JP2006217978A - Laundry washer/dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laundry washer/dryer capable of sufficiently dehumidifying air including moisture evaporated from the laundry, and enhancing the efficiency in dehumidifying air. <P>SOLUTION: A water tub 4 is disposed inside an outer casing 1, and a drum 5 is rotatably disposed inside the water tub 4 for storing the laundry. A drying system 26 for drying the laundry inside the drum 5 has a dehumidifying heat-exchange plate 17 with an open cross-sectional shape, disposed between the water tub 4 and the drum 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a washing and drying machine.

  Conventionally, as a washing and drying machine, there is a drum type washing and drying machine disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2001-113079). The drum type washing and drying machine includes an outer box, a water tank disposed in the outer box, a drum rotatably disposed in the water tank, and a drying system for drying the laundry in the drum. It has.

  The drying system includes an external dehumidifier made of resin having a closed cross-sectional shape, a blower that sucks air in the dehumidifier, a heating unit that heats the air blown out by the blower, and the heating unit heated. And a duct for guiding air into the drum.

  The dehumidifier is attached to the rear surface of the water tank and extends in a direction perpendicular to the horizontal plane. Moreover, the hole which connects the space in a dehumidifier and the space in a water tank is provided in the lower part of the said dehumidifier.

  According to the drum type washing / drying machine having the above-described configuration, the blower operates during the drying operation, and high-temperature and high-humidity air containing water in the water tank flows into the dehumidifier from the hole. On the inner wall of the dehumidifier, water flows from the upper side to the lower side and falls. The water cools the high-temperature and high-humidity air, so that moisture in the air is condensed, and the air is dehumidified to become low-temperature and low-humidity. The low-temperature and low-humidity air is sent to a heating unit by a blower, heated to high-temperature and low-humidity by the heating unit, and then blown out into the drum through a duct. This high-temperature, low-humidity air takes away moisture from the laundry in the drum, becomes hot and humid, and goes into the dehumidifier. The laundry is dried by such air circulation.

By the way, in the said conventional drum type washing-drying machine, the lint of a laundry enters into a dehumidifier with air, and adheres and accumulates on the inner wall of a dehumidifier. This yarn waste prevents the cooling water from falling, and the cooling water does not sufficiently spread the inner wall of the dehumidifier. As a result, since the contact area between the cooling water and the air is reduced, there is a problem that the efficiency of heat exchange between the cooling water and the air is reduced, and the dehumidifying efficiency of the air is reduced.
JP 2001-113079 A

  Then, the subject of this invention is providing the washing-drying machine which can fully dehumidify the air containing the water evaporated from the laundry, and can improve the dehumidification efficiency of the air.

In order to solve the above problems, the washing and drying machine of the present invention is:
An outer box,
A water tank disposed in the outer box;
A rotating tub disposed in the water tub so as to be freely rotatable;
A drying system for drying the laundry in the rotating tub,
The drying system includes a heat exchange plate for dehumidification having an open cross-sectional shape disposed between the water tank and the rotating tank.

  According to the washing dryer having the above-described configuration, during the drying operation, for example, cooling water is supplied to the dehumidifying heat exchange plate, so that air containing moisture evaporated from the laundry is removed between the dehumidifying heat exchange plate and the cooling water. Since both can be cooled, the air can be sufficiently dehumidified.

  Further, even when foreign matter such as lint is accumulated on the heat exchange plate for dehumidification during the drying operation, the heat exchange plate for dehumidification has an open cross-sectional shape. . Therefore, the contact area between the air containing moisture evaporated from the laundry and the heat exchange plate for dehumidification is not reduced by foreign matter. That is, the contact area between the air and the heat exchange plate for dehumidification can be kept large. As a result, the efficiency of heat exchange between the air and the heat exchange plate for dehumidification is improved, and the dehumidification efficiency of the air can be increased.

  Moreover, since the dehumidification efficiency of the air containing the water evaporated from the laundry can be increased, the amount of cooling water supplied to the dehumidification heat exchange plate can be reduced. Therefore, the usage-amount of the said cooling water can be reduced. That is, water can be saved.

  Further, since the dehumidifying heat exchange plate is disposed between the rotating tub and the water tub, the distance between the laundry and the dehumidifying heat exchange plate is shortened, and the air flowing from the laundry to the dehumidifying heat exchange plate is reduced. Pressure loss is reduced. Therefore, noise due to the air can be reduced.

  In addition, when the air containing moisture of the laundry is directed to the heat exchange plate for dehumidification with a blower, for example, the distance between the laundry and the heat exchange plate for dehumidification is short, so even if the output of the blower is small, the air Can be sent to the heat exchange plate. Therefore, the blower can be reduced in size.

  In addition, since the heat exchange plate for dehumidification is arranged between the rotating tub and the water tank, the heat exchange plate for dehumidification is different from the external dehumidifier in the conventional drum type washing and drying machine, Connection parts such as packing are not required. Therefore, the washing / drying machine can reduce the number of parts.

  In the washing / drying machine of one embodiment, the heat exchange plate for dehumidification is disposed at the lower part of the region in the water tank.

  According to the washing and drying machine of the above embodiment, since the heat exchange plate for dehumidification is disposed at the lower part of the region in the water tank, the washing water for washing the laundry and the rinsing water for rinsing the laundry In addition, the heat exchange plate for dehumidification can be immersed or submerged. Therefore, even if foreign matter such as lint is left on the dehumidification heat exchange plate after the drying operation, the foreign matter is reliably removed from the dehumidification heat exchange plate by performing a washing operation or a rinsing operation. Can do.

  Moreover, since the heat exchange plate for dehumidification is arranged in the lower part of the region in the water tank, the empty space in the lower part of the region in the water tank can be used effectively. Therefore, the washing / drying machine can be miniaturized.

  In one embodiment, the dehumidifying heat exchange plate is disposed so as to be parallel or inclined with respect to a horizontal plane.

  According to the washing and drying machine of the above embodiment, when cooling water is supplied to the dehumidifying heat exchange plate, the dehumidifying heat exchange plate is parallel or inclined with respect to the horizontal plane. Can be held on top for a long time. Accordingly, the contact time between the air containing moisture of the laundry and the cooling water is prolonged, and the air can be sufficiently cooled with the cooling water.

  The laundry dryer according to an embodiment includes a suction guide that guides the air so that the air containing moisture evaporated from the laundry flows along the heat exchange plate for dehumidification.

  According to the washing and drying machine of the above embodiment, since the air containing moisture evaporated from the laundry flows along the heat exchange plate for dehumidification by the guide of the suction guide, the air efficiently contacts the heat exchange plate for dehumidification Can be made. Therefore, the heat exchange performance of the dehumidifying heat exchange plate can be improved.

  Moreover, since the air containing moisture evaporated from the laundry is guided by the suction guide so as to flow along the heat exchange plate for dehumidification, the occurrence of turbulent flow due to the air can be prevented. Therefore, the pressure loss of the air flowing along the dehumidifying heat exchange plate is reduced, and the air flow rate can be prevented from decreasing.

  Moreover, since the fall of the air volume of the air which flows along the said heat removal plate for dehumidification can be prevented, foreign substances, such as a lint etc. adhering to the heat exchange plate for dehumidification, can be blown away.

  In the washing / drying machine of one embodiment, the suction guide is formed integrally with the water tank.

  According to the washing and drying machine of the above embodiment, since the suction guide is formed integrally with the water tank, the number of parts can be reduced.

In the washing and drying machine of one embodiment,
The drying system has a heater unit that heats air dehumidified by the heat exchange plate for dehumidification,
A rib is provided between the heater unit and the dehumidifying heat exchange plate.

  According to the washing and drying machine of the above embodiment, since the rib is provided between the heater unit and the heat exchange plate for dehumidification, radiant heat from the heater unit is shielded by the rib. Therefore, the heater unit does not adversely affect the dehumidification heat exchange plate, and the heat exchange performance of the dehumidification heat exchange plate can be prevented from being lowered.

  In the washing / drying machine of one embodiment, the heat exchange plate for dehumidification is fixed to the water tank with a wire made of stainless steel.

  According to the washing and drying machine of the above embodiment, the dehumidification heat exchange plate is fixed to the water tank by the wire made of stainless steel, and therefore the dehumidification heat exchange plate can be easily fixed to a complicated portion of the water tank.

  Moreover, fixing the heat exchange plate for dehumidification to the water tank can be further facilitated by providing the water tank with a hole through which the wire can be inserted and removed.

  In one embodiment, the dehumidifying heat exchange plate is made of metal and has irregularities on the surface.

  According to the washing and drying machine of the above embodiment, since the dehumidifying heat exchange plate is made of metal, the dehumidifying heat exchange plate can be easily and sufficiently cooled with the cooling water. Therefore, the heat exchange performance of the dehumidifying heat exchange plate can be improved.

  Further, since the dehumidifying heat exchange plate is made of metal, the processability of the dehumidifying heat exchange plate is high, and the surface of the dehumidifying heat exchange plate can be easily provided by pressing.

  Moreover, when the said press work is used, the manufacturing cost of the heat exchange plate for dehumidification can be lowered | hung.

  Moreover, since the heat exchange plate for dehumidification has irregularities on the surface, the amount of cooling water that can be retained is large. Therefore, the air containing the moisture evaporated from the laundry can be cooled with a large amount of cooling water.

  In the washing / drying machine of one embodiment, the unevenness has a staircase shape.

  According to the washing and drying machine of the above embodiment, since the unevenness of the dehumidifying heat exchange plate has a stepped shape, cooling water can flow slowly along the surface of the dehumidifying heat exchange plate. That is, the speed at which the cooling water flows can be reduced. Accordingly, since the contact time between the air containing moisture evaporated from the laundry and the cooling water becomes long, the air is sufficiently cooled by the cooling water, and the dehumidification efficiency of the air can be further increased.

  Moreover, since the dehumidification efficiency of the air containing the water evaporated from the laundry can be increased, the amount of the cooling water supplied to the dehumidification heat exchange plate can be reduced. Therefore, the usage-amount of the said cooling water can be reduced more. That is, more water can be saved.

  The washing / drying machine of the present invention cools the air containing moisture evaporated from the laundry by both the dehumidifying heat exchange plate and the cooling water by supplying cooling water, for example, to the dehumidifying heat exchange plate during the drying operation. Therefore, the air can be sufficiently dehumidified.

  Further, even when foreign matter such as lint is accumulated on the heat exchange plate for dehumidification during the drying operation, the heat exchange plate for dehumidification has an open cross-sectional shape, so that the foreign matter can be easily flushed with cooling water and removed. . Therefore, the contact area between the air containing moisture evaporated from the laundry and the heat exchange plate for dehumidification is not reduced by foreign matter, so that the efficiency of heat exchange between the air and the heat exchange plate for dehumidification is improved. Dehumidification efficiency can be increased.

  Hereinafter, the washing and drying machine of the present invention will be described in detail with reference to the illustrated embodiments.

  In FIG. 1, the schematic which looked at the drum type washing-drying machine of one Embodiment of this invention from diagonally upward is shown.

  The drum type washing and drying machine includes an outer box 1 having an outer box opening 25 at the front. The upper part of the outer box 1 consists of a top plate 24, while the lower part of the outer box 1 consists of a base 2. The outer box opening 25 is opened and closed by an open / close door 3 attached to the outer box 1 by a hinge (not shown). A detergent case 11 for storing detergent, bleach and softener is provided at the top of the outer box 1, and an operation panel 8 having operation keys and a display unit is provided.

  FIG. 2 is a schematic cross-sectional view of the drum type washing and drying machine.

  A water supply port 10 is provided at the rear portion of the top plate 24 that is the upper portion of the outer box 1. The water supplied to the water supply port 10 sequentially flows through the water supply pipe 9, the detergent case 11 and the water supply duct 35 and flows into the water tank 4. The water supply pipe 9 is provided with a water supply valve 36. A control device 23 for controlling the operation of the drum type washing and drying machine is disposed on the back side of the operation panel 8 at the upper front of the outer box 1 (inside the outer box 1).

  The drum type washing and drying machine also includes a water tank 4, a drum 5, a driving device 6, and a drying system 26. The driving device 6 is attached to the rear portion of the water tank 4 and rotationally drives the drum 5. The drying system 26 is for drying the laundry in the drum 5. The drum 5 is an example of a rotating tank.

  The water tank 4 has a bottomed cylindrical shape and is disposed in the outer box 1. Further, a water tank opening 27 is provided on the front surface of the water tank 4. A packing 7 made of an elastic material such as rubber or soft resin is fixed to the opening edge of the water tank opening 27. Accordingly, when the opening / closing door 3 is closed, the window 31 of the opening / closing door 3 is in close contact with the packing 7, and the liquid in the water tank 4 can be prevented from leaking out of the water tank 4. The water tank 4 is arranged such that the water tank opening 27 faces the front and faces the outer box opening 25. More specifically, the central axis of the water tank 4 is inclined so as to form an angle of 5 ° to 30 ° with respect to the horizontal direction. A water supply duct 35 is connected to the upper part of the water tank 4 for supplying water, washing liquid, or the like into the water tank 4. On the other hand, a drain outlet 51 is provided in the lower part of the water tank 4, and the drain duct 12 is connected to the drain outlet 51. The liquid flowing through the drainage duct 12 can flow into the drainage hose 50 or the circulation hose 29 after passing through the lint filter 28. The lint filter 28 removes foreign matters such as lint in the liquid flowing in the drain duct 12. The drainage hose 50 is provided with a drainage valve 30 that is opened and closed by the drainage motor 14.

  The upper end of the circulation hose 29 is connected to a circulation nozzle 19 provided at the lower front of the water tank 4. On the other hand, the lower end of the circulation hose 29 is connected to the circulation pump 13 disposed behind the lint filter 28. By operating the circulation pump 13, the liquid in the water tank 4 can be circulated through the lint filter 28. That is, when the circulation pump 13 is operated, foreign matter such as lint is removed from the liquid in the water tank 4, and the liquid from which the foreign matter has been removed can be returned to the water tank 4 again.

  The drum 5 also has a bottomed cylindrical shape like the water tank 4. The drum 5 is rotatably disposed on the upper side of the space in the water tank 4. Therefore, in the vertical plane including the rotation axis of the drum 5, the distance between the lower part of the drum 5 and the lower part of the water tank 4 is larger than the distance between the upper part of the drum 5 and the upper part of the water tank 4. Is getting longer. The rotating shaft of the drum 5 is inclined so as to form an angle of 5 ° to 30 ° with respect to the horizontal direction and is substantially parallel to the central axis of the water tank 4. In addition, a drum opening 32 for putting laundry into the drum 5 is provided on the front surface of the drum 5. The drum opening 32 has a larger diameter than the water tank opening 27 and faces the outer box opening 25 and the water tank opening 27. A plurality of small holes 33 are provided in the entire peripheral wall of the drum 5. This small hole 33 is for circulating wash water, dry air, etc. between the space between the water tank 4 and the drum 5 and the space in the drum 5. Further, a fluid balancer 34 is provided to surround the drum opening 32 of the drum 5 from the outside, and an imbalance that is likely to occur due to the bias of the laundry, the washing liquid, etc. when the drum 5 rotates is caused inside the fluid balancer 34. The movement is canceled by the movement of the sealed liquid.

  The drying system 26 includes a fan unit 15 and a heat exchange plate 17 for dehumidification. Moreover, although mentioned later in detail, the said drying system 26 also has the warm air unit 16 (refer FIG. 5) as an example of a heater unit.

  The fan unit 15 is attached to the lower part of the rear surface of the water tank 4. The fan unit 15 includes a fan case 37, a blower fan 38 accommodated in the fan case 37, and a fan motor 39 that rotationally drives the blower fan 38. The fan motor 39 is directly connected to the blower fan 38 and rotationally drives the blower fan 38 by a direct drive structure.

  The dehumidifying heat exchange plate 17 is disposed in a region between the lower part of the water tank 4 and the lower part of the drum 5 so as to be immersed in the liquid in the water tank 4 at the time of washing or rinsing, and is 5 ° to the horizontal plane. It is inclined to form an angle of ˜30 °. Further, the rear portion (portion on the fan unit 15 side) of the dehumidifying heat exchange plate 17 is covered with a plate cover 18 attached to the inner wall of the water tank 4. The plate cover 18 guides the air containing moisture evaporated from the laundry along the heat exchange plate 17 for dehumidification into the fan case 37. The plate cover 18 is an example of a suction guide.

  FIG. 3A shows a schematic top view of the dehumidifying heat exchange plate 17, FIG. 3B shows a schematic front view of the dehumidifying heat exchange plate 17, and FIG. 3C shows the dehumidifying heat exchange plate 17. The schematic side view of is shown.

  The dehumidifying heat exchange plate 17 is made of metal and has an open cross-sectional shape. Further, nine ellipsoidal concave portions 17a are provided on the surface of the dehumidifying heat exchange plate 17. Further, in order to fix the dehumidifying heat exchange plate 17 to the water tank 4, a stainless steel wire 40 is attached to the edge of the dehumidifying heat exchange plate 17. Both end portions 40a and 40b of the wire 40 are formed on a substantially vertical portion extending in a direction substantially perpendicular to the back surface of the dehumidifying heat exchange plate 17 (a direction in which the concave portion 17a protrudes) and on the back surface of the dehumidifying heat exchange plate 17. It consists of a substantially parallel portion extending in a substantially parallel direction. The other part of the wire 40 extends along the edge of the dehumidifying heat exchange plate 17, and the rear part 40 c has a gap with the heat exchange plate 17. Although not shown, a hole through which the rear portion 40 c can be inserted and removed is provided in the inner wall surface of the rear portion of the water tank 4.

  FIG. 4 shows an enlarged view of the main part of FIG.

  On the surface of the dehumidifying heat exchange plate 17, the cooling water supplied from the cooling nozzle 21 flows toward the fan unit 15 during the drying operation. More specifically, the cooling supplied from the cooling nozzle 21 to the foremost concave portion 17a is performed by the eight rear concave portions as indicated by the arrows because the dehumidifying heat exchange plate 17 is inclined with respect to the water surface. After sequentially flowing through 17a, it flows down from the rear end of the dehumidifying heat exchange plate 17 and is drained out of the outer box 1 through the drain port 51, the drain duct 12, and the like.

  The cooling nozzle 21 is provided at the lower front portion of the water tank 4. One end of the cooling hose 43 is connected to the end of the cooling nozzle 21 outside the water tank 4.

  FIG. 5 shows a schematic front view of the water tank 4.

  The hot air unit 16 includes a heater 41 and a blower case 42 that guides the air heated by the heater 41 into the drum 5.

  The heater 41 includes a heating unit that heats the air blown out by the fan unit 15 and a heater case that houses the heating unit. The heater 41 is installed between the lower part of the water tank 4 and the lower part of the drum 5 so as to be located on the side of the heat exchange plate 17 for dehumidification. The space in the heater case communicates with the space in the blower case 42.

  The blower case 42 has an upper end located between the lower edge of the water tank opening 27 and the lower edge of the drum opening 32. Thereby, the air guided by the blower case 42 blows out from the upper end of the blower case 42 into the drum 5.

  The arrangement space at the upper end of the blower case 42 is obtained by positioning the center C1 of the water tank opening 27 closer to the top plate 24 than the center C2 of the drum opening 32. That is, the arrangement space at the upper end of the blower case 42 is obtained by decentering the water tank opening 27 toward the top plate 24 of the outer box 1 with respect to the drum opening 32.

  The operation | movement at the time of the drying operation of the drum type washing-drying machine of the said structure is demonstrated using FIG.

  When the drying operation starts, the drying system 26 operates, and the warm air from the heater 41 blows into the drum 5 as indicated by an arrow A. Thereby, the said warm air hits the laundry in the drum 5, and the water | moisture content of a laundry evaporates. As shown by an arrow B, the moisture-containing air goes out of the drum 5 through the small holes 33, is sucked into the fan unit 15, and enters the plate cover 18. The plate cover 18 causes the moisture-containing air to flow along the dehumidifying heat exchange plate 17 as indicated by an arrow C. At this time, the moisture-containing air is cooled by the cooling water flowing on the surface of the dehumidifying heat exchange plate 17 and is also cooled by the dehumidifying heat exchange plate 17 cooled by the cooling water. Thereby, the water | moisture content of the said air can be condensed effectively. That is, the air is sufficiently dehumidified to obtain good dry air. The dry air is sucked into the fan case 37 as indicated by an arrow D, while the condensed water enters the drain duct 12 through the drain port 51 and goes out of the outer box 1. The dry air sucked into the fan case 37 is sent to the heater 41 by the rotation of the blower fan 38, heated by the heater 41, and returned to the drum 5.

  As described above, by circulating the air in the water tank 4, the laundry can be dried without discharging the moisture-containing air to the outside of the outer box 1. At this time, even if foreign matter such as lint adheres to the heat removal plate 17 for dehumidification, since the heat exchange plate 17 for dehumidification has an open cross-sectional shape, the foreign matter can be easily removed by flowing with cooling water. Therefore, the contact area between the air containing moisture evaporated from the laundry and the dehumidifying heat exchange plate 17 is not reduced by foreign matter. That is, the contact area between the air containing moisture evaporated from the laundry and the heat exchange plate for dehumidification can be kept large. As a result, the efficiency of heat exchange between the air and the heat exchange plate 17 for dehumidification is improved, and the dehumidification efficiency of the air can be increased.

  Moreover, since the dehumidification efficiency of the air containing the water evaporated from the laundry can be increased, the amount of cooling water supplied to the dehumidification heat exchange plate 17 can be reduced. Therefore, the usage-amount of the said cooling water can be reduced. That is, water can be saved.

  Further, since the dehumidifying heat exchange plate 17 is disposed between the drum 5 and the water tank 4, the distance between the laundry and the dehumidifying heat exchange plate 17 is shortened, and the dehumidifying heat exchange plate 17 is removed from the laundry. The pressure loss of the air going to becomes smaller. Therefore, noise due to the air can be reduced.

  Further, since the distance between the laundry and the heat exchange plate 17 for dehumidification is shorter than that of the conventional drum type washing and drying machine, the air containing the moisture of the laundry even if the output of the fan unit 15 is small. Can be sent to the heat exchange plate 17 for dehumidification by the fan unit 15. Therefore, the fan unit 15 can be reduced in size.

  Further, since the dehumidifying heat exchange plate 17 is disposed between the lower portion of the drum 5 and the lower portion of the water tank 4, it is not necessary to ensure water tightness between the water tank 4 and the dehumidifying heat exchange plate 17. Good. That is, parts such as packing necessary for attaching the external dehumidifier of the conventional drum type washing / drying machine to the water tank become unnecessary. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced as compared with the conventional drum type washing and drying machine.

  The dehumidifying heat exchange plate 17 is disposed in a region between the lower part of the water tank 4 and the lower part of the drum 5 so as to be immersed in the liquid in the water tank 4 during washing or rinsing. When rinsing, foreign matters such as lint attached to the heat exchange plate 17 for dehumidification can be reliably washed away with the liquid in the water tank 4.

  Further, by arranging the dehumidifying heat exchange plate 17 between the lower part of the drum 5 and the lower part of the water tank 4, the empty space below the area in the water tank 4 can be used effectively. Therefore, the drum type washing and drying machine can be miniaturized.

  Further, since the dehumidifying heat exchange plate 17 is arranged so as to be inclined with respect to the horizontal plane, the cooling water from the cooling nozzle 21 slowly flows on the dehumidifying heat exchange plate 17. As a result, it takes a long time for the air containing moisture evaporated from the laundry to contact the cooling water, and the air can be sufficiently cooled.

  Further, since air containing moisture evaporated from the laundry is guided by the plate cover 18 so as to flow along the heat exchange plate 17 for dehumidification, the air containing moisture from the laundry is efficiently supplied to the heat exchange plate 17 for dehumidification. Can be contacted. That is, the heat exchange performance of the dehumidifying heat exchange plate 17 is improved.

  Further, since the air containing moisture evaporated from the laundry is guided by the plate cover 18 so as to flow along the heat exchange plate 17 for dehumidification, the occurrence of turbulent flow due to the air can be prevented. Therefore, the pressure loss of the air flowing along the dehumidifying heat exchange plate 17 is reduced, and the air flow rate can be prevented from decreasing.

  Moreover, since it is possible to prevent a decrease in the air volume of the air flowing along the dehumidifying heat exchange plate 17, foreign matters such as lint attached to the dehumidifying heat exchange plate can be blown off.

  Further, since the plate cover 18 covers the rear part of the dehumidifying heat exchange plate 17, as shown by the arrow E in FIG. The air can be prevented from being directly hit, and the air can be guided to the front portion of the heat exchange plate 17 for dehumidification. That is, the air flow can be controlled.

  Further, as shown by an arrow E in FIG. 6, foreign matter such as yarn waste can be separated from the air by the air containing moisture evaporated from the laundry hitting the plate cover 18. Therefore, the foreign matter can be prevented from entering the fan unit 15 together with air.

  Moreover, since the heat exchange plate 17 for dehumidification is fixed to the water tank 4 by the said wire 40, the heat exchange plate 17 for dehumidification can be easily fixed also to the complicated location of the water tank 4. FIG.

  Moreover, since the hole which can insert / remove the rear part 40c of the said wire 40 is provided in the inner wall surface of the rear part of the water tank 4, the heat exchanger plate 17 for dehumidification to the water tank 4 can be fixed more easily.

  Further, since the dehumidifying heat exchange plate 17 is made of metal, the dehumidifying heat exchange plate 17 can be easily and sufficiently cooled with cooling water. Therefore, the heat exchange performance of the dehumidifying heat exchange plate 17 can be further improved.

  Further, since the dehumidifying heat exchange plate 17 is made of metal, the dehumidifying heat exchange plate 17 is highly workable, and the recess 17a can be easily provided in the dehumidifying heat exchange plate 17 by pressing. Therefore, the manufacturing cost of the dehumidifying heat exchange plate 17 can be reduced.

  Further, since the heat exchange plate 17 for dehumidification has the concave portion 17a, the amount of cooling water that can be retained is large. Therefore, the air containing the moisture evaporated from the laundry can be cooled with a large amount of cooling water.

  In the above embodiment, the water supply valve 36 is provided in the water supply pipe 9, but a water supply pump may be provided in the water supply pipe 9 instead of the water supply valve 36.

  Moreover, in the said embodiment, although the plate cover 18 attached to the inner wall of the water tank 4 was used, the plate cover 104a which consists of a part of water tank 104 may be used as shown in FIG. When this plate cover 104a is used, the number of parts of the drum type selective dryer can be reduced.

  In the above embodiment, nothing is provided between the heater 41 and the plate cover 18, but a rib 22 may be provided between the heater 41 and the plate cover 18 as shown in FIG. 8. Good. When the rib 22 is provided, the radiant heat from the heater 41 can be shielded by the rib 22. Therefore, it is possible to prevent the heat removal plate 17 for dehumidification from being heated by the radiant heat generated by the heater 41 and prevent the heat exchange performance of the heat exchange plate 17 for dehumidification from deteriorating.

  Moreover, in the said embodiment, although the dehumidification heat exchange plate 17 by which the unevenness | corrugation was provided in the upper surface was used, you may use the heat exchange plate for dehumidification with a flat upper surface. That is, the heat exchange plate for dehumidification used in the washing / drying machine of the present invention is not limited to the shape of the above embodiment, and there are various shapes.

  FIG. 9A shows a schematic top view of a dehumidification heat exchange plate 117 which is a modification of the dehumidification heat exchange plate 17. FIG. 9B shows a schematic front view of the dehumidifying heat exchange plate 117, and FIG. 9C shows a schematic side view of the dehumidifying heat exchange plate 117. The wire rod 40 for fixing the dehumidifying heat exchange plate 117 to the water tank 4 is the same as that in the above embodiment, and the description thereof is omitted.

  The dehumidifying heat exchange plate 117 is made of metal and has an open cross-sectional shape, like the dehumidifying heat exchange plate 17. The dehumidifying heat exchange plate 17 has a single recess 117a on the top surface. That is, the self-chamber heat exchange plate 117 has a tray shape capable of storing the cooling water from the cooling nozzle 21. Such a dehumidifying heat exchange plate 117 can hold more cooling water than the dehumidifying heat exchange plate 17.

  FIG. 10A shows a schematic top view of a dehumidifying heat exchange plate 217, which is another modification of the dehumidifying heat exchange plate 17, and FIG. 10B shows a schematic front view of the dehumidifying heat exchange plate 217. FIG. 10C shows a schematic side view of the dehumidifying heat exchange plate 217. The wire rod 40 for fixing the dehumidifying heat exchange plate 217 to the water tank 4 is the same as that in the above embodiment, and the description thereof is omitted.

  The dehumidifying heat exchange plate 217 is made of metal and has an open cross-sectional shape. Further, a step-shaped unevenness 217 a is provided on the surface of the dehumidifying heat exchange plate 217.

  When such a dehumidifying heat exchange plate 217 is used, during the drying operation, as shown in FIG. 11, the cooling water from the cooling nozzle 21 flows on the surface of the dehumidifying heat exchange plate 217 as indicated by an arrow. At this time, the presence of the stepped irregularities 217a on the surface of the dehumidifying heat exchange plate 217 makes it possible to reduce the speed of the flow of the cooling water. Therefore, since the air containing the moisture evaporated from the laundry in the drum 5 is in contact with the cooling water for a long time, the air is sufficiently cooled with the cooling water, and the dehumidifying efficiency of the air can be further increased.

  Moreover, since the air containing the water evaporated from the laundry can be sufficiently cooled with the cooling water, the amount of the cooling water supplied to the dehumidifying heat exchange plate 217 can be reduced. Therefore, the usage-amount of the said cooling water can be reduced more. That is, more water can be saved.

  The dehumidifying heat exchange plate 17 can provide the same effects as the dehumidifying heat exchange plate 217.

  The dehumidifying heat exchange plates 17, 117, 217 can be cooled with tap water as an example of cooling water. In this case, you may provide the water supply valve apparatus 44 shown in FIG.

  The water supply valve device 44 includes a washing / rinsing water supply valve 45 communicating with the inlet 44c and the first outlet 44a, and a drying water supply valve 46 communicating with the inlet 44c and the second outlet 44b. have.

  One end of the water supply pipe 109 is connected to the first discharge port 44a, while the other end of the cooling hose 43 is connected to the second discharge port 44b. The inflow port 44c is connected to a water tap through, for example, a flexible hose (not shown). The other end of the water supply pipe 109 is connected to the detergent case 11.

  According to the water supply valve device 44 configured as described above, when the water supply valve 45 for washing and rinsing is opened, tap water discharged from the first discharge port 44a flows through the water supply pipe 109 and flows into the detergent case 11. On the other hand, when the drying water supply valve 46 is opened, the tap water discharged from the second discharge port 44 b flows through the cooling hose 43 and flows down from the cooling nozzle 21 to the surfaces of the dehumidifying heat exchange plates 17, 117 and 217.

  Further, the heat exchange plate for dehumidification of the washing / drying machine of the present invention may be disposed so as to be inclined with respect to the horizontal plane, or may be disposed in parallel to the horizontal plane, or may be disposed on the horizontal plane. Alternatively, they may be arranged substantially vertically.

  The dehumidifying heat exchange plate may be disposed between the upper part of the water tank and the upper part of the drum, or may be disposed between the side part of the water tank and the side part of the drum. That is, the dehumidifying plate may be disposed anywhere between the water tank and the drum.

  The dehumidifying heat exchange plate can be mounted not only in a drum type laundry dryer but also in a vertical laundry dryer.

FIG. 1 is a schematic perspective view of a drum type washing / drying machine according to an embodiment of the present invention. FIG. 2 is a schematic sectional view of the drum type washing and drying machine. FIG. 3A is a schematic top view of the heat exchange plate for dehumidification of the drum type washing and drying machine. FIG. 3B is a schematic front view of the heat removal plate for dehumidification. FIG. 3C is a schematic side view of the heat exchange plate for dehumidification. FIG. 4 is an enlarged view of a main part of FIG. FIG. 5 is a schematic front view of a water tank of the drum type washing and drying machine. FIG. 6 is a schematic cross-sectional view for explaining the operation during the drying operation of the drum type washing and drying machine. FIG. 7 is a schematic front view of a modified example of the water tank. FIG. 8 is a schematic front view of another modified example of the water tank. FIG. 9A is a schematic top view of a modification of the dehumidifying heat exchange plate. FIG. 9B is a schematic front view of a modified example of the dehumidifying heat exchange plate. FIG. 9C is a schematic side view of a modified example of the dehumidifying heat exchange plate. FIG. 10A is a schematic top view of another modification of the dehumidifying heat exchange plate. FIG. 10B is a schematic front view of another modified example of the dehumidifying heat exchange plate. FIG. 10C is a schematic side view of another modification of the dehumidifying heat exchange plate. FIG. 11 is a schematic cross-sectional view of the main part of a drum-type washing and drying machine provided with another modification of the heat exchange plate for dehumidification. FIG. 12 is a schematic cross-sectional view of the main part of a drum-type washing / drying machine according to another embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer box 4,104 Water tank 5 Drum 16 Hot air unit 17,117,217 Heat exchange plate 17a, 117a for dehumidification Recess 18 Plate cover 22 Rib 26 Drying system 40 Wire material 104a Plate cover 217a Unevenness

Claims (9)

An outer box,
A water tank disposed in the outer box;
A rotating tub disposed in the water tub so as to be freely rotatable;
A drying system for drying the laundry in the rotating tub,
The said drying system has a heat exchange plate for dehumidification of the open cross-sectional shape arrange | positioned between the said water tank and the said rotation tank, The washing dryer characterized by the above-mentioned. The washing / drying machine according to claim 1, wherein the heat exchange plate for dehumidification according to claim 1 is disposed in a lower portion of a region in the water tank. In the washing and drying machine according to claim 1,
The washing / drying machine, wherein the dehumidifying heat exchange plate is arranged parallel to or inclined with respect to a horizontal plane. In the washing and drying machine according to claim 1,
A washing / drying machine comprising a suction guide for guiding the air so that the air containing water evaporated from the laundry flows along the heat exchange plate for dehumidification. In the washing and drying machine according to claim 4,
The washing / drying machine, wherein the suction guide is formed integrally with the water tank. In the washing and drying machine according to claim 1,
The drying system has a heater unit that heats air dehumidified by the heat exchange plate for dehumidification,
A washing / drying machine, wherein a rib is provided between the heater unit and the heat exchange plate for dehumidification. In the washing and drying machine according to claim 1,
The washing / drying machine, wherein the dehumidifying heat exchange plate is fixed to the water tank by a wire made of stainless steel. In the washing and drying machine according to claim 1,
The dehumidifying heat exchange plate is made of metal and has irregularities on the surface thereof. The washing / drying machine according to claim 8,
The washing / drying machine, wherein the unevenness has a stepped shape.

Images