JP6357453B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a washing and drying machine provided with means for spraying a laundry solution with a high concentration onto a laundry.

  A laundry dryer is known in which a detergent is dissolved in a small amount of water at the beginning of the washing process to produce a high-concentration detergent solution, which is sprayed on the laundry and then supplied to a specified water level to perform the washing process. . For example, Patent Literature 1 describes a laundry dryer that generates a mist of a high-concentration detergent solution and sprays the mist on the laundry at the beginning of the washing operation to increase the cleaning power.

JP 2011-245035 A

  However, Patent Document 1 describes a circulation pump that pumps a high-concentration detergent solution, but does not disclose a specific configuration. If washing water or the like remains in such a circulation pump, there is a problem that the generation of odor and mold is promoted.

  Then, this invention solves the said conventional problem, and it aims at providing the washing-drying machine which can suppress the residual water of a circulation pump and can suppress generation | occurrence | production of an odor and mold | fungi.

  The present invention includes, as an example, an outer tub supported in a housing, an inner tub enclosed in the outer tub and containing laundry, a drive device that rotationally drives the inner tub, a blower, A blower outlet for blowing air from a blower into the inner tub, a first circulation channel connecting a bottom of the outer tub and an upper portion of the outer tub, and washing water stored in the bottom of the outer tub, A second circulation flow path different from the first circulation flow path connecting the bottom of the outer tub and the upper part of the outer tub with the first circulation pump sprayed on the laundry via the first circulation flow path And a second circulation pump having a flow rate lower than that of the first circulation pump for spraying the detergent stored in the bottom of the outer tub onto the laundry via the second circulation flow path, A circulation flow path communicates with a flow path between the blower and the blower outlet, turns on the blower, and passes through the second circulation flow path. The air is sent to the second circulation pump.

  ADVANTAGE OF THE INVENTION According to this invention, the washing-drying machine which can suppress the residual water of a circulation pump and can suppress generation | occurrence | production of an odor and a mold can be provided.

It is an external appearance perspective view which shows the washing-drying machine which concerns on this invention. It is a side view which shows roughly the internal structure of the housing | casing of the washing-drying machine which concerns on this invention. It is a rear view which shows roughly the internal structure of the housing of the washing / drying machine which concerns on this invention. It is a perspective view which shows the internal structure of the housing of the washing / drying machine which concerns on this invention. It is sectional drawing which shows the lower part of the outer tub of a washing-drying machine. It is a perspective view which shows the bottom part in a washing-drying machine. It is a top view which shows the bottom part in a washing-drying machine. It is a top view which shows a 1st circulation pump. The state which pulled out the foreign substance removal filter from the filter case to the middle is shown, (a) is the perspective view seen from this front right side, (b) is the perspective view seen from this front upper side. It is the sectional view on the AA line of FIG. It is a front view of a 2nd circulation pump. FIG. 12 is a cross-sectional perspective view taken along line BB in FIG. 11. It is a front view which shows the bottom part in a washing-drying machine. It is a perspective view when it sees from the back side of the circulation flow path outer tank cover of a washing-drying machine. It is a top view which shows the internal structure of the housing | casing of the washing / drying machine of this invention. It is a front view which shows the connection state of an outer tank cover and a ventilation unit. A hot air duct is shown, (a) is a perspective view, (b) is a side view, (c) is a bottom view, and (d) is a sectional view taken along the line CC of (c). It is the DD sectional view taken on the line of FIG. It is a block diagram of a control device of a washing dryer according to the present invention. It is a flowchart which shows operation | movement of the washing-drying machine which concerns on this invention.

  Next, a drum-type washing / drying machine (washing / drying machine) according to an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the following description, the front-rear, up-down, left-right directions are based on the front-rear, up-down, left-right directions shown in FIG.

FIG. 1 is an external perspective view showing a washing / drying machine according to the present invention.
As shown in FIG. 1, the washing / drying machine S includes a housing 1 that forms an outer shell. The housing 1 includes left and right side plates 1a and 1b, a front cover 1c, a back cover 1d (see FIG. 2), an upper cover 1e, a lower front cover 1f, and a base 1h. In addition, the left and right side plates 1a and 1b of the housing 1 are coupled with a U-shaped upper reinforcing material (not shown), a front reinforcing material (not shown), and a rear reinforcing material (not shown), and a base 1h. A box shape is included.

  Near the center of the front cover 1c, there is provided a door 9 that closes an input port for taking in and out laundry. An operation panel 6 including a power switch 39, operation switches 13 and 15, a display 14 and the like is provided at the upper center of the front cover 1c. The operation panel 6 is electrically connected to a control device 60 (see FIG. 2) provided at the lower part of the housing 1.

FIG. 2 is a side view schematically showing the internal structure of the casing of the washing / drying machine of the present invention.
As shown in FIG. 2, the washer / dryer S includes a casing 1, an outer tub 2 that is supported in a vibration-proof manner in the casing 1, and a rotating drum 3 (inner that is rotatably supported in the outer tub 2. A tank), a drum motor 4 (rotating device, see FIG. 3) for rotationally driving the rotary drum 3, a blower unit 51, a first circulation pipe 52 (first circulation flow path), a first circulation pump 53, A second circulation pipe 54 (second circulation flow path), a second circulation pump 55, and a foreign matter removal filter 56 are provided.

  The outer tub 2 has a cylindrical shape, includes the rotating drum 3 coaxially, and has an open front surface. An outer tank cover 2 d that enables water storage in the outer tank 2 is provided at the opening on the front surface. In addition, the lower side of the outer tub 2 is supported in a vibration-proof manner by a damper 5 fixed to the base 1h. The upper side of the outer tub 2 is supported by an upper reinforcing material (not shown) via a coil spring. A rubber bellows 10 is provided at the opening of the outer tub 2 (outer tub cover 2d), and the outer tub 2 is sealed with water by closing the door 9.

  The rotating drum 3 is a cylindrical washing and dewatering tub that is rotatably supported, and has a large number of through holes 3s (see FIG. 4) for water flow and ventilation on the outer peripheral wall and the bottom wall thereof. The end face is provided with an opening 3a for taking in and out the laundry. A fluid balancer 3c that rotates integrally with the rotary drum 3 is provided on the outer peripheral side of the opening 3a. Further, a lifter 3 b for lifting the laundry is provided on the inner peripheral wall of the rotating drum 3. Further, the rotation center axis of the rotary drum 3 is inclined so as to be substantially horizontal or to be higher on the opening 3a side.

  The blower unit 51 includes a blower 51a and a heater 51b, and is fixed to a reinforcing material (not shown) in the housing 1. The blower 51a includes a driving motor 24a (fan motor), a fan impeller 24b (see FIG. 18), and a fan case 24c. The fan case 24c has a built-in heater 51b for heating the air sent from the fan impeller 24b. The heater 51b is composed of a PTC (Positive Temperature Coefficient) heater or the like.

  A discharge port 51 c of the blower unit 51 is connected to the hot air duct 26. The hot air duct 26 is connected to a rubber bellows tube 27, and the bellows tube 27 is connected to an air outlet 2s provided in the outer tank cover 2d via a bellows tube joint 28.

  The 1st circulation piping 52 is a flow path which connects the bottom of the outer tank 2 and the upper part of the outer tank 2, and is comprised by the bellows hoses 52a and 52b. Here, the upper portion of the outer tub 2 is a height position at which the detergent liquid can be sprayed from above the clothes when the detergent liquid is sprayed on the clothes, and a height position at which the washing water can be sprayed from above the clothes. It is. The bellows hose 52 a has an upstream end connected to the drain port 21 provided at the bottom of the outer tub 2, and a downstream end connected to the first circulation pump 53 via the foreign matter removal filter 56. . The bellows hose 52b (partially omitted) has an upstream end connected to the first circulation pump 53 and a downstream end connected to the outer tank cover 2d. The washing water is configured to be sprayed in a shower shape from the upper part of the outer tub cover 2d into the rotary drum 3.

  The first circulation pump 53 generates a suction force that sucks up the washing water accumulated in the bottom of the outer tub 2 through the first circulation pipe 52 and spreads the washing water on the clothes in the rotary drum 3. A large flow rate of wash water of 80 liters (80 L / min) can be circulated.

  The second circulation pipe 54 is a flow path that connects the bottom of the outer tub 2 and the top of the outer tub 2, and is constituted by pipes 54 a and 54 b. Here, the upper part of the outer tub 2 is a height position at which the detergent liquid can be sprayed from above the clothes when the detergent liquid is sprayed on the clothes. The pipes 54a and 54b are made of a flexible material such as silicone rubber. The pipe 54 a has an upstream end connected to the foreign matter removal filter 56 (filter case 23, see FIG. 4), and a downstream end connected to the second circulation pump 55. The pipe 54b has an upstream end connected to the second circulation pump 55 and a downstream end connected to the outer tank cover 2d (partially omitted). Further, the pipes 54a and 54b are constituted by a flow path having a smaller diameter than the bellows hoses 52a and 52b. The high concentration detergent solution means a detergent solution having a concentration (for example, 8 times) higher than the concentration of the detergent solution in the washing step.

  The second circulation pump 55 sucks up the high-concentration detergent liquid stored at the bottom of the outer tub 2 through the second circulation pipe 54 and generates a suction force to blow out from the outlet 2s. A high-concentration detergent solution having a flow rate lower than that of the pump 53 (for example, 1 to 3 liters per minute (1 to 3 L / min)) can be passed.

  A drying duct 29 is arranged inside the back surface of the housing 1. The drying duct 29 is connected to an intake port provided at the rear portion of the outer tub 2 via a rubber bellows hose 29a. A known water-cooled dehumidifying mechanism (not shown) is built in the drying duct 29. A heat pump may be used instead of the heater and the water-cooled dehumidifying mechanism.

  The drain hose 19 has an upstream end connected to the foreign matter removal filter 56 (filter case 23, see FIG. 4) and a downstream end connected to the drain valve 25. The drain hose 19 extends downstream of the drain valve 25 and extends outside the machine.

FIG. 3 is a rear view schematically showing the internal structure of the casing of the washing / drying machine of the present invention.
As shown in FIG. 3, a water supply port 2 a for supplying water and detergent into the outer tub 2 is provided at the rear side of the outer tub 2. The water supply port 2 a is connected to the detergent tray 7 (see FIG. 1) and a rubber bellows hose 17.

  The drum motor 4 is attached to the outer center of the rear end face of the outer tub 2. The rotating shaft of the drum motor 4 passes through the outer tub 2 and is coupled to the rotating drum 3.

  On the upper rear portion of the outer tub 2, water supply related parts such as a water supply electromagnetic valve 11, a bath water absorption pump 12, and a water level sensor 34 (see FIG. 13) are provided. The top cover 1e is provided with a water supply hose connection port 11a from a water tap and a water absorption hose connection port 12a for remaining hot water in the bath. The water level sensor 34 (see FIG. 15) detects the water level in the outer tub 2 and is provided at the lowermost part of the rear end face of the outer tub 2, and is a known air trap (not shown) or tube (not shown). It is configured by combining.

  The water supply electromagnetic valve 11 includes a main water supply electromagnetic valve 11b, a finishing agent (softening agent) water supply electromagnetic valve 11c, a cooling water supply electromagnetic valve 11d, a mist water supply electromagnetic valve 11e, and the like.

  The main water supply electromagnetic valve 11b supplies tap water from the water supply hose connection port 11a to the outer tub 2 through a detergent charging chamber (not shown) of the detergent tray 7 (see FIG. 1). The tap water supplied to the detergent charging chamber is poured into the outer tub 2 through the bellows hose 17 as a detergent liquid together with the introduced detergent. At this time, the detergent liquid is stored on the bottom of the outer tub 2 without being applied to the clothing while passing along the inner wall surface of the outer tub 2.

  The finishing agent water supply electromagnetic valve 11c supplies tap water from the water supply hose connection port 11a to a finishing agent charging chamber (not shown) of the detergent tray 7 (see FIG. 1) through a water supply path (not shown). The tap water poured into the finishing agent charging chamber is stored at the bottom of the outer tub 2 through the bellows hose 17 together with the finishing agent (softener, softener).

  The cooling water supply electromagnetic valve 11d supplies tap water from the water supply hose connection port 11a to a water cooling / dehumidifying mechanism (not shown) of the drying duct 29 through a water supply path (not shown).

  The mist water supply electromagnetic valve 11e supplies tap water from the water supply hose connection port 11a to the upstream side of the outlet 2s (see FIG. 2) through the water supply pipe 71 (see FIG. 15).

4 is a perspective view showing the internal structure of the housing of the washing and drying machine according to the present invention, FIG. 5 is a cross-sectional view showing the lower part of the outer tub of the washing and drying machine, and FIG. 6 is a perspective view showing the bottom of the washing and drying machine. 7 is a plan view showing a bottom portion in the washing / drying machine, and FIG. 8 is a plan view showing a first circulation pump.
As shown in FIG. 4, the 1st circulation pump 53 and the 2nd circulation pump 55 are provided under the outer tank 2, and are being fixed to the base 1h made from a synthetic resin.

  The pipe 54 a has an upstream end connected to the side surface of the filter case 23 of the foreign matter removal filter 56. The pipe 54b extends to the left side from the second circulation pump 55, passes through the upper part of the filter case 23, passes through the left side surface and the upper surface of the outer tub cover 2d, and is connected to the hot air duct 26.

  The bellows hose 52b has an upstream end connected to the pump casing 42 of the first circulation pump 53, and a downstream end connected to a connection port 35b provided on the front side of the outer tank cover 2d.

  As shown in FIG. 5, a recessed portion 2 f that protrudes downward is formed in the lower portion of the outer tub 2. A partition wall W continuous from the inner peripheral surface 2t of the outer tub 2 is formed on the upper portion of the recessed portion 2f so as to cover approximately half of the width of the recessed portion 2f. The partition wall W extends along the outer peripheral surface 3t of the rotating drum 3 in a direction opposite to the rotation direction R when the rotating drum 3 is dehydrated. The drain port 21 and the inflow port 18 are formed at positions shifted from the center in the width direction of the recess 2 f in the rotation direction R of the rotary drum 3, and the partition wall W is disposed above the drain port 21 and the inflow port 18. It has become.

  The depression 2f is formed when the water is discharged from the through hole 3s (see FIG. 4) of the rotating drum 3 toward the inner peripheral surface of the outer tub 2 by centrifugal force due to the rotation of the rotating drum 3 during dehydration. The water flowing in the same direction as the rotation direction R is received and guided to the drain port 21. The partition wall W is designed to dam the water that has entered the recess 2f so that it does not return to the outer tub 2 again.

  As shown in FIG. 6, the bellows hose 52a has a downstream end connected to the filter case 23 to which the foreign matter removing filter 56 is attached, and an upstream end connected to the bottom of the outer tub 2 (see FIG. 5). It is connected to the provided drain port 21 (see FIG. 5).

  One end of a bellows hose 57 is connected to the pump casing 42. The other end of the bellows hose 57 is connected to an inlet 18 (see FIG. 5) provided at the bottom of the outer tub 2.

  As shown in FIG. 7, the first circulation pump 53 is a centrifugal pump, and includes a pump casing 42, an impeller 46 (also referred to as a runner, see FIG. 8), and a circulation pump motor 47. Yes.

  The pump casing 42 includes a first casing 42a formed integrally with the filter case 23, and a second casing 42b connected to the first casing 42a.

  As shown in FIG. 8, the 1st casing 42a is formed in a substantially cylindrical body, and the impeller 46 is arrange | positioned at the inner side. The first casing 42a has a suction port 43 formed on the side surface, and a discharge port 44 and a discharge port 45 formed on the upper surface. The filter case 23 is formed with a water inlet port 23a and a water outlet port 23b that extend rearward. The water inlet port 23a is located above the water outlet port 23b.

  The suction port 43 is a substantially circular through hole that connects the filter case 23 and the first casing 42 a, and is configured coaxially with the impeller 46 of the first circulation pump 53.

  The first circulation pump 53 discharges the washing water received in the first casing 42 a via the suction port 43 to either the discharge port 44 or 45 according to the rotation direction of the impeller 46. Yes.

  The impeller 46 rotates leftward as viewed from the suction port 43 side (hereinafter sometimes referred to as forward rotation), so that the washing water is sent to the bellows hose 52b (see FIG. 4) via the discharge port 44. ing. More specifically, when the impeller 46 rotates in the forward direction, the washing water flowing in from the suction port 43 is pushed out toward the inner peripheral wall of the first casing 42 a by the pumping action by the centrifugal force of the impeller 46. Then, the washing water flows while rotating counterclockwise in the first casing 42a. However, the washing water collides with a partition wall (not shown) in which the radial gap between the inner peripheral wall of the first casing 42a and the impeller 46 becomes narrow, and the flow direction is changed. And flows out from the discharge port 44.

  Further, when the impeller 46 rotates clockwise (hereinafter sometimes referred to as reverse rotation), the impeller 46 collides with a partition wall (not shown) in which the radial gap between the inner peripheral wall of the first casing 42a and the impeller 46 becomes narrow, and the flow direction is changed. Instead, the wash water flows out of the discharge port 45. Thus, by changing the rotation direction of the first circulation pump 53, the discharge direction of the first circulation pump 53 can be changed without using a special flow path switching mechanism.

FIGS. 9A and 9B show a state in which the foreign substance removal filter is pulled out partway from the filter case, where FIG. 9A is a perspective view seen from the front right side, and FIG. 9B is a perspective view seen from the front upper side.
As shown in FIG. 9A, the filter case 23 has a cylindrical accommodating portion 23c in which the foreign matter removing filter 56 is accommodated. In addition, the filter case 23 is disposed so as to be inclined so that the front side faces upward. The foreign matter removal filter 56 is provided with a knob 56a. After the foreign matter removal filter 56 is housed in the housing portion 23c, the knob 56a is rotated in a predetermined direction and screwed into the filter case 23, thereby removing the foreign matter removal filter. 56 is fixed in the accommodating portion 23c. The foreign matter removing filter 56 has a substantially semicircular shape for collecting foreign matters and has a collecting portion 56b that is elongated in the axial direction of the accommodating portion 23c.

  As shown in FIG. 9 (b), the collecting portion 56b includes left and right side walls 56c extending along the inner wall surface of the accommodating portion 23c, a bottom wall 56d connecting the lower edge portions of the left and right side walls 56c, and a tip. The front wall 56e is connected to the side wall 56c and the bottom wall 56d at the (front end) and is inclined upward toward the tip, and is configured to be concave so that the upper surface side is open.

  A plurality of substantially rectangular collection holes 56f are formed in the side walls 56c, 56c, the bottom wall 56d, and the front wall 56e by being partitioned in a lattice pattern. Each collection hole 56f has substantially the same opening area.

10 is a cross-sectional view taken along line AA in FIG.
As shown in FIG. 10, a connection pipe 23 d connected to a pipe 54 a extending from the second circulation pump 55 is formed on the right side surface (circumferential surface) of the filter case 23 so as to protrude sideways. The opening 23d1 of the connecting pipe 23d is formed at a position facing the collecting portion 56b of the foreign matter removal filter 56, specifically, a position facing the right side wall 56c. Thus, by arranging the connecting pipe 23d at a position overlapping the foreign matter removal filter 56, foreign matter can be prevented from flowing into the pipe 54a. Moreover, since it can suppress that a foreign material flows into the 2nd circulation pump 55, it can suppress that the 2nd circulation pump 55 locks.

  By the way, when the connection pipe 23d is formed on the bottom surface (position facing the bottom wall 56f) of the filter case 23 (when the connection pipe 23d is formed downward), foreign substances such as sand are likely to accumulate on the bottom surface (bottom wall 56f). Foreign matter is liable to enter the pipe 54a. In the present embodiment, by forming the connecting pipe 23d on the side surface of the filter case 23, it is difficult for foreign matter to enter the pipe 54a.

  Further, the attachment position of the connecting pipe 23d is preferably a position where the user himself can remove the foreign object if the foreign object is clogged. Since the filter case 23 is installed so that the front side is facing upward, if the position of the connecting pipe 23d is too far, there is no room for the water level of the detergent liquid accumulated in the bottom of the outer tub 2, and the clothes are temporarily hydrated. When the water level suddenly falls below the specified water level, a large amount of air enters the second circulation pump 55 and the possibility of pump lock increases. Thus, it is preferable to determine the attachment position of the connecting pipe 23d in consideration of the point of being able to reduce the cleanability by the user himself and the possibility of pump lock.

Moreover, the opening area A1 of one collection hole 56f of the foreign substance removal filter 56 is set to ² mm × 3.5 mm = 7 mm ² , for example. On the other hand, the connecting pipe 23d has a diameter of 6 mm, for example, and the flow path cross-sectional area A2 of the connecting pipe 23d is set to πr ² = 3.14 × 3 mm ² ≈28 mm ² . The pipe 54a is also set to 6 mm as in the pipe 54a. In this way, the passage cross-sectional area A2 is set to an area sufficiently larger than the opening area A1, thereby preventing foreign matter from being clogged in the pipe 54a.

  Further, the gap C between the side wall 56c of the foreign matter removal filter 56 and the accommodating portion 23c of the filter case 23 is set to 1.4 mm, for example. Thus, by setting the gap C to a distance shorter than the short side (2 mm) of the collection hole 56f, it is possible to prevent a large foreign substance from flowing through the gap C and clogging the pipe 54a.

11 is a front view of the second circulation pump, FIG. 12 is a cross-sectional perspective view taken along the line BB of FIG. 11, and FIG. 13 is a front view showing a bottom portion in the washing / drying machine.
As shown in FIG. 11, the second circulation pump 55 includes a casing 55a, an impeller 55b (also referred to as a runner, see FIG. 12), and a circulation pump motor 55c (see FIG. 12). .

  The casing 55a is made of synthetic resin, and has a cylindrical case body 55d in which the impeller 55b and the circulation pump motor 55c are accommodated, and a lid body 55e attached to one end surface in the axial direction of the case body 55d. And is configured. The lid 55e is fixed by, for example, heat welding to the case main body 55d.

  The lid body 55e includes a suction pipe 55f to which the pipe 54a (see FIG. 4) is connected, and a discharge pipe 55g to which the pipe 54b (see FIG. 4) is connected. Further, the suction pipe 55f is located on the near side and the discharge pipe 55g is located on the far side with respect to the direction perpendicular to the plane of FIG.

  As shown in FIG. 12, a cylindrical protrusion 55h that protrudes outward in the axial direction is formed at the center of the lid 55e. A suction port 55i through which high-concentration detergent liquid is sucked is formed on the side surface (circumferential surface) of the protruding portion 55h. The flow passage cross-sectional area of the suction port 55i is configured in substantially the same manner as the flow passage cross-sectional area A2.

  An impeller 55b is located between the projecting portion 55h and the circulation pump motor 55c, and the high-concentration detergent liquid sucked from the suction port 55i is introduced between the blade 55b1 and the blade 55b1 of the impeller 55b. It is discharged toward the discharge port 55j of the discharge pipe 55g by the rotational force of the wheel 55b. The flow passage cross-sectional area of the discharge port 55j is configured in substantially the same manner as the flow passage cross-sectional area A2.

  By the way, if air remains in the pump, the flow rate becomes unstable and the sound becomes loud during the initial drive. Therefore, as shown in FIG. 13, in the second circulation pump 55, the suction port 55i is arranged below the discharge port 55j in the vertical direction (vertical direction), in other words, suction is on the lower side with respect to discharge. Therefore, the air in the second circulation pump 55 is easily released, the flow rate at the initial driving can be immediately stabilized, and the noise can be reduced.

Further, in the second circulation pump 55, the flow passage cross-sectional area A3 (indicated by dots in FIG. 12) surrounded by the upper edge portions 55b2 and 55b2 of the blades 55b1 and 55b1 adjacent to each other in the impeller 55b and the lower end edge 55h1 of the protruding portion 55h. For example, the fan-shaped region is set to about 28 mm ² in the same manner as the channel cross-sectional area A2 of the pipe 54a. Similarly, the suction pipe 55f, the suction port 55i, the discharge pipe 55g, the discharge port 55j, and the pipe 54b are set to φ6 mm (channel cross-sectional area A2).

  Thus, by setting the cross section of the flow path downstream of the collection hole 56f of the foreign matter removal filter 56 to be sufficiently larger (A2, A3) than the opening area A1, the second circulation flow path 54 (pipe 54a) is set. , 54b) and the second circulating pump 55 can be prevented from becoming clogged.

FIG. 14 is a perspective view of the washing / drying machine as viewed from the back side of the circulation channel outer tub cover.
As shown in FIG. 14, the discharge port 44 is connected to the circulation flow path 2e provided in the inner peripheral wall of the outer tank cover 2d through the bellows hose 52b. The circulation channel 2e is connected to a nozzle 2g provided at the edge of the opening 2d1 of the outer tank cover 2d. The nozzle 2g is formed in a slit shape along the circumferential direction, and supplies washing water into the rotating drum 3 in a thin film shape.

  When the circulation pump motor 47 (see FIG. 7) of the first circulation pump 53 rotates forward with the drain valve 25 (see FIG. 2) closed, the washing water in the outer tub 2 is discharged from the drain port 21 (see FIG. 2). The foreign matter is removed by the foreign matter removing filter 56 in the filter case 23 (see FIG. 4) through the bellows hose 52a (see FIG. 4). Thereafter, the washing water from which the foreign matter has been removed is discharged from the discharge port 44 by the power of the first circulation pump 53 and sent into the circulation flow path 2e, and then sprayed from the nozzle 2g into the rotary drum 3 (see FIG. 2). Is done.

  When the circulation pump motor 47 of the first circulation pump 53 rotates in the reverse direction, the washing water (detergent liquid) in the outer tub 2 passes through the bellows hose 52a (see FIG. 4) from the drain port 21 (see FIG. 2), and is filtered. Foreign matter is removed by the foreign matter removal filter 56 in the case 23. Thereafter, the washing water (detergent liquid) from which the foreign matter has been removed is discharged from the discharge port 45 (see FIG. 8) by the power of the first circulation pump 53 and returns to the outer tub 2 through the bellows hose 57. By operating in this way, a detergent dissolving step for generating a high concentration detergent solution can be performed at the bottom of the outer tub 2.

FIG. 15 is a top view showing the internal structure of the casing of the washing / drying machine of the present invention. In FIG. 15, the internal structure is shown in the right half, and the state seen through from the top is shown in the left half.
As shown in FIG. 15, the washing / drying machine S includes tap water supply means 70 that supplies tap water to the hot air duct 26. The tap water supply means 70 is provided with a water supply pipe 71 that supplies tap water upstream of the outlet 2s (see FIG. 2). One end of the water supply pipe 71 is connected to the mist water supply electromagnetic valve 11 e (see FIG. 3) of the water supply electromagnetic valve 11, and the other end is connected to the hot air duct 26 on the downstream side of the blower unit 51.

  The mist water supply electromagnetic valve 11e is opened to supply tap water to the hot air duct 26 through the water supply pipe 71, and by operating the blower unit 51, the tap water supplied to the hot air duct 26 is mist. And blown out from the outlet 2s.

FIG. 16 is a front view showing a connection state between the outer tub cover and the blower unit. FIG. 16 illustrates a state where the outer tub cover 2d and the blower unit 51 are connected.
As shown in FIG. 16, a bellows pipe joint 28 is integrally molded with the outer tank cover 2d. In the bellows pipe joint 28, a connection port 28a to which the bellows pipe 27 is connected is formed on the front surface side of the outer tub cover 2d. The connection port 28a faces the radially outer side (upper right side) of the outer tub cover 2d.

  The air outlet 2s is formed at the edge of the opening 2d1 of the outer tub cover 2d and faces the radial center of the outer tub cover 2d.

  The bellows tube 27 extends in the vertical direction, has a lower end connected to the connection port 28 a and an upper end connected to the hot air duct 26.

  The hot air duct 26 extends rearward from the upper end of the bellows tube 27 and is connected to the blower unit 51. A drying filter unit 58 that removes dust and the like during the drying operation is provided on the upstream side of the blower unit 51.

17A and 17B show the hot air duct, where FIG. 17A is a perspective view, FIG. 17B is a side view, FIG. 17C is a bottom view, and FIG. FIG. 17 illustrates a single unit of the warm air duct 26 from which the upstream air blowing unit 51 and the downstream bellows tube 27 are removed.
As shown in FIGS. 17A and 17B, the hot air duct 26 includes a duct portion 26a having an air passage therein, a connection opening 26b to which an outlet of the blower unit 51 (see FIG. 2) is connected, And a connection opening 26c to which the bellows tube 27 is connected. The connection opening 26b has a substantially elliptical shape (flat shape), and the connection opening 26c has a circular opening.

  Further, in the hot air duct 26, a connection portion 26d to which the pipe 54b of the second circulation channel 54 is connected and a connection portion 26e to which the water supply pipe 71 of the tap water supply means 70 is connected protrude in the vicinity of each other. It is formed as follows. The connecting portion 26d and the connecting portion 26e have a tubular shape protruding toward the side and are arranged in parallel to each other. Thus, by projecting the connecting portions 26d and 26e toward the side (leftward), it is possible to prevent the air path of the drying filter unit 58 located above from being obstructed.

  As shown in FIG. 17C, nozzles 26d1, 26e1 projecting into the flow path Q in the duct portion 26a are formed at the tips of the connection portions 26d, 26e. Further, a supply port 26d2 through which a high-concentration detergent solution is discharged is formed on the peripheral surface (side surface) at the tip of the nozzle 26d1. Further, a supply port 26e2 through which tap water is discharged is formed on the peripheral surface (side surface) of the tip of the nozzle 26e1. The opening area of the supply port 26d2 is formed larger than the opening area of the supply port 26e2, in other words, the supply amount of the high-concentration detergent liquid is larger than the supply amount of tap water.

  As shown in FIG. 17 (d), the nozzle 26e1 is located upstream of the nozzle 26d1 with respect to the flow of wind by the blower 51a. That is, the tap water supply port 26e2 is located upstream of the high concentration detergent solution supply port 26d2. The supply ports 26d2 and 26e2 face the downstream side of the wind flow. That is, the supply ports 26d2 and 26e2 face the side substantially opposite to the side to which the wind (air) from the blower unit 51 is supplied. Thereby, it is possible to prevent the supply of the high-concentration detergent liquid from the supply port 26d2 from being hindered by the wind pressure, and similarly, the supply of tap water from the supply port 26e2 is hindered by the wind pressure. Can be prevented.

18 is a cross-sectional view taken along the line DD of FIG.
As shown in FIG. 18, when the blower unit 51 is driven, the fan impeller 24b is rotated by the motor 24a, and high-speed wind is generated. The high-speed wind blows out from the outlet 2s through the hot air duct 26, the bellows pipe 27, and the bellows pipe joint 28. When the second circulation pump 55 (see FIG. 4) is driven simultaneously with the blower unit 51, the high-concentration detergent liquid generated at the bottom of the outer tub 2 is pumped up and supplied through the pipes 54a and 54b (see FIGS. 2 and 4). It is supplied to the flow path Q in the warm air duct 26 from the opening 26d2 (see FIG. 17C). The high-concentration detergent liquid supplied from the supply port 26d2 comes into contact with the high-speed wind supplied from the blower unit 51, so that the high-concentration detergent liquid becomes mist. The high-concentration detergent solution that has been misted is blown out into the rotary drum 3 from the outlet 2s through the hot air duct 26, the bellows tube 27, and the bellows tube joint 28.

And it diffuses in the rotating drum 3 with high-speed wind, adheres to the laundry, and allows the high-concentration detergent solution to penetrate into the laundry substantially uniformly. The amount of the high-concentration detergent solution is preferably set according to the air volume and the wind speed in order to efficiently mist and spread the laundry uniformly. For example, when the air volume is 1.5 m ³ / min and the wind speed is 100 m / s, about 0.05 to 3.0 L / min is preferable.

  Further, when the supply of the high concentration detergent liquid from the supply port 26d2 is completed, the second circulation pump 55 is stopped. Then, the mist water supply electromagnetic valve 11e is opened, and the tap water flows through the water supply pipe 71 (see FIG. 15) and is supplied from the supply port 26e2. The tap water supplied from the supply port 26e2 comes into contact with the high-speed wind supplied from the blower unit 51, so that the tap water becomes mist. The misted tap water passes through the hot air duct 26, the bellows pipe 27, and the bellows pipe joint 28 to wash away the high-concentration detergent solution adhering to the wall surface of the flow path Q to the outlet 2s. At this time, since the tap water supply port 26e2 is located upstream of the high concentration detergent solution supply port 26d2, the entire flow path to which the high concentration detergent solution adheres can be washed.

FIG. 19 is a block diagram of the control device for the washer / dryer according to the present invention.
As shown in FIG. 19, the control device 60 includes a microcomputer 50, a drive circuit 64, and the like, and also includes an on / off signal of the operation switches 13 and 15 and an input circuit 65 for output signals from various sensors. Further, the control device 60 acquires various information signals in the user's operation, washing process (washing process, rinsing process, dehydration process), and drying process via the microcomputer 50. Further, the control device 60 is configured such that the microcomputer 50 rotates the drum motor 4 through the drive circuit 64, opens / closes the water supply electromagnetic valve 11 and the drain valve 25, rotates the first circulation pump 53 and the second circulation pump 55, and blows air. It controls ON / OFF of rotation of the motor 24a of the unit 51 and energization of the heater 51b. Further, the control device 60 controls the display 14, the light emitting element 66 and the buzzer 67 in order to inform the user of information related to the washing / drying machine S.

  The drum motor 4 is connected to an inverter circuit (not shown) for supplying AC power of variable voltage and variable frequency, and DC power supplied from a rectifier circuit (not shown) by this inverter circuit. Is converted into three-phase AC power with variable voltage and variable frequency, and the drum motor 4 functions as a motor. When the drum motor 4 is mechanically rotated by inertial rotation of the rotating drum 3 by being electrically disconnected from the inverter circuit, it functions as a generator and supplies three-phase AC regenerative power to the blower unit. At this time, a regenerative braking force is applied to the rotating drum 3.

The control device 60 is activated when the power switch 39 is pressed and the power is turned on, and executes a basic control processing program for washing and drying as shown in FIG. FIG. 20 is a flowchart showing the operation of the washing / drying machine according to the present invention.
As shown in FIG. 20, in step S100, the control device 60 performs state check and initial setting of the washing / drying machine.

  In step S110, the control device 60 lights up the display 14 (see FIG. 1) of the operation panel 6 (see FIG. 1), and sets a washing course according to an instruction input from the operation switch 13 (see FIG. 1). When no instruction is input, the standard washing course or the previous washing course is automatically set.

  In step S120, the control device 60 determines whether or not the operation switch (start switch) 15 of the operation panel 6 is turned on. If the start switch is turned on (Yes), the process proceeds to step S130, where the start switch is turned on. If it is not ON (No), the start switch instruction input is monitored. Further, when the start switch is turned on, the control device 60 reads the corresponding operation pattern from the operation pattern database based on the input operation course, and proceeds to step S130.

  In step S <b> 130, the control device 60 detects the weight (cloth amount) of the laundry put into the rotary drum 3. This cloth amount is detected by the drum motor while the rotary drum 3 is rotated in one direction in the dry cloth state before the washing water is supplied while the speed is increased from a specified rotational speed to another specified rotational speed. 4 is performed based on the integrated drive current value. Then, the control device 60 performs a map search based on the detected cloth amount, water conductivity (hardness) by a hardness sensor (not shown), water temperature by a temperature sensor 62 (see FIG. 19), etc. Determine the time and rotational speed of the rotating drum. Then, the control device 60 displays the obtained detergent amount and operation time on the display 14 of the operation panel 6.

  In step S140, the control device 60 executes a high-concentration detergent liquid generation step. The user pulls out the detergent tray 7 and puts in the detergent tray 7 the amount of detergent powder displayed on the display 14. The control device 60 waits for a time necessary for the user to put the detergent into the detergent tray 7 (for example, 1 minute), and then opens the main water supply electromagnetic valve 11 b of the water supply electromagnetic valve 11 to supply water to the detergent tray 7. The powder detergent passes through the bellows hose 17 together with the water supplied, and flows down from the water supply port 2a of the outer tub 2 to the recessed portion 2f of the outer tub 2.

  At this time, since water from the water supply port 2 a flows along the inner peripheral surface of the outer tub 2, water and detergent do not flow into the rotating drum 3. Thereby, it is possible to prevent the occurrence of discoloration and uneven color due to the undissolved powder detergent directly touching the laundry.

  When the detergent is a liquid detergent, a room for liquid detergent is provided in the detergent tray 7 in order to prevent the high-concentration liquid detergent from flowing into the outer tub 2 before the main water supply electromagnetic valve 11b is opened. And is supplied to the outer tub 2 while being diluted with the water supplied from the main water supply electromagnetic valve 11b.

  And the control apparatus 60 will stop water supply, if a detergent melt | dissolves and it supplies water to a water level. The amount of water supply is controlled according to the amount of detergent (cloth amount), and is set lower than the water level in the washing step (S180), for example. The water supply amount is controlled by the water level sensor 34. This amount of water is set, for example, so that the detergent concentration is 10 times the maximum. Here, the detergent concentration is defined as 1 times the standard concentration designated by the detergent manufacturer (in a general powder synthetic detergent, the concentration when 20 grams of detergent is dissolved in 30 liters of water).

  And the control apparatus 60 energizes the circulation pump motor 47, reversely rotates the 1st circulation pump 53, and performs detergent melt | dissolution. Water and detergent accumulated in the bottom of the outer tub 2 and the depression 2f pass from the drain port 21 through the bellows hose 52a, the water inlet port 23a, the foreign matter removing filter 56, and the filter case 23, and from the suction port 43 into the first casing 42a. to go into. Then, the gas is discharged from the discharge port 45 and circulates through the bellows hose 57 and returns from the inlet 18 to the recessed portion 2f. The detergent is stirred by the blades of the impeller 46 of the first circulation pump 53, so that the dissolution proceeds and a high-concentration detergent liquid is generated. The time for dissolving the detergent is set to 10 seconds, for example.

  By the way, fine air (bubbles) may remain in the second circulation channel 54 and the second circulation pump 55. Residual air is drawn by the power of the first circulation pump 53 by dissolving the detergent in step S140. As a means for extracting residual air, the second circulation pump 55 is first rotated for a predetermined time (for example, 5 seconds) and then stopped for a predetermined time (for example, 2 seconds) when the second circulation pump 55 is initially driven. Residual air may be discharged by driving the pump 55 intermittently and changing the water level.

  In step S150, the control device 60 executes shower spraying of the high concentration detergent solution. That is, the control device 60 rotates the first circulation pump 53 in the forward direction so that the high-concentration detergent liquid accumulated in the bottom of the outer tub 2 and the recess 2f is discharged from the drain port 21 to the bellows hose 52a, the water inlet port 23a, It passes through the foreign matter removal filter 56 and the filter case 23 and enters the first casing 42 a from the suction port 43. And it discharges from the discharge port 44, passes through the bellows hose 52b and the circulation flow path 2e, and is supplied into the rotary drum 3 from the nozzle 2g in a shower shape. For example, when 10 liters of high-concentration detergent solution is produced, 7 liters out of 10 liters are supplied over a predetermined time (for example, 2 to 3 seconds).

  In step S160, the control device 60 executes mist spraying of the high-concentration detergent solution. That is, the control device 60 drives the second circulation pump 55 so that the high-concentration detergent solution remaining in the bottom of the outer tub 2, the recess 2f, and the filter case 23 passes through the pipe 54a. The air is sucked into 55, discharged from the second circulation pump 55 through the pipe 54b, and supplied to the hot air duct 26 on the upstream side of the air outlet 2s. After the high-concentration detergent solution is discharged from the nozzle 26 d 1 of the hot air duct 26, the blower unit 51 (fan motor 24 a and heater 51 b) is energized to supply hot air to the hot air duct 26. As a result, the hot air from the blower unit 51 comes into contact with the high-concentration detergent liquid supplied from the supply port 26d2, so that the high-concentration detergent liquid becomes mist. For example, when 10 liters of high-concentration detergent solution is produced, the remaining 3 liters are supplied in mist form.

  Thus, the washing power of the laundry can be improved by making the high-concentration detergent liquid mist with warm air and sprinkling the mist of the high-concentration detergent liquid with high temperature on the laundry. Moreover, a detergent can be effectively mixed with tap water by using warm air. In addition, it is not necessarily limited to warm air, You may make it mist-form by applying the wind which is not heated in the state which turned off the heater 51b.

  By the way, when the air circulation unit 51 and the second circulation pump 55 are operated at the same time, or when the air circulation unit 51 is activated and then the second circulation pump 55 is activated, the second circulation pump 55 has a low output. The high pressure detergent liquid cannot be supplied from the nozzle 26d1 due to the wind pressure of the high output blower unit 51. Therefore, in the present embodiment, the supply of the high-concentration detergent liquid from the nozzle 26d1 is not hindered by operating the blower unit 51 after the high-concentration detergent liquid is supplied from the nozzle 26d1 (supply port 26d2). . For example, the blower unit 51 is activated after a predetermined time has elapsed since the second circulation pump 55 is activated.

  In step S170, the control device 60 supplies water into the outer tub 2 and cleans the detergent flow path. That is, the control device 60 opens the main water supply electromagnetic valve 11b and supplies water until the water level necessary for the washing process is reached. At the same time, the control device 60 opens the mist water supply electromagnetic valve 11 e and supplies water from the supply port 26 e 2 of the nozzle 26 e 1 formed in the hot air duct 26 via the supply pipe 71. Further, the control device 60 drives the blower unit 51 so that the heated high-speed wind (warm air) passes through the hot air duct 26, the bellows tube 27, and the bellows tube joint 28 from the air outlet 2 s into the rotary drum 3. To supply. Thereby, tap water collides with a high-speed wind (warm air), and tap water becomes mist.

  The misted tap water is discharged from the air outlet 2s after washing the detergent solution adhering to the inner wall surface of the hot air duct 26, the inner wall surface of the bellows tube 27, and the inner wall surface of the bellows tube joint 28. As a result, even if a drying process is performed after supplying a high-concentration detergent solution in a mist form from the air outlet 2s and performing a washing process (washing, rinsing, dehydrating), the detergent adheres to the detergent channel (air channel). As a result, it is possible to prevent the occurrence of mold and the like, and to keep the air passage clean and hygienic.

  Further, in the washer / dryer S, the tap water supply port 26e2 is provided on the upstream side of the flow of air from the supply port 26e2 of the high-concentration detergent solution (mist), so that the entire wall surface of the air passage to which the detergent solution adheres. Can be washed.

  Thus, the cleaning power which removes the stain | pollution | contamination of a detergent can be improved by making tap water mist with warm air, and wash | cleaning a detergent flow path (wind path). In addition, it is not necessarily limited to warm air, You may make it mist-form by applying the wind which is not heated in the state which turned off the heater 51b.

  In addition, when washing | cleaning detergent liquid with tap water, it is not limited to the structure which mist-converts tap water, wash | cleans and supplies tap water, and does not mist tap water (blower unit 51 may be combined with a configuration in which the liquid is supplied in a liquid state. For example, after supplying the misted tap water first, liquid tap water may be supplied to wash away the wall surface of the detergent channel (air channel).

  In step S180, the control device 60 executes a washing process. In this washing process, pre-washing is performed, and the rotating drum 3 is rotated forward and backward (from 35 to 45 revolutions per minute) while the circulation pump motor 47 is energized to rotate the first circulation pump 53 forwards. Washing water (washing water) at the bottom of the tub 2 is sprinkled from above the laundry from the nozzle 2g. The laundry is lifted by the lifter 3b provided on the inner peripheral wall surface of the rotating drum 3, and the washing power is increased by repeating the falling motion. The rotation of the rotary drum 3 and the operation of the first circulation pump 53 are intermittently performed, and the water supply electromagnetic valve 11 is opened while referring to the detection signal of the water level sensor 34 during the stop period of the rotation drum 3 and the first circulation pump 53. Make sure that the water level does not exceed the set water level. By repeating this operation a plurality of times, the laundry can be uniformly infiltrated with washing water.

  When the first rotating drum 3 rotates forward and backward, washing water having a detergent concentration of about 10 times is sprinkled on the laundry and penetrates into the laundry. Since high-concentration washing water is spread while spreading in a thin film form from the nozzle 2g, it penetrates into the laundry evenly by the penetration action of the detergent. When there is a lot of laundry, the washing water from the nozzle 2g does not easily reach the laundry near the outer periphery of the rotary drum 3, but by rotating the rotary drum 3 while spraying high-concentration detergent liquid, Since washing water penetrates into the laundry from the outer peripheral side, the washing water penetrates the entire laundry. In addition, since the high-concentration washing water that has penetrated into the laundry contains a lot of micelles, the effect of dissolving oil stains and raising the stains from the laundry is very large, and high detergency can be obtained.

  Moreover, the reach | attainment distance of a shower can be changed by changing the flow rate by increasing / decreasing the rotational speed of the 1st circulation pump 53, and it can spread uniformly with a laundry. That is, if the rotation speed is decreased and the flow rate is reduced, the shower can be sprayed on the laundry on the front side of the rotating drum 3, and if the rotation speed is increased and the flow rate is increased, the shower is located on the back side of the rotating drum 3. Can be spread on laundry.

  Further, the control device 60 performs the main washing in the washing process. That is, the first circulating pump 53 is rotated forward and backward while rotating the rotating drum 3 forward and backward (from 35 to 45 rotations per minute), and the washing water accumulated at the bottom of the outer tub 2 is sprinkled on the laundry from the nozzle 2g. Finally, the operation of the first circulation pump 53 is stopped to stop the circulation of the washing water, and the operation of loosening the laundry is performed while rotating the rotating drum 3 forward and backward in a short cycle, and the main washing is finished.

  In step S190, the control device 60 executes a drainage / dehydration process. First, the drain valve 25 is opened, the washing water in the outer tub 2 is drained, and after the drain level is detected by the water level sensor 34, the rotating drum 3 is rotated in one direction and is contained in the laundry. Centrifugal dehydration of the wash water.

  In step S200, the control device 60 opens the main water supply electromagnetic valve 11b and supplies water to the bottom of the outer tub 2 from the water supply port 2a until the set water level is reached.

  In step S210, the control device 60 executes a rinsing process. Similarly to the main washing, the first circulation pump 53 is rotated forward and backward while rotating the rotating drum 3 forward and backward (from 35 to 45 rotations per minute), so that the rinse water accumulated at the bottom of the outer tub 2 is discharged from the nozzle 2g. Cycle to sprinkle on the laundry and rinse.

  Then, while the rotation of the rotary drum 3 and the operation of the first circulation pump 53 are stopped, the level of the rinse water accumulated at the bottom of the outer tub 2 is detected by the water level sensor 34 so that the water level does not exceed the set water level. I do. The rinsing water that comes out of the nozzle 2g becomes a thin film and is spread on the laundry. Therefore, the rinsing water hangs evenly on the laundry, so that the detergent components contained in the laundry can be diluted efficiently and the rinsing performance can be improved. Thereafter, in a state where the first circulation pump 53 is stopped and the circulation of the rinse water is stopped, the rotating drum 3 is rotated forward and backward in a short cycle to perform a loosening operation. Thereafter, the rinse water is drained, and the laundry is dehydrated by centrifugation.

  Further, the second rinsing rinse (final rinsing step) is performed. In this second rinsing, the finishing agent water supply electromagnetic valve 11c is opened and water is supplied to the softening agent charging chamber of the detergent tray 7, so that the softening agent (softening agent liquid) in the softening agent charging chamber is removed from the outer tub. Add control to the bottom of the two. In the final rinsing step, about half of the tap water than before (rather than the first rinse) is supplied to the softening agent charging chamber, and a softener liquid having a higher concentration than before is supplied to the bottom of the outer tub 2. Supply.

  In step S220, the control device 60 drives the second circulation pump 55 so that the high-concentration softener liquid stored in the bottom of the outer tub 2, the recess 2f, and the filter case 23 passes through the pipe 54a. Then, the air is sucked into the second circulation pump 55, discharged from the second circulation pump 55 through the pipe 54b, and supplied to the hot air duct 26 on the upstream side of the outlet 2s. Then, after the high-concentration softening agent liquid is discharged from the nozzle 26d1, the air blowing unit 51 (fan motor 24a) is energized to supply wind (unheated air) to the hot air duct 26. Thereby, the wind from the ventilation unit 51 contacts the high concentration softening agent liquid supplied from the supply port 26d2, and the high concentration softening agent liquid becomes mist.

  Thus, by using the second circulation pump 55 having a flow rate lower than that of the first circulation pump 53, it becomes possible to generate a high-concentration softening agent liquid by reducing the amount of water fed into the softening agent compared to the conventional case. The effect of the scent of the softening agent can be enhanced. Moreover, it becomes possible to disperse | distribute uniformly to clothing by making a softening agent liquid mist.

  After spraying the mist-formed softener liquid, the control device 60 stops the second circulation pump 55, supplies water to the original water level, operates the first circulation pump 53, and applies the softener liquid to the clothes from the nozzle 2g. Scatter.

  In step S230, the control device 60 executes a drainage / dehydration step (final dehydration). The final dehydration is performed by operating the drum motor 4 so as to rotate the rotating drum 3 in one direction at a high speed with the drain valve 25 opened, and centrifugally dewatering the laundry in the rotating drum 3. The operation time for the final dehydration is set to a time for obtaining a desired dehydration rate.

  In step S240, the control device 60 determines whether or not the washing / drying course is set. If the washing / drying course is set (Yes), the process proceeds to step S250, and the washing / drying course is set. If not (No), the process proceeds to step S260.

  In step S260, the control device 60 turns on the blower 51a immediately before the final dehydration in step S230 is completed. At this time, the fan 51a is driven using the regenerative power of the drum motor 4. Thereby, the softening agent liquid (washing water) remaining in the pipe 54b, the second circulation pump 55 and the pipe 54a is pushed back to the filter case 23 from the nozzle 26d1 by the pressure of the wind generated from the blower 51a. Further, the softening agent liquid (washing water) pushed back to the filter case 23 is discharged outside the machine through the drainage hose 19. As described above, when the drying process is not performed, the softening agent liquid (washing water) remaining in the pipes 54a and 54b and the second circulation pump 55 is discharged immediately before the final dehydration. Odor and mold generation can be prevented after the operation is stopped.

  When the washing / drying course is set, in step S250, the control device 60 executes a drying process. In this drying step, the blower unit 51 provided in the middle of the drying duct 29 is operated while rotating the rotating drum 3 forward and backward in the same manner as in the washing step with the drain valve 25 kept open. As a result, the air in the outer tub 2 is sucked into the drying duct 29, and air is supplied to the cooling water that flows from the water-cooling dehumidifying mechanism when passing through the drying duct 29 (the cooling water supply electromagnetic valve 11d is opened and supplied). Is touched to cool and dehumidify, and lint is collected through a lint filter 8 (see FIG. 1). Moreover, after heating air (wind) with the heater 51b, it blows in in the rotating drum 3 from the hot air blower outlet 2s. The drying process ends when the temperature change rate reaches a predetermined value while monitoring the temperature of the hot air with the temperature sensor. Also in this drying process, the softening agent liquid (washing water) remaining in the pipes 54 a and 54 b and the second circulation pump 55 is discharged to the filter case 23 by driving the blower 51 a of the blower unit 51.

  As described above, in the washer / dryer S of the present embodiment, the outer tub 2, the rotating drum 3, the drum motor 4, the first circulation passage 52, the first circulation pump 53, and the second circulation flow. A passage 54, a second circulation pump 55, and a foreign matter removal filter 56 that removes foreign matters contained in the washing water and the detergent liquid are provided. According to this, even if the first circulation pump 53 and the second circulation pump 55 are driven to circulate the detergent liquid, the foreign matter is removed by the foreign matter removing filter 56, so that the foreign matter does not reattach to the clothing. .

  In the present embodiment, the foreign matter removal filter for the first circulation pump 53 and the foreign matter removal filter for the second circulation pump 55 are configured by the common foreign matter removal filter 56, thereby reducing the number of parts and washing. The configuration of the dryer S can be simplified.

  In the present embodiment, the foreign matter removal filter 56 is formed with a plurality of collection holes 56f for collecting foreign matter, and the opening area A1 of each collection hole 56f is adjusted by the second circulation pump 55 so that a high-concentration detergent solution is present. It is formed smaller than the flow path cross-sectional areas A2 and A3 of the second circulation flow path 54 that flows. According to this, even if foreign matter passes through the foreign matter removal filter 56, it is possible to prevent the second circulation channel 54 from being clogged.

  In the present embodiment, the second circulation pump 55 is disposed such that the discharge port 55j is positioned above the suction port 55i for the high-concentration detergent liquid in the vertical direction. According to this, air remaining in the second circulation channel 54 and the second circulation pump 55 can be easily removed, and the flow rate of the detergent liquid can be stabilized when the second circulation pump 55 is initially driven. Can also be reduced.

  Moreover, in this embodiment, it is equipped with the air blower 51a and the blower outlet 2s which blows off the wind from the blower 51a in the rotating drum 3, and the 2nd circulation flow path 54 is a flow path between the blower 51a and the blower outlet 2s. It is connected to the. According to this, the residual water in the 2nd circulation flow path 54 and the 2nd circulation pump 55 can be drained with the force of the air of the air blower 51a.

  Moreover, in this embodiment, the softener liquid accumulated on the bottom of the outer tub 2 is sprayed on the laundry through the second circulation channel 54 by the second circulation pump 55 in the final rinsing step. According to this, it can utilize for not only a detergent liquid but a softening agent liquid, and when it uses for a softening agent liquid, the effect of the fragrance of a softening agent can be heightened.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, the case where the common foreign matter removal filter 56 is applied to the first circulation pump 53 and the second circulation pump 55 has been described as an example. The foreign matter removal filter (first foreign matter removal filter) and the part removal filter (second foreign matter removal filter) for the second circulation pump 55 may be configured by separate (independent) foreign matter removal filters.

  In the above-described embodiment, the rotation center axis of the rotary drum 3 is described as an example of a drum-type washing and drying machine that is inclined so that the horizontal axis or the opening 3a side is high. You may apply to the machine.

DESCRIPTION OF SYMBOLS 1 Housing 2 Outer tank 2g Circulation piping 3 Rotating drum (inner tank)
4 Drum motor (drive device)
11 Water Supply Solenoid Valve 11e Mist Water Supply Solenoid Valve 26d2 Supply Port 26e2 Supply Port 51 Blower Unit 51a Blower 51b Heater 52 First Circulation Pipe (First Circulation Channel)
53 1st circulation pump 54 2nd circulation piping (2nd circulation flow path)
55 Second circulation pump 55i Suction port 55j Discharge port 56 Foreign matter removal filter 56f Collection hole 60 Controller A1 Opening area A2, A3 Channel cross-sectional area S Washer / dryer

Claims (2)

An outer tank supported in the housing,
An inner tub enclosed in the outer tub and containing laundry;
A driving device for rotationally driving the inner tank;
A blower,
A blowout port for blowing the wind from the blower into the inner tank;
A first circulation channel connecting the bottom of the outer tank and the upper part of the outer tank;
A first circulation pump for spraying the washing water collected at the bottom of the outer tub to the laundry through the first circulation channel;
A second circulation flow path different from the first circulation flow path connecting the bottom of the outer tank and the top of the outer tank;
A second circulation pump having a flow rate lower than that of the first circulation pump for spraying the detergent liquid collected at the bottom of the outer tub onto the laundry via the second circulation channel;
The second circulation flow path communicates with a flow path between the blower and the outlet, and the blower is turned on to blow air to the second circulation pump via the second circulation flow path. A washing dryer characterized by.   2. The washing and drying machine according to claim 1, wherein the blower is turned on immediately before the final dehydration step is finished, and the second circulation pump is blown through the second circulation passage.

Images