JPH07185188A - Washing machine - Google Patents

Abstract

PURPOSE:To provide a washing machine which can sufficiently wash and rinse the washing in a short time. CONSTITUTION:The inner face of a washing and dewatering tub 20 is made in the shape of or like a spherical surface except for the shape around an opening part 20a at the top. The washing water in the washing and dewatering tub 20 is forced to flow in the circumferential and up-and-down directions by the turning of a stirring blade 4. The amount of rotational flow of the washing water does not largely change but the amount of up-and-down flow increases in comparison with a conventional cylindrical washing and dewatering tub, because of the shape effect of the washing and dewatering tub. Consequently, the amount of twisting and untwisting of the washing increases and the washing and rinsing can sufficiently be performed in a short time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing / dehydrating tank for continuously performing washing, rinsing and dehydration, or a washing machine equipped with a washing tub for washing and rinsing.

[0002]

2. Description of the Related Art FIG. 5 is a sectional view showing a conventional so-called fully automatic washing machine capable of continuously performing washing, rinsing and dehydration. In the figure, reference numeral 1 is a washing / dehydrating tub that accommodates laundry therein and performs three operations of washing, rinsing, and dewatering. The washing / dehydrating tub 1 has a so-called shell-like or bell-like shape in which the bottom has a substantially hemispherical shape and the top has a cylindrical shape. And this washing and dewatering tank 1
Has an opening for loading and unloading laundry and has a plurality of openings 1a on its side. Reference numeral 2 is a water storage tank which is provided outside the washing / dehydrating tank 1 so as to cover the washing / dehydrating tank 1 and whose lower portion is supported on the holding block 3.

Karaman bar stirring blade 4 is a rod-shaped stirring blade provided at the bottom of the washing / dehydrating tank 1 so as to project upward, and has a function of preventing entanglement of laundry. 1 is a rotary shaft that penetrates 1 and the holding block 3 and is connected to the Karaman rod stirring blade 4. The lower side of the rotary shaft 5 is connected to a drive shaft of a rotary motor 6 arranged below the holding block 3. Reference numeral 7 denotes a rotary cylinder which is provided so as to penetrate the holding block 3 so as to cover the rotary shaft 5 and whose upper end is fixed to the lower part of the washing / dehydrating tub 1, and 8 is arranged between the holding block 3 and the rotary motor 6 and has a rotary cylinder. An electromagnetic clutch brake that is connected to the lower side of 7 and that acts as a clutch with the rotating shaft 5 that penetrates the inside, 9 is a base that supports the holding block 3, the rotary motor 6, etc., 10 is a water injection port , 11 are drainage ports, and 12, 13 are water seals for preventing water leakage.

Next, the operation of this fully automatic washing machine will be described. After the laundry and the detergent are put into the washing / dehydrating tank 1, the start button (not shown) is pressed to wash water into the water tank 2 through the water inlet 10 to a predetermined amount. Subsequently, the rotary motor 6 is operated, and the Karaman rod stirring blade 4 is rotated via the rotary shaft 5. As a result, the wash water is given a rotational flow and a vertical flow, and the flow energy and the action of the detergent remove stains on the laundry.

When the Karaman rod stirring blade 4 is rotated for a predetermined time, the rotary motor 6 is stopped, the drain port 11 is opened, the dirty washing water is drained, and then the drain port 11 is closed.
New washing water is poured into the water tank 2 through the water inlet 10 to a predetermined amount. Next, the rotary motor 6 is operated, the Karaman rod stirring blade 4 is again rotated, and rinsing for the required time is performed. And when the first rinse work is completed,
The rotary motor 6 is stopped and drainage is performed again. After such a rinsing operation is repeated two to three times, the electromagnetic clutch brake 8 is left open with the drain port 11 open.
Is operated, and the rotary shaft 5 and the rotary cylinder 7 are operated so as to rotate integrally. Then, with the drainage port 11 open, the rotary motor 6 operates and the Karaman rod stirring blade 4 is operated for a predetermined time.
And the washing and dewatering tub 1 are rotated in synchronization with each other, and the laundry is centrifugally dewatered through the opening 1a for a predetermined time.

FIG. 6 is a sectional view showing a washing tub side of a conventional so-called two-tub washing machine. In the figure, reference numeral 14 is a washing tub for accommodating laundry therein and performing washing and rinsing operations. The washing tub 14 has the same shape as the washing / dehydrating tub 1, and the lower part thereof is fixed to the holding block 3. The Karaman bar stirring blade 4 is arranged at the bottom of the washing tub 14 so as to project upward, and the rotary shaft 5 connected to the drive shaft of the rotary motor 6 penetrates through the washing tub 14 and It is connected to the stirring blade 4. In addition, except for the water tank 2, the electromagnetic clutch brake 8 and the like, the other configurations are the same as those of the washing machine shown in FIG.

In this washing machine, after putting laundry, washing water and detergent in the washing tub 14, an operation switch (not shown)
By pressing, the rotary motor 6 operates, and the Karaman rod stirring blade 4 is rotated via the rotary shaft 5. Then, the washing water is given a rotational flow and a vertical flow, and the flow energy and the action of the detergent remove stains on the laundry.
When the washing work is performed for a predetermined time, the drain port 1
After the water is drained through 1, new washing water is injected through the water injection port 10 and the like.
Rinsing work is performed once. When the rinsing work is completed, the laundry is put into another dehydrating tank for dehydration.

[0008]

In the conventional washing machine described above, since the washing / dehydrating tub 1 and the washing tub 14 are in the shape of a shell or a bell, the washing water does not flow up and down and is mainly used. Rotational flow around the cylinder center line M will be performed. Therefore, the laundry mainly rotates and flows in the washing / dehydrating tub 1 and the washing tub 14. Therefore, in such a washing machine, the vertical flow that promotes the complicated twisting action of the laundry and the washing water in the vertical and horizontal directions is small, so that the so-called number of times the laundry is loosened is reduced and dirt is less likely to be removed. At the same time, there is a problem that rinsing takes time and washing time becomes long.

Incidentally, as shown in FIG. 7 and FIG.
Instead of the Karaman rod stirring blade 4, a general chrysanthemum-shaped stirring blade 1
The washing machine equipped with No. 5 had the same problem.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a washing machine capable of sufficiently washing and rinsing laundry in a short time. It is a thing.

[0011]

SUMMARY OF THE INVENTION A first invention of the present invention is a washing machine equipped with a stirring blade for washing water in a washing / dehydrating tank for washing, rinsing and dehydrating, wherein Except around the upper opening, the shape is spherical or near spherical.

A second aspect of the present invention is a washing machine provided with a stirring blade for washing water in a washing tub for washing and rinsing, wherein the inner shape of the washing tub is the same except for the opening around the upper part.
That is, the spherical shape or the shape close to the spherical surface is used.

A third invention of the present invention is the first or second invention.
In the case of the invention, the stirring blade is a rod-shaped stirring blade having a function of preventing the laundry from being entangled.

[0014]

According to the first aspect of the present invention, in the case of washing and rinsing, the washing water rotates and flows around the central axis in the vertical direction of the washing / dehydrating tank by the rotation of the stirring blade, and also in the vertical direction of the washing / dehydrating tank. Flows up and down. In this case, since the shape of the inner surface of the washing / dehydrating tub is formed into a spherical shape except around the upper opening, the washing water in the washing / dehydrating tub easily moves along the spherical inner surface of the washing / dehydrating tub. It will be able to flow up and down. That is, the washing water in the washing / dehydrating tank flows up and down more than the washing water in the washing / dehydrating tank having a mere cylindrical shape, which causes more kink and loosening in the laundry. .

In the second invention of the present invention, the inner surface shape of the washing / dehydrating tub for washing, rinsing and dehydrating is made spherical in the first invention, whereas the inner surface shape of the washing tub for washing and rinsing is made spherical. This is the case when it is spherical. Therefore, the operation is the same as that of the first invention.

In the third invention of the present invention, in the case of the first or second invention, since the stirring blade is a rod-shaped stirring blade having a function of preventing the laundry from being entangled with the laundry, Entanglement is effectively prevented.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. FIG. 1 is a sectional view showing a fully automatic washing machine according to an embodiment of the first and third aspects of the invention. In addition,
The same or corresponding parts as those of the washing machine shown in FIG. 5 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 20 is a washing / dehydrating tank for accommodating laundry therein and performing three operations of washing, rinsing and dewatering. This washing / dehydrating tub 20 has an overall inner surface shape that is spherical at the upper, middle and bottom portions except that the opening 20a in the upper portion for loading and unloading laundry is slightly cylindrical. A plurality of openings 20b for dehydration are formed in the middle and bottom of the washing / dehydrating tub 20. The rest of the configuration is the same as that of the washing machine shown in FIG.

Next, the operation of the washing machine will be described focusing on the operation of the washing / dehydrating tub 20. After the laundry and the detergent are put into the washing / dehydrating tub 20, the start button is pressed to pour the washing water into the water storage tank 2 up to a predetermined amount, and then the rotary motor 6 is operated. As a result, the Karaman rod stirring blade 4 is rotated, and a rotational flow and a vertical flow are imparted to the wash water, and the flow energy and the action of the detergent perform a washing operation to remove stains on the laundry.

In this case, the washing water has a component force that rises along the spherical shape on the bottom side of the washing / dehydrating tub 20. Then, the wash water rises along the spherical shape by this component force. At this time, since the inner surface of the washing / dehydrating tub 20 has a spherical shape as a whole, the washing water is washed by the washing / dehydrating tub 20.
Ascends smoothly along the spherical surface from the bottom side of the. And
On the upper side of the washing / dehydrating tub 20, a component force that descends along the spherical shape is generated. Then, the wash water is lowered from the upper side to the bottom side by this component force. For this reason, the washing water in the washing / dehydrating tank 20 will have more vertical flow than in the case of the conventional shell-shaped or bell-shaped washing / dewatering tank 1.

Also in this washing / dehydrating tub 20, the rotational flow of the washing water around the upper and lower central axes L of the washing / dehydrating tub 20 is almost the same as in the conventional shell-shaped or bell-shaped washing / dehydrating tub 1. It happens without change. Therefore, the washing water in the washing / dehydrating tub 20 has a complicated flow due to the vertical flow and the rotational flow, which causes a lot of kinks and loosening of the laundry. Therefore, in this washing machine, the laundry can be sufficiently cleaned in a short time.

After the washing work is finished, the drainage is performed and the rinsing work is performed 2-3 times. Even in this case, the washing water in the washing / dehydrating tank 20 has a larger vertical flow. As a result, the laundry is sufficiently rinsed in a short time. Then, after the rinsing work is completed, the washing / dehydrating tub 20 is rotated in synchronization with the Karaman rod agitating blade 4, and the laundry is dewatered.

As shown in FIG. 2, the same effect can be obtained in a washing machine in which chrysanthemum-shaped stirring blades 15 are attached instead of the Karaman bar stirring blades 4.

Example 2. FIG. 3 is a cross-sectional view showing the vicinity of the washing tub of the two-tub washing machine according to the second and third embodiments of the present invention. The same parts as those of the washing machine shown in FIG. 6 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 21 denotes a washing tub which accommodates laundry therein and performs washing and rinsing operations. This washing tub 21 has an opening 21 at the top for loading and unloading laundry.
The inner shape of the whole is spherical in the upper portion, the intermediate portion, and the bottom portion, except that the periphery of a is slightly cylindrical. The other structure is the same as that of the washing machine shown in FIG.

That is, also in this washing machine, since the inner shape of the washing tub 21 is spherical, the washing water in the washing tub 21 is lower than that of the conventional shell-shaped or bell-shaped washing tub 14. A lot of flow occurs. Also in this washing machine, the washing water is almost the same as the conventional shell-shaped or bell-shaped washing tub 14 in the washing water.
Rotational flow occurs around the central axis L above and below. Therefore, also in this washing machine, the same effect as that of the washing machine of the first embodiment can be obtained.

As shown in FIG. 4, a washing machine having chrysanthemum-shaped stirring blades 15 instead of the Karaman bar stirring blades 4 can also obtain the same effect.

Further, in the washing machines in the first and second embodiments, the inner surface shape of the washing / dehydrating tub 20 and the washing tub 21 is spherical, but the spherical shape is not limited to the spherical shape, and a sphere capable of sufficiently flowing wash water up and down. Any shape may be used as long as it has a shape close to.

[0029]

Since the present invention is constituted as described above, it has the following effects.

According to the first aspect of the present invention, in a washing machine equipped with a stirring blade for washing water in a washing / dehydrating tank for washing, rinsing, and dewatering, the shape of the inner surface of the washing / dehydrating tank is defined by the upper opening. Except for the surroundings, it has a spherical shape or a shape close to a spherical surface, so it is possible to increase the vertical flow of washing water,
It becomes possible to sufficiently wash and rinse laundry in a short time.

According to a second aspect of the present invention, in a washing machine provided with a stirring blade for washing water in a washing tub for washing and rinsing, the shape of the inner surface of the washing tub except for the opening around the upper part is excluded. Since it has a spherical shape or a shape close to a spherical surface, it is possible to increase the up-and-down flow of the washing water, and it is possible to sufficiently wash and rinse the laundry in a short time.

According to the third invention of the present invention, in the case of the first or second invention, the stirring blade is a rod-shaped stirring blade having a function of preventing the laundry from being entangled. Entanglement between laundry items during washing and rinsing is effectively prevented.

[Brief description of drawings]

FIG. 1 is a sectional view showing a washing machine according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a washing machine according to a modified example of the first embodiment.

FIG. 3 is a sectional view showing a washing machine according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing a washing machine according to a modified example of the second embodiment.

FIG. 5 is a cross-sectional view showing a first conventional washing machine.

FIG. 6 is a sectional view showing a second conventional washing machine.

FIG. 7 is a cross-sectional view showing a third conventional washing machine.

FIG. 8 is a sectional view showing a fourth conventional washing machine.

[Explanation of symbols]

 4 Karaman bar stirring blade (bar-shaped stirring blade) 15 Chrysanthemum-shaped stirring blade (stirring blade) 20 Washing / dehydrating tank 20a Opening 21 Washing tank 21a Opening

Claims (3)

[Claims] 1. A washing machine provided with a stirring blade for washing water in a washing / dehydrating tank for washing, rinsing, and dewatering, wherein the inner shape of the washing / dehydrating tank is spherical except for the upper opening. Alternatively, a washing machine having a shape close to a spherical surface. 2. A washing machine having washing water stirring blades in a washing tub for washing and rinsing, wherein the inner shape of the washing tub is spherical or close to spherical except for the opening around the upper part. A washing machine characterized by its shape. 3. The washing machine according to claim 1, wherein the stirring blade is a rod-shaped stirring blade having a function of preventing the laundry from being entangled.