JP2009247719A - Drum washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine which collects lint from clothes generated during washing in a washing step without fail and is excellent in washing result. <P>SOLUTION: The washing machine includes: a water receiving tank 1 for storing washing water; a washing and spin-drying tank 2 which is supported freely rotating forward and backward inside the water receiving tank 1 and wrapped; a plurality of baffles 3 provided on an inner peripheral surface of the washing and spin-drying tank 2; and an attachable/detachable filter device 15 which is provided projected in the inner peripheral surface of the washing and spin-drying tank 2. The filter device 15 has a water charge port 21 and a water discharge port 23 on both surfaces facing in forward and backward rotation directions of the washing and spin-drying tank 2 and has a net attachable/detachable filter 19 for collecting lint or foreign substances in the washing water and an opening/closing mechanism 22 opening the water charge port 21 inward by water pressure so as to collect lint without fail. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drum-type washing machine or a drum-type washing / drying machine that performs laundry washing and centrifugal dewatering with a drum that is rotationally driven about an axis having a horizontal direction or an elevation angle.

  Conventionally, this type of drum-type washing machine has a cleaning effect by a mechanical “tapping” method in which clothes are lifted by a partition structure provided in a drum called a baffle and then dropped from above the drum. Raised.

However, tapping washing is a method of removing dirt from clothing by the impact force of dropping it from a high place with the weight of wet clothing, so although the cleaning power is high, the impact force on clothing is strong, so lint ( There is a problem that lint is likely to be generated, and the generated lint is clogged in the drainage port or adheres to the clothes being washed to reduce the finish of the washing. Therefore, various filters for collecting lint in the washing water have been proposed, and a washing machine having a filter 32 inside a baffle 31 that can be removed as shown in FIG. 1).
Japanese Unexamined Patent Publication No. 8-47593

  However, in such a conventional drum-type washing machine, in order to improve the washing power of clothes, the drum is not rotated in only one direction, but is periodically inverted or washed in a short time. Although a filter mechanism is installed to collect lint from clothing generated during washing, the lint that has been repaired once in the filter section is released again into the washing water by reversing the water flow. I had a problem.

  Moreover, in the conventional filter mechanism, there existed a subject that the structural strength of the baffle itself which stirs and lifts wet clothing decreases by being integrated with the baffle and being removable.

  The present invention solves the above-described problem, and has a filter device having a configuration independent of the baffle, and the drum which is a washing and dewatering tub is periodically rotated forward and reverse or reversed in a short time. Even in such a case, the collected lint is not discharged into the washing water, and the object is to make the washing machine excellent in finish without lint adhering to the laundry.

  In order to solve the above-mentioned conventional problems, the washing machine of the present invention includes a water receiving tub for storing washing water, and a washing and dehydrating tub enclosed and supported in the water receiving tub so as to be rotatable forward and backward. A plurality of baffles provided on an inner peripheral surface of the washing / dehydrating tub; and a detachable filter device provided protruding from an inner peripheral surface of the washing / dehydrating tub. Opening on both sides facing the forward and reverse rotation direction of the cum dewatering tank, removable net-like filter for collecting lint and foreign matter in washing water, and opening inside the filter device with water pressure and from the reverse direction An opening / closing mechanism for closing against water pressure is provided at one of the openings.

As a result, the collected lint is not released again into the wash water even when washing is performed such that the drum, which is a washing and dewatering tub, is periodically rotated forward and backward, or reversed in a short time. Therefore, it is possible to provide a washing machine with excellent finish without lint adhering to the laundry.

  According to the present invention, it is possible to make it difficult for the lint collected by the filter device to go out of the filter device, and it is possible to always remove and reduce the lint in the washing water, and the finish of the laundry clothes is excellent. A washing machine can be provided.

  1st invention is provided in the inner peripheral surface of the water receiving tub which stores washing water, the washing and dehydrating tub enclosed and supported inside the said water receiving tub so that forward / reverse rotation is possible freely A plurality of baffles formed, and a removable filter device protruding from an inner peripheral surface of the washing and dewatering tub, the filter device facing the forward and reverse rotation directions of the washing and dewatering tub Opening on both sides, removable net-like filter that collects lint and foreign matter in washing water, and opening / closing mechanism that opens inside the filter device with water pressure and closes against water pressure from the opposite direction In one of the openings.

  As a result, all the lint existing in the washing water flowing in from the opening having the opening / closing mechanism is collected by the net-like filter inside the filter device, and the water pressure from the washing water is also applied when the washing and dewatering tub is inverted. Since the lint collected by closing the opening and closing mechanism does not come out of the filter device, it is possible to remove and reduce lint in the washing water at all times. It becomes possible to provide.

  According to a second invention, in the first invention, the rotation axis of the washing and dewatering tub is tilted in the elevation direction, and the filter device is disposed on the inner peripheral surface bottom surface side of the washing and dewatering tub. The washing water can easily flow into the device, the lint existing in the washing water can be easily collected, and the lint can be efficiently removed along with the rotation of the washing and dehydrating tub. In the case of a structure having an elevation angle toward the surface, since the washing water is collected around the bottom surface portion, lint in the washing water is easily collected more efficiently.

  According to a third invention, in the first or second invention, the filter device is disposed so as to straddle the bottom surface portion and the inner peripheral surface of the washing and dewatering tub, and the bottom surface portion even when there is little washing water It becomes possible to flow into the filter device for washing water concentrated in the vicinity, and it is possible to provide a washing machine with a good finish at the time of washing that is excellent in the collection efficiency of lint in the washing water.

  In addition, when the rotation axis of the washing / dehydrating tub is installed so as to have an elevation angle with respect to the horizontal plane toward the charging door, it is located at the bottom of the tub, and even when there is particularly little washing water, Since the filter device is located in the highest area of the filter, it is possible to increase the amount of washing water flowing into the filter, and to provide a washing machine with good finishing performance at the time of washing with excellent lint collection efficiency in washing water Can do.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the filter device is disposed in the vicinity of the baffle, and is disposed so that the opening side without the opening / closing mechanism faces the baffle. Even when the rotation direction of the washing / dehydrating tub changes and the washing water flows into the filter device from the opening side where the opening / closing mechanism is not provided, the flow of the washing water is obstructed by the baffle. The amount of inflow from the opening side without the opening / closing mechanism of the filter device is reduced, making it difficult for the lint collected in the net-like filter to be peeled off, and the inside of the filter device on the opening side without the opening / closing mechanism The amount of lint accumulated in the garment is also reduced, and the reduction in the collection efficiency of the filter device is reduced. It is possible to provide a washing machine.

  The fifth invention is the invention according to any one of the first to fourth inventions, wherein the filter device is configured such that the height from the inner peripheral surface of the washing and dewatering tub is lower than the height of the baffle. The amount of washing water that flows in from the opening that does not exist can be reduced by using the baffle as a barrier, and the amount of lint that can flow out again into the washing water can be reduced by being collected on the back side of the filter of the filter device. In addition, dirt in the filter device can be prevented and lint collecting performance can be maintained. Furthermore, the pressure received from the wet clothing while rotating can be reduced by making it lower than the height of the baffle, and the reliability of the filter device can be improved.

  According to a sixth invention, in any one of the first to fifth inventions, the filter device is provided with a net-like filter having an opening / closing mechanism in a detachable manner, so that the filter can be easily attached and detached. It is possible to provide a washing machine excellent in convenience when washing collected lint.

  Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a schematic longitudinal sectional view as seen from the side of the washing machine according to the first embodiment. In the figure, 1 is a water receiving tank, 2 is a washing and dewatering tank, 3 is a baffle, 4 is a motor, 5 is a small hole, 15 is a filter device, 16 is a door for taking in and out laundry, and 17 is an arbitrary amount of washing. Is the washing water level set in In the present embodiment, the rotation axes of the water receiving tub 1 and the washing / dehydrating tub 2 are configured to be at an elevation angle from the horizontal direction toward the door 16 side, but there is no problem even if it is horizontal.

  FIG. 2 is a schematic cross-sectional view of the filter device 15 as seen from a more detailed front direction (door side). In the figure, 18 is a filter mounting portion, 19 is a filter, 20 is an arrangement path for arranging a filter provided in the filter device, 21 is a water inlet into which washing water before being filtered by the filter flows, 22 is an opening / closing mechanism, and 23 is a water outlet from which the washing water filtered by the filter is discharged. The arrows indicate the flow of washing water generated when the washing and dewatering tub 2 rotates in a certain direction. The operation in this embodiment will be described below.

  As shown in FIG. 1, a drum type washing machine includes a washing / dehydrating tub 2 rotatably contained in a water receiving tub 1, and a laundry is stored in the washing / dehydrating tub 2 by opening a door 16. When the operation is started, after the weight of the laundry is detected, an appropriate amount of water is introduced by the water supply mechanism (not shown in the figure). A plurality of baffles 3 for lifting wet clothes and dropping them from high places are fixed on the inner peripheral surface of the washing and dehydrating tub and are arranged at equal intervals. Rotate.

  The filter device 15 of the present invention is attached in the vicinity of the baffle 3. In the present embodiment, since the rotation axis of the washing / dehydrating tub 2 has an elevation angle with respect to the horizontal axis in the direction of the door 16, the water level of the washing water poured becomes deeper in the washing / dehydrating tub 2. It is high.

  Here, the filter device 15 has a configuration as shown in FIG. 2, the surface having the water inlet 21 is directed to the side opposite to the surface facing the nearby baffle 3, and the surface having the water outlet 23 is defined as the baffle 3. They are facing each other.

  The flow of the washing water generated by the rotation of the washing / dehydrating tub 2 is in the direction opposite to the rotation of the washing / dehydrating tub 2, and when the baffle 3 rotates to the near side in FIG. Move from side to back.

  The arrows in FIG. 2 indicate the movement of the washing water. The washing water including lint pushes open and closes the opening / closing mechanism 22 by water pressure, and the washing water enters the filter device 15 and passes through the net-like filter 19. The water is discharged from the outlet 23. At this time, lint in the washing water is collected by the filter 19. While the rotation in the same direction continues, this collection operation is continued, and when it is reversed, the washing water flows in the same way from the water outlet 23. At this time, the opening / closing mechanism 22 receives pressure from the inside. However, since it does not have a structure that opens toward the outside of the filter device 15, the lint collected once is not released again into the washing water.

  The small holes 5 in FIG. 1 are provided as holes through which the removed water is removed when the water is removed by centrifugal force at the time of dehydration.

  Further, as shown in FIG. 1, the amount of the washing water flowing into the filter device 15 can be increased even when the laundry is small and the amount of the washing water is small by being arranged at the peripheral portion of the bottom surface portion b of the washing and dewatering tub 2. The lint in the washing water can be efficiently collected and removed.

  FIG. 3 shows another example of the location of the filter device of the present invention. In the figure, a represents the inner peripheral surface side of the washing and dewatering tank 2, and b represents the bottom surface portion. Thus, by arranging the filter device 15 so as to straddle the bottom surface portion and the inner peripheral surface portion of the washing and dewatering tub, it is possible to efficiently collect and remove lint in the washing water even when the amount of washing water is particularly small. Can do.

  Further, in the case of the arrangement as shown in FIG. 3, when the washing and dewatering tub 2 is installed so that the rotation axis thereof has an elevation angle with respect to the horizontal plane, Since the filter devices 15 are in close contact with each other, there is no washing water, and the water level of the washing water is increased accordingly, so that the effect is further improved when the amount of washing water is particularly small.

  In FIG. 3, a triangular opening / closing mechanism is used, but in the case of the present invention, the shape of the opening / closing mechanism is not particularly limited, and there is a particular problem whether it is a slit shape or a square shape. Absent.

  FIG. 4 is still another example of the location of the filter device of the present invention, and is a schematic cross-sectional view when viewed from the door side toward the bottom of the tank. The numbers in the figure represent the same as those shown in FIGS. The filter device 15 is lower than the height of the baffle 3 from the inner circumferential surface of the washing / dehydrating tub, is disposed in the vicinity of the baffle 3, and the surface of the water outlet 23 to which the filter 19 is not attached is adjacent to the baffle 3. It arrange | positions so that a surface may be opposed.

  When the washing water is injected and the washing and dewatering tub 2 rotates in the clockwise direction, the washing water moves from the left to the right on the paper surface, and the water flows from the water inlet 22 and collects lint efficiently. be able to. Further, when the washing and dewatering tub 2 starts to rotate in the counterclockwise direction, the washing water moves from the right to the left on the paper surface, but the washing water enters from the outlet 23 because the baffle 3 serves as a wall. Since the momentum of water is suppressed, the momentum of water when entering the water inlet 22 when the washing and dewatering tub 2 rotates clockwise can be weakened. Further, the water flow gets over the baffle 3 and enters the inside of the filter device 15 from the outlet 23, but the opening / closing mechanism 22 is closed by the pressure of the washing water, so that the lint collected by the filter 19 is temporarily filtered. Even if it leaves, it will not be released again into the wash water.

Further, even if the washing water moves from the right to the left on the paper surface, the washing water flow does not pass through the filter device 15 and the washing water is rotated from the left to the right on the paper surface when the washing and dewatering tub 2 rotates clockwise. Therefore, there is little lint accumulated from the back side of the filter 19, and the filter device 15
The impact on is small.

  Further, since the opening / closing mechanism 22 is opened toward the inside of the filter device 15 by water pressure, even when clothes are placed on the filter device 15, the inflow of washing water is not affected and lint can be collected.

  Next, FIG. 5 is incorporated in the baffle 3 as still another example of the location of the filter device of the present invention. The numbers in the figure represent the same as those shown in FIGS. The same applies to the other examples so far, but the filter 19 is attached to the case and the baffle 3 constituting the filter device by the filter attaching portion 18 and can be removed. An arrangement path 20 for incorporating the filter 19 is provided in the case or the baffle. The filter 19 is incorporated along the arrangement path. The size of the filter is not particularly limited, but when configured as the filter device 15, there is a restriction on the height with respect to the baffle as described above.

  Further, when incorporated in the baffle as shown in this figure, the same component can be used together, so the opening area can be increased or the number of filter devices 15 can be easily increased. Therefore, it is possible to efficiently collect lint in the washing water.

  As described above, the drum type washing machine of the present invention reliably collects lint generated during washing, and even when the washing and dehydrating tank suddenly reverses or periodically changes its rotation direction. Since the collected lint is not re-released into the washing water, it can be applied to any washing machine for collecting lint.

Schematic longitudinal cross-sectional view seen from the side of the drum type washing machine in Embodiment 1 of the present invention Schematic sectional view seen from the front of the filter device in Embodiment 1 of the present invention The schematic perspective view which shows an example of the other arrangement | positioning form of the filter apparatus in Embodiment 1 of this invention. Schematic sectional view seen from the door direction front of the washing and dewatering tub showing an example of another arrangement form of the filter device in Embodiment 1 of the present invention Schematic sectional view seen from the front showing a state in which the filter device according to Embodiment 1 of the present invention is incorporated in a baffle Schematic perspective view of a filter unit installed in a conventional drum type washing machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water receiving tank 2 Washing / dehydration tank 3 Baffle 4 Motor 15 Filter device 16 Door 17 Washing water level 18 Filter attachment part 19 Filter 20 Filter arrangement path 21 Water inlet (opening part)
22 Opening / closing mechanism 23 Water outlet (opening)
25 Opening and closing mechanism

Claims (6)

A water receiving tub for storing washing water, a washing / dehydrating tub enclosed and supported in the water receiving tub so as to rotate forward and backward, and a plurality of baffles provided on an inner peripheral surface of the washing / dehydrating tub And a detachable filter device provided protruding from the inner peripheral surface of the washing and dewatering tub, the filter device having openings on both sides facing the forward and reverse rotation direction of the washing and dewatering tub, One of the openings includes a removable net-like filter that collects lint and foreign matter in the washing water, and an opening / closing mechanism that opens inside the filter device by water pressure and closes against water pressure from the opposite direction. A drum-type washing machine. The drum-type washing machine according to claim 1, wherein the rotation axis of the washing / dehydrating tub is tilted in the elevation direction, and the filter device is disposed on the bottom side of the inner peripheral surface of the washing / dehydrating tub. The drum type washing machine according to claim 1 or 2, wherein the filter device is disposed so as to straddle a bottom surface portion and an inner peripheral surface of the washing and dewatering tub. The drum type washing machine according to any one of claims 1 to 3, wherein the filter device is disposed in the vicinity of the baffle, and is disposed so that an opening side without an opening / closing mechanism faces the baffle. The drum type washing machine according to any one of claims 1 to 4, wherein the filter device has a height from the inner peripheral surface of the washing and dewatering tub lower than a height of the baffle. The drum type washing machine according to any one of claims 1 to 5, wherein the filter device is detachably provided with a net-like filter having an opening / closing mechanism.

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