CN210907332U - Air supplementing and guiding device for ventilation cabinet - Google Patents
Air supplementing and guiding device for ventilation cabinet Download PDFInfo
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- CN210907332U CN210907332U CN201920614716.9U CN201920614716U CN210907332U CN 210907332 U CN210907332 U CN 210907332U CN 201920614716 U CN201920614716 U CN 201920614716U CN 210907332 U CN210907332 U CN 210907332U
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- air supplementing
- air
- supplementing
- cabinet body
- flow guide
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Abstract
The utility model discloses an air supplementing and guiding device for a fume hood in the technical field of experimental equipment, which comprises a working table surface and an air supplementing mechanism which are fixedly connected on a rear cabinet body, wherein the rear side of the rear cabinet body is a fixed back plate, the front cabinet body, the working table surface and the rear cabinet body form a cavity, the air supplementing mechanism comprises an air supplementing frame which is fixedly connected on the cabinet body, the air supplementing frame is communicated with the external environment, the upper side of the air supplementing frame is detachably connected with an air supplementing shell with an air supplementing cavity, an air supplementing opening communicated with the air supplementing cavity is arranged on the air supplementing frame, a plurality of air supplementing holes are distributed on the air supplementing shell towards one side in the cabinet body, and the air supplementing cavity is communicated with the cavity through the air supplementing holes; a flow guide assembly is fixedly connected in front of the fixed back plate, a ventilation cavity is formed among the flow guide assembly, the fixed back plate, the working table surface and the side wall of the rear cabinet body, the flow guide assembly comprises at least one lower flow guide plate which is vertically arranged, and at least one flow guide block is fixedly connected to the fixed back plate; the utility model discloses can mend wind toward going into the fume chamber, it is fast to air exhaust, improves ventilation efficiency.
Description
Technical Field
The utility model belongs to the technical field of experimental facilities, in particular to fume chamber is with mending wind guiding device.
Background
In a laboratory, air pollution in the laboratory is often caused due to the use of various chemical substances, and some substances are bad in taste and harmful to health, so that the experimental research needs to be carried out by adopting the air supplementing and guiding device for the fume hood. Ordinary fume chamber is with mending wind guiding device main part is a box, sets up air exhaust channel and mends the wind passageway on the box, arranges experimental facilities in the box of fume chamber during the use to can discharge harmful gas.
In the prior art, a ventilation cabinet comprises a front cabinet body and a rear cabinet body, wherein the front cabinet body is fixedly connected with the rear cabinet body, a working table is fixedly connected between the front cabinet body and the rear cabinet body, a fixed back plate is arranged at the rear side of the rear cabinet body, a ventilation cavity for ventilation is formed among the fixed back plate, the working table, the front cabinet body and the side wall of the rear cabinet body, and an air outlet is formed in the top of the rear cabinet body and communicated with the ventilation cavity; in this design, can't mend wind to the fume chamber, indoor gaseous constantly gets into the fume chamber, and indoor cold load or heat load scatter and disappear thereupon, and the energy consumption is great, and the gaseous air that gets into in the ventilation chamber is discharged from the air exit, and the gaseous upward exhaust speed that gets into in the ventilation chamber is little, and ventilation efficiency is low.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model discloses an overcome the weak point among the above-mentioned prior art, solve the technical problem that ventilation efficiency is low among the prior art, provide a fume chamber is with mending wind guiding device, the utility model discloses simple structure can mend the wind toward the fume chamber is interior for air exhaust speed improves ventilation efficiency.
The purpose of the utility model is realized like this: a wind supplementing and guiding device for a ventilation cabinet comprises a working table top fixedly connected to a rear cabinet body, wherein the rear side of the rear cabinet body is a fixed back plate, and a cavity is formed by a front cabinet body, the working table top and the rear cabinet body; the front of the fixed back plate is fixedly connected with a flow guide assembly, a ventilation cavity is formed among the flow guide assembly, the fixed back plate, the working table surface and the side wall of the rear cabinet body, the flow guide assembly comprises at least one vertically arranged lower flow guide plate, and at least one flow guide block is fixedly connected to the fixed back plate right behind the lower flow guide plate at the lowest end.
In the utility model, the gas entering the cavity along the working table surface enters the ventilation cavity, the sectional area of the gas entering the cavity at the position of the flow guide block is suddenly reduced, the upward wind speed of the working table surface is accelerated, when wind needs to be supplemented, the gas outside the ventilation cabinet sequentially enters the wind supplementing frame and the wind supplementing opening into the wind supplementing cavity, and the gas entering the wind supplementing cavity is discharged into the cavity through the wind supplementing hole, so that the ventilation speed is accelerated, and the energy loss is reduced; the utility model supplies air through the air supply mechanism, the guide block accelerates the upward air speed of the working table, accelerates the ventilation speed and improves the ventilation efficiency; the air supply device can be applied to the work of supplying air and guiding flow for the fume chamber.
In order to further realize quick air supplement, an air supplement fan is connected to the air supplement frame, an air outlet of the air supplement fan is communicated with the air supplement cavity, and an air inlet of the air supplement fan is communicated with the external environment.
In order to uniformly supplement air, the upper part of the air supplementing frame is provided with an air supplementing frame with a containing cavity, the air supplementing fan is arranged on the air supplementing frame below the air supplementing frame, an air outlet of the air supplementing fan is communicated with the containing cavity through an air supplementing opening, a plurality of air supplementing air outlets are distributed on the upper side of the air supplementing frame, and the air supplementing shell is connected to the upper side of the air supplementing frame.
In order to further facilitate the disassembly and assembly of the air supplementing shell, at least two positioning shafts are fixedly arranged on the lower side of the air supplementing shell, positioning holes corresponding to the positioning shafts are formed in the air supplementing frame, positioning sleeves are connected in the positioning holes, and the positioning shafts are inserted in the positioning sleeves; in the design, when the air supplementing shell needs to be installed, the air supplementing shell is directly inserted into the air supplementing frame through the positioning shaft, and when the air supplementing shell is detached, the air supplementing shell only needs to be pulled out from the air supplementing frame, so that the air supplementing device is convenient to disassemble and assemble.
In order to further realize air exhaust, the flow guide assembly further comprises an upper flow guide plate, a first ventilation gap is reserved between the upper flow guide plate and a top plate of the fixed cabinet body, two lower flow guide plates are arranged, a second ventilation gap is reserved between the two lower flow guide plates, a third ventilation gap is reserved between the lower flow guide plate at the lowest end and the working table top, and the upper flow guide plate is upward and forward inclined; in this design, the sectional area of going up the guide plate is greater than the sectional area of the lower guide plate of vertical setting, and the atmospheric pressure of ventilation gap one is greater than the atmospheric pressure of ventilation gap two and ventilation gap three, and the preferred upwards row of following of ventilation gap one of gas, the gas of ventilation gap two and ventilation gap three is upwards discharged afterwards, and the air exit department of the back cabinet body forms the negative pressure, and the air current discharges more smoothly.
In order to accelerate the wind speed of the working table, the number of the flow guide blocks is two, one side of each flow guide block is attached to the inner wall of the rear cabinet body in the left-right direction, the other side of each flow guide block on the left side inclines downwards from left to right, and the other side of each flow guide block on the right side inclines downwards from right to left.
In order to further accelerate the air speed of the working table, a junction box and a water receiving box are fixedly connected to the front side of the fixed back plate between the flow guide blocks, the front side of the junction box is located in front of the lower flow guide plate I, a water receiving cup with a water containing cavity is fixedly connected to the front side of the water receiving box, a water outlet hole is formed in the backward side of the water receiving cup, a water outlet pipe extending outwards is connected to the water receiving box, and the water outlet pipe is communicated with the water outlet hole; in the design, the water receiving box is used for receiving condensed water flowing down from the inner wall of the rear cabinet body; meanwhile, the gas discharged from bottom to top is divided into three paths by one flow guide block, the junction box, the water receiving cup and the other flow guide block, the speed of the gas is accelerated upwards by each path, and the gas flow is more stable after the wind speed is accelerated.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a view from a-a in fig. 2.
Fig. 4 is a view from the direction B-B in fig. 2.
Fig. 5 is a rear view of the present invention.
Fig. 6 is a three-dimensional structure view of the middle air supplement mechanism of the present invention.
Fig. 7 is a partial enlarged view at C in fig. 6.
Fig. 8 is a three-dimensional structure view of the middle air supplement casing of the present invention.
Fig. 9 is a top view of the middle air supplement frame of the present invention.
Fig. 10 is a view from direction D-D in fig. 9.
Fig. 11 is a partial enlarged view at E in fig. 9.
The air supply device comprises a junction box 1, a flow guide assembly 2, an upper flow guide plate 201, a lower flow guide plate 202, a water receiving box 3, a water receiving cup 4, an air supplement mechanism 5, an air supplement fan 501, an air supplement frame 502a, an air supplement chamber 502b, an air supplement port 502c, an air supplement air outlet 502d, an air supplement shell 503, an air supplement hole 504, a positioning shaft 505, a through hole 506, a positioning sleeve 507, a flow guide block 6, a front cabinet body 7, a cavity 8, a ventilation cavity 9, a working table top 10, a ventilation gap II 11, a ventilation gap I12, a ventilation gap III 13, a rear cabinet body 14, a top plate 1401, a 1402 fixed back plate and a water outlet pipe.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 11, an air supplementing and guiding device for a ventilation hood includes a working table 10 fixedly connected to a rear cabinet 14, and an air supplementing mechanism 5 disposed between a front cabinet 7 and the rear cabinet 14, a rear side of the rear cabinet 14 is a fixed back plate 1402, the front cabinet 7, the working table 10 and the rear cabinet 14 form a cavity 8, the air supplementing mechanism 5 includes an air supplementing frame 502 fixedly connected to the cabinets, the air supplementing frame 502 is communicated with an external environment, an air supplementing housing 503 having an air supplementing cavity is detachably connected to an upper side of the air supplementing frame 502, an air supplementing opening 502c communicated with the air supplementing cavity is opened on the air supplementing frame 502, a plurality of air supplementing holes 504 are arranged on one side of the air supplementing housing 503 facing the inside of the cabinet, and the air supplementing cavity is communicated with the cavity 8 through the air supplementing holes 504; the air supplementing frame 502 is connected with an air supplementing fan 501, an air outlet of the air supplementing fan 501 is communicated with the air supplementing cavity, and an air inlet of the air supplementing fan 501 is communicated with the external environment; the upper part of the air supplementing frame 502 is provided with an air supplementing frame 502a with an accommodating cavity 502b, an air supplementing fan 501 is arranged on the air supplementing frame 502 below the air supplementing frame 502a, an air outlet of the air supplementing fan 501 is communicated with the accommodating cavity 502b through an air supplementing opening 502c, a plurality of air supplementing air outlets 502d are arranged on the upper side of the air supplementing frame 502a, an air supplementing shell 503 is connected to the upper side of the air supplementing frame 502a, and through holes 506 corresponding to the air supplementing air outlets 502d are arranged on the lower side of the air supplementing shell 503; at least two positioning shafts 505 are fixedly arranged on the lower side of the air supplementing shell 503, positioning holes corresponding to the positioning shafts 505 are formed in the air supplementing frame 502a, positioning sleeves 507 are connected in the positioning holes, and the positioning shafts 505 are inserted in the positioning sleeves 507.
The structure for realizing the flow guiding is specifically that a flow guiding component 2, a flow guiding component 2 and a fixed back plate 1402 are fixedly connected in front of the fixed back plate 1402, a ventilation cavity 9 is formed between the side wall of the working table top 10 and the side wall of the rear cabinet 14, the flow guide assembly 2 comprises an upper flow guide plate 201 which inclines upwards and forwards and two lower flow guide plates 202 which are vertically arranged, two flow guide blocks 6 are fixedly connected to a fixed back plate 1402 right behind the lower flow guide plate 202 at the lowest end, a ventilation gap II 12 is reserved between the upper flow guide plate 201 and a top plate 1401 of the fixed cabinet, a ventilation gap II 11 is reserved between the two lower flow guide plates 202, the lower flow guide plate 202 is fixedly connected with the fixed back plate 1402, the downward end of the upper flow guide plate 201 is fixedly connected with the flow guide plate 1401 at the upper end, the upward end of the upper flow guide plate 201 is fixedly connected with the top plate 1401 of the rear cabinet 14, and a; in the left-right direction, one side of the flow guide block 6 is attached to the inner wall of the rear cabinet body 14, the other side of the flow guide block 6 on the left side is inclined downwards from left to right, and the other side of the flow guide block 6 on the right side is inclined downwards from right to left; the fixed back plate 1402 between the flow guide blocks 6 is fixedly connected with a junction box 1 and a water receiving box 3 on the front side, the front side of the junction box 1 is in front of the lower flow guide plate 202, the front side of the water receiving box 3 is fixedly connected with a water receiving cup 4 with a water containing cavity, one backward side of the water receiving cup 4 is provided with a water outlet hole, the water receiving box 3 is connected with a water outlet pipe 15 extending outwards, and the water outlet pipe 15 is communicated with the water outlet hole.
In the utility model, the gas entering the cavity 8 along the working table 10 enters the ventilation cavity 9, the gas entering the ventilation cavity 9 along the working table 10 and the lower guide plate 202 at the lowest end, a guide block 6 and a junction box 1, the water receiving cup 4 and the other flow guide block 6 divide the gas discharged from bottom to top into three paths, each path accelerates the gas speed to the top, the gas flow is more stable after the wind speed is accelerated, the ventilation efficiency is improved while the gas leakage rate is reduced, the sectional area of the upper flow guide plate 201 is larger than that of the vertically arranged lower flow guide plate 202, the gas pressure at the second ventilation gap 12 is larger than that at the second ventilation gap 11 and that at the third ventilation gap 13, the gas is preferentially discharged upwards from the second ventilation gap 12, the gas at the second ventilation gap 11 and that at the third ventilation gap 13 are then discharged upwards, negative pressure is formed at the air outlet of the rear cabinet body 14, and the gas flow is discharged more smoothly; when air supplement is needed, the air supplement fan 501 is opened, the air supplement fan 501 rapidly extracts air outside the fume hood, an air outlet of the air supplement fan 501 discharges the air, the discharged air enters the accommodating cavity 502b through the air supplement opening 502c, the air entering the accommodating cavity 502b flows into the air supplement cavity through the air supplement air outlet 502d, and the air flows into the cavity 8 through the uniformly distributed air supplement holes 504 to accelerate the ventilation speed; meanwhile, the water receiving box 3 is used for receiving condensed water flowing down from the inner wall of the rear cabinet body 14, a cup used for receiving the condensed water is placed on the worktable surface 10 corresponding to the flow guide block 6 in an inclined and downward mode, and the condensed water is respectively dripped into the water receiving cup 4 and the cup; the utility model has simple structure, the air supply mechanism 5 realizes air supply, reduces energy loss, the air supply shell 503 is convenient to disassemble and assemble, the guide assembly 2 ensures that the air flow is discharged more smoothly, and the guide block 6, the junction box 1 and the water receiving box 3 are jointly arranged to accelerate upward wind speed; the air supply device can be applied to the work of supplying air to the fume hood.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.
Claims (7)
1. A wind supplementing and guiding device for a ventilation cabinet comprises a working table top fixedly connected to a rear cabinet body, wherein the rear side of the rear cabinet body is a fixed back plate, and a cavity is formed by a front cabinet body, the working table top and the rear cabinet body; the front of the fixed back plate is fixedly connected with a flow guide assembly, a ventilation cavity is formed among the flow guide assembly, the fixed back plate, the working table surface and the side wall of the rear cabinet body, the flow guide assembly comprises at least one vertically arranged lower flow guide plate, and at least one flow guide block is fixedly connected to the fixed back plate right behind the lower flow guide plate at the lowest end.
2. The air supplementing and guiding device for the fume hood according to claim 1, wherein an air supplementing fan is connected to the air supplementing frame, an air outlet of the air supplementing fan is communicated with the air supplementing cavity, and an air inlet of the air supplementing fan is communicated with an external environment.
3. The air supplementing and guiding device for the ventilation cabinet according to claim 2, wherein the upper portion of the air supplementing frame is an air supplementing frame with a containing cavity, the air supplementing fan is arranged on the air supplementing frame below the air supplementing frame, an air outlet of the air supplementing fan is communicated with the containing cavity through an air supplementing opening, a plurality of air supplementing air outlets are arranged on the upper side of the air supplementing frame, and the air supplementing shell is connected to the upper side of the air supplementing frame.
4. The wind supplementing and guiding device for the ventilation cabinet as claimed in claim 3, wherein at least two positioning shafts are fixedly arranged on the lower side of the wind supplementing casing, positioning holes corresponding to the positioning shafts are formed in the wind supplementing frame, positioning sleeves are connected in the positioning holes, and the positioning shafts are inserted in the positioning sleeves.
5. The air supplementing and guiding device for the ventilation cabinet according to claim 1, wherein the guiding assembly further comprises an upper guiding plate, a first ventilation gap is reserved between the upper guiding plate and a top plate of the fixed cabinet body, two lower guiding plates are arranged, a second ventilation gap is reserved between the two lower guiding plates, a third ventilation gap is reserved between the lower guiding plate at the lowest end and the working table, and the upper guiding plate is upward and forward inclined.
6. The air supplementing and guiding device for the fume hood according to any one of claims 1 to 5, wherein two guiding blocks are provided, in the left-right direction, one side of each guiding block is attached to the inner wall of the rear cabinet body, the other side of the left guiding block is inclined downwards from left to right, and the other side of the right guiding block is inclined downwards from right to left.
7. The air supplementing and guiding device for the ventilation hood as claimed in claim 6, wherein a junction box and a water receiving box are fixedly connected to the front side of the fixed back plate between the guiding blocks, the front side of the junction box is located in front of the lower guiding plate I, a water receiving cup with a water containing cavity is fixedly connected to the front side of the water receiving box, a water outlet hole is formed in the backward side of the water receiving cup, an outward extending water outlet pipe is connected to the water receiving box, and the water outlet pipe is communicated with the water outlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920614716.9U CN210907332U (en) | 2019-04-30 | 2019-04-30 | Air supplementing and guiding device for ventilation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920614716.9U CN210907332U (en) | 2019-04-30 | 2019-04-30 | Air supplementing and guiding device for ventilation cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210907332U true CN210907332U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920614716.9U Active CN210907332U (en) | 2019-04-30 | 2019-04-30 | Air supplementing and guiding device for ventilation cabinet |
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| CN (1) | CN210907332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111790227A (en) * | 2020-07-16 | 2020-10-20 | 福州市鸿生建材有限公司 | Environment-friendly regeneration system of mixing plant |
-
2019
- 2019-04-30 CN CN201920614716.9U patent/CN210907332U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111790227A (en) * | 2020-07-16 | 2020-10-20 | 福州市鸿生建材有限公司 | Environment-friendly regeneration system of mixing plant |
| CN111790227B (en) * | 2020-07-16 | 2021-06-01 | 福建鸿生材料科技股份有限公司 | Environment-friendly regeneration system of mixing plant |
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