JP4996202B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a washing and drying machine including an exhaust port that can discharge air in a water receiving tank during a drying operation, and a lid that opens and closes the exhaust port.

2. Description of the Related Art Conventionally, a washing and drying machine having a drying function includes a blower fan and a heater in a circulation air passage communicating with a water receiving tank, and circulates and supplies hot air into the water receiving tank during a drying operation. .
In this type of washing and drying machine, in order to improve drying efficiency, there is provided an exhaust port that can discharge the air in the water receiving tank to the outside during a drying operation, and a lid that opens and closes the exhaust port. It is considered. The lid is opened and closed based on a signal given from the control device. In the drying operation, the lid is closed when the amount of moisture evaporated from the laundry is small, and is opened when the amount of moisture evaporated from the laundry is large. (For example, refer to Patent Document 1).
JP 2006-204708 A

  According to the above-described conventional washing dryer, the drying operation according to the amount of moisture evaporated from the laundry and the drying state of the laundry is performed by appropriately switching the open / close state of the cover of the exhaust port during the drying operation. It can be performed and an efficient drying operation can be expected.

  However, the above control device only gives a signal to the exhaust cover, and cannot determine whether the exhaust cover actually opened or closed based on the given signal. For this reason, the cover of the exhaust port remains open despite the small amount of water evaporated from the laundry, or the cover of the exhaust port closes despite the large amount of water evaporated from the laundry. There is a possibility that it will be in a state of being left. That is, since the actual opening / closing state of the cover of the exhaust port cannot be grasped, there arises a problem that improvement of the original drying efficiency cannot be expected.

  In order to solve the above problems, an object of the present invention is to provide a washing / drying machine that can reliably grasp the open / closed state of the cover of the exhaust port and can reliably improve the drying efficiency. .

To achieve the above object, the washing and drying machine of the present invention, the water-receiving tub for rotatably supporting the drum inside, and warm air supply means for supplying hot air into the water-receiving tub during the drying operation, the An exhaust port that is connected to the water receiving tank without passing through a circulation air passage that communicates with the inside of the water receiving tank, discharges the air in the water receiving tank to the outside during a drying operation, an open position that opens the exhaust port, and A lid that is rotatably provided between a closed position that closes the exhaust port, and a stepping that is connected to the lid and rotates the lid between the open position and the closed position by being driven by a predetermined amount. And a detection means for detecting an opening / closing position of the lid when the stepping motor is driven by a predetermined amount, and the lid opens the exhaust port at a finishing stage of the drying operation. (Invention of Claim 1).

  According to the above means, when the stepping motor is driven by a predetermined amount, the lid in the closed position rotates to the open position, and the lid in the open position rotates to the closed position. The detecting means detects the opening / closing position of the lid when the stepping motor is driven by a predetermined amount. Based on this detection result, it is possible to reliably grasp the open / closed state of the exhaust cover, and to perform a drying operation according to the actual open / closed state of the exhaust cover. Can be improved.

(First embodiment)
Hereinafter, a first embodiment of a washing and drying machine of the present invention will be described with reference to FIGS. 1 to 8. FIG. 1 is a longitudinal side view schematically showing the configuration of the washing / drying machine 1. A through-hole-shaped laundry entrance 4 is formed in the front plate 3 of the outer box 2 that forms the outline of the laundry dryer 1, and the laundry entrance 4 has a door that opens and closes the laundry entrance 4. 5 is provided.
Inside the outer box 2, a bottomed cylindrical water receiving tank 6 whose rear surface is closed is elastically supported by a suspension 7 in a state where it is inclined forwardly. A circular opening 8 facing the laundry entrance / exit 4 is formed on the front surface of the water receiving tub 6. The opening 8 is formed by a bellows 9 made of a rubber material and having a cylindrical shape. It is connected with the periphery of.

  A drive motor 10 is provided on the rear surface of the water receiving tank 6 for rotationally driving a drum 12 described later. This drive motor 10 is an outer rotor type DC brushless motor comprising a stator (not shown) fixed to the rear surface of the water receiving tank 6 and a rotor (not shown) rotatably arranged on the outer periphery of the stator. Yes, speed control is possible. The rotating shaft 11 fixed to the rotor side of the drive motor 10 protrudes into the water receiving tank 6, and a bottomed cylindrical drum 12 whose rear surface is closed is fixed to the tip of the rotating shaft 11. The drum 12 is formed with a plurality of through holes 13 that function as vent holes and water holes. Further, a circular opening 14 facing the laundry entrance 4 is formed on the front surface of the drum 12. The drum 12 is supported by a bearing so as to be rotatable inside the water receiving tank 6 when the drive motor 10 is driven.

  A water supply valve 15 connected to a water tap (not shown) is provided above the rear end side of the water receiving tank 6. The water supply valve 15 includes two water outlet ports 15a and 15b, and one of the water outlet ports 15a is connected to the inside of the water receiving tank 6 through a detergent case 16 into which a detergent can be poured. When the water supply valve 15 is opened, water is injected into the water receiving tank 6 through the water supply valve 15 and the detergent case 16 in this order from the tap. The other water outlet port 15b of the water supply valve 15 is connected in communication with a sprinkler 26 described later.

  A drain hose 18 is provided below the rear end side of the water receiving tank 6 with a drain valve 17 interposed therebetween. The drain valve 17 is switched between an open state and a closed state. When the drain valve 17 is switched to the closed state, the water from the water supply valve 15 can be stored in the water receiving tank 6, and when the drain valve 17 is switched to the open state, the water receiving tank 6 passes through the drain hose 18. The internal water can be discharged.

  A duct-shaped heat exchanger 19 is provided at the rear part of the water receiving tank 6, and a fan case 20 and a heater case 21 are provided at the upper part of the water receiving tank 6. And the lower end part of the heat exchanger 19 is connected in communication with the lower part of the rear surface of the water receiving tank 6. On the other hand, the upper end portion of the heat exchanger 19 is connected to the rear end side of the fan case 20. The front end side of the fan case 20 is connected in communication with the rear end side of the heater case 21. The front end side of the heater case 21 is connected to the upper front portion of the water receiving tank 6 through an air supply duct 22. As a result, a circulation air passage 23 communicating with the inside of the water receiving tank 6 through the heat exchanger 19, the fan case 20 and the heater case 21 is configured.

  A fan blower 24 that can be rotated by a fan motor (not shown) is provided inside the fan case 20, and the air inside the water receiving tank 6 circulates through the circulation air passage 23 by rotating the blower fan 24. To do. At this time, the air circulating in the circulation air passage 23 is heated by the heater 25 inside the heater case 21 and supplied as hot air into the water receiving tank 6. The warm air supplied into the water receiving tank 6 evaporates the moisture of the laundry in the drum 12 and flows into the heat exchanger 19 together with the generated water vapor. Thus, the blower fan 24 and the heater 25 function as hot air supply means, and can be operated by switching each output between “strong” and “weak” as will be described later.

  Inside the upper end side of the heat exchanger 19, a sprinkler 26 is provided, and this sprinkler 26 is connected to the other water outlet port 15 b of the water supply valve 15 via a water injection hose 27. Accordingly, when the other water outlet port 15b of the water supply valve 15 is opened, water from the water tap is sprinkled from the water sprinkler 26 into the heat exchanger 19, and the air inside the heat exchanger 19 is cooled to the air. The contained water vapor is condensed and removed. As a result, the air circulating inside the circulation air passage 23 is dehumidified.

An exhaust port unit 28 is provided at an upper portion on the rear end side of the outer box 2, and the exhaust port unit 28 is connected to an exhaust hole 30 at the upper rear portion of the water receiving tank 6 through an exhaust pipe 29. . Here, the configuration of the exhaust port unit 28 will be described with reference to FIGS.
2 is a side view showing the appearance of the exhaust port unit 28, FIG. 3 is a vertical side view, and FIG. 4 is a vertical side view in a different state. The exhaust port unit 28 is formed in a horizontally long shape as a whole, and is arranged so that the longitudinal direction of the exhaust port unit 28 (the left-right direction in FIGS. 2 to 4) is along the left-right direction of the washing / drying machine 1. ing.

  The exhaust port unit 28 is provided with an open part 31 and a detection mechanism part 32. The open part 31 is formed in a box shape with the top opened, and the bottom part 31a is inclined downward toward the detection mechanism part 32 as shown in FIGS. An exhaust port 33 that is opened in a cylindrical shape is provided at the end portion on the detection mechanism unit 32 side of the bottom 31 a of the open portion 31, and the exhaust port 33 is connected to the exhaust pipe 29 described above. An upper portion of the exhaust port 33 is connected to a rotation shaft 34a and is integrally connected to the rotation shaft 34a. The rotation shaft 34a is rotatable about the rotation shaft 34a in the directions of arrows A1 and A2 in FIGS. An exhaust damper 34 (corresponding to a lid) is provided.

  The detection mechanism part 32 is integrally provided on one side wall 31 b of the opening part 31. A stepping motor 35 is attached to one side (back side in FIG. 2) of the detection mechanism unit 32, and a cam 36 is attached to the other side (front side) of the detection mechanism unit 32. A rotating shaft (not shown) of the stepping motor 35 is connected to a driven shaft 35a that is driven via a gear mechanism. The cam 36 is fixed to the tip of the driven shaft 35a of the stepping motor 35, and can be rotated in the direction of arrow B1 in FIG. 2 when the stepping motor 35 is driven. Further, a micro switch 37 (corresponding to detection means) is attached to a position adjacent to the cam 36 on the other side of the detection mechanism portion 32. The micro switch 37 outputs an ON signal to a control device (not shown), which will be described later, when the button 37a is pressed and turned on.

  Further, a specific configuration of the exhaust port unit 28 on the detection mechanism unit 32 side will be described with reference to FIG. 5A shows the detection mechanism 32 in a state where the exhaust damper 34 is in the closed position, and FIG. 5B shows the exhaust damper 34 in the middle position (between the open position and the closed position). FIG. 5C shows the detection mechanism 32 in a state where the exhaust damper 34 is in the open position.

  A large diameter portion 38 is provided on the half circumference side of the cam 36 described above, and a small diameter portion 39 is provided on the remaining half circumference side. Therefore, the cam 36 has two types of diameters, large and small. One end portion of the first connecting member 40 is connected to the large-diameter portion 38 of the cam 36 so as to be rotatable about a rotating shaft 41, and is connected to the other end portion of the first connecting member 40. The one end of the second connecting member 42 is connected so as to be rotatable about a rotating shaft 43. The rotating shaft 34a of the exhaust damper 34 is integrally connected and fixed to the other end of the second connecting member 42. When the cam 36 is rotated in the direction of arrow B1 in FIG. 5 by the stepping motor 35, the exhaust damper 34 rotates the rotating shaft 34a via the first connecting member 40 and the second connecting member 42, and the exhaust is discharged. It rotates between an open position (see FIG. 3) for opening the opening 33 and a closed position (see FIG. 4) for closing the exhaust opening 33.

  Accordingly, when the exhaust damper 34 is moved to the closed position, as shown in FIG. 5A, the button 37a of the micro switch 37 is pressed by the large diameter portion 38 of the cam 36, and the micro switch 37 is turned on. . From this state, when the cam 36 is rotated in the direction of the arrow B1 in FIG. 5A by the stepping motor 35, the button 37a of the micro switch 37 is pressed by the large diameter portion 38 of the cam 36 as shown in FIG. Therefore, the micro switch 37 maintains the ON state. In this state, the exhaust damper 34 is moved from the closed position as the cam 36 rotates in the direction of arrow B1 in FIG. 5B and the second connecting member 42 rotates in the direction of arrow B2 in FIG. It gradually rotates in the direction of arrow A1 in FIG. 4 toward the open position. When the cam 36 further rotates in the direction of the arrow B1 in FIG. 5B and the small diameter portion 39 reaches a position facing the button 37a of the micro switch 37, the large diameter is obtained as shown in FIG. The pressing of the button 37a by the part 38 is released, and the microswitch 37 is turned off. In this state, the second connecting member 42 rotates to the maximum in the direction of arrow B2 in FIG. 5, and therefore the exhaust damper 34 has moved to the open position as shown in FIG.

  On the other hand, in the heat exchanger 19 constituting the circulation air passage 23 shown in FIG. 1, an intake port 23 a that communicates the inside and the outside of the heat exchanger 19 is provided at a position higher than the sprinkler 26. When the blower fan 24 is rotated with the exhaust damper 34 being rotated to the open position, the air inside the water receiving tank 6 is discharged to the outside through the exhaust pipe 29 from the exhaust port 33. External air is sucked into the heat exchanger 19 from the air inlet 23a.

  As shown in FIG. 1, a water level sensor 45 for detecting and controlling a water supply amount (water level) is connected to the lower portion of the water receiving tank 6 via an air tube 44. Further, a circulation water channel 48 with a filter case 46 and a circulation pump 47 interposed is provided outside the water receiving tank 6 so that the washing water can be circulated during the washing operation and the rinsing operation.

  A horizontally long rectangular operation panel 49 is provided at the upper end portion of the front plate 3 of the outer box 2, and the operation panel 49 includes a plurality of switch buttons such as a power button, a start button, and a driving course selection button. 50 is provided. The operation signals from the plurality of switch buttons 50 are input to a control device including a ROM, a RAM and the like mainly using a microcomputer. The control device is connected to the stepping motor 35 and the microswitch 37 described above, and rotates the exhaust damper 34 between an open position and a closed position in accordance with a previously stored control program. In addition to the drive motor 10, the water supply valve 15, the drain valve 17, the blower fan 24, the heater 25, the microswitch 37, the water level sensor 45, and the like, the control device includes a fan motor and a temperature sensor (not shown). To control the overall operation of the washing / drying machine 1.

Next, the operation of the above configuration will be described with reference to FIGS.
FIG. 6 is a flowchart showing the contents of initialization processing performed by the control device after power-on, and will be described first with reference to FIG. When the power button on the operation panel 49 is pressed and the washing dryer 1 is turned on, the control device starts an initialization process and monitors whether or not the start button is operated (step S1). In this case, if the operation course button on the operation panel 49 is set after the power is turned on, the control device stores and sets the selected operation course as an operation course to be executed thereafter. When the start button is operated (“YES”), the control device rotates the stepping motor 35 by a minute angle (at least an angle that crosses the boundary between the large diameter portion 38 and the small diameter portion 39) (step S2). 5), it is determined whether or not the state of the microswitch 37 shown in FIG. 5 has been switched (step S3).

  When the state of the micro switch 37 is switched (“YES”), the control device determines whether or not the exhaust damper 34 is in the closed position (step S4). At this time, if the micro switch 37 is switched from the ON state to the OFF state in step S3, the control device determines that the exhaust damper 34 is in the closed position, and ends the initialization process (step S5). On the other hand, when the micro switch 37 is switched from the OFF state to the ON state in step S3, the control device determines that the exhaust damper 34 is in the open position, and drives the stepping motor 35 to close the exhaust damper 34. When the micro switch 37 is turned on, the initialization process is terminated (step S6).

  If the state of the micro switch 37 is not switched in the above-described step S3 (“NO”), the control device determines that the exhaust damper 34 is in the middle position and drives the stepping motor 35 to exhaust the exhaust damper 34. Is rotated to the closed position (step S7). When the stepping motor 35 is driven, the cam 36 rotates in the direction of the arrow B1 in FIG. 5, and the large diameter portion 38 eventually presses the button 37a of the micro switch 37 so that the micro switch 37 is turned on. The control device determines whether or not the micro switch 37 is turned on as the cam 36 rotates (step S8).

  When the microswitch 37 is turned on, the control device determines that the exhaust damper 34 has moved to the closed position, and ends the initialization process (step S9). On the other hand, if the micro switch 37 is not turned on even if the cam 36 is rotated at least half a turn in step S8, the control device determines that the exhaust damper 34 remains in the middle position and is abnormal. A detection process is executed (step S10).

Next, the contents of the abnormality detection process will be described with reference to the flowchart of FIG.
When the control device starts the abnormality detection process, it drives the stepping motor 35 by a minute angle to check the state of the exhaust damper 34 (whether the exhaust damper 34 is in the closed position, or in the open position or in the middle position). (Step S11). Subsequently, the control device determines whether or not the confirmed state of the exhaust damper 34 is a normal state (for example, the closed position when the power is turned on) according to the control program described above (step S12).

  When the state of the exhaust damper 34 is normal (“YES”), the control device executes a drying process (see FIG. 8) for opening and closing the exhaust damper 34 in the latter half of the operation course to be executed thereafter (step 8). S13). The contents of this drying process will be described later. On the other hand, when the state of the exhaust damper 34 is not normal (“NO”), the control device determines whether or not the state of the exhaust damper 34 confirmed in step S11 is the closed position (step S14).

  When the state of the exhaust damper 34 is the closed position (“YES”), the control device determines that the exhaust damper 34 remains in the closed position and does not rotate, and in the operation course to be executed thereafter. The drying process time (for example, the warm air drying time shown in FIG. 8) is set longer (step S15). On the other hand, when the state of the exhaust damper 34 is not in the closed position (“NO”), the control device determines that the exhaust damper 34 is in the open position or the intermediate position and does not rotate. While notifying the error via the error display section, the drying process in the operation course to be executed thereafter is stopped (step S16).

Next, the operation content of the entire drying process will be described with reference to the time chart of FIG.
In the drying process, the control device first performs hot air drying for supplying warm air into the water receiving tank 6. This warm air drying is performed with the exhaust damper 34 turned to the closed position and the exhaust port 33 closed. In the initial stage of hot air drying (hereinafter referred to as “a”), the control device heats the heater 25 with a strong output and rotates the blower fan 24 in a low wind to heat the inside of the water receiving tank 6. As a result, the air circulating inside the circulation air passage 23 is heated, so that the temperature of the air supplied to the water receiving tank 6, the temperature of the inlet of the heat exchanger 19, and the outlet of the heat exchanger 19 are shown in the figure. The temperature of each increases rapidly. In addition, the control device opens the drain valve 17 throughout the entire process including the warm air drying.

  When the heating of the inside of the water receiving tank 6 in the initial stage a is completed, the control device rotates the blower fan 24 with a strong wind and sprays water into the heat exchanger 19 by the water sprayer 26. Further, the control device continues to generate heat by the heater 25 with a strong output. In this state, the temperature of the air supplied to the water receiving tub 6 is maintained at a high temperature, whereby the laundry in the drum 12 is actively dried. At this time, since the warm air after contributing to drying flows from the water receiving tank 6 into the circulation air passage 23, the temperature of the inlet of the heat exchanger 19 changes at a relatively high temperature. Further, since the air flowing into the circulation air passage 23 is dehumidified and cooled in the heat exchanger 19, the temperature of the outlet of the heat exchanger 19 changes at a low temperature. Water or dehumidified water sprayed into the heat exchanger 19 in this hot air drying is drained to the outside through the open drain valve 17 from the bottom of the heat exchanger 19.

  At the end of the hot air drying, the control device causes the heater 25 to generate heat with a weak output and causes the blower fan 24 to rotate with a weak wind. As a result, the temperature of the hot air flowing into the circulation air passage 23 is lowered and the amount of the air is also reduced, so that the temperature at the inlet of the heat exchanger 19 is rapidly lowered.

When the hot air drying is finished, the control device shifts to finish drying. In this finish drying, the control device stops the heat generation of the heater 25 and rotates the blower fan 24 with a strong wind. The control device also opens the exhaust port 33 by rotating the exhaust damper 34 to the open position. In this state, warm and humid air inside the water receiving tank 6 is exhausted to the outside from the exhaust port 33, and dry air outside the water receiving tank 6 flows into the water receiving tank 6 from the intake port 23 a of the heat exchanger 19. To do. Further, since the air that has flowed into the water receiving tank 6 circulates in the circulation air passage 23, the residual heat of the heater 25 is released. Furthermore, the temperature of the air supplied to the water receiving tank 6 gradually decreases in combination with the cooling action by watering from the water sprinkler 26.
At the final stage of the finish drying, the control device rotates the blower fan 24 in a weak wind, finally stops watering the heat exchanger 19 and ends the drying operation.

As described above, according to the present embodiment, the following effects can be obtained.
When the stepping motor 35 is driven by a predetermined amount, the exhaust damper 34 in the closed position rotates to the open position, and the exhaust damper 34 in the open position rotates to the closed position. The microswitch 37 detects the open / close position of the exhaust damper 34 when the stepping motor 35 is driven by a predetermined amount. Based on the detection result, the open / closed state of the exhaust damper 34 can be reliably grasped, and the drying process (drying operation) can be performed in accordance with the actual open / closed state of the exhaust damper 34. It can certainly improve.

  In addition, the contents of the drying process can be changed based on the detection result of the microswitch 37. Thereby, for example, when it is determined from the detection result of the micro switch 37 that the exhaust damper 34 is in a closed state, the drying time is increased by the amount that water vapor cannot be discharged from the laundry. Can act. On the other hand, when it is determined that the exhaust damper 34 remains open, the drying process can be stopped in order to prevent adverse effects due to the discharge of water vapor from the laundry.

  Further, when it is detected that the exhaust damper 34 is in the open position or halfway between the open position and the closed position after the power is turned on, the exhaust damper 34 is rotated to the closed position. In the initial stage a of the warm air drying process, it is necessary to close the exhaust damper 34 in order to increase the temperature in the water receiving tank 6. However, the exhaust damper 34 is in the open position or between the open position and the closed position. Even if it is in the middle position, the exhaust port 33 can be reliably closed.

(Second Embodiment)
FIG. 9 is a view corresponding to FIG. 6 showing the second embodiment of the washing / drying machine of the present invention. This second embodiment differs from the first embodiment described above in the method and content of the initialization process. . Hereinafter, the same portions as those in the first embodiment described above are denoted by the same reference numerals, description thereof will be omitted, and only different portions will be described.

  In the second embodiment, when the exhaust damper 34 rotates to the closed position and the micro switch 37 is turned on, the control device stores the open / close state of the exhaust damper 34 in the ROM as the closed state, and the exhaust damper 34. Is rotated to the open position and the micro switch 37 is turned off, the open / close state of the exhaust damper 34 is stored in the ROM as the open position. Further, the control device can grasp the rotation position (rotation amount) of the exhaust damper 34 based on the drive amount of the stepping motor 35 from the state where the exhaust damper 34 is rotated to the open position and the closed position. When the exhaust damper 34 rotates to an intermediate position between the open position and the closed position (a position where the open / close amount of the exhaust damper 34 is 50%), the open / close state of the exhaust damper 34 is stored in the ROM as an intermediate state.

Next, the effect | action of 2nd Embodiment is demonstrated based on FIG.
FIG. 9 is a flowchart showing the contents of the initialization process performed by the control device after power-on as described above. When the power button on the operation panel 49 is pressed and the washing dryer 1 is turned on, the control device starts an initialization process and monitors whether or not the start button has been operated (step S21). When the start button is operated, the control device reads the open / close state of the exhaust damper 34 stored in the ROM (step S22), and determines whether or not the read open / close state of the exhaust damper 34 is closed. Judgment is made (step S23).

  When the open / close state of the exhaust damper 34 is closed (“YES”), the control device determines whether or not the exhaust damper 34 is in the closed position by driving the stepping motor 35 by a minute angle. (Step S24). If the exhaust damper 34 is in the closed position (“YES”), the control device ends the initialization process (step S25). On the other hand, when the exhaust damper 34 is not in the closed position (“NO”), the control device drives the stepping motor 35 to rotate the exhaust damper 34 to the closed position (step S26). The control device determines whether or not the micro switch 37 is turned on as the cam 36 rotates (step S27). When the micro switch 37 is turned on, the initialization process is terminated (step S28). . On the other hand, in step S27, if the micro switch 37 is not turned on even if the cam 36 is rotated at least half a turn, the control device determines that the exhaust damper 34 is not normally rotated, and executes it thereafter. The drying process in the operation course is stopped (step S29).

  In step S23 described above, when the open / close state of the exhaust damper 34 is not closed (“NO”), the control device determines whether the read / open state of the exhaust damper 34 is open (step). S30). When the open / close state of the exhaust damper 34 is the open state (“YES”), the control device executes the processes of steps S26, S27, S28, and S29 described above. On the other hand, when the open / close state of the exhaust damper 34 is not in the open state (“NO”), the control device determines whether the read / open state of the exhaust damper 34 is an intermediate state (step S31).

  When the open / close state of the exhaust damper 34 is an intermediate state (“YES”), the control device executes the processes of steps S26, S27, S28, and S29 described above. On the other hand, when the open / close state of the exhaust damper 34 is not halfway (“NO”), the control device determines that the open / close state of the exhaust damper 34 is not normally stored in the ROM, and drives the stepping motor 35. Then, the exhaust damper 34 is turned to the closed position (step S32), and the processes of steps S27, S28, and S29 described above are executed.

  As described above, according to the second embodiment, the open / closed state of the exhaust damper 34 is stored in the ROM, so that the open / closed state of the exhaust damper 34 can be reliably grasped, and the drying efficiency is reliably ensured. Can be improved.

(Other embodiments)
In addition, this invention is not limited to each embodiment mentioned above, It can deform | transform or expand | deploy as follows.
In step S16 in FIG. 7, the entire driving course to be executed thereafter may be stopped.
The position where the air inlet 23a is provided is not limited to a position higher than the water sprinkler 26 in the heat exchanger 19, but a position where air outside the water receiving tank 6 can be sucked when the exhaust damper 34 is rotated to the open position. If so, it can be appropriately changed.

The direction in which the cam 36 rotates is not limited to the direction of the arrow B1 in FIGS. 2 and 5, but may rotate in the direction opposite to the B1 direction, or may rotate in both the B1 direction and the opposite direction. You may do it.
In addition, the washing and drying machine of the present invention can be implemented with various modifications without departing from the gist of the present invention.

1 is a longitudinal side view of a washing / drying machine showing a first embodiment of the present invention. Side view showing the appearance of the exhaust port unit Longitudinal side view showing the exhaust port unit with the exhaust damper rotated to the open position Longitudinal side view showing the exhaust port unit with the exhaust damper rotated to the closed position The figure which shows the different operation state (a), (b), (c) of a detection mechanism part. Flow chart showing the contents of initialization processing Flow chart showing details of abnormality detection processing Time chart for explaining the operation of the drying process FIG. 6 equivalent view showing the second embodiment of the present invention

Explanation of symbols

  In the drawings, 1 is a washing / drying machine, 6 is a water receiving tank, 12 is a drum, 24 is a blower fan (hot air supply means), 25 is a heater (hot air supply means), 33 is an exhaust port, and 34 is an exhaust damper (lid). ) And 35 are stepping motors, and 37 is a microswitch (detecting means).

Claims (3)

A water receiving tank that rotatably supports the drum inside,
Hot air supply means for supplying hot air into the water receiving tank during drying operation;
An exhaust port that is connected to the water receiving tank without a circulation air passage communicating with the inside of the water receiving tank, and discharges the air in the water receiving tank to the outside during a drying operation;
A lid provided to be rotatable between an open position for opening the exhaust port and a closed position for closing the exhaust port;
A stepping motor connected to the lid and rotating the lid between the open position and the closed position by driving a predetermined amount;
Detecting means for detecting the open / close position of the lid when the stepping motor is driven by a predetermined amount;
The washing / drying machine, wherein the lid opens the exhaust port at a finishing stage of the drying operation.   The washing / drying machine according to claim 1, wherein the content of the drying operation can be changed based on a detection result of the detection means. The lid open / closed state is determined based on whether or not the state of the detection means is switched when the stepping motor is rotated by a minute angle after the power is turned on, and the detection means has the exhaust cover at the open position. The washing / drying machine according to claim 1, wherein the exhaust lid is rotated to the closed position when it is detected that the position is halfway between the open position and the closed position.

Images