TWI359888B - - Google Patents

Description

1359888 IX. Description of the Invention [Technical Field of the Invention] The present invention relates to a laundry dryer that has a laundry or a laundry dryer. [Prior Art] The drying of the laundry dryer φ from the laundry to the drying operation is performed by blowing a fan and a heat source to blow the air into the washing tank to raise the temperature of the laundry. Evaporate and drain the evaporated water out of the machine. The method of removing the water may be: directly discharging the water to the laundry (should be supplied with new air frequently), and dehumidifying the dew condensation and removing it (to make the same household use, Most use dehumidification methods that do not discharge water into the laundry room. • There are several requirements for the washer-dryer: (1) Dry B consumes less power, and (3) Drys are better (clothes have less pleats) • Less damage. Among the items (1) and (2), the dryers are effectively dried by the drying conditions, the right amount or the temperature. The clothes machine, which makes the clothes in the washing tank rotate well, and evaporates from the clothes. Even there is a kind of laundry water cooling method as the dehumidification method, so that the average surface of the cooling water flows, and the high temperature and humidity are improved. The hot air hot-drying means is used to carry out the low-humidity air of the clothes, and the water-evaporating machine that will evaporate the clothes is discharged from the evaporating water to cool the gas cycle, and the dryer is set up in the temple. Short, (2) _ (4) There is a kind of laundry for the laundry. When controlling the air flow, there is also a kind of laundry to make the water effective for the dryer, and the efficiency of the wall is changed. Regarding item -4 - 1359888 (4), there is a washer-dryer with a low-temperature drying stroke that controls the temperature of the hot air so that the temperature of the laundry does not rise too high (controls the heater input). Regarding item (3), since the clothes may be creased due to entanglement or distortion during the drying process, there is a washing and drying machine which is not easy to cause the clothes to be entangled or twisted. [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. 346272 SUMMARY OF THE INVENTION [Problems to be Solved by the Invention] When the volume of the clothes dryer is too large, even if the amount of the clothes is too large, the clothes cannot be fully unfolded even if no entanglement or distortion occurs, so the clothes are directly Twisting is done in the state of twisting. For example, in the commercially available clothes dryer (the drum volume is 62L, 77L, and 99L), the photograph of the clothes (cotton pajama pants) when the clothes of 2 kg are to be dried is shown in Fig. 13. It can be known that the larger the drum volume, the less the pleats will be. Although it has been known for a long time that the larger the volume, the generation of creases can be reduced, but the household laundry dryer is limited by the area of the installation place or the transportation path (such as a corridor or a door) that is transported to the installation place. Therefore, the size of the washer-dryer is limited, so it is difficult to ensure a sufficient volume. Therefore, it is only possible to separate the clothes that are intended to be dry, from other general clothes, and to reduce the amount of clothes for drying. However, it is not practical to repeat the time-consuming drying operation and -6 - 1359888, so many people dry the clothes without using the dryer. SUMMARY OF THE INVENTION An object of the present invention is to provide a clothes dryer or a washer-dryer which can increase the drying effect without increasing the volume of the drum. [Means for Solving the Problems] In order to achieve the above object, the present invention is a dryer having a rotary drum for storing laundry, a motor for driving the rotary drum, and a casing for supporting the rotary drum, and performing a drying operation. a washing and drying machine characterized in that, in the drying operation, means for blowing air into the rotary drum is provided, and the means for blowing the air is provided with a spiral flow path for accommodating the impeller, and is provided with a distinction between the flow The partition (protrusion) of the road, the distance between the front end of the partition (protrusion) and the impeller is set to be larger than the narrowest distance between the spiral wall surface and the impeller. Advantageous Effects of Invention According to the present invention, a scroll-shaped flow path for accommodating an impeller is provided, and a partition plate (protrusion portion) for distinguishing the flow path is provided, and a front end of the partition plate (protrusion portion) and the impeller are provided. Since the distance is set to be larger than the narrowest distance between the wall surface of the spiral shape and the impeller, the noise corresponding to the frequency of the product of the number of revolutions of the blade noise and the number of blades can be reduced. According to the present invention, even if a high-speed wind is generated, the noise can be suppressed. Therefore, in addition to the problem of solving the noise, in the drying operation, the high-speed wind can be directly blown to the clothes, and the wind is made by the wind. The garment stretches and flattens the pleats of the 1359888 garment for less crease drying. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings, and Fig. 1 is an external view of a drum-type washer-dryer according to an embodiment of the present invention. Fig. 2 is a perspective view showing the internal structure, showing a part of the casing, and Fig. 3 is a view showing the internal structure, and the rear cover is removed. The fourth figure shows the inside. A side view of the structure, and Fig. 5 is a plan view showing the internal structure 'a part of the casing is cut away. 1 is a casing constituting the outer frame. The casing 1 is attached to the base 1h, and is composed of left and right side plates la, lb, a front cover lc, a rear cover Id, an upper cover 1 e, and a lower front cover 1 f. The left and right side panels 1 a, 1 b are combined with a U-shaped upper reinforcing material (not shown), a front reinforcing material (not shown), and a rear reinforcing material (not shown), and include a base lh. The box-shaped casing 1 is formed to have sufficient strength as a casing. 9 is the door, which will be placed in the center of the front cover lc, and is used to close the input port for taking out the clothes, and is supported by the hinge provided on the front reinforcing material in an openable and closable manner. By pressing the door open key 9d, the lock mechanism (not shown) is released to open the door, and by pressing the front cover 1c, the door can be locked and closed. The front reinforcing material has a circular opening that is concentric with the opening of the groove, which will be described later, for taking out the laundry. 6 is an operation panel provided at the center of the upper portion of the casing 1, and includes: an electric-8-1359888 source switch 39, operation switches 12, 13, and a display 14. The operation panel 6 is electrically connected to a control device 38 provided at a lower portion of the casing 1. 3 is a cylindrical laundry and dewatering tank (rotary drum) which can be rotatably supported, and has a plurality of through holes for water passage and ventilation at the outer peripheral wall and the bottom wall, and is provided at the front end surface for taking out the laundry The input opening 3a. On the outer side of the opening 3a, a fluid balancer 3c which is integral with the washing and dewatering tank 3 is provided. A plurality of raising mechanisms 3b extending in the axial direction are disposed on the inner side of the outer peripheral wall. When the washing and dewatering tank 3 is rotated during washing and drying, the laundry is lifted along the outer peripheral wall by the centrifugal force and the raising mechanism 3b. And because of gravity falling, so repeated actions. The central axis of rotation of the washing and dewatering tank 3 is inclined such that the horizontal or opening portion 3a becomes higher. 2 is a cylindrical outer groove, which is covered with a washing and dewatering tank 3 coaxially, and has an opening at the front, and a motor 4 is provided at the outer center of the rear end surface. The rotating shaft of the motor 4 penetrates the outer groove 2, and The laundry and dewatering tank 3 are combined. An outer tank cover 2d is provided in the front opening portion, and water can be stored in the outer tank. In the center of the front side of the outer tank cover 2d, there is provided an opening portion 2c for taking out the laundry. The opening portion 2c and the opening portion provided in the front reinforcing member 37 are connected by a rubber bellows 10, and the outer door 2 can be tightly closed by closing the door 9. A drain port 2b is provided at the lowermost portion of the bottom surface of the outer tub 2, and is in contact with the drain pipe 26. A drain valve (not shown) is provided in the middle of the drain pipe 26. By closing the drain valve and supplying water, water can be stored in the outer tank 2, and the drain valve can be opened to discharge the water in the outer tank 2 to the outside of the machine. The lower side of the outer tub 2 is supported by the suspension device 5 (consisting of a coil spring and a damping) fixed to the base 1 h. Further, the upper -9- 1359888 side of the outer tub 2 is supported by a supplement spring (not shown) attached to the upper reinforcing member to prevent the outer tub 2 from falling in the front-rear direction. The ninth is a lotion container provided on the left side of the upper portion of the casing 1, and is provided with a detergent tray 7 that can be pulled out from the front opening. When the lotion is loaded, the lottery tray 7 can be pulled out as shown by the two-point lock line in Fig. 1. The detergent container 19 is fixed to the upper reinforcing material of the casing 1. On the rear side of the lotion container 19, there are provided: water supply solenoid valve 16 6 'bath water supply Lipu 7 7 , water level sensor (not shown), etc., parts related to water supply. The upper cover 1 e is provided with: a water supply pipe connection port 16a from the faucet, and a water suction pipe connection port 17 7a of the remaining water of the bath. The lotion container 9 is connected to the outer tub 2, and the washing water can be supplied to the outer tub 2 by opening the water supply solenoid valve 16 or by operating the bath water supply pump 17. The 29 is a drying duct provided on the inner side of the back surface of the casing 1 in the longitudinal direction, and the lower portion of the duct is connected to the intake port 2a provided below the back surface of the outer tub 2 by a rubber bellows (snake tube) B29a. In the drying duct 29, a water-cooling dehumidifying mechanism (not shown) is incorporated in the water-cooling and dehumidifying mechanism from the water supply solenoid valve 16 to supply cooling water. The cooling water flows down the wall surface of the drying duct 29, enters the outer tank 2 from the suction port 2a, and is discharged from the drain port 2b. The upper portion of the drying duct 2 9 is in contact with the filter duct 27 provided on the right side of the upper portion of the casing 1 in the front-rear direction. An opening portion is formed in front of the filter duct 27, and a pull-out type dry filter 8 is inserted into the opening. The air entering from the drying duct 29 toward the filter duct 27 flows into the screen 8a of the drying filter 8 to remove the batt. Clean and dry filter -10- 1359888 When the device is 8, pull out the drying filter 8 and take out the mesh type filter 8 & Further, an opening is formed in the lower surface of the insertion portion of the drying filter 8 of the filter duct 27, and the opening is connected to the intake duct 33, and the other end of the intake duct 33 is connected to the intake port of the air blowing unit 28. The blower unit 28 is composed of a drive motor 28a, a fan impeller (not shown), and a fan case 28b. The heater 31 is housed in the fan casing 28b to heat the air from the fan impeller. The discharge port of the blown air φ unit 28 is in contact with the hot air duct 30. The hot air duct 30 is connected to the hot air blowing port 32 provided in the outer tank cover 2d by a rubber bellows (snake tube) A3 0a and a bellows joint 30b. In the present embodiment, the air blowing unit 28 is provided on the upper right side in the casing 1. Therefore, the hot air blowing port 32 is provided at a position obliquely upward rightward of the outer tank cover 2d so as to be in contact with the hot air blowing port 32. The distance is as short as possible. A temperature sensor (not shown) is provided at the drain port 2b, the intake port of the blower unit 28, and the discharge port. # The present invention is characterized in that a high-speed wind is directly blown against the clothes, and the wind is used to level the creases occurring in the clothes. For this reason, it is necessary to provide the air blowing unit 28 that generates the high speed wind, and the hot air blowing outlet 3 2 that blows the wind directly against the clothes. The necessary performance of the air supply unit will be described later. The hot air outlet 3 2 will be described in detail using Figs. 7 and 8. Fig. 7 is a front view of the outer tank cover 2d of the hot air outlet 32 installation portion, and Fig. 8 is a cross-sectional view of the hot air outlet 3 2 shown by the second lock line A-A of Fig. 7. The hot air blowing port 3 2 is provided from the front side of the outer tank cover 2d along the opening portions 2c -11 - 1359888. The flow paths 32b, 32c are formed inside. A bellows joint 30b is attached to the inlet of the hot air blowing port 32, and a nozzle 32d is formed at the outlet of the flow path 32c. In order to prevent the laundry from entering the gap between the washing and dewatering tank 3 and the outer tank cover 2d, the inner diameter of the opening 2c of the outer tank cover 2d and the inner diameter of the opening 3a of the washing and dewatering tank 3 are set to be substantially the same. Therefore, the outlet portion 32a of the hot air blowing port 32 is formed to fly outward from the inner peripheral surface of the opening portion 2c, and the nozzle 3 2d is opened toward the inside of the washing and dewatering tank 3. As a result, the hot air from the nozzle 32d can be directly blown to the laundry in the washing and dewatering tank 3. Further, once the amount of flying out of the outlet portion 32a is too large, the laundry is prevented from being turned over during washing or drying. Therefore, as shown in Fig. 7, the nozzle is formed into a flat slit shape to reduce the flying. The amount of the opening and the surface shape of the opening portion 2c and the outlet portion 32a are smoothly changed. Further, the flow path 32b and the flow path 32c are not caused to have unnecessary projections or flow directions in which the rapid change does not occur, and the flow path area gradually decreases toward the nozzle 32d. By doing so, the pressure loss or the fluid noise which occurs when the high-speed wind passes through the flow paths 32b, 32c can be made small. The flow of the wind during the drying operation is as follows. The air blowing unit 28 is operated, and when the heater 31 is energized, high-speed hot air is blown from the nozzle 3 2d into the washing and dewatering tank 3 (arrow 4 1 ) 'to the damp clothes, warm the clothes, and put The moisture of the clothes evaporates. The air that becomes hot and humid will flow from the through hole provided in the washing and dewatering tank 3 toward the outer tank 2' is sucked from the suction port 2a to the drying duct 29' and flows from the bottom to the inside in the drying duct 29 (arrow 42) ). On the wall surface of the drying duct 29, the cold -12-1359888 from the water-cooling dehumidification mechanism will drip, and the hot and humid air will be cooled and dehumidified into dry low-temperature air by entering the filter duct 27 by contacting with the cooling water. Arrow 43). The cotton dust is removed by the sieve 8a provided in the filter duct 27, enters the suction duct 33, and is sucked into the air blowing unit 28 (arrow 44). Then, the heater 31 is again heated, and the same cycle is blown into the washing and dewatering tank 3. Fig. 9 is an example of the results of investigations of the wind speed of the nozzle 32d and the state of completion of the laundry after the drying operation. The wind speed and the air volume are adjusted by changing the number of revolutions of the motor 28a and the area of the nozzle 32d. Further, the wind speed is calculated from the result of measuring the flow pressure characteristics of the blower unit 28. The flow pressure characteristics were measured using the apparatus shown in Fig. 10. An orifice is formed in the suction port of the pressure equalizing box and the discharge port of the air blowing unit 28, and the flow rate and the air inlet of the air blowing unit 28 are measured while changing the diameter of the opening and the number of revolutions of the motor 28a. The pressure of the outlet, and the pressure characteristics of the flow. Then, the pressure of the intake port and the discharge port of the air blowing unit 28 when the air blowing unit 28 is attached to the washing and drying machine is measured, and the flow rate is obtained from the above-described flow pressure characteristics, and the flow rate is divided by the nozzle area. Oh, it is the wind speed. Experimental conditions As shown in the figure, the test machine was a drum-type washer-dryer having a laundry and dewatering tank having a diameter of 600 mm and a volume of 75 L, and the cloth amount was 2 kg. Although the evaluation was completed in various clothes, the results showed that the most obvious scars were cotton pyjamas. This evaluation is based on the visual evaluation of the fifth stage according to the visual observation, and the completion state of the functional evaluation 値 is shown in Fig. 11. When the nozzle 3 2d is set at the above position (the position on the right oblique upper side of the outer tank cover 2d) is the upper nozzle ', and the lower nozzle means the nozzle 32d - 13-

1359888 is placed at the lower portion of the outer tank cover 2d. From the direction in which the spray I is blown, it is set to be slightly toward the laundry. The result is the average 値 of the three evaluators. It can be seen from the figure: (A) As the wind speed is higher, the completion effect is higher; when the time is higher, the effect is worsened (from the same nozzle speed of the upper nozzle 1 (B), although the flow rate is relatively small, the flow rate is 1.5 m3/min. The difference of 1.7m3/min (C) is better than that of the upper nozzle at the same wind speed and flow rate. As a result, although the wind speed is larger, the flow rate of the effect is better. Therefore, it is not only a certain Consider the balance between the two parties to set it up. Specifically, you must also consider the current 値 (home wind unit 28 8 and heater 3 1 , motor 4, control 1 5 Α or less) or drying performance, and the wind follows瑁, installation to the washing and drying machine, etc., and when the functional evaluation is 4 or more, there is not much dissatisfaction on the drying roll. In this experimental machine 4 値 4 or more, in the case of the upper nozzle Lower, 1.5m3/min, the wind speed is 90m/s or more. However, the effect tends to deteriorate, so the maximum j is about 130m/s. In addition, the bottom of the water tank 3 is blown by the wind with a wind speed of 100~32d. Central wall: However, when the wind speed exceeds 5m" min data: The effect is better, the distance is not large.;, the lower nozzle's completion effect F, but there must be some kind of - square become large, it is best to say that 'not only the commercial power supply after the operation I, the device 3 8 The total of the flow path area of the conduit should be determined. The wind speed and flow rate are determined. If the clothing of I is directly worn, the flow rate must be set in order to allow the functional evaluation. If the wind speed is too high, the final wind speed can be controlled at 1 20 m/s. The result of the most -14-359888

good. In the case of the lower nozzle, the flow rate is set to 1.5 m3/min, and the wind speed is 60 m/s or more. However, if the wind speed is 80 m/s or more, the effect is almost the same, so the maximum wind speed is about 80 m/s. Just fine. The area of the nozzle for delivering the above-mentioned wind speed is 190 to 280 mm2' for the upper nozzle and 310 to 415 mm2 for the lower nozzle. Therefore, the air blowing unit 28 must have at least a function of allowing the flow rate to flow from the nozzle of the above area. In the present embodiment, the nozzle position is the upper nozzle, the nozzle area is 250 mm 2 (the slit having a width of 50 χ and a height of 5 mm), and the blower unit 28 has a fan impeller diameter of 140 mm' and a blade thickness of 7 mm, and is operated by rotating 16,000 times per minute. In this way, when the fan discharge pressure is about 7500 Pa (at an air temperature of 30 ° C), a flow rate of about 1.5 m 3 /min is obtained, and the wind speed is about 100 m/s. On the other hand, if it is a clothing that is not easy to smash, a result of a sensory evaluation of 値4 or more can be obtained at a temperature lower than the above-mentioned wind speed. However, since various clothes are usually dried at the same time, it is necessary to determine the clothes that are easy to smash. The wind speed is more appropriate. The reason for reducing the creping of clothes by blowing clothes with high-speed wind is explained using Fig. 12. Fig. 12(a) is a schematic view showing the high-speed wind 41 blown from the nozzle 32d when the clothes are blown. Here, it is shown that there are other clothes on the back of the clothes. When the wind blows the clothes, the force that is stretched by the wind (arrow (1)) and the direction of the flow after being blown to the clothes are changed, and the wind flows along the surface of the clothes, toward the left and right. The force of stretching (arrow (2))). The pleats of the clothes are stretched by the strength of the (1) and (2). When the amount of laundry in the washing and dewatering tank 3 is -15- 1359888, 'before the clothes that are directly blown into the wind, because there are many other clothes, it is not easy to flip freely, so it is mainly based on the strength of (1) The pleats are flattened. And when the amount of clothes is small, 'the clothes can be flipped freely, and the clothes blown to the wind will be pushed toward the direction of the wind', and will be fluttering, and the force of the wind (2) flowing along the surface of the clothes will The pleats are flattened. When the amount of laundry is small, since the clothes are stretched in the dry state and the creases are not easily generated, the strength of (1) is taken into consideration here.

The force F of (1) is as shown in Fig. 12(b). When the flow rate of the wind blown from the nozzle 32d is Q and the wind speed is V, the F system is proportional to the product of Q and V. Further, when the distance between the nozzle 32d and the laundry is X, the force F is inversely proportional to X proportional to V. However, when the distance between the nozzles 3 2d and the clothes is very close (the core area of the jet, in the case of a circular nozzle, it is about 6 times the diameter from the nozzle to the nozzle), F is independent of X but is formed with V. proportion. Therefore, in order to make F larger, it is possible to increase the flow rate Q or increase the wind speed V, or to make X smaller (to bring the clothes closer to the nozzle). The result of the completion shown in Fig. 8 can be explained here. In order to increase the flow rate Q, it is necessary to increase the number of revolutions of the fan of the blower unit 28 or to increase the outer diameter of the fan or the height of the blade. Further, it is preferable to increase the area of the duct through which the hot air passes, so that the pressure loss is reduced. In particular, when the water is cooled by water to dehumidify, if the flow rate of the air flowing through the drying duct 29 is too fast, the cooling water is blown off by the wind. When the cooling water reaches the sieve 8a or the heater 31, since the drying efficiency is drastically lowered, it is necessary to increase the flow passage area of the drying duct 29. Therefore, the flow rate of the duct or the air supply unit is also greatly increased by one -16 - 1359888 denier, and as the size of the casing 1 is increased, it becomes more difficult to set the washer-dryer in the home. On the other hand, in order to increase the wind speed V, the air blowing unit 28 can be used as a pressure type to make the nozzle area small. As the air blowing unit 28, when a general turbo fan is used, there is a method of increasing the diameter of the impeller by using a low number of revolutions, and a method of maintaining the small diameter of the fan impeller and increasing the number of revolutions. The advantage of installing the same housing as before. In the experimental results completed in Fig. 8, once the wind speed is too high, the completion state is deteriorated. This result cannot be explained above. As long as you observe the flipping of the clothes in the experiment, you can understand that if the wind speed is too high, the clothes will be entangled due to the wind. Therefore, this is the reason for the deterioration of the completion status. In order to reduce the distance X between the nozzle 32d and the laundry, the nozzle 32d may be provided as long as it is near the position where the laundry must pass during drying. Therefore, the position of the nozzle 32d may be set at a position where the lifting mechanism 3b raises the laundry, that is, on the lower side of the washing and dewatering tank 3 (the lower side of the outer tank cover 2d). By providing the nozzle on the lower side, as shown in Fig. 8, even if the wind speed is about 60 m/s, the completion effect is excellent, so that the air blowing unit 28 can be lowered as compared with the case where the nozzle position is on the upper side. The advantage of pressure or flow (which reduces the number of revolutions of the fan impeller). Further, once the nozzle is on the lower side, the direction in which the wind is blown and the direction of gravity become opposite. When the wind blows into the clothes, the clothes will not easily scatter due to their own weight. The effect of the -17-1359888 on the clothing will not be weakened, so it has the advantage of better completion. When the nozzle 32d is disposed on the lower side, the method of disposing the drying duct 29 or the blower unit 28 on the lower side of the outer tub 2 can be miniaturized. However, since the washing water at the time of washing is immersed from the nozzle 32d and flows into the air blowing unit 28, it is necessary to add a mechanism for preventing water from entering, such as a waterproof air blowing unit. In the present embodiment, since the nozzle 32 d is disposed at a position obliquely upward from the right of the outer tank cover 2d, there is no fear that the washing water will be immersed. At this time, it is necessary to appropriately control the number of revolutions of the washing and dewatering tank 3 so that the laundry is pushed up to the vicinity of the nozzle 32d, and the high-speed wind is blown to the laundry as much as possible. The clothes are pushed up by the centrifugal force of the rotation of the washing and dewatering tank 3 and the raising mechanism 3b. Therefore, the number of revolutions is optimum depending on the diameter of the washing and dewatering tank 3, and the larger the diameter, the lower the number of revolutions. However, there are also clothes that fall early due to gravity. In order to avoid the average distance between the nozzle and the laundry, which is larger than the distance when the nozzle is placed on the lower side, it is necessary to increase the wind speed at the nozzle outlet as shown in Fig. 8. Here, the blower unit 28 will be described in detail. Fig. 15 is a cross-sectional view of the air blowing unit 28. Fig. 16 is a plan view showing the state of the impeller in a state where the main fan casing is removed. Figure 17 is a plan view showing the state in which the fan cover is removed. Fig. 18 is a cross-sectional view showing the entrance and exit of the blade l〇lc of the impeller 101. Figure 19 is a cross-sectional view of the impeller. Figure 20 is a plan view of the impeller. Figure 21 is a plan view of the lower side panel. The blower unit 28 is composed of a motor 28a and a fan case 28b, which is constituted by a main fan case 28d in which the impeller 101 is housed, and a fan cover 28e. A bell-shaped opening 33a is provided in the center of the fan cover 28e. The bell-shaped opening 33a has a circular opening in the center, and has a portion having a curvature and a ring-shaped portion, and a ring of the impeller 101. The portion 10f and the annular portion of the bell mouth 33a are formed in an overlapping manner. At this time, the annular portion of the bell mouth 33a enters the inner side. The impeller 101 is composed of a main plate (a rear panel in the patent application range) fixed to the rotary shaft 102 of the motor 28a, a blade 101c, and a side plate having an opening at the center (in the patent application, there is a suction port) The front panel) is composed of 1 〇1 a. The main board 1 〇 1 b is held by the reinforcing plate 1 0 1 d and the reinforcing plate 1 〇 1 e, and is fastened by the caulking portion 1 1 1 a and the caulking portion 1 1 1 b. The caulking portion 1 1 1 a is spaced apart from the caulking portion 1 1 1 b, that is, receives the force from the blade side and the opposite vane side, and is fixed by riveting. The side plate 1 〇 1 a is provided with a portion almost parallel to the main plate 10b, and is bent in a direction opposite to the main plate 10b in the central portion to form a curved portion 101g and a ring portion of the suction port . The blade l lc is a shape that faces the direction of rotation of the impeller 101 and retreats from the inner diameter side toward the outer diameter side. Such blades are generally referred to as backward blades, and those using such blades are referred to as turbofans. The shape in which the blade advances in the direction of rotation is referred to as a forward blade, and the use of an impeller having such a blade shape is referred to as a multi-blade fan or a multi-blade fan. Each of the two sides of the blade 101c is provided with five protrusions (not shown), and can be inserted into the side plate 101a and the main plate 10b, corresponding to each of the 5-19 to 1359888 rectangular holes of the blade (not shown ), the force is applied from both sides to fix the protrusion. This method makes it possible to reduce the height at the time of riveting when performing 'ultrasonic waves' on one side. In the present embodiment, the blade llc is provided with eight leaves, and all of them are mounted on the main board 1 〇 1 b and the side plate 10 1 a, and then riveted. In the caulking portion, the innermost caulking portion 1 1 〇a does not touch the curved n-curve 1 〇 1 g of the side plate 1 0 1 a. Further, the front end of the blade 1 0 1 C does not touch the curved portion of the side plate 101a. In the impeller 101, the side plate 10a, the main plate 101b, and the blade 101c are made of metal, and in particular, aluminum is used. At this time, ultra-hard aluminum having a higher strength in aluminum is used. The reinforcing plate 1 0 1 d and the reinforcing plate 1 0 1 e are made of iron. In this case, stainless steel which is not easily corroded is used. When the two reinforcing plates 101d and 101e are different in outer diameter, when the external force is applied, the stress concentration can be alleviated, and the internal space formed by the main fan casing 28d and the fan cover 28c is formed. A spiral flow path. The scroll-shaped flow path is a scroll tube 106, and the operation of recovering is performed as a static pressure while slowing down the flow rate of the airflow discharged from the impeller 101. The outlet of the scroll 106 has a convex portion 107, a convex portion 107a is provided on the side of the fan cover 28c, and a convex portion 107c, a slit 107d, and a convex portion 107e are provided on the side of the main fan casing 28d. A heater 3 is disposed downstream of the partitioning plate projection 107, and a discharge port 1 1 5 » 'main fan casing 28d and a motor 28a are disposed downstream of the partitioning plate convex portion 107, and the central portion thereof is anti-vibration rubber. Supported by 105, there is no display in the drawing, but the motor end bracket 28 8b of the motor 28a + and the main fan casing are also supported by four anti-vibration rubbers. -20- 1359888 In addition, the anti-vibration rubber 105 has a gas-tight function that prevents the air from flowing out of the independent fan casing 2 8 d.

Next, the explanation will be given for explaining the flow of the air in the air blowing unit 28. Once the motor 28a begins to rotate, the impeller ιοί will rotate, and as such, air will pass through the filter conduit 27, from the suction passage 33b' in the intake conduit 33 as indicated by arrow 117, from the bell mouth 33a The impeller 101 flows in. As indicated by arrow 116, the high velocity air boosted by the impeller is discharged from the entire circumference of the impeller (arrow 118), and is also decelerated as the scroll 106 is collected, as indicated by arrow 119. In the normal manner, the gap between the convex portion 107 and the fan case 28a flows downstream, and after being heated by the heater 31, it is discharged from the air blowing unit 28 by the discharge port 115. The outer diameter of the impeller 101 is 140 mm, and the impeller is rotated at 1 6000 r/min. Under this condition, the peripheral speed of the impeller 1 〇 1 is about 1 17 m/s, and the output of the air supply unit is about 200 W. In this way, in order to obtain a large output and a pressure rise, the strength must be ensured, so the impeller 1 0 1 must be made of metal, especially aluminum. Since the heat transfer property of aluminum is good, heat generated in the motor 2Sa is received by the impeller 1〇1 by the rotary shaft 102, and is released from the impeller 101 into the air. In this way, by cooling the motor 28a, the waste heat of the motor 28a is also released into the air, so that the temperature can be increased without increasing the humidity of the drying system, and even if the blade llc is thinned The strength can also be ensured, so that even if the number of blades is increased, a wide flow path can be maintained between the blades, so that the frictional resistance of the airflow in the impeller 1 〇 1 can be reduced. -21 - 1359888 Even because the ductility of aluminum is good, the bent portion l lg and the annular portion 101f can be formed in the side plate l 〇 la, and because it can be parallel with the annular portion of the bell mouth 33a, and Since the distance from the bell mouth 33a is less susceptible to the airflow flowing through the gaps of the two annular portions, the turbulent flow is less likely to enter between the blades, and the noise can be reduced while reducing the fluid resistance. . Further, although the gap between the two annular portions is 2 mm, since the size of the gap can be fixed, when the impeller moves toward the fan casing 28b, the amount of the air leakage is less likely to change. The intake duct 33 receives the air flowing in from the drying duct 29 from the left side of Fig. 15, so that the airflow when it reaches the bell mouth 3 3 a is easily deflected. Since the front end of the blade 101c of the impeller 101 is located at the rear side of the curved portion 101g, it is less susceptible to the flow of the bias current, and therefore, while preventing the increase in fluid resistance, the noise generated by the turbulent flow can be suppressed. Reduce noise. Further, since the air leakage flow from the bell mouth 33a and the side plate 10a flows into the blade 1 0 1 c after adhering to the wall surface, it has an effect of controlling the increase in fluid resistance caused by the turbulent flow. Even because the blade 101c is in planar contact with the side plate 10 1 a, a gap is less likely to occur between the blade 1 〇 1 c and the side plate 10 〇 la, so that low performance due to air leakage is less likely to occur. situation. The outlet of the vane 101c of the impeller 101 is cut into a triangular shape, so that the flow of air from the impeller 101 does not miss the timing of flowing into the convex portion 107, because the airflow from the periodic velocity variation of the impeller 101 does not miss the inflow convexity. The timing of the part 1 〇7, therefore, it is possible to reduce the frequency noise of the integer multiple of the product of the number of blades of the impeller -22 - 1359888 and the number of revolutions, that is, to reduce the blade noise. Further, as long as the notch on the triangle is provided, when the impeller 10 1 is assembled, since the notch side is the outer side, it is extremely easy to judge, and assembly can be made simpler. Here, the notch is triangular, but it may be inclined. In addition, 'the triangle-shaped notch can be replaced by a triangular-shaped shape. The effect is almost unchanged. 'As long as the shape is sharp, even if the number of revolutions is the same', many jobs can be performed to increase the air volume and pressure. effect. Even the same effect can be obtained by making the export data. In this way, the above effect can be obtained by making the shape of the outlet of the blade different from the inlet side. The scroll tube 106 used herein has an enlarged angle of 4 degrees, but a larger angle of enlargement can be used if there is space in the size. However, since the size of the blower unit is limited, the scroll can not be too large, so the distance between the impeller and the impeller where the scroll is curled is set to 9 mm, and a wrap-like wall surface is formed, from the position where the curl is started. a direction opposite to the direction of the wrap, forming a linear wall surface, and forming a connection with the convex portion 107, the distance between the front end of the convex portion and the impeller 101 is about 15 mm, compared to the wall surface of the scroll tube and the impeller The narrowest starting curl position between the distances is such that the distance between the front end of the projection and the impeller is large. As a result, the blade noise can be greatly suppressed. Once the distance from the impeller at the front end of the convex portion becomes larger, the blade noise can be further reduced, but the performance may start to decrease. Moreover, the almost straight wall surface faces downward from the point where the scroll ends -23- 1359888

The side of the swim side continues from the end point, and the angle at which the convex portion is seen is the angle at which the curl starts. The angle ' is usually about 60 to 70 degrees, but in the present embodiment, it is about 45 degrees. This angle is determined by experimentally changing the angle at which the curl starts, investigating the fluid properties, and determining the position with higher efficiency near the angle. Once the flow velocity distribution from the end of the wrap to the tip of the projection is connected to the straight line, an almost uniform flow velocity distribution can be measured. In the drying system, the system is a system in which the duct is connected to the drum, and since the flow path is sharply expanded downstream of the convex portion, the angle at which the curl starts is extremely suitable. This downstream portion is directed from the convex portion 107 toward the heater 31, and the area is sharply increased. The rear surface of the convex portion is expanded in the vertical direction of Fig. 17 in addition to the downward direction of Fig. 16. As the area increases sharply, the airflow is forced to decelerate sharply. In particular, such a sharp increase in the area causes a full peeling of the airflow and a large fluid resistance, so that the pressure rise of the fan is greatly reduced. In the present embodiment, as shown in Fig. 17, the side of the main fan casing 28d is formed to be almost planar from the position of the convex portion toward the downstream, and the fan cover 28 e side is gradually curved toward the heater 3 3 side. . Flows toward the front of the heater 31. As a result, the distance between the main fan casing 28d and the fan cover 28e, in other words, does not increase the axial distance of the motor 28a (or the impeller) linearly, but from the convex portion, As it goes downstream, the rate of change gradually increases, making the deceleration rate at a faster speed smaller, and starting to decelerate rapidly from where the speed has dropped to some extent. In this way, at the beginning of the deceleration, the stripping of the airflow is controlled, the performance is degraded, and the speed of the airflow -24- 1359888 becomes smaller, and the airflow can be sharply controlled in a place where the moving energy of the airflow is small, and the airflow can be greatly controlled. The resistance increases. In addition, because of the uniformity of the airflow velocity when entering the heater, it is possible to prevent the addition, and by making the peeling region small, there is no adverse effect on the flow toward the i, so the effect of controlling the noise of the blade is controlled. . In addition, when it is changed to a straight line, although 2F can be obtained, but it can also be made into a curved surface structure, it can obtain the effect of a strong intensity, and in order to control the increase of blade noise, the air of the convex part blue 107d can be made. Circulation. With the slit 107d, the pressure fluctuation of π 1 07 is extremely high for controlling the blade noise. In the present embodiment, the width of the slit is 3 mm, the width is 5 mm, the width of the slit becomes large, or the depth becomes deep. Although the leaf control effect can be improved, the relatively large portion of the same seam 107d which is relatively low in pressure rise and low is not in the position where the impeller 101 is not hit, and the airflow flowing from the impeller 1 〇1 is not Will pass directly, so the pressure will rise and will not fall, so the noise on the blade is greater. Further, the slits are not limited to one, and the two may be slightly increased by the i-force, but the axial distance Hs of the vane-shaped scroll 106 may be greatly reduced, which is not the same for the spiral f-direction. It starts from the beginning of the curl and has a large gradient. The portion where the axial direction becomes larger is not the leaf auxiliary, but the shaft speed from the outer circumference of the impeller to the inner portion. Therefore [can be improved into the heating of the device: the gas side of the swimming side can be obtained: face part, fruit. : Set the effect of "smoothing convex part: η. If fine: piece noise". The control effect of the thin side plate 1 〇1 a slit l〇7d, although the curling distance of the pressure is The outer peripheral portion has a distance of -25 to 1359888. In the present embodiment, the axial direction distance is gradually increased until it reaches the concave portion of the bell mouth 33a. In order to gradually increase the axial direction distance Hs, the fan cover 28e The side surface becomes a flat surface. As a result, the airflow from the impeller is multiplied by the circumferential direction, and as the flow rate of the flowing air becomes larger, the flow area is expanded to a flow area larger than the enlarged angle. Therefore, the deceleration of the air flow can be promoted. Further, although the height can be inconsistent in the circumferential direction, the position is preferably at the position where the curl of the scroll starts. In particular, when 1 is set at the beginning of the curling At the position, the blade noise is reduced, and by increasing the axial direction distance Hs, the efficiency can be increased by about 2%, and the blade noise is not particularly bad. The range of the distance from the axial direction Hs In the shaft The starting distance is less than the outer diameter of the impeller. If it is larger than the outer diameter of the impeller, the efficiency cannot be improved. Compared with the multi-blade fan, the airflow from the impeller 1 〇1 can be more used. Since the speed is low, even a small scroll tube (a scroll tube with a small expansion angle) can reduce the loss because the amount of deceleration is small, so even if there is no extra space, the washer dryer can not obtain a large scroll tube. It can still have higher performance, and because the width of the impeller can also be reduced, space can be saved. In addition, since the airflow flows through the width of the entire blade 1 0 1 c (up and down direction of Fig. 18), it is not easy Since the air is trapped due to the airflow peeling, it has the advantage of preventing the lint from remaining and adhering to the blade 10 1 c. In order to satisfy the fan discharge pressure and the air volume, the number of revolutions of the impeller is 10,000 to 20,000 r/min. The outer diameter of the impeller is preferably between 120mm and 180mm -26- 1359888.

Figure 6 is a block diagram of the control device 38 of the washer-dryer. 50 is a microcomputer connected to the operation key input circuit 5 1 or the water level sensor 34 and the temperature sensor 52 connected to each of the switches 12, 13, 13a, and receives the user's button operation or in the washing step and the drying step. Various information signals in the middle. The output from the microcomputer 50 is connected to the drive circuit 54, and is connected to the water supply solenoid valve 16, the drain valve 25, the motor 4, the blower fan 28, the heater 31, and the like, and controls the switching, turning, or energization. Further, it is connected to the seven-segment LED display 14 or the light-emitting diode 56 or the buzzer 57 for informing the user of the operating state of the washing machine. The microcomputer 50 described above is started by pressing the power switch 3 9, and the power is turned on, and the basic control processing program for the laundry and drying clothes is executed as shown in Fig. 14. Step S 1 0 1 φ The state confirmation and initial setting of the washer-dryer are performed. • Step S 1 02 • The display 14 of the operation panel 6 is turned on, and the laundry/drying stroke is set in accordance with an instruction input from the operation button switch 13. In the state where no input is indicated, it is automatically set to the standard laundry/drying stroke, or the previous laundry/drying stroke. For example, when the input operation of the ammonium button switch 13a is instructed, the high-order completion stroke of the clothes is set. Step S 1 0 3 -27- !359888 Monitors the instruction input from the start switch 12 of the operation panel 6, and processes them separately. Step S104 performs laundry. The washing is carried out in the order of washing, intermediate dehydration, washing, and final dewatering, but the detailed description is omitted because it is the same as a general drum type washer-dryer. Step S 1 0 5 Confirm whether there is a set laundry dryer stroke and then treat it separately. When only the laundry stroke is set, the operation is stopped. Step S 1 0 6 When the laundry dryer stroke is set, hot air dehydration is performed. The hot air dehydration system rotates at a low speed to operate the blower unit, energizes the heater 31 (strong mode), and blows hot air into the washing and dewatering tank 3 to raise the temperature of the laundry. At the same time, the washing and dewatering tank 3 is rotated at a high speed to effectively dehydrate the water from the warm clothes (if the temperature rises, the viscosity of the water becomes low, so that the water can be effectively dehydrated). In the present embodiment, the number of revolutions of the blower unit 28 is set to 111,000 times per minute. This is in order not to exceed the permissible current 値 (1 5 A). Step S107 performs the drying operation 1. The air blowing unit 28 rotates at a low speed, the heater 31 -28- 1359888 operates in a strong mode, and the washing and dewatering tank 3 reverses the forward and reverse rotations, and changes the position of the laundry in the washing and dewatering tank 3 while blowing high temperature hot air to the clothes. . The temperature of the entire laundry is raised, and the moisture of the laundry is evaporated. Step S108 It is confirmed whether or not the high-order completion stroke is set, and then separately processed. When φ is a stroke other than the high-order completion stroke, only the drying of step S1 07 is completed. Step S1 0 9 It is confirmed whether or not a predetermined time has elapsed since the drying, and then separately processed. The specified time is set to the dryness of the laundry (=the quality of the dry cloth/the quality of the wet cloth) before reaching 0.9. The drying course is carried out as follows. At the initial stage of drying, in order to increase the temperature of the laundry during the warm-up period in which the temperature of the laundry is increased, it is necessary to give the most heat to the clothes as much as possible. During the warm-up period, the evaporation of the moisture of the laundry is small. • As the temperature of the clothes rises, the evaporation of moisture in the clothes increases. Because of the heat of vaporization, the temperature rise of the clothes becomes slower. Soon, the heating and the heat of vaporization are balanced, and the temperature of the clothes is substantially fixed (constant rate) dry). Once the moisture content of the clothes is reduced, the heat of vaporization will also decrease, and the temperature of the clothes will start to rise again. Once the moisture of the clothes is gone, it will become about the same temperature as the hot air. At this point, the drying operation has been completed (minus) The rate is dry). The temperature of the clothes -29 - 1359888 starts to rise, which means when the dryness is close to 0.9. When the clothes contain more water, even if the clothes are creased, they can be easily smoothed (as long as they are blown or vaporized, so that the creased clothes contain water, which can be removed). However, when the clothes are smashed and the dryness is 0.9 or more, the creases become fixed. It is almost impossible to remove the creases once fixed in the future itinerary. Therefore, before the dryness reaches 〇. 9, the pleats must be flattened. When the actual drying is carried out, since the clothes of different materials or thickness are simultaneously dried, the time when the dryness reaches 0.9 will vary depending on the clothes. Therefore, in the present embodiment, the time is set to the time when the dryness of the thin cotton garment which is most likely to be smashed becomes about 0.8 to 0.85. In addition, the time when the dryness becomes 0 · 9 will vary depending on the amount of cloth, so it is of course necessary to set the time according to the amount of cloth. Step S 1 1 0 The drying operation 2 is performed. The forward and reverse rotation of the laundry and dewatering tank 3 is continued, and the air blowing unit 28 is rotated at a high speed to set the heater 31 to a weak mode, and the high-speed wind is blown to the laundry in the washing and dewatering tank 3, and the crease is flattened while being dried. When the air blowing unit 28 is rotated at a high speed, the heater 31 is set to the weak mode so as not to exceed the allowable current 値. In the present embodiment, the number of revolutions of the blower unit 28 is set to 16,000 times per minute. The input current of the air supply unit 28 is about 7 A every 16,000 revolutions, the heater 3 1 is about 6 A, and the motor 4 and the control unit 38 are about 1 A. In this step, since the heater 31 is in a weak mode, it is lower than the step -30 - 1359888 S107. In particular, when the dryness exceeds 〇·9, although the temperature of the laundry rises and gradually approaches the hot air temperature, since the hot air temperature is low, the temperature of the laundry can be controlled to a lower temperature, so that the damage to the laundry is reduced. advantage. The drying operation is performed while monitoring the hot air or cooling water drainage temperature by a temperature sensor, and is completed when the temperature change ratio reaches a predetermined level. Further, the drying operation 1 of step S107 may not be performed, and the drying operation 2 of step S110 may be directly performed from the beginning. As the amount of cloth becomes larger, the clothes inside and the nearer clothes in the washing and dewatering tank 3 are not easily replaced, and the clothes near the hot air are quickly dried. Therefore, by operating the air blowing unit 38 at a high speed from the beginning, even if the drying speed is not uniform, it is possible to prevent the relatively quick-drying clothes from creping. As described above, according to the above embodiment, since the high-speed wind is directly blown to the clothes during the drying operation, the clothes can be stretched by the wind to smooth the pleats of the clothes, so that the drying effect which is not easy to smash can be obtained. . Further, when the nozzle for blowing the high-speed wind is provided on the upper side of the rotary drum, the air volume can be effectively improved by making the air volume about 1.5 m ^ 3 per minute and the wind speed being 90 m to 130 m per second.绉 pleats. Further, when the nozzle for blowing the high-speed wind is disposed on the lower side of the rotary drum, the air volume is about 1.5 m ^ 3 per minute and the wind speed is 60 m to 100 m per second, thereby effectively smoothing The pleats of the clothes. By blowing the air from the lower side of the clothes, the clothes that are dropped will increase the force acting on the clothes due to their own weight, so that even at low wind speeds, the pleats can be smoothed out at -31 - 1359888. In particular, since the wind is blown from the lower side to the fallen clothes, the clothes are unfolded like a parachute, so that it has a greater effect on flattening the pleats. In addition, by using the impeller as part of the air supply means, the impeller is made of metal, which can cause high-speed wind, and can achieve space reduction and noise reduction. The impeller has a suction port. The front panel and the rear panel 'provide a blade between the front panel and the rear panel, and the blade retreats toward the outer diameter side from the center side of the center of the φ direction toward the outer side. 》 • Brief Description of Drawings Fig. 1 is an external view of the drum type washer-dryer of the present invention. Fig. 2 is a perspective view showing a part of the casing of the drum type washing machine of the present invention, showing the internal structure. Fig. 3 is a rear view showing the inner structure of the drum type washing machine of the present invention. Fig. 4 is a side view showing the internal structure of the drum type washing machine of the present invention. Fig. 5 is a cross-sectional view showing the upper portion of the casing of the drum type washing machine of the present invention. Figure 6 is a block diagram of the control system of the washer-dryer shown in Figure 2. Fig. 7 is a front view showing a groove cover other than the hot air blowing port. Fig. 8 is a cross-sectional view taken along line A-A of the hot air outlet of Fig. 7. Figure 9 shows the results of the functional evaluation of the wind speed and the finished clothes after drying -32- 1359888. The figure ίο is a device for determining the flow pressure characteristics of the air supply unit. Fig. 11 is a photograph showing the evaluation of the function of the sputum and the completion of the laundry. Fig. 12 is a schematic view showing a state in which the high-speed wind blown from the nozzle is blown to the laundry. The stomach 13 shows a photograph of the drum volume of the dryer and the state of completion of the laundry during drying. Fig. 14 is a flow chart showing a part of the control processing executed by the microcomputer controlled by the control system shown in Fig. 6. Fig. 15 is a cross-sectional view of the air blowing unit 28. Fig. 16 is a plan view showing the state in which the impeller is placed in a state where the main fan casing is removed. Figure 17 is a plan view showing the state in which the fan cover is removed. Fig. 18 is a cross-sectional view showing the entrance and exit of the blade 101c of the impeller 101. Figure 19 is a cross-sectional view of the impeller. Figure 20 is a plan view of the impeller. Figure 21 is a plan view of the impeller of the lower side plate. [Main component symbol description] 1· Afe taitti • Invisible 2: outer groove 2d: outer groove cover -33- 1359888 3: laundry and dewatering tank 4, 2 8 a : motor 6: operation panel 8: drying filter 9: Door 1 6 : Water supply solenoid valve 2 7 : Filter duct 2 8 : Air supply unit 28 b : Fan housing 28 d : Main fan housing 28 e : Fan cover 29 : Drying duct 3 1 : Heater 32 : Hot air blowing outlet 32 d : Nozzle 3 3: Suction duct 3 3 a : Bell-shaped port 3 8 : Control device 101 : Impeller 1 〇 5 : Anti-vibration rubber 1 〇 6 : Vortex tube 107 : Projection - 34

Claims (1)

1359888 Patent No. 0971; No. 34840 Patent Application Revision of Chinese Patent Application Revision of the Republic of China on December 19, 100. Patent Application Scope 1. Dryer, equipped with: rotating drum for storing clothes, driving the rotating drum A motor and a drying machine that supports the casing of the rotating drum and performs a drying operation, wherein in the drying operation, a means for blowing air into the rotating drum is provided, and the means for blowing the air is: supplying air And a nozzle provided on the discharge side of the air blowing means, the air blowing means having a side plate having an opening and a main plate fixed to a rotating shaft of the motor; and being disposed between the side plate and the main board The more the center side is toward the outer diameter side, the impeller formed by the blade that retreats toward the opposite side to the rotation direction, the scroll-shaped flow path, and the convex portion of the outlet provided as the partition of the flow path (the partition plate convex portion) The convex portion as the partition plate is such that the distance between the wall surface of the flow path and the impeller is set to be larger toward the front end portion. The clothes dryer according to the first aspect of the invention, wherein the convex portion as the partition plate is slightly straight from a narrowest portion to a front end portion between a wall surface of the flow path and the impeller shape. 3. A dryer comprising: a rotary drum for storing clothes, a motor for driving the rotary drum, and a casing for supporting the rotary drum, and performing a drying operation, wherein: the drying operation In the middle, there is a 1359888 means for blowing air into the rotating drum, and an impeller is used as a part of the means to distinguish the wall of the flow path from being large. a rotating drum, a casing of the drum, and an air blower provided between the main board and the retracted vane flow path and the impeller, wherein the rotating drum of the impeller is provided with a scroll for housing the impeller a flow path, and a convex portion as a partition plate, and as a convex portion of the partition plate, a distance between the upper surface and the impeller is set to be more toward the front end portion. 4. A washing and drying machine The present invention includes a motor that drives the rotating drum and a washing and drying machine that supports the rotating roller and has a drying operation, wherein the drying operation is performed by the rotating roller means The method includes: a blowing means and a nozzle on the discharge side of the means, wherein the air blowing means includes: a side plate having an opening and a main plate of the motor-rotating shaft; and the outer plate is provided on the side plate and the outer diameter from the center side On the side, an impeller formed on the side opposite to the rotation direction, a scroll-shaped flow path, and a convex portion provided as the partition plate, the convex portion as the partition plate on the side The distance between the wall surfaces of the flow path is greater toward the front end. 5. The laundry dryer according to the fourth aspect of the invention is the convex portion of the partition plate, which is slightly linear from the narrowest portion to the front end portion of the flow path. 6. A washing and drying machine comprising: an outer tub for storing laundry, storing the rotary drum, storing washing water, and a motor fixed to the outer tub, driving the rotary drum, and supporting the outer drum a tank body with a dry running washing and drying machine, characterized in that: 1359888 In the above drying operation, a means for blowing air into the rotating drum is provided, and an impeller is used as a part of the means. a scroll-shaped flow path for accommodating the impeller, and a convex portion as a partition for distinguishing the flow path, and a convex portion as the partition between the wall surface of the flow path and the impeller The distance is set to be larger toward the front end.