CN108435747A - Vent cabinet - Google Patents
Vent cabinet Download PDFInfo
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- CN108435747A CN108435747A CN201810444895.6A CN201810444895A CN108435747A CN 108435747 A CN108435747 A CN 108435747A CN 201810444895 A CN201810444895 A CN 201810444895A CN 108435747 A CN108435747 A CN 108435747A
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Abstract
The present invention provides a kind of vent cabinet that can be reduced air conditioning energy consumption, inhibit the overflow of harmful substance in working chamber, including：The inner cavity of cabinet, the cabinet constitutes working chamber, and antetheca forms the open open front of oriented indoor environment；The mend wind passage of air-makeup system, the air-makeup system and building connects, and wind is mended to working chamber；And exhaust system, the air exhaust passage of the exhaust system and building connects, the air for entering working chamber by the air for entering working chamber by open front and by air-makeup system is discharged from working chamber, air-makeup system respectively has at least one wind-supplying mouth in the upper and lower part of cabinet, and the wind-supplying mouth is towards blowing in working chamber.Since in cabinet, there are two wind-supplying mouths, the air quantity being sent into from open front can not only be reduced, to reduce air conditioning energy consumption, and since the setting of multiple wind-supplying mouths can establish stable plug-type air flow in working chamber, greatly reduce the risk of the air overflow in working chamber.
Description
The application is entitled《Vent cabinet》Application for a patent for invention divisional application, parent application number is
201510169620.2 applying date 2015.04.10, publication No. is 106140769 A of CN.
Technical field
The present invention relates to a kind of vent cabinet more particularly to a kind of air-replenishing type ventilating cabinets.
Background technology
Vent cabinet can generally be described as one for capturing, accommodate and scavenge, pernicious gas and particulate matter
Ventilation operation space.Most of traditional vent cabinet, which is used from open front place of vent cabinet to the working chamber of vent cabinet, to be sent into largely
Surrounding air, while air draft carries out the receiving and processing of harmful substance in air in working chamber with powerful wind turbine.
Under the design concept of tradition ventilation cabinet, the air quantity being sent into from open front is higher, control of the vent cabinet to harmful substance in air
It is more effective with discharge function, it is therefore desirable to which that heating ventilation air-conditioning system by building is to using the space of the vent cabinet for example to test
Room fills into large quantity of air to replace the surrounding air for being sent into vent cabinet from open front.Air due to filling into laboratory belongs to supply
For a part for laboratory environment air, it must be processed to identical surrounding air degree to ensure laboratory work environment
Comfortableness and security, therefore, the use of tradition ventilation cabinet generally result in laboratory etc. where building generate it is very big
Energy consumption.In addition, unpredictable and inconsistent air flow, such as the vortex type air near exhaust outlet and open front
Tissue can frequent occurrence.In this case, no matter the air velocity being sent into from open front is how many, the air body in working chamber
If being the risk for the air overflow for having sinuous flow and vortex to will result in working chamber, prestige is constituted to the health and safety of experimenter
The side of body.Therefore, pole needs new vent cabinet design structure and running technology to reduce energy consumption and reduce overflowing for harmful substance in working chamber
Flow risk.
The novel energy-saving environment-friendly type vent cabinet of vent cabinet in the market is air-replenishing type ventilating cabinet at present.By in the upper of cabinet
A wind-supplying mouth is arranged in side or lower section, and the work that compensation current is blown into vent cabinet is obtained from the pneumatic Force system of benefit of building
The air conditioning energy consumption of building caused by due to mending wind has been saved in chamber, such design to a certain extent.However, existing is novel logical
The single benefit general mood stream of wind cabinet can not set up stable air flow in the working chamber of vent cabinet, so air
Sinuous flow and eddy current problem are still unresolved, and the overflow risk for endangering experimenter's health and safety still exists.
Invention content
Problem to be solved by the invention
The present invention makes in view of the above problems, it is intended that air conditioning energy consumption can be reduced, inhibit work by providing one kind
The vent cabinet of the overflow of intracavitary harmful substance.
The means used to solve the problem
To solve the above-mentioned problems, vent cabinet of the invention, including：The inner cavity of cabinet, the cabinet constitutes working chamber, and preceding
Wall forms the open open front of oriented indoor environment；The mend wind passage of air-makeup system, the air-makeup system and building connects, to institute
It states working chamber and mends wind；And exhaust system, the air exhaust passage of the exhaust system and building connect, will pass through the open front into
The air for entering the air of the working chamber and entering the working chamber by the air-makeup system is discharged from the working chamber, described
Air-makeup system respectively has at least one wind-supplying mouth in the upper and lower part of the cabinet, and the wind-supplying mouth is towards sending in the working chamber
Wind.
Using the above structure, since respectively there is at least one wind-supplying mouth in the top and the bottom of cabinet, it can not only reduce
The air quantity being sent into from open front, to reduce air conditioning energy consumption, and since the setting of multiple wind-supplying mouths can be built-in in working chamber
Stable plug-type air flow is found, therefore greatly reduces the risk of the air overflow in working chamber.
In addition, it is preferable that the left and right sidewall of the cabinet is hollow double-layer structure, is located at the benefit wind on cabinet top
Channel is connected to the mend wind passage positioned at cabinet lower part by the hollow space of the left and right sidewall.
Using the above structure, the hollow space that the mend wind passage positioned at cabinet top and the bottom passes through side wall is made to communicate with each other, because
This has both saved space without in addition setting connecting pipe, in turn simplifies process of the user in installation vent cabinet for the first time.
In addition, it is preferable that the exhaust system is in the top of the cabinet and the position of the rear wall of the close cabinet
With air draft region, which extends in the entire left and right width direction of the cabinet.
Using the above structure, since air draft region is located at cabinet top and close to the position of cabinet rear wall, is conducive to
The formation of above-mentioned plug-type air flow.In addition, since air draft region extends in the entire left and right width direction of cabinet,
Therefore it can be formed about air eddy to avoid the top exhaust outlet in working chamber, and it includes that aftermentioned base cabinet air exhaust passage exists to be
The connection of interior entire exhaust system provides possibility.
In addition, it is preferable that each wind-supplying mouth extends respectively along the left and right width direction of the working chamber, Duo Gesuo
Stating wind-supplying mouth includes：The first wind-supplying mouth positioned at the top of the open front；Second positioned at the lower section of the open front mends
Air port；And the third wind-supplying mouth positioned at the top of the cabinet and the outside of the antetheca, the third wind-supplying mouth is described in
It blows in the working chamber and lower section of the cabinet.
Using the above structure, be conducive to the formation of above-mentioned plug-type air flow.Also, since wind-supplying mouth is along work
The left and right width direction for making chamber extends, therefore can equably send out air, prevents the formation of turbulent flow.In addition, since third is mended
Air port is dried downwards, which is located just at the position of breathing of operating personnel, therefore can further reduction operation people
The risk of member's sucking harmful substance, and the wind blown out downwards forms " air barrier ", can play in buffering working chamber
With the effect of cabinet external environment air, it effectively prevent overflow risk.
In addition, it is preferable that the working chamber has to incline rearwardly and upwardly from first wind-supplying mouth towards the air draft region
The sloping top walls tiltedly extended.
Using the above structure, it can prevent from forming vortex at the top of working chamber, work intracavity gas can be made from above-mentioned first
Gas supplementing opening is slowly uniformly climbed along sloping top walls to above-mentioned exhaust zone domain.
In addition, it is preferable that deflector is equipped in the working chamber, which close to the rear wall uprightly sets
It sets, and upper end extends towards the air draft region, multiple through holes, multiple through hole is equipped in the lower part of the deflector
It is distributed in the entire left and right width direction of the deflector.
Using the above structure, the production for being conducive to the gas in working chamber being oriented to above-mentioned exhaust gas region and avoiding air-swirl
It is raw, also, since the through hole on deflector is distributed in the entire left and right width direction of deflector, help to provide whole
The almost the same continuous air draft in the wide face of a working chamber.
In addition, it is preferable that be equipped at least one base cabinet in the lower section of the cabinet, the inner cavity of the base cabinet is arranged by base cabinet
Wind channel and the air draft regional connectivity, the base cabinet air exhaust passage are located at the hollow space of at least one of described left and right sidewall
It is interior, close to the rear wall and vertically extend.
Using the above structure, the pernicious gas that can will be generated due to storage volatile reagent or toxic material in base cabinet
Discharge is outdoor.Also, since base cabinet air exhaust passage is arranged in the hollow space of side wall, space is not only saved, but also simplify
Process of the user in installation vent cabinet for the first time.
In addition, it is preferable that be respectively equipped with flow deflector on each wind-supplying mouth.
Using the above structure, turbulent flow can be made to minimize, it is ensured that mend general mood stream and uniformly slowly blown out along direction initialization.
In addition, it is preferable that second wind-supplying mouth is externally provided with the protective grille for surrounding second wind-supplying mouth, the third
Wind-supplying mouth is externally provided with the protective grille for surrounding the third wind-supplying mouth.
Using the above structure, not only can effectively reduce wind-supplying mouth material deterioration inside, but can further help bottom mend wind air at
Working chamber is filled into for laminar flow, sundries is also prevented from and enters wind-supplying mouth.
In addition, it is preferable that be equipped with top module above the cabinet, the benefit wind system is installed in the top module
The valve for air exhaust for mending air valve and the exhaust system of system；
Each mend wind passage for mending air valve and each wind-supplying mouth is connected to communicate with each other；
The air draft region of the exhaust system is connect with the valve for air exhaust.
In addition, it is preferable that the benefit air valve is connected to wind wind turbine is mended, and the valve for air exhaust is connected to exhaust fan.
In addition, it is preferable that the benefit wind wind turbine and the exhaust fan are mounted in the top module.
In the prior art, vent cabinet in the market relies on the unified air-makeup system of building and exhaust system is obtained and moved
Power, if occurring, multiple vent cabinets are parallel simultaneously to be used, and row's benefit air quantity can not achieve to be adjusted according to the individual character needed for service condition, such as
This will also result in the higher result of energy consumption.Also, during installation and debugging, vent cabinet and its control system are typically using scattered
Component is interim assembled at the scene, therefore there is a problem of that installation cost is high, the consistency of product quality is poor.
Using the above structure of the application, vent cabinet itself there is exhaust fan and valve for air exhaust and mend wind wind turbine and
Mend air valve, thus can according to such as vent cabinet relative to the distance of the total output wind turbine of building, operating personnel whether position
In actual conditions such as setting regions, flexible design air draft air quantity and benefit wind air quantity further help in reduction energy consumption.Also, by
It is all integrated on top module possessed by vent cabinet in above-mentioned wind turbine and valve etc., there is no need to carry out on-site consolidation or to building
The ventilating system for building object carries out Secondary Design, and thus, it is possible to realize the reduction of installation cost.Further, due to being a highly integrated
Modularized design, therefore can ensure the consistency of product quality.
In addition, it is preferable that the benefit wind wind turbine and exhaust fan are respectively adjustable power type wind turbine, the benefit air valve
It is respectively aperture type variable valve with valve for air exhaust, the vent cabinet is additionally provided with：Sliding window, the sliding window can be along the open fronts
Sliding, the open area for adjusting the open front；Position sensor, the position sensor are located in the top module,
Position for detecting the sliding window；Air velocity transducer, the air velocity transducer are arranged close to the open front in the work
Make on the inner wall of chamber, the speed for detecting the air for entering the working chamber from the open front；Infrared detector, this is infrared
Detector is set to the antetheca of the top module, for detecting whether operating personnel are in setting regions；And control unit,
The control unit is located in the top module, with the position sensor, the air velocity transducer, the infrared detector,
The benefit wind wind turbine is connected with the benefit air valve and the exhaust fan with the valve for air exhaust, and is based on institute's rheme
The detection information of sensor, the air velocity transducer, the infrared detector is set to the power for mending wind wind turbine and the benefit
The aperture of the power and the valve for air exhaust of the aperture of air valve and the exhaust fan is adjusted.
It using the above structure, can be according to the actual use situation of vent cabinet itself, using automatic control system to mending wind wind
Machine and the power and aperture of benefit air valve and exhaust fan and valve for air exhaust are automatically adjusted, and are not only able to reduce air-conditioning
Energy consumption, and features simple structure save space, and greatly reduce the installation cost and maintenance cost of vent cabinet.
Description of the drawings
Fig. 1 is the front view of the vent cabinet of the better embodiment of the present invention.
Fig. 2 is the rear cross sectional view of the vent cabinet of the better embodiment of the present invention.
Fig. 3 is the stereogram of the vent cabinet of the better embodiment of the present invention.
Fig. 4 is the air-flow guiding figure of the vent cabinet of the better embodiment of the present invention.
Fig. 5 is the air-flow guiding figure of the air-makeup system of the vent cabinet of the better embodiment of the present invention.
Fig. 6 is the air-flow guiding figure of the exhaust system of the vent cabinet of the better embodiment of the present invention.
Symbol description
100 cabinets
102 working chambers
103 left and right sidewalls
104 roofs
105 base cabinets
106 rear walls
108 bottom walls
109 sloping top walls
110 open fronts
201 first mend wind passages
202 second mend wind passages
203 third mend wind passages
211 mend wind wind turbine
212 mend air valve
311 exhaust fans
312 valve for air exhausts
313 gas gathering masks
314 deflectors
315 diversion trenches
335 air draft regions
400 top modules
801 air velocity transducers
802 position sensors
803 infrared detectors
804 sliding windows
The first wind-supplying mouths of A1
The second wind-supplying mouths of A2
A3 third wind-supplying mouths
A4 mends the total mouth of wind
B1, B2 base cabinet air exhaust passage
The total mouth of B4 air drafts
Specific implementation mode
Presently in connection with attached drawing, the better embodiment of the present invention is discussed in detail.Although description of the invention will in conjunction with this compared with
Good embodiment is introduced together, but this feature for not representing the invention is only limitted to the embodiment.Implement on the contrary, combining
Mode make invention introduce purpose be in order to cover based on the present invention claim and be possible to the other selections extended or
Transformation.To include many concrete details in being described below to provide the depth understanding to the present invention.The present invention can not also
Implemented using these details.In addition, in order to avoid chaotic or obscure the emphasis of the present invention, some details will in the de-scription by
It omits.
In addition, "upper", "lower", "left", "right", "top", "bottom" used in the following description, are to be based on the ventilation
Cabinet by laboratory experimenter's use when spatial position and define, should not be construed as limiting the invention.
As shown in Figures 1 to 4, the vent cabinet of better embodiment of the invention includes cabinet 100, the inner cavity of the cabinet 100
Working chamber 102 is constituted, which has：Left and right sidewall 103, roof 104, rear wall 106, bottom wall 108 and before being formed in
Wall to the open open front of indoor environment 110.In the present embodiment, the lower section of cabinet 100 is set there are two base cabinet 105, should
Base cabinet 105 can be used for storing the reagent and material needed for experiment.
It is equipped with the distinctive top module of vent cabinet of the present invention 400 in the top of cabinet 100.400 inside installation of top module
Have：The benefit wind wind turbine 211 of power adjustable section, the aperture in the air-flow direction downstream side for mending wind wind turbine 211 are adjustable
Mend opening for air valve 212, the exhaust fan 311 of power adjustable section and the air-flow direction downstream side in exhaust fan
Spend adjustable valve for air exhaust 312.Above-mentioned benefit wind wind turbine 211 mends air valve 212 and aftermentioned each wind-supplying mouth, mend wind passage
Deng composition air-makeup system, which is connected by mending the mend wind passage of the total mouth A4 of wind and building, is mended into working chamber 102
Wind.Said exhaust wind turbine 311, valve for air exhaust 312 and aftermentioned air draft region, air exhaust passage etc. constitute exhaust system, the row
Wind system is connected by the air exhaust passage of the total mouth B4 of air draft and building, and the air of working chamber 102 will be entered by open front 110
It is discharged from working chamber 102 with the air for entering working chamber 102 by above-mentioned air-makeup system.
Fig. 4 is the air-flow guiding figure of the vent cabinet of present embodiment, and Fig. 5 is the air-makeup system of the vent cabinet of present embodiment
Air-flow be oriented to figure.As shown in Figure 4,5, the first wind-supplying mouth A1, first wind-supplying mouth A1 are equipped in the top of above-mentioned open front 110
It is designed to the semi-cylindrical shape extended along the left and right width direction of working chamber 102, semi-cylindrical is towards working chamber 102
Towards rear.On first wind-supplying mouth A1, equipped with multiple along the axially extending of semi-cylindrical and the flow deflector that circumferentially arranges
221 (illustrating in such as Fig. 5).It is equipped with the first mend wind passage 201 across cabinet or so width direction on the top of cabinet, this first
Mend wind passage 201 connects above-mentioned benefit air valve 212 and above-mentioned first wind-supplying mouth A1.First mend wind passage 201 is close to work
The one side for making chamber 102 designs for skew wall.This skew wall can be evenly distributed on the air moved in the first mend wind passage 201, and by its
Wind speed reduces.In this way, mend wind wind turbine 211 by operating, it is uniform that the first wind-supplying mouth A1 along the radial direction of semi-cylindrical will supplement air
Slowly it is sent into the working chamber 102 of vent cabinet.Although sending the air-flow to the first wind-supplying mouth A1 still to have centainly from wind wind turbine 211 is mended
The ratio (15% or less about) of turbulent flow, but the setting of flow deflector 221 can separate turbulent flow, it is ensured that it is blown into from the first wind-supplying mouth A1
The air-flow of working chamber 102 is laminar condition.
It is equipped with the second wind-supplying mouth A2 in the lower section of open front 110, second wind-supplying mouth A2 is designed to along working chamber 102
1/4 cylindrical shape that left and right width direction extends, 1/4 cylindrical surface is towards working chamber 102 i.e. towards back upper place.This second
On wind-supplying mouth A2, equipped with multiple along the axially extending of 1/4 cylindrical surface and the flow deflector 222 (illustrating in such as Fig. 5) that circumferentially arranges.
It is equipped with the second mend wind passage 202 across cabinet or so width direction in the lower part of cabinet, which will come from
The air for mending wind wind turbine 211 is conveyed to second wind-supplying mouth A2, therefore compensation current can be made to be blown along the radially uniform of 1/4 cylindrical surface
Enter working chamber.In addition, since the second wind-supplying mouth A2 is located at the workspace of vent cabinet, the flow deflector in this region has because frequently
Using and caused by consume risk.Therefore, in the present embodiment, it is externally provided in the second wind-supplying mouth A2 and surrounds second wind-supplying mouth
The protective grille (not shown) of A2 come prevent flow deflector 222 consume risk.Protective grille can also help to guide second simultaneously
The benefit general mood stream of wind-supplying mouth A2, and the gas sent out from the second wind-supplying mouth A2 is contributed to be filled into working chamber as laminar condition
102, in addition, protective grille can also play the role of preventing sundries from entering the second wind-supplying mouth A2.
It is equipped with third wind-supplying mouth A3 in the top of cabinet 100 and the front side of above-mentioned antetheca, third wind-supplying mouth A3 is designed
At 1/4 cylindrical shape that the left and right width direction along working chamber 102 extends, 1/4 cylindrical surface towards working chamber 102 be direction
The back lower place.On third wind-supplying mouth A3, equipped with multiple 1/4 along the axially extending of cylindrical surface and the flow deflector that circumferentially arranges
223 (illustrating in such as Fig. 5).Be equipped with the third mend wind passage 203 across cabinet or so width direction on the top of cabinet, this
Aftermentioned sliding window 804 can be inserted between three mend wind passages 203 and above-mentioned first mend wind passage 201, the third mend wind passage 203
Be connected to above-mentioned first mend wind passage 201 around the sliding window 804, so in the future the air of self-complementary wind wind turbine 211 to this
Three wind-supplying mouth A3 conveyings.The one side of the third mend wind passage 203 far from cabinet designs for skew wall, has both been uniformly distributed third benefit
The air moved in wind channel 203, and reduce wind speed.In the case where mending wind turbine 211 and acting on, supplement air can be along third wind-supplying mouth A3
Radially uniform slowly blow out.Third wind-supplying mouth A3 not only blows towards the working chamber 102 of cabinet 100, and towards cabinet
100 lower section air-supply, which is located just at the position of breathing of experimenter, therefore can further lower experiment people
The risk of member's sucking harmful substance.Also, the wind blown out downwards from third wind-supplying mouth A3 forms " air barrier ", plays slow
The effect with cabinet external environment air in working chamber 102 is rushed, overflow risk is effectively prevent.In the present embodiment, it is mended in the third
It also is provided with surrounding the protective grille of third wind-supplying mouth A3 outside the A3 of air port, which, which equally plays, prevents flow deflector from consuming,
Guide the effect mended general mood stream and prevent sundries from entering wind-supplying mouth.
As shown in figure 5, the left and right sidewall 103 of cabinet 100 is hollow double-layer structure, be located at cabinet top above-mentioned first is mended
Wind channel 201 is connected to the second mend wind passage 202 positioned at cabinet lower part by the hollow space 225 of left and right sidewall 103, by
This so that all mend wind passages of present embodiment communicate with each other, can be by the work(of benefit wind wind turbine 211 to the benefit air quantity of vent cabinet
Rate and the unified regulation and control of the aperture for mending air valve 212.
As shown in Figure 2,4, it is equipped with across the entire of cabinet 100 on the top of cabinet and close to the position of above-mentioned rear wall 106
The gas gathering mask 313 of left and right width direction.The upper end of the gas gathering mask 313 is connect with exhaust fan 311, and Inner Constitution is in cabinet
The air draft region 335 extended in 100 entire left and right width direction.By air draft region 335 as setting, can to avoid
The top exhaust outlet of working chamber 102 is formed about air eddy, and is the entire row including aftermentioned base cabinet air exhaust passage
The connection of wind system provides possibility.
As shown in figure 4, in the present embodiment, also having from above-mentioned first wind-supplying mouth A1 upward in above-mentioned working chamber 102
The sloping top walls 109 that air draft region 335 obliquely extends rearwardly and upwardly are stated, which forms for working chamber 102
Part surrounds, and the both sides of sloping top walls 109 and the left and right sidewall 103 of cabinet connect, and bottom end and the first wind-supplying mouth A1 upper limb connect
It connects, top and roof 104 connect.Due to the work of the high exhaust air rate of exhaust blower, the inner top of traditional vent cabinet working chamber is frequent
Air-swirl can be formed, makes toxic and harmful gas that can not be discharged, the design of sloping top walls can break the extension of vortex, cooperation
The laminar winds that first wind-supplying mouth A1 of cabinet inner top is sent out, can be such that gas in cabinet is slowly uniformly climbed to air draft region along skew wall.
Angle and the shape design of this sloping top walls 109 are to help to control and prevent in working chamber 102 nuisance in air
The overflow of matter, and reduce the possibility that the air near the air draft region 335 at top forms vortex.In addition, as described in Fig. 1,4,
In above-mentioned working chamber 102, close to the position of above-mentioned rear wall 106, it is also equipped with deflector 314, the upper end of the deflector 314
Portion extends towards said exhaust region 335, is equipped with multiple through holes in the lower part of the deflector 314, multiple through hole is being led
It is distributed in the entire left and right width direction of flowing plate 314, there are diversion trenches 315 between deflector 314 and above-mentioned bottom wall 108.It is logical
Air-stable in working chamber 102 can be oriented to top air draft region by the setting for crossing the deflector 314 with through hole
335 and avoid the generation of air-swirl, and the continuous air draft that the wide face that can carry out entire working chamber 102 is almost the same.
Arrow in Fig. 4 show air enter, by with discharge vent cabinet cabinet when the type of flow.Mending wind
Under the action of wind turbine 211 and benefit air valve 212, the air-makeup system that general mood stream enters vent cabinet from total wind-supplying mouth A4 is mended, is flowed to
Each wind-supplying mouth A1, A2 and A3, and then working chamber 102 uniformly is slowly entered, meanwhile, a part of surrounding air also can be with perpendicular to preceding
The angle of opening 110 enters working chamber 102 from open front 110.After these air enter working chamber 102, as shown by arrows, substantially
On can uniformly be pulled to and by the air draft region 335 at top, deflector 314 and diversion trench 315, then at the top of cabinet
Total exhaust outlet B4 is discharged with arrow direction.Those skilled in the art can will be apparent that：The change of air flow area can cause air
The fluctuation of flowing velocity.Therefore, from the air that open front 110 enters when entering the big region of working chamber 102, wind speed can be
It reduces；When these air continue near the air draft region 335 at top, wind speed can increase.The fluctuation of this wind speed helps
System is pushed and pulled in maintaining a benefit wind that is consistent, stablizing and air draft.This push-pull system can be by the air in cabinet with same
The mode of step displacement moves, and the turbulent flow risk of air in required benefit air quantity and cabinet can be largely lowered in this way.In addition, this implementation
The setting of push-pull system that mode uses and sloping top walls 109 can be the risk of the formation of air sinuous flow and vortex in cabinet most
Smallization, above working chamber 102 and the air tissue of open front 110.Therefore, thus caused by push-pull system
Displacement air moves system can more effectively possibility of the harmful substance from open front overflow in air in switch board.
Fig. 6 is the air-flow guiding figure of the exhaust system of the vent cabinet of present embodiment.For two base cabinets of vent cabinet are discharged
The toxic and harmful gas generated in 105 due to placing working reagent or material, as shown in Figure 2,6, the ventilation of present embodiment
The rear portion of two base cabinets 105 of cabinet is respectively arranged with base cabinet air exhaust passage B1 and B2.Base cabinet air exhaust passage B1 and B2 are respectively provided at
It in the hollow space of corresponding left and right sidewall 103, and is vertically extended close to 106 ground of above-mentioned rear wall, by corresponding base cabinet 105
Inner cavity and the air draft region 335 in the gas gathering mask 313 at the top of above-mentioned cabinet corresponding side be connected to.In this way, in exhaust fan
Under the action of 311, the gas in base cabinet 105 can be drawn into base cabinet air exhaust passage B1 and B2, and in air draft region 335 and working chamber
The air-flow mixing for being pulled or pushed to air draft region 335 in 102, is discharged to the air exhaust passage of building from total exhaust outlet B4 together
In.It can be seen that similar air-makeup system, each air exhaust passage of vent cabinet of the present invention is also associated with each other, then total exhaust air rate can be by
The aperture control of the power and valve for air exhaust 312 of exhaust fan 311.
Further, the vent cabinet of present embodiment can coordinate control system to be used as air-volume-variable fume hood, before
The inlet of the air of opening can flexibly be changed in very large range by sliding the change of window position.Specifically, such as
Fig. 3, shown in 4, in the present embodiment, vent cabinet is additionally provided with：Sliding window 804, the sliding window 804 can be along above-mentioned open fronts 110
Sliding, the open area for adjusting the open front 110；Position sensor 802, the position sensor 802 are located at above-mentioned top
In module 400, the position for detecting above-mentioned sliding window 804；Air velocity transducer 801, the air velocity transducer 801 is before above-mentioned
It is open on the inner surface of a side that 110 ground are arranged in above-mentioned left and right sidewall 103, enters for detecting from above-mentioned open front 110
The speed (hereinafter referred to as face wind speed) of the air of above-mentioned working chamber 102；Infrared detector 803, the infrared detector 803 setting
In the antetheca of above-mentioned top module 400, whether setting regions is in for test experience personnel；And control unit (is not schemed
Show), which is located in above-mentioned top module 400, with above-mentioned position sensor 802, air velocity transducer 801, infrared spy
It surveys device 803, above-mentioned benefit wind wind turbine 211 and mends air valve 212 and exhaust fan 311 and the connection of valve for air exhaust 312, and base
In above-mentioned position sensor 802, air velocity transducer 801 and infrared detector 803 detection information to above-mentioned benefit wind wind turbine 211
It is adjusted with benefit air valve 212 and the respective power and aperture of exhaust fan 311 and valve for air exhaust 312.
Above-mentioned infrared detector 803 can perceive experimenter whether in the working region of setting, if detecting nobody
Sliding window 804 in workspace and vent cabinet is not off, then control unit can give the driving of sliding window 804 to fill
Transmission signal (not shown) is set, sliding window 804 is closed, reduces the air for entering working chamber from indoor environment, reduces laboratory energy
Consumption；In addition, after sliding window 804 is closed, the air quantity that enters of vent cabinet is only provided by each wind-supplying mouth A1~A3, the exhaust air rate of vent cabinet
It reduces simultaneously, therefore the system energy consumption of vent cabinet also decreases.
On the other hand, when the aperture of sliding window 804 changes, above-mentioned control unit receives the hair of position sensor 802
The sliding window opening value sent, it is the required vent cabinet exhaust air rate of preset value to calculate maintenance face wind speed according to following formula：
Q=V*S*3600 (1)
Q is the exhaust air rate of the working chamber 102 of vent cabinet, unit m3/h；V is the preset value of face wind speed, unit m/s；S
For the area of ventilation-sectional area, that is, open front 110 of sliding window 804, unit m2, wherein
S=L*H (2)
L is the width (sliding window 804 is when moving up and down) of sliding window 804 or highly (sliding window 804 is to move left and right
When) it is fixed value；And the opening value that H is the sliding window 804 that above-mentioned position sensor 802 detects.
Then, control unit is according to the exhaust air rate of the working chamber 102 for the vent cabinet being calculated, and combines and preset face wind speed
The air draft numerical quantity of base cabinet the air exhaust passage B1 and B2 of lower base cabinet 105 adjust the power and valve for air exhaust 312 of exhaust fan 311
Aperture, to change the exhaust air rate of entire vent cabinet.It can also adjust according to above-mentioned each detected value and calculated value and mend wind wind turbine
211 power and the aperture for mending air valve 212, to change the benefit air quantity of air-makeup system.
When multiple vent cabinets are connected in parallel in ventilation system for buildings, service condition institute of each vent cabinet according to itself
The benefit exhaust air rate needed can also be not quite similar.In parallel air flow system, system of distance total output wind turbine is closer, can supplement or arrange
The throughput gone out is bigger；System of distance total output wind turbine is remoter, and due to pressure drop and loss, the throughput that can be supplemented or be discharged is got over
It is small.If therefore valveless control, each vent cabinet only leans on total output wind turbine that can not realize the individual character tune depending on service condition
Section.To realize above-mentioned target, now novel environment friendly air-volume-variable fume hood majority in the market is equipped with expensive venturi valve.
In the present embodiment, it as noted previously, as vent cabinet itself is integrated with top module 400, and is installed in the top module 400
The exhaust fan 311 and valve for air exhaust 312 of power and aperture can be adjusted according to actual conditions and mend wind wind turbine 211 and mend by having
Air valve 212, and the power and aperture of above-mentioned wind turbine and valve are adjusted by automatic control system, therefore can reach
Effect identical with venturi valve, and features simple structure, save space, and greatly reduce vent cabinet installation cost and repair at
This.
More than, the better embodiment of the present invention is illustrated, however, the present invention is not limited thereto, without departing from the spirit
In the range of, various modifications can be carried out to implement.
For example, in the above-described embodiment, portion is set there are two wind-supplying mouth on the cabinet, sets that there are one mend wind in cabinet lower part
Mouthful, portion and set that there are one air draft regions, but the setting position of wind-supplying mouth and air draft region close to the position of cabinet rear wall on the cabinet
Set it is without being limited thereto with quantity, as long as plug-type air flow can be formed in working chamber.
Also, in the above-described embodiment, it is respectively adjustable power type wind turbine to mend wind wind turbine and exhaust fan, mend air valve and
Valve for air exhaust is respectively aperture type variable valve, and but the invention is not restricted to this, as long as by at least one party in wind turbine and valve
It is arranged to adjustable.In addition, in the case where being not required to adjust air quantity, as long as according to vent cabinet system of distance total output wind turbine
Distance is arranged the constant power of wind turbine and the fixation aperture of valve.
Also, in the above-described embodiment, mends air valve and valve for air exhaust is separately positioned on and mends wind wind turbine and exhaust fan
The downstream side of air-flow direction, but the invention is not restricted to this, and benefit wind can be also separately positioned on by mending air valve and valve for air exhaust
The upstream side of the air-flow direction of wind turbine and exhaust fan.
Also, in the above-described embodiment, the inlet of the air at open front equipped with sliding window to adjust vent cabinet, but
It is that the invention is not limited thereto, in the case where air inlet need not be adjusted, sliding window can not also be set to reduce cost.
Also, in the above-described embodiment, set below cabinet there are two base cabinet be used to store the required reagent of experiment and
Material, but the invention is not restricted to this, and the quantity of base cabinet can be appropriately arranged with as needed, or be not provided with base cabinet.In addition, bottom
As long as the quantity of cabinet air exhaust passage and position correspond to the quantity of base cabinet and location-appropriate setting both may be used.
Also, in the above-described embodiment, the inner surface in side wall is arranged in the air velocity transducer for measuring surface wind speed, but
The invention is not limited thereto, and air velocity transducer can also be arranged on the inner wall of the working chambers such as bottom wall or roof, as long as can detect
Face wind speed will not interfere experimental implementation again.
Also, in the above-described embodiment, vent cabinet is the vent cabinet of use for laboratory, but in addition to this, ventilation of the invention
Cabinet is applicable to any required work that harmful substance in air is controlled and is discharged, for example, in semicon industry it is required
Wet etching cleaning system etc..
Claims (12)
1. a kind of vent cabinet, including：The inner cavity of cabinet, the cabinet constitutes working chamber, and antetheca forms oriented indoor environment and opens wide
Open front；The mend wind passage of air-makeup system, the air-makeup system and building connects, and wind is mended to the working chamber；And air draft
The air exhaust passage of system, the exhaust system and building connects, will enter by the open front working chamber air and
The air for entering the working chamber by the air-makeup system is discharged from the working chamber, which is characterized in that
The air-makeup system respectively has at least one wind-supplying mouth in the upper and lower part of the cabinet, and the wind-supplying mouth is towards the work
Make intracavitary air-supply.
2. vent cabinet as described in claim 1, which is characterized in that
The left and right sidewall of the cabinet is hollow double-layer structure, is located at the mend wind passage on cabinet top and is located at cabinet lower part
The mend wind passage be connected to by the hollow space of the left and right sidewall.
3. vent cabinet as claimed in claim 2, which is characterized in that
The exhaust system has air draft region, the air draft on the top of the cabinet and close to the position of the rear wall of the cabinet
Region extends in the entire left and right width direction of the cabinet.
4. vent cabinet as claimed in claim 3, which is characterized in that
Each wind-supplying mouth extends respectively along the left and right width direction of the working chamber,
Multiple wind-supplying mouths include：
The first wind-supplying mouth positioned at the top of the open front；
The second wind-supplying mouth positioned at the lower section of the open front；And
Third wind-supplying mouth positioned at the top of the cabinet and the outside of the antetheca, the third wind-supplying mouth is towards the working chamber
It blows the lower section of the interior and described cabinet.
5. vent cabinet as claimed in claim 4, which is characterized in that
The working chamber has the sloping top walls obliquely extended rearwardly and upwardly from first wind-supplying mouth towards the air draft region.
6. vent cabinet as claimed in claim 3, which is characterized in that
Deflector, the deflector close to the rear wall upright setting are equipped in the working chamber, and upper end is described in
Air draft region extends,
Multiple through holes are equipped in the lower part of the deflector, multiple through hole is in the entire left and right width side of the deflector
Distribution upwards.
7. vent cabinet as claimed in claim 3, which is characterized in that
It is equipped at least one base cabinet in the lower section of the cabinet, the inner cavity of the base cabinet passes through base cabinet air exhaust passage and the exhaust zone
Domain is connected to, which is located in the hollow space of at least one of described left and right sidewall, close to the rear wall and
It vertically extends.
8. vent cabinet as claimed in claim 4, which is characterized in that
It is respectively equipped with flow deflector on each wind-supplying mouth.
9. vent cabinet as claimed in claim 4, which is characterized in that
Second wind-supplying mouth is externally provided with the protective grille for surrounding second wind-supplying mouth,
The third wind-supplying mouth is externally provided with the protective grille for surrounding the third wind-supplying mouth.
10. vent cabinet according to claim 3, which is characterized in that be equipped with top module, the top above the cabinet
The valve for air exhaust for mending air valve and the exhaust system of the air-makeup system is installed in module；
Each mend wind passage for mending air valve and each wind-supplying mouth is connected to communicate with each other；
The air draft region of the exhaust system is connect with the valve for air exhaust.
11. vent cabinet according to claim 10, which is characterized in that the benefit air valve is connected to wind wind turbine is mended, described
Valve for air exhaust is connected to exhaust fan.
12. vent cabinet according to claim 11, which is characterized in that the benefit wind wind turbine and the exhaust fan are mounted on
In the top module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810444895.6A CN108435747A (en) | 2015-04-10 | 2015-04-10 | Vent cabinet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810444895.6A CN108435747A (en) | 2015-04-10 | 2015-04-10 | Vent cabinet |
| CN201510169620.2A CN106140769B (en) | 2015-04-10 | 2015-04-10 | Ventilation cabinet |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510169620.2A Division CN106140769B (en) | 2015-04-10 | 2015-04-10 | Ventilation cabinet |
Publications (1)
| Publication Number | Publication Date |
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| CN108435747A true CN108435747A (en) | 2018-08-24 |
Family
ID=57336593
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510169620.2A Active CN106140769B (en) | 2015-04-10 | 2015-04-10 | Ventilation cabinet |
| CN201810444895.6A Pending CN108435747A (en) | 2015-04-10 | 2015-04-10 | Vent cabinet |
| CN201910073733.0A Pending CN109530382A (en) | 2015-04-10 | 2015-04-10 | Vent cabinet |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510169620.2A Active CN106140769B (en) | 2015-04-10 | 2015-04-10 | Ventilation cabinet |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910073733.0A Pending CN109530382A (en) | 2015-04-10 | 2015-04-10 | Vent cabinet |
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| CN (3) | CN106140769B (en) |
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| CN113578910A (en) * | 2021-08-30 | 2021-11-02 | 青岛中科汉维实验室装备科技有限公司 | Low-energy-consumption air supplementing type laboratory ventilation cabinet |
| CN115007590A (en) * | 2022-06-17 | 2022-09-06 | 倚世节能科技（上海）有限公司 | Ventilation cabinet |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109530382A (en) | 2019-03-29 |
| CN106140769B (en) | 2021-05-18 |
| CN106140769A (en) | 2016-11-23 |
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