CN216631983U

CN216631983U - Ventilation cabinet is with air ducting of airing exhaust

Info

Publication number: CN216631983U
Application number: CN202123409237.XU
Authority: CN
Inventors: 徐福然
Original assignee: Jiangsu Silmei Experimental Equipment Technology Co ltd
Current assignee: Jiangsu Silmei Experimental Equipment Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-31
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses an exhaust air guide device for a fume hood, which comprises a fume hood body and a guide plate arranged in an inner cavity of the fume hood body, wherein a ventilation cavity is formed between the guide plate and a back plate of the fume hood body, and at least one group of guide openings are formed in the guide plate and communicated with the ventilation cavity; the flow guide opening comprises a plurality of vertical flow guide grooves which are arranged at intervals in the transverse direction, and the length direction of each vertical flow guide groove is vertically arranged; the ventilation cavity is divided into a plurality of air guide channels through a plurality of vertical guide grooves. The air flow flowing in the area corresponding to the vertical guide grooves forms negative pressure, so that the air in the area between every two adjacent vertical guide grooves flows towards the negative pressure area, the air flowing speed is increased, and the air discharge efficiency is improved.

Description

Ventilation cabinet is with air ducting of airing exhaust

Technical Field

The utility model belongs to the field of experimental equipment, and particularly relates to an air exhaust and guide device for a fume hood.

Background

In a research place such as a hospital, a school, various research institutes and the like, experimental research is frequently required, air pollution in a laboratory is often caused due to the use of various chemical substances in the laboratory, and some substances are bad in taste and harmful to health, so that the experimental research is required to be carried out by adopting a fume hood. Ordinary fume chamber main part is a box, and the fume chamber body generally includes front panel, backplate, bottom plate and roof, and it has the air exit to open on the roof, still includes the guide plate that the interval set up in the backplate to be used for forming the ventilation chamber, arrange the experimental facilities in the box of fume chamber during the use, thereby can discharge harmful gas. In the prior art, the upward exhaust speed of the gas in the fume hood is low, and the ventilation efficiency is low.

Disclosure of Invention

The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides the air exhaust and guide device for the fume hood, which is simple in structure and capable of improving the air exhaust speed and efficiency.

The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the utility model is as follows:

an exhaust air guide device for a fume hood comprises a fume hood body and a guide plate arranged in an inner cavity of the fume hood body, wherein a ventilation cavity is formed between the guide plate and a back plate of the fume hood body, and at least one group of guide openings are formed in the guide plate and communicated with the ventilation cavity; the flow guide opening comprises a plurality of vertical flow guide grooves which are arranged at intervals in the transverse direction, and the length direction of each vertical flow guide groove is vertically arranged; the ventilation cavity is divided into a plurality of air guide channels through a plurality of vertical guide grooves.

Furthermore, the diversion port further comprises a transverse diversion trench, at least one transverse diversion trench is arranged in the transverse direction, the length direction of each transverse diversion trench is transversely arranged, and each transverse diversion trench is arranged between every two adjacent vertical diversion trenches.

Furthermore, a plurality of transverse diversion trenches are sequentially arranged between every two adjacent vertical diversion trenches from top to bottom at intervals.

Furthermore, a plurality of the transverse diversion grooves are respectively arranged corresponding to the top, the middle and the bottom of the vertical diversion groove, and the plurality of the transverse diversion grooves and the two vertical diversion grooves form a structure in a shape like a Chinese character 'ri'.

Furthermore, the vertical diversion trenches comprise an upper diversion trench positioned at the upper part and a lower diversion trench positioned at the lower part, the upper diversion trench and the lower diversion trench are arranged at an isolated interval, and the transverse diversion trench positioned in the middle area of the vertical diversion trench is correspondingly arranged between the upper diversion trench and the lower diversion trench; the upper diversion trench, the lower diversion trench and the three groups of transverse diversion trenches form a structure in a shape of a Chinese character 'ri'.

Further, the guide plate includes the vertical guide plate that corresponds to the backplate and the slant guide plate that corresponds to roof in the fume chamber body, vertical guide plate is parallel and the interval sets up in the backplate, the one end of slant guide plate corresponds to the top setting of vertical guide plate, and the other end deviates from in the backplate and sets up on the roof towards the oblique top.

Furthermore, the inclined guide plate and the vertical guide plate are arranged in a clearance mode to form a ventilation clearance.

Has the advantages that: according to the utility model, the ventilation cavity is formed between the guide plate and the back plate for discharging gas, the ventilation cavity can be divided into a plurality of wind guide channels through the plurality of groups of vertical guide grooves, when the gas flows out from the vertical guide grooves respectively, the gas forms vertical gas flow at the positions of the vertically extended notches, negative pressure is formed by the gas flow flowing in the areas corresponding to the vertical guide grooves, and the gas in the areas between every two adjacent vertical guide grooves flows towards the negative pressure area, so that the gas flowing speed is accelerated, and the gas discharging efficiency is improved.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is an assembled view of the overall structure of the present invention;

fig. 3 is a schematic view of the assembly of the baffle and the back plate of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, an air exhaust and guide device for a fume hood comprises a fume hood body and a guide plate 3 arranged in an inner cavity of the fume hood body, wherein a ventilation cavity 2 is formed between the guide plate 3 and a back plate 1 of the fume hood body, at least one group of guide openings are formed in the guide plate 3 and communicated with the ventilation cavity 2, and the embodiment comprises two adjacent groups of guide openings; the flow guide opening comprises a plurality of vertical flow guide grooves 4 which are arranged at intervals in the transverse direction, and the length direction of each vertical flow guide groove 4 is vertically arranged; the ventilation cavity 2 is divided into a plurality of air guide channels through a plurality of vertical guide grooves 4. Can cut apart into a plurality of wind-guiding passageway with the chamber of ventilating through a plurality of vertical guiding gutter of group, when gas vertical guiding gutter outflow respectively, the notch department that gas was seted up in vertical extension forms vertical air current, and the regional air current that flows corresponding to vertical guiding gutter place forms the negative pressure, can make regional gas between two liang of adjacent vertical guiding gutters flow towards the negative pressure zone to accelerate gas flow speed promotes gas discharge efficiency.

The flow guide port further comprises a transverse flow guide groove 5, at least one transverse flow guide groove 5 is arranged in the transverse direction, the length direction of each transverse flow guide groove 5 is horizontally and transversely arranged, each transverse flow guide groove 5 is arranged between every two adjacent vertical flow guide grooves 4, and the transverse flow guide grooves 5 can form the flow guide port and a negative pressure area in the vertical direction, so that the flow velocity of air flow is promoted. Two liang of adjacent vertical guiding gutters 4 from last to down interval in proper order is provided with a plurality of horizontal guiding gutter 5, can evenly cut apart the chamber that ventilates, has increased the wind channel of airing exhaust on the aviation baffle, has increaseed the amount of wind of airing exhaust, and cut apart the main wind channel that has compressed between aviation baffle and the backplate, causes the wind speed to accelerate, accomplishes to air exhaust fast more.

A plurality of horizontal guiding gutter 5 is corresponding to the top, middle and the bottom setting of vertical guiding gutter 4 respectively, and three groups horizontal guiding gutter 5 is from last to being top horizontal groove 5a, middle horizontal groove 5b and bottom horizontal groove 5c down in proper order. The plurality of transverse guide grooves 5 and the two vertical guide grooves 4 form a structure in a shape like a Chinese character ri, and the area between the vertical guide grooves 4 is divided up and down through the plurality of transverse guide grooves, so that the gas in the ventilation cavity flows rapidly.

The vertical diversion trench 4 comprises an upper diversion trench 11 positioned at the upper part and a lower diversion trench 12 positioned at the lower part, the upper diversion trench 11 and the lower diversion trench 12 are arranged at an isolated interval, and the transverse diversion trench 5 positioned in the middle area of the vertical diversion trench is correspondingly arranged between the upper diversion trench 11 and the lower diversion trench 12; the upper diversion trench, the lower diversion trench and the three groups of transverse diversion trenches 5 form a structure in a shape of a Chinese character 'ri'. According to the laminar flow effect of the gas, the air is efficiently exhausted and guided from bottom to top.

Guide plate 3 is including the vertical guide plate 7 that corresponds to backplate 1 and the slant guide plate 9 that corresponds to roof 8 in the fume chamber body, vertical guide plate 7 is parallel and the interval sets up in backplate 1, the one end of slant guide plate 9 is corresponding to the top setting of vertical guide plate 7, and the other end deviates from backplate 1 and sets up on roof 8 towards the oblique top, through vertical guide plate and slant guide plate, produces atmospheric pressure change in two plate body transition departments for the bottom air current forms the efflux form, and upper portion atmospheric pressure reduces, increases the smooth and easy nature and the flow speed of bottom air current circulation that makes progress.

The slant guide plate 9 sets up and constitutes ventilation gap 15 with vertical guide plate 7 clearance, and through ventilation gap's air current, the atmospheric pressure of vertical guide plate and slant guide plate in the junction that can further reduce increases smooth and easy nature and the flow velocity of bottom air current circulation that makes progress to make gaseous negative pressure air exit 19 discharge from the roof fast.

Because of experimental environment is changeable, the experiment requirement is changeable, can increase fittings such as experiment water electricity according to the experimental conditions, be provided with wiring notch 16 and inlet slot 17 on the vertical guide plate 7, when increasing fittings such as water electricity gas, also increased the wind channel of airing exhaust on the aviation baffle, increaseed the amount of wind of airing exhaust, and cut apart the main wind channel of having compressed between guide plate and the backplate, cause the wind speed to accelerate, accomplish fast airing exhaust more.

The guide plate 3 is connected to the back plate 1 through a plurality of connecting pieces 18, the connecting pieces 18 are adjustably arranged in the normal direction of the back plate, the connecting pieces 18 comprise cushion blocks and bolts, the distance between the guide plate 3 and the back plate 1 can be changed through adjustment of the connecting pieces, and therefore the width of the ventilation cavity 2 is changed and the air guiding speed is adjusted.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims

1. The utility model provides a fume chamber is with wind guiding device that airs exhaust which characterized in that: the ventilating hood comprises a ventilating hood body and a guide plate (3) arranged in an inner cavity of the ventilating hood body, a ventilating cavity (2) is formed between the guide plate (3) and a back plate (1) of the ventilating hood body, and at least one group of guide openings are formed in the guide plate (3) and communicated with the ventilating cavity (2); the flow guide opening comprises a plurality of vertical flow guide grooves (4) which are arranged at intervals in the transverse direction, and the length direction of each vertical flow guide groove (4) is vertically arranged; the ventilation cavity (2) is divided into a plurality of air guide channels through a plurality of vertical guide grooves (4).

2. An exhaust air guide device for a fume hood according to claim 1, characterized in that: the flow guide port further comprises a transverse flow guide groove (5), at least one transverse flow guide groove (5) is arranged in the transverse direction, the length direction of each transverse flow guide groove (5) is transversely arranged, and the transverse flow guide grooves (5) are arranged between every two adjacent vertical flow guide grooves (4).

3. An exhaust air guide device for a fume hood according to claim 2, wherein: a plurality of transverse diversion trenches (5) are sequentially arranged between every two adjacent vertical diversion trenches (4) from top to bottom at intervals.

4. An exhaust air guide device for a fume hood according to claim 3, wherein: the plurality of transverse diversion grooves (5) are respectively arranged corresponding to the top, the middle and the bottom of the vertical diversion groove (4), and the plurality of transverse diversion grooves (5) and the two vertical diversion grooves (4) form a structure in a shape like the Chinese character 'ri'.

5. An exhaust air guide device for a fume hood according to claim 4, wherein: the vertical diversion trenches (4) comprise upper diversion trenches (11) positioned on the upper part and lower diversion trenches (12) positioned on the lower part, the upper diversion trenches (11) and the lower diversion trenches (12) are arranged at intervals in a partition mode, and the transverse diversion trenches (5) positioned in the middle areas of the vertical diversion trenches are correspondingly arranged between the upper diversion trenches (11) and the lower diversion trenches (12); the upper diversion trench, the lower diversion trench and the three groups of transverse diversion trenches (5) form a structure in a shape of a Chinese character 'ri'.

6. An exhaust air guide device for a fume hood according to claim 1, characterized in that: guide plate (3) are including vertical guide plate (7) corresponding to backplate (1) and slant guide plate (9) corresponding to roof (8) in the fume chamber body, vertical guide plate (7) are parallel and the interval sets up in backplate (1), the one end of slant guide plate (9) is corresponding to the top setting of vertical guide plate (7), and the other end deviates from backplate (1) and sets up on roof (8) towards the oblique top.

7. An exhaust air guide device for a fume hood according to claim 6, wherein: the oblique guide plate (9) and the vertical guide plate (7) are arranged in a clearance mode to form a ventilation gap (15).