JP3316514B2 - Drain water drainage pump - Google Patents
Drain water drainage pumpInfo
- Publication number
- JP3316514B2 JP3316514B2 JP11406395A JP11406395A JP3316514B2 JP 3316514 B2 JP3316514 B2 JP 3316514B2 JP 11406395 A JP11406395 A JP 11406395A JP 11406395 A JP11406395 A JP 11406395A JP 3316514 B2 JP3316514 B2 JP 3316514B2
- Authority
- JP
- Japan
- Prior art keywords
- drain water
- drain
- impeller
- rotation
- 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.)
- Expired - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、空調機の室内ユニット
の熱交換器表面等で結露するドレンを機外に排水するた
めのドレン水排水ポンプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain water drain pump for draining dew on a heat exchanger surface of an indoor unit of an air conditioner.
【０００２】[0002]
【従来の技術】空調機の冷房運転時には、室内ユニット
の熱交換器の表面には空気の冷却により多量の結露を生
じるので、このドレンは機外に排水しなければならな
い。そのため、空調機の底部にドレンを収集するドレン
パンを設け、ここに排水ポンプを設けて適宜運転し、機
外、あるいは室外に排水しており、そのための排水ポン
プとして各種のものが用いられている。2. Description of the Related Art During the cooling operation of an air conditioner, a large amount of dew is formed on the surface of the heat exchanger of the indoor unit due to cooling of the air, and this drain must be drained outside the device. For this reason, a drain pan for collecting drain is provided at the bottom of the air conditioner, a drain pump is provided here and the drain pan is operated as appropriate, and the drain is drained outside the machine or outdoors, and various drain pumps are used for that purpose. .
【０００３】このようなドレン水排水ポンプとして、水
平円板の下方に先細の羽根を突設し、この羽根の回転面
に近似した内周面を有するポンプ本体内で回転すること
により、ポンプ本体の底部開口に接するドレンパンのド
レンを吸引し、羽根の遠心力でドレンを掻き回しつつ上
方中心部から供給される大気圧によってドレン水表面に
自由表面を形成させてドレン水の速度エネルギーを圧力
エネルギーに変換し、ポンプ本体の上方外周に形成した
排水口からドレン水を吐出する形式の排水ポンプが用い
られている。このドレン水排水ポンプは構造が簡単で安
価であり、確実な作動を行う特徴を有しており、広く用
いられている。[0003] As such a drain water drain pump, a tapered blade is protruded below a horizontal disk, and is rotated in a pump body having an inner peripheral surface approximating the rotating surface of the blade, thereby forming the pump body. The drain of the drain pan in contact with the bottom opening is sucked and the centrifugal force of the blade stirs the drain to form a free surface on the drain water surface by the atmospheric pressure supplied from the upper central part, and converts the velocity energy of the drain water into pressure energy A drain pump of a type that converts and discharges drain water from a drain port formed in an upper outer periphery of a pump body is used. This drain water drain pump has a simple structure, is inexpensive, has a feature of performing reliable operation, and is widely used.
【０００４】[0004]
【発明が解決しようとする課題】上記従来のドレン水排
水ポンプにおいては、高速回転する羽根によって掻き回
し、その遠心力によってドレン水に速度エネルギーを与
え、かつ中心部に大気圧を導入するためドレン水は、空
気と混合した状態で羽根によって掻き回されることとな
る。特に、このドレン水排水ポンプの始動時には、吸い
上げられる小量のドレン水に多量の空気が混合した状態
となり、ポンプ本体内部でドレン水が激しく掻き回され
ることで局部的な圧力降下を生じ、羽根外縁部付近にキ
ャビテーションを生起する。特に羽根の裏側に発生する
負圧によって生じる気泡は、ポンプ本体内のドレン水流
の大きな変動によって発生と崩壊を繰り返し、大きな騒
音と振動を生じるため、空調機の商品性を低下させる原
因となっていた。In the above-mentioned conventional drain water drain pump, the drain water is stirred by high-speed rotating blades, centrifugal force imparts speed energy to the drain water, and introduces atmospheric pressure into the center of the drain water. Will be stirred by the blades in a state of being mixed with air. In particular, when the drain water drain pump is started, a large amount of air is mixed with the small amount of drain water that is sucked up, and the drain water is stirred vigorously inside the pump body, causing a local pressure drop, Cavitation occurs near the outer edge of the blade. In particular, air bubbles generated by the negative pressure generated behind the blades repeatedly generate and collapse due to large fluctuations in the drain water flow in the pump body, generating loud noise and vibration, causing the air conditioner to become less productive. Was.
【０００５】したがって、本発明は、羽根の回転によっ
てドレン水を掻き回すとき、ドレン水との抵抗を減少さ
せて気泡の発生を減少させ、気泡の発生と崩壊に伴う騒
音や振動の発生を抑制するようにしたドレン水排水ポン
プを提供することを目的とする。Therefore, according to the present invention, when the drain water is agitated by the rotation of the blades, the resistance to the drain water is reduced to reduce the generation of air bubbles, thereby suppressing the generation of noise and vibration accompanying the generation and collapse of the air bubbles. It is an object of the present invention to provide a drain water drainage pump as described above.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記課題を解
決するため、下端にドレンパン内に位置する吸入口を設
け、上方側部に排出口を設けた略中空逆円錐形のポンプ
本体内に、ポンプ本体の内周面と間隙を有して回転する
略三角形の羽根を水平円板の下面に垂下してなるインペ
ラを回転自在に設けたドレン水排水ポンプにおいて、水
平円板の下面にインペラの回転方向に向けて上方に傾斜
し漸次薄くなるドレン水ガイド部を設けたことによりド
レン水排水ポンプを構成したものである。According to the present invention, there is provided a substantially hollow inverted conical pump body having a suction port located at a lower end thereof and a discharge port at an upper side thereof. In a drain water drain pump provided with an impeller rotatably provided with a substantially triangular blade rotating with a gap with the inner peripheral surface of the pump body on the lower surface of the horizontal disk, the lower surface of the horizontal disk A drain water drainage pump is configured by providing a drain water guide portion that is inclined upward in the direction of rotation of the impeller and becomes gradually thinner.
【０００７】[0007]
【作用】本発明は、上記のように構成したので、ポンプ
本体内でインペラを回転すると、ドレンパン内のドレン
水はポンプ本体の下端の吸入口から吸い込まれ、羽根で
掻き回されて遠心力によって速度エネルギーを付与さ
れ、上方の排水口から排出される。その際、羽根により
掻き回されるドレン水は、水平円板の下面に形成したド
レン水ガイド部によりガイドされ、羽根の表面に衝突す
るドレン水流が減少するので、気泡が激しく生起するの
を防止し、気泡の発生と崩壊による騒音と振動の発生を
減少する。Since the present invention is constructed as described above, when the impeller is rotated in the pump body, the drain water in the drain pan is sucked in from the suction port at the lower end of the pump body, is stirred by the blades, and is centrifuged. It is given velocity energy and is discharged from the upper drain. At this time, the drain water stirred by the blades is guided by the drain water guide formed on the lower surface of the horizontal disk, and the flow of the drain water colliding with the surface of the blades is reduced, thereby preventing vigorous generation of bubbles. And reduce the generation of noise and vibration due to the generation and collapse of bubbles.
【０００８】[0008]
【実施例】本発明の実施例を図面に沿って説明する。内
面が略中空逆円錐形のポンプ室１を備えるポンプ本体２
は、下端に吸入口３を有し、上方の側部に排出口４を備
え、排出口４には排出管５が連結している。ポンプ本体
２の上方開口部にはＯリング６を介して止めネジ７によ
り蓋体８を固定している。蓋体８の中央には水切り部９
を形成しており、水切り部９の上方中心部には開口１０
を備え、開口１０の下端部には、内面が下方に曲げられ
た水切り面部１１を備えている。An embodiment of the present invention will be described with reference to the drawings. Pump body 2 including a pump chamber 1 having an inner surface of a substantially hollow inverted conical shape
Has a suction port 3 at the lower end, a discharge port 4 on the upper side, and a discharge pipe 5 connected to the discharge port 4. A lid 8 is fixed to the upper opening of the pump body 2 via an O-ring 6 with a set screw 7. A drainer 9 is provided at the center of the lid 8.
An opening 10 is formed in the upper central portion of the draining portion 9.
At the lower end of the opening 10 is provided a draining surface 11 whose inner surface is bent downward.
【０００９】蓋体８の上面に突設した支柱１２にはモー
タ１３が固定され、モータ１３の回転軸１４は下方に突
出して蓋体８の開口１０を貫通し、後に詳述するインペ
ラ１３に固定され、モータ１３の駆動時には、回転軸１
４を介してインペラ１３はポンプ室１内で回転する。回
転軸１４の開口１０の上方には水切り板１５が固定さ
れ、ポンプの停止時に、排出口４から吸入口３への戻り
ドレン水がインペラの上方から回転軸１４の外周を伝わ
って上昇してくるのを、水切り板１５によりモータ内に
ドレン水が入ることを防止している。A motor 13 is fixed to a column 12 protruding from the upper surface of the lid 8, and a rotating shaft 14 of the motor 13 projects downward and penetrates through the opening 10 of the lid 8, and is connected to an impeller 13 described later in detail. When the motor 13 is driven, the rotating shaft 1 is fixed.
The impeller 13 rotates in the pump chamber 1 via 4. A drain plate 15 is fixed above the opening 10 of the rotating shaft 14, and when the pump is stopped, the return drain water from the discharge port 4 to the suction port 3 rises from above the impeller along the outer periphery of the rotating shaft 14 and rises. The draining plate 15 prevents the drain water from entering the motor.
【００１０】インペラ１３は、図２ないし図５に示すよ
うに、上端にモータの回転軸が圧入固定される軸芯２０
の上方から放射状に支持板２１が突出しており、支持板
２１の外周には、上面が水平面をなす水平円板２２を一
体的に設けられている。As shown in FIGS. 2 to 5, the impeller 13 has a shaft core 20 at the upper end of which a rotary shaft of a motor is press-fitted and fixed.
The support plate 21 protrudes radially from above, and a horizontal disk 22 whose upper surface forms a horizontal plane is integrally provided on the outer periphery of the support plate 21.
【００１１】水平円板２２の下面には、支持板２１の片
側の面と同一平面をなす垂直面２３が形成され、この垂
直面２３の裏面には、その垂直面２３の先端から隣接す
る垂直面２３の基部にかけて連続的に連なるガイド面２
４を形成している。このガイド面２４は、インペラ１３
がドレン水排水のために回転するとき、インペラの回転
方向に向かって上方へ傾斜するように形成され、それに
より、水平円板２２は４個の支持板２１の間において、
インペラの回転方向に向かって漸次薄くなるように形成
されている。On the lower surface of the horizontal disk 22, there is formed a vertical surface 23 coplanar with one surface of the support plate 21, and on the back surface of the vertical surface 23, a vertical surface adjacent to the front end of the vertical surface 23 is formed. Guide surface 2 continuously extending over the base of surface 23
4 are formed. This guide surface 24 is
Is formed to incline upward in the direction of rotation of the impeller when is rotated for drain water drainage, whereby the horizontal disk 22 is positioned between the four support plates 21.
It is formed so as to become gradually thinner in the rotation direction of the impeller.
【００１２】図２ないし図５に示すように、４枚の支持
板２１のうち対向する２枚の支持板は軸芯２０の下端を
超えて下方に延び、上方部分より鋭角の端縁を形成して
その下端において両支持板は一体化して１板の羽根２５
となっている。４枚の支持板のうち他の対向する２枚の
支持板は、前記支持板と同様に傾斜しつつ下方に延びる
が、軸芯２０の下端近傍で切られて軸芯の外周に連なっ
ている。その結果、垂直面２３の下縁２６は、軸芯２０
に近付くにつれて下方に傾斜しており、したがって、垂
直面２３の裏面に連なるガイド面２４も下縁２６と同様
に、軸芯２０に近付くにつれて下方に傾斜しており、こ
のガイド面２４の他側は、隣接する垂直面の基部におい
て水平状態で連なっているので、ガイド面２４は、上記
傾斜した部分と水平な部分との間を連なる連続面となっ
ている。As shown in FIGS. 2 to 5, two opposing support plates of the four support plates 21 extend downward beyond the lower end of the shaft core 20 and form a sharper edge than the upper portion. At the lower end, the two support plates are integrated into one blade 25.
It has become. The other two opposing support plates of the four support plates extend downward while being inclined in the same manner as the support plate, but are cut near the lower end of the shaft core 20 and continue to the outer periphery of the shaft core. . As a result, the lower edge 26 of the vertical surface 23 is
, And therefore, the guide surface 24 connected to the back surface of the vertical surface 23 is also inclined downward toward the axis 20 similarly to the lower edge 26, and the other side of the guide surface 24 is also inclined. Are connected in a horizontal state at the base of the adjacent vertical surface, so that the guide surface 24 is a continuous surface connecting the inclined portion and the horizontal portion.
【００１３】上記構成をなすインペラ１３がポンプ室１
内で回転する時、ポンプ室１の下端の吸入口３よりドレ
ンパン（図示しない）のドレン水が上方まで溜っている
と、そのドレンはインペラ１３の羽根２５の回転によっ
て掻き回され、遠心力を付与されてポンプ室１の逆円錐
形内面に沿って上昇する。この時、ポンプ室１内には、
蓋８の中心部上方の開口１０から大気圧が導入されるの
で、ポンプ室内のドレン水はその中心が略放物面をなす
自由表面が形成され、羽根によってドレン水に与えられ
た速度エネルギーはポンプ室内壁面を押圧する圧力エネ
ルギーに交換され、上方側面の排出口４から排出管５を
経て機外に排出される。[0013] The impeller 13 having the above structure is used for the pump chamber 1.
If the drain water of the drain pan (not shown) has accumulated up from the suction port 3 at the lower end of the pump chamber 1 when rotating inside the pump chamber 1, the drain is stirred by the rotation of the blade 25 of the impeller 13, and the centrifugal force is reduced. It is applied and rises along the inverted conical inner surface of the pump chamber 1. At this time, in the pump chamber 1,
Atmospheric pressure is introduced from the opening 10 above the center of the lid 8, so that the drain water in the pump chamber forms a free surface whose center forms a substantially paraboloid, and the velocity energy given to the drain water by the blade is It is exchanged for the pressure energy that presses the wall surface of the pump chamber, and is discharged from the upper side through the discharge port 4 to the outside through the discharge pipe 5.
【００１４】このとき、羽根２５によって掻き回される
ポンプ室内のドレン水は、水平円板２２の下面部分のド
レン水ガイド面２４によって円滑に掻き回される。その
ため、上記のようなガイド面を形成したガイド部を備え
ていない従来のものと比較し、羽根の表面へのドレン水
の衝突による気泡の発生が抑制され、気泡の崩壊による
騒音や振動の発生を減少することができる。At this time, the drain water in the pump chamber stirred by the blades 25 is smoothly stirred by the drain water guide surface 24 on the lower surface of the horizontal disk 22. As a result, compared to the conventional device that does not include the guide portion having the guide surface as described above, the generation of bubbles due to the collision of the drain water with the blade surface is suppressed, and the generation of noise and vibration due to the collapse of the bubbles is suppressed. Can be reduced.
【００１５】騒音を比較するために、電圧ＡＣ２００
Ｖ、６０Ｈｚの条件下で、モータを備えた図２に示すド
レン水排水ポンプを無響箱（ＡＲ−３３Ｈ、リオン株式
会社製）の中に設置し、マイクをスタータ上面より５０
ｃｍに位置させて騒音計（ＮＡ−２９、リオン株式会社
製）で、流量及び周波数の条件を変えて測定した。ま
た、従来品として、略三角形の羽根を水平円板の下面に
垂下してなるインペラを回転自在に設けたドレン水排水
ポンプを用いた。得られた測定結果は表１に示すとおり
である。To compare the noise, the voltage AC200
Under the conditions of V and 60 Hz, a drain water drain pump equipped with a motor as shown in FIG. 2 was installed in an anechoic box (AR-33H, manufactured by Rion Co., Ltd.), and the microphone was placed 50 mm from the top of the starter.
cm and measured with a sound level meter (NA-29, manufactured by Rion Co., Ltd.) while changing the flow rate and frequency conditions. Further, as a conventional product, a drain water drainage pump provided with an impeller rotatably provided with substantially triangular blades hanging from the lower surface of a horizontal disk is used. The obtained measurement results are as shown in Table 1.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１に示した結果より明らかなように、実
施例のドレン水排水ポンプは、測定した揚程、流量及び
周波数にわたって従来品に比べて騒音が小さくなった。As is evident from the results shown in Table 1, the drain water drainage pump of the embodiment has lower noise compared to the conventional product in the measured head, flow rate and frequency.
【００１８】なお、このガイド面２４は、図６（イ）に
その展開側面図を示すように、回転方向に直線状に傾斜
させ、ガイド面内縁Ｂから外縁Ａに向かって低く回転方
向垂直面で内縁と外縁が同一高さとなるように形成され
てもよく、図６（ロ）に示すように、インペラの回転方
向に向けて上方に曲線状に傾斜し薄くなるように、かつ
回転方向垂直面まで内縁Ｂと外縁Ａが同一高さとなるよ
うに形成されてもよい。また、図６（ハ）に示すよう
に、インペラの回転方向に向けて上方に曲線状に傾斜し
薄くなるように、かつ回転方向垂直面まで内縁Ｂと外縁
Ａが同一傾斜面となるように形成され、図６（ニ）に示
すように、インペラの回転方向に向けて上方に直線状に
傾斜し薄くなるように、かつ回転方向垂直面まで内縁Ｂ
と外縁Ａが同一傾斜面となるように形成されてもよい。
更に、図６（ホ）に示すように、インペラの回転方向に
向けて上方に直線状に急傾斜し次いでゆるやかな傾斜面
に形成され薄くなるように、かつ回転方向垂直面まで内
縁Ｂから外縁Ａに向かって同一傾斜面となるように形成
されてもよい。その他必要に応じて各種の傾斜面を選択
しても良い。The guide surface 24 is linearly inclined in the rotation direction as shown in a developed side view of FIG. 6A, and is gradually lowered from the inner edge B of the guide surface to the outer edge A in the rotation direction. 6B, the inner edge and the outer edge may be formed to have the same height. As shown in FIG. 6B, the inner edge and the outer edge are inclined upward in a curved shape toward the rotation direction of the impeller, become thinner, and are perpendicular to the rotation direction. The inner edge B and the outer edge A may be formed to have the same height up to the surface. Also, as shown in FIG. 6 (c), the inner edge B and the outer edge A are inclined so as to be inclined and thinner upward in the direction of rotation of the impeller in a curved manner, and that the inner edge B and the outer edge A have the same inclined surface up to a plane perpendicular to the rotation direction. As shown in FIG. 6 (d), the inner edge B is linearly inclined upward and thinner toward the rotation direction of the impeller, and the inner edge B extends to a plane perpendicular to the rotation direction.
And the outer edge A may be formed to have the same inclined surface.
Further, as shown in FIG. 6 (e), the inner edge B extends from the inner edge B to the outer edge up to a vertical surface in the rotation direction so as to be steeply and linearly inclined upward in the direction of rotation of the impeller, and then formed into a gentle slope. It may be formed to have the same inclined surface toward A. Other various inclined surfaces may be selected as needed.
【００１９】[0019]
【発明の効果】本発明は、上記のように構成し作用する
ので、ドレン水の排水に際し羽根の回転によってドレン
水を掻き回す時、ドレン水との抵抗を減少し、気泡の発
生を減少させ、その結果、特に起動時の騒音や振動を発
生することを抑制することができる。According to the present invention, since the present invention is constructed and operated as described above, when the drain water is stirred by rotating the blades when draining the drain water, the resistance to the drain water is reduced, and the generation of bubbles is reduced. As a result, it is possible to suppress generation of noise and vibration particularly at the time of startup.
【図１】本発明のドレン水排水ポンプの実施例の全体構
成を示す断面図である。FIG. 1 is a cross-sectional view showing an entire configuration of an embodiment of a drain water drainage pump according to the present invention.
【図２】本発明のドレン水排水ポンプに用いるインペラ
の下方から見た斜視図である。FIG. 2 is a perspective view of the impeller used in the drain water drain pump according to the present invention as viewed from below.
【図３】同正面図である。FIG. 3 is a front view of the same.
【図４】同側面図である。FIG. 4 is a side view of the same.
【図５】同下方部分の平面図である。FIG. 5 is a plan view of the lower part.
【図６】同ガイド面部分の展開側面図であり、（イ）は
第１実施例、（ロ）は第２実施例、（ハ）は第３実施
例、（ニ）は第４実施例、（ホ）は第５実施例を示す。FIG. 6 is a developed side view of the guide surface portion, wherein (a) is the first embodiment, (b) is the second embodiment, (c) is the third embodiment, and (d) is the fourth embodiment. (E) shows the fifth embodiment.
１ ポンプ室 ２ ポンプ本体 ３ 吸入口 ４ 排出口 ５ 排出管 ６ Ｏリング ７ 止めネジ ８ 蓋体 ９ 水切り部 １０ 開口 １１ 水切り面部 １２ 支柱 １３ モータ １４ 回転軸 １５ 水切り板 ２０ 軸芯 ２１ 支持板 ２２ 水平円板 ２３ 垂直面 ２４ ガイド面 ２５ 羽根 ２６ 下縁 DESCRIPTION OF SYMBOLS 1 Pump room 2 Pump main body 3 Inlet 4 Outlet 5 Outlet 6 O-ring 7 Set screw 8 Lid 9 Drain part 10 Opening 11 Drain surface part 12 Post 13 Motor 14 Rotating shaft 15 Drain plate 20 Shaft core 21 Support plate 22 Horizontal Disk 23 Vertical surface 24 Guide surface 25 Blade 26 Lower edge
フロントページの続き (56)参考文献 特開 昭61−104191（ＪＰ，Ａ) 実開 平６−83991（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F24F 1/00 361 F04D 1/14 F04D 11/00 G10K 11/16 F24F 1/02 371 Continuation of the front page (56) References JP-A-61-104191 (JP, A) JP-A-6-83991 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F24F 1 / 00 361 F04D 1/14 F04D 11/00 G10K 11/16 F24F 1/02 371
Claims (6)
設け、上方側部に排水口を設けた略中空逆円錐形のポン
プ本体内に、ポンプ本体の内周面と間隙を有して回転す
る略三角形の羽根を水平円板の下面に垂下してなるイン
ペラを回転自在に設けたドレン水排水ポンプにおいて、
水平円板の下面にインペラの回転方向に向けて上方に傾
斜し漸次薄くなるドレン水ガイド部を設けたことを特徴
とするドレン水排水ポンプ。1. A substantially hollow inverted conical pump body having a suction port located in a drain pan at a lower end thereof and a drain port on an upper side thereof, and having a gap with an inner peripheral surface of the pump body. In a drain water drain pump provided with an impeller rotatably provided with a substantially triangular blade hanging on the lower surface of a horizontal disk,
A drain water drain pump characterized in that a drain water guide portion which is inclined upward in the direction of rotation of the impeller and is gradually thinned is provided on the lower surface of the horizontal disk.
縁に向かって低く回転方向垂直面で内縁と外縁が同一高
さとなるように形成された請求項１記載のドレン水排水
ポンプ。2. The drain water drain pump according to claim 1, wherein the drain water guide portion is formed so that the inner edge and the outer edge are flush with each other on the vertical surface in the rotation direction, from the inner edge of the guide surface to the outer edge.
に向けて上方に直線状に傾斜し漸次薄くなるように形成
された請求項１また請求項２記載のドレン水排水ポン
プ。3. The drain water drain pump according to claim 1, wherein the drain water guide portion is formed so as to be linearly inclined upward in the rotation direction of the impeller and to become gradually thinner.
に向けて上方に曲線状に傾斜し漸次薄くなるように形成
された請求項１また請求項２記載のドレン水排水ポン
プ。4. The drain water drain pump according to claim 1, wherein the drain water guide portion is formed so as to be curved upward in the direction of rotation of the impeller and to become gradually thinner.
に向けて上方に曲線状に傾斜し薄くなるようにかつ回転
方向垂直面まで内縁と外縁が同一高さとなるように形成
された請求項１ないし請求項４のいずれかに記載のドレ
ン水排水ポンプ。5. The drain water guide portion is formed so as to be inclined in a curved shape upward in the direction of rotation of the impeller so as to be thin, and that the inner edge and the outer edge have the same height up to a plane perpendicular to the direction of rotation. A drain water drainage pump according to claim 4.
に向けて上方に直線状に急傾斜し次いでゆるやかな傾斜
面に形成され薄くなるように、かつ回転方向垂直面まで
内縁から外縁に向かって同一傾斜面となるように形成さ
れた請求項１ないし請求項３のいずれかに記載のドレン
水排水ポンプ。6. The drain water guide portion is linearly and steeply inclined upward in the direction of rotation of the impeller, and is formed on a gentle slope so as to be thin, and from the inner edge to the outer edge up to a vertical surface in the rotation direction. The drain water drain pump according to any one of claims 1 to 3, wherein the drain water drain pump is formed to have the same inclined surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11406395A JP3316514B2 (en) | 1995-04-17 | 1995-04-17 | Drain water drainage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11406395A JP3316514B2 (en) | 1995-04-17 | 1995-04-17 | Drain water drainage pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08285307A JPH08285307A (en) | 1996-11-01 |
| JP3316514B2 true JP3316514B2 (en) | 2002-08-19 |
Family
ID=14628111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11406395A Expired - Fee Related JP3316514B2 (en) | 1995-04-17 | 1995-04-17 | Drain water drainage pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3316514B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101133605B1 (en) * | 2009-09-25 | 2012-04-10 | 엘지전자 주식회사 | Drain pump for air conditioner |
| GB2551762B (en) * | 2016-06-29 | 2018-10-24 | Weir Minerals Europe Ltd | Slurry pump impeller |
| CN113488012A (en) * | 2021-07-16 | 2021-10-08 | 苏要勒图 | Road engineering construction noise reduction device matched with breaking hammer for use |
-
1995
- 1995-04-17 JP JP11406395A patent/JP3316514B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08285307A (en) | 1996-11-01 |
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|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
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