JPH10231733A - Muffler for engine in fire pump - Google Patents
Muffler for engine in fire pumpInfo
- Publication number
- JPH10231733A JPH10231733A JP7433497A JP7433497A JPH10231733A JP H10231733 A JPH10231733 A JP H10231733A JP 7433497 A JP7433497 A JP 7433497A JP 7433497 A JP7433497 A JP 7433497A JP H10231733 A JPH10231733 A JP H10231733A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- noise
- intake port
- feather
- fire pump
- 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.)
- Granted
Links
Landscapes
- Exhaust Silencers (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、消音装置、更に詳
しくは消防ポンプの吸気口側にてエンジン駆動時におけ
る騒音を防止可能にしたエンジンの消音装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silencer, and more particularly, to a silencer for an engine capable of preventing noise when the engine is driven at an intake side of a fire pump.
【０００２】[0002]
【従来の技術】従来、消防ポンプの機種は各種あるが、
エンジン駆動時における騒音防止装置は存在していない
のが現状である。しかしながら、一般工場において使用
されている原動機には騒音発生部をカバーして防音装置
を施したり、或は工場の一隅に密室を構築して外部に騒
音による被害を与えないように工夫している。2. Description of the Related Art Conventionally, there are various types of fire pumps.
At present, there is no noise prevention device when the engine is driven. However, prime movers used in general factories are provided with soundproofing devices to cover the noise generator, or a closed room is built in one corner of the factory to prevent external damage from noise. .
【０００３】[0003]
【発明が解決しようとする課題】従来、消防ポンプのよ
うに緊急時における消火活動のみに使用する機体では、
機体設置位置と出火現場との間に距離があるので、その
間にホースを路面にひいて消火活動をする場合に、消防
ポンプが駆動する付近の住民はエンジンのうち、特に吸
気音の騒音が高いため、火災の現状報告等が聞きとれ
ず、被害前に準備をする時間がなく延焼による災害を招
くという問題点があった。Conventionally, in the case of an aircraft such as a fire pump which is used only for fire fighting in an emergency,
Because there is a distance between the aircraft installation location and the fire site, when firefighting is performed by pulling a hose on the road during that time, the residents near the fire pump are particularly loud in the engine, especially in the noise of the intake noise. For this reason, there was a problem that a fire status report was not heard, and there was no time to prepare for the damage before the damage, resulting in a fire spread disaster.
【０００４】そこで、本発明は、エンジンを駆動しても
エンジンの一部である吸気口の騒音が外部に洩れないよ
うに緩和させて円滑に駆動するエンジンの消音装置を提
供することを目的としており、換言すれば該装置に用い
られる部材は軽量で、容易に取付け可能であると共にエ
ンジンの駆動に障害を何等来たさない消防ポンプにおけ
るエンジンの消音装置を提供することを目的とするもの
である。SUMMARY OF THE INVENTION It is an object of the present invention to provide a noise reduction device for an engine which can be smoothly driven by reducing noise of an intake port which is a part of the engine even when the engine is driven. In other words, it is an object of the present invention to provide an engine silencer for a fire-fighting pump in which members used in the apparatus are lightweight, can be easily attached, and do not cause any obstacle to driving of the engine. is there.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明のうち請求項１記載の発明は、消防ポンプの
エンジン駆動時に吸気口側に騒音防止手段を備えたこと
を特徴とする。According to a first aspect of the present invention, there is provided a fire-fighting pump having a noise prevention means on an intake port side when the engine is driven. .
【０００６】ここで、騒音防止手段としては、キャブレ
タ（気化器）の空気の入口、すなわち吸気口の直前にお
いて空気を吸引して混合させるとき、エンジンの駆動音
以外に吸気口にて破烈音を発生するので、特にエンジン
駆動時にその吸気音を消去、少なくとも緩和させるため
の手段であり、具体的には、吸気口の破烈音の音波を吸
収或は障壁機能を有するような手段のすべてをいう。こ
のように形成すると、吸気口より発生する騒音は或る程
度消去され、吸気口の吸気力にも支障を来たすことな
く、しかもエンジンの駆動にも何等影響を与えることな
く作動する。Here, as noise prevention means, when air is sucked and mixed immediately before the air inlet of the carburetor (carburetor), that is, immediately before the air inlet, a burst sound is generated at the air inlet other than the driving sound of the engine. This is a means for eliminating, or at least mitigating, the intake sound, especially when the engine is driven.Specifically, all means that absorb or have a barrier function of the burst sound of the intake port Say. With this configuration, the noise generated from the intake port is eliminated to some extent, and the operation is performed without impairing the intake power of the intake port and without affecting the driving of the engine.
【０００７】請求項２記載の発明は、騒音防止手段を吸
気口の直前に設けると共に、その防止手段を羽毛部材と
して内枠内に形成したものである。According to a second aspect of the present invention, the noise prevention means is provided immediately before the intake port, and the noise prevention means is formed as a feather member in the inner frame.
【０００８】このように形成すると、消防ポンプ全体の
重量は変化することなく、羽毛の側面に形成された凸凹
形状が音を吸収し、又、吸気により羽毛が重合して羽毛
により多数の空気層を形成し、衝撃波の音波の障壁とな
り、外部への伝達を防止するものである。When formed in this manner, the weight of the entire fire pump does not change, the uneven shape formed on the side surfaces of the feather absorbs the sound, and the feather is polymerized by the intake air and a large number of air layers are formed by the feather. And serves as a barrier to the sound wave of the shock wave, preventing transmission to the outside.
【０００９】このように騒音防止手段は羽毛部材よりな
る羽毛層であるが、請求項３記載の発明のように、網目
状の容器内に羽毛を充填して吸気口の直前に固定可能と
することによって、容器の厚薄により羽毛層よりなる空
気層の消音力を調整することができる。As described above, the noise prevention means is a feather layer made of a feather member. As in the invention according to the third aspect, the mesh-like container is filled with feathers and can be fixed immediately before the air inlet. This makes it possible to adjust the muffling power of the air layer composed of the feather layer depending on the thickness of the container.
【００１０】この場合、網目状容器を中心として、その
網目状容器を内枠と押え用枠体にて挟着し、外枠にて包
被することにより羽毛部材を安定させ機能を向上させ
る。さらに、網目状容器を外枠の内面に沿わせて羽毛層
を形成することも可能である。In this case, the mesh-shaped container is sandwiched between the inner frame and the holding frame around the mesh-shaped container, and the outer container is covered with the mesh-shaped container, thereby stabilizing the feather member and improving the function. Furthermore, it is also possible to form a feather layer along the inner surface of the outer frame with the mesh-like container.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態の一例
を図面に基づいて説明する。An embodiment of the present invention will be described below with reference to the drawings.
【００１２】各図面において、図１は本発明消音装置の
分解状態を示す斜視図、図２は消音装置の集合状態の縦
断面図、図３は消音装置を取付けた気化器の一部切欠斜
視図、図４は消音装置を取付けた消防ポンプの正面図で
ある。In each of the drawings, FIG. 1 is a perspective view showing an exploded state of the silencer of the present invention, FIG. 2 is a longitudinal sectional view of the assembled state of the silencer, and FIG. 3 is a partially cutaway perspective view of a vaporizer to which the silencer is attached. FIG. 4 is a front view of the fire pump to which the silencer is attached.
【００１３】図１において、消防ポンプの吸気口側に設
けた消音装置の全体を説明する。ここで図示した実施の
形態では、一般に使用されている消防ポンプに応用した
場合を示している。Referring to FIG. 1, the entire silencer provided on the suction port side of the fire pump will be described. The embodiment shown here shows a case where the present invention is applied to a generally used fire pump.
【００１４】ベース１は函状に形成されており、ベース
１の内部には突起２と気化器１０に ている。内枠４の材質は、金属、合成樹脂、繊維若しく
は綿糸等よりなり、強靭なものであることが好ましく、
網目状に形成されている。The base 1 is formed in a box shape, and a projection 2 and a vaporizer 10 are provided inside the base 1. ing. The material of the inner frame 4 is preferably made of metal, synthetic resin, fiber or cotton yarn, and is tough.
It is formed in a mesh shape.
【００１５】内枠４内には、網目状直方体の容器５内に
羽毛部材６を充填密封した羽毛層を押入して押え用枠体
７にて固定可能に挟着されるよう形成している。また前
記押え用枠体７と外枠９との間には網目状フィルター８
を介在させて図２に示すように吸気口３を有するベース
１内に内枠４、容器５、枠体７及びフィルター８を収納
し、図３に示すように外枠９にてカバーし、図４に示さ
れるようにこの消音装置を消防ポンプに取付けて使用す
る。In the inner frame 4, a feather layer filled with a feather member 6 and sealed therein is inserted into a mesh-shaped rectangular parallelepiped container 5 so as to be fixedly clamped by a holding frame 7. . A mesh filter 8 is provided between the holding frame 7 and the outer frame 9.
The inner frame 4, the container 5, the frame 7 and the filter 8 are housed in the base 1 having the air inlet 3 as shown in FIG. As shown in FIG. 4, this silencer is used by attaching it to a fire pump.
【００１６】本発明の実施の形態についてその作動状態
を説明する。まず、気化器１０に取付られている吸気口
３より吸引した空気は燃料と混合して燃料を気化せし
め、この混合気体はシリンダーに吸引される。この場合
燃料の噴霧口は開口し、常に噴霧口に働く燃料の圧力は
一定に保持されている。気化器１０の絞り弁を開くと空
気の流量が増大し、噴霧口の圧力降下は大きくなって、
燃料が空気流量に応じて多く流れる。これは、燃料の流
量と空気の流量の差異により発生するものと推考され
る。破烈書が吸気口３側に発生するので、その破烈音を
羽毛及び空気層により緩和し、外枠９内において音波の
干渉により外部に洩出を防止するものである。The operation of the embodiment of the present invention will be described. First, air sucked from the intake port 3 attached to the vaporizer 10 is mixed with fuel to vaporize the fuel, and this mixed gas is sucked into the cylinder. In this case, the fuel spray port is opened, and the pressure of the fuel acting on the spray port is always kept constant. When the throttle valve of the vaporizer 10 is opened, the flow rate of air increases, and the pressure drop at the spray port increases,
The fuel flows more according to the air flow rate. This is presumed to be caused by the difference between the fuel flow rate and the air flow rate. Since the bursting book is generated on the side of the intake port 3, the bursting sound is mitigated by the feathers and the air layer, and leakage to the outside is prevented by the interference of sound waves in the outer frame 9.
【００１７】[0017]
【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載されるような効果を奏する。Since the present invention is configured as described above, it has the following effects.
【００１８】気化器に取付けた吸気口の直前に網目状直
方体容器内に羽毛を充填して羽毛層を外枠内に設けるこ
とにより、羽毛層内の空気層にて吸気口より発生する騒
音を緩和し、消音効果を奏する。By filling feathers in a mesh-like rectangular parallelepiped container and providing the feather layer in the outer frame immediately before the air inlet attached to the vaporizer, noise generated from the air inlet in the feather layer is reduced. Relaxes and has a silencing effect.
【００１９】羽毛層の容器が軽量であるため消防ポンプ
の重量を増加させないという効果がある。Since the container of the feather layer is lightweight, there is an effect that the weight of the fire pump is not increased.
【００２０】羽毛層が定形化しているため取付け、取外
しが簡単に行われるという効果がある。Since the feather layer has a fixed shape, there is an effect that attachment and detachment can be easily performed.
【００２１】さらに、羽毛層の容器を内枠と押え用枠体
にて挟着しているので、振動或いは音波による形態の変
化を来たさない。Further, since the container of the feather layer is sandwiched between the inner frame and the holding frame, the shape is not changed by vibration or sound waves.
【図１】消音装置の分解状態を示す斜視図である。FIG. 1 is a perspective view showing an exploded state of a muffler.
【図２】消音装置の集合状態の縦断面図である。FIG. 2 is a longitudinal sectional view of the muffler in an assembled state.
【図３】消音装置を取付けた気化器の一部切欠斜視図で
ある。FIG. 3 is a partially cutaway perspective view of a vaporizer to which a silencer is attached.
【図４】消音装置を取付けた消防ポンプの正面図であ
る。FIG. 4 is a front view of the fire pump to which the silencer is attached.
１ ベース ２ 突起 ３ 吸気口 ４ 内枠 ５ 容器 ６ 羽毛部材 ７ 押え用枠体 ８ フィルター ９ 外枠 １０ 気化器 DESCRIPTION OF SYMBOLS 1 Base 2 Projection 3 Inlet 4 Inner frame 5 Container 6 Feather member 7 Holding frame 8 Filter 9 Outer frame 10 Vaporizer
Claims (3)
の騒音防止手段を備えたことを特徴とする消防ポンプに
おけるエンジンの消音装置。1. A noise suppression device for an engine in a fire pump, comprising: a noise prevention means for driving the engine on an intake port side of the fire pump.
設けた羽毛部材にしたことを特徴とする請求項１記載の
消防ポンプにおけるエンジンの消音装置。2. The engine noise reduction device in a fire pump according to claim 1, wherein the noise prevention means is a feather member provided between the inner frames immediately before the intake port.
を内枠内にて固定可能にし、外枠にて包被したことを特
徴とする請求項２記載の消防ポンプにおけるエンジンの
消音装置。3. The noise reduction of an engine in a fire pump according to claim 2, wherein the feather member is filled in a mesh container, which can be fixed in the inner frame, and is covered by the outer frame. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09074334A JP3125095B2 (en) | 1997-02-18 | 1997-02-18 | Engine silencer for fire pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09074334A JP3125095B2 (en) | 1997-02-18 | 1997-02-18 | Engine silencer for fire pumps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10231733A true JPH10231733A (en) | 1998-09-02 |
| JP3125095B2 JP3125095B2 (en) | 2001-01-15 |
Family
ID=13544129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09074334A Expired - Fee Related JP3125095B2 (en) | 1997-02-18 | 1997-02-18 | Engine silencer for fire pumps |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3125095B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19927254B4 (en) * | 1999-01-27 | 2004-09-16 | Mitsubishi Denki K.K. | Device for detecting the state of combustion in an internal combustion engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102135890B1 (en) * | 2018-10-15 | 2020-07-21 | 넥센타이어 주식회사 | Tire and method of manufacturing tire |
-
1997
- 1997-02-18 JP JP09074334A patent/JP3125095B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19927254B4 (en) * | 1999-01-27 | 2004-09-16 | Mitsubishi Denki K.K. | Device for detecting the state of combustion in an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3125095B2 (en) | 2001-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |