JP5480769B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a laundry dryer for washing and drying laundry.

  A conventional washing and drying machine is disclosed in Patent Document 1. In this washing / drying machine, after the first drying operation in which the blower and the heater are driven while rotating the washing / dehydrating tank at a high speed, the rotation speed of the washing / dehydrating tank is set to be lower than that in the first drying operation. A second drying operation for driving the dehumidifying means is performed.

  In the second drying operation, air containing moisture evaporated from the laundry is passed through the cooling water supplied by the dehumidifying means while the hot air is circulated inside the washing / drying machine to dehumidify. Thereby, the dry warm air can be circulated and the laundry can be dried.

JP 2010-11924 A JP 2010-42118 A

  However, according to the conventional washing and drying machine, a dehumidifying means for dehumidifying warm air containing water evaporated from the laundry is provided. For this reason, there has been a problem in that the structure becomes complicated and the manufacturing cost of the washing / drying machine increases, and the running cost increases because cooling water for dehumidification is required.

  An object of this invention is to provide the washing-drying machine which can reduce manufacturing cost and running cost.

  In order to achieve the above object, the present invention provides an outer box that opens and closes a doorway of laundry that opens on the upper surface by a lid, a bottomed cylindrical water tank that is housed in the outer box and opens the upper surface, An extension part extending downward from the periphery of the entrance / exit, an elastic body connecting between the extension part and the upper surface of the water tank, a dehydration tank that is rotatably arranged in the water tank and has a pulsator at the bottom A water supply section for supplying water to the dewatering tank, a circulation duct connecting the suction port and the air outlet facing the dehydration tank, a blower and a heater arranged in the circulation duct, and an exhaust gas facing the dehydration tank An exhaust duct that is led out from the opening and opened to the atmosphere; an outside air introduction duct that is connected upstream of the blower of the circulation duct to introduce outside air; and an opening and closing member that opens and closes the outside air introduction duct, Supply water into the tub and wash the laundry In a washing and drying machine provided with a washing process and a drying process in which warm air is sent from the blower outlet to dry the laundry by driving the blower and the heater, the drying process closes the opening and closing member and the dehydration An internal air circulation period in which the air in the tank circulates through the circulation duct, and an external air introduction period in which the open / close member is opened and the heated external air is sent out and exhausted through the exhaust duct are provided. The installation portion is formed of a vertical portion that extends vertically and a horizontal portion that is bent from the lower end of the vertical portion, and a first opening that opens to the vertical portion and a second opening that opens to the horizontal portion. Part.

  According to this configuration, the blower and the heater are stopped in the washing process, and the laundry is put into the dewatering tank arranged in the water tank from the entrance and supplied from the water supply unit. Then, the washing operation and the rinsing operation are performed by the rotation of the pulsator, and the dehydrating operation is performed by rotating the dewatering tank. Thereby, the laundry is washed. In the drying process, the blower and the heater are driven, and the opening / closing member is closed during the inside air circulation period. And the air in a water tank flows in into a circulation duct from the 1st opening part opened to the vertical part of an extending part, and the 2nd opening part opened to a horizontal part, and is sent from a blower outlet and circulates. Thereby, the temperature in the water tank is quickly raised. In the outside air introduction period, the opening / closing member is opened, and the outside air whose temperature has been raised flows into the water tank through the outside air introduction duct and is exhausted through the exhaust duct. Thereby, the air containing water vapor is exhausted and the laundry is dried. Since the periphery of the doorway and the upper surface of the water tank are covered with the extending portion and the elastic body, there is no need to provide an inner lid on the upper surface of the water tank, and the number of parts can be reduced.

  In the above-described configuration, the washing and drying machine of the present invention includes an intake filter disposed in the circulation duct, and the intake filter is pulled out from the circulation duct with a finger inserted into the first opening. Features.

  The washing / drying machine according to the present invention is characterized in that, in the above configuration, a packing for sealing the periphery of the suction port is provided between the extended portion and the circulation duct.

  According to the present invention, the opening and closing member can be closed during the inside air circulation period of the drying process and the air in the water tank can be circulated through the circulation duct to quickly raise the temperature, and the outside air introduction duct can be opened by opening the opening and closing member during the outside air introduction period. Since the heated outside air is supplied into the water tank and exhausted through the exhaust duct, the water evaporated from the laundry can be discharged and the laundry can be dried. Therefore, it is not necessary to provide a dehumidifying means for dehumidifying air containing moisture as in the conventional example, and the manufacturing cost and running cost of the washing / drying machine can be reduced.

  Further, since the space between the periphery of the doorway and the upper surface of the water tank is covered with the extending portion and the elastic body, it is not necessary to provide an inner lid on the upper surface of the water tank, and the number of parts can be reduced. Further, in the inside air circulation period, the air in the water tank flows into the circulation duct through the first opening that opens in the vertical portion of the extending portion and the second opening that opens in the horizontal portion. Therefore, since the air which distribute | circulates a circulation duct increases, the temperature in the water tank can be heated more rapidly.

It is a perspective view which shows the washing-drying machine which concerns on embodiment of this invention. It is side surface sectional drawing which shows schematic structure of the washing-drying machine which concerns on embodiment of this invention. It is a perspective view which shows the state which opened the cover part of the washing-drying machine which concerns on embodiment of this invention. It is a block diagram which shows the structure of the washing-drying machine which concerns on embodiment of this invention. It is a schematic sectional side view which shows the drying unit of the inside air circulation period of the washing / drying machine which concerns on embodiment of this invention. It is a schematic sectional side view which shows the drying unit of the outside air introduction period of the washing / drying machine which concerns on embodiment of this invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a perspective view showing a washer / dryer according to an embodiment of the present invention from a diagonally upper front point of view, and FIG. 2 is a schematic side sectional view showing the washer / dryer of FIG. In the washing and drying machine shown in FIG. 2, the left side is the front surface and the right side is the back surface.

  The washing / drying machine 1 is a fully automatic type and includes a rectangular parallelepiped outer box 10. The outer box 10 is formed in a substantially rectangular parallelepiped shape, and its upper and lower sides are opened. The upper open portion of the outer box 10 is covered with an upper surface plate 11. An operation unit 71 for operating the washing / drying machine is provided on the front side of the top plate 11, and the back panel 14 is mounted on the back side of the top plate 11.

  An entrance / exit 11a for feeding laundry into the washing / drying machine 1 is opened at the center of the top plate 11. The entrance / exit 11a is opened and closed by a lid 15 pivotally supported by a hinge 15a provided at the front end of the back panel 14. A packing (not shown) is provided on the periphery of the lid portion 15, and the space between the entrance / exit 11 a and the lid portion 15 is sealed. By rotating the lid portion 15 up and down to open and close the entrance / exit 11a, the laundry can be put into or taken out of the dehydration tank 30 described later.

  FIG. 3 is a perspective view showing a state in which the lid portion 15 is opened. In FIG. 1 to FIG. 3, a dewatering tank 30 that also serves as a washing tub and a water tank 20 that houses the dewatering tub 30 are housed inside the outer box 10. The dewatering tank 30 stores water in which detergent is dissolved or water for rinsing (hereinafter collectively referred to as “washing water”). Both the water tank 20 and the dewatering tank 30 have the shape of a bottomed cylindrical cup having an open top surface, and are arranged concentrically with the water tank 20 on the outside and the dewatering tank 30 on the inside, with the axis being vertical. The

  The water tank 20 is suspended by a suspension member 21. Suspension members 21 are provided at a total of four locations connecting the lower outer surface of the water tank 20 and the inner corners of the outer box 10, and support the water tank 20 so that it can swing within the horizontal portion.

  The dewatering tank 30 has a peripheral wall extending upwardly in a tapered shape, and this peripheral wall has no opening for allowing liquid to pass except for a plurality of dewatering holes 31 arranged in an annular shape at the uppermost portion. That is, the dewatering tank 30 is formed in a so-called “no hole” type. An annular balancer 32 is attached to the edge of the upper opening of the dewatering tub 30 to suppress vibration when the dewatering tub 30 is rotated at a high speed for dewatering the laundry. A pulsator 33 for causing the washing water to flow in the tank is disposed on the inner bottom surface of the dewatering tank 30.

  A drive unit 40 is attached to the lower surface of the water tank 20. The drive unit 40 includes a motor 41 and a clutch / brake mechanism 43. The clutch / brake mechanism 43 is connected to the motor 41 by a belt 42, and the dewatering shaft 44 and the pulsator shaft 45 protrude upward. The clutch / brake mechanism 43 operates by electromagnetic force, and alternatively connects one of the dewatering shaft 44 and the pulsator shaft 45 to the motor 41. The clutch / brake mechanism 43 brakes the rotation of the dehydrating shaft 44 by electromagnetic force and releases the brake.

  The dewatering shaft 44 and the pulsator shaft 45 have a double shaft structure. The dewatering shaft 44 is disposed outside and the pulsator shaft 45 is disposed inside. The dewatering shaft 44 penetrates the water tank 20 and is connected to the dewatering tank 30 to support the dewatering tank 30. The pulsator shaft 45 passes through the water tank 20 and the dewatering tank 30 and is connected to the pulsator 33 to support the pulsator 33. Seal members for preventing water leakage are disposed between the dewatering shaft 44 and the water tank 20 and between the dewatering shaft 44 and the pulsator shaft 45, respectively.

  The outer box 10 is provided with an extending portion 16 that extends downward from the periphery of the doorway 11a. The extending portion 16 has a substantially vertical vertical portion 16a formed in an annular shape and a horizontal portion 16b extending substantially horizontally from the lower end of the vertical portion 16a. An annular bellows-like elastic body 17 is attached to the lower surface of the horizontal portion 16b. The extending portion 16 and the upper surface of the water tank 20 are connected by the elastic body 17, and the vibration of the water tank 20 due to the rotation of the dewatering tank 30 or the like is absorbed.

  Further, the extending portion 16 and the elastic body 17 constitute a shielding portion that shields between the periphery of the entrance / exit 11 a and the upper surface of the water tank 20. A sealed space is formed between the water tank 20 and the entrance / exit 11a by the shielding portion. Thereby, the inner cover which opens and closes the upper surface of the water tank 20 is not required, and the lid 15 can be closed to perform washing and drying.

  A drying unit 91 is installed on the extended portion 16 at the rear of the outer box 10. The drying unit 91 includes a blower 50 and a heater 54, and a water level sensor (not shown), a drive motor (not shown) for an opening / closing member 61 described later, and the like are installed on the horizontal portion 16b.

  In the drying unit 91, the first opening 51b and the exhaust port 53a are opened in the vertical part 16a of the extending part 16, and the second opening 51c and the outlet 51d are opened in the horizontal part 16b. The first opening 51 b and the second opening 51 c form a suction port 51 a of the circulation duct 51. The air outlet 51d is arranged so as to blow out hot air along the inner peripheral wall of the dewatering tank 30 downward.

  The exhaust port 53a is led out to the exhaust duct 53 that is open to the atmosphere, and opens above the suction port 51a and is arranged in the vicinity of the entrance / exit 11a. An exhaust filter 56 is provided in the exhaust duct 53. The exhaust filter 56 can prevent the fibers contained in the exhaust from being scattered in the room during the drying process.

  The suction port 51 a and the air outlet 51 d are connected by a circulation duct 51, and the blower 50 and the heater 54 are arranged in the circulation duct 51. Thus, the circulation duct 51 forms a suction duct 51e between the suction port 51a and the blower 50, and forms a blowout duct 51f between the blower 50 and the blower outlet 51d.

  The blowout duct 51f extends upward from the blowout opening 51d, and then bends in a substantially horizontal direction, and the blower 50 and the heater 54 are disposed. The suction duct 51e extends downward from the blower 50, bends forward, and then branches to communicate with the first opening 51b and the second opening 51c from the suction duct 51e. Thereby, the air blower 50 and the heater 54 are arrange | positioned in the position higher than the suction inlet 51a.

  The heater 54 is composed of a PTC (Positive Temperature Coefficient) heater, and warm air is sent out from the outlet 51 d by driving the blower 50 and the heater 54. If the hot air becomes too hot, the synthetic resin parts inside the washer / dryer 1 may be melted. For this reason, it is good to set so that the blowing temperature from the circulation duct 51 may not exceed 90 ° C.

  An intake filter 55 is provided in the suction duct 51e. The intake filter 55 is supported by a frame 55a of a resin molded product, and is disposed downstream of the second opening 51c. The front surface of the frame 55a opens to form the first opening 51b, and the lower surface of the frame 55a opens to communicate with the second opening 51c. Thereby, the intake filter 55 can be pulled out and cleaned by placing a finger on the first opening 51b.

  The intake filter 55 can prevent foreign matter (mainly fibers) from being sucked into the blower 50 or attached to the heater 54 and burnt. Further, since the first opening 51b and the second opening 51c that form the suction port 51a of the circulation duct 51 are provided on the front surface and the lower surface of the extending portion 16, respectively, the airflow flowing into the circulation duct 51 is increased. Can do.

  Between the vertical part 16a and the circulation duct 51, a packing (not shown) for sealing the periphery of the first opening 51b is provided. Between the horizontal part 16b and the circulation duct 51, a packing (not shown) for sealing the periphery of the second opening 51c is provided. Thereby, it can prevent that a foreign material penetrate | invades into the drying unit 91 through the clearance gap between the circulation duct 51 and the extension part 16 which are formed around the 1st opening part 51b and the 2nd opening part 51c.

  An outside air introduction duct 57 is connected to the circulation duct 51 upstream of the blower 50. The outside air introduction duct 57 communicates with the upper portion and the lower portion of the horizontal portion 16 b through the opening portion 13 provided in the horizontal portion 16 b of the extending portion 16. An outside air introduction duct 57 below the horizontal portion 16 b is formed between the water tank 20 and the outer box 10. The drying unit 91 is provided with an opening / closing member 61 that opens and closes the opening 13.

  A PCI generator 80 for generating plasma cluster ions (hereinafter referred to as “PCI”) composed of positive ions and negative ions is provided above the circulation duct 51. The PCI generated by the PCI generator 80 is discharged into the circulation duct 51. Further, a PCI external discharge duct 82 for discharging PCI to the outside of the circulation duct 51 is formed on the downstream side of the PCI generator 80.

  A PCI discharge valve 81 that discharges PCI to the outside of the machine is provided at a branch portion between the circulation duct 51 and the PCI outside discharge duct 82. The PCI discharge valve 81 opens the circulation duct 51 and closes the PCI outside discharge duct 82 (solid line state in FIG. 1), and also opens the PCI outside discharge duct 82 and partially opens the circulation duct 51 (in FIG. 1). Take one of the postures in the broken line state).

  Further, the horizontal portion 16b of the extending portion 16 is provided with a water supply port (not shown). The water supply port is connected to city water via a water supply valve 77 (see FIG. 4). Therefore, the water supply port and the water supply valve 77 constitute a water supply unit that supplies water to the dehydration tank 30.

  A drain hose 60 for draining the water in the water tank 20 and the dehydration tank 30 to the outside of the outer box 10 is attached to the bottom of the water tank 20. The dewatering tank 30 is provided with four drain holes 62 on the same circumference, and each drain hole 62 and the drain hose 60 are connected by a drain duct 61. A drain valve 63 is provided in the drain duct 61. When the drain valve 63 is opened, the water in the dehydration tank 30 is drained through the drain duct 61 and the drain hose 60. Further, the water that flows out from the upper part of the dehydration tank 30 during dehydration passes through between the peripheral wall of the water tank 20 and the peripheral wall of the dehydration tank 30 and is drained from the drain hose 60.

  FIG. 4 is a block diagram showing the configuration of the washing / drying machine 1. The washing / drying machine 1 is provided with a control unit 70 that controls each unit. The control unit 70 has a control board (not shown), and is arranged on the upper back of the outer box 10. The control unit 70 includes a motor 41, a clutch / brake mechanism 43, a blower 50, a heater 54, an opening / closing member 61, a water supply valve 77, a PCI generator 80, a PCI release valve 81, an operation unit 71, a display unit 72, and a lid opening / closing sensor 73. A water level sensor 74, a temperature sensor 75, and a humidity sensor 76 are connected.

  The display unit 72 is provided in the operation unit 71 and displays an operation screen and an operation state of the washing / drying machine 1. The lid opening / closing sensor 73 detects the opening / closing state of the lid portion 15. The water level sensor 74 detects the water level in the dehydration tank 30. The temperature sensor 75 detects the temperature inside the dehydration tank 30. The humidity sensor 76 detects the humidity inside the dehydration tank 30.

  In the washing / drying machine 1 having the above-described configuration, the laundry is put into the dewatering tank 30 from the entrance / exit 11a, and the lid 15 is closed. When a washing condition is selected by the operation unit 71 and the start of washing is instructed, the lid opening / closing sensor 73 detects that the lid unit 15 is closed, and the washing process and the drying process are executed.

  In the washing process, the drain valve 63 is closed and the water supply valve 77 is opened to supply water to the dehydration tank 30 from the water supply port. When a predetermined amount of water accumulates in the dewatering tank 30, the water supply valve 77 is closed by detection of the water level sensor 74. Next, the pulsator shaft 45 is connected to the motor 41 by the clutch / brake mechanism 43 to drive the motor 41. Thereby, the pulsator 33 rotates and the washing operation is performed by stirring the water in the dewatering tank 30.

  When a predetermined time has elapsed since the start of the washing operation, the drain valve 63 is opened to drain the water in the dewatering tank 30, and the dewatering shaft 44 is connected to the motor 41 by the clutch / brake mechanism 43. Thereby, the dehydrating tank 30 is rotated at a high speed by the drive of the motor 41 and the dehydrating operation is performed. Water splashed from the laundry due to the high-speed rotation of the dewatering tank 30 flows out from the drainage duct 61 and the dewatering hole 31.

  When a predetermined time elapses after starting the dehydrating operation, the motor 41 is stopped, the drain valve 63 is closed, and the water supply valve 77 is opened. When a predetermined amount of water accumulates in the dewatering tank 30, the water supply valve 77 is closed by detection of the water level sensor 74. Next, the pulsator shaft 45 is connected to the motor 41 by the clutch / brake mechanism 43 to drive the motor 41. As a result, the pulsator 33 rotates, and the rinsing operation is performed by stirring the water in the dewatering tank 30.

  When a predetermined time has elapsed after starting the rinsing operation, the above dehydration operation is performed again. When the dehydrating operation is performed for a predetermined time, the washing process ends.

  In the washing process, the outside air introduction duct 57 is opened by the opening / closing member 61 as shown in FIG. For this reason, when the water level rises above the water tank 20 due to a failure of the water supply section and water flows into the circulation duct 51, the open / close member 61 is opened and the water is discharged through the outside air introduction duct 57. This prevents the blower 50, the heater 54, and other electrical components disposed in the drying unit 91 from being flooded.

  Next, a drying process is performed. The drying process is provided with an inside air circulation period and an outside air introduction period. As shown in FIG. 5, the open / close member 61 is closed and the blower 50 and the heater 54 are driven during the inside air circulation period. Thereby, the air in the water tank 20 circulates through the circulation duct 51. During the outside air introduction period, as shown in FIG. 6, the opening / closing member 61 is opened to drive the blower 50 and the heater 54. Thereby, the outside air flowing in from the outside air introduction duct 57 is heated and sent into the water tank 20, and is exhausted from the exhaust duct 53.

  When the drying process is started, the air in the water tank 20 flows into the circulation duct 51 through the suction port 51a during the inside air circulation period by driving the blower 50. The air flowing into the circulation duct 51 is heated by the heater 54 and sent out into the water tank 20 from the outlet 51d. Thereby, the air in the water tank 20 is heated.

  Since warm air does not go out of the washing / drying machine 1 during the inside air circulation period, heat is confined in the water tank 20. Moreover, since the dehydration tank 30 is a holeless type, the amount of air leaking out from the dehydration tank 30 is small, and air hardly convects in the space between the dehydration tank 30 and the water tank 20. For this reason, the space in which the air circulates and circulates is almost limited to the inside of the dehydration tank 30, the convection and the circulation proceed efficiently, and the temperature in the dehydration tank 30 rises quickly.

  At this time, since the evaporation of water from the laundry becomes active at 50 ° C. or higher, the inside of the dewatering tank 30 is raised to 50 ° C. or higher during the inside air circulation period. At this time, the dewatering tank 30 is rotated at a lower rotational speed than the rotational speed at the time of dehydration so that the warm air is uniformly applied to the laundry inside the dehydrating tank 30. Since the pressure in the water tank 20 increases due to the temperature rise, a part of the air is exhausted to the outside through the exhaust duct 53.

  When the temperature inside the dewatering tank 30 rises, the water evaporates from the laundry, and the air in the inside air circulation in the water tank 20 contains a lot of water. When the temperature sensor 75 detects that the internal temperature of the dehydration tank 30 has risen to a predetermined value, the outside air introduction period is switched. When the humidity sensor 76 detects that the internal humidity of the dehydration tank 30 has risen to a predetermined value, it may be switched to the outside air introduction period.

  The opening / closing member 61 is opened during the outside air introduction period. As a result, the air is introduced into the circulation duct 51 from both the suction port 51 a and the outside air introduction duct 57 to the blower 50. Then, the air heated by the heater 54 flows through the blowout duct 51f and is sent downward from the blowout port 51d. Since the outside air is heated from the outside air introduction duct 57 and supplied into the water tank 20, the air containing a large amount of water in the water tank 20 is exhausted to the outside through the exhaust duct 53. Thereby, moisture is efficiently discharged from the water tank 20.

  At this time, warm air is sent out along the peripheral surface of the dehydration tank 30 downward from the outlet 51d, flows through the dehydration tank 30, and flows out from the front to the top of the dehydration tank 30. The air that has flowed out above the dehydration tank 30 flows rearward along the lid portion 15, and flows out from the exhaust port 53 a disposed near the lid portion 15. Thereby, an airflow can distribute | circulate smoothly through the sealed space enclosed by the water tank 20 and the shielding part (extension part 16, elastic body 17), and it can dry laundry efficiently.

  On the other hand, not all the air in the dehydration tank 30 is exhausted from the exhaust duct 53, but a part of the air circulates in the circulation duct 51 through the suction port 51a. Thereby, the high-temperature state inside the dehydration tank 30 can be maintained and the water evaporation rate from the laundry can be kept high.

  When the outside air introduction period is continued and the humidity detected by the humidity sensor 76 is lower than a predetermined value, the blower 50, the heater 54, and the motor 41 are stopped. Then, the completion of the washing process and the drying process is notified by display on the display unit 72, voice, or the like.

  When the laundry is set to be sterilized by PCI in the drying process, the PCI external discharge valve 81 closes the PCI external discharge duct 82 and the PCI generator 80 is driven. Thereby, PCI is discharged | emitted in the circulation duct 51, and the air containing PCI in the dehydration tank 30 is sent out from the blower outlet 51d.

  The PCI adheres to the laundry and can perform sterilization, fungicide, deodorization, etc. of the laundry. In addition, the dehydration tank 30, the circulation duct 51, the intake filter 55, the blower 50 can be sterilized, mildew-proof, deodorized, and the like, and these can be maintained in a good sanitary state.

  If the setting is such that indoor sterilization or the like is performed by PCI in the drying process, the PCI generator 80 is driven by opening the PCI external discharge duct 82 by the PCI discharge valve 81. As a result, most of the PCI is discharged from the PCI external discharge duct 82 to the outside of the apparatus. The PCI discharged from the PCI outside discharge duct 82 diffuses into the room where the washing / drying machine 1 is placed, and can perform sterilization, mold prevention, deodorization and the like in the room.

  When the power of the washing / drying machine 1 is stopped, the opening / closing member 61 is closed. Thereby, intrusion of dust into the circulation duct 51 can be prevented.

  Note that the suction duct 51e may be closed during the outside air introduction period. Alternatively, the outside air introduction period may be performed for a predetermined period with the suction duct 51e opened and then for a predetermined period with the suction duct 51e closed.

  Further, the dehydration tank 30 may be temporarily rotated at a high speed during the outside air introduction period. Thereby, the wind speed of the convection inside the dehydration tank 30 is increased, and the evaporation of moisture from the laundry and the discharge of the evaporated moisture can be promoted.

  According to the present embodiment, the opening / closing member 61 is closed during the inside air circulation period of the drying process, and the air in the water tank 20 can be circulated through the circulation duct 51 to quickly raise the temperature, and the opening / closing member 61 is opened during the outside air introduction period. Since the heated outside air is supplied into the water tank 20 through the outside air introduction duct 57 and exhausted through the exhaust duct 53, the water evaporated from the laundry can be discharged and the laundry can be dried. Therefore, there is no need to provide a dehumidifying means for dehumidifying air containing moisture as in the conventional example, and the manufacturing cost and running cost of the washing / drying machine 1 can be reduced.

  Moreover, since the extension part 16 and the elastic body 17 cover between the circumference | surroundings of the entrance / exit 11a and the upper surface of the water tank 20, it is not necessary to provide an inner cover in the upper surface of the water tank 20, and can reduce a number of parts. Further, during the inside air circulation period, the warm air sent from the outlet 51d is sucked from the first opening 51b that opens to the vertical portion 16a of the extending portion 16 and the second opening 51c that opens to the horizontal portion 16b. Since the airflow flowing into the circulation duct 51 increases, the temperature of the air in the water tank 20 can be raised more quickly.

  In addition, since the intake filter 55 disposed in the circulation duct 51 is pulled out of the circulation duct 51 with a finger inserted into the first opening 51b, foreign matter attached to the intake filter 55 can be easily cleaned.

  In addition, by providing a packing that seals the periphery of the suction port 51a between the extension portion 16 and the circulation duct 51, drying is performed from the gap between the circulation duct 51 and the extension portion 16 formed around the suction port 51a. Foreign matter can be prevented from entering the unit 91. Therefore, it is possible to protect the electrical components arranged in the drying unit 91 from dust.

  The present invention can be widely used in washing and drying machines.

DESCRIPTION OF SYMBOLS 1 Washing and drying machine 10 Outer box 11 Top plate 11a Entrance / exit 13 Opening part 14 Back panel 16 Extension part 16a Vertical part 16b Horizontal part 20 Water tank 30 Dehydration tank 32 Balancer 33 Pulsator 40 Drive unit 41 Motor 42 Belt 43 Clutch / brake mechanism 44 Dehydration shaft 50 Blower 51 Circulating duct 51a Suction port 51b First opening 51c Second opening 51d Blowing outlet 51e Suction duct 51f Blowing duct 53 Exhaust duct 53a Exhaust port 54 Heater 57 Outside air introduction duct 61 Opening / closing member 70 Control unit 71 Operation unit 75 Temperature sensor 76 Humidity sensor 80 PCI generator 81 PCI discharge valve 82 PCI external discharge duct

Claims (3)

  An outer box that opens and closes a laundry entrance opening on the upper surface with a lid; a bottomed tubular water tank that is housed in the outer box and opens on the upper surface; and an extending part that extends downward from the periphery of the entrance An elastic body that connects between the extended portion and the upper surface of the water tank, a dehydration tank that is rotatably arranged in the water tank and has a pulsator at the bottom, and a water supply section that supplies water to the dewater tank A circulation duct connecting the suction port facing the dehydration tank and the outlet, a blower and a heater arranged in the circulation duct, and an exhaust gas that is led out from the exhaust port facing the dehydration tank and opened to the atmosphere A duct, an outside air introduction duct connected to the circulation duct upstream of the blower to introduce outside air, and an opening / closing member that opens and closes the outside air introduction duct. A washing step, the blower and the A washing / drying machine provided with a drying process for sending warm air from the blower outlet to dry the laundry, and the drying process closes the opening and closing member so that the air in the dewatering tub is transferred to the circulation duct A vertical portion in which the extending portion extends vertically, and an outside air introduction period in which the open / close member is opened and the outside air heated by opening the opening / closing member is sent out and exhausted through the exhaust duct is provided. And a horizontal portion bent from the lower end of the vertical portion, and the suction port has a first opening opening in the vertical portion and a second opening opening in the horizontal portion. Washing and drying machine.   The washing / drying machine according to claim 1, wherein an intake filter disposed in the circulation duct is provided, and the intake filter is pulled out of the circulation duct with a finger inserted into the first opening.   The washing / drying machine according to claim 1 or 2, wherein a packing for sealing the periphery of the suction port is provided between the extending portion and the circulation duct.

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