JP6091308B2 - Drainage pump - Google Patents

Drainage pump Download PDF

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Publication number
JP6091308B2
JP6091308B2 JP2013086830A JP2013086830A JP6091308B2 JP 6091308 B2 JP6091308 B2 JP 6091308B2 JP 2013086830 A JP2013086830 A JP 2013086830A JP 2013086830 A JP2013086830 A JP 2013086830A JP 6091308 B2 JP6091308 B2 JP 6091308B2
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diameter
blade
large radius
vanes
drainage pump
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JP2014211098A (en
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永 佐藤
永 佐藤
友也 加藤
友也 加藤
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Fujikoki Corp
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Fujikoki Corp
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Priority to JP2013086830A priority Critical patent/JP6091308B2/en
Priority to KR1020140027559A priority patent/KR102195428B1/en
Priority to CN201410155763.3A priority patent/CN104110400B/en
Publication of JP2014211098A publication Critical patent/JP2014211098A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

本発明は、特には空調機に装備される排水ポンプに関する。   The present invention particularly relates to a drainage pump installed in an air conditioner.

空調機の室内ユニットにおいては、冷房運転時に空気中の水分が凝縮して熱交換器に付着し、水滴が熱交換器の下方に設けられるドレンパン内に滴下する。このドレンパン内に溜まったドレン水を屋外に排水するために排水ポンプが室内ユニットに装備される。この排水ポンプの一例として、下端部に吸込口が設けられると共に側部に吐出口が設けられたハウジング内に回転羽根を回転自在に設け、ハウジングの上部開口にカバーを介して固定したモータにより回転羽根を回転させるものがある。モータを駆動して回転羽根を回転させると、ドレンパン内に貯留したドレン水は吸込口から吸い込まれ、ハウジング内面に沿って揚水され、ハウジングの吐出口から外部に吐出される。   In the indoor unit of the air conditioner, moisture in the air condenses and adheres to the heat exchanger during cooling operation, and water droplets drip into a drain pan provided below the heat exchanger. In order to drain the drain water accumulated in the drain pan to the outside, a drain pump is installed in the indoor unit. As an example of this drainage pump, a rotary blade is rotatably provided in a housing having a suction port at the lower end and a discharge port at the side, and is rotated by a motor fixed to the upper opening of the housing through a cover. Some rotate the blades. When the motor is driven to rotate the rotating blades, the drain water stored in the drain pan is sucked from the suction port, pumped up along the inner surface of the housing, and discharged from the discharge port of the housing to the outside.

特開平５−３１２１８７号公報JP-A-5-312187

空調機用の排水ポンプは遠心ポンプの一種であるが、揚程を大きくするために回転数を増加させると、強い乱流となってキャビテーションが発生し、騒音・振動が増加する。
このキャビテーションを防止するためには、羽根を曲面や斜面とする技術が知られており、特許文献１はこの技術を開示している。
しかし、特許文献１に示すような羽根形状では、回転羽根としての射出成型性に問題を生じ、射出成型時に肉厚が不均一となって回転バランスが悪くなり、騒音や振動の不具合の原因となる。
そこで、本発明の目的は、上述した不具合を解消する排水ポンプを提供することである。 A drainage pump for an air conditioner is a type of centrifugal pump. However, if the number of rotations is increased to increase the head, strong turbulence is generated, cavitation occurs, and noise and vibration increase.
In order to prevent this cavitation, a technique of making a blade a curved surface or an inclined surface is known, and Patent Document 1 discloses this technique.
However, in the blade shape as shown in Patent Document 1, there is a problem in the injection moldability as a rotary blade, the thickness becomes uneven at the time of injection molding, the rotation balance becomes worse, and the cause of noise and vibration problems Become.
Then, the objective of this invention is providing the drainage pump which eliminates the malfunction mentioned above.

本発明の排水ポンプは、基本的構成として、モータと、前記モータの出力軸に連結される回転羽根と、前記回転羽根を収容するハウジングとを有し、前記ハウジングは下部に設けられる吸込口及び側部に設けられる吐出口を備えている。 Drainage pump of the present invention, as a basic configuration, a motor, a rotary vane connected to an output shaft of the motor, and a housing for accommodating the rotation vane, wherein the housing inlet is provided in the lower part and A discharge port provided in the side portion is provided.

そして、前記回転羽根は、前記モータの出力軸に連結される軸部と、前記軸部から放射方向に延びる板状の大径羽根と、前記大径羽根の回転方向後側に形成される前記大径羽根と同様の厚さ寸法を有する複数の大径補助羽根と、前記大径羽根と連結される板状の小径羽根と、前記大径羽根の外周部を連結するリング部材と、前記リング部材の下端部に連結される中心側に設けられる円形の開口部を有する皿状部材とを備える。前記大径羽根に続く前記大径補助羽根は前記大径羽根に平行に配設されるとともに、上端は段々に低く形成される。
また、前記大径羽根と前記大径羽根に続く前記大径補助羽根は上面が直線に沿って削られる形状で段々に低く形成される。
また、前記大径羽根と前記大径羽根に続く前記大径補助羽根は上面が円弧に沿って削られる形状で段々に低く形成される。
また、前記大径羽根の上面のリーディングエッジは平坦面を有する。
また、前記大径羽根に続く前記大径補助羽根は２枚である。
また、前記大径羽根に続く前記大径補助羽根は１枚である。
また、前記大径羽根の複数枚は前記軸部から前記皿状部材の前記開口部の間で回転方向にオフセットされる傾斜部を有する。 Then, the rotary blade includes a shaft portion coupled to an output shaft of the motor, and the large radius vanes plate-like radially extending from the shaft portion, wherein are formed in the rotation direction rear side of the large radius vanes the a plurality of large-diameter auxiliary vanes having a similar thickness and a large radius vanes, wherein a plate-shaped small-diameter vane, which is connected to the large-radius vanes, and a ring member for connecting the outer peripheral portion of the large radius vanes, the ring A dish-like member having a circular opening provided on the center side connected to the lower end of the member. Wherein together with the large diameter support blade following the large radius vanes is disposed in parallel with the large radius vanes, the upper end is formed progressively lower.
The large-diameter blades and the large-diameter auxiliary blades following the large-diameter blades are formed to be gradually lower in a shape in which the upper surface is cut along a straight line.
The large-diameter blades and the large-diameter auxiliary blades following the large-diameter blades are formed to be gradually lower in a shape in which the upper surface is cut along an arc.
The leading edge of the upper surface of the large-diameter blade has a flat surface.
The large-diameter auxiliary blades following the large-diameter blade are two.
Moreover, the said large diameter auxiliary | assistant blade | wing following the said large diameter blade | wing is one sheet.
The plurality of large-diameter blades have inclined portions that are offset in the rotational direction from the shaft portion to the openings of the dish-shaped member.

本発明の一実施形態の排水ポンプの一部断面正面図である。It is a partial cross section front view of the drainage pump of one embodiment of the present invention. 同上排水ポンプの回転羽根を示し、（ａ）は斜視図、（ｂ）は平面図、（ｃ）は（ｂ）のＡ−Ａ断面図である。The rotary blade of a drainage pump same as the above is shown, (a) is a perspective view, (b) is a plan view, and (c) is an AA sectional view of (b). 本発明の排水ポンプの回転羽根の他の実施形態を示し、（ａ）は斜視図、（ｂ）は平面図、（ｃ）は（ｂ）のＡ−Ａ断面図である。The other embodiment of the rotary blade of the drainage pump of this invention is shown, (a) is a perspective view, (b) is a top view, (c) is AA sectional drawing of (b). 本発明の排水ポンプの回転羽根の更に他の実施形態を示し、（ａ）は斜視図、（ｂ）は平面図、（ｃ）は（ｂ）のＡ−Ａ断面図である。The further another embodiment of the rotary blade of the drainage pump of this invention is shown, (a) is a perspective view, (b) is a top view, (c) is AA sectional drawing of (b). 本発明の排水ポンプの回転羽根の更に他の実施態様を示す平面図である。It is a top view which shows other embodiment of the rotary blade of the drainage pump of this invention.

図１に本発明の一実施形態の排水ポンプを示す。
排水ポンプ１は樹脂製のハウジング１０を有し、ハウジング１０はポンプ室１２に連通する吸込口１４と吐出口１６を備える。ハウジング１０にはカバー２０の蓋部２６がスナップフィット機構により嵌合される。 FIG. 1 shows a drainage pump according to an embodiment of the present invention.
The drainage pump 1 includes a resin housing 10, and the housing 10 includes a suction port 14 and a discharge port 16 that communicate with the pump chamber 12. A lid portion 26 of the cover 20 is fitted into the housing 10 by a snap fit mechanism.

カバー２０は外筒部２２と内筒部２４を有し、カバー２０の上部には係止部４０を介してブラケット５０が取り付けられる。ブラケット５０は排水ポンプ１を他の機器に取り付けるための取付部５２を有する。
カバー２０の内筒部２４はモータ６０を支持し、モータ６０の駆動軸６２はハウジング１０のポンプ室１２内に配置された回転羽根１００の取付軸１１０の挿入穴１１２内に挿入されて回転羽根１００を支持する。回転羽根１００の取付軸１１０はカバー２０の蓋部２６の貫通穴２８を貫通し、駆動軸６２には貫通穴２８から飛び出す水がモータ６０側に飛散するのを防止する水切板７０が取り付けられている。 The cover 20 has an outer cylinder part 22 and an inner cylinder part 24, and a bracket 50 is attached to the upper part of the cover 20 via a locking part 40. The bracket 50 has an attachment portion 52 for attaching the drainage pump 1 to another device.
The inner cylinder portion 24 of the cover 20 supports the motor 60, and the drive shaft 62 of the motor 60 is inserted into the insertion hole 112 of the mounting shaft 110 of the rotary blade 100 disposed in the pump chamber 12 of the housing 10. 100 is supported. The mounting shaft 110 of the rotary blade 100 passes through the through hole 28 of the lid portion 26 of the cover 20, and a water draining plate 70 is attached to the drive shaft 62 to prevent water splashing from the through hole 28 from scattering to the motor 60 side. ing.

本発明の排水ポンプ１に装備される回転羽根１００の詳細を図２に示す。（ａ）は斜視図、（ｂ）は平面図、（ｃ）は（ｂ）のＡ−Ａ断面図である。
回転羽根１００は挿入穴１１２を有する取付軸１１０の下部に小径羽根１２０を備える。取付軸１１０の上部にはリング部材１３０が形成され、リング部材１３０内には大径羽根１５０が設けられる。この回転羽根１００にあっては、８本の大径羽根１５０を備えるが、大径羽根１５０の本数は８本に限定されず、適宜に選択される。リング部材１３０の外周のリング部と底部の皿状部を有し、皿状部の中心には小径羽根１２０側へ通ずる開口部１３２が設けられる。 The detail of the rotary blade 100 with which the drainage pump 1 of this invention is equipped is shown in FIG. (A) is a perspective view, (b) is a plan view, and (c) is an AA sectional view of (b).
The rotary blade 100 includes a small-diameter blade 120 at a lower portion of a mounting shaft 110 having an insertion hole 112. A ring member 130 is formed on the top of the mounting shaft 110, and a large-diameter blade 150 is provided in the ring member 130. The rotary blade 100 includes eight large-diameter blades 150, but the number of large-diameter blades 150 is not limited to eight and is appropriately selected. The ring member 130 has a ring part on the outer periphery and a dish part on the bottom part, and an opening part 132 leading to the small-diameter blade 120 side is provided at the center of the dish part.

回転羽根１００は図２（ｂ）の矢印Ｒ１方向に回転する。開口部１３２の外周部からリング部の内径部の間は、直線状または曲線状の羽根で結ばれる。
回転羽根１００にあっては、大径羽根１５０の回転方向の後側に続く第１の大径補助羽根１６０と第２の大径補助羽根１７０が配設される。
この第１の大径補助羽根１６０と第２の大径補助羽根１７０は、板状の部材であって大径羽根１５０と平行に配置され、大径羽根１５０に均しい厚さ寸法Ｔ１に形成される。また、第１の大径補助羽根１６０、第２の大径補助羽根１７０の内側端は他の部材に接続されないが、外側端はリング部材１３０に接続される。 Rotary vane 100 is rotated in the direction of arrow R 1 in FIG. 2 (b). Between the outer peripheral part of the opening part 132 and the internal diameter part of a ring part, it connects with the linear or curved blade | wing.
In the rotary blade 100, a first large-diameter auxiliary blade 160 and a second large-diameter auxiliary blade 170 that follow the rear side in the rotation direction of the large-diameter blade 150 are disposed.
The first large-diameter auxiliary blade 160 and the second large-diameter auxiliary blade 170 are plate-like members and are arranged in parallel with the large-diameter blade 150, and have a thickness T 1 equal to the large-diameter blade 150. It is formed. The inner ends of the first large-diameter auxiliary blade 160 and the second large-diameter auxiliary blade 170 are not connected to other members, but the outer ends are connected to the ring member 130.

回転羽根１００は樹脂材料を射出成型して製造される。上述した構成を備えることにより、金型内での樹脂の流動も円滑であって、成型不良などが防止される。
回転羽根１００が回転すると、図２（ｃ）で示すように、大径羽根１５０の前面から第１の大径補助羽根１６０、第２の大径補助羽根１７０の側への流れＦが発生する。
大径羽根１５０の前面の水圧Ｐ１に比べて第２の大径補助羽根１７０の後側の水圧Ｐ２は低くなる。 The rotary blade 100 is manufactured by injection molding a resin material. By providing the above-described configuration, the flow of the resin in the mold is smooth, and molding defects and the like are prevented.
When the rotary blade 100 rotates, a flow F from the front surface of the large-diameter blade 150 toward the first large-diameter auxiliary blade 160 and the second large-diameter auxiliary blade 170 is generated as shown in FIG. .
The water pressure P 2 on the rear side of the second large diameter auxiliary blade 170 is lower than the water pressure P 1 on the front surface of the large diameter blade 150.

回転羽根１００にあっては、大径羽根１５０の上面１５２、第１の大径補助羽根１６０の上面１６２、第２の大径補助羽根１７０の上面１７２は、直線的に段々に低くなるように形成されている。
大径羽根１５０前面の圧力Ｐ１と後流側の大径羽根１５０後面の圧力Ｐ２は圧力差が大きく、後流側にキャビテーションが発生し易いが、第１の大径補助羽根１６０、第２の大径補助羽根１７０の順に上端を徐々に低くすることにより水流Ｆがスムーズに流れ、Ｐ１からＰ２の圧力差が徐々に緩和され、キャビテーションの発生が低減される。
この作用により、排水ポンプ１の運転時の振動と騒音は低減される。
大径羽根１５０の上端面のリーディングエッジ１５４は平坦面に形成されており、大径羽根１５０を乗り越える水流Ｆをスムーズに案内する。 In the rotary blade 100, the upper surface 152 of the large-diameter blade 150, the upper surface 162 of the first large-diameter auxiliary blade 160, and the upper surface 172 of the second large-diameter auxiliary blade 170 are linearly lowered step by step. Is formed.
There is a large pressure difference between the pressure P 1 on the front surface of the large-diameter blade 150 and the pressure P 2 on the rear surface of the large-diameter blade 150 on the wake side, and cavitation is likely to occur on the wake side. water flow F by gradually lowering the upper end in the order of 2 large diameter auxiliary blade 170 flows smoothly, a pressure difference P 2 from P 1 is gradually relaxed, cavitation is reduced.
By this action, vibration and noise during operation of the drainage pump 1 are reduced.
The leading edge 154 on the upper end surface of the large-diameter blade 150 is formed to be a flat surface, and smoothly guides the water flow F over the large-diameter blade 150.

図３に本発明の排水ポンプの回転羽根の他の実施態様を示す。（ａ）は斜視図、（ｂ）は平面図、（ｃ）は（ｂ）のＡ−Ａ断面図である。
回転羽根２００は、挿入穴２１２を有する取付軸２１０の下部に小径羽根２２０を備える。取付軸２１０の上部にはリング部材２３０が形成され、リング部材２３０内には大径羽根２５０が設けられる。この回転羽根２００にあっては、８本の大径羽根２５０を備えるが、大径羽根２５０の本数は８本に限定されず、適宜に選択される。リング部材２３０の外周のリング部と底部の皿状部を有し、皿状部の中心には小径羽根２２０側へ通ずる開口部２３２が設けられる。 FIG. 3 shows another embodiment of the rotary vane of the drainage pump of the present invention. (A) is a perspective view, (b) is a plan view, and (c) is an AA sectional view of (b).
The rotary blade 200 includes a small-diameter blade 220 below the attachment shaft 210 having the insertion hole 212. A ring member 230 is formed on the top of the mounting shaft 210, and a large-diameter blade 250 is provided in the ring member 230. The rotary blade 200 includes eight large-diameter blades 250, but the number of large-diameter blades 250 is not limited to eight and is appropriately selected. The ring member 230 has a ring part on the outer periphery and a dish part on the bottom part, and an opening part 232 leading to the small-diameter blade 220 side is provided at the center of the dish part.

回転羽根２００は図３（ｂ）の矢印Ｒ１方向に回転する。開口部２３２の外周部からリング部の内径部の間は、直線状または曲線状の羽根で結ばれる。
回転羽根２００にあっては、大径羽根２５０の回転方向の後側に続く第１の大径補助羽根２６０と第２の大径補助羽根２７０が配設される。
この回転羽根２００にあっては、大径羽根２５０の上面２５２、第１の大径補助羽根２６０の上面２６２、第２の大径補助羽根２７０の上面２７２は、円弧に沿って削られる形態で、段々に低くなるように形成されている。 Rotation vane 200 is rotated in the direction of arrow R 1 in FIG. 3 (b). A space between the outer peripheral portion of the opening 232 and the inner diameter portion of the ring portion is connected by a straight or curved blade.
In the rotary blade 200, a first large-diameter auxiliary blade 260 and a second large-diameter auxiliary blade 270 that follow the rear side in the rotation direction of the large-diameter blade 250 are disposed.
In the rotary blade 200, the upper surface 252 of the large-diameter blade 250, the upper surface 262 of the first large-diameter auxiliary blade 260, and the upper surface 272 of the second large-diameter auxiliary blade 270 are cut along a circular arc. It is formed so as to be lowered gradually.

水流は大径羽根２５０側から第２の大径補助羽根２７０側にスムーズに流れて、大径羽根２５０の後流側に発生しがちなキャビテーションの発生が抑制される。
この作用により、排水ポンプ１の運転時の振動と騒音は低減される。
大径羽根２５０の上端面のリーディングエッジ２５４は平坦面に形成されており、大径羽根２５０を乗り越える水流Ｆをスムーズに案内する。 The water flow smoothly flows from the large-diameter blade 250 side to the second large-diameter auxiliary blade 270 side, and the occurrence of cavitation that tends to occur on the downstream side of the large-diameter blade 250 is suppressed.
By this action, vibration and noise during operation of the drainage pump 1 are reduced.
The leading edge 254 at the upper end surface of the large-diameter blade 250 is formed to be a flat surface, and smoothly guides the water flow F over the large-diameter blade 250.

図４に本発明の排水ポンプの回転羽根の更に他の実施態様を示す。（ａ）は斜視図、（ｂ）は平面図、（ｃ）は（ｂ）のＡ−Ａ断面図である。
回転羽根３００は、挿入穴３１２を有する取付軸３１０の下部に小径羽根３２０を備える。取付軸３１０の上部にはリング部材３３０が形成され、リング部材３３０内には大径羽根３５０が設けられる。この回転羽根３００にあっては、８本の大径羽根３５０を備えるが、大径羽根３５０の本数は８本に限定されず、適宜に選択される。リング部材３３０の外周のリング部と底部の皿状部を有し、皿状部の中心には小径羽根３２０側へ通ずる開口部３３２が設けられる。 FIG. 4 shows still another embodiment of the rotary vane of the drainage pump of the present invention. (A) is a perspective view, (b) is a plan view, and (c) is an AA sectional view of (b).
The rotary vane 300 includes a small-diameter vane 320 below the attachment shaft 310 having the insertion hole 312. A ring member 330 is formed on the top of the mounting shaft 310, and a large-diameter blade 350 is provided in the ring member 330. The rotary blade 300 includes eight large-diameter blades 350, but the number of large-diameter blades 350 is not limited to eight and is appropriately selected. The ring member 330 has a ring part on the outer periphery and a dish part on the bottom part, and an opening part 332 that leads to the small-diameter blade 320 side is provided at the center of the dish part.

回転羽根３００は図４（ｂ）の矢印Ｒ１方向に回転する。開口部３３２の外周部からリング部の内径部の間は、直線状または曲線状の羽根で結ばれる。
回転羽根３００にあっては、大径羽根３５０の回転方向の後側に続く大径補助羽根３６０が配設される。
この回転羽根３００にあっては、大径羽根３５０の上面３５２、大径補助羽根３６０の上面３６２は、段々に低くなるように形成されている。 Rotation vane 300 is rotated in an arrow R 1 direction in Figure 4 (b). A space between the outer peripheral portion of the opening 332 and the inner diameter portion of the ring portion is connected by a straight or curved blade.
In the rotary blade 300, a large-diameter auxiliary blade 360 following the rear side in the rotation direction of the large-diameter blade 350 is disposed.
In the rotary blade 300, the upper surface 352 of the large-diameter blade 350 and the upper surface 362 of the large-diameter auxiliary blade 360 are formed so as to be gradually lowered.

水流は大径羽根３５０側から大径補助羽根３７０側にスムーズに流れて、大径羽根３５０の後流側に発生しがちなキャビテーションの発生が抑制される。
この作用により、排水ポンプ１の運転時の振動と騒音は低減される。 The water flow smoothly flows from the large diameter blade 350 side to the large diameter auxiliary blade 370 side, and the occurrence of cavitation that tends to occur on the downstream side of the large diameter blade 350 is suppressed.
By this action, vibration and noise during operation of the drainage pump 1 are reduced.

図５に本発明の排水ポンプの回転羽根の更に他の実施態様を示す。
回転羽根４００は挿入穴４１２を有する取付軸４１０の下部に小径羽根を備える。取付軸４１０の上部にはリング部材４３０が形成され、リング部材４３０内には大径羽根４５０が設けられる。この回転羽根４００にあっては、８本の大径羽根４５０を備えるが、大径羽根４５０の本数は８本に限定されず、適宜に選択される。リング部材４３０の外周のリング部と底部の皿状部を有し、皿状部の中心には小径羽根側へ通ずる開口部４３２が設けられる。 FIG. 5 shows still another embodiment of the rotary vane of the drainage pump of the present invention.
The rotary blade 400 includes a small-diameter blade at the lower portion of the mounting shaft 410 having the insertion hole 412. A ring member 430 is formed on the top of the mounting shaft 410, and a large-diameter blade 450 is provided in the ring member 430. The rotary blade 400 includes eight large-diameter blades 450, but the number of large-diameter blades 450 is not limited to eight and is appropriately selected. The ring member 430 has a ring part on the outer periphery and a dish part on the bottom part, and an opening part 432 leading to the small-diameter blade side is provided at the center of the dish part.

回転羽根４００は図５の矢印Ｒ１方向に回転する。開口部４３２の外周部からリング部の内径部の間は、直線状または曲線状の羽根で結ばれる。
回転羽根４００にあっては、大径羽根４５０の回転方向の後側に続く第１の大径補助羽根４６０と第２の大径補助羽根４７０が配設される。
この回転羽根４００にあっては、大径羽根４５０の上面、第１の大径補助羽根４６０の上面、第２の大径補助羽根４７０の上面は、先の実施例で説明したように、直線又は円弧に沿って、段々に低くなるように形成されている。 Rotation vane 400 is rotated in the direction of arrow R 1 in FIG. 5. A space between the outer peripheral portion of the opening 432 and the inner diameter portion of the ring portion is connected by a straight or curved blade.
In the rotary blade 400, a first large-diameter auxiliary blade 460 and a second large-diameter auxiliary blade 470 are arranged on the rear side in the rotation direction of the large-diameter blade 450.
In the rotary blade 400, the upper surface of the large-diameter blade 450, the upper surface of the first large-diameter auxiliary blade 460, and the upper surface of the second large-diameter auxiliary blade 470 are straight lines as described in the previous embodiment. Alternatively, it is formed so as to be gradually lowered along the arc.

水流は大径羽根４５０側から第２の大径補助羽根４７０側にスムーズに流れて、大径羽根２５０の後流側に発生しがちなキャビテーションの発生が抑制される。
この作用により、排水ポンプ１の運転時の振動と騒音は低減される。
本発明の排水ポンプは、以上の構成を有する回転羽根を備えることにより、運転時の振動と騒音発生を抑制することができる。 The water flow smoothly flows from the large-diameter blade 450 side to the second large-diameter auxiliary blade 470 side, and the occurrence of cavitation that tends to occur on the downstream side of the large-diameter blade 250 is suppressed.
By this action, vibration and noise during operation of the drainage pump 1 are reduced.
The drainage pump of the present invention can suppress vibration and noise generation during operation by including the rotary blade having the above-described configuration.

１ 排水ポンプ
１２ ポンプ室
１４ 吸込口
１６ 吐出口
２０ カバー
２６ 蓋部
５０ ブラケット
６０ モータ
６２ 駆動軸
１００ 回転羽根
１１０ 取付軸
１２０ 小径羽根
１３０ リング部材
１３２ 開口部
１５０ 大径羽根
１６０ 第１の大径補助羽根
１７０ 第２の大径補助羽根 DESCRIPTION OF SYMBOLS 1 Drain pump 12 Pump chamber 14 Suction port 16 Discharge port 20 Cover 26 Cover part 50 Bracket 60 Motor 62 Drive shaft 100 Rotary blade 110 Mounting shaft 120 Small diameter blade 130 Ring member 132 Opening portion 150 Large diameter blade 160 First large diameter auxiliary Blade 170 Second large diameter auxiliary blade

Claims (7)

モータと、前記モータの出力軸に連結される回転羽根と、前記回転羽根を収容するハウジングとを有し、前記ハウジングは下部に設けられる吸込口及び側部に設けられる吐出口を備える排水ポンプであって、
前記回転羽根は、前記モータの出力軸に連結される軸部と、前記軸部から放射方向に延びる板状の大径羽根と、前記大径羽根の回転方向後側に形成される前記大径羽根と同様の厚さ寸法を有する複数の大径補助羽根と、前記大径羽根と連結される板状の小径羽根と、前記大径羽根の外周部を連結するリング部材と、前記リング部材の下端部に連結される中心側に設けられる円形の開口部を有する皿状部材とを備え、
前記大径羽根に続く前記大径補助羽根は前記大径羽根に平行に配設されるとともに、上端は段々に低く形成されることを特徴とする排水ポンプ。 A motor, a rotary vane connected to an output shaft of the motor, and a housing for accommodating the rotation vane, wherein the housing is a drainage pump with a discharge port provided in the inlet and sides is provided in the lower portion There,
The rotary blade includes a shaft portion coupled to an output shaft of the motor, and the large radius vanes plate-like radially extending from the shaft portion, the large diameter the formed in the rotation direction rear side of the large radius vanes a plurality of large-diameter auxiliary vanes having a similar thickness and the blade, wherein a plate-shaped small-diameter vane, which is connected to the large radius vanes, wherein the ring member connecting outer circumferential portion of the large radius vanes, the ring member A dish-like member having a circular opening provided on the center side connected to the lower end,
Wherein together with the large diameter support blade following the large radius vanes is disposed in parallel with the large radius vanes, drain pump, characterized in that the upper end is formed progressively lower. 前記大径羽根と前記大径羽根に続く前記大径補助羽根は上面が直線に沿って削られる形状で段々に低く形成されることを特徴とする請求項１記載の排水ポンプ。 The drainage pump according to claim 1, wherein said large diameter auxiliary blades with large radius vanes follow the the large radius vanes, characterized in that the upper surface is formed progressively lower in shape cut along a straight line. 前記大径羽根と前記大径羽根に続く前記大径補助羽根は上面が円弧に沿って削られる形状で段々に低く形成されることを特徴とする請求項１記載の排水ポンプ。 The drainage pump according to claim 1, wherein the large diameter support blade is the upper surface of the large radius vanes follow the the large radius vanes is being formed progressively lower in shape cut along a circular arc. 前記大径羽根の上面のリーディングエッジは平坦面を有することを特徴とする請求項２又は３記載の排水ポンプ。 The drainage pump according to claim 2 or 3, wherein a leading edge of an upper surface of the large-diameter blade has a flat surface. 前記大径羽根に続く前記大径補助羽根は２枚であることを特徴とする請求項１乃至４のいずれかに記載の排水ポンプ。 The drainage pump according to any one of claims 1 to 4 wherein the large diameter support blade following the large radius vanes is characterized in that it is a two. 前記大径羽根に続く前記大径補助羽根は１枚であることを特徴とする請求項１乃至４のいずれかに記載の排水ポンプ。 The drainage pump according to any one of claims 1 to 4 wherein the large diameter support blade following the large radius vanes is characterized in that it is a one. 前記大径羽根の複数枚は前記軸部から前記皿状部材の前記開口部の間で回転方向にオフセットされる傾斜部を有することを特徴とする請求項１乃至６のいずれかに記載の排水ポンプ。 Drainage according to one of claims 1 to 6 wherein the plurality of large radius vanes is characterized by having an inclined portion that is offset in the rotational direction between the opening of the dish-like member from said shaft portion pump.
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