JP3030979B2 - Oil burner - Google Patents
Oil burnerInfo
- Publication number
- JP3030979B2 JP3030979B2 JP3264427A JP26442791A JP3030979B2 JP 3030979 B2 JP3030979 B2 JP 3030979B2 JP 3264427 A JP3264427 A JP 3264427A JP 26442791 A JP26442791 A JP 26442791A JP 3030979 B2 JP3030979 B2 JP 3030979B2
- Authority
- JP
- Japan
- Prior art keywords
- burner
- secondary air
- burner case
- combustion
- vaporizer
- 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
- 239000006200 vaporizer Substances 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000446 fuel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 102220488234 Uromodulin-like 1_F23D_mutation Human genes 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000003779 heat-resistant material Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、給湯機や暖房機などに
使用される石油を燃料とする燃焼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 combustion device using petroleum as a fuel, which is used for a water heater or a heater.
【０００２】[0002]
【従来の技術】従来この種の石油燃焼装置は図５、図６
に示すように、枠状に形成されたバーナケース１１と、
バーナケース１１に内装されて、上面に炎孔部１３が、
下面に吸入口１４として開放された逆Ｕ字状の複数のバ
ーナヘッド１５と、バーナヘッド間に配設された側端部
に２次空気吸入口１７が、上面に２次空気噴出孔１６が
設けられた角筒状の２次空気ポート１８と、１次空気取
入口７と、燃焼噴射ノズル１と、埋設されたヒータ２と
を有する気化器４と、バーナヘッド１５の吸入口１４と
気化器４の下端９とを連通せしめる有底箱状の混合室１
０で構成されていた。2. Description of the Related Art Conventionally, this type of oil combustion apparatus is shown in FIGS.
As shown in the figure, a burner case 11 formed in a frame shape,
Inside the burner case 11, a flame hole 13 is provided on the upper surface,
A plurality of inverted U-shaped burner heads 15 opened as suction ports 14 on the lower surface, a secondary air inlet 17 at a side end disposed between the burner heads, and a secondary air ejection hole 16 on the upper surface. A vaporizer 4 having a rectangular cylindrical secondary air port 18 provided, a primary air inlet 7, a combustion injection nozzle 1, and a buried heater 2, an inlet 14 of a burner head 15, and vaporization. Box-shaped mixing chamber 1 with a bottom that allows the lower end 9 of the vessel 4 to communicate with it.
0.
【０００３】上記構成において、ヒータ２に通電され、
所定の温度を温度検出器５で検出すると、ノズル１より
燃料が気化器４内に供給され気化ガスとなる。一方燃焼
用空気がノズル１周辺部より気化器４内に供給され、前
記気化ガスと混合され予混合ガスとなって気化器４下端
９から混合室１０を経由してバーナヘッド１５下部の吸
入口１４に入り炎孔部１３より噴出される。この予混合
ガスが炎孔部１３近傍に設けられた点火電極１９により
点火され、２次空気噴出孔１６からの２次空気流と混合
促進されバーナケース１１内の燃焼室で燃焼する。In the above configuration, the heater 2 is energized,
When a predetermined temperature is detected by the temperature detector 5, the fuel is supplied from the nozzle 1 into the vaporizer 4 and becomes a vaporized gas. On the other hand, combustion air is supplied from the periphery of the nozzle 1 into the carburetor 4 and mixed with the vaporized gas to become a premixed gas, from the lower end 9 of the carburetor 4 via the mixing chamber 10 to the suction port at the lower part of the burner head 15. 14 and is ejected from the flame hole 13. The premixed gas is ignited by an ignition electrode 19 provided in the vicinity of the flame hole portion 13, and is mixed with the secondary air flow from the secondary air ejection hole 16 to be burned in the combustion chamber in the burner case 11.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら上記のよ
うな構成では、バーナヘッドの炎孔部１３で燃焼が形成
され、２次空気と混合が促進されるものの、燃焼室とな
る枠状に形成されたバーナケース１１内での燃焼である
ため、高温の燃焼熱がバーナケース１１に輻射熱として
熱伝導する事となり、バーナケース１１の温度が非常に
高温になってしまうものである。However, in the above configuration, although combustion is formed in the flame hole portion 13 of the burner head and mixing with the secondary air is promoted, it is formed in a frame shape which becomes a combustion chamber. Since the combustion takes place in the burner case 11, high-temperature combustion heat is conducted as radiant heat to the burner case 11, and the temperature of the burner case 11 becomes extremely high.
【０００５】この事はバーナケースの材料が高い耐熱性
の材料が必要とするのみならず、給湯機等に用いた場
合、燃焼停止後に高温のバーナケース１１の熱容量が、
自然ドラフト作用により上昇し熱交換器２３内の水と熱
交換され、再燃焼、再使用を行った場合、設定湯温以上
の湯が出湯される、いわゆるオーバーシュートによる高
温後沸き現象が生じる。[0005] This means that not only does the burner case need to be made of a high heat-resistant material, but when it is used in a water heater or the like, the heat capacity of the high-temperature burner case 11 after combustion is stopped is reduced.
When the temperature rises due to the natural draft action and is exchanged with the water in the heat exchanger 23 to perform re-combustion and reuse, hot water having a temperature equal to or higher than the set hot water temperature is discharged.
【０００６】更には、バーナケースからの輻射熱により
送風ケースも高温となり、燃焼装置を搭載する機器内の
雰囲気温度が上昇する事となり、樹脂部品、制御器、モ
ータ等の機能部品の熱劣化に到る恐れもある。Furthermore, the radiant heat from the burner case also increases the temperature of the blower case, which increases the ambient temperature in the equipment in which the combustion device is mounted, and leads to thermal deterioration of functional parts such as resin parts, controllers, and motors. There is also a risk.
【０００７】本発明は、かかる従来の問題点を解消する
もので、燃焼炎からのバーナケースへの輻射熱を低減
し、バーナケースの熱劣化のみならず、燃焼装置搭載の
機器内の雰囲気温度低減、更にはオーバーシュートによ
る給湯機等の高温後沸きを防止する事を目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems by reducing radiant heat from a combustion flame to a burner case, not only thermal deterioration of the burner case, but also reduction of ambient temperature in a device equipped with a combustion device. It is another object of the present invention to prevent boiling after a high temperature of a water heater or the like due to overshoot.
【０００８】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するため、枠状に形成されたバーナケースと、このバー
ナケースの側面に連接して取り付けた気化器と、前記気
化器に連通するとともにバーナケースの外方に設けた２
次空気供給用の通風路に空気を送る送風機と、前記バー
ナケースの内側に設け、前記気化器と対向するバーナケ
ース側の一端部のみ無炎孔とし、かつ他の部分に炎孔を
有したバーナヘッドと、上面に２次空気噴出孔を有し、
前記通風路より供給される２次空気を噴出する２次空気
ポートとを備え、前記２次空気ポートは前記バーナヘッ
ドを挟むように配設するとともに、前記バーナケースと
接する側に２次空気ポートを配設し、前記通風路より供
給される２次空気によりバーナケースの温度上昇を抑え
るようにしている。 The present invention achieves the above object.
For this purpose, a burner case formed in a frame shape, a carburetor connected to a side surface of the burner case,
2 connected to the gasifier and outside the burner case.
A blower that sends air to a ventilation path for supplying the next air, and a blower provided inside the burner case, one end on the burner case side facing the vaporizer has no flame, and the other portion has a flame. comprises a burner head having a bore, a secondary air injection holes in the upper surface,
Secondary air that blows out secondary air supplied from the ventilation path
And the secondary air port is connected to the burner head.
And the burner case.
A secondary air port is provided on the side in contact with
Suppress the temperature rise of the burner case by the supplied secondary air
I am trying to.
【０００９】[0009]
【作用】本発明は、上記した構成によって、バーナヘッ
ドを挟むように２次空気ポートを配設し、バーナケース
と接する両端部には必ず前記２次空気ポートが配設され
るようにしているため、両端部の２次空気ポートから噴
出される２次空気は、バーナヘッドの炎孔部で形成され
る燃焼炎の混合促進に寄与するとともに、バーナケース
の垂直方向に沿って、燃焼炎との間にエアーカーテンを
形成し、バーナケース側面の遮熱効果にも寄与する。更
には気化器と対向するバーナケース側のバーナヘッドの
端部の一部分のみ無孔部とし燃焼炎を形成させないこと
により、燃焼炎の輻射熱による影響を抑えるとともに、
２次空気による冷却効果も加えてバーナケースの温度上
昇を防止することができるものである。According to the present invention, there is provided a burner head having the above structure.
A secondary air port is provided so as to sandwich the air outlet, and the secondary air port is always provided at both ends in contact with the burner case.
So that it is injected from the secondary air ports at both ends.
The discharged secondary air is formed at the burner head flame hole.
In addition to contributing to the promotion of mixing of the combustion flame, an air curtain is formed between the burner case and the combustion flame along the vertical direction of the burner case, thereby contributing to the heat shielding effect on the side surface of the burner case. Furthermore, by suppressing only the part of the end of the burner head on the burner case side facing the carburetor to be non-porous and not forming a combustion flame, the influence of the radiant heat of the combustion flame is suppressed,
The cooling effect of the secondary air can be added to prevent the temperature of the burner case from rising.
【００１０】[0010]
【実施例】以下、本発明の一実施例を図面にもとづいて
説明する。An embodiment of the present invention will be described below with reference to the drawings.
【００１１】図１、図２、図３、図４において、１は石
油を噴射するノズルでポンプ２にて圧送され、ヒータ３
を内蔵した気化器４で灯油が霧化される。５は気化器４
の温度検出器で、ヒータ３の通電、非通電をコントロー
ルする。６は気化器のふたで、上方にノズル１と１次空
気取入口７を有する。この気化器ふた６と気化器４とで
気化室８を形成する。９は気化器４の下端開口部、１０
は気化器下端開口部９と連通する有底箱状の混合室、１
１は箱状のバーナケースで、内部には上面に、バーナケ
ース１１側の一端部のみ無孔部１２とした炎孔部１３
が、下面に混合室１０と連通する吸入口１４として開放
された送Ｕ字状の複数のバーナヘッド１５を有し、２次
空気噴出孔１６を有する角状の一方の側端部に２次吸入
口１７を有する複数の２次空気ポート１８と交互に配設
し、バーナケース１１側の両端部のみ複数の２次空気ポ
ート１８が配設されている。1, 2, 3, and 4, reference numeral 1 denotes a nozzle for injecting oil, which is pressure-fed by a pump 2 and a heater 3.
The kerosene is atomized by the vaporizer 4 having the built-in. 5 is a vaporizer 4
Control the energization and non-energization of the heater 3 by the temperature detector. Reference numeral 6 denotes a lid of the vaporizer, which has a nozzle 1 and a primary air inlet 7 above. The vaporizer lid 6 and the vaporizer 4 form a vaporization chamber 8. 9 is an opening at the lower end of the vaporizer 4;
Is a bottomed box-shaped mixing chamber communicating with the lower end opening 9 of the vaporizer.
Reference numeral 1 denotes a box-shaped burner case.
Has a plurality of U-shaped burner heads 15 opened as suction ports 14 communicating with the mixing chamber 10 on the lower surface, and has a secondary air ejection hole 16 on one side of a horn. A plurality of secondary air ports 18 having intake ports 17 are alternately provided, and a plurality of secondary air ports 18 are provided only at both ends on the burner case 11 side.
【００１２】１９は点火器電極、２０は箱状のバーナケ
ース１１との間に送風路２１を形成する送風機２２と連
結された箱状の送風ケースである。Reference numeral 19 denotes an igniter electrode, and reference numeral 20 denotes a box-shaped blower case connected to a blower 22 which forms a blower passage 21 between the burner case 11 and the box-shaped burner case 11.
【００１３】上記構成において、動作を説明する。ヒー
タ１に通電され、気化器４が所定の温度に達し、温度検
出器５が所定の温度を検知すると、ヒータ２の通電を停
止すると共に、送風機２２から燃焼用空気が送風され、
ノズル１から燃料が噴出される。噴出された燃料は、気
化器４で気化され気化ガスとなり、気化室８内で１次空
気取入口７から燃焼用１次空気と混合されて予混合ガス
となり、気化器４下端開口部９から混合室１０を経由し
てバーナヘッド１５内に送られ炎孔部１３から噴出され
る。炎孔部１３より噴出された予混合ガスは、点火器電
極１９により点火され、２次空気ポート１８の一端の２
次空気吸入口１７より供給され、２次空気噴出孔１６か
らの２次空気流と混合がされ燃焼が促進され、バーナヘ
ッド内で燃焼炎が形成される。The operation of the above configuration will be described. When the heater 1 is energized, the vaporizer 4 reaches a predetermined temperature, and the temperature detector 5 detects the predetermined temperature, the heater 2 is de-energized and combustion air is blown from the blower 22,
Fuel is ejected from the nozzle 1. The ejected fuel is vaporized by the vaporizer 4 to become a vaporized gas, mixed with the primary air for combustion from the primary air inlet 7 in the vaporization chamber 8 and becomes a premixed gas, and from the lower end opening 9 of the vaporizer 4. It is sent into the burner head 15 via the mixing chamber 10 and is ejected from the flame hole 13. The premixed gas ejected from the flame hole 13 is ignited by an igniter electrode 19 and is connected to one end of a secondary air port 18.
The fuel is supplied from the secondary air inlet 17 and mixed with the secondary air flow from the secondary air outlet 16 to promote combustion and form a combustion flame in the burner head.
【００１４】この燃焼火炎の熱は通常約１０００℃位の
高温度に達するものであるが、混合促進する２次空気ポ
ート１８を、バーナケース１１に接する両端部のみ複数
の２次空気ポート１８として配設している事により、こ
の両端の２次空気ポート１８からの空気流は燃焼の混合
促進としてではなく、燃焼炎とバーナケース１１間のエ
アーカーテン形成の役目を果すこと、更には、バーナヘ
ッドの炎孔部１３も長手方向のバーナケース１１側の一
端も部分的に無孔部１２としている事により、バーナケ
ース１１が燃焼炎の輻射熱の受熱を大幅に低減でき、実
験で得られた特性では約３５０℃の温度に保つ事ができ
るものである。Although the heat of the combustion flame usually reaches a high temperature of about 1000 ° C., the secondary air ports 18 for promoting the mixing are formed as a plurality of secondary air ports 18 only at both ends contacting the burner case 11. With this arrangement, the air flow from the secondary air ports 18 at both ends does not serve to promote the mixing of combustion, but serves to form an air curtain between the combustion flame and the burner case 11. Since the flame hole 13 of the head and the one end on the side of the burner case 11 in the longitudinal direction are also partially non-porous 12, the burner case 11 can greatly reduce the heat received by the radiant heat of the combustion flame, which was obtained in an experiment. In terms of characteristics, it can be maintained at a temperature of about 350 ° C.
【００１５】本実施例では両端部に複数の２次空気ポー
ト１８を設けたが１個の２次空気ポート１８に燃焼用と
冷却用のポートをそれぞれ設けても同じ効果を奏するも
のである。In this embodiment, a plurality of secondary air ports 18 are provided at both ends. However, the same effect can be obtained by providing a single port for combustion and a port for cooling.
【００１６】[0016]
【発明の効果】以上のように本発明の石油燃焼装置によ
れば、次の効果が得られる。As described above, according to the petroleum combustion apparatus of the present invention, the following effects can be obtained.
【００１７】燃焼室を形成するバーナケースの温度が２
次空気ポートの最両端部からの空気流によりエアーカー
テンを形成する事と、バーナケース側のバーナヘッドの
一端部が部分的に無孔部で燃焼炎が形成されない事によ
り、バーナケースが燃焼炎による輻射熱の受熱を低減す
る事ができるため （１）バーナケースは高耐熱性の材料が不要で安価にで
きる。 （２）給湯機等に搭載して使用した時、燃焼停止後にバ
ーナケースが持つ熱容量が小さいため、オーバーシュー
トの発生が抑えられ、出湯水の後沸き現象が防止でき
る。 （３）バーナケースを介した送風ケースの温度上昇をも
防止できるため、機器として組込んだ時、樹脂部品、制
御器、モータ等の機能部品の雰囲気温度が上昇せず熱劣
化を防止できる。The temperature of the burner case forming the combustion chamber is 2
The airflow from the both ends of the next air port forms an air curtain, and one end of the burner head on the burner case side is partially non-porous so that no combustion flame is formed. (1) The burner case does not require a high heat-resistant material and can be inexpensive. (2) When mounted on a water heater or the like and used, the burner case has a small heat capacity after the combustion is stopped, so that the occurrence of overshoot is suppressed and the after-boiling phenomenon of tap water can be prevented. (3) Since the temperature rise of the blower case through the burner case can also be prevented, when incorporated as equipment, the ambient temperature of functional components such as a resin component, a controller, and a motor does not increase, thereby preventing thermal degradation.
【図１】本発明の一実施例の石油燃焼装置の要部平面断
面図FIG. 1 is a plan cross-sectional view of a main part of an oil combustion apparatus according to an embodiment of the present invention.
【図２】同要部正面断面図FIG. 2 is a front cross-sectional view of the main part.
【図３】同要部側面断面図FIG. 3 is a side sectional view of the main part.
【図４】本発明のバーナケース、バーナヘッド、２次空
気ポートの要部斜視図FIG. 4 is a perspective view of a main part of a burner case, a burner head, and a secondary air port according to the present invention.
【図５】従来例の石油燃焼装置の要部平面断面図FIG. 5 is a plan cross-sectional view of a main part of a conventional oil combustion device.
【図６】従来例の石油燃焼装置の要部正面断面図FIG. 6 is a front sectional view of a main part of a conventional oil combustion device.
１ ノズル ３ ヒータ ４ 気化器 ７ １次空気取入口 １０ 混合室 １１ バーナケース １２ 無孔部 １３ 炎孔部 １４ 吸入口 １５ バーナヘッド １６ ２次空気噴出孔 １７ ２次空気吸入口 １８ ２次空気ポート ２０ 送風ケース ２１ 送風路 ２２ 送風機 DESCRIPTION OF SYMBOLS 1 Nozzle 3 Heater 4 Vaporizer 7 Primary air intake 10 Mixing chamber 11 Burner case 12 Solid hole 13 Flame hole 14 Inlet 15 Burner head 16 Secondary air ejection hole 17 Secondary air intake 18 Secondary air port 20 blower case 21 blower path 22 blower
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−11208（ＪＰ，Ａ) 特開 平１−302007（ＪＰ，Ａ) 特開 平３−75405（ＪＰ，Ａ) 特開 平３−148509（ＪＰ，Ａ) 特開 平３−221710（ＪＰ，Ａ) 特開 平１−302009（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F23D 11/10 F23D 11/40 F24H 9/18 305 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-11208 (JP, A) JP-A-1-302007 (JP, A) JP-A-3-75405 (JP, A) 148509 (JP, A) JP-A-3-221710 (JP, A) JP-A-1-302009 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F23D 11/10 F23D 11 / 40 F24H 9/18 305
Claims (1)
ーナケースの側面に連接して取り付けた気化器と、前記
気化器に連通するとともにバーナケースの外方に設けた
２次空気供給用の通風路に空気を送る送風機と、前記バ
ーナケースの内側に設け、前記気化器と対向するバーナ
ケース側の一端部のみ無炎孔とし、かつ他の部分に炎孔
を有したバーナヘッドと、上面に２次空気噴出孔を有
し、前記通風路より供給される２次空気を噴出する２次
空気ポートとを備え、前記２次空気ポートは前記バーナ
ヘッドを挟むように配設するとともに、前記バーナケー
スと接する側に２次空気ポートを配設し、前記通風路よ
り供給される２次空気によりバーナケースの温度上昇を
抑えるようにした石油燃焼器。A burner case formed in a frame shape; a vaporizer connected to a side surface of the burner case ;
Connected to the vaporizer and provided outside the burner case
A blower for sending air to a ventilation path for supplying secondary air, and a blower provided inside the burner case, one end on the burner case side facing the vaporizer being a flameless hole, and comprises a burner head having a burner ports, the secondary air injection holes in the upper surface, 2 ejects secondary air supplied from the air passage primary
An air port, wherein the secondary air port is connected to the burner.
The head is sandwiched between the burner
A secondary air port is provided on the side that contacts
The burner case temperature rise by the secondary air supplied
An oil combustor that has been suppressed .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3264427A JP3030979B2 (en) | 1991-10-14 | 1991-10-14 | Oil burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3264427A JP3030979B2 (en) | 1991-10-14 | 1991-10-14 | Oil burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0599407A JPH0599407A (en) | 1993-04-20 |
| JP3030979B2 true JP3030979B2 (en) | 2000-04-10 |
Family
ID=17403033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3264427A Expired - Lifetime JP3030979B2 (en) | 1991-10-14 | 1991-10-14 | Oil burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3030979B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1604122A (en) * | 1977-04-08 | 1981-12-02 | Sony Corp | Dc motors |
| DE2730142C2 (en) * | 1977-07-04 | 1988-01-21 | Papst-Motoren GmbH & Co KG, 7742 St Georgen | Brushless DC motor of the two-strand design |
-
1991
- 1991-10-14 JP JP3264427A patent/JP3030979B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0599407A (en) | 1993-04-20 |
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