CN205463540U - Fume cupboard - Google Patents
Fume cupboard Download PDFInfo
- Publication number
- CN205463540U CN205463540U CN201620201201.2U CN201620201201U CN205463540U CN 205463540 U CN205463540 U CN 205463540U CN 201620201201 U CN201620201201 U CN 201620201201U CN 205463540 U CN205463540 U CN 205463540U
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- fume hood
- wall
- workbench
- cupboard
- workstation
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Abstract
The utility model discloses a fume cupboard, including cupboard wall, workstation and guiding device, the cupboard wall comprises lateral wall, back wall and upper wall, the cupboard wall surrounds the upper portion space of workstation, and with the workstation forms the open workspace of front end jointly, just the width of lateral wall is greater than the workstation is in the length of y axle direction, the guiding device includes rectangle guide plate, support and rotation axis, the support includes two front side supports and two rear side supports, its set up respectively in the bottom in rectangle guide plate four corners, the lower extreme of two front side supports is fixed in through two rotation axises respectively the workstation front end on the lateral wall internal surface, the rectangle guide plate is greater than at the width of y axle direction the rotation axis with front end projected perpendicular distance on the horizontal plane of workstation. The utility model discloses a front end in the workspace sets up the rectangle guide plate to improve fume cupboard's ventilation performance, increased the factor of safety in the experimentation simultaneously.
Description
Technical field
This utility model relates to a kind of fume hood.
Background technology
In experimentation, volatile poisonous and harmful substance can be related to unavoidably, so typically requiring
Experimental procedure is carried out in fume hood.At present, common fume hood only has preferably near air inlet
Ventilation effect, and less at the center of working area and the air-flow at rear wall, can not reach preferable
Fume hood effect, when poisonous escaping gas discharges fume hood the most rapidly, experimentation is just
There is bigger potential safety hazard.If it addition, relate to electric driver in Shi Yan, common fume hood
Deep bead when moving lowest part to, be easily pressed onto power line, cause potential potential safety hazard.
Utility model content
For disadvantages described above or the Improvement requirement of prior art, this utility model provides a kind of fume hood,
The front end that its object is to working area arranges a turnover rectangular guiding plate, thus improves fume hood
Performance of ventilating.
For achieving the above object, according to an aspect of the present utility model, including cupboard wall, workbench with
And guiding device；Described cupboard wall is made up of sidewall, rear wall and upper wall, and described cupboard wall surrounds described work
The upper space of platform, and it is collectively forming the working area that front end is opened wide, and described sidewall with described workbench
Width more than the described workbench length in y-axis direction；Described guiding device include rectangular guiding plate,
Support and rotary shaft, described support includes two front side frame and two rear side supports, and it is respectively
Being arranged at the bottom of described rectangular guiding plate corner, the lower end of said two front side frame is respectively by two
Individual rotary shaft is fixed in the described side wall inner surfaces of described workbench front end, and described rectangular guiding plate is at y
Axial width is vertical with what the front end of described workbench projected in the horizontal plane more than described rotary shaft
Distance.
Preferably, also include that portable deep bead, described portable deep bead are arranged at described working area
Front end, for described working area is turned on and off.
As it is further preferred that the lower end of described portable deep bead and/or described rectangular guiding plate
Upper surface is additionally provided with elastomeric support column, at described portable deep bead and described rectangular guiding
Cushioning effect is played between plate.
As further preferred, the height of described elastomeric support column is 5mm～15mm.
As further preferred, the material of described elastomeric support column is rubber.
Preferably, the material of described guiding device is rustless steel or aluminium alloy.
Preferably, the described rectangular guiding plate width in y-axis direction is 9cm～12cm.
Preferably, the height of described support is 2cm～5cm.
In general, by the contemplated above technical scheme of this utility model compared with prior art,
Rectangular guiding plate it is provided with, it is possible to obtain following beneficial effect below front end, working area:
1, in experimentation, rectangular guiding plate is parallel with workbench, is now reduced by movable type deep bead
Above deflector and open blower fan, due to the restriction of rectangular guiding plate, gas is completely from horizontal direction
Enter working area；And common ventilation cupboard has a component velocity in vertical direction, cause horizontal component velocity
Reduce；Therefore this utility model is bigger in the air velocity of working area horizontal direction, can be in level side
Move upward farther distance, so there being bigger air velocity near whole workbench, ventilates
Effect is better than common ventilation cupboard；
2, it is arranged at the lower section of portable barge board due to rectangular guiding plate, prevents portable deep bead
It is down to directly over workbench, and cable in experimentation, pipeline etc. can be by under rectangular guiding plates
Side and fume hood external connection, the deep bead thoroughly solving common ventilation cupboard is down to due to maloperation
Time minimum, collide with cable, pipeline thus damage experimental facilities；
3, between rectangular guiding plate and portable deep bead, it is provided with elastomeric support column, it is to avoid both
Between direct collision, and the damage that fume hood is caused；
4, rectangular guiding plate is fixed by rotary shaft, such that it is able to the most outwards upset, in switching process
In, the void enlargement between rectangular guiding plate and workbench, can be convenient in the Preparatory work of experiment stage
Connection cable, the equipment such as pipeline；
5, rectangular guiding plate is avoided that the reagent splashed down in workbench front end is to experiment institute to a certain extent
With the impact of the equipment such as cable, add the safety coefficient of experiment.
Accompanying drawing explanation
Fig. 1 is this utility model embodiment 1 structural representation；
Fig. 2 a is this utility model embodiment 1 guiding device structure front view；
Fig. 2 b is this utility model embodiment 1 guiding device structure left view；
Fig. 2 c is this utility model embodiment 1 guiding device structure top view；
Fig. 2 d is the perspective view that this utility model embodiment 1 guiding device is observed from lower right；
Fig. 3 a is that COMSOL software CFD simulation common ventilation cupboard is at the vertical section of exhaust outlet center
Air-flow patterns；
It is perpendicular at exhaust outlet center that Fig. 3 b is that COMSOL software CFD simulates this utility model embodiment 1
The air-flow patterns of section；
Fig. 4 is that COMSOL software CFD simulates this utility model embodiment 1 and common ventilation cupboard table
Above face, 12cm goes out air velocity size distribution comparison diagram.
In all of the figs, identical reference is used for representing identical element or structure, wherein:
1-exhaust outlet, 21-deep bead glass, 22-deep bead handle, 31-upper wall, 32-sidewall, 4-water conservancy diversion fills
Putting, 41-deflector, 42-rotary shaft, 43-front-end bracket, 44-rear end support, 5-article cabinet, 6-props up
Dagger, 7-rotary shaft, 8-air inlet.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with
Drawings and Examples, are further elaborated to this utility model.Should be appreciated that this place is retouched
The specific embodiment stated, only in order to explain this utility model, is not used to limit this utility model.This
Outward, if technical characteristic involved in each embodiment of this utility model disclosed below that
The conflict of not constituting between this just can be mutually combined.
This utility model provides a kind of fume hood, including cupboard wall, workbench and guiding device；Institute
Stating bookcase body to be made up of sidewall, rear wall and upper wall, described cupboard wall surrounds the upper space of described workbench,
And be collectively forming, with described workbench, the working area that front end is opened wide, and the width of described sidewall is more than described
Workbench is in the length in y-axis direction；The front side of workbench is provided with portable deep bead, for by institute
State working area to be turned on and off；When the height of workbench is generally located on people's sitting posture about the height of chest,
To facilitate staff to operate, the lower section of workbench is typically provided with support or article cabinet；
The material of described guiding device is rustless steel or aluminium alloy, including rectangular guiding plate, support and
Rotary shaft, the height of described support is 2cm～5cm, including two front side frame and two rear sides
Support, two front side frame and two rear side supports are respectively arranged at the corner of described rectangular guiding plate；
Wherein, described workbench front end is fixed on by two rotary shafts respectively in the lower end of two front side frame
In described side wall inner surfaces, the described rectangular guiding plate width in x-axis direction is roughly the same with workbench,
Width in y-axis direction is 9cm～12cm and the front end more than described rotary shaft with described workbench
The vertical dimension projected in the horizontal plane, thus when described rectangular guiding plate rotates to and described workbench
Time parallel, the rear end of rectangular guiding plate is positioned at described working area, and front end is positioned at outside described working area；
In addition, it is also possible to multiple support is set in other position on rectangular guiding plate four limit, to increase square
The stability of shape deflector.
It is additionally provided with height in the described portable lower end of deep bead and/or the upper surface of described rectangular guiding plate
Degree is made up of rubber elastomeric material for the elastomeric support column of 5mm～20mm, this elastomeric support column,
Can be one or more, uniformly at x-axis directional spreding, at described portable deep bead and
Cushioning effect is played between described rectangular guiding plate.
In the Preparatory work of experiment stage, rectangular guiding plate can be overturn outside axial rotary 70 °～100 °, turn over
During Zhuaning, the space between rectangular guiding plate and workbench can become larger, and facilitates experimental implementation person couple
The equipment such as external electrical cable, pipeline are attached.Deflector level is kept in experimentation,
Conveniently carry out experimental implementation.
Embodiment 1
Fume hood that the present embodiment provides as it is shown in figure 1, the bookcase body internal specifications of fume hood be wide × deeply ×
Height=1.50m × 0.65m × 1.10m, is made up of sidewall 32, rear wall, upper wall 31 and workbench, cupboard wall
Thickness 10cm, and surround the upper space of described workbench, form the working area that front end is opened wide, sidewall
The width ratio workbench big 8.3cm of length in y-axis direction, therefore sidewall front end than workbench at water
Square upwards beyond 8.3cm.A pair double door that vertical height is 0.85m it is provided with below workbench
Article cabinet 5, for place experiment article.
The guiding device 4 of rustless steel material is propped up by the deflector 41 of rectangle, front-end bracket 43, rear end
Frame 44 and rotary shaft 45 form, as shown in Figure 2.A length of 1.50m of deflector 41, a width of 10
Cm, thickness is 0.5cm.The height of two front-end brackets 43 and four rear end support 44 is 3cm,
Two front-end brackets are arranged at two jiaos of bottoms of deflector 41 front end, and front-end bracket 43 passes through level
The rotary shaft 42 that direction is arranged is fixed on the inner surface of the sidewall 32 at the about 2cm of workbench front end；
Four rear end support are then respectively arranged at two jiaos of bottoms of deflector 41 rear end, and rear end is 1/3 flat
The bottom of separated time.The deep bead of up-down stretch type, by the deep bead glass 21 of thickness about 5mm, keeps out the wind
Lower end outside glass sheet 21 is provided with handle 22, facilitates operator to be moved up and down.Work as water conservancy diversion
When plate 41 and workbench be arranged in parallel, the projection on deflector 41 of the positive lower end of deep bead glass 21
Just the top and the bottom of deflector are divided equally.Four uniformly it are fixed with in the positive lower end of deep bead glass 21
Upper diameter 2.2cm, lower diameter 1.7cm, height is that the elasticity of the rounding bench-type quality of rubber materials of 1cm is propped up
Dagger 6, for playing cushioning effect, it is to avoid device damage between deep bead and deflector 41.Wind
Seat in the plane is put and is arranged at the exhaust outlet 1 of upper wall 31, and air-flow wind direction is vertically outside, air draft air quantity > 2000
m3/ h, exhaust outlet specification is Φ=0.3m.
In experimentation, first horizontally disposed deflector is overturn outside axial rotary 70 °～100 °,
External power cord is connected, by the experimental provision on workbench, glass drying oven, medicine below deflector
Etc. being ready to；Then deflector is flipped back to horizontal direction, leave behind deep bead to above workbench about
At 10cm～20cm, this height can either Protection operator safety, be also convenient for both hands simultaneously and enter
Enter the height of fume hood cupboard in-vivo procedures；Required experimental provision is matched, power-on, beat
Open extractor fan, test；Now, volatility toxic and harmful can be in desktop any position
More effectively discharge fume hood.If follow-up experimentation need not artificially after experimental provision has been built
Hands-on, can move deep bead its bottom to and contact with deflector.
For the beneficial effect being better understood from the present embodiment, utilize the fluid in COMSOL software
Simulation column, is aerated simulation according to the identical parameters with the present embodiment, simultaneously with common ventilation cupboard
Ventilation effect compare, in addition to guiding device, the bookcase body specification of common ventilation cupboard, deep bead position
Put, other conditions such as fan speed all identical with embodiment 1.In simulation, deep bead position is in
Minimum state (i.e. deep bead contact deflector position), arranging exhaust outlet speed is 8m/s, and speed is vowed
Amount ratio is 0.275.After what Fig. 3 a, b expressed respectively is on blower fan, common ventilation cupboard and this reality
The air velocity of exhaust outlet center vertical section in example 1, including velocity magnitude and direction, can from Fig. 3
To find out that the present embodiment improves to some extent compared with the obvious ventilation effect of common ventilation cupboard.Consider that major part is real usually
In testing, height (may be placed on some instrument and the test) meeting of the containers such as beaker is at desktop
On the 12cm of top, therefore acquire common ventilation cupboard and this example 1 distance table on this cross section respectively
The position and speed size of face 12cm, as shown in Figure 4, in figure, x-axis represents its VELOCITY DISTRIBUTION schematic diagram
On cross section, height is the horizontal range at 12cm away from air inlet, and y-axis represents VELOCITY DISTRIBUTION, i.e. this spot speed
Degree size/exhaust outlet velocity magnitude.Horizontal direction from Fig. 3 and Fig. 4 it can be seen that under two schemes
The upper local wind speed nearer apart from air inlet is the biggest, and exhaust effect is good；And distance air inlet is remotely,
Common ventilation cupboard does not then reach air draft requirement, and embodiment 1 scheme but has good ventilation effect, it was demonstrated that
Embodiment 1 using effect being provided with guiding device is better than general fume hood.
As it will be easily appreciated by one skilled in the art that and the foregoing is only preferred embodiment of the present utility model
, not in order to limit this utility model, all made within spirit of the present utility model and principle
Any amendment, equivalent and improvement etc., within should be included in protection domain of the present utility model.
Claims (8)
1. a fume hood, it is characterised in that include cupboard wall, workbench and guiding device；Described
Cupboard wall is made up of sidewall, rear wall and upper wall, and described cupboard wall surrounds the upper space of described workbench, and
It is collectively forming, with described workbench, the working area that front end is opened wide, and the width of described sidewall is more than described work
Station is in the length in y-axis direction；Described guiding device includes rectangular guiding plate, support and rotary shaft,
Described support includes two front side frame and two rear side supports, and it is respectively arranged at described rectangle and leads
The bottom of stream plate corner, institute is fixed on by two rotary shafts respectively in the lower end of said two front side frame
Stating in the described side wall inner surfaces of workbench front end, the described rectangular guiding plate width in y-axis direction is big
In the vertical dimension that the front end of described rotary shaft Yu described workbench projects in the horizontal plane.
2. fume hood as claimed in claim 1, it is characterised in that also include being arranged at described work
The portable deep bead of front end, district.
3. fume hood as claimed in claim 2, it is characterised in that under described portable deep bead
The upper surface of end and/or described rectangular guiding plate is provided with elastomeric support column.
4. fume hood as claimed in claim 3, it is characterised in that the height of described elastomeric support column
For 5mm～15mm.
5. fume hood as claimed in claim 3, it is characterised in that the material of described elastomeric support column
For rubber.
6. fume hood as claimed in claim 1, it is characterised in that the material of described guiding device is
Rustless steel or aluminium alloy.
7. fume hood as claimed in claim 1, it is characterised in that described rectangular guiding plate is in y-axis
The width in direction is 9cm～12cm.
8. fume hood as claimed in claim 1, it is characterised in that the height of described support be 2cm～
5cm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620201201.2U CN205463540U (en) | 2016-03-16 | 2016-03-16 | Fume cupboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620201201.2U CN205463540U (en) | 2016-03-16 | 2016-03-16 | Fume cupboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205463540U true CN205463540U (en) | 2016-08-17 |
Family
ID=56653396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620201201.2U Active CN205463540U (en) | 2016-03-16 | 2016-03-16 | Fume cupboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205463540U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109719108A (en) * | 2017-10-31 | 2019-05-07 | 重庆劲旗科技股份有限公司 | A kind of novel ventilated toxin-expelling cabinet |
-
2016
- 2016-03-16 CN CN201620201201.2U patent/CN205463540U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109719108A (en) * | 2017-10-31 | 2019-05-07 | 重庆劲旗科技股份有限公司 | A kind of novel ventilated toxin-expelling cabinet |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |