JP2006006594A - Pump for washing machines - Google Patents

Pump for washing machines Download PDF

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Publication number
JP2006006594A
JP2006006594A JP2004187471A JP2004187471A JP2006006594A JP 2006006594 A JP2006006594 A JP 2006006594A JP 2004187471 A JP2004187471 A JP 2004187471A JP 2004187471 A JP2004187471 A JP 2004187471A JP 2006006594 A JP2006006594 A JP 2006006594A
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runner
pump
pump casing
water
center
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JP2004187471A
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Japanese (ja)
Inventor
Gichu Ota
義注 太田
Shunichi Ishikawa
俊一 石川
Takashi Tomita
隆士 富田
Taichiro Yamashita
太一郎 山下
Tomohiro Okawa
友弘 大川
Toshiyasu Kamano
年恭 釜野
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Hitachi Appliances Inc
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Hitachi Home and Life Solutions Inc
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Priority to JP2004187471A priority Critical patent/JP2006006594A/en
Publication of JP2006006594A publication Critical patent/JP2006006594A/en
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  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sealing Devices (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump for washing machines that does not easily choke up cloth thrums. <P>SOLUTION: The pump for washing machines is provided with a pump casing, a rotary runner placed inside the pump casing and rotates freely, and an electric motor which drives and rotates the rotary runner. A center of rotary shaft of the electric motor is water sealed by a sealing member and inserted into the pump casing. The center of the shaft is provided with a cylindrical cap member preventing foreign matters from entering which covers the water sealed parts and forms a labyrinth structure with the water sealed member to prevent foreign substances from entering. The center of the shaft and a center of the rotary runner shaft are fastened with each other through the cap member for preventing entering of foreign substances. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、洗濯槽および外槽に貯水されている洗濯水を吸い上げて洗濯槽内の洗濯物に撒布したり、使用後の洗たく水を排水する洗濯機用ポンプの改良に係わるものである。   The present invention relates to an improvement in a washing machine pump that sucks up washing water stored in a washing tub and an outer tub and distributes the washing water in the washing tub or drains wash water after use.

洗濯機用ポンプは、例えば、特許文献１（特公平８−２３３５６号公報）に示されるような構成を有する。   The washing machine pump has, for example, a configuration shown in Patent Document 1 (Japanese Patent Publication No. 8-23356).

特許文献１に示される洗濯機用ポンプは、ポンプケーシング、ポンプケーシングに内置される回転自在なる回転ランナとを有する。   The washing machine pump disclosed in Patent Document 1 includes a pump casing and a rotatable rotating runner installed in the pump casing.

特公平８−２３３５６号公報Japanese Patent Publication No.8-23356

上記特許文献１に示すような形態の洗濯機用ポンプは、ポンプケーシングと回転ランナの隙間に布屑が詰まったり、吐出口に布屑が引っ掛たり、回転ランナを駆動するモータ回転軸に布屑が巻きつき、モータ回転をロックして洗たく水の循環不良や循環不能を来たす可能性があり、布屑に対する配慮が必要である。また巻きついた糸屑に混入する砂粒等がモータ回転軸を水封するシール部材を痛め、水漏れを起す可能性もあり、砂粒等の混入に対する配慮が必要である。   In the washing machine pump of the form shown in Patent Document 1, cloth waste is clogged in the gap between the pump casing and the rotary runner, cloth waste is caught at the discharge port, or the cloth on the motor rotating shaft that drives the rotary runner. There is a possibility that scraps may be wound around, and the rotation of the washing water may be locked by locking the motor rotation. In addition, sand particles or the like mixed in the wound yarn waste may damage the sealing member that seals the motor rotating shaft and cause water leakage, and it is necessary to consider mixing of sand particles and the like.

本発明は、上記の問題に鑑み、布屑の詰まり難い洗濯機用ポンプを提供することを目的とする。   An object of this invention is to provide the pump for washing machines which is hard to clog cloth waste in view of said problem.

本発明は、ポンプケーシング、ポンプケーシングに内置される回転自在なる回転ランナ、これを回転駆動する電動機とを有する洗濯機用循環ポンプにおいて、電動機回転軸芯を水封部に設置したシール部材で水封してポンプケーシング内に挿入し、該軸芯に、水封部を覆い水封部部材とでラビリンス構造を形成する円筒状の異物混入防止キャップ部材を設け、異物混入防止キャップ部材を介して該軸芯と回転ランナ軸芯を締結していることを特徴とする。   The present invention relates to a circulating pump for a washing machine having a pump casing, a rotatable rotating runner installed in the pump casing, and an electric motor for rotationally driving the pump casing. Sealed and inserted into the pump casing, and provided with a cylindrical foreign matter prevention cap member that covers the water seal part and forms a labyrinth structure with the water seal member on the shaft core, and through the foreign matter prevention cap member The shaft core and the rotating runner shaft core are fastened together.

本発明によれば、布屑が詰まり難い洗濯機用ポンプを提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the pump for washing machines which is hard to clog cloth waste can be provided.

本発明の実施形態に係わる実施例を図１〜図１４に沿って説明する。   Examples according to the embodiment of the present invention will be described with reference to FIGS.

この実施形態では、洗濯機用循環ポンプを実施例として述べる。   In this embodiment, a circulation pump for a washing machine will be described as an example.

まず、図１に沿って洗濯機の概要から順に説明する。   First, the outline of the washing machine will be described in order from FIG.

洗う洗濯物１が収納される洗濯槽２は、脱水槽を兼ねる。洗濯槽２の内底には、洗濯物１を攪拌洗浄するところの回動自在なる撹拌体３が備わる。洗濯槽２を内置する外槽４は、洗濯槽２に洗たく水を溜める機能を有する。外槽４の外底部に電動機５が備わる。電動機５は、撹拌体３の攪拌作動、および洗濯槽２の脱水回転を行う。   The washing tub 2 in which the laundry 1 to be washed is stored also serves as a dehydration tub. The inner bottom of the washing tub 2 is provided with a rotatable stirring body 3 for stirring and washing the laundry 1. The outer tub 4 in which the washing tub 2 is placed has a function of storing water to be washed in the washing tub 2. An electric motor 5 is provided on the outer bottom of the outer tub 4. The electric motor 5 performs the stirring operation of the stirring body 3 and the spin-drying rotation of the washing tub 2.

外槽４は、洗濯槽２、電動機５を含めて一緒に洗濯機外枠体６内に吊棒７を用いて吊られる。   The outer tub 4 including the washing tub 2 and the electric motor 5 is suspended together in the outer frame 6 of the washing machine using a suspension bar 7.

洗濯機外枠体６の上側に設けたトップカバー８内には、給水装置９が備わる。給水装置９には、水道ホース１０、給水電磁弁１１を介して水道水が供給される。給水装置９の落し管２０は、洗濯槽２の上側に臨む。落し管２０から水道水が洗濯槽２に注がれる。   A water supply device 9 is provided in the top cover 8 provided on the upper side of the washing machine outer frame 6. Tap water is supplied to the water supply device 9 via a water supply hose 10 and a water supply electromagnetic valve 11. The dropping pipe 20 of the water supply device 9 faces the upper side of the washing tub 2. Tap water is poured from the drop tube 20 into the washing tub 2.

トップカバー８は、外蓋２１と、内蓋２２を有する。洗濯槽２の上側にシャワー口２３が備わる。このシャワー口２３から洗たく水が洗濯槽２内の洗濯物１に洗濯運転中に撒布される。   The top cover 8 has an outer lid 21 and an inner lid 22. A shower port 23 is provided on the upper side of the washing tub 2. Water to be washed from the shower port 23 is distributed to the laundry 1 in the washing tub 2 during the washing operation.

水位センサー２４は、トップカバー８内に備わる。水位センサー２４のチューブ２５は外槽４の下側寄りに連通するように備わる。この水位センサー２４により、洗濯槽２の水位２６が検知される。外槽４の下側に排水路２７が備わる。使用後の洗たく水は、排水路２７の排水弁２８を開いて排水する。   The water level sensor 24 is provided in the top cover 8. The tube 25 of the water level sensor 24 is provided so as to communicate with the lower side of the outer tub 4. This water level sensor 24 detects the water level 26 of the washing tub 2. A drainage channel 27 is provided below the outer tub 4. The wash water after use is drained by opening the drain valve 28 of the drainage channel 27.

電動ポンプユニット４０は、外槽４の下方にできる洗濯機外枠体６内の空間に備わる。この電動ポンプユニット４０は、図２ないし図３に示すように電動機４１と洗濯機用循環ポンプ４２を有する。   The electric pump unit 40 is provided in a space inside the washing machine outer frame 6 that is formed below the outer tub 4. The electric pump unit 40 includes an electric motor 41 and a washing machine circulation pump 42 as shown in FIGS.

洗濯機用循環ポンプ４２の吸込水路４３は、排水路２７の一部を介して洗濯槽２に連通する。洗濯機用循環ポンプ２７の吐出水路４４は、洗濯槽２の上側に亘って延びている。この吐出水路４４の先端に前記シャワー口２３がつながる。吐出水路４４の途中に布屑捕集手段を備えることも在り得る。この吐出水路４４は、洗濯機外枠体６内の狭い空間に備えられる。   The suction water channel 43 of the washing machine circulation pump 42 communicates with the washing tub 2 through a part of the drainage channel 27. The discharge water channel 44 of the washing machine circulation pump 27 extends over the upper side of the washing tub 2. The shower port 23 is connected to the tip of the discharge water channel 44. It is possible to provide cloth waste collecting means in the middle of the discharge water channel 44. The discharge water channel 44 is provided in a narrow space in the outer frame 6 of the washing machine.

電動機４１は隈とりモータで、洗濯機用循環ポンプ４２の反対側には冷却ファン４５が備わる。洗濯機用循環ポンプ４２は、長い通しボルト４６を用いて冷却ファン４５の反対側に備わるエンドブラケット４７に締め付け固定される。   The electric motor 41 is a saddle motor, and a cooling fan 45 is provided on the opposite side of the washing machine circulation pump 42. The washing machine circulation pump 42 is fastened and fixed to an end bracket 47 provided on the opposite side of the cooling fan 45 using a long through bolt 46.

洗濯機用循環ポンプ４２は、ポンプケーシング６０、このポンプケーシング６０に内置される回転自在なる回転ランナ６１を有する。この洗濯機用循環ポンプ４２は遠心型のポンプであって、回転ランナ６１の回転中心側に吸い込み、回転ランナ６１の外周方向に吐き出す。   The washing machine circulation pump 42 has a pump casing 60 and a rotatable runner 61 that is rotatably installed in the pump casing 60. The washing machine circulation pump 42 is a centrifugal pump, and sucks in the rotation center side of the rotary runner 61 and discharges it in the outer peripheral direction of the rotary runner 61.

回転ランナ６１は、ランナ基盤６２と、ランナ基盤６２に立上がるように設けられ、かつランナ回転軸心から放射方向に延在する複数のランナ羽根６３を有する。ポンプケーシング６０は、吸込口６４と、吐出口６５を有する。吸込口６４は、ランナ基盤６２の反対側で、ランナ羽根６３の中心に対向するところに設けた。吐出口６５は、ランナ羽根６３の外周側に対向する周囲部に設けた。   The rotating runner 61 includes a runner base 62 and a plurality of runner blades 63 provided so as to stand up on the runner base 62 and extending radially from the runner rotation axis. The pump casing 60 has a suction port 64 and a discharge port 65. The suction port 64 is provided on the opposite side of the runner base 62 and facing the center of the runner blade 63. The discharge port 65 was provided in the peripheral portion facing the outer peripheral side of the runner blade 63.

ポンプケーシング６０は、吸込口６４の反対内側に環状のシール保持部６６を有する。このシール保持部６６に保持するシール部材６７によって、ランナ羽根６３を支持する回転軸６８のシールが行われ、ポンプケーシング６０内の洗たく水は、外部に漏水しない。   The pump casing 60 has an annular seal holding part 66 on the inner side opposite to the suction port 64. The sealing member 67 held by the seal holding portion 66 seals the rotary shaft 68 that supports the runner blade 63, and the washing water in the pump casing 60 does not leak outside.

ポンプケーシング６０は、吸込口６４に連なる吸込管６９と、吐出口６５に連なる吐出口管７０を有する。電動ポンプユニット４０は、吸込管６９が横向きに、吐出口管７０が縦向きになるように置かれる。この吸込管６９に吸込水路４３が接続される。吐出口管７０に吐出水路４４が接続される。   The pump casing 60 includes a suction pipe 69 that is continuous with the suction port 64 and a discharge port pipe 70 that is continuous with the discharge port 65. The electric pump unit 40 is placed such that the suction pipe 69 is in the horizontal direction and the discharge port pipe 70 is in the vertical direction. A suction water channel 43 is connected to the suction pipe 69. A discharge water channel 44 is connected to the discharge port pipe 70.

洗濯機用循環ポンプ側の吸込水路４４について図３に沿って説明する。   The suction water channel 44 on the circulation pump side for the washing machine will be described with reference to FIG.

吐出水路４４は、ポンプケーシング６０の吐出口管７０の外周に嵌合する接続管部８０と、接続管部８０に連なり、かつ接続管部８０に対して直角に曲がる第１曲管部８１と、第１曲管部８１に連なり、かつストレートに延びる直管部８２と、直管部８２に連なり、かつ第１曲管部８１と逆向きに直角に曲がる第２曲管部８３とを有する。   The discharge water channel 44 includes a connection pipe portion 80 fitted to the outer periphery of the discharge pipe 70 of the pump casing 60, a first curved pipe portion 81 that is connected to the connection pipe portion 80 and bends at right angles to the connection pipe portion 80. The straight pipe part 82 is connected to the first bent pipe part 81 and extends straight, and the second bent pipe part 83 is connected to the straight pipe part 82 and bends at a right angle in the opposite direction to the first bent pipe part 81. .

吐出口管７０の内径φＤ１は１８ｍｍ程度、直管部８２の内径φＤ２は３０ｍｍ程度である。第１曲管部８１の外側コーナの曲率半径Ｒ２は３０ｍｍ〜４０ｍｍ程度、内側コーナの曲率半径Ｒ１は外側コーナの曲率半径Ｒ２よりも十分に小さい。   The inner diameter φD1 of the discharge port pipe 70 is about 18 mm, and the inner diameter φD2 of the straight pipe portion 82 is about 30 mm. The curvature radius R2 of the outer corner of the first curved pipe portion 81 is about 30 mm to 40 mm, and the curvature radius R1 of the inner corner is sufficiently smaller than the curvature radius R2 of the outer corner.

吐出水路４４は、第２曲管部８３の先に上方に立ち上がる立上管８４を有する。吐出水路４４の管はブロー成形で形成される。   The discharge water channel 44 has a rising pipe 84 that rises upward at the tip of the second curved pipe portion 83. The pipe of the discharge water channel 44 is formed by blow molding.

洗濯機用循環ポンプ４２の吐出口管７０から吐出された洗たく水は、第１曲管部８１で直角に方向変えされ、直管部８２を流れて行く。この第１曲管部８１で直角に方向変が行われる際に外側コーナの曲率半径Ｒ２が小さいと、流れの抵抗が増大し、流速が弱められる。このため、洗たく水に含まれる布屑が、吐出口管７０の近傍に滞留し、洗たく水に乗って直管部８２の方に流れずらくて行かなくなる。しかし、外側コーナの曲率半径Ｒ２は３０ｍｍ〜４０ｍｍ程度にすることにより、流れの管路抵抗が増大せず、流速が弱められない。このため、布屑が吐出口管７０の近傍に滞留することなく、円滑に流すことができるのである。   Washing water discharged from the discharge pipe 70 of the washing machine circulation pump 42 is turned at a right angle by the first curved pipe portion 81 and flows through the straight pipe portion 82. If the curvature radius R2 of the outer corner is small when the first curved pipe portion 81 changes direction at a right angle, the flow resistance increases and the flow velocity is weakened. For this reason, the cloth waste contained in the washing water stays in the vicinity of the discharge port pipe 70, gets on the washing water, and does not easily flow toward the straight pipe portion 82. However, by setting the curvature radius R2 of the outer corner to about 30 mm to 40 mm, the pipe resistance of the flow does not increase and the flow velocity is not weakened. For this reason, cloth waste can flow smoothly without staying in the vicinity of the discharge port pipe 70.

外側コーナの曲率半径Ｒ２は、３０ｍｍ〜４０ｍｍ程度が望ましいが、吐出口管７０の内径φＤ７（１８ｍｍ）程度でも布屑は滞留することなく流れ行く。   The curvature radius R2 of the outer corner is desirably about 30 mm to 40 mm, but the cloth waste flows without staying even if the inner diameter φD7 (18 mm) of the discharge port pipe 70 is about.

洗濯機用循環ポンプ側の吐出水路４４は、上述したように、直管部８２の両側に二つの曲管部（第１曲管部８１、第２曲管部８３）を有する。また、電動機４１と直管部８２は、間隔Ｈ４が７０ｍｍ程度である。このような折れ曲がった吐出水路４４の構成にすることにより、洗濯機外枠体６内側の狭い空間に吐出水路４４を配置することができる。また、このような折れ曲がった吐出水路４４にもかかわらず、第１曲管部８１の外側コーナの曲率半径Ｒ２を吐出口管７０の内径φＤ１より大きくすることで、布屑の滞留を防ぐことができる。   As described above, the discharge water passage 44 on the washing machine circulation pump side has two curved pipe portions (a first curved pipe portion 81 and a second curved pipe portion 83) on both sides of the straight pipe portion 82. The distance between the electric motor 41 and the straight pipe portion 82 is about 70 mm. By adopting such a configuration of the bent discharge water channel 44, the discharge water channel 44 can be arranged in a narrow space inside the outer frame 6 of the washing machine. In addition, in spite of such a bent discharge water channel 44, it is possible to prevent cloth waste from staying by making the radius of curvature R2 of the outer corner of the first curved pipe portion 81 larger than the inner diameter φD1 of the discharge port pipe 70. it can.

回転ランナについて、図４〜図６に沿って説明する。   The rotating runner will be described with reference to FIGS.

回転ランナ６１のランナ基盤６２は、外径φＤ６が５３ｍｍ程度である。ランナ羽根６３は、外径φＤ５が４４ｍｍ程度である。ランナ羽根６３は４枚あるが、２枚は丈が高く、２枚は丈が低い。丈の高くランナ羽根６３と、丈の低いランナ羽根６３aとの丈差は、５ｍｍ程度である。また丈の高くランナ羽根６３の丈は、ランナ基盤の底面部から高いところで１８ｍｍ程度である。   The runner base 62 of the rotary runner 61 has an outer diameter φD6 of about 53 mm. The runner blade 63 has an outer diameter φD5 of about 44 mm. There are four runner blades 63, but two are high and two are low. The difference in height between the runner blade 63 having a high height and the runner blade 63a having a low height is about 5 mm. Further, the length of the runner blade 63 is high, and the height of the runner blade 63 is about 18 mm at a high position from the bottom surface of the runner base.

回転ランナ６１は、ランナ羽根６３、６３aの中心にランナ基盤６２から吸込口６４に向かって立上がる円柱９０を有する。この円柱９０は、ランナ羽根６３の上端よりも吸込口６４に向かって突き出すように高く、かつ円柱９０の上端が球状に丸みを帯びている。円柱９０の外径φＤ８は、１２ｍｍ程度である。円柱９０の上端の球半径Ｒ３は６ｍｍ程度である。ランナ基盤６２の裏面に設けられている軸ボス９１は、外径が円柱９０同程度にすることが望ましい。軸ボス９１と円柱９０の外径を同じにして、ランナ基盤６２の表裏にプラスチックの引け跡ができないようにする。   The rotating runner 61 has a column 90 that rises from the runner base 62 toward the suction port 64 at the center of the runner blades 63 and 63a. The cylinder 90 is higher than the upper end of the runner blade 63 so as to protrude toward the suction port 64, and the upper end of the cylinder 90 is rounded in a spherical shape. The outer diameter φD8 of the cylinder 90 is about 12 mm. The spherical radius R3 at the upper end of the cylinder 90 is about 6 mm. It is desirable that the shaft boss 91 provided on the back surface of the runner base 62 has the same outer diameter as that of the cylinder 90. The outer diameters of the shaft boss 91 and the cylinder 90 are set to be the same so that there is no trace of plastic on the front and back of the runner base 62.

ランナ羽根６３は、ランナ基盤６２に立上がるように設けられ、かつランナ回転軸心から放射方向に延在するように形成される。そして、丈の高いランナ羽根６３と丈の低いランナ羽根６３aを交互に配置している。このランナ羽根６３、６３aの上端側は、ランナ羽根の中心から外周に行くにしたいランナ基盤６２からの高さが低くなる下り傾斜になっている。また、ランナ羽根６３、６３aの外周側は、ランナ基盤６２から離れて上に行くに従い回転ランナ６１の中心に近づく傾斜になっている。ランナ羽根６３,６３aの外周側の傾斜角度θは１０〜２０度程度である。   The runner blade 63 is provided so as to rise on the runner base 62 and is formed to extend in the radial direction from the runner rotation axis. And the runner blade | blade 63 with high height and the runner blade | blade 63a with low height are arrange | positioned alternately. The upper end sides of the runner blades 63, 63a are inclined downward so that the height from the runner base 62 desired to go from the center of the runner blades to the outer periphery is lowered. Further, the outer peripheral sides of the runner blades 63, 63a are inclined so as to approach the center of the rotating runner 61 as they go away from the runner base 62 and go upward. The inclination angle θ on the outer peripheral side of the runner blades 63, 63a is about 10 to 20 degrees.

ポンプケーシング６０の周囲部の内径はφＤ３は、５５ｍｍ程度である。吸込口６４の径φＤ４は、２４ｍｍ程度である。ポンプケーシング６０の吐出口６５の内径φＤ７は、１８ｍｍ程度である。ポンプケーシング６０の吸込口６４の内側部と回転ランナ６１の円柱９０の上端との間隙Ｈ１は、１０ｍｍ程度である。   The inner diameter of the peripheral portion of the pump casing 60 is about 55 mm. The diameter φD4 of the suction port 64 is about 24 mm. An inner diameter φD7 of the discharge port 65 of the pump casing 60 is about 18 mm. A gap H1 between the inner side of the suction port 64 of the pump casing 60 and the upper end of the column 90 of the rotary runner 61 is about 10 mm.

洗濯機用循環ポンプ４２は、洗たく水が吸込口６４からポンプケーシング６０内に吸い込まれる際に、円柱９０に衝突して分散するように外周方向に走る。この外周方向への走りは、回転ランナ６１の中心に円柱９０を設けたことに円滑に行われるので、洗たく水に含まれる布屑がポンプケーシング６０に留まることなく、吐出口６５から吐出され、布屑の詰まりが生じ難い。   When washing water is sucked into the pump casing 60 from the suction port 64, the washing machine circulation pump 42 runs in the outer peripheral direction so as to collide with the cylinder 90 and be dispersed. Since the running in the outer peripheral direction is smoothly performed by providing the column 90 at the center of the rotating runner 61, the cloth waste contained in the washing water is discharged from the discharge port 65 without staying in the pump casing 60, Cloth clogging is difficult to occur.

また、円柱９０の上端は、ランナ羽根６３の上端よりも幾分高く、かつ球状に丸みを帯びているので、円柱９０に衝突して外周方向に飛散する洗たく水の流れが更に円滑に行われる良さがある。   Further, since the upper end of the cylinder 90 is somewhat higher than the upper end of the runner blade 63 and rounded in a spherical shape, the flow of wash water that collides with the cylinder 90 and scatters in the outer peripheral direction is performed more smoothly. There is good.

さらに、ランナ羽根６３の上端側は、ランナ羽根の中心から外周に行くにしたいランナ基盤６２からの高さが低くなる下り傾斜になっているので、吸込口６４から吐出口６５に向かう流れが直角より大きな角度になり、吐出口６５への吐出流が良く行われ、布屑の詰まりが生じ難い。   Furthermore, the upper end side of the runner blade 63 has a downward slope in which the height from the runner base 62 that is desired to go from the center of the runner blade to the outer periphery is low, so that the flow from the suction port 64 to the discharge port 65 is perpendicular. The angle becomes larger, the discharge flow to the discharge port 65 is performed well, and clogging of cloth waste is difficult to occur.

さらにまた、ランナ羽根６３の外周側は、ランナ基盤６２から離れて上に行くに従い回転ランナ６１の中心に近づく傾斜になっている。つまり、ランナ羽根６３の外周側には、傾斜分だけにポンプケーシング６０の周囲部との間の隙間が増え、布屑の噛込みが生じ難く、洗濯機用循環ポンプ４２の回転ロックが生じ難くなった。   Furthermore, the outer peripheral side of the runner blade 63 is inclined to approach the center of the rotating runner 61 as it goes away from the runner base 62 and goes up. In other words, on the outer peripheral side of the runner blade 63, a clearance between the peripheral portion of the pump casing 60 is increased by an amount corresponding to the inclination, and it is difficult for cloth waste to be caught and rotation lock of the circulation pump 42 for the washing machine is difficult to occur. became.

また、複数のランナ羽根６３、６３aは、丈の高くランナ羽根と、丈の低いランナ羽根を組み合わせて構成されているので、ランナ羽根の中心部に段差ができ、布屑が中心部の交点を跨ぐような引っ掛かりが生じ難く、布屑は外周方向に容易に移動する。このため、同じ丈のランナ羽根を備えるものに比べて回転ランナ６１の中心に布屑が引っ掛か難く、布屑詰まりが生じ難い。   Further, since the plurality of runner blades 63, 63a are configured by combining the runner blades having a high length and the runner blades having a low length, a step is formed in the center portion of the runner blade, and the cloth waste is formed at the intersection of the center portions. It is difficult to get caught over and cloth waste easily moves in the outer peripheral direction. For this reason, it is difficult for cloth waste to be caught at the center of the rotating runner 61 as compared with the one having runner blades of the same length, and it is difficult for cloth waste to be clogged.

ポンプケーシングについて、図７に沿って説明する。   The pump casing will be described with reference to FIG.

ポンプケーシング４２は、周囲部の内側面に***部９２を有する。***部９２は、回転ランナ６１の回転方向の前方になる吐出口６５の縁部近傍に設けた。吐出管７０の板厚ｔは１ｍｍ〜１．５ｍｍ程度である。吐出管７０の回転方向前方端面から***部９２までの長さＬは、２ｍｍ程度である。ポンプケーシング４２の周囲部の内側面から***部９２の上端までの丈は２ｍｍ程度である。***部９２の上端と回転ランナ６１の外周とのギャップＧ２は、２ｍｍ程度である。回転ランナ６１の外周とポンプケーシング４２の周囲部の内側面とのギャップＧ１は、２ｍｍ〜４ｍｍ程度である。   The pump casing 42 has a raised portion 92 on the inner side surface of the peripheral portion. The raised portion 92 is provided in the vicinity of the edge of the discharge port 65 that is in front of the rotating runner 61 in the rotational direction. The plate thickness t of the discharge pipe 70 is about 1 mm to 1.5 mm. The length L from the front end surface in the rotation direction of the discharge pipe 70 to the raised portion 92 is about 2 mm. The length from the inner side surface of the peripheral portion of the pump casing 42 to the upper end of the raised portion 92 is about 2 mm. A gap G2 between the upper end of the raised portion 92 and the outer periphery of the rotating runner 61 is about 2 mm. A gap G1 between the outer periphery of the rotating runner 61 and the inner side surface of the peripheral portion of the pump casing 42 is about 2 mm to 4 mm.

また、ポンプケーシング４２は、周囲部の内周面に角部９３を有する。この角部９３は、吐出口６５の口縁部で、回転ランナ６１の回転方向側になるところに設けた。この角部９３から回転前方に向かう近傍に前記***部９２は位置する。   The pump casing 42 has a corner 93 on the inner peripheral surface of the peripheral portion. The corner portion 93 is provided at the edge portion of the discharge port 65 on the rotational direction side of the rotating runner 61. The raised portion 92 is located in the vicinity of the corner 93 toward the front of the rotation.

洗たく水に含まれる布屑が、ポンプケーシング６０の吐出口６５から洗たく水とともに吐出される際に、角部９３に引っ掛かる。この布屑は、***部９２に跨るように引っ掛かるので、***部９２が存在しない場合と違い、大きく曲がるような緩やかな引っ掛かり状態になる。このため、ポンプケーシング６０内を流れる水流や、吐出口６５から吐出する吐出水流によって、その布屑は直に外れるので、布屑詰まりが生じ難い。   When the cloth waste contained in the water to be washed is discharged from the discharge port 65 of the pump casing 60 together with the water to be washed, it is caught by the corner portion 93. Since this cloth waste is caught so as to straddle the raised portion 92, unlike the case where the raised portion 92 does not exist, the cloth waste is in a loosely caught state where it bends greatly. For this reason, since the cloth waste is directly removed by the water flow flowing in the pump casing 60 or the discharge water flow discharged from the discharge port 65, the cloth waste is hardly clogged.

図８は、ポンプケーシングの別の実施例を示す。   FIG. 8 shows another embodiment of the pump casing.

図７に示す実施例との違いは、***部９２、角部９３を撤去して円弧部を設けたところにある。すなわち、吐出口６５の口縁部で、回転ランナ６１の回転方向側になるところに円弧部９４を設けた。この円弧部９４の半径Ｒ４は、５ｍｍ〜１０ｍｍ程度である。   The difference from the embodiment shown in FIG. 7 is that the raised portion 92 and the corner portion 93 are removed and an arc portion is provided. That is, the circular arc portion 94 is provided at the edge of the discharge port 65 on the rotational direction side of the rotary runner 61. The arc portion 94 has a radius R4 of about 5 mm to 10 mm.

洗たく水に含まれる布屑が、ポンプケーシング６０の吐出口６５から洗たく水とともに吐出される際に、円弧部９４に沿って円滑に流れるので、布屑の引つ掛かりは生じない。なお、ポンプ性能の面では、角部９３を設けるのが望ましく、半径Ｒ４を５ｍｍ〜１０ｍｍ程度にすることで、ポンプ性能を損ねず、布屑詰まりを解消できる。   When the cloth waste contained in the washing water is discharged along with the washing water from the discharge port 65 of the pump casing 60, the cloth waste flows smoothly along the arc portion 94, so that the cloth waste is not caught. In terms of pump performance, it is desirable to provide the corner portion 93. By setting the radius R4 to about 5 mm to 10 mm, the pump performance is not impaired, and cloth clogging can be eliminated.

図９は、ポンプケーシングの別の実施例を示す。   FIG. 9 shows another embodiment of the pump casing.

この実施例は、ポンプケーシング４２の周囲部にラジアル方向に向けて周囲部の円形包絡線の外周側に膨出する膨出部９５を設け、この膨出部９５から円形包絡線の接線方向に延びる吐出管７０を設けたところが特徴である。この実施例では、周囲部に臨む膨出部９５の間口が吐出口６５になる。この吐出口６５から吐出される洗たく水は、一旦、膨出部９の奥側に向かってから吐出管７０に向かう流れになる。この膨出部９の奥側に向かう流れにより、角部９３に引っ掛かる布屑が減少し、少なくなり、布屑詰まりが生じ難くなる。   In this embodiment, a bulging portion 95 bulging toward the outer peripheral side of the circular envelope in the peripheral portion is provided in the peripheral portion of the pump casing 42 in the radial direction, and the bulging portion 95 extends in a tangential direction of the circular envelope. A feature is that an extended discharge pipe 70 is provided. In this embodiment, the outlet of the bulging portion 95 facing the peripheral portion becomes the discharge port 65. The washing water discharged from the discharge port 65 once flows toward the discharge pipe 70 from the back side of the bulging portion 9. Due to the flow toward the back side of the bulging portion 9, cloth waste caught on the corner portion 93 is reduced and reduced, and cloth waste clogging is less likely to occur.

ここまでの説明は、回転ランナやポンプケーシングの構造に工夫を講じて布屑詰まりの解消について述べたが、回転ランナを間欠的に止める間欠運転によっても布屑詰まり防止が図られる。   In the description so far, the structure of the rotary runner and the pump casing has been devised to eliminate the cloth clogging. However, the cloth clogging can also be prevented by intermittent operation in which the rotating runner is intermittently stopped.

回転ランナの回転を止めると、吐出水路内の洗たく水がポンプケーシング内を通じて吸込水路に逆流する。この逆流に乗って、ポンプケーシングに滞留していた布屑が、吸込水路に移る。次の回転ランナの回転により、布屑は洗たく水の流れに乗って、吐出水路側に吐き出されるので、布屑詰まり防止が実現される。   When the rotation of the rotating runner is stopped, the wash water in the discharge water channel flows back into the suction water channel through the pump casing. The cloth waste that has stayed in the pump casing rides on the reverse flow and moves to the suction channel. By the next rotation of the rotating runner, the cloth waste gets on the flow of the washing water and is discharged to the discharge water channel side, so that cloth waste clogging can be prevented.

図１０は、ポンプケーシングの別の実施例を示す。   FIG. 10 shows another embodiment of the pump casing.

この実施例は、ポンプケーシング４２の円形の周囲部に吐出口６５を設け、この吐出口６５に連なる吐出口管７０を設け、この吐出口管７０の延在方向を回転ランナ６１の中心から外周に向かうラジアル線上に設けたところが特徴である。   In this embodiment, a discharge port 65 is provided in a circular peripheral portion of the pump casing 42, a discharge port pipe 70 connected to the discharge port 65 is provided, and the extending direction of the discharge port pipe 70 is changed from the center of the rotary runner 61 to the outer periphery. The feature is that it is provided on the radial line toward

すなわち、吐出口管７０は、円形の周囲部の接線に対して直交する方向に延在している。ポンプケーシング４２内から吐出口管７０に向かう洗たく水の流れは、直角に曲がる流れになる。この流れは、回転ランナ６１の正逆回転ともに同じである。正逆回転とも同じポンプ性能であるので、正逆回転式のポンプに向く。   That is, the discharge port tube 70 extends in a direction orthogonal to the tangent line of the circular peripheral portion. The flow of wash water from the pump casing 42 toward the discharge port pipe 70 is a flow that bends at a right angle. This flow is the same for both forward and reverse rotations of the rotating runner 61. Since forward and reverse rotation has the same pump performance, it is suitable for forward and reverse rotation type pumps.

回転ランナ６１の外周とポンプケーシング４２の周囲部との隙間は、吐出口管７０に近いところでのギャップＧ４を４ｍｍ〜８ｍｍ程度に、遠く離れたところでのギャップＧ３を２ｍｍ〜４ｍｍ程度に設けた。このように吐出口管７０に近いところでのギャップを広げることにより、ポンプ性能を向上させることができる。   The gap between the outer periphery of the rotary runner 61 and the peripheral portion of the pump casing 42 is provided with a gap G4 near the discharge port pipe 70 of about 4 mm to 8 mm and a gap G3 at a distance of about 2 mm to 4 mm. Thus, the pump performance can be improved by widening the gap near the discharge port pipe 70.

図１１は、洗濯機用循環ポンプの別の実施例を示す。この実施例に基づいて説明する。   FIG. 11 shows another embodiment of a circulation pump for a washing machine. This will be described based on this embodiment.

この実施例は、回転ランナ６１の回転中心と吸込口６４の中心をＨ２（５ｍｍ）程度ずらしたところが特徴である。   This embodiment is characterized in that the rotation center of the rotary runner 61 and the center of the suction port 64 are shifted by about H2 (5 mm).

回転ランナ６１の回転中心を吸込口６４の中心よりずらすことにより、ポンプケーシング４２内に洗たく水と同時に入った空気の分離性能がよくなる。すなわち、吸込口６４から流入する空気の混った水は、回転ランナ６１の回転中心に集中せず、渦がずれるような状態になる。この渦ずれにより、空気の水の分離がしやすくなる。空気と水の分離がよくなるので、ポンプ性能が向上する。また、回転ランナ６１でかき回される水に含まれる空気分が少なくなるので、騒音が低減される。   By shifting the rotation center of the rotary runner 61 from the center of the suction port 64, the separation performance of the air that enters the pump casing 42 simultaneously with the water to be washed is improved. That is, the water mixed with air flowing in from the suction port 64 does not concentrate on the rotation center of the rotating runner 61, and the vortex is shifted. This vortex slip makes it easier to separate the water from the air. Since the separation of air and water is improved, the pump performance is improved. Moreover, since the air content contained in the water stirred by the rotary runner 61 is reduced, noise is reduced.

また、布屑は回転ランナ６１の中心部に絡みずらくなる。布屑が回転ランナ６１の中心からずれされて、回転ランナ６１の外周側へ吐出され、吐出口６５から排出されやすくなる。   Further, the cloth waste is not easily entangled with the central portion of the rotating runner 61. The cloth waste is displaced from the center of the rotating runner 61 and discharged to the outer peripheral side of the rotating runner 61, and is easily discharged from the discharge port 65.

回転ランナ６１の回転中心と吸込口６４の中心をずらすと、本来はポンプの効率を悪くするようになるが、Ｈ２（５ｍｍ程度）以内であれば洗濯機用循環ポンプとして支障ない流量が得られる。   If the rotation center of the rotating runner 61 and the center of the suction port 64 are shifted, the efficiency of the pump is originally deteriorated, but if it is within H2 (about 5 mm), a flow rate that does not hinder the circulation pump for the washing machine can be obtained. .

図１２は、本発明の実施例にかかわる洗濯機用循環ポンプのポンプ性能を示す。このポンプ性能について説明する。   FIG. 12 shows the pump performance of the circulation pump for a washing machine according to the embodiment of the present invention. This pump performance will be described.

このポンプ性能は、図４を引用して述べた円柱９０の外径φＤ８と吸込口６４の径φＤ４との関係比（φＤ８／φＤ４）に対する吐出口管７０の吐出量を示す。揚程は、図１に示す高さＨ３が５００ｍｍ程度である。   This pump performance indicates the discharge amount of the discharge port pipe 70 with respect to the relationship ratio (φD8 / φD4) between the outer diameter φD8 of the cylinder 90 and the diameter φD4 of the suction port 64 described with reference to FIG. As for the head, the height H3 shown in FIG. 1 is about 500 mm.

布屑の絡みを抑える円柱９０は、外径が吸込口６４の口径の半分以下にすることにより、布屑絡が少なく、ポンプ性能も良好な洗濯機用循環ポンプを提供できる。   The cylinder 90 that suppresses the entanglement of cloth waste can provide a circulation pump for a washing machine that has less cloth entanglement and good pump performance by making the outer diameter less than half the diameter of the suction port 64.

図１３は、洗濯機用循環ポンプの別の実施例を示す。図１３において図２と同一符号は同一物を表す。図１４は図１３にＥで示す部分の詳細図である。   FIG. 13 shows another embodiment of a circulation pump for a washing machine. In FIG. 13, the same reference numerals as those in FIG. FIG. 14 is a detailed view of a portion indicated by E in FIG.

この実施例は、シール保持部６６の直近に異物混入防止キャップ部材１００を設けたところが特徴である。   This embodiment is characterized in that a foreign matter mixing prevention cap member 100 is provided in the immediate vicinity of the seal holding portion 66.

ランナ基盤６２の裏側には回転中心に軸ボス１０１が形成され、金属のメスネジが埋め込まれている。   A shaft boss 101 is formed at the center of rotation on the back side of the runner base 62, and a metal female screw is embedded therein.

ポンプケーシング６０はポンプケーシングＡ６０ａとポンプケーシングＢ６０ｂで構成される。ポンプケーシングＢ６０ｂには環状のシール保持部６６を設け、このシール保持部にシール部材６７がはめ込まれ、電動機４１の回転軸６８を水封する。先端部にオネジが切ってある電動機４１の回転軸６８は、シール部材６７を介して、ポンプケーシング６０内に貫通している。回転軸６８には平座１０２と円筒状の異物混入防止キャップ部材１００が嵌められ、軸ボス１０１のネジで締結されている。シール保持部６６の上端面の一部には円形のリブ１０３が設けられ、異物混入防止キャップ部材１００の開口円筒部とでラビリンス１０４を形成している。   The pump casing 60 includes a pump casing A 60a and a pump casing B 60b. The pump casing B60b is provided with an annular seal holding portion 66, and a seal member 67 is fitted into the seal holding portion, and the rotary shaft 68 of the electric motor 41 is sealed with water. The rotating shaft 68 of the electric motor 41 having a male screw cut at the distal end portion passes through the pump casing 60 via a seal member 67. A flat seat 102 and a cylindrical foreign matter mixing prevention cap member 100 are fitted to the rotary shaft 68 and fastened with screws of the shaft boss 101. A circular rib 103 is provided on a part of the upper end surface of the seal holding portion 66, and a labyrinth 104 is formed with the open cylindrical portion of the foreign matter mixing prevention cap member 100.

電動機４１の回転でランナ基盤６２が回転すると、図１３に矢印で示す水の流れが回転ランナ６１の裏側のポンプケーシング６０内に生じる。ポンプ運転中には循環水に多くの異物例えば糸屑、砂粒等がふくまれており、これがランナ基盤６２とポンプケーシング６０の隙間１０５から混入する。混入した糸屑は、もし異物混入防止キャップ部材１００とラビリンス１０４が無ければ、シール保持部６６に進入し、やがて糸状に捩れ回転軸６８に絡み付き電動機４１の回転がロックする恐れがある。またこれが成長すると、シール部材６７にダメージを与え水封が壊れる恐れもある。   When the runner base 62 is rotated by the rotation of the electric motor 41, a water flow indicated by an arrow in FIG. 13 is generated in the pump casing 60 on the back side of the rotary runner 61. During the operation of the pump, many foreign substances such as lint, sand particles, etc. are contained in the circulating water, and this enters from the gap 105 between the runner base 62 and the pump casing 60. If the foreign matter mixture prevention cap member 100 and the labyrinth 104 are not present, the mixed yarn waste enters the seal holding portion 66 and eventually twists like a thread and becomes entangled with the rotary shaft 68 and may lock the rotation of the electric motor 41. If this grows, the seal member 67 may be damaged and the water seal may be broken.

異物混入防止キャップ部材１００とラビリンス１０４は前述の水の流れを遮断し、シール保持部６６に糸屑等の異物が混入するのを防ぎ、洗濯機用循環ポンプの信頼性を向上し、寿命を延ばす効果をもたらす。   The foreign matter mixing prevention cap member 100 and the labyrinth 104 block the above-mentioned flow of water, prevent foreign matters such as lint from entering the seal holding portion 66, improve the reliability of the circulation pump for the washing machine, and improve the service life. Prolongs the effect.

またポンプケーシングＢ６０ｂの外周Ｒ部１０６は、洗濯機用循環ポンプの回転軸６８をほぼ水平に設置したとき、比重の大きな砂粒等の異物が裏側のポンプケーシング６０内に溜まるのを防止する。   Further, the outer periphery R portion 106 of the pump casing B60b prevents foreign matter such as sand particles having a large specific gravity from accumulating in the pump casing 60 on the back side when the rotating shaft 68 of the circulation pump for the washing machine is installed almost horizontally.

本発明の実施形態にかかわる実施例で、洗濯機の縦断面図である。It is an Example concerning embodiment of this invention, and is a longitudinal cross-sectional view of a washing machine. 本発明の実施形態にかかわる実施例で、洗濯機用循環ポンプ電動機の正面図である。It is an Example concerning embodiment of this invention, and is a front view of the circulation pump electric motor for washing machines. 本発明の実施形態にかかわる実施例で、洗濯機用循環ポンプ電動機と吐出水路と示す図である。In the Example concerning embodiment of this invention, it is a figure which shows the circulation pump electric motor for washing machines, and a discharge water channel. 本発明の実施形態にかかわる実施例で、回転ランナとポンプケーシングとの関係を示す図である。It is an Example concerning embodiment of this invention, and is a figure which shows the relationship between a rotation runner and a pump casing. 本発明の実施形態にかかわる実施例で、回転ランナの正面図である。It is an Example concerning embodiment of this invention, and is a front view of a rotation runner. 本発明の実施形態にかかわる実施例で、回転ランナの正面図である。It is an Example concerning embodiment of this invention, and is a front view of a rotation runner. 本発明の実施形態にかかわる実施例で、ポンプケーシングの断面図である。It is an Example concerning embodiment of this invention, and is sectional drawing of a pump casing. 本発明の実施形態にかかわる別の実施例で、ポンプケーシングの断面図である。It is another Example concerning embodiment of this invention, and is sectional drawing of a pump casing. 本発明の実施形態にかかわる別の実施例で、ポンプケーシングの断面図である。It is another Example concerning embodiment of this invention, and is sectional drawing of a pump casing. 本発明の実施形態にかかわる別の実施例で、ポンプケーシングの断面図である。It is another Example concerning embodiment of this invention, and is sectional drawing of a pump casing. 本発明の実施形態にかかわる別の実施例で、洗濯機用循環ポンプ電動機の正面図である。It is another Example concerning embodiment of this invention, and is a front view of the circulation pump electric motor for washing machines. 本発明の実施形態にかかわる実施例で、ポンプの吐出量の特性を示す図である。It is an Example concerning embodiment of this invention, and is a figure which shows the characteristic of the discharge amount of a pump. 本発明の実施形態にかかわる別の実施例で、ポンプケーシングの断面図である。It is another Example concerning embodiment of this invention, and is sectional drawing of a pump casing. 本発明の実施形態にかかわる別の実施例で、ポンプケーシング一部の詳細断面図である。It is another Example concerning embodiment of this invention, and is a detailed sectional drawing of a pump casing part.

符号の説明Explanation of symbols

６０…ポンプケーシング、６１…回転ランナ、６２…ランナ基盤、６３…ランナ羽根、
６４…吸込口、６５…吐出口、９０…円柱、１００…異物混入防止キャップ部材、１０４…ラビリンス。 60 ... pump casing, 61 ... rotating runner, 62 ... runner base, 63 ... runner blade,
64 ... Suction port, 65 ... Discharge port, 90 ... Cylinder, 100 ... Foreign matter mixing prevention cap member, 104 ... Labyrinth.

Claims (1)

ポンプケーシング、ポンプケーシングに内置される回転自在なる回転ランナ、前記回転ランナを回転駆動する電動機とを有する洗濯機用ポンプにおいて、
前記電動機の回転軸芯を水封部に設置したシール部材で水封して前記ポンプケーシング内に挿入し、
前記ポンプケーシング内の前記回転軸芯に、前記水封部を覆い前記水封部部材とでラビリンス構造を形成する円筒状の異物混入防止キャップ部材を設け、
前記異物混入防止キャップ部材を介して、前記回転ランナを前記回転軸芯に締結したことを特徴とする洗濯機用ポンプ。
In a washing machine pump having a pump casing, a rotatable runner placed in the pump casing, and an electric motor that rotationally drives the rotary runner,
Sealing the rotating shaft core of the electric motor with a sealing member installed in a water seal portion and inserting it into the pump casing,
A cylindrical foreign matter mixing prevention cap member that covers the water seal portion and forms a labyrinth structure with the water seal portion member is provided on the rotating shaft core in the pump casing,
The washing machine pump, wherein the rotating runner is fastened to the rotating shaft core via the foreign matter mixing prevention cap member.
JP2004187471A 2004-06-25 2004-06-25 Pump for washing machines Pending JP2006006594A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102978872A (en) * 2011-09-05 2013-03-20 三星电子株式会社 Washing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102978872A (en) * 2011-09-05 2013-03-20 三星电子株式会社 Washing machine

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