JP2018148966A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dry laundry in a short time by efficiently applying hot air in a drying process in a washing and drying machine in which a heat source for generating hot water and a heat source for generating hot air are integrated into one.SOLUTION: The washing and drying apparatus comprises: an outer tub capable of storing liquid inside; a substantially cylindrical type drum which is rotatably supported in the outer tub and in which laundry is accommodated, air blow means for blowing air to the outer tub and the drum, an air blowing path connecting the outer tub and the drum to the air blow means, and heat exchange means for exchanging heat with water or air in the air blowing path. A partition wall is provided so as to have an opening through which a portion provided with the heat exchange means of the air blowing path is communicated with the outer tub.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a washing and drying machine that consistently performs washing and drying of clothes and the like.

  In general, a washing dryer is a washing mode in which a laundry is put into a rotatable inner tub and a washing process, a rinsing process, a dehydration process and a drying mode in which only the drying process is performed, and a washing process from the washing process to the drying process. It has a drying mode. There is a drum type with the drum rotation axis inclined horizontally or with the front facing upward, and a so-called vertical type with the rotation axis substantially perpendicular to the installation surface. explain. In the washing process and the rinsing process, the drum is rotated at a low speed, and the tumbling operation of lifting the laundry accumulated below the drum and dropping it from above the drum is performed. By this tumbling operation, washing and rinsing are performed by applying mechanical force to the laundry. In particular, the cleaning associated with this operation is called tapping. At the time of the dehydration process, the drum is rotated at a high speed, and centrifugal dehydration is performed by pushing out moisture from the laundry by the centrifugal force generated by the rotation.

  Also, in the washing process, a circulation pump is provided to enhance the washing effect, and the washing water in the washing tub (outer tub) 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 ensure 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 it can save water compared to the vertical washing machine. .

  Further, as one method for increasing the cleaning power, the cleaning temperature is increased. That is, the cleaning power can be increased by increasing the temperature of the laundry and the cleaning water, thereby enhancing the function of the detergent enzyme and promoting the diffusion of the surfactant in the cleaning water. For washing in a state where the drum is sufficiently filled with washing water and the washing water is always stored in the lower part of the outer tub, the heating means provided at the lower part of the outer tub is used to warm the washing water at the lower part of the outer tub. There is warm water washing that warms the entire circulation system including the outer tub by pumping up with a circulation pump and hanging it on the laundry from above the drum.

  Further, in the drying process in the laundry dryer, heating of the circulating air is required when the basic method is hot air drying in which warm air of low humidity and high temperature is applied to the laundry. When using a heater as the heating source, in order to minimize the heat dissipation loss from the heated hot air, it is necessary to heat the air by providing a heater in the duct or fan unit that guides the air blown from the fan to the drum. preferable. Even when warming the laundry not only in the drying process but also in the initial stage of the washing process with a small amount of washing water, when warm air is applied to the laundry, the garment overlaps the lower part of the drum and moves upward from the drum tumbling operation. It is preferable to apply warm air to the laundry at the timing of falling after being lifted by the laundry.

  Japanese Patent Application Laid-Open No. 2007-167385 (Patent Document 1) discloses a hot air heater and a hot water heater as one heater. Patent Document 1 states that “a water tank provided in the machine, a duct provided in a side surface portion of the water tank, a blower that blows air into the water tank through the duct, and a heat generating means provided in the duct. And a washing machine characterized by comprising the above. Here, “the air sent from the blower through the duct is heated by the heating means inside the duct to be warmed and supplied to the inside of the aquarium so that the laundry inside the aquarium can be dried. During washing, water is supplied to the inside of the aquarium, so that the water also accumulates inside the duct, which is heated by heating means provided in the inside of the duct to warm it, and further, the water inside the aquarium is further drained. It is disclosed that the laundry can be washed with warm water. Further, Japanese Patent Laid-Open No. 5-76683 (Patent Document 2) states that “a rotating tank in which a water tank is rotatably mounted and a number of dewatering holes are formed in the tank wall, and a rotating blade which is rotatably mounted in the rotating tank. In a fully automatic washing machine in which a heater is disposed between the water tub and the rotating tub, and hot water washing is performed by energizing the heater, the air in the water tub is moved between the water tub and the rotating tub. A circulation path for circulation is formed, and a ventilation temperature detector for detecting the ventilation temperature is arranged in the ventilation path, and the energization control of the heater is performed based on temperature information from the ventilation temperature detector by rotating the rotor blade. A fully automatic washing machine characterized in that a drying control means is provided that circulates warm air through the ventilation path ”is disclosed.

JP 2007-167385 A JP-A-5-76683

  In the washing machine or the washing and drying machine described in Patent Documents 1 and 2, the hot water is supplied by blowing the air heated by the heater that serves both hot water and hot air into the outer tub or the water tub, and the heater is submerged. The communication part to the heater for washing water in the case of making is used in common. For this reason, since the hot air blowing port heated by the heater is provided at the bottom of the outer tub or the water tub, the air heated by the heater is always blown from the bottom, and a small amount of water is supplied during the drying process and washing. Therefore, in a process with little washing water, hot air cannot be efficiently applied to the laundry because it is blown to the laundry through a small hole or gap in the dehydration tank or the inner tank having a large ventilation resistance.

  Furthermore, since it is not a so-called duct structure that secures the flow of air passing through the heater against the generation of hot air, the heat exchange efficiency is lowered, the temperature of the heater is likely to rise, and the heat resistance temperature of the member is exceeded. If the heater input is lowered in order to avoid this, the temperature of the hot air is lowered, and as a result, the amount of heat of the hot air cannot be secured, and it takes time to heat the laundry and the washing water.

  In order to solve such problems, a washing and drying machine according to the present invention includes an outer tub capable of storing liquid therein, a substantially cylindrical shape that is rotatably supported in the outer tub and accommodates laundry. A drum, a blowing means for blowing air to the outer tub and the drum, a blowing path connecting the outer tub and the drum and the blowing means, and a heat exchange means for exchanging heat with water or air in the blowing path. And a partition having an opening communicating with the outer tub is provided in a portion of the air flow path provided with the heat exchange means.

  Moreover, the blower outlet of a ventilation path | route is provided in the position higher than the said outer tank lower part connected with the partition which has the said opening.

  According to the present invention, in the drying step or the step of less washing water due to a small amount of water at the time of washing, the heater can be taken out above the liquid surface, so that the partition wall having an opening communicating the air from the blowing means with the outer tub The laundry can be efficiently warmed by blowing air to the outer tub through and blowing air into the outer tub or drum from the outlet at the end of the blowing path.

It is an external appearance perspective view which shows the drum type washing-drying machine which concerns on embodiment of this invention. It is a schematic sectional drawing of the right side surface 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 watering mechanism and warm air circulation mechanism which concern on embodiment of this invention. It is a mimetic diagram showing a schematic structure of a heat exchange duct concerning an embodiment of the present invention. It is the schematic diagram which showed the aspect which the air flow branches at the time of the heat exchange duct ventilation which concerns on embodiment of this invention. It is a block diagram which shows the structure of the control apparatus of the drum type washing-drying machine which concerns on embodiment of this invention. It is process drawing explaining the driving | operation process of the washing driving | operation (washing-rinsing-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 drum in the 2nd Example of this invention. It is the fragmentary sectional view shown about another shape of the door in the 2nd Example of this invention. It is the fragmentary sectional view which showed another shape of the opening part of the partition plate of this invention.

  Hereinafter, examples will be described with reference to the drawings. In the washing process, the basic configuration of the drum type washing and drying machine and the operation of each component in the washing process to the drying process will be described.

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

  First, the appearance will be described. A skeleton is constructed by combining a side plate 1a mainly made of a steel plate and a resin molded product and a reinforcing material (not shown) on the upper part of the base 1h, and a front cover 1c and an upper cover 1e are attached thereon. The casing 1 is formed by the above. 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.

  Next, the schematic structure of the washing / drying machine and the operation and role of each component in the washing process to the drying process will be briefly described. As shown in FIG. 2, an outer tub 2 is provided almost at the center inside the housing 1 shown in FIG. 1. The outer tub 2 is supported by a plurality of lower dampers 5. A drum 3 that is rotatably provided is provided inside the outer tub 2, and the laundry 207 is loaded by opening the door 9. The door 9 itself is obtained by fixing a door glass 9a to a door frame 9b, and the door 9 is attached to the housing using a hinge (not shown). A fluid balancer 208 is provided on the outer periphery of the opening of the rotatable drum 3 as necessary to reduce vibration due to unbalance of the laundry 207 during dehydration. A plurality of lifters 209 for lifting the laundry 207 are provided inside the drum 3. The rotatable drum 3 is directly connected to a drum driving motor M10a via a main shaft 211 connected to a metal flange 210. Alternatively, a so-called belt drive configuration in which a pulley fixed to the main shaft and a motor fixed to the outer tub are connected via a belt to drive the drum, which is a different method from the present embodiment.

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

  FIG. 3 is a perspective view schematically showing a drum watering mechanism and a hot air circulation mechanism according to an embodiment of the present invention. The water sprinkling mechanism 224 for the drum is configured to sprinkle water from the water receiving portion 54 forming a part of the heat exchange duct 231 at the lower portion of the outer tub 2 to the upper portion of the drum 3 through the circulation pump 18. The mechanism for circulating the hot air heats the air from the circulating air outlet 2b of the outer tub 2 through the blower fan 20 through the heat exchange duct 231 in which the heater 237 is accommodated, and blows it out from the blowing nozzle 203 into the drum 3. This configuration circulates warm air. In addition to the sprinkling mechanism 224 that forcibly pumps the cleaning water up to the upper part of the outer tub 2 and sprays it independently of the rotation of the drum 3, the cleaning water stored in the outer tub 2 is placed inside the outer tub 2. It is also provided with a sprinkling action that is scraped up by the rotating drum 3 and sprayed onto the laundry. In addition, a drain port 21 (see FIG. 3) is provided for drainage on the bottom surface 54a of the water receiving part 54 that forms part of the heat exchange duct 231, and through the waste thread filter 222 and the drain pump 230, The drainage hose 26 leads to the water in the water receiving portion 54 and the drainage pump 230 can drain the water.

  A blower duct 20 that is a blower and a blower duct 29 that guides the blown air from the outlet of the blower fan 20 into the heat exchange duct are fixed to the housing 1 (not shown) apart from the outer tub 2. On the other hand, the heat exchange duct 231 for heating the hot air, the hot air duct 231 and the blowout nozzle 203 are fixed to the outer tub 2, and the blowout nozzle 203 is the central axis of the drum 3 which is rotatable as viewed from the front of the washer / dryer. It is fixed to the front side of the outer tub 2 closer to the front as viewed from the side of the washer / dryer. Since the blower fan 20 has a structure fixed to the housing, the outlet of the blower duct 29 connected to the blower fan 20 and the heat exchange duct 231 are connected by a flexible bellows tube 212 made of a flexible structure. Absorbs vibrations. The longitudinal expansion / contraction direction is connected so as to be substantially perpendicular to the rotation axis of the outer tub 2, and the vibration of the outer tub 2 is absorbed. Similarly, a bellows hose 215 is also provided for connection on the suction side of the ventilation duct 232 and the blower fan 20. Temperature sensors (not shown) are 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.

  Further, as described above, the drain port 21 is provided in the water receiving portion 54 forming a part of the heat exchange duct 231. The upstream portion 231a (see FIG. 4) and the downstream portion 231b connected to the air duct 29 and the hot air duct 233 are provided with an inclination for allowing the washed water or the like that has flowed down to the water receiving portion 54. This inclination is set so that the drum 3 can flow down quickly even when the drum 3 is inclined several degrees during operation. The blowing nozzle 203 is not limited to the front side of the outer tub 2 and may be blown from the back of the drum 3 where the motor M10a (see FIG. 2) is provided. In this case, it is preferable that the rear surface of the drum 3 has a mesh shape (not shown) and the ventilation resistance is minimized.

  When the laundry or laundry drying course is selected and the operation is started, a detergent melting process is performed in which the detergent that has been thrown in is melted and sprayed onto the laundry 207. In the initial stage of the washing process, the detergent is dissolved with a water supply amount smaller than the total amount of water used until the end of the process to make the washing water a high-concentration detergent liquid. Disperse high-concentration detergent solution by frying. Further, the high-concentration detergent liquid that could not be scraped up is sprayed by forced circulation by the circulation pump 18. For this reason, normally, the outer tub 2 contains a laundry 207 soaked with a high-concentration detergent solution and a small amount of detergent solution that has not been completely sprayed on the water receiving portion 54 below the outer tub 2. By rotating the drum 3, the laundry 207 is lifted to the upper part of the drum 3, and if the washing is continued based on the tumbling operation in which the laundry 207 is dropped to the lower part by gravity, the high-concentration detergent liquid soaked in the laundry 207 is squeezed out. However, if a highly concentrated detergent solution that can fill the water receiving portion 54 is accumulated, it can be sprayed again by the scooping operation of the washing water accompanying the rotation of the drum 3. Further, the circulation pump 18 is driven intermittently as necessary, and the squeezed high-concentration detergent liquid is forcibly sprayed on the laundry 207. During this operation, the washing performance can be improved by raising the so-called washing temperature of the high-concentration detergent solution and the laundry 207. In the present embodiment, in this washing step, the blower fan 20 is driven to generate warm air in the heat exchange duct 231 to warm the high concentration detergent solution and the laundry 207.

  FIG. 4 is a perspective view showing a schematic structure of the heat exchange duct 231 in the present embodiment. The portion containing the heater 237 is formed integrally with the water receiving portion 54 of the outer tub 2, and the water receiving portion 54 is provided with an upstream portion 231 a and a downstream portion 231 b of the heat exchange duct. A partition plate 238 having an opening 239 is provided at the boundary between the outer tub 2 and the water receiving portion 54. When air is allowed to flow from the upstream portion 231 a to the downstream portion 231 b, a part of the air can be ventilated from the opening 239 of the partition plate 238 into the outer tub 2.

  On the other hand, in the washing process in which the amount of water enough to immerse the laundry 207 in the drum 3 is filled, the water in the outer tub 2 and the water receiving portion 54 is stirred through the opening 239.

  FIG. 5 is a schematic diagram showing an aspect in which the air flow branches when the heat exchange duct 231 is ventilated. As for the air volume branched from the water receiving portion 54 to the outer tub 2, a part of the air flow amount flowing from the upstream portion 231 a to the downstream portion 231 b is sequentially branched through the opening 239. In this embodiment, the heater 237 has a two-stage configuration with respect to the height direction of the outer tub 2, and the branched air can be heated to a high temperature by sufficiently contacting the heater 237. In addition, as shown in the excerpt of FIG. 4, if the opening density of the partition plate 238 is low on the upstream portion 231a side and increases toward the downstream portion 231b side, the amount of air to be branched is increased A more uniform distribution can be achieved with respect to the flow direction from 231a toward the downstream portion 231b. As a result, the drum 3 and the laundry 207 therein can be warmed more uniformly. Further, the opening density of the partition plate 238 is increased at both ends with respect to the air flow direction from the upstream portion 231a to the downstream portion 231b in the heat exchange duct, and is decreased at the central portion corresponding to the heater storage portion. The amount of air branched from the receiving portion 54 to the outer tub 2 can be adjusted to be small. For mixing the water in the water receiving portion 54 and the water in the outer tub 2 by the rotation of the drum 3 at the time of heating with hot water, a portion having a high opening density at both ends is used to remove the water from the water receiving portion 54. There is no problem in heating the flooded water over the bottom of the wall.

  A process from the washing process to the drying process in the drum type washing and drying machine configured as described above will be described in detail with reference to FIGS. In addition, there are models that can be set up as a pre-washing operation in which the washing process to the dehydration process are performed separately from the washing process for the normal washing course operation. Described for driving.

  The laundry 207 is put into the rotatable drum 3, water is supplied in a state where the drain pump 230 is stopped, and the drum 3 is rotated to wash the laundry 207. The washing process is roughly divided into a detergent dissolving process, a pre-washing process, and a main washing process. The detergent dissolving step is a step of presenting the amount of detergent and the time required for washing by sensing the amount of cloth at the start of washing, dissolving the introduced detergent with water, and spraying washing water on the laundry 207 in the drum 3. The water supplied to the detergent charging section is guided to the water receiving section 54 located below the drum 3 together with the detergent. When the circulation pump 18 is driven, the water in the water receiving portion 54 enters the suction port (not shown) of the circulation pump 18 through the waste thread filter 222 from the drain port 21. The washing water of the high-concentration detergent boosted by the circulation pump 18 is returned again to the water receiver 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). By repeating this circulation, a high-concentration detergent solution in which the detergent is dissolved with a small amount of water is generated. The output of the circulation pump 18 has a specification sufficient to pump up the washing water corresponding to the maximum washing load up to the watering nozzle 223 provided above the outer tub 2. For this reason, if it circulates in the circulation path of the above-mentioned detergent dissolution process, the required power of the circulation pump 18 will eventually change into heat energy, and will raise the temperature of a high concentration detergent liquid. In the present embodiment, the generated high-concentration detergent liquid is pumped up to the watering nozzle 223 provided above the outer tub 2 by changing the rotation direction of the circulation pump 18 and is sprayed onto the laundry 207 in the drum 3. The That is, at the outlet of the circulation pump 18, a route leading to the upper part of the outer tub 2 and a route returning to the water receiving portion 54 without being sprayed as described above are required. For this purpose, discharge ports (see FIG. 3) connected to the respective paths are provided on the outer periphery of the casing of the circulation pump 18, and the rotation direction of the circulation pump 18 is changed, and the discharge first communicated according to the rotation direction. The route is switched by discharging from the outlet side. Alternatively, there is no problem in function even if the outlet of the circulation pump 18 is provided at one location and branched on the downstream side to switch the flow path.

  In the pre-washing process, the laundry 207 sprayed with the high-concentration detergent solution is tapped and washed by a tumbling operation. Since the laundry 207 is in a state where a high-concentration detergent liquid is retained, dirt can be separated from the laundry 207 by the action of the detergent components and mechanical force. As described above, since the high-concentration detergent solution in which the detergent is dissolved with a small amount of water does not remain in the water receiving portion 54 after being sprayed on the laundry 207, the heater 237 is energized and the blower fan 20 is driven. , Hot air can be sent into the drum 3. As a result, the laundry 207 can be washed while being warmed. In this case, since a smaller amount of the high-concentration detergent solution and the laundry 207 are heated than when a large amount of the cleaning water is heated and the laundry 207 is heated together with the cleaning water, the washing can be efficiently heated. Moreover, since water occupies the gaps between the fibers, heat conduction is better than dry laundry 207, and heating can be performed more efficiently. Also, by increasing the temperature of the highly concentrated detergent solution, the surface tension of the retained high concentration detergent solution can be lowered, and by increasing the temperature of the laundry 207, along with the air in non-moist areas in the fiber Since the fibers can swell, the penetration of the high concentration detergent solution into the fibers can be further promoted. As a result, more dirt can be separated from the fibers in a short time. Since the separated dirt is rapidly dispersed in the high-concentration detergent solution that is retained in water, it can be prevented from aggregating and reattaching again. The hot air blowing nozzle 203 and the watering nozzle 223 are arranged opposite to the central axis when the washing / drying machine is viewed from the front. By adopting a relative arrangement in which the direct contact between the warm air and the water flow is promoted in this way, even if foaming due to stirring of the laundry 207 impregnated with the high-concentration detergent liquid occurs, the foamed water spray or the surface of the laundry 207 By efficiently applying hot air to the adhering foam, the foam can be quickly eliminated.

Further, depending on the dirt, there are cases where the amount of washing water applied to the laundry 207 is smaller (the detergent concentration is higher) and drops more, and conversely, the amount of washing water is larger (the detergent concentration is lower). There is a difference in the driving force for removing dirt acting on both, which can be interpreted as follows. The surfactant, which is one of the main components of the detergent, promotes the wetting of the fibers, and has a function of negatively charging by attracting the surface potential of dirt and cloth to the negative polarity of the surfactant. As a result, there is an effect of increasing the repulsive force between the soils floating from the laundry 207 or between the fibers and the soils. For this reason, the higher the concentration of the surfactant, the greater the repulsive force against the van der Waals force can be obtained for cleaning solid dirt adhering mainly by van der Waals force. Therefore, solid stains and the like are generally better removed when the surfactant concentration is higher.
On the other hand, the dissolution rate of so-called water-soluble soil that is easily dissolved in water or washing water varies depending on the concentration of the soil that becomes a solute with respect to washing water as a solvent. A solution having a low concentration of dirt has a high dissolution rate, whereas a solution having a high concentration has a low dissolution rate. For this reason, if the density | concentration of the stain | pollution | concentration currently disperse | distributed in the wash water which the laundry 207 retains is made low, a stain | pollution | contamination will fall from the laundry 207 further. In other words, the washing water retained by the laundry 207 needs to be replaced with washing water having a very low concentration of dirt, or a measure to reduce the concentration of dirt is required. That is, the role of the surfactant for this type of dirt is to largely hold the dirt peeled off from the laundry 207 and prevent aggregation and re-adhesion, so if a certain detergent concentration is satisfied, The dependence of detergent concentration on soil removal is small.

  Moreover, raising the cleaning temperature for both stains results in an increase in cleaning power. As for the former, since the molecular diffusion in the washing water is promoted by increasing the temperature, more surfactant can be adhered to the cloth surface and the dirt surface, and the repulsive force can be enhanced. Also for the latter, the diffusion of the surfactant in the washing water is improved, and wetting of the cloth surface can be promoted. Further, 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 amount of water in the water receiving portion 54 is increased, and the water level is raised. This water level is maintained at a level sufficient to draw up wash water from the water receiving portion 54 by the circulation pump 18 and continuously spray it from the watering nozzle 223 at the top of the outer tub 2. That is, it is a step of securing a sufficient washing time and effectively removing dirt that was difficult to remove in the pre-washing step where the amount of washing water was small. The spraying from the watering nozzle 223 may be continuous or intermittent. Specifically, while a lot of dirt is still attached to the backside of the laundry 207 and the like, the washing water that the laundry 207 retains is always kept by continuously spraying and promoting stirring of the washing water. It can be replaced with low-contamination washing water. After that, after most of the dirt has been removed, the cleaning efficiency is better if the remaining dirt is removed mainly by the mechanical force of tapping washing. Therefore, it is preferable that the latter half of the spraying is intermittent spraying so as not to disturb the mechanical force. Moreover, since the amount of power consumption can be suppressed by making the driving force of the circulation pump 18 intermittent, it is preferable from the viewpoint of energy saving.

  The watering nozzle 223 is fixed to the outer tub 2 at a position above the center axis of the drum 3 that is rotatable when viewed from the front of the washing and drying machine and at a front side that is closer to the front when viewed from the side of the washing and drying machine. The ejection range from the nozzle 223 is spread at a wide angle with respect to the radial direction of the drum 3 (see FIG. 3). In this main washing process, the laundry 207 collects a wide area, lifts the laundry 207 accumulated in the lower part of the drum 3 by rotating the drum 3, lifts the washing water, and drops it from the upper part in the drum 3. Wash and wash 207 with mechanical force. As the drum diameter is larger, a synergistic effect of widespreading and tapping is obtained, and the time of the main washing process can be shortened. In this process, in order to raise the washing temperature of the laundry 207 and the washing water, the washing water is heated by energizing the immersed heater 237. The washing water in the outer tub 2 and the water receiving portion 54 is agitated by the driving force of the circulation pump 18, but can be agitated through the partition plate 238 having the opening 239 by the rotation of the drum 3 without the circulation pump 18. As described above, by using one heater 237, the laundry 207 is heated by warm air at a low water level during washing, and the washing water is heated by immersing the heater 237 during washing so that the laundry 207 is heated. Warm air can be created by the heater 237 during warming and further drying.

  If necessary, the main washing step includes a first main washing step and a second main washing step executed after the first main washing step, supplying water at the end of the first main washing step, and supplying the second main washing step. By increasing the amount of water in the washing step more than the amount of water in the first main washing step, the amount of water swept up by drum rotation is increased. 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. Further, the rotational speed of the drum-driven motor M10a in the second main washing process is set lower than the rotational speed of the motor M10a in the first main washing process.

  The main washing process is mainly performed in order to separate stains such as the inside of clothes and pockets that are difficult to wash in the pre-washing process with a small amount of water from the laundry 207. In order to remove various stains, it is more preferable to use a combination of at least two processes in which the amount of water and the rotational speed of the drum driving motor M10a are changed as described above. In the first main washing process, in order to increase the rotation speed of the drum 3, all the laundry 207 lifted upward with the rotation of the drum 3 does not fall downward, but most of the laundry 207 is applied to the inner wall of the drum 3 by centrifugal force. It is rotating with the drum 3 while being pressed. Since the washing water is sprayed from the circulation pump 18 there, the flow rate of the washing water through the laundry 207 is increased. As a result, the dirt is easily dissolved from the laundry 207. In the subsequent second main washing step, the rotational speed of the drum 3 is made lower than that in the first main washing step, the centrifugal force is weakened, and the fixation of the laundry 207 to the drum 3 is suppressed as much as possible. This is a process that places emphasis on tapping which knocks down from above. Accordingly, it is possible to easily remove mainly hydrophobic dirt by applying mechanical force to the laundry 207. When the laundry 207 is knocked down from the upper side of the drum 3, the level of the washing water stopped below the drum 3 is increased and the amount of circulating water is increased, so that the laundry 207 is more than necessary. It can also prevent the fibers from colliding directly and pressing the fibers.

  In the rinsing process, the drainage pump 230 is driven to drain the cleaning water, and then the drainage pump 230 is stopped and the rinsing water is supplied into the outer tub 2 to a predetermined water level. Thereafter, the drum 3 is rotated, and the laundry 207 and the rinse water are stirred and rinsed (mainly see FIG. 2).

  In the dehydration step, the drain pump 230 is driven to drain the rinse water in the outer tub 2, and the drum 3 is rotated to centrifugally dehydrate the laundry 207. The dehydration speed is increased to a set speed according to the load unless the laundry 207 is balanced and the current value of the motor M10a exceeds the upper limit. When the dehydration speed is increased and the drum 3 rotates at high speed, vibration is transmitted to the outer tub 2 and the outer tub 2 itself vibrates slightly. Since the heat exchange duct 231 fixed to the outer tub 2 and the air duct 29 fixed to the housing 1 are connected by the bellows tube 212, the bellows tube 212 is interlocked to absorb part of the vibration. . In addition, by blowing warm air into the drum 3 in the dehydration step, the surface tension of the washing water contained in the laundry 207 can be lowered to improve the dehydration performance (mainly see FIG. 2).

  In the drying process, low humidity is applied to the laundry and the air from the high humidity drum outlet containing evaporated water vapor is returned to the suction side of the blower fan 20 to partially ventilate the outside air to lower the humidity. After that, heating with a heater 237 is performed to perform hot air drying with low humidity. The blower fan 20 is driven to energize the heater 237 to send warm air into the drum 3. The hot air is divided into an air volume sent from the partition plate 238 to the outer tub 2 in the heat exchange duct 231 and an air volume sent from the blow nozzle 203 into the drum 3 through the hot air duct 233 through the heat exchange duct 231. . Since the moisture content of the laundry 207 is high at the initial stage of drying, the washing 207 that is dropped and lifted with the rotation of the drum 3 is piled up closely so that the ventilation resistance is reduced. large. For this reason, the warm air from the partition plate 238 can indirectly warm the laundry 207 by warming the drum 3. On the other hand, the warm air from the blow-out nozzle 203 can warm the laundry 207 at the time of dropping in the lifting and dropping operation. As drying progresses and the moisture content of the laundry 207 decreases, the laundry 207 becomes lighter, so that the spread of the laundry 207 during the lifting and dropping operation associated with the rotation of the drum 3 increases, and the area that the hot air hits also increases. Furthermore, since the packing density at which the cloths overlap with each other at the time of dropping becomes smaller, it becomes easier for warm air from below to pass. In this way, heat exchange with warm air from the two systems enables efficient heating and drying.

  In the present embodiment, the exhaust door 234 and the air supply door 235 provided in the ventilation duct 232 communicating with the suction port (not shown) of the blower fan 20 are opened, and a part of the circulating air is exhausted from the exhaust door 234. Then, approximately the same amount of air in the housing as that is taken in from the air supply door 235. By replacing a part of the circulating air with the air in the housing that communicates with the ambient outside air, the humidity of the high-humidity air that has come out of the drum 3 can be lowered. In particular, since the moisture content of the laundry 207 is large in the first half of drying, it is preferable to keep the humidity of the warm air blown from the blowing nozzle 203 into the drum low by increasing the amount of replacement of the circulating air with the housing air ( 2 and 3). Since the moisture content of the laundry 207 decreases in the latter half of the drying, it is necessary to increase the heat transfer amount due to the temperature gradient inside the fiber by increasing the temperature of the fiber surface in order to promote the evaporation of the laundry 207 from the inside of the fiber. There is. Therefore, the temperature of the hot air is increased to increase the amount of heating of the laundry 207, and the amount of replacement of the exhaust air that is partly exhausted from the ventilation duct 232 and the same amount of body air into the heat exchange duct is increased. It is preferable to suppress and raise the temperature level of the circulating air. However, when the drying load is small and changing the temperature and humidity level of the air has little effect on the drying time and power consumption, the air exchange amount in the ventilation duct 232 as described above is fixed throughout the drying process. However, there is no problem.

  As described above, according to the washer / dryer according to the present embodiment, during the drying process, the warm air that is guided from the lower part of the outer tub 2 to the drum 3 and the temperature that passes through the heat exchange duct 231 and is blown out from the blowing nozzle 203 into the drum. Heating performance from the warm air to the laundry 207 can be enhanced by heating from two directions by wind, and heating can be performed efficiently. Furthermore, by heating the circulating air with the heater 237 and replacing the air with a humidity equivalent to the environmental atmosphere at the installation location in the ventilation duct 232, a warm air with a low humidity can be secured. In addition, when water is supplied into the air duct 29 and the air in the duct is water-cooled and dehumidified (cooling water is drained from the lowest part of the air duct 29 to the outside of the air duct 29), the humidity of the environmental air at the installation location is increased. It is high and can be dried stably even under use conditions where it is difficult to lower the humidity even after replacement.

  Next, the control flow of the control device 100 and each component will be described. FIG. 6 is a block diagram showing a configuration of the control device 100 of the drum type washer / dryer according to the embodiment of the present invention. As a basic operation, control device 100 (operation control means) controls energization to motor M10a (drive device M10), water supply unit 15, and heater 237 so that a washing operation can be performed. Furthermore, if the electrical conductivity detection means 4 is provided, the electrical conductivity of the washing water in the outer tub 2 detected by the electrical conductivity detection means 4 in the control device 100 is calculated, and the soft finish contained in the rinse water is calculated. Presence / absence determination (discrimination with respect to the reference concentration), dehydration process shortening determination, rinsing process shortening determination, and the like can be performed. As a result, a fine washing and drying operation can be performed according to the type of detergent, water quality and the amount of dirt on the clothes.

  As shown in FIG. 6, the control device 100 includes a microcomputer (hereinafter referred to as “microcomputer”) 110, a drive circuit, operation switches 12 and 13, conductivity detection means 4, input circuits from various sensors, and the like. . The microcomputer 110 receives various information signals in a user operation, a washing process, and a drying process. The microcomputer 110 is connected to the driving device M10 (motor M10a), the water supply electromagnetic valve 16, the drainage pump 230, the blower fan 20, and the like through a driving circuit, and controls opening / closing, rotation, and energization thereof. In addition, the display 14 and the buzzer (not shown) are controlled in order to inform the user of information related to the drum type washing machine.

  Next, the operation process of the drum type washing machine according to the first embodiment will be described mainly from the viewpoint of the control algorithm. FIG. 7 is a process diagram illustrating an operation process of a washing operation (washing—rinsing—dehydrating—drying) in the drum type washing / drying machine according to the first embodiment.

  In step S <b> 1, the process control unit 112 receives a course selection input for the operation process of the drum type washing and drying machine (course selection). Here, the user opens the door 9, puts the laundry 207 to be washed inside the drum 3, and closes the door 9. And a user selects and inputs the course of a driving process by operating the operation switches 12 and 13. 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 operation pattern from the operation pattern database 111 based on the input operation process course, and proceeds to step S2. In the following description, it is assumed that a 40 ° C. hot water washing course (washing without prewashing—twice rinsing—dehydration) is selected.

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

  In step S <b> 3, the process control unit 112 determines whether or not a pre-washing process, which is one of course selections, is selected, and performs branch selection of a control algorithm. Hereinafter, it is assumed that no prewash is selected.

  In step S4, the process control unit 112 executes a process of calculating the detergent amount / operation time (determination of detergent amount operation time). Specifically, the process control unit 112 controls the water supply electromagnetic valve 16 to supply water directly to the water supply port 2 a of the outer tub 2. The conductivity measuring unit 115 detects the conductivity (hardness) of the supplied water. Further, the temperature of the supplied water is detected by the sensor T1. Thereafter, the water supply electromagnetic valve 16 is controlled to end the water supply to the outer tub 2.

  The detergent amount / washing time determination unit 116 determines the amount of detergent to be put in and the operation time through map search based on the amount of cloth detected in step S2, the electrical conductivity (hardness) of water, and the temperature of water. In other words, the amount of detergent and the operation time that can secure the washing performance for each amount of cloth, water conductivity and temperature are stored as a data map, the measured value is compared with the map, and the range where the measured value fits Determine the amount of detergent and operating time based on the inside. Then, the process control unit 112 displays the determined amount of detergent and operating time on the display unit 14. In addition, although it demonstrated as supplying water to the outer tank 2 and detecting the electrical conductivity (hardness) and water temperature of water, it is not restricted to this. For example, the electrical conductivity (hardness) and water temperature of water at the previous operation may be stored in a storage unit (not shown) of the microcomputer 110 and used.

  In step S5, the process control unit 112 executes a detergent charging waiting process (detergent charging waiting process). For example, the process control unit 112 waits for a predetermined time and proceeds to step S6. Note that the process control unit 112 determines that the detergent has been thrown in by the means (not shown) for detecting opening / closing of the detergent throwing unit 7 and that the detergent has been thrown, and then proceeds to step S6. The structure which advances may be sufficient.

  In step S6, the process control unit 112 executes a detergent melting process (detergent melting process). For example, the process control unit 112 controls the water supply electromagnetic valve 16 to supply water to the powder detergent charging chamber 73a and the liquid detergent charging chamber 73b through the water supply pipe. The detergent and water in the powder detergent charging chamber 73a and the liquid detergent charging chamber 73b flow from the water supply port 2a to the water receiving portion 54 of the outer tub 2 (see FIG. 3). When supplying water up to a predetermined amount of water, the process control unit 112 controls the water supply electromagnetic valve 16 to stop water supply. And the process control part 112 performs a detergent melt | dissolution operation | movement (detergent melt | dissolution operation | movement). Specifically, the process control unit 112 controls the circulation pump 18 to discharge water and detergent sucked from the drain port 21 from the circulation discharge port 54 b of the water receiving unit 54. The water and the detergent discharged from the circulation discharge port 54b flow through the water receiving portion 54 and are circulated toward the drain port 21 (see FIG. 3). Thereby, water and a detergent are stirred and a detergent is melt | dissolved in water. After a predetermined time (for example, 10 seconds) has elapsed, the generated high-concentration detergent solution is pumped up to the watering nozzle 223 at the top of the outer tub 2 and sprayed. In order to spread a small amount of high-concentration detergent solution as uniformly as possible on the laundry 207, the drum 3 is rotated at a high speed immediately before spreading, and the laundry 207 is stuck 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 watering nozzle 231 at the upper part of the outer tub 2 by the circulation pump 18 is sprayed. The high-concentration detergent liquid permeates the laundry 207 toward the inner wall of the drum 3 by the speed energy at the time of watering and the centrifugal force that works after reaching the laundry 207. Further, since the drum 3 rotates at a rotational speed at which the laundry 207 sticks with centrifugal force, for example, when the drum 3 is rotated at 80 r / min, even if the spraying time is 20 seconds, it is approximately 26 times for the same point on the drum. Can be bathed in sprinkled water.

  After the high-concentration detergent solution is soaked in the laundry 207, hot air is efficiently generated and blown in the next step, thereby reducing the power consumption and improving the cleaning power.

  In step S7, the process control unit 112 executes a pre-cleaning cleaning process (pre-cleaning cleaning process). In the pre-washing washing process, since the high-concentration detergent liquid is sprayed on the laundry 207, the water level of the high-concentration detergent liquid remaining in the water receiving portion 54 is lower than the heater 237 position. The hot air heated by the heater 237 is blown to the laundry 207 by the blower fan 20 on the laundry 207 sprayed with the high-concentration detergent solution, and the hot air is spread and heated. In this step, since the laundry 207 is in a state where a high-concentration detergent solution is retained, the apparent thermal conductivity of the laundry 207 is high and can be efficiently heated. In addition, by raising the temperature, the surface tension and viscosity of the high-concentration detergent liquid that is held in water can be reduced, and the fibers of the laundry 207 are further swollen, further promoting the penetration of the high-concentration detergent liquid into the fibers. it can. Thereby, dirt can be efficiently separated from the fiber. The separated dirt can be quickly dispersed in the high-concentration detergent solution that has been retained in water, so that it can be prevented from aggregating and reattaching again. When a predetermined time has elapsed from the start of the process, the water supply electromagnetic valve 16 is controlled to raise the level of the cleaning water in the outer tub 2. Then, when the water level of the cleaning water in the outer tub 2 rises to a predetermined water level WL1 (WL0 <WL1) with respect to the water level WL0 at the time of the detergent dissolving process, the water supply is stopped, the prewashing process is terminated, and the process proceeds to step S8. .

  When the pre-washing process in step S7 is completed, the process control unit 112 executes the main washing process. Here, the main washing process is to apply mechanical force to the laundry 207 by lifting the laundry 207 accumulated in the lower part of the drum 3 by the rotation of the drum 3 and dropping it from the upper part in the drum 3. This is a washing process. The main washing process is composed of one main washing process (first main washing process) in step S8 and two main washing processes (second main washing process) in step S9.

  In step S8, the process control unit 112 executes a first main washing process (first main washing process). Specifically, the process control unit 112 controls the circulation pump 18 so as to have a predetermined flow rate PF1, and the cleaning water sucked from the drain port 21 is drummed from the water nozzle 231 provided at the opening of the outer tub 2. 3 is sprinkled with water, and the drum M 3 is rotated at a predetermined rotational speed DR1 by controlling the motor M10a, thereby washing the laundry 207 inside the drum 3. Since the water level of the water receiver 54 is made higher than the heater 237 position by water supply, the heater 237 is submerged. The heater 237 of the water receiving part 54 is energized to warm the additional supplied water to a predetermined temperature (40 ° C.) that is selected and set. Further, when the set temperature is high or the washing load is large, the fan 3 is driven and the hot air is blown into the drum 3 by rotating the drum 3 and the circulation pump 18 in an intermittent operation. Hot water is mainly used for washing and water containing water. When the drum 3 is continuously rotated and the additional water supply is sprayed by the normal circulation pump 18, the temperature of the laundry 207 is drastically lowered. In this way, the drum 3 and the circulation pump are blown while blowing warm air. By making the watering by 18 an intermittent operation, the water contained in the laundry 207 can be replaced little by little, so that a rapid temperature drop of the laundry 207 can also be suppressed. In particular, it is possible to improve the cleaning performance such as attached solid dirt that is easily removed in a high temperature environment.

  If predetermined time (T1) passes, the process control part 112 will complete | finish a 1st main washing process, and will progress to step S9. In step S9, the process control unit 112 executes a second main washing process (second main washing process). Specifically, the process control unit 112 controls the water supply electromagnetic valve 16 to supply water to the outer tub 2 up to a predetermined water level WL2 (WL1 <WL2). Further, the process control unit 112 controls the circulation pump 18 to have a predetermined flow rate PF2 (PF1 <PF2), and the water sprayed from the drain port 21 is a watering nozzle 231 provided at the opening of the outer tub 2. Then, water is sprinkled into the drum 3 and the drum M is rotated at a predetermined rotational speed DR2 (DR1> DR2) by controlling the motor M10a, thereby washing the laundry 207 inside the drum 3. When the predetermined time (T2) elapses, the process control unit 112 stops the motor M10a and the circulation pump 18, and drives the drain pump 230 to drain the cleaning water in the outer tub 2.

  In step S9, the process control unit 112 performs the first rinsing process (first rinsing process). For example, in the first rinsing step, the process control unit 112 controls the water supply electromagnetic valve 16 and the drainage pump 230 to repeat the water supply and drainage, and also controls the motor M10a to rotate the drum 3 to turn the circulation pump 18 on. The rinsing water sucked from the drain port 21 is controlled and sprinkled from the water nozzle 231 provided in the opening of the outer tub 2 into the drum 3 to rinse the clothes. And when predetermined time passes, the process control part 112 will stop the motor M10a and the circulation pump 18, will drive the drain pump 230, and will drain the rinse water in the outer tank 2. FIG.

  In step S11, the process control unit 112 executes a second rinsing process (second rinsing process). For example, in the second rinsing process, the process control unit 112 stops the drain pump 230 and controls the water supply electromagnetic valve 16 to supply water to the outer tub 2 to a predetermined water level. Further, the process control unit 112 controls the motor M10a to rotate the drum 3 and controls the circulation pump 18 so that the rinse water sucked from the drain port 21 is discharged from the watering nozzle 223 provided in the opening of the outer tub 2. Rinse the inside of 3 and rinse the laundry 207. And when predetermined time passes, the process control part 112 will stop the motor M10a and the circulation pump 18, will drive the drain pump 230, and will drain the rinse water in the outer tank 2. FIG.

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

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

  Further, the rotational speed DR2 of the drum 3 in the second main washing process is slower than the rotational speed DR1 of the drum 3 in the first main washing process (DR1> DR2). The position at which the fall starts when the laundry 207 collected in the lower part of the drum 3 is lifted 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, a drop impact (mechanical force) applied to the laundry 207 to be washed is suppressed, and “stiffness of the laundry” can be suppressed. Also, by raising the water level WL2, the drop impact (mechanical force) can be suppressed, and "stiffness of the laundry" can be suppressed. On the other hand, the rotational speed DR1 of the drum 3 is rotated at a rotational speed faster than the laundry 207 attached to the inner wall of the drum 3 by the centrifugal force is lifted upward (the centrifugal force). > Gravity), all the laundry 207 may be operated so as not to fall like tapping. That is, the washing operation may be performed by passing a larger amount of circulating water through the laundry 207 than in a normal washing operation while suppressing tapping washing as much as possible. However, there is a possibility that the washing performance by tapping washing may be deteriorated. For this, the flow rate PF2 of the circulation pump 18 in the second main washing step is larger than the flow rate PF1 of the circulation pump 18 in the first main washing step. By doing so (PF1 <PF2), the washing performance by the water flow can be ensured and avoided. For example, the circulation flow rate of the circulation pump 18 is desirably 30 L / min or more and 80 L / min or less. Further, the operation time (T1) of the first main washing process and the operation time (T2) of the second main washing process are longer than the operation time (T2) of the second main washing process (T2). It is desirable to set it to be longer than T1) (T1 <T2). By doing so, it is possible to further suppress the “stiffness of the laundry”.

  In step S13, the process control unit executes a drying process (drying process). Specifically, the motor M10 is controlled to rotate the drum 3 at left and right for 30 s at about 40 r / min, and the rotation is repeated across the interval 10 s. That is, the operation is performed at a lower rotational speed than the laundry 207 sticks 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 hot air temperature. During the drying process, the drain pump 230 is driven intermittently to drain water remaining from the lower part of the drum 3 to the vicinity of the waste thread filter 222. In addition, the air supply door 235 and the exhaust door 234 for ventilation are opened to adjust the humidity of the circulating air. This opening degree is determined based on a 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 lapse of the specified time is the initial temperature. When it is confirmed that the air pressure has risen above the specified value, it is determined that the drying has progressed, and in order to increase the hot air temperature level, the opening degree of the intake and exhaust air outlets 235 and 234 is narrowed to reduce the ventilation amount. Is preferred. Next, when a specified time has elapsed from the start of drying, an end determination is made. Specifically, a difference ΔT2 between the drum 3 outlet temperature T2 toward the intake side of the blower fan 20 at the initial stage of drying and T2 at the time of determination is obtained, and the initial drying value of the temperature sensor T4 that measures the atmosphere in the housing is determined. The difference ΔT4 from the value is obtained, and when the ratio ΔT2 / ΔT4 is equal to or greater than the specified value, the drying is terminated. That is, when the change in the warm air temperature at the outlet of the drum 3 becomes larger than the regulation with respect to the change in the ambient temperature, it is determined that the moisture evaporation from the laundry 207 has been stopped, and the drying is finished.

  As described above, according to the operation process of the drum-type washing / drying machine according to the first embodiment, hot air is generated according to the amount of washing water in each course during washing, and the washing temperature of the laundry 207 and washing water is increased. Can be efficiently heated to an appropriate value. Further, when drying, the air is blown to the heat exchange duct 231 to create warm air by the heater 237, and the hot air from the water receiving portion 54 forming a part of the heat exchange duct 231 into the outer tub 2 passes through the heat exchange duct 231. Thus, the laundry 203 can be efficiently warmed by the warm air coming from the blowing nozzle 203 to the drum 3, and can be dried in a short time.

  Although the explanation was based on the 40 ° C washing course, select a normal washing course for laundry that is fading or fading to temperature, or for laundry where shrinkage of fibers is noticeable due to heating. Can do. In this case, power consumption can be reduced. In addition, you can choose a water-saving washing course for laundry that wants to save water, except for white goods and thin patterns that are darkened, and towels that are worried about wrinkles. In this case, the water level in the entire washing can be suppressed by setting the circulating flow rate to 15 to 20 L / min without raising the water level in the main washing step.

(Example 2)
FIG. 8 is a perspective view showing the basic configuration of the heat exchange duct 231 in the second embodiment of the present invention. In this embodiment, the door 236 that can close the opening 239 is provided in the opening 239 of the partition plate 238. The door 236 opens downward in a normal state, and when the duct is ventilated, the door 236 receives the fluid force of the airflow flowing through the heat exchange duct 231, so that the door 236 moves in a direction to close the opening 239. Since the door 236 is in an open state during the washing process, the washing water is passed through the opening 239 to the water receiving portion 54 and further stirred by the rotation of the drum 3. Washing water can be heated by energizing the heater 237 soaked as necessary. In the drying process, when the air is blown from the blower fan 20 to the heat exchange duct 231, the angle of the door 236 changes in the closing direction according to the wind force, and the amount of hot air branched from the partition plate 238 to the outer tub 2 side can be adjusted. For example, in the initial stage of drying, the amount of air blown from the blower fan 20 is weakened, the door 236 is opened almost completely, and the entire amount of the air blown is passed to the outer tub 2 side, so that the drum 3 and the laundry 207 are placed in the outer tub 2. Preheat from the bottom. Thereafter, the circulation air amount and the heating amount of the heater 237 are increased, and the blowout from the blowout nozzle 203 into the drum 3 and the drying from the inside of the laundry 207 are promoted, so that the drying can be performed more efficiently. Note that the door 236 of the present embodiment adjusts the opening degree by the balance between its own weight and wind force, but if a drive means (not shown) is provided, regardless of the fluid force of the airflow flowing through the heat exchange duct 231, It can be arbitrarily adjusted according to the amount of the laundry 207 and the temperature of the water supply. For example, when the amount of the laundry 207 is large, the door 236 is closed, and the amount of circulating air blown to the laundry 207 from the blowing nozzle 203 is increased, so that the drying can be efficiently performed. When the water supply temperature in the washing process is low, the door 236 is opened at the initial stage of drying to increase the amount of circulating air applied to the lower part of the drum 3 from the water receiving portion 54 to warm the drum 3 and the laundry 207 more uniformly. This reduces drying unevenness and allows efficient drying. In this embodiment, the hot air duct 233 is provided inside the door 9. With such a configuration, a sufficient cross-sectional area of the air path from the heat exchange duct 231 to the blowing nozzle 203 can be secured, so that the ventilation resistance can be minimized. Further, since the closed space inside the door 9 can contribute to the heat insulation of the hot air duct 233, the heat dissipation loss from the hot air duct 233 can be further reduced, and the power consumption can be reduced.

  FIG. 9 is a cross-sectional view showing a modification of the door 236 in the second embodiment. In this embodiment, an opening / closing auxiliary tool 241 made of a shape memory alloy is provided on the hinge 240 of the door 236. Since the temperature of the circulating air is low at the initial stage of drying, the door 236 is in an open state as in washing. However, as the drying progresses, the circulating air temperature level from the outlet of the drum 3 also increases. Thus, the opening / closing assisting tool 241 is deformed in the direction in which the door 236 is closed. That is, at the end of drying, the amount of air branched from the heat exchange duct 231 to the outer tub 2 side is reduced, the amount of air blown to the laundry 207 in the drum 3 from the blowing nozzle 203 is increased, and heating from the inside of the laundry 207 is further performed. Therefore, drying can be performed in a shorter time.

  FIG. 10 is a cross-sectional view showing a modification of the shape of the opening 239 of the partition plate 238. In the present embodiment, a so-called labyrinth structure portion 242 having increased resistance to communication between the heat exchange duct 231 and the outer tub 2 through the opening 239 is provided. By adopting such a configuration, the wash water at the time of washing can be passed through without increasing the resistance at the time of passage because the water is passed by gravity. In order to pass through the opening 239 and branch to the outer tub 2 side when blowing air to the heat exchange duct 231, it is possible to pass the air in a direction opposite to the main flow direction of air. It can be difficult. Thereby, since the ratio of the amount of air blown from the blower nozzle 203 to the laundry 207 in the drum 3 through the heat exchange duct 231 through the heat exchange duct 231 can be constantly increased, the wrinkle during drying is reduced. can do.

DESCRIPTION OF SYMBOLS 1 Housing | casing 1a, 1b Side plate 1c Front cover 1d Rear cover 1e on the back Upper cover 1h on the upper surface 1h Base 2 Outer tank 2a Water supply port 2b Circulating air outlet 3 Drum 4 Conductivity detection means 5 Damper 7 Detergent inlet 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)
16 Water supply solenoid valve 16a Water supply hose connection port 18 Circulation pump 20 Blower fan 21 Drain port 26 Drain hose 27 Acceleration sensor 28 Rotation detection device 29 Blower duct 34 Water level sensor 54 Water receiving part
54a Bottom surface 54b Circulating discharge port 71 Drawer type tray 73 Detergent input chamber 73a Powder detergent input chamber 73b Liquid detergent input chamber 74 Soft finish agent input chamber 78 Inner tank 79 Pulsator 80 Side surface with increased drain hole opening ratio

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 / wash 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-T4 Temperature sensor

203 Blowing 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 Sprinkling nozzle 224 Sprinkling mechanism

230 Drainage pump
231 Heat exchange duct
232 Ventilation duct 233 Hot air duct 234 Exhaust door 235 Air supply door
236 Tobira
237 Heater 238 Partition plate 239 Opening 240 Hinge 241 Opening / closing assisting tool 242 Labyrinth structure

EC1 Conductivity (electric conductivity) (before the first main washing process)
EC2 conductivity (after the first main washing process)

Claims (3)

An outer tub capable of storing liquid therein, a substantially cylindrical drum rotatably supported in the outer tub, and storing laundry; a blowing means for blowing air to the outer tub and the drum; A ventilation path connecting the tank and the drum and the blowing means, and a heat exchange means for exchanging heat with water or air in the blowing path,
The washing / drying machine, wherein a portion of the air flow path provided with the heat exchange means includes a partition wall having an opening communicating with the outer tub. In the washing and drying machine according to claim 1,
A washer / dryer characterized in that the outlet of the air passage is provided at a position higher than the lower part of the outer tub communicating with the partition having the opening. In the washing and drying machine according to claim 1 or 2,
A structure having a function of adjusting an opening area of the partition wall having the opening, and capable of adjusting a ratio of an air volume to be blown into the outer tub through the opening and an air volume to be blown into the drum from the outlet of the blowing path A washing and drying machine characterized by that.

Images