JP2015051178A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing and drying machine in which fastening of a valve body provided in an air passage can be repaired easily.SOLUTION: A washing and drying machine includes: a water tub 1; a rotary tub 4 provided in the water tub 1 in a rotatable manner; a rotary tub driving motor 10 for rotationally driving the rotary tub 4; a circulation air passage 24 for introducing drying air into the rotary tub 4; blower means 26 for blowing air to the circulation air passage 24; a valve body 29 for opening/closing the circulation air passage 24 by rotation; a valve driving motor 30 for driving the valve body 29; and a shaft 31 for connecting the valve body 29 and the valve driving motor 30. The shaft 31 has a projection part 31a on the outside of the circulation air passage 24.

Description

  The present invention relates to a washing / drying machine for washing and drying clothes and the like.

  Conventionally, this type of laundry dryer is capable of washing laundry such as clothes in a rotating tub, washing composed of a series of steps of rinsing and dehydration, and drying the washed laundry continuously. And a circulation air passage for circulating hot air for drying is configured.

  In the drying step, the warm air that has been dried is blown into the rotating tub from the circulation air passage by the air blowing means, and the clothes in the rotating tub are brought into contact with the warm air to dry the clothes. In the washing process, water and detergent are supplied into the water tank by means of water supply, the clothes are lifted in the rotational direction by rotating the rotating tank, and the washing is repeated for a predetermined time by dropping from above the rotating tank. Washing. A configuration is considered in which a rotatable valve body is provided so that washing water foamed during the washing process does not reach the blowing means, and the circulation air passage is closed during the washing process and opened during the drying process. . (For example, refer to Patent Document 1).

  FIG. 9 shows a configuration of a conventional washing / drying machine described in Patent Document 1. As shown in FIG. In FIG. 9, a water tank 52 is elastically supported in a casing 51, and a substantially cylindrical rotating tank 53 is rotatably provided in the water tank 52. The rotating tank 53 is rotationally driven by a motor 54 attached to the outside of the rear surface of the water tank 52. A large number of holes 55 are provided in the peripheral side surface of the rotating tub 53 to communicate with the water tank 52. The rotating tub 53 functions as a laundry room during washing and functions as a drying room during drying.

  A blower 56 is disposed in the upper part of the housing 51 and blows air into the rotary tank 53 through the circulation air passage 57 during the drying operation. Further, in the circulation air passage 57, a dehumidifying means 60 for dehumidifying the drying air, a heating means 61 for heating the dehumidified drying air, and a drying filter 62 for capturing lint generated from clothes and the like during the drying operation. Are arranged on the windward side of the blowing means 56.

  The circulation air passage 57 has an exhaust port 58 provided above the water tank 52, a blower port 59 provided at the rear of the rotary tank, and a valve body 63 that opens and closes the circulation air passage 57. During the drying process, the valve body 63 is positioned on the air path opening side, but by closing the air path with the valve body 63 during the washing process, bubbles generated in the washing process do not enter the blowing means 56, the heating means 61, and the like. I am doing so.

  10 and 11 show a specific configuration of a valve body provided in a conventional air passage. The circulation air passage 57 has a first air passage 64, a second air passage 65, and a switching means 66 that selectively switches between the first air passage 64 and the second air passage 65. The switching means 66 includes a valve body 63 that is rotatably supported and a valve drive motor 67 that is attached to the circulation air passage 57 and rotates the valve body 63. By configuring the valve drive motor 67 outside the circulation air passage 57, the valve drive motor 67 can be easily attached and detached, and the workability when assembling the switching means 66 and replacing the valve drive motor 67 is improved (for example, , See Patent Document 2).

JP 2008-253589 A JP 9-313789 A

  However, when a large amount of foam is generated at the time of washing and the foam has entered from the blower opening 59 to the valve body 63, the detergent component remains in the gap between the valve body 63 and the inner wall of the air passage 57, so that the valve is not used for a long time. When the body 63 is not operated, the detergent component is hardened, the valve body 63 and the inner wall of the air passage 57 are fixed, and the valve body 63 may cause a rotation failure. When the valve body 63 malfunctions, for example, when the valve body 63 is fixed in the closed state of the air passage 57, air is not blown into the rotating tub, resulting in poor drying performance.

  In the conventional configuration, in order to repair the sticking of the valve body, the motor must be removed, the work becomes complicated, and the control of the coaxiality of the rotation shaft of the motor and the valve body cannot be performed. There is a problem that the driving torque of the valve body increases and the malfunction of the valve body occurs again.

  An object of the present invention is to solve the conventional problems described above, and to provide a washing and drying machine that can easily repair the sticking of the valve body.

  In order to solve the above-described conventional problems, a washing machine of the present invention includes a water tub, a rotating tub provided rotatably in the water tub, a rotating tub drive motor that rotationally drives the rotating tub, and a drying tub in the rotating tub. Circulating air path for introducing air, air blowing means for blowing air to the circulating air path, valve body for opening and closing the circulating air path by rotating, valve driving motor for driving the valve body, valve body and valve driving motor The shaft is provided with a protrusion on the outside of the circulation air passage.

  As a result, even if the valve body is stuck to the inner wall surface of the circulation air passage and malfunctions, the torque exceeding the torque of the valve drive motor is externally applied using the protrusion without disassembling the circulation air passage. Since it can be given to the body, the sticking of the valve can be easily repaired.

  Since the clothes washing machine of the present invention can apply torque higher than that of the motor to the valve body from the outside of the air passage, the sticking of the valve body can be easily repaired.

Configuration diagram of the washing and drying machine in Embodiment 1 of the present invention System diagram of the washer / dryer Side view of the main part of the washer / dryer Fig. 3 is an enlarged view of the main part of the washing and drying machine. FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4 of the washing and drying machine, in which (a) is a cross-sectional view of a main part showing a state in which the valve body closes the air passage; Cross section Other configuration diagram of the washing dryer Side view of other main parts of the washer / dryer Side view of main part of opening / closing mechanism of washing / drying machine in Embodiment 2 of the present invention Configuration diagram of a conventional washing and drying machine Cross section of the main part of another conventional washing and drying machine Side view of the washer / dryer

The first invention includes a water tank, a rotary tank provided rotatably in the water tank, a rotary tank drive motor that rotationally drives the rotary tank, a circulation air passage that introduces drying air into the rotation tank, and a circulation air And a valve body that opens and closes the circulation air path by rotating, a valve drive motor that drives the valve body, and a shaft that connects the valve body and the valve drive motor. In that, by providing a projecting portion that protrudes in the radial direction of the shaft at the outer position of the circulation air passage, even if the valve body is stuck to the circulation air passage and malfunctions, without disassembling the circulation air passage, Since the torque higher than that of the valve drive motor can be applied to the valve body from the outside, the sticking of the valve body can be easily repaired.

  According to a second aspect of the present invention, in particular, in the first aspect of the invention, the repair worker can set the rotation range of the protrusion by providing a stop wall with a predetermined gap from the protrusion with respect to the rotation range of the protrusion. Since the shaft cannot be rotated beyond this, damage to the valve drive motor or the like during repair can be prevented, and workability is further improved.

  In the third invention, particularly in the first and second inventions, the protruding portion protrudes downward from the rotating shaft of the shaft, and a substantially arc-shaped lid portion covering the shaft tail and the protruding portion is provided above the shaft. This prevents dirt from accumulating on the protrusions and preventing water from adhering, thereby improving workability.

  In the fourth aspect of the invention, particularly in the third aspect of the invention, the lid portion is formed integrally with the outer wall of the circulation air passage, so that accumulation of dirt or the like on the shaft can be reliably prevented with a simple configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a configuration diagram of a washing / drying machine according to a first embodiment of the present invention, FIG. 2 is a system diagram of the washing / drying machine, and FIG. 3 is a side view showing a main part of the washing / drying machine. 4 is an enlarged view of the main part of FIG. 3, FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4, and (a) is a cross-sectional view of the main part showing a state where the valve body closes the air passage. ) Is a cross-sectional view of the main part showing a state in which the valve body opens the air passage, FIG. 6 is a configuration diagram of another washing / drying machine, and FIG. 7 is a side view showing the main part of the washing / drying machine.

  1 to 5, a water tank 1 is elastically supported by a plurality of suspension mechanisms 3 inside a housing 2 of a washing / drying machine. The rotating tub 4 has a loading port 6 for taking in and out the laundry 5 on the front side, is configured in a substantially bottomed cylindrical shape, and is disposed in the water tub 1. The rotating tub 4 is rotatably supported by a rotating shaft 4a and accommodates laundry 5 such as clothes.

  The peripheral wall 7 of the rotating tub 4 is provided with a large number of holes 8 over the entire circumference, and the stirring baffle for lifting the laundry 5 in the rotating direction of the rotating tub 4 is provided inside the peripheral side wall 7 of the rotating tub 4. 9 is provided. The water tank 1, the rotating tank 4, and the rotating shaft 4 a are provided to be tilted forward and upward at an angle θ (for example, 10 to 20 °) with respect to the horizontal.

  In addition, a rotating shaft support portion 4b is provided on the rear surface of the rotating tub 4 in order to increase the strength with the rotating shaft 4a. The rotating shaft support 4b is configured in a blade shape so as to allow airflow to pass from the back surface of the rotating tank 4 into the rotating tank 4 during the drying process, and a plurality of the rotating shaft support parts 4b are formed radially around the rotating shaft 4a.

  A rotating tank drive motor 10 for rotating the rotating tank 4 is provided outside the rear side of the water tank 1 so as to rotate the rotating tank 4 forward and backward. The rotary tank drive motor 10 is constituted by a brushless DC motor or the like, and the rotation speed can be freely changed by inverter control.

  A door body 11 that opens and closes the insertion port 6 is provided on the front surface of the housing 2. The opening 1 a of the water tank 1 facing the inlet 6 is airtightly connected to the housing 2 by a flexible packing 12 that can be expanded and contracted. The door body 11 is provided with a transparent window so that the inside of the rotating tub 4 can be seen from the outside.

When the door body 11 is closed, the packing 12 provided in the opening 1a of the water tank 1 is in close contact with the inner surface of the door body 11, and the water tank 1 becomes a watertight and airtight space, and each of washing, rinsing, dehydration and drying is performed. When executing the process, water and air are not leaked to the outside from the opening 1a.

  A water supply valve (water supply means) 13 is attached in the housing 2, and a water supply path 14 communicating with the water tank 1 is connected to the water supply valve 13 through a detergent case (not shown). By opening and closing the water supply valve 13, tap water can be supplied to the water tank 1 and stopped.

  A drain hole 15 is provided at the bottom of the water tank 1. A drainage path 16 is connected to the drainage hole 15, and a drainage valve (drainage means) 17 is provided. By opening and closing the drain valve 17, the washing water in the water tank 1 can be drained and stopped.

  In the drainage path 16, an air trap 18 is provided in the vicinity of the lower end of the rear surface of the water tank 1, and the air trap 18 is connected to the upper end portion of the pressure detection path 19 through the pressure detection path 19 extending upward. Pressure detecting means 20 for detecting pressure is provided. The pressure detection means 20 includes, for example, a diaphragm inside, and includes a pressure sensor that detects pressure from the deformation amount of the diaphragm that is deformed when pressure is applied, and detects the level of the washing water supplied to the water tank 1. To do.

  Further, the drainage passage 16 is provided with a drain trap 21 formed in a substantially U shape on the downstream side of the drain valve 17. The drain trap 21 is formed by a bendable bellows-shaped drain hose, and the trap height is higher than the inner diameter of the drain hose and is provided in the housing 2 below the bottom of the water tank 1.

  An exhaust port 22 is provided in the peripheral side wall 7 in the upper front portion of the water tank 1, and a blower port 23 is provided in the back surface portion of the water tank 1. The exhaust port 22 and the air blowing port 23 are connected to each other by a circulation air passage 24 extending from the front upper side of the water tank 1 toward the rear side.

  The circulation air passage 24 includes a drying filter device 25 that captures lint that passes through the circulation air passage 24 together with the drying air, a blower unit 26 that supplies the drying air to the rotating tub 4, and dehumidification and heating of the drying air. A heat pump device 27 for performing the above and an opening / closing mechanism 28 for opening and closing the circulation air passage 24 are provided.

  The blower means 26 includes a fan 26a having a blade shape and a fan motor 26b that rotationally drives the fan 26a. The drying air blown by the blower 26 is blown into the rotary tank 4 from the blower opening 23.

  The opening / closing mechanism 28 has a valve body 29 composed of a rotating shaft 29a supported at one end on the inner wall of the circulation air passage 24 and a plate-like plate portion 29b connected to the rotating shaft 29a, and an output shaft 30a rotating. From a valve shaft 30 that is fixed to the outer wall of the circulation air passage 24 so as to be coaxial with the shaft 29a, and a cylindrical shaft 31 that connects the rotation shaft 29a of the valve body 29 and the output shaft 30a of the valve drive motor 30. Composed. The shaft 31 passes through the opening hole 24a provided in the circulation air passage 24 and is fitted to the rotation shaft 29a. Between the peripheral edge of the opening hole 24a and the shaft 31, a packing 31b such as an O-ring for sealing the circulating air passage 24 and the shaft 31 is disposed.

  The valve body 29 is driven by the valve drive motor 30, so that power is applied to the valve body 29 via the shaft 31, and the rotation stops by contacting the inner wall of the circulation air passage 24. The circulation air passage 24 is switched between opening and closing by rotating the valve drive motor 30 forward and backward.

  The shaft 31 and the valve drive motor 30, and the shaft 31 and the rotation shaft 29a are fitted in a shape such as a D cut, and can rotate without idling.

  The shaft 31 is formed with a protruding portion 31a that protrudes in the radial direction from the axial center at a position outside the circulation air passage 24. For example, a repair operator grasps the protruding portion 31a and manually rotates the protruding portion 31a. By doing so, the valve element 29 can be rotated.

  The protrusion 31a may be formed integrally with the shaft 31, or may be formed separately from the shaft 31 and fixed so that the protrusion 31a does not rotate with respect to the shaft 31. Moreover, the shape of the protrusion part 31a should just be a shape which can operate the protrusion part 31a manually, and it does not specifically limit it. Moreover, it is good also as a structure which forms multiple protrusion part 31a in the radial direction of the shaft 31, for example, forms a pair in the position which opposes the shaft 31, for example.

  The circulation air passage 24 is composed of two or more parts in consideration of workability for mounting the valve body 29 therein, and is fixed so as to be disassembled with screws or the like.

  The drying air discharged into the water tank 1 from the hole 8 of the rotating tank 4 flows into the circulation air passage 24 from the exhaust port 22 as shown by an arrow A in FIG. 1, and the drying filter device 25, the heat pump device 27, It is configured to circulate to the rotating tub 4 through the blowing means 26 and the blowing port 23.

  The heat pump device 27 includes a compressor 32 that compresses the refrigerant, a radiator (heating means) 33 that radiates heat of the compressed high-temperature and high-pressure refrigerant, and a capillary tube that reduces the pressure of the high-pressure refrigerant. The pipe 34 is connected to the means 34 so that the refrigerant circulates through a heat absorber (dehumidifying means) 35 in which the refrigerant whose pressure is reduced to a low pressure takes heat from the surroundings.

  The drying air blown by the blowing means 26 is cooled and dehumidified by a heat absorber 35 provided in the circulation air passage 24, heated by the radiator 33, supplied from the blower opening 23 to the rotary tank 4, and the circulation air is discharged from the exhaust outlet 22. It flows into the path 24 and circulates.

  Further, the circulation air passage 24 has a discharge port 37 through which a part of the drying air flowing out from the rotary tank 4 can be discharged out of the circulation air passage 24, and the discharge port 37 is configured to be opened and closed by an exhaust valve 37a. doing. Between the exhaust port 37 and the heat absorber 35, there is an intake port 38 through which outside air can be introduced into the circulation air passage 24, and the intake port 38 is configured to be opened and closed by an intake valve 38a.

  A drying filter device 25 that captures lint that passes through the circulation air passage 24 together with the drying air is disposed between the discharge port 37 and the intake port 38 of the circulation air passage 24.

  The control means 40 is disposed in the lower front part in the housing 2 and controls the rotary tank drive motor 10, the water supply valve 13, the drain valve 17, the blower means 26, the heat pump device 27, the valve drive motor 30, and the like. Control each step of washing, rinsing, dehydration and drying sequentially. Further, the control means 40 receives the output of the pressure detection means 20 for detecting the pressure in the water tank 1 and the water level of the washing water, and the output of the motor rotation speed detection means 10 a for detecting the rotation speed of the rotary tank drive motor 10. Is done.

  The operation and action of the washing / drying machine configured as described above will be described below. By inputting the selection of the driving course and the time of each process from the operation display unit 42 provided at the upper front of the housing 2, the control means 40 performs a series of operations from washing to drying based on the setting contents. It is possible to carry out, and it is also optionally possible to carry out only the drying step.

  When washing is performed, the door body 11 is opened, the laundry 5 is put into the rotary tub 4, and an operation course or the like is input from the operation display unit 42 to start the operation. Water and detergent are supplied inside, and the rotating tub 4 is rotated by the rotating tub drive motor 10 to start the washing process.

  When the rotating tub 4 rotates at a predetermined speed (for example, 50 rpm), the laundry 5 is lifted in the rotating direction by the stirring baffles 9 provided at a plurality of locations on the inner peripheral surface, and falls from above in the rotating tub 4. The washing is performed by repeating the tapping washing by the predetermined time.

  After the washing process, the rinsing process and the dehydrating process are executed to complete the washing. In the rinsing process, first, the drain valve 17 is opened, the draining process for draining the washing water used in the previous process, and the rotating tub 4 is rotated at a high speed (for example, 900 rpm), so that dirt and detergent contained in the laundry 5 An intermediate dehydration process for dehydrating the water together with water, a water supply process for opening the water supply valve 13 and supplying water to the water tank 1, and rotating the rotating tank 4 at a predetermined speed (for example, 50 rpm) to stir the laundry 5 The rinsing process is performed sequentially.

  After performing the rinsing process a predetermined number of times, the draining process of draining the washing water of the previous process by opening the drain valve 17, rotating the rotating tub 4 at a high speed (for example, 900 to 1700 rpm), and the moisture and detergent contained in the laundry 5 A dehydration step consisting of a main dehydration step of dehydrating the portion is performed.

  In the washing process, the amount of foaming of washing water increases, for example, when the amount of detergent put into the clothes is large. When there is a lot of foaming, there is a risk that foam may reach the blowing means 26 and the like from the blower opening 23 through the circulation air passage 24. Therefore, during the washing process, the valve element 29 moves the air passage by operating the valve drive motor 30. Close (FIG. 5A). However, since the foam reaches the valve body 29, the detergent component adheres between the circulation air path 24 and the valve body 29. When the washing process is completed and the washing water in the rotary tub 4 is drained, the foam is also discharged. However, the detergent component has a high viscosity and a part of the foam remains in the valve body 29. When not used, the detergent component may harden and the valve body 29 may adhere to the inner wall of the circulation air passage 24.

  In the present invention, the shaft 31 connected to the rotating shaft 29 a of the valve body 29 is provided with a protruding portion 31 a outside the circulation air passage 24, so that a torque higher than that of the valve drive motor 30 can be applied from the outside of the circulation air passage 24. Since it can be applied to the body 29, the adhesion between the valve body 29 and the inner wall surface of the circulation air passage 24 can be easily repaired without removing the valve drive motor 30 or disassembling the circulation air passage 24.

  When an operation course that consistently executes from the washing process to the drying process is selected and input, when the washing process is completed, the control unit 40 executes the drying process following the washing process. Moreover, when drying wet clothes etc., only a drying process can be performed.

  In the drying process, the valve drive motor 30 is operated in the direction opposite to that at the time of closing, thereby rotating the valve body 29 to the open side (FIG. 5B) and blowing air into the rotary tub 4 by the blowing means 26. can do.

  In the drying process, when the laundry 5 or wet clothing (hereinafter referred to as clothing) that has been dehydrated is stored in the rotating tub 4 and the drying process is executed, the rotating tub 4 is rotated at the rotation speed set in the drying process. , The air blowing means 26 and the heat pump device 27 are driven, and the air circulation of the drying air into the rotary tub 4 is started.

  In this drying process, the water tank 1 plays the same role as a drying chamber in a clothes dryer.

In the heat pump device 27, the refrigerant is compressed by the operation of the compressor 32, and this pressure causes the refrigerant to flow through the pipeline 36 from the compressor 32 and circulate through the radiator 33, the throttle means 34, the heat absorber 35, and the compressor 32. . Since the heat of the compressed refrigerant flows into the radiator 33 and is radiated to the air in contact with the fins provided in the pipes 36 provided in the radiator 33, the drying air flowing through the circulation air path 24 Is heated.

  The heated drying air is supplied from the blower opening 23 to the rotary tub 4, deprived of moisture from the clothes 5, becomes moist air, and flows into the circulation air path 24 from the exhaust outlet 22. As the garment 5 is dried, lint such as lint is generated from the garment 5. The drying air that has flowed in from the exhaust port 22 passes through the drying filter device 25, and lint contained in the air is captured.

  The drying air from which the lint has been removed by the drying filter device 25 is dehumidified by the removal of sensible heat and latent heat when passing through the heat absorber 35 through which the refrigerant that has been depressurized by the throttling means 34 flows to a low pressure. The drying air thus dried passes through the radiator 33 and is heated. Condensed water generated by dehumidification by the heat absorber 35 is dropped into a water storage section (not shown) and drained outside the apparatus through the drainage path 16.

  The amount of heat by which the drying air is heated by the radiator 33 is approximately equal to the sum of the power consumption of the compressor 32 and the amount of heat absorbed from the drying air by the heat absorber 35. The drying air can be heated by obtaining an output that is equal to or higher than the electric power input to 32. However, if the drying air in the circulation air passage 24 is repeatedly circulated, the amount of heat of the entire drying air will continue to accumulate for the amount of heat radiated naturally from the amount of power consumed by the compressor 32. Become.

  In addition, the amount of heat of the refrigerant in the heat pump device 27 continues to increase, the temperature and pressure of the refrigerant rise, and there is a possibility that the compressor 32 will be overloaded. In order to avoid this, a discharge port 37 for exhausting a part of the drying air flowing through the circulation air passage 24 to the outside of the circulation air passage 24 and an intake port 38 for introducing outside air into the circulation air passage 24 are provided. Yes.

  The control means 40 detects the temperature of the refrigerant flowing through the pipe line 36 by the refrigerant temperature detection means 43 provided in the pipe line 36 near the inlet of the radiator 33, and controls the opening and closing of the discharge port 37 and the intake port 38. The heat pump device 27 is operated in a stable state.

  As described above, in the present embodiment, the water tank 1, the rotary tank 4 provided rotatably in the water tank 1, the rotary tank drive motor 10 that rotationally drives the rotary tank 4, and the rotary tank 4 are dried. A circulating air passage 24 for introducing working air, a blowing means 26 for blowing air to the circulating air passage 24, a valve body 29 that opens and closes the circulating air passage 24 by rotation, and a valve drive motor 30 that drives the valve body 29. And a shaft 31 for connecting the valve body 29 and the valve drive motor 30, and the shaft 31 is provided with a protrusion 31 a outside the circulation air passage 24, so that the valve body 29 is connected to the inner wall of the circulation air passage 24. Even if it becomes stuck and malfunctions, the torque higher than the valve drive motor 30 can be manually applied to the valve body 29 from outside without disassembling the circulation air passage 24 or removing the valve drive motor 30. Can be fixed, easily fixed

  In addition, by comprising a heating means with the radiator 33 of the heat pump device 27 and a dehumidifying means with the heat absorber 35, clothes and the like can be dried at a low temperature, and a predetermined drying performance can be achieved with a small amount of power consumption. Can be obtained.

  Even if the heater is used as the heating means and the water-cooled or air-cooled heat exchanger is used as the dehumidifying means, the effect of improving the workability of fixing and repairing the valve body 29 is the same as described above. An effect can be obtained.

As shown in FIGS. 6 and 7, the circulation air passage 24 has a branch passage 24b branched from the circulation air passage 24 and a second air outlet 23a for sending air into the rotary tank 4 through the branch passage 24b. And
When the air blower 26 is driven when the valve body 29 closes the circulation air passage 24 side, the inner wall of the air passage of the valve body 29 may be configured to be blown from the second air outlet 23a via the branch passage 24b. As for the effect of improving the workability of the repair of the fixation with the same, it has the same effect.

Further, even when the speed reduction mechanism is provided between the valve drive motor 30 and the shaft 31, and the rotation shaft 29a and the output shaft 30a of the valve drive motor 30 are not coaxial, the same effect can be obtained in terms of improving repair workability. .
(Embodiment 2)
FIG. 8 is a side view of the main part of the air passage opening / closing mechanism of the washing / drying machine according to the second embodiment of the present invention. In the present embodiment, the projecting portion 31a is formed to project downward, and the shaft portion 31 is provided with a lid portion 24d having stop walls 24c disposed at both ends with a rotation range W of the projecting portion 31a and a predetermined gap d. It is provided in a substantially arc shape above.

  The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The outer wall of the circulation air passage 24 has a substantially arc-shaped lid portion 24d configured to cover the upper side of the shaft 31, and the stop walls 24c formed at both ends of the lid portion 24d have a rotation range W of the protruding portion 31a. It has a predetermined gap d (for example, 1 mm). As a result, the rotation range of the shaft 31 is limited, so that a repair operator does not accidentally rotate the shaft 31 far beyond the rotation range W of the shaft 31.

  Since the rotation range W of the shaft 31 is determined by contact between the valve element 29 and the inner wall surface of the circulation air passage 24, if the shaft 31 is rotated beyond that range, a torsional stress acts on the shaft 31 and the rotation shaft 29a. The shaft 31 and the valve body 29 may be damaged. In the second embodiment, the shaft portion 31 and the valve body 29 can be prevented from being damaged by forming the lid portion 24d. Moreover, since the clearance gap d is provided between the rotation range W of the protrusion 31a and the stop wall 24c, the protrusion 31a stops before the valve element 29 comes into contact with the inner wall surface of the circulation air passage 24. Since it contacts the wall 24c, the valve body 29 can be stably rotated without stopping the rotation of the valve body 29. Further, since the lid portion 24d that covers the upper portion of the shaft 31 is provided, it is possible to prevent deterioration of workability and malfunction due to accumulation of dirt on the shaft 31 portion.

  As described above, in the washing machine according to the present invention, when the valve body provided in the air passage and the inner wall surface of the circulation air passage are fixed, the repair operator manually rotates the valve body from the outside of the air passage. Can be repaired, so that complicated work such as removal of the motor is not required, and the repair work is simplified, which is useful as a washing machine.

DESCRIPTION OF SYMBOLS 1 Water tank 4 Rotating tank 10 Rotating tank drive motor 24 Circulating air path 26 Blower means 29 Valve body 30 Valve drive motor 31 Shaft 31a Protrusion part

Claims (4)

A water tank, a rotary tank rotatably provided in the water tank, a rotary tank drive motor that rotationally drives the rotary tank, a circulation air passage that introduces drying air into the rotation tank, and the circulation air passage A blower that blows air, a valve body that opens and closes the circulation air passage, a valve drive motor that drives the valve body, and a shaft that connects the valve body and the valve drive motor. A washing and drying machine in which a protruding portion protruding in the radial direction of the shaft is formed at an outer position of the circulation air passage. The washing / drying machine according to claim 1, further comprising a stop wall provided with a predetermined gap with respect to the rotation range of the protrusion. The washing / drying machine according to claim 1 or 2, wherein the protruding portion protrudes downward from a rotation center of the shaft, and a lid portion that covers the shaft and the protruding portion is provided above the protruding portion. The washing / drying machine according to claim 3, wherein the lid is formed integrally with the outer wall of the circulation air passage.

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