CN108080385A - A kind of laboratory hood with duct heater - Google Patents
A kind of laboratory hood with duct heater Download PDFInfo
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- CN108080385A CN108080385A CN201611032244.3A CN201611032244A CN108080385A CN 108080385 A CN108080385 A CN 108080385A CN 201611032244 A CN201611032244 A CN 201611032244A CN 108080385 A CN108080385 A CN 108080385A
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- air
- laboratory hood
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- wind
- additional thermal
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- 238000010438 heat treatment Methods 0.000 claims abstract description 63
- 230000005611 electricity Effects 0.000 claims abstract description 48
- 230000008901 benefit Effects 0.000 claims abstract description 27
- 239000013589 supplement Substances 0.000 claims abstract description 3
- 239000010445 mica Substances 0.000 claims description 12
- 229910052618 mica group Inorganic materials 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 11
- 239000011521 glass Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 12
- 238000002474 experimental method Methods 0.000 description 11
- 238000009423 ventilation Methods 0.000 description 8
- 229910001120 nichrome Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036651 mood Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
The present invention relates to a kind of laboratory hoods with duct heater, including cabinet, mend wind passage is provided in cabinet, it is provided with to supplement the benefit wind entrance of air into mend wind passage on cabinet, the additional thermal modules of electricity are provided in mend wind passage, filled into for heating from benefit wind entrance and flow through the air of mend wind passage.Laboratory hood provided by the invention with duct heater, the additional thermal modules of electricity are provided in mend wind passage, it is directly heated by the additional thermal modules of electricity from the new air in outdoor for mending cold that wind entrance fills into, the temperature of the outdoor newly air of the filled into cold of raising, so as to which the sliding door glass for avoiding causing laboratory hood hazes or condenses, improve the comfort in experimenter's experimentation, and heating is direct, and heating process is quick, and the efficiency of heating surface is high, heating effect is good, and should be widely promoted use.
Description
Technical field
The present invention relates to field of experiment equipment, more particularly to a kind of laboratory hood with duct heater.
Background technology
Laboratory hood, also known as vent cabinet, draught cupboard are that one kind is applied in laboratory pernicious gas etc. discharging laboratory
Commonly used equipment.Because of laboratory, various pernicious gases, foul smell, moisture and easily are particularly often generated in chemical laboratory
Combustion, explosive, corrosive substance etc. for the personal safety of Protection personnel, prevent these nuisances generated in laboratory
Matter is spread into laboratory, and laboratory would generally set laboratory hood, these harmful substances is discharged laboratory, so as to avoid reality
It tests human contact or sucks these harmful substances, endanger its personal safety.Thus, laboratory hood becomes laboratory, especially changes
Learn an indispensable important component in laboratory.
Room air is generally filled into laboratory hood by sliding door open front in existing laboratory hood, also there are some laboratory hoods
In be provided with the air-makeup system for filling into outdoor air, as disclosed in Chinese utility model patent document CN201520498631 have mend
The vent cabinet of wind system, is provided with secondary air channel road, and secondary air channel road connects the second ventilation opening and arranged on cabinet so that the second ventilation opening
It is connected by concealed secondary air channel road with outdoor air inlet, starts benefit simultaneously when user opens exhaust system for ventilation cabinets
Wind turbine, the second ventilation opening that outdoor fresh air is set by lift slide door lower end form upward gas curtain, are carried out directly into vent cabinet
Mend fresh air.For another example vent cabinet disclosed in Chinese utility model patent document CN201520216778, is provided with air-makeup system, mends
The mend wind passage of wind system and building connects, and air-makeup system respectively has at least one benefit wind in the upper and lower part of cabinet
Mouthful, wind-supplying mouth is towards blowing in working chamber, directly to fill into outdoor air into working chamber.
This way that outdoor air is directly filled into laboratory hood does not have on the weather conditions more than usual or zero degree
Problem, but in the winter in very cold winter, especially China northeast, then obstacle can be brought to experiment or causes experiment people
The problems such as member is uncomfortable.Because in the winter in Han Leng winter, especially China northeast, the temperature of outdoor air is very low, leads to
Often reach subzero, thus if directly filled into the outdoor air of this cold in laboratory hood, can cause from room
This Cryogenic air filled into outside intersects with the normal temperature air that fills into of interior and mixes, cause the sliding door form of laboratory hood haze or
Person condenses, and is unfavorable for being smoothed out for experiment, while experimenter can also feel additional uncomfortable due to too low air temperature,
Continuing for experimenter's experiment is influenced, the discomfort of experimenter's body is even caused, for example catches a cold, catches a cold.
To solve the above problems, Chinese utility model patent document CN202741410U discloses compensating ventilation cabinet in a kind of heating
Steel-aluminum structure laboratory hood system, compensating ventilation cabinet steel-aluminum structure laboratory hood system includes the benefit of vent cabinet in the heating
Wind system, it is specific as follows：Because of the difference of each room configuration vent cabinet quantity, and at the same time the difference of quantity is opened, therefore it is each logical
Corresponding benefit wind turbine and air-valve need to be separately configured in wind cabinet.Consider winter experimenter's health demand and power conservation requirement, lead to per 3-5 platforms
Wind cabinet sets a set of benefit fresh air filtering and heating case, and heat source is 65 degree of hot water of outer net.Benefit wind is derived from the wind-supplying mouth set by each room exterior wall.
The operation of air box low noise is mended, noise is less than 48 decibels, and winter mends air temperature and is more than 10 DEG C of designs, need to configure heating coil.
Although compensating ventilation cabinet steel-aluminum structure laboratory hood system in the heating that above patent document provides, in vent cabinet
Heating unit is configured in air-makeup system, to heat the cold new air covered from outdoor, so as to avoid causing testing
Personnel such as catch a cold, catch a cold at other uncomfortable problems.But the heating unit configured in the vent cabinet air-makeup system is to pass through setting
Then one heater box is outside one's consideration net hot water to heat heater box with 65 again, and then it is new empty to flow through the cold outdoor in heater box
After heat exchange, temperature is raised gas, and so as to complete the heating process of new air, i.e., the heating system is by with hot empty
The heat exchange mode of gas and cold air completes heating, and heating process is complicated, and heating process is slow, and the efficiency of heating surface is not
It is high.
Chinese utility model patent document CN200720037118 discloses a kind of use heat exchanger heating source impregnation and does
Dry machine heated air circulation device including baking oven, wind-supplying mouth, hot-air system and dehumidification system, is equipped with heat exchanger on wind-supplying mouth, heat
Exchanger is located at outside oven, and the air outlet of heat exchanger is connected with the wind-supplying mouth of oven or heat exchanger is located in oven, heat
The air inlet of exchanger is docked with the wind-supplying mouth of oven.What i.e. the patent document provided is a kind of using heat exchanger heating source impregnation
Drying machine heated air circulation device and the new air in outdoor by heating cold in wind-supplying mouth setting heat exchanger, so as to rise
Arrived the effect for the temperature for improving cold new air, but with foregoing utility model patent document disclosed in compensating ventilation cabinet in a kind of heating
Steel-aluminum structure laboratory hood system is similar, and there is also add for the heat exchanger heating source drier hot-blast circulation equipment of dipping
The problem of thermal process is complicated, and heating process is slow, and the efficiency of heating surface is not high.
In conclusion how to improve the temperature of the new air in cold outdoor filled into laboratory hood, avoid causing sliding door
Glass hazes or condenses, and improves the comfort in experimenter's experimentation, while can improve the efficiency of heating surface as this field
One of urgent problem to be solved.
The content of the invention
To solve the above-mentioned problems, cold new air, heating effect can be directly heated it is an object of the invention to provide a kind of
The high laboratory hood with duct heater of rate.
To achieve the above object, the laboratory hood provided by the invention with duct heater including cabinet, is set in cabinet
Mend wind passage is equipped with, is provided with to supplement the benefit wind entrance of air into mend wind passage on cabinet, is provided in mend wind passage
The additional thermal modules of electricity fill into from benefit wind entrance for heating and flow through the air of mend wind passage.
Further, the inside of mend wind passage and it is provided with splitter with mending the opposite place of wind entrance.
Preferably, in mend wind passage, the both sides of splitter are respectively arranged with one group of additional thermal modules of electricity.
Further, the additional thermal modules of electricity are fixed on the air draft cabinet panel for the both sides for mending wind entrance.
Preferably, the additional thermal modules of electricity include heater element, mica insulation plate and stent, and it is exhausted that heater element is wound in mica
On listrium, mica insulation plate is fixedly installed on stent, and stent is fixed on the air draft for the both sides for mending wind entrance by fixing device
On the panel of cabinet.
Further, the additional thermal modules of electricity are externally connected to temperature sensor, for detecting the temperature of air in mend wind passage
Degree.
Preferably, the laboratory hood with duct heater further includes controller, controller respectively with temperature sensor and
The additional thermal modules electrical connection of electricity, for controlling the temperature of the additional thermal modules heating of electricity.
Further, controller includes display device, for showing the temperature of air in mend wind passage.
Preferably, the laboratory hood with the additional thermal of electricity further includes one or more wind-supplying mouth, and wind-supplying mouth is with mending wind
Passage communicates, for the air after electricity additional thermal modules heating is filled into laboratory hood working chamber in.
Further, wind-supplying mouth is provided with the mesh grille for covering the wind-supplying mouth.
As above, it is additional to be provided with electricity in mend wind passage for the laboratory hood provided by the present invention with duct heater
Thermal modules are directly heated by the additional thermal modules of electricity from the new air in outdoor for mending cold that wind entrance fills into, and raising is filled into
The outdoor new air of cold temperature, so as to which the sliding door glass for avoiding causing laboratory hood hazes or condenses, improve experiment people
Comfort in member's experimentation, and heat directly, heating process is quick, and the efficiency of heating surface is high, and heating effect is good, is worth extensive
It promotes the use of.
The above to allow the present invention can be clearer and more comprehensible, preferred embodiment cited below particularly, and with reference to attached drawing, be made detailed
It is described as follows.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Fig. 1 is the structure diagram for the laboratory hood with duct heater that a preferred embodiment of the invention provides；
Fig. 2 is the top view for the laboratory hood with duct heater that a preferred embodiment of the invention provides；
Fig. 3 is the stereoscopic schematic diagram for the laboratory hood with duct heater that a preferred embodiment of the invention provides；
Fig. 4 is the benefit wind without top for the laboratory hood with duct heater that a preferred embodiment of the invention provides
The partial enlarged view of passage；
Fig. 5 is the benefit without top for the laboratory hood with duct heater that another preferred embodiment of the present invention provides
The partial enlarged view of wind passage；
Fig. 6 is the additional thermal modules of electricity for the laboratory hood with duct heater that a preferred embodiment of the invention provides
Structure diagram.
Component label instructions
100 cabinets
200 mend wind entrance
300 splitters
400 mend wind passages
The 500 additional thermal modules of electricity
510 heater elements
520 mica insulation plates
530 stents
540 fixing devices
600 temperature sensors
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this specification
Revealed content understands other advantages and effect of the present invention easily.Although description of the invention will combine preferred embodiment
It introduces together, but this feature for not representing the invention is only limitted to the embodiment.On the contrary, it is invented with reference to embodiment
The purpose of introduction is to cover based on claim of the invention and it is possible that the other selections or transformation extended.In order to carry
Understand for the depth to the present invention, many concrete details will be included in being described below.The present invention can not also use these thin
Section is implemented.In addition, in order to avoid the emphasis of the chaotic or fuzzy present invention, some details will be omitted in the de-scription.
" on ", " under ", "left", "right", " top ", " bottom ", are based on the air draft in addition, used in the following description
Spatial position when cabinet is by laboratory experiment personnel's use and define, should not be construed as limiting the invention.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the present invention provides a kind of air drafts with duct heater
Cabinet including cabinet 100, is provided with mend wind passage 400, is provided on cabinet 100 for into mend wind passage 400 in cabinet 100
The benefit wind entrance 200 of air is supplemented, the additional thermal modules 500 of electricity are provided in mend wind passage 400, for heating from benefit wind entrance
200 fill into and flow through the air of mend wind passage 400.
Laboratory hood directly fills into laboratory into working chamber in actual use, except through working chamber open front
Outside interior air, it is then directly to be filled into outdoor air in working chamber by air-makeup system to also have some, thus, it is needed in laboratory hood
The mend wind passage flowed through for outdoor air is set.Mend wind passage can be that partition plate is set in laboratory hood so as to be formed with cabinet
Hollow structure, for example set on the top of cabinet and form hollow knot at the top of partition plate and cabinet across cabinet or so width
Structure, the hollow structure is i.e. as mend wind passage, naturally it is also possible to by with laboratory hood side wall or bottom formed hollow structure come
Form mend wind passage.The mend wind passage formed is by the way that at the top of cabinet, side wall or bottom setting opening, extraneous air is led to
It crosses these openings and fills into working chamber.
In this preferred embodiment, it is preferable that illustrated by taking the mend wind passage with being formed at the top of cabinet as an example.Due in reality
Border is in use, directly fill into air in laboratory hood working chamber by mend wind passage as outdoor air, and in cold winter, this
The temperature for the outdoor air that kind directly fills into is generally all in subzero, and in cold districts such as northeast, temperature is even more to reach
Subzero 10 degree, minus 20 degrees, it is 30 degree even subzero, this sub-zero cold air is directly filled into laboratory hood working chamber
The sliding door glass of laboratory hood is often caused to haze, condense afterwards, while the uncomfortable problem that experimenter can also be caused to test, very
Extremely experimenter may be caused to catch a cold, catch a cold.Thus, as shown in Fig. 1 to Fig. 5, a preferred embodiment of the invention is carried
The laboratory hood with duct heater supplied is provided with to heat the electricity of filled into cold air in mend wind passage 400
Additional thermal modules 500 so that the cold air filled into from benefit wind entrance 200, it is additional by electricity during mend wind passage 400 is flowed through
Thermal modules 500 heat, in the working chamber for flowing to laboratory hood after heating again, so that finally filling into work from mend wind passage 400
The air of intracavitary is no longer cold air, but the hot-air after heating, and avoids causing the sliding door glass of laboratory hood from hazing or tie
Dew also avoids experimenter from touching cold outdoor air, improves the comfort of experimenter's experiment.
Further, as shown in Figure 4, the row with duct heater that a preferred embodiment of the invention is provided
In wind cabinet, the opposite place of the inside of mend wind passage 400, benefit wind entrance 200 is provided with splitter 300.Here, splitter 300
For two-way will to be divided into from mending the air that fills into of wind entrance 200, it is made to be flowed respectively to 100 left and right sides of cabinet, and shunted
Piece 300 may be disposed at from anywhere in 400 inside of mend wind passage, and certain those skilled in the art will be understood that in mend wind passage
Also splitter 300 can be not provided in 400.In this preferred embodiment, it is preferable that splitter 300 is set in mend wind passage 400,
And it is positioned in the place opposite with mending wind entrance 200 so that the new air filled into through mending wind entrance 200 can be equably to cabinet
The left and right sides flowing of body 100.
Preferably, in the laboratory hood with duct heater that a preferred embodiment of the invention is provided, mend wind and lead to
On road 400, the both sides of splitter 300 be respectively arranged with one group of additional thermal modules 500 of electricity.
Here, in this preferred embodiment, it is preferable that benefit wind entrance 200 is arranged to the centre position at 100 top of cabinet,
Splitter 300, which is preferably provided at, simultaneously mends the opposite place of wind entrance 200.Certainly, those skilled in the art will be understood that
The left side at 100 top of cabinet can also be arranged at either other of the right or cabinet 100 are Anywhere by mending wind entrance 200.Tool
Body, as shown in Figure 1 to Figure 4 shown in, mend wind passage 400 is the hollow structure formed with 100 top of cabinet, mends wind entrance 200
The middle position in the top of external cabinet 100 in the hollow structure is arranged at, is communicated with the air outside laboratory,
Air outside laboratory can enter the hollow structure by mending wind entrance 200, i.e., in mend wind passage 400, and lead to mending wind
It is split in road 400 after piece 300 shunts along passage both sides flowing to the left and right.Thus, in order to make the cold sky of both sides flowing to the left and right
Gas can be heated, and improve heating effect, the efficiency of heating surface, and as shown in Figure 4, what this preferred embodiment was provided carries air passage
The laboratory hood of heating unit is in mend wind passage 400, the left and right sides of splitter 300 is each provided with the additional thermal modules of electricity
500, it is respectively used to heating and 400 left side of mend wind passage is flowed to after the shunting of splitter 300 and flows to the sky on 400 right side of mend wind passage
Gas, so that the cold gas directly filled into outside laboratory can be heated, homogeneous heating, heating effect is good, heating
It is efficient.
Certain those skilled in the art for the limitation of additional 500 quantity of thermal modules of electricity it will be understood that be only used as excellent
Embodiment is selected to illustrate, i.e., can the one additional heat of electricity only be installed in the benefit wind inlet for filling into outdoor air in mend wind passage 400
Module 500 carries out the heating of air.As shown in Figure 5, what another preferred embodiment of the present invention provided adds with air passage
The laboratory hood of thermal only need to install the additional thermal modules 500 of an electricity to complete the heating process of air in mend wind passage 400.
In addition, the additional thermal modules 500 of electricity of three or three or more can certainly be installed in mend wind passage 400 to complete air
Heating process.
Preferably, in the laboratory hood with duct heater provided in a preferred embodiment of the invention, electricity is auxiliary
Heating module 500 is fixed on the panel of the laboratory hood for the both sides for mending wind entrance 200, as shown in Figure 1 to Figure 3.Specifically, it is electric
The fever end of additional thermal modules 500 is located in mend wind passage 400, while another opposite with the end that generates heat of the additional thermal modules 500 of electricity
End is then fixedly installed on the panel of the laboratory hood for the both sides for mending wind entrance 200, that is, is fixedly installed in the outside of cabinet 100, is made
Must dismantle, to install the entire additional thermal modules 500 of electricity simpler, conveniently, also provided to repair, replacing the additional thermal modules 500 of electricity
Great convenience.
More specifically, as shown in Figure 6, the row with duct heater that a preferred embodiment of the invention is provided
The additional thermal modules 500 of electricity of wind cabinet include heater element 510, mica insulation plate 520 and stent 530, and heater element 510 is wound in
On mica insulation plate 520, mica insulation plate 520 is fixedly installed on stent 530, and stent 530 is fixed on by fixing device 540
On the panel for mending the laboratory hood of the both sides of wind entrance 200.Here, because nichrome bare wire circle is high, long-term with high temperature strength
The material that cools down again after use will not become fragile, have the advantages that preferable heat resistance and corrosion resistance, in the present embodiment, heater element
510 preferably by nichrome bare wire circle, and by heater element 510, i.e. nichrome bare wire circle is wound in mica insulation plate
On 520, expand the contact area of nichrome bare wire circle and air in mend wind passage 400, improve the efficiency of heating surface, have good
Heating effect.Further, as shown in Figure 4, the mica insulation plate 520 for being wound with nichrome bare wire circle is fixedly installed in branch
On frame 530, while stent 530 is fixed on by fixing device 540 on the panel of the laboratory hood for the both sides for mending wind entrance 200, side
Just replacement, repair or cleaning are removed.In addition, fixing device 540 can be screw, bolt, rivet etc. other any can will prop up
Frame 540 is fixed on the fixing piece in cabinet 100.
Although for filling into the cold gas in laboratory hood working chamber outside laboratory, the shifting of laboratory hood is caused in order to prevent
Door glass hazes, condenses, also to prevent from causing uncomfortable problem in experimenter's experimentation, it is necessary to outdoor to being filled into
Cold gas is heated.But be not to say that for the heating temperature of air in mend wind passage 400 it is the higher the better, such as
It says, some experiments cannot carry out in excessive temperature, and if the outside air temperature filled at this time is excessively high, it certainly will
Experimental result can be influenced, even influences the progress of experiment；It says for another example, if temperature is excessively high, can cause experimenter
Feel too hot or cause hot etc. uncomfortable happen.Certainly if heating dynamics is inadequate, can to fill into
Cold gas heating effect unobvious can still cause the sliding door glass of laboratory hood to haze, condense, cause experimenter's experimentation
In uncomfortable problem, such as the problems such as catch a cold, catch a cold.It is then desired to the heating temperature of the air in mend wind passage 400 into
Row detects and controls accordingly, hinders to avoid excessively high either too low bring to experimentation of temperature of heating or causes reality
It tests uncomfortable in personnel's experimentation.To solve the above problems, a preferred embodiment of the invention provided with air passage
The additional thermal modules 500 of electricity of the laboratory hood of heating unit are externally connected to temperature sensor 600, for detecting mend wind passage 400
The temperature of the air of interior flowing, prevent it is heat-treated after air temperature it is excessively high or too low, it is foregoing described so as to occur
Various influences experiment carry out, cause the uncomfortable problem of experimenter.
Further, the laboratory hood with duct heater further includes controller, controller respectively with temperature sensing
Device 600 and the additional thermal modules 500 of electricity are electrically connected, for controlling the temperature that the additional thermal modules 500 of electricity heat.Meanwhile on controller
Display device is provided with, for showing the temperature of air in mend wind passage 400.Here, controller can be according to experimenter's
It needs to carry out pre-seting for required temperature, i.e., experimenter can set required reservation temperature value.Temperature sensor 600 will be examined
The temperature signal of the air in mend wind passage 400 measured passes to controller, and can be shown by the display device on controller
Current temperature value is shown, controller by current temperature value compared with the reservation temperature value that experimenter sets, if currently
Temperature value is equal with subscribing temperature value or differs within the acceptable range, then it does not refer to the additional transmission of thermal modules 500 of electricity
Order does not control the additional thermal modules 500 of electricity to heat up or cool down；If the current temperature value degree lower and low than subscribing temperature value
It has been more than acceptable scope, then it automatically controls the additional thermal modules 500 of electricity and carries out heating treatment, to improve mend wind passage 400
The temperature of interior air, so as to reach the temperature that experimenter wants；If likewise, current temperature value than subscribe temperature value it is high,
And high degree has been more than acceptable scope, then it automatically controls the additional thermal modules 500 of electricity and carries out cooling processing, is mended with reducing
The temperature of air in wind passage 400.It is of course also possible to by experimenter by controller by the sky in mend wind passage 400
The temperature of gas is controlled in its desired scope, such as, if the Current Temperatures shown in display device are higher or relatively low,
Experimenter can be adjusted manually, to reduce or raise temperature.Thus, the laboratory hood that this preferred embodiment is provided leads to
Set temperature sensor 600 and controller are crossed to control the heating temperature of the air in mend wind passage 400, avoids heating temperature mistake
It is high either it is too low to experimentation or experimenter cause hinder or it is uncomfortable, improve in experimenter's experimentation
Comfort level.
Further, in this preferred embodiment, one or more wind-supplying mouth is provided on cabinet 100, wind-supplying mouth is with mending
Wind passage 400 communicates, for the air after the additional thermal modules 500 of electricity heat is filled into laboratory hood working chamber in.Further
Ground is provided with mesh grille on wind-supplying mouth, for the scattered benefit general mood stream blown out through the wind-supplying mouth, ensure that from wind-supplying mouth to
Uniform and stable benefit general mood stream is filled into laboratory hood working chamber.
Laboratory hood disclosed by the invention with duct heater is provided with the additional thermal modules of electricity in mend wind passage,
It is directly heated by the additional thermal modules of electricity from the new air in outdoor for mending cold that wind entrance fills into, so as to avoid causing laboratory hood
Sliding door glass haze or condense, improve the comfort in experimenter's experiment, and heat direct, heating process is fast
Speed, the efficiency of heating surface is high, and heating effect is good, and should be widely promoted use.
In conclusion it is provided by the invention the above-described embodiments merely illustrate the principles and effects of the present invention rather than
For limiting the present invention.Any person skilled in the art all can be under the spirit and scope without prejudice to the present invention, to above-mentioned reality
It applies example and carries out modifications and changes.Therefore, such as those of ordinary skill in the art without departing from disclosed
Spirit and all equivalent modifications for being completed under technological thought or change, should be covered by the claim of the present invention.
Claims (10)
1. a kind of laboratory hood with duct heater including cabinet, is provided with mend wind passage, the cabinet in the cabinet
On be provided with for into the mend wind passage supplement air benefit wind entrance, which is characterized in that set in the mend wind passage
There are the additional thermal modules of electricity, filled into for heating from the benefit wind entrance and flow through the air of the mend wind passage.
2. the laboratory hood according to claim 1 with duct heater, which is characterized in that in the mend wind passage
The internal and place opposite with the benefit wind entrance is provided with splitter.
3. the laboratory hood according to claim 2 with duct heater, which is characterized in that in the mend wind passage
The both sides of upper, described splitter are respectively arranged with the additional thermal modules of electricity described in one group.
4. the laboratory hood according to claim 3 with duct heater, which is characterized in that the additional thermal modules of electricity
It is fixed on the panel of the laboratory hood of the both sides of the benefit wind entrance.
5. the laboratory hood according to claim 4 with duct heater, which is characterized in that the additional thermal modules of electricity
Including heater element, mica insulation plate and stent, the heater element is wound on the mica insulation plate, the mica insulation
Plate is fixedly installed on the stent, and the stent is fixed on the air draft of the both sides of the benefit wind entrance by fixing device
On the panel of cabinet.
6. the laboratory hood according to claim 1 with duct heater, which is characterized in that the additional thermal modules of electricity
Temperature sensor is externally connected to, for detecting the temperature of air in the mend wind passage.
7. the laboratory hood according to claim 6 with duct heater, which is characterized in that described to be heated with air passage
The laboratory hood of device further includes controller, and the controller is electrically connected respectively with the temperature sensor and the additional thermal modules of electricity
It connects, for controlling the temperature of the additional thermal modules heating of the electricity.
8. the laboratory hood according to claim 7 with duct heater, which is characterized in that the controller includes aobvious
Showing device, for showing the temperature of air in the mend wind passage.
9. the laboratory hood according to claim 1 with duct heater, which is characterized in that the laboratory hood further includes
One or more wind-supplying mouth, the wind-supplying mouth are communicated with the mend wind passage, for that will be heated through the additional thermal modules of the electricity
Air afterwards is filled into the working chamber of the laboratory hood.
10. the laboratory hood according to claim 9 with duct heater, which is characterized in that the wind-supplying mouth is set
There is the mesh grille for covering the wind-supplying mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611032244.3A CN108080385A (en) | 2016-11-22 | 2016-11-22 | A kind of laboratory hood with duct heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611032244.3A CN108080385A (en) | 2016-11-22 | 2016-11-22 | A kind of laboratory hood with duct heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108080385A true CN108080385A (en) | 2018-05-29 |
Family
ID=62168717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611032244.3A Pending CN108080385A (en) | 2016-11-22 | 2016-11-22 | A kind of laboratory hood with duct heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108080385A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843247A (en) * | 2021-11-02 | 2021-12-28 | 上海卫蓝节能科技有限公司 | Air-supplementing air-intake energy-saving exhaust cabinet |
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| CN113843247A (en) * | 2021-11-02 | 2021-12-28 | 上海卫蓝节能科技有限公司 | Air-supplementing air-intake energy-saving exhaust cabinet |
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Application publication date: 20180529 |