CN201360358Y

CN201360358Y - Electrical heating filament laying structure for electronic component firing furnace

Info

Publication number: CN201360358Y
Application number: CNU200920037199XU
Authority: CN
Inventors: 刘远
Original assignee: Suzhou Huike Equipment Co Ltd
Current assignee: Suzhou Huike Equipment Co Ltd
Priority date: 2009-02-20
Filing date: 2009-02-20
Publication date: 2009-12-09
Anticipated expiration: 2019-02-20

Abstract

An electrical heating filament laying structure for an electronic component firing furnace belongs to the technical field of auxiliary facility for electrical heating firing furnace. The electric component firing furnace comprises a first and a second electrical heating filaments and a furnace body, wherein the furnace body comprises a first and a second dome bricks and a first and a second side bricks and a bottom brick used for forming the furnace chamber, and the first electrical heating filament is laid on the first and the second dome bricks, while the second electrical heating filament is laid on the bottom brick. The utility model is characterized in that a third electrical heating filament is laid on the first side brick, a fourth electrical heating filament is laid on the second side brick, and the first, the third and the fourth electrical heating filaments are connected in series to form an independent circuit, while the second electrical heating filament forms an independent circuit independently. The utility model has the advantages that the furnace chamber is heated from four directions, so as to guarantee that the electronic component in the furnace chamber can receive an even heating effect under the burning atmosphere, which plays a positive role in improving the product quality.

Description

The laying structure of the electrical heating wire of electronic component burning furnace

Technical field

The utility model belongs to the technical field of auxiliary facilities of electric heating firing furnace, is specifically related to a kind of laying structure of electrical heating wire of electronic component burning furnace.

Background technology

Along with electronic product develops to digitlization, multifunction and miniaturization, and electrical communication system develops to networking, high speed and broadband direction, thereby promoted the process that the novel electronic components and parts develop to microminiaturization, chip type, high performance, integrated, intellectuality and environmental protection and energy saving direction.Miniature and the chip type technology of electronic devices and components, low-temp ceramics are total to the emphasis that burning technology and greenization production technology or the like become technical progress of industry and technology competition.

Technical staff in the electronic applications is known, and chip sensitive components and sensor technology development trend show as intellectuality, microminaturization, low power consumption, chip type and array type etc.For example surface attaching type (SMD) thermistor has that volume is little, thermal time constant is little, interchangeability is good, stable performance and reliability advantages of higher and adapt to overtemperature protection element with nickel-cadmium cell, Ni-MH battery and Li-Ion rechargeable battery, and as the temperature compensation device of electronic circuit, LCDs and crystal oscillator.But, above mentioned various forms of electronic devices and components to burn till requirement comparatively harsh, be embodied in: require product in the firing atmosphere stove, to obtain even temperature, otherwise can influence sintering effect, especially those electronic devices and components that are used for surface-adhered type thermistor body as the aforementioned, if can not keep thermally equivalent in the atmosphere firing furnace, its reliability in use can't ensure so.

At present, the used electronic component burning furnace of electron trade is the qualification rate of the electronic component products after electronic devices and components firing atmosphere stove burns till and unsatisfactory.This people custom is attributed to the material of electronic devices and components, yet firing furnace be there is no the interest of concern, thereby formed the technology prejudice that attends to the trivialities and neglect the fundamentals and hanker after the material of electronic devices and components is explored.Reason is thought, the electronic component burning furnace technology is tending towards saturated and does not have being able to improved space, but, explore and think through the applicant is long-term, cause high-end electricity that electronic devices and components especially use in the high-end technology field the low reason of product qualified rate of components and parts can not get rid of the reason of firing furnace.No matter be that the laying structure of the electrical heating wire of domestic or external electronic component burning furnace is lost reasonability in the prior art particularly, only be on dome brick that upper and lower two faces that constitute burner hearth are burner hearth and end brick (refractory brick), to lay electrical heating wire or claim electrical heating elements, so structure can have a strong impact on the thermally equivalent to electronic devices and components, thereby be necessary to be improved, technical scheme described below produces under this background.

Summary of the invention

Task of the present utility model is to provide a kind of laying structure that can make the electrical heating wire of the electronic component burning furnace that the product that burnt till is heated evenly.

Task of the present utility model is finished like this, a kind of laying structure of electrical heating wire of electronic component burning furnace, described electronic component burning furnace comprises first, second electrical heating wire and body of heater, body of heater comprises and is used to constitute first of burner hearth, second dome brick, first, the second side brick and end brick, first electrical heating wire is laid in first, on second dome brick, and second electrical heating wire is laid on the end brick, characteristics are: also be laid with the 3rd electrical heating wire on the described first side brick, and on the described second side brick, be laid with the 4th electrical heating wire, described first, the 3rd, the 4th electrical heating wire is one another in series connection and constitutes an independently loop, and described second electrical heating wire has an independent loop of one's own.

First dome brick described in the utility model is installed with first location hook towards a side of described burner hearth, second dome brick towards be installed with second location hook towards a side of burner hearth, the first side brick is installed with the 3rd towards a side of described burner hearth, the 4th location hook, the second side brick is installed with the 5th towards a side of described burner hearth, the 6th location hook, end brick is installed with the 7th location hook towards a side of described burner hearth, described first electrical heating wire is positioned at first, on second location hook, described second electrical heating wire is positioned at the 4th, the 6th, on the 7th location hook, described the 3rd electrical heating wire is positioned on the 3rd location hook, and described the 4th electrical heating wire is positioned on the 5th location hook.

The shape of first to the 7th location hook described in the utility model is the steelyard hook shape.

Constitute the electrical heating wire laying groove on the end described in the utility model brick, described the 7th location hook is positioned at the electrical heating wire laying groove, and described the 4th, the 6th location hook is corresponding with described electrical heating wire laying groove respectively.

The top and the middle position of the end described in the utility model brick constitute guide ledges.

First electrical heating wire described in the utility model with case of bending be positioned on first, second location hook, described second electrical heating wire is positioned on the 4th, the 6th, the 7th location hook with being case of bending, described the 3rd electrical heating wire is positioned on the 3rd location hook with being case of bending, described the 4th electrical heating wire with case of bending be positioned on the 5th location hook.

Described in the utility modelly be bent into bending of S shape or U-shaped bending.

First, second, third, fourth electrical heating wire described in the utility model is molybdenum filament.

First, second dome brick described in the utility model, first, second side brick and end brick are refractory brick.

First, second dome brick described in the utility model is the herringbone configuration each other.

The advantage of the technical scheme that the utility model is recommended: owing on first, second side brick that constitutes burner hearth, set up the 3rd, the 4th electrical heating wire, therefore can embody position, four directions heating to burner hearth, thereby guarantee to place the interior electronic devices and components of burner hearth in the effect that the firing atmosphere acquisition is heated evenly, have positive effect to improving the quality of products.

Description of drawings

Fig. 1 is a specific embodiment structure chart of the present utility model.

Fig. 2 is the cutaway view of Fig. 1.

Embodiment

Ask for an interview Fig. 1, provided among the figure electronic component burning furnace body of heater 1 length direction a part or claim a unit (section), actual body of heater 1 is tens meters, tens of rice and even rice up to a hundred, so the length of body of heater 1 is not subjected to illustrated restriction.Body of heater 1 comprises first, second dome brick 11,12 that forms the herringbone trend each other, splice in the joggle mode mutually in the upper edge of the length direction of first, second dome brick 11,12, and splice in the upper edge of the lower edge of the length direction of first dome brick 11 and the first side brick 13, the upper edge edge of the lower edge of the length direction of second dome brick 12 and the second side brick 14 is joined, match with first,

second side brick

13,14 in the two ends of end brick 15, first, second dome brick 11,12, the formed cavity of first,

second side brick

13,14 and end brick 15 overlap joint backs are the furnace chamber of body of heater 1 or claim burner hearth.Is that the inboard is installed with one first location hook 111 at first dome brick 11 towards a side of burner hearth, second dome brick 12 is installed with second location hook 121 towards burner hearth one side, the first side brick 13 (brick on the illustrated left side) is installed with the 3rd, the 4th location hook 131,132 towards a side of burner hearth, wherein, the 4th location hook 132 is positioned at the below of the 3rd location hook 131, the second side brick 14 (brick on illustrated the right) is installed with the 5th, the 6th location hook 141,142 (Fig. 2 shows) towards a side of burner hearth, wherein, the 6th location hook 142 is positioned at the below of the 5th location hook 141.End brick 15 constitutes electrical heating wire laying groove 152, in this groove, set firmly the 7th location hook 151, and the position placed in the middle in the upper surface of end brick 15 constitutes a guide ledges 153, this guide ledges 153 is to be used for matching with groove on the frid 6, so that by 6 location of 153 pairs of frids of guide ledges and guide effect, place push pedal 9 (Fig. 2 shows) on the frid 6, push pedal 9 is used to place electronic devices and components 7 (Fig. 2 shows).The shape of aforementioned first to the 7th location hook 111,121,131,132,141,142,152 is steelyard hook shape.

Continue to see Fig. 1, first electrical heating wire 2 first, second dome brick conduit 112,122 from first, second dome brick 11,12 introduce and with S shape attitude be positioned on first, second location hook 111,121, and then draw a connector lug from privates pipe 113; The three or four

electrical heating wire

4,5 is positioned at respectively on the 3rd, the 5th location hook 131,141 with S shape attitude ground, and then draw a connector lug from privates pipe 133, aforesaid two connector lugs are electrically connected with controller, use making the first, the 3rd, the 4th

electrical heating wire

2,4,5 form an independently electric heating loop with the series connection form.The middle part of second electrical heating wire 3 is positioned on the 4th, the 6th, the 7th location hook 132,142,151 agley with S shape equally, draw with controller a pair of privates pipe 133 of two terminations of second electrical heating wire 3 from the first side brick 13 and be electrically connected, this second electrical heating wire 3 self forms an electric heating loop.From the above, the determining positions of first to the 7th location hook 111,121,131,132,141,142,151 electrical heating wire lay form, each electrical heating wire is only spacing and do not fix with location hook by each location hook, and aforesaid first to fourth

electrical heating wire

2,3,4,5 is molybdenum filament.Though the applicant has only provided a heating unit of body of heater 1 in Fig. 1, and show be used for and adjacent cells between the separate space brick 8 separated with passway 81, yet according to the reason of drawing inferences about other cases from one instance, the situation of laying that can analogize the electrical heating wire of other unit that body of heater 1 fully is as hereinbefore.

Ask for an interview Fig. 2, the electronic devices and components 7 that need burn till are by placing push pedal 9 carryings on the frid 6 and placing in the burner hearth of body of heater 1, make by the first, the 3rd, the 4th

electrical heating wire

2,4,5 by appliance controller and promptly to heat with the electric heating loop works that connect in series draws, make the electric heating loop works that forms by second electrical heating wire 3 simultaneously, thereby simultaneously electronic devices and components 7 are heated by top, both sides and bottom, owing to be that four direction heats simultaneously, can ensure that therefore electronic devices and components 7 are heated evenly and are guaranteed quality.After heating is finished, take next section that electronic devices and components 7 enter body of heater 1 by frid 6, for example the passway 81 (Fig. 1 shows) from separate space brick 8 enters next section, until finish the overall process that electronic devices and components 7 are heated in the firing atmosphere stove.The applicant has made contrast test with the utility model structure and prior art (upper and lower heating), and the result shows, adopts the qualification rate of the resulting electronic devices and components of four directions position mode of heating of the present utility model to have and significantly improves.

Claims

1, a kind of laying structure of electrical heating wire of electronic component burning furnace, described electronic component burning furnace comprises first, second electrical heating wire (2,3) and body of heater (1), body of heater (1) comprises and is used to constitute first of burner hearth, second dome brick (11,12), first, the second side brick (13,14) and end brick (15), first electrical heating wire (2) is laid in first, second dome brick (11,12) on, and second electrical heating wire (3) is laid on the end brick (15), it is characterized in that: on the described first side brick (13), also be laid with the 3rd electrical heating wire (4), and on the described second side brick (14), be laid with the 4th electrical heating wire (5), described first, the 3rd, the 4th electrical heating wire (2,4,5) be one another in series connection and constitute an independently loop, and described second electrical heating wire (3) has an independent loop of one's own.

2, the laying structure of the electrical heating wire of electronic component burning furnace according to claim 1, it is characterized in that described first dome brick (11) is installed with first location hook (111) towards a side of described burner hearth, second dome brick (12) towards be installed with second location hook (121) towards a side of burner hearth, the first side brick (13) is installed with the 3rd towards a side of described burner hearth, the 4th location hook (131,132), the second side brick (14) is installed with the 5th towards a side of described burner hearth, the 6th location hook (141,142), end brick (15) is installed with the 7th location hook (151) towards a side of described burner hearth, described first electrical heating wire (2) is positioned at first, second location hook (111,121) on, described second electrical heating wire (3) is positioned at the 4th, the 6th, the 7th location hook (132,142,151) on, described the 3rd electrical heating wire (4) is positioned on the 3rd location hook (131), and described the 4th electrical heating wire (5) is positioned on the 5th location hook (141).

3, the laying structure of the electrical heating wire of electronic component burning furnace according to claim 2 is characterized in that the shape of described first to the 7th location hook (111,121,131,132,141,142,151) is the steelyard hook shape.

4, the laying structure of the electrical heating wire of electronic component burning furnace according to claim 2, it is characterized in that constituting on the brick of the described end (15) electrical heating wire laying groove (152), described the 7th location hook (151) is positioned at electrical heating wire laying groove (152), and described the 4th, the 6th location hook (132,142) is corresponding with described electrical heating wire laying groove (152) respectively.

5, according to the laying structure of the electrical heating wire of claim 1 or 2 or 4 described electronic component burning furnaces, it is characterized in that the top of brick of the described end (15) and middle position constitute guide ledges (153).

6, the laying structure of the electrical heating wire of electronic component burning furnace according to claim 2, it is characterized in that described first electrical heating wire (2) with case of bending be positioned on first, second location hook (111,121), described second electrical heating wire (3) is positioned on the 4th, the 6th, the 7th location hook (132,142,151) with being case of bending, described the 3rd electrical heating wire (4) is positioned on the 3rd location hook (131) with being case of bending, described the 4th electrical heating wire (5) with case of bending be positioned on the 5th location hook (141).

7, the laying structure of the electrical heating wire of electronic component burning furnace according to claim 6 is characterized in that bending of the described S of being bent into shape or U-shaped bending.

8, according to the laying structure of the electrical heating wire of claim 1 or 2 or 6 described electronic component burning furnaces, it is characterized in that described first, second, third, fourth electrical heating wire (2,3,4,5) is molybdenum filament.

9, the laying structure of the electrical heating wire of electronic component burning furnace according to claim 1 and 2 is characterized in that described first, second dome brick (11,12), first, second side brick (13,14) and end brick (15) are refractory brick.

10, the laying structure of the electrical heating wire of electronic component burning furnace according to claim 9 is characterized in that described first, second dome brick (11,12) is the herringbone configuration each other.