CN103127967B - Photocatalyst sterilization biosafety cabinet - Google Patents
Photocatalyst sterilization biosafety cabinet Download PDFInfo
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- CN103127967B CN103127967B CN201310086551.XA CN201310086551A CN103127967B CN 103127967 B CN103127967 B CN 103127967B CN 201310086551 A CN201310086551 A CN 201310086551A CN 103127967 B CN103127967 B CN 103127967B
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Abstract
The invention relates to a photocatalyst sterilization biosafety cabinet, and belongs to the technical field of experimental equipment. The biosafety cabinet comprises a shell, wherein the shell is internally provided with an operation chamber, a decontamination chamber and an air circulation system; the decontamination chamber is arranged on the operation chamber, and the air circulation system is used for circulating air between the operation chamber and the decontamination chamber; the air circulation system comprises a fan arranged on the air inlet of the decontamination chamber, and the decontamination chamber comprises a contamination particulate matter generating part and a contamination particle matter decomposing part; and the contamination particulate matter generating part and the contamination particle matter decomposing part are successively arranged on an aeration port of the fan. The biosafety cabinet provided by the invention can sterilize and disinfect, and can purify air.
Description
Technical field
The present invention relates to a kind of photocatalyst sterilization biosafety cabinet, particularly relate to a kind of Biohazard Safety Equipment that can purify air, belong to technical field of experiment equipment.
Background technology
Fig. 1 is the side schematic view of Biohazard Safety Equipment of the prior art.As shown in Figure 1, described Biohazard Safety Equipment comprises the housing 1 be arranged on support 30, and the lower end of four legs of support 30 is provided with castor 31.Housing 1 comprises front shrouding 25, front shroud 26, Zuo Bi, You Bi, roof and diapire, portion is provided with an air dispersion plate 27 within the case 1, the first half of front shroud 26, left wall, the first half of right wall, roof and air dispersion plate form a upper space, the latter half of front shrouding 25, left wall, the latter half of right wall and diapire form a lower space, clean room 2 is provided with in upper space, operating room 3 is provided with in lower space, front shrouding 25 can movablely also can be contracted in upper space, and the base plate 29 of the lower end in operating room is provided with pore.Clean room is connected after the structure that formed with operating room, the left side and the right side form negative pressure channel, and the platform of the air inlet of clean room is laid blower fan 4.The top of clean room is provided with exhaust outlet, is arranged with exhaust-air filter 10 at exhaust outlet.Main filter 11 is set between clean room 2 and operating room 3.In upper space, be provided with the motor 24 of shrouding 25 before driving, be arranged with illuminating lamp 28 at front shroud 26.In order to sterilization, at indoor location UV (ultraviolet) lamp 32 that works, namely UV (ultraviolet) lamp is utilized to carry out irradiating to kill the organic compound in air or mushroom, but sterilization is not thorough, and meanwhile, Ultraviolet radiation also makes the oxygen in air become ozone, when the concentration over-standard of the ozone in air, ozone is then an invisible killer, and the respiratory tract of its intense stimulus people, causes abscess of throat, cough uncomfortable in chest, causes bronchitis and pulmonary emphysema; Cause the neurotoxic of people, dizziness headache, visual impairment, to be losing one's memory; Destruction is played to the vitamin E in human body skin, cause the skin of people wrinkling, there is blackspot; Also can destroy the immunity function of human body, bring out lymphocyte chromosome pathology, accelerate old and feeble, cause pregnant woman to have a deformed child, the ozone that therefore Biohazard Safety Equipment is discharged can cause the secondary pollution to air, and ozone can cause some experiment material Strong oxdiative simultaneously.
Summary of the invention
For overcoming in prior art existing shortcoming, goal of the invention of the present invention is to provide a kind of photocatalyst sterilization biosafety cabinet, described Biohazard Safety Equipment can sterilizing, sterilization, and secondary pollution can not be caused to air.
For realizing described goal of the invention, the invention provides a kind of Biohazard Safety Equipment, described safety cabinet comprises housing, operating room is provided with in housing, clean room and air circulation system, wherein clean room is arranged on operating room, air circulation system is used for circulating air between operating room and clean room, air circulation system comprises the blower fan being arranged on clean room's air inlet, it is characterized in that, clean room comprises contaminant particle material production part and contaminant particle substance decomposition parts, described contaminant particle material production part and contaminant particle substance decomposition parts are successively set on the blowing mouth place of blower fan.
Preferably, described dye thing particle matter production part comprises the first ultraviolet lamp, and the UV-irradiation that the organic pollution in air sends through ultraviolet lamp forms contaminant particle material.
Preferably, contaminant particle substance decomposition parts comprise the second ultraviolet lamp and are arranged on the photocatalyst layer with multiple cellular through hole of ultraviolet lamp both sides, and the surface of the cellular through hole of described photocatalyst layer is coated with titanium dioxide granule.
Preferably, the top of clean room is provided with exhaust outlet, under exhaust outlet, is disposed with the first ozone decomposed device and exhaust-air filter.
Preferably, between clean room and operating room, set gradually main filter and the second ozone decomposed device.
Preferably, described first ozone decomposed device and the second ozone decomposed utensil have multiple cellular through hole, the surface of each through hole are coated with manganese dioxide particle.
Compared with prior art, Biohazard Safety Equipment provided by the invention can sterilization, sterilization, and odorless is pollution-free.
Figure of description
Fig. 1 is the side schematic view of Biohazard Safety Equipment of the prior art;
Fig. 2 is the front schematic view of Biohazard Safety Equipment provided by the invention;
Fig. 3 is the side schematic view of Biohazard Safety Equipment provided by the invention;
Fig. 4 is the circuit diagram of the control system of Biohazard Safety Equipment provided by the invention.
Detailed description of the invention
Describe the present invention in detail below in conjunction with accompanying drawing, identical Reference numeral represents identical or similar parts.
Fig. 2 is the schematic diagram of Biohazard Safety Equipment provided by the invention.Fig. 3 is the side schematic view of Biohazard Safety Equipment provided by the invention.As shown in Figures 2 and 3, described Biohazard Safety Equipment comprises the housing 1 be arranged on support 30, housing comprises front shrouding 26 (adopting flexible glass door in the present invention), front shroud 25, Zuo Bi, right wall, roof and diapire, portion is provided with an air dispersion plate 27 within the case 1, front shroud 26, the first half of left wall, the first half of right wall, roof and air dispersion plate form a upper space, front shrouding 25, the latter half of left wall, the latter half of right wall and diapire form a lower space, clean room 2 is provided with in upper space, operating room 3 is provided with in lower space, front shrouding 25 can movablely also can be contracted in upper space, lower end in operating room is provided with pore.Clean room and operating room are connected after the structure that formed, the left side and form negative pressure channel between the right side and housing, blower fan 4 laid by the platform of the air inlet of clean room 4, the exhaust outlet place of blower fan 4 is provided with sterilization and disinfection device 5, described sterilization and disinfection device 5 comprises contaminant particle material production part and contaminant particle substance decomposition parts, described contaminant particle material production part comprises the first ultraviolet lamp 6, and the UV-irradiation that the organic pollution in air sends through ultraviolet lamp 6 forms contaminant particle material.Contaminant particle substance decomposition parts comprise the second ultraviolet lamp 7 and are arranged on the photocatalyst layer 8 and 9 with multiple cellular through hole of ultraviolet lamp both sides, and the surface of the cellular through hole of described photocatalyst layer is coated with titanium dioxide granule.Photocatalyst layer 9 air outlet place be provided with distinguished and admirable guide plate 14, the place of the left wall of clean room touching the air outlet of reactor 9 corresponding with light is provided with distinguished and admirable guide way 15, described distinguished and admirable guide way is top is that semicircle is spherical, and bottom is columniform combination.The top of clean room is provided with exhaust outlet, under exhaust outlet, is disposed with the first ozone decomposed device 12 and exhaust-air filter 10.Between clean room 2 and operating room 3, set gradually lower main filter 11 and the second ozone decomposed device 13, described ozone decomposed utensil has multiple cellular through hole, the surface of each through hole is coated with manganese dioxide particle.
Still as shown in Figure 2, control system provided by the invention comprises processor 21, display 22, alarm 23 and power supply 20 and differential pressure pickup assembly (wind pressure sensor) 16, differential pressure pickup (wind pressure sensor) 18 and differential pressure pickup (wind pressure sensor) 17.Wherein, two sensors of differential pressure pickup assembly 16 are respectively arranged with the upper and lower of exhaust-air filter 12 and the first ozone wind device, for detecting the blast of upper filter 10 upstream and the difference of extraneous blast, leeway are converted to voltage u
1be input to processor 21; Leeway, for detecting the main blast of filter 13 upstream and the leeway in downstream, is converted to voltage u by differential pressure pickup 17
2be input to processor 21.Processor is according to voltage u
1situation of change judge whether exhaust-air filter 12 lost efficacy, if lost efficacy, processor 21 can send a signal to alarm 23, and prompting user exhaust-air filter lost efficacy, and user changes exhaust-air filter in time.Processor 21 is according to voltage u
2situation of change judge whether main filter lost efficacy, if lost efficacy, processor can send a signal to alarm, and householder's filter failure is used in prompting, user's more change owner filter in time.
Fig. 4 is the circuit diagram of the control system of Biohazard Safety Equipment provided by the invention.As shown in Figure 4, control system provided by the invention also comprises button AN1-AN6, upper limit Hall switch KH1 and lower limit Hall switch KL1, and wherein button AN1-AN6 is arranged on the front shroud of housing.Upper limit Hall switch KH1 is arranged on the upper end of operating room, and lower limit Hall switch KL1 is arranged on the lower end of operating room.The lower end of glass retractable door is provided with magnet steel, and when door closes operating room, magnet steel is aimed at lower limit Hall switch KL1, and KL1 closes.Processor 21 comprises controller, ozone first threshold values comparator OP1, first photoelectrical coupler PE1, ozone second threshold values comparator OP2, second photoelectrical coupler PE2, ozone the 3rd threshold values comparator OP3, 3rd photoelectrical coupler PE3, ozone the 4th threshold values comparator OP4, 4th photoelectric coupling PE4, for driving the first driver of the first relay J 1, for driving the second driver of the second relay J 2, for driving the 3rd driver of the 3rd relay J 3, for driving the 3rd driver of the 3rd relay J 3, for driving the four-wheel drive device of the 4th relay J 4, for driving the drive circuit of alarm and multiple relay.
Wherein, threshold values comparator OP1 to OP4 is operational amplifier.The in-phase end of the first threshold values comparator OP1 inputs the first threshold voltage, this voltage is obtained by power supply Ec dividing potential drop by RW1, the output of anti-phase termination first differential pressure pickup 16, the output of the first threshold values comparator OP1 through the first photoelectrical coupler PE1 in succession in controller.The end of oppisite phase of the second threshold values comparator OP2 inputs the second threshold voltage, this voltage is obtained by power supply Ec dividing potential drop by RW2, the output of homophase termination first differential pressure pickup 16, the output of the second threshold values comparator OP2 through the second photoelectrical coupler PE2 in succession in controller.In-phase end input the 3rd threshold voltage of the 3rd threshold values comparator OP3, this voltage is obtained by power supply Ec dividing potential drop by RW3, the output of anti-phase termination second differential pressure pickup 17, the output of the 3rd threshold values comparator OP1 through the 3rd photoelectrical coupler PE3 in succession in controller.End of oppisite phase input the 4th threshold voltage of the 4th threshold values comparator OP4, this voltage is obtained by power supply Ec dividing potential drop by RW4, the output of positive termination second differential pressure pickup 17, the output of the 4th threshold values comparator OP4 through the 4th photoelectrical coupler PE4 in succession in controller.
First driver comprises transistor TR1, resistance R1 and diode D1, and wherein the base stage TR1 of transistor is connected to controller through resistance R1, grounded emitter, and colelctor electrode connects the positive pole of diode D1.The negative pole of diode D1 connects power supply, and the two ends of diode D1 and the line bag of relay J 1 are in parallel.The first end of the power supply of one termination 220V of the normally opened contact of relay J 1, a terminal of another termination ultraviolet lamp 6, another terminal of ultraviolet lamp 6 connects the second end of the power supply of 220V.When user needs ultraviolet lamp 6 luminous, when pressing AN1, processor is checked through the signal pressing AN1, a high potential signal is provided to the base stage of transistor TR1, transistor turns, the line of the relay J 1 be connected with its colelctor electrode is surrounded by electric current to be passed through, and its normally opened contact closes, and ultraviolet lamp 6 connects 220V power supply and luminous; When user does not need ultraviolet lamp 6 luminous, when will press AN1 again, processor is checked through the signal pressing AN1, a low-potential signal is provided to the base stage of transistor TR1, transistor cutoff, the line bag of the relay J 1 be connected with its colelctor electrode does not have electric current to pass through, and its normally opened contact disconnects, and ultraviolet lamp 6 and 220V power supply disconnect.
Second driver comprises transistor TR2, resistance R2 and diode D2, and wherein the base stage TR2 of transistor is connected to controller through resistance R2, grounded emitter, and colelctor electrode connects the positive pole of diode D2.The negative pole of diode D2 connects power supply, and the two ends of diode D2 and the line bag of relay J 2 are in parallel.The first end of the power supply of one termination 220V of the normally opened contact of relay J 2, a terminal of another termination ultraviolet lamp 7, another terminal of ultraviolet lamp 7 connects the second end of the power supply of 220V.When user needs ultraviolet lamp 7 luminous, when pressing AN2, processor is checked through the signal pressing AN2, a high potential signal is provided to the base stage of transistor TR2, transistor turns, the line of the relay J 2 be connected with its colelctor electrode is surrounded by electric current to be passed through, and its normally opened contact closes, and ultraviolet lamp 7 connects 220V power supply and luminous; When user does not need ultraviolet lamp 7 luminous, when will press AN2 again, processor is checked through the signal pressing AN2, a low-potential signal is provided to the base stage of transistor TR2, transistor cutoff, the line bag of the relay J 2 be connected with its colelctor electrode does not have electric current to pass through, and its normally opened contact disconnects, and ultraviolet lamp 7 and 220V power supply disconnect.
3rd driver comprises transistor TR3, resistance R3 and diode D3, and wherein the base stage TR3 of transistor is connected to controller through resistance R3, grounded emitter, and colelctor electrode connects the positive pole of diode D3.The negative pole of diode D3 connects power supply, and the two ends of diode D3 and the line bag of relay J 3 are in parallel.The first end of the power supply of one termination 220V of the normally opened contact of relay J 3, a terminal of another termination illuminating lamp 28, another terminal of illuminating lamp 28 connects the second end of the power supply of 220V.When user needs illuminating lamp 28 luminous, when pressing AN3, processor is checked through the signal pressing AN3, a high potential signal is provided to the base stage of transistor TR3, transistor turns, the line of the relay J 3 be connected with its colelctor electrode is surrounded by electric current to be passed through, and its normally opened contact closes, and 220V power supply and luminous connected by illuminating lamp 28; When user does not need illuminating lamp 28 luminous, press AN3 again, processor is checked through the signal pressing AN3, a low-potential signal is provided to the base stage of transistor TR3, transistor cutoff, the line bag of the relay J 3 be connected with its colelctor electrode does not have electric current to pass through, and its normally opened contact disconnects, and illuminating lamp 28 and 220V power supply disconnect.
Four-wheel drive device comprises transistor TR4, resistance R4 and diode D4, and wherein the base stage TR4 of transistor is connected to controller through resistance R4, grounded emitter, and colelctor electrode connects the positive pole of diode D4.The negative pole of diode D4 connects power supply, and the two ends of diode D4 and the line bag of relay J 4 are in parallel.The first end of the power supply of one termination 220V of the normally opened contact of relay J 4, the other end is given a dinner for a visitor from afar a terminal of machine 4, and another terminal of blower fan 4 connects the second end of the power supply of 220V.When user needs blower fan 4 to work, when pressing AN4, processor is checked through the signal pressing AN4, a high potential signal is provided to the base stage of transistor TR4, transistor turns, the line of the relay J 4 be connected with its colelctor electrode is surrounded by electric current to be passed through, and its normally opened contact closes, and 220V power supply and luminous connected by blower fan 4; When user does not need blower fan 4 to work, when will press AN4 again, processor is checked through the signal pressing AN4, a low-potential signal is provided to the base stage of transistor TR4, transistor cutoff, the line bag of the relay J 4 be connected with its colelctor electrode does not have electric current to pass through, and its normally opened contact disconnects, and blower fan 4 and 220V power supply disconnect.
For driving the drive circuit of alarm to comprise transistor TR5 and resistance R5, wherein the base stage TR5 of transistor is connected to controller through resistance R5, grounded emitter, and colelctor electrode connects one end of buzzer (alarm), another termination power of buzzer.The signal that first differential pressure pickup 16 exports by the first threshold values comparator OP1 and the first threshold values compare, when the signal that differential pressure pickup 16 exports is greater than the first threshold values, comparator OP1 exports low-potential signal, LEDs ON in first photoelectrical coupler PE1 and luminous, photoelectric tube conducting in photoelectrical coupler PE1, first input of processor obtains a low-potential signal, signal is sent to alarm and display after processor obtains this low-potential signal, make alarm equipment alarm, display is made to show the printed words of exhaust-air filter 10 inefficacy, when the signal that differential pressure pickup 16 exports is less than the first threshold values, comparator OP1 exports high potential signal, light emitting diode cut-off in first photoelectrical coupler PE1, photoelectric tube cut-off in photoelectrical coupler PE1, first input of processor obtains a high potential signal, the signal that first differential pressure pickup 16 exports by the second threshold values comparator OP2 and the second threshold values compare, when the signal that differential pressure pickup exports is less than the second threshold values, comparator OP2 exports low-potential signal, LEDs ON in second photoelectrical coupler PE2 and luminous, photoelectric tube conducting in photoelectrical coupler PE2, second input of processor obtains a low-potential signal, signal is sent to alarm and display after processor receives this low-potential signal, make alarm equipment alarm, display is made to show the printed words of exhaust-air filter 10 breakage, when the signal that the first differential pressure pickup exports is greater than the second threshold values, comparator OP2 exports high potential signal, light emitting diode cut-off in second photoelectrical coupler PE2, photoelectric tube cut-off in photoelectrical coupler PE1, second input of processor obtains a high potential signal.
The signal that second differential pressure pickup 17 exports by the 3rd threshold values comparator OP3 and the 3rd threshold values compare, when the signal that differential pressure pickup 17 exports is greater than the 3rd threshold values, comparator OP3 exports low-potential signal, LEDs ON in photoelectrical coupler PE3 and luminous, photoelectric tube conducting in photoelectrical coupler PE3, 3rd input of processor obtains a low-potential signal, signal is sent to alarm and display after processor obtains this low-potential signal, make alarm equipment alarm, display is made to show the printed words of main filter 11 inefficacy, when the signal that differential pressure pickup 17 exports is less than the 3rd threshold values, comparator OP3 exports high potential signal, light emitting diode cut-off in photoelectrical coupler PE3, photoelectric tube cut-off in photoelectrical coupler PE3, 3rd input of processor obtains a high potential signal, the signal that second differential pressure pickup 17 exports by the 4th threshold values comparator OP4 and the 4th threshold values compare, when the signal that differential pressure pickup 17 exports is less than the 4th threshold values, comparator OP4 exports low-potential signal, LEDs ON in 4th photoelectrical coupler PE4 and luminous, luminous fulgurite conducting in photoelectrical coupler PE4, 4th input of processor obtains a low-potential signal, signal is sent to alarm and display after processor receives this low-potential signal, make alarm equipment alarm, display is made to show the printed words of main filter 11 breakage, when the signal that the second differential pressure pickup exports is greater than the 4th threshold values, comparator OP2 exports high potential signal, light emitting diode cut-off in 4th photoelectrical coupler PE4, photoelectric tube cut-off in photoelectrical coupler PE4, 4th input of processor obtains a high potential signal.
Control system provided by the invention also comprises the stepper motor driver for Driving Stepping Motor 24, and it is connected with controller by photoisolator.When user needs to open retractable door, user presses AN5, after processor receives the signal of AN5 connection, there is provided the pulse signal of rotating forward to stepper motor driver through photoelectrical coupler, motor rotates forward, and it drives retractable door to move up, at this moment Hall switch KH1 and KL1 all disconnects, at this moment continue to press AN5, motor continues to rotate forward, and retractable door continues to move up; When moving to topmost, the magnet steel in retractable door is aimed at Hall switch KH1, and KH1 connects, and after processor receives this signal, can not provide signal by photoisolator, stepper motor is quit work.When user needs to close retractable door, user presses AN6, after processor receives the signal of AN6 connection, there is provided the pulse signal of reversion to stepper motor driver through photoelectrical coupler, motor reversal, it drives retractable door to move down, at this moment Hall switch KH1 and KL1 all disconnects, at this moment continue to press AN6, motor continues reversion, and retractable door continues to move down; When moving to bottom, the magnet steel in retractable door is aimed at Hall switch KL1, and KL1 connects, and after processor receives this signal, stepper motor is quit work.Between voltage-stabilized power supply and 220V power supply, arrange K switch H2 and KL2, be in order to when control signal is inoperative, positive closing power supply.
Below by reference to the accompanying drawings, operation principle of the present invention is described in detail.But those of ordinary skill in the art it should be understood that description is only for explaining claims.But protection scope of the present invention is not limited to description.Any those skilled in the art of being familiar with are in the technical scope that the present invention discloses, and the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (1)
1. a Biohazard Safety Equipment, described safety cabinet comprises housing, operating room is provided with in housing, clean room, air circulation system and control system, wherein, housing comprises flexible glass door, clean room is arranged on operating room, air circulation system is used for circulating air between operating room and clean room, air circulation system comprises the blower fan being arranged on clean room's air inlet, it is characterized in that, clean room comprises contaminant particle material production part and contaminant particle substance decomposition parts, described contaminant particle material production part and contaminant particle substance decomposition parts are successively set on the blowing mouth place of blower fan, described dye thing particle matter production part comprises the first ultraviolet lamp, the UV-irradiation that organic pollution in air sends through ultraviolet lamp forms contaminant particle material, contaminant particle substance decomposition parts comprise the second ultraviolet lamp and are arranged on the photocatalyst layer with multiple cellular through hole of ultraviolet lamp both sides, the top of clean room is provided with exhaust outlet, under exhaust outlet, is disposed with the first ozone decomposed device and exhaust-air filter, main filter and the second ozone decomposed device is set gradually between clean room and operating room, the left wall of clean room is provided with distinguished and admirable guide way, described distinguished and admirable guide way is top is that semicircle is spherical, bottom is columniform combination, described control system comprises upper limit Hall switch (KH1) and lower limit Hall switch (KL1), upper limit Hall switch (KH1) is arranged on the upper end of operating room, and lower limit Hall switch (KL1) is arranged on the lower end of operating room, the lower end of glass retractable door is provided with magnet steel, and when door closes operating room, magnet steel is aimed at lower limit Hall switch (KL1).
2. Biohazard Safety Equipment according to claim 1, is characterized in that, the surface of the cellular through hole of described photocatalyst layer is coated with titanium dioxide granule.
3. Biohazard Safety Equipment according to claim 2, is characterized in that, described first ozone decomposed device and the second ozone decomposed utensil have multiple cellular through hole, the surface of each through hole are coated with manganese dioxide particle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310086551.XA CN103127967B (en) | 2013-03-19 | 2013-03-19 | Photocatalyst sterilization biosafety cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310086551.XA CN103127967B (en) | 2013-03-19 | 2013-03-19 | Photocatalyst sterilization biosafety cabinet |
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| CN103127967A CN103127967A (en) | 2013-06-05 |
| CN103127967B true CN103127967B (en) | 2014-12-31 |
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| JP6711802B2 (en) * | 2017-10-13 | 2020-06-17 | 株式会社日立産機システム | Inspection method for safety cabinet and its exhaust duct connection |
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| DE69725958T2 (en) * | 1996-05-15 | 2004-09-02 | Matsushita Electric Industrial Co., Ltd., Kadoma | Method for preventing excessive ozone from escaping from an air deodorization and disinfection device |
| US7056476B2 (en) * | 2000-06-15 | 2006-06-06 | Kabushiki Kaisha Toshiba | Refrigerator and deodorizer producing ozone by high-voltage discharge |
| CN101551143B (en) * | 2008-04-02 | 2011-09-28 | 展晶科技(深圳)有限公司 | Air purifier |
| CN102421457B (en) * | 2009-03-12 | 2014-11-12 | 斯特里特罗克斯有限公司 | Sterilization and decontamination of an enclosed environment |
| CN201945290U (en) * | 2010-11-30 | 2011-08-24 | 上海力申科学仪器有限公司 | Detection structure for cabinet door switch of biological safety cabinet |
| CN202497789U (en) * | 2012-03-06 | 2012-10-24 | 江苏瑞丰科技实业有限公司 | PM2.5 integrated air purifying treatment device |
| CN102589055A (en) * | 2012-03-06 | 2012-07-18 | 江苏瑞丰科技实业有限公司 | PM2.5 (Phase Modulation) integral air purification treatment device |
| CN102872923A (en) * | 2012-10-16 | 2013-01-16 | 立德泰勀(上海)科学仪器有限公司 | Biosafety cabinet provided with easily-assembled and disassembled filters |
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Address after: 201607 Shanghai Songjiang District City Maogang town of strong Road No. 599 Patentee after: Shanghai Boxun Medical Biological Instrument Corp. Address before: 200071, room 9, 909 floor, Shen Shen building, No. 198, Shanghai, Zhongshan Road Patentee before: Shanghai Boxun Industry & Commerce Co., Ltd. |