JP2003164691A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To arrange an air channel for drying in which a sufficient cross sectional area is ensured by effectively utilizing a space between an external case and an external tank. <P>SOLUTION: A corner section between the peripheral surface section 3b of the external tank 3 and the upper section of the front end surface is formed into a tilted section 3e which is indented into a forward downward tilted form. Then, a blow-out pipe member 37 which is one section of the air channel for drying to connect a heating chamber 35 and the external tank 3 is arranged by bending it into an L-shape so as to go along with the tilted section 3e. Also, the channel is made approximately in parallel with the bottom section of a case 24a in which the board of an operation panel 24 arranged at a diagonally upper forward area of the channel, and a separating distance between them is sufficiently ensured. At the same time, even when the external tank shakes, a point contact is prevented from occurring, and the channel and the case 24a are planarly brought into contact with. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type washer / dryer having a drum which rotates around a horizontal axis or an inclined axis.

[0002]

2. Description of the Related Art Generally, a drum-type washer / dryer has a structure in which a cylindrical basket-shaped drum is rotatably arranged in an outer tub about a horizontal axis or a forward tilting axis. The laundry stored in the drum is tapped and washed by rotating the drum in the state of storing. After the washing is completed, the drum is slowly rotated to feed heated air into the drum so that the laundry is dried.

[0003]

One of the great demands of users for such a drum type washer / dryer is that the washing capacity (drying capacity) is large while the installation space is small. Particularly in an apartment house such as a condominium, since it is necessary to install a washing machine in a waterproof pan of a specified size, there are limitations on the width and depth dimensions of the outer box. Therefore, it is preferable to make the size of the outer tub as large as possible while keeping the size of the outer box within such a limited range. As a result, the gap between the outer tub and the inner surface of the outer box is inevitably small. Therefore, it is required to effectively use the space in this gap and appropriately arrange various members to be arranged outside the outer tub. It

Particularly in a drum type washer / dryer, it is necessary to arrange a circulating air flow path for drying in the space between the outer box and the outer tub. Since the cross-sectional area of this air flow path influences the air volume of the heated air sent to the drum during drying, it is desirable to secure this cross-sectional area as wide as possible. However,
Since this also narrows the space between the outer tank and the outer box, proper arrangement of the above-mentioned various members is very important.

Further, in the drum type washer / dryer, there are cases where it is desired to accurately detect the rotational position and the rotational angle of the drum. For example, in the following cases. That is, when the drum is rotated at a high speed in a state in which the laundry is unevenly distributed on the inner peripheral wall of the drum during centrifugal dehydration, the unbalance of the mass distribution around the rotation axis causes the drum and the outside supporting the drum to rotate. Abnormal vibration of the tank and the outer box may cause a large noise, and a large load may be applied to the bearing and the spindle itself, which may cause a failure.

Therefore, as one of means for solving such a problem, in the drum type washing machine proposed by the present applicant in Japanese Patent Application No. 11-203822 (see Japanese Patent Application Laid-Open No. 2001-29682), the main shaft of the drum is A plurality of water storage chambers whose inner circumference is open are arranged radially around the. On the other hand, the outer tank is provided with a water injection nozzle so that water can be injected into the water storage chamber even when the drum is rotating. During the dehydration operation, first, the drum is slowly rotated to empty all the water storage chambers, and then the rotational speed of the drum is increased to determine whether or not there is an eccentric load due to uneven distribution of laundry. When the eccentric load exceeds the allowable value, water is jetted from the water injection nozzle to fill all the water storage chambers once, and then the drum is temporarily decelerated at the timing corresponding to the position of the eccentric load. Thus, the water in a predetermined water storage chamber is dropped to reduce its weight, thereby balancing the entire drum with the eccentric load due to the laundry and the weight of the water remaining in the water storage chamber. In order to accurately determine the timing of such drum deceleration, it is important to accurately determine the rotation angle of the drum. However, the conventional rotary position detector of this type has a complicated structure and is expensive.

The present invention has been made to solve the above problems, and a first object thereof is to:
By devising the structure and arrangement of the air flow path for drying that is arranged in the space between the outer box and the outer tub, this space can be effectively utilized, and as a result, the washing capacity can be reduced while suppressing the size of the outer box. (EN) Provided is a drum type washer / dryer capable of increasing the size. At the same time, by ensuring that the cross-sectional area of the drying channel is as large as possible, the air volume during drying is secured,
It is an object of the present invention to provide a drum type washer / dryer capable of obtaining high drying efficiency.

A second object of the present invention is to provide a drum type washer / dryer equipped with a rotational position detector capable of detecting the rotational position of the drum with high accuracy with a simple structure. To provide.

[0009]

Means for Solving the Problems and Effects The first invention made to solve the above problems is to provide an outer box, a peripheral surface of which is substantially cylindrical, and an axis of which extends in the front-rear direction. A drum-type washer / dryer comprising: an outer tub arranged in the outer box; and an operation section inclined at a front upper corner of the outer box so as to be directed obliquely upward. Inside the operation part, a corner between the peripheral surface of the outer tub and the front end face is formed in an inclined shape in accordance with the operation part, and the outer part is passed from above the outer tub to above the corner. The drying air flow path connected to the front end surface of the tank is arranged so as to be substantially parallel to the operation portion along the inclined shape of the corner portion of the outer tank.

According to the structure of the drum type washer / dryer according to the first aspect of the present invention, the operating portion and the drying air flow path inside thereof are arranged substantially parallel to each other, so that the distance between them is reduced. The part does not become extremely small, and a large distance can be secured as a whole. Therefore, even when the outer tub vibrates significantly during centrifugal dehydration or the like, it is possible to reduce the possibility that the drying air flow channel that vibrates integrally with the outer tub will contact the operating portion. Further, even if the drying air flow path contacts the operating portion, the contact does not become a dot-like contact in a very small area but a surface-like contact in a relatively large area. Therefore, since the impact force at the time of contact is dispersed, it is possible to avoid damage to one or both of the operation unit and the drying air flow path. Furthermore, since the corners of the outer tub are recessed inward and the drying air flow path is arranged therein, it is not necessary to reduce the size of the outer tub or increase the size of the outer box,
As a result, it contributes to increase the washing capacity without increasing the size of the outer box. In addition, since the cross-sectional area of the drying air flow channel can be secured sufficiently large, a large amount of drying air can be obtained and high drying efficiency can be achieved.

In the drum type washer / dryer according to the first aspect of the present invention, it is preferable that the air passage is bent in a substantially V shape near the corner of the outer tub. According to this configuration, since the air smoothly flows in the air flow path, the heated air can be vigorously fed into the outer tub. for that reason,
High drying efficiency can be achieved. Further, since the air flow is not stopped, it is possible to prevent dust and the like from collecting in that portion in the air flow path.

A second aspect of the present invention made to solve the above-mentioned problems is to install a flow passage cover on the outer wall surface of an outer tub in which a drum is rotatably installed, and to be surrounded by the flow passage cover and the outer tub outer wall surface. In a drum type washer / dryer configured to form an air flow path for drying in a space, a groove having a substantially U-shaped cross section is formed at an end of the flow path cover that comes into contact with the outer tub, On the outer wall surface of the outer tub, a plurality of bosses for screwing screws are provided upright at a position projecting into the groove, and a boss is projected along the groove at a position sandwiched by the boss and one wall surface of the groove. A strip is formed, and an elastic member for sealing is fitted between the boss and one wall surface of the groove strip, and the elastic member is pressed by the projecting strip to form the flow path cover and the outer tank. It is characterized in that the contact part is sealed.

In the drum type washer / dryer according to the second aspect of the present invention, the plurality of screw-threaded bosses also serve as guides for fitting the elastic member for sealing. Therefore, as compared with the case where such a boss is provided outside the contact portion between the flow path cover and the outer tub, the width of the flow path cover can be ensured to be wide, and the gap between the outer tub and the outer box can be increased. Without increasing the cross-sectional area of the air flow path. for that reason,
Effectively use the space between the outer box and the outer tank,
This contributes to increase the washing capacity without increasing the size of the outer box.

A third aspect of the invention made to solve the above problems is a motor base mounted on the outside of the outer tank, in which a drum that rotates around a horizontal or inclined main shaft is arranged in the outer tank. In a drum type washer / dryer in which the drum is rotationally driven through the main shaft by a motor that includes a fixed stator and a rotor that is fixed to the main shaft so as to surround the stator, the rotational position of the drum is changed. Rotational position detection means for detecting is provided, and the rotational position detection means opposes a light passage portion formed in the rotor housing of the rotor around the main shaft at predetermined angular intervals with the light passage portion interposed therebetween. As described above, the light emitting unit and the light receiving unit fixed to the motor base are included.

Here, the light passage portion may be, for example, an opening or a notch. In the drum type washer / dryer according to the third aspect of the present invention, the drive current is supplied to the winding of the stator,
As a result, when the rotor is rotating, the light reaches the light receiving unit each time the light passing unit formed in the rotor housing passes through the optical path of the light emitted from the light emitting unit. Therefore, the light receiving unit can obtain a signal including information such as the rotation angle and the rotation speed of the rotor. According to this structure, since the rotor housing is provided with openings and cutouts in advance and only the light emitting portion and the light receiving portion are provided on the motor base, the rotational position of the drum can be adjusted with a very simple structure. You can get information. Further, particularly in an outer rotor type motor, since the outer diameter of the rotor housing is large, the light passage portions can be easily formed at minute angular intervals. Therefore, the rotation angle of the rotor can be detected with high accuracy.

If the light emitting part and the light receiving part are attached to the U-shaped holder so as to face each other, the holder only needs to be installed at a predetermined position of the motor base. It becomes easy to adjust the position. Also, preferably,
It is preferable that the size of the light passing portion is at least one in one rotation and is different from other light passing portions.
According to this configuration, by detecting the positions of the light passing portions having different sizes, the rotation position can be used as a reference. Once the reference of the rotational position is determined, the absolute rotational position of the drum can be detected by counting the number of signals corresponding to other light passing portions from that position.

By the way, in the above-described motor, an opening for inspecting the gap between the magnet of the rotor and the winding of the stator is usually formed in the rotor housing that holds the magnet. However, since the rotor generally rotates at a high speed, it is necessary to make the opening small in order to secure the strength to withstand it. As a result, it is difficult to inspect the voids, which is one of the causes of an inspection error.

Therefore, in order to solve these problems,
A drum type washer / dryer according to a fourth aspect of the present invention includes a stator that is provided with a drum that rotates around a horizontal or inclined main shaft in an outer tub, and is fixed to a motor base that is attached to the outside of the outer tub. In a drum type washing and drying machine in which the drum is driven to rotate via the main shaft by a motor composed of a rotor fixed to the main shaft so as to surround the stator, a magnet for the rotor is provided in the motor base. It is characterized in that an opening is formed at a position where a gap between the stator winding and the winding is seen.

In the drum type washer / dryer according to the fourth aspect of the present invention, instead of providing the inspection opening in the rotor housing, the inspection opening is provided in the motor base.
As a matter of course, since the motor base itself does not rotate, it is possible to provide a large opening without worrying about reduction in strength. Therefore, the inspection of the space between the openings can be facilitated and the efficiency of the inspection can be improved.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A drum type washer / dryer according to one embodiment of the first to fourth inventions will be described below with reference to the drawings. FIG. 1 is a side vertical cross-sectional view showing the overall structure of the drum type washer / dryer of the present embodiment, and FIG.

The outer box 1 forming the outer shape of the drum type washer / dryer has a front surface portion 1a which is directed obliquely upward.
A substantially circular clothes inlet 1b is formed in a, and a lateral opening type door 2 through which the inside can be seen is provided therein.
The upper portion of the front surface portion 1a of the outer box 1 is curved rearward, and the upper surface portion 1a
The operation panel 24 is attached to the curved surface 1d,
A detergent container 12a that can be pulled out forward is juxtaposed laterally.

Inside the outer box 1, an outer tub 3 having a peripheral surface 3b formed in a substantially cylindrical shape and a bulging portion 3d in which a part thereof bulges is provided with a damper 4 for supporting both left and right lower sides. And a spring (not shown) that suspends and supports the upper part of the upper part, and is appropriately swingably held. The front part of the outer tub 3 is the clothing inlet 1b of the outer box 1.
Is a circular opening 3a facing the
The opening 3a and the clothes inlet 1b are elastically connected by an inlet packing 5 made of an elastic material such as rubber while maintaining watertightness and airtightness. Further, a heater 23 for heating water is arranged in the bulging portion 3d of the outer tub 3.

Inside the outer tub 3, a large number of water passage holes 6d are bored in a body portion 6b having a substantially cylindrical peripheral surface, and a rear surface portion 6 is formed.
While c is closed, a drum 6 having a circular opening 6a for loading clothes is pivotally supported by a spindle 7. One end of the main shaft 7 is firmly fixed to the rear center of the rear surface portion 6c of the drum 6, and is rotatably supported by a bearing 9 held by a motor base 8 fixed to the rear surface portion 3c of the outer tub 3. Has been done.

The rotor 102 of the motor 10, which is an outer rotor type DC brushless motor, is attached to the end of the main shaft 7 protruding rearward from the motor base 8, while the stator 101 of the motor 10 is fixed to the motor base 8. Has been done. The rotor 102 including permanent magnets is arranged so as to surround the outer peripheral side of the stator 101 including windings, and thus the motor 10 has a thin structure in the extending direction of the main shaft 7. When a drive current is supplied to the stator 101 from a control circuit (not shown), the rotor 102 rotates, and the drum 6 is rotationally driven via the main shaft 7 at the same rotation speed as the rotor 102.

As is apparent from FIG. 1, the outer tub 3 in which the drum 6 is housed is arranged so that the center axis C of the drum 6 (which coincides with the center axis of the main shaft 7) is inclined by a predetermined angle θ with respect to the horizontal line. It is arranged with a rising slope. The inclination angle θ is set to, for example, about 5 to 30 °. Front part 1 of outer box 1
The inclination of a is formed according to the inclination of the outer tub 3 and the drum 6, but it is not always necessary that they are at the same angle.

A water supply unit 11 including a water supply valve and a bath water supply pump is provided in the upper space of the outer box 1. The water supply unit 11 supplies tap water to an external water tap. A hose 11a, a bath water supply hose 11b leading to a bath tub, etc. are detachably connected. Water supply section 11
In front of the detergent container 12a is provided with a detergent container 12a in which the detergent container 12a can be pulled out freely. The water supplied from the water supply unit 11 to the detergent container 12 passes through the detergent container 12a,
The water flows into the outer tub 3 from a water inlet 13 provided in front of the outer tub 3 through a water injection pipe 12b connected to the bottom of the detergent feeding part 12.

When water is supplied to and stored in the outer tub 3, this water flows into the drum 6 through the water passage hole 6d. In addition, the water discharged from the laundry in the drum 6 during dewatering is scattered to the outer tub 3 side through the water passage hole 6d. A drain port 14 is provided behind the bottom of the outer tub 3, and the drain port 14 is connected to the inflow port of a drain valve 15. When the drain valve 15 is opened, the water stored in the outer tub 3 It is discharged to the outside of the machine through the drainage pipe 16.

The drum type washer / dryer is equipped with a balance adjusting mechanism for preventing vibration of the drum 6 due to uneven displacement of the laundry during centrifugal dehydration. This balance adjusting mechanism is composed of a balancer 26 attached to the rear of the rear surface portion 6c of the drum 6, a nozzle 27 and a water supply passage 28 which are directed forward and are provided on the rear surface portion 3c of the outer tub 3. Balancer 2
6 has a structure in which pocket-shaped water storage tanks having an opening on the inner peripheral side are radially arranged around the main shaft 7. On the other hand, the nozzle 27 is positioned so that the water sprayed from the tip of the nozzle 27 enters the inside of the water storage tank located in front of the balancer 26.

Furthermore, the drum type washer / dryer has a characteristic structure for detecting the rotational position of the drum 6. Next, the configuration of this rotational position detector will be described. FIG. 3 is a side view showing only the motor 10 in FIG. 1 in an external view.

A peripheral portion of a bowl-shaped rotor housing 102a of the rotor 102 surrounds the stator 101 and extends further forward, and light-passing holes 102b are formed around the central axis C at predetermined angular intervals in the edge portion thereof. Has been done. On the other hand, a detector holder 25 having a U-shaped cross section is fixed to the motor base 8 so as to sandwich this edge portion between the inner side and the outer side, and the light emitting section 251 and the light receiving section 252 face the detector holder 25. Is provided. Furthermore, one of the light passage holes 102b
Only one of them is a rotation reference position hole 102c having a size larger than the other holes in the rotation direction.

When the rotor 102 rotates, the light passage hole 1
02b and the rotation reference position hole 102c come between the light emitting unit 251 and the light receiving unit 252, the light emitted from the light emitting unit 251 reaches the light receiving unit 252. Therefore, the light receiving signal by the light receiving unit 252 when the rotor 102 rotates at a constant speed is as shown in FIG. 9 (B). Since the light receiving signal corresponding to the rotation reference position hole 102c can be distinguished from others, the generation position of this signal can be set as the rotation reference position of the drum 6, and the light passage hole 102b can be set to that position.
The absolute rotation angle or position can be detected with high accuracy by counting the received light signals generated in the above.

The rotational position detector as described above is particularly useful for eliminating an eccentric load caused by a bias of the laundry at the start of the dehydration operation. The operation will be briefly described. That is, at the start of the dehydration operation, the drum 6 is rotationally driven at a rotational speed such that the centrifugal force acting on the laundry becomes larger than the gravity. At this time, the laundry sticks to the inner surface of the body 6b of the drum 6 and rotates integrally with the drum 6. In this state, for example, the stator 101 of the motor 10
The magnitude of the eccentric load occurring at that time, that is, the amount of eccentricity and the position of the eccentric load in the circumferential direction of the drum 6 are detected based on the torque current component of the current flowing through the. If the amount of eccentricity detected at this time exceeds the allowable value, balance adjustment is executed.

In the balance adjustment, first, tap water is sent from the water supply section 11 to the nozzle 27 through the water supply passage 28,
Water is injected from the nozzle 27 into each water tank of the rotating balancer 26 in a non-contact manner. Since the centrifugal force acting on the water in the water tank is larger than the gravity, it is biased toward the outer peripheral side and is retained in the water tank with almost no spilling from the opening. When almost all water is stored in all water tanks, there is almost no eccentric load caused by this water. On the other hand, since the laundry is pressed against the inner peripheral wall surface of the body portion 6b of the drum 6 by the centrifugal force, the state of the eccentric load due to the uneven distribution of the laundry does not change.

Next, by utilizing the position of the eccentric load detected previously, the rotation control of the drum 6 is performed so as to spill the water in the water tank at the same position as the eccentric load or at the position closest to the eccentric load. To do. That is, the state in which the drum 6 is rotated at a rotational speed at which the centrifugal force acting on the water in the water tank exceeds gravity is temporarily reduced to a rotational speed at which the centrifugal force becomes smaller than the gravity. Then, at that time, water flows out from the water storage tank located above the rotation of the drum 6 and the amount thereof decreases. The timing at which the rotational speed is reduced depends on the eccentric position, but the eccentric position can be determined by the rotational position detector and the rotational position detector can also determine the timing at which the rotational speed is reduced. Since the rotational position can be accurately calculated with this detector, the amount of water in the water storage tank at an appropriate position corresponding to the eccentric position can be reduced, and the drum 6 can be quickly moved.
Balancing can be achieved.

The structure of the rotational position detector can be modified as shown in FIG. That is, in the example shown in FIG. 10, the collar portion 102 extends further outward from the outer edge portion of the rotor housing 102a in a plane substantially perpendicular to the central axis C.
e is formed, and a notch 102 for passing light is formed in the collar 102e.
forming f. A light emitting portion 251 and a light receiving portion 252 are provided so as to face each other so as to sandwich the collar portion 102e from the front and rear. In this example, although a space is required on the outer peripheral side of the rotor housing 102a, it is advantageous to reduce the thickness in the extending direction of the central axis C.

Next, the structure for the drying operation in the drum type washer / dryer will be described. 4 is a side view showing an air flow path for drying, FIG. 5 is a rear view, FIG. 6 is a sectional view taken along the line AA ′ in FIG. 5, and FIG. 7 is an enlarged view of a portion B in FIG. .

A water-cooled heat exchanger 3 is provided on the right side of the rear surface of the outer tank 3.
0 is arranged, and an air flow flows into the heat exchanger 30 from the inside of the outer tub 3 through the air outlet opening 31 formed in the lower portion of the rear surface of the outer tub 3. Water is selectively supplied from the water supply unit 11 to the inside of the heat exchanger 30, and when moist air flows from the inside of the outer tub 3, the water is rapidly cooled and is removed from the air. Water vapor is condensed and liquefied. Therefore, the heat exchanger 3
The air that has passed through 0 becomes dry air with almost all water removed.

The upper portion of the heat exchanger 30 is connected to the blower chamber 33 via a circulation air passage 32 provided in the upper right portion of the outer tub 3. The blower chamber 33 is provided with a blower 34 therein, and supplies the air sucked from the circulation air passage 32 to the front heating chamber 35. The heating chamber 35 is provided with a heater 36 inside and heats the air passing therethrough. An outlet pipe member 37 bent in a dogleg shape is connected to the front of the heating chamber 35, and an outlet 38 at the lower end of the outlet pipe member 37 is formed at the upper edge of the opening 3 a of the outer tub 3. It is fitted and fixed in the outlet opening attachment portion 3f. Further, the outlet port mounting portion 3f also serves as a guide for the inlet port packing 5, and the edge portion 5a of the inlet port packing 5 is attached to the extension piece of the outlet port mounting portion 3f.
By covering the two, they are fixed while ensuring the airtightness and watertightness of both.

At a position along the outlet pipe member 37,
The corner portion between the peripheral surface portion 3b of the outer tub 3 and the front end surface is an inclined portion 3e.
Is formed so as to be recessed inward. The blow-out tube member 37 is bent in a dogleg shape at an angle along the inclined portion 3e. Exactly this part, that is, heating chamber 3
A part of the air flow path from 5 to the outlet 38 is arranged substantially parallel to the operation panel 24 (strictly speaking, the bottom part of the operation panel case 24a accommodating the electric substrate of the operation panel 24). This air channel swings almost integrally with the outer tub 3,
In particular, it is expected that the water will swing significantly during the dehydration operation.
Even in that case, since the space between the air flow path and the operation panel case 24a is ensured by the above configuration, it is difficult to make contact, and even if it makes contact, it makes contact with a wide area in a plane,
It is possible to avoid contact at one point. Therefore, even if they come into contact with each other, the impact force is not concentrated at one point but dispersed, so that the damage is unlikely to occur.

Further, in the connecting portion of the blow-out pipe member 37 and the heating chamber 35, the blow-out pipe member 37 is formed with a recess 37a for engagement projecting outward, while at the end on the heating chamber 35 side. Has a convex portion 35a which engages with the concave portion 37a. Then, a gasket is inserted between the two to fit the convex portion 35a into the concave portion 37a, thereby fixing the both. With this configuration, both can be smoothly connected without reducing the cross-sectional area of the air flow path.
As a result, the air flow is not stopped at this connecting portion, and dust such as dust does not collect.

Further, another feature of the drum type washer / dryer of the present embodiment is the mounting structure of the heat exchanger 30 to the outer tub 3. As shown in FIG. 6, a groove 302 having a U-shaped cross section is formed at the edge of the heat exchanger cover 301 forming the heat exchanger 30,
303 is formed, and a ridge portion 3h is formed on the wall surface of the rear surface portion 3c of the outer tank 3 so as to correspond to the grooves 302 and 303. Further, on the outer peripheral side of the outer tank 3, the heat exchanger cover 3
A boss 3g into which a bolt 305 for fixing 01 to the outer tank 3 is screwed is provided upright rearward so as to be housed inside the groove 302. When the heat exchanger cover 301 is attached to the outer tub 3, the gasket 304 is fitted into the groove 303 on the inner peripheral side of the outer tub 3, and the groove 3 on the outer peripheral side of the outer tub 3.
Gasket 304 along the inside of boss 3g in 02
And the gasket 304 is pressed by the ridge 3h to enhance the airtightness between them. Since the boss 3g also serves as a guide for the gasket 304, the gasket 304
Since the boss 3g is easily fitted in the groove 303, the width of the heat exchanger cover 301 can be widened accordingly.

In the drum type washer / dryer of the present embodiment having the above construction, the operation during the drying operation will be described.
The drying operation is started in a state where the washing operation is completed and the wet laundry is stored in the drum 6. During the drying operation, the blower 34 is driven and cooling water is flown through the heat exchanger 30. Further, the drum 6 is rotationally driven at a relatively low speed such that the laundry is stirred.

The air sucked from the lower part of the blower chamber 33 by the blower 34 is sent to the heating chamber 35, heated by the heater 36, and then sent into the outer tank 3 through the blowout port 38, and further the opening 6a. Sent into the drum 6. The heated air touches the wet laundry in the drum 6 and promotes evaporation of water from the laundry. The air containing such a large amount of water passes through the water passage hole 6d of the body portion 6b of the drum 6 and the like to the outer tub 3 side, and further the air outlet opening 3 of the rear surface portion 3c of the outer tub 3 is formed.
Exit from 1 and enter heat exchanger 30.

The air containing a large amount of water vapor, which is taken out from the air outlet opening 31 to the outside of the outer tank 3, is rapidly cooled in the heat exchanger 30. As a result, the water vapor contained in the air condenses to water. Therefore, the air that has passed through the heat exchanger 30 becomes dry air, returns to the blower chamber 33, and is circulated so as to be heated by the heater 36 again. The water condensed in the heat exchanger 30 flows down the inner wall thereof and is discharged from a drain hole (not shown) together with the water generated by the condensation.

By the way, in the drum type washer / dryer having the above structure, in the manufacturing process, after the rotor unit 102 is fixed to the main shaft 7 and the stator 101 is fixed to the motor base 8, the drive unit is assembled, and then the motor base is assembled. 8 for outer tank 3
It is attached to the rear surface portion 3c. In the drive unit, it is desirable that the air gap between the magnet of the rotor 102 and the winding of the stator 101 has a substantially constant distance in the circumferential direction. Therefore, before mounting on the outer tub 3, it is inspected whether or not the distance between the gaps is a predetermined distance. For this inspection, in the drum type washer / dryer, an inspection hole is provided at a predetermined position of the motor base 8.

That is, as shown in FIG. 8, the inspection hole 8a is a position in the drive unit where the air gap 101b between the magnet 102d of the rotor 102 and the winding 101a of the stator 101 is directly seen. The motor base 8 is a member thicker than the rotor housing 102a and is made of metal having high rigidity. Therefore, even if the inspection hole 8a is enlarged to some extent, no strength problem occurs. Therefore, it is easy for the inspector to visually recognize the separation distance of the gap 101b at the time of inspection, and it is also easy to insert a distance measurement jig through the inspection hole 8a for measurement. Therefore, the inspection can be efficiently performed, and it is possible to significantly reduce the inspection error such that the rejected product is determined to be the accepted product or vice versa.

The above embodiment is an example of the present invention, and it is obvious that changes and modifications can be appropriately made within the scope of the present invention.

[Brief description of drawings]

FIG. 1 is a side vertical sectional view of a drum type washer / dryer according to an embodiment of the first to fourth inventions.

FIG. 2 is a front vertical cross-sectional view of a main part of the drum type washer / dryer of the present embodiment.

FIG. 3 is a side vertical cross-sectional view showing only the motor in an external view in FIG.

FIG. 4 is a side view showing an air flow path for drying in the drum type washer / dryer of the present embodiment.

FIG. 5 is a rear view showing an air flow path for drying in the drum type washer / dryer of this embodiment.

6 is a cross-sectional view taken along the line A-A ′ in FIG.

FIG. 7 is an enlarged view of part B in FIG.

FIG. 8 is a partial side sectional view (A) and a plan view (B) showing holes for inspecting a gap of a motor in the drum type washer / dryer of the present embodiment.

FIG. 9 is a diagram for explaining the operation of the rotation position detector in the drum type washer / dryer of the present embodiment.

FIG. 10 is a side vertical sectional view of a drum type washer / dryer according to another embodiment of the present invention.

[Explanation of symbols]

1 ... Outer box 1a ... front part 1b ... Clothing slot 1c ... top surface 1d ... curved surface 2 ... Door 3 ... Outer tank 3a ... opening 3b ... peripheral surface 3c ... rear part 3d ... bulge 3e ... Inclined part 3f ... Blowout port mounting part 3g ... boss 3h ... ridge 5 ... Inlet packing 5a ... edge portion 6 ... drum 6a ... opening 6b ... Body 6c ... rear part 7 ... Spindle 8 ... Motor stand 8a ... Inspection hole 9 ... Bearing 10 ... Motor 101 ... Stator 101a ... Winding 101b ... void 102 ... rotor 102a ... rotor housing 102b ... Light passage hole 102c ... Rotation reference position hole 102d ... Magnet 102e ... collar part 102f ... notch 24 ... Operation panel 24a ... Operation panel case 25 ... Detector holder 251 ... Light emitting unit 252 ... Light receiving part 30 ... Heat exchanger 301 ... Heat exchanger cover 302, 303 ... groove 304 ... Gasket 305 ... bolt 31 ... Air outlet opening 32 ... Circulating air duct 33 ... Blower room 34 ... Blower 35 ... Heating chamber 36 ... Heater 37 ... Blow-off pipe member 38 ... outlet

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoshi Nakamura             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. (72) Inventor Harumi Takeuchi             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. (72) Inventor Junhisa Funada             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. (72) Inventor Minoru Yoshida             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. F term (reference) 3B155 AA16 BA04 BA17 BB04 BB15                       BB18 BB19 CA02 CB07 CB49                       CB52 CB53 CB55 DB12 HB10                       JA03 KA33 KB11 KB14 LA03                       MA01 MA02 MA07

Claims (6)

[Claims] 1. An outer box, an outer tub disposed in the outer box in a state where a peripheral surface is substantially cylindrical and an axis of which extends in a front-rear direction, and a corner at a front upper portion of the outer box. In a drum type washer / dryer provided with an operating portion arranged so as to be inclined obliquely upward, a corner between the peripheral surface of the outer tub and the front end surface is provided inside the operating portion. An air channel for drying, which is formed in an inclined shape in accordance with the operation portion and which is connected to a front end surface of the outer tank from above the outer tank, is formed at a corner portion of the outer tank. The drum type washer / dryer is characterized in that the drum type washer / dryer is arranged so as to be substantially parallel to the operating portion along the inclined shape of the. 2. The drum type washer / dryer according to claim 1, wherein an air flow path is provided in a bent shape near the corner of the outer tub. 3. A flow path cover is attached to an outer wall surface of an outer tank in which a drum is rotatably mounted, and an air flow path for drying is formed in a space surrounded by the flow path cover and the outer wall surface of the outer tank. In the drum type washer / dryer, a groove having a substantially U-shaped cross section is formed at the end of the flow path cover that comes into contact with the outer tub, while the outer wall of the outer tub protrudes into the groove. A plurality of screw-threaded bosses are provided upright at a position to be formed, and a ridge is formed along the groove at a position sandwiched between the boss and one wall surface of the groove, and one of the boss and the groove is formed. A drum is characterized in that an elastic member for sealing is fitted between it and the wall surface of the drum, and the contact portion between the flow path cover and the outer tank is sealed by pressing the elastic member by the ridge. Type washer / dryer. 4. A drum, which is rotatable about a horizontal or inclined main shaft, is disposed in an outer tank, and a stator fixed to a motor base mounted outside the outer tank and the stator are surrounded by the stator. A drum type washer / dryer in which the drum is rotatably driven via the main shaft by a motor composed of a rotor fixed to the main shaft, having a rotational position detecting means for detecting a rotational position of the drum. The detection means includes a light passage portion formed in the rotor housing of the rotor around the main shaft at predetermined angular intervals, and a light emitting portion and a light receiving portion fixed to the motor base so as to face each other with the light passage portion interposed therebetween. And a drum type washer / dryer. 5. The drum type washer / dryer according to claim 4, wherein at least one light passing portion has a size different from that of the other light passing portions in one rotation. 6. A drum fixed around a horizontal or inclined main shaft is disposed in an outer tank, and a stator fixed to a motor table mounted outside the outer tank and the stator are surrounded by the stator. A drum type washer / dryer in which the drum is rotatably driven via the main shaft by a motor composed of a rotor fixed to the main shaft, wherein a motor between the magnet of the rotor and a winding of the stator is located in the motor base. A drum type washer / dryer characterized in that an opening is formed at a position through which a void is seen.