JP2011229718A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine in which collection efficiency of foreign matters such as a yarn waste is hardly reduced.SOLUTION: A washing machine includes: a first circulation water path 12 having a first filter 15; and a second circulation water path 17 which is in communication with a lower opening 18 at the outer peripheral side of a rotary vane 5, extends upward along the inner surface of a side wall of a washing/spin-drying tub 3, has a discharge opening 19 below an upper opening 14 of the first circulation water path 12, and has a second filter 25 below the discharge opening 19. With this arrangement, even when a washing water level is set low, water can be discharged and circulated with enough water pressure and collection efficiency of foreign matters such as a yarn waste is not reduced.

Description

  The present invention relates to a washing machine, and more particularly to a washing machine in which a washing and dewatering tub is rotatably disposed in an outer tub.

  Conventionally, in this type of washing machine, a circulation water channel 120 extending in the vertical direction is disposed inside the side wall of the washing and dewatering tank 3 provided in the outer tub 2, and a water discharge opening 140 is provided at the upper end of the circulation water channel 120. A net-like lint filter 150 is detachably attached to the outlet of the discharge opening.

  When the rotary blade 5 provided at the bottom is rotated in a state where water is stored in the washing / dehydrating tub 3, the bottom wall of the washing / dehydrating tub 3 is separated from the outside by the pumping action of the back blades 502 formed radially on the back surface thereof. The water that was in the gap with the bottom wall of the tank 2 is sucked up through the water passage opening 200 that opens directly below the rotor blade 5 and fed into the lower end opening 130 of the circulation water channel 120. This water rises in the circulation channel 120 and is discharged into the washing and dewatering tub 3 from the water discharge opening 140. At this time, foreign matters such as lint mixed in the water are collected in the lint filter 150. Is done.

JP 7-255992 A

  However, when the washing capacity is small in the conventional washing machine, washing with the necessary amount of washing water is selected, so when the amount of laundry is small and the washing water level is set to a low position in the washing and dehydrating tub, The pump action by the back blades of the rotor blades is weakened, and water cannot be sufficiently raised to the water discharge opening at the upper end of the circulating water channel, so the amount of water passing through the lint filter is reduced and the collection efficiency of foreign matter is reduced. End up.

  The present invention has been made to solve these problems, and a main object of the present invention is to provide a washing machine that can efficiently collect foreign matter regardless of the level of the washing water level. .

  In order to solve the above-described conventional problems, a washing machine of the present invention is provided with a washing and dewatering tub that is rotatably disposed in an outer tub, and is rotatably provided at the bottom of the washing and dewatering tub. A rotating blade formed with blades. The rotating blade is rotated, and the pumping action of the back blade sucks up water through the water outlet of the bottom wall of the washing / dehydrating tank directly under the rotating blade and circulates it to the washing / dehydrating tank. In the washing machine, the first filter for collecting foreign matter is provided in the upper opening of the circulation channel that communicates with the lower opening provided on the outer peripheral side of the rotor blade and extends upward along the inner surface of the side wall of the washing / dehydrating tub. The first circulating water channel and a lower opening provided on the outer peripheral side of the rotor blade, extending upward along the inner surface of the side wall of the washing / dehydrating tub, and lower than the upper opening of the first circulating water channel And a second filter below the discharge port. It is characterized in that a second water circulation passage provided.

  Thereby, even if it is a case where a washing water level is set low, water can be passed with sufficient water pressure, and it can prevent that foreign material collection efficiency, such as yarn waste, falls.

  According to the washing machine of the present invention, water can be discharged and circulated with sufficient water pressure even when the washing water level is set to be low, and the collection efficiency of foreign matter such as yarn waste is prevented from being lowered. it can.

  In addition, even when the washing water level is set low, water can be discharged and circulated with sufficient water pressure, so that the laundry detergent that has been put in can be reliably dissolved in a short time. Cleaning performance can be improved by operating time of the rotor blades.

Side surface sectional drawing which shows the whole structure of the washing machine of Embodiment 1 of this invention A three-dimensional view of the second circulating water channel as viewed from the inner peripheral side of the washing tub (the front side of the second circulating water channel) A three-dimensional view of the second circulation channel as seen from the back side Side sectional view showing the overall structure of a conventional washing machine

  A first invention includes a washing and dewatering tub that is rotatably disposed in an outer tub, and a rotary blade that is rotatably provided at the bottom of the washing and dewatering tub and has a lower blade formed on the lower surface thereof. In the washing machine for rotating the rotating blades and sucking water through the water flow opening of the bottom wall of the washing / dehydrating tank directly under the rotating blades by the pump action of the back blades and circulating it to the washing / dehydrating tank, the outer peripheral side of the rotating blades A first circulating water channel having a first filter for collecting foreign matter in the upper opening of the circulating water channel communicating with the lower opening provided in the upper wall and extending upward along the inner surface of the side wall of the washing and dewatering tank; The upper opening of the first circulating water channel is provided at a position lower than the upper opening of the first circulating water channel and communicates with the lower opening provided on the outer peripheral side of the washing / dehydrating tank. And a second circulating water channel provided with a second filter. More, wash water level with sufficient water pressure even if it is set lower can be discharged circulating water, foreign matter collection efficiency, such as lint is not lowered. In addition, even when the washing water level is set low, water can be discharged and circulated with sufficient water pressure, so that the laundry detergent that has been put in can be reliably dissolved in a short time. Cleaning performance can be improved by operating time of the rotor blades.

  According to a second aspect of the present invention, in the first aspect, the second circulating water channel is provided with a filter chamber that opens inside the washing and dewatering tub and is fitted with the second filter, and has water channels on both sides of the filter chamber. The water channel is configured to communicate with the discharge port from the lower end opening, and the filter chamber is provided with a water flow port on the side surface of the water channel, and the lower end of the second filter is positioned lower than the water flow port. With this configuration, when the rotor blades are reversed from normal rotation at the time of washing or rinsing, the rotor blades are stopped. At this time, the washing water flows into the circulation channel from the discharge port or the second filter. Even if it flows backward, it is possible to prevent the lint and the like captured by the second filter from flowing back into the circulation channel and flowing out again into the washing and dewatering tub.

  In a third aspect based on the second aspect, the second filter projects inward into the washing / dehydrating tub with respect to the water flow discharged from the filter chamber of the second circulation channel into the washing / dehydrating tub. When the rotating blades are reversed from normal rotation during washing or rinsing, a stop time of the rotating blades occurs. At this time, the washing water flows back into the circulation channel from the discharge port or the second filter. Even so, it becomes difficult to face the flow that flows backward on the yarn collecting surface of the second filter, and the yarn waste captured by the second filter flows back into the circulation channel and enters the washing and dewatering tub. It is possible to prevent reflow.

  According to a fourth aspect of the present invention, in the second or third aspect of the present invention, the water channel is provided with a projecting portion at a position facing the water flow opening so that the flow passage cross-sectional area is narrow, so that the washing / dehydrating tub is disposed from the discharge port. As well as ensuring the discharge water pressure, the amount of water to the second filter can also be ensured. Further, even when the washing water flows backward from the discharge port into the circulation water channel, the washing water flows into the second filter vigorously, so that the efficiency of collecting foreign matters such as yarn waste is not reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not necessarily limited by this embodiment. Further, the parts common to the conventional washing machine are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

(Embodiment 1)
FIG. 1 is a side sectional view showing the overall configuration of the washing machine in the present embodiment, and FIG. 2 is a view of the second circulation channel of the washing machine as viewed from the inner peripheral side of the washing tub (the front side of the second circulation channel). FIG. FIG. 3 is a three-dimensional view of the second circulation channel as seen from the back side.

  An outer tub 2 is supported by a plurality of suspension rods (not shown) inside the outer box 1, thereby preventing vibration of the outer tub 2 from being transmitted to the outer box 1. Inside the outer tub 2, a washing / dehydrating tub 3 (hereinafter simply referred to as a “washing tub”) 3 having a large number of water passage holes around it is rotatable about a rotating shaft 4 provided on the bottom wall thereof. It is pivotally supported.

  A rotating blade 5 is rotatably provided at the bottom of the washing tub 3, and the rotational power of the motor 6 attached to the lower surface of the outer tub 2 is washed through the motor pulley 7, the belt 8, the main pulley 9 and the power switching mechanism 10. It is transmitted to the tank 3 and the rotary blade 5. The power switching mechanism 10 mechanically switches the connection of the drive shaft so that the washing tub 3 and the rotary blade 5 rotate integrally during centrifugal dehydration, and only the rotary blade 5 rotates otherwise. In addition, it is good also as a structure which rotationally drives the washing tub 3 and the rotary blade 5 by a direct drive system.

  A balancer 11 for suppressing vibration at the time of centrifugal dehydration is fixed to the upper end of the washing tub 3, and a first extending from the bottom of the washing tub 3 to a position directly below the balancer 11 in a substantially vertical direction. A circulating water channel 12 is formed. The first circulating water channel 12 has a pumping port 13 opened at the lower end, and a lint filter is detachably attached to the water outlet 14 opened at the upper end to form a first filter portion 15.

  On the other hand, a second circulating water channel 17 extending in the substantially vertical direction from the bottom to the vicinity of the center (middle stage) is formed inside the other side wall of the washing tub 3.

  As shown in FIGS. 2 and 3, the second circulating water channel 17 is attached to the washing tub 3 so as to form a water channel between the side wall of the washing tub and has a pumping port 18 at the lower end. A filter chamber 21 is provided in which a main member 20 having a discharge port opening 19 formed in a side wall portion facing the inner side of the tub and a second filter portion 25 having an approximately box shape opened inside the washing tub 3 are provided. The water passages 22a and 22b are configured to face both sides of the filter chamber 21 and to communicate with the discharge port opening 19 from the pumping port 18 and to the water channels 22a and 22b side of the filter chamber 21. Protruding portions 24a and 24b are provided in the water channels 22a and 22b at positions facing the water flow ports 23a and 23b so that the cross-sectional area of the flow channel becomes narrow in the vicinity of the water flow ports 23a and 23b. It is configured.

  The mesh-like lint filters provided in the first and second filter portions 15 and 25 are for collecting lint and the like.

  When the rotary blade 5 is rotationally driven in a state where a predetermined amount of water is stored in the outer tub 2, a water flow that rotates in a substantially horizontal direction by the stirring blade 501 provided on the upper surface of the rotary wing 5 is washed. Occur within. At the same time, the water between the bottom surface of the washing tub 3 and the bottom surface of the outer tub 2 is sucked up through the water passing portion 26 by the pumping action of the back blades 502 formed radially on the back surface of the rotary blade 5. It is sent to the pumping ports 13 and 18 vigorously via the second circulation channels 12 and 17.

  The first water channel wall member 30 that is attached to the side wall of the washing tub 3 and that forms a water channel (first circulation water channel 12) having a flat cross section extending in a substantially vertical direction between the side wall and the side wall extends directly below the balancer 11. The water outlet 14 is provided at the upper end. The first filter unit 15 is detachably attached to the water outlet 14. A part of the water rising in the first circulation water channel 12 passes through the lint filter of the first filter portion 15 and is jetted into the washing tub 3.

  For example, when the amount of laundry is large and the washing water level is high (for example, the water level H in FIG. 1), the pressure of the water rising in the first circulation water channel 12 is high, and thus the water is discharged from the first filter unit 15. . On the other hand, when the amount of laundry is small and the washing water level is low (for example, the water level L in FIG. 1), the pressure of the water rising in the first circulation water channel 12 is low, and therefore reaches the first filter unit 15. There is little water.

  However, since the second circulating water channel 17 is set to have a shorter distance from the pumping outlet to the water discharging port than the first circulating water channel 12, even if the washing water level is low, the second circulating water channel 17 is not provided in the second circulating water channel 17. The water rises with high pressure. Water passes through the second filter portion 25 with a high pressure without stagnation, and jets into the washing tub 3. At that time, the foreign matter is collected by the lint filter 33.

  The second filter portion 25 is attached to the side wall of the washing tub 3 and is formed of a second water channel wall member 31 that forms a flat water channel (second circulation water channel 17) extending in the vertical direction between the second filter unit 25 and the side wall. A filter chamber 21 that is detachably attached to the front surface and is formed integrally with the second water channel wall member 31 that opens toward the washing tub is provided. The filter chamber 21 includes a filter frame 40 and a lint filter 33. The second filter unit 25 is configured to be installed.

  In addition, the filter frame 40 has a notch portion for passing water into the second filter portion 25 at a position corresponding to the water passage openings 23a and 23b in the filter chamber 21 when the second filter portion 25 is installed. 34 are provided on both sides of the filter frame 40.

  Water channels 22a and 22b are configured to communicate with the discharge port opening 19 from the pumping port 18, and water ports 23a and 23b are provided on the water channel 22a and 22b side of the filter chamber 21, and the water channels 22a and 22b. The projecting portions 24a and 24b are provided at positions facing the water flow ports 23a and 23b so that the cross-sectional areas of the water channels 22a and 22b are narrowed at the water flow ports 23a and 23b. With this configuration, it is possible to ensure the discharge water pressure from the discharge port opening 19 and to secure the amount of water to the second filter unit 25.

  In this configuration, when the water rises in the water channel through the pumping port 18 by the pumping action of the back blade 502 of the rotary blade 5 as described above, a part of the water is passed through the water flow ports 23a and 23b to the filter chamber 21. Then, the foreign matter is removed by the second filter unit 25 and discharged into the washing tub 3.

  As described above, in the washing machine according to the present embodiment, foreign matter contained in the water in the washing tub 3 can be removed regardless of the level of the washing water level.

  In addition, washing water can be discharged and circulated with sufficient water pressure at any water level setting, and the laundry detergent put in the washing and dehydrating tub can be dissolved in a short time. The cleaning performance can be improved in the operation time of the rotor blades.

  As described above, in the washing machine according to the present embodiment, it is possible to ensure the cleaning performance and remove foreign matters contained in the water in the washing tub 3 regardless of the level of the washing water level.

  Further, the water flow ports 23 a and 23 b provided on the side walls in the filter chamber 21 are set at a position higher than the lowermost end portion of the lint filter 33 of the second filter portion 25, and the circulating water enters the second filter portion 25. On the other hand, it is configured to flow in from a higher level.

  As a result, when the reversal operation of the rotary blade 5 during the washing and rinsing operation is stopped or drained, the water in the washing tub 3 enters the discharge opening 19 and moves downward in the second circulation channel 17 from above. Wash water in the washing tub that flows back into the water enters the water inlets 23a and 23b through the water channels 22a and 22b, and flows into the lint filter 33 of the second filter unit 25 to collect foreign matter. .

  In addition, the washing water in the washing tub 3 flows into the filter chamber 21 through the second filter unit 25 when the reversal operation is stopped or drained during the washing and rinsing operation, but the water passages 23a and 23b are provided in the second passage. Since the filter portion 25 is set at a position higher than the lowermost end portion of the lint filter 33, the storage portion 32 is configured in the filter chamber 21 below the water flow ports 23a and 23b.

  By configuring the storage part 32 as described above and making the second filter part 25 into a substantially bag shape so as to protrude into the washing tub, the reversing operation of the rotary blade 5 during the washing and rinsing operation is performed. When stopping or draining, the washing water moves from the inside of the washing tub to the second circulation channel, making it difficult for the lint capture surface of the second filter unit 25 to face the flow and passing the flow velocity. It is possible to obtain a reduction effect, and it is possible to avoid the problem that the lint captured by the filter is returned to the washing tub again, and lint that adheres to the clothing when washing is completed regardless of the level of the washing water level. Can be greatly reduced.

  The filter frame 40 is configured to be attached to and detached from the filter chamber 21. The filter frame 40 has a protruding portion 42 at the lower end, a holding portion 41 having a substantially U shape is formed at the upper end, and the holding portion 41 has a claw. The holding portion 41 can be reversibly displaced by utilizing the elasticity of the resin in the substantially U-shaped portion.

  When attaching the filter frame 40 to the filter chamber 21, first, the protrusion 42 formed at the lower end of the filter frame 40 is inserted into the hole 44 provided in the second channel wall member 31, and the protrusion 42 is a fulcrum. The claw portion 43 provided in the holding portion 41 of the filter frame 40 is rotated until it engages with the locking hole 45 provided in the upper end portion of the filter chamber 21. Accordingly, the claw portion 43 of the holding portion 41 is fitted into the locking hole 45 provided at the upper end portion of the filter chamber 21, and the filter frame 40 is stored in the filter chamber 21 by the claw portion 43 and the protruding portion 42 of the holding portion 41. Be attached.

  When removing the filter frame 40 from the filter chamber 21, the filter frame 40 is tilted forward while pushing the upper portion of the holding portion 41 downward. Then, the engagement between the claw portion 43 and the locking hole 4545 is released, and the filter frame 40 is detached integrally with the lint filter. Thereby, the lint filter can be easily cleaned.

  The lint filter fixed to the filter frame 40 is, for example, a polyester resin fiber subjected to an antibacterial agent treatment.

  In this configuration, the lint is captured and left in a washing tub with poor moisture permeability with dirt and detergent residue containing a lot of moisture, so that the filter can be prevented from becoming moldy and hygienic. A typical washing machine can be provided.

  In the washing machine of the present embodiment, when the rotor blades are rotated during the washing or rinsing process, the water sucked up by the pumping action of the back blades on the lower surface thereof is sent to the outer periphery of the lower surface of the rotor blades. The inside of each circulation channel rises from the pumping port of the 1st and 2nd circulation channel.

  Since the height difference between the pumping port and the discharge port opening of the second circulation channel is smaller than the height difference between the pumping port and the discharge port of the first circulation channel, it was sent to the pumping port with substantially the same pressure. Water rises more vigorously in the second circulation channel. By providing the discharge port opening of the second circulation channel at a position lower than the discharge port of the first circulation channel, even when the washing water level is set low, water passes through the second filter with sufficient water pressure. It is possible to capture lint and the like.

  By the way, normally, the water level stored in the washing and dewatering tub for washing and rinsing is set according to the amount of laundry. When this set water level is low, the amount of water rising up to the outlet of the first circulation water channel at a high position decreases, and the collection efficiency of the first filter decreases. Therefore, the second filter is provided at a position between the pumping port and the water discharge port of the first circulation channel, and the second filter has a structure in which an intermediate opening is provided at a position between the discharge port opening and the pumping port. To do.

  According to this structure, when the water level in the washing and dewatering tub is relatively low, the water that has risen in the second circulation channel passes through the second filter and is discharged into the washing and dewatering tub. Foreign substances can be collected by the second filter.

  In order to prevent the lint filter lint captured when the washing operation is stopped, such as when reversing the rotor blades, while efficiently collecting foreign matter, the second filter is The washing water is designed to protrude into the washing and dewatering tub, and the washing water that flows into and out of the second filter is provided so as not to flow in from the lower water passage through the second filter. .

  The second circulation water channel is attached to the washing / dehydrating tub so as to form a water channel between the side wall of the washing / dehydrating tub, and the pumping port at the lower end is a side wall facing the inner peripheral side of the washing / dehydrating tub. A main box member having a discharge port opening formed therein, and a substantially box-shaped member that houses the second filter, and has a water flow port on two opposing surfaces, below the discharge port opening of the main member. And a filter chamber that is detachably provided. According to this configuration, since the second filter is detachable, cleaning and replacement can be easily performed.

  By providing the second filter so as to protrude into the washing and dewatering tub, the clogged state of the lint filter due to lint or the like can be easily seen by the user, and the filter can be appropriately cleaned. It becomes possible. Moreover, this lint filter is comprised with the fiber which gave the antibacterial process, it can prevent that mold | fungi generate | occur | produce by the captured thread waste etc., and can implement | achieve hygienic washing continuously.

  Also, if the main member is formed by forming a recess that is recessed toward the water channel according to the thickness of the filter frame, the second filter itself is moved forward when the filter frame and the main member are mounted. Therefore, it is possible to prevent the laundry from being caught.

  Further, the second circulating water channel is attached to the washing and dewatering tub so as to form a water channel between the side wall of the washing and dewatering tub, the pumping port at the lower end, and the discharge port opening at the upper end. A main member having an intermediate opening formed in a side wall portion facing the inner peripheral side of the washing / dehydrating tub, and a second filter detachably mounted on the front surface of the intermediate opening includes a lint filter. be able to.

  By providing a discharge port opening in the second circulation channel, it becomes possible to discharge and circulate the washing water with sufficient water pressure at any water level setting. It can be surely dissolved in a short time. The cleaning performance can be improved with the set operating time of the rotor blades.

  As described above, the washing machine according to the present invention can discharge and circulate water with a sufficient water pressure even when the washing water level is set to be low, and the collection efficiency of foreign matters such as lint is reduced. Since it is difficult, it is useful in the field of washing machines.

2 Outer tub 3 Washing / dehydration tub 5 Rotor blade 12 First circulating water channel 17 Second circulating water channel 13, 18 Pumping port (lower opening)
14 Water outlet (upper opening)
15 1st filter part (1st filter)
19 Discharge port opening (Discharge port)
21 Filter chamber 22a, 22b Water channel 23a, 23b Water flow port 24a, 24b Protruding portion 25 Second filter portion (second filter)
40 filter frames

Claims (4)

A washing and dewatering tub that is rotatably disposed in the outer tub, and a rotating blade that is rotatably provided at the bottom of the washing and dewatering tub and has a back blade formed on the lower surface thereof. In the washing machine that sucks up water through the water outlet of the bottom wall of the washing and dewatering tank directly under the rotor blade by the pumping action of the back blade and circulates it to the washing and dewatering tank, in the lower opening provided on the outer peripheral side of the rotor blade A first circulating water channel provided with a first filter for collecting foreign matter at the upper opening of the circulating water channel that communicated and extended upward along the inner surface of the side wall of the washing / dehydrating tank, and provided on the outer peripheral side of the rotor blade It communicates with the lower opening and extends upward along the inner surface of the side wall of the washing / dehydrating tub. A discharge port is provided at a position lower than the upper opening of the first circulation water channel, and a second filter is provided below the discharge port. And a second circulation channel provided. Machine. The second circulating water channel is provided with a filter chamber that opens to the inside of the washing and dewatering tub and is fitted with a second filter, and has water channels on both sides of the filter chamber, and the water channel communicates from the lower end opening to the discharge port. The filter chamber is provided with a water passage on the side surface of the water channel, and the lower end of the second filter is positioned lower than the water passage. The washing machine described. The second filter is provided so as to protrude inward of the washing and dewatering tub with respect to the water flow discharged from the filter chamber of the second circulation channel into the washing and dewatering tub. The washing machine described. The washing machine according to claim 2 or 3, wherein the water channel is provided with a projecting portion at a position facing the water flow opening so as to have a narrow channel cross-sectional area.

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