CN105921477A - Novel laboratory ventilation cabinet - Google Patents
Novel laboratory ventilation cabinet Download PDFInfo
- Publication number
- CN105921477A CN105921477A CN201610411411.9A CN201610411411A CN105921477A CN 105921477 A CN105921477 A CN 105921477A CN 201610411411 A CN201610411411 A CN 201610411411A CN 105921477 A CN105921477 A CN 105921477A
- Authority
- CN
- China
- Prior art keywords
- temperature
- temperature sensor
- air vent
- control device
- cabinet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Abstract
The invention discloses a novel laboratory ventilation cabinet. The novel laboratory ventilation cabinet comprises a cabinet body, a detecting device, a ventilation device, a control device and display equipment; the detecting device includes a first temperature sensor and a second temperature sensor; the first temperature sensor is arranged on the outer side of the cabinet body, and is used for detecting the temperature in a laboratory; the second temperature sensor is arranged on the inner side of the cabinet body, and is used for detecting the temperature in the ventilation cabinet; the control device calculates a temperature difference through obtaining the detecting values of the first temperature sensor and the second sensor, and controls the ventilation device to work according to the magnitude instruction of the temperature difference; the display equipment includes a display screen, and is used for displaying the detecting values of the first temperature sensor and the second temperature sensor; and the control device controls working modes of the ventilation device according to the magnitude section classification of the temperature difference, further judges a temperature change tendency when the ventilation device is located in a lower ventilation mode, and judges if the ventilation grade needs to be adjusted according to the temperature change tendency.
Description
Technical field
The present invention relates to laboratory equlpment technical field, particularly relate to a kind of Novel laboratory ventilated chamber.
Background technology
It is typically necessary outfit ventilated chamber in the chemical laboratory of big-and-middle universities and colleges and R&D institution etc..Ventilated chamber
Main Function time the gas poisonous, harmful produced in chemical laboratory is expelled to outdoor, to protect
The safety of card experiment operator.
Operation in ventilated chamber is typically directed to electricity consumption, even open firing, and misoperation usually can cause fire
Calamity, i.e. causes the loss of life safety and property safety.Therefore, the monitoring to ventilation in-cabinet temperature very must
Want.In the design of existing ventilated chamber, being provided with temperature monitoring unit and ventilation installation, this kind of ventilation installation exists
Temperature in ventilated chamber relatively low and higher time all use same power to be operated, so, in ventilated chamber
When temperature is relatively low, ventilation installation uses firm power can cause the waste of the energy when being operated；At ventilated chamber
When interior temperature is higher, it is inadequate that ventilation installation uses above-mentioned power to be likely to result in air draft dynamics when being operated
, so that the temperature in ventilated chamber constantly raises, easily there is fire incident hidden danger in problem.
Summary of the invention
The technical problem existed based on background technology, the present invention proposes a kind of Novel laboratory ventilated chamber.
The Novel laboratory ventilated chamber that the present invention proposes, including: cabinet, detection device, ventilation unit, control
Device processed and display device；
Detection device includes the first temperature sensor and the second temperature sensor；Cabinet is located in first temperature sensor
External side, for the temperature that test experience is indoor；Second temperature sensor is located at inside cabinet, is used for detecting
Temperature in ventilated chamber；
Control device, with the first temperature sensor, the second temperature sensor, ventilation unit communication connection；Control
Device processed obtains the detected value T of the first temperature sensor1Detected value T with the second temperature sensor2, and calculate
Go out T1With T2Difference T, control device and control ventilation unit work by the instruction of the size of above-mentioned difference T；
Wherein, T=T2-T1；
Display device is located at inside cabinet, and display device includes display screen；Display device and control device communication
Connect, control device and obtain the detected value T of the first temperature sensor1Detected value T with the second temperature sensor2,
And by T1And T2It is sent to display screen show；
Control to be preset with in device three temperature models: the first temperature model, the second temperature model, the 3rd temperature
Degree pattern；And three air vent modes: the first air vent mode, the second air vent mode, third venting pattern；
And three temperature models and three air vent mode one_to_one corresponding, i.e. under the first temperature model, control device choosing
Select the first air vent mode, under the second temperature model, control device select the second air vent mode, the 3rd temperature
Under degree pattern, control device and select third venting pattern；
Under the first air vent mode, the operating power controlling device adjustment ventilation unit is P1；Ventilate second
Under pattern, the operating power controlling device adjustment ventilation unit remains P2；Under third venting pattern, control
Device processed adjusts the operating power of ventilation unit and remains P3；Wherein P1<P2<P3。
Control device internal memory and contain three preset temperature value: T01、T02、T03；If T≤T01, in showing cabinet
Temperature is in the first temperature model；If T01<T≤T02, show that the temperature in cabinet is in the second temperature model；
If T02<T≤T03, show that the temperature in cabinet is in the 3rd temperature model；Wherein, T01<T02<T03；
It is preset with the 4th air vent mode and the 5th air vent mode in controlling device；Under the 4th air vent mode, control
Device processed adjusts the operating power of ventilation unit and remains P4；Under the 5th air vent mode, control device and adjust
The operating power of ventilation unit is maintained at P5；Wherein, P1<P4<P2, P2<P5<P3；
When the temperature in cabinet is in the first temperature model, controls device and determine whether the first temperature sensing
The detected value of device and difference T of the second temperature sensor detected value and T01Magnitude relationship；If T > T01/ 2, control
Device processed uses the 4th air vent mode, if T≤T01/ 2, control device and use the first air vent mode；
When the temperature in cabinet is in the second temperature model, controls device and determine whether the first temperature sensing
The detected value of device and difference T of the second temperature sensor detected value and (T01+T02The magnitude relationship of)/2；If
T>(T01+T02)/2, control device and use the 5th air vent mode, if T≤(T01+T02)/2, control device and adopt
Use the second air vent mode；
Preferably, described display device also includes display lamp；If the detected value of the first temperature sensor and
Difference T of the detection of two temperature sensors > T03, control device obtain this information and instruct control display lamp carry out
Flicker.
Preferably, also including water injector, water injector is located at cabinet inside top, water injector and control
Device communicates to connect, and according to controlling the instruction action of device.
Preferably, control device internal memory and contain preset temperature warning value TmaxWith preset temperature normality value Tmin；If
The detected value T of the second temperature sensor2≥Tmax, control device obtain this information and instruct control water injector open
Open；If the detected value T of the second temperature sensor2≤Tmin, control device and obtain this information and instruct control water spray
Device is closed.
The present invention is provided with detection device, ventilation unit and control device；Detection device includes the first temperature sensing
Device and the second temperature sensor, the first temperature sensor passes for the temperature of test experience indoor, the second temperature
Sensor, for detecting the temperature in ventilated chamber, controls device and obtains the detected value T of the first temperature sensor1With
The detected value T of two temperature sensors2, and calculate T1With T2Difference T, control device according to above-mentioned difference T
Dynamically control ventilation unit work.It is preset with three temperature models and three air vent modes in controlling device,
Three temperature models and three air vent mode one_to_one corresponding, so, ventilation in-cabinet temperature higher and relatively low time,
It is respectively adopted different air fluxes, on the one hand can avoid the waste of the energy, on the other hand preferably ensure that
The air flux of ventilated chamber.Further, when the temperature in cabinet is in the first temperature model, and T > T01/ 2,
Control device and use the second air vent mode；When the temperature in cabinet is in the second temperature model, and T >
(T01+T02)/2, control device and use third venting pattern, so, the shape that persistently can rise at in-cabinet temperature
Use the air vent mode of higher one-level under state in advance, it is to avoid in-cabinet temperature persistently rises, reduce the fire in cabinet
Hidden danger degree.The present invention is additionally provided with display device, display device can show in real time laboratory indoor temperature and
Actual temperature in ventilated chamber, experiment operator can be observed in ventilated chamber more intuitively by display device
Temperature variations, to carry out counter-measure in advance.Display device also includes flashing lamp, when the second temperature passes
Sensor detects when the constant temperature in ventilated chamber rises, and shows there may be potential danger, controls device
After obtaining this information, instruction control flashing lamp flashes, and answers the other side to remind experiment operator to take in time
Case, to ensure the safety of experimental implementation.
Accompanying drawing explanation
Fig. 1 be a kind of Novel laboratory ventilated chamber structural representation；
Fig. 2 be a kind of Novel laboratory ventilated chamber control device structural representation.
Detailed description of the invention
As shown in Figure 1 and Figure 2, Fig. 1, Fig. 2 are a kind of Novel laboratory ventilated chamber that the present invention proposes.
Reference Fig. 1, Fig. 2, the Novel laboratory ventilated chamber that the present invention proposes, including: cabinet 1, detection dress
Put, ventilation unit 2, control device and display device；
Detection device includes the first temperature sensor 4 and the second temperature sensor 5；First temperature sensor 4 sets
Outside cabinet 1, for the temperature that test experience is indoor；Second temperature sensor 5 is located at inside cabinet 1,
Temperature in detecting ventilated chamber；
Control device, communicate to connect with first temperature sensor the 4, second temperature sensor 5, ventilation unit 2；
Control device and obtain the detected value T of the first temperature sensor 41Detected value T with the second temperature sensor 52,
And calculate T1With T2Difference T, control device by the size of above-mentioned difference T instruction control ventilation unit 2
Work；Wherein, T=T2-T1；
It is internal that cabinet 1 is located at by display device, and display device includes display screen 3；Display device leads to controlling device
Letter connects, and controls device and obtains the detected value T of the first temperature sensor 41Inspection with the second temperature sensor 5
Measured value T2, and by T1And T2It is sent to display screen 3 show；Experimenter is by display screen 3 intuitively
Temperature in the temperature of observation experiment indoor and ventilated chamber, beneficially experimenter is to the temperature in ventilated chamber
Carry out, control, before emergency occurs, taking counter-measure in advance.
Control to be preset with in device three temperature models: the first temperature model, the second temperature model, the 3rd temperature
Degree pattern；And three air vent modes: the first air vent mode, the second air vent mode, third venting pattern；
And three temperature models and three air vent mode one_to_one corresponding, i.e. under the first temperature model, control device choosing
Select the first air vent mode, under the second temperature model, control device select the second air vent mode, the 3rd temperature
Under degree pattern, control device and select third venting pattern；
Under the first air vent mode, the operating power controlling device adjustment ventilation unit 2 is P1；Lead to second
Under wind pattern, the operating power controlling device adjustment ventilation unit 2 remains P2；Under third venting pattern,
The operating power controlling device adjustment ventilation unit 2 remains P3；Wherein P1<P2<P3。
Control device internal memory and contain three preset temperature value: T01、T02、T03；If T≤T01, in showing cabinet 1
Temperature be in the first temperature model；If T01<T≤T02, show that the temperature in cabinet 1 is in the second temperature mould
Formula；If T02<T≤T03, show that the temperature in cabinet 1 is in the 3rd temperature model；Wherein, T01<T02<T03；
Further, it is preset with the 4th air vent mode and the 5th air vent mode in controlling device；Ventilate the 4th
Under pattern, the operating power controlling device adjustment ventilation unit 2 remains P4；Under the 5th air vent mode,
The operating power controlling device adjustment ventilation unit 2 is maintained at P5；Wherein, P1<P4<P2, P2<P5<P3；
When the temperature in cabinet 1 is in the first temperature model, controls device and determine whether that the first temperature passes
The detected value of sensor 4 and difference T of the second temperature sensor 5 detected value and T01Magnitude relationship；If
T>T01/ 2, show that the rate of rise in temperature in ventilated chamber is very fast, the first air vent mode is possibly cannot be in the short time
Interior by temperature reduction, now need the air vent mode of higher one-level, then control device and use the 4th air vent mode,
By using the air vent mode of stronger one-level, the temperature of ventilated chamber is reduced to controlled range within a short period of time；
If T≤T01/ 2, control device and use the first air vent mode；
When the temperature in cabinet 1 is in the second temperature model, controls device and determine whether that the first temperature passes
The detected value of sensor 4 and difference T of the second temperature sensor 5 detected value and T01+T02The magnitude relationship of/2；
If T > T01+T02/ 2, show that the temperature in ventilated chamber still rises under the second air vent mode very fast, now need
Want higher leveled air vent mode the temperature in ventilated chamber to be reduced with within a short period of time, then control device and use
5th air vent mode, if T≤T01+T02/ 2, control device and use the second air vent mode；
Display device also includes display lamp 6；If the detected value of the first temperature sensor 4 and the second temperature sensor
Difference T of the detection of 5 > T03, show that the detected value of the second temperature sensor 5 is relatively big, i.e. temperature in ventilated chamber
Spend higher, exceeded safety value, need experimenter that this situation is taked counter-measure, this timed unit
Obtain this information and instruct control display lamp 6 flash, to remind staff to note.
Present embodiment also includes that water injector 7, water injector 7 are located at cabinet 1 inside top, water injector
7 communicate to connect with controlling device, and according to controlling the instruction action of device；Control device internal memory and contain default temperature
Degree warning value TmaxWith preset temperature normality value Tmin；If the detected value T of the second temperature sensor 52≥Tmax, table
Temperature in bright cabinet 1 is too high, it is understood that there may be disaster hidden-trouble, and this timed unit obtains this information and instructs
Control water injector 7 to open；If the detected value T of the second temperature sensor 52≤Tmin, in ventilated chamber is described
Temperature is lowered, it is not necessary to again working region is carried out spray cooling, and this timed unit obtains this information also
Instruction control water injector 7 close, water injector 7 the safety having ensured experimental implementation further is set.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
Being limited to this, any those familiar with the art is in the technical scope that the invention discloses, according to this
The technical scheme of invention and inventive concept thereof in addition equivalent or change, all should contain the protection in the present invention
Within the scope of.
Claims (4)
1. a Novel laboratory ventilated chamber, it is characterised in that including: cabinet (1), detection device, ventilation unit (2), control device and display device；
Detection device includes the first temperature sensor (4) and the second temperature sensor (5)；Cabinet (1) outside is located in first temperature sensor (4), for the temperature that test experience is indoor；Cabinet (1) inner side is located in second temperature sensor (5), for detecting the temperature in ventilated chamber；
Control device, with the first temperature sensor (4), the second temperature sensor (5), ventilation unit (2) communication connection；Control device and obtain the detected value T of the first temperature sensor (4)1Detected value T with the second temperature sensor (5)2, and calculate T1With T2Difference T, control device and control ventilation unit (2) work by the instruction of the size of above-mentioned difference T；Wherein, T=T2-T1；
It is internal that cabinet (1) is located at by display device, and display device includes display screen (3)；Display device communicates to connect with controlling device, controls device and obtains the detected value T of the first temperature sensor (4)1Detected value T with the second temperature sensor (5)2, and by T1And T2It is sent to display screen (3) show；
Control to be preset with in device three temperature models: the first temperature model, the second temperature model, the 3rd temperature model；And three air vent modes: the first air vent mode, the second air vent mode, third venting pattern；And three temperature models and three air vent mode one_to_one corresponding, i.e. under the first temperature model, control device select the first air vent mode, under the second temperature model, control device select the second air vent mode, under the 3rd temperature model, control device select third venting pattern；
Under the first air vent mode, the operating power controlling device adjustment ventilation unit (2) is P1；Under the second air vent mode, the operating power controlling device adjustment ventilation unit (2) remains P2；Under third venting pattern, the operating power controlling device adjustment ventilation unit (2) remains P3；Wherein P1<P2<P3。
Control device internal memory and contain three preset temperature value: T01、T02、T03；If T≤T01, show that the temperature in cabinet (1) is in the first temperature model；If T01<T≤T02, show that the temperature in cabinet (1) is in the second temperature model；If T02<T≤T03, show that the temperature in cabinet (1) is in the 3rd temperature model；Wherein, T01<T02<T03；
It is preset with the 4th air vent mode and the 5th air vent mode in controlling device；Under the 4th air vent mode, the operating power controlling device adjustment ventilation unit (2) remains P4；Under the 5th air vent mode, the operating power controlling device adjustment ventilation unit (2) is maintained at P5；Wherein, P1<P4<P2, P2<P5<P3；
When the temperature in cabinet (1) is in the first temperature model, controls device and determine whether the detected value of the first temperature sensor (4) and difference T of the second temperature sensor (5) detected value and T01Magnitude relationship；If T > T01/ 2, control device and use the 4th air vent mode, if T≤T01/ 2, control device and use the first air vent mode；
When the temperature in cabinet (1) is in the second temperature model, controls device and determine whether the detected value of the first temperature sensor (4) and difference T of the second temperature sensor (5) detected value and (T01+T02The magnitude relationship of)/2；If T > (T01+T02)/2, control device and use the 5th air vent mode, if T≤(T01+T02)/2, control device and use the second air vent mode.
Novel laboratory ventilated chamber the most according to claim 1, it is characterised in that described display device also includes display lamp (6)；If difference T of the detection of the detected value of the first temperature sensor (4) and the second temperature sensor (5) > T03, control device obtain this information and instruct control display lamp (6) flash.
Novel laboratory ventilated chamber the most according to claim 1, it is characterized in that, also include water injector (7), cabinet (1) inside top is located at by water injector (7), water injector (7) communicates to connect with controlling device, and according to controlling the instruction action of device.
Novel laboratory ventilated chamber the most according to claim 3, it is characterised in that control device internal memory and contain preset temperature warning value TmaxWith preset temperature normality value Tmin；If the detected value T of the second temperature sensor (5)2≥Tmax, control device and obtain this information and instruct control water injector (7) unlatching；If the detected value T of the second temperature sensor (5)2≤Tmin, control device and obtain this information and instruct control water injector (7) closedown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411411.9A CN105921477B (en) | 2016-06-03 | 2016-06-03 | Novel laboratory fume chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411411.9A CN105921477B (en) | 2016-06-03 | 2016-06-03 | Novel laboratory fume chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105921477A true CN105921477A (en) | 2016-09-07 |
| CN105921477B CN105921477B (en) | 2020-05-22 |
Family
ID=56833699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610411411.9A Active CN105921477B (en) | 2016-06-03 | 2016-06-03 | Novel laboratory fume chamber |
Country Status (1)
| Country | Link |
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| CN (1) | CN105921477B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747973A (en) * | 2017-10-27 | 2018-03-02 | 安徽育安实验室装备有限公司 | A kind of laboratory safety intelligent protecting method |
| CN108151222A (en) * | 2016-12-05 | 2018-06-12 | 王楚平 | Supplementary air type exhaust gas cabinet |
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| CN103978003A (en) * | 2014-04-18 | 2014-08-13 | 天长市华盛科技装饰有限公司 | CIT ventilation cabinet with temperature-proof smoke-proof and fire-extinguishing functions |
| CN104741355A (en) * | 2015-03-03 | 2015-07-01 | 安徽华盛科技控股股份有限公司 | CIT intelligent induction fume hood |
| CN105223995A (en) * | 2015-10-15 | 2016-01-06 | 上海应用技术学院 | Laboratory hood control system |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060079164A1 (en) * | 2004-09-30 | 2006-04-13 | Decastro Eugene A | Automatic sash safety mechanism |
| US20110244775A1 (en) * | 2010-04-02 | 2011-10-06 | Kewaunee Scientific Corporation | Apparatus and method for controlling and directing flow of contaminated air to filters and for monitoring filter loading in a biological safety cabinet |
| CN103978003A (en) * | 2014-04-18 | 2014-08-13 | 天长市华盛科技装饰有限公司 | CIT ventilation cabinet with temperature-proof smoke-proof and fire-extinguishing functions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151222A (en) * | 2016-12-05 | 2018-06-12 | 王楚平 | Supplementary air type exhaust gas cabinet |
| CN107747973A (en) * | 2017-10-27 | 2018-03-02 | 安徽育安实验室装备有限公司 | A kind of laboratory safety intelligent protecting method |
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| Publication number | Publication date |
|---|---|
| CN105921477B (en) | 2020-05-22 |
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Denomination of invention: A new type of laboratory fume hood Effective date of registration: 20220624 Granted publication date: 20200522 Pledgee: Bengbu Branch of China Postal Savings Bank Co.,Ltd. Pledgor: ANHUI YU'AN LABORATORY EQUIPMENT Co.,Ltd. Registration number: Y2022980008892 |