CN204165185U - A kind of variable air volume control system of laboratory ventilation system - Google Patents
A kind of variable air volume control system of laboratory ventilation system Download PDFInfo
- Publication number
- CN204165185U CN204165185U CN201420403392.1U CN201420403392U CN204165185U CN 204165185 U CN204165185 U CN 204165185U CN 201420403392 U CN201420403392 U CN 201420403392U CN 204165185 U CN204165185 U CN 204165185U
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- air
- blower fan
- control component
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- door
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Control Of Positive-Displacement Air Blowers (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The utility model discloses a kind of variable air volume control system of laboratory ventilation system, comprise vent cabinet Control Component, room lingering remnants of past customs amount Control Component and unit frequency-conversion Control Component.Described vent cabinet Control Component comprises displacement transducer, air velocity transducer, power module, LCD watch-dog and acoustic-optic alarm; Described room lingering remnants of past customs amount Control Component comprises some control dampers, blow valve and lingering remnants of past customs amount control cabinet; Described unit frequency-conversion Control Component comprises static pressure transducer, controller, frequency converter and blower fan; Described static pressure transducer is installed in blower fan air draft main pipeline, for detecting the force value of blower fan air draft main pipeline, described force value sends to the signal input part of controller and frequency converter, the signal output part connecting fan of controller and frequency converter, for producing control signal according to the force value received and sending to blower fan, described blower fan according to control signal adjusting rotary speed and exhaust air rate, and then regulates the pressure in blower fan air draft main pipeline.
Description
Technical field
The utility model relates to machine room automatic control field, laboratory, specifically, is related specifically to a kind of variable air volume control system of laboratory ventilation system.
Background technology
Because laboratory needs the equipment of ventilation more, its reason is:
1. a lot of experiment appliance requires ventilates.
2. a lot of chemical laboratory and combustion experiment need to test in laboratory hood.
If therefore in room, laboratory, air draft simply can cause room negative pressure higher, and waste gas can overflow under without any the adjustment of automatic control equipment, affect experimenter's safety, and energy consumption higher (cold of room air conditioner or heat can be discharged to outdoor by vent cabinet at any time).
In the prior art, a lot of producer utilizes the motor speed of Frequency Converter Control roof blower fan, the exhaust air rate of ventilation of room cabinet is adjusted with this, but it is balanced to be difficult to real air quantity, with do not reach 0.5 meter per second of vent cabinet face custom (national regulation regulation), also cannot realize laboratory tiny structure and energy-conservation.
Utility model content
The technical problem that the utility model actual needs solves is: for deficiency of the prior art, provide a kind of nitrogen spring jacking pin, to solve the problem.
The technical problem that the utility model solves can realize by the following technical solutions:
A variable air volume control system for laboratory ventilation system, comprises vent cabinet Control Component, room lingering remnants of past customs amount Control Component and unit frequency-conversion Control Component;
Wherein, described vent cabinet Control Component comprises displacement transducer, air velocity transducer, power module, LCD watch-dog and acoustic-optic alarm; Institute's displacement sensors and air velocity transducer are installed on the exhaust door place of vent cabinet, displacement transducer is for detecting the aperture change of exhaust door, air velocity transducer is for detecting the air speed value at exhaust door place, displacement transducer is connected LCD watch-dog with the signal output part of air velocity transducer by power module, and the output of described LCD watch-dog connects control damper and acoustic-optic alarm;
Described room lingering remnants of past customs amount Control Component comprises some control dampers, blow valve and lingering remnants of past customs amount control cabinet; Described some control dampers have the sensor for detecting air-supply variable air rate, the signal output part of sensor connects lingering remnants of past customs amount control cabinet, for the air-supply detected variable air rate is sent to lingering remnants of past customs amount control cabinet, the signal output part of described lingering remnants of past customs amount control cabinet connects blow valve, for regulating the angle of blow valve according to the air-supply variable air rate received;
Described unit frequency-conversion Control Component comprises static pressure transducer, controller, frequency converter and blower fan; Described static pressure transducer is installed in blower fan air draft main pipeline, for detecting the force value of blower fan air draft main pipeline, described force value sends to the signal input part of controller and frequency converter, the signal output part connecting fan of controller and frequency converter, for producing control signal according to the force value received and sending to blower fan, described blower fan according to control signal adjusting rotary speed and exhaust air rate, and then regulates the pressure in blower fan air draft main pipeline.
Further, described room lingering remnants of past customs amount Control Component also comprises door switch and door controller; Status signal for the opening of testing laboratory's door, and is sent to door controller by described door switch; Described door controller has timer, and the opening of laboratory door exceedes the preset value of timer, then door controller control acoustic-optic alarm gives the alarm.
Further, described vent cabinet Control Component comprises air quantity coarse adjustment and air quantity accurate adjustment, and described air quantity coarse adjustment detects the change of laboratory hood adjustment doors aperture by displacement transducer, controls laboratory hood exhaust air rate, keeps laboratory hood face wind speed in setting value; When after adjustment doors invariant position, air velocity transducer actual measurement vent cabinet face wind speed, carries out air quantity accurate adjustment.
Compared with prior art, the beneficial effects of the utility model are as follows:
1. security performance is high, can realize being perfectly safe of laboratory experiment personnel.
2. battle support laboratory vent cabinet face wind speed meets national requirements (0.5 meter per second).
3. can realize laboratory tiny structure.
4.------Experimental Area---is outdoor to walk amount to realize air flow direction all the time from Administrative Area.
5. the interlock of row's air conditioner exhaust system is sent in laboratory.
6. energy-conservation 70%, settle 120 vent cabinets for the laboratory of 3000 squares, annual power cost saving energy consumption is about 100 ~ 1,500,000.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of vent cabinet Control Component described in the utility model.
Fig. 2 is the schematic diagram of variable air volume control system described in the utility model.
Detailed description of the invention
The technological means realized for making the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the utility model further.
See Fig. 1, the variable air volume control system of a kind of laboratory ventilation system described in the utility model, comprises vent cabinet Control Component, room lingering remnants of past customs amount Control Component and unit frequency-conversion Control Component.
Part 1-vent cabinet controls
Described vent cabinet Control Component comprises displacement transducer, air velocity transducer, power module, LCD watch-dog and acoustic-optic alarm; Institute's displacement sensors and air velocity transducer are installed on the exhaust door place of vent cabinet, displacement transducer is for detecting the aperture change of exhaust door, air velocity transducer is for detecting the air speed value at exhaust door place, displacement transducer is connected LCD watch-dog with the signal output part of air velocity transducer by power module, and the output of described LCD watch-dog connects control damper and acoustic-optic alarm;
Adopt displacement detecting to add wind speed measurement double-sensing mode above to control vent cabinet face wind speed.First detect the change of laboratory hood adjustment doors aperture by displacement transducer, control laboratory hood exhaust air rate, keep laboratory hood face wind speed in setting value.When after adjustment doors invariant position, air velocity transducer actual measurement vent cabinet face wind speed, carries out precise fine-adjustment.
After vent cabinet door is closed, air quantity valve will maintain the minimum exhaust air rate of vent cabinet, to meet actual requirement.
LCD watch-dog shows vent cabinet actual face air speed value in real time.
Sound and light alarm when face wind speed exceedes setting range or equipment fault.
There is audible alarm vent cabinet door position time too high, due to fault face wind speed too high or too low time acousto-optic report to the police.
When there are abnormal conditions, opening dump schema control system and all opening air-valve, the maximum quantity of wind may discharged in exhaust system, not by the control of face air speed value.
Signal feedback/Signal feedback: vent cabinet watch-dog receives the signal exported by " power module " from-----region of ultra-red sensor, displacement transducer, air velocity transducer, then is exported to " air draft venturi valve " by " power module "-----.
Boiler pressure control more than part 2-room
Described room lingering remnants of past customs amount Control Component comprises some control dampers, blow valve and lingering remnants of past customs amount control cabinet; Described some control dampers have the sensor for detecting air-supply variable air rate, the signal output part of sensor connects lingering remnants of past customs amount control cabinet, for the air-supply detected variable air rate is sent to lingering remnants of past customs amount control cabinet, the signal output part of described lingering remnants of past customs amount control cabinet connects blow valve, for regulating the angle of blow valve according to the air-supply variable air rate received;
The exhaust air rate summation of the air discharging facility such as all variable air volume fume hood and suspended hood in real-time calculation and analysis, regulate room to fill into resh air requirement, make exhaust air rate and fill into the difference of resh air requirement constant (keep the air quantity from extravasating into analysis interior between analyzing constant).
Door position switch monitors room door opening, opens door controller for a long time and produces warning
Signal feedback/signal feedback: lingering remnants of past customs amount control cabinet-----receiving all ends " air draft venturi valve " output " air-supply variable air rate valve " signal----control all end blow valve angles.
3rd part-unit frequency-conversion controls (CPC control mode)
Described unit frequency-conversion Control Component comprises static pressure transducer, controller, frequency converter and blower fan; Described static pressure transducer is installed in blower fan air draft main pipeline, for detecting the force value of blower fan air draft main pipeline, described force value sends to the signal input part of controller and frequency converter, the signal output part connecting fan of controller and frequency converter, for producing control signal according to the force value received and sending to blower fan, described blower fan according to control signal adjusting rotary speed and exhaust air rate, and then regulates the pressure in blower fan air draft main pipeline.
Adopt CPC control method, blower fan air draft main pipeline arranges duct static pressure sensor, regulate rotation speed of fan by controller and frequency converter, maintain duct static pressure, thus reach the object meeting actual needs air quantity.
Such as: when the form of vent cabinet is drawn high, now in exhaust blower pipeline, static pressure reduces, and duct static pressure sensor feels that pressure changes, blower fan is regulated by controller and frequency converter, increase rotation speed of fan, increasing exhaust amount, makes the static pressure in pipeline revert to the setting value of original state.
---the reception " duct static pressure sensor " signal---display pipes static pressure----simultaneously output signal to new wind/air draft frequency converter (1#2# case) of signal feedback: 4#DDC control cabinet; Frequency converter outputs signal---unit.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a variable air volume control system for laboratory ventilation system, is characterized in that: comprise vent cabinet Control Component, room lingering remnants of past customs amount Control Component and unit frequency-conversion Control Component;
Wherein, described vent cabinet Control Component comprises displacement transducer, air velocity transducer, power module, LCD watch-dog and acoustic-optic alarm; Institute's displacement sensors and air velocity transducer are installed on the exhaust door place of vent cabinet, displacement transducer is for detecting the aperture change of exhaust door, air velocity transducer is for detecting the air speed value at exhaust door place, displacement transducer is connected LCD watch-dog with the signal output part of air velocity transducer by power module, and the output of described LCD watch-dog connects control damper and acoustic-optic alarm;
Described room lingering remnants of past customs amount Control Component comprises some control dampers, blow valve and lingering remnants of past customs amount control cabinet; Described some control dampers have the sensor for detecting air-supply variable air rate, the signal output part of sensor connects lingering remnants of past customs amount control cabinet, for the air-supply detected variable air rate is sent to lingering remnants of past customs amount control cabinet, the signal output part of described lingering remnants of past customs amount control cabinet connects blow valve, for regulating the angle of blow valve according to the air-supply variable air rate received;
Described unit frequency-conversion Control Component comprises static pressure transducer, controller, frequency converter and blower fan; Described static pressure transducer is installed in blower fan air draft main pipeline, for detecting the force value of blower fan air draft main pipeline, described force value sends to the signal input part of controller and frequency converter, the signal output part connecting fan of controller and frequency converter, for producing control signal according to the force value received and sending to blower fan, described blower fan according to control signal adjusting rotary speed and exhaust air rate, and then regulates the pressure in blower fan air draft main pipeline.
2. require the variable air volume control system of the laboratory ventilation system described in 1 according to claim, it is characterized in that: described room lingering remnants of past customs amount Control Component also comprises door switch and door controller; Status signal for the opening of testing laboratory's door, and is sent to door controller by described door switch; Described door controller has timer, and the opening of laboratory door exceedes the preset value of timer, then door controller control acoustic-optic alarm gives the alarm.
3. the variable air volume control system of the laboratory ventilation system described in 1 is required according to claim, it is characterized in that: described vent cabinet Control Component comprises air quantity coarse adjustment and air quantity accurate adjustment, described air quantity coarse adjustment detects the change of laboratory hood adjustment doors aperture by displacement transducer, control laboratory hood exhaust air rate, keep laboratory hood face wind speed in setting value; When after adjustment doors invariant position, air velocity transducer actual measurement vent cabinet face wind speed, carries out air quantity accurate adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403392.1U CN204165185U (en) | 2014-07-21 | 2014-07-21 | A kind of variable air volume control system of laboratory ventilation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403392.1U CN204165185U (en) | 2014-07-21 | 2014-07-21 | A kind of variable air volume control system of laboratory ventilation system |
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| CN204165185U true CN204165185U (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420403392.1U Expired - Fee Related CN204165185U (en) | 2014-07-21 | 2014-07-21 | A kind of variable air volume control system of laboratory ventilation system |
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Cited By (14)
| 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 |
| CN106269768A (en) * | 2015-05-25 | 2017-01-04 | 上海琨聚电子科技有限公司 | A kind of laboratory variable air ventilated chamber |
| CN106768727A (en) * | 2016-12-26 | 2017-05-31 | 沪东中华造船(集团)有限公司 | For the close property detecting system and method for Collective Protective System |
| CN107282582A (en) * | 2017-07-05 | 2017-10-24 | 北京兴博元科技发展有限责任公司 | The fume hood variable air volume control system of many Ventilation Control patterns |
| CN107781951A (en) * | 2016-08-18 | 2018-03-09 | 上海中试实验室设备有限公司 | A kind of laboratory air quantity controller |
| CN108302707A (en) * | 2017-12-26 | 2018-07-20 | 武汉科贝科技股份有限公司 | A kind of laboratory hood VAV control methods and system |
| CN108426342A (en) * | 2017-02-15 | 2018-08-21 | 阿自倍尔株式会社 | chamber pressure control system and method |
| CN108613319A (en) * | 2018-05-25 | 2018-10-02 | 北京普莱德斯工程技术有限责任公司 | A kind of exhaust control system |
| CN109059217A (en) * | 2018-05-04 | 2018-12-21 | 中国中元国际工程有限公司 | A kind of air quantity-changeable air conditioning system employing total air quantity calculation control method based on operation curve |
| CN109622550A (en) * | 2018-12-12 | 2019-04-16 | 苏州博思普工程技术有限公司 | A kind of room pressure control method |
| CN112393300A (en) * | 2020-11-30 | 2021-02-23 | 中船邮轮科技发展有限公司 | Control method and control system for kitchen gas collecting hood |
| CN113290011A (en) * | 2021-04-23 | 2021-08-24 | 宁波雪路登智能科技有限公司 | Fume chamber is used in laboratory with exhaust purification function |
| CN113739314A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Ventilation gas defense system for laboratory |
| CN115351012A (en) * | 2022-08-18 | 2022-11-18 | 东莞汇乐技术股份有限公司 | Dry dust remover combining ultrasonic wave and gas dust removal |
-
2014
- 2014-07-21 CN CN201420403392.1U patent/CN204165185U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269768A (en) * | 2015-05-25 | 2017-01-04 | 上海琨聚电子科技有限公司 | A kind of laboratory variable air ventilated chamber |
| 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 |
| CN107781951A (en) * | 2016-08-18 | 2018-03-09 | 上海中试实验室设备有限公司 | A kind of laboratory air quantity controller |
| CN106768727A (en) * | 2016-12-26 | 2017-05-31 | 沪东中华造船(集团)有限公司 | For the close property detecting system and method for Collective Protective System |
| CN106768727B (en) * | 2016-12-26 | 2024-03-26 | 沪东中华造船(集团)有限公司 | Confidentiality detection system and method for collective protection system |
| CN108426342B (en) * | 2017-02-15 | 2020-08-04 | 阿自倍尔株式会社 | Room pressure control system and method |
| CN108426342A (en) * | 2017-02-15 | 2018-08-21 | 阿自倍尔株式会社 | chamber pressure control system and method |
| CN107282582A (en) * | 2017-07-05 | 2017-10-24 | 北京兴博元科技发展有限责任公司 | The fume hood variable air volume control system of many Ventilation Control patterns |
| CN107282582B (en) * | 2017-07-05 | 2024-01-30 | 北京兴博元科技发展有限责任公司 | Fume hood variable air volume control system with multiple ventilation control modes |
| CN108302707A (en) * | 2017-12-26 | 2018-07-20 | 武汉科贝科技股份有限公司 | A kind of laboratory hood VAV control methods and system |
| CN109059217A (en) * | 2018-05-04 | 2018-12-21 | 中国中元国际工程有限公司 | A kind of air quantity-changeable air conditioning system employing total air quantity calculation control method based on operation curve |
| CN109059217B (en) * | 2018-05-04 | 2021-09-28 | 中国中元国际工程有限公司 | Total air volume control method of variable air volume air conditioning system based on operation curve |
| CN108613319A (en) * | 2018-05-25 | 2018-10-02 | 北京普莱德斯工程技术有限责任公司 | A kind of exhaust control system |
| CN109622550A (en) * | 2018-12-12 | 2019-04-16 | 苏州博思普工程技术有限公司 | A kind of room pressure control method |
| CN113739314A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Ventilation gas defense system for laboratory |
| CN112393300A (en) * | 2020-11-30 | 2021-02-23 | 中船邮轮科技发展有限公司 | Control method and control system for kitchen gas collecting hood |
| CN113290011A (en) * | 2021-04-23 | 2021-08-24 | 宁波雪路登智能科技有限公司 | Fume chamber is used in laboratory with exhaust purification function |
| CN115351012A (en) * | 2022-08-18 | 2022-11-18 | 东莞汇乐技术股份有限公司 | Dry dust remover combining ultrasonic wave and gas dust removal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150218 Termination date: 20190721 |