CN104923878A - Nitrogen protection device - Google Patents
Nitrogen protection device Download PDFInfo
- Publication number
- CN104923878A CN104923878A CN201510302160.6A CN201510302160A CN104923878A CN 104923878 A CN104923878 A CN 104923878A CN 201510302160 A CN201510302160 A CN 201510302160A CN 104923878 A CN104923878 A CN 104923878A
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- heating tube
- air inlet
- protection device
- conduit
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/08—Soldering by means of dipping in molten solder
- B23K1/085—Wave soldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/42—Printed circuits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Heating (AREA)
Abstract
The invention discloses a nitrogen protection device. The nitrogen protection device comprises an electric control device, a nitrogen guide pipe, an electric heating device, a tin furnace and a nitrogen circulating cover. The electric heating device comprises a heating pipe for heating nitrogen, and an air inlet of the heating pipe is connected with an external nitrogen pipeline; an air outlet of the heating pipe is connected with an air inlet of the nitrogen guide pipe, and an air outlet of the nitrogen guide pipe is connected with an air inlet of the nitrogen circulating cover; and the nitrogen circulating cover is connected to an opening of the tin furnace in a covering manner. The nitrogen guide pipe is located on the outer side of the tin furnace, and the electric heating device is controlled by the electric control device; the air outlet of the nitrogen guide pipe is inserted into the air inlet of the nitrogen circulating cover in a matched manner and is connected with the air inlet in a clamped manner; the outer wall of the nitrogen guide pipe is sleeved with a high-temperature-resisting sealing ring, and the high-temperature-resisting sealing ring is in tight contact with the wall of the air inlet.
Description
Technical field
The present invention relates to the nitrogen protection field of selective wave-soldering, be specifically related to a kind of nitrogen protection device.
Background technology
Nitrogen, chemical formula is N2, is a kind of gas of colorless and odorless under usual condition, and usually nontoxic, and general nitrogen is less than atmospheric density.Nitrogen accounts for the 78.12%(volume fraction of air total amount), be the Main Ingredients and Appearance of air.At normal atmospheric pressure, when being cooled to-195.8 DEG C, becoming and do not have coloured liquid, when being cooled to-209.8 DEG C, liquid nitrogen becomes the solid of snow shape.The chemical property torpescence of nitrogen, is difficult under normal temperature react with other materials, but under high temperature, high energy conditions can with Cucumber generation chemical change, be used for producing the novel substance useful to the mankind.
In the process preparing nitrogen, existing selective wave-soldering nitrogen protection device, not from heating design and temperature-controlling component, accurately can not control the temperature of nitrogen, to the bad adaptability of different pcb board welding procedure.Existing selective wave-soldering nitrogen protection technology, normally that nitrogen conduit is external or through tin furnace internal-lining, by the heating temperatures nitrogen of tin stove solder; And the nitrogen pipeline being placed in tin furnace internal-lining portion dependence Xi Wenre transmission is very easily corroded, directly affect device security and reliability.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of nitrogen protection device, improve Wave soldering apparatus to the adaptive nitrogen protection device of different pcb board welding procedure.
A kind of nitrogen protection device, comprises electric control gear, nitrogen conduit, electric heater unit, tin stove and nitrogen circulation outer cover; Described electric heater unit comprises the heating tube for heating nitrogen, the air inlet of this heating tube connects outside nitrogen pipeline, the gas outlet of heating tube connects the air inlet of described nitrogen conduit, the gas outlet of nitrogen conduit connects the air admission hole of described nitrogen circulation outer cover, and nitrogen circulation outside housing cover is connected on the fire door of described tin stove; Described nitrogen conduit is positioned at the outside of described tin stove; Described electric heater unit is controlled by described electric control gear; The air admission hole of the described nitrogen circulation outer cover of insertion of described nitrogen conduit gas outlet end adaptation is also connected with this air admission hole buckle; The outer wall of described nitrogen conduit is socketed a high-temperature resistant seal ring, the hole wall close contact of this high-temperature resistant seal ring and described air admission hole.
Preferably, described electric heater unit also comprises electrical bar, this electrical bar comprises the barred body for generating heat and the support portion for fixing this barred body, one end of barred body is fixed on support portion, the other end of barred body all inserts in described heating tube and with the tube wall of heating tube gap, and support portion is connected with heating tube is airtight; Heating tube sidewall near side, support portion is provided with the air inlet that opening forms described heating tube, and this air inlet connects an air inlet pipe, the outside nitrogen pipeline described in this air inlet pipe connects.
Preferably, install a temperature sensor in described nitrogen conduit, this temperature sensor is electrically connected with described electric control gear.
Preferably, described support portion is connected with described heating tube screw thread is airtight.
Preferably, described nitrogen conduit gas outlet and the air admission hole of described nitrogen circulation outer cover are dismountable is airtightly connected.
Preferably, described electric heater unit is fixedly mounted on face, described tin furnace side, the fire door of described tin stove is horizontally outward provided with outstanding thin plate in side, and this thin plate is provided with through hole, the air admission hole inserting described nitrogen circulation outer cover through this hole of the gas outlet end adaptation of described nitrogen conduit.
Preferably, be provided with baffle plate outside described electric heater unit, baffle plate and described thin plate surround a protective cover.
Technical scheme of the present invention has following beneficial effect:
Nitrogen conduit is arranged on the outside of tin stove, avoids nitrogen conduit and be corroded, improve reliability and the security of nitrogen conduit; Electric heater unit independently to nitrogen heating, and is subject to the control of electric control gear, accurately can control the power output of electric heater unit, obtain required nitrogen temperature, improves Wave soldering apparatus to the adaptability of different pcb board welding procedure.
Accompanying drawing explanation
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 1 is the structural representation of an embodiment of nitrogen protection device of the present invention;
Fig. 2 is the structural representation of the another embodiment of nitrogen protection device of the present invention.
In figure: 10, tin stove; 11, thin plate; 20, nitrogen circulation outer cover; 31, air inlet pipe; 32, support portion; 33, heating tube; 34, connector; 35, temperature sensor; 36, high-temperature seal ring; 40, nitrogen conduit; 50, baffle plate.
Detailed description of the invention
In order to have a clear understanding of technical scheme of the present invention, its detailed structure will be proposed in the following description.Obviously, the concrete execution of the embodiment of the present invention also not enough specific details being limited to those skilled in the art and haveing the knack of.The preferred embodiments of the present invention are described in detail as follows, and except these embodiments described in detail, can also have other embodiments.
Refer to Fig. 1, a kind of nitrogen protection device of present embodiment, comprise electric control gear (not marking in figure), nitrogen conduit 40, electric heater unit, tin stove 10 and nitrogen circulation outer cover 20; Described electric heater unit comprises the heating tube 33 for heated nitrogen, the air inlet of this heating tube 33 connects outside nitrogen pipeline, the gas outlet of heating tube 33 connects the air inlet of described nitrogen conduit 40, the gas outlet of nitrogen conduit 40 connects the air admission hole of described nitrogen circulation outer cover 20, and nitrogen circulation outer cover 20 lid is connected on the fire door of described tin stove 10; Described nitrogen conduit 40 is positioned at the outside of described tin stove 10; Described electric heater unit is controlled by described electric control gear.Easy to connect in order between each parts, generally can use the connector 34 of pipeline, convenient turning connects.
The course of work of the present invention is: outside nitrogen enters electric heater unit heating, and the nitrogen after heating enters nitrogen circulation outer cover 20 by nitrogen conduit 40, and wherein, electric cabinet controls the power of electric heater unit, controls the temperature etc. to nitrogen heating.
Nitrogen protection device of the present invention, is arranged on the outside of tin stove 10 by nitrogen conduit 40, avoid nitrogen conduit 40 and be corroded, and improves reliability and the security of nitrogen conduit 40; Electric heater unit independently to nitrogen heating, and is subject to the control of electric control gear, accurately can control the power output of electric heater unit, obtain required nitrogen temperature, improves Wave soldering apparatus to the adaptability of different pcb board welding procedure.
In the present embodiment, described electric heater unit also comprises electrical bar (not marking in figure); Described electrical bar comprises the barred body (not marking in figure) for generating heat and the support portion 32 for fixing this barred body, one end of barred body is fixed on support portion 32, the other end of barred body all to insert in described heating tube 33 and has gap with the tube wall of heating tube 33, and support portion 32 is connected with heating tube 33 is airtight; Heating tube 33 sidewall near side, support portion 32 is provided with the air inlet that opening forms described heating tube 33, and this air inlet connects an air inlet pipe 31, and this air inlet pipe 31 connects described outside nitrogen pipeline.Barred body to insert in heating tube 33 and has gap with the tube wall of heating tube 33, gap is had to be circulation in order to nitrogen, and the nitrogen entering into heating tube 33 can be made to contact fully with the barred body of electrical bar fully in barred body insertion heating tube 33, improve the efficiency of heating, and opening is located on the heating tube sidewall of side, support portion 32, contact path and the time of contact of nitrogen and barred body can be increased, improve the efficiency of heating, in order to better improve time of contact and contact path, can also be after nitrogen enters heating tube 33, to spin in heating tube motion, its concrete embodiment can be provided with spiral fin on barred body or on heating tube inwall, the support portion 32 of electric hot plate is to keep its air-tightness with described heating tube 33 airtight connection, prevents gas leakage.Further, described support portion 32 is connected with described heating tube 33 screw thread is airtight, dismounting both convenient and installation, convenient for maintaining.In another embodiment, electric heater unit can make the outer cover connecting resistance silk at heating tube 33, heats.
In the present embodiment, in described nitrogen conduit 40, a temperature sensor 35 is installed, this temperature sensor 35 is electrically connected with described electric control gear, the temperature in nitrogen conduit 40 can be known so at any time, and control electric heater unit heated nitrogen to the temperature of specifying by electric control gear, then temperature sensor sends a signal to electric control gear, and electric cabinet controls the power that electric heater unit keeps exporting, and intelligence is convenient.
In the present embodiment, described nitrogen conduit 40 gas outlet is connected with the air admission hole of described nitrogen circulation outer cover 20 is dismountable, dismountable connected mode has a lot, wherein, the air admission hole of the insertion nitrogen circulation outer cover of the gas outlet end adaptation of described nitrogen conduit 40 is also connected with this air admission hole buckle, buckle dismounting easy to connect, it can certainly be the releasable connection of other modes, such as be spirally connected between the two, both dismountable connections, when there is solder blocking nitrogen circulation outer cover 20 steam vent, can nitrogen circulation outer cover 20 safeguarding under fast dismantling, and without the need to tearing the parts such as nitrogen heater open, facilitate the maintenance of nitrogen protection device.
In the present embodiment, the outer wall of described nitrogen conduit 40 is socketed a high-temperature resistant seal ring 36, this high-temperature resistant seal ring 36 and the hole wall close contact of described air admission hole, further can improve the air-tightness of both junctions.
In the present embodiment, described electric heater unit is fixedly mounted on described tin stove 10 side, the fire door of described tin stove 10 is horizontally outward provided with outstanding thin plate 11 in side, this thin plate 11 is provided with through hole, described nitrogen conduit 40 gas outlet end adaptation insert the air admission hole of described nitrogen circulation outer cover through this through hole, can prevent staff from winding by hand being contacted with nitrogen conduit 40 with electric heater unit to the side of tin stove because of carelessness and scalding like this.
In another embodiment, as shown in Figure 2, be provided with baffle plate 50 outside described electric heater unit, baffle plate and described thin plate surround a protective cover, can prevent operating personnel from scalding further like this.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field still can modify to the specific embodiment of the present invention or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims awaited the reply.
Claims (7)
1. a nitrogen protection device, is characterized in that, comprises electric control gear, nitrogen conduit, electric heater unit, tin stove and nitrogen circulation outer cover; Described electric heater unit comprises the heating tube for heating nitrogen, the air inlet of this heating tube connects outside nitrogen pipeline, the gas outlet of heating tube connects the air inlet of described nitrogen conduit, the gas outlet of nitrogen conduit connects the air admission hole of described nitrogen circulation outer cover, and nitrogen circulation outside housing cover is connected on the fire door of described tin stove; Described nitrogen conduit is positioned at the outside of described tin stove; Described electric heater unit is controlled by described electric control gear; The air admission hole of the described nitrogen circulation outer cover of insertion of described nitrogen conduit gas outlet end adaptation is also connected with this air admission hole buckle; The outer wall of described nitrogen conduit is socketed a high-temperature resistant seal ring, the hole wall close contact of this high-temperature resistant seal ring and described air admission hole.
2. nitrogen protection device according to claim 1, it is characterized in that, described electric heater unit also comprises electrical bar, this electrical bar comprises the barred body for generating heat and the support portion for fixing this barred body, one end of barred body is fixed on support portion, the other end of barred body all inserts in described heating tube and with the tube wall of heating tube gap, and support portion is connected with heating tube is airtight; Heating tube sidewall near side, support portion is provided with the air inlet that opening forms described heating tube, and this air inlet connects an air inlet pipe, the outside nitrogen pipeline described in this air inlet pipe connects.
3. nitrogen protection device according to claim 2, is characterized in that, install a temperature sensor in described nitrogen conduit, this temperature sensor is electrically connected with described electric control gear.
4. nitrogen protection device according to claim 2, is characterized in that, described support portion is connected with described heating tube screw thread is airtight.
5. nitrogen protection device according to claim 2, is characterized in that, described nitrogen conduit gas outlet and the air admission hole of described nitrogen circulation outer cover are dismountable to be airtightly connected.
6. nitrogen protection device according to claim 1; it is characterized in that; described electric heater unit is fixedly mounted on face, described tin furnace side; the fire door of described tin stove is horizontally outward provided with outstanding thin plate in side; this thin plate is provided with through hole, the air admission hole inserting described nitrogen circulation outer cover through this hole of the gas outlet end adaptation of described nitrogen conduit.
7. nitrogen protection device according to claim 6, is characterized in that, is provided with baffle plate outside described electric heater unit, and baffle plate and described thin plate surround a protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510302160.6A CN104923878A (en) | 2015-06-05 | 2015-06-05 | Nitrogen protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510302160.6A CN104923878A (en) | 2015-06-05 | 2015-06-05 | Nitrogen protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104923878A true CN104923878A (en) | 2015-09-23 |
Family
ID=54111476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510302160.6A Pending CN104923878A (en) | 2015-06-05 | 2015-06-05 | Nitrogen protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104923878A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387511A (en) * | 2015-10-28 | 2016-03-09 | 桂林新艺制冷设备有限责任公司 | Warmer long in service life |
| CN106392248A (en) * | 2016-11-04 | 2017-02-15 | 天津航空机电有限公司 | Welding protection tool for vacuum atmosphere furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201146634Y (en) * | 2008-01-25 | 2008-11-05 | 赵永先 | Minitype desk type receding welding machine |
| CN201279641Y (en) * | 2008-09-10 | 2009-07-29 | 熊猫电子集团有限公司 | Reflow soldering furnace for nitrogen protection |
| CN103084692A (en) * | 2013-02-04 | 2013-05-08 | 日东电子科技(深圳)有限公司 | Nitrogen protection device |
| CN203140915U (en) * | 2013-02-04 | 2013-08-21 | 日东电子科技(深圳)有限公司 | Nitrogen protection device |
| CN103394787A (en) * | 2013-07-29 | 2013-11-20 | 深圳市劲拓自动化设备股份有限公司 | Nitrogen protector |
-
2015
- 2015-06-05 CN CN201510302160.6A patent/CN104923878A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201146634Y (en) * | 2008-01-25 | 2008-11-05 | 赵永先 | Minitype desk type receding welding machine |
| CN201279641Y (en) * | 2008-09-10 | 2009-07-29 | 熊猫电子集团有限公司 | Reflow soldering furnace for nitrogen protection |
| CN103084692A (en) * | 2013-02-04 | 2013-05-08 | 日东电子科技(深圳)有限公司 | Nitrogen protection device |
| CN203140915U (en) * | 2013-02-04 | 2013-08-21 | 日东电子科技(深圳)有限公司 | Nitrogen protection device |
| CN103394787A (en) * | 2013-07-29 | 2013-11-20 | 深圳市劲拓自动化设备股份有限公司 | Nitrogen protector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387511A (en) * | 2015-10-28 | 2016-03-09 | 桂林新艺制冷设备有限责任公司 | Warmer long in service life |
| CN106392248A (en) * | 2016-11-04 | 2017-02-15 | 天津航空机电有限公司 | Welding protection tool for vacuum atmosphere furnace |
| CN106392248B (en) * | 2016-11-04 | 2019-08-20 | 天津航空机电有限公司 | A kind of welding protecting tool set-up for vacuum atmosphere oven |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |
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| RJ01 | Rejection of invention patent application after publication |