JP2522877B2 - Bed plate type pusher furnace - Google Patents
Bed plate type pusher furnaceInfo
- Publication number
- JP2522877B2 JP2522877B2 JP4060094A JP6009492A JP2522877B2 JP 2522877 B2 JP2522877 B2 JP 2522877B2 JP 4060094 A JP4060094 A JP 4060094A JP 6009492 A JP6009492 A JP 6009492A JP 2522877 B2 JP2522877 B2 JP 2522877B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- gas
- plate type
- bed plate
- type pusher
- 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 - Lifetime
Links
Landscapes
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は電子部品等の焼成に使用
される複列式の台板式プッシャー炉の改良に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a double-row bed plate type pusher furnace used for firing electronic parts and the like.
【０００２】[0002]
【従来の技術】電子部品等の焼成に使用される複列式の
台板式プッシャー炉の予熱帯においては、炉内の温度分
布を均一化するために、図４に示すように炉体21の天井
部に設けたファン22により炉内ガスを吸引し、炉内の両
側に設けた孔明板23から台板24上の製品に向かって吹き
付けて循環させる構造が取られている。2. Description of the Related Art In a preheat zone of a double-row bed plate type pusher furnace used for firing electronic parts, etc., in order to make the temperature distribution in the furnace uniform, as shown in FIG. The structure is such that the fan 22 provided on the ceiling portion sucks the gas in the furnace, and blows it toward the products on the base plate 24 from the perforated plates 23 provided on both sides of the furnace to circulate the gas.
【０００３】ところがこのような従来の構造では、炉体
21の天井部から炉内下方に向けてガスが流れ、このガス
が孔明板23の孔から吹き抜ける形であるため、炉内上下
方向でガスの吹き抜ける量が大きく変化してしまう欠点
があった。また、台板24上の製品のうち孔明板23に面す
る部分には整流されたガスが均一に当たるものの、炉の
中央側では流れが乱れるために製品に均一にガス流が当
たらず、温度差が生じ易かった。特に炉体21の予熱帯の
脱バインダーゾーンでは製品から蒸発したバインダーガ
スの濃度差が大きくなり、均一焼成の妨げとなってい
た。またこのような従来の孔明板23は炉体21の床面に立
設したものであるため、炉体21と孔明板23との熱膨脹率
の差により、熱歪を生じ易いという問題もあった。However, in such a conventional structure, the furnace body is
Since gas flows downward from the ceiling of the furnace 21 toward the inside of the furnace, and this gas blows through the holes of the perforated plate 23, there is a drawback that the amount of gas blown through in the vertical direction of the furnace changes greatly. In addition, although the rectified gas uniformly hits the part of the product on the base plate 24 facing the perforated plate 23, the gas flow did not hit the product uniformly because the flow was disturbed in the center side of the furnace, and the temperature difference Was likely to occur. In particular, in the pre-tropical debinder zone of the furnace body 21, the difference in concentration of the binder gas evaporated from the product was large, which hindered uniform firing. Further, since such a conventional perforated plate 23 is erected on the floor surface of the furnace body 21, there is a problem that thermal strain is likely to occur due to the difference in thermal expansion coefficient between the furnace body 21 and the perforated plate 23. .
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解消して、台板上の製品間に均一なガス流を
生起させることができ、炉内温度やバインダーガスの濃
度の均一化を図ることができる台板式プッシャー炉を提
供するために完成されたものである。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and can generate a uniform gas flow between products on a base plate. It was completed in order to provide a base plate type pusher furnace that can be made uniform.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明は、被焼成品を載せた台板が２列に
なって進行する炉体の予熱帯の２列の台板の中央部に、
被焼成品に面する両側面に多数の吸引孔を持つ炉内ガス
吸引筒を炉体の天井から吊り下げて一定間隔で取り付け
るとともに、この炉内ガス吸引筒の上部に、吸引した炉
内ガスを炉室内に遠心方向に流す吸引ファンを設けたこ
とを特徴とするものである。DISCLOSURE OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, is a pre-tropical two-row base plate of a furnace body in which the base plates on which the products to be fired are placed advance in two rows. In the center of
A furnace gas suction cylinder with a large number of suction holes on both sides facing the product to be fired was hung from the ceiling of the furnace body and attached at regular intervals, and the furnace suctioned above the furnace gas suction cylinder.
It is characterized in that a suction fan for flowing the inner gas in the centrifugal direction is provided in the furnace chamber .
【０００６】[0006]
【作用】本発明の台板式プッシャー炉においては、炉体
の予熱帯の２列の台板の中央部に設けられた炉内ガス吸
引筒の多数の吸引孔から炉内ガスを吸引して炉室内に流
すため、従来のように製品の外側から炉内ガスを吹き付
ける方式の炉よりも台板上の製品間に均一なガス流を生
起させることができ、炉内温度やバインダーガスの濃度
の均一化を図ることができる。またこの吸引筒は炉体の
天井から吊り下げたものであるので、炉体と吸引筒との
熱膨脹差の影響を受けにくく、従来のような熱歪を生じ
にくい利点がある。In base plate type pusher furnace the present invention, the furnace body furnace by sucking from a number of suction holes in the furnace provided in a central portion of the two rows of base plate gas suction tube furnace gas preheating zone Flow into the room
Be due, as in the prior art can be occur a uniform flow of gas between the product on the outer blowing furnace gas from system platform than the furnace plate products, uniformity of density of the furnace temperature and the binder gas Can be achieved. Further, since this suction cylinder is hung from the ceiling of the furnace body, it is less affected by the difference in thermal expansion between the furnace body and the suction cylinder, and there is an advantage that thermal distortion unlike the conventional case is less likely to occur.
【０００７】[0007]
【実施例】次に本発明を図示の実施例によって更に詳細
に説明する。図１は本発明の実施例の台板式プッシャー
炉の予熱帯を入口方向から見た断面図であり、図２はそ
の部分を炉の長手方向に切断した断面図である。これら
の図中、１は炉体、２はその床部に２列に設けられた炉
床板、３はこれらの炉床板２、２上を炉体１の入口に設
けられたプッシャーに押されて２列に進行する台板であ
る。各台板３上には匣鉢に収納した焼成されるべき製品
４が多段に積載されている。５は炉体１の内部両側部の
天井から吊り下げられたマッフル式のヒータである。The present invention will now be described in more detail with reference to the illustrated embodiments. FIG. 1 is a cross-sectional view of a preheat zone of a bed plate type pusher furnace according to an embodiment of the present invention as seen from the inlet direction, and FIG. 2 is a cross-sectional view of that portion cut in the longitudinal direction of the furnace. In these figures, 1 is a furnace body, 2 is a hearth plate provided in two rows on the floor, and 3 is a pusher provided at the inlet of the furnace body 1 above these hearth plates 2 and 2. It is a base plate that advances in two rows. On each base plate 3, products 4 to be fired, which are stored in a bowl, are stacked in multiple stages. Reference numeral 5 is a muffle-type heater suspended from the ceiling on both sides inside the furnace body 1.
【０００８】上記の２列の台板３、３の中央部に、炉内
ガス吸引筒６が設けられている。この炉内ガス吸引筒６
は図３に示すように断面四角形の金属製の筒体からなる
もので、その台板３上に面する内側の側面のみに多数の
吸引孔７が透設されている。炉内ガス吸引筒６は炉体１
の天井から吊り下げられたもので、その上部に吸引ファ
ン８が設けられている。吸引ファン８は遠心ファンであ
り、炉内ガス吸引筒６の内部から吸引した炉内ガスを矢
印のように炉室内に遠心方向に流す機能を有するもので
ある。An in-furnace gas suction cylinder 6 is provided at the center of the two rows of the base plates 3 and 3. This furnace gas suction cylinder 6
As shown in FIG. 3, the cylinder is made of a metal cylinder having a quadrangular cross section, and a large number of suction holes 7 are provided only on the inner side surface facing the base plate 3. The furnace gas suction cylinder 6 is the furnace body 1
It is hung from the ceiling, and a suction fan 8 is provided above it. The suction fan 8 is a centrifugal fan and has a function of flowing the in- furnace gas sucked from the inside of the in-furnace gas suction cylinder 6 into the furnace chamber in the centrifugal direction as shown by an arrow.
【０００９】また図２に示すように、各吸引ファン８の
前方上部には排気ダクト９が設けられており、排気ファ
ン11を介して予熱帯の炉内ガスの一部を炉外に排出して
いる。更に図１に示すように炉床板２の下部には炉内ガ
スの一部を排気するための排気室12が設けられており、
排気ファン13により排気を行っている。Further, as shown in FIG. 2, an exhaust duct 9 is provided in the upper front portion of each suction fan 8, and a part of the pre-tropical furnace gas is discharged to the outside of the furnace via the exhaust fan 11. ing. Further, as shown in FIG. 1, an exhaust chamber 12 for exhausting a part of the furnace gas is provided in the lower part of the hearth plate 2,
Exhaust is performed by the exhaust fan 13.
【００１０】このように構成された本発明の台板式プッ
シャー炉は、台板３上に匣鉢に収納した製品４を多段に
積載し、炉体１の入口に設けられたプッシャーにより台
板３を炉床板２に沿って炉体１内を進行させつつ、予熱
帯、焼成帯、冷却帯を順次経過させることは従来のもの
と同様である。しかし本発明の台板式プッシャー炉で
は、２列になって進行する台板３、３の中央部に被焼成
品に面する両側面のみに多数の吸引孔７を持つ炉内ガス
吸引筒６を設けてあるので、炉内ガスはこの炉内ガス吸
引筒６の吸引孔７に水平方向に吸引されたうえ、吸引フ
ァン８により炉室内に遠心方向に流される。このため、
従来のように製品の外側から炉内ガスを吹き付ける方式
よりも製品４の間に均一な流れを生起させることがで
き、炉内温度やバインダーガスの濃度の均一化を図るこ
とができる。特にこの構造は予熱帯の脱バインダーゾー
ンにおいて効果の大きいものである。In the bed plate type pusher furnace of the present invention thus constructed, the products 4 stored in the casket are stacked on the bed plate 3 in multiple stages, and the bed plate 3 is pushed by the pusher provided at the inlet of the furnace body 1. While advancing in the furnace body 1 along the hearth plate 2, the pre-tropical zone, the firing zone, and the cooling zone are sequentially passed in the same manner as the conventional one. However, in the bed plate type pusher furnace of the present invention, the baking is performed on the central portions of the bed plates 3 and 3 which are advanced in two rows.
Since the furnace gas suction pipe 6 having a plurality of suction holes 7 only on both sides facing the article is provided, furnace gas is sucked to the suction holes 7 of the furnace gas aspiration tube 6 horizontally rice planting , Suction
It is made to flow into the furnace chamber by the fan 8 in the centrifugal direction. For this reason,
A uniform flow can be generated between the products 4 as compared to the conventional method in which the gas in the furnace is blown from the outside of the product, and the temperature in the furnace and the concentration of the binder gas can be made uniform. In particular, this structure is highly effective in the prebinder debinding zone.
【００１１】また本発明の台板式プッシャー炉において
は、炉内ガス吸引筒６を炉体１の天井から吊り下げて設
けたので、炉体１を構成する耐火物と炉内ガス吸引筒６
を構成する金属との熱膨脹率の差が大きいにもかかわら
ず、炉内ガス吸引筒６がこの熱膨脹率の差によって歪む
ことが防止される。Further, in the bed plate type pusher furnace of the present invention, the in-furnace gas suction cylinder 6 is provided so as to be suspended from the ceiling of the furnace body 1. Therefore, the refractory material constituting the furnace body 1 and the in-furnace gas suction cylinder 6
Although the difference in the coefficient of thermal expansion from the metal constituting the is large, the in-furnace gas suction cylinder 6 is prevented from being distorted by the difference in the coefficient of thermal expansion.
【００１２】[0012]
【発明の効果】以上に説明したように、本発明の台板式
プッシャー炉は台板上の製品間に均一なガス流を生起さ
せることができ、炉内温度やバインダーガスの濃度の均
一化を図ることができるとともに、炉内ガス吸引筒を金
属製とした場合にも炉体との熱膨脹率の差によって歪む
ことがない。よって本発明は従来の問題点を解消した台
板式プッシャー炉として、産業の発展に寄与するところ
は極めて大きいものである。As described above, the bed plate type pusher furnace of the present invention can generate a uniform gas flow between the products on the bed plate, and can make the temperature in the furnace and the concentration of the binder gas uniform. In addition, even if the in-furnace gas suction cylinder is made of metal, it is not distorted due to the difference in coefficient of thermal expansion with the furnace body. Therefore, the present invention has a great contribution to industrial development as a bed plate type pusher furnace that solves the conventional problems.
【図１】本発明の実施例を示す炉幅方向の断面図であ
る。FIG. 1 is a sectional view in a furnace width direction showing an embodiment of the present invention.
【図２】本発明の実施例を示す炉長手方向の断面図であ
る。FIG. 2 is a sectional view in a furnace longitudinal direction showing an embodiment of the present invention.
【図３】炉内ガス吸引筒の斜視図である。FIG. 3 is a perspective view of a furnace gas suction cylinder.
【図４】従来の台板式プッシャー炉を示す断面図であ
る。FIG. 4 is a sectional view showing a conventional bed plate type pusher furnace.
１ 炉体 ３ 台板 ４ 製品 ６ 炉内ガス吸引筒 ７ 吸引孔 ８ 吸引ファン 1 furnace body 3 base plate 4 product 6 furnace gas suction cylinder 7 suction hole 8 suction fan
Claims (1)
行する炉体の予熱帯の２列の台板の中央部に、被焼成品
に面する両側面に多数の吸引孔を持つ炉内ガス吸引筒を
炉体の天井から吊り下げて一定間隔で取り付けるととも
に、この炉内ガス吸引筒の上部に、吸引した炉内ガスを
炉室内に遠心方向に流す吸引ファンを設けたことを特徴
とする台板式プッシャー炉。1. A in the central portion of the two rows of the base plate of the preheating zone of the furnace body of the baked products was loaded with base plate proceeds in two rows, the calcined product
Is attached at regular intervals a plurality furnace gas aspiration tube having a suction hole for hanging from the ceiling of the furnace body on both sides facing the top of the furnace gas aspiration tube, the aspirated furnace gas
A bed plate type pusher furnace characterized by having a suction fan that flows in the centrifugal direction in the furnace chamber .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4060094A JP2522877B2 (en) | 1992-03-17 | 1992-03-17 | Bed plate type pusher furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4060094A JP2522877B2 (en) | 1992-03-17 | 1992-03-17 | Bed plate type pusher furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05264171A JPH05264171A (en) | 1993-10-12 |
| JP2522877B2 true JP2522877B2 (en) | 1996-08-07 |
Family
ID=13132164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4060094A Expired - Lifetime JP2522877B2 (en) | 1992-03-17 | 1992-03-17 | Bed plate type pusher furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2522877B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6264942B2 (en) * | 2014-02-28 | 2018-01-24 | 株式会社村田製作所 | Degreasing furnace |
-
1992
- 1992-03-17 JP JP4060094A patent/JP2522877B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05264171A (en) | 1993-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960405 |