CN203791316U - Self-adapting variable air volume ventilation cabinet - Google Patents
Self-adapting variable air volume ventilation cabinet Download PDFInfo
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- CN203791316U CN203791316U CN201420181482.0U CN201420181482U CN203791316U CN 203791316 U CN203791316 U CN 203791316U CN 201420181482 U CN201420181482 U CN 201420181482U CN 203791316 U CN203791316 U CN 203791316U
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Abstract
The utility model provides a self-adapting variable air volume ventilation cabinet and relates to the field of special equipment for laboratories. A variable air volume requirement of the ventilation cabinet for a laboratory is met to protect health and safety of experiment personnel and effectively save energy. The ventilation cabinet comprises a cabinet body, a window on the front surface of the cabinet body, and a variable air volume system connected with the cabinet body, wherein the variable air volume system comprises a variable air volume controller integrated on the cabinet body, as well as a door height sensor, a door position switch, an air volume detection sensor and an air valve actuator which are electrically connected with the variable air volume controller respectively; and the variable air volume system further comprises a variable air volume valve electrically connected with the air valve actuator. The self-adapting variable air volume ventilation cabinet employs the advanced variable air volume system, average face air velocity of the ventilation cabinet is controlled via quick response, accurate control and mature logic to protect the health and safety of the experiment personnel, a human body induction device is integrated, the air volume is automatically switched, and the average face air velocity is controlled to achieve an energy-saving effect.
Description
[technical field]
The utility model relates to special equipment field, laboratory, especially a kind of self adaptation air-volume-variable fume hood.
[background technology]
Vent cabinet (also claiming toxin-expelling cabinet, fume hood etc.) thus be for remove the harmful smokes such as aggressive chemistry gas and toxic smog in chemical experiment process, to reach the experimental facilities of the protection person and device security, its Main Function has: toxic and harmful is controlled in vent cabinet, and force outside toxic and harmful discharge chamber, prevent the harm of pernicious gas to human body; Ventilation is controlled contacting of toxic and harmful and operating personnel in effective isolation cabinet to the face wind speed of vent cabinet form, effectively protects operating personnel's safety; By the distinctive exhaust system of vent cabinet, poisonous, pernicious gas are outputed to remote home, and can process by cleaning treatment system, reach environmental emission standard, guarantee that environment is not contaminated; Prevent naked light used in experiment and other infringement of dangerous experiment to human body and property.
The variable air volume system of existing vent cabinet is perfect not, can not effectively protect the person and device security.
[summary of the invention]
The utility model provides a kind of self adaptation air-volume-variable fume hood, can not effectively protect the problem of the person and device security in order to solve existing vent cabinet.
A kind of self adaptation air-volume-variable fume hood of the present utility model, comprising: cabinet, the form of described cabinet front surface, and the variable air volume system being connected with cabinet; Wherein, described variable air volume system comprises: the exhaust duct that is positioned at cabinet top, PLC controller, and the high sensor of door, door position switch, air volume test sensor, differential pressure pickup and the fan valve executor that are electrically connected to PLC controller respectively, also comprise the variable air rate valve being electrically connected to fan valve executor; The high sensor of described door is for passing to PLC controller by experimenter's position signalling, described air volume test sensor passes to PLC controller for the air quantity data in the described exhaust duct that detection is obtained, described differential pressure pickup passes to PLC controller for the pressure difference data of described variable air rate valve both sides that detection is obtained, and PLC controller regulates described door position switch and fan valve executor according to the experimenter's who receives position signalling, air quantity data and pressure difference data self adaptation; The opening degree of described form changes with door position switch; The opening degree of described variable air rate valve changes with fan valve executor.
Wherein, also comprise: at described cabinet inner and with the table top that described form position matches, be arranged on the water, electricity and gas system on described cabinet panel, and the illuminator that is arranged on described cabinet inside.
Wherein, described water, electricity and gas system comprises at least one group of tap, and the outlet of described tap is arranged in the inner panel of described cabinet, and the control section of described tap is arranged on the relevant position of cabinet exterior panel.
Wherein, also comprise: be arranged on the temperature sensor that described cabinet is inner and be electrically connected to PLC controller, described temperature sensor passes to PLC controller by the temperature data of cabinet inside, and is exceeding preset temperature value alarm by PLC controller.
Wherein, also comprise: the display floater being electrically connected to PLC controller, for the data that show that PLC controller receives.
Wherein, also comprise: be arranged on the explosion-proof relief mouth at cabinet top, when blasting, air-flow discharged.
Wherein, also comprise: the pipeline passway that runs through cabinet one side panel.
Self adaptation air-volume-variable fume hood of the present utility model has adopted advanced variable air volume system, can effectively protect the person and device security.
[accompanying drawing explanation]
Fig. 1 is the structural representation of self adaptation air-volume-variable fume hood in the utility model embodiment.
[specific embodiment]
Inventor considers, the chemical experiment that may produce the harmful smokes such as aggressive chemistry gas and toxic smog is confined in a particular space, and this space can be discharged to remote home by produced harmful smoke by air-flow.For guaranteeing that harmful smoke can discharge completely, do not produce excessively, corrosion is not caused in vent cabinet inside, need to consider following factor: whether vent cabinet form face wind speed can be controlled at 0.3-0.8m/s; (due to domestic, with regard to vent cabinet, do not formulate relevant criterion, carry out U.S.'s ansi standard here); The aspects such as the airflow direction in vent cabinet, air force, benefit wind; Need to consider object and user of service position, the mobile impact on vent cabinet internal gas flow before vent cabinet; In ventilation shaft, air quantity changes the impact on vent cabinet internal gas flow; The corrosion resistance of vent cabinet base material, heat-resisting quantity; Energy-saving and emission-reduction; Consider in vent cabinet and may use kinds of experiments instrument and equipment, also needing in vent cabinet considered the interface of tank and upper and lower water route, circuit, gas circuit; Putting of experiment appliance; The outfit of vent cabinet intraoral illumination and function light source (as uviol lamp etc.); Can provide multiple matingplan according to the difference of user's demand; For guaranteeing that experimenter does not touch pernicious gas, vent cabinet outside need provide guidance panel, controls ventilation, illumination, the device power supply (DPS) management of vent cabinet inside to reach; Explosion-proof performance; Warning device.Self adaptation air-volume-variable fume hood of the present utility model can adopt corrosion-resistant, antiacid alkali in a large number, the laboratory proprietary material that high temperature resistant and bearing is good to combine, adopt international advanced person's laboratory variable air system to reach the ventilation standard of Laboratory Request simultaneously, and there is FA pressure independent and energy-saving effect.Aforesaid pressure independent, in ventilation shaft, there is air pressure change, or vent cabinet is in front of the door during personnel or object mobile, vent cabinet air pressure inside remains in a stable air pressure range, also can say it is the impact that vent cabinet inner ventilation effect is not changed by ambient air pressure.Based on this, by following embodiment, be elaborated.
The self adaptation air-volume-variable fume hood of the present embodiment can be shown in Figure 1, comprising: cabinet 10, the form 20 of cabinet 10 front surfaces, and the variable air volume system 30 being connected with cabinet 10; Wherein, variable air volume system 30 comprises: the exhaust duct 301 that is positioned at cabinet 10 tops, PLC controller 302, and the high sensor 303 of door, door position switch 304, air volume test sensor 305, differential pressure pickup 306 and the fan valve executor 307 that are electrically connected to PLC controller 302 respectively, also comprise the variable air rate valve 308 being electrically connected to fan valve executor 307.Wherein, the high sensor 303 of door is for passing to PLC controller 302 by experimenter's position signalling, air volume test sensor 305 passes to PLC controller 302 for the air quantity data in the described exhaust duct 301 that detection is obtained, differential pressure pickup 306 passes to PLC controller 302 for the pressure difference data of variable air rate valve 308 both sides that detection is obtained, and PLC controller 302 is according to the experimenter's who receives position signalling, air quantity data and pressure difference data self adaptation adjustment doors bit switch 304 and fan valve executor 307; The opening degree of form 20 changes with door position switch 304; The opening degree of variable air rate valve 308 changes with fan valve executor 307.More preferred, self adaptation air-volume-variable fume hood also can comprise: at cabinet 10 inner and with the table top 40 that form 20 positions match, be arranged on the water, electricity and gas system 50 on cabinet 10 panels, and the illuminator 60 that is arranged on cabinet 10 inside.Water, electricity and gas system 50 comprises at least one group of tap 501, and the outlet of tap 501 is arranged in the inner panel of cabinet 10, and the control section of tap 501 is arranged on the relevant position of cabinet 10 exterior panels.Also can comprise: be arranged on the temperature sensor 70 that cabinet 10 is inner and be electrically connected to PLC controller 302, temperature sensor 70 passes to PLC controller 302 by the temperature data of cabinet 10 inside, and is exceeding preset temperature value alarm by PLC controller 302.Also can comprise: the display floater 80 being electrically connected to PLC controller 302, for the data that show that PLC controller receives.Also can comprise: be arranged on the explosion-proof relief mouth 309 at cabinet 10 tops, when blasting, air-flow discharged.Also can comprise: the pipeline passway 90 that runs through cabinet 10 1 side panels.
In specific implementation, vent cabinet forms structure and comprises following part.
Form: 6 millimeters of Double-layer clamp film implosion guards are made, and effectively protect operator's safety.Be furnished with cross track, can partially open form, facilitate experimental implementation.Rearmounted counterweight adds synchronizing shaft, synchronizing wheel, synchronous belt, makes to inspect to pull more smoothly, stablize, and can combine closely with variable air volume system accessory simultaneously.Meet hydromechanical handle design, the generation of turbulent flow and eddy current has been avoided in perfection.Form is furnished with wind-supplying mouth up and down, even if form is closed the negative pressure requirement that also can realize in vent cabinet completely.
Cabinet: main body supporting frame adopts the thick steel pipe of 2.0mm, and bearing is good, steel pipe is through nanometer vitrification, epoxy resin spraying, to reach corrosion-resistant, antiacid alkali; Cabinet adopts the thick high-quality cold-rolled steel sheet of 1.2mm, through nanometer vitrification, surperficial epoxy resin electrostatic spraying, acid and alkali-resistance anticorrosion.Cabinet height, width require to provide multiple choices scheme according to user; Color can require to provide multiple choices according to user.
Table top: can select to represent the ceramic table top of up-to-date laboratory table top science and technology, ceramic table top is on the bases such as kaolin, blue china clay and feldspar, has added multiple special material, then in industrial oven, through more than 1250 ℃ high temperature, long-time calcining forms.Unique because of its material prescription, manufacturing process is advanced, thereby has effectively guaranteed that product has the incomparable property of civilian pottery, can easily tackle the harshest laboratory environment.Specialty pottery in laboratory does not discharge any harmful substance, and having eliminated physics and chemistry pallet face release formaldehyde and marble countertop in the past has the hidden danger such as radiation, and never distortion is difficult for aging, high temperature resistant, acid and alkali-resistance, is the most top laboratory table top material at present.
Explosion-proof Design: vent cabinet top special design explosion-proof relief mouth, when blasting, air-flow can be discharged by top movable pressure relief opening, with Protection person's safety.
Water power gas accessory is selected: the optional remote control faucet that fills cup groove and reach 8-10 group most, gas tap on inner side plate.All remote control taps are controlled by the handle being arranged on vent cabinet exterior panel.This kind of installation method can provide more experiment area, and improves operator's security.Cup groove be arranged on interior, can install at most two, left and right each one, avoided taking work top.The connection of all inside remote control taps all adopts copper pipe, has effectively guaranteed pipeline service life.Top sealing illuminating lamp (working face 400Lux illumination is generally provided).Be arranged on the pipeline passway in exterior panel and internal side wall, in the situation that not opening form, can carry out easily inner laboratory apparatus and be connected with outside circuit and data cable, improved greatly experiment safety and ease for operation.
Variable air volume system: adopt the international advanced quick actuator of air-valve, door high sensor (infrared ray sensor), differential pressure pickup, temperature sensor, PLC turn-key system etc., be equipped with the variable air rate valve of PP material simultaneously in vent cabinet outlet.It mainly realizes the blast that gathers at any time vent cabinet, the data that collect is controlled to the opening degree of variable air rate valve by actuator.Key technology point is the introducing of self adaptation variable air volume system, and its basic function comprises: face wind speed controlling value can be followed according to user and be required to set, and system is by setting value chain of command wind speed; Directly measure exhaust air rate, numeral shows centre plane wind speed and valve area state.Automatically regulate air quantity with the safe face wind speed under constant different conditions, respond control time <1 second.Under unsafe condition, sound and digital display alarm.Someone, under unattended state, face wind speed switches automatically between 0.3-0.5M/S.The high system of automatically-controlled door can have under people, unattended state, and automatic switch is to optimum height or closed condition, when form height is in off position time, can reach best safety, energy-conservation state when face wind speed remains on 0.3m/s simultaneously.Vent cabinet door maintains minimum exhaust air rate during lower than setting height or contract fully.Vent cabinet form height surpasses sets safe altitude alarm, and safe altitude can be set.Vent cabinet cabinet temperature surpasses sets safe temperature alarm, and safe temperature can be set.Air-valve complete shut-down when vent cabinet is not used.When unexpected, there is dump function.When leaving, operating personnel can set time delay automatic shutdown.Control module is supported Modbus universal network agreement, can dock with centralized monitoring system.Air-valve adopts PP material, and integrated injection molding forms, corrosion-resistant, is provided with down liquid bath, can adjust its opening degree according to the variation of air pressure, and the air pressure in vent cabinet and face wind speed remain on a state (being pressure independent) stably the most at last.Supporting when various inputs, output cable unification are dispatched from the factory, and adopt plug-in type to connect design, reduce maintenance difficulties in the future.Can combine closely with fan frequency conversion system, reach optimum energy-saving effect.Can also with the room variable air volume system option that is connected, finally realize room air pressure and form effective cooperation with vent cabinet air pressure.The data network matching with laboratory building option can be provided, realize distal center and control.
Design of Variable Air Volume System requires: most vent cabinet can be realized the air-conditioning requirement of determining under air quantity, it is constant to be that its duty can only adapt to ventilation shaft internal pressure, the situation that face wind speed is constant, and in the middle of practical application, pressure in ventilation shaft is subject to rotation speed of fan and other ventilation equipment service condition and in change, and face wind speed also can be due to the erect-position of operating personnel before form and mobile in changing, wind speed changes while exceeding 0.3-0.8m/s face to face, just may make the excessive of the interior harmful poisonous gas of vent cabinet, operating personnel's risk is increased.Therefore guarantee face wind speed, guarantee that again energy-saving and emission-reduction are most important functional requirements simultaneously.And adopt after self adaptation variable air volume system, can reach following effect: self adaptation automatic lifting: system senses before form from unmanned when having people, automatically fast form is risen to safe altitude, when having people to nobody, automatically form is down to setting minimum altitude, produce effectively isolation, air draft is down to the minimum exhaust air rate guaranteeing under safe prerequisite, energy-saving safe simultaneously.Servo-actuated lifting: when operator gently lifts form, form will rise to safe altitude automatically, and during flicking form, form will be down to setting minimum altitude automatically.Automatically limit for height: system is being set form limitation in height below safe altitude automatically, people is when raising form, and system can be down to form setting safe altitude automatically.Move into for convenience instrument and equipment, can form be risen to maximum height automatically by specific operation.Pinch resistant functionality: when form declines automatically, as meet obstructions or infrared induction to barrier, can automatically stop, preventing from crushing.Above function, it is effective or cancellation that user can follow according to service condition fast setting.
The use of pottery table top: ceramic table top is as the state-of-the art table top of Modern Laboratory, and its main advantage is its superpower corrosion resistance, high temperature resistance, impact resistance and bearing.Below the contrast effect with general common experimental chamber table top, referring to table one.
Table one
In sum, self adaptation air-volume-variable fume hood of the present utility model is a kind of novel energy-conserving product, can be energy-conservation thus also by the significantly enhancing bringing on application function in original vent cabinet technical foundation, the extensive expansion of application, makes to test furniture and in laboratory environment, brings into play positive effect.Adopt self adaptation air-volume-variable fume hood of the present utility model, have very large advantage aspect operating cost, when having people to operate, exhausting amount increases, and when unattended, exhausting amount reduces automatically.To reduce the loss of indoor central air-conditioning cold like this, general cold consumption is in 60% left and right.Blower fan adopts VFC, and the power consumption of blower fan can reduce power consumption with the variation of exhausting amount like this, generally can reduce 50% of blower fan electric energy.Adopt self adaptation air-volume-variable fume hood of the present utility model, personnel operate safe and reliable.
Here description of the present utility model and application are all illustrative and schematic, are not to want by scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change is completely possible, and for those those of ordinary skill in the art, the various parts of the replacement of embodiment and equivalence are all known.Those skilled in the art are also noted that, in the situation that not departing from spirit of the present utility model or substantive characteristics, the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts, and in the situation that not departing from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (7)
1. a self adaptation air-volume-variable fume hood, is characterized in that, comprising: cabinet, the form of described cabinet front surface, and the variable air volume system being connected with cabinet; Wherein, described variable air volume system comprises: the exhaust duct that is positioned at cabinet top, PLC controller, and the high sensor of door, door position switch, air volume test sensor, differential pressure pickup and the fan valve executor that are electrically connected to PLC controller respectively, also comprise the variable air rate valve being electrically connected to fan valve executor; The high sensor of described door is for passing to PLC controller by experimenter's position signalling, described air volume test sensor passes to PLC controller for the air quantity data in the described exhaust duct that detection is obtained, described differential pressure pickup passes to PLC controller for the pressure difference data of described variable air rate valve both sides that detection is obtained, and PLC controller regulates described door position switch and fan valve executor according to the experimenter's who receives position signalling, air quantity data and pressure difference data self adaptation; The opening degree of described form changes with door position switch; The opening degree of described variable air rate valve changes with fan valve executor.
2. self adaptation air-volume-variable fume hood as claimed in claim 1, it is characterized in that, also comprise: at described cabinet inner and with the table top that described form position matches, be arranged on the water, electricity and gas system on described cabinet panel, and the illuminator that is arranged on described cabinet inside.
3. self adaptation air-volume-variable fume hood as claimed in claim 2, it is characterized in that, described water, electricity and gas system comprises at least one group of tap, and the outlet of described tap is arranged in the inner panel of described cabinet, and the control section of described tap is arranged on the relevant position of cabinet exterior panel.
4. self adaptation air-volume-variable fume hood as claimed in claim 1, it is characterized in that, also comprise: be arranged on the temperature sensor that described cabinet is inner and be electrically connected to PLC controller, described temperature sensor passes to PLC controller by the temperature data of cabinet inside, and is exceeding preset temperature value alarm by PLC controller.
5. self adaptation air-volume-variable fume hood as claimed in claim 1, is characterized in that, also comprises: the display floater being electrically connected to PLC controller, and for the data that show that PLC controller receives.
6. self adaptation air-volume-variable fume hood as claimed in claim 1, is characterized in that, also comprises: be arranged on the explosion-proof relief mouth at cabinet top, when blasting, air-flow discharged.
7. self adaptation air-volume-variable fume hood as claimed in claim 1, is characterized in that, also comprises: the pipeline passway that runs through cabinet one side panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420181482.0U CN203791316U (en) | 2014-04-14 | 2014-04-14 | Self-adapting variable air volume ventilation cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420181482.0U CN203791316U (en) | 2014-04-14 | 2014-04-14 | Self-adapting variable air volume ventilation cabinet |
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| CN203791316U true CN203791316U (en) | 2014-08-27 |
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| CN201420181482.0U Expired - Fee Related CN203791316U (en) | 2014-04-14 | 2014-04-14 | Self-adapting variable air volume ventilation cabinet |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959359A (en) * | 2015-07-09 | 2015-10-07 | 湖南朗圣实验室技术发展有限公司 | Intelligent ventilation cupboard |
| CN104984970A (en) * | 2015-06-04 | 2015-10-21 | 上海锐石工程技术有限公司 | Inner-outer air supplementing ventilation cabinet |
| CN105728067A (en) * | 2016-03-01 | 2016-07-06 | 王俊梅 | Gas cleaning type medicine cabinet capable of automatically regulating air distribution |
| CN106077013A (en) * | 2016-06-03 | 2016-11-09 | 安徽育安实验室装备有限公司 | A kind of automatic air quantity ventilated chamber |
| CN106238430A (en) * | 2016-08-11 | 2016-12-21 | 贾新霞 | A kind of rewinding machine dust collecting system |
| CN107175247A (en) * | 2017-06-19 | 2017-09-19 | 派尔实验装备有限公司 | A kind of variable air quantity vent cabinet |
| CN107806697A (en) * | 2017-12-12 | 2018-03-16 | 湖南普信工程技术有限公司 | A kind of cabinet door stroke Wind-speed controller |
| CN107812769A (en) * | 2017-12-12 | 2018-03-20 | 湖南普信工程技术有限公司 | A kind of wind pressure type fume hood controller |
| CN107999501A (en) * | 2017-11-13 | 2018-05-08 | 京华建设科技有限公司 | A kind of intelligence ventilating type vent cabinet |
| CN108114962A (en) * | 2016-11-26 | 2018-06-05 | 北京成威博瑞实验室设备有限公司 | A kind of method, structure and the system of vent cabinet lifting protective window |
| CN108114963A (en) * | 2016-11-26 | 2018-06-05 | 北京成威博瑞实验室设备有限公司 | Mend the wind wing and with the vent cabinet for mending the wind wing |
| CN111545546A (en) * | 2020-06-19 | 2020-08-18 | 深圳市新景环境技术有限公司 | Laboratory exhaust cabinet variable air volume adjusting method and adjusting device |
| CN112536305A (en) * | 2020-12-01 | 2021-03-23 | 山东欧普科贸有限公司 | Intelligent fume chamber in laboratory |
| CN112827995A (en) * | 2021-03-01 | 2021-05-25 | 湖南长海现代实验室设备有限公司 | PID self-tuning method for variable air volume ventilation cabinet surface air speed |
| CN115971194A (en) * | 2022-12-29 | 2023-04-18 | 广州驰拓智能科技有限公司 | Variable air volume control method and device for fume hood |
-
2014
- 2014-04-14 CN CN201420181482.0U patent/CN203791316U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104984970A (en) * | 2015-06-04 | 2015-10-21 | 上海锐石工程技术有限公司 | Inner-outer air supplementing ventilation cabinet |
| CN104959359A (en) * | 2015-07-09 | 2015-10-07 | 湖南朗圣实验室技术发展有限公司 | Intelligent ventilation cupboard |
| CN105728067B (en) * | 2016-03-01 | 2017-09-29 | 王俊梅 | Automatically adjust the air purifying type medical cupboard of cloth wind |
| CN105728067A (en) * | 2016-03-01 | 2016-07-06 | 王俊梅 | Gas cleaning type medicine cabinet capable of automatically regulating air distribution |
| CN106077013A (en) * | 2016-06-03 | 2016-11-09 | 安徽育安实验室装备有限公司 | A kind of automatic air quantity ventilated chamber |
| CN106077013B (en) * | 2016-06-03 | 2018-11-20 | 安徽育安实验室装备有限公司 | A kind of automatic air quantity vent cabinet |
| CN106238430A (en) * | 2016-08-11 | 2016-12-21 | 贾新霞 | A kind of rewinding machine dust collecting system |
| CN108114962A (en) * | 2016-11-26 | 2018-06-05 | 北京成威博瑞实验室设备有限公司 | A kind of method, structure and the system of vent cabinet lifting protective window |
| CN108114963A (en) * | 2016-11-26 | 2018-06-05 | 北京成威博瑞实验室设备有限公司 | Mend the wind wing and with the vent cabinet for mending the wind wing |
| CN107175247A (en) * | 2017-06-19 | 2017-09-19 | 派尔实验装备有限公司 | A kind of variable air quantity vent cabinet |
| CN107999501A (en) * | 2017-11-13 | 2018-05-08 | 京华建设科技有限公司 | A kind of intelligence ventilating type vent cabinet |
| CN107806697A (en) * | 2017-12-12 | 2018-03-16 | 湖南普信工程技术有限公司 | A kind of cabinet door stroke Wind-speed controller |
| CN107812769A (en) * | 2017-12-12 | 2018-03-20 | 湖南普信工程技术有限公司 | A kind of wind pressure type fume hood controller |
| CN111545546A (en) * | 2020-06-19 | 2020-08-18 | 深圳市新景环境技术有限公司 | Laboratory exhaust cabinet variable air volume adjusting method and adjusting device |
| CN112536305A (en) * | 2020-12-01 | 2021-03-23 | 山东欧普科贸有限公司 | Intelligent fume chamber in laboratory |
| CN112827995A (en) * | 2021-03-01 | 2021-05-25 | 湖南长海现代实验室设备有限公司 | PID self-tuning method for variable air volume ventilation cabinet surface air speed |
| CN115971194A (en) * | 2022-12-29 | 2023-04-18 | 广州驰拓智能科技有限公司 | Variable air volume control method and device for fume hood |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20170414 |