CN108240765A - Two fans hot air drying system and two fans air drying methods - Google Patents
Two fans hot air drying system and two fans air drying methods Download PDFInfo
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- CN108240765A CN108240765A CN201810025354.XA CN201810025354A CN108240765A CN 108240765 A CN108240765 A CN 108240765A CN 201810025354 A CN201810025354 A CN 201810025354A CN 108240765 A CN108240765 A CN 108240765A
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- 238000007602 hot air drying Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007605 air drying Methods 0.000 title claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 156
- 238000010438 heat treatment Methods 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000012855 volatile organic compound Substances 0.000 abstract description 15
- 238000004064 recycling Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 92
- 208000028659 discharge Diseases 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention provides a kind of two fans hot air drying system and two fans air drying methods, belong to drying device field.Two fans hot air drying system includes：Exhaust duct, one end of exhaust duct are connected with exhaust fan；Drying unit, drying unit include intake stack, wind pipe and drying box；Intake stack is used to the gas in exhaust duct being introduced into drying box；Wind pipe is used to the gas in drying box being introduced into exhaust duct.Two fans air drying methods include the following steps：Exhaust fan frequency is adjusted, exhaust duct is made to be in micro-vacuum state；The frequency of each air-out blower fan is adjusted, is made in its corresponding drying box in micro-vacuum state.This two fans hot air drying system and two fans air drying methods can realize the recycling to exhaust gas, improve the concentration of VOCs in exhaust gas, and will not generate mutual interference between the air quantity of different drying units.
Description
Technical field
The present invention relates to drying device field, in particular to a kind of two fans hot air drying system and two fans heat
Air-dry drying method.
Background technology
Drying system is printing, compound, coating, spraying, the spray painting main energy consumption unit of production equipment, is also simultaneously
The primary discharge source of exhaust gas, drying system efficiency are the core parameters of production equipment Performance Evaluating Indexes.
Traditional drying system：Traditional drying system is generally adopted by more drying unit block form drying systems, respectively
Unit drying box air inlet directly sucks air for unit independent air intake mouth from Workplace, and each unit drying box air draft accesses side by side
A piece total exhaust duct is by an exhaust fan traction discharge.
Block form drying system with return air：There are also the improvement projects based on block form drying system, are done in unit
Increase by one section of backwind tube in the exhaust pipeline and air inlet pipeline of dry case, a part of return air is made to be recycled into drying box, it so can be with
Total air draft of drying system is reduced in the case where ensureing dry air quantity.
Tandem drying system：Patent publication No CN105444536A is disclosed " a kind of tandem drying system ".Can have
Imitate the exhaust air rate of drying system.
Total exhaust air rate of traditional drying system be approximately equal to each unit drying air quantity summation, and in order to ensure dry mass and
Rate of drying, dry air quantity all cannot be too small, and total air draft of such drying system is all with the low spy of Wind Volume, VOCs concentration
Point, this can bring the big a series of problems of heating high energy consumption, VOCs difficulty of governance.
Block form drying system with return air, theoretically can be total to effectively reduce system by adjusting the return air amount of each unit
Exhaust air rate, but the adjusting of return air amount is extremely difficult, considers safety factor first, return air amount is excessive may to cause VOCs in baking oven dense
Degree is more than safety limit；Additionally, due to the air draft of each unit drying box, a piece total exhaust duct of access is drawn by an exhaust fan side by side
Discharge, it is also contemplated that influencing each other between each unit；Therefore in actual use, production operation personnel usually will not in actual production
Intense adjustment frequently is carried out to return air amount, but in order to meet most of technique, return air amount is generally adjusted smaller, this is just
The practical exhaust air rate for leading to drying system in most cases is still very big.
The relatively traditional block form drying system of tandem drying system at least has the following disadvantages.
First, drying unit number more demanding to drying box seal using tandem, and connecting in practical applications
Amount is unsuitable excessive, and main cause is exactly to be leaked out for the gas reduced in dry, and general drying box is required for being adjusted in micro- negative
Pressure condition, the gas on such periphery are drawn into some into drying box, and eventually leading to air quantity on entire series pipe can be according to
Secondary increase, the seal of drying box is poorer, the quantity of series connection is more, and increased air quantity is bigger in the process, and dries air quantity mistake
Chromatography precision may be influenced greatly.
Second, in actual production, for certain products, the drying unit of drying system does not need to whole work, but go here and there
In connection formula drying system, whether when or not when there is drying unit not work, the drying box of this element still must as gas channel
There need be air-flow to pass through, the breeze fan of this element must also work, this can undoubtedly increase unnecessary leakage and energy consumption.
Invention content
The present invention provides a kind of energy-saving hot-blast drying systems, it is intended to solve energy-saving hot-blast drying system in the prior art and deposit
The above problem；
The present invention also provides a kind of energy-saving hot-blast drying means, it is intended to solve energy-saving hot-blast drying means in the prior art
The existing above problem.
The invention is realized in this way：
A kind of two fans hot air drying system, including：
Exhaust duct；
Drying unit, the drying unit are set as multiple, and multiple drying units extend along the exhaust duct
Direction be arranged at intervals；
The drying unit includes intake stack, wind pipe and drying box；
One end of the intake stack is connected with the drying box, the other end of the intake stack and the exhaust duct
It connects, air intake blower fan is connected on the intake stack, the air intake blower fan is used to discharge the gas in the exhaust duct
Into the drying box；
One end of the wind pipe is connected with the drying box, the other end of the wind pipe and the exhaust duct
It connects, air-out blower fan is connected on the wind pipe, the air-out blower fan is used to the gas in the drying box being discharged to
In the exhaust duct.
In preferred embodiments of the present invention, one end of the exhaust duct is connected with exhaust fan, the exhaust fan
For the gas in the exhaust duct to be discharged.
In preferred embodiments of the present invention, the first heating member, first heating member are provided on the intake stack
For being heated for the gas in the intake stack.
In preferred embodiments of the present invention, the second heating member, second heating member are provided on the wind pipe
For being heated for the gas in the wind pipe.
In preferred embodiments of the present invention, air supply duct, one end of the air supply duct and the exhaust duct are further included
Road connects, and the air supply duct is arranged on one end far from exhaust duct internal gas flow direction on the exhaust duct, institute
The other end for stating air supply duct is connected with breeze fan, and the breeze fan is used to the gas in external environment being sent to described
In air supply duct.
In preferred embodiments of the present invention, first heating member is electric heater, and second heating member is heat exchange
Device.
In preferred embodiments of the present invention, third heating member, the third heating member are provided on the air supply duct
For being heated for the gas in the air supply duct.
In preferred embodiments of the present invention, one end far from the exhaust duct is connected with air draught on the air supply duct
Pipeline, has multiple fresh wind ports on the air-suction duct, and multiple fresh wind ports are arranged at intervals on the air-suction duct.
In preferred embodiments of the present invention, the exhaust fan and the air-out blower fan use frequency conversion fan；
First pressure sensor is installed, the first pressure sensor is used to measure the air draft on the exhaust duct
Air pressure in pipeline；
Second pressure sensor is installed, the second pressure sensor is used to measure the drying box on the drying box
In air pressure；
The first pressure sensor, the second pressure sensor, the exhaust fan and the air-out blower fan and
Controller is electrically connected, and the controller is used for according to the signal of the first pressure sensor and the second pressure sensor point
The frequency of the exhaust fan and the air-out blower fan is not controlled.
A kind of two fans air drying methods, include the following steps：
Exhaust fan frequency is adjusted according to the value of feedback of first pressure sensor, is made in exhaust duct in tiny structure shape
State；
The frequency of each air-out blower fan is adjusted, is made in its corresponding drying box in micro-vacuum state；
If the frequency of the air-out blower fan is adjusted to highest, the wind pressure of the inside of corresponding drying box is still above tiny structure
Exhaust fan frequency is then turned up to reduce pressure in exhaust duct in state, until the inside of corresponding drying box is in tiny structure
State or exhaust fan frequency reach highest limit value；
Wherein, micro-vacuum state is in for relative pressure between -100Pa~0Pa.
The beneficial effects of the invention are as follows：
The two fans hot air drying system that the present invention is obtained by above-mentioned design when in use, can utilize air inlet
Gas in exhaust duct is introduced into drying box by pipeline, and the gas inside drying box is introduced into air draft using wind pipe
In pipeline, using exhaust duct, gas can be discharged, so as to realize that the portion gas flowed into intake stack is outlet air
The gas discharged in pipeline, so as to realize the recycling of exhaust gas, and since drying unit is multiple interval settings, so as to
It is exhaust duct upstream that can realize the gas part flowed into the intake stack in the drying unit in exhaust duct downstream
Drying unit in the gas discharged in wind pipe, so as to realize the recycling to exhaust gas, advantageously reduce exhaust gas
Discharge improves the concentration of VOCs in exhaust gas.And the air quantity between each drying unit is separately adjustable, so as to different drying units
Air quantity between will not generate mutual interference, when partially dried unit does not need to work, it is only necessary to be turned off i.e.
It can.And it is the highest position of VOCs concentration in exhaust gas in the drying box of the most downstream of exhaust duct, so as to only need to align
It is monitored in the exhaust gas discharged in the drying box of the most downstream of exhaust duct, you can ensure the safety of whole system, be conducive to
Improve the safety used.
Two fans air drying methods provided by the invention when in use, make row by adjusting exhaust fan frequency
The gas that can be reduced in external environment in micro-vacuum state in wind pipeline is let out by idle drying unit into system
The amount of leakage reduces invalid air draft；Made in its corresponding drying box in micro-vacuum state by adjusting air-out blower fan frequency, it can be with
So that the gas inside drying box will not be flowed out from gap, and the gas in external environment is less by being flowed into gap
The inside of drying box reduces the inflow of the gas in external environment, reduces invalid air draft.
Description of the drawings
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram for the two fans hot air drying system that embodiment of the present invention provides；
Fig. 2 is the structural representation for the two fans hot air drying system with air-suction duct that embodiment of the present invention provides
Figure；
Fig. 3 is the structure diagram of the drying unit in the two fans hot air drying system that embodiment of the present invention provides；
Fig. 4 is the structure diagram of the air supply duct in the two fans hot air drying system that embodiment of the present invention provides.
Icon：100- two fans hot air drying systems；110- exhaust ducts；111- upstreams；112- first pressure sensors；
113- downstreams；114- exhaust fans；120- air supply ducts；121- third heating members；122- breeze fans；123- air-suction ducts；
124- fresh wind ports；130- drying units；131- intake stacks；132- air intake blower fans；The first heating members of 133-；134- drying boxes；
135- second pressure sensors；136- wind pipes；137- air-out blower fans；The second heating members of 138-.
Specific embodiment
Purpose, technical scheme and advantage to make embodiment of the present invention are clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is the embodiment of a part of embodiment of the present invention rather than whole.Based on the embodiment in the present invention, ability
The every other embodiment that domain those of ordinary skill is obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, below the detailed description of the embodiments of the present invention to providing in the accompanying drawings be not intended to limit will
The scope of the present invention of protection is sought, but is merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained without creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that the term of indicating position or position relationship is based on shown in attached drawing
Orientation or position relationship, be for only for ease of the description present invention and simplify description rather than instruction or imply signified equipment
Or element must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be on or below second feature
Be in direct contact including the first and second features, can also include the first and second features not be in direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature second spy
Right over sign and oblique upper is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature it
Under, lower section and fisrt feature included below immediately below second feature and obliquely downward or be merely representative of fisrt feature level height
Less than second feature.
Embodiment one
A kind of two fans hot air drying system 100 is present embodiments provided, is please referred to Fig.1, Fig. 2, Fig. 3 and Fig. 4, it is this
Two fans hot air drying system 100 includes：
Exhaust duct 110；
Drying unit 130, drying unit 130 are set as multiple, and multiple drying units 130 extend along exhaust duct 110
Direction be arranged at intervals；
Drying unit 130 includes intake stack 131, wind pipe 136 and drying box 134；
One end of intake stack 131 is connected with drying box 134, and the other end and exhaust duct 110 of intake stack 131 connect
It is logical, air intake blower fan 132 is connected on intake stack 131, air intake blower fan 132 is used to the gas in exhaust duct 110 being discharged to
In drying box 134；
One end of wind pipe 136 is connected with drying box 134, and the other end and exhaust duct 110 of wind pipe 136 connect
It is logical, air-out blower fan 137 is connected on wind pipe 136, air-out blower fan 137 is used to the gas in drying box 134 being discharged to
In wind pipeline 110.
Intake stack 131 on multiple drying units 130 is that one end is connected with drying box 134 with wind pipe 136, separately
One end is connected with exhaust duct 110, and when in use, the intake stack 131 on each drying unit 130 is from exhaust duct
Gas is absorbed in 110, and exhaust gas is drained into exhaust duct 110 by the wind pipe 136 on each drying unit 130,
Portion gas so as to realize the sucking of the intake stack 131 in drying unit 130 is the discharge pipe in the drying unit 130
The gas discharged in road 136, also, sucked in the intake stack 131 on the drying unit 130 in 110 downstream 113 of exhaust duct
The gas discharged in the wind pipe 136 being divided on the drying unit 130 of 110 upstream 111 of exhaust duct in the middle part of gas, so as to
To realize that being discharged to exhaust gas in each wind pipe 136 can be recycled, and arrange so as to reduce in exhaust duct 110
The gas gone out is conducive to improve the concentration of VOCs in exhaust gas.
Since the intake stack 131 on each drying unit 130 and exhaust duct 110 are connected with exhaust duct 110, from
And working independently between each drying unit 130, reciprocal influence will not be generated, so as to by each drying unit
The control of intake stack 131 in 130 and the air-flow in exhaust duct 110 controls the stream of the gas of each drying unit 130
Amount and air pressure, realize the inside of each drying box 134 with different work statuss, and do not need to work in partially dried unit 130
It when work, is directly turned off, other drying units 130 will not be impacted.
Also, the gas in exhaust duct 110 can be discharged to using air intake blower fan 132 by intake stack 131 dry
In dry case 134, the gas in drying box 134 exhaust duct can be discharged to by wind pipe 136 using air-out blower fan 137
In 110, by controlling the i.e. controllable flow of gas discharged from drying box 134 of frequency of air-out blower fan 137, so as to
By controlling the frequency of each air intake blower fan 132 and each air-out blower fan 137, the inside that can cause each drying box 134 is equal
The state of tiny structure is kept, the gas inside drying box 134 can be caused not flowed out from gap, and in external environment
The inflow of the gas in external environment is reduced in the less inside by being flowed into drying box 134 in gap of gas, reduces invalid row
Wind.
What deserves to be explained is the flow of the air-out blower fan 137 of selection should be greater than the flow of air intake blower fan 132.
Optionally, in the present embodiment, one end of the exhaust duct 110 is connected with exhaust fan 114, the air draft wind
Machine 114 is used to discharge the gas in the exhaust duct 110.
Exhaust fan 114 can discharge the gas in exhaust duct 110 according to scheduled flow direction, each drying unit
The gas discharged in 130 is discharged by exhaust duct 110, during discharge, the gas close to the outlet of exhaust duct 110
The concentration of body is more than the concentration of the gas of the outlet far from exhaust duct 110, and exporting recently apart from exhaust duct 110
It is the highest position of VOCs concentration in system in drying box 134, so as to by discharge exhaust gas in the drying box 134
VOCs concentration, which is monitored, controls the concentration of the VOC of whole system to realize, apart from the outlet of exhaust duct 110 most
When the concentration of VOC in the gas discharged near drying box 134 is no more than safe concentration, whole system is in safety
State so as to simplify the detection to system safety, improves the safety of system.
In the present embodiment, the first heating member 133 is provided on intake stack 131, the first heating member 133 is used for as air inlet
Gas heating in pipeline 131.
First heating member 133 is heated for the gas in intake stack 131 so that is flowed into from intake stack 131 dry
The temperature of gas in dry case 134 can reach the temperature of job requirement.
Heating wire may be used in first heating member 133, can also use high-temperature medium.
Wherein, high-temperature medium includes but not limited to：Hot water, conduction oil, steam, hot wind.
Using high-temperature medium as heat source, the cheap heat source such as the waste heat to burned waste gas device, solar energy can be facilitated
It utilizes, so as to improve the economic benefit of drying system.
Optionally, in the present embodiment, the second heating member 138 is provided on wind pipe 136, the second heating member 138 is used
It is heated in for the gas in wind pipe 136.
Second heating member 138 is heated for the gas in wind pipe 136 so that the row of inflow from wind pipe 136
Gas in wind pipeline 110 can be preheated.
Heating wire may be used in second heating member 138, can also use high-temperature medium.
Wherein, high-temperature medium includes but not limited to：Hot water, conduction oil, steam, hot wind.
Using high-temperature medium as heat source, the cheap heat source such as the waste heat to burned waste gas device, solar energy can be facilitated
It utilizes, so as to improve the economic benefit of drying system.
Optionally, in the present embodiment, the first heating member 133 is electric heater, and the second heating member 138 is heat exchanger.
Specifically, electric heater can be heating wire, and heat exchanger can utilize hot water, conduction oil, steam, hot wind contour
Warm medium exchanges heat as heat source.
The prior art that the concrete structure and application method of heat exchanger are well known to those skilled in the art, it is no longer superfluous herein
It states.
Optionally, in the present embodiment, air supply duct 120, one end of air supply duct 120 and exhaust duct 110 are further included
Connection, air supply duct 120 are arranged on one end far from 110 internal gas of exhaust duct flow direction on exhaust duct 110, air supply duct
120 other end is connected with breeze fan 122, and breeze fan 122 is used to the gas in external environment being sent to air supply duct
In 120.
Air supply duct 120 can be that exhaust duct 110 provides fresh gas, so as to effectively reduce exhaust duct
The concentration of VOCs in 110 can improve the safety of whole system work.
Gas in external environment is sent in air supply duct 120 by breeze fan 122, then passes through air supply duct 120
It is flowed into exhaust duct 110, in the internal flow of exhaust duct 110, by the intake stack in each drying unit 130
Can be that each drying unit 130 absorbs when 131.
Optionally, in the present embodiment, third heating member 121 is provided on air supply duct 120, third heating member 121 is used
It is heated in for the gas in air supply duct 120.
Third heating member 121 can be that air supply duct 120 heats, and can be to enter exhaust duct 110 in air supply duct 120
In gas preheated.
Heating wire may be used in third heating member 121, can also use high-temperature medium.
Wherein, high-temperature medium includes but not limited to：Hot water, conduction oil, steam, hot wind.
Using high-temperature medium as heat source, the cheap heat source such as the waste heat to burned waste gas device, solar energy can be facilitated
It utilizes, so as to improve the economic benefit of drying system.
Optionally, in the present embodiment, one end far from exhaust duct 110 is connected with air-suction duct on air supply duct 120
123, there are multiple fresh wind ports 124, multiple fresh wind ports 124 are arranged at intervals on air-suction duct 123 on air-suction duct 123.
Air-suction duct 123 can will extend into different positions, so as to improve the flexibility of ambient atmos acquisition, and
Fresh wind port 124 is set as multiple, and multiple fresh wind ports 124 can be set respectively according to specific circumstances, specifically, multiple fresh wind ports
124 can be arranged on the place that gaseous contamination is more serious in external environment, so as to by gaseous contamination in external environment compared with
Gas for serious position is drawn into the inside of air supply duct 120 and then enters in exhaust duct 110, can reach cleaning
The effect of polluted gas in external environment.
Optionally, in the present embodiment, exhaust fan 114 and air-out blower fan 137 use frequency conversion fan；
First pressure sensor 112 is installed, first pressure sensor 112 is used to measure exhaust duct on exhaust duct 110
Air pressure in road 110；
Second pressure sensor 135 is installed, second pressure sensor 135 is used to measure drying box 134 on drying box 134
In air pressure；
First pressure sensor 112, second pressure sensor 135, exhaust fan 114 and air-out blower fan 137 are equal and control
Device processed electrical connection, controller are used for according to the signal of first pressure sensor 112 and second pressure sensor 135 row of control respectively
The frequency of wind wind turbine 114 and air-out blower fan 137.
The air pressure in first pressure sensor 112 and second pressure sensor 135 can be realized using controller
Information controls the frequency of exhaust fan 114 and air-out blower fan 137, can realize in each drying box 134 and keep micro-
Negative pressure state.
Wherein, micro-vacuum state is that opposite pressure pressure is between -100~0Pa.
Optionally, in the present embodiment, the frequency conversion of the model G-100A of Nuo Zhou companies production may be used in frequency conversion fan
Wind turbine, the prior art that this frequency conversion fan is well known to those skilled in the art, specific structure, interstructural connection are closed
System and using when power supply mode and application method be the prior art, details are not described herein.
Optionally, in the present embodiment, north may be used in first pressure sensor 112 and second pressure sensor 135
The pressure sensor of the model CYYZ11 of Jing Xingyi sensor technologies Co., Ltd production, this pressure sensor can measure
The pressure of gas or liquid, the electronic component being well known to those skilled in the art, the company between specific structure, structure
Connect mode and using when power supply mode, application method etc. be the prior art, details are not described herein.
Optionally, in the present embodiment, controller can be a kind of IC chip, the processing energy with signal
Power.Model LPC1114FDB48, LQFP48 encapsulation may be used in this controller.This controller is those skilled in the art
Power supply mode and user when the known prior art, specific structure, connection relation between structure and use
Method is the prior art, and details are not described herein.
Optionally, in the present embodiment, exhaust fan 114, air intake blower fan 132, air-out blower fan 137 and breeze fan
Power grid power supply may be used in 122 power supply or the mode of storage battery power supply is powered, and specific power supply mode is existing
There is technology, details are not described herein.
The operation principle of two fans hot air drying system 100 provided in this embodiment is at work, can to utilize
Gas in exhaust duct 110 is introduced into drying box 134 by intake stack 131, using wind pipe 136 by drying box 134
Internal gas is introduced into exhaust duct 110, using exhaust duct 110, can be discharged gas, so as to realize air inlet
The portion gas flowed into pipeline 131 is the gas discharged in wind pipe 136, so as to realize the recycling of exhaust gas, and
And since drying unit 130 is multiple interval settings, so as to realize the drying unit for being located at 110 downstream 113 of exhaust duct
The gas part flowed into intake stack 131 in 130 is wind pipe in the drying unit 130 of 110 upstream 111 of exhaust duct
The gas discharged in 136 so as to realize the recycling to exhaust gas, advantageously reduces the discharge of exhaust gas, improves in exhaust gas
The concentration of VOCs.And the air quantity between each drying unit 130 is separately adjustable, so as to different drying units 130 air quantity it
Between will not generate mutual interference, when partially dried unit 130 does not need to work, it is only necessary to be turned off.And
And in the drying box 134 of the most downstream 113 of exhaust duct 110 be the highest position of VOCs concentration in exhaust gas, so as to only need pair
The exhaust gas VOCs concentration discharged in the drying box 134 of the most downstream 113 of exhaust duct 110 is monitored, you can ensures entire system
The safety of system is conducive to improve the safety used；It also, can be by the gas in exhaust duct 110 using air intake blower fan 132
It is discharged in drying box 134 by intake stack 131, it can be by the gas in drying box 134 by going out using air-out blower fan 137
Wind pipeline 136 is discharged in exhaust duct 110, by controlling the frequency of air-out blower fan 137 is i.e. controllable to be arranged from drying box 134
The flow of the gas gone out so as to the frequency by controlling each air-out blower fan 137, can cause each drying box 134
The internal state for keeping tiny structure, can cause the gas inside drying box 134 not flowed out from gap, and extraneous ring
The inflow of the gas in external environment is reduced in the less inside by being flowed into drying box 134 in gap of gas in border, reduces
Invalid air draft.
Embodiment two
A kind of two fans air drying methods are present embodiments provided, this two fans air drying methods include following step
Suddenly：
The frequency of exhaust fan 114 is adjusted according to the value of feedback of first pressure sensor 112, makes to locate in exhaust duct 110
In micro-vacuum state；
The frequency of each air-out blower fan 137 is adjusted, is made in its corresponding drying box 134 in micro-vacuum state；
If the frequency of air-out blower fan 137 is adjusted to highest, the wind pressure of the inside of corresponding drying box 134 is negative still above micro-
Pressure condition, then by the way that the pressure in the frequency reduction exhaust duct 110 of exhaust fan 114 is turned up, until corresponding drying box 134
Inside be in micro-vacuum state or the frequency of exhaust fan 114 reaches highest limit value；
Wherein, micro-vacuum state is in for relative pressure between -100Pa~0Pa.
The operation principle of two fans air drying methods provided in this embodiment is when in use, to pass through the row of adjusting
The frequency of wind wind turbine 114 allows the gas reduced in external environment in micro-vacuum state in exhaust duct 110 to pass through not work
The drying unit 130 of work reduces invalid air draft to the amount of system internal leakage；Make its right by the frequency for adjusting air-out blower fan 137
In micro-vacuum state in the drying box 134 answered, the gas inside drying box 134 can be caused not flowed out from gap, and
And the less inside by being flowed into drying box 134 in gap of gas in external environment, reduce the gas in external environment
It flows into, reduces invalid air draft；It may determine that the pressure in exhaust duct 110 is lower according to wind turbine principle and characteristic combination schematic diagram
The flow of air intake blower fan 132 is smaller, the flow of air-out blower fan 137 is bigger, right if the frequency of air-out blower fan 137 is adjusted to highest
The wind pressure of the inside of drying box 134 answered then reduces row still above micro-vacuum state by the way that the frequency of exhaust fan 114 is turned up
Pressure in wind pipeline 110 makes the inside of corresponding drying box 134 level off to as micro-vacuum state.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of two fans hot air drying system, which is characterized in that including：
Exhaust duct；
Drying unit, the drying unit are set as multiple, the side that multiple drying units extend along the exhaust duct
To interval setting；
The drying unit includes intake stack, wind pipe and drying box；
One end of the intake stack is connected with the drying box, and the other end of the intake stack and the exhaust duct connect
It is logical, air intake blower fan is connected on the intake stack, the air intake blower fan is used to the gas in the exhaust duct being discharged to
In the drying box；
One end of the wind pipe is connected with the drying box, and the other end of the wind pipe and the exhaust duct connect
It is logical, air-out blower fan is connected on the wind pipe, the air-out blower fan is used to the gas in the drying box being discharged to institute
It states in exhaust duct.
2. two fans hot air drying system according to claim 1, which is characterized in that one end connection of the exhaust duct
There is exhaust fan, the exhaust fan is used to discharge the gas in the exhaust duct.
3. two fans hot air drying system according to claim 2, which is characterized in that is provided on the intake stack
One heating member, first heating member are used for as the gas heating in the intake stack.
4. two fans hot air drying system according to claim 3, which is characterized in that is provided on the wind pipe
Two heating members, second heating member are used for as the gas heating in the wind pipe.
5. two fans hot air drying system according to claim 2, which is characterized in that air supply duct is further included, it is described to send
One end of wind pipeline is connected with the exhaust duct, and the air supply duct is arranged on the exhaust duct far from the exhaust duct
One end of road internal gas flow direction, the other end of the air supply duct are connected with breeze fan, and the breeze fan is used for will be outer
Gas in boundary's environment is sent in the air supply duct.
6. two fans hot air drying system according to claim 4, which is characterized in that first heating member is electrical heating
Device, second heating member are heat exchanger.
7. two fans hot air drying system according to claim 5, which is characterized in that is provided on the air supply duct
Three heating members, the third heating member are used for as the gas heating in the air supply duct.
8. two fans hot air drying system according to claim 5, which is characterized in that far from described on the air supply duct
One end of exhaust duct is connected with air-suction duct, has multiple fresh wind ports on the air-suction duct, multiple fresh wind ports are in the suction
It is arranged at intervals on wind pipeline.
9. two fans hot air drying system according to claim 6, which is characterized in that the exhaust fan and the outlet air
Wind turbine uses frequency conversion fan；
First pressure sensor is installed, the first pressure sensor is used to measure the exhaust duct on the exhaust duct
In air pressure；
Second pressure sensor is installed, the second pressure sensor is used to measure in the drying box on the drying box
Air pressure；
The first pressure sensor, the second pressure sensor, the exhaust fan and the air-out blower fan are equal and control
Device is electrically connected, and the controller is used to be controlled respectively according to the signal of the first pressure sensor and the second pressure sensor
Make the frequency of the exhaust fan and the air-out blower fan.
10. a kind of two fans air drying methods, which is characterized in that include the following steps：
Exhaust fan frequency is adjusted according to the value of feedback of first pressure sensor, is made in exhaust duct in micro-vacuum state；
The frequency of each air-out blower fan is adjusted, is made in its corresponding drying box in micro-vacuum state；
If the frequency of the air-out blower fan is adjusted to highest, the wind pressure of the inside of corresponding drying box is still above tiny structure shape
Exhaust fan frequency is then turned up to reduce pressure in exhaust duct in state, until the inside of corresponding drying box is in tiny structure shape
State or exhaust fan frequency reach highest limit value；
Wherein, micro-vacuum state is in for relative pressure between -100Pa~0Pa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025354.XA CN108240765A (en) | 2018-01-09 | 2018-01-09 | Two fans hot air drying system and two fans air drying methods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025354.XA CN108240765A (en) | 2018-01-09 | 2018-01-09 | Two fans hot air drying system and two fans air drying methods |
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| CN108240765A true CN108240765A (en) | 2018-07-03 |
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| CN201810025354.XA Pending CN108240765A (en) | 2018-01-09 | 2018-01-09 | Two fans hot air drying system and two fans air drying methods |
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| CN109028881A (en) * | 2018-07-24 | 2018-12-18 | 楚天科技股份有限公司 | A kind of dryer and its Differential pressure control method |
| CN109307423A (en) * | 2018-10-24 | 2019-02-05 | 广东环葆嘉节能科技有限公司 | A kind of hot air drying system and its control method |
| CN111380206A (en) * | 2018-12-28 | 2020-07-07 | 广东环葆嘉节能科技有限公司 | Temperature-adjustable warm air fan, hot air supply system and method |
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| CN105972979A (en) * | 2016-06-07 | 2016-09-28 | 广东环葆嘉节能科技有限公司 | Exhaust hot air drying system |
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