment design is to be transported on work top through HEPA filtered air, thereby the article on protection work top are not contaminated.
Biohazard Safety Equipment detects existing main standard according to having the EN12469 of European Union, U.S. NSF/ANSI49 and People's Republic of China's pharmaceuticals industry standard " Biohazard Safety Equipment " YY0569-2005.Wherein, the YY0569 professional standard of China has clearly specified the design standard of the cabinet body structure of safety cabinet: all gdna contaminations of safety cabinet all should surround in negative pressure state or by negative pressure channel and exhaust ventilation system.In II, the exposed workspace of III level security cabinet, three sidewall panelings should be integrated formed structure, and encapsulation process etc. must be done in the stitching portion of inner surface.
For Biohazard Safety Equipment, the sealing of cabinet is particularly important.The first is considered to prevent to cause pathogen propagation by structure gap is excessive.It two is to consider to be designed to available formaldehyde steam and to sterilize under the condition of not dismantling.As already mentioned, the hollow space between operating area inner side wall plate and external wallboard is negative pressure.Because cabinet inner space 1 is malleation, so if having housing breakage and leakage point to exist, will produce outside leakage.Therefore protect the possibility that can effectively reduce leakage at sidewall and backboard formation negative pressure.
In addition, operating area inner side wall plate is integrated design, and any two Plane intersects places are without seam, and has 3mm circular arc.Three Plane intersects places are without seam, and have 6mm circular arc.The benefit of doing is like this exactly the possibility that all gdna contaminations of safety cabinet workspace are not all concealed risk factor, the particulate that all tests produce all can be finally filtered by negative-pressure air-flow inspiration exhaust ventilation system, is also extremely convenient to cabinet to carry out cleaning and disinfection.
For example, CN2843457Y discloses a kind of this with double-deck Biohazard Safety Equipment.This Biohazard Safety Equipment comprises the cabinet being surrounded by left side wall, right side wall, roof, diapire and rear wall, cabinet middle part arranges middle cross beam and along the horizontally disposed intermediate bulkheads of middle cross beam, cabinet is divided into top filtering area and workspace, bottom by intermediate bulkheads, the front portion of filtering area arranges sealing baffle, the anterior setting in workspace is the door body of push-and-pull up and down, and at least the cabinet part of workspace is formed the air channel of hollow by inner bag and outer wall.In filtering area, be provided with the blower fan being communicated with air channel, the air-permeative filter layer that can blow by blower fan is set in the roof of cabinet and/or intermediate bulkheads, and at least the middle and lower part outside outside and left side wall and the right side wall inner bag of workspace diapire inner bag arranges the air inlet being communicated with air channel.The air inlet in the outside of described left side wall and right side wall inner bag extends to the crossbeam position at top.
A kind of Biohazard Safety Equipment with traditional air chute has been shown in Fig. 1.This Biohazard Safety Equipment is double-decker, and comprises the cabinet being surrounded by Zuo Bi, You Bi, antetheca, rear wall, roof and diapire and the next door that is arranged on cabinet inside around cabinet, thereby forms inner-tube structure.In addition, this Biohazard Safety Equipment is provided with intermediate bulkheads, and in cabinet, is also provided with two efficient air purifiers (HEPA filter) that for example approximate horizontal arranges.For example, top efficient air purifier is arranged on roof, and below efficient air purifier can be arranged in the intermediate bulkheads of cabinet, thereby cabinet is divided into top filtering area and workspace, bottom.The blower fan being communicated with air channel is set in filtering area.Be positioned at each inner bag next door of intermediate bulkheads top and HEPA and blower fan and form the filtering area in negative pressure, each inner bag next door and cabinet next door form region in negative pressure, are also referred to as the air channel of Biohazard Safety Equipment.
In the time using Biohazard Safety Equipment, start blower fan, by the air channel and the air inlet that are communicated with blower fan, the air in workspace flows to the blower fan in the filtering area of top, that is and, the filtering area on top, cabinet next door sent into the air of suction by blower fan by air channel.In the time being provided with ventilative HEPA filter as shown in fig. 1 in roof and intermediate bulkheads, an air part in filtering area enters in atmosphere by the filter on roof, and another part is by being positioned at the workspace that enters cabinet bottom after the filter in intermediate bulkheads.Air with virus or germ passes through after the filtration of filter, and major part virus or germ are wherein adsorbed or kill, and become pure air, can prevent that the gas that enters atmosphere in cabinet from carrying virus or germ simultaneously, produces harm.
But at present known all to comprise double-deck Biohazard Safety Equipment be all that inner cabinet institute is had living space all as air channel, thereby cause gas positive pressure and negative pressure to be full of whole cabinet.And the instructions for use air channel of Biohazard Safety Equipment is the structure of sealing, do not allow any leakage, be therefore whole sealings to the requirement of whole cabinet, the leakage part of any turning and joint is unacceptable.In order to realize this requirement; normally adopt high-intensity panel beating for example, as cabinet shell (, the standard-required of U.S.'s Biohazard Safety Equipment is steel construction cabinet, requires negative pressure protection) simultaneously; with any turning of silica gel sealing and joint, thereby produce expensive material and more production cost.
Therefore, there is the demand that the Biohazard Safety Equipment that a kind of sealing is more reliable, cost is lower and simple in structure is provided always, especially will guarantee the air-tightness in safety cabinet air channel.
Utility model content
The technical problem solving
Biohazard Safety Equipment of the present utility model solves the higher and sealing problem not reliably of the cost of Biohazard Safety Equipment of the prior art.
For this reason, the purpose of this utility model is to provide one to have cost advantage, seal more reliable, be convenient to sterilization and change Biohazard Safety Equipment Duct design.
The technological means of dealing with problems
The utility model provides a kind of Biohazard Safety Equipment, this Biohazard Safety Equipment has gathering hole at cabinet wall, this Biohazard Safety Equipment also comprises blower fan, and in this Biohazard Safety Equipment, be formed with the workspace that can operate therein and be formed with filtering area, gas outside this Biohazard Safety Equipment is via gathering hole, be sucked into the air inlet of this blower fan by air channel, wherein, this gas enters this filtering area inside by the air outlet of this blower fan, to form malleation in this filtering area, this gas is discharged to this filtering area outside after filtration, this air channel is formed by the inside of the double-deck utricule that is positioned at this Biohazard Safety Equipment, to make negative-pressure gas and the isolation of cabinet wall in this air channel, and make this negative pressure surround the malleation in this filtering area.Particularly, filtering area is by this bilayer utricule sealing.
In addition, above-mentioned filtering area is surrounded and is formed by filter, this blower fan and this bilayer utricule, and the gas in this filtering area filters by this filter.
Particularly, this filter comprises the first filter and the second filter, and a part that comes from the gas of the air outlet of this blower fan is discharged in the environment outside this Biohazard Safety Equipment via the first filter, and another part is discharged in this workspace via the second filter.
In addition, this Biohazard Safety Equipment also can comprise intermediate bulkheads, and this filtering area is positioned at this intermediate bulkheads top, and this workspace is positioned at this intermediate bulkheads below.For example, the first filter bits is in the roof inner side of Biohazard Safety Equipment, and the second filter is arranged in this intermediate bulkheads.
In addition, be provided with the lower clapboard for laying test material in this workspace, the diapire of this lower clapboard and Biohazard Safety Equipment forms lower air duct, and this lower air duct is communicated with the described air channel fluid being formed by described bilayer vesicles body, thereby also in negative pressure.
In described lower air duct, also can be provided with another blower fan, to strengthen the suction function in air channel.On the one hand, the gas of workspace enters described lower air duct via the hole on described lower clapboard.On the other hand, the surrounding air being positioned at outside Biohazard Safety Equipment enters this lower air duct by this gathering hole and via the hole on this lower clapboard.
Preferably, the mode that this bilayer utricule is pricked by bundle directly bag arrives this filter and this blower fan place.
The beneficial effect of utility model
Design of the present utility model is to adopt the double-deck utricule replacement tradition of for example flexible material all to form integral air duct in air channels, be concentrated among this utricule inside and outside two-layer so that safety cabinet inside is full of the region of negative pressure, and the region that is full of malleation is concentrated in by among utricule and region that such as other structure such as HEPA filtering area and blower fan is surrounded.
On the one hand, due to the region of needs sealing is concentrated as the utricule to high concentration from original whole cabinet, safety cabinet external shell no longer needs to provide sealing function, and be only to provide a frame structure, play the effect of fixing envelope type integral air duct, thereby significantly reduce the cost of cabinet material and sealing, therefore more economical.
On the other hand, this utricule has structure and is convenient to customization, and the number of plies is convenient to increase, for customizing the characteristic device curve of different structure and sealing reliability.Meanwhile, because contaminated region height concentrates in this utricule air channel, the therefore sterilization of Polluted area, even changes and also becomes easier.
Brief description of the drawings
Fig. 1 illustrate comprise traditional air chute according to the structural representation of the Biohazard Safety Equipment of prior art, and
Fig. 2 illustrates according to of the present utility model the utricule structural representation of the Biohazard Safety Equipment in air channel as a whole.
Detailed description of the invention
Biohazard Safety Equipment of the present utility model comprises cabinet 10, and this cabinet can be for example by making such as the hard material such as steel or glass, thereby meets the requirement of strength of frame supported.For example, as shown in Figure 2, this cabinet 10 can comprise left side wall, right side wall, antetheca, rear wall, roof and diapire, but is not limited to this.It should be noted that, any noun of locality occurring in this article, as " on ", D score, " left side ", " right side ", 'fornt', 'back' be not all restrictive, only plays the effect of description architecture and signal.
Conventionally, have gathering hole 20 in one in above-mentioned each wall of cabinet, with so that air can flow in Biohazard Safety Equipment, and in order to experiment material is put into safety cabinet or is taken out experiment material from safety cabinet by this gathering hole 20.This gathering hole 20 is preferably positioned on the antetheca of Biohazard Safety Equipment, its below particularly, and therefore this gathering hole is also referred to as front window gathering hole.As required, the door body that at least a portion of antetheca also can be designed to push-and-pull up and down only to form when needed gathering hole 20, and seals this Biohazard Safety Equipment in the time not needing.Preferably, the antetheca of cabinet is outward-dipping from top to bottom.
For example, this Biohazard Safety Equipment also can comprise filter 30,40 and blower fan 50.These filters 30,40 can comprise the material, particularly efficient air purifier (HEPA filtering area) of filtering gas.Efficient air purifier 30,40 is for filtering the gas that comes from blower fan 50.Conventionally; in Biohazard Safety Equipment, be provided with at least two filters; thereby the dangerous particulate filters such as the aerosol that makes on the one hand air in workspace reach the cleanliness factor of regulation and to produce in sample during by test fall the cross pollution of protection test material, prevent that on the other hand Biohazard Safety Equipment is directly discharged into the dangerous particle in air in environment and goes.In other words, filter is set in order to ensure that outer row and inner down current are all the clean gas flows through filtering.
Different from the prior art of describing in background technology, Biohazard Safety Equipment of the present utility model comes particularly to replace on the whole traditional cabinet inner-tube structure with double-deck utricule, so that the cabinet of safety cabinet no longer needs to provide sealing function.Specifically, in Biohazard Safety Equipment, be provided with the filtering area 1 in malleation.Particularly, this filtering area 1 can be formed by a part for filter 30,40, blower fan 50 and double-deck utricule 60.As shown in Figure 2, in some cases, this filtering area 1 is surrounded and is formed by a part for two filters, a blower fan 50 and double-deck utricule.As example, by a part for flexible utricule, be for example internal layer (with respect to external environment condition), the air outlet of each filter 30,40 and blower fan 50 is packed together, so that the air in filtering area 1 is provided by the air outlet of blower fan 50, and air in filtering area only can be discharged to outside filtering area by filter 30,40.
In addition, the inside of double-deck utricule 60, the region between internal layer 60A and the outer 60B of utricule is connected with the air inlet of blower fan 50.Because the draft effect of blower fan 50 is formed on the inner negative pressure that forms of utricule 60, can make negative pressure surround the malleation in filtering area 1.In the text, the inside of the utricule 60 in negative pressure forms the air channel of Biohazard Safety Equipment.Therefore, can meet the authentication requesting of Biohazard Safety Equipment, that is, and the characteristic that barotropic field need to be surrounded by negative pressure region.Like this, carry out test operation in Biohazard Safety Equipment time, the dangerous particles such as geogas aerosol that test material discharges are due to the suction function of the down current in workspace and bottom, operating space, around not being diffused into or before outside effusion cabinet just by direct negative suction air channel, the pure air after filtering by high efficiency particulate air filter or be partially recycled in operating space or outer being discharged in environment.Seen from the above description, in the region of the air inlet of above-mentioned blower fan 50 between internal layer 60A and the outer 60B of utricule 60, and the air outlet of blower fan 50 is positioned at filtering area 1.
In particularly advantageous embodiment, the pars intermedia office in the short transverse of this cabinet is provided with intermediate bulkheads 70.This intermediate bulkheads 70 preferably with roof or diapire almost parallel, and be connected in known manner with right side wall with left side wall.Particularly, at least one filter 30 can be arranged on the roof of cabinet, and at least one filter 40 can be arranged in intermediate bulkheads 70, and blower fan 50 or its air outlet are positioned at the top of intermediate bulkheads 70.Thereby, form the filtering area 1 in malleation in the region being positioned at above intermediate bulkheads 70 of cabinet, form workspace 5 in the region being positioned at below intermediate bulkheads 70 of cabinet.
By in filter at least one, be for example the first filter 30 in roof, can be discharged to Biohazard Safety Equipment outside via this first filter from the gas of the air outlet of blower fan 50.Equally, by filter at least another, be for example the second filter 40 that is positioned at intermediate bulkheads 70, can be discharged in the workspace 5 of Biohazard Safety Equipment via this second filter from the gas of the air outlet of blower fan 50.This workspace 5 is positioned at outside filtering area 1 in Biohazard Safety Equipment.The minimum of the air velocity being entered by gathering hole 20 in addition, or mean value meet the authentication requesting of Biohazard Safety Equipment.
, in intermediate bulkheads 70, open with sidewall spacers preferably in embodiment at some, the part being positioned at outside filtering area 1 of double-deck utricule can be extended at the lower zone of intermediate bulkheads.For example, as shown in the cutaway view in Fig. 2, air channel 3 with form utricule 60 inside of filtering area, the air channel 2,4 between internal layer 60A and the outer 60B of utricule be spatially communicate, be fluid connection, thereby whole air channel is all in negative pressure.
In addition, workspace 5 and the gathering hole 20 of cabinet, cabinet is outside is communicated with, and operator can put into this workspace by gathering hole 20 by experiment material and carry out work.In workspace, can be provided with and the isolated lower clapboard 80 of diapire of cabinet, this lower clapboard, as the operating platform of safety cabinet, can be placed the experiment material that needs operation.Particularly, this lower clapboard 80 forms the lower air duct of Biohazard Safety Equipment together with diapire.For example, can in this lower clapboard 80, be provided with at least one air supply opening 82,84, so that from the gas of cabinet outside and from filtering area 1 be recycled to gas in workspace 5 via this at least one air supply opening 82,84, in other words this lower air duct flow into double-deck utricule 60 inside, between the internal layer 60A and outer 60B of double-deck utricule, being aspirated by blower fan 50.
In addition, as shown in Figure 2, blower fan 50 is arranged on cabinet top, so that its air outlet is positioned at filtering area, in the lower air duct of bottom of cabinet bulk, be also provided with blower fan (not shown) but also can imagine, to strengthen suction intensity, thereby in utricule air channel, produce larger underbalance effect.
Preferably, as shown in Figure 2, be also provided with in these main air duct 3 outsides can with the isolated side dividing plate 90 in workspace so that operator can directly not have influence on to the operation of experiment material the air channel being made up of flexible utricule 60, thereby play the effect of blocking.
Utricule in literary composition generally relates to and adopts double-deck, the better wrappage of being made up of flexible material.The material of utricule includes but not limited to it is cloth, rubber, as long as meet desired sealing, and can bearing certain pressure.The part place being connected with blower fan or filter at utricule, can be used elastomeric material, so that it is between utricule and blower fan or filter, thereby ensures the sealing of coupling part.But also can adopt and for example there is flexible material and directly restraint bundle.Preferably, the mode that double-deck utricule can be pricked by bundle is directly wrapped on for example filter 30,40 and/or blower fan 50, installs and sealing to realize.Those skilled in the art also can imagine the mode of other connection utricule, for example so that utricule with respect to cabinet solid.
Utricule is as the implication in " monoblock type air channel " described in literary composition, by the inner bag diaphragm structure in whole utricule replacement traditional biological safety cabinet, instead of replaces diaphragm structure partly.In other words, the air channel of Biohazard Safety Equipment is changed into from the region between inner bag dividing plate and cabinet wall completely in utricule inside, i.e. region between internal layer and the skin of utricule, and this integral air duct need not form by any dividing plate in the cabinet of Biohazard Safety Equipment and wall (except playing the optional side dividing plate 90 of the effect of blocking) substantially.In other words, Biohazard Safety Equipment mainly only has the air channel being formed by the inside of double-deck utricule.
Utricule inside described in literary composition refers to the part between internal layer and the skin of utricule, instead of refers in Biohazard Safety Equipment with respect to utricule in interior part.In addition, the internal layer of utricule and skin are also relative concepts, and for example, that layer in filtering area is called as internal layer, is called as skin away from that layer of filtering area.
Next, describe the flexible utricule air flow path of the Biohazard Safety Equipment in air channel as a whole by the dotted arrow of Fig. 2.
In the time using Biohazard Safety Equipment, experiment material is put into workspace 5, then start blower fan 50.By double-deck utricule 60 inside that are communicated with the air inlet of blower fan 50, enter the gas of safety cabinet, for example downwards flow into double-deck utricule 60 inside via at least one opening in lower clapboard, and be for example drawn in blower fan 50 to top from the gas in workspace 5 and/or from gathering hole 20.Between the inside of utricule 60, i.e. the internal layer 60A of utricule and outer 60B in negative pressure.Then, blower fan 50 is sent into the air of suction in the filtering area 1 that is for example arranged on cabinet intermediate bulkheads top, and the pressure of filtering area 1 is greater than the pressure of workspace 5, and in malleation, therefore, the negative pressure in utricule is surrounded the malleation in filtering area 1.In the time being provided with ventilative HEPA as shown in Figure 2 in roof and intermediate bulkheads 70, a part of gas in filtering area 1 enters in atmosphere by the filter 30 on roof, and another part is by being positioned at the workspace of the rear circulation inflow of the filter 40 cabinet bottom in intermediate bulkheads 70.
Although described the utility model with reference to its example embodiment, it will be appreciated by those skilled in the art that and can under the condition that does not depart from the utility model scope, carry out various changes and replace each member of the present utility model with being equal to member.In addition, can make many amendments so that particular condition or material adapt to explanation of the present utility model, and not depart from essential scope of the present utility model.Therefore, the utility model is not limited to enforcement the utility model and is considered as the disclosed specific embodiment of optimal mode, and the utility model can comprise all embodiment that fall into claims scope.
Claims (11)
1. a Biohazard Safety Equipment, described Biohazard Safety Equipment has gathering hole at cabinet wall, described Biohazard Safety Equipment also comprises blower fan, and in described Biohazard Safety Equipment, be formed with workspace and filtering area, operating personnel can be in described workspace operating operation test material, gas outside described Biohazard Safety Equipment via described gathering hole, be sucked into the air inlet of described blower fan by air channel
It is characterized in that, described gas enters described filtering area inside by the air outlet of described blower fan, to form malleation in described filtering area, described gas is discharged to described filtering area outside after filtration, described air channel is formed by the inside of the double-deck utricule that is positioned at described Biohazard Safety Equipment, to make negative-pressure gas and the isolation of cabinet wall in described air channel, and make negative pressure surround the malleation in described filtering area.
2. Biohazard Safety Equipment as claimed in claim 1, is characterized in that, described filtering area is by described double-deck utricule sealing.
3. Biohazard Safety Equipment as claimed in claim 1 or 2, is characterized in that, described filtering area is formed by a part for filter, described blower fan and described double-deck utricule, and the described gas in described filtering area filters by described filter.
4. Biohazard Safety Equipment as claimed in claim 3, it is characterized in that, described filter comprises the first filter and the second filter, a part that comes from the gas of the air outlet of described blower fan is discharged in the environment outside described Biohazard Safety Equipment via described the first filter, and another part is discharged in described workspace via described the second filter.
5. Biohazard Safety Equipment as claimed in claim 4, is characterized in that, also comprises intermediate bulkheads, and described filtering area is positioned at described intermediate bulkheads top, and described workspace is positioned at described intermediate bulkheads below.
6. Biohazard Safety Equipment as claimed in claim 5, is characterized in that, described the first filter bits is in the roof inner side of Biohazard Safety Equipment, and described the second filter is arranged in described intermediate bulkheads.
7. Biohazard Safety Equipment as claimed in claim 1, it is characterized in that, in described workspace, be provided with the lower clapboard for laying test material, the diapire of described lower clapboard and Biohazard Safety Equipment forms lower air duct, described lower air duct is communicated with the described air channel fluid being formed by described bilayer vesicles body, thereby also in negative pressure.
8. Biohazard Safety Equipment as claimed in claim 7, is characterized in that, is also provided with another blower fan in described lower air duct, to strengthen the suction function in air channel.
9. Biohazard Safety Equipment as claimed in claim 7, is characterized in that, the gas of described workspace enters described lower air duct via the hole on described lower clapboard.
10. Biohazard Safety Equipment as claimed in claim 7, is characterized in that, the surrounding air being positioned at outside Biohazard Safety Equipment enters described lower air duct by described gathering hole and via the hole on described lower clapboard.
11. Biohazard Safety Equipments as claimed in claim 1, is characterized in that, the mode that described double-deck utricule is pricked by bundle directly bag arrives described filter and described blower fan place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743930.7U CN203816644U (en) | 2013-11-21 | 2013-11-21 | Biological safety cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743930.7U CN203816644U (en) | 2013-11-21 | 2013-11-21 | Biological safety cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203816644U true CN203816644U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320743930.7U Expired - Lifetime CN203816644U (en) | 2013-11-21 | 2013-11-21 | Biological safety cabinet |
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| Country | Link |
|---|---|
| CN (1) | CN203816644U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107126982A (en) * | 2017-06-26 | 2017-09-05 | 太仓斯普宁精密机械有限公司 | One kind cleans easily Nagative pressure bio-safty cabinet |
| CN107457241A (en) * | 2017-08-14 | 2017-12-12 | 苏州万木春生物技术有限公司 | A kind of use for laboratory ventilating kitchen |
| CN111195636A (en) * | 2020-01-10 | 2020-05-26 | 上海瑞仰净化装备有限公司 | Secondary biological safety cabinet for omnibearing sample protection |
| CN114260031A (en) * | 2020-09-25 | 2022-04-01 | 博奥生物集团有限公司 | Biological safety cabinet |
-
2013
- 2013-11-21 CN CN201320743930.7U patent/CN203816644U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107126982A (en) * | 2017-06-26 | 2017-09-05 | 太仓斯普宁精密机械有限公司 | One kind cleans easily Nagative pressure bio-safty cabinet |
| CN107457241A (en) * | 2017-08-14 | 2017-12-12 | 苏州万木春生物技术有限公司 | A kind of use for laboratory ventilating kitchen |
| CN111195636A (en) * | 2020-01-10 | 2020-05-26 | 上海瑞仰净化装备有限公司 | Secondary biological safety cabinet for omnibearing sample protection |
| CN114260031A (en) * | 2020-09-25 | 2022-04-01 | 博奥生物集团有限公司 | Biological safety cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Thermo Fisher (Suzhou) Instrument Co.,Ltd. Assignor: THERMO FISHER SCIENTIFIC (SHANGHAI) INSTRUMENT Co.,Ltd. Contract record no.: X2021980002396 Denomination of utility model: Biosafety cabinet Granted publication date: 20140910 License type: Common License Record date: 20210401 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |