KR100655019B1 - Drum-type washing machine - Google Patents

Abstract

The present invention relates to a drum-type laundry dryer, it is possible to increase the amount of air refluxed into the drum without causing the intake of water injected into the duct, it is characterized in that the drying time can be shortened.

The duct 20 is installed in the circumferential direction of the back surface 7a of the water tank 7 over the length of about half or more, and the duct 20 is further provided in the circumferential direction of the back surface 7a of the water tank 7. Beyond the vertical centerline of 7a), the air inlet is located on one side and the air outlet is on the other side. Therefore, the duct 20 can be lengthened and the warpage can be increased, and even if the circulating air volume of the air in the drum is increased by the blower 29 in the above state, the suction of water injected into the duct 20 is not caused. The amount of circulating air in the drum can be increased as desired, and the drying time can be shortened as desired.

Description

Drum-type laundry dryer {DRUM-TYPE WASHING MACHINE}

1 is a rear view showing the main part of a first embodiment of the present invention;

2 is a broken left side view of the first embodiment of the present invention;

3 is a rear view showing the main part of the first embodiment of the present invention with the duct cover member removed;

4 is a rear perspective view showing the main parts of the first embodiment of the present invention;

5 is a graph showing the change of the internal cross-sectional area of the duct along the longitudinal direction,

FIG. 6 is a cross-sectional view showing an enlarged portion of FIG. 1 along an X-X ray, and FIG.

7 is a graph showing a change in the internal cross-sectional area along the longitudinal direction of the duct in the second embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

 1 housing 7 tank

7a: back of tank 9: drum

19: motor 20: duct

22a: bulge of the duct cover member

23: air inlet 24: air outlet

25: recess

25a: concave portion of the outer surface side

25b: convex portion of inner surface of duct

 26: hull 29: blower

 39: pouring device

The present invention relates to a drum-type washing machine.

Conventional drum type laundry dryer has a water tank installed inside the housing through an elastic support device, a drum is installed inside the water tank, and a duct is installed on the back of the water tank, Blower, water injector and heater are installed.

The drum is rotated by a driving device such as a motor to wash or dehydrate the laundry, and the air in the drum is circulated through the duct by a blower while rotating the drum. The water inside the duct is dehumidified by dehumidifying the air in the drum through the duct, and the dehumidified air is heated by a heater to reflux in the drum to dry the laundry.

In a conventional drum type laundry dryer, the duct is provided either linearly or curvedly on either the left half or the right half of the back of the water tank (see JP-A-4371198).

In the drum type laundry dryer, the drying time can be shortened by increasing the amount of air refluxed in the drum. However, in the conventional drum type laundry dryer, when the amount of air returned to the drum is increased, the water poured into the duct is sucked out. Since the amount of water remaining in the duct is small, the efficiency of heat exchange in contact with the air in the drum through the duct is low, so that dehumidification of the air in the drum is not effectively performed, and it takes a long time for drying.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and its object is not to cause aspiration of water injected into the duct, and to increase the amount of air refluxed into the drum, and consequently drum washing, which can shorten the drying time. To provide a dryer.

The drum laundry dryer of the present invention as one means for achieving the above object is a housing, a tank elastically supported and arranged in the housing, a drum arranged in the tank and rotationally driven by a drive device, the A duct provided on the rear surface of the water tank, a blower for circulating air in the drum through the duct, a water supply device for pouring water into the air flowing in the duct, and a heater for warming air flowing from the duct to the drum, It is characterized in that it is provided over the length of more than half of the circumference in the circumferential direction of the back of the tank.

In addition, the drum-type laundry dryer of the present invention as another means is a housing, a water tank elastically supported in the interior of the housing is arranged, a drum arranged in the inside of the water tank is rotated by a drive device, of the water tank A duct provided on a rear surface, a blower for circulating air in the drum through the duct, a water supply device for pouring water in the air flowing in the duct, and a heater for warming air flowing from the duct to the drum, It is characterized by being installed in the circumferential direction beyond the vertical center of the back surface on the back surface of the tank.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 6.

2 shows the overall configuration of a drum type laundry dryer. In FIG. 2, the laundry entrance 2 is installed at the center of the front part of the housing 1, which forms the outer box of the drum type laundry dryer, and the laundry entrance 2 is opened and closed by the door 3.

In the upper part of the front part of the housing 1, an operation panel 4 is provided. The operation mode of the drum type laundry dryer is set by the user operating the operation panel 4. An operation circuit unit 5 is arranged behind the operation panel 4. In response to the operation of the various operation switches on the operation panel 4, the operation circuit unit 5 executes an instruction to the required elements constituting the drum type laundry dryer. On the other hand, a control circuit unit 6 is arranged behind the lower part of the front part of the housing 1. The control circuit unit controls the operation of the required elements constituting the drum type laundry dryer.

The tank 7 is provided inside the housing 1. The water tank 7 has a cylindrical shape. The shaft is elastically supported by a pair of left and right elastic support devices 8 (only one in FIG. 2 is shown) in an inclined state in which the axis is raised (left in FIG. 2).

Inside the water tank 7, drums 9 are used, which store clothes and are used for washing, dewatering and drying. The drum 9 also has a cylindrical shape similar to that of the water tank 7, and is arranged in a state in which the shaft center is inclined so that the shaft center rises in the coaxial shape with the water tank 7. Since the drum 9 has functions as a washing tank, a dehydration tank, and a drying tank, a large number of small holes 10 serving as water passage holes and ventilation holes are perforated in almost the whole of the cylinder portion (only a part of which is shown in FIG. 2). In the inner circumferential portion of the tube portion, a plurality of buffles 11 for lifting laundry are provided (only one is shown in FIG. 2).

Both the water tank 7 and the drum 9 are provided with openings 12 and 13 for putting laundry into and out of the front part. The opening 12 of the bath 7 is connected to the laundry entrance 2 of the housing 1 by bellows 14, and the opening 13 of the drum 9 is the opening of the bath 7 12).

The lower part of the water tank 7 is equipped with the water flow machine 15 which communicates with the inside of the water tank 7. The heater 16 for washing water heating is arranged inside the water flowr 15. A drain hose 18 is connected to a portion forming the lowest part of the water flower 15 through a drain valve 17, whereby the water in the water tank 7 and further, the drum 9 This is discharged to the outside.

The motor 19 is arrange | positioned at the center part of the back surface 7a which is the cross-sectional part of one side (in this case, the back) of the axial direction of the water tank 7. The motor 19 is an outer rotor type in this embodiment. The stator 19a is attached to the back surface 7a of the water tank 7. As shown in FIG. On the other hand, the rotor (19b) of the rotary shaft (19c) is inserted into the rear surface (7a) of the water tank (7) is mounted in the center of the rear surface (9a) of the drum (9), the motor ( 19, the drum 9 is directly rotated.

The duct 20 is arrange | positioned at the back surface 7a of the water tank 7. As shown in FIG. As shown in FIG. 1, the duct 20 is provided at a portion extending from the right region of the motor 19 to the upper region when viewed from the rear of the motor 19.

In detail, the duct 20 has an arc-shaped flat base portion 21 extending from the right region to the upper region when viewed from the rear of the rear surface 7a of the water tank 7 as shown in FIG. 3. As shown in FIG. 4 connected to the base portion 21, the cover member 22 is formed in the shape of a flat box in an arc shape, and as shown in FIG.

As shown in FIG. 3, the base portion 21 of the duct 20 is provided with an air inlet 23 at one end of the lower side, and an air outlet 24 at the other end of the upper side. The air suction port 23 communicates with the inside of the water tank 7. The arc-shaped duct 20 is circumferentially in the circumferential direction of the rear surface 7a of the water tank 7 from the outermost end 23a of the air inlet 23 to the outermost end 24a of the air outlet 24. It is over half the length.

In addition, the air inlet 23 is positioned at one side (right side in FIG. 3) of the duct 20 beyond the vertical center line OO of the rear surface 7a in the circumferential direction of the rear surface 7a of the water tank 7, and the other The air outlet 24 is provided on the side (left side in FIG. 3). As a result, the length of the duct 20 becomes long and the curvature becomes large.

In the base portion 21 and the lid member 22, bulging portions 21a and 22a are formed at the intermediate portions of the air suction port 23 and the air discharge port 24, respectively. As a result, the duct formed by the duct 20 is the largest in the middle portion (upper right side view from the rear) of the air intake port 23 and the air outlet port 24.

As a result, the duct 20 is almost L-shaped. In addition, as shown in FIG. 4, the cover member 22 is formed so that its height H is lowered sequentially from the portion corresponding to the air intake 23 to the portion corresponding to the air outlet 24. In addition, the cross-sectional area inside the duct 20 is maximum at the bulging portion 22a. 5 shows the relationship between the position along the longitudinal direction of the dehumidifier 20 and the internal cross-sectional area. The cross-sectional area of the air intake port 23 portion is about 7500 mm 2, where the cross-sectional areas decrease in order toward the air outlet 24 direction (the horizontal axis right side of the graph of FIG. 5). In the bulging part 22a of the cover member 22, the cross-sectional area is about 13,500 mm <2> and is the largest. In the air outlet 24, the cross-sectional area is about 1,500 mm 2, which is the minimum.

The duct 20 is further provided with a recess 25. 1 and 4, the recess 25 is a portion close to the air intake port 23 of the duct 20, and the duct (from the central portion side of the rear surface 7a of the water tank 7 to the outer circumferential side). It is formed in the duct cover member 22 to exceed 20). In detail, as shown in FIG. 6, in the concave portion 25, the surface 25a of the duct outer surface side is concave, and the surface 25b of the duct inner surface side is convex.

A protective hose through which a lead wire for supplying electricity of the motor 19 or a hull 26 such as a tube is inserted into the concave portion 25. (protective hose) 27 is accommodated.

In the upper part of the duct 20, especially the upper surface part of the bulging part 22a of the said lid member 22, as shown in FIG. 1 and FIG. 4, the water inlet 28 is provided. The water supply into the duct 20 is performed through the water supply connection pipe 38 to be described later through the water supply valve 37 to be described later through the water supply port 28.

Water injected into the duct 20 impinges on the convex portion 25b and scatters in the duct 20.

In the upper part of the water tank 7, the blower 29 and the heater 30 are arrange | positioned. As shown in FIG. 2, the blower 29 is provided with a casing 31, a blower vane 32 arranged therein, and a motor installed at the outside of the casing 31 to rotate and drive the blower vane 32. It consists of 33. The inlet portion of the casing 31 communicates with the air outlet 24 of the duct 20.

The heater 30 similarly consists of a tubular case 34 and the heater 35 arrange | positioned inside it as shown in FIG. The inlet of the case 34 communicates with the outlet of the casing 31 of the blower 29.

The blower 29 and the heater 30 are one side (viewed from the rear from the center of the upper portion of the water tank 7 on the upper portion of the water tank 7 formed in a cylindrical shape arranged in an inclined state so as to rise above mentioned above). When the left side of the array is installed.

Moreover, as shown in FIG. 2, the air supply pipe 36 is arrange | positioned in the whole part on the water tank 7. As shown in FIG. One end of the air supply tube 36 communicates with the outlet of the case 34 of the heater 30, and the other end penetrates around the opening 12 of the water tank 7 in the opening 12. I'm in contact.

 As shown in FIG. 2, a water supply valve 37 is arranged at an upper rear side of the housing 1. The water supply of the water supplied from the water supply source, such as tap water, is switched by the water supply valve 37 to one of a plurality of water fountains. One water fountain is the water supply connection pipe 38 through the water hole 28 of the duct 20. The water supply device 39 which feeds the inside of the duct 20 by the said water supply valve 37, the said water supply connection pipe 38, and the said water supply port 28 is comprised.

The other one of the fountains is a water supply connection pipe 40. The tip end of the water supply connection pipe 40 is connected to a water supply case 41 which is arranged near the front of the upper portion of the water tank 7. The water supply case 41 receives the water sent from the water supply valve 37 through the water supply connection pipe 40, and then supplies the water into the water tank 7.

In addition, the water supply valve 37 and the drain valve 17 are both opened and closed by an electric driving force such as an electromagnet or a motor.

Next, the operation of the first embodiment will be described.

When washing, the user opens the door (3), puts the laundry (clothing) into the drum (9) from the laundry entrance (2), closes the door, and operates the operation switch (operation switch) of the operation panel (4). It is put in and the driving of the selected washing course is started.

When the operation is started, the selected washing course proceeds under control by the control circuit unit 5. Initially, the washing process enters and the water supply valve 37 is switched to the water supply connection pipe 40 side. For this reason, the water supplied from the water supply source such as the tap water is supplied into the water tank 7 through the water supply case 41 from the water supply connection pipe 40. In addition, the detergent is put into the water supply case 41 in advance, and the detergent is supplied into the water tank 7 (in the drum 9) together with the above-mentioned water supply.

In the main water, the storage level in the water tank 7 (in the drum 9) is detected by a water level detector (not shown). When the reservoir water level in the water tank 7 reaches the predetermined water level, the water supply valve 37 is closed, and the water supply into the water tank 7 ends.

Next, the motor 19 is started. As a result, the drum 9 is rotated, and the laundry contained therein is stirred and washed. In addition, the rotation direction of the drum 9 at this time is repeatedly switched in forward and reverse directions.

Thereafter, the drain valve 17 is opened, and the water in the water tank 7 and thus the drum 9 is discharged from the drain valve 17 to the outside through the drain hose 18.

When the drainage of the water tank 7 is complete | finished, the drain valve 17 is closed.

Following the washing process, a rinsing process is performed. In the rinsing process, water is poured into the water tank 7 without washing laundry detergent, and the stirring operation of the drum 9 is performed in the same manner as the washing process.

After the rinsing process is finished, the dehydration process and the drying process are performed in sequence. In the dehydration process, the drum 9 is rotated at a high speed with the drain valve 17 opened, and the centrifugal force discharges the water of the laundry in the drum 9 to the small hole 10 of the drum 9.

In the drying process, the rotational direction of the drum 9 is repeatedly switched in both forward and reverse directions to operate the blower 29 while rotating at a low speed, thereby blowing air into the drum 9. For this reason, as shown by the arrow A in FIG. 2, the air in the drum 9 reaches the lower part of the water tank 7 from between the small hole 10 between the water tank 7 and the drum 9, and an air intake port. After passing through the duct 20 from the lower part 23 through the inside of the duct 20 from the lower part to the upper part, the air outlet 24 passes through the blower 29, the heater 30, and the water supply pipe 36 in order. It is refluxed into the drum 9 from the opening 12 of the water tank 7.

During the drying operation, the air refluxed into the drum 9 by the heater 30 is heated. In addition, during the drying operation, the water supply valve 37 is switched to the main water connecting pipe 38. For this reason, the water supplied from the water supply source, such as tap water, through the water supply valve 37 in the direction opposite to the flow of the circulation wind from the water supply port 28 into the duct 20 through the water supply connection pipe 38. Is injected. As a result, in the duct 20, the circulating air, which is still relatively hot, receives the main water and the saturation temperature is lowered and dehumidified. The dehumidified air is heated again in the heater 30 to be blown into the drum 9 and to dry the laundry in the drum 9.

As described above, the duct 20 has a long length and is greatly curved, so that even if the circulation amount of air in the drum 9 by the blower 29 is increased, the suction of the water injected into the dehumidifier 20 is not caused. do. As a result, the amount of circulation of air into the drum 9 can be increased as desired to shorten the drying time.

In addition, as described above, the internal cross-sectional area of the duct 20 is the largest at the middle of the air intake 23 and the air outlet 24, and the air flows in the drum 9 passing through the duct 20. Since it is delayed in the middle part thereof, the suction of water inside the duct 20 is not caused. Therefore, this also makes it possible to further increase the circulation amount of air in the drum 9 and to further shorten the drying time.

Moreover, since the blower 29 is arrange | positioned to one side from the center part of the water tank 7 upper part as mentioned above, the blower 29 is arrange | positioned in the part lower than the upper center part (normal part) of the water tank 7, The height can be kept low.

In addition, since the water injected into the duct 20 collides and scatters from the convex portion 25b of the concave portion 25b formed in the duct 20 to the inside of the duct as described above, the duct 20 The amount of contact with air through the inside increases, and the dehumidification efficiency is improved.

7 shows a second embodiment of the present invention. The second embodiment differs from the first embodiment described above (see Fig. 5) in the following points. That is, in the second embodiment, the inner cross-sectional area of the duct 20 is the largest on the air outlet 24 side. Specifically, the cross-sectional area inside the duct 20 is 12,000 mm 2 in the vicinity of the air intake port 23, which in turn becomes large, and the maximum value is about 13,500 mm 2 in the air outlet port 24.

As a result, in the second embodiment, the flow of air passing through the duct 20 is the slowest at the air discharge port 24 side. As a result, even in the second embodiment, the suction of the water injected into the duct 20 is not caused, and the amount of circulating air in the drum 9 can be increased to shorten the drying time.

In addition, this invention is not limited to the above-mentioned and shown in the figure, It can change suitably and can carry out within the range which does not deviate from the summary.

By the respective means, the length of the duct is increased, and the warpage is increased, so that even if the amount of air returned to the drum by the blower is increased, the suction of water injected into the duct is not caused. As a result, drying time is shortened.

Claims (6)

housing, A tank installed elastically supported inside the housing, A drum arranged in the tank and driven to rotate by a driving device, Ducts installed on the back of the tank, A blower for circulating air in the drum through the duct, Plunger device for pouring in the air flowing in the duct and A heater for warming air flowing from the duct to the drum, The said duct is provided in the circumferential direction of the back surface of the said tank over the length more than half of the drum type laundry dryer characterized by the above-mentioned. housing, A tank installed elastically supported inside the housing, A drum arranged in the tank and driven to rotate by a driving device, Ducts installed on the back of the tank, A blower for circulating air in the drum through the duct, Plunger device for pouring in the air flowing in the duct and A heater for warming air flowing from the duct to the drum, And the duct is installed in the circumferential direction on the rear surface of the water tank beyond the vertical center of the rear surface. The method according to claim 1 or 2, And the duct is configured such that its internal cross-sectional area is largest in the longitudinal middle part. The method according to claim 1 or 2, The duct is a drum type laundry dryer, characterized in that the inner cross-sectional area is configured to be the largest on the air outlet side. The method according to claim 1 or 2, The water tank is arranged in an inclined arrangement so that the axis is up front, The blower is a drum-type laundry dryer, characterized in that arranged in one side from the top of the water tank to the side. The method according to claim 1 or 2, A concave portion having an outer surface side is formed in the duct so that the hull is accommodated in the outer surface side concave portion of the concave portion, and water injected into the duct from the convex portion protruding toward the inner surface of the duct collides and splashes. Drum-type laundry dryer, characterized in that configured.

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