CN219849665U - Biological safety cabinet - Google Patents
Biological safety cabinet Download PDFInfo
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- CN219849665U CN219849665U CN202321040037.8U CN202321040037U CN219849665U CN 219849665 U CN219849665 U CN 219849665U CN 202321040037 U CN202321040037 U CN 202321040037U CN 219849665 U CN219849665 U CN 219849665U
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- hydrogen peroxide
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- way valve
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 332
- 238000004891 communication Methods 0.000 claims abstract description 56
- 238000001914 filtration Methods 0.000 claims abstract description 40
- 239000011521 glass Substances 0.000 claims description 28
- 230000001954 sterilising effect Effects 0.000 claims description 22
- 238000004659 sterilization and disinfection Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 19
- 238000000354 decomposition reaction Methods 0.000 claims description 11
- 230000000007 visual effect Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000008030 elimination Effects 0.000 description 6
- 238000003379 elimination reaction Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 241000700605 Viruses Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The utility model provides a biosafety cabinet, and belongs to the technical field of medical equipment. Comprising the following steps: the cabinet body is internally provided with a filtering chamber and a working chamber; one end of the channel is communicated with the filtering chamber, the other end of the channel is communicated with the working chamber, and the communicated air channel, the filtering chamber and the working chamber form a circulating air channel; the blower is arranged in the circulating air duct, and the hydrogen peroxide generator is arranged on the cabinet body and comprises a hydrogen peroxide generating device and a hydrogen peroxide decomposing device; the output end of the first communication pipeline is communicated with the circulating air duct and the input end of the first communication pipeline can be controlled to be communicated with the output end of the hydrogen peroxide generating device or the output end of the hydrogen peroxide decomposing device, and the input end of the second communication pipeline is communicated with the circulating air duct and the output end of the second communication pipeline can be controlled to be communicated with the input end of the hydrogen peroxide generating device or the input end of the hydrogen peroxide decomposing device.
Description
Technical Field
The utility model relates to the technical field of biomedical equipment, in particular to a biosafety cabinet.
Background
The existing biological safety cabinet has two sterilization modes, namely, ultraviolet lamps are started to sterilize the cabin of the biological safety cabinet after the safety cabinet is used, so that the effects of killing viruses and preventing reagent pollution and personnel infection are achieved, and reagent samples and personnel are protected to the greatest extent; and secondly, independent hydrogen peroxide disinfection equipment is used, and the equipment gasifies hydrogen peroxide and conveys the gasified hydrogen peroxide into the biosafety cabinet through a pipeline to complete disinfection. However, the above killing method has the following disadvantages:
the ultraviolet lamp can only illuminate biological safety cabinet experiment table top and cabin body, and the part below the table top and the exhaust channel and the high-efficient filter of biological safety cabinet are the irradiation dead angle of ultraviolet lamp, if there is virus bacterial residue in these places, ultraviolet lamp can't disinfect, not only can influence the accuracy of experimental result, biological security can't guarantee yet.
The volume of the independent hydrogen peroxide equipment is larger, the space occupied for a mobile laboratory and a laboratory with relatively compact space is occupied, when the safety cabinet is killed, the air outlet of the biological safety cabinet is blocked, the disinfection program can be carried out after the air pipe is connected, the operation is inconvenient, and the working efficiency of experimental staff is reduced.
Disclosure of Invention
In order to overcome the problems in the related art, the utility model provides a biosafety cabinet.
The first aspect of the present utility model proposes a biosafety cabinet comprising:
the cabinet body is internally provided with a filter chamber and a working chamber which are adjacently arranged, a filter is arranged in the filter chamber, and gas flowing through the filter chamber can flow into the working chamber after being filtered by the filter;
one end of the channel is communicated with the filtering chamber, the other end of the channel is communicated with the working chamber, and the communicated air channel, the filtering chamber and the working chamber form a circulating air channel;
the fan is arranged in the circulating air duct and used for driving air flow to circulate in the circulating air duct;
the hydrogen peroxide generator is arranged on the cabinet body and comprises a hydrogen peroxide generating device and a hydrogen peroxide decomposing device;
the output end of the first communication pipeline is communicated with the circulating air duct and the input end of the first communication pipeline can be controlled to be communicated with the output end of the hydrogen peroxide generating device or the output end of the hydrogen peroxide decomposing device, and the input end of the second communication pipeline is communicated with the circulating air duct and the output end of the second communication pipeline can be controlled to be communicated with the input end of the hydrogen peroxide generating device or the input end of the hydrogen peroxide decomposing device.
In the above technical scheme, the output end of the first communication pipeline is communicated with the working chamber forming the circulating air duct, and the input end of the second communication pipeline is communicated with the filtering chamber forming the circulating air duct.
In the above technical solution, the input end of the first communication pipeline is connected with a first valve component, and the first valve component can be controlled to be opened or closed so that the input end of the first communication pipeline is communicated with the output end of the hydrogen peroxide generating device or the output end of the hydrogen peroxide decomposing device;
the output end of the second communication pipeline is connected with a second valve component which can be controlled to be opened or closed so that the output end of the second communication pipeline is communicated with the input end of the hydrogen peroxide generating device or the input end of the hydrogen peroxide decomposing device.
In the technical scheme, the first valve component and the second valve component both comprise a one-way valve and a two-position three-way valve, wherein the two-position three-way valve is arranged on the first valve component;
the first valve component comprises a two-position three-way valve A, a one-way valve A1 and a one-way valve A2, wherein the two-position three-way valve A is provided with an output end A1, an input end A2 and an input end A3, the output end A1 is communicated with the first communication pipeline, the input end A2 is connected with the one-way valve A1 and is connected with the output end of the hydrogen peroxide generating device through the one-way valve A1, and the input end A3 is connected with the one-way valve A2 and is connected with the output end of the hydrogen peroxide decomposing device through the one-way valve A2;
the second valve component comprises a two-position three-way valve B and a one-way valve B, the output end of the second communication pipeline is connected with the one-way valve B and is connected with the two-position three-way valve B through the one-way valve B, the two-position three-way valve B is provided with an input end B1, an output end B2 and an output end B3, the input end B1 is communicated with the output end of the one-way valve B, the output end B2 is connected with the input end of the hydrogen peroxide generating device, and the output end B3 is connected with the input end of the hydrogen peroxide decomposing device.
In the technical scheme, the hydrogen peroxide generator further comprises a liquid storage tank, wherein the liquid storage tank is connected with the hydrogen peroxide generating device and is arranged outside the cabinet body.
In the technical scheme, the filtering chamber and the working chamber are distributed up and down in the height direction of the cabinet body, wherein;
an air outlet is arranged at the top of the cabinet body, a closed valve is arranged at the air outlet, and the closed valve can be controlled to be opened or closed so as to control the air outlet to be communicated or not communicated with the filtering cavity;
the front part of the cabinet body is provided with a glass door which can be controlled to be opened or closed so as to control the working chamber to be communicated or not communicated with the outside air.
In the technical scheme, the biosafety cabinet further comprises a hydrogen peroxide concentration sensor arranged in the circulating air duct and used for detecting the hydrogen peroxide concentration value in the circulating air duct;
the biosafety cabinet further comprises a visual operation panel arranged on the cabinet body, wherein the visual operation panel is used for monitoring the disinfection progress of the hydrogen peroxide generator on the biosafety cabinet and the concentration value of hydrogen peroxide in the cabinet body.
The second utility model provides a biosafety cabinet comprising:
the cabinet body is internally provided with a filtering chamber and a working chamber;
the channel is formed in the cabinet body, one end of the channel is communicated with the filtering chamber, the other end of the channel is communicated with the working chamber, and the filtering chamber, the working chamber and the channel which are communicated form a circulating air channel;
the fan is arranged in the circulating air duct and used for driving airflow to circulate in the circulating air duct;
the air inlet is formed at the bottom of the working chamber and is communicated with the channel;
the air outlet is formed at the top of the cabinet body and is communicated with the filtering chamber, and a closed valve is arranged at the air outlet and used for opening or closing the air outlet;
the filter is arranged in the filtering chamber, the filter comprises a first filter and a second filter, the first filter is arranged at the communication position of the exhaust outlet and the filtering chamber, and the second filter is arranged at the communication position of the filtering chamber and the working chamber;
a glass door provided at the front of the cabinet for opening or closing the working chamber;
a hydrogen peroxide generator arranged on the cabinet body, wherein the hydrogen peroxide generator comprises a hydrogen peroxide generating device and a hydrogen peroxide decomposing device, and the hydrogen peroxide generating device and the hydrogen peroxide decomposing device are communicated with the working chamber;
the hydrogen peroxide concentration sensor is used for detecting the concentration value of hydrogen peroxide in the cabinet body;
when the biosafety cabinet is in a working mode, the glass door is controlled to be opened, external air enters the working chamber and sequentially enters the filtering chamber through the air inlet and the channel, wherein one part of air is filtered by the first filter and then discharged to the outside, and the other part of air is filtered by the second filter and then discharged to the working chamber;
when the biosafety cabinet is in a sterilizing mode, the glass door and the air outlet are controlled to be closed, the hydrogen peroxide generating device is used for discharging hydrogen peroxide gas into the circulating air duct so that the hydrogen peroxide gas can be sterilized along with the circulating flow of the air flow of the circulating air duct, and the hydrogen peroxide decomposing device is used for adsorbing and decomposing the hydrogen peroxide gas in the interior of the cabinet body after sterilizing.
After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects:
1. according to the embodiment of the utility model, the hydrogen peroxide generator is integrated on the biosafety cabinet and matched with the circulating air duct in the biosafety cabinet, so that vaporized hydrogen peroxide can be diffused without dead angles, dead angle elimination can be performed inside the biosafety cabinet, the biosafety cabinet can be thoroughly eliminated, the elimination effect is better, and the inspection accuracy can be improved while the biosafety is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a schematic diagram of the front view of a biosafety cabinet of the utility model;
FIG. 2 is a schematic side view of the biosafety cabinet of the utility model;
FIG. 3 is a flow chart of a method of sterilizing a biosafety cabinet of the utility model;
wherein: 1-a cabinet body; 11-a filtration chamber; a 111-filter; 12-a working chamber; 13-channel; 14-a fan; 15-sealing a valve; 16-glass door; a 2-hydrogen peroxide generator; 21-a hydrogen peroxide generating device; 22-hydrogen peroxide decomposition means; 23-a liquid storage tank; 3-a first communication pipeline; 4-a second communication pipeline; 5-a first valve component; 51-two-position three-way valve a; 52-one-way valve A1; 53-one-way valve A2; 6-a second valve component; 61-two-position three-way valve B; 62-one-way valve B; 7-a hydrogen peroxide concentration sensor;
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.
In the related art, when the biosafety cabinet is killed, the hydrogen peroxide generator is required to be connected to the biosafety cabinet, and the connection is complex in operation, inconvenient and the working efficiency of test personnel is reduced. According to the embodiment of the utility model, the hydrogen peroxide generator is integrated on the biosafety cabinet and matched with the circulating air duct in the biosafety cabinet, so that vaporized hydrogen peroxide can be diffused without dead angles, dead angle elimination can be performed inside the biosafety cabinet, the biosafety cabinet can be thoroughly eliminated, the elimination effect is better, and the inspection accuracy can be improved while the biosafety is ensured.
In order to solve the above technical problems, the present embodiment provides a biosafety cabinet.
The technical solutions of the present embodiment are described in detail below with reference to fig. 1 to 3, and the following implementation manners and embodiments may be combined with each other without conflict.
In one aspect, as shown in fig. 1 and 2, the present embodiment proposes a biosafety cabinet, including:
the cabinet body 1, wherein the cabinet body 1 is provided with a filter chamber 11 and a working chamber 12 which are adjacently arranged, the filter chamber 11 is provided with a filter 111 and a static pressure box (the drawing is not marked), and the gas flowing through the filter chamber 11 can flow into the working chamber 12 after being filtered by the filter 111;
a passage 13, one end of which is communicated with the filter chamber 11, the other end of which is communicated with the working chamber 12, and the communicated passage 13, the filter chamber 11 and the working chamber 12 form a circulating air channel;
the fan 14 is arranged in the circulating air duct and used for driving the air flow to circulate in the circulating air duct;
a hydrogen peroxide generator 2 provided on the cabinet, the hydrogen peroxide generator 2 including a hydrogen peroxide generating device 21 and a hydrogen peroxide decomposing device 22;
the output end of the first communication pipeline 3 is communicated with a circulating air channel and the input end of the first communication pipeline 3 can be controlled to be communicated with the output end of the hydrogen peroxide generating device 21 or the output end of the hydrogen peroxide decomposing device 22, the input end of the second communication pipeline 4 is communicated with the circulating air channel and the output end of the second communication pipeline 4 can be controlled to be communicated with the input end of the hydrogen peroxide generating device 21 or the input end of the hydrogen peroxide decomposing device 22, an air pump is arranged in the filtering cavity 11, and the input end, namely the air inlet end, of the second communication pipeline 4 is connected with the air pump.
Specifically, when the interior of the cabinet body 1 needs to be killed, the input end of the first communication pipeline 3 is communicated with the hydrogen peroxide generating device 21, the output end of the second communication pipeline 4 is communicated with the input end of the hydrogen peroxide generating device 21, and meanwhile, the hydrogen peroxide generating device 21, the fan 14 and the air pump are started, at this time, air flow in the interior of the cabinet body 1 circulates in the circulating air duct, vaporized hydrogen peroxide generated by the hydrogen peroxide generating device 21 is conveyed into the working chamber 12 through the first communication pipeline 3 and circulates in the circulating air duct, and therefore the interior of the cabinet body 1 is killed in an omnibearing manner.
According to the embodiment of the utility model, the hydrogen peroxide generator 2 is integrated on the biosafety cabinet and matched with the circulating air channel in the biosafety cabinet, so that vaporized hydrogen peroxide can be diffused without dead angles, dead angle elimination can be performed in the biosafety cabinet, the elimination effect is better, and the detection accuracy is improved while the biosafety is ensured. Meanwhile, the hydrogen peroxide decomposition device is arranged to collect and treat the hydrogen peroxide gas in the cabinet body 1, and the products after the hydrogen peroxide gas is treated by the hydrogen peroxide decomposition device are oxygen and water, so that the decomposed products are harmless to the environment and human body.
In any of the above embodiments, as shown in fig. 2, the output end of the above-mentioned first communication pipe 3 communicates with the working chamber 12 constituting the circulation duct, and the input end of the above-mentioned second communication pipe 4 communicates with the filter chamber 11 constituting the circulation duct. In the embodiment of the utility model, the output end of the first communication pipeline 3 is communicated with the working chamber 12, and the second communication pipeline 4 is communicated with the filtering chamber 11, so that the flow path of hydrogen peroxide gas in the biosafety cabinet can be increased, and the sterilizing effect on the biosafety cabinet and the degradation effect on the hydrogen peroxide gas after sterilizing are improved.
In any of the above embodiments, the input end of the first communication pipeline 3 is connected to the first valve assembly 5, and the first valve assembly 5 can be controlled to be opened or closed so that the input end of the first communication pipeline 3 is communicated with the output end of the hydrogen peroxide generating device 21 or the output end of the hydrogen peroxide decomposing device 22;
the output end of the second communication pipeline 4 is connected with a second valve assembly 6, and the second valve assembly 6 can be controlled to be opened or closed so that the output end of the second communication pipeline 4 is communicated with the input end of the hydrogen peroxide generating device 21 or the input end of the hydrogen peroxide decomposing device 22.
In the embodiment of the utility model, the self-localization sterilization control of the biosafety cabinet can be realized by arranging the first valve component 5 and the second valve component 6.
In any of the above embodiments, the first valve component 5 and the second valve component 6 each comprise a one-way valve and a two-position three-way valve.
In any of the above embodiments, as shown in fig. 2, the first valve assembly 5 includes a two-position three-way valve a51, a one-way valve a152 and a one-way valve a253, the two-position three-way valve a51 has an output end A1, an input end A2 and an input end A3, the output end A1 is connected to the first communication pipe 3, the input end A2 is connected to the one-way valve a152 and is connected to the output end of the hydrogen peroxide generating device 21 through the one-way valve a152, and the input end A3 is connected to the one-way valve a253 and is connected to the output end of the hydrogen peroxide decomposing device 22 through the one-way valve a 253;
the second valve assembly 6 comprises a two-position three-way valve B61 and a one-way valve B62, wherein the output end of the second communication pipeline 4 is connected with the one-way valve B61 and is connected with the two-position three-way valve B61 through the one-way valve B61, the two-position three-way valve B61 is provided with an input end B1, an output end B2 and an output end B3, the input end B1 is communicated with the output end of the one-way valve B62, the output end B2 is connected with the input end of the hydrogen peroxide generating device 21, and the output end B3 is connected with the input end of the hydrogen peroxide decomposing device 22.
In any of the above embodiments, the hydrogen peroxide generator 2 further includes a liquid storage tank 23, where the liquid storage tank 23 is connected with the hydrogen peroxide generating device 21 and the liquid storage tank 23 is disposed outside the cabinet body 1, so that the liquid storage tank 23 is conveniently replaced, i.e. placed at a position where personnel outside the biosafety cabinet can conveniently operate.
In any of the above embodiments, the filter chamber 11 and the working chamber 12 are distributed up and down in the height direction of the cabinet 1, wherein;
the top of the cabinet body 1 is provided with an air outlet, the air outlet is provided with a closed valve 15, and the closed valve 15 can be controlled to be opened or closed so as to control the air outlet to be communicated or not communicated with the filtering chamber 11;
the front part of the cabinet 1 is provided with a glass door 16, and the glass door 16 can be controlled to be opened or closed to control the working chamber 12 to be communicated with or not communicated with the outside air.
The air outlet and the glass door in the embodiment of the utility model can be controlled to be opened and closed, and an air pipe is not required to be installed to seal the air outlet when the inside of the cabinet body is killed, so that the operation is more convenient.
In any of the above embodiments, in order to ensure the disinfection effect inside the cabinet body 1 and protect the safety of the laboratory staff, the biosafety cabinet in this embodiment further includes a hydrogen peroxide concentration sensor 7 disposed in the circulation duct, for detecting the hydrogen peroxide concentration value in the circulation duct.
In any of the above embodiments, the hydrogen peroxide concentration sensor 7 is provided in the working chamber 12.
In any of the above embodiments, the biosafety cabinet further includes a visual operation panel disposed on the cabinet body, the visual operation panel being configured to monitor a sterilization progress of the biosafety cabinet by the hydrogen peroxide generator and a concentration value of hydrogen peroxide in the cabinet body. The disinfection program is operated through the visual operation panel, the disinfection progress and the real-time concentration of hydrogen peroxide are monitored, and the operation is more convenient.
The following describes the working procedure of the bio-installation cabinet according to the embodiment of the present utility model with reference to fig. 1 and 2:
1. after the safety cabinet is electrified, when the glass door is in a closed state, the normally open point 1 and the normally open point 2 are closed, the normally open point 3.4 is disconnected, and the wind speed of the fan after the fan 14 is started is 50% of that in normal operation. At this time, the illuminating lamp and the ultraviolet lamp (the biological safety cabinet is also provided with the illuminating lamp and the ultraviolet lamp, the figure number is not marked in the figure) can be normally turned on, and the illuminating lamp is interlocked with the ultraviolet lamp.
2. When the normally open points 1.2.3.4 are in the off state, the height of the glass door of the biosafety cabinet is too low to give an alarm, and at the moment, the illuminating lamp can be normally turned on and the ultraviolet lamp cannot be turned on.
3. When the normally open point 1.2.4 is in an open state and the normally open point 3 is in a closed state, the fan 14 runs at a set rotating speed in a normal working state of the biosafety cabinet, the illuminating lamp can be turned on, and the ultraviolet lamp cannot be turned on.
4. When the normally open point 1.2 is disconnected and the normally open point 3.4 is closed, the illuminating lamp is closed, the fan operates normally, and the height of the glass door is reported to be too high for alarm.
The sterilization and degradation process of the biosafety cabinet will be described with reference to fig. 1 and 2:
1. when the kill program is initiated, the glass door must be in a closed state, otherwise the kill program cannot be initiated.
2. After the disinfection program is started, the airtight valve 15 of the air outlet is closed, the one-way valve A152 and the one-way valve B62 are electrified, the two-position three-way valve A51 and the two-position three-way valve B61 are electrified, and the air pump starts to work after 5 seconds, and at the moment, the biological safety cabinet fan 14 runs at a low speed (50%). The hydrogen peroxide generating apparatus 21 starts to operate. The kill time was 20 minutes.
3. After the sterilization is finished for 20 minutes, the check valve A152 is powered off, the check valve A253 is powered on, the two-position three-way valve A51 and the two-position three-way valve B61 are powered off, the hydrogen peroxide decomposition device 22 starts to work, when the concentration of hydrogen peroxide in the cabinet 1 is detected to be 1ppm, the hydrogen peroxide decomposition device 22 stops working, the air pump stops working, the check valve A253 and the check valve B62 are powered off, and the air blower 14 stops working and then the sealing valve 15 is opened. The buzzer alarms and prompts for 5 seconds, and the disinfection process is finished.
4. During the sterilization process, if the glass door is opened, an alarm is triggered, at which time the sterilization process is automatically stopped and the hydrogen peroxide decomposition device 22 is opened. The specification is that in manual mode, the disinfection program or degradation program can be manually opened when the glass door is opened. At this point the disinfection and degradation procedure was not timed.
The embodiment of the utility model also provides a biosafety cabinet, which comprises:
the cabinet body is internally provided with a filtering chamber and a working chamber;
the channel is formed in the cabinet body, one end of the channel is communicated with the filtering chamber, the other end of the channel is communicated with the working chamber, and the filtering chamber, the working chamber and the channel which are communicated form a circulating air channel;
the fan is arranged in the circulating air duct, specifically, the fan is arranged in the filtering chamber and used for driving air flow to circulate in the circulating air duct;
the air inlet is formed at the bottom of the working chamber and is communicated with the channel;
the air outlet is formed at the top of the cabinet body and is communicated with the filtering chamber, and a closed valve is arranged at the air outlet and used for opening or closing the air outlet;
the filter is arranged in the filtering chamber and comprises a first filter and a second filter, wherein the first filter is arranged at the communication position of the air outlet and the filtering chamber, and the second filter is arranged at the communication position of the filtering chamber and the working chamber;
a glass door provided at the front of the cabinet for opening or closing the working chamber;
the hydrogen peroxide generator is arranged on the cabinet body, and the hydrogen peroxide generator comprises a hydrogen peroxide generating device and a hydrogen peroxide decomposing device which are communicated with the working chamber;
and the hydrogen peroxide concentration sensor is used for detecting the concentration value of the hydrogen peroxide in the cabinet body.
When the biosafety cabinet is in a working mode, the fan is started, the glass door is controlled to be opened, specifically, the opening height of the glass door is 20cm-25cm, external air can enter the working chamber through the opening gap of the glass door and sequentially enter the filtering chamber through the air inlet and the channel, wherein one part of air is filtered by the first filter and then discharged to the outside, and the other part of air is filtered by the second filter and then discharged to the working chamber;
when the biosafety cabinet is in a sterilizing mode, the fan is started (at the moment, the biosafety cabinet fan 14 runs at a low speed by 50%), the glass door and the air outlet are controlled to be closed, the hydrogen peroxide generating device is started to generate hydrogen peroxide gas, the hydrogen peroxide gas is discharged into the circulating air duct to enable the hydrogen peroxide gas to flow circularly along with the air flow of the circulating air duct so as to perform omnibearing sterilization on the inner space of the cabinet body, when the sterilization is performed for a preset time (preferably, the sterilization time is 20 minutes), the buzzer alarms, the hydrogen peroxide decomposing device works to adsorb the hydrogen peroxide gas in the cabinet body and decompose the hydrogen peroxide gas into water and oxygen, and when the concentration of hydrogen peroxide in the cabinet body 1 is detected to be 1ppm, the hydrogen peroxide decomposing device 22 stops working, and the air pump stops working.
In another aspect, there is provided a method for sterilizing a biosafety cabinet as shown in fig. 3, the sterilization method being applied to the biosafety cabinet as mentioned above, wherein the sterilization method includes: after the hydrogen peroxide sterilizing program is started, judging whether the starting condition of the hydrogen peroxide generating device is met;
if the starting condition is met, the hydrogen peroxide generating device is started to kill the inner part of the cabinet body for a preset time t;
and if the starting condition is not met, sending out an alarm signal.
In any of the above embodiments, the method of determining whether the hydrogen peroxide generating apparatus start-up condition is satisfied includes:
judging whether an air outlet and a glass door on the cabinet body are closed, if the air outlet and the glass door are in a closed state, normally starting the hydrogen peroxide generating device, and if the air outlet and/or the glass door are in an open state, sending out an alarm signal, wherein the hydrogen peroxide generating device is not started.
In any of the above embodiments, continuously detecting the hydrogen peroxide concentration in the cabinet and judging whether the hydrogen peroxide concentration value satisfies the first preset concentration value c1 within the preset time period t when the hydrogen peroxide generating device is turned on;
if yes, the hydrogen peroxide generating device continuously operates until the operation time reaches a preset time t;
if not, an alarm signal is sent, and the hydrogen peroxide generating device is closed.
In any of the above embodiments, after the operation time of the hydrogen peroxide generating device reaches the preset time t, the hydrogen peroxide generating device is turned off, and the hydrogen peroxide decomposing device is started to absorb and decompose the hydrogen peroxide gas inside the cabinet.
In any of the above embodiments, the biosafety cabinet according to the embodiment of the present utility model may further perform emergency disinfection on a space in which the cabinet body 1 is located, that is, when the hydrogen peroxide generating device operates within the preset time period t, if the glass door is opened, the hydrogen peroxide generating device is closed, and the hydrogen peroxide decomposing device is started.
In any of the above embodiments, when the hydrogen peroxide decomposition device is operated, the hydrogen peroxide concentration value inside the cabinet is continuously detected, and if the hydrogen peroxide concentration value inside the cabinet is smaller than the second preset concentration value c2, the hydrogen peroxide decomposition device is turned off.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (7)
1. A biosafety cabinet comprising:
the cabinet body (1), the cabinet body (1) is internally provided with a filter chamber (11) and a working chamber (12) which are adjacently arranged, the filter chamber (11) is internally provided with a filter (111), and the gas flowing through the filter chamber (11) can flow into the working chamber (12) after being filtered by the filter (111);
the channel (13) is communicated with the filtering chamber (11) at one end and the working chamber (12) at the other end, and the communicated channel (13), the filtering chamber (11) and the working chamber (12) form a circulating air channel;
the fan (14) is arranged in the circulating air duct and used for driving air flow to circulate in the circulating air duct;
a hydrogen peroxide generator (2) arranged on the cabinet body, wherein the hydrogen peroxide generator (2) comprises a hydrogen peroxide generating device (21) and a hydrogen peroxide decomposing device (22);
the hydrogen peroxide decomposition device comprises a first communication pipeline (3) and a second communication pipeline (4), wherein the output end of the first communication pipeline (3) is communicated with the circulating air channel and the input end of the first communication pipeline (3) can be controlled to be communicated with the output end of the hydrogen peroxide generation device (21) or the output end of the hydrogen peroxide decomposition device (22), and the input end of the second communication pipeline (4) is communicated with the circulating air channel and the output end of the second communication pipeline (4) can be controlled to be communicated with the input end of the hydrogen peroxide generation device (21) or the input end of the hydrogen peroxide decomposition device (22).
2. Biosafety cabinet according to claim 1, characterized in that the output end of the first communication line (3) communicates with a working chamber (12) constituting the circulation duct, and the input end of the second communication line (4) communicates with a filter chamber (11) constituting the circulation duct.
3. A biosafety cabinet according to claim 2, characterized in that,
the input end of the first communication pipeline (3) is connected with a first valve component (5), and the first valve component (5) can be controlled to be opened or closed so as to enable the input end of the first communication pipeline (3) to be communicated with the output end of the hydrogen peroxide generating device (21) or the output end of the hydrogen peroxide decomposing device (22);
the output end of the second communication pipeline (4) is connected with a second valve component (6), and the second valve component (6) can be controlled to be opened or closed so that the output end of the second communication pipeline (4) is communicated with the input end of the hydrogen peroxide generating device (21) or the input end of the hydrogen peroxide decomposing device (22).
4. A biosafety cabinet according to claim 3, characterized in that the first valve assembly (5) and the second valve assembly (6) each comprise a one-way valve and a two-position three-way valve, wherein;
the first valve assembly (5) comprises a two-position three-way valve A (51), a one-way valve A1 (52) and a one-way valve A2 (53), the two-position three-way valve A (51) is provided with an output end A1, an input end A2 and an input end A3, the output end A1 is communicated with the first communication pipeline (3), the input end A2 is connected with the one-way valve A1 (52) and is connected with the output end of the hydrogen peroxide generating device (21) through the one-way valve A1 (52), and the input end A3 is connected with the one-way valve A2 (53) and is connected with the output end of the hydrogen peroxide decomposing device (22) through the one-way valve A2 (53);
the second valve assembly (6) comprises a two-position three-way valve B (61) and a one-way valve B (62), the output end of the second communication pipeline (4) is connected with the one-way valve B (62) and is connected with the two-position three-way valve B (61) through the one-way valve B (62), the two-position three-way valve B (61) is provided with an input end B1, an output end B2 and an output end B3, the input end B1 is communicated with the output end of the one-way valve B (62), the output end B2 is connected with the input end of the hydrogen peroxide generating device (21), and the output end B3 is connected with the input end of the hydrogen peroxide decomposing device (22).
5. Biosafety cabinet according to any of claims 1-4, characterized in that the filter chamber (11) and the working chamber (12) are distributed up and down in the height direction of the cabinet body (1), wherein;
an air outlet is formed in the top of the cabinet body (1), a closed valve (15) is arranged at the air outlet, and the closed valve (15) can be controlled to be opened or closed so as to control the air outlet to be communicated or not communicated with the filtering chamber (11);
the front part of the cabinet body (1) is provided with a glass door (16), and the glass door (16) can be controlled to be opened or closed to control the working chamber (12) to be communicated or not communicated with the outside air.
6. Biosafety cabinet according to any of claims 1-4, characterized in that the biosafety cabinet further comprises a hydrogen peroxide concentration sensor (7) arranged in the circulation duct for detecting a hydrogen peroxide concentration value in the circulation duct;
the biological safety cabinet further comprises a visual operation panel arranged on the cabinet body, wherein the visual operation panel is used for monitoring the disinfection progress of the hydrogen peroxide generator on the biological safety cabinet and the concentration value of hydrogen peroxide in the cabinet body.
7. A biosafety cabinet comprising:
the cabinet body is internally provided with a filtering chamber and a working chamber;
the channel is formed in the cabinet body, one end of the channel is communicated with the filtering chamber, the other end of the channel is communicated with the working chamber, and the filtering chamber, the working chamber and the channel which are communicated form a circulating air channel;
the fan is arranged in the circulating air duct and used for driving airflow to circulate in the circulating air duct;
the air inlet is formed at the bottom of the working chamber and is communicated with the channel;
the air outlet is formed at the top of the cabinet body and is communicated with the filtering chamber, and a closed valve is arranged at the air outlet and used for opening or closing the air outlet;
the filter is arranged in the filtering chamber, the filter comprises a first filter and a second filter, the first filter is arranged at the communication position of the exhaust outlet and the filtering chamber, and the second filter is arranged at the communication position of the filtering chamber and the working chamber;
a glass door provided at the front of the cabinet for opening or closing the working chamber;
a hydrogen peroxide generator arranged on the cabinet body, wherein the hydrogen peroxide generator comprises a hydrogen peroxide generating device and a hydrogen peroxide decomposing device, and the hydrogen peroxide generating device and the hydrogen peroxide decomposing device are communicated with the working chamber;
the hydrogen peroxide concentration sensor is used for detecting the concentration value of hydrogen peroxide in the cabinet body;
when the biosafety cabinet is in a working mode, the glass door is controlled to be opened, external air enters the working chamber and sequentially enters the filtering chamber through the air inlet and the channel, wherein one part of air is filtered by the first filter and then discharged to the outside, and the other part of air is filtered by the second filter and then discharged to the working chamber;
when the biosafety cabinet is in a sterilizing mode, the glass door and the air outlet are controlled to be closed, the hydrogen peroxide generating device is used for discharging hydrogen peroxide gas into the circulating air duct so that the hydrogen peroxide gas can be sterilized along with the circulating flow of the air flow of the circulating air duct, and the hydrogen peroxide decomposing device is used for adsorbing and decomposing the hydrogen peroxide gas in the interior of the cabinet body after sterilizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321040037.8U CN219849665U (en) | 2023-05-04 | 2023-05-04 | Biological safety cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321040037.8U CN219849665U (en) | 2023-05-04 | 2023-05-04 | Biological safety cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219849665U true CN219849665U (en) | 2023-10-20 |
Family
ID=88336624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321040037.8U Active CN219849665U (en) | 2023-05-04 | 2023-05-04 | Biological safety cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219849665U (en) |
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2023
- 2023-05-04 CN CN202321040037.8U patent/CN219849665U/en active Active
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