JPH0214790Y2 - - Google Patents

Description

【考案の詳細な説明】[Detailed explanation of the idea]

(イ) 産業上の利用分野 本考案は家庭で使われる洗濯機で、洗濯槽の底
部に設けた回転翼の裏羽根のポンプ作用により、
洗濯槽内の液を洗濯槽壁に沿つて設けた送水路へ
送つてその先端よりリントフイルターを介し洗濯
槽へ放出することにより、液中の糸屑等を捕獲す
るようにしたものに関する。 (ロ) 従来技術 第１図及び第２図に基づき説明する。１は周壁
に多数の脱水用小孔２を有する脱水槽を兼ねる合
成樹脂製の洗濯槽で、その底部には洗濯槽基板３
がネジ４により装着され、この基板３が洗濯槽駆
動軸５に固定されている。洗濯槽１の口縁にはバ
ランスリング１１が装着されている。６は回転翼
で、その翼軸７は前記駆動軸５内に軸支されてい
る。洗濯槽１は外槽８内に設けられ、外槽８の底
面には駆動軸５や翼軸７を回転せしめるモータ９
が軸受ケース１０等が装着され、この外槽８は機
枠（図示せず）上部より吊下されている。 前記回転翼６の裏面には放射状の裏羽根１２が
一体成形され、回転翼の裏側は洗濯槽基板３と洗
濯槽底部凹所１３及び凹所１３の周壁１４とでポ
ンプ室１５が形成されている。前記基板３にはポ
ンプ室１５への吸込口１６が複数個穿設され、ポ
ンプ室１５の吐出口１７は、前記周壁１４の一部
が開放して形成される。この吐出口１７と連通
し、洗濯槽１の底部から側壁上端に亘つて凹溝１
８が形成され、この凹溝１８内に合成樹紙製の水
路カバー１９が嵌め込まれ、ポンプ室１５の送水
路２０となつている。水路カバー１９の下部は、
その下端より一体に延設した舌片２１の裏側より
一体に突設したフツク２２を、洗濯槽１底部裏面
に形成した突部２３に弾性係着させて固定してい
る。水路カバー１９の上端には、送水路２０の吐
出口となり送水路から出る液を内側へ向ける吐出
ダクト２４が一体成形されている。吐出ダクト２
４はバランスリング１１の内側面を窪ませた凹部
２５内に配設させる。この吐出ダクト２４の先端
と相対面して袋状のリントフイルター２６が着脱
自在に取付けられる。リントフイルター２６は、
その口縁を取付けた枠体２７の下端係止片２８
を、バランスリング１１に一体に設けた係止部２
９に係合させ、枠体２７の上端に突設した弾性爪
３０を、バランスリング上面より凹部２５を覆う
よう突設した天井板３１の先端に係止させること
により取付けられる。 そこで洗濯槽１へ規定水位まで給水した後回転
翼６を回転させると、裏羽根１２のポンプ作用に
より、第１図矢印の如く吸込口１６を通つてポン
プ室１５へ吸引された洗濯槽１と外槽８間の液
（結局洗濯槽内の液となる）は、送水路２０へ送
られ、吐出ダクト２４よりリントフイルター２６
へ向けて吐出されて洗濯槽１内へ戻る。この際液
中に含まれた糸屑はリントフイルターで捕獲さ
れ、又吐出ダクト２４より放出される水流にて洗
濯槽内の水流を乱し、洗浄効果を向上させてい
る。 ところで洗濯槽１の水位は、負荷に応じて第１
図の如く例えば４段階Ｈ１，Ｈ２，Ｈ３，Ｈ４と
変化できるようになつているが、前記吐出ダクト
２４より放水される液は、水圧の関係により高水
位の場合は多いが低水位になると少くなる。特に
最近では布傷みを少なくするために、回転翼の直
径を約30（cm）と大きくしてその回転数を約180
〔r.p.m〕と低く且つ１〜２秒間右回転、0.5〜１
秒間休止、１〜２秒間左回転、0.5〜１秒間休止
というように短周期で左右交互に反転させるよう
にした洗濯機があるが、このようなものでは回転
翼の回転時間が短かいので、水位が低くなると吐
出ダクト２４より放水される液が激減し、吐出ダ
クトよりほとんど水が出ず、充分に糸屑を除去す
ることができないという問題があつた。 (ハ) 考案の目的 本考案の目的は、低水位の場合でも充分な液が
送水路より放出された糸屑を除去できるようにす
るところにある。 (ニ) 考案の構成 本考案はポンプ室の送水路の下部の流路面積を
上部に比べて絞つて小さくすることにより、低水
位の際の揚程を上げて、低水位の場合でも送水路
先端よりある程度の水が放出されるようにして、
糸屑が除去できるようにしたものである。 (ホ) 実施例 第３図〜第６図に基づき説明する。ここで従来
例と同じものは同じ図番を附してある。本考案で
は送水路２０を形成するための水路カバー１９の
両側壁の底部から低水位Ｈ４当りに相当する中央
部に至つて、送水路２０内へ張り出したリブ３
５，３５を一体成型して、送水路２０の下部の流
路面積を上部に比べ小さくしている。このように
すれば、送水路からの吐出圧力が高まり、低水位
の場合、従来のものに比べて送水路先端の吐出ダ
クト２４より放出される液の量をかなり増大する
ことができる。又水位が高くなるにつれ、従来の
ものと比べた吐出ダクト２４より放出される液の
増加量が減り、高水位の場合に吐出ダクト２４よ
り液が出すぎて周囲に飛散するようなことがな
い。これは送水路２０の下部だけ絞つて吐出圧力
の上昇を抑えたためである。 下表は送水路下部の流路面積を従来に比べ１／
２とした場合の各水位Ｈ１，Ｈ２，Ｈ３，Ｈ４に
対する吐出ダクトからの吐出量の関係を示したも
のである。ここで回転翼の寸法、回転数それに反
転周期は上述した通り、夫々約30〔cm〕、約180〔r.
p.m〕、0.5〜１秒間休止をはさんで左右交互に１
〜２秒間回転するものであり、ここの吐出量とは
回転翼が一方向へ一回だけ回転している間に吐出
される量を示してある。 (b) Industrial application field This invention is a washing machine used at home, and uses the pumping action of the back blade of the rotor blade installed at the bottom of the washing tub.
This invention relates to a device in which lint, etc. in the liquid is captured by sending the liquid in the washing tub to a water supply channel provided along the wall of the washing tub and discharging it from the tip of the water channel through a lint filter into the washing tub. (b) Prior art This will be explained based on FIGS. 1 and 2. Reference numeral 1 denotes a synthetic resin washing tub which also serves as a dehydration tank and has a large number of small holes 2 for dehydration on the peripheral wall, and a washing tub substrate 3 at the bottom.
is attached with screws 4, and this board 3 is fixed to a washing tub drive shaft 5. A balance ring 11 is attached to the rim of the washing tub 1. Reference numeral 6 denotes a rotary blade, the blade shaft 7 of which is rotatably supported within the drive shaft 5. The washing tub 1 is provided inside an outer tub 8, and a motor 9 for rotating a drive shaft 5 and a blade shaft 7 is mounted on the bottom of the outer tub 8.
A bearing case 10 and the like are attached, and the outer tank 8 is suspended from the upper part of the machine frame (not shown). A radial back blade 12 is integrally molded on the back side of the rotor blade 6, and a pump chamber 15 is formed on the back side of the rotor blade by the washing tub substrate 3, the washing tub bottom recess 13, and the peripheral wall 14 of the recess 13. There is. A plurality of suction ports 16 into the pump chamber 15 are formed in the substrate 3, and a discharge port 17 of the pump chamber 15 is formed by opening a portion of the peripheral wall 14. A concave groove 1 communicates with this discharge port 17 and extends from the bottom of the washing tub 1 to the upper end of the side wall.
8 is formed, and a water channel cover 19 made of synthetic tree paper is fitted into this groove 18 to form a water supply channel 20 of the pump chamber 15. The lower part of the water channel cover 19 is
A hook 22 integrally protruding from the back side of a tongue piece 21 extending integrally from the lower end thereof is fixed by being elastically engaged with a protrusion 23 formed on the back surface of the bottom of the washing tub 1. A discharge duct 24 that serves as a discharge port of the water supply channel 20 and directs liquid coming out of the water channel inward is integrally molded at the upper end of the water channel cover 19. Discharge duct 2
4 is disposed in a recess 25 formed by recessing the inner surface of the balance ring 11. A bag-shaped lint filter 26 is removably attached opposite the tip of the discharge duct 24. The lint filter 26 is
The lower end locking piece 28 of the frame body 27 to which the mouth edge is attached
A locking portion 2 provided integrally with the balance ring 11
9, and the elastic claw 30 protruding from the upper end of the frame body 27 is engaged with the tip of a ceiling plate 31 protruding from the upper surface of the balance ring so as to cover the recess 25. When the rotary blade 6 is rotated after water is supplied to the washing tub 1 up to the specified water level, the washing tub 1 is sucked into the pump chamber 15 through the suction port 16 as shown by the arrow in FIG. 1 due to the pump action of the back blade 12. The liquid between the outer tubs 8 (which eventually becomes the liquid inside the washing tub) is sent to the water supply channel 20 and passed through the discharge duct 24 to the lint filter 26.
It is discharged towards the washing tub 1 and returns to the inside of the washing tub 1. At this time, the lint contained in the liquid is captured by a lint filter, and the water flow discharged from the discharge duct 24 disturbs the water flow in the washing tub, thereby improving the cleaning effect. By the way, the water level of washing tub 1 varies depending on the load.
As shown in the figure, the liquid discharged from the discharge duct 24 can be changed to four stages H1, H2, H3, and H4, for example, depending on the water pressure, there is a lot of liquid at high water levels, but less at low water levels. Become. In particular, recently, in order to reduce fabric damage, the diameter of the rotor blade has been increased to approximately 30 (cm) and the rotation speed has been increased to approximately 180 cm.
Low [rpm] and clockwise rotation for 1 to 2 seconds, 0.5 to 1
There is a washing machine that alternates left and right in short cycles, such as a pause for 1 second, a counterclockwise rotation for 1 to 2 seconds, and a pause for 0.5 to 1 second. When the water level becomes low, the amount of liquid discharged from the discharge duct 24 decreases dramatically, and almost no water comes out of the discharge duct, causing the problem that lint cannot be removed sufficiently. (c) Purpose of the invention The purpose of the invention is to enable sufficient liquid to remove thread waste discharged from the water supply channel even when the water level is low. (d) Structure of the invention The present invention narrows the area of the flow passage at the bottom of the water supply channel in the pump room to make it smaller than the upper part, thereby increasing the lift at low water levels. Allowing more water to be released,
This makes it possible to remove lint. (E) Embodiment This will be explained based on FIGS. 3 to 6. Components that are the same as the conventional example are given the same figure numbers. In the present invention, ribs 3 projecting into the water supply channel 20 from the bottom of both side walls of the water channel cover 19 for forming the water channel 20 to the center corresponding to the low water level H4.
5 and 35 are integrally molded to make the flow passage area of the lower part of the water supply channel 20 smaller than that of the upper part. In this way, the discharge pressure from the water supply channel increases, and when the water level is low, the amount of liquid discharged from the discharge duct 24 at the tip of the water supply channel can be considerably increased compared to the conventional system. Also, as the water level rises, the amount of liquid discharged from the discharge duct 24 decreases compared to the conventional one, and in the case of a high water level, there is no possibility that too much liquid will come out from the discharge duct 24 and be scattered around. . This is because only the lower part of the water supply channel 20 is constricted to suppress the increase in discharge pressure. The table below shows that the flow area of the lower part of the water supply channel has been reduced to 1/1 compared to the conventional one.
2 shows the relationship between the discharge amount from the discharge duct and each water level H1, H2, H3, and H4. As mentioned above, the dimensions, rotation speed, and reversal period of the rotor blade are approximately 30 [cm] and approximately 180 [r.
pm], 1 on the left and right alternately with a pause of 0.5 to 1 second.
It rotates for ~2 seconds, and the discharge amount here indicates the amount discharged while the rotor blade rotates only once in one direction.

【表】 この結果から明らかな如く水位が低いほど、従
来に比べて吐出量の増加の割合が大きいことがわ
かる。 (ヘ) 考案の効果 本考案によれば、送水路の下部の流路面積を上
部に比べ小さくしたことにより、低水位の場合で
も送水路先端よりかなりの量の液を放出すること
ができるので、糸屑除去作用が低下するようなこ
とがない。また、送水路の流路面積を小さくする
のに、水路カバーにリブを設けたので、強い水圧
が加わる水路カバー下部を補強することができ
る。[Table] As is clear from this result, the lower the water level, the greater the rate of increase in the discharge amount compared to the conventional method. (f) Effects of the invention According to the invention, by making the flow area of the lower part of the water supply channel smaller than the upper part, a considerable amount of liquid can be discharged from the tip of the water supply channel even when the water level is low. , there is no reduction in the lint removal effect. Furthermore, since ribs are provided on the waterway cover to reduce the flow area of the waterway, the lower part of the waterway cover, which is subject to strong water pressure, can be reinforced.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図及び第２図は従来の洗濯機を示し、第１
図は洗濯機枠内部の縦断面図、第２図は第１図
−線に基づく断面図、第３図乃至第６図は本考
案の洗濯機を示し、第３図は要部縦断面図、第４
図は第３図−線に基づく断面図、第５図は水
路カバーの縦断面図で第６図−線に基づくも
のであり、第６図は第５図矢視図である。 １……洗濯槽、６……回転翼、１２……裏羽
根、１５……ポンプ室、２０……送水路、２６…
…リントフイルター、１８……凹溝、１９……水
路カバー、３５……リブ。 Figures 1 and 2 show a conventional washing machine.
The figure is a vertical sectional view of the inside of the washing machine frame, FIG. 2 is a sectional view taken along the line shown in FIG. 1, FIGS. 3 to 6 show the washing machine of the present invention, and FIG. , 4th
The drawings are a sectional view taken along the line in FIG. 3, FIG. 5 is a longitudinal sectional view of the water channel cover taken along the line in FIG. 6, and FIG. 6 is a view taken along the arrow in FIG. 1... Washing tub, 6... Rotating blade, 12... Back blade, 15... Pump room, 20... Water supply channel, 26...
...lint filter, 18...concave groove, 19...channel cover, 35...rib.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 洗濯槽底部に設けた回転翼の裏羽根のポンプ作
用により前記洗濯槽内の液を吸引するポンプ室を
設け、洗濯槽の底部から側壁上部にかけて前記ポ
ンプ室の送水路を形成し、該送水路の先端よりリ
ントフイルターを介して液を洗濯槽内へ放水する
ようにしたものにおいて、前記送水路を洗濯槽の
底部から側壁上部にかけて形成した凹溝を水路カ
バーで覆うことによつて形成し、前記水路カバー
の下部に凹溝内へ突出して送水路の流路面積を狭
めるリブを一体成型してなる洗濯機。 A pump chamber is provided that sucks the liquid in the washing tub by the pumping action of a back blade of a rotary blade provided at the bottom of the washing tub, and a water supply channel for the pump chamber is formed from the bottom of the washing tub to the top of the side wall. The water supply channel is formed by covering a concave groove formed from the bottom of the washing tub to the top of the side wall with a water channel cover, A washing machine in which a rib is integrally molded on the lower part of the water channel cover to project into the groove and narrow the flow area of the water channel.