CN203140915U - Nitrogen protection device - Google Patents
Nitrogen protection device Download PDFInfo
- Publication number
- CN203140915U CN203140915U CN 201320062105 CN201320062105U CN203140915U CN 203140915 U CN203140915 U CN 203140915U CN 201320062105 CN201320062105 CN 201320062105 CN 201320062105 U CN201320062105 U CN 201320062105U CN 203140915 U CN203140915 U CN 203140915U
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- China
- Prior art keywords
- nitrogen
- protection device
- heating tube
- conduit
- heater unit
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Abstract
The utility model discloses a nitrogen protection device which comprises an electric control device, a nitrogen pipe, an electric heating device, a soldering furnace and a nitrogen circulation cover. The electric heating device comprises a heating pipe for heating nitrogen, a gas inlet of the heating pipe is connected with an external nitrogen pipeline, a gas outlet of the heating pipe is connected with a gas inlet of the nitrogen pipe, a gas outlet of the nitrogen pipe is connected with a gas inlet of the nitrogen circulation cover, and the nitrogen circulation cover covers on a furnace mouth of the soldering furnace; the nitrogen pipe is located on the outer side of the soldering furnace; and the electric heating device is controlled by the electric control device. The nitrogen protection device has the advantages that: the nitrogen pipe is prevented from being corroded, and reliability and safety of the nitrogen pipe are improved; and the nitrogen is heated by the electric heating device independently, the electric heating device is controlled by the electric control device, output power of the electric heating device can be controlled accurately, required nitrogen temperature is obtained, and adaptability of a wave-soldering device to different printed circuit board (PCB) welding processes is improved.
Description
Technical field
The utility model relates to the nitrogen protection field of selective wave-soldering, relates in particular to a kind of nitrogen protection device.
Background technology
Existing selective wave-soldering nitrogen protection device from adding thermal design and temperature control assembly, can not accurately not controlled the temperature of nitrogen, to the bad adaptability of different pcb board welding procedures.Existing selective wave-soldering nitrogen protection technology, normally external or pass the tin furnace internal-lining nitrogen conduit, by the temperature heated nitrogen of tin stove scolder; And the nitrogen pipeline that places tin furnace internal-lining portion to rely on Xi Wenre to transmit very easily is corroded, and directly influences device security and reliability.
The utility model content
The utility model provides a kind of temperature that can accurately control nitrogen, improves Wave soldering apparatus to the adaptive nitrogen protection device of different pcb board welding procedures.
To achieve these goals, the solution that the utility model proposes is: 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 for the heating tube to the nitrogen heating, 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 the 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.
Wherein, described electric heater unit also comprises electrical bar, this electrical bar comprises for the barred body of heating with for the support portion of fixing this barred body, one end of barred body is fixed on the support portion, the other end of barred body all inserts in the described heating tube and is gapped with the tube wall of heating tube, and the support portion is connected with heating tube is airtight; Heating tube sidewall near support portion one side is provided with the air inlet that opening forms described heating tube, and this air inlet connects an air inlet pipe, and this air inlet pipe connects described outside nitrogen pipeline.
Wherein, a temperature sensor is installed in the described nitrogen conduit, this temperature sensor is electrically connected with described electric control gear.
Wherein, described support portion and described airtight connection of heating tube screw thread.
Wherein, described nitrogen conduit gas outlet end and dismountable airtight connection of the air admission hole of described nitrogen circulation outer cover.
Wherein, the air admission hole of the adaptive described nitrogen circulation outer cover of insertion of described nitrogen conduit gas outlet end and be connected with this air admission hole buckle.
Wherein, socket one high-temperature resistant seal ring on the outer wall of described nitrogen conduit, this high-temperature resistant seal ring closely contacts with the hole wall of described air admission hole.
Wherein, described electric heater unit is fixedly mounted on the face of described tin furnace side, the fire door level of described tin stove is provided with outstanding thin plate laterally, and this thin plate is provided with through hole, and the gas outlet end of described nitrogen conduit is adaptive passes the air admission hole that this hole inserts described nitrogen circulation outer cover.
Wherein, the described electric heater unit outside is provided with baffle plate, and baffle plate and described thin plate surround a protective cover.
The beneficial effects of the utility model are: difference and the nitrogen protection device of prior art, can not accurately control the temperature of nitrogen, and to the bad adaptability of different pcb board welding procedures, nitrogen conduit passes the tin furnace interior simultaneously, and nitrogen pipeline very easily is corroded; The benefit of nitrogen protection device of the present utility model is: 1, nitrogen conduit is installed in the outside of tin stove, has avoided nitrogen conduit to be corroded, improve reliability and the security of nitrogen conduit; 2, electric heater unit independently heats to nitrogen, and is subjected to the control of electric control gear, can accurately control the power output of electric heater unit, obtains required nitrogen temperature, improves Wave soldering apparatus to the adaptability of different pcb board welding procedures.
Description of drawings
Fig. 1 is the structural representation of an embodiment of nitrogen protection device of the present utility model;
Fig. 2 is the structural representation of the another embodiment of nitrogen protection device of the present utility model.
Among the 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.
The specific embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1, a kind of nitrogen protection device of present embodiment comprises electric control gear (not marking among the 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 lids are 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 between each parts generally can be used the connector 34 of pipeline, and convenient the turning connects etc.
The course of work of the present utility model is: outside nitrogen enters the electric heater unit heating, and the nitrogen after the heating enters nitrogen circulation outer cover 20 by nitrogen conduit 40, wherein, and the power of electric cabinet control electric heater unit, the temperature that control is heated nitrogen etc.
Nitrogen protection device of the present utility model is installed in the outside of tin stove 10 with nitrogen conduit 40, has avoided nitrogen conduit 40 to be corroded, and improves reliability and the security of nitrogen conduit 40; Electric heater unit independently heats to nitrogen, and is subjected to the control of electric control gear, can accurately control the power output of electric heater unit, obtains required nitrogen temperature, improves Wave soldering apparatus to the adaptability of different pcb board welding procedures.
In the present embodiment, described electric heater unit also comprises electrical bar (not marking among the figure); Described electrical bar comprises for the barred body (figure does not mark) of heating with for the support portion 32 of fixing this barred body, one end of barred body is fixed on the support portion 32, the other end of barred body all inserts in the described heating tube 33 and is gapped with the tube wall of heating tube 33, support portion 32 and 33 airtight connections of heating tube; Heating tube 33 sidewalls near support portion 32 1 sides are 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 inserts in the heating tube 33 and is gapped with the tube wall of heating tube 33, gapped is circulation for nitrogen, and in the barred body insertion heating tube 33 nitrogen that enters into heating tube 33 is contacted fully fully with the barred body of electrical bar, improve the efficient of heating, and opening is located on the heating tube sidewall of close support portion 32 1 sides, what can increase nitrogen and barred body contacts path and time of contact, improve the efficient of heating, in order better to improve time of contact and to contact the path, can also be after nitrogen enters heating tube 33, the motion of in heating tube, spinning, its concrete embodiment can be on barred body or the heating tube inwall is provided with spiral fin; The support portion 32 of electric hot plate is in order to keep its air-tightness, to prevent gas leakage with described 33 airtight connections of heating tube.Further, described support portion 32 and described airtight connection of heating tube 33 screw threads make things convenient for both to dismantle and convenient for maintaining are installed.In another embodiment, electric heater unit can make the outer cover connecting resistance silk at heating tube 33, heats.
In the present embodiment, in the described nitrogen conduit 40 temperature sensor 35 is installed, this temperature sensor 35 is electrically connected with described electric control gear, can know the temperature in the nitrogen conduit 40 so at any time, and by the temperature of electric control gear control electric heater unit heated nitrogen to appointment, temperature sensor sends a signal to electric control gear then, and electric cabinet control electric heater unit keeps the power of output, and intelligence is convenient.
In the present embodiment; described nitrogen conduit 40 gas outlets are 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 that the gas outlet end of described nitrogen conduit 40 is adaptive also is connected with this air admission hole buckle; buckle dismounting easy to connect; it can certainly be the releasable connection of other modes; such as being spirally connected between the two etc.; both dismountable connections when scolder occurring and stop up nitrogen circulation outer cover 20 steam vents, can be pulled down nitrogen circulation outer cover 20 fast and safeguard; and need not to tear open parts such as nitrogen heater, make things convenient for the maintenance of nitrogen protection device.
In the present embodiment, socket one high-temperature resistant seal ring 36 on the outer wall of described nitrogen conduit 40, this high-temperature resistant seal ring 36 closely contacts with the hole wall of described air admission hole, can further improve the air-tightness of both junctions.
In the present embodiment, described electric heater unit is fixedly mounted on described tin stove 10 sides, the fire door level of described tin stove 10 is provided with outstanding thin plate 11 laterally, this thin plate 11 is provided with through hole, the gas outlet end of described nitrogen conduit 40 is adaptive passes the air admission hole that this through hole inserts described nitrogen circulation outer cover, can prevent that like this staff from contacting the side of winding by hand to the tin stove and scald with nitrogen conduit 40 with electric heater unit because of carelessness.
In another embodiment, as shown in Figure 2, the described electric heater unit outside is provided with baffle plate 50, and baffle plate and described thin plate surround a protective cover, can prevent further that like this operating personnel from scalding.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
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 for the heating tube to the nitrogen heating, 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 the 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.
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 for the barred body of heating with for the support portion of fixing this barred body, one end of barred body is fixed on the support portion, the other end of barred body all inserts in the described heating tube and is gapped with the tube wall of heating tube, and the support portion is connected with heating tube is airtight;
Heating tube sidewall near support portion one side is provided with the air inlet that opening forms described heating tube, and this air inlet connects an air inlet pipe, and this air inlet pipe connects described outside nitrogen pipeline.
3. nitrogen protection device according to claim 2 is characterized in that, a temperature sensor is installed in the described nitrogen conduit, and 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 and described airtight connection of heating tube screw thread.
5. nitrogen protection device according to claim 2 is characterized in that, described nitrogen conduit gas outlet and dismountable airtight connection of the air admission hole of described nitrogen circulation outer cover.
6. nitrogen protection device according to claim 5 is characterized in that, the air admission hole of the described nitrogen circulation outer cover of insertion that described nitrogen conduit gas outlet end is adaptive also is connected with this air admission hole buckle.
7. nitrogen protection device according to claim 5 is characterized in that, socket one high-temperature resistant seal ring on the outer wall of described nitrogen conduit, and this high-temperature resistant seal ring closely contacts with the hole wall of described air admission hole.
8. nitrogen protection device according to claim 5; it is characterized in that; described electric heater unit is fixedly mounted on the face of described tin furnace side; the fire door level of described tin stove is provided with outstanding thin plate laterally; this thin plate is provided with through hole, and the gas outlet end of described nitrogen conduit is adaptive passes the air admission hole that this hole inserts described nitrogen circulation outer cover.
9. nitrogen protection device according to claim 8 is characterized in that, the described electric heater unit outside is provided with baffle plate, and baffle plate and described thin plate surround a protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320062105 CN203140915U (en) | 2013-02-04 | 2013-02-04 | Nitrogen protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320062105 CN203140915U (en) | 2013-02-04 | 2013-02-04 | Nitrogen protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203140915U true CN203140915U (en) | 2013-08-21 |
Family
ID=48968471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320062105 Expired - Lifetime CN203140915U (en) | 2013-02-04 | 2013-02-04 | Nitrogen protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203140915U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084692A (en) * | 2013-02-04 | 2013-05-08 | 日东电子科技(深圳)有限公司 | Nitrogen protection device |
| CN104923878A (en) * | 2015-06-05 | 2015-09-23 | 柳州市山泰气体有限公司 | Nitrogen protection device |
| CN106944704A (en) * | 2016-12-28 | 2017-07-14 | 乔治洛德方法研究和开发液化空气有限公司 | A kind of inert gas heater for wave soldering device |
-
2013
- 2013-02-04 CN CN 201320062105 patent/CN203140915U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084692A (en) * | 2013-02-04 | 2013-05-08 | 日东电子科技(深圳)有限公司 | Nitrogen protection device |
| CN104923878A (en) * | 2015-06-05 | 2015-09-23 | 柳州市山泰气体有限公司 | Nitrogen protection device |
| CN106944704A (en) * | 2016-12-28 | 2017-07-14 | 乔治洛德方法研究和开发液化空气有限公司 | A kind of inert gas heater for wave soldering device |
| CN106944704B (en) * | 2016-12-28 | 2019-10-25 | 乔治洛德方法研究和开发液化空气有限公司 | A kind of inert gas heating device for wave soldering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |