JPS6196385A - Method of ventilating drying furnace - Google Patents
Method of ventilating drying furnaceInfo
- Publication number
- JPS6196385A JPS6196385A JP21684084A JP21684084A JPS6196385A JP S6196385 A JPS6196385 A JP S6196385A JP 21684084 A JP21684084 A JP 21684084A JP 21684084 A JP21684084 A JP 21684084A JP S6196385 A JPS6196385 A JP S6196385A
- Authority
- JP
- Japan
- Prior art keywords
- air
- duct
- circulation
- drying
- combustion chamber
- 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
Links
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、例えば自動車塗装工程において用いられる
直燃式・熱風循環炉タイプの乾燥炉の換気方法に関する
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for ventilating a drying oven of the direct combustion type hot air circulation oven type used, for example, in an automobile painting process.
従来の技術
従来、この種の技術に関するものとして第２図に示され
るものがある（例えば「自動車工学全書１９巻自動車の
製造法」山海堂、（昭５５ 、４．２０ ） 。BACKGROUND OF THE INVENTION Conventionally, there is a technique related to this type of technology as shown in FIG. 2 (for example, "Complete Book of Automotive Engineering, Vol. 19, Automobile Manufacturing Methods", Sankaido, (1982, April 20)).
Ｐ ２０６ ）。P206).
すなわち、通常運転時には、乾燥室１内の空気は吸込み
ダクト２によシ循環ダクト３側に吸い込まれ、例えば都
市ガスを燃料とするガスバーナー４によシ加熱される。That is, during normal operation, air in the drying chamber 1 is sucked into the circulation duct 3 through the suction duct 2, and heated by a gas burner 4 using city gas as fuel, for example.
そして加熱された空気は循環ファン５によシ熱風となっ
て再び乾燥室１内の吹き出しダクト６から吹き出される
。Then, the heated air is turned into hot air by the circulation fan 5 and is again blown out from the blow-off duct 6 in the drying chamber 1.
一方、上記の乾燥炉を昼夜交替生産体制のもとで運転す
るような場合には、乾燥炉を一時的に停止させることが
ある。この停止時間中に万一ガスバーナー４よりガス漏
れがあると乾燥室１内まで充満し、交替後の着火運転時
に爆発を誘発するおそれがあるため、着火運転に先立っ
て事前換気（プリバージ）を行なう。On the other hand, when the above-mentioned drying oven is operated under a day and night shift production system, the drying oven may be temporarily stopped. If there is a gas leak from the gas burner 4 during this stop time, it may fill the drying chamber 1 and cause an explosion during the ignition operation after replacement, so pre-ventilation (pre-barge) should be carried out before the ignition operation. Let's do it.
つまり、第２図において循環ダクト３が排気ダクト７に
通じるようにダンパー８を切シ換えたのち、循環ファン
５を運転して乾燥室１内の体積の４〜６倍の空気を屋外
に排出して換気を行なう。In other words, in Figure 2, after switching the damper 8 so that the circulation duct 3 communicates with the exhaust duct 7, the circulation fan 5 is operated to exhaust air 4 to 6 times the volume of the drying chamber 1 to the outside. Ventilate the area.
賞、第２図中のＢは被乾燥物である自動車ボディ、９は
燃料取入口、１０は燃焼空気取入口、１１は燃焼用ファ
ン、１２はフィルターである。B in FIG. 2 is an automobile body which is an object to be dried, 9 is a fuel intake port, 10 is a combustion air intake port, 11 is a combustion fan, and 12 is a filter.
発明が解決しようとする問題点
着火運転に先立っての従来の事前換気は、前述したよう
に乾燥室内の暖まった空気を排出して換気する方式であ
るため、エネルギーロスが大きいほか、事前換気後は乾
燥室内の温度が著しく下がり、所定の温度に達するまで
に時間がかかる。Problems to be Solved by the Invention Conventional pre-ventilation prior to ignition operation is a method of exhausting warm air from the drying chamber for ventilation, as described above, which results in large energy loss. The temperature inside the drying chamber drops significantly, and it takes time to reach the desired temperature.
問題点を解決するための手段
本発明は、上記のようなエネルギー的１時間的なロスを
最小限におさえた事前換気方法を提供しようとするもの
である。Means for Solving the Problems The present invention seeks to provide a pre-ventilation method that minimizes the energy loss per hour as described above.
本発明は、乾燥炉全体の空気を換気するのではなく、ガ
スバーナーと循環ファンとを含む燃焼室のみを換気する
方法とする。よシ具体的には、燃焼室の上流側と下流側
とをそれぞれダンパーにより遮断し、このダンパーによ
って画成された燃焼室のみを換気する方法とする。The present invention provides a method of ventilating only the combustion chamber containing the gas burner and the circulation fan, rather than ventilating the entire drying oven. More specifically, the upstream side and the downstream side of the combustion chamber are respectively blocked off by dampers, and only the combustion chamber defined by the dampers is ventilated.
作用
したがって、ガス漏れ等の起こる可能性がある燃焼室の
みを換気することによって本来の事前換気の目的が達成
できることはもちろん、乾燥室そのものは換気されない
から温度低下やエネルギーロスを最小限にとどめること
ができる。Effect: Therefore, by ventilating only the combustion chamber where gas leakage may occur, the original purpose of pre-ventilation can be achieved, and since the drying room itself is not ventilated, temperature drops and energy loss can be kept to a minimum. I can do it.
実施例
第１図は本発明の一実施例を示す説明図で、第２図と同
一部分には同一符号を付しである。Embodiment FIG. 1 is an explanatory diagram showing an embodiment of the present invention, and the same parts as in FIG. 2 are given the same reference numerals.
同図に示すように、ガスバーナー４の上流側よシ分岐し
て屋外側に通じる吸気ダクト１３を設けるとともに、そ
の分岐部には、乾燥室１側から循環ダクト３への空気の
流通と、吸気ダクト１３から循環ダクト３への空気の流
通とを選択的に切シ換える第１のダンパー１４を設ける
。As shown in the figure, an intake duct 13 is provided which branches off from the upstream side of the gas burner 4 and leads to the outdoors, and at the branch part, air flows from the drying chamber 1 side to the circulation duct 3, A first damper 14 is provided to selectively switch the flow of air from the intake duct 13 to the circulation duct 3.
また、従来と同様に循環ファン５の下流側より分岐して
屋外側に通じる排気ダクト１７を設けるとともに、その
分岐部には循環ファン５側からフィ □ルター球側へ
の空気の流通と、循環ファン５側から排気ダクト１７側
への空気の流通とを選択的に切り換える第２のダンパー
１８とを設ける。In addition, as in the past, an exhaust duct 17 is provided that branches from the downstream side of the circulation fan 5 and leads to the outdoor side, and the branch part is provided with an exhaust duct 17 for air circulation from the circulation fan 5 side to the filter bulb side and for circulation. A second damper 18 is provided to selectively switch the flow of air from the fan 5 side to the exhaust duct 17 side.
ガスバーナー４の燃料としては、例えば都市ガスのよう
に比重が空気比重よシ小さい気体燃料を用いる。この場
合、各ダンパー１４．１８は、ガス漏れの可能性がある
ガスバーナー４よりも低い位置に設置するｅ１９は屋根
である。As the fuel for the gas burner 4, a gaseous fuel having a specific gravity smaller than that of air, such as city gas, is used. In this case, each damper 14, 18 is installed at a lower position than the gas burner 4 where there is a possibility of gas leakage e19 is the roof.
そして、事前換気に際しては、循環ダクト３が吸引ダク
ト１３および排気ダクト１７に通じるように各ダンパー
１４．１８を歯動操作したのち、循環７アン５を運転し
て行なう。これによυ、吸引ダクト１３から外気が導入
され、燃焼室２０、すなわちガスバーナー４と循環ファ
ン５とを含んで双方のダンパー１４．１８で画成された
領域２０の空気のみが換気される。この時の空気の流れ
を図中の破線矢印で示す。また、換気量としては燃焼室
容積の４〜６倍が望ましい。Pre-ventilation is performed by gearing the dampers 14 and 18 so that the circulation duct 3 communicates with the suction duct 13 and the exhaust duct 17, and then operating the circulation 7 and 5. As a result, outside air is introduced from the suction duct 13, and only the air in the combustion chamber 20, that is, the area 20 containing the gas burner 4 and the circulation fan 5 and defined by both dampers 14 and 18, is ventilated. . The air flow at this time is shown by the dashed arrow in the figure. Further, the ventilation amount is preferably 4 to 6 times the combustion chamber volume.
したがって、乾燥室１、および燃焼室２０を除く循環ダ
クト３内に滞留している空気は換気されないので、事前
換気による温度低下が小さく、また事前換気に要する時
間も短縮される。Therefore, the air remaining in the circulation duct 3 except for the drying chamber 1 and the combustion chamber 20 is not ventilated, so the temperature drop due to pre-ventilation is small and the time required for pre-ventilation is also shortened.
事前換気を行なったのち、各ダンパー１４．１８が吸引
ダクト１３および排気ダクト１７を遮断するように回動
操作し、ガスバーナー４を着火する。これにより、加熱
された空気は図中の実線矢印で示すように循環する。こ
の時、乾燥室１、および燃焼室２０を除く循環ダクト３
内は事前換気されていないので、乾燥室１内は速やかに
所定温度に達する。After pre-ventilation, each damper 14, 18 is rotated so as to block the suction duct 13 and the exhaust duct 17, and the gas burner 4 is ignited. As a result, the heated air circulates as shown by solid arrows in the figure. At this time, the circulation duct 3 excluding the drying chamber 1 and the combustion chamber 20
Since the inside of the drying room 1 is not pre-ventilated, the inside of the drying room 1 quickly reaches a predetermined temperature.
尚、バーナー停止時には、事前換気の場合と同様に、吸
引ダクト１３および排気ダクト１７がそれぞれ循環ダク
ト３に通じるように各ダンパー１４．１８を回動操作し
ておく。このようにしておくことによシ、万一ガスバー
ナー４よりガス漏れが発生して燃焼室２０内にガスが充
清したとしても、比重が空気比重よりも小さいガスは吸
引ダクト１３マたは排気ダク） １７から屋外に排出さ
れ、乾燥室１内に流入することがない。Incidentally, when the burner is stopped, the dampers 14 and 18 are rotated so that the suction duct 13 and the exhaust duct 17 each communicate with the circulation duct 3, as in the case of pre-ventilation. By doing this, even if a gas leak occurs from the gas burner 4 and the combustion chamber 20 is filled with gas, the gas whose specific gravity is lower than that of air will be removed from the suction duct 13 or The air is discharged outdoors from the exhaust duct (exhaust duct) 17 and does not flow into the drying chamber 1.
発明の効果
本発明によれば、燃焼室のみを事前換気する方法とした
ことによシ、排出される熱量すなわちエネルギーロスが
小さいほか、事前換気に要する時間を短縮できる。また
、乾燥室内は換気されないため、事前換気後や温度低下
が少なく、炉内が所定の温度に達するまでに要する時間
を短縮でき、同時に燃料の節約にも寄与できる。Effects of the Invention According to the present invention, since only the combustion chamber is pre-ventilated, the amount of heat emitted, that is, energy loss is small, and the time required for pre-ventilation can be shortened. Furthermore, since the drying chamber is not ventilated, there is less temperature drop after preliminary ventilation, reducing the time required for the inside of the furnace to reach a predetermined temperature, and at the same time contributing to fuel savings.
第１図は本発明の一実施例を示す説明図、第２図は従来
の換気方法を示す説明図である。
１・・・乾燥室、３・・・循環ダクト、４・・・ガスバ
ーナー、５・・・循環ファツ、 １３・・−吸引ダクト
、１４・・・第１のダンパー、１７争・・排気ダクト、
１８・・・拳第２のダンパー、２０・・拳燃焼室。FIG. 1 is an explanatory diagram showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a conventional ventilation method. 1... Drying room, 3... Circulation duct, 4... Gas burner, 5... Circulation fat, 13... - Suction duct, 14... First damper, 17... Exhaust duct ,
18...Fist second damper, 20...Fist combustion chamber.
Claims (1)
熱し、その加熱された空気を循環ダクトを通して乾燥室
に吹き出して循環するようにした乾燥炉において、着火
運転に先立つて、ガスバーナーおよび循環ファンとを含
んでなる燃焼室の上流側および下流側をそれぞれダンパ
ーによつて遮断し、このダンパーによつて画成された燃
焼室内の空気のみを換気することを特徴とする乾燥炉の
換気方法。(1) In a drying furnace in which the air inside the drying chamber is heated in a combustion chamber installed outside the drying chamber, and the heated air is blown into the drying chamber through a circulation duct and circulated, the gas A drying oven characterized in that the upstream and downstream sides of a combustion chamber including a burner and a circulation fan are each blocked by a damper, and only the air inside the combustion chamber defined by the damper is ventilated. ventilation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21684084A JPS6196385A (en) | 1984-10-16 | 1984-10-16 | Method of ventilating drying furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21684084A JPS6196385A (en) | 1984-10-16 | 1984-10-16 | Method of ventilating drying furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6196385A true JPS6196385A (en) | 1986-05-15 |
Family
ID=16694721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21684084A Pending JPS6196385A (en) | 1984-10-16 | 1984-10-16 | Method of ventilating drying furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6196385A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021175851A1 (en) * | 2020-03-04 | 2021-09-10 | Eisenmann Gmbh | Treatment system and treatment method for treating workpieces |
-
1984
- 1984-10-16 JP JP21684084A patent/JPS6196385A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021175851A1 (en) * | 2020-03-04 | 2021-09-10 | Eisenmann Gmbh | Treatment system and treatment method for treating workpieces |
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