JP2019084091A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an excessive amount of heating means by constantly and smoothly distributing air sent from a blowing means to an inner tank through a blowing path and washing water pumped from the bottom of an outer tank by a circulation pump to one heating means. Being able to continuously generate hot water and hot air without heating. In addition, during the drying process, steam drying can be performed efficiently by generating steam by sprinkling water on the heating means together with warm air heating. SOLUTION: An outer tub capable of storing liquid inside, a substantially cylindrical drum or inner tub rotatably supported in the outer tub and accommodating laundry, and a blowing means for blowing air into the outer tub. And, a blower path connecting the outer tank and the blower means, a heat exchange means for heating the air in the blower path, and water sprinkling for sprinkling water in the outer tank from the upper part of the heat exchange means. It is provided with a tool and a water receiving portion for receiving the water flowing down from the heat exchange means. [Selection diagram] Fig. 2

Description

  The present invention relates to a washing machine for washing clothes and the like and a washing / drying machine for washing and drying in a consistent manner, and more particularly to a drum-type washing / drying machine comprising a drum inclined substantially horizontally or forward.

  The washing machine is to load the laundry into the rotatable inner tub to carry out the washing step, the rinsing step and the dewatering step, and the washing / drying machine is to load the laundry into the rotatable inner tub to carry out the washing step and the rinse step A process, a dehydration process and a drying process are performed. There is a drum type in which the rotation axis of the inner tank is inclined horizontally or forwardly upward, and a so-called vertical type in which the rotation axis is approximately perpendicular to the installation surface. Will be explained. In the washing step and the rinsing step, the drum is rotated at a low speed, and the laundry accumulated under the drum is lifted and tumbled to drop from above the drum. The tumbling operation applies mechanical force to the laundry to perform washing and rinsing. In particular, the washing associated with this operation is called tapping. During the dewatering process, the drum is rotated at high speed, and centrifugal dewatering is performed to push out the water from the laundry by the centrifugal force of the rotation.

  Also, in the washing process, a circulation pump is provided to enhance the washing effect, and the washing water in the washing tank (outer tank) is pumped up and applied to the laundry, so that the washing water in which the detergent is dissolved penetrates the laundry evenly. Let As described above, the drum type washing machine can maintain the washing performance even with a small amount of water by the tumbling operation and the circulation of the washing water by the circulation pump, so that water can be saved as compared with the vertical washing machine. .

  Furthermore, raising the washing temperature is performed as one of the methods to increase the washing power. That is, by raising the temperature of the laundry and the washing water, the detergency can be enhanced by enhancing the function of the detergent enzyme or promoting the diffusion of the surfactant and the like in the washing water. For washing in a state where the washing water is sufficiently filled in the drum and the washing water is always accumulated in the lower part of the outer tank, the heating means provided in the lower part of the outer tank is used to warm the washing water in the lower part of the outer tank There is a method of heating the entire circulation system including the outer tub by pumping up by a circulation pump and hanging it on the laundry from above the drum.

  On the other hand, when washing operation to perform tumbling operation by spreading and penetrating detergent liquid with high concentration with little water supply as washing to effectively remove sebum dirt etc. and washing operation is performed, washing water is less than normal washing Therefore, after the washing water is allowed to penetrate the laundry, the remaining amount of washing water in the lower portion of the drum is almost completely absent. For this reason, it is difficult to warm the washing water directly, since the heating means provided at the lower part of the drum is not flooded, and it is preferable to warm warm water by directly applying warm air or the like to the laundry.

  Moreover, in the drying process in the washing and drying machine, in the case of hot air drying in which low-humidity and high-temperature hot air is applied to the laundry, heating of circulating air is required. When a heater is used as the heating source, it is preferable to heat the air by providing a heater in the circulating air passage or in the fan unit in order to minimize the heat radiation loss from the heated warm air. In the case where warm air is applied to the laundry in both the washing step and the drying step, it is preferable to apply warm air to the laundry at a timing when the laundry is lifted to the upper portion by tumbling operation and then dropped.

  Patent Document 1 is one in which the heater for warm air and the heater for hot water are one heater. Patent Document 1 "provides a washing machine which can effectively wash laundry with heated water by utilizing heat generating means for the drying function, and can effectively provide the laundry function with the added value of having the drying function." For the purpose, “a water tank provided in the aircraft, a duct provided on a side surface of the water tank, a blower for blowing air into the water tank through the duct, and a heat generating means provided inside the duct And a washing machine characterized in that the wind sent from the blower through the duct is heated from the heat generating means inside the duct to warm the air, and the warm air turns into a water tank. It is possible to dry the laundry inside the water tank by supplying it to the inside of the water tank, and by supplying water to the inside of the water tank when washing, the water is also accumulated in the inside of the duct. Internally And hot water by being heated up by means, even by warm the water inside the water tank can wash laundry. "It has been disclosed by the hot water (heated water).

  Further, in Patent Document 2, “The heater unit 17 integrally integrates a substantially cylindrical water supply cylindrical portion 38 through which water from the water supply valve 20 passes in the upper portion, and a heater cylindrical portion 39 in which the heater 35 is installed in the lower portion. In the washing step, the water passing through the water supply cylindrical portion 38 of the heater unit 17 is heated and supplied into the water tank 2 by energizing the heater 35, and in the drying step, the heater 35 is heated. Disclosed is a configuration in which the high temperature air radiated from the fins 32 provided in the lower part of the heater cylindrical portion 39 of the heater unit 17 is circulated as warm air from the rotating drum 3 into the water tank 2 by energizing the There is.

JP 2007-167385 A JP 2017-077279 A

  In the washing machine or the washing / drying machine described in Patent Document 1, a water supply port for blowing air warmed by a heater serving as both hot water and hot air into the water tank, and a water tank when the heater is submerged to create hot water. The communication part to the heater of the water inside is made common. In the drum type, in this case, the air outlet for the warm air heated by the heater is provided at the bottom of the outer tank, so the air warmed by the heater is also air from the bottom and the hot air is efficiently discharged in the drying and washing steps. I can not put it on the laundry. In addition, when water is supplied until the water surface appears in the outer tank, it is not configured to be able to generate warm air while maintaining the water level.

  In the washing and drying machine described in Patent Document 2, since water is supplied to the water flow pipe connected to the heater to create warm water, impurities such as chalk in tap water are heated to the inner wall of the heated water flow pipe by heating. It is easy to deposit and deposit. At the same time, the waste in the washing water to be circulated is gradually accumulated, and eventually the water pipe is blocked, so that heat exchange can not be performed and the heater unit periphery is excessively heated. Furthermore, during drying, lint in the circulating air is clogged between the fins forming the high-temperature air, which interferes with air heating and causes the heater unit to overheat.

  In order to solve such problems, the washing and drying machine according to the present invention has an outer tub capable of storing liquid therein, and a substantially cylindrical shape rotatably supported in the outer tub and containing laundry. A drum or an inner tank, a blower for blowing air to the outer tank, a blower path connecting the outer tank and the blower, a heat exchanger for heating air in the blower channel, and the heat exchanger A water sprinkling device for sprinkling water in the outer tank from an upper portion of the water tank, and a water receiving portion for receiving the water flowed down from the heat exchange means.

  According to the present invention, since water and air can be allowed to flow to the effective heat transfer surface of the heating means, accumulation of chalk and dust can be prevented in the following manner, and hot water and warm air are continuously generated. it can. In the washing step, the washing water pumped from the bottom of the outer tank by the circulation pump is sprayed to the heater surface of the heater unit and the guide in contact therewith to cause an irregular flow. Thereby, the surfaces of the heater and the guide can be cleaned while the cleaning water is well mixed, so that the hot water can be continuously generated without excessively heating the heating means. Further, when heating the air, when the air sent from the air blowing means to the inner tank flows to the heater unit to heat it, it is possible to scavenge the accumulated dust and extraneous matter by the disturbance when passing through the heater and the guide. Thereby, warm air can be continuously generated without excessively heating the heating means. Furthermore, in the drying step, steam drying can be efficiently performed by generating steam by sprinkling water to the heating means together with warm air heating.

It is an appearance perspective view showing a drum type washing and drying machine concerning an embodiment of the present invention. It is a schematic sectional drawing of the right side seeing from the front which shows the internal structure of the drum type washing-drying machine which concerns on embodiment of this invention. It is the perspective view which showed typically the drum water sprinkling mechanism and the warm air circulation mechanism which concern on embodiment of this invention. It is a schematic diagram which shows the basic composition of the heater unit which concerns on embodiment of this invention. It is a block diagram showing composition of a control device of a drum type washing and drying machine concerning an embodiment of the present invention. It is process drawing explaining the driving | operation process of the washing operation (washing-rinse-dehydration) in the drum type washing-drying machine which concerns on the example of 1st Embodiment. It is sectional drawing shown about the basic composition of the heater unit in the 2nd Example of this invention. It is sectional drawing shown about the basic composition of the heater unit in the 3rd Example of this invention. It is sectional drawing shown about the basic composition of the heater unit in the 4th Example of this invention.

  Examples will be described below with reference to the drawings.

Example 1
FIG. 1 is an external perspective view of a drum-type washer / dryer according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the right side viewed from the front showing the internal structure of the drum type washing and drying machine according to the first embodiment of the present invention.

  First, the appearance will be described. A frame is formed by combining a side plate 1a mainly made of a steel plate and a resin molded product and a reinforcing member (not shown) on the upper part of the base 1h, and a front cover 1c and an upper cover 1e are attached thereon Form the housing 1. The front cover 1c is provided with a door 9 for taking in and out the laundry 207, and a back cover 1d is attached to the back surface.

  Next, the outline structure of the washing and drying machine and the operation and role of each component in the washing process to the drying process will be briefly described. Inside the housing 1 shown in FIG. 1, as shown in FIG. 2, an outer tank 2 is provided substantially at the center. The outer tank 2 is supported by a plurality of lower dampers 5. In the drum 3 rotatably provided inside the outer tub 2, the door 9 is opened and the laundry 207 is loaded. The door 9 itself has the door glass 9a fixed to the door frame 9b, and is attached to the housing by a hinge (not shown). A fluid balancer 208 is provided on the outer periphery of the opening of the rotatable drum 3 as needed to reduce the vibration due to the unbalance of the laundry 207 at the time of dewatering. Further, inside the drum 3, a plurality of lifters 209 are provided to lift the laundry 207. The rotatable drum 3 is directly connected to a drum drive motor M10a via a main shaft 211 connected to a metal flange 210. Alternatively, a so-called belt drive configuration may be used in which a pulley fixed to the main shaft and a motor fixed to the outer tank are connected via a belt, and the drum is driven.

  Further, a rubber bellows 10 made of an elastic body is attached to the opening of the outer tank 2. The rubber bellows 10 serves to maintain the water tightness between the inside of the outer tank 2 and the door 9. This prevents water leakage during washing, rinsing and dewatering. The rotatable drum 3 has a large number of small holes (not shown) for centrifugal dewatering and ventilation in a cylindrical portion which is a side wall.

  FIG. 3 shows the basic components of the water sprinkling mechanism 224 for sprinkling the upper part of the drum 3 from the water receiving part 54 at the lower part of the outer tank 2 via the circulating pump 18 in the washing step and the rinsing step and heat exchange using the same circulating pump 18 It is the perspective view which showed the basic component which water-supplys to the water sprinkler 232 of the heater unit 236 provided in the duct 231. FIG. Further, in the drawing, the basic components of warm air circulation that blows out circulating air heated by the heater unit 236 from the outlet of the drum 3 through the heat exchange duct 231 from the outlet of the drum 3 by the blower fan 20 into the drum 3 during washing and drying steps. It is shown. Further, in this embodiment, a part of the high humidity air at the drum outlet is exhausted from the exhaust duster 234 to the outside of the casing, and the surrounding air of a colleague is taken in from the suction duster 235 to dehumidify.

  A drainage port 21 (see FIG. 3) provided for drainage on the bottom surface 54 a of the water receiving portion 54 communicates with the drainage hose 26 via the lint filter 222 and the drainage pump 230, and the inside of the water receiving portion 54 Water can be drained by the drain pump 230. Also in the path from the drainage port 21 to the circulation pump 18, it is a circulation path through which the lint filter 222 is allowed to pass and then the water sprinkling mechanism 224 and the water sprinkling device 232 of the heater unit 236 are pumped up. In the present embodiment, the drainage pump 230 and the circulation pump 18 are separately provided. For example, a switching valve (not shown) is provided at the pump outlet, and the drainage hose 26 or the watering nozzle 223 and the watering device 232 are provided. There is no problem even if the configuration is made to be integrated into one pump by switching appropriately.

  The air blowing duct 29 and the heat exchange duct 231 for guiding the air from the air blowing fan 20 and the air blowing fan 20 outlet into the drum 3 are fixed to the housing 1 (not shown) apart from the outer tank 2 . On the other hand, the blowout nozzle 203 is fixed to the outer tank 2. For this reason, between the blowout nozzle 203 and the air duct 29 of the outer tank 2 and between the outer tank outlet 80 and the heat exchange duct 231 are connected via the bellows pipe 212 made of rubber, and the vibration of the outer tank 2 is thermally Transmission to the exchange duct 231 and the air duct 29 is prevented.

  A temperature sensor (not shown) for monitoring the temperature and water temperature of the air is provided at the outlet 21, the circulating air outlet 2 b connected to the intake side of the blower fan 20, and the outlet of the heat exchange duct 231. In the vicinity of the heater unit 236, a temperature sensor (not shown) for preventing duct overheating is provided.

  FIG. 4 is a perspective view showing a schematic structure of the heater unit 236 in the present embodiment. The heaters 237 are folded back and meandered in the flowing direction (height direction) of the air in the heat exchange duct 231, and are further arranged in two rows in the thickness direction of the heat exchange duct 231. On both sides of the two rows of heaters 237 facing the inner wall of the duct, a plate-like guide tool 233 longer than the meandering height of the heater 237 in the duct height direction and longer than the meandering lowermost portion is brought into contact with the heater 237 It is fixed. The water sprinkler 232 is provided at a position higher than the heater 237, and uses a tube having a length corresponding to the meandering width of the heater 237 and a thickness that is applied to the two rows of heaters 237. One end of the pipe is closed, and the pipe wall from the washing water inlet at the other end to the closed end is provided with a large number of water holes 238.

  Since a porous plate is used for the guide tool 233, air flowing from the bottom of the heat exchange duct 231 and cleaning water sprayed from the upper portion of the heater unit 236 can flow between the inside and the outside of the heater unit 236. As a result, the wash water and the air are well mixed, and heat exchange with the heater 237 and the guide tool 233 is promoted, so that overheating of the heater 237 can be prevented. Furthermore, since the heater surface and the guide of the porous plate make the flow irregular and generate disorder, it is possible to wash away creaking and accumulated debris. Thereby, warm air and warm water can be generated continuously.

  The upper and lower end portions of the guide 233 in the duct height direction are bent from the heater 237 side to the inner wall side of the heat exchange duct 231. With such a shape, the circulating air flowing in the heat exchange duct 231 is allowed to flow in a large amount without resistance in the gap between the heaters 237 arranged in two rows in the thickness direction of the duct. Further, on the side of the upper end of the water sprayer 232, the water spray from the water flow hole 238 of the water sprayer 232 is prevented from scattering to the inner wall of the heat exchange duct 231 and acts as a guide to flow down to the surface of the heater 237.

  The attachment of the heater unit 236 to the heat exchange duct 231 is attached to the heater 237 and the sprinkler 232 through a bellows 239. With such a configuration, air tightness of the duct can be maintained, and vibration of the washer / dryer can be absorbed individually.

  When water is sprayed to the heater unit 236, the warm water having flowed down the heater 237 and the guide tool 233 flows down to the water receiving portion 240 of the duct at the bottom of the heat exchange duct 231, and then the outer tank 2 via the rubber bellows tube 212. Flows to the water receiver 54 of the By temporarily receiving the warm water flowing down from the heater unit 236 in the water receiving portion 240 of the duct which moves substantially in synchronization with the heater unit 236, the warm water is not scattered and radiated against the vibration of the washing and drying machine. The water receiving portion 54 of the outer tank 2 can be made to flow rapidly. At the time of air heating, the blower fan 20 is driven to heat the air flowing into the outer tank outlet 80 to 231 by the heater unit 236. The warm air from the outlet of the blower fan 20 is blown out from the blowout nozzle 203 of the outer tub 2 toward the laundry 207 in the drum. Since the guide tool 233 fixed in contact with the heater 237 also has a high temperature, it can be used together with the surface of the heater 237 as a heat transfer area. Further, as described above, the shape of the end portion of the guiding member 233 is expanded toward the inner wall of the heat exchange duct 231 at the point where the end of the heater 237 is in contact with and fixed. Thereby, the air flow reaching the heater unit 236 from the lower part of the heat exchange duct 231 can smoothly flow into the gap between the two rows of heaters 237, so that the heater unit 236 can be prevented from becoming excessively hot. it can.

  The process from the washing process to the drying process in the drum-type washer / dryer configured in this way will be described in detail from the viewpoint of the operation pattern and the timing of hot air and hot water generation with reference to FIGS. In addition, there is also a model that can set the pre-washing operation to perform the washing process to the dewatering process with the detergent separately prepared for the normal washing course as a pre-stage of the normal washing course operation. Targets driving.

  The laundry 207 is put into the rotatable drum 3, water is supplied while the drainage pump 230 is stopped, and the drum 3 is rotated to wash the laundry 207. The washing step is roughly divided into a detergent dissolving step, a pre-washing step, and a main washing step. The detergent dissolving step is a step of presenting the amount of detergent and the required time for washing by measuring the amount of cloth at the start of washing, dissolving the put-in detergent with water, and spraying washing water on the laundry 207 in the drum 3. The water supplied to the detergent input unit is guided to the water receiving unit 54 located at the lower part of the drum 3 together with the detergent. When the circulation pump 18 is driven, the water in the water receiver 54 enters the suction port (not shown) of the circulation pump 18 from the drainage port 21 through the lint filter 222. The washing water of the high concentration detergent pressurized by the circulation pump 18 is returned again to the water receiving portion 54 from the circulation discharge port 54b communicating with the outlet of the circulation pump 18 (circulation path of the detergent dissolving process: see FIG. 3). Repeating this circulation produces a high concentration detergent solution in which the detergent is dissolved in a small amount of water. The output of the circulation pump 18 is sufficient to pump wash water according to the maximum washing load up to the water spray nozzle 223 provided above the outer tank 2. For this reason, if it circulates in the circulation path of the above-mentioned detergent dissolution process, the required power of circulation pump 18 will be finally converted to thermal energy, and the temperature of high concentration detergent liquid will be raised. The generated high-concentration detergent solution is pumped up to a water spray nozzle 223 provided above the outer tank 2 by changing the rotation direction of the circulation pump 18 in this embodiment, and is dispersed to the laundry 207 in the drum 3 Ru. That is, at the outlet of the circulation pump 18, a path leading to the upper portion of the outer tank 2 and a path for returning to the water receiving portion 54 without scattering as described above are required. A discharge port (see FIG. 3) connected to is provided, and by switching the rotation direction of the circulation pump 18, the path is switched by discharging from the discharge port side first communicated according to the rotation direction. Further, it is branched via a switching valve in the middle of the route sent to the water spray nozzle 223, and sent to the water spray device 232 of the heater unit 236.

  In the pre-washing step, the laundry 207 sprinkled with the high concentration detergent solution is beaten in a tumbling operation. Since the laundry 207 holds the high concentration detergent liquid, it is possible to separate the dirt from the laundry 207 by the action of the detergent components and the mechanical force. Furthermore, the heater 237 is energized and the blower fan 20 is driven to send warm air into the drum 3 to wash the laundry 207 while warming it, if necessary. Heat conduction is better than air occupies the fiber gap of the laundry 207, and heating can be performed efficiently. Further, by raising the temperature, it is possible to lower the surface tension of the high concentration detergent solution that is holding water. Furthermore, when the temperature of the laundry 207 is raised, air in the fibers causes the fibers to swell, which can further accelerate the penetration of the high concentration detergent liquid into the fibers. This allows more soil to be separated from the fibers in a short time. The separated stains are rapidly dispersed in the high concentration detergent solution holding water, so that they can be prevented from aggregating again and reattaching.

  Further, depending on the stain, there are cases where the amount of washing water applied to the laundry 207 is small (detergent concentration is low) falls well, and conversely, the large amount of washing water (low detergent concentration) is good falling. There is a difference in the motive power of soil removal that acts on both, and it can be interpreted as follows. The surfactant, which is one of the main components of the detergent, promotes the wetting of the fiber, and further attracts the surface potential of the dirt and the cloth to the negative polarity of the surfactant, thereby serving to negatively charge the surface. This has the effect of increasing the repulsive force between the dirt or fibers and dirt that has floated from the laundry 207. Therefore, for washing of solid dirt adhering mainly to the van der Waals force, the higher the concentration of the surfactant, the stronger the aforementioned repulsive force against the van der Waals force can be enhanced. Therefore, solid stains and the like can generally be lowered better if the surfactant concentration is high. On the other hand, so-called water-soluble stains that are easily soluble in water and wash water have different dissolution rates depending on the concentration of the stain that is a solute to the wash water that is the solvent. In a solution with a low concentration of dirt, the dissolution rate is high, but in a thick solution, the dissolution rate decreases. For this reason, if the concentration of the dirt dispersed in the washing water in which the laundry 207 holds water is reduced, the dirt from the laundry 207 is more likely to be dropped. In other words, the washing water for holding the laundry 207 needs to be replaced with washing water having a very low concentration of dirt, or a treatment for thinning the concentration of dirt to be performed is required. That is, the role of the surfactant for this type of soil is to play a large role in dispersing and holding the soil removed from the laundry 207 and preventing aggregation and reattachment, so that if a certain detergent concentration is satisfied, The dependence of detergent concentration on soil removal is small.

  For both stains, raising the cleaning temperature results in an increase in cleaning power. With respect to the former, by raising the temperature, molecular diffusion in the wash water is promoted, so that more surfactant can be attached to the cloth surface or the soil surface, and the repulsive force can be enhanced. Also for the latter, the diffusion of the surfactant in the washing water is improved, and the wetting of the fabric surface can be promoted. Furthermore, the separated dirt can be effectively diffused.

  In the subsequent main washing step, additional water is supplied when the pre-washing step is completed, the water amount in the water receiving portion 54 is increased, and the water level is raised. The water level is such that the washing water is pumped up from the water receiving portion 54 by the circulation pump 18 to maintain a water level sufficient for continuously spraying from the water spray nozzle 223 at the upper portion of the outer tank 2. That is, it is a step of securing sufficient washing time and effectively removing dirt that was difficult to drop in the pre-washing step in which the amount of washing water was small. The spraying from the water spray nozzle 223 may be continuous or intermittent. Specifically, while much dirt still adheres to the back side of the laundry 207 and the like, the cleaning water which the laundry 207 holds water is constantly dispersed by continuously spraying to promote the agitation of the washing water. It can be replaced with wash water with low dirt concentration. After that, when most of the stains have been removed, it is better to use the mechanical power of tapping to remove the remaining stains. Therefore, it is preferable to make intermittent spraying into the latter half so as not to disturb the mechanical force. Further, by intermittently setting the driving force of the circulation pump 18, the amount of power consumption can be reduced, which is preferable from the viewpoint of energy saving.

  The water spray nozzle 223 is fixed to the outer tub 2 at a position above the central axis of the rotatable drum 3 as viewed from the front of the washing and drying machine and at a front side closer to the front as viewed from the side of the washing and drying machine. The ejection range from the nozzle 223 is spread at a wide angle in the radial direction of the drum 3 (see FIG. 4). In this main washing step, the laundry 207 is lifted by the rotation of the drum 3 and the washing water is scraped off by the rotation of the drum 3 together with the spread of a wide area, and the laundry is dropped from above the drum 3. Apply mechanical force to the ball and wash it. As the diameter of the drum is larger, a synergetic effect of a wide range of spraying and tapping can be obtained, and the time of the main washing process can be shortened. If the flush water level is lower than the outer tank outlet 80 connected to the bottom of the heat exchange duct 231, air can be circulated between the outer tank 2 and the blower fan 20. There is no problem even if the washing temperature is raised using warm air as in the washing step. When the water level is further raised or when the washing temperature is raised more efficiently, the circulating pump 18 is driven to pump up the washing water at the bottom of the outer tank 2 and water is sprayed from the water sprinkler 232 to the heater 237. warm. At this time as well, if it is possible to circulate the warm air, it is acceptable to combine the circulation of the air. Also, direct contact between the warm air and the water flow is promoted by setting the warm air blowout nozzle 203 near the height where the laundry 207 can be lifted by the top of the drum or by the tumbling operation, mainly the foaming due to the agitation of the washing water. Also has a composition that can defoam quickly.

  In addition, as necessary, the main washing step performs a second main washing step performed after the first main washing step and the first main washing step. The amount of water in the second main washing step is increased by supplying water at the end of the first main washing step to be larger than the amount of water in the first main washing step to increase the amount of water scraped by the drum rotation. Further, if necessary, the circulation flow rate of the circulation pump 18 in the second main washing step is also made larger than the circulation flow rate of the circulation pump 18 in the first main washing step. Furthermore, the rotational speed of the motor M10a for driving the drum in the second main washing step is lower than the rotational speed of the motor M10a in the first main washing step.

  The main washing step is mainly performed to separate dirt, such as the inside of the clothes and the inside of a pocket, which has not been washed out in the low-water pre-washing step, from the laundry 207. Therefore, also in order to remove various stains, it is more preferable to use a combination of at least two or more steps in which the amount of water and the rotational speed of the drum drive motor M10a are changed as described above. In the first main washing step, in order to increase the rotational speed of the drum 3, the laundry 207 lifted upward with the rotation of the drum 3 does not all fall downward, but mostly by the centrifugal force on the inner wall of the drum 3. It is rotating with the drum 3 in a fixed state. Since the washing water is sprayed from the circulation pump 18 there, the penetration flow rate of the washing water to the laundry 207 is increased. This makes it easy for the dirt to dissolve out of the laundry 207. In the second main washing step following this, the rotational speed of the drum 3 is made lower than in the first main washing step, the centrifugal force is weakened, and the above-mentioned sticking of the laundry 207 to the drum 3 is minimized. The process focuses on washing from the top to the bottom. As a result, by applying a mechanical force to the laundry 207, it is possible to easily remove hydrophobic stains. When the laundry 207 is knocked down from above the drum 3, the water level of the washing water retained below the drum 3 is increased, and the amount of circulating water is increased, so that the laundry 207 can be used more than necessary. It is also possible to prevent the fibers from being compressed by colliding directly.

  In the rinsing step, the drainage pump 230 is driven to drain the washing water, and then the drainage pump 230 is stopped to supply rinse water to the outer tank 2 to a predetermined water level. Thereafter, the drum 3 is rotated to rinse and wash the laundry 207 and the rinse water.

  In the dewatering process, after the drainage pump 230 is driven to drain the rinse water in the outer tub 2, the drum 3 is rotated to spin-dry the laundry 207. The dewatering rotational speed is increased to the set rotational speed according to the load unless the laundry 207 is not balanced and the current value of the motor M10a exceeds the upper limit. When the drum 3 is rotated at a high speed by increasing the dewatering rotational speed, vibration is transmitted to the outer tank 2 and the outer tank 2 is also slightly vibrated. The air duct 29, the air fan 20, and the heat exchange duct 231 are fixed to a housing, and each duct is connected to the outer tank 2 via a rubber bellows tube 212, so the rubber bellows tube 212 vibrates. Absorb part of Further, by blowing warm air into the drum 3 in the dewatering process, the surface tension of the washing water hydrated in the laundry 207 can be lowered to improve the dewatering performance.

  In the drying step, the blower fan 20 is driven to energize the heater 237 to send warm air into the drum 3. In this embodiment, the exhaust tombira 234 and the air supply tombira 235 provided in the heat exchange duct 231 communicating with the suction port (not shown) of the blower fan 20 are opened to exhaust a part of the circulating air from the exhaust tombira 234 Then, the same amount of air in the housing is taken in from the air supply chamber 235. By replacing a part of the circulating air with the air in the housing passing through the ambient air, the humidity of the high humidity air discharged from the drum 3 can be reduced. In particular, in the first half of the drying where the moisture content of the laundry 207 is high, it is preferable to keep the humidity of the warm air low by increasing the replacement amount of the air. Since the moisture content of the laundry 207 decreases in the latter half of drying, it is necessary to increase the temperature of the fiber surface to increase the amount of heat transfer to the interior in order to promote the evaporation of the laundry 207 from the fiber interior. Therefore, in order to increase the temperature of the hot air and increase the amount of heat transfer to the laundry 207, it is preferable to suppress the replacement of the air in the ventilation duct 232 and raise the temperature level of the circulating air. However, in the case where the drying load is small and changing the temperature and humidity level of the air hardly affects the drying time and the power consumption, the replacement amount of air in the ventilation duct 232 may be fixed even if it is fixed. In order to suppress the wrinkles of the laundry 207 and to emphasize the finish, water is supplied to the bottom of the outer tank 2 in the second half of the drying, and the circulation pump is driven to evaporate a small amount of water from the water sprayer 232 with the heating of the warm air. So-called steam drying may be performed. There is no change in function in any way as a configuration in which tap water can be directly supplied to the sprinkler 232.

  As described above, according to the washing / drying machine capable of operation from washing to drying and the washing machine for washing, the washing temperature of the laundry 207 and the washing water can be efficiently raised using warm water and warm air. it can. Furthermore, in the drying step, warm air of low humidity can be ensured by heating the circulating air and replacing the air with humidity equivalent to the environmental atmosphere. When importance is given to the finish of drying, in the latter half of drying, a small amount of water can be sprayed to the heater 237 to generate steam with warm air to suppress dry wrinkles. In addition, it is possible to cope with use conditions where the humidity of the ambient air is high and it is difficult to reduce the humidity even if it is replaced, water is supplied to the upstream side (lower part of the heat exchange duct 231) of the circulating air heated by the heater unit 236 ( Although not shown, the air in the duct may be additionally equipped with a structure for water cooling and dehumidifying (cooling water is drained from the lowest portion of the heat exchange duct 231 to the outside of the duct), and there is no difference in the washing and drying function.

  FIG. 5 is a block diagram showing a configuration of a control device 100 of a drum-type washing and drying machine according to an embodiment of the present invention. The control device 100 (operation control means) controls energization of the motor M10a (drive device M10), the water supply unit 15, and the heater 237 to enable the washing and drying operation. Furthermore, if the conductivity detection means 4 is provided, the conductivity of the wash water in the outer tank 2 detected by the conductivity detection means 4 is calculated in the control device 100, and the soft finish contained in the rinse water It is possible to determine the presence or absence (determination with respect to the reference concentration), determine the shortening of the dehydration step, determine the shortening of the rinsing step, and the like. Thus, depending on the type and quality of the detergent and the amount of dirt on the clothes, a detailed washing and drying operation can be performed. As shown in FIG. 5, the control device 100 comprises a microcomputer (hereinafter referred to as "microcomputer") 110, a drive circuit, operation switches 12 and 13, conductivity detection means 4, and input circuits from various sensors. . The microcomputer 110 receives various information signals from the user's operation, the washing process, and the drying process. The microcomputer 110 is connected to the drive device M10 (motor M10a), the water supply solenoid valve 16, the drainage pump 230, the blower fan 20 and the like via the drive circuit, and controls the opening / closing, rotation and energization of these. In addition, in order to inform the user of information regarding the drum-type washing machine, the display 14 and a buzzer (not shown) are controlled.

  Next, an operation process of the drum-type washer / dryer according to the first embodiment will be mainly described from the viewpoint of a control algorithm. FIG. 8: is process drawing explaining the driving | operation process of the washing operation (washing-rinse-dehydration-drying) in the drum type washing-drying machine which concerns on the example of 1st Embodiment.

  In step S1, the process control unit 112 receives an input of course selection of the operation process of the drum-type washer / dryer (course selection). Here, the user opens the door 9, inserts the laundry 207 to be washed into the drum 3, and closes the door 9. Then, the user operates the operation switches 12 and 13 to select and input the course of the driving process. By operating the operation switches 12 and 13, the course of the selected operation process is input to the process control unit 112. The process control unit 112 reads the corresponding driving pattern from the driving pattern database 111 based on the input driving process course, and proceeds to step S2. In the following description, it is assumed that the 40 ° C. warm water washing course (washing without prewashing to twice rinsing to dewatering) is selected.

  In step S2, the process control unit 112 executes a process of detecting the weight (cloth amount) of the laundry 207 put on the drum 3 (cloth amount sensing). Specifically, the process control unit 112 drives the motor M10a to rotate the drum 3, and the clothes weight calculating unit 114 calculates the weight (clothing amount) of the laundry 207 before water injection.

  In step S3, the process control unit 112 determines the presence or absence of selection of the pre-washing process which is one of course selection, and performs branch selection of the control algorithm. Hereinafter, it is assumed that no pre-washing is selected.

  In step S4, the process control unit 112 executes the process of calculating the amount of detergent and the operation time (calculation of the amount of detergent operation time). Specifically, the process control unit 112 controls the water supply solenoid valve 16 (for example, opens the fourth solenoid valve) to directly supply water to the water supply port 2 a of the outer tank 2. The conductivity measuring unit 115 detects the conductivity (hardness) of the water supplied. The sensor T1 detects the temperature of the water supplied. Thereafter, the water supply solenoid valve 16 is controlled to end the water supply to the outer tank 2.

  The detergent amount / washing time determination unit 116 determines the amount of detergent to be introduced and the operation time by map search based on the cloth amount detected in step S2, the conductivity (hardness) of water, and the temperature of water. That is, the amount of cloth, the conductivity of water, and the amount of detergent that can ensure the cleaning performance for each temperature are stored as a map of data, and the measured value is compared with the map and the measured value falls within Determine the amount of detergent and operating time based on the inside. Then, the process control unit 112 displays the determined detergent amount and operation time on the display 14. In addition, although it demonstrated as what supplies water to the outer tank 2 and detects the electric conductivity (hardness) and water temperature of water, it is not restricted to this. For example, the conductivity (hardness) of the water and the water temperature in the previous operation may be stored in the storage unit (not shown) of the microcomputer 110 and used.

  In step S5, the process control unit 112 executes a detergent input waiting process (detergent input waiting process). For example, the process control unit 112 waits for a predetermined time, and proceeds to step S6. If the process control unit 112 is closed after the detergent charging unit 7 is opened by means (not shown) for detecting the opening and closing of the detergent charging unit 7, it is assumed that the detergent is charged, and the process proceeds to step S6. The configuration may be advanced.

  In step S6, the process control unit 112 executes a detergent dissolving process (detergent dissolving process). For example, the process control unit 112 controls the water supply solenoid valve 16 to supply water to the powder detergent input chamber 73a and the liquid detergent input chamber 73b through the water supply pipe. The detergent and the water in the powder detergent feeding chamber 73 a and the liquid detergent feeding chamber 73 b flow from the water supply port 2 a to the water receiving portion 54 of the outer tank 2. When water is supplied to a predetermined amount, the process control unit 112 controls the water supply solenoid valve 16 (for example, closes the first solenoid valve) to stop the water supply. Then, the process control unit 112 executes a detergent dissolving operation (detergent dissolving operation). After a predetermined time (for example, 10 seconds) has elapsed, the generated high concentration detergent solution is pumped up to the water spray nozzle 223 at the top of the outer tank 2 and sprayed. In order to uniformly disperse the small amount of the high concentration detergent liquid on the laundry 207 as much as possible, the drum 3 is rotated at high speed just before the spraying so that the laundry 207 is attached to the inner surface of the drum 3 by centrifugal force. While maintaining the rotation of the drum 3, the high concentration detergent solution pumped up to the water spray nozzle 231 at the upper part of the outer tank 2 is dispersed by the circulation pump 18. The high-concentration detergent solution penetrates the laundry 207 toward the inner wall of the drum 3 by the velocity energy at the time of water spraying and the centrifugal force acting after reaching the laundry 207. Also, since the drum 3 is rotating at a rotational speed at which the laundry 207 adheres by centrifugal force, for example, when the drum 3 is rotated at 80 r / min, the spreading time is about 26 times for the same point on the drum even for 20 seconds. It can be flooded with water.

  After the high concentration detergent solution is soaked in the laundry 207, warm air is generated in the next step and sprayed on the laundry 207 impregnated with the high concentration detergent solution, thereby suppressing the power consumption and efficiently washing the temperature. Can improve the cleaning power.

  In step S7, the process control unit 112 executes the pre-washing washing process (pre-washing washing process). In the pre-washing / washing step, warm air heated by the heater 237 is blown to the laundry 207 by the blower fan 20 to spread the laundry 207 to which the high concentration detergent solution has been dispersed. When a predetermined time has elapsed since the start of the process, the feed water solenoid valve 16 is controlled to raise the water level of the wash water in the outer tank 2. Then, when the water level in the outer tank 2 rises to the predetermined water level WL1 (WL0 <WL1) with respect to the water level WL0 in the detergent dissolving step, the water supply is stopped, the pre-washing step is ended, and the process proceeds to step S8. .

  When the pre-washing process of step S7 is completed, the process control unit 112 executes a main-washing process. Here, in the main washing step, the laundry 207 collected in the lower part in the drum 3 is lifted by the rotation of the drum 3 and dropped from above in the drum 3 to give a mechanical force to the laundry 207 to strike it. It is a process of washing. The main washing step is composed of a main washing one step (first main washing step) of step S8 and a main washing two step (second main washing step) of step S9.

  In step S8, the process control unit 112 executes a first main washing step (first main washing step). Specifically, the process control unit 112 controls the circulation pump 18 to have a predetermined flow rate PF1, and the washing water sucked from the drainage port 21 is supplied from the sprinkling nozzle 231 provided at the opening of the outer tank 2 to the drum. 3 is sprayed with water, and the motor M10a is controlled to rotate the drum 3 at a predetermined rotation speed DR1, whereby the laundry 207 in the drum 3 is washed. At this time, heating up to a predetermined temperature (40 ° C. in the present embodiment) selected and set is performed by energizing the heater 237 to discharge the circulation pump between the watering of the laundry 207 from the watering nozzle by the circulation pump. It switches to the side of the water sprinkler 232 of the unit 236 to heat the hot water. When the set temperature is high or when the washing load is large, the blower fan 20 is driven to blow warm air into the drum 3 while the rotation of the drum 3 and the circulation pump 18 are in intermittent operation. It mainly warms up the laundry 207 and the washing water hydrated. If the water level of the washing water in the outer tank 2 is higher than the outer tank outlet 80, the drum 3 is continuously rotated and the washing water in the bottom of the outer tank 2 is stirred by the tumbling operation, and the circulation pump is Then, the water is supplied to the water sprayer 232 of the heater unit 236 and heated. At this time, by simultaneously supplying water to the sprinkler 232 and supplying water to the sprinkle nozzle of the outer tub 2 at the switching valve of the circulation pump outlet, the washing temperature including the laundry 207 can be efficiently raised. In addition, by adjusting the additional water supply rate into the drum, it is possible to adjust the increase rate of the cleaning temperature in accordance with the heating capacity of the heater unit 623. That is, since the rapid temperature drop of the laundry 207 can be suppressed, it is possible to improve the cleaning performance such as attached solid dirt which is easily dropped particularly in a high temperature environment.

  When the predetermined time (T1) has elapsed, the process control unit 112 ends the first main washing process, and proceeds to step S9. In step S9, the process control unit 112 executes a second main washing step (second main washing step). Specifically, the process control unit 112 controls the water supply solenoid valve 16 to supply water to the outer tank 2 up to a predetermined water level WL2 (WL1 <WL2). In addition, the process control unit 112 controls the circulation pump 18 so as to have a predetermined flow rate PF2 (PF1 <PF2), and the sprinkling nozzle 231 provided at the opening of the outer tank 2 with the washing water sucked from the drainage port 21. The water is sprayed into the drum 3 and the motor M10a is controlled to rotate the drum 3 at a predetermined rotational speed DR2 (DR1> DR2), so that the laundry 207 in the drum 3 is washed. Also in this step, when the cleaning temperature is maintained, the water sprinkling from the water sprinkling nozzle to the laundry 207 by the circulation pump is stopped or intermittently operated, and the water supply frequency to the water sprinkling device 232 of the heater unit 623 is increased. When a predetermined time (T2) has elapsed, the process control unit 112 stops the motor M10a and the circulation pump 18, and drives the drainage pump 230 to drain the cleaning water in the outer tank 2.

  In step S9, the process control unit 112 executes a first rinse process (first rinse process). For example, in the first rinsing step, the process control unit 112 controls the water supply solenoid valve 16 and the drainage valve V1 to repeat water supply and drainage, and controls the motor M10a to rotate the drum 3 to rotate the circulation pump 18 Under control, rinse water sucked from the drainage port 21 is sprayed from the water spray nozzle 231 provided at the opening of the outer tank 2 into the inside of the drum 3 to rinse the clothes. Then, when a predetermined time has passed, the process control unit 112 stops the motor M10a and the circulation pump 18, and drives the drainage pump 230 to drain the rinse water in the outer tank 2.

  In step S11, the process control unit 112 executes a second rinse process (second rinse process). For example, in the second rinse step, the process control unit 112 stops the drainage pump 230 and controls the water supply solenoid valve 16 to supply water to the outer tank 2 up to a predetermined water level. In addition, the process control unit 112 controls the motor M10a to rotate the drum 3 and controls the circulation pump 18 to control the circulating water from the drainage port 21 from the water spray nozzle 223 provided at the opening of the outer tank 2 Water the interior of 3 and rinse the laundry 207. Then, when a predetermined time has passed, the process control unit 112 stops the motor M10a and the circulation pump 18, and drives the drainage pump 230 to drain the rinse water in the outer tank 2.

  In step S12, the process control unit 112 executes a dewatering process (dewatering process). Specifically, the process control unit 112 drives the drainage pump 230 and controls the motor M10a to rotate the drum 3 at a higher speed than in the main washing process, thereby centrifugally dewatering the laundry 207. Then, when a predetermined time has elapsed, the process control unit 112 stops the motor M10a, stops the drainage pump 230, and ends the washing course (washing to rinsing to dewatering). In this process, the blower fan 20 is driven to energize the heater 237 to send warm air into the drum 3 to warm the water contained in the laundry 207 and reduce the surface tension to promote dehydration. It is also good.

  In addition, in the main washing process in step S7 and step S8, it is set as the driving | operation characteristic which suppresses the blackening of the laundry 207, and squeaky, and it demonstrates it focusing on the mechanism below. Although the second main washing step (step S9) is performed after the first main washing step (step S8), the water level WL2 of the second main washing step is higher than the water level WL1 of the first main washing step (WL1 <WL2). That is, by increasing the amount of wash water in the outer tub 2, the dirt removed from the laundry 207 can be dispersed in the wash water, and the dirt removed from the laundry 207 adheres to the laundry 207 again. It is possible to suppress "darkening of the laundry" caused by the above.

  Further, the rotation speed DR2 of the drum 3 in the second main washing step is slower than the rotation speed DR1 of the drum 3 in the first main washing step (DR1> DR2). A position at which falling is started when the laundry 207 accumulated below in the drum 3 is lifted by rotation of the drum 3 and dropped from above in the drum 3 by making the rotational speed DR2 of the drum 3 slower than the rotational speed DR1 Becomes lower. That is, the drop impact (mechanical force) applied to the laundry 207 to be hit and washed can be suppressed, and the "washing of the laundry" can be suppressed. Further, the drop impact (mechanical force) can be suppressed also by raising the water level WL2, and the "washing of the laundry" can be suppressed. On the other hand, the rotational speed DR1 of the drum 3 is rotated at a higher rotational speed than when all the pieces of laundry 207 stuck to the inner wall of the drum 3 are lifted by gravity until they are lifted upward > Gravity), there can be no problem even if the laundry 207 is operated so as not to fall like tapping. That is, the washing operation may be performed by causing the laundry 207 to pass a circulation amount larger than that of the normal washing operation while suppressing the batting washing as much as possible. However, there is a possibility that the washing performance by tapping may be reduced, whereas the flow rate PF2 of the circulation pump 18 in the second main washing step is made larger than the flow rate PF1 of the circulation pump 18 in the first main washing step. (PF1 <PF2), it is possible to ensure the cleaning performance by the water flow. For example, the circulation flow rate of the circulation pump 18 is preferably 30 L / min to 80 L / min. In addition, the operation time (T1) of the first main washing step and the operation time (T2) of the second main washing step are the operation time (T2) of the second main washing step as the operation time of the first main washing step It is desirable to set so as to be longer than T1) (T1 <T2). By doing this, it is possible to further suppress the "washing of laundry".

  In step S13, the process control unit executes a drying process (drying process). Specifically, the motor M10 is controlled to repeat the rotation of the drum 3 at about 40 r / min with the interval of 30 seconds between the left and right 30s. That is, the operation is performed at a lower rotational speed than when the laundry 207 clings to the inner wall of the drum 3. During this time, the blower fan 20 is driven continuously or intermittently to blow air into the drum 3, but the heater 237 is also energized continuously or intermittently so as to have a predetermined warm air temperature. During the drying process, the drainage pump 230 is intermittently driven to drain water remaining from the lower part of the drum 3 to the vicinity of the lint filter 222. Also, the air supply air 235 and the exhaust air 234 for ventilation are opened to control the humidity of the circulating air. The opening degree is determined based on the data table prepared in advance according to the drying course and load, and the air temperature T2 at the outlet of the drum 3 toward the intake side of the blower fan 20 after the specified time has elapsed or the initial temperature When it is confirmed that the temperature has risen above the specified value, it is judged that the drying has progressed, and the air intake is reduced by narrowing the opening degree of the intake duster 235 and the exhaust duster 234 in order to raise the warm air temperature level. Is preferred. When the specified time has elapsed from the start of drying, the end is judged. Specifically, a difference ΔT2 between the drum 3 outlet temperature T2 directed to the suction side of the blower fan 20 at the initial stage of drying and T2 at the time of determination is determined, and a difference ΔT4 between the initial value of the atmosphere T4 in the housing and the value at the time of determination When the ratio .DELTA.T2 / .DELTA.T4 becomes equal to or greater than a specified value, the drying is ended. That is, when the change of the warm air temperature at the outlet of the drum 3 becomes larger than a predetermined value with respect to the change of the atmospheric temperature, it is determined that the evaporation of water from the laundry 207 is cured and the drying is ended.

  Further, in the present embodiment, a steam drying function is provided, and when this function is selected, a small amount of water is sprayed to the heater 237 in the second half or in the middle of the drying step to generate steam with warm air, It can suppress drying wrinkles. In particular, by adjusting the amount of water supplied and the timing according to the drying load, drying can be performed with a fine finish with less wrinkles by drying while giving a suitable degree of moisture that can stretch the wrinkles.

  As described above, according to the operation process of the drum-type washing and drying machine according to the first embodiment, hot water and warm air are generated according to the amount of washing water of each course at the time of washing. The so-called cleaning temperature can be efficiently heated to the appropriate value. At the time of drying, by adjusting the amount of hot air and the amount of steam, it is possible to secure a fine finish. Furthermore, it is possible to suppress the darkening of the clothes and the stiffness of the clothes.

  Although the explanation was made based on the 40 ° C. washing course, choose a normal washing course for the laundry which is discolored with temperature, and which is anxious to fade, or the laundry where the shrinkage of the fiber is noticeable due to heating. Can. In this case, the power consumption can be reduced. Furthermore, in the case of laundry other than white matter and thin patterned matter where blackness is anxious, and towel where anxiety is anxious, if it is a laundry that rather saves water, it is possible to select a water-saving laundry course. In this case, by setting the circulation flow rate to 15 to 20 L / min without raising the water level in the main washing step, the amount of water used for the entire washing can be suppressed.

(Example 2)
FIG. 7 is a cross-sectional view showing the basic configuration of the heater unit 236 in the second embodiment of the present invention. The heater unit 236 in the present embodiment has a configuration in which a water supply pipe 246 capable of supplying tap water can be provided between the water sprinkler 232 and the heater 237. The water supply pipe 246 is provided with a larger number of fountain holes 241 which can be fountains in the water flow holes 238 of the water sprayers 232 than the number of water flow holes 238 of the water sprayers 232. By supplying tap water at the start of the washing operation or at the end of the washing / drying operation to fountain it, it is possible to maintain a state in which something causing clogging such as lint is removed around the water flow hole 238 of the sprinkler 232. . Furthermore, in the present embodiment, the overflow portion 242 is provided at the top of the water sprayer 232. With such a configuration, even if the water passage hole 238 is blocked, the heater 237 is sprayed with water through the guide tool 233 by overflowing from the overflow portion 242 as shown in FIG. 7B. Therefore, even if the water flow hole 238 is blocked during operation, it is not necessary to overheat the heat exchange duct 231.

(Example 3)
FIG. 8 is a cross-sectional view showing the basic configuration of the heater unit 236 in the third embodiment of the present invention. In the heater unit 236 in the present embodiment, a plurality of protrusions 243 are provided on the guide tool 233, and the protrusions 243 pass through the meandering portions of the two rows of the heaters 237 in contact, and the protrusions The protrusions 243 and the protrusions 243 of the other guide 233 separated from the heater 237 are arranged in a staggered manner. With such a configuration, the two lines of cleaning water sprinkled to the two rows of the heater 237 and the guide tool 233 can be mixed with the flow down, so efficient heating can be achieved.

(Example 4)
FIG. 9 is a sectional perspective view showing the basic configuration of the heater unit 236 in the fourth embodiment of the present invention. The heater unit 236 in the present embodiment is fixed to the heat exchange duct 231 via the universal joint portion 244 with respect to the heat exchange duct 231. With such a configuration, the posture of the heater unit 236 in the heat exchange duct 231 can always be kept substantially perpendicular to the ground even when the installation state of the washing and drying machine main body is suddenly inclined. Since it can do, the water spray state to heater 237 can be stabilized. Further, it is preferable that the bellows 239 in this case have a sufficient movable range.

Reference Signs List 1 case 1a, 1b side plate 1c front cover 1d back surface back cover 1e top surface cover 1h base 2 outer tank 2a water supply port 2b circulating air outlet 3 drum 4 conductivity detection means 5 damper 7 detergent input 9 door 9a door glass 9b Door frame 10 Rubber bellows M10 drive unit
M10a Motor M10b mounting tool
12, 13 Operation switch 14 Display 15 Water supply unit (water supply means)
DESCRIPTION OF SYMBOLS 16 Water supply solenoid valve 16a Water supply hose connection port 18 Circulation pump 20 Blower fan 21 Drain port 26 Drainage hose 27 Accelerometer 28 Rotation detection device 29 Air flow duct 34 Water level sensor 54 Water receiving part
54a bottom surface 54b circulation discharge port 71 drawer type tray 73 detergent input chamber 73a powder detergent input chamber 73b liquid detergent input chamber 74 softener input chamber 80 outer tank outlet

100 Control device (operation control means)

110 microcomputer 111 operation pattern database 112 process control unit 113 rotational speed calculation unit 114 clothing weight calculation unit 115 conductivity measurement unit 116 detergent amount / washing time determination unit 117 turbidity determination unit 118 threshold storage unit

123 heater switch 124 fan drive circuit 125 circulation pump drive circuit

V1 Drain valve T1 to T4 Temperature sensor

Reference Signs List 203 blow-out nozzle 207 laundry 208 fluid balancer 209 lifter 210 metal flange 211 main shaft 212 rubber bellows tube 215 bellows hose

222 Waste thread filter 223 Watering nozzle 224 Watering mechanism

230 drainage pump
231 Heat exchange duct
232 Sprinkler 233 Guide 234 Excavator Topira 235 Air Supply Topira
236 heater unit
237 Heater 238 Water flow hole 239 Bellows 240 Water receiving portion 241 of duct 240 Fountain hole 242 Overflow portion 243 Protrusion portion 244 Universal joint portion 245 Switching valve 246 Water supply pipe


EC1 (Before first washing step) conductivity (electrical conductivity)
EC2 (after the first main wash step) conductivity (electrical conductivity)

Claims (2)

An outer tank capable of storing liquid inside;
A substantially cylindrical drum or inner tub rotatably supported in the outer tub and containing the laundry;
A blower for blowing air to the outer tank;
An air flow path connecting the outer tank and the air flow means;
Heat exchange means for heating the air in the air flow path;
A water sprinkling device for sprinkling water in the outer tank from an upper portion of the heat exchange means;
A water receiving portion for receiving water flowed down from the heat exchange means;
A washer / dryer characterized by comprising. In the washing and drying machine according to claim 1,
The washing and drying machine according to claim 1, wherein the heat exchange means includes a guide for adjusting the flow of the water from the water sprayer and the air circulating the air blowing means and the outer tub.

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