CN210752727U - Window body anti-leakage structure of safety cabinet - Google Patents
Window body anti-leakage structure of safety cabinet Download PDFInfo
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- CN210752727U CN210752727U CN201921547042.1U CN201921547042U CN210752727U CN 210752727 U CN210752727 U CN 210752727U CN 201921547042 U CN201921547042 U CN 201921547042U CN 210752727 U CN210752727 U CN 210752727U
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- return air
- working chamber
- safety cabinet
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- window
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Abstract
The utility model relates to a biological safety cabinet field, concretely relates to window form leak protection structure of safety cabinet, it has the working chamber and has the return air wind channel of negative pressure, be equipped with a plurality of first return air holes on the inside wall of the opening part of working chamber, the top of the opening part of working chamber is equipped with a plurality of second return air holes, first return air hole and second return air hole set up adjacent with the window form when the opening part of working chamber is located to the window form lid, and first return air hole and second return air hole all communicate in the return air wind channel, the negative pressure in return air wind channel makes first return air hole and second return air hole constantly suction air, external air can be by return air hole suction when getting into the clearance between window form and the safety cabinet, equally, the air in the working chamber also can be by return air hole suction when getting into above-mentioned clearance, in order to avoid the air in the working chamber to circulate with external air, thereby improve personnel's of safety cabinet, And (4) product protection performance.
Description
Technical Field
The utility model relates to a biological safety cabinet field especially relates to a window form leak protection structure of safety cabinet.
Background
The biosafety cabinet is designed for protecting the operator, the laboratory environment and the experimental materials from being exposed to infectious aerosols and splashes which may be generated in the operation process when operating infectious experimental materials such as primary cultures, strains of bacteria and viruses and diagnostic specimens. The II-level biological safety cabinet is provided with a front window operation port, an operator can operate in the safety cabinet through the front window operation port, negative pressure airflow sucked inwards through the front window operation port is used for protecting the safety of personnel, descending airflow filtered by the high-efficiency filter is used for protecting objects tested in the safety cabinet, and the airflow is discharged out of the safety cabinet after being filtered by the high-efficiency filter and used for protecting the environment.
Be equipped with slidable windshield on the front window operation opening, because windshield is the moving part, consequently there is the clearance between windshield and the cabinet body certainly, the atmospheric pressure of the workspace as the safety cabinet is less than external atmospheric pressure, the outside foul air of safety cabinet can invade the front window operation opening of safety cabinet and pollute the experimental sample through above-mentioned clearance, and the atmospheric pressure of the workspace as the safety cabinet is higher than external atmospheric pressure, the air that is polluted by the experimental sample in the safety cabinet can spill over from above-mentioned clearance, cause the injury to the experimenter.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a window form leak protection structure of safety cabinet to there is the problem of air leakage in the front window glass of solving current safety cabinet.
Based on this, the utility model provides a window form leak protection structure of safety cabinet, include the working chamber and have the return air wind channel of negative pressure, be equipped with a plurality of first return air holes on the inside wall of the opening part of working chamber, the top of the opening part of working chamber is equipped with a plurality of second return air holes, first return air hole and second return air hole are located at the window form lid during the opening part of working chamber with the window form is adjacent to be set up, just first return air hole and second return air hole all communicate in the return air wind channel.
Preferably, a guide rail is arranged on the side edge of the opening of the working cavity, and the window body is connected to the guide rail in a sliding mode.
Preferably, the window is arranged opposite to the second air return opening.
Preferably, a plurality of the first return holes are vertically arranged.
Preferably, a plurality of the second return holes are horizontally arranged.
Preferably, the air conditioner further comprises a static pressure cavity and a fan, the bottom end of the static pressure cavity is communicated with the top end of the working cavity, the air inlet end of the fan is communicated with the return air duct, and the air outlet end of the fan is communicated with the static pressure cavity.
Preferably, a filter is arranged between the static pressure cavity and the working cavity.
The utility model discloses a window form leak protection structure of safety cabinet, it has the working chamber and has the return air wind channel of negative pressure, be equipped with a plurality of first return air holes on the inside wall of the opening part of working chamber, the top of the opening part of working chamber is equipped with a plurality of second return air holes, first return air hole and second return air hole set up with the window form is adjacent when the opening part of working chamber is located to the window form lid, and first return air hole and second return air hole all communicate in the return air wind channel, the negative pressure in return air wind channel makes first return air hole and second return air hole constantly suction air, external air can be by return air hole suction when getting into the clearance between window form and the safety cabinet, equally, the air of working chamber also can be by return air hole suction when getting into above-mentioned clearance, in order to avoid the air and the outside circulation of air of working chamber.
Drawings
Fig. 1 is a schematic perspective view of a window anti-leakage structure of a safety cabinet according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a first return air hole and a second return air hole of a window leakage-proof structure of a safety cabinet according to an embodiment of the present invention;
fig. 3 is a schematic front view of a window anti-leakage structure of a safety cabinet according to an embodiment of the present invention;
fig. 4 is a schematic side view of the window anti-leakage structure of the safety cabinet according to the embodiment of the present invention.
Wherein, 1, a working cavity; 2. an air return duct; 3. a first return vent; 4. a second return air hole; 5. a window body; 6. a static pressure chamber; 7. a fan; 8. and (3) a filter.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Combine fig. 1 to 4 to show schematically the utility model discloses a safety cabinet's window form leak protection structure, including working chamber 1 and return air wind channel 2, wherein, have the negative pressure in the return air wind channel 2, working chamber 1 is used for placing the laboratory sample and carries out the biological assay, is equipped with on working chamber 1 to communicate in external opening, and operating personnel accessible opening operates the laboratory sample. As shown in fig. 2, a plurality of first air return holes 3 are formed in the inner side wall of the opening of the working chamber 1, a plurality of second air return holes 4 are formed above the opening of the working chamber 1, and the first air return holes 3 and the second air return holes 4 are both communicated with the air return duct 2. When the opening part of working chamber 1 was located to the lid of window form 5, first return air hole 3 and second return air hole 4 set up with window form 5 is adjacent, the negative pressure in return air wind channel 2 makes first return air hole 3 and second return air hole 4 constantly suction air, external air can be by the return air hole suction when getting into the clearance between window form 5 and the safety cabinet, equally, the air in the working chamber 1 also can be by the return air hole suction when getting into above-mentioned clearance, in order to avoid the air in the working chamber 1 and external circulation of air.
The side of the opening of working chamber 1 is equipped with the guide rail, and window body 5 slidable connects in the guide rail, and window body 5 can slide and cover or let and be located the opening of working chamber 1 along the guide rail. The window 5 is arranged opposite to the second air return opening, i.e. the second air return opening is arranged opposite to the opening direction of the working cavity 1.
In order to avoid that the area of the return air hole is too large or too small, so that the working chamber 1 generates a turbulent flow due to too large attraction of the return air duct 2 (the area of the return air hole is too large) or the return air duct 2 cannot completely suck polluted air back to a polluted air treatment area due to too small attraction (the area of the return air hole is too small), the size and the density of the return air hole are specially regulated, specifically, the plurality of first return air holes 3 are vertically arranged, the first return air holes 3 are round holes, long round holes or square holes, preferably round holes, the diameter of the first return air holes 3 is 3-6mm, and the hole interval is 6-25 mm. The plurality of second air return holes 4 are horizontally arranged, the second air return holes 4 are round holes, long round holes or square holes, preferably round holes, the diameter of each second air return hole 4 is 3-6mm, the hole spacing is 6-25mm, and 1-3 rows of second air return holes 4 are formed in the inner side wall of the working cavity 1.
The safety cabinet further comprises a static pressure cavity 6 and a fan 7, the bottom end of the static pressure cavity 6 is communicated with the top end of the working cavity 1, an air inlet end of the fan 7 is communicated with the air return duct 2, an air exhaust end of the fan 7 is communicated with the static pressure cavity 6, a filter 8 is arranged between the static pressure cavity 6 and the working cavity 1, the air inlet end of the fan 7 can generate negative pressure, and air exhausted by the fan 7 generates positive pressure in the static pressure cavity 6 and enters the working cavity 1 through the filter 8 so as to generate down air flow in the working cavity 1.
To sum up, the window body anti-leakage structure of the safety cabinet of the utility model is provided with a working chamber 1 and a return air duct 2 with negative pressure, a plurality of first return air holes 3 are arranged on the inner side wall of the opening part of the working chamber 1, a plurality of second return air holes 4 are arranged above the opening part of the working chamber 1, the first return air holes 3 and the second return air holes 4 are arranged adjacent to the window body 5 when the window body 5 is covered on the opening part of the working chamber 1, and first return air hole 3 and second return air hole 4 all communicate in return air wind channel 2, and the negative pressure in return air wind channel 2 makes first return air hole 3 and second return air hole 4 constantly suction air, and external air can be by the return air hole suction when getting into the clearance between window form 5 and the safety cabinet, and is same, and the air in the working chamber 1 also can be by the return air hole suction when getting into above-mentioned clearance to avoid the air in the working chamber 1 and external circulation of air.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a window form leak protection structure of safety cabinet, its characterized in that includes the working chamber and has the return air wind channel of negative pressure, be equipped with a plurality of first return air holes on the inside wall of the opening part of working chamber, the top of the opening part of working chamber is equipped with a plurality of second return air holes, first return air hole and second return air hole are located at the window form lid during the opening part of working chamber with the window form is adjacent to be set up, just first return air hole and second return air hole all communicate in the return air wind channel.
2. The window leakage preventing structure of a safety cabinet according to claim 1, wherein a guide rail is provided at a side of the opening of the working chamber, and the window is slidably coupled to the guide rail.
3. The window leakage prevention structure of a safety cabinet according to claim 1, wherein the window is disposed opposite to the second air return opening.
4. The window leakage prevention structure of a safety cabinet according to claim 1, wherein a plurality of the first return holes are vertically disposed.
5. The window leakage preventing structure of a safety cabinet according to claim 1, wherein a plurality of the second return holes are horizontally disposed.
6. The window leakage-proof structure of the safety cabinet according to claim 1, further comprising a static pressure chamber and a fan, wherein the bottom end of the static pressure chamber is communicated with the top end of the working chamber, the air inlet end of the fan is communicated with the return air duct, and the air outlet end of the fan is communicated with the static pressure chamber.
7. The window leakage prevention structure of a safety cabinet according to claim 6, wherein a filter is disposed between the static pressure chamber and the working chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921547042.1U CN210752727U (en) | 2019-09-17 | 2019-09-17 | Window body anti-leakage structure of safety cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921547042.1U CN210752727U (en) | 2019-09-17 | 2019-09-17 | Window body anti-leakage structure of safety cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210752727U true CN210752727U (en) | 2020-06-16 |
Family
ID=71052928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921547042.1U Active CN210752727U (en) | 2019-09-17 | 2019-09-17 | Window body anti-leakage structure of safety cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210752727U (en) |
-
2019
- 2019-09-17 CN CN201921547042.1U patent/CN210752727U/en active Active
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