GB2292565A

GB2292565A - Fully automatic washing machine

Info

Publication number: GB2292565A
Application number: GB9423664A
Authority: GB
Inventors: Tetsuo Ishii; Norihiko Ishikawa; Kunio Inose; Shinichi Nakamura; Hideo Akutsu; Shinsuke Ise; Masaji Kukino; Yoshio Yoshida
Original assignee: Nihon Kentetsu Co Ltd; Mitsubishi Electric Corp
Current assignee: Nihon Kentetsu Co Ltd; Mitsubishi Electric Corp
Priority date: 1994-08-19
Filing date: 1994-11-23
Publication date: 1996-02-28
Anticipated expiration: 2014-11-23
Also published as: GB2292565B; CN1076412C; CN1126777A; HK1001165A1; KR100225329B1; GB9423664D0

Abstract

A fully automatic washing machine comprises a pulsator 3 disposed at the bottom of a vessel 4 with a ring-shaped balancer 14 at its upper part, a circulation channel 13 oriented from an under position of the pulsator 3 to an upper part of the vessel 4, the channel 13 being separated from the inside of the vessel 4, and having a discharge opening 15 at its upper end. The discharge opening 15 is at a position lower than the position of the balancer 14 and higher than the highest possible water level. Thus, the opening of the vessel 4 is not narrowed so that putting in and out of the wash is easy, and, the circulation is not reduced at low water level. There are filters 19 on the discharge openings 15 and baffles 19 enhance washing. The channels may have openings half-way up. <IMAGE>

Description

FULLY AUTOMATIC WASHING MACHINE This invention relates to a one vessel type fully automatic washing machine, especially relates to its circulation channel.

A conventional fully automatic washing machine has a structure such as one shown in Figure 11 of the accompanying drawings, which is disclosed in Published Unexamined Patent Application of Japan No. 9558 / 92 (Hei. 4). That is to say, the conventional fully automatic washing machine has a vessel 2 for holding water. which vessel 2 is disposed inside a housing 1, and a vessel 4 for washing and dehydrating disposed in the vessel 2, which vessel 4 has a Pulsator 3 at its bottom. The conventional machine also has a motor 5 disposed under the vessel 4. the rotation of which is transmitted to a washing shaft 8 through pulleys. a V-belt, a clutch mechanism 6 and a decelerating mechanism 7, and the rotation of which is also transmitted to a dehydrating shaft 9 in the vessel 4 through the pulleys, the V-belt and the clutch mechanism 6.

Furthermore, the bottom of the vessel 2 is oPened to dispose a drain pipe (not shown) which is connected to a drain hose (not shown) through a drain valve (not shown). Moreover, an opening for the flow out of washing water is formed at the bottom of the vessel 4 under the pulsator 3, and the opening is connected to an upper part of the vessel 4 through a circulation channel 13.

The pulsator 3 is provided with wings 3a for stirring washing water in the vessel 4 on the top surface of the pulsator 3, and further is provided with wings 3b on the under surface of the pulsator 3 for circulating the washing water in the vessel 4 from the bottom part of the vessel 4 to the top part of it by passing the water through the circulation channel 13.

Reference numeral 14 in the drawing designates a ringshaped balancer provided at the top part of the vessel 4.

The above circulation channel 13 is for making the washing water permeate the wash and for dissolving detergent in the water well by circulating the washing water in the vessel 4 from the bottom part of it to the top part of It. and the channel 13 is for effectively catching and collecting lints contained in the washing water by disposing a lint filter 16 at a discharge opening 15 disposed at the top of the circulation channel 13. And the circulation channel 13 is disposed at one place of the vessel 4, and the discharge opening 15 at the top of the circulation channel 13 is disposed at the balancer 14 as shown in detail in, for example. Fig. 12.

At the time of washing. the pulsator 3 rotates to stir the washing water in the vessel 4 with the wings 3a of the pulsator 3 together with rotating the wings 3b of the pulsator 3, which rotation of the wings 3b circulates the washing water by drawing up the water in the vessel 4 from the bottom of the vessel 4 in the circulation channel 13 and by flowing the water into the vessel 4 again from the discharge opening 15 at the top of the vessel 4.

Because such a conventional fully automatic washing machine is equipped with only one circulation channel 13, although the washing water is stirred by the rotating force of the wings 3b disposed on the under surface of the pulsator 3, the circulation of the washing water forms a short cycle. which makes the circulation efficiency of the water bad. and also which does not make the efficiency of catching and collecting lints good.

Besides, because the conventional fully automatic washing machine pushes the washing water up by the rotating force of the pulsator 3, in the case where the discharge opening 15 of the circulating water is disposed at the balancer 14 at the upper position of the vessel 4, the circulation amount of the circulating water becomes little in case of a low water level. in this case also. the circulation efficiency of the washing water is bad. and the efficiency of catching and collecting lints also is not good.

Furthermore, because the discharge opening 15 and the attaching and removing position of the lint filter 16 are disposed at the balancer 14 in the conventional washing machine, the lint filter 16 projects to the inside of the balancer 14, namely the inside of the opening part of the vessel 4. and consequently. the opening part is narrowed by the projection. which makes it difficult to put in or take out the wash.

There is a washing machine which is provided with a dedicated circulating pump inside the circulation channel 13 for regulating the circulation amount even in case of a low water level. but the provision of the circulating pump make the cost of the machine high.

In view of the foregoing, the present invention was made for the sake of solving the above troubles of the conventional machines.

A first object of the invention is to provide a fully automatic washing machine the opening Part of the vessel for washing and dehydrating of which is not narrowed, even if a circulation channel is disposed at the vessel, and which washing machine is easu for a user to put in or take out the wash, and further which is easy to handle.

A second object of the invention is to provide a fully automatic washing machine which does not reduce its circulation amount even in case of a low water level.

A third object of the invention is to provide a fully automatic washing machine which can prevent the short cycle, and which has the good circulation efficiency of water. and further which does not reduce the efficiency of catching and collecting lints.

A fourth object of the invention is to provide a fully automatic washing machine which can keep the easiness at the time of its fabrication in case of being equipped with a baffle.

A fifth obJect of the invention is to provide a fully automatic washing machine which can improve the capability of washing by the use of a baffle.

A sixth object of the invention is to provide a fully automatic washing machine which can prevent water spatters by the use of a baffle.

The subject matter of the fully automatic washing machine according to the first aspect of the Present invention is that in a fully automatic washing machine comprising a pulsator disposed at the bottom of a vessel for washing and dehydrating, the vessel having a ring-shaped balancer at its upper part, a circulation channel oriented from an under position of the Pulsator to an upper part of the vessel for washing and dehydrating. the channel being separated from the inside of the vessel. and a discharge opening formed at the upper end of the circulation channel. the discharge opening discharging the circulating water into the vessel for washing and dehydrating, the improvement wherein the discharge opening is disposed at a position lower than the position of the balancer and higher than the water level of the highest level of water levels to be set on the inside wall of the vessel for washing and dehydrating.

According to the fully automatic washing machine of the first aspect. the discharge opening of the circulation channel is disposed at a position lower than the position of the balancer and higher than the water level of the highest level of water levels to be set, and consequently, the position of the discharge opening is lower in comparison with the position in the case where the discharge opening is disposed at the balancer. As the result. the amount of discharged water increases and the amount of the circulating water is not so much reduced even in case of a low water level, therefore the efficiency of catching and collecting lints and the capability of washing are improved.

The subject matter of the fully automatic washing machine according to the second aspect of the invention is that plural circulation channels are respectively formed in a bodv with a vessel for washing and dehydrating.

According to the fully automatic washing machine of the second aspect, the plural discharge channels of are respectively formed in a body with the vessel for washing and dehydrating. and consequently. the amount of discharged water increases. and the efficiency of catching and collecting lints is improved, and further a short cycle can be prevented. in addition to the effects of the fully automatic washing machine according to the first aspect.

The subject matter of the fully automatic washing machine according to the third aspect of the invention is that plural circulation channels are disposed at regular intervals on a circumference of the inside wall of a vessel for washing and dehydrating.

According to the fully automatic washing machine of the third aspect. the plural circulation channels are disposed at regular intervals on a circumference of the inside wall of a vessel for washing and dehydrating, and consequently, the washing water at each area in the vessel can almost equally be circulated, and the efficiency of catching and collecting lints is improved.

and further a short cycle can be prevented, in addition to the above effects.

The subject matter of the fully automatic washing machine according to the fourth aspect of the invention is that lint filters can optionally be attached to each end of plural circulation channels.

According to the fully automatic washing machine of the fourth aspect, lint filters can optionally be attached to each end of the plural circulation channels. and consequently. by attaching lint filters to all of the circulation channels the amount of circulating water which passes the lint filters increases. and the effect of catching and collecting lints is improved. in addition to the above effects.Besides, since the discharge openings are disposed at positions lower than the position of the balancer as described above instead of disposing the discharge opening at the balancer like the conventional fully automatic washing machine, even if lint filters are attached to the positions. the lint filters do not project into the upper opening of the vessel for washing and dehydrating, and they do not disturb putting in and taking out the wash. which makes it easu to handle.

The subject matter of the fully automatic washing machine according to the fifth aspect of the invention is that all plural circulation channels are formed into the same shape.

According to the fully automatic washing machine of the fifth aspect, all plural circulation channels are formed into the same shape. and consequently. the cost of manufacturing can be reduced, in addition to the above effects.

The subject matter of the fully automatic washing machine according to the sixth aspect of the invention is that plural circulation channels are formed, and that a lint filter is attached to a position where the discharge openings of each circulation channels are collected.

According to the fully automatic washing machine of the sixth aspect. plural circulation channels are formed. and a lint filter is attached to the position where the discharge openings of each circulation channels are collected. and consequently, the lint filter to be cleaned is attached to only one place. which makes it easy to clean it.

The subject matter of the fully automatic washing machine according to the seventh aspect of the invention is that a circulation channel has another discharge opening at a halfway position of its height.

According to the fully automatic washing machine of the seventh asPect, the circulation channel has another discharge opening at a halfway position of its height. and consequently. the amount of discharged water is increased, the efficiency of catching and collecting lints in the case of a low water level can be improved as well.

The subject matter of the fully automatic washing machine according to the eighth aspect of the invention Is that the area of a discharge opening which is formed at a halfway position of the height of a circulation channel is proportioned to the ratio of the height of the position of the discharge opening.

According to the fully automatic washing machine of the eighth aspect. the area of a discharge opening which is formed at a halfway position of the height of a circulation channel is proportioned to the ratio of the height of the position of the discharge opening. and consequently. the values of the resistance at the upper and lower discharge openings of the circulation channel are equal, therefore the amounts of washing water discharged from each discharge opening are equal.

The subject matter of the fully automatic washing machine according to the ninth aspect of the invention is that a circulation channel is equipped with a baffle on an outside face of the circulation channel. which baffle is constructed in a body with the circulation channel and projects into the inside of the vessel for washing and dehYdrating.

According to the fully automatic washing machine of the ninth aspect. the circulation channel is equipped with a baffle on an outside face of the circulation channel. which baffle is constructed in a body with the circulation channel and projects into the inside of the vessel for washing and dehydrating. and consequently, the cost of manufacturing can be reduced. and its fabrication is made to be easy. in addition to the above effects.

The subject matter of the fully automatic washing machine according to the tenth aspect of the invention is that a baffle is shaped so as to grow gradually higher from an upper part of a vessel for washing and dehydrating to a lowermost part of it with gradually widening.

According to the fully automatic washing machine of the tenth aspect, the baffle is shaped so as to grow gradually higher from an upper part of the vessel for washing and dehydrating to the lowermost Part of it with gradually widening, and consequently, for example. if the vessel for washing and dehydrating rotates to the counter direction to the rotation direction of a pulsator at the time of washing. the suppressing force to the horizontal rotation is impressed to the wash at circumferential parts of the vessel, which produces the effect of washing by rubbing to the wash. therefore the capability of washing is improved and water sPatters can be prevented also. in addition to the above effects.

The subject matter of the fully automatic washing machine according to the eleventh aspect of the invention is that a baffle is disposed at a lower position than the position of the highest level of washing water on the inside wall of a vessel for washing and dehydrating.

According to the fully automatic washing machine of the eleventh aspect, the baffle is disposed at a lower position than the Position of the highest level of washing water on the inside wall of the vessel for washing and dehydrating. and consequently.

the baffle is always positioned under the surface of the water in the time of a high water level, therefore water spatters can be prevented. in addition to the above effects.

The subject matter of the fully automatic washing machine according to the twelfth aspect of the invention is that a projection shaped like a triangle pole and projecting to the inside of a vessel for washing and dehydrating to the extent of a distance shorter than that of the above baffle is vertically disposed between dehydration holes on the circumferential side face of the vessel.

According to the fully automatic washing machine of the twelfth aspect. the projection shaped like a triangle pole and vertically disposed between dehydration holes on the circumferential side face of the vessel operates with the baffle as a washboard at the time of washing to further improve the efficiency of washing, and the water separated from the wash flows along the surface of the triangle pole to be lead to the dehydration holes at the time of dehydrating, and consequently, the efficiency of dehydration also is improved, in addition to the above effects.

The invention will be further described by way of non-limitative example with reference to the accompanying drawings, in which: Fig. 1 is an explanatory view showing the construction of an embodiment of the fully automatic washing machine of the present invention; Fig. 2 is an enlarged partial view showing an embodiment of a discharge oPening part of the fully automatic washing machine of the invent ion; Fig. 3 is an enlarged perspective view showing an embodiment of a lint filter of the fully automatic washing machine of the invent ion; Fig. 4 is an enlarged cross sectional view showing the embodiment in the state of being equipped with a lint filter attached to a discharge opening of the fully automatic washing machine of the invent ion;; Fig. 5 is an enlarged perspective view showing an embodiment of a circulation channel cover of the fully automatic washing machine of the invention; Fig. 6 is a diagram of curved lines showing the comparison of the amounts of circulating water of a fully automatic washing machine of the invention and the amounts of circulating water of a conventional fully automatic washing machine; Fig. 7 is a graph showing the comparison of the amounts of caught and collected lints of a fully automatic washing machine of the invention and the amounts of caught and collected lints of a conventional fully automatic washing machine; Fig. 8 is a top plan view showing the relation of a discharge opening part and a connecting pipe of another embodiment of the fully automatic washing machine of the Invention;; Fig. 9 is an explanatory view showing the construction of further other embodiment of the fully automatic washing machine of the invention; Fig. 10 is an explanatory view showing the vessel of further other embodiment of the fully automatic washing machine of the invent ion; Fig. 11 is an explanatory view showing the construction of a conventional fully automatic washing machine; and Fig. 12 is an explanatory view showing the circulation channel of the conventional fully automatic washing machine.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described In detail with referring to the accompanying drawings.

EMBODIMENT 1.

Fig. 1 is an explanatory view showing an embodiment of the fully automatic washing machine of the present invention. The whole construction of the washing machine is the same as the one described above. Accordingly, the detailed description about it will be omitted here, excepting that. in this drawing. reference numeral 10 designates a drain pipe which opens at the lowermost part of the vessel 2 for holding water. reference numeral 11 designates a drain valve. reference numeral 12 designates a drain hose. and the drain pipe 10 is connected to the drain hose 12 through the drain valve 11.

Although the full automatic washing machine of the invention also forms at least one circulation channel 13 between an under part of the pulsator 3 which is disposed at the lowermost part of the vessel 4 for washing and dehydrating and an upper part of the vessel 4. in the present invention stainless steel is used as the material of the vessel 4, and the circulation channel 13 is formed by swelling the inside wali of the vessel 4 into the opening of the vessel 4 by fixing a circulation channel cover 18 made from plastic to the inside wall of the vessel 4 in a body with the vessel 4 with screws and the like in a state like a vertical conduit. The discharge opening 15 at the upper end of the circulation channel 13 is positioned below the balancer 14 and above the water level in the case where a set water level is a high level.

And, plural circulation channels 13 of the same shapes which channels 13 are respectively formed as described above are disposed at regular intervals on a circumference of the inside wall of the vessel 4. three circulation channels 13 are disposed at regular intervals in this embodiment, and lint filters 16 made of baggy shaped nets can optionally be attached to the discharge openings 15 of each end of respective circulation channels 13.

That is to say, the discharge openings 15 are shaped as inverted boxes as shown in Fig. 2. and coupling parts 21 are formed at the opened side faces of pairs of side faces of the boxes for inserting lint filters 16 which are composed by attaching nets to square frames as shown in Fig. 3 by sliding the frames inside the coupling parts 15.

Besides, Fig. 4 is a cross sectional view showing the state of the lint filter 16 attached to the discharge opening 15.

Moreover, baffles 19 projecting to the inside of the vessel 4 are respectively formed in a bodu on the outside face of each circulation channel cover 18 forming each circulation channel 13 as shown in Fig. 5. The baffles 19 are shaped so as to grow gradually higher from upper parts of the vessel 4 to the lowermost parts of it with gradually widening. and the top ends of the baffles 19 are disposed at lower positions than the position of the highest level of washing water on the inside wall of the vessel 4.

Next. the operation will be described thereof. In a washing process or a rinsing process. the pulsator 3 rotates to generate water currents in washing water or rinsing water in the vessel 4 by the rotation of the wings 3a, and the wash is stirred by the rotation force. At the same time, the washing water drawn up in the circulation channels 13 from inflow openings disposed under the pulsator 3 by the rotation of the wings 3 driven by the rotation force of the pulsator 3 passes the lint filters 16 to be discharged into the vessel 4 from the discharge openings 15 again.

The washing water in the vessel 4 is thus circulated through the circulation channels 13, which makes the washing water permeate the wash well together with making lints produced from the wash and contained in the washing water be caught and collected by the lint filters 16 efficiently.

Because the discharge openings 15 are disposed at positions lower than the position of the balancer 14 and higher than the water level of the highest level of the water levels to be set in the present embodiment, the positions of the discharge openings 15 are lower in comparison with the conventional discharge opening 15 disposed at the balancer 14. and consequently. the amounts of discharged water increase as the curved lines shown in Fig. 6.

therefore the amounts of circulating water do not reduced so much even in the cases of lower water levels. The experimental results shown in Fig. 6 are obtained in the case where the positions of the discharge openings are lower by 8 cm in comparison with the positions in the case where the discharge opening 15 is disposed at the balancer 14. The black points denote the data in the case where the discharge opening 15 is conventionally disposed at the balancer 14, and the white points denote the data in case of the present embodiment in this diagram. And they designate the amounts of circulating water to each set water level.

Furthermore, the embodiment is equipped with plural circulation channels 13 having lint filters 16 respectively, which makes the amount of discharged water increase, and makes the efficiency of catching and collecting lints be improved. and further makes the short cycle be able to be prevented. Fig. 7 is a graph showing the values indicating the capacity of catching and collecting lints in both cases where the lint filter 16 is suPplied at one place and where the lint filters 16 are supplied at three places.The conditions of washing in the exPeriments were that the vessel 4 for washing and dehydrating was not fixed to be free, and the water flow in the vessel 4 was controlled to be constant. in addition to the following conditions: (1) load: 4.2 Kg (70 % of the rated value; 50 pieces of 90 cm cloth in Japanese Industrial Standard) (2) washing without detergent: 10 minutes; the amount of water: 58 litters (3) two times of rinsing with holding washing water without dehydrating respectively for 2 minutes (4) lints: 3g (100 % of cotton; the length of basting yearn: 1 cm) (5) the number of times: 1 (6) controlling: turning on electricity for 1.0 second.

stopping for 0.5 seconds; the number of rotations: 140 r pm (7) baffles: three parallel types of 20 mm by 235 mm.

As the result. the amount of the lints caught and collected by the lint filters 16 disposed at three places were by far more than the amount of lints caught and collected by the lint filter 16 disposed only one place.

As described above, according to the fully automatic washing machine of the present invention, in the first place. the discharge openings of the circulation channels are disposed at positions lower than the position of the balancer and higher than the water level of the highest level of the levels to be set. and consequently, the position of the discharge opening is lower in comparison with the position in the case where the discharge oPening is disposed at the balancer. As the result. the amount of discharged water increases and the amount of the circulating water Is not so much reduced even in the cases of lower water levels.

therefore the efficiency of catching and collecting lints and the caPability of washing are improved.

In the second place. the plural discharge channels are respectively formed in a body with the vessel for washing and dehydrating. and consequently, the amount of discharging water increases, the efficiency of catching and collecting lints is improved. and a short cycle can be prevented.

In the third place. the plural circulation channels are disposed at regular intervals on a circumference of the inside wall of the vessel for washing and dehydrating. and consequently.

the washing water at each area in the vessel can almost equally be circulated. the efficiency of catching and collecting lints is improved. and a short cycle can be prevented.

In the fourth place. lint filters can optionally be attached to each end of the plural circulation channels. and consequently. by attaching lint filters to all of the circulation channels the amount of circulating water which passes the lint filters increases. and the effect of catching and collecting lints is improved. Besides, since the discharge openings are disposed at positions lower than the position of the balancer as described above instead of disposing the discharge opening at the balancer like the conventional fully automatic washing machine, even if lint filters are attached to the positions. the lint filters do not project into the upper opening of the vessel for washing and dehydrating. and they do not disturb putting in and taking out the wash. which makes it easy to handle.

In the fifth place, all plural circulation channels are formed into the same shape, which makes the cost of manufacturing be able to be reduced.

In the sixth place. the plural circulation channels 13 are equipped with the baffles 19 in a body respectively in the states of projecting the baffles 19 from the circulation channels 13, which makes the cost of manufacturing be able to be reduce. and makes the fabrication of the fully automatic washing machine easy.

And, the baffles 19 are shaped so as to grow gradually higher from the upper part of the vessel 4 for washing and dehydrating to the lowermost part of it with gradually widening, and consequently. if the vessel 4 rotates to the counter direction to the rotation direction of the pulsator 3. for example. by making the rotation of the vessel 4 be free at the time of washing. the suppressing force to the horizontal rotation is impressed to the wash at circumferential parts of the vessel 4, which Produces the effect of washing by rubbing to the wash. therefore the capability of washing is improved and water spatters can be prevented also.

In the seventh place, the baffles 19 are disposed at a lower position than the position of the highest level of washing water on the inside wall of the vessel 4 for washing and dehydrating, which makes the baffles 19 be always positioned under the surface of the water at the time of the high water level, and makes water spatters be able to be prevented.

EMBODIMENT 2.

The embodiment 2 is an embodiment where the discharge openings 15 of each of the plural circulation channels 13 are collected at a place with a connecting pipe 22 so that a lint filter 16 is attached to the place as shown in Fig. 8. Because lints are caught and collected at one place in this embodiment.

the cleaning of the lint filter 16 becomes easy.

EMBODIMENT 3.

The embodiment 3 is an embodiment where the circulation channels 13 have other discharge openings 17. where lint filters 16 can optionally be attached. at a halfway position of their heights.

Because the disposed positions of these other discharge openings 17 is at halfway positions of the heights of the circulation channels 13, the areas of them are set to be 1 / 2 of the areas of the discharge openings 15.

The positions to dispose these other discharge openings 17 are not limited to the halfway Positions, but they may be plural positions located at a little bit higher places than the water levels to be set, i.e. a high level, a middle level, a low level and a little level, respectively. In this case, the areas of the discharge openings are determined in accordance with the ratios of their heights. For example if the discharge openings 17 are disposed at the position of 2 / 3 of the heights of the circulation channels 13, the areas of the discharge openings 17 are made to be 2 / 3 of the areas of the discharge openings 15.

The other discharge openings 17 are thus formed at the halfway positions of the heights of the circulation channels 13, which makes the amount of discharged water be possible to increase, and a part of the circulating water is discharged from the discharge openings 17 to make the rotation of the wash better together with further urging the unique stirring of washing water.

Besides, the areas of the discharge openings 17 are determined to be proportioned to the ratios of the heights of the positions of the discharge openings 17, which makes the upper and lower discharge openings 15 and 17 discharge almost the same amount of washing water respectively.

Furthermore, attaching lint filters 16 to the discharge openings 17 makes the efficiency of catching and collecting lints in the case of a low water level be able to be improved as well.

EMBODIMENT 4.

Fig. 10 shows the principal part of the embodiment 4 of the

Claims

present invent ion. The embodiment 4 is constructed so that projecting parts 20 shaped like triangle Poles and projecting to the inside of the vessel 4 for washing and dehydrating are vertically formed by press working between dehydration holes 23 on the circumferential side face of the vessel 4. The projection distances of the projecting parts 20 to the inside of the opening of the vessel 4 are shorter than those of the baffles 19. The projecting parts 20 and the baffles 19 operate as a washboard at the time of washing to further improve the efficiency of washing, and the water separated from the wash flows along the surface of the triangle pole to be lead to the dehydration holes 23 at the time of dehydrating, consequently the efficiency of dehydration is also improved. CLAIMS

1. In a fully automatic washing machine comprising a pulsator disposed at the bottom of a vessel for washing and dehydrating, said vessel having a ring-shaped balancer at its upper part; a circulation channel oriented from an under position of said pulsator to an upper Part of said vessel for washing and dehydrating, said channel being separated from the inside of said vessel: and a discharge opening formed at the upper end of said circulation channel, said discharge opening discharging the circulating water into said vessel for washing and dehydrating; the improvement wherein said discharge opening is disposed at a position lower than the position of said balancer and higher than the water level of the highest level of water levels to be set on the inside wall of said vessel for washing and dehydrating.

2. The fully automatic washing machine according to claim 1 wherein plural circulation channels are respectively formed in a body with said vessel for washing and dehydrating.

3. The fully automatic washing machine according to claim 1 or 2 wherein said plural circulation channels are disposed at regular intervals on a circumference of the inside wall of said vessel for washing and dehydrating.

4. The fully automatic washing machine according to claim 2 or 3 wherein lint filters can optionally be attached to each end of said plural circulation channels.

5. The fully automatic washing machine according to any one of the claims 2 to 4 wherein all of said plural circulation channels are formed into the same shape.

6. The fully automatic washing machine according to any one of the claims 1 to 3 or claim 5 wherein said plural circulation channels are formed. and a lint filter is attached to a position where said discharge openings of each circulation channels are collected.

7. The fully automatic washing machine according to any one of the claims 1 to 6 wherein said circulation channel has another discharge opening at a halfway position of its height.

8. The fully automatic washing machine according to claim 7 wherein the area of said discharge opening formed at a halfway position of the height of said circulation channel is proportioned to the ratio of the height of the position of said discharge opening.

9. The fully automatic washing machine according to anu one of the claims 1 to 7 wherein said circulation channel is equipped with a baffle on an outside face of said circulation channel. said baffle being constructed in a body with said circulation channel and projecting into the inside of said vessel for washing and dehydrating.

10. The fully automatic washing machine according to claim 9 wherein said baffle is shaped so as to grow gradually higher from an upper part of said vessel for washing and dehydrating to a lowermost part of said vessel with gradually widening.

11. The fully automatic washing machine according to claim 9 or 10 wherein said baffle is disposed at a lower position than the position of the highest level of washing water on the inside wall of said vessel for washing and dehydrating.

12. The fully automatic washing machine according to anu one of the claims 9 to 11 which further comprises a projection shaped like a triangle pole and projecting to the inside of said vessel for washing and dehydrating to the extent of a distance shorter than that of said baffle, said projection being vertically disposed between dehydration holes on the circumferential side face of said vessel.

13. A fully automatic washing machine constructed and arranged to operate substantially as hereinbefore described with reference to and as illustrated in Figures 1 to 10 of the accompanying drawings.