JP3970294B2 - Drum drying washing machine - Google Patents

Description

  The present invention relates to a drum-type drying washing machine.

  FIG. 1 shows a schematic cross-sectional view of a conventional drum-type drying washing machine. The drum-type drying washing machine includes an outer box 1, a water tank 4 disposed in the outer box 1, a rotating drum 5 disposed in the water tank 4 and containing laundry, and a transparent non-flexible. An external door 3, an automatic door opening / closing mechanism 10 that automatically opens and closes the external door 3, and a drying unit 24 for drying the laundry are provided.

  An outer box opening 1 a is formed on the front surface of the outer box 1. The laundry is taken in and out through the outer box opening 1a. The outer box opening 1a is opened and closed by the external door 3 that is slidable in the vertical direction with respect to the outer box 1 as described above. Further, the operation panel 11 having operation keys and a display unit is provided on the front upper portion of the outer box 1. A control unit 2 for controlling the operation of the drum-type drying washing machine is provided on the back side (water tank 4 side) of the operation panel 11, and a washing process, a rinsing process, a dehydration process, and a drying process are performed by input to the operation panel 11. A process is performed continuously or each process is performed independently. The outer box 1 elastically supports the water tank 4 with a suspension 8 as an example of elastic support means.

  The water tank 4 has a bottomed cylindrical shape provided with a water tank opening 4a that opens facing the outer box opening 1a, and is inclined so that the rear side (bottom side of the water tank 4) is at a low position. Are placed sideways. The water tank opening 4a and the outer box opening 1a are spaced apart from each other. Further, a transparent lid 6 is attached to the water tank by a hinge mechanism so that the water tank opening 4a can be freely opened and closed. The lid 6 is formed with a convex portion 6a that protrudes toward the inside of the rotating drum 5 when the water tank opening 4a is closed. A seal member 41 is disposed on the inner peripheral surface portion of the water tank opening 4a. When the water tank opening 4a is closed by the lid 6, the seal member 41 and the convex portion 6a are brought into close contact with each other. 4a is kept watertight.

  The rotating drum 5 has a bottomed cylindrical shape having a drum opening 5c that opens to face the water tank opening 4a, and the rear side (the bottom side of the rotating drum 5) is at a low position. It is inclined and placed sideways. The rotating drum 5 is connected to a motor 9 via a shaft portion 5e on the back side thereof, and rotates the rotating drum 5 according to the control of the control unit 2. A plurality of small holes 5 a are formed in the entire peripheral wall of the rotary drum 5. This small hole 5a is formed between the space between the water tank 4 and the rotating drum 5 and the space in the rotating drum 5 with washing water (water such as tap water or bath water, or water containing detergent), Allow dry air to circulate. A baffle 5b is provided on the inner wall surface of the rotating drum 5 so as to protrude inward in the radial direction. The baffles 5b are provided at three locations, for example, at 120 ° intervals in the circumferential direction, and the lifting and dropping of the laundry are repeated as the rotating drum 5 rotates. Further, the fluid balancer 5d surrounding the opening 5c of the rotating drum 5 from the outside causes the imbalance caused by the bias of the laundry and the washing water when the rotating drum 5 is rotated by the movement of the sealed fluid inside the fluid balancer 5d. Reduce.

  The drying unit 24 includes a blower 31 and a heating unit 32, and is provided in the upper part of the water tank 4. The positions of the blower 31 and the heating unit 32 in the drying unit 24 are the rear side of the blower 31 and the front side of the heating unit 32 in the front-rear direction of the drum-type drying washing machine. The blower 31 includes a blower blade 34 inside a casing 33, and a fan motor 35 that rotationally drives the blower blade 34 is provided outside the casing 33. The fan motor 35 is directly connected to the blower blade 34, and rotates the blower blade 34 by a direct drive structure. On the other hand, the heating unit 32 includes a heater 36 inside the heater case 26, and the inlet portion of the heater case 26 communicates with the outlet portion of the casing 33 of the blower 31.

  A drain valve 20 that is opened and closed by a drain valve motor (not shown) is installed at the bottom of the water tank 4. By opening the drain valve 20, the water in the water tank 4 is drained to the outside through the flexible drain hose 19.

  In the outer box 1, an air duct 38 is disposed on the front side of the water tank 4. One end of the air duct 38 communicates with the outlet of the heater case 26 of the heating unit 32, and the other end serves as a blowout port 38a in the water tank 4 and at the periphery of the opening 4a. The drum 5 also communicates with the opening 5c. That is, the air duct 38 and the air outlet 38a serve as means for blowing air heated toward the inside of the rotary drum 5 through the opening 5c.

  Further, a dehumidifier 27 is disposed behind the water tank 4 in the outer box 1. This dehumidifier 27 cools and condenses the moisture of the air passing through the inside by pouring water from above, and dehumidifies it. The dehumidifier 27 is hollow as a whole, and has a water inlet 27a and an air outlet 27b in the upper part, and an air inlet 27c that also serves as a water outlet in the lower part. The air outlet 27 b of the dehumidifier 27 is in communication with the inlet of the casing 33 of the blower 31, and the air inlet 27 c is in communication with the lower part in the water tank 4. A water supply device (not shown) is connected to the water inlet 27a.

  According to the drum-type drying washing machine having the above-described configuration, the user opens the lid 6 directly by hand, and then puts the laundry into the rotary drum 5 through the opening 1a and closes the lid 6 directly by hand. . Thereby, the inner peripheral edge 41a of the sealing member 41 is brought into close contact with the peripheral edge of the lid body 6, and the water tank 4 is sealed. When the user operates the operation panel 11 and starts a washing operation in response to a command from the control device 2, first, the automatic door opening / closing mechanism 10 causes the external door 3 to follow the front plate 7 in the upward direction in the figure. Slide. As a result, the outer door 3 draws a substantially arc-shaped movement locus, and the opening 1a of the outer box 1 is closed by the outer door 3 as shown in FIG. Thereafter, when the washing operation is completed, the external door 3 is slid downward along the front plate 7 by the automatic door opening / closing mechanism 10. Thereby, as shown in FIG. 1, the opening 1a of the outer box 1 is opened again. The user opens the lid 6 directly by hand, and then takes out the laundry from the rotating drum 5.

During the drying operation, the blower 31 is rotationally driven and the heater 36 is energized and heated. As a result, the air sent by the blower 31 is heated by the heater 36 while passing through the heater case 26, and the high-temperature air passes through the blower duct 38, the blowout port 38 a, and the opening 5 c inside the rotary drum 5. Air is blown toward the laundry to dry the laundry. The hot and humid air that has absorbed the moisture of the laundry in the rotating drum 5 is discharged from a small hole formed in the peripheral surface of the rotating drum 5 to a space between the rotating drum 5 and the water tub 4. The space between the rotating drum 5 and the water tank 4 communicates with the space around the dehumidifier 27 as described above, and was cooled by the cold water flowing in the dehumidifier 27 while flowing around the dehumidifier 27. The dehumidifier 27 is dehumidified by dew condensation on the wall. The dehumidified air is sent out again into the rotary drum 5 through the heater 36 by the blower 31. In this way, the laundry in the rotary drum 5 is dried. Such a drum-type drying washing machine is disclosed in Patent Document 1, for example.
Japanese Patent Laid-Open No. 2001-149689

  However, in the drum-type drying washing machine, since the rotating drum 5 is rotated at a low speed in the drying process, and the laundry is lifted by the baffle 5b and then dropped, the movement is repeated. Fine dust such as lint and cotton dust comes out from the laundry. The fine dust enters the casing 33 by air circulation by the drying unit 24.

  Normally, in the washing process or the rinsing process, foreign matter such as lint in the washing water is removed by a filter unit (not shown) provided in front of the drain valve 20, but in the drying process, the foreign matter gets on the air passing through the drying unit 24. The foreign matters that circulate in this manner are not removed, and they adhere to a shaft (not shown) that connects the blower blades 34 and the fan motor 35, resulting in rotational resistance of the blower blades 34 and the shaft. In some cases, the air blowing capacity of 31 was reduced.

  Accordingly, an object of the present invention is to provide a drum-type drying washing machine that is highly reliable for long-term use without foreign matters entering the blower on the circulating air in the drying process.

In order to solve the above problems, a drum-type drying washing machine of the present invention includes a water tub, a rotating drum that is rotatably arranged in the water tub, a dehumidifying unit that dehumidifies air guided from the rotating drum, A heating unit for heating the air dehumidified in the dehumidifying unit, and a blowing unit for guiding the air in the rotating drum to the dehumidifying unit and blowing the air heated in the heating unit into the rotating drum; In a drum-type drying washing machine comprising: filter means arranged between the rotary drum and the air blowing unit and arranged on a path on the suction port side that is upstream of the airflow generated by the air blowing unit during the drying process The filter means is disposed so as to be immersed in the washing liquid supplied into the water tub during a washing process or a rinsing process, and generates a water flow in the washing liquid to remove foreign matters attached to the filter means. Cleaning means wherein the cleaning means is provided on the outer surface of the rotating drum, it is characterized in that to generate the water flow based on the rotation of the rotary drum.

  According to the above configuration, by providing such a cleaning means, the filter means is cleaned every time the washing process or the rinsing process, and is always kept in a state of good water permeability and air permeability. The ability does not decrease.

Further, it said cleaning means in washing have step or rinsing step, since to generate water flow to rotate with the rotation of the rotary drum, the cleaning means, and those which do not require a driving force for generating a separate water flow be able to.

In the drum-type drying washing machine having the above-described configuration, it is preferable that the filter unit is disposed on the bottom surface of the water tank and the cleaning unit is provided on the back surface of the rotating drum. The inner peripheral surface of the tank is a gentle arc shape, and for along the rotational direction of the rotary drum, the foreign matter is the direction of rotation, such as lint sunk in the water tank bottom by the water flow due to the rotation of the rotary drum in the washing step or rinsing step However, since the filter means is disposed on the bottom surface of the water tank, it is difficult for foreign matters to reattach to the filter means.

  Moreover, in the drum-type drying washing machine having the above-described configuration, it is preferable that the filter means is arranged in an arc shape centering on a rotation axis of the rotary drum. Since the cleaning means rotates around the rotation axis of the rotating drum, the water flow flows in an arc shape. Therefore, by arranging the filter means along the arc shape, a configuration with high foreign matter removal efficiency can be achieved.

  Further, in the drum-type drying washing machine having the above-described configuration, the cleaning unit is configured by a blade member that protrudes in the rotation axis direction of the rotary drum so that a side toward the rotation direction of the rotary drum forms an obtuse angle. Further, the blade member may be protruded by being inclined in an axial direction perpendicular to the rotation axis of the rotary drum. If it does in this way, the wind noise of a blade member can be reduced in the spin-drying | dehydration process which rotates a rotating drum at high speed.

  Moreover, it is preferable that the said ventilation part is distribute | arranged so that it may be immersed in the washing | cleaning liquid water supplied in the said water tank at the time of a washing process or a rinse process. If it does in this way, adhesion to the ventilation part of the small waste thread which cannot be removed by a filter means in a drying process can be removed and washed with washing water at the time of a washing process or a rinse process.

  Since the present invention is equipped with a cleaning means for automatically removing foreign matters such as lint attached to the filter means, the filter means is cleaned at every washing step or rinsing step, and always has good water permeability and air permeability. Since the state is maintained, the ability to remove foreign matters by the filter does not decrease.

Hereinafter, the drum type dry washing machine of the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 3 is an external perspective view of the drum-type drying washing machine according to the embodiment of the present invention. This drum-type drying washing machine is covered with an outer box 1 and has an outer box opening 111 (see FIG. 4) to be described later on its front surface, and a door 103 for opening and closing the outer box opening 1a. Is rotatably attached by a hinge mechanism. Note that reference numeral 11 in FIG. 3 denotes an operation panel.

  FIG. 4 shows a schematic cross-sectional view taken along line F1-F1 in FIG.

  An outer box opening 111 is formed on the front surface of the outer box 1. The outer box opening 111 is opened and closed by the door 103 that can rotate with respect to the outer box 1 as described above. Further, the operation panel 11 having operation keys and a display unit is provided on the front upper portion of the outer box 1. A control unit 2 for controlling the operation of the drum-type drying washing machine is provided on the back side (water tank 4 side) of the operation panel 11, and a washing process, a rinsing process, a dehydration process, and a drying process are performed by input to the operation panel 11. A process is performed continuously or each process is performed independently. The outer box 1 elastically supports a water tank 4 to be described later by a suspension 8 as an example of elastic support means.

  In the outer box, a bottomed cylindrical water tank 4 having a water tank opening 118 that opens to face the outer box opening 111 is disposed. The water tank 4 is disposed so as to be inclined such that the rear side of the central axis L1 passing through the center of gravity in each cross section perpendicular to the cylinder axis is lowered.

  In the water tank 4, there is disposed a bottomed cylindrical rotating drum 5 having a drum opening 126 that opens to face the water tank opening 118. The rotating drum 5 is connected to a motor 9 on the back side thereof, and is rotatably supported in the water tank 4. The rotary drum is arranged so as to be inclined so that the rear side of the central axis (rotary axis) L2 is lowered. A plurality of small holes 5 a are formed in the entire peripheral wall of the rotating drum 5. The small holes 5 a circulate washing water and air between the space between the water tank 4 and the rotating drum 5 and the space in the rotating drum 5. Further, the central axis L2 of the rotating drum 5 is disposed above the central axis L1 of the water tank 4.

  A blower duct 39 through which hot air to be supplied into the rotary drum 5 flows is disposed in the lower part of the space in the water tank 4. The front end portion of the air duct 39 communicates with the air outlet 40 located between the lower edge of the water tank opening 118 and the lower edge of the opening 126 of the rotary drum 5. Accordingly, the air flowing in the direction of the arrow D <b> 1 through the air duct 39 is blown out into the rotary drum 5 through the air blowing port 40. The rear end of the air duct 39 is connected to a discharge port 158 of a fan case 134 described later.

  A heating device 132 is disposed inside the air duct 39. The heating device 132 includes a heater case 37 and a sheathed heater 38 that is accommodated in the heater case 37. The heater case 37 is composed of a metal main body and a heat-resistant resin frame for fixing the main body, and the front end is connected to the air duct 39. The sheathed heater 38 can heat the air in the water tub 4 and can also heat the water in the water tub 4 because the sheathed heater 38 is disposed in a region immersed in the water in the water tub 4.

  The water tank opening 118 facing the outer box opening 111 is provided on the front surface of the water tank 4. A packing 119 made of an elastic body such as rubber or soft resin is fixed to the water tank opening 118. As a result, when the door 103 is closed, the door 103 comes into close contact with the packing 119, so that the liquid in the water tank 4 can be prevented from leaking out of the water tank 4. Further, a lower end portion of a water supply duct 120 for supplying washing water into the water tank 4 is connected to the upper part of the water tank 4. Meanwhile, the upper end of the water supply duct 120 is connected to the lower part of the detergent case 14. Further, a tap water supply channel 41 and a bath water supply channel 42 are connected to the detergent case 14. A water supply valve 43 is provided in the middle of the tap water supply channel 41, while a bath water pump 44 is provided in the middle of the bath water supply channel 42.

  In the lower part of the water tank 4, there is provided a drain port 110 that communicates with the air duct 39 and drains the washing water in the water tank 4. The drain port 110 is located on the downstream side of the blower 131. The drain port 110 is connected to the upper end of a drain duct 21. On the other hand, the lower end of the drain duct 21 is connected to a drain hose 23 via a filter device 22. The liquid flowing through the drain duct 21 can flow into the drain hose 23 or the circulation hose 46 after passing through the filter device 22. Since this filter device 22 removes foreign matter such as lint in the washing water flowing through the drainage duct 21, entry of foreign matter into the drainage hose 23 or the circulation hose 46 can be prevented.

The drain hose 23 is provided with a drain valve 25 that is opened and closed by a drain motor 24 . The drain valve 25 is controlled to be opened when the washing water in the drain duct 21 flows to the drain hose 23 and to be closed when the washing water in the drain duct 21 flows to the circulation hose 46. The upper end of the circulation hose 46 is provided at the lower part of the front surface of the water tank 4 and is connected to a circulation nozzle 47 provided in the rotary drum 5. On the other hand, the lower end portion of the circulation hose 46 is connected to a circulation pump 45 disposed behind the filter device 22. The circulation pump 45 sucks the wash water in the drain duct 21 through the filter device 22 and discharges the sucked wash water to the circulation hose 46. By operating such a circulation pump 45, the washing water that has flowed out of the water tub 4 from the drain port 110 can be returned to the rotary drum 5 again after passing through the filter device 22. In the washing process, while washing water is circulated, foreign matters are removed and the washing water is kept clean.

  A drying system 106 is provided at the entrance of the drain 110 for communicating with the blower duct 39 and draining the washing water in the water tank 4. The drying system 106 includes a blower 131 corresponding to a conventional blower 35, a heating device 132 corresponding to a conventional heater 36, a blower duct 39, and a heat exchanger 133 for dehumidification described later (see FIGS. 5 and 6). ing. Further, a dehumidifying path 164 between the dehumidifying heat exchanger 133 and the blower 131 is provided with a net-like filter 160 knitted with metal yarn. The blower 131, the heating device 132, the dehumidifying heat exchanger 133, the filter 160, and the blower duct 39 each include a center line L1 of the water tank 4, and more than a plane including a horizontal axis perpendicular to the center line L1. It is provided on the lower side. Thereby, each part of the drying system 106 and members such as the filter 160 are washed by being immersed in washing water at the time of washing or rinsing. The heating device 132 is an example of a heating unit, the dehumidifying heat exchanger 133 is a dehumidifying unit, the blower 131 is an air blowing unit, and the filter 160 is an example of a filter unit.

  FIG. 5 is a schematic sectional view taken along line F2-F2 of FIG.

  The dehumidifying heat exchanger 133 is connected to the upstream side of the blower 131 attached to the lower rear portion of the water tank 4. More specifically, the dehumidifying heat exchanger 133 is disposed in an area between the inner peripheral surface of the water tank 4 and the outer peripheral surface of the rotating drum 5 that is immersed in washing water during the washing process. The dehumidifying heat exchanger 133 includes a metal plate 49 that is inclined so that the front side is raised, and a stainless steel fixing member 50 attached to the end of the metal plate 49 (see FIGS. 5 and 7). And have. A cooling nozzle 51 is disposed above the front end of the metal plate 49. During the drying process, the cooling water supplied from the cooling nozzle 51 flows on the upper surface of the metal plate 49 to cool the metal plate 49. As a result, the cooling water and the metal plate 49 cool the air to effectively condense moisture contained in the air flowing therethrough.

  The blower 131 is attached to the lower rear surface of the water tank 4. The blower 131 communicates with the water tank 4 via the suction port 162 and sucks air in the water tank 4 as the blower fan 135 rotates. The suction port 162 is an example of a route on the suction port side.

  FIG. 6 is a schematic sectional view taken along line F3-F3 in FIG.

  The water tank 4 has a convex shape downward, and a blower 131 is arranged so as to overlap the convex shape. The blower 131 has an outer periphery constituted by a fan case 134, and a blower fan is included therein. The fan case 134 extends in the left-right direction of the convex shape below the water tank 4, and the heating device 132 and the dehumidifying heat exchanger 133 disposed in the convex shape are respectively connected to the suction port 162 and the discharge port 158. Communicated through.

  The center C1 of the water tank opening 118 is on the top surface side of the outer case 1 with respect to the center C2 of the drum opening 126. That is, the water tank opening 118 is eccentric to the top surface side of the outer case 1 with respect to the drum opening 126.

  FIG. 7 shows a schematic view of the bottom of the water tank as seen from the front.

  Inside the convex shape below the water tank 4, a heating device 132 is disposed on the right side, and a heat exchanger 133 for dehumidification is disposed on the left side. The heating device 132 and the dehumidifying heat exchanger 133 are arranged so as to be parallel to the central axis L1 of the water tank 4. As will be described later, the dehumidifying heat exchanger 133 is used to circulate the circulating air. The heating device 132 is provided on the upstream side and on the downstream side.

As shown in FIGS. 4 to 6, during the drying process, the air sent by the blower 131 is heated through the heating device 132 as shown by an arrow D <b> 5 (see FIG. 4), and then the water tank opening. As shown by an arrow D1 (see FIG. 4) from 118, the air is blown into the rotary drum 5. Here, the air that has become highly humid by evaporating moisture from the wet laundry in the rotating drum 5 passes through a small hole 5a on the peripheral surface of the rotating drum 5 and is a space between the inner surface of the water tank 4 and the outer surface of the rotating drum 5. And flows along the heat exchanger 133 for dehumidification as shown by an arrow D2 (see FIG. 5). The humid air is cooled and dehumidified by the dehumidifying heat exchanger 133 and cooling water. The dehumidified air enters the blower 131 through the suction port 162 and is repeatedly circulated through the discharge port 158 to the heating device 132 as shown by an arrow D4 (see FIG. 6) to dry the laundry. Progresses. In addition, in FIG. 10 , the flow of the air at the time of an above-described drying process is shown typically.

  As described above, the laundry is dried by circulating the air in the water tub 4 through the dehumidifying heat exchanger 133, the blower 131, and the heating device 132 in order during the drying process. At this time, fine dust such as cotton waste from the laundry enters the fan case 134 and adheres to the inside of the fan case 134, one end of the shaft 152, or the blower fan 135. During the rinsing process, since the inside of the fan case 134, one end of the shaft 152, or the blower fan 135 is immersed in the washing water flowing into the fan case 134, dust such as cotton waste is washed away with the washing water and removed. Is done. As a result, the air path in the fan case 134 is not narrowed, the resistance to the rotation of the blower fan 135 is not increased, and the air for drying the laundry can be circulated constantly and efficiently. .

  FIG. 8 is a detailed view of the periphery of the filter 160 in FIG.

  A blower 131 is attached to the lower rear portion of the water tank 4. The blower 131 is connected to the water tank 4 at a discharge port 158 which is an outlet of the blower, and the discharge port 158 is connected to the blower duct 39.

  FIG. 9 is a detailed view of the periphery of the filter 160 in FIG.

The blower 131 includes a fan case 134, a blower fan 135 rotatably disposed in the fan case 134, a fan motor 136 that rotationally drives the blower fan 135, and one end connected to the blower fan 135. In addition, the other end portion has a shaft 152 connected to the fan motor 136 and a seal receiving portion provided so as to surround the shaft 152 in the radial direction. The shaft 152 receives the rotational driving force of the fan motor 136 and rotates together with the blower fan 135. As described above, one end of the shaft 152 is disposed so as to be immersed in the washing water flowing into the fan case 134 during the washing process or the rinsing process. The blower fan 135 blows the laundry during the drying process, but can be controlled to rotate during the washing process or the rinsing process to generate a water flow.

  The blower 131 is connected to the water tank 4 through an inlet 162 that is an inlet of the blower. In the space between the suction port 162 and the metal plate 49, a mesh-like filter 160 knitted with metal thread is provided, and the air in the water tank 4 does not pass through the filter 160 so that the suction port 162 is opened. The filter 160 is attached so as to cover the inlet 162 so as not to pass through.

  As shown in FIG. 7, the filter 160 is disposed on the bottom surface of the water tank 4, and is symmetrical with respect to the center line L <b> 3 of the drum-type drying washing machine in a plan view when viewed from the inside of the water tank 4. It has a substantially arc shape and faces the inlet 162 (see FIG. 5) from the water tank on the left side of FIG. As shown in FIG. 6, the blower fan 135 is provided at the suction port 162 so as to face the suction port 162. FIG. 7 shows a heat exchanger 133 for dehumidification provided on the route to the inlet 162.

Therefore, the air (washing water) flowing in the direction perpendicular to the paper surface of FIG. 7 through the dehumidifying path 164 (see FIG. 5) to the inlet 162 passes through the filter 160 and enters the blower 131. Inflow. In the washing process or the rinsing process, the washing water flows in the water tank 4 and the blower 131, and foreign matters such as lint contained in the washing water are collected by passing through the filter 160, and are fed into the blower 131. Intrusion of foreign matter is prevented. Further, the inner peripheral surface of the tank is a gentle arc shape, because and along the rotational direction of the rotary drum, foreign matter such as lint sunk in the water tank bottom by the water flow due to the rotation of the rotary drum rocking to its direction of rotation However, since the filter 160 is disposed on the bottom surface of the water tank 4, it is difficult for foreign matters to reattach to the filter 160. In the drying process, air flows in the water tank 4 and the blower 131, and foreign matters contained in the air are collected by passing through the filter 160, thereby preventing foreign matters from entering the blower 131. Can be removed.

  In order to collect foreign matter such as washing water carried by the blower 131 or lint in the air as described above, the filter 160 is in a range to which the suction force by the blower fan 135 can be applied, that is, the water tank of FIG. It is sufficient to cover only the portion facing the inlet 162 shown on the lower left side of FIG. However, in the actual washing process, rinsing process or drying process, the lint that has been carried by washing water or air accumulates on the filter 160 over a long period of time. A lot of lint accumulates in the opposing region, which causes a reduction in suction efficiency.

  Therefore, in this embodiment, the filter 160 is expanded not only to the portion facing the inlet 162 shown on the lower left side of the water tank 4 in FIG. 7 where the suction force by the blower fan 135 directly acts, but also to the right side not facing the blower 131. It is arranged. That is, the filter 160 is disposed over an area larger than the opening area of the suction port 162 when viewed from the central axis L1 direction of the water tank 4. In such a configuration, the lint is initially attached only to the region facing the suction port 162 of the blower 131, but the suction force of the portion to which the lint is attached decreases as the operation time becomes longer. To do. For this reason, lint does not adhere any further to the part where the suction force is lost and moves to the surrounding part where the suction force is still maintained, so that the lint attachment area gradually increases. The yarn spreads and eventually concentrates on the left side in FIG. 7 and lint adheres.

  However, in this embodiment, since the filter 160 is arranged to the right side in FIG. 7 as described above, even if the suction force on the left side in FIG. Since the right side portion to which the lint is not attached can be used as a filter, the filter effect can be maintained for an extremely long time.

  Further, the filter 160 used in the drum-type drying washing machine according to this embodiment is not a simple flat plate, but as clearly shown in FIGS. 8 and 9, the direction of the water tank 4, that is, the dehumidifying heat exchanger 133. Is provided with a bulging portion 160a that bulges in the direction of the metal plate 49 that constitutes the plate. In this way, by slightly inflating the filter 160 in the direction of the water tank 4, a ventilation path is formed between the bottom surface of the water tank 4 and the filter 160 to ensure the long-term usability of the filter 160.

  The filter 160 is not formed by knitting a metal thread into a mesh shape, but may be a plastic molded product or a metal plate punched out of small holes. In some cases, burrs and return occur, and lint and cotton dust get caught and block the small holes. Therefore, it is desirable that the filter 160 has a net structure in which wires are knitted in a mesh shape. In the case of such a mesh structure, not only is there no fear of burrs and returns as described above, but the ratio of the area of the small holes in the area of the plate surface (ie, the aperture ratio) can be increased, and as an excellent filter The ability of can be demonstrated.

  The wire constituting the filter 160 may be a resin wire in addition to a metal wire, but a metal wire is preferable because its surface is smooth and lint and cotton are not easily caught. Also, if the crossing part of the mesh of the wire rod is fixed, such as a metal coating made of knitted metal wire, the foreign matter is caught between the crossed wire rods or the crossing part moves. The occurrence of defects such as roughness fluctuations can be prevented.

  In this case, the mesh of the filter 160 may be 1 mm to 3 mm. This makes it easier to get entangled in the shaft connecting the blower fan and the fan motor, and collects relatively large foreign matter such as lint in the wash water that greatly affects the decline in the blowing capacity of the blower. It is possible to prevent early clogging of the filter 160 due to small foreign matter.

  As described above, in the drum-type drying washing machine according to this embodiment, the blower fan 135, the heating sheath heater 38, and the metal plate 49 are immersed in the washing water during the washing process or the rinsing process. The adhering cotton dust and the like can be washed with washing water or rinsing water, but the blowing section, the heating section, and the dehumidifying section may be provided at an upper location where the washing water is not applied, if necessary.

  By providing the filter 160 in this way, the inconvenience that foreign matters such as lint and cotton dust get entangled with the blower fan 135 or its shaft 152 is avoided. Further, since the region where the filter 160 is provided as described above is not only the portion facing the suction port 162 where the suction force is directly applied by the blower fan 135 but also the portion away from the blower fan 135, the blower fan over a long period of time. The suction force of 135 can be strongly maintained.

However, in this embodiment, the filter 160 eventually becomes clogged eventually, and the suction force of the blower fan 135 cannot be maintained indefinitely. In that case, it is necessary for the operator of the washing machine drum type dry washing machine to remove the lint and the like adhering to the filter 160.

  In this embodiment, the clogging of the filter 160 is automatically eliminated. However, in order to more reliably remove the clogging of the filter 160 by a single washing process or a rinsing process, a water tank at the back of the rotary drum 5 is used. 4 is provided with a blade 170 that cleans the surface of the filter 160 by generating a water flow as the rotary drum 5 rotates.

  FIG. 11 is a schematic diagram of the back side of the rotating drum 5 facing the water tank 4, FIG. 12A is a schematic diagram of the blade viewed from the arrow A in FIG. 11, and FIG. 12A is from the arrow B in FIG. A schematic view of the seen blade is shown.

On the side facing the water tank 4 on the back surface of the rotary drum 5, a blade 170 is attached at a position that is 180 degrees rotationally symmetric. Blade 170, as shown in FIG. 12, the bottom surface of the rotating drum 5, in a state of being inclined by 45 degrees with respect to the diametrical direction of the rotary drum 5, and is fixed by a rivet 172 (see FIG. 12 (b)) . The blade 170 further includes, as shown in FIG. 12 (a), it is inclined 30 degrees to the rotation axis of the rotary drum 5. In order to prevent the blade 170 from generating wind noise by high-speed rotation of 1000 rpm in the direction of arrow D6 of the rotary drum 5 in the dehydration process, the 45 ° inclination angle and the 30 ° inclination angle are provided. In the present embodiment, the blade 170 is inclined with respect to the diameter direction of the rotating drum 5 and is also inclined with respect to the rotation axis of the rotating drum 5. By adjusting the inclination angle of one of the drums 5 in the rotation axis direction, wind noise during the dehydration process can be reduced.

  The blade 170 rotates about the rotation axis of the rotating drum 5 by the rotation of the rotating drum 5 during the washing process or the rinsing process to generate a water flow in the washing water. As indicated by D8, the light passes through the projection surface of the filter 160. The water flow of the washing water due to the rotation of the blade 170 acts on the foreign matter adhering to the surface of the filter 160 and pulls the foreign matter away from the filter 160. Since the separating action is particularly greater near the trajectory through which the blade 170 passes, the filter 160 in this embodiment may have a concave shape in a region E close to the center side of the rotary drum 5 as shown in FIG. Good. Since the blade 170 can be configured to have a plurality of distances from the rotation axis of the rotary drum 5, the filter 160 can be made wider, and such a dent region is also provided. A cleaning effect can be imparted to E as well.

  The blade 170 is composed of a plurality of metal pieces fixed to the bottom surface of the rotary drum 5, but is preferably provided at a rotationally symmetric position so as not to break the rotational balance of the rotary drum 5. Alternatively, it may be provided in at least one place for correcting imbalance based on caulking of the peripheral wall of the rotating drum 5. The blade 170 is not necessarily made of metal, and may be, for example, resinous.

  In the present embodiment, the filter 160 is formed in an arc shape with a substantially equal left / right distribution centered on the center line L3 in the left / right direction of the washing machine. This is for increasing the area of the filter 160 and keeping the cleaning period of the filter 160 longer based on the accumulation of foreign matter at the portion facing the inlet 162 provided on the lower left side of the water tank 4. . Therefore, if the clogging of the filter 160 does not occur so much, it is not always necessary to secure a wide filter area as in this embodiment. For example, the filter 160 is disposed only on the lower left side of the water tank 4 in FIG. Is also possible.

The schematic longitudinal cross-sectional view seen from the side of the conventional drum-type drying washing machine. The schematic longitudinal cross-sectional view seen from the side in another position of the drum type dry washing machine of FIG. 1 is an external perspective view of a drum-type drying washing machine according to an embodiment of the present invention. Sectional drawing cut | disconnected by the F1-F1 line | wire in FIG. Sectional drawing cut | disconnected by the F2-F2 line | wire in FIG. Sectional drawing cut | disconnected by the F3-F3 line | wire in FIG. Schematic of the water tank inner bottom face of the drum type drying washing machine concerning one embodiment of the present invention. FIG. 5 is a detailed view around the filter in FIG. 4. FIG. 6 is a detailed view around the filter in FIG. 5. Schematic which shows the circulation circuit of the air at the time of a drying process. Schematic of the side facing the water tank on the back of the rotating drum. (A) is the schematic of the braid | blade seen from the arrow A of FIG. 11, (b) is the schematic of the braid | blade seen from the arrow B of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer box 4 Water tank 5 Rotating drum 131 Blower 132 Heating device 133 Heat exchanger 135 for dehumidification Blower fan 160 Filter 162 Suction port 170 Blade

Claims (6)

A water tank, a rotating drum rotatably disposed in the water tank, a dehumidifying part for dehumidifying air guided from the rotating drum, a heating part for heating the air dehumidified in the dehumidifying part, and the rotation The air in the drum is guided to the dehumidifying unit and the air heated by the heating unit is blown into the rotating drum, and between the rotating drum and the air blowing unit and during the drying process. In a drum-type drying washing machine provided with filter means arranged in a path on the suction port side that is the upstream side of the air flow generated by the air blowing unit,
The filter means is disposed so as to be immersed in the washing liquid supplied into the water tub during a washing step or a rinsing step, and generates a water flow in the washing liquid to remove foreign matters attached to the filter means. wherein the cleaning means, the provided on the outer surface of the rotating drum, the drum type drying washing machine, characterized in that to generate the water flow based on the rotation of the rotary drum.   The drum-type drying washing machine according to claim 1, wherein the filter means is disposed on a bottom surface of the water tank, and the cleaning means is provided on a back surface of the rotating drum.   The drum-type drying washing machine according to claim 2, wherein the filter means is arranged in an arc shape centering on a rotation axis of the rotary drum.   The said cleaning means is comprised from the blade member which protrudes in the rotating shaft direction of the said rotating drum so that the side which goes to the rotating direction of the said rotating drum at the time of a spin-drying | dehydration process makes an obtuse angle. Drum-type drying washing machine.   5. The drum-type drying washing machine according to claim 4, wherein the blade member is inclined and protrudes in an axial direction perpendicular to a rotation axis of the rotating drum.   The drum type according to any one of claims 1 to 5, wherein the air blowing section is disposed so as to be immersed in a washing liquid supplied into the water tub during a washing step or a rinsing step. Drying washing machine.

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