CN1219928C - Washing machine - Google Patents

Abstract

The present invention relates to a washing machine, which is capable of forcibly circulating water from the lower portion of a washing tub to the upper portion of the washing tub, thereby enabling circulation washing of the laundry. The washing machine includes a casing, a washing tub, an arrangement for holding the washing tub in the casing and an arrangement for forcibly circulating washing water. The washing tub is mounted in the casing. The holding arrangement serves to allow the washing tub to be positioned to be inclined at a predetermined angle with regard to a vertical axis. The water circulating arrangement forcibly circulates washing water from a bottom of the washing tub to a top of the washing tub and is extended from the bottom of the washing tub to the top of the washing tub.

Description

washing machine

The present invention relates to a washing machine for washing clothes, and more particularly, to a washing machine capable of forcibly circulating water from a bottom of a washing tub to an upper part of the washing tub, thereby enabling cycle washing of clothes.

Fig. 14 is a partial sectional view showing the internal structure of a conventional rotary washing machine with an inner tub.

As shown in the figure, the washing tub of a typical washing machine is directly connected with the motor. The washing machine includes a casing 10, a washing tub 20 installed in the casing 10 for washing clothes, and four washing tubs for hanging in the casing 10. The washing tub 20 and the suspension rod 30 for damping the vibration of the washing tub 20, and a driving motor 40 installed under the washing tub 20 for rotating an inner tub (to be described) of the washing tub 20.

The washing tub 20 is suspended in the casing 10 by a suspension rod 30 , and the washing tub includes an outer tub 22 containing washing water, and an inner tub 23 connected with a driving motor 40 and driven to rotate by the driving motor 40 .

A drain pipe 26 and a drain valve 27 for discharging laundry water are arranged below one side of the outer tub 22 . An agitator 25 for improving washing efficiency is arranged at the bottom of the inner tub 23 .

Therefore, in the washing tub 20 , the washing process is carried out as follows: the inner tub 23 is rotated by the driving motor 40 , and the outer tub 22 is suspended in the casing 10 by the suspension rod 30 .

The operation of the conventional washing machine is explained below.

First, the user opens the door 11 of the housing 10, and the washing machine starts to work while the clothes and detergent are put into the inner tub 23, and the washing water is supplied to the washing tub 20 and rises to a predetermined water level in the outer tub 22 and the inner tub 23. Subsequently, the driving motor 40 works to drive the agitator 25 and the inner barrel 23 to rotate, and the washing process starts.

After the washing process starts for a period of time, the drive motor stops working, the drain valve 27 is opened and the washing water is discharged to the outside through the drain pipe 26 .

When the draining is finished, water is resupplied to the washing tub 20 and rises to a predetermined water level in the washing tub 20, followed by a rinsing process. The rinsing process includes two or three rounds of rinsing. The rinsing process is similar to the washing process, except that the time period during which the driving motor 40 works is relatively short.

After washing and rinsing are completed, a dehydration process is performed in which only the inner tub 23 is rotated rapidly to remove moisture from the clothes. During the dehydration process, the centrifugal force generated by the rapid rotation of the inner tub 23 is used to discharge the moisture contained in the clothes into the outer tub 22 through the micropores on the inner tub 23 , and then the water entering the outer tub 22 is discharged to the outside through the drain pipe 26 .

However, in a conventional washing machine, laundry is washed in such a manner that a vertically disposed wash tub 20 rotates forward and reverse. As a result, the laundry gets tangled with each other due to the symmetrical movement of the laundry. In addition, since the secondary water flow generated in the inner tub 23 using the agitator 25 is simple, the laundry cannot be uniformly washed. Therefore, the washing performance of the washing machine deteriorates.

In addition, since the rinsing process requires that the inner tub 23 must be filled with a large amount of water to a sufficiently high water level, not only a large amount of water is required, but also a longer water supply time period and a longer drain time period are required, thereby deteriorating the washing efficiency and prolonging the entire washing time period. .

And, since there is no measure for collecting the lint and fuzz separated from the clothes, the lint and fuzz that come off during the washing of the clothes cannot be removed from the clothes, which increases the limitation on the washing performance of the washing machine.

Therefore, in view of the above-mentioned problems existing in the prior art, an object of the present invention is to provide a washing machine capable of complicating the flow of washing water in such a manner that its washing tub is inclined by a predetermined amount relative to the vertical axis. angle, which prevents tangling of clothes and improves washing performance of the washing machine.

Another object of the present invention is to provide such a washing machine, which can carry out the washing and rinsing process, while the water in the lower part of the inner tub can rise to the upper part of the inner tub and fall back to the lower part, so that the washing and rinsing process requires less water and shorten the entire wash cycle.

Yet another object of the present invention is to provide such a washing machine, which is provided with a lint collecting device on the circulation pipe or below the washing tub, thereby easily removing foreign matter such as lint and fluff, and automatically removing the foreign matter during the draining operation. discharge to the outside.

To achieve the above object, the present invention provides a washing machine, comprising: a housing; a washing tub installed in the housing; a device for maintaining the washing tub in the housing so as to allow the washing tub to incline at a predetermined angle relative to a vertical axis; And a device for forcing laundry water to circulate from the bottom of the washing tub to the top of the washing tub, and the water circulation device extends from the bottom of the washing tub to the top of the washing tub.

According to another embodiment, there is provided a washing machine, comprising: a housing; a washing tub installed in the housing for washing clothes; a device for forcing washing water to circulate from the bottom of the washing tub to the top of the washing tub, the water circulation device from The bottom of the washing bucket extends to the top of the washing bucket; and a washing bucket rim installed on the top of the washing bucket, the washing bucket rim has a water channel and one or more nozzles, the water channel is connected with the above-mentioned water circulation device, and the nozzles are directed toward Washing water is sprayed inside the washing tub.

According to yet another embodiment, a washing machine is provided, comprising: a housing; a washing tub installed in the housing for washing clothes; a device for forcing laundry water to circulate from the bottom of the washing tub to the top of the washing tub, the water circulation device is from The bottom of the washing tub extends to the top of the washing tub; and a device for spraying laundry water vertically and uniformly inside the washing tub, the spraying device is installed at the upper end of the water circulation device.

According to the following detailed description in conjunction with the accompanying drawings, the above and other objects, features and other advantages of the present invention will be more clearly understood, wherein:

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

Figure 1B is a cross-sectional view showing a pump and a three-way valve;

Fig. 1C is a partial sectional view showing a housing in which an integral pump is installed;

Fig. 2 is a partial sectional view showing a washing machine according to a second embodiment of the present invention;

Fig. 3 A is a partial sectional view showing a washing machine according to a third embodiment of the present invention;

Fig. 3B is a cross-sectional view taken along line A-A in Fig. 3A;

Fig. 4 is a partial sectional view showing a washing machine according to a fourth embodiment of the present invention;

FIG. 5A is a partial sectional view showing a washing machine according to a fifth embodiment of the present invention;

Figure 5B is a perspective view of a vertical water spray nozzle;

Figure 5C is a side view of the nozzle;

Figure 5D is a bottom view of the nozzle;

Figure 5E is a side view showing the shape of sprayed water;

Figure 5F is a front view showing the shape of sprayed water;

Fig. 6 is a partial sectional view showing a washing machine according to a sixth embodiment of the present invention;

FIG. 7A is a partial sectional view showing a washing machine according to a seventh embodiment of the present invention;

Figure 7B is a detailed view of the 'B' portion in Figure 7A;

Fig. 8 is a sectional view showing a main part of a washing machine according to an eighth embodiment of the present invention;

Fig. 9 is a sectional view showing a main part of a washing machine according to a ninth embodiment of the present invention;

Fig. 10 is a sectional view showing a main part of a washing machine according to a tenth embodiment of the present invention;

Fig. 11A is a partial sectional view showing a washing machine according to an eleventh embodiment of the present invention;

Figure 11 B is a detailed view of 'C' part in Figure 11 A;

Fig. 12 is a sectional view showing a washing machine according to a twelfth embodiment of the present invention;

Fig. 13A is a partial sectional view showing a washing machine according to a thirteenth embodiment of the present invention;

Figure 13B is a detailed view of the 'D' portion in Figure 13A;

Fig. 14 is a partial sectional view showing the internal structure of a conventional inner-tub rotary washing machine.

Fig. 1A is a partial sectional view showing a washing machine according to a first embodiment of the present invention. Figure 1B is a cross-sectional view showing a pump and a three-way valve. Fig. 1C is a partial sectional view showing a case in which the integral pump is installed.

The washing machine according to the first embodiment of the present invention comprises: a housing 50 having a door 55 at its top; a washing tub 60 inclined at a predetermined angle θ with respect to the vertical axis; Four suspension rods 57 on the tub 60, which allow the tub 60 to tilt; and a driving motor 75 disposed below the tub 60 for rotating an inner tub (described below) of the tub 60.

The washing tub 60 includes an outer tub 22 mounted on the housing 50 with a suspension rod 57 and capable of tilting, and an inner tub 65 with an agitator 66 that rotates in the outer tub 22 when connected to a drive motor 75 .

The installation inclination angle θ of the washing tub 60 formed by the outer tub 61 and the inner tub 65 is in the range of 0°<θ<30°.

When the washing tub 60 is set inclined, the water flow in the inner tub 65 has an asymmetric form through the interaction between gravity, centrifugal force and the inclined inner surface of the inner tub 65, resulting in complicated laundry movement, thereby improving washing efficiency and achieving uniform washing of laundry .

A washing tub rim 62 protrudes radially from the upper end of the outer tub 61 for centrifugal washing. Wherein, the centrifugal force generated by the rotation of the inner tub 65 causes the water to rise along the inner surface of the outer tub 61 , and the water collides with the rim 62 of the washing tub and sprays into the inner tub 65 .

A drain hole 63 is formed at the lowest position on the bottom of the tub 61, and a drain pipe 64 extending from the drain hole 63 to the outside of the washing machine is connected with the drain hole 63.

A circulation hose 70 extends from the front of the drain pipe 64 to the upper end of the inner tub 65 to force water to circulate from the bottom of the washing tub 60 to the upper portion of the washing tub 60 .

According to the above configuration, when washing and rinsing operations are performed, the washing water is circulated through the circulation hose 70, and the washing water is sprayed from the upper part of the washing tub 60 into the inside of the inner tub 65. While performing the dehydration operation, the laundry water is discharged through the drain pipe 64 .

Specifically, the circulation hose 70 has a circulation pipe 71 integrated with the wall of the outer tub 61 and extends to the lower surface of the washing tub rim 62 . The upper end of the circulation hose 70 is connected to a nozzle 74 fixed to the tub rim 62 .

Certainly, the circulation pipeline 71 may not be integrated with the barrel wall of the outer barrel 61 , but formed separately and installed on the side of the outer barrel 61 .

A three-way valve for selectively opening a water passage communicating with one of the circulation hose 70 and the drain pipe 64 is installed at a position where the circulation hose 70 is branched from the drain pipe 64 . A pump 73 for forced water circulation or water discharge is provided between the drain hole 63 and the bifurcated position.

FIG. 1B is a cross-sectional view showing the pump 73 and the three-way valve 72 . The pump 73 is a centrifugal pump in which water enters the center of its impeller 73a. The valve 72 is located where the circulation hose 70 branches off from the drain pipe 64 .

The three-way valve 72 switches the water passage in such a manner that the valve body 72b is rotated by a solenoid actuator 72a.

Thus, the pump 73 forcibly circulates the water through the circulation hose 70 and the circulation pipe 71 , and forcibly discharges the water through the drain pipe 64 .

Fig. 1C is a sectional view showing a case where an integral type pump is installed. In the integral type pump 80, a centrifugal pump 83 and an axial flow pump 84 are connected to each other by a single motor shaft 82 to work together. The integral type pump 80 generates suction and discharge pressure on the centrifugal pump side during forward rotation, and generates suction and discharge pressure on the axial flow pump side during reverse rotation.

If the circulation hose 85 is connected to the centrifugal pump side to circulate the washing water, the drain pipe 86 is connected to the axial flow pump side.

In this case, when the integral type pump 80 rotates in the forward direction, the laundry water flows to the upper part of the washing tub 60 due to the pressure generated on one side of the centrifugal pump; Pressure is generated on one side of the pump, so the wash water is discharged to the outside.

When using the integral type pump 80, the three-way valve is unnecessary, unlike the previous embodiment which used a three-way valve. The two suction-side hoses 87 are respectively connected to the bottom of the tub 61 , or a single hose connected to the bottom of the tub 61 is separated into two suction-side hoses 87 .

On the other hand, instead of using the centrifugal pump shown in Figure 1B and the integrated pump shown in Figure 1C, a circulation hose and a drain pipe are respectively connected to the bottom of the tub, and a circulation pump and a drainage pump are respectively installed in the circulation soft pipe and drain.

The operation of the washing machine of the first embodiment is as follows.

When the washing machine is started, the washing water rises to an appropriate water level in the washing tub 60 . At this time, since the washing tub 60 is inclined, the washing tub 60 is asymmetrical with respect to the vertical axis.

In this state, when the driving motor 75 operates, the inner tub 65 rotates. Since the inner tub 65 is inclined relative to the vertical direction, the water forms a complex form of primary water flow by virtue of gravity, centrifugal force and the interaction between the inclined inner surface of the inner tub 65 .

In addition, since the agitator 66 installed in the inner tub 65 is inclined with respect to the vertical axis, upward force and centrifugal force are generated, thereby generating a secondary water flow having an asymmetrical complex form.

When the inner tub 65 rotates at a speed greater than a predetermined speed, effective washing is enabled due to the rotation of the outer tub 61 . That is, since the water whose water level rises along the inner surface of the outer tub 61 is sprayed into the inner tub 65 and simultaneously generates complicated water flows in the inner tub 65, friction between the washing water and clothes is increased, and washing performance is improved.

In addition, when the pump 73 is working, the washing water can be circulated through the circulation hose 85 and sprayed into the inner tub 65 through the nozzle 74 together with the spray water, thereby improving the washing efficiency.

In short, when washing is performed using the washing machine of the first embodiment, since the inner tub 65 is tilted, complex laundry motions are generated. At the same time, the centrifugal washing caused by the rotation of the inner tub 65 and the circulation washing caused by the operation of the pump 73 can be realized. As a result, since the minimal symmetrical flow is generated, friction between the washing water and the laundry is uniform, thereby preventing entanglement between the laundry and effectively washing the laundry.

Meanwhile, during the rinsing process, the operation of spraying the laundry water from the top of the inner tub 65 to the inside of the inner tub 65 results in an optimized effect. That is, in the prior art, the rinsing process is performed using agitation rinsing caused by the rotation of the inner tub 65 . And the rinsing here is to utilize centrifugal rinsing and agitation rinsing to carry out together, and in the process of centrifugal rinsing, washing water is sprayed into inner tub 65 inside from the top of inner tub 65 . In this way, the rinsing effect of the laundry is significantly improved.

And, since the centrifugal rinsing and stirring rinsing can be carried out in this way: when the inner tub 65 is tilted, water can circulate from the bottom of the inner tub 65 to the top of the inner tub 65 . Thus, a good rinsing effect can be achieved with a relatively small amount of water.

That is, when rinsing is performed using agitation rinsing generated by the rotation of the inner tub 65, water is supplied to the height of the clothes, and thereafter, rinsing is affected by friction between the washing water and the clothes. On the other hand, since centrifugal rinsing and agitation rinsing are performed together, laundry rinsing can be efficiently performed using a relatively small amount of water. Wherein, when the inner tub 65 is tilted, water circulates from the bottom of the inner tub 65 to the top of the inner tub 65 and is sprayed into the inner tub 65 from the top.

Thus, for example, if the agitated rinse uses 160 liters of water, then 50 liters of water are sufficient for both the agitated and centrifugal rinses. In addition, with this water, the rinsing efficiency can be increased by 10%.

Since a relatively small amount of water is used, the water supply and drainage time period is shortened, and the overall washing cycle of the clothes is shortened, or the rinsing effect is significantly increased by increasing the number of rinsing times.

Fig. 2 is a partial sectional view showing a washing machine according to a second embodiment of the present invention.

In the first embodiment, the circulation pipe 70 is formed on the side of the washing tub. In the second embodiment, however, the circulation pipe 70' is formed on the side of the case.

That is, the drain pipe 64' extends from the drain hole 63' of the washing tub 60' to the outside of the washing machine. A circulation hose 70' branches off from the drain pipe 64'. A pump 73' and a three-way valve are installed at the lower part of the housing 50' where the circulating hose 70' branches out from the drain pipe 64'.

The circulation hose 70' extends to a position below the casing cover 51' of the casing 50' and is fixed by a plurality of fixing pieces 50a', and its upper end is connected with a nozzle 74' fixed to the casing cover 51' so as to spray laundry Water enters the interior of the inner tub 65'.

In addition, a water supply pipe 52', a detergent adding hole 53', and a control panel 54' are mounted on the housing cover 51' of the housing 50'. A door 55' is installed at the front of the housing cover 51'.

Fig. 3A is a partial sectional view showing a washing machine according to a third embodiment of the present invention. Fig. 3B is a cross-sectional view taken along line A-A in Fig. 3A.

In the washing machine of the present embodiment, similar to the first and second embodiments, the washing tub 160 is inclined at a predetermined angle θ with respect to the vertical axis.

The drain pipe 164 is connected to the bottom of the washing tub 160 , and a circulation hose 170 is branched from the drain pipe 164 . A pump 173 and a three-way valve are installed at the position where the circulation hose 170 is branched from the drain pipe 164 .

The circulation pipe 172 connected to the circulation hose 170 is integrated with the side wall of the tub 161 .

A washing tub rim 180 is an annular disk protruding from the upper end of the outer tub 161 . As shown in FIG. 3B , the water channel 181 is radially formed along the inside of the washing tub rim 180 , and a plurality of nozzles 183 are formed on the inner circumference of the washing tub rim 180 to spray laundry water into the inner tub 165 .

The nozzle 183 is formed by cutting out a plurality of parts of the water passage 181 . The outer end of the nozzle 183 may protrude into the inner tub 165 by a predetermined length.

Since the washing tub 160 is inclined, the nozzle 183 is preferably disposed at a relatively high position. The nozzles 183 are preferably arranged symmetrically when viewed from the front of the washing machine.

Although it is shown in FIG. 3B that two nozzles 183 are formed on the tub rim 180 , four or six nozzles may be symmetrically formed on the tub rim 180 as needed.

Since in the above-mentioned third embodiment, the washing tub 160 is inclined at a predetermined angle, when the inner tub 165 rotates, complex and asymmetric laundry motions can be formed. When the inner tub 165 rotates at a speed higher than a certain predetermined speed, centrifugal washing is generated under the action of the washing tub rim 180 .

When the pump 173 works, the laundry water is forced to circulate to the top of the washing tub 160 through the circulation hose 170 , the circulation pipe 172 , the water channel 181 of the tub rim 180 and the nozzle 183 , and then sprayed into the inner tub 165 .

Therefore, since the washing water is forced to circulate to the spray nozzle 183 on the washing tub rim 180 by using the pump 173, circulating washing and rinsing can be obtained when the inner tub 165 rotates below a certain predetermined speed. Wherein the laundry water is sprayed down from the top of the washing tub 160 .

In particular, since a plurality of nozzles 183 are symmetrically formed on the washing tub rim 180, effective cycle washing is achieved.

Fig. 4 is a partial sectional view showing a washing machine according to a fourth embodiment of the present invention.

In the third embodiment, the washing tub 160 is inclined at a predetermined angle θ. While in the fourth embodiment, the washing tub 160' is vertically arranged in the housing 150'.

The drain pipe 164' is connected to the bottom of the washing tub 160', and a circulation hose 170' is branched from the drain pipe 164'. A pump 173' and a three-way valve are installed at the position where the circulation hose 170' diverges from the drain pipe 164'.

One side of the circulation pipe 172' and the outer barrel 161' is integrally formed. The water channel 181' is formed in the washing tub rim 180' in the circumferential direction and connected with the circulation pipe 172'.

A plurality of nozzles 183' are formed by cutting away a plurality of inner parts of the water passage 181' of the washing tub rim 180'.

In this embodiment, under the action of the pump 173', the laundry water circulates through the circulation hose 170', the circulation pipe 172', the water channel 181' of the washing tub rim 180' and the nozzle 183', which is the same as that of the third embodiment. Same for cycle wash and rinse.

Fig. 5A is a partial sectional view showing a washing machine according to a fifth embodiment of the present invention. Figure 5B is a perspective view of a vertical water spray nozzle. Figure 5C is a side view of the nozzle. Figure 5D is a bottom view of the nozzle. Fig. 5E is a side view showing the shape of sprayed water. Fig. 5F is a front view showing the shape of sprayed water.

In the fifth embodiment, a vertical spray nozzle 280 for spraying laundry water into the inner tub 265 in a waterfall manner is provided on the washing tub rim 262 and connected to the upper end of the circulation hose 270 .

In addition, the washing tub 260 is inclined at a predetermined angle θ with respect to the vertical axis.

As shown in Figures 5B to 5D, the vertical water spray nozzle 280 includes: a nozzle body 281 widened in a fan shape toward its outer end; a flow guide end formed at the outer end of the nozzle body 281 for guiding the circulating water downward wall 283; and a spray hole 285 for spraying circulating water downward, located on the lower surface of the nozzle body 281, near the flow guide end wall 283.

The nozzle body 281 is fan-shaped, and its width is greater than its height, so that the water flowing from the circulation hose 270 can be sprayed horizontally.

The flow guiding end wall 283 protrudes below the lower surface of the nozzle body 281 so as to safely guide the water flowing out of the nozzle body 281 downward. The side wall 282 of the nozzle body 281 extends to the lower end of the flow guide end wall 283 .

As shown in FIG. 5D , the spray hole 285 has a right triangle shape widened from one side to the other so that the washing water sprayed into the inside of the washing tub is widened in the length direction.

That is, the inner line 286 defining the inside of the spray hole 285 is a straight line, while the outer line 284 defining the outside of the spray hole 285 is a diagonal line and is separated from the inner line 286 from one side to the other.

As shown in FIGS. 5E and 5F, due to the vertical water spray nozzle 280 in the fifth embodiment, the falling water flow becomes wider in the direction of its length.

The washing water flowing into the nozzle body 281 is sprayed horizontally, collides with the flow guide end wall 283 and is guided downward. Then, the water is vertically sprayed into the inside of the washing tub 260 through the spray hole 285 . At this time, water is uniformly sprayed into the inside of the washing tub 260 through the spray hole 285 having a long triangle shape.

In addition, since the spray hole 285 of the vertical water spray nozzle 280 has a right triangle shape and the flow guide end wall 283 is inclined, the water widens along its length direction ( FIG. 5E ) and narrows along its width direction ( FIG. 5E ). 5F) and fall at the same time.

As a result, the water, which is widened in its lengthwise direction when falling, collides uniformly with the laundry. Then, flow radially to the outside portion inside the wash tub 265 .

And, since the vertical water spray nozzle 280 is formed with more spray holes 285, when the washing water is sprayed from the spray holes 285, the resistance to water is minimized. Thereby preventing the spray hole 285 from being clogged and allowing the use of a small capacity pump to circulate the washing water.

Fig. 6 is a partial sectional view showing a washing machine according to a sixth embodiment of the present invention.

In the sixth embodiment, the washing tub 260' is arranged vertically, and the circulating hose 270' branched from the drain pipe 264' is fixed on the casing 250' of the washing machine.

A vertical water spray nozzle 280' connected to the upper end of the circulation hose 270' is fixed on a housing cover 251' constituting the top of the housing 250'.

According to the sixth embodiment of the present invention, since the washing water is uniformly sprayed into the inside of the washing tub 260' through the vertical water spray nozzles 280', cycle washing and rinsing are realized, and the washing performance of the washing machine is improved.

Fig. 7A is a partial sectional view showing a washing machine according to a seventh embodiment of the present invention. FIG. 7B is a detailed view of portion 'B' in FIG. 7A.

As in the first embodiment, in the seventh embodiment, the washing tub 360 is disposed in the housing 250' inclined at a predetermined angle θ. A three-way valve is installed at a position where the circulation hose 370 is branched from the drain pipe 364 for selectively opening a water passage communicating with one of the circulation hose 370 and the drain pipe 364 . A pump 373 is provided above the three-way valve to forcibly circulate or drain the washing water.

The circulation hose 370 extends below the washing tub rim 362 through a circulation pipe 371 formed integrally with one side of the outer tub 361 . The nozzle 374 fixed on the rim 362 of the washing tub is connected to the upper end of the circulation hose 370 so as to spray washing water into the inner tub 365 .

Especially, in this embodiment, a lint collecting device 380 is installed on the upper part of the circulation pipe 371, so as to remove lint and fine hair in the washing water.

Referring to FIG. 7B, an inner elbow 371a is formed on the upper portion of the circulation pipe 371. Referring to FIG. At the position where the centrifugal force is relatively large behind the inner elbow 371a, there is a bypass pipe 372 branching out from the circulation pipe 371 .

Since the threads and hairs are solid materials, they move outwards by centrifugal force as they pass the bend 371a. The bypass pipe 372 is formed at a certain position where the thread ends and fine hairs pass.

A mounting hole 372a is formed in the upper portion of the bypass pipe 372, thereby allowing the thread waste collecting device 380 to be mounted. A through hole 362a is formed in the tub rim 362 to accommodate the lint collecting device 380 .

The thread collecting device 380 includes a device housing 381 and a collecting net 383 . The device housing 381 is fitted into the installation hole 372a of the bypass pipe 372 through the through hole 362a. The device casing 381 has an inlet and an outlet so that washing water passes through the casing 381 . The collecting net 383 has a net shape so as to collect thread ends and fine hairs, and is fixed on the outlet of the device housing 381 .

The thread collecting device 383 is detachably installed in the bypass pipe 372 through the through hole 362a. In order to fix the lint collecting device 383 in the washing tub rim 362, a fitting groove 362b is formed on the washing tub rim 362. As shown in FIG. A filler 362c is provided so that the lint collecting device 383 is in close contact with the washing tub rim 362 and prevents the washing water from leaking.

A handle 385 is formed on the upper surface of the lint collecting device 380 so that the lint collecting device 380 can be easily removed from the bypass pipe 372 .

According to the seventh embodiment of the present invention, the washing water is forcibly circulated to the upper part of the washing machine through the circulation hose 370 and the circulation pipe 371. When the washing water passes through the elbow 371a of the circulation pipe 371, the lint and fine hair move through the bypass pipe 372.

When the washing water passes through the elbow 371 a, the lint and fluff are captured by the collecting net 383 , and the pure washing water is sprayed into the washing tub 360 through the nozzle 374 . Accordingly, since lint and fuzz can be removed using the lint collecting device 380 during cycle washing and rinsing, laundry can be efficiently washed.

In addition, since the lint collecting device 380 can be detached from the through hole 362a of the washing tub rim 362, the collected lint and fluff can be easily discarded.

Fig. 8 is a sectional view showing a main part of a washing machine according to an eighth embodiment of the present invention.

According to the seventh embodiment, the bypass pipe 372 is branched from the circulation pipe 371, and the lint collection device 380 is installed in the bypass pipe 372. In the eighth embodiment, however, the lint collection device 315 is directly installed in the circulation pipe 310 .

The circulation pipe 310 bends inwardly under the washing tub rim 313 . A mounting hole 312 is formed at a certain position behind the elbow 311 on the circulating pipe 310 so that the thread collecting device 315 is installed in the circulating pipe 310 . A through hole 314 is also formed in the washing tub rim 313 to accommodate a lint collecting device 315 .

The inlet 316 of the thread end collecting device 315 is open and covered with a collecting net 317 . A handle 318 is formed on the upper surface of the thread end collecting device 315 .

The thread collecting device 315 is installed on the upper part of the circulating pipe 310 . The lower part of the circulation pipe 310 is opened, so that the washing water can pass through the circulation pipe 310 without resistance.

Fig. 9 is a sectional view showing a main part of a washing machine according to a ninth embodiment of the present invention.

A nozzle pipe 325 for spraying laundry water into the inner tub is combined with an upper end of a circulation pipe 321 extending below the washing tub rim 320 . The nozzle pipe 325 is detachably combined with the circulation pipe 321 in a threaded manner.

A lint collecting device 326 is installed inside the nozzle pipe 325 so as to collect lint and fluff. The end collecting device 326 is installed in the inlet of the nozzle pipe 325, and is a pocket-shaped net with the inlet opened.

Therefore, when the washing water passes through the lint collecting device 326, lint and fluff are captured. If the nozzle pipe 325 is detached from the circulation duct 321 and shaken up and down, it is easy to take out the caught lint and fine hair from the lint collecting device 326 .

Fig. 10 is a sectional view showing a main part of a washing machine according to a tenth embodiment of the present invention.

Different from the seventh embodiment, according to the tenth embodiment, a circulation hose 335 is branched from a drain pipe 333 and fixed on the housing 331, and a nozzle pipe 337 for spraying washing water is installed on the housing cover 332.

The nozzle pipe 337 is detachably connected to the circulation hose 335 . As in the ninth embodiment, a lint collecting device 338 is installed inside the nozzle pipe 337 .

The pump 334 and the three-way valve are fixed at a position where the circulating hose 335 branches out from the drain pipe 333 and are fixed on the bottom of the housing 331 .

Fig. 11A is a partial sectional view showing a washing machine according to an eleventh embodiment of the present invention. FIG. 11B is a detailed view of portion 'C' in FIG. 11A.

The washing machine of the eleventh embodiment includes: a washing tub 460 inclined at a predetermined angle θ with respect to the vertical axis; water; a circulation pump 471 arranged on the circulation hose 470 for forced circulation of washing water; a centrifugal lint separator 480 arranged on the circulation hose 470 to collect lint and fluff in a centrifugal manner; A thread end storage chamber 485 connected to the bottom of the thread end separator 480 for storing thread ends and fine hairs; and a discharge pipe 490 extending from the thread end storage chamber 485 bottom to the outside for discharging and storing thread ends and fine hairs.

The circulation hose 470 can be integrally formed with the side wall of the outer tub 461 . The upper end of the circulation hose 470 is fixed to the upper portion of the washing tub 460 and has a nozzle 472 to spray washing water into the inner tub 465 .

The circulating pump 471 is arranged at a position below the centrifugal lint separator 480 on the circulating hose 470 to provide pumping force so that the washing water passing through the centrifugal lint separator 480 is sprayed into the inner tub 465 .

Referring to FIG. 11B , the centrifugal lint separator 480 includes a cone-shaped collection bucket 481 . The collection bucket 481 has an inlet 482 , an outlet 483 and a circulation hole 484 . An inlet 482 is formed on the upper portion of the collection tub 481 for receiving washing water. An outlet 483 is formed at the bottom of the collection tub 481 to allow impurities or washing water to pass through. The circulation hole 484 is formed on the top of the collection bucket 481 to allow the washing water without lint and fluff to flow into the circulation hose 470 .

The centrifugal lint separator 480 works on the centrifugal principle, which is used to separate solid materials suspended in a gas or liquid.

The lint storage chamber 485 has a raised shape in order to store lint or fine hair discharged from the centrifugal lint separator 480 .

The discharge pipe 490 extends from the lower portion of the lint storage chamber 485 to the outside of the housing 450 . A discharge valve 495 for selectively opening and closing the water passage is provided on the discharge pipe 490 .

In the eleventh embodiment, after circulation washing is performed under the operation of the circulation pump 471, the water collected in the lower part of the washing tub 460 passes through the centrifugal lint separator 480 and the circulation hose 470, and then is sprayed into the inner tub 465 through the nozzle 472.

The laundry water passing through the centrifugal lint separator 480 flows into the inlet 482 along a tangential direction, and then forms a high-speed vortex inside the separation bucket 481 and falls down.

In this case, solid materials such as thread ends or fine hairs collide with the inner wall of the separation barrel 481, thereby losing kinetic energy. As a result, the solid material falls into the lint storage chamber 485 through the outlet 483 , and the washing water is discharged into the circulation hose 470 through the circulation hole 484 .

If the discharge valve 495 is opened when solid materials such as lint or fine wool are stored in the lint storage chamber 485, the solid materials are automatically discharged to the outside through the discharge pipe 490 together with the washing water.

Fig. 12 is a sectional view showing a washing machine according to a twelfth embodiment of the present invention.

According to the twelfth embodiment of the present invention, a washing tub 460' composed of an outer tub 461' and an inner tub 465' is vertically arranged inside the casing 450'.

The circulation hose 470' extends from the bottom of the outer tub 461' to the top of the inner tub 465', thereby enabling circular washing. A centrifugal lint separator 480' is provided on the circulation hose 470' and serves to centrifugally separate solid materials such as lint.

The pump 471' is arranged at the inlet position of the centrifugal lint separator 480' to generate a pumping force for forced circulation or discharge of laundry water. A discharge pipe 490' extends from the bottom of the lint storage chamber 485' to the upper portion of the housing 450' for discharging solid materials such as lint and lint in the washing water.

A discharge valve 495' for selectively opening and closing the water passage is provided on the drain pipe 490'. A shutoff valve 497' for cutting off the water passage during the discharge operation is provided after the lint separator 480' on the circulation hose 470'.

According to the twelfth embodiment of the present invention, the inner tub 465' is rotated by the drive motor 475' for washing and rinsing. Under the action of the pump 471', the cycle washing is realized.

During this operation, when the washing water passes through the lint separator 480', the lint and the washing water are separated and stored in the lint storage chamber 485'. If the pump 471' works while the shut-off valve 497' is closed and the discharge valve 495' is opened during the washing water discharge process, then the thread ends and the washing water are discharged to the outside through the discharge pipe 490' together.

Fig. 13A is a partial sectional view showing a washing machine according to a thirteenth embodiment of the present invention. FIG. 13B is a detailed view of portion 'D' in FIG. 13A.

The washing machine of the thirteenth embodiment comprises: a lint collecting chamber 580 arranged under the washing tub 560 for collecting impurities such as lint; Circulation hose 570; a filter screen 582 installed near the inlet of circulation hose 570 in the lint collection chamber 580 for filtering impurities such as lint; Pump 572.

The washing machine also includes: a discharge pipe 585 branched from the circulation hose 570 after the pump 572; a three-way valve 573 for opening and closing the water passage provided at the branch position of the discharge pipe 585 from the circulation hose 570; and A venturi-shaped lint discharge pressure generator 588 discharges impurities such as lint from the lint collection chamber 580 by utilizing a pressure difference.

The circulation hose 570 may be integrally formed with the side wall of the outer tub 561 . The upper end portion of the circulation hose 570 is fixed to the upper portion of the washing tub 560 and has a nozzle 574 to spray washing water into the inner tub 565 .

The pump 572 provides pumping force for circulating the washing water through the circulation hose 570 or discharging the washing water through the drain pipe 585 .

The upper end of the drain pipe 585 is disposed higher than the full water level of the washing tub 560 . In this case, it is not necessary to provide a discharge valve in the drain pipe 585 .

The thread end discharge pressure generator 588 comprises a venturi tube 586 formed in the drain pipe 585, and a thread end discharge pipe 587, and the thread end discharge pipe 587 connects the venturi tube 586 and the bottom of the thread end collection chamber 580 together, and discharges to the outside lint.

In this case, the lint discharge line 587 is connected to the venturi 586 at the point of lowest pressure.

If the upper end of the drain pipe 585 is lower than the water level of the washing tub 560, a discharge valve must be provided to prevent the washing water from being discharged naturally.

According to the thirteenth embodiment, when the pump 572 operates, since the laundry water passes through the filter 582 while entering the circulation hose 570, solid materials are collected into the lint collection chamber 580.

Since the above washing water is kept flowing during washing and rinsing, impurities such as lint are collected into the lint collection chamber 580 .

When the pump 572 operates to open the drain pipe 585 by operating the three-way valve 573, the washing water is discharged to the outside through the drain pipe 585. At this time, since the laundry water passes through the venturi 586 to generate a relatively low pressure, impurities stored in the lint collection chamber 580 such as lint are automatically discharged to the outside through the drain pipe 585 together with the laundry water.

According to the present invention, since the washing tub of the washing machine is inclined at a predetermined angle relative to the vertical axis and realizes centrifugal and cycle washing, the laundry water flow is complicated throughout the washing process, thereby preventing the entanglement of clothes and improving the washing performance of the washing machine .

In addition, according to the present invention, since the washing water is circulated in such a way that the water in the lower part of the washing tub can rise to the top of the washing tub during the washing and rinsing process of the washing machine, the washing and rinsing process requires less water and significantly shortens the entire washing cycle. .

According to the present invention, since a lint collecting device is provided in the circulation hose, impurities such as lint and fluff can be easily removed, thereby improving the washing performance of the washing machine.

According to the present invention, since a centrifugal lint separator is provided on the circulation hose or a lint collection chamber is provided under the washing tub, impurities such as lint and fine hair are automatically discharged to the outside during the draining operation, thereby being easily removed from the clothes. Impurities are removed and discharged to the outside.

Although the preferred embodiment of the present invention has been disclosed for illustrative purposes, those skilled in the art will understand that various modifications, additions and substitutions can be made without departing from the scope and spirit of the present invention as described in the appended claims It is possible.

Claims (4)

1. washing machine comprises:

A washtub that is installed in the washing machine shell;

One is used for spraying circulating line laundry water, extend to its top from the washtub bottom to washtub is inner;

One is arranged on circulating pump on the circulating line, that be used for forced circulation laundry water;

One is arranged on centrifugal the end of a thread separator on the circulating line, collect the end of a thread and fine, soft fur with centrifugation;

One with the end of a thread locker room that link to each other, that be used for storing the end of a thread and fine, soft fur, centrifugal the end of a thread separator bottom; With

One extend to from bottom, the end of a thread locker room the outside, be used for the end of a thread that will storage and the tapping equipment that fine, soft fur discharges with laundry water.

2. washing machine as claimed in claim 1 is characterized in that

Described pump is arranged on the circulating line part that is connected with described centrifugal the end of a thread separator outlet;

Described tapping equipment comprises that extends to a drainpipe outside, that be used for natural drainage from the end of a thread collecting chamber bottom, and one be arranged on the drainpipe, be used for selectively opened and close the drain valve of aquaporin.

3. washing machine as claimed in claim 1 is characterized in that

Described pump is arranged on first circulating line part that is connected with the import of described centrifugal the end of a thread separator; And

Described tapping equipment comprises that one extends to the drainpipe that is higher than the washtub tip position bottom the end of a thread collecting chamber, one be arranged on the drainpipe, be used for selectively opened and close the drain valve of aquaporin, with a cut-off valve that is arranged on second circulating line part that is connected with described centrifugal the end of a thread separator outlet.

4. as any one described washing machine of claim 1 to 3, it is characterized in that described centrifugal the end of a thread separator comprises a cone-shaped collection bucket, collecting vessel has an import, an outlet and a circulation port; Described import is formed at the collecting vessel upper lateral part, is used to hold laundry water; Described outlet is formed at the collecting vessel bottom, allows impurity or laundry water to pass through; Described circulation port is formed at the collecting vessel top, and the laundry water that allows not have the end of a thread and fine, soft fur flows into circulating line.

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