CN2925010Y - Hot-air circulating heating device - Google Patents
Hot-air circulating heating device Download PDFInfo
- Publication number
- CN2925010Y CN2925010Y CN 200620123303 CN200620123303U CN2925010Y CN 2925010 Y CN2925010 Y CN 2925010Y CN 200620123303 CN200620123303 CN 200620123303 CN 200620123303 U CN200620123303 U CN 200620123303U CN 2925010 Y CN2925010 Y CN 2925010Y
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- inner bag
- wind circulation
- heat wind
- heating equipment
- circulation heating
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Abstract
The utility model provides a hot air circulation heater which comprises an outer layer, an inner layer, a volute shell, a rectifying box and a heating wire, among which a through hole is arranged at the bottom of the outer layer, a flange is arranged on the inner side of the outer layer through the through hole. The bottom and profile of the inner layer are connected with the flange and a side plate of the inner layer. The side plate of the inner layer is connected with the outer layer. The volute shell is connected with the inner side of the inner layer. The rectifying box is arranged on the side wall of the inner layer and above the volute shell. The heating wire is positioned between the volute shell and the rectifying box. The utility model overcomes deficiencies of the prior hot air heater such as low thermal efficiency, large energy consumption and unequal temperature, achieves efficient welding for printing circuit board, and especially exhibits distinct advantages of lead-free welding technique.
Description
Technical field
The utility model relates to the electronic printing field, relates in particular to a kind of heat wind circulation heating equipment.
Background technology
At present, the printed substrate of electronic product (PCB, Printed Circuit Board) surface-assembled is produced in the pb-free solder of printed circuit board element pasted on surface especially, uses the hot air reflux welding equipment usually.And one of important device of this hot air reflux welding equipment is exactly a heat wind circulation heating equipment.
As shown in Figure 1, 2, be the structural representation of traditional heat wind circulation heating equipment.At first, with reference to figure 1, outer courage 3, inner bag 4, and spiral case 11 constitute an integral body by welding, as the general frame of whole device.Wherein, outer courage 3 and inner bag 4 are the single face opening box-structure that an iron plate is welded, and are fixed by welding in together, form gap 6 between the two; 11 bottoms that are weldingly fixed on inner bag 4 of spiral case.
Again as shown in Figure 2, rectification box 12 by screw on the inner bag 4 and be positioned at spiral case above, in the side of rectification box 12 heating wire 5 is installed.Two air outlets of spiral case 11 extend in the rectification box 12, and the top of each air outlet is equipped with narrow meshed filter screen 13.Offer a lot of apertures on the nozzle plate 2, be installed in rectification box 12 above.
The tradition heat wind circulation heating equipment is when work, air drives centrifugal impeller 9 by motor 8 and drives, after spiral case 11 superchargings, flow to rectification box 12 through filter screen 13 from two air outlets, be ejected into the surface of PCB1 again from the aperture of nozzle plate 2, PCB1 is carried out Convective Heating, gas after the heat exchange circulates after heating wire 5 heating and draws back spiral case 11, so circulation.
Yet, though above-mentioned existing apparatus can be realized the function of hot air circulation heating, also there are many deficiencies, specific as follows:
1, because outer courage, inner bag and spiral case are the integral solder structures, thus in the course of processing easy deformation, can't guarantee the dimensional stability of dimensional accuracy and long-term work.
2,, therefore there is bigger stress deformation because outer courage, inner bag and spiral case are the integral solder structures.In addition, air velocity distribution is inconsistent, causes the temperature characterisitic instability.
3, all multi-parts of constituent apparatus spray paint after all adopting the welding of stainless steel or general steel plate as inner bag, outer courage, rectification box etc., and heat reflectivity is low, and is also lower to the utilance of radiant energy.
4, poor temperature uniformity.The heat efficiency is difficult to satisfy desired high heat exchange efficiency of pb-free solder and strict uniform temperature, usually can cause PCB to go up crossing the damage or the failure welding of heat sensitive element.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of heat wind circulation heating equipment, can effectively control distortion, cut down the consumption of energy, improves heat exchange efficiency.
For achieving the above object, the technical scheme that provides of the utility model is as follows:
A kind of heat wind circulation heating equipment comprises outer courage, inner bag, spiral case, rectification box and heating wire, wherein:
The bottom of described outer courage offers through hole, and flange passes the inboard that this through hole is arranged on outer courage;
The bottom of described inner bag, side are connected with flange, inner bag side plate respectively, and this inner bag side plate links to each other with outer courage;
Described spiral case links to each other with inner bag is inboard;
Described rectification box is installed on the sidewall of inner bag and is positioned at the top of spiral case;
Described heating wire is placed between spiral case and the rectification box.
Preferably, the sidewall of described outer courage offers hole corresponding to the position of heating wire end.
Preferably, described heating wire and spiral case, rectification box are parallel to each other.
Preferably, described inner bag side plate is connected by screw with outer courage.
Preferably, be connected by screw or rivet with flange bottom the described inner bag; Described inner bag side is connected by screw with the inner bag side plate.
Preferably, described spiral case is connected on the bottom of inner bag inboard by rivet.
Preferably, described rectification box is installed on the sidewall of inner bag by screw or rivet.
Preferably, leave the space between described rectification box and the inner bag.
Preferably, form the space between described outer courage, inner bag side plate, inner bag and the flange, be filled with thermal insulation layer in this space.
Preferably, described rectification box top is connected with nozzle plate by screw, the through hole that to offer several staggered diameters on this nozzle plate be 3～5mm.
Preferably, one or more in described inner bag, inner bag side plate, rectification box and the nozzle plate adopt aluminium sheet or aluminium plating zinc plate to make.
Compared with prior art, the technical scheme that provides of the utility model has following beneficial effect:
The inner bag side plate of the utility model device all is to be connected by modes such as screws with outer courage and inner bag side with being connected of inner bag side plate, and inner bag is connected by flange with outer courage, can reduce the possibility that integral manufacturing and welding bring distortion, also can avoid stress to cause the change of each several part size, also can reduce the loss of heat simultaneously.
By changing the storing position of heating wire, promptly be placed in parallel between spiral case and the rectification box, thereby help improving heat exchange efficiency.The sidewall of outer courage is offered hole corresponding to the position of heating wire end, be beneficial to heating wire and put into or take out by this hole.
PCB and nozzle plate are be arranged in parallel, the air-flow that blows out with the through hole that guarantees from the nozzle plate is perpendicular to PCB, around the rectification box, loop back spiral case with the air that cools off after the PCB heat exchange, thereby reduce interference, improve heat exchange efficiency the ejection of the aperture on nozzle plate heating air flow.
In addition, inner bag side plate and inner bag, rectification box, and nozzle plate etc. change by aluminium sheet or aluminium plating zinc plate and make, make full use of the strong characteristic of heat reflectivity height, radianting capacity of aluminium sheet or aluminium plating zinc plate, thereby help improving the uniform temperature and the efficiency of heating surface of this device.
To sum up, the novel heat wind circulation heating equipment that provides of the utility model has plurality of advantages such as high heat exchange efficiency, good uniform temperature and stability.This device is in heating process, can effectively reduce the technological parameter change that brings because of malformation, can also strengthen heat-insulating capability, reduce thermal loss, and utilize the high heat reflectivity of aluminium plating zinc plate, acquisition than conventional structure high more than 20% the efficiency of heating surface and the uniform temperature that doubles, thereby more can satisfy the harsh technological requirement of pb-free solder.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the structural representation of existing heat wind circulation heating equipment;
Fig. 2 is the part-structure schematic diagram of existing heat wind circulation heating equipment;
Fig. 3 is the structural representation of the utility model heat wind circulation heating equipment;
Fig. 4 is the decomposition texture schematic diagram of the utility model heat wind circulation heating equipment;
Fig. 5 is the utility model heat wind circulation heating equipment first example structure schematic diagram;
Fig. 6 is the utility model heat wind circulation heating equipment second example structure schematic diagram;
Fig. 7 is the utility model heat wind circulation heating equipment the 3rd example structure schematic diagram.
Embodiment
A kind of heat wind circulation heating equipment of the utility model is applicable to the welding equipment in the electric PC board assembling production.Overcome that the existing hot air heating apparatus heat efficiency is low, energy consumption is big, the uneven temperature shortcoming, has realized the high efficiency welding to printed substrate, especially pb-free solder technology (Lead FreeSoldering) is had remarkable advantages.
Shown in Fig. 3,4, this device mainly is to be made of assemblies such as outer courage 3, inner bag side plate 4 ', inner bag 10, spiral case 11, thermal insulation layer 6, heating wire 5, rectification box 12, filter screen 13, nozzle plate 2, centrifugal impeller 9, motor 8.
Wherein, outer courage 3, inner bag 10, inner bag side plate 4 ' and spiral case 11 constitute an integral body by screw.Outer courage 3 is the single face opening box-structure that an iron plate is welded, and offers through hole in the corresponding position, bottom, and flange 7 passes this through hole is connected outer courage 3 by rivet or screw inboard.Inner bag 10 underrun rivets are connected on this flange 7, and the side of inner bag 10 and inner bag side plate 4 ' link to each other by screw.Inner bag side plate 4 ' is connected with outer courage 3 by screw.The space that forms between outer courage 3, inner bag side plate 4 ', inner bag 10 and the flange 7 is filled with thermal insulation layer 6.Spiral case 11 is connected inner bag 10 inboards by rivet.Rectification box 12 is connected on the sidewall of inner bag 10 by rivet or screw, and is positioned at the top of spiral case 11.
In addition, two air outlets of spiral case 11 extend into rectification box 12 inside, and narrow meshed filter screen 13 is equipped with in each air outlet top.Two groups of heating wires 5 of horizontal positioned between spiral case 11 and rectification box 12, this heating wire 5 can be put into or take out by the opening of outer courage 3 sides.Nozzle plate 2 is made by aluminium sheet or aluminium plating zinc plate, offers many apertures on it.Nozzle plate 2 is connected on the rectification box 12 by screw, and constitutes one with rectification box 12.Centrifugal impeller 9 is connected on 8 on the motor, by motor 8 driven rotary.
In said structure, inner bag side plate 4 ' and inner bag 3, rectification box 12 are all made by aluminium sheet or aluminium plating zinc plate, utilize high this characteristic of aluminium sheet or aluminium plating zinc plate heat reflectivity, can improve the uniform temperature and the efficiency of heating surface, make full use of emittance, the dimensional variations that can also avoid stress to cause.Nozzle plate 2 be arranged in parallel with PCB1, to guarantee that the through hole of ∮ 3mm～∮ 5mm blows out from the nozzle plate 2 air-flow is perpendicular to PCB1, and the interval of nozzle plate 2 and PCB1 maintenance 30～80mm, it is certain overlapping so both to have guaranteed that each through hole air-flow heating region had, and can effectively avoid interfering with each other of different through hole air-flows again.The air that cools off after the PCB1 heat exchange loops back spiral case 11 around rectification box 12, reduce the interference to the ejection of the through hole on the nozzle plate 2 heating air flow, improves heat exchange efficiency, guarantees to be heated evenly on the PCB.
With reference to figure 3, the course of work of the utility model heat wind circulation heating equipment is: air is driven by the centrifugal impeller 9 that motor 8 drives, after spiral case 11 superchargings from two air outlets through the filter screens 13 into rectification box 12 that flows, aperture from nozzle plate 2 is ejected into the PCB1 surface again, PCB1 is carried out Convective Heating, gas after the heat exchange again through the space of 10 of inner bag side plate 4 ' and inner bags and the heating wire 5 heating back circulations of flowing through of rectification box 12 sides draw back spiral case 11, so circulate.
The utility model heat wind circulation heating equipment can have multiple mode in actual applications.As required, can be with two-sided heating tunnel structure of the symmetrical up and down composition of two heat wind circulation heating equipments, also can form a single face heating tunnel structure, or several these heat wind circulation heating equipments are horizontally formed the tunnel structure of all lengths by this heat wind circulation heating equipment and a closed box.Be elaborated below by specific embodiment:
Embodiment one
As shown in Figure 5, this two-sided heating tunnel structure unit is formed by two heat wind circulation heating equipments are symmetrical up and down.Centrifugal impeller 9,9 ' is connected on the motor 8,8 ', by motor 8,8 ' driven rotary, blow air is through spiral case 11,11 ', filter screen 13,13 ', rectification box 12,12 ', nozzle plate 2,2 ', PCB1, again through inner bag side plate 4 ', 4 " and inner bag 10,10 ' between space and rectification box 12,12 ' the side heating wire 5,5 ' of flowing through, spiral case 11,11 ' is drawn back in the circulation of heating back.By this two-sided heating tunnel structure, can carry out two-sided hot blast heating to middle cavity PCB partly, to obtain the better efficiency of heating surface.
Embodiment two
As shown in Figure 6, be by the symmetrical up and down two-sided heating tunnel structure that horizontally constitutes of several these heat wind circulation heating equipments.The length of this structure can change according to actual needs.Arrange by several unit horizontal as embodiment one, each unit can be set different temperature separately, and PCB level in the tunnel is advanced, and heats according to corresponding heating process curve.
Embodiment three
As shown in Figure 7, the single face heating tunnel structure of horizontally forming by several these heat wind circulation heating equipments.The length of this structure also can change according to actual needs.The present embodiment structure can be regarded as the heater that removes PCB one side among the embodiment two, only keeps the special case of opposite side heater.PCB is by being contained in the middle transmission chain transmission of tunnel structure that said structure is formed.
Above-described the utility model execution mode does not constitute the qualification to the utility model protection range.Any any modification of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the claim protection range of the present utility model.
Claims (11)
1, a kind of heat wind circulation heating equipment comprises outer courage, inner bag, spiral case, rectification box and heating wire, it is characterized in that:
The bottom of described outer courage offers through hole, and flange passes the inboard that this through hole is arranged on outer courage;
The bottom of described inner bag, side are connected with flange, inner bag side plate respectively, and this inner bag side plate links to each other with outer courage;
Described spiral case links to each other with inner bag is inboard;
Described rectification box is installed on the sidewall of inner bag and is positioned at the top of spiral case;
Described heating wire is placed between spiral case and the rectification box.
2, heat wind circulation heating equipment as claimed in claim 1 is characterized in that: the sidewall of described outer courage offers hole corresponding to the position of heating wire end.
3, heat wind circulation heating equipment as claimed in claim 1 or 2 is characterized in that, described heating wire and spiral case, rectification box are parallel to each other.
4, heat wind circulation heating equipment as claimed in claim 1 is characterized in that: described inner bag side plate is connected by screw with outer courage.
5, heat wind circulation heating equipment as claimed in claim 1 is characterized in that: described inner bag bottom is connected by screw or rivet with flange; Described inner bag side is connected by screw with the inner bag side plate.
6, heat wind circulation heating equipment as claimed in claim 1 is characterized in that: described spiral case is connected on the bottom of inner bag inboard by rivet.
7, heat wind circulation heating equipment as claimed in claim 1 is characterized in that: described rectification box is installed on the sidewall of inner bag by screw or rivet.
8, heat wind circulation heating equipment as claimed in claim 7 is characterized in that: leave the space between described rectification box and the inner bag.
9, heat wind circulation heating equipment as claimed in claim 1 is characterized in that: form the space between described outer courage, inner bag side plate, inner bag and the flange, be filled with thermal insulation layer in this space.
10, heat wind circulation heating equipment as claimed in claim 1 is characterized in that: described rectification box top is connected with nozzle plate by screw, the through hole that to offer several staggered diameters on this nozzle plate be 3～5mm.
11, heat wind circulation heating equipment as claimed in claim 10 is characterized in that: one or more in described inner bag, inner bag side plate, rectification box and the nozzle plate adopt aluminium sheet or aluminium plating zinc plate to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123303 CN2925010Y (en) | 2006-08-01 | 2006-08-01 | Hot-air circulating heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123303 CN2925010Y (en) | 2006-08-01 | 2006-08-01 | Hot-air circulating heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2925010Y true CN2925010Y (en) | 2007-07-18 |
Family
ID=38261435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620123303 Expired - Lifetime CN2925010Y (en) | 2006-08-01 | 2006-08-01 | Hot-air circulating heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2925010Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357982A (en) * | 2013-07-23 | 2013-10-23 | 深圳市劲拓自动化设备股份有限公司 | Preheating device and preheating method of printed circuit board |
| CN105798419A (en) * | 2016-05-12 | 2016-07-27 | 深圳市新迪精密科技有限公司 | Dual-air-outlet type air circulation air flue device and running method thereof |
| CN110440332A (en) * | 2019-08-09 | 2019-11-12 | 安徽冠东科技有限公司 | A kind of interior local circulation formula heater |
-
2006
- 2006-08-01 CN CN 200620123303 patent/CN2925010Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357982A (en) * | 2013-07-23 | 2013-10-23 | 深圳市劲拓自动化设备股份有限公司 | Preheating device and preheating method of printed circuit board |
| CN103357982B (en) * | 2013-07-23 | 2016-01-27 | 深圳市劲拓自动化设备股份有限公司 | A kind of preheating device of printed circuit board and pre-heating mean |
| CN105798419A (en) * | 2016-05-12 | 2016-07-27 | 深圳市新迪精密科技有限公司 | Dual-air-outlet type air circulation air flue device and running method thereof |
| CN110440332A (en) * | 2019-08-09 | 2019-11-12 | 安徽冠东科技有限公司 | A kind of interior local circulation formula heater |
| CN110440332B (en) * | 2019-08-09 | 2020-12-22 | 马鞍山市黄池食品(集团)金菜地畜业有限公司 | Indoor local circulating type warmer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN CITY JINTUO AUTOMATIC EQUIPMENT CO., LTD. Free format text: NEW ADDRESS: JINTUO AUTOMATIZATION INDUSTRY FACTORY DISTRICT, HEZHOU INDUSTRY DISTRICT, NORTH SIDE,GUANGSHEN SPEEDWAY, XIXIANG STREET, BAOAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE, ZIP CODE:518102 |
|
| CP02 | Change in the address of a patent holder |
Address after: Shenzhen, Guangdong, Baoan District province Xixiang Street on the north side of Guangzhou Shenzhen Expressway, crane Chau Industrial Zone Jin Tuo automation industrial plant, postcode: 518102 Patentee after: Shenzhen JT Automation Equipment Co., Ltd. Address before: Guangdong Province, Shenzhen city Baoan District West Township Lake Garden tenth building 603 room, zip code: 518128 Patentee before: Shenzhen JT Automation Equipment Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN JINTUO AUTOMATIC EQUIPMENT STOCK CO., LTD Free format text: FORMER NAME: SHENZHEN JINTUO AUTOMATIC EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518000, Shenzhen Baoan District Xixiang Street on the north side of Guangzhou Shenzhen Expressway, crane Chau Industrial Zone, Jin Tuo automation industrial plant Patentee after: Shenzhen JT Automation Equipment Co., Ltd. Address before: 518102, Shenzhen, Guangdong, Baoan District province Xixiang Street on the north side of Guangzhou Shenzhen Expressway, crane Chau Industrial Zone, Jin Tuo automation industrial plant Patentee before: Shenzhen JT Automation Equipment Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070718 |
|
| EXPY | Termination of patent right or utility model |