JPS635585B2 - - Google Patents
Info
- Publication number
- JPS635585B2 JPS635585B2 JP59226793A JP22679384A JPS635585B2 JP S635585 B2 JPS635585 B2 JP S635585B2 JP 59226793 A JP59226793 A JP 59226793A JP 22679384 A JP22679384 A JP 22679384A JP S635585 B2 JPS635585 B2 JP S635585B2
- Authority
- JP
- Japan
- Prior art keywords
- intake
- demister
- louver
- air flow
- heated gas
- 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
Links
- 230000002528 anti-freeze Effects 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 description 8
- 238000007710 freezing Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10268—Heating, cooling or thermal insulating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
- F02M31/06—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air
- F02M31/08—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air the gases being exhaust gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Separating Particles In Gases By Inertia (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、船舶等におけるエンジンの吸気ダク
トに用いられる吸気デミスターの凍結防止装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an antifreeze device for an intake demister used in an intake duct of an engine in a ship or the like.
舶用エンジンの吸気ダクト内の微細な水滴を除
去するため、一般に、吸気デミスターが設けられ
るが、気温が低下すると、水滴が吸気デミスター
において凍結し、吸気が満足に行なわれない場合
がある。
An intake demister is generally provided to remove minute water droplets in the intake duct of a marine engine, but when the temperature drops, the water droplets may freeze in the intake demister, resulting in insufficient air intake.
そこで、従来より、吸気デミスターには第２図
に示すような凍結防止装置がそなえられている。 Therefore, intake demisters have conventionally been equipped with antifreeze devices as shown in FIG. 2.
この従来の吸気デミスター凍結防止装置では、
吸気ダクト７内において、吸気デミスター１の上
流側に加熱ガス噴出管２が複数本（第２図では３
本）鉛直方向に配列され、同噴出管２に等間隔に
形成される噴出孔５から左右水平方向に加熱ガス
６を噴出するようになつている。さらに、加熱ガ
ス噴出管２の上流側における吸気ダクト７の吸気
取入口には、波浪が浸入するのを防止するため
に、多数の並列板からなるルーバー３が下流方向
へ昇傾斜して設置されている。 In this conventional intake demister antifreeze device,
In the intake duct 7, there are a plurality of heated gas ejection pipes 2 (three in FIG. 2) upstream of the intake demister 1.
The heating gas 6 is ejected in the left and right horizontal directions from the ejection holes 5 arranged in the vertical direction and formed at equal intervals in the ejection pipe 2. Furthermore, in order to prevent waves from entering, a louver 3 made of a large number of parallel plates is installed at the intake port of the intake duct 7 on the upstream side of the heated gas jet pipe 2 so as to be tilted upward in the downstream direction. ing.
したがつて、吸気取入口からルーバー３を介し
吸気ダクト７内に入る吸気流は、加熱ガス噴出管
２の噴出孔５から噴出される加熱ガス６により暖
められる。このようにして、暖められた吸気流に
より、吸気デミスター１において吸気流中の微細
な水滴が凍結するのを防止している。 Therefore, the intake air flow entering the intake duct 7 from the intake port via the louver 3 is warmed by the heated gas 6 ejected from the ejection hole 5 of the heated gas ejection pipe 2 . In this way, the warmed intake air flow prevents minute water droplets in the intake air flow from freezing in the intake demister 1.
なお、第２図中において吸気デミスター１およ
び噴出孔５はその一部のみ示されている。 In addition, in FIG. 2, only a part of the intake demister 1 and the jet hole 5 are shown.
ところで、上述のような従来の吸気デミスター
凍結防止装置では、波浪の浸入を防止すべく設置
されているルーバー３が下流方向へ昇傾斜してい
るため、吸気ダクト７内の吸気流は、斜め上向き
の速度を与えられることになり、第２図中に矢印
および一点鎖線で示すような上下方向の速度分布
を有する。すなわち、吸気ダクト７上部の吸気流
は下部の吸気流に比べて極端に速度が大きくな
る。
By the way, in the conventional intake demister freezing prevention device as described above, the louver 3 installed to prevent the intrusion of waves is inclined upward in the downstream direction, so the intake air flow in the intake duct 7 is directed diagonally upward. It has a velocity distribution in the vertical direction as shown by the arrow and the dashed line in FIG. That is, the speed of the intake air flow in the upper part of the intake duct 7 is extremely higher than that in the lower part.
この結果、上部の吸気流は、下部の吸気流に比
べ、加熱ガスによつてあまり暖められず、その温
度が低下する。したがつて、凍結を防止すべく吸
気デミスター１全面の温度をある規定値以上にす
るために、上部の吸気流に適当な熱量を与えるよ
うにすると、下部の吸気流に余分な熱量を与える
ことになり、エンジン効率を低下させる要因とな
つている。 As a result, the upper intake air flow is less warmed by the heated gas than the lower intake air flow, and its temperature decreases. Therefore, if an appropriate amount of heat is given to the upper intake air flow in order to raise the temperature of the entire surface of the intake demister 1 to a certain specified value or higher in order to prevent freezing, an excess amount of heat will be given to the lower intake air flow. This is a factor that reduces engine efficiency.
本発明は、上述の問題点の解決をはかろうとす
るもので、加熱ガスと吸気流とを均一に混合させ
て、吸気デミスター全面の温度分布が均一になる
ようにした、吸気デミスター凍結防止装置を供給
することを目的とする。 The present invention attempts to solve the above-mentioned problems, and is an intake demister anti-freezing device that uniformly mixes heated gas and intake air flow so that the temperature distribution over the entire surface of the intake demister becomes uniform. The purpose is to provide.
このため本発明の吸気デミスター凍結防止装置
は、エンジンの吸気ダクトに設けられるデミスタ
ーの上流側において、下流方向へ昇傾斜した多数
の並列板からなるルーバーをそなえるとともに、
同ルーバーよりも下流側に鉛直方向の加熱ガス噴
出管をそなえ、上記のルーバーと加熱ガス噴出管
との間に、吸気流に平行で且つ水平方向の板面を
有する整流板が設けられたことを特徴としてい
る。
For this reason, the intake demister antifreeze device of the present invention is provided with a louver consisting of a large number of parallel plates tilted upward in the downstream direction on the upstream side of the demister provided in the intake duct of the engine.
A vertical heated gas ejection pipe is provided on the downstream side of the louver, and a rectifying plate having a horizontal plate surface parallel to the intake flow is provided between the louver and the heated gas ejection pipe. It is characterized by
上述の本発明の吸気デミスター凍結防止装置で
は、上記整流板によつて斜め上向きの速度を有す
る吸気流が整流され、吸気ダクト中における吸気
流の速度分布が上下方向に一様になるので、加熱
ガスと吸気流とが均一に混合され、吸気流の温度
分布が均一になる。
In the above-mentioned intake demister anti-freezing device of the present invention, the intake air flow having an obliquely upward velocity is rectified by the above-mentioned straightening plate, and the velocity distribution of the intake air flow in the intake duct becomes uniform in the vertical direction, so that heating is prevented. The gas and the intake flow are evenly mixed, and the temperature distribution of the intake flow is uniform.
以下、図面により本発明の一実施例としての吸
気デミスター凍結防止装置について説明すると、
第１図はその斜視図であり、吸気ダクト７内にお
いて、吸気デミスター１の上流側に加熱ガス噴出
管２が複数本（本実施例では３本）鉛直方向に配
列され、同噴出管２に等間隔に形成される噴出孔
５から左右水平方向に加熱ガス６を噴出するよう
になつている。さらに、加熱ガス噴出管２の上流
側における吸気ダクト７の吸気取入口には、波浪
が浸入するのを防止するために、多数の並列板か
らなるルーバー３が下流方向へ昇傾斜して設置さ
れている。
Hereinafter, an intake demister antifreeze device as an embodiment of the present invention will be explained with reference to the drawings.
FIG. 1 is a perspective view of the same. In the intake duct 7, a plurality of heated gas ejection pipes 2 (three in this embodiment) are vertically arranged on the upstream side of the intake demister 1. Heating gas 6 is ejected in the left and right horizontal directions from ejection holes 5 formed at equal intervals. Furthermore, in order to prevent waves from entering, a louver 3 made of a large number of parallel plates is installed at the intake port of the intake duct 7 on the upstream side of the heated gas jet pipe 2 so as to be tilted upward in the downstream direction. ing.
また、ルーバー３と加熱ガス噴出管２との間に
は、吸気流に対し平行で且つ水平方向の板面を有
する多数の整流板４が、それぞれルーバー３の下
流側端部に取り付けられて設けられている。 Further, between the louver 3 and the heated gas ejection pipe 2, a large number of rectifying plates 4 having plate surfaces parallel to the intake air flow and in a horizontal direction are provided, each attached to the downstream end of the louver 3. It is being
なお、第１図中において吸気デミスター１およ
び噴出孔５はその一部のみ示されている。 In addition, in FIG. 1, only a part of the intake demister 1 and the jet hole 5 are shown.
本発明の吸気デミスター凍結防止装置は上述の
ごとく構成されているので、ルーバー３を通過し
た吸気流は、吸気ダクト７に流入する際、斜め上
向きの速度を与えられるが、ルーバー３の下流側
に設置された水平な板面を持つ整流板４によつ
て、第１図中に矢印および一点鎖線で示すような
上下方向に一様の速度分布を有する流れに整流さ
れる。 Since the intake demister antifreeze device of the present invention is configured as described above, the intake air flow passing through the louver 3 is given an obliquely upward velocity when flowing into the intake duct 7, but the air flow on the downstream side of the louver 3 is By the installed rectifying plate 4 having a horizontal plate surface, the flow is rectified into a flow having a uniform velocity distribution in the vertical direction as shown by arrows and dashed lines in FIG.
したがつて、吸気流は、加熱ガス噴出管２から
噴出される加熱ガス６と一様に混合され、吸気ダ
クト７の上部と下部とにおける吸気流の温度を均
一にすることができる。これにより、吸気デミス
ター１全面の温度分布が均一になる。 Therefore, the intake air flow is uniformly mixed with the heated gas 6 ejected from the heated gas ejection pipe 2, and the temperature of the intake air flow in the upper and lower parts of the intake duct 7 can be made uniform. This makes the temperature distribution over the entire surface of the intake demister 1 uniform.
このようにして、吸気ダクト７内の吸気流の温
度を均一に暖め、吸気デミスター１における凍結
を防止することにより、吸気流に余分な熱量を与
えることがなくなるので、加熱ガス噴出量を減少
できるとともに、エンジン効率を改善することが
できる。 In this way, by uniformly warming the temperature of the intake air flow in the intake duct 7 and preventing freezing in the intake demister 1, it is possible to reduce the amount of heated gas jetted out since no extra heat is given to the intake air flow. At the same time, engine efficiency can be improved.
なお、整流板４は、ルーバー３に連続して設置
されるが、ルーバー３から離して設置してもよ
い。 Note that although the current plate 4 is installed continuously to the louver 3, it may be installed separately from the louver 3.
以上詳述したように、本発明の吸気デミスター
凍結防止装置によれば、エンジンの吸気ダクトに
設けられるデミスターの上流側において、下流方
向へ昇傾斜した多数の並列板からなるルーバーを
そなえるとともに、同ルーバーよりも下流側に鉛
直方向の加熱ガス噴出管をそなえ、上記のルーバ
ーと加熱ガス噴出管との間に、吸気流に平行で且
つ水平方向の板面を有する整流板が設けられると
いう極めて簡素な構成で、吸気流が、吸気ダクト
内において上下方向に一様な速度分布を有するよ
うになり、加熱ガスによつて均一に暖められるの
で、吸気流に余分な熱量を与える必要がなくな
り、加熱ガス噴出量を減少できるとともに、エン
ジン効率を大幅に改善できる利点がある。
As described in detail above, according to the intake demister antifreeze device of the present invention, a louver consisting of a large number of parallel plates tilted upward in the downstream direction is provided on the upstream side of the demister provided in the intake duct of the engine, and the same A very simple structure in which a vertical heating gas ejection pipe is provided on the downstream side of the louver, and a rectifying plate with a horizontal plate surface parallel to the intake air flow is provided between the louver and the heating gas ejection pipe. With this configuration, the intake air flow has a uniform velocity distribution in the vertical direction within the intake duct and is uniformly warmed by the heated gas, so there is no need to give extra heat to the intake air flow, and the heating This has the advantage of reducing the amount of gas ejected and significantly improving engine efficiency.
第１図は本発明の一実施例としての吸気デミス
ター凍結防止装置を示す斜視図であり、第２図は
従来の吸気デミスター凍結防止装置を示す斜視図
である。
１…吸気デミスター、２…加熱ガス噴出管、３
…ルーバー、４…整流板、５…噴出孔、６…加熱
ガス、７…吸気ダクト。
FIG. 1 is a perspective view showing an intake demister antifreeze device as an embodiment of the present invention, and FIG. 2 is a perspective view showing a conventional intake demister antifreeze device. 1...Intake demister, 2...Heating gas ejection pipe, 3
...louver, 4...straightening plate, 5...blowout hole, 6...heating gas, 7...intake duct.
Claims (1)
ーの上流側において、下流方向へ昇傾斜した多数
の並列板からなるルーバーをそなえるとともに、
同ルーバーよりも下流側に鉛直方向の加熱ガス噴
出管をそなえ、上記のルーバーと加熱ガス噴出管
との間に、吸気流に平行で且つ水平方向の板面を
有する整流板が設けられたことを特徴とする、吸
気デミスター凍結防止装置。1. On the upstream side of the demister installed in the intake duct of the engine, a louver consisting of a large number of parallel plates tilted upward in the downstream direction is provided, and
A vertical heated gas ejection pipe is provided on the downstream side of the louver, and a rectifying plate having a horizontal plate surface parallel to the intake flow is provided between the louver and the heated gas ejection pipe. An intake demister antifreeze device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59226793A JPS61106966A (en) | 1984-10-30 | 1984-10-30 | Freeze preventing device of intake air demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59226793A JPS61106966A (en) | 1984-10-30 | 1984-10-30 | Freeze preventing device of intake air demister |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61106966A JPS61106966A (en) | 1986-05-24 |
| JPS635585B2 true JPS635585B2 (en) | 1988-02-04 |
Family
ID=16850702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59226793A Granted JPS61106966A (en) | 1984-10-30 | 1984-10-30 | Freeze preventing device of intake air demister |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61106966A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128290A (en) * | 1988-11-08 | 1990-05-16 | Nec Off Syst Ltd | Input device |
| JPH07334758A (en) * | 1994-06-14 | 1995-12-22 | Nippon Denki Joho Service Kk | Pos register |
-
1984
- 1984-10-30 JP JP59226793A patent/JPS61106966A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02128290A (en) * | 1988-11-08 | 1990-05-16 | Nec Off Syst Ltd | Input device |
| JPH07334758A (en) * | 1994-06-14 | 1995-12-22 | Nippon Denki Joho Service Kk | Pos register |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61106966A (en) | 1986-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |