CN104101065A - Air supplement control system used for air supplement air curtain of ventilation cabinet - Google Patents
Air supplement control system used for air supplement air curtain of ventilation cabinet Download PDFInfo
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- CN104101065A CN104101065A CN201410286551.9A CN201410286551A CN104101065A CN 104101065 A CN104101065 A CN 104101065A CN 201410286551 A CN201410286551 A CN 201410286551A CN 104101065 A CN104101065 A CN 104101065A
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- frequency converter
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Abstract
The invention discloses an air supplement control system used for an air supplement air curtain of a ventilation cabinet, which belongs to ventilation equipment for a laboratory. The control system comprises an exhaust frequency converter, an air supplement frequency converter and a central controller, wherein the exhaust frequency converter is connected into an exhaust fan for controlling the exhaust air volume of the exhaust fan, the air supplement frequency converter is connected into an air supplement fan for controlling the supplement air volume of the air supplement fan, and is also connected into the exhaust frequency converter for adjusting the output frequency of the air supplement frequency converter according to the current output frequency of the exhaust frequency converter, and the central controller is respectively connected into the exhaust frequency converter and the air supplement frequency converter for acquiring the current states of the exhaust frequency converter and the air supplement frequency converter and controlling the current output frequency of the exhaust frequency converter and the air supplement frequency converter. The current output frequency of the exhaust frequency converter is acquired by the central controller, and the frequency of the air supplement frequency converter is controlled according to the current output frequency of the exhaust frequency converter, so that in the process that the exhaust fan extracts plenty of air for discharging harmful gas in the laboratory, fresh air is supplemented by the air supplement fan into a room, and further the condition that negative pressure exists in the room due to fast discharge of the air is avoided.
Description
Technical field
The present invention relates to a kind of laboratory ventilation equipment, in particular, the present invention relates generally to a kind of benefit wind control system of mending general mood curtain for vent cabinet.
Background technology
In the laboratory of existing use, having very most of laboratory just to consider will drain the toxic and harmful producing in experimental implementation, and ignored in use a large amount of air draft meetings of laboratory, cause the excessive impact causing of indoor negative pressure, in laboratory, in the excessive situation of negative pressure, room noise can strengthen, just corresponding increase of air conditioning energy consumption simultaneously, energy waste is more frequent.And adopt traditional air intake equipment easily to cause Laboratory Air flow velocity too fast, what impact part was tested normally carries out, and then is necessary to do further research and improvement for structure and the control system of the air air intake equipment in laboratory.
Summary of the invention
One of object of the present invention is for above-mentioned deficiency, a kind of benefit wind control system of mending general mood curtain for vent cabinet is provided, with expectation, solve a large amount of air drafts of air exhausting device in prior art and easily cause indoor negative pressure to increase, and traditional air intake equipment can make again the technical problems such as air velocity in laboratory is too fast.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of benefit wind control system of mending general mood curtain for vent cabinet provided by the present invention, described control system comprises: air draft frequency converter, access exhaust blower, for controlling the exhaust air rate size of exhaust blower; Mend wind frequency converter, blower fan is mended in access, and for controlling the benefit air force of mending blower fan, described benefit wind frequency converter also accesses air draft frequency converter, for adjust the output frequency of self according to the current output frequency of air draft frequency converter; Central controller, accesses respectively air draft frequency converter and mends wind frequency converter, for gathering air draft frequency converter and the current state of mending wind frequency converter, controls the air draft frequency converter output frequency current with mending wind frequency converter.
As preferably, further technical scheme is: described central controller also accesses Electric air valve, described Electric air valve is arranged on the air inlet of mending Fan pipeline, for controlled the open and close of Electric air valve according to air draft frequency converter and the current state of mending wind frequency converter by central controller.
Further technical scheme is: in described control system, also comprise pipe pressure sensor, described pipe pressure sensor is arranged on exhaust duct, for the real-time pressure in air draft frequency converter feedback exhaust duct, and then air draft frequency converter is according to the current pressure in exhaust duct, changes output frequency.
Further technical scheme is: wind blind is mended in described benefit blower and pipeline access, discharge, and then air curtain is mended in formation for the new wind being entered by benefit blower fan from mending wind blind.
Further technical scheme is: described exhaust blower is equipped with on blower fan for disconnecting or the hand switch of turn-on power with mending.
Further technical scheme is: the air intake vent of exhaust blower is positioned at the rear end of mending fan outlet.
Compared with prior art, one of beneficial effect of the present invention is: the current frequency that gathers air draft frequency converter by central controller, control on this basis the frequency of mending wind frequency converter, and then to make exhaust blower be to discharge experiment indoor harmful gas by a large amount of processes of extracting out of air, by mending blower fan, to indoor, fill into new wind, and then avoid air to discharge and make the indoor negative pressure that occurs fast, a kind of benefit wind control system framework for vent cabinet benefit general mood curtain simultaneously provided by the present invention is simple, be suitable for installing and using in all kinds of laboratories, range of application is wide.
Accompanying drawing explanation
Fig. 1 is for the system architecture diagram of one embodiment of the invention is described;
In figure, 1 is that air draft frequency converter, 2 is that benefit wind frequency converter, 3 is that exhaust blower, 4 is that central controller, 6 is that Electric air valve, 7 is pipe pressure sensor for mending blower fan, 5.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated.
Shown in figure 1, one embodiment of the present of invention are a kind of benefit wind control systems of mending general mood curtain for vent cabinet, in the present embodiment, need to arrange in this control system:
Air draft frequency converter 1, access exhaust blower 3, for controlling the exhaust air rate size of exhaust blower 3;
Mend wind frequency converter 2, blower fan 4 is mended in access, and for controlling the benefit air force of mending blower fan 4, described benefit wind frequency converter 2 also accesses air draft frequency converter 1, for adjust the output frequency of self according to the current output frequency of air draft frequency converter 1;
Central controller 5, accesses respectively air draft frequency converter 1 and mends wind frequency converter 2, for gathering air draft frequency converter 1 and the current state of mending wind frequency converter 2, controls air draft frequency converter 1 output frequency current with mending wind frequency converter 2.
In the present embodiment, by central controller 5, gather the current frequency of air draft frequency converter 1, control on this basis the frequency of mending wind frequency converter 2, and then make exhaust blower 3 for discharging experiment indoor harmful gas by a large amount of processes of extracting out of air, by mending blower fan 4, to indoor, fill into new wind, and then avoid air to discharge and make the indoor negative pressure that occurs fast.Efficiently solve the indoor excessive noise because of negative pressure generation, increase the problems such as air conditioning energy consumption.
According to another embodiment of the present invention, for promoting, mend the accuracy that blower fan 4 is mended wind, avoid the draught head that indoor appearance is larger, and make to mend wind passage keeps closing under non-operating state, also can make above-mentioned central controller 5 access again Electric air valve 6, and Electric air valve 6 is arranged on the air inlet of mending blower fan 4 pipelines, for controlled the open and close of Electric air valve 6 according to air draft frequency converter 1 and the current state of mending wind frequency converter 2 by central controller 5.
Shown in Fig. 1, an embodiment who is more preferably for technical solution problem in the present invention, for making the pressure that central processing unit can cause according to air draft, accurately control the output frequency of mending frequency converter, preferably in system, set up again pipe pressure sensor 7, and this pipe pressure sensor 7 is arranged on exhaust duct, for the real-time pressure in air draft frequency converter 1 feedback exhaust duct, and then air draft frequency converter 1 is according to the current pressure in exhaust duct, change output frequency, and force value can gather and participate in control procedure by central controller 5.
On the basis of above-mentioned control system, inventor also improves mending the structure of blower fan 4, is specially benefit blower fan 4 is accessed and mended wind blind by pipeline, discharge, and then air curtain is mended in formation for the new wind being entered by benefit blower fan 4 from mending wind blind.And be the operability of elevator system, described exhaust blower 3 is equipped with on blower fan 4 for disconnecting or the hand switch of turn-on power with mending.For avoiding the new wind being entered by benefit blower fan 4 directly to be discharged by exhaust blower 3, the air intake vent of exhaust blower 3 need be positioned to the rear end of mending blower fan 4 air outlets.
Go out as shown in Figure 1, the above-mentioned preferred embodiment of the present invention in actual use, user's manual unlocking hand switch, make exhaust blower 3 and the power turn-on of mending blower fan 4, and then exhaust blower 3 is outwards extracted indoor air out, and then the pernicious gas that laboratory experiment is produced is discharged, benefit blower fan 4 running fills into indoor by the new wind of outside, maintain indoor air pressure, meanwhile, central controller 5 gathers respectively air draft frequency converter 1 and the current frequency of mending wind frequency converter 2, according to air draft frequency converter 1, the output frequency of wind frequency converter 2 is mended in current output frequency adjustment, and then make indoor exhaust air rate corresponding with benefit air quantity, avoid indoor generation negative pressure, air draft frequency converter 1 also can be adjusted its current output frequency in real time according to the force value of pipe pressure sensor 7 feedbacks, and the exhaust air rate of exhaust blower 3 is controlled, when differing greatly between air draft frequency converter 1 and the output frequency of benefit wind frequency converter 2, or current room pressure is when mending wind, central controller 5 also can control Electric air valve 6 and cut out, and avoids mending blower fan 4 and continues to fill into new wind to indoor, affects indoor normal barometric pressure environment.
Except above-mentioned, also it should be noted that " embodiment ", " another embodiment " that spoken of in this manual, " embodiment " etc., refer to specific features, structure or the feature in conjunction with this embodiment, described and be included at least one embodiment that the application's generality describes.In description, a plurality of local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with arbitrary embodiment, what advocate is in conjunction with other embodiment, to realize this feature, structure or feature also to fall within the scope of the invention.
Although with reference to a plurality of explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (6)
1. for vent cabinet, mend a benefit wind control system for general mood curtain, it is characterized in that described control system comprises:
Air draft frequency converter, access exhaust blower, for controlling the exhaust air rate size of exhaust blower;
Mend wind frequency converter, blower fan is mended in access, and for controlling the benefit air force of mending blower fan, described benefit wind frequency converter also accesses air draft frequency converter, for adjust the output frequency of self according to the current output frequency of air draft frequency converter;
Central controller, accesses respectively air draft frequency converter and mends wind frequency converter, for gathering air draft frequency converter and the current state of mending wind frequency converter, controls the air draft frequency converter output frequency current with mending wind frequency converter.
2. benefit wind control system of mending general mood curtain for vent cabinet according to claim 1, it is characterized in that: described central controller also accesses Electric air valve, described Electric air valve is arranged on the air inlet of mending Fan pipeline, for controlled the open and close of Electric air valve according to air draft frequency converter and the current state of mending wind frequency converter by central controller.
3. benefit wind control system of mending general mood curtain for vent cabinet according to claim 1, it is characterized in that: in described control system, also comprise pipe pressure sensor, described pipe pressure sensor is arranged on exhaust duct, for the real-time pressure in air draft frequency converter feedback exhaust duct, and then air draft frequency converter is according to the current pressure in exhaust duct, changes output frequency.
4. according to the benefit wind control system of mending general mood curtain for vent cabinet described in claim 1 or 3, it is characterized in that: described benefit blower and pipeline accesses mends wind blind, for the new wind being entered by benefit blower fan, from mending wind blind, discharge, and then form benefit air curtain.
5. benefit wind control system of mending general mood curtain for vent cabinet according to claim 4, is characterized in that: described exhaust blower is equipped with on blower fan for disconnecting or the hand switch of turn-on power with mending.
6. benefit wind control system of mending general mood curtain for vent cabinet according to claim 1, is characterized in that: the air intake vent of exhaust blower is positioned at the rear end of mending fan outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286551.9A CN104101065A (en) | 2014-06-25 | 2014-06-25 | Air supplement control system used for air supplement air curtain of ventilation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286551.9A CN104101065A (en) | 2014-06-25 | 2014-06-25 | Air supplement control system used for air supplement air curtain of ventilation cabinet |
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| CN104101065A true CN104101065A (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410286551.9A Pending CN104101065A (en) | 2014-06-25 | 2014-06-25 | Air supplement control system used for air supplement air curtain of ventilation cabinet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223995A (en) * | 2015-10-15 | 2016-01-06 | 上海应用技术学院 | Laboratory hood control system |
| CN110043999A (en) * | 2019-04-24 | 2019-07-23 | 中国科学院武汉病毒研究所 | A kind of biosecurity laboratory exhaust system and negative pressure keeping method and circulation sterilization method |
| CN110560446A (en) * | 2019-07-01 | 2019-12-13 | 广州三洛环保科技有限公司 | Ventilation cabinet |
| CN112162511A (en) * | 2020-09-25 | 2021-01-01 | 天长市高朋实验设备有限公司 | Laboratory ventilation control system based on thing networking |
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| JP2005201557A (en) * | 2004-01-16 | 2005-07-28 | Matsushita Electric Ind Co Ltd | Ventilator |
| KR101125443B1 (en) * | 2009-10-23 | 2012-03-27 | 김송이 | method and apparatus for controlling ventilation-balance in a district-unit ventilation equipment using motorized diffusers with a damper and a diffuser integrated |
| CN102652948A (en) * | 2011-03-04 | 2012-09-05 | 北京鸣远伟业实验室设备有限公司 | Method for controlling plurality of parallel fume hoods |
| CN203018418U (en) * | 2012-12-06 | 2013-06-26 | 南京诺丹工程技术有限公司 | Air supplement type fume hood |
| CN203068728U (en) * | 2013-01-22 | 2013-07-17 | 中粮黄海粮油工业(山东)有限公司 | Intelligent ventilation device for laboratory |
| CN203132041U (en) * | 2013-02-04 | 2013-08-14 | 岳彬 | Air compensation and exhausting device of ventilation cabinet |
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2014
- 2014-06-25 CN CN201410286551.9A patent/CN104101065A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005201557A (en) * | 2004-01-16 | 2005-07-28 | Matsushita Electric Ind Co Ltd | Ventilator |
| KR101125443B1 (en) * | 2009-10-23 | 2012-03-27 | 김송이 | method and apparatus for controlling ventilation-balance in a district-unit ventilation equipment using motorized diffusers with a damper and a diffuser integrated |
| CN102652948A (en) * | 2011-03-04 | 2012-09-05 | 北京鸣远伟业实验室设备有限公司 | Method for controlling plurality of parallel fume hoods |
| CN203018418U (en) * | 2012-12-06 | 2013-06-26 | 南京诺丹工程技术有限公司 | Air supplement type fume hood |
| CN203068728U (en) * | 2013-01-22 | 2013-07-17 | 中粮黄海粮油工业(山东)有限公司 | Intelligent ventilation device for laboratory |
| CN203132041U (en) * | 2013-02-04 | 2013-08-14 | 岳彬 | Air compensation and exhausting device of ventilation cabinet |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223995A (en) * | 2015-10-15 | 2016-01-06 | 上海应用技术学院 | Laboratory hood control system |
| CN110043999A (en) * | 2019-04-24 | 2019-07-23 | 中国科学院武汉病毒研究所 | A kind of biosecurity laboratory exhaust system and negative pressure keeping method and circulation sterilization method |
| CN110043999B (en) * | 2019-04-24 | 2024-03-19 | 中国科学院武汉病毒研究所 | Exhaust system, negative pressure maintaining method and circulating disinfection method for biosafety laboratory |
| CN110560446A (en) * | 2019-07-01 | 2019-12-13 | 广州三洛环保科技有限公司 | Ventilation cabinet |
| CN112162511A (en) * | 2020-09-25 | 2021-01-01 | 天长市高朋实验设备有限公司 | Laboratory ventilation control system based on thing networking |
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Application publication date: 20141015 |