CN2609320Y - Hot air roaster for printed circuit board - Google Patents
Hot air roaster for printed circuit board Download PDFInfo
- Publication number
- CN2609320Y CN2609320Y CN 03240552 CN03240552U CN2609320Y CN 2609320 Y CN2609320 Y CN 2609320Y CN 03240552 CN03240552 CN 03240552 CN 03240552 U CN03240552 U CN 03240552U CN 2609320 Y CN2609320 Y CN 2609320Y
- Authority
- CN
- China
- Prior art keywords
- circuit board
- printed circuit
- hot
- heater
- blast
- 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.)
- Expired - Fee Related
Links
- 239000002904 solvent Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims description 33
- 239000002699 waste material Substances 0.000 claims description 16
- 241000505673 Scintilla Species 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 238000001035 drying Methods 0.000 abstract description 7
- 239000003570 air Substances 0.000 description 34
- 239000007789 gas Substances 0.000 description 15
- 239000013557 residual solvent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- KNVAYBMMCPLDOZ-UHFFFAOYSA-N propan-2-yl 12-hydroxyoctadecanoate Chemical compound CCCCCCC(O)CCCCCCCCCCC(=O)OC(C)C KNVAYBMMCPLDOZ-UHFFFAOYSA-N 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to a hot-air roaster for printed circuit board. The air inlet pipe of the oven is arranged inside the exhaust pipe; and the inlet of the air inlet pipe extends upward closing to the heater and the fan at the suction opening; therefore, the fan induces the fresh air from the outside to be delivered into the oven through the air inlet pipe; and the fan heats up the air, and the hot air is conveyed to the baking cavity of the oven with the help of the fan to dry up the printed circuit board which has been soaked with solvent; the hot exhaust with solvent molecule is then discharged with the help of the guide of the external subpressure end of the suction pipe; when the hot exhaust goes through the suction pipe, the exhaust can preheat the fresh air; therefore, the utility model is saving energy, and can improve the volatilization efficiency and the drying effect of the solvent in the printed circuit board.
Description
Technical field
The utility model relates to a kind of hot-blast oven of use in printed circuit board, transforms at the inlet and outlet pipeline in this baking box, to promote the volatilization efficient of residual solvent in bake process on the printed circuit board (PCB).
Background technology
Printed circuit board (PCB) (PCB), be that required circuit layout is printed on the multilayer plate body, again multi-layer sheet is compounded to form the circuit plate body, the printing ink (or being called the green lacquer of insulation) that the plate face coating last layer of this plate body must be contained solvent then, and place special oven to dry, make the solvent evaporates in the plate body ink lay, to receive the effect of drying.
The above-mentioned baking box equipment that is used for drying printing ink on the printed circuit board (PCB) specially as shown in Figure 1, make a box thermal insulation furnace body 1 form, in establish one the baking storehouse 1C, can for put wait that the printed circuit board (PCB) 2 that dries by the fire is gone in, plan in addition in the body of heater 1 and be formed with inlet air plenum 1A and hot room 1B, establishing tool blast pipe 11 in this inlet air plenum 1A communicates with the external world, and establishing tool exhaust duct 12 in this hot room 1B communicates with the air draft pipeline in the external world, in the hot room 1B and dispose a heater 15, and establish between inlet air plenum 1A and hot room 1B and have fan 13, can accept a motor 14 drives, can extraneous fresh air be introduced in the inlet air plenum 1A by blast pipe 11 places, and force the fresh air of introducing is delivered in the hot room 1B, accept heating of heater 15 and form hot blast, hot blast can be passed in the baking storehouse 1C of body of heater 1, to promote the rapid volatilization of residual solvent on the printed circuit board (PCB) 2.The hot baking box equipment of this printed circuit board (PCB) special use is in the streets being used by wide model.Yet, find that in use this body of heater 1 interior exhausting by fan 13 operates, will make to form negative pressure exhausting state in the inlet air plenum 1A, and make formation malleation propelling movement hot blast state in the hot room 1B, only but have following disappearance:
1. the air outlet 16 of this baking storehouse 1C is to be connected with inlet air plenum 1A and blast pipe 11, but be the negative pressure end based on this inlet air plenum 1A and blast pipe 11, outside air in blast pipe 11 loading inlet air plenum 1A, the waste hot gas that will be entrained with the solvent scintilla with the air outlet 16 of negative pressure guiding baking storehouse 1C is done to mix in the lump in inlet plenum 1A, though in the tool and the effect of solvent scintilla concentration in the waste hot gas, but old solvent scintilla content is not effluxed removal in inlet plenum 1A, force waste gas body after the neutralization to remain to be pumped to and form the malleation hot blast in the hot room 1B by fan 13, and secondary is supplied in the baking storehouse 1C as the usefulness of drying printed circuit board (PCB) again, only there is local waste gas to know from experience in the bake process of hot air circulation in stove and discharges, but caused the low excessively puzzlement of heat baking volatilization efficient of solvent on the printed circuit board (PCB) 2 in the baking storehouse 1C by the exhaust duct 12 of hot room 1B.
2. because of having toasted the waste hot gas that is entrained with solvent scintilla content behind the printed circuit board (PCB) 2 in the above-mentioned baking box, be to be recovered to again in the baking storehouse 1C, therefore, solvent scintilla in the waste hot gas just can constantly be hoarded between the 1C internal face of baking storehouse, the heat of solvent baking volatilization efficient is not cited on causing printed circuit board (PCB) 2, and causing the interior oil dripping phenomenon of baking storehouse 1C easily, influence is built in the baking properties of the printed circuit board (PCB) in the baking storehouse 1C.
3. the mode of above-mentioned recovery waste hot gas not only can't be saved baking box and be contained the required running electric energy of heater, need not expend long stoving time because of heat baking volatilization efficient is clear on the contrary, to such an extent as to cause serious power consumption phenomenon.
Summary of the invention
The purpose of this utility model provides a kind of hot-blast oven of use in printed circuit board, transforms at the inlet and outlet pipeline in this baking box, to promote the volatilization efficient of residual solvent on the flash baking printed circuit board (PCB).
The hot-blast oven of use in printed circuit board of the present utility model comprises being formed with heating chamber and wind assembling set in the box insulation watch box, disposes a wind chamber between this heating chamber and the wind assembling set in addition, is equiped with a fan that is subjected to motor driven in this wind chamber; Being provided with one in this body of heater can be for the baking storehouse of putting printed circuit board (PCB), and is connected with above-mentioned wind assembling set and heating chamber respectively; It is characterized by: a distolateral tool exhaust duct of establishing of this body of heater, exhaust duct one end are connected to extraneous negative pressure end, and the exhaust duct other end is communicated to the exhaust door nearside in the baking storehouse in the contiguous heating chamber in the body of heater; Establish tool one heater in this heating chamber, the suction opeing nearside of contiguous wind chamber; Establish tool one blast pipe in this exhaust duct, an end suction inlet stretches out that exhaust duct is outer to communicate with atmosphere, and the other end enters the mouth to wear and visits to body of heater and extend upwardly to suction opeing position near heater and fan.The utlity model has following characteristics:
1. utilize the interior fresh air (air inlet) of waste hot gas (exhaust) preheating blast pipe in the exhaust duct, have the effect that reduces heater power consumption.
2. waste hot gas is directly discharged from exhaust duct negative pressure end, and import the fresh air of preheating from the blast pipe place, can make the fresh hot air of formation higher degree in the baking storehouse of baking box, avoid the used heat device again by two these recovery.
3. the fresh hot air of mat supply higher degree in the time of can toasting printed circuit board (PCB) in the baking storehouse of baking box, is carried the solvent scintilla discharge of high level secretly, makes residual solvent volatilization and dry fast on the printed circuit board (PCB), and can stop to dry by the fire generation oil dripping phenomenon in the storehouse.
The utility model is elaborated with instantiation below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the cut-away view of the conventional oven of printed circuit board (PCB);
Fig. 2 is the cut-away view of printed circuit board (PCB) special oven of the present utility model;
Fig. 3 is the operating state cut-away view of Fig. 2 of the present utility model.
Embodiment
Fig. 2 shows the structure that the utility model provides a kind of hot-blast oven of use in printed circuit board, includes:
Establish a baking storehouse 7 in the one box thermal insulation furnace body 3, for putting in printed circuit board (PCB) to be dried by the fire 2 goes into, in the body of heater 3 in addition planning be formed with heating chamber 31 and wind assembling set 32, and dispose a wind chamber 33 between heating chamber 31 and the wind assembling set 32 in addition.
This wind chamber 33 has a suction opeing 36 and another air outlet 37, this suction opeing 36 is connected with heating chamber 31, this air outlet 37 is connected with wind assembling set 32, and be equiped with a whirling motion fan 34 in the wind chamber 33, this whirling motion fan 34 is accepted a motor 35 and is driven, simultaneously in heating chamber 31, establish a heater 6, be adjacent to suction opeing 36 nearsides of wind chamber 33.
One exhaust duct 4 is installed in the distolateral of body of heater 3, and an end of exhaust duct 4 is connected with the air draft pipeline 40 of extraneous tool negative pressure, and makes exhaust duct 4 other ends be communicated to exhaust door 72 nearsides in the baking storehouse 7 in the contiguous heating chambers 31 in the body of heater 3.
One blast pipe 5, carry and be located in the said exhaust pipe 4, an end suction inlet 51 of blast pipe 5 is stretched out outside the exhaust duct 4, and communicate with ambient atmosphere, blast pipe 5 other ends inlet 52 is worn visited to body of heater 3, and extend upwardly near suction opeing 36 positions of heater 6 with fan 34.
In addition, this baking storehouse 7 can be for inserting or take out the printed circuit board (PCB) 2 except being provided with a door, and other has a shutter 71 and another exhaust door 72, and this shutter 71 is connected with wind assembling set 32, and this exhaust door 72 is connected with above-mentioned heating chamber 31.
Configuration by above-mentioned body of heater 3 inner chamber barrel roads, when the user activates motor 35 and drive fan 34 rotations, the relation that can be connected with heating chamber 31 and blast pipe 5 via suction opeing 36, and the swabbing action power that mat fan 34 produces, make heating chamber 31 form low-pressure state, the virgin gas that is beneficial to the external world sucks in the heating chamber 31 from blast pipe 5, and see through the effect of heating of heat air, make the fresh air of inspiration be heated to form hot blast, suck in the wind chamber 33 from suction opeing 36 again, and delivered to air outlet 37 and enforceable entering in the wind assembling set 32 by fan 34 is logical, because of this wind assembling set 32 does not have and the extraneous outlet that communicates, so after lasting being supplied to of hot blast enters wind assembling set 32, just in wind assembling set 32, form the hot blast collection and press phenomenon, make the hot blast in the wind assembling set 32 have malleation, and then from shutter 71 enter the baking storehouse 7 in, mat hot air circulation and wind-warm syndrome thereof, to place the solvent on the printed circuit board (PCB) 2 to be dried by the fire in the baking storehouse 7 to evaporate gradually, and this waste hot gas that contains aqueous solvent molecule and black dirt is entered in the heating chamber 31 from exhaust door 72, and because of in the heating chamber 31 for presenting low-pressure state, has negative pressure again in the exhaust duct 4 of adjacent row air door 72 simultaneously, therefore the waste hot gas that is disposed in the heating chamber 31 by exhaust door 72 is to be attracted by the negative pressure in the exhaust duct 4 automatically, and be disposed to from exhaust duct 4 in the air draft pipeline 40 of extraneous negative pressure end, make waste hot gas be unlikely to be trapped in the heating chamber 31, and newly advance air in the blast pipe in the indirect preheating exhaust duct 45, can receive the effect of saving heater 6 power consumption, and promote the volatilization efficient of residual solvent on the printed circuit board (PCB) 2.
In addition, inlet 52 positions because of the blast pipe 5 in the above-mentioned heating chamber 31, suction opeing 36 positions of heater 6 and wind chamber 33 have been adjacent to, therefore by the extraneous fresh air in the blast pipe 5 introduction heating chambers 31, only be subjected to the swabbing action of wind chamber 33 internal fans 34, so be unlikely to negative pressure sucking-off with exhaust duct 4; Simultaneously, because of exhaust duct 5 entrance points in the heating chamber 31 are that to be adjacent to the exhaust door 72 in baking storehouse 7 distolateral, therefore enter waste hot gas in the heating chamber 31 from drying by the fire storehouse exhaust door 72, only be subjected to the start of negative pressure in the exhaust duct 4 and be sucked out, be unlikely to be aspirated by fan 34, so can make fresh cool ambient air quilt continue to suck heating in the stove, and the hot air circulation operation of discharge waste hot gas is able to more smooth and easy.
When the above-mentioned operation that feeds fresh air and discharge waste hot gas in body of heater 2 is enough to when smooth and easy, except that can promoting the volatilization efficient of drying by the fire residual solvent on the 7 interior printed circuit board (PCB)s 2 of storehouse, also can be in the while pre-heating intaking of discharging waste hot gas, dry by the fire the activity duration that adds hot blast rate to reduce heat, so the effect of saving heater 6 power consumption is arranged, also can impel simultaneously this solvent scintilla that is heated volatilization to be unlikely to be trapped in the baking storehouse 7, avoid drying by the fire between 7 inwalls of storehouse and the solvent scintilla to take place be condensed into the embarrassed of oil dripping and resemble, in baking storehouse 7, accept the quality of air cooking in order to promoting printed circuit board (PCB) 2.
To sum up institute is old, the hot-blast oven of printed circuit board (PCB) special use provided by the utility model, except that body of heater internal structure novelty, also really tool can promote volatilization efficient in bake process of solvent on the printed circuit board (PCB), shortens stoving time, prevents oil dripping, avoid benefit such as power consumption.
Claims (7)
1. the hot-blast oven of a use in printed circuit board comprises and will be formed with heating chamber and wind assembling set in the box thermal insulation furnace body, disposes a wind chamber between this heating chamber and the wind assembling set in addition, is equiped with a fan that is subjected to motor driven in this wind chamber; Being provided with one in this body of heater can be for the baking storehouse of putting printed circuit board (PCB), and is connected with above-mentioned wind assembling set and heating chamber respectively;
It is characterized by:
The one distolateral tool exhaust duct of establishing of this body of heater, exhaust duct one end are connected to extraneous negative pressure end, and the exhaust duct other end is communicated to the exhaust door nearside in the baking storehouse in the contiguous heating chamber in the body of heater;
Establish tool one heater in this heating chamber, the suction opeing nearside of contiguous wind chamber;
Establish tool one blast pipe in this exhaust duct, an end suction inlet stretches out that exhaust duct is outer to communicate with atmosphere, and the other end enters the mouth to wear and visits to body of heater and extend upwardly to suction opeing position near heater and fan.
2. the hot-blast oven of use in printed circuit board according to claim 1, wherein this exhaust duct is connected with the air draft pipeline of extraneous tool negative pressure.
3. the hot-blast oven of use in printed circuit board according to claim 1, wherein this blast pipe enters in the heating chamber from extraneous suction fresh air by fan.
4. as the hot-blast oven of use in printed circuit board as described in the claim 3, wherein this fan pushes to the hot blast through heater heats in the heating chamber in the wind assembling set.
5. as the hot-blast oven of use in printed circuit board as described in the claim 4, wherein the hot blast in this wind assembling set is delivered in the baking storehouse by fan.
6. as the hot-blast oven of use in printed circuit board as described in the claim 5, wherein the hot blast in this baking storehouse is carried the solvent scintilla on the printed circuit board (PCB) secretly, forms waste hot gas and effluxes.
7. as the hot-blast oven of use in printed circuit board as described in the claim 6, wherein the exhaust duct of this waste hot gas by the tool negative pressure effluxes and leaves body of heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03240552 CN2609320Y (en) | 2003-03-13 | 2003-03-13 | Hot air roaster for printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03240552 CN2609320Y (en) | 2003-03-13 | 2003-03-13 | Hot air roaster for printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2609320Y true CN2609320Y (en) | 2004-03-31 |
Family
ID=34168122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03240552 Expired - Fee Related CN2609320Y (en) | 2003-03-13 | 2003-03-13 | Hot air roaster for printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2609320Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425922A (en) * | 2011-11-22 | 2012-04-25 | 洛阳伟信电子科技有限公司 | Drying device of electroplated board with high cleanliness |
| CN103123213A (en) * | 2012-12-12 | 2013-05-29 | 常州市立威刀具有限公司 | Circuit board drying device |
| CN103547076A (en) * | 2013-10-16 | 2014-01-29 | 镇江华印电路板有限公司 | Circuit board oven with heat recovery device |
| CN107490256A (en) * | 2017-09-22 | 2017-12-19 | 河南农业大学 | Suction type electric heating drier |
| CN109413874A (en) * | 2018-09-06 | 2019-03-01 | 芜湖职业技术学院 | A kind of printed circuit board automatic drier |
-
2003
- 2003-03-13 CN CN 03240552 patent/CN2609320Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425922A (en) * | 2011-11-22 | 2012-04-25 | 洛阳伟信电子科技有限公司 | Drying device of electroplated board with high cleanliness |
| CN102425922B (en) * | 2011-11-22 | 2015-04-08 | 洛阳伟信电子科技有限公司 | Drying device of electroplated board with high cleanliness |
| CN103123213A (en) * | 2012-12-12 | 2013-05-29 | 常州市立威刀具有限公司 | Circuit board drying device |
| CN103547076A (en) * | 2013-10-16 | 2014-01-29 | 镇江华印电路板有限公司 | Circuit board oven with heat recovery device |
| CN107490256A (en) * | 2017-09-22 | 2017-12-19 | 河南农业大学 | Suction type electric heating drier |
| CN107490256B (en) * | 2017-09-22 | 2023-03-31 | 河南农业大学 | Negative pressure type electric heating drier |
| CN109413874A (en) * | 2018-09-06 | 2019-03-01 | 芜湖职业技术学院 | A kind of printed circuit board automatic drier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: KEQIAO INDUSTRIAL STOCK CO., LTD. Free format text: FORMER OWNER: ZHANG MINGDE Effective date: 20061201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061201 Address after: Taiwan province of China Patentee after: Asia Neo Tech Industry Co., Ltd. Address before: Taiwan province of China Patentee before: Zhang Mingde |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040331 Termination date: 20110313 |