JP2009273686A - Washing drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing drying machine capable of raising the temperature of laundry by spraying and supplying high-temperature steam in a state that washing water including a detergent is still remained and stuck to the laundry after draining the washing water in a washing process, and thereby effectively removing dirt by the swelling effect. <P>SOLUTION: The washing drying machine includes: a rotary tub 7 rotatably arranged inside a water tub 5 disposed inside a case body 2, so as to wash the laundry; a driving device 8 for rotating the rotary tub; a water supply device 17 for supplying the washing water to the water tub; a drain device 10 for draining; a hot air supplying device 19 for supplying hot air to the inner part of the water tub; and a steam generator 35 for supplying steam to the inner part of the water tub. The machine performs the washing process by stirring rotation after supplying the washing water including the detergent to the rotary tub storing the laundry, subsequently performs an intermediate dehydrating operation at a lower level of dehydration compared with the final dehydrating process, and then, performs a steam washing process by supplying steam to the rotary tub by the steam generator together with the stirring rotary operation of the rotary tub. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a washing / drying machine that automatically performs a process from washing to drying and supplies steam to laundry by a steam generator.

  Conventionally, it has been proposed to improve the washing performance by warming the washing water or installing a steam function in the washing machine and generating steam during washing in the washing process, so that the cloth gets wet quickly. ing. And in patent document 1, it is simple by heating a laundry, a water tank, etc. with warm air beforehand, before starting a washing process, without heating washing water directly, compared with the conventional warm water washing. A washing machine is shown which has a simple structure and enhances the hot water washing effect in the subsequent washing step.

  In Patent Document 2, as shown in FIG. 9, a steam generator (65) is arranged above or below the tab (55), and the container (67) provided in the steam generator (65) is arranged. Steam generated by heating the stored washing water is sprayed into the tub (55) and drum (57) to quickly wet the cloth, and an appropriate amount of washing water is put into the tub (55) and drum (57). 1 shows a configuration of a washing machine in which a washing stroke is performed by closing a water supply valve (73) and rotating a drum (57).

Further, in Patent Document 3, as shown in FIG. 10, steam generating means or hot water generating means (95) for supplying steam to the washing tub (87) is provided, and water is supplied after clothes are put into the washing tub. A washing machine is shown in which steam or hot water is supplied to the clothing before the cleaning is performed, and then the washing process is started to perform sterilization and mite killing.
JP 2006-198149 A JP 2004-298614 A Japanese Patent No. 2639045

  However, the configuration described in Patent Document 1 is for heating laundry or a water tub with warm air without heating the washing water, but in the subsequent washing process due to the amount of heat stored in the laundry. Since this is an alternative to the conventional hot water cleaning using warm water, a large amount of heat and time are required for heating.

  Moreover, in the structure of patent document 2, the vapor | steam generated with the vapor | steam generator (65) is condensed in the space of a container (55) and a narrow discharge flow path (70), and this is a tab ( 55) When discharged into the interior, it becomes a sudden open state, so that the efficiency such as the speed and amount of steam is lowered, and there is a drawback that it cannot be effectively sprayed on the laundry.

  Further, in the washing process using steam, steam is generated after a certain amount of washing water is supplied into the drum (57) and injected into the drum (57) from the steam flow path (70). Since the washing water is already stored in the drum (57) and the laundry is immersed in the washing water at the time of spraying, the heat of steam is taken away by the moisture contained in the laundry and the laundry is effective. Therefore, there is a problem that the washing time becomes long and the power consumption becomes large. The supply of the steam continues until an appropriate amount of washing water is supplied into the drum (57). Thereafter, the water supply valve (73) is closed and the drum (57) is rotated to perform the washing process. Therefore, the drum (57) does not rotate when the steam is supplied, and the permeation of the steam into the lower part of the stacked laundry is extremely reduced and the cloth wetting effect becomes uneven. there were.

  Also, since Patent Document 3 is intended for sterilization and miticide of clothing by steam or hot water, when steam is supplied from above the washing tub (87), the configuration shown in FIG. Also, the washing tub (87) does not rotate, and steam and hot water just falls on the top of the garment in which the pulsator (88) is provided. As in the case of Patent Document 2, The penetration effect of steam into the lower part of the stacked laundry was hardly expected.

  The present invention has been made in consideration of the above points, and sprays hot steam while washing water still remains and adheres to the laundry after the washing water has been drained in the washing process. Thus, it is an object of the present invention to provide a laundry dryer that can raise the temperature of the laundry and effectively remove dirt due to its swelling action.

  In order to solve the above-mentioned problems, a washing and drying machine according to the present invention includes a water tub disposed inside a casing, a rotating tub for washing laundry provided rotatably in the water tub, and the rotating tub. A driving device that rotates, a water supply device that supplies washing water to the inside of the aquarium, a drainage device that drains washing water from the inside of the aquarium, a hot air supply device that supplies hot air to the inside of the aquarium, A steam generating device for supplying steam to the inside of the water tank based on a small amount of washing water poured into the water tank, and storing the laundry in the rotating tank and supplying washing water to the washing step by stirring rotation After that, after performing an intermediate dehydration operation with a lower dehydration degree than the final dehydration process at the dehydration rotation speed, the steam generated by the steam generator and the agitation rotation operation of the rotation tank are placed in the rotation tank. Supply Characterized by being adapted to implement the over arm wash step.

  According to the present invention, after washing process and in a state where the washing water still remains and adheres to the laundry, high temperature steam is sprayed on the laundry, thereby increasing the temperature of the laundry and its swelling action. The cleaning effect can be improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The drum type washing / drying machine (1) whose longitudinal side view of the entire product is shown in FIG. 1 forms a casing (2) which is an outer shell by left and right side plates, front plates, top plates and back plates made of thin steel plates. . The lower surface of the housing (2) is supported by a plate-like base plate (3) formed relatively thick with polypropylene resin or the like, and the open back surface maintains rigidity as the housing. The back plate (4) is detachably covered.

  A water tank (5) is disposed inside the housing (2). The water tank (5) is made of resin with a closed back surface and has a horizontal cylindrical shape. The bottom of the water tank (5) is supported by a pair of elastic support devices (6) provided on the left and right of the base plate (3). Is suspended by a coil spring and elastically moved forward in the housing (2) and supported in an inclined manner.

  Inside the water tank (5), a bottomed cylindrical drum (7) that is rotatable about a horizontal axis is disposed. The drum (7), which is the rotating tub, is made of stainless steel, and is supported in an inclined state slightly upward toward the front along the water tub (5). A large number of dewatering holes (7a) and washing It has a baffle (7b) for scraping up, and functions as a shared tank for the water tank (5) in an easy washing and drying process.

  A motor (8), which is pivotally supported on the closed back portion of the water tank (5) and controlled at a rotational speed corresponding to an easy washing and drying process, is provided on the closed back surface of the drum (7). It is attached and the drum (7) is rotated by this motor (8). The motor (8) is, for example, an outer rotor type composed of a DC brushless motor, and the inner stator is fixed to the water tank (5) side, and a rotating shaft directly connected to the outer rotor is attached to the rear wall of the water tank (5). It penetrates in a watertight manner and is connected to the center of the back surface of the drum (7). A drainage pipe (10) that has a drainage valve (9) on the rear lower surface of the aquarium (5) and leads out washing water in the aquarium (5) to the outside of the machine is connected.

  An operation panel (11) for selecting and setting a washing course and the like is arranged on the upper front side of the housing (2), and a circular slot (into and out of the laundry in the center of the front) 12) is opened, and a door (13) having a transparent glass window that can be opened and closed is disposed.

  A bellows (15) made of a soft resin material having excellent chemical resistance is attached to the gap between the opening periphery of the inlet (12) and the tank cover (14) at the front opening of the water tank (5). In order to prevent leakage from the water tank (5) to the outside of the machine, a part thereof is extended and brought into contact with the transparent window (13a) on the back side of the door (13) in the closed state. Water leakage from the machine to the outside of the machine is also prevented, and a bellows part is provided to prevent the rotational vibration of the water tank (5) and drum (7) from being transmitted to the door (13) side.

  A detergent case (16) is provided at the top of the housing (2), and a water supply device (17) is provided at the rear thereof. On the upper surface of the water supply device (17), a connection port (17a) connected to a water supply (not shown) is provided, and when supplying water, the water from the tap water is supplied to the water supply device (17), the detergent case (16), and the detergent case ( 16) is supplied into the water tank (5) via a flexible hose (18) connecting the water tank (5).

  A heat pump unit (19) is provided in the front-rear direction at a substantially central portion in the width direction of the space formed between the water tank (5) disposed in the inclined state and the bottom surface of the housing (2). During the drying operation after the installation and rinsing process is completed, the drum (7) is driven while rotating at various speeds, and the low humidity hot air generated by the heat pump is dried. It is used for.

  The heat pump unit (19) includes a compressor (20) that compresses and discharges the refrigerant, a condenser (21) that dissipates and condenses the high-temperature and high-pressure refrigerant gas discharged from the compressor (20), The high-pressure refrigerant is decompressed with an expansion valve, and the evaporator (22) that introduces the decompressed refrigerant to evaporate and absorbs heat is connected in an annular pipe to form a heat pump cycle. From the front to the rear, the compressor (20), the evaporator (22), and the condenser (21) are arranged in this order.

  Each of the parts constituting the heat pump unit (19) is housed in a unit case (24) formed of a synthetic resin in a box shape. The unit case (24) is a rigid body formed of a relatively thick synthetic resin, and is disposed on the base plate (3), and forms the heat pump via a cushion rubber or the like. The evaporator (22) and condenser (21) are held in the center, and the compressor (20) and other cycle parts, and the drying fan unit (23) placed in the rear are held in place with elasticity. In addition, the entire unit including the unit duct (25) formed by closing the ceiling surface is unitized.

  The fan device (23) comprises a turbo-type blower fan (26), a spiral cylindrical fan casing (27) containing the turbo blower (26), and a fan motor (28) that drives the blower fan (26). The suction port (27a) is opened horizontally in the horizontal direction so as to correspond to the back side of the condenser (21), and the drum type laundry drying is performed by the rotation of the blower fan (26). A linear drying unit duct (25) extending from the front to the back of the machine (1) is formed.

  When the heat pump unit (19) is driven during the drying process of the washing and drying operation, the blower fan (26) is controlled to rotate at a speed of 3000 to 4000 rpm at the same time, and is about 70 by the condenser (21) that becomes high temperature. An air supply duct formed in a substantially arc shape so that the dried air heated to 0 ° C. surrounds the periphery of the motor (8) through the flexible duct from the discharge port (27b) of the fan casing (27). Discharge to (30). The dry air rises in the air supply duct (30) and enters the drum (7) from the air supply port (31) opened in the upper part on the back side of the downstream water tank (5) through the through hole (7c). It blows and dries moisture by bringing it into contact with the laundry to dry it.

  The air that has been humidified by contact with the laundry flows out of the drum (7) through the peripheral dewatering hole (7a), and is exhausted from the water tank cover (14) that opens at the top. The exhaust duct (33) provided in an annular shape so as to surround the opening of the aquarium cover (14) is communicated from (32) and is connected to the lower part via a flexible connection duct. It returns to the heat pump unit (19) at the bottom, and is dehumidified by passing through a low-temperature evaporator (22), that is, removes moisture contained in the circulating air, and then a high-temperature condenser ( It is heated again by flowing down to 21) and circulated as hot dry air.

  The heat pump unit (19) is not only used during the drying operation as described above, but also raises the temperature of the washing water by introducing warm air into the water tank (5) when it is easy to wash. You may use so that the dehumidification effect | action of a laundry may be promoted with a warm air by improving the washing effect or driving | running in the process which transfers to drying operation | movement at the time of dehydration or washing.

  (35) is a steam generator, which is arranged at the upper back of the water tank (5) as shown in FIG. 2 in a perspective view and in FIG. ) In the water tank (5) and the steam generator (37) using the water supplied from the water supply pipe (36) through the water supply valve (34) as heating steam and the steam generated by the steam generator (37). And a discharge outlet (38) for discharging.

  The steam generator (37) is a heat-resistant and highly heat-conductive metal die-cast, specifically, an aluminum die-cast formed in a box shape, and a heating chamber for heating the water supplied to the inside (39) is provided, and a water supply port (40) for supplying water from the water supply pipe (36) to the heating chamber (39) is provided on a side surface of the heating chamber (39). A heater (41) is embedded to heat and heat the steam. A temperature detecting means (42) such as a thermistor is provided at one side of the heating chamber (39), and the steam (S) generated by the heating is shown in FIG. To the water tank (5).

  The drum-type washing / drying machine (1) configured as described above automatically executes by selecting and setting each function process from washing to drying. 7) After being put in and closing the door (13), in the washing process, the washing force is supplied into the aquarium (7) and the centrifugal force is generated to balance the drum (7) with the gravity of the clothes. Rotate at a low speed of 40-60 rpm, wash the laundry with a baffle (7b) and drop it, and then wash it. After the rinsing process is finished, open the drain valve (9) to wash the washing water. The drum (7) is discharged out of the machine from the drain pipe (10), and then the drum (7) is dewatered and rotated at a high speed of 1200 to 1400 rpm in one direction, and the moisture of the laundry is centrifugally dehydrated from the many dewatering holes (7a). In the following, the flow chart of FIG. It will be described with reference to.

  In the washing process, first, the laundry is put into the drum (7), and after detecting the amount of cloth (S1), the water supply device (17) is operated to remove the water from the water supply into the detergent case (16). Is introduced into the water tank (5) as washing water containing detergent (S2), and when the water level in the water tank (5) reaches a predetermined water level, a water supply device ( The water supply operation of 17) is stopped (S3), and then a normal washing process for stirring by rotation of the drum (7) is started (S4).

  When washing of the laundry has passed for a predetermined time, for example, 20 minutes, the washing process is finished (S5), the drain valve (9) is opened and the washing water in the water tank (5) is drained (S6). At this point, intermediate dehydration (S7) is performed with a dehydration rate of about 40 to 50% at a speed of about 400 rpm, which is lower than that in the normal dehydration operation. Thereafter, the steam generator (35) is driven (S8).

That is, the heater (41) is energized to heat the inside of the heating chamber (39),
When the temperature detection means (42) detects 120 ° C., the water supply valve (34) is opened and steam water is supplied into the heating chamber (39) of the steam generator (37) in a predetermined amount, for example, 3 cc / Injecting water intermittently in such a way that water is poured for about 1 second at a speed of about 2 seconds, and then the lowered temperature is boiled and evaporated again, and if it rises to 120 ° C, water is poured again for about 1 second (S9) The supplied water is heated to form steam (S), which is discharged from the discharge port (38) into the water tank (5). At the same time, the motor (8) is driven to rotate the drum (7) with stirring. To start steam washing (S10).

  As a result of this steam washing, the laundry in the drum (7) is sprayed with steam (S) in a state where the water has been removed by the intermediate dehydration. By penetrating into the gaps, the fibers swell and peel off further dirt, and can be lifted to the surface, and the heating action increases the temperature of the laundry, which activates the remaining detergent, especially Since the washing effect of steam after the washing process against adhering dirt such as dried and solidified curry that is difficult to be removed even during the washing process is great, and the laundry is stirred by the rotation of the drum (7), steam (S ) Is evenly applied to the entire laundry, and a large cleaning effect can be obtained evenly.

  The steam washing action is to continue the operation for a predetermined time, for example, 15 minutes. When the operation time has elapsed, water supply to the steam generator (37) and heat generation of the heater (41) are stopped (S11). ) To stop the driving of the steam generator (35) and to temporarily stop the stirring rotation of the drum (7) (S12). After the steam washing process is completed from the above washing process Transition to the rinsing process.

  The water supply to the steam generator (37) is not limited to the above method, and a predetermined amount of water is supplied to the heating chamber (39) in advance, and the temperature of the heating chamber (39) indicates that there is no water by heating evaporation. When it is detected by a rise or the like, a method of supplying a predetermined amount of water again may be adopted.

  In this way, the washing process with washing water containing a normal detergent is performed, and after performing the intermediate dehydration, the steam washing process by spraying steam is performed, so that the dirt that has not been removed in the washing process with washing water is effective. In the rinsing process after the remaining dirt is lifted, the detergent can be rinsed off at the same time, and the cleaning performance can be greatly improved.

  The steam washing process may be performed before the washing process. As shown in the flowchart of FIG. 5, the laundry is put into the drum (7), the door (13) is closed, and the drum ( 7) The steam generating device (35) may be driven (S2) when the amount of laundry in the laundry is detected (S1).

  That is, the steam (37) is heated by the heater (41), and water for steam is injected from the water supply valve (34) into the heating chamber (39) (S3), so that the supplied water is made steam (S). This is discharged from the discharge port (38) into the drum (7). At the same time, the motor (8) is driven and the drum (7) is rotated to start the steam washing (S4). To do.

  By this steam washing, the laundry in the drum (7) is sprayed with steam (S) in a dry state, and can transfer heat to the laundry without being disturbed by moisture. The formed water particles permeate into the gaps between the fibers of the dried laundry, so that the fibers swell to remove the dirt and can be raised on the surface of the fibers. Moreover, since the laundry is being stirred by the rotation of the drum (7), the steam (S) is evenly applied to the entire laundry, so that a great cleaning effect can be obtained uniformly.

  The steam washing action continues its operation for a predetermined time, for example, 15 minutes, stops the driving of the steam generator (35) when the operation time elapses, supplies water to the steam generator (37), and the heater The heat generation of (41) is stopped (S5), and the stirring rotation of the drum (7) is temporarily stopped (S6).

  After that, the water supply from the water supply device (17) is passed through the detergent case (16), and the main water supply is supplied to the water tank (5) as washing water containing the detergent (S7), and the water level in the water tank (5) When the water reaches a predetermined water level, the water supply operation of the water supply device (17) is stopped (S8), and then the normal main washing process of stirring by the rotation of the drum (7) is started (S9). .

  As described above, after washing with steam, the washing process with normal washing water is performed, so that the dirt that emerges from the washing with steam will be better removed by the washing process with washing water after that. In particular, the cleaning effect on oil and fat stains is increased, and the cleaning performance can be improved.

  And if the main washing process of 20 minutes passes for a predetermined time, for example, after finishing the washing process (S10), the drain valve (9) is opened and the washing water in the water tank (5) is drained (S11), After performing the above-described intermediate dehydration (S12), the process is not particularly described. However, by performing the steam washing process, a further cleaning effect can be obtained, and the next rinsing process is performed. And migrate.

  Next, another embodiment will be described. This is to operate the steam generator (35) in parallel with the water supply operation at the time of moving from the end of the steam washing process to the main washing process in the embodiment, and the flowchart of FIG. As shown by the two-dot chain line, the water supply operation for the main washing process following the stop (S5) of the steam generator (35) and the stop of rotation of the drum (7) (S6) after the predetermined time of the steam washing process is completed. At the same time, the water supply valve (34) is opened in parallel with the start of water supply (S7) from the detergent case (16) into the water tank (5) by driving the water supply device (17), and the steam generator ( 35) is operating.

  Thereby, the interior of the heating chamber (39) is heated by energizing the heater (41) of the steam generator (35) simultaneously with the supply of the washing water containing the detergent into the water tank (5) (S13). By allowing water to flow continuously into the chamber (39) by opening the water supply valve (34) (S14), the inflow water is heated to warm water, and this is discharged from the discharge port (38) to the water tank (5). The water to be discharged is used to warm the washing water by supplying warm water into the rotating drum (7), and the cleaning effect is improved by activating the detergent.

  Subsequently, still another embodiment will be described. As shown in the flowchart of FIG. 6, when the washing process (S1) and the rinsing process (S2) of the laundry are completed, the drain valve (9) is opened to drain the washing water in the water tub (5). Then, the water contained in the laundry is dehydrated by centrifugal force by rotating the drum (7) at a high speed (S3), and then the process proceeds to the drying step (S4). In this embodiment, this drying is performed. The steam generated by the steam generator (35) is sprayed into the drum (7) during the stroke.

  Note that even during the dehydration before the drying process, the heat pump unit (19) is driven to supply hot air into the drum (7). As a result, the temperature of the laundry during dehydration rises and the viscosity of the washing water decreases, so that the final dehydration rate can be improved, and the drying process time can be shortened by increasing the dehydration rate. .

  In the drying process (S4), the rotation speed of the drum (7) is switched at a speed of about 50 rpm between normal rotation and reverse rotation every predetermined time, for example, every 30 seconds, and the fan (26 ), And further drive the heat pump unit (19) to discharge dry hot air into the air supply duct (30), blow it into the drum (7), and bring it into contact with the laundry to dry it It is. The air after heat exchange with the laundry is discharged from the dewatering hole (7a), returned to the heat pump unit (19), dehumidified, heated again, and circulated as dry air.

  At this time, as shown in the graph of FIG. 7, the initial stage of the drying process is a “preheating period”, and hot air is supplied into the water tank (5) by the heat pump unit (19) as the drying means. The temperature in the water tank (5) continues to rise. After that, when the inside of the water tub (5) reaches a predetermined temperature, for example, 60 ° C., when the laundry is wet in the water tub (5) in an undried state, the hot air absorbs moisture from the laundry. The heat is deprived, and the temperature in the water tank (5) hardly rises due to heat exchange, and becomes a “constant rate period” that is maintained substantially constant. Furthermore, when it progresses and reaches the end of the drying process when the laundry dries, the moisture absorption from the laundry decreases, so the temperature in the water tub (5) begins to rise and becomes a “decreasing period”.

  In the present embodiment, the steam generator (35) is driven when the “decreasing period” starts, and the steam generator (35) is supplied from the water supply device (17) through the water supply pipe (36). ) Is heated by a heater (41), and the generated steam (S) is sprayed into the drum (7). The operation of the steam generator (35) may be generated not in a continuous manner but in a plurality of times. In any case, the operation is controlled to stop after a predetermined time, for example, 20 minutes. .

  Then, when the temperature in the water tank (5) rises to a predetermined temperature, for example, 70 ° C., it is determined that the laundry is almost dried, and thereafter the drying process is continued by the remaining heat as a “cooling period”. The drying process is finished after a predetermined time.

  This not only allows the steam to swell and the fibers to swell into the laundry, which is generally in a dry state, while suppressing the wrinkle and the feeling of wrinkle and maintaining a soft feel and drying, after the drying process The generation of static electricity in can also be reduced.

  The steam generator (35) is driven before the end of the drying process following the washing process or the rinsing process, as shown by the two-dot chain line in the flowchart of FIG. 6 or the graph of FIG. Also good. That is, steam is introduced into the drum (7) before the end of the drying process, whereby the antistatic effect of the laundry can be obtained and the generation of static electricity can be prevented.

  Furthermore, as shown in the flowchart of FIG. 6, the steam generator (35) may be driven after the end of the drying process following the washing process or the rinsing process. That is, after the drying process is completed, the drum (7) is stopped at a predetermined time interval, for example, 5 minutes, and then the intermittent rotation operation in which the drum (7) is rotated at about 50 rpm for 30 seconds is continued for several hours. This is performed in conjunction with a so-called soft keep process. When the drum (7) rotates, the steam (S) is introduced into the drum (7) by the steam generator (35).

  The intermittent rotation of the drum (7) in the soft-keeping process after the drying process has been done is that the user does not take out the laundry even though the drying operation is completed, so that the laundry is stubbornly wrinkled. However, when the steam generator (35) is operated as described above, the steam sprayed into the drum (7) in conjunction with the agitation caused by the intermittent rotation of the drum (7). (S) can further suppress the occurrence of wrinkling and feeling of wrinkle in the laundry after the drying process, and has an antistatic effect, and can prevent the generation of static electricity.

  Note that after the drying operation is completed, the air blowing operation may be intermittently performed simultaneously with the intermittent rotation of the drum (7). And when the door (13) is opened after the drying operation is finished, if the power is turned off after a few minutes and all the operations are controlled, then the intermittent rotation of the drum (7) and the steam generator (35) will not work.

  The present invention can be applied not only to the drum type washing and drying machine but also to a vertical type washing and drying machine. As shown in FIG. 8, a water supply valve (34 ') for supplying water into the water tank (5') is installed at the upper part of the casing (2 ') in the vertical washer / dryer (1'). A water supply pipe (36 ') is connected to the valve port of the water supply valve (34') connected to a water source, and the upper surfaces of the water tank (5 ') and the rotating tank (7') are connected through the water supply pipe (36 '). A steam generator (35 ') arranged corresponding to the opening is connected.

  The steam generator (35 ') is basically provided with the same steam generator (37') as described in the above embodiment, and is supplied with water through the water supply pipe (36 '). By spraying the water as heated steam into the inside of the tank from the opening of the rotating tank (7 '), the same effects as in the above embodiment can be achieved.

  In the present invention, instead of the drying operation by the heat pump unit (19), drying means comprising a heating device provided with a heater and a fan device is used, and a small amount of water is placed in the air supply duct (30). Washing and drying machine adopting water-cooling dehumidification method that exchanges heat by bringing it into contact with warm air that rises in the air path and absorbs the moisture contained in the warm air and dries the circulating air It may be applied to.

It is a longitudinal cross-sectional view of the drum type washing-drying machine which shows one Embodiment of this invention. It is a perspective view of the steam generator in FIG. It is a longitudinal cross-sectional view of FIG. It is a flowchart which shows the washing process of one Example of this invention. It is a flowchart which shows the washing process of the other Example of this invention. It is a flowchart which shows the employment example at the time of the drying process of a steam generator. It is a graph which shows the relationship between the time passage of a washing and drying process, and the temperature in a water tank. It is a perspective view which shows the Example which employ | adopted this invention for the vertical washer-dryer. It is a perspective view of the drum type washing machine which shows a prior art example. It is the schematic of the washing machine which shows another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drum type washing machine 5 Water tank 7 Drum 7a Dewatering hole 7b Baffle 8 Motor 9 Drain valve 10 Drain pipe 12 Input port
13 Door 16 Detergent case 17 Water supply device
18 Flexible hose 19 Heat pump unit 20 Compressor
21 Condenser 22 Evaporator 23 Fan device
25 Unit duct 30 Air supply duct 31 Air supply port
32 Exhaust port 33 Exhaust duct 34 Water supply valve
35 Steam generator 36 Water supply pipe 37 Steam generator
38 Discharge port 39 Heating chamber 40 Water supply port
41 Heater 42 Temperature detection means 1 'Vertical washing dryer 5' Water tank 7 'Rotating tank
34 'Water supply valve 35' Steam generator 37 'Steam generator

Claims (4)

A water tank disposed inside the housing, a rotating tank for washing laundry provided rotatably in the water tank, a driving device for rotating the rotating tank, and supplying washing water to the water tank A water supply device, a drainage device for draining washing water from the inside of the aquarium, a hot air supply device for supplying warm air to the inside of the aquarium, and the inside of the aquarium based on a small amount of washing water poured inside And a steam generator for supplying steam to
Laundry is stored in the rotating tub, washing water is supplied, washing is performed by stirring rotation, and then an intermediate dehydration operation is performed at a dehydration rotation speed with a lower degree of dehydration than the final dehydration process. After that, the washing and drying machine is characterized in that a steam washing process for supplying steam into the rotating tank by the steam generator is performed together with the stirring and rotating operation of the rotating tank.   A steam washing process is performed in which the steam from the steam generator is supplied into the rotating tub while the rotating tub is stirred and rotated with the laundry before water supply is accommodated, and then the washing water is supplied into the rotating tub for washing. The washing / drying machine according to claim 1, wherein the process is carried out.   The washing process is performed by storing the laundry in a rotating tub and supplying heated water generated by continuously passing the washing water through the steam generator together with the washing water. The washing dryer according to 1.   The laundry dryer according to any one of claims 1 to 3, wherein steam by a steam generator is introduced into the rotating tub at least in the second half of the drying step after washing and rinsing of the laundry.

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