JP5385090B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a laundry dryer that accommodates laundry in a drum that is rotatably installed in an outer tub, and performs washing, rinsing, dehydration, and drying operations.

  2. Description of the Related Art Conventionally, there has been provided a laundry dryer that accommodates laundry in a drum and performs from washing to drying. This washing / drying machine is provided with a substantially cylindrical outer tub capable of storing water in the main body, and the outer tub is disposed in the main body with the axis of the cylinder as an oblique direction. A cylindrical drum is similarly provided inside the outer tub. The interior of this drum is a storage chamber for storing laundry, and this is also arranged with a cylindrical shaft as an oblique direction, and this shaft is connected to the shaft of a drive motor mounted on the outer tub, Centering on the axis, the shaft is held rotatably in the outer tub.

  The drum has a plurality of through holes through which air and water can flow. This through hole serves as a hole for water to flow out during the washing operation. Further, in the drying operation, it becomes a hole for circulation of drying air (circulation air). Specifically, the air in the drum flows out to the outer tank through the through hole, and this air is discharged to the outside of the main body through an air passage configured to allow communication between the outer tank and the outside of the main body. It is configured as follows.

  The air passage is provided with an exhaust valve that opens and closes the air passage in order to prevent inconvenience that water stored in the outer tub and the drum enters the air passage during the washing operation. During the washing operation, the air passage is closed by the exhaust valve to prevent water from entering the air passage. Specifically, the operation of the exhaust valve is controlled by a driving device, and when the air passage is opened, the motor of the driving device is driven and the exhaust valve is operated by the motor. When the control means of the driving device detects that the exhaust valve has reached the air passage opening position, the motor is stopped and the air passage is opened. On the other hand, when closing the air passage, when the control means detects that the exhaust valve has reached the air passage closed position, the motor is stopped and the air passage is closed (for example, Patent Document 1). reference).

JP 2009-78068 A

  However, when the control means detects that the exhaust valve has reached the predetermined open position and the closed position as described above and stops the operation of the exhaust valve by stopping the motor, the control means may stop immediately due to inertia. Therefore, it is necessary to control the motor by the control means so that the exhaust valve stops at a position where the exhaust passage is completely closed or opened. However, since the stop position varies depending on the number of uses and the ambient temperature, the motor should be controlled so that the exhaust valve stops at a position where the air passage is completely closed or a position where the air passage is completely opened. It was difficult.

  Accordingly, the present invention has been made to solve the conventional technical problems, and an object of the present invention is to provide a washing / drying machine that can reliably open and close an air passage using an exhaust valve.

  That is, the washing and drying machine according to the first aspect of the invention has an outer tub capable of storing water, and is rotatably arranged in the outer tub, has a through hole in the peripheral wall, and accommodates the laundry inside for washing. , A drum for performing each operation of rinsing, dehydration and drying, a drying air supply device for supplying drying air into the drum during the drying operation, and communicating with the inside of the outer tub. An air passage for taking out the air flowing out from the drum into the outer tub, an exhaust valve that opens the air passage during the drying operation and closes the air passage during other than the drying operation, and drives the exhaust valve to drive the air And a drive device that opens and closes the path. The drive device connects a motor that rotates in one direction, a cam attached to the output shaft of the motor, an output shaft and an exhaust valve, and outputs A link mechanism that operates the exhaust valve by rotating the shaft, and a cam An open detection switch and a close detection switch for detecting opening and closing of the air passage by the air valve, and control means for controlling the operation of the motor based on the output of each switch. When opening and closing the road, the motor is operated only for the opening time and the closing time determined in advance from a predetermined starting point, and based on the output of each detection switch after the operation of the motor, when it is determined that the opening or closing has failed, The motor is operated again after correcting the opening time or the closing time.

  The washing / drying machine according to claim 2 is characterized in that, in the above invention, the control means detects the opening or closing of the air passage within a predetermined time after the opening detection switch or the closing detection switch detects the opening or closing of the air passage. When it becomes impossible, it is judged that it is an opening or closing failure.

  According to a third aspect of the present invention, in the washing and drying machine according to the second aspect, the control means in the second aspect of the invention detects the closing after the opening detection switch or the closing detection switch cannot detect the opening or closing of the air passage and the motor is operated again. If the open detection switch or close detection switch detects the opening or closing of the air path again before the switch or open detection switch detects the close or open of the air path, it is determined that the open time or the close time is insufficient. And extending the opening or closing time.

  According to a fourth aspect of the present invention, in the washing and drying machine according to the second aspect of the present invention, the control means cannot detect whether the opening detection switch or the closing detection switch detects the opening or closing of the air passage, operates the motor again, and then detects the opening. If the close detection switch or the open detection switch detects the close or open of the air passage before the switch or the close detection switch detects the open or close of the air passage again, it is determined that the open time or the close time is too long, The opening or closing time is shortened.

  According to a fifth aspect of the present invention, in the first aspect of the invention, the control means is configured to open or close the opening time or the closing time when the opening detection switch or the closing detection switch cannot detect the opening or closing of the air passage after the motor is operated. Judging that the time is too short, the opening time or the closing time is extended.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, in the first aspect, after the motor is operated, the control means is within a predetermined time after the open detection switch or the close detection switch detects the opening or closing of the air passage. When it is no longer possible to detect the opening or closing of the air passage, it is determined that the opening or closing has failed, and after the motor is operated again, the opening detection switch or the opening detection switch detects the opening before the air passage is closed or opened. When the switch or the close detection switch detects the opening or closing of the air path again, it is judged that the opening time or closing time is insufficient, and the opening or closing time is extended by the first extension time, and again After the motor is operated, the close detection switch or the open detection switch detects whether the air path is closed or open before the open detection switch or the close detection switch detects the open or closed air path again. If it is known that the opening or closing time is too long and the opening or closing time is shortened, and the opening detection switch or closing detection switch cannot detect the opening or closing of the air passage after the motor is operated. The opening time or closing time is judged to be short, and the opening time or closing time is extended by a second extension time longer than the first extension time.

  According to the first aspect of the present invention, the outer tub capable of storing water, and the outer tub is rotatably arranged, has a through hole in the peripheral wall, accommodates the laundry therein, is washed, rinsed, dehydrated And a drum for performing each operation of drying, a drying air supply device for supplying drying air into the drum at the time of drying operation, and the inside of the drum via the through hole at the time of drying operation. The air passage for taking out the air that has flowed into the outer tank from the outside, the exhaust valve that opens the air passage during the drying operation and closes the air passage during other than the drying operation, and drives the exhaust valve to open and close the air passage In a washing and drying machine provided with a driving device, the driving device connects a motor that rotates in one direction, a cam attached to the output shaft of the motor, an output shaft and an exhaust valve, and rotates the output shaft. Link mechanism that operates the exhaust valve, and exhaust valve in contact with the cam And an open detection switch for detecting the opening and closing of the air path, and a control means for controlling the operation of the motor based on the output of each switch. When opening and closing, the motor is operated for a predetermined opening time and closing time from a predetermined starting point, and when it is determined that the opening or closing failure is based on the output of each detection switch after the motor is operated, the opening time Alternatively, the motor is operated again after correcting the closing time, so that the air passage can be reliably opened and closed by controlling the exhaust valve by the control means.

  In particular, as in the invention of claim 2, the control means cannot detect the opening or closing of the air passage within a predetermined time after the opening detection switch or the closing detection switch detects the opening or closing of the air passage. In this case, if it is determined that the opening or closing has failed, the opening / closing of the air passage can be reliably detected.

  According to a third aspect of the present invention, in the second aspect of the invention, the control means is configured such that the open detection switch or the close detection switch cannot detect the opening or closing of the air passage, and after the motor is operated again, the close detection switch Or, when the open detection switch or the close detection switch detects the opening or closing of the air passage again before the open detection switch detects the closing or opening of the air passage, it is judged that the opening time or the closing time is insufficient. Since the opening or closing time is extended, the detection can be detected by the opening detection switch or the closing detection switch once the opening detection switch or closing detection switch detects the opening or closing of the air passage and then the exhaust valve returns. Even if it disappears, it is possible to make a correction to extend the open time or the close time by reliably judging the situation.

  According to the invention of claim 4, in the invention of claim 2, the control means cannot detect the opening or closing of the air passage by the opening detection switch or the closing detection switch, and after operating the motor again, If the close detection switch or the open detection switch detects the close or open of the air passage before the close detection switch detects the open or close of the air passage again, it is determined that the open time or the close time is too long and the open Or, because the closing time is shortened, once the opening detection switch or closing detection switch detects the opening or closing of the air passage, the exhaust valve advances too much and detection by the opening detection switch or closing detection switch becomes impossible Even so, it is possible to perform the correction to shorten the open time or the close time by reliably judging the situation.

  According to a fifth aspect of the present invention, in the first aspect of the present invention, when the open detection switch or the close detection switch cannot detect the opening or closing of the air passage after the motor is operated, Since the opening time or closing time is extended because it is judged to be too short, the air passage is not fully open due to insufficient opening time, or the air passage is not completely closed due to insufficient closing time. It is possible to perform a correction that extends the open time or the close time by reliably judging the situation.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, after the motor is operated, the control means detects the air flow within a predetermined time after the open detection switch or the close detection switch detects the opening or closing of the air passage. When it is no longer possible to detect the opening or closing of the road, it is determined that the opening or closing has failed, and after the motor is operated again, before the closing detection switch or the opening detection switch detects the closing or opening of the air path, If the close detection switch detects the opening or closing of the air path again, it is judged that the opening time or closing time is insufficient, the opening or closing time is extended by the first extension time, and the motor is turned on again. After driving, the close detection switch or the open detection switch detects the close or open of the air passage before the open or close detection switch detects the open or close of the air passage again. In this case, it is determined that the open time or the close time is too long, and the open or close time is shortened. Judging that the opening time or closing time is short and extending the opening time or closing time by a second extension time that is longer than the first extension time, it is possible to reliably determine the open / close state of the air passage and respond accordingly Thus, the opening time or closing time can be appropriately corrected.

  Generally, the exhaust valve can be appropriately controlled by the control means, so that the air passage can be more reliably opened and closed.

It is the perspective view which looked at the washing-drying machine of one Example to which this invention was applied from front diagonally right side. It is the schematic sectional drawing which looked at the vertical side when the washing-drying machine of FIG. 1 was cut | disconnected along the front-back direction from the right side. FIG. 3 is a partially enlarged view of the exhaust valve periphery shown in FIG. 2 as viewed from the front. FIG. 3 is another partially enlarged front view of the exhaust valve periphery shown in FIG. 2 as viewed from the front. It is an enlarged view of the broken line part A of FIG. It is an enlarged view of the broken-line part B of FIG. It is a control block diagram of the controller of the washing and drying machine of FIG. It is a flowchart of control which determines the initial value of opening time and closing time. It is a flowchart of control which determines closing time. It is a flowchart of control which determines open time.

  FIG. 1 is a perspective view of a washing / drying machine 1 according to an embodiment to which the present invention is applied as viewed obliquely from the front right side, and FIG. 2 is a longitudinal side view of the washing / drying machine 1 of FIG. The schematic sectional drawing which looked at from the right side is shown, respectively. The laundry dryer 1 is capable of performing a washing operation for washing, rinsing, and dehydrating laundry such as futons and clothes, and a drying operation for drying the laundry, and is mainly used in a coin laundry. It is a commercial drum-type washing and drying machine.

  As shown in each figure, the outer side of the washing / drying machine 1 of the present embodiment is configured by a substantially box-shaped main body 2 having an inclined surface in which an upper front portion is inclined downward and obliquely forward. On the inclined surface of the main body 2, an opening / closing door 3 for opening and closing the outlet 4 for taking in and out the laundry is attached.

  And in the main body 2, as shown in FIG. 2, the outer tank 5 which can store water is provided. The outer tub 5 is disposed in the main body 2 such that its central axis is inclined upward toward the front side, and is supported by the main body 2 so as to be swingable. The outer tub 5 has a hollow, substantially cylindrical shape having an annular peripheral wall 6 and a disk-shaped bottom wall 7 located at the lower end (lower back surface) of the peripheral wall 6. The peripheral wall 6 is reduced in diameter by one step from the other part on the upper side (this part is referred to as a small diameter part 8), and the outlet 4 of the main body 4 is located at the front end (front end face) of the small diameter part 8. The inside of the outer tub 5 is configured to be able to communicate with the outside of the main body 2 through the outlet 4. In the peripheral wall 6, the large-diameter portion below the small-diameter portion 8 described above is referred to as a large-diameter portion 9, and a portion that connects the small-diameter portion 8 and the large-diameter portion 9 is a connection portion 10. Shall be called.

  A water supply pipe 50 is connected to the small diameter portion 8. The water supply pipe 50 is a water supply passage for supplying water into the outer tub 5 and a drum 15 which will be described later, and one end of the water supply pipe 50 is provided with tap water provided outside via a water supply valve 51. It is connected to a water supply source such as a water supply facility that supplies (low temperature water) or a hot water supply facility that supplies hot water. The water supply pipe 50 extends from one end connected to a water supply source, enters the main body 2 from the back of the washing / drying machine 1, extends forward, enters the small diameter portion 8, and enters the small diameter portion 8. The other end is open inside. The opening / closing operation of the water supply valve 51 is controlled by a controller C described later. When the water supply valve 51 is opened by the controller C, tap water or hot water (hereinafter referred to as “water supply”) is introduced into the large-diameter portion 9 and the drum 15 of the outer tub 5 from the opening at the other end of the water supply pipe 50 through the connecting portion 10. Simply called water). And if the said water supply valve 51 is closed, supply of the water from the water supply source supplied via the water supply pipe 50 will be stopped.

  Further, an air supply pipe 52 for supplying air heated by a heating device (not shown) is also connected to the small diameter portion 8. The air supply pipe 52 is a heated air supply passage for supplying the air heated by the heating device into the drum 15 through the small diameter portion 8 and the connecting portion 10 of the outer tub 5. The heating device is a device for generating heated air for drying laundry. The heating device according to the present embodiment includes a gas burner for generating heated air, a gas pipe for supplying gas used in the gas burner, and a gas heating device 60 including a gas valve provided in the gas pipe. These are arranged above the outer tub 5 and in parallel with a second passage 44 constituting a part of an air passage 40 described later.

  Specifically, in this embodiment, a second passage 44 is formed on the right side of the space provided along the top wall 2A below the top wall 2A of the main body 2 shown in FIG. A storage chamber (not shown) is juxtaposed, and a gas heating device 60 is disposed in the storage chamber. In addition, one end of the air supply pipe 52 opens into the accommodation chamber. The supply pipe 52 exits the accommodation chamber from one end, extends downward in the front side, is connected to the small-diameter portion 8 of the outer tub 5, and the other end is inside the small-diameter portion 8. Open at.

  For example, a gas supply port (not shown) is formed on the back surface of the main body 2 and the gas used in the gas burner is configured to be introduced into the main body 2 of the washing / drying machine 1 from the gas supply port. During the drying operation, the gas valve of the gas heating device 60 is opened by the controller C of the washing / drying machine 1, and the gas introduced into the main body 2 of the washing / drying machine 1 is supplied from the gas supply port to the gas burner. Heated air is generated by the action of.

  Note that the generated heated air is supplied from the storage chamber in which the gas heating device 60 is installed to the small diameters of the supply pipe 52 and the outer tank 5 by the operation of a supply / exhaust fan 48F for supply / exhaust provided in the air passage 40 described later. The portion 8 and the connecting portion 10 are sequentially supplied to the large-diameter portion 9 of the outer tub 5 and the drum 15 provided inside thereof.

  On the other hand, the drum 15 described above is provided inside the peripheral wall 6 that becomes the large-diameter portion 9 of the outer tub. The drum 15 is positioned at a substantially annular peripheral wall 17, an opening 18 provided corresponding to the connecting portion 10 of the outer tub 5 at the upper end of the peripheral wall 17, and a lower end (lower back surface) of the peripheral wall 17. It has a hollow and substantially cylindrical shape having a disk-like bottom wall 19, and a hollow portion surrounded by the peripheral wall 17 and the bottom wall 19 is a storage chamber for storing laundry. A plurality of through holes 20 through which air and water can circulate are formed in the peripheral wall 17 constituting the drum 15. The through hole 20 is a hole through which water flows into the drum 15 and out of the drum 15 into the outer tub 5 during washing operations such as washing, rinsing, and dewatering of the laundry. . On the other hand, during the drying operation for drying the laundry, it becomes a hole through which drying air flows.

  Similarly to the outer tub 5, the drum 15 is also arranged such that its central axis is inclined upward toward the front side. A drum shaft 21 is integrally provided at the center of the bottom wall 19 of the drum 15. The drum shaft 21 extends from one end (upper end) integrally provided at the center of the circle of the bottom wall 19 of the drum 15 to the lower rear side along the center axis of the drum 15, and the bottom wall 7 of the outer tub 5 extends. It penetrates and the other end (lower end) is located on the lower rear side outside the outer tub 5. A drum pulley 32 is attached to the other end (lower end) of the drum shaft 21.

  The drum pulley 32 is connected to a motor pulley 34 of the drum motor 30 via a belt 35. The drum motor 30 is a driving device for rotationally driving the drum 5, and is installed in the main body 2 in the vicinity of the bottom wall 7 of the outer tub 5. In the present embodiment, as shown in FIG. 2, the drum motor 30 is disposed in the main body 2 above the rear corner of the outer tub 5 (in the vicinity of the upper end of the bottom wall 7 of the outer tub 5), that is, on the peripheral wall. 6 is installed in the main body 2 above the corner where the extension line extending downward and rearward along the upper peripheral surface 6A and the extension line extending upward along the bottom wall 7 intersect.

  A motor pulley 34 is attached to the output shaft 31 of the drum motor 30. A belt 35 is wound around the drum pulley 32 and the motor pulley 34 with a predetermined attractive force, and the motor pulley 34 and the drum pulley 32 of the drum motor 30 are connected via the belt 35 as described above. . Therefore, when the drum motor 30 is driven, the driving force is transmitted to the drum shaft 21 via the motor pulley 34, the belt 35 and the drum pulley 32.

  Thereby, in the outer tub 5, the drum 15 rotates around the drum shaft 21 (same as the central axis of the drum 15). The drum motor is not limited to the configuration of the present embodiment described above. For example, the belt 35 and the pulleys 32 and 34 may be omitted, and a DD motor directly connected to the drum shaft 21 may be used as the drum motor.

  On the other hand, as shown in FIG. 2, a valve chamber 41 is formed on the upper peripheral surface 6A of the peripheral wall 6 of the outer tub 5 at a substantially center in the front-rear direction of the upper peripheral surface 6A. A first passage 42 constituting a part of the air passage 40 is formed. In addition, one end of a drain pipe 55 communicating with the inside (internal space) of the outer tub 5 is connected to the rear end portion of the lower peripheral surface 6B of the peripheral wall 6 of the outer tub 5. The drain pipe 55 extends from one end opened inside the outer tub 5 to the lower front side of the outer tub 5, bends near the bottom wall 2B of the main body 2 and extends rearward, and the other end is the main body. It faces the outside from the back of 2. A drain valve 56 is provided in the middle of the drain pipe 55 (not shown in FIG. 2). The opening / closing operation of the drain valve 56 is controlled by a controller C which will be described later. When the valve C is closed by the controller C, the water supplied from the water supply pipe 50 to the outer tub 5 is put into the outer tub 5. Can store water. When the valve 56 is opened, the water in the outer tub 5 can be discharged to the outside of the washing / drying machine 1 through the drain pipe 55.

  Here, the air passage 40 described above will be described. The air passage 40 is an exhaust passage formed to take out air that has flowed out of the drum 15 into the outer tub 5 through the plurality of through holes 20 formed in the peripheral wall 6 of the drum 15. The air passage 40 of the present embodiment is in direct communication with the outer tub 5 (specifically, the valve chamber 41) and has a first passage 42 having a predetermined space inside, and the outer tub 5 of the passage 42. A bellows-like hose 43 communicating with an end (upper end) opposite to the connecting side and having flexibility and heat resistance, and a side of the hose 43 opposite to the side connected to the first passage 42. The second passage 44 communicates with the end (upper end).

  The second passage 44 is provided along the top wall 2A of the main body 2 as described above. Specifically, the second passage 44 has a lower passage 45 extending upward from the lower opening communicating with the upper end of the hose 43, and communicates in the space on the front side with the passage 45. An upper passage 46 extending rearwardly along 2A and located above the passage 45; an exhaust chamber 48 located behind the passages 45 and 46 and communicating with the rear end of the upper passage 46; An exhaust cylinder 49 communicates the inside of the exhaust chamber 48 with the outside.

  The exhaust chamber 48 is provided with the above-described supply / exhaust fan 48F for supply / exhaust. When the fan 48F is driven to rotate, the air in the exhaust chamber 48, that is, the air in the outer tub 5 and the drum 15 is exhausted through the hose 43, the lower passage 45 of the second passage 44, and the upper passage 46 sequentially. It flows into the chamber 48 and is sucked into the fan 48F provided there. Further, the sucked air is discharged to the upper side of the fan 48F, and is discharged to the outside of the main body 2 (washer / dryer 1) from the exhaust tube 49 provided corresponding to the position where the air sucked by the fan 48F is discharged. Will be.

  In addition, a filter 47 is provided in the middle of the upper passage 46, and the filter 47 allows fibers from the laundry such as futons and clothes mixed in the air from the outer tub 5 and the drum 15 to be removed. It is configured so that lint etc. can be captured.

  On the other hand, the first passage 42 communicating with the outer tub 5 is a passage extending in the vertical direction, and is connected to the upper end of the valve chamber 41 described above at the lower end and to the hose 43 at the upper end. The lower end of the first passage 42, that is, the opening 40 </ b> A communicating with the valve chamber 41 is an inlet of the air passage 40. The opening (air passage 40 inlet) 40A at the lower end of the first passage 42 has a smaller diameter than other portions. The upper end of the valve chamber 41 is connected to the first passage 42 through the opening 40A. An exhaust valve 70 is installed inside the valve chamber 41.

  The exhaust valve 70 is a valve for opening and closing the air passage 40 provided to prevent inconvenience that water accumulated in the outer tub 5 and the drum 15 enters the air passage 40. The exhaust valve 70 is disposed in the valve chamber 42 and closes the opening 40A of the air passage 40 from the valve chamber 42 side (lower side) so as to be opened and closed.

  The exhaust valve 70 has a flat plate shape having a size that can sufficiently close the opening (air channel 40 inlet) 40A at the lower end of the first passage 42. One end (lower end) of a second link portion 82 as a support shaft of the exhaust valve 70 is attached to the upper surface of the exhaust valve 70. The second link portion 82 extends rearward and upward from one end (lower end) located on the upper surface of the exhaust valve 70, passes through the opening 40A and the first passage 42, and the other end (upper end) is It is connected to an output shaft 77 of a motor 76 (exhaust valve motor) of a drive device 75 provided in a motor 72 chamber located above the rear side of the first passage 42 via a first link portion 81 (FIG. 3). And FIG. 4). The motor chamber 72 is a space that is located on the upper rear side of the first passage 42 and communicates with the first passage 42. The motor 76 accommodates an exhaust valve motor 76.

  The drive device 75 is for driving the exhaust valve 70 to open and close the air passage 40. Here, the driving device 75 of the exhaust valve 70 of the present invention will be described in detail with reference to FIGS. 3 and 4 are views of the periphery of the exhaust valve 70 viewed from the front, FIG. 5 is an enlarged view of the broken line portion A in FIG. 3, and FIG. 6 is an enlarged view of the broken line portion B in FIG. . 3 to 6, the same reference numerals as those in FIG. 1 and FIG. 2 have the same or similar effects or actions, so the description will be given here. Shall be omitted.

  The drive device 75 of the present invention connects a motor 76 (FIG. 7) that rotates in one direction, a cam 78 attached to an output shaft 77 of the motor 76, an output shaft 77, and an exhaust valve 70, and outputs an output shaft. The link mechanism 80 including the first link portion 81 and the second link portion 82 that actuate the exhaust valve 70 by the rotation of 77 and the second region 78B of the cam 78 are in contact with the air passage 40 closed by the exhaust valve 70 (closed). (Close state detection switch SW1 for detecting the state) (FIG. 6), and similarly, an open detection for detecting the opening (open state) of the air passage 40 by the exhaust valve 70 in contact with the second region 78B of the cam 78. A switch SW2 (FIG. 5) and a controller C (FIG. 7) as control means for controlling the operation of the motor 76 based on the outputs of the switches SW1 and SW2 are provided.

  The motor 76 is a so-called AC motor that causes an alternating current to flow through a stator winding to generate a rotating magnetic field and rotate the rotor in the rotating magnetic field. Further, the output shaft 77 of the motor 76 is a rotation shaft of the motor 76 itself. When a speed reduction mechanism is connected to the motor output shaft, the output shaft 77 is an output shaft of the speed reduction mechanism.

  One end of the first link portion 81 of the link mechanism 80 is attached to the output shaft 77 of the motor 76 and is rotatably provided by rotation of the output shaft 77 with the one end attached to the output shaft 77 as a rotation center. . A second link portion 82 is pivotally supported by a pivot pin 83 in the vicinity of the tip farthest from the rotation center of the first link portion 81.

  Further, the cam 78 is an eccentric cam having the output shaft 77 as a center of rotation, and the wheel shaft thereof is relatively closer to the output shaft 77 and is farther from the output shaft 77 than the first region 78A. And the second region 78B. Further, the close detection switch SW1 and the open detection switch SW2 are mounted at positions that are substantially symmetrical about the output shaft 77 and that can come into contact with the second region 78B of the cam 78. Specifically, the closing detection switch SW1 closes the opening 40A when the exhaust valve 70 attached via the link mechanism 80 comes into contact with the lower end 2 of the opening 40A where the exhaust valve 70 is closed. Is positioned to contact the second region 78B of the cam 78. The open detection switch SW2 is configured so that the second region of the cam 78 is moved when the exhaust valve 70 attached via the link mechanism 80 moves to a position farthest from the opening 40A that is the open position of the exhaust valve 70. Positioned to contact 78B.

  These switches SW1 and SW2 are connected to the controller C. When the close detection switch SW1 comes into contact with the second region 78B of the cam 78, an electrical signal is sent from the close detection switch SW1 to the controller C. While the signal is transmitted, the controller C determines that the air passage 40 is closed by the exhaust valve 70. When the open detection switch SW2 comes into contact with the second region 78B of the cam 78, an electrical signal is sent from the open detection switch SW2 to the controller C. While the signal is being transmitted, the controller C determines that the air passage 40 is open by the exhaust valve 70.

  Here, when the motor 76 is driven, the output shaft 77, the cam 78 attached to the output shaft 77, and the first link portion 81 of the link mechanism 80 are connected to the output shaft 77 as shown by arrows in FIGS. Rotate counterclockwise around the center. When the motor 76 rotates, the exhaust valve 70 attached to the lower end of the second link portion 82 moves through the first link portion 81. Specifically, if the exhaust valve 70 is in the state shown in FIG. 5, the front end side of the first link portion 81 and the other end (upper end) of the second link portion 82 pivotally supported by the rotation are moved downward. The exhaust valve 70 is gradually lowered and the exhaust valve 70 attached thereto moves downward in the front side. And when the front end side of the 1st link part 81 becomes the lowest side as shown in FIG. 6, the exhaust valve 70 also reaches | attains the open position furthest away from the opening 40A. At this time, the second region 78B of the cam 76 is in contact with the open detection switch SW2.

  Further, when the motor 76 is further rotated from the state shown in FIG. 6, the distal end side of the first link portion 81 and the other end (upper end) of the second link portion 82 pivotally supported by the rotation gradually move upward. As a result, the exhaust valve 70 attached thereto is moved upward in the rear side. And when the front end side of the 1st link part 81 becomes the uppermost side as shown in FIG. 5, the exhaust valve 70 contacts the lower surface 2 of the opening 40A and reaches the open position where the opening 40A is closed. At this time, the second region 78B of the cam 76 is in contact with the close detection switch SW1. In each figure, reference numeral 85 denotes a stopper for preventing the cam 78 from rotating in the direction opposite to the rotation direction of the motor 76.

  On the other hand, FIG. 7 is a control block diagram showing an electrical configuration of the controller C described above. The controller C is a control unit that controls the washing / drying machine 1, and the operation of the washing / drying machine 1 of this embodiment is controlled by the controller C. As shown in FIG. 7, an operation panel P, an open detection switch SW2 of the exhaust valve 70, and a close detection switch SW1 are connected to the input side. A water supply valve 51, a drain valve 56, a drum motor 30, a motor 76 of an exhaust valve 70, a supply / exhaust fan 48F, and a gas heating device 60 are connected to the output side. The controller C opens and closes the valves 51 and 56 connected to the output side, the motors 30 and 76, and the fan 48F based on the operation of the switches SW1 and SW2 and the operation panel P connected to the input side. In addition, operations such as driving and stopping of the gas heating device 60 are controlled.

  Next, the operation of the washing / drying machine 1 according to this embodiment will be described. In the present embodiment, the description will be made assuming that the futon is washed and dried as the laundry. The washing / drying operation of the washing / drying machine 1 includes a washing operation including a preliminary operation before the washing operation, a washing step for washing the laundry, a rinsing step for washing the laundry, and a dehydration step for dehydrating the laundry, The drying operation for drying the laundry is sequentially executed by the controller C. Further, the exhaust valve 70 is controlled by the controller C so as to be in a position where the air passage 40 is always closed except in the drying operation, that is, in the closed position.

  When the futon is accommodated in the drum 15, the user first folds the futon in the short direction and rolls the futon so that the longitudinal direction of the folded futon is along the inner peripheral surface of the peripheral wall 17 of the drum 15. In the state where the futon is bent and rounded, it is accommodated in the drum 15 from the crease side through the outlet 4 and the opening 18. Thereby, the futon can be accommodated in the drum 15 along the inner peripheral surface of the peripheral wall 17 of the drum 15.

  In particular, in the washer / dryer 1 of the present embodiment, the drum shaft 21 (the central axis of the drum 15) is inclined so that the opening 18 on the upper side of the drum 15 faces obliquely upward. Easy to put in and out.

  The accommodation of the futon in the drum 15 is completed, the outlet 4 and the opening 18 of the drum 5 are closed by the open / close door 3, and the switch is operated to perform washing and drying of the operation panel P (see FIG. 7) by the user. Then, prior to the washing operation, first, the controller C drives the drum motor 30 for a predetermined short time (for example, 30 seconds to 1 minute) (preliminary operation). Thereby, the drum 15 rotates. The number of rotations of the drum 15 at this time is higher than that in the washing step of the washing operation described later, and is, for example, 500 rpm to 600 rpm.

  As the drum 15 rotates in this way, centrifugal force is generated in the futon accommodated in the drum 15. Therefore, as described above, even if the user does not place the futon along the inner peripheral surface of the peripheral wall 17 of the drum 15, the user can neatly fit the futon along the inner peripheral surface of the peripheral wall 17 of the drum 15. Thereby, a user's labor can be saved. Further, since the futon is placed along the inner peripheral surface of the peripheral wall 17 of the drum 15, the eccentric rotation of the drum 15 can be prevented, so that stable washing (without washing unevenness and drying unevenness) can be performed and dried. . As described above, since the drum 15 always rotates in one direction, the futon can be prevented from being rubbed and damaged by the inner peripheral surface of the drum 15 as compared with the case where the forward rotation and the reverse rotation are repeated.

  When the drum motor 30 is driven as described above and a predetermined short time has elapsed, the controller C then proceeds to the washing step of the washing operation. At this time, the controller C decelerates the rotational speed of the drum 15 within a range where the futon can be kept pressed against the peripheral wall 17 of the drum 15. In the washing and drying of the futon, the drum 15 is not stopped during the entire process period from the preliminary operation to the drying operation in order to prevent damage due to rubbing of the futon.

  In the washing process, the controller C opens the water supply valve 51 after closing the drain valve 56. Thereby, water is supplied to the outer tub 5. The water supplied into the outer tub 5 accumulates in the outer tub 5 in order from the lower end of the bottom wall 7 of the outer tub 5 which is the lowest side. The water accumulated in the outer tub 5 also flows into the drum 15 through the through hole 20 in the peripheral wall 17 of the drum 15 and soaks into the futon. In this case, it is assumed that a liquid detergent sucked by a pump (not shown) is dissolved in this water in advance. Due to the detergent component dissolved in the water, the futon dirt is decomposed and removed by performing a washing process.

  Here, as described above, the exhaust valve 70 is always in the closed position except for the drying operation, that is, the exhaust valve 70 closes the opening 40A of the air passage 40 (see FIG. 3). Therefore, in the washing operation, the exhaust valve 70 can block the water in the outer tub 5 from flowing into the air passage 40 (the same applies to the rinsing step and the dehydrating step described later). Thereby, this water can be prevented from entering the air passage 40 above the exhaust valve 70, and the inconvenience that the air passage 40 gets wet can be prevented.

  On the other hand, when a predetermined amount of water is accumulated in the outer tub 5, the controller C closes the water supply valve 51 and controls the drum motor 30 so as to be slower than the preliminary operation, so that the drum 15 is kept for a predetermined time. For example, the controller C controls the drum motor 30 so that the rotational speed of the drum 15 is maintained at 185 rpm. As the drum 15 rotates, centrifugal force acts on the water in the drum 15. Thereby, the water in the drum 15 can be distributed evenly to the inside of the futon, and the futon can be washed carefully.

  And if predetermined time passes after starting a washing process, controller C will transfer to a rinse process next. The controller C proceeds to the rinsing process from the washing process without stopping the drum motor 30 while maintaining the rotation of the drum 15. The drum motor 30 is controlled by the controller C so that the number of rotations of the drum 15 in the rinsing step is the same as the number of rotations in the washing step. In the rinsing process, the controller C executes the rinsing process continuously in a period corresponding to two times, with 2 to 3 minutes being one rinsing period.

  The rinsing process will be described in detail. First, the controller C opens the drain valve 56 and discharges water (wash water) in the outer tub 5 and the drum 15 to the outside through the drain pipe 55. At this time, as described above, since the drum 15 is maintained in a rotated state without being stopped, the futon is dehydrated (intermediate dehydration) during the drainage (while the drainage valve 56 is open). The Rukoto. When the water (wash water) in the outer tub 5 and the drum 15 is discharged, the controller C then closes the drain valve 56 and then opens the water supply valve 51. As a result, water (rinse water) is supplied into the drum 15 and the futon is rinsed. When a predetermined amount of water (rinse water) is supplied, the controller C closes the water supply valve 51, stops the supply of water (rinse water), and continues to execute the rinsing of the futon. Thus, the drain valve 56 is opened, the water supply valve 51 is closed from the operation of draining the water in the outer tub 5 and the drum 15, the supply of water is stopped, and the rinsing is continued until a predetermined time elapses. As one rinsing operation, the controller C repeats the operation twice.

  When the second rinsing operation is completed, that is, when the second water supply is stopped and a predetermined time has elapsed, the controller C follows the rinsing process (that is, without stopping the rotation of the drum 15). Move to dehydration process. In the dehydration step, the controller C opens the drain valve 56 with the water supply valve 51 closed, and discharges the water in the outer tub 5 and the drum 15 to the outside through the drain pipe 55. In the dehydration process, the controller C controls the drum motor 30 so that the rotation speed of the drum 15 is faster than that of the washing process and the rinsing process, for example, the rotation speed is relatively high, 800 rpm to 850 rpm. Thereby, the centrifugal force larger than the washing process and the rinsing process is applied to the futon in the drum 15. As a result, the moisture soaked into the futon by the centrifugal force is squeezed out and discharged to the outside. The dehydration step is performed for 10 minutes, for example.

  When a predetermined time (10 minutes in the above) has elapsed since the start of the dehydration process, the controller C ends the dehydration process, and then continues the dehydration process (that is, stops the rotation of the drum 15). None) Move to dry operation. In this drying operation, the controller C controls the drum motor 30 so that the rotational speed of the drum 15 is relatively low, 40 rpm to 50 rpm. In the drying operation, the water supply valve 51 is closed and the drain valve 56 is also closed, as in the dehydration step. If the drain valve 56 remains open, the negative pressure of the outer tub 5 causes the sewage odor to flow backward, which may adhere to the futon (laundry). 56 shall be closed.

  In the drying operation, the controller C drives the exhaust valve motor 76 to move the exhaust valve 70 to the open position. Specifically, as described above, when the controller C drives the exhaust valve motor 76, the output is transmitted to the first link portion 81 of the link mechanism 80 via the output shaft 77. Further, the first link portion 81 is transmitted to the second link portion 82 pivotally supported on the tip end side, and as a result, the exhaust valve 70 attached to the lower end of the second link portion 82 is The two links 82 move according to the operation. In this case, as described above, when the controller C drives the exhaust valve motor 76, the output shaft 77 and the cam 78 attached to the output shaft 77 rotate. At the same time, the rotational force is transmitted to the exhaust valve 70 via the link mechanism 80 attached to the output shaft 77.

  As a result, the exhaust valve 70 that has been in the state of closing the opening 40A of the air passage 40 (that is, the closed position) starts to move forward and downward. Similarly, the cam 78 attached to the output shaft 77 also rotates, and the second region 78B of the cam 78 that has been in contact with the close detection switch SW1 is separated from the close detection switch SW1.

  On the other hand, when the exhaust valve motor 76 is driven to reach the position farthest from the opening 40A, that is, the open position (the state shown in FIG. 4), the second region 78B of the cam 78 is simultaneously opened. It contacts SW2 (state of FIG. 6). At this time, an electrical signal is sent from the open detection switch SW2 to the controller C to notify that the opening of the air passage 40 has been detected. As a result, the controller C determines that the air passage 40 is open, and stops the exhaust valve motor 76. As described above, when the air passage 40 closed by the exhaust valve 70 is opened, the accommodation chamber in which the gas heating device 60 is accommodated, the air supply pipe 52, the outer tub 5, the drum 15, and the air passage 40 are communicated. The

  Furthermore, in the drying operation, the controller C starts the supply / exhaust fan 48F provided in the exhaust chamber 48 and activates the gas heating device 60 simultaneously with the driving of the exhaust valve motor 76 described above. Specifically, as described above, the controller C opens the gas valve of the gas heating device 60, supplies the gas introduced into the washing dryer 1 to the gas burner, and ignites the gas burner. Further, the suction force generated by the operation of the supply / exhaust fan 48F generates a negative pressure in the accommodation chamber, the supply pipe 52, the outer tub 5, the drum 15, and the air passage 40 that are in communication. Due to the generation of such negative pressure, outside air is sucked from the storage chamber. The sucked air is heated by the gas burner of the gas heating device 60 in the process of flowing through the storage chamber. The heated air is supplied into the drum 15 from the opening 18 through the connection portion 10 via the air supply pipe 52 and the small diameter portion 8 of the outer tub 5.

  The heated air supplied into the drum 15 fills the drum 15 and takes away moisture from the futon. And the air which became the state containing moisture by taking a water | moisture content from a futon flows out into the outer tank 5 from the through-hole 20 of the surrounding wall 17 after that. Then, the air passes through the valve chamber 41 and flows into the first passage 42 of the air passage 40 from the open opening 40A. That is, air that has flowed out of the drum 15 into the outer tub 5 through the through hole 20 is sucked into the air passage 40. The air that has flowed into the air passage 40 ascends the first passage 42 and the hose 43 sequentially, enters the second passage 44, and passes through the filter 47. At this time, foreign matters contained in the air (fibers and lint etc. from laundry such as clothes) are captured by the filter 47.

  Thereafter, the air that has passed through the filter 47 enters the exhaust chamber 48, is sucked into an air supply / exhaust fan 48F provided therein, and is then discharged upward, and the above-described exhaust pipe provided corresponding to this discharge position. 49 to the outside of the main body 2 (washing and drying machine 1). Such a drying operation is performed for 40 minutes, for example. And the controller C will stop the gas heating apparatus 60, if this drying operation is performed for 40 minutes. Specifically, the gas valve of the gas heating device 60 is closed to cut off the gas supply to the gas burner.

  Next, the controller C stops the operation of the supply / exhaust fan 48F and drives the exhaust valve motor 76 to move the exhaust valve 70 to the closed position. Specifically, when the controller C drives the exhaust valve motor 76, the output is transmitted to the first link portion 81 of the link mechanism 80 via the output shaft 77. Further, it is transmitted to the second link portion 82 pivotally supported at the tip thereof via the first link portion 81, and as a result, the exhaust valve 70 attached to the lower end of the second link portion 82 is connected to the second link portion 82. It moves according to the operation of the link part 82. In this case, as described above, when the controller C drives the exhaust valve motor 76, the output shaft 77 and the cam 78 attached to the output shaft 77 rotate. At the same time, the rotational force is transmitted to the exhaust valve 70 via the link mechanism 80 attached to the output shaft 77.

  As a result, the exhaust valve 70 that has been in the state of opening the opening 40A of the air passage 40 (that is, the open position) starts to move rearward and upward. Simultaneously with the rotation of the output shaft 77, the cam 78 attached to the output shaft 77 also rotates, and the opening detection switch SW2 is separated from the second region 78B of the cam 78 that has been in contact with the opening detection switch SW2.

  On the other hand, when the exhaust valve 70 comes into contact with the lower surface of the opening 40A by driving the exhaust valve motor 76 and reaches the position where the opening 40A is closed, that is, the closed position (the state of FIG. 3), the cam 78 The second region 78B comes into contact with the closing detection switch SW1 (state shown in FIG. 5). At this time, an electrical signal is sent from the closing detection switch SW1 to the controller C to inform the controller C that the closing of the air passage 40 has been detected. Thus, the controller C determines that the air passage 40 is closed, and stops the exhaust valve motor 76. As a result, the air passage 40 is closed by the exhaust valve 70. As described above, in the drying operation, the exhaust valve 70 is moved to the open position to open the air passage 40, while in the operation other than the drying operation, the exhaust valve 70 is moved to the closed position to close the air passage 40. Therefore, for example, water supplied into the outer tub 5 during the washing operation can be prevented from entering the air passage 40.

  By the way, in such a washing / drying machine 1, the controller C determines the closed position and the open position of the exhaust valve 70 based on the detection of the close detection switch SW1 and the open detection switch SW2 as described above, and the exhaust valve 70 is controlled. When the operation of the activated exhaust valve motor 76 is controlled, even if the controller C stops the exhaust valve motor 76 based on the inputs of the close detection switch SW1 and the open detection switch SW2, the exhaust valve 70 must be stopped immediately. However, it moves a little with inertia. In this case, when the air passage 40 is opened, that is, when the exhaust valve 70 is stopped at the open position, even if the exhaust valve 70 stops with a slight deviation from the open position, there is not much influence, but from the closed position. When stopped by shifting, the exhaust valve 70 cannot completely close the opening 40A of the air passage 40, so that water in the outer tub 5 may enter from the opening 40A of the air passage 40. However, since the stop error varies depending on the number of times the washing dryer 1 is used, the ambient temperature, and the like, conventionally, the exhaust valve 70 is controlled to ensure that the opening 40A of the air passage 40 is completely closed every time. I couldn't.

  Therefore, in the present invention, in order to reliably open and close the air passage 40 by the exhaust valve 70, and in particular, to close the air passage 40 every time, the controller C opens and closes the air passage 40 by the exhaust valve 70. The time required to start the exhaust valve motor 76 and reach the open position from the predetermined starting point is determined in advance as the open time, and similarly, the time required to reach the closed position from the predetermined starting point is set as the close time. It shall be determined in advance. Then, the controller C sets the determined opening time and closing time as initial values (initial setting). Next, the controller C drives and stops the motor 76 for the opening time and the closing time determined in advance as described above from the predetermined starting point. Then, the position of the exhaust valve 70 is determined based on the outputs of the detection switches SW1 and SW2 after the motor 76 is operated.

  Specifically, the motor 76 is operated and stopped for a predetermined opening time (initial value) from a predetermined starting point. In this case, if the open detection switch SW2 detects the opening of the air passage 40, the controller C determines that the opening is successful. On the other hand, if the opening detection switch SW2 does not detect the opening of the air passage 40, it is determined that the opening has failed. If it is determined that the opening has failed, the controller C corrects the opening time and operates the motor 76 again.

  Similarly, the controller C operates and stops the motor 76 for a closing time (initial value) determined in advance from a predetermined starting point. In this case, if the closing detection switch SW1 detects the closing of the air passage 40, the controller C determines that the closing is successful. If the controller C determines that the closing has failed, the controller C corrects the closing time and operates the motor 76 again.

  As a determination method for the opening failure or the closing failure, the controller C operates the motor 76 for a predetermined opening time and closing time from a predetermined starting point, and each detection switch after the motor 76 is operated (after stopping). When the opening or closing of the air passage 40 by SW2 or SW1 is not detected at all, it is determined that the opening or closing has failed. In this case, the controller C determines that the opening time or the closing time is too short, and performs correction for extending the opening time or the closing time.

  Furthermore, the controller C operates the motor 76 for a predetermined opening time and closing time from a predetermined starting point, and after the motor 76 is operated (after stopping), the opening detection switch SW2 or the closing detection switch SW1 is connected to the air passage 40. Even when the opening or closing of the air passage 40 cannot be detected within a predetermined time after the opening or closing of the air is detected, it is determined that the opening or closing has failed.

  As described above, when the open detection switch SW2 or the close detection switch SW1 detects the opening or closing of the air passage 40, when the opening or closing of the air passage 40 cannot be detected within a predetermined time, the controller C After operating the motor 76 again, before the closing detection switch SW1 or the opening detection switch SW2 detects the closing or opening of the air passage 40, the opening detection switch SW2 or the closing detection switch SW1 detects the opening or closing of the air passage 40 again. In this case, the controller C determines that the opening time or closing time is insufficient, and extends the opening or closing time.

  On the other hand, after the open detection switch SW2 or the close detection switch SW1 detects the opening or closing of the air passage 40, when the opening or closing of the air passage 40 cannot be detected within a predetermined time, the motor 76 is operated again. Thereafter, when the close detection switch SW1 or the open detection switch SW2 detects the close or open of the air passage 40 before the open detection switch SW2 or the close detection switch SW1 detects the open or close of the air passage 40 again, the controller C determines that the opening time or closing time is too long, and shortens the opening or closing time.

  Here, the opening / closing control operation of the exhaust valve 70 by the controller C will be described in detail with reference to the drawings. First, a control operation for initially setting the opening time and closing time of the exhaust valve 70 will be described with reference to the flowchart shown in FIG. The initial setting operation is performed by the controller C when the washing / drying machine 1 is installed and the power is turned on for the first time. The controller C first activates the motor 76 in step S1, and proceeds to step S2. Then, when the close detection switch SW1 is separated from the state where it is in contact with the second region 78B of the cam 78, that is, when the close detection switch SW1 is in a state where the close is not detected, the process proceeds to step S3. To do.

  Hereinafter, a state in which the close detection switch SW1 is in contact with the second region 78B of the cam 78, that is, a state in which the close detection switch SW1 detects the close is abbreviated as HIGH of the close detection switch SW1, and the close detection switch A state where SW1 is separated from the second region 78B of the cam 78, that is, a state where the close detection switch SW1 does not detect the close is abbreviated as LOW of the close detection switch SW1. Similarly, the state in which the open detection switch SW2 is in contact with the second region 78B of the cam 78, that is, the state in which the open detection switch SW2 is detected to be open is abbreviated as HIGH of the open detection switch SW2, and the open detection switch SW2 Of the cam 78 away from the second region 78B, that is, the state in which the open detection switch SW2 does not detect opening is abbreviated as LOW of the open detection switch SW2.

  As described above, when the switching of the close detection switch SW1 from HIGH to LOW (SW1: H → L) is detected in Step S2, the controller C proceeds to Step S3 and resets its own open timer ( (Open timer = 0), the counting of the open timer is started, the flag H of the open timer is set (Open timer Start = H), and the process proceeds to step S4. On the other hand, when the switching of the close detection switch SW1 from HIGH to LOW cannot be detected in Step S2, the controller C proceeds from Step S2 to Step S4.

  In step S4, the controller C determines whether or not the open detection switch SW2 is switched from LOW to HIGH (SW2: L → H) and whether or not the open timer flag H is set. The switching of the open detection switch SW2 from LOW to HIGH corresponds to the state at the moment when the exhaust valve 70 opens the air passage 40 completely. At this time, the controller C proceeds to the next step S5 only when both conditions are satisfied, that is, only when the open timer flag H is set and the open detection switch SW2 is switched from LOW to HIGH. In other cases, the process proceeds to step S6.

  That is, in step S5, the count of the open timer is started from the moment when the exhaust valve 70 starts to open in step S2, and proceeds only when the moment when the exhaust valve 70 is completely opened is detected. In step S5, the controller C sets the time counted from the start to the present, that is, the accumulated time (Open timer) as the open time (OPEN TIME). Thus, the initial setting of the open time is completed, so the controller C lowers the open timer flag H (Open timer Start = L) and resets the open timer count (Open timer = 0). Then, the controller C proceeds to the next step S6.

  Next, in step S6, the controller C determines whether or not the open detection switch SW2 is switched from HIGH to LOW (SW2: H → L). When detecting that the open detection switch SW2 is switched from HIGH to LOW in Step S6, the controller C proceeds to Step S7, resets its own close timer (Close timer = 0), and counts the close timer. Is started and a close timer flag H is set (Close timer Start = H), and the process proceeds to step S8. On the other hand, if it is not detected in step S6 that the open detection switch SW2 has been switched from HIGH to LOW, the controller C proceeds from step S6 to step S8.

  In step S8, the controller C determines whether or not the closing detection switch SW1 is switched from LOW to HIGH (SW1: L → H) and whether or not the closing timer flag H is set. At this time, the controller C proceeds to the next step S9 only when both conditions are satisfied, that is, only when the close timer flag H is set and the close detection switch SW1 is switched from LOW to HIGH. In other cases, the process proceeds to step S10.

  In step S9, the controller C sets the time counted from the start of the count of the close timer to the present, that is, the accumulated time (Close timer) as the close time (CLOSE TIME), and sets the close timer flag. H is lowered (Close timer Start = L), and the count of the close timer is reset (Close timer = 0). Thereafter, the controller C proceeds to the next step S10.

  In step S10, the controller C determines whether or not the opening time and the closing time are greater than 0 (OPEN TIME> 0, CLOSE TIME> 0). If the opening time and the closing time are set, both values are larger than 0. In this case, the control device moves to step S11 and sets the flag H that has been initialized. When this initialized flag H is set, the initial setting operation is completed, and then the detailed opening time and closing time setting operation of the present invention is performed. If any time is 0 or less, the setting is not completed, so the controller C returns to step S1 again and repeats this operation until the flag H that has been initialized in step S11 is set. Do.

  Next, a detailed control operation for opening time and closing time will be described. The setting control operation is necessarily performed when the washing / drying by the washing / drying machine 1 is started, that is, before the above-described pre-operation before the washing operation is started. The controller C finely adjusts the opening time and the closing time by the setting operation based on the above-described initial setting values of the opening time and the closing time, and determines the optimum opening time and the closing time each time. The drive of the motor 76 of the exhaust valve 70 is controlled based on the opening time and the closing time. First, the closing time setting control operation will be described in detail with reference to the flowchart shown in FIG. In the present embodiment, the above-mentioned predetermined starting point is detected as a closing operation for detecting the switching of the opening detection switch SW2 from HIGH to LOW (that is, the state where the exhaust valve 70 passes through the opening position and is away from the opening position). At the beginning of

  First, in step S21, the controller C determines whether or not a close start flag (Close start) H described later is set. Since the close start flag H is not set in the initial operation, in this case, the controller C proceeds to step S51 and drives the exhaust valve motor 76. Next, the controller C proceeds to step S52 and determines whether or not a closeback flag H described later is set. In the first operation, since the close back flag (Close back) H is not set, in this case, the controller C proceeds to the next step S53, and whether or not the close failure flag (Close failure) H is set, Before the closing detection switch SW1 becomes HIGH, it is determined whether or not the opening detection switch SW2 is detected as HIGH (corresponding to SW2 = H shown in step S53).

  If any one of them is NO, the controller C proceeds to step S55 and determines whether or not the close check flag (Close check) H is set, and before the open detection switch SW2 becomes HIGH. It is determined whether or not HIGH of switch SW1 (corresponding to SW1 = H shown in step S55) is detected. In this case as well, if either one is not, the controller C moves to step S24, and determines whether or not the switching of the open detection switch SW2 from HIGH to LOW is detected (SW2 H → L). ). The switching of the open detection switch SW2 from HIGH to LOW is a state in which the exhaust valve 70 starts to close from the state where the air passage 40 is completely opened, that is, at the start of the above-described closing operation, and this closing time. This corresponds to a predetermined starting point in the setting.

  In this case, when the switch of the open detection switch SW2 from HIGH to LOW is not detected in step S24, the process returns to step S21, and the switch of the open detection switch SW2 from HIGH to LOW is detected in step S24. Until this is done, the controller C repeats the above-described operations of step S21 → step S51 → step S52 → step S53 → step S55 → step S24. In step S24, when the switching of the open detection switch SW2 from HIGH to LOW is detected, the controller C proceeds to the next step S25 and sets the above-described close start flag H. That is, the close start flag H is a flag that is set when it is detected that a predetermined starting point has been passed. In step S25, the close back flag and the close failure flag are also reset (Close back = L, Close failure = L).

  Furthermore, in step S25, the controller C starts counting of a close timer (Close timer) that it has, and returns to step S21. In step S21, since the close start flag H is in the standing state, the controller C moves to the next step 22, and the integration time of the count of the close timer reaches the close time (CLOSE TIME) set in the initial setting. Determine whether or not. In step S22, when the integration time of the count of the close timer has not reached the close time (CLOSE TIME) set in the initial setting (Close timer <CLOSE TIME), the controller C proceeds to step S23. The operation of driving the motor 76 (maintaining the driven state), proceeding to the step S24, returning to the step S21 and proceeding to the step S22 is the closing time (CLOSE TIME ) Will be repeated until it reaches.

  On the other hand, when the integration time of the count of the close timer reaches the close time (CLOSE TIME) in Step S22 (Close timer ≧ CLOSE TIME), the controller C proceeds to Step S30 and stops the exhaust valve motor 76. Thereby, the operation of the exhaust valve 70 is stopped.

  Further, the controller C starts counting a stop timer of the controller C simultaneously with the stop of the exhaust valve motor 76 in step S30 (Stop timer Start), and proceeds to step S31. In step S31, the controller C determines whether or not the closing detection switch SW1 is HIGH. In this case, if the opening 40A of the air passage 40 is closed by the exhaust valve 70 (if the exhaust valve 70 is in the closed position), the close detection switch SW1 becomes HIGH (that is, the close detection switch SW1 detects the close). doing). In step S31, if the close detection switch SW1 is HIGH, the controller C proceeds to step S32 and sets a close check flag H (Close check = H). The close check flag H is a flag for checking that the close detection switch SW1 is closed even once.

  Next, the controller C proceeds to step S33, and determines whether or not 10 seconds have elapsed since the start of the stop timer counting in step S30. Here, if 10 seconds have not elapsed, the controller C proceeds to step S24, returns to step S21, and again proceeds sequentially to step S22, step S30, and step S31.

  On the other hand, in step S31 (including the case where step S33 → step S24 → step S21 → step S22 → step S30 → step S31 is repeated as described above), when the close detection switch SW1 is not HIGH, that is, once closed. If the detection switch SW1 is HIGH but the controller C is not currently HIGH, including when the stop timer is counting (before 10 seconds elapses), the controller C is not currently HIGH. Then, the process proceeds to step S40, and it is determined whether or not the close check flag H is set. In step S30, when the stop timer is started and the process returns to step 30 again during the counting, the controller C does not start counting from 0 but continues counting continuously.

  In step S40, if the close detection switch SW1 is closed even once in step S31, the controller C proceeds to step S32 and sets the close check flag H. Therefore, in this step S40, the close check flag H is set. Standing. This is because once the motor 76 is stopped in step S30, the close detection switch SW1 detects HIGH (the exhaust valve 70 is closed), but becomes LOW until 10 seconds elapse ( Exhaust valve 70 has been opened). That is, it can be determined that the closing of the air passage 40 cannot be detected within a predetermined time (10 seconds) after the closing detection switch SW1 detects the closing of the air passage 40.

  As described above, when the close detection switch SW1 becomes HIGH and then becomes LOW within a predetermined time (10 seconds) (when the close check flag H is set), the controller C determines that the close has failed. Then, the process proceeds to step S41, and correction is performed to extend the closing time to the first extending time (here, +30 milliseconds (ms)) (CLOSE TIME + 30ms). Further, the controller C sets a close failure flag H in this step S41 (Close failure = H), resets the close start flag (Close Start = L), resets the stop timer, and then goes through step S24. Return to step S21.

  In step S21, since the close start flag is reset in step S41, the controller C shifts to step S51 to drive the motor 56, and then passes through step S52 (here, the close back flag is set). Therefore, the process proceeds to step S53. At this time, when the close failure flag H is set and the open detection switch SW2 detects HIGH (equivalent to SW2 = H shown in step S53) before the close detection switch SW1 becomes HIGH at this time. Is determined that the closing time is too long, the closing time is shortened by a predetermined time (here, 60 milliseconds (ms)) (CLOSE TIME -60 ms) in step S54, and the closing failure flag H is reset. (Close failure = L). Thereafter, the controller C proceeds to step S24 through step S55. When the controller C detects that the open detection switch SW2 is switched from HIGH to LOW in step S24, the controller C proceeds to step S25 as described above, and the close start flag H At the same time, the counting of the close timer that it has is started, and the control operation returning to step S21 is repeated. Since the operation after returning to step S21 is as described above, the description thereof is omitted here.

  On the other hand, in step S53, the close failure flag H is set, but before the close detection switch SW1 becomes HIGH, the open detection switch SW2 does not become HIGH (corresponding to SW2 = H shown in step S53). First, when the close detection switch SW1 becomes HIGH (corresponding to SW1 = H shown in step S55) and the close check flag H is set (Close check = H), the controller C performs step The process proceeds from S55 to step S56, and after the close back flag H is set (Close back = H), the process proceeds to step S24. In this case, the controller C repeats the operations of step S21 → step S51 → step S24 until it detects the switching of the open detection switch SW2 from HIGH to LOW in step S24.

  On the other hand, the case where the close check flag H is not set in step S40 is a case where the close detection switch SW1 has never been HIGH after the close detection switch SW1 has stopped the motor 76 in step S30. In this case, the controller C determines whether or not the count of the stop timer has passed 2 seconds in step S45. If it has not elapsed, the process returns to step S24, step S21 → step S22 → step S30 is sequentially performed, and it is determined again in step S31 whether or not the close detection switch SW1 is HIGH. The operation that proceeds to step S45 through step S40 is repeated.

  In step S45, when the count of the stop timer has elapsed for 2 seconds, the controller C determines that the closing time is too short, and in step S46, the closing time is longer than the first extension time. Correction for extending the time (here, +60 milliseconds (ms)) is performed (CLOSE TIME +60 ms). Further, the controller C sets the close back flag H and the close failure flag H (Close back = H, Close failure = H), resets the close start flag H and the stop timer (Close Start = L), and then performs step The process returns to step S21 via S24. Since the operation after returning to step S21 is as described above, it is omitted here.

  On the other hand, if it is determined in step S30 that the motor 76 is stopped and the stop timer starts counting and the closing detection switch SW1 remains HIGH and 10 seconds have elapsed in step S33, the controller C Determines that the closing time is accurate (successful closing), that is, by moving the motor 76 for the closing time determined from a predetermined starting point, the exhaust valve 70 is reliably positioned at the closed position, and the wind It is determined that the road 40 can be closed. In this case, the controller C proceeds from step S33 to step S34, sets the close completion flag H (Close complete), resets the close start flag in Step S35 (Close Start = L), and then performs the control operation. finish.

  Next, the opening time setting control operation will be described in detail based on the flowchart shown in FIG. In the present embodiment, the opening operation for detecting the above-described predetermined starting point from switching from HIGH to LOW of the closing detection switch SW1 (that is, the state in which the exhaust valve 70 passes through the closed position and is away from the closed position). At the beginning of

  First, in step S61, the controller C determines whether or not an open start flag (Open start) H described later is set. Since the open start flag H is not set in the initial operation, in this case, the controller C proceeds to step S91 and drives the exhaust valve motor 76. Next, the controller C proceeds to step S92 and determines whether or not an open back flag H described later is set. In the first operation, since the open back flag (Open back) H is not set, in this case, the controller C proceeds to the next step S93, and whether or not the open failure flag (Open failure) H is set. It is determined whether or not the close detection switch SW1 becomes HIGH (corresponding to SW1 = H shown in step S93) before the open detection switch SW2 becomes HIGH.

  If any one of them is NO, the controller C proceeds to step S95 to determine whether or not the open check flag (Open check) H is set and whether or not the open detection switch SW1 is HIGH. It is determined whether or not HGIH of switch SW2 (SW2 = H shown in step S95) has been detected. In this case as well, if either flag is not set, the controller C next moves to step S64 and determines whether or not the switch of the close detection switch SW1 from HIGH to LOW is detected (SW1). H → L). The switching of the close detection switch SW1 from HIGH to LOW is a state in which the exhaust valve 70 starts to open from the state where the air passage 40 is completely closed, that is, at the start of the opening operation described above, and this opening time. This corresponds to a predetermined starting point in the setting.

  In this case, if the switch of the close detection switch SW1 from HIGH to LOW is not detected in step S64, the process returns to step S61, and the switch of the close detection switch SW1 from HIGH to LOW is detected in step S64. Until this is done, the controller C repeats the above-described operations of Step S61 → Step S91 → Step S92 → Step S93 → Step S95 → Step S64. In step S64, when the switching of the close detection switch SW1 from HIGH to LOW is detected, the controller C proceeds to the next step S65 and sets the above-described open start flag H. That is, the open start flag H is a flag that is set when it is detected that a predetermined starting point has been passed. In step S65, the open back flag and the open failure flag are also reset (Open back = L, Open failure = L).

  Further, in step S65, the controller C starts counting the open timer that it has, and returns to step S61. In step S61, since the open start flag H is in a standing state, the controller C moves to the next step 62, and the accumulated time of the count of the open timer reaches the open time (OPEN TIME) set in the initial setting. Determine whether or not. In this step S62, when the integrated time of the open timer count has not reached the open time (OPEN TIME) set in the initial setting (Open timer <OPEN TIME), the controller C proceeds to step S63. The operation of driving the motor 76 (maintaining the driven state), proceeding to the step S64, returning to the step S61 and proceeding to the step S62, the accumulated time of the count of the open timer in the step S62 (OPEN TIME ) Will be repeated until it reaches.

  On the other hand, when the integrated time of the open timer reaches the open time (OPEN TIME) in step S62 (Open timer ≧ OPEN TIME), the controller C proceeds to step S70 and stops the exhaust valve motor 76. Thereby, the operation of the exhaust valve 70 is stopped.

  Further, the controller C starts counting the stop timer of the controller C at the same time as the stop of the exhaust valve motor 76 in step S70 (Stop timer Start), and proceeds to step S71. In step S71, the controller C determines whether or not the open detection switch SW2 is HIGH. In this case, if the exhaust valve 70 is in the open position, the open detection switch SW2 becomes HIGH (that is, the open detection switch SW2 detects opening). In step S71, when the open detection switch SW2 is HIGH, the controller C proceeds to step S72 and sets the open check flag H (Open check = H). The open check flag H is a flag for checking that the open detection switch SW2 is closed even once.

  Next, the controller C proceeds to step S73, and determines whether or not 10 seconds have elapsed since the start of the stop timer counting in step S70. If 10 seconds have not elapsed, the controller C proceeds to step S64, returns to step S61, and again proceeds sequentially to step S62, step S70, and step S71.

  On the other hand, in step S71 (including the case where step S73 → step S64 → step S61 → step S62 → step S70 → step S71 are repeated as described above), if the open detection switch SW2 is not HIGH, that is, once open. If the detection switch SW2 becomes HIGH, but the controller C is not currently HIGH, including the case where the stop timer is counting (before 10 seconds elapses), it goes from HIGH to LOW. Then, the process proceeds to step S80, and it is determined whether or not the open check flag H is set. In step S70, when the stop timer is started and the process returns to step 70 again during the counting, the controller C does not start counting from 0 but continues counting continuously.

  In step S80, if the open detection switch SW2 is closed even once in step S71, the controller C proceeds to step S72 and sets the open check flag H. In this step S80, the open check flag H is Standing. This is because, once the motor 76 is stopped in step S70, the open detection switch SW2 detects HIGH (the exhaust valve 70 is in the open position), but becomes LOW until 10 seconds elapses. This is a state where the exhaust valve 70 is displaced from the open position. That is, it can be determined that the opening of the air passage 40 cannot be detected within a predetermined time (10 seconds) after the open detection switch SW2 detects the closing of the air passage 40.

  Thus, if the open detection switch SW2 becomes HIGH and then becomes LOW within a predetermined time (10 seconds) (when the open check flag H is set), the controller C determines that the opening has failed. Then, the process proceeds to step S81, and correction for extending the closing time to the first extension time (here, +30 milliseconds (ms)) is performed (Open TIME + 30ms). Further, the controller C sets the open failure flag H (Open failure = H) in step S81, resets the open start flag (Open Start = L), resets the stop timer, and then goes through step S64. Return to S61.

  In step S61, since the open start flag is reset in step S81, the controller C shifts to step S91 to drive the motor 56, and passes through step S92 (here, the open back flag is set). Therefore, the process proceeds to step S93. At this time, when the open failure flag H is set and the open detection switch SW2 becomes HIGH before the open detection switch SW2 becomes HIGH, the controller C detects HIGH (corresponding to SW1 = H shown in step S93). Is determined that the open time is too long, the open time is shortened by a predetermined time (here, 60 milliseconds (ms)) (OPEN TIME -60 ms) in step S94, and the open failure flag H is reset. (Open failure = L). Thereafter, the controller C proceeds to step S64 via step S95. When the controller C detects that the close detection switch SW1 is switched from HIGH to LOW in step S64, the controller C proceeds to step S65 as described above, and the open start flag H At the same time, the counting of the open timer that it has is started, and the control operation returning to step S61 is repeated. Since the operation after returning to step S61 is as described above, the description thereof is omitted here.

  On the other hand, in step S93, the open failure flag H is set, but before the open detection switch SW2 becomes HIGH, the close detection switch SW1 does not become HIGH and the open detection switch SW2 becomes HIGH first. When the open check flag H is set (Open check = H), the controller C proceeds from step S95 to step S96, where the open back flag H is set (corresponding to SW2 = H shown in step S95). (Open back = H), the process proceeds to step S64. In this case, the controller C repeats the operations of step S61 → step S91 → step S64 until the switching of the close detection switch SW1 from HIGH to LOW is detected in step S64.

  On the other hand, the case where the close check flag H is not set in step S80 is a case where the open detection switch SW2 has never been HIGH after the motor 76 is stopped in step S70. In this case, the controller C determines whether or not the count of the stop timer has passed 2 seconds in step S85. If it has not elapsed, the process returns to step S64, and step S61 → step S62 → step S70 is sequentially performed. In step S71, it is determined again whether or not the open detection switch SW2 is HIGH. The operation proceeds to step S85 through step S80.

  In step S85, when the count of the stop timer has elapsed for 2 seconds, the controller C determines that the opening time is too short, and in step S86, sets the opening time to the first extended time (+30 milliseconds (ms). )) Correction is made to extend a second extension time longer (here, +60 milliseconds (ms)) (OPEN TIME +60 ms). Further, the controller C sets the open back flag H and the open failure flag H (Open back = H, Open failure = H), resets the open start flag H and the stop timer (Open Start = L), and then steps. After step S64, the process returns to step S61. Since the operation after returning to step S61 is as described above, the description is omitted here.

  On the other hand, if it is determined in step S70 that the motor 76 is stopped and the stop timer starts counting and the open detection switch SW2 remains HIGH and 10 seconds have elapsed in step S73, the controller C Determines that the opening time is accurate (successful closing), that is, by moving the motor 76 for the opening time determined from a predetermined starting point, the exhaust valve 70 is reliably positioned at the open position, and the wind It is determined that the road 40 can be opened. In this case, the controller C proceeds from step S73 to step S74, sets the open completion flag H (Open completion), resets the open start flag in step S75 (Open Start = L), and then performs the control operation. finish.

  As described above in detail, according to the present invention, when the controller C opens and closes the air passage 40 by the exhaust valve 70, the controller C operates the motor 76 for a predetermined opening time and closing time from a predetermined starting point. If it is determined that the opening or closing has failed due to the outputs of the detection switches SW1 and SW2 after the motor 76 is operated, the opening time or closing time is corrected and the motor is operated again. Thus, the air passage 40 can be reliably opened and closed.

  In particular, the controller C cannot detect the opening or closing of the air passage 40 within a predetermined time (10 seconds) after the opening detection switch SW2 or the closing detection switch SW1 detects the opening or closing of the air passage 40. Since it is determined that the opening or closing has failed, the opening / closing of the air passage 40 can be reliably detected. In this case, the open detection switch SW2 or the close detection switch SW1 cannot detect the opening or closing of the air passage 40, and after the motor 76 is operated again, the close detection switch SW1 or the open detection switch SW2 closes the air passage 40. Alternatively, when the open detection switch SW2 or the close detection switch SW1 detects the opening or closing of the air passage 40 again before the opening is detected, it is determined that the opening time or the closing time is insufficient, and the opening or closing time is determined. Is extended for the first extension time (30 milliseconds (ms)), so that once the open detection switch SW2 or the close detection switch SW1 detects the opening or closing of the air passage 40, the open detection switch SW2 or the close detection switch Even if the detection cannot be performed by returning the exhaust valve 70, that is, by returning the exhaust valve 70, the situation is confirmed. It is determined, it becomes possible to perform the correction to extend between opening time or closing.

  Further, the controller C cannot detect the opening or closing of the air passage 40 by the opening detection switch SW2 or the closing detection switch SW1, and after operating the motor 76 again, the opening detection switch SW2 or the closing detection switch SW1 is connected to the air passage 40. If the close detection switch SW1 or the open detection switch SW2 detects the closing or opening of the air passage 40 before detecting the opening or closing again, it is determined that the opening time or closing time is too long, and the opening or closing is performed. Since the time is shortened, after the open detection switch SW2 or the close detection switch SW1 detects the opening or closing of the air passage 40, the open detection switch SW2 or the close detection switch SW1 advances too much, and the detection cannot be performed. Even if it is a case, make sure to judge the situation and make corrections to shorten the opening time or closing time. It becomes possible.

  Furthermore, if the open detection switch SW or the close detection switch SW cannot detect the opening or closing of the air passage after the motor 76 is operated, the controller C determines that the opening time or the closing time is too short, and the opening time Or, since the closing time is extended to the second extension time (60 milliseconds (ms)) longer than the first extension time, the opening time is insufficient and the air passage is not fully open, or the closing time is insufficient Thus, it is possible to reliably determine the situation where the air passage is not completely closed, and perform correction for extending the opening time or the closing time. In particular, in this case, the opening time or the extension time of the closing time is set within a predetermined time (10 seconds) after the opening detection switch SW2 or the closing detection switch SW1 detects the opening or closing of the air passage 40. By making it longer than the extended time when opening or closing cannot be detected, an appropriate opening time or closing time can be set in a short time.

  In general, according to the present invention, the exhaust valve 70 is appropriately controlled by the controller C, so that the air passage 40 can be reliably opened and closed.

DESCRIPTION OF SYMBOLS 1 Washing dryer 2 Main body 3 Opening / closing door 4 Outlet 5 Outer tank 15 Drum 20 Through hole 30 Drum motor 40 Air passage 41 Valve chamber 42 First passage 43 Hose 44 Second passage 47 Filter 48 Exhaust chamber 48F Fan 49 Exhaust Cylinder 51 Water supply valve 56 Drain valve 60 Gas heating device 70 Exhaust valve 72 Motor chamber 76 Motor 77 Output shaft 78 Cam 78A First region 78B Second region 80 Link mechanism 81 First link portion 82 Second link portion 85 Stopper P Operation panel SW1 Close detection switch SW2 Open detection switch

Claims (6)

An outer tub that can store water, and is rotatably arranged in the outer tub, has a through hole in the peripheral wall, and stores and washes laundry inside, for rinsing, dehydration and drying. A drum, a drying air supply device for supplying drying air into the drum during the drying operation, and the outer tub communicated with each other, and during the drying operation, the outside from the drum through the through hole. An air passage for taking out the air that has flowed into the tank, an exhaust valve that opens the air passage during the drying operation and closes the air passage except during the drying operation, and drives the exhaust valve to open the air passage. In a washing and drying machine provided with a drive device that opens and closes,
The drive device includes a motor that rotates in one direction, a cam attached to an output shaft of the motor, the output shaft and the exhaust valve, and a link that operates the exhaust valve by rotation of the output shaft. A mechanism, an open detection switch and a close detection switch for detecting opening and closing of the air passage by the exhaust valve in contact with the cam, and control means for controlling the operation of the motor based on the output of each switch. And
The control means, when opening and closing the air passage by the exhaust valve, operates the motor for a predetermined opening time and closing time from a predetermined starting point and outputs the detection switches after the motor operation. Based on this, when it is determined that the opening or closing has failed, the opening time or closing time is corrected, and the motor is operated again.   The control means determines that opening or closing has failed when the opening detection switch or the closing detection switch cannot detect the opening or closing of the air passage within a predetermined time after detecting the opening or closing of the air passage. The washing / drying machine according to claim 1.   The control means is configured such that the open detection switch or the close detection switch cannot detect the opening or closing of the air passage, and after the motor is operated again, the close detection switch or the open detection switch closes or opens the air passage. If the opening detection switch or the closing detection switch detects the opening or closing of the air passage again before detecting the air flow, it is determined that the opening time or the closing time is insufficient, and the opening or closing time is extended. The washing / drying machine according to claim 2, wherein:   The control means is such that the open detection switch or the close detection switch cannot detect the opening or closing of the air passage, and after the motor is operated again, the open detection switch or the close detection switch is opened or closed. If the closing detection switch or the opening detection switch detects the closing or opening of the air passage before detecting again, it is determined that the opening time or closing time is too long, and the opening or closing time is shortened. The washing / drying machine according to claim 2.   When the opening detection switch or the closing detection switch cannot detect the opening or closing of the air passage after the motor is operated, the control means determines that the opening time or the closing time is too short, and the opening time or The washing and drying machine according to claim 1, wherein the closing time is extended. The control means, after the motor is operated, when the opening detection switch or the closing detection switch detects the opening or closing of the air passage, and the opening or closing of the air passage cannot be detected within a predetermined time. After determining that the opening or closing has failed and operating the motor again, before the closing detection switch or opening detection switch detects the closing or opening of the air passage, the opening detection switch or the closing detection switch is connected to the air passage. When opening or closing is detected again, it is determined that the opening time or closing time is insufficient, and the opening or closing time is extended by a first extension time,
After the motor is operated again, the close detection switch or the open detection switch detects the close or open of the air passage before the open or close detection switch detects the open or close of the air passage again. , Judging that the opening time or closing time is too long, and shortening the opening or closing time,
If the opening detection switch or the closing detection switch cannot detect the opening or closing of the air passage after the motor is operated, it is determined that the opening time or closing time is short, and the opening time or closing time is set to the first time. The washing / drying machine according to claim 1, wherein the washing / drying machine is extended for a second extension time longer than the extension time.

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