JPS6216202Y2 - - Google Patents
Info
- Publication number
- JPS6216202Y2 JPS6216202Y2 JP19219582U JP19219582U JPS6216202Y2 JP S6216202 Y2 JPS6216202 Y2 JP S6216202Y2 JP 19219582 U JP19219582 U JP 19219582U JP 19219582 U JP19219582 U JP 19219582U JP S6216202 Y2 JPS6216202 Y2 JP S6216202Y2
- Authority
- JP
- Japan
- Prior art keywords
- compressed air
- thermal spray
- spray burner
- air amplifier
- muffler
- 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
- 239000007921 spray Substances 0.000 claims description 27
- 239000011358 absorbing material Substances 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 5
- 238000010285 flame spraying Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Landscapes
- Nozzles (AREA)
Description
【考案の詳細な説明】
本考案は粉体耐火材料を火炎溶射する際に、発
生する騒音を低減するための溶射バーナーの改良
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a thermal spray burner for reducing noise generated when flame spraying a powder refractory material.
近年、粉体耐火材料を燃料および酸素と共に溶
射バーナーより噴出せしめて、これを耐火ライニ
ングの表面に融着させて溶射膜を形成する火炎溶
射法が行なわれるようになつてきた。しかし、こ
の火炎溶射は火炎噴流の騒音が大きいことが欠点
であつた。 In recent years, flame spraying has come into use, in which a powdered refractory material is ejected from a thermal spray burner together with fuel and oxygen, and the material is fused to the surface of a refractory lining to form a sprayed film. However, the drawback of this flame spraying is that the flame jet is noisy.
そのため、従来から騒音防止対策として第１図
に示すごとく、溶射バーナー本体１１の先端に、
耐火性吸音材１３を内面に貼布したマフラー１２
を装着することが実施されていた。このマフラー
１２の内面に貼布した耐火性吸音材１３に、火炎
噴流の騒音を吸収させて、騒音を低減させようと
するものである。ところが、このマフラー１２で
は発生源（溶射バーナー：溶射能力約20Kg／時
間）から１〜２ｍで120〜130デシベル（dB）程
度の騒音が約10dB程度低くなるだけで大きな効
果が得られず、騒音低減に有効なマフラーが求め
られていた。 Therefore, as a noise prevention measure, as shown in FIG.
Muffler 12 with fire-resistant sound absorbing material 13 pasted on the inner surface
It was carried out to install. The fire-resistant sound-absorbing material 13 applied to the inner surface of the muffler 12 absorbs the noise of the flame jet, thereby reducing the noise. However, with this muffler 12, the noise of about 120 to 130 decibels (dB) at a distance of 1 to 2 meters from the source (thermal spray burner: thermal spraying capacity of about 20 kg/hour) is only reduced by about 10 dB, and no significant effect can be obtained. There was a need for a muffler that was effective in reducing this.
本考案はこのような問題を解決し、騒音の少な
い溶射バーナーを提供することを目的とする。 The present invention aims to solve these problems and provide a thermal spray burner with less noise.
本考案は溶射バーナー本体１１と、溶射バーナ
ー本体１１の外周に間隔を距ててほぼ同軸に配設
された圧縮空気増幅器１４と、溶射バーナー本体
１１の先端付近に位置する圧縮空気増幅器端部に
一体に連設されたマフラー１２と、圧縮空気増幅
器１４に圧縮空気を溶射バーナー本体先端方向に
噴射可能に結合した圧縮空気供給管１５とを備
え、圧縮空気増幅器の他端が開放されてなること
を特徴とする低騒音溶射バーナーに存する。 The present invention includes a thermal spray burner main body 11, a compressed air amplifier 14 disposed approximately coaxially with a distance from the outer circumference of the thermal spray burner main body 11, and an end portion of the compressed air amplifier located near the tip of the thermal spray burner main body 11. It is equipped with a muffler 12 that is connected in a continuous manner, and a compressed air supply pipe 15 that is connected to a compressed air amplifier 14 so as to be able to inject compressed air toward the tip of the thermal spray burner body, and the other end of the compressed air amplifier is open. A low-noise thermal spray burner with the following characteristics.
以下に本考案を図面にもとずいて詳細に説明す
る。第２図に示すごとく、溶射バーナー本体１１
の外周に風道２６をへだてて圧縮空気増幅器１４
を配設する。溶射バーナー本体の先端付近に位置
する圧縮空気増幅器端部には一体に連設されたマ
フラー１２が装備され、圧縮空気増幅器１４の他
端（後端）は開放口２７を備える。 The present invention will be explained in detail below based on the drawings. As shown in FIG. 2, the thermal spray burner body 11
The compressed air amplifier 14 is separated from the air passage 26 on the outer periphery of the compressed air amplifier 14.
Place. The compressed air amplifier end located near the tip of the thermal spray burner main body is equipped with an integrally connected muffler 12, and the other end (rear end) of the compressed air amplifier 14 is provided with an open port 27.
このように構成した溶射バーナー本体（以下單
に溶射バーナーという）１１を稼動して、溶射バ
ーナー１１先端より火炎を噴出する。それととも
に、圧縮空気増幅器１４に圧縮空気供給管１５よ
り圧縮空気を供給する。圧縮空気は輪形室２１内
に入り、輪形室２１内の圧縮空気増幅器壁２２に
多数のマフラー１２側に向けて斜めに開孔した斜
孔２３から噴出して、圧縮空気増幅器１４内周面
２４と溶射バーナー１１外周面２５の間隙からな
る風道２６を高速でマフラー１２側に流れる。圧
縮空気増幅器１４の後部開放端２７からは周囲の
大気が、高速の圧縮空気流が流れる風道２６内に
引き込まれ、風道２６内に大量の空気の流れが起
こる。この高速で流れる大量の空気流はマフラー
１２内面に貼布した耐火性吸音材１３に沿つて流
れ、溶射バーナー１１の火炎の高周波騒音（3000
〜4000Hz）を吸収し、拡散を防止する。 The thermal spray burner body 11 configured in this manner (hereinafter simply referred to as a thermal spray burner) is operated to eject a flame from the tip of the thermal spray burner 11. At the same time, compressed air is supplied to the compressed air amplifier 14 from the compressed air supply pipe 15. The compressed air enters the annular chamber 21 and is ejected from diagonal holes 23 that are diagonally opened in the compressed air amplifier wall 22 in the annular chamber 21 toward the multiple mufflers 12, and is ejected from the inner peripheral surface 24 of the compressed air amplifier 14. It flows at high speed toward the muffler 12 through a wind path 26 formed by a gap between the outer circumferential surface 25 of the thermal spray burner 11 and the outer circumferential surface 25 of the thermal spray burner 11 . From the rear open end 27 of the compressed air amplifier 14, the surrounding atmosphere is drawn into the air passage 26 through which the high velocity compressed air flow flows, creating a large volume of air flow within the air passage 26. This large amount of air flow flowing at high speed flows along the fire-resistant sound absorbing material 13 attached to the inner surface of the muffler 12, and the high-frequency noise of the flame of the thermal spray burner 11 (3000
~4000Hz) and prevents diffusion.
これを実施例で説明する。使用する溶射バーナ
ーの溶射能力が20Kg／時間で、粉体耐火材料とし
てアルミナ系シリカとアルミナの混合粉体を20
Kg／時間の割合いで供給し、これをC3H8−O2火
炎で溶射した。C3H8流速は10Nm3／時間、O2流
速は50Nm3／時間である。圧縮空気増幅器１４に
供給する空気圧は４Kg／cm3、空気量は1Nm3／
分、周囲大気より引き込む空気量は12Nm3／分で
ある。騒音発生源（溶射バーナー）より、２ｍの
位置で騒音を測定したところ、従来は約120dBあ
つた騒音が約80dBに低減した。なお、マフラー
内面に貼布した耐火性吸音材の寿命が、表面を大
量に流れる空気によつて冷却されるため大巾に延
びた。 This will be explained in an example. The thermal spray burner used has a thermal spraying capacity of 20 kg/hour, and a mixed powder of alumina-based silica and alumina is used as a powder refractory material.
Kg/hour and was sprayed with a C3H8-O2 flame . The C 3 H 8 flow rate is 10 Nm 3 /h and the O 2 flow rate is 50 Nm 3 /h. The air pressure supplied to the compressed air amplifier 14 is 4Kg/cm 3 , and the amount of air is 1Nm 3 /
The amount of air drawn in from the surrounding atmosphere per minute is 12Nm 3 /min. When measuring the noise at a distance of 2 meters from the noise source (thermal spray burner), the noise was reduced from about 120 dB to about 80 dB. Additionally, the lifespan of the fire-resistant sound-absorbing material affixed to the inside of the muffler has been significantly extended because it is cooled by the large amount of air flowing over the surface.
以上、本考案によれば、溶射中の騒音を大幅に
低減することができ、作業環境を改善することが
できた。 As described above, according to the present invention, noise during thermal spraying can be significantly reduced, and the working environment can be improved.
第１図は従来の溶射バーナーの側面断面図。第
２図は本考案による溶射バーナーの側面断面図。
図中、１１……溶射バーナー、１２……マフラ
ー、１３……耐火性吸音材、１４……圧縮空気増
幅器、１５……圧縮空気供給管、１６……取付ボ
ルト、２１……輪形室、２２……圧縮空気増幅器
壁、２４……圧縮空気増幅器内周面、２５……溶
射バーナー外周面、２６……風道、２７……後部
開放端。
FIG. 1 is a side sectional view of a conventional thermal spray burner. FIG. 2 is a side sectional view of the thermal spray burner according to the present invention. In the figure, 11... Thermal spray burner, 12... Muffler, 13... Fire-resistant sound absorbing material, 14... Compressed air amplifier, 15... Compressed air supply pipe, 16... Mounting bolt, 21... Annular chamber, 22 ... compressed air amplifier wall, 24 ... compressed air amplifier inner peripheral surface, 25 ... thermal spray burner outer peripheral surface, 26 ... air passage, 27 ... rear open end.
Claims (1)
１の外周に間隙を距ててほぼ同軸に配設された圧
縮空気増幅器１４と、溶射バーナー１１の先端付
近に位置する圧縮空気増幅器端部に一体に連設さ
れたマフラー１２と、圧縮空気増幅器１４に圧縮
空気を溶射バーナー先端方向に噴射可能に結合し
た圧縮空気供給管１５とを備え、圧縮空気増幅器
の他端が開放されてなることを特徴とする低騒音
溶射バーナー。 Thermal spray burner body 11 and the thermal spray burner body 1
1, a muffler 12 integrally connected to an end of the compressed air amplifier located near the tip of the thermal spray burner 11, and a compressed air amplifier 14 and a compressed air supply pipe 15 coupled to be able to inject compressed air toward the tip of the thermal spray burner, and the other end of the compressed air amplifier is open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19219582U JPS5997761U (en) | 1982-12-21 | 1982-12-21 | Low noise thermal spray burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19219582U JPS5997761U (en) | 1982-12-21 | 1982-12-21 | Low noise thermal spray burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5997761U JPS5997761U (en) | 1984-07-02 |
| JPS6216202Y2 true JPS6216202Y2 (en) | 1987-04-23 |
Family
ID=30413681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19219582U Granted JPS5997761U (en) | 1982-12-21 | 1982-12-21 | Low noise thermal spray burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5997761U (en) |
-
1982
- 1982-12-21 JP JP19219582U patent/JPS5997761U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5997761U (en) | 1984-07-02 |
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