JP2010187839A - Washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve dehumidifying efficiency of a water-cooled heat exchanger and also improve the strength by enhancing the rigidity of a circulating air duct. <P>SOLUTION: The circulating air duct 20 for drying, to be disposed outside a water tank 8 has one end connected to an air outlet 10 on the front-section upper face of the water tank 8 and the other end communicating with an air inlet 11 on the back-face upper section of the water tank 8. The water-cooled heat exchanger 43 is disposed at a rising section 42, which extends upward along the back face 8b of the water tank 8, out of the circulating air duct 20. A falling section 40 and the rising section 42 of the circulating air duct 20, whose lower sections are linked at a folding section 41 and upper sections are linked on the upper face 8a of the water tank 8 via a fan casing 45 and a mounting seat 29, can improve the rigidity of the falling section 40 and the rising section 42 so as to improve the pipe strength. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drum-type washing and drying machine provided with a water-cooled heat exchanger in a circulation air passage.

  In the drum type washing and drying machine, a circulation air passage for drying is provided outside the water tank (outer tank) that accommodates the drum, and the air in the water tank is blown out from the front to the circulation air path side. A configuration in which air is blown into the water tank from the rear of the water tank is disclosed (for example, see Patent Document 1). A blower, a dehumidifier (heat absorber), and a heater for heating are provided in the circulation air passage. Among these, the blower and the dehumidifier are arranged at the upper part of the water tank, and the heater is arranged at the upper part of the rear part of the water tank.

  In the above configuration, as the blower is driven, the air in the water tank, and consequently the drum, is circulated through the circulation air passage by the air blowing action. At this time, hot air for drying heated by the heater is supplied from the rear part of the water tub into the water tub and eventually into the drum, and the laundry housed in the drum is heated by the hot air. Then, the air deprived of moisture from the laundry is blown out from the front of the water tank to the circulation air passage side, and the air containing the moisture is cooled in the dehumidifier, whereby the moisture is removed. The air from which the moisture has been removed is heated again by the heater and supplied into the drum. By repeating this, the laundry in the drum is dried.

JP-A-8-243290 (see FIG. 6)

  In the thing of above-mentioned patent document 1, the dehumidifier is arrange | positioned in the substantially horizontal state so that the upper surface of a water tank may be followed. As this dehumidifier, in particular, when a water-cooled heat exchanger that cools the air passing through the air passage with water is used, the cooling efficiency with respect to the passing air is poor, and the length of the air passage for dehumidification is increased. There are drawbacks that it is difficult to ensure and the dehumidification efficiency is poor.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to improve the dehumidification efficiency of the water-cooled heat exchanger, and to increase the rigidity of the circulating air passage to improve the strength. It is to provide a washing and drying machine that can.

  In order to achieve the above-described object, a washing and drying machine of the present invention includes an outer box, a water tank disposed in the outer box, having an outlet at the top of the front and having an inlet at the rear. A rotating drum that has a hole that allows water flow and ventilation, and that is rotatably disposed in the water tank in a state where the axial direction is a horizontal axis in the front-rear direction, and that stores laundry and is rotated by driving means; A circulation air passage disposed in the outer box and between the outer box and one end connected to the outlet and the other end connected to the inlet; The air in the water tank is blown out from the outlet to the circulating air passage side, and the air in the circulating air passage is blown into the water tank from the air inlet. A blowing means for circulating through the circulation air passage, and provided in the circulation air passage; A water-cooled heat exchanger that removes moisture contained in the air flowing through the circulation air passage, and the circulation air passage extends rearward from the outlet along the upper surface of the water tank. Near the rear of the aquarium, it turns downward and extends downward along the back of the aquarium, and turns upward from the lower folded portion and extends upward along the back of the aquarium. After being returned to the pipe, the pipe is connected to the intake port, and the heat exchanger is disposed in a rising portion extending upward from the folded portion in the circulation air passage, and the upper surface of the water tank in the circulation air passage. The rising part including the heat exchanger and the falling part from the part along the folded part to the folded part is connected at the lower part by the folded part and at the upper part through the connecting part on the upper surface of the water tank. Connected And wherein the are.

  In the above-described configuration, the air in the rotating drum and thus the air in the water tank are blown out from the outlet to the circulation air passage side by the blowing action of the blowing means. After the air flows backward on the upper surface of the aquarium, the air turns downward near the rear of the aquarium, and flows downward at the falling part arranged along the rear surface of the aquarium. From the intake port to the upper surface of the water tank, and after returning to the upper surface of the water tank, the air flows from the intake port into the water tank and then into the rotating drum. At this time, the air flowing in the circulation air passage is cooled when passing through the water-cooled heat exchanger disposed in the rising portion, so that moisture contained in the air is removed.

  In the present invention, since the water-cooled heat exchanger is arranged at the rising portion arranged along the back surface of the water tank in the circulation air passage, the air flowing from the bottom to the top in the heat exchanger By spraying water from above, moisture can be efficiently removed from the air flowing through the rising portion (in the heat exchanger). And since a heat exchanger can be provided so that it may extend in the up-down direction along the back surface of a water tank, the length of the air path for dehumidification can be ensured long, and dehumidification efficiency can be improved generally.

  In addition, the falling part and rising part of the circulating air passage are arranged so as to extend in the vertical direction along the back surface of the aquarium, but the lower part of the falling part and the rising part are folded back. Since the upper part is connected via the connecting part on the upper surface of the water tank, the rigidity of the falling part and the rising part can be increased, the pipe strength can be improved, and the circulation wind The strength of the road can be improved. In addition, the circulation air passage has a configuration in which the upper portion is along the upper surface of the aquarium and the rear portion is along the rear surface of the aquarium, so that it is possible to make the air passage compact while increasing the length of the air passage. .

The perspective view from the right rear of the water tank and the circulation airway part which showed one Embodiment of this invention and showed the state which removed the outer case Perspective view from the front of the entire washing and drying machine shown with the door open Exploded perspective view of the upper air passage part in the circulation air passage Top view of the upper airway part Vertical side view along line X1-X1 in FIG. Bottom view of the upper duct in the upper air passage as seen from below The lint filter unit is shown, (a) is a perspective view with the lid closed, and (b) is a perspective view with the lid open. (A) is a front view of a lint filter unit, (b) is a longitudinal side view along line X2-X2 in (a). Fig. 1 is a diagram corresponding to Fig. 1 showing an application example, in which a part of the circulation air passage is applied to a device provided with a heat pump device.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. First, in FIG. 2 which shows the external appearance of the drum type washing / drying machine, the outer box 1 of the drum type washing / drying machine has a substantially rectangular box shape, and a base plate 2 is provided at the bottom. The front portion 1a of the outer box 1 has a downwardly inclined shape, and a laundry doorway 3 including a circular opening is formed at a substantially central portion thereof. The front part 1a is provided with a door 4 so as to be pivotable in the lateral direction via a hinge 5, and the laundry entrance 3 is opened and closed by the door 4. On the front face 1a, an operation panel 6 is provided above the laundry entrance 3 and a drawer-type detergent charging case 7 is provided at the upper left.

  As shown in FIG. 1, a substantially cylindrical water tank 8 whose rear surface is closed is disposed in the outer box 1. The water tank 8 is elastically supported on the base plate 2 via an elastic support mechanism 9 in a state where the axial direction is a horizontal axis in the front-rear direction and is inclined slightly downward. The opening on the front surface of the water tub 8 communicates with the laundry entrance 3. Although not shown in detail, the water tank 8 has a blowing port 10 on the front upper surface 8a and a blowing port 11 on the upper portion of the rear back surface 8b.

  A rotating drum 14 (see FIG. 2) is rotatably disposed in the water tank 8. Although not shown in detail, the rotating drum 14 has a cylindrical shape with a closed rear surface, similar to the water tank 8, and its axial direction is a horizontal axis in the front-rear direction and is slightly inclined to the rear downward direction. In the water tank 8. A number of holes 15 through which water and air can be passed are formed in the peripheral wall portion of the rotating drum 14. A plurality of baffles 16 (only one is shown in FIG. 2) are provided inside the peripheral wall portion of the rotating drum 14. A front opening of the rotating drum 14 is also communicated with the laundry entrance 3, and the rotating drum 14 accommodates a laundry (not shown) put in from the laundry entrance 3. The rotating drum 14 is driven to rotate by a motor 17 provided on the back surface 8b of the water tank 8 as a driving means. The rotating drum 14 having such a configuration functions as a washing tub during washing, as a dehydrating tub during dehydration, and as a drying tub during drying.

  A circulation air passage 20 for drying is disposed outside the water tank 8. The circulation air passage 20 is covered with the outer box 1. Hereinafter, the circulation air passage 20 will be described. The circulating air passage 20 has an upper air passage 21 having one end connected to the outlet 10 of the water tank 8. As shown in FIGS. 3 to 5, the upper air passage 21 has an upper duct 22 and a lower duct 23 assembled to the upper duct 22. Among these, the upper duct 22 integrally includes a rectangular cylindrical filter housing portion 25 that is open on both upper and lower surfaces, and a rear extension 26 that extends rearward from the filter housing portion 25. The lower surface of the rear extension 26 is also open. A flexible duct 28 having a bellows-like flexible portion 27 is connected to the front portion of the filter housing portion 25. One end portion 28 a of the flexible duct 28 is connected to the outlet 10. On the outer surface of the rear extension 26, in this case, the upper surface, mounting seats 29 constituting the connecting portion are integrally provided at two locations.

  As shown in FIGS. 5 and 6, concave mounting grooves 31 extending in the vertical direction are formed by two ribs 30 extending in the vertical direction on both the left and right sides of the inner surface of the rear extension 26. The mounting groove 31 is located in the vicinity of the mounting seat 29 on the front side (filter housing portion 25 side) of the two mounting seats 29. A lint filter unit 32, which will be described later, is accommodated in the filter accommodating portion 25 so that it can be taken in and out from above.

  The lower duct 23 is assembled to the lower surface of the upper duct 22 so as to cover the lower surface opening of the filter housing portion 25 and the lower surface opening of the rear extension 26 in the upper duct 22. On both the left and right sides of the inner surface of the lower duct 23, concave mounting grooves 36 (FIGS. 3 and 5) that are positioned in portions corresponding to the mounting grooves 31 and that extend in the vertical direction by two ribs 35 that extend in the vertical direction. Reference) is formed. A fixed lint filter 37 is disposed between the upper duct 22 and the lower duct 23.

  The fixed lint filter 37 has a frame portion 38 for holding a reticulated net-like lint filter. The mounting groove 31 and the lower duct of the upper duct 22 are formed with the left and right sides of the frame portion 38 as convex portions. It is attached between the upper duct 22 and the lower duct 23 by being fitted in the mounting groove 36 of 23. Therefore, the fixed lint filter 37 is attached between the upper duct 22 and the lower duct 23 by concave and convex fitting. A downward connection port 39 is provided on the lower surface on the rear side of the lower duct 23.

  The upper air passage 21 configured as described above is positioned at the upper right portion of the water tank 8 along the upper surface 8a of the water tank 8 with one end portion 28a of the flexible duct 28 connected to the outlet 10. Are arranged so as to extend rearward. In this arrangement state, as shown in FIG. 5, the inner bottom surface 23a of the lower duct 23 is inclined downward toward the rear (the connection port 39 side). Although not shown, the upper air passage 21 is supported by the right side plate of the outer box 1 at the right side when viewed from the front.

  The connecting port 39 is connected to a falling portion 40 having a cylindrical shape extending in the vertical direction. The falling part 40 extends downward along the back surface 8 b of the water tank 8 at the rear part of the water tank 8. The lower end portion 40 a of the falling portion 40 is connected to the lower end portion of the rising portion 42 that extends upward via the folded portion 41. The rising portion 42 has a water-cooled heat exchanger 43. The ventilation portion of the rising portion 42 has a cylindrical shape extending in the vertical direction, and extends upward along the back surface 8 b of the water tank 8 at the rear portion of the water tank 8.

  A water spout 43a is provided below the intermediate portion in the vertical direction of the heat exchanger 43, and one end of a watering hose 43b is connected to the water spout 43a. The other end of the hose 43b is connected to a water supply valve (not shown), and water is supplied from the water supply valve into the water spout 43a and eventually into the heat exchanger 43 through the hose 43b. In the heat exchanger 43, a plurality of ribs 43c are alternately arranged in a so-called labyrinth structure so that the water rolled up in the heat exchanger 43 is not sucked up by the fan of the blower 44 described later. It is provided. A drain outlet 42 a is provided at the lower end of the rising portion 42. One end of a drain hose (not shown) is connected to the drain port 42a, and the other end of the hose is connected to a drain hose (not shown).

  On the upper surface 8 a of the water tank 8, a blower 44 that constitutes a blowing means is disposed, and an upper end portion of the rising portion 42 is connected to a suction port of a fan casing 45 of the blower 44. The blower 44 rotates a fan (not shown) disposed in the fan casing 45 by a fan motor 46. Here, the attachment portion 45a of the fan casing 45 is attached and fixed to the attachment seat 29 in the upper air passage 21 by, for example, screwing.

  One end of the heater case 47 is connected to the discharge port of the fan casing 45 on the upper surface 8 a of the water tank 8. In the heater case 47, although not shown, an electric heater constituting heating means is disposed. One end of a flexible duct 48 is connected to the other end of the heater case 47. The flexible duct 48 has a bellows-like flexible portion 48a. The flexible duct 48 is substantially L-shaped with the other end facing downward. The other end portion of the flexible duct 48 is connected to the upper end portion of the rear air passage 49 provided at the upper left portion of the back surface 8 b of the water tank 8. This rear air passage 49 communicates with the inlet 11 of the water tank 8.

  Here, the upper air passage 21 connected to the outlet 10 through the flexible duct 28, the falling portion 40, the turning portion 41, the rising portion 42 having the heat exchanger 43, and the fan of the blower 44. The circulation air passage 20 is constituted by the casing 45, the heater case 47, the flexible duct 48, and the rear air passage 49 communicating with the blowing port 11. The circulation air passage 20 has an upper air passage 21 connected to the outlet 10 extending rearward along the upper surface 8 a of the water tank 8, and a falling portion 40 in the vicinity of the rear portion of the water tank 8 on the back surface 8 b of the water tank 8. The rising portion 42 (the heat exchanger 43) extends upward along the back surface 8b of the aquarium 8 and returns upward to the upper surface 8a of the aquarium 8. A pipe is connected to the air inlet 11 through a fan casing 45, a heater case 47, a flexible duct 48, and a rear air passage 49.

  Next, the lint filter unit 32 will be described. 7 and 8, the lint filter unit 32 includes a filter case 52 having a lint filter 51, a lid 53 for opening and closing the front opening of the filter case 52, and an upper portion of the filter case 52. And a cover 54 provided in a fixed state. Among these, the filter case 52 is formed in a substantially box shape having an open front surface, and the lint filter 51 is disposed at portions corresponding to the bottom surface and the rear surface. The lint filter 51 has a mesh shape with air permeability and is substantially L-shaped. The lid 53 has a plurality of openings 56 that are partitioned by a plurality of ribs 55. The lid portion 53 is provided at its lower end portion so as to be rotatable in the vertical direction in the filter case 52 via the shaft portions 57 on both the left and right sides. The cover 54 has a rectangular plate shape larger than that of the filter case 52, and has a handle opening 58 substantially at the center. A closing plate 59 urged in the closing direction by the urging means is rotatably attached to the opening 58.

  An opening 60 (see FIG. 2) corresponding to the outer shape of the cover 54 is formed in the top plate portion 1 b of the outer box 1. Therefore, the lint filter unit 32 can be attached to the filter housing part 25 of the upper air passage 21 through the opening 60 so as to be able to be taken in and out from above the outer box 1.

Next, the operation of the above configuration will be described.
In the above configuration, when drying the laundry (not shown) accommodated in the rotary drum 14, the blower 44 is driven while the rotary drum 14 is rotated in both forward and reverse directions at a low speed by the motor 17. Then, the electric heater in the heater case 47 is caused to generate heat, and further, water is supplied from the water supply valve to the water outlet 43a of the heat exchanger 43 through the hose 43b to spray the heat into the heat exchanger 43.

  Among them, the air in the circulation air passage 20 is blown into the water tank 8 and then into the rotating drum 14 from the blowing port 11 by the blowing action of the fan of the blower 44, and the air in the rotating drum 14 and thus the water in the water tank 8 is turned into the water tank. The air in the water tank 8 (in the rotary drum 14) is circulated through the circulation air passage 20 by repeating the discharge from the air outlet 10 to the circulation air passage 20 (see arrow A in FIG. 1).

  The flow of the wind at this time will be described in a little more detail. The air in the circulation air passage 20 is heated by the electric heater in the heater case 47, and the heated air (warm air) passes through the flexible duct 48 and the rear air passage 49, and enters the water tank 8 from the inlet 11. As a result, it is supplied into the rotary drum 14. The hot air supplied into the rotating drum 14 heats the laundry in the rotating drum 14 and deprives the laundry of moisture. The warm air deprived of moisture exits from the front outlet 10 to the circulation air passage 20 and flows backward through the flexible duct 28 and the upper air passage 21. If the air flowing through the upper air passage 21 contains lint, most of the lint is captured by the lint filter 51, and the lint that has passed there is also captured by the fixed lint filter 37.

  The warm air that has flowed rearward in the upper air passage 21 flows downward in the falling portion 40, then turns upward at the folded portion 41 at the lower end portion, and the heat exchanger 43 in the rising portion 42. Flows upward in the interior. At this time, water is sprinkled from the water spout 43a into the heat exchanger 43, and the warm air is cooled and dehumidified by the water. In addition, the water sprayed in the heat exchanger 43 and the dehumidified water are discharged out of the machine from the drain port 42a through a hose.

  The air in the heat exchanger 43 rises while meandering by being obstructed by the plurality of ribs 43b, is sucked into the fan casing 45 of the blower 44, and is then discharged to the heater case 47 side, where the electric heater again Is heated by. The heated air flows through the flexible duct 48 and the rear air passage 49 so as to be returned from the blowing port 11 into the water tank 8 and then into the rotating drum 14. As the air is circulated in this way, the laundry in the rotating drum 14 is dried.

  On the other hand, when inspecting or cleaning the lint filter 51 in the lint filter unit 32, first, the user pushes the closing plate 59 of the cover 54 in the lint filter unit 32 with his / her finger from the outside of the outer box 1. The finger is inserted into the opening 58 and the finger is placed on the edge of the opening 58. Then, the user lifts the lint filter unit 32 together with the cover 54 and removes it from the filter housing portion 25 and the opening 60 of the outer box 1. Thereafter, the lid 53 of the lint filter unit 32 is opened, and the lint filter 51 is inspected and cleaned. After the inspection and cleaning are completed, the lid 53 is closed, and then the user pushes and rotates the closing plate 59 of the cover 54 with his / her finger, inserts the finger into the opening 58 and the edge of the opening 58 The lint filter unit 32 is held in the hand with the finger placed on the part. The lint filter unit 32 is inserted from the outside of the outer box 1 through the opening 60 of the outer box 1 through the opening 60 of the outer box 1 and into the filter housing 25 in the outer box 1. Is attached to the filter housing portion 25. At this time, the opening 60 of the outer box 1 is closed by the cover 54.

According to the above-described embodiment, the following operational effects can be obtained.
Since the water-cooled heat exchanger 43 is arranged in the rising portion 42 arranged along the back surface 8 b of the water tank 8 in the circulation air passage 20, the air flowing from the bottom to the top in the heat exchanger 43 On the other hand, moisture can be efficiently removed from the air flowing in the heat exchanger 43 by spraying water from above. And since the heat exchanger 43 can be provided so that it may extend in the up-down direction along the back surface 8b of the water tank 8, the length of the air path for dehumidification can be ensured long, and dehumidification efficiency can be improved generally. .

  Further, the falling portion 40 and the rising portion 42 of the circulation air passage 20 are arranged in a state of extending in the vertical direction along the back surface 8b of the water tank 8, but the rising portion 40 and the rising portion 42 are raised. Since the lower part of the part 42 is connected to the folded part 41 and the upper part is connected to the upper surface 8a of the water tank 8 via the fan casing 45 and the mounting seat 29, the rising part 40 and the falling part 40 rise. The rigidity of the portion 42 can be increased, the pipe strength can be improved, and as a result, the strength of the circulating air passage 20 can be improved. Moreover, since the upper part is along the upper surface 8a of the aquarium 8, and the rear part is along the back surface 8b of the aquarium 8, the circulation air path 20 is made compact while increasing the length of the air path. It becomes possible.

  Since the inner bottom surface 23 a of the lower duct 23 that constitutes the inner bottom surface of the upper air passage 21 of the circulation air passage 20 is inclined downward toward the rear, the air flowing through the upper air passage 21 is generated in the upper air passage 21. Even if condensation occurs, the condensed water flows rearward along the inner bottom surface 23a of the lower duct 23, and flows to the folded portion 41 side through the connection port 39 and the falling portion 40. For this reason, even if the dew condensation occurs in the upper air passage 21, the water can be prevented from entering the rotating drum 14, and the laundry in the rotating drum 14 can be prevented from getting wet with the dew condensation water.

  The upper air passage 21 has an upper duct 22 and a lower duct 23 assembled to the upper duct 22, and a fixed lint filter 37 for capturing lint is connected between the upper duct 22 and the lower duct 23 and for connection. It was set to the vicinity of the mounting seat 29, and it was set as the structure attached by uneven | corrugated fitting. Thereby, the strength of the upper air passage 21 near the mounting seat 29 can be improved, and the fixed lint filter 37 can be mounted and fixed without using screws or the like.

  Further, since the fixed lint filter 37 is disposed in the upper air passage 21 near the downstream side of the filter housing portion 25, the foreign matter is admitted into the filter housing portion 25 with the upper surface of the filter housing portion 25 opened. Even if dropped, the foreign matter is stopped by the fixed lint filter 37. For this reason, a foreign object can be easily taken out by inserting a hand from the upper surface opening of the filter housing portion 25, and the foreign material can be prevented from entering before the fixed lint filter 37. Even if water enters the filter housing portion 25 from the opening with the upper surface of the filter housing portion 25 open, the water flows backward along the inner bottom surface 23 a of the lower duct 23. Can do.

  Here, as a structure for fixing the fixed lint filter 37 between the upper duct 22 and the lower duct 23, in the above embodiment, two ribs 30 and 35 are provided on the inner surface side of the upper duct 22 and the lower duct 23, respectively. The concave mounting grooves 31 and 35 are formed, and the left and right side portions of the frame portion 38 of the fixed lint filter 37 are formed as convex portions to be fitted into the mounting grooves 31 and 35. It is good also as a structure. That is, one rib extending in the vertical direction is provided on each of the left and right inner surfaces of the upper duct 22 and the lower duct 23, and a concave attachment is provided by two ribs on the left and right sides of the frame portion 38 of the fixed lint filter 37. A groove is provided so that the concave mounting groove of the fixed lint filter 37 is fitted to one rib of the upper duct 22 and the lower duct 23. Also by this, the same effect as the above can be obtained.

  The lint filter unit 32 is attached to the filter storage part 25 between the upper surface 8a of the water tank 8 and the top plate part 1b of the outer box 1 so that it can be taken in and out from the upper side of the outer box 1, so that the lint filter 51 is cleaned. When you do, you can easily put in and out.

(Application examples)
FIG. 9 shows an application example. This application example differs from the above-described embodiment particularly in the configuration of the circulation path and the drying means. As a drying means, a heat pump device using a refrigeration cycle is used instead of the water-cooled heat exchanger 42 and the electric heater. In addition, the same code | symbol is attached | subjected to the part same as above-described embodiment, and a different part is demonstrated.

  Of the circulation air passage 65 disposed outside the water tank 8, the flexible duct 28, the upper air passage 21, and the falling portion 40 are shared by using the same components as the circulation air passage 20 in the above embodiment. ing. Then, the lower end portion 40 a of the falling portion 40 is connected to the inlet 67 a of the heat pump case 67 through the connecting air passage 66. The heat pump case 67 is disposed on the base plate 2.

  Although not shown in detail, the heat pump device includes a compressor that compresses the refrigerant, a condenser that radiates and liquefies the refrigerant discharged from the compressor, and an evaporator that evaporates the refrigerant and cools the surroundings. It is a thing of the known structure using the refrigerating cycle which connected these by the refrigerant pipe. Among them, the evaporator and the condenser are disposed in the heat pump case 67, and the compressor is disposed on the base plate 2. The outlet of the heat pump case 67 is connected to the suction port of the fan casing 69 of the blower 68 disposed on the base plate 2. A discharge port 69a of the fan casing 69 is directed upward, and is connected to the lower portion of the rear air passage 71 via a flexible duct 70 having a bellows-like flexible portion 70a. The rear air passage 71 is curvedly disposed on the back surface 8 b of the water tank 8 so as to avoid the motor 17, and the upper part thereof communicates with the air inlet 11 of the water tank 8.

  Here, the flexible duct 28, the upper air passage 21, the falling portion 40, the connecting air passage 66, the heat pump case 67, the fan casing 69, the flexible duct 70, and the rear air passage 71. Thus, a circulation air passage 65 for circulating the air in the water tank 8 and the air in the rotary drum 14 is formed.

  In the above configuration, when the blower 68 is driven, the air heated by the condenser of the heat pump case 67 is discharged from the discharge port 69a of the fan casing 69 to the flexible duct 70, as shown by the arrow B in FIG. The air is supplied into the water tank 8 through the rear air passage 71 and into the rotating drum 14. The warm air supplied into the rotary drum 14 heats the laundry and takes away the moisture of the laundry, and is blown out from the outlet 10 to the circulation air passage 20 side. The air blown out from the outlet 10 toward the circulation air passage 20 side flows backward through the upper air passage 21 and flows downward through the falling portion 40, and then enters the heat pump case 67. The air that has entered the heat pump case 67 is cooled by the evaporator and dehumidified, and then heated again by the condenser. By repeating this, the laundry is dried.

  According to the application example described above, the drying means is different from that of the above embodiment, but the flexible duct 28, the upper air passage 21, and the falling portion 40 of the circulation air passage 65 are the same as those of the above embodiment. Can be used, and parts can be shared.

  In the drawings, 1 is an outer box, 3 is a laundry doorway, 8 is a water tank, 8a is an upper surface, 8b is a back surface, 10 is a blowout port, 11 is a blower port, 14 is a rotating drum, 15 is a hole, and 17 is a motor ( Drive means), 20 is a circulating air passage, 21 is an upper air passage, 22 is an upper duct, 23 is a lower duct, 23a is an inner bottom surface, 25 is a filter housing portion, 29 is a mounting seat (connecting portion), and 31 is a mounting groove. 32 is a lint filter unit, 36 is a mounting groove, 37 is a fixed lint filter (lint filter), 40 is a falling part, 41 is a folded part, 42 is a rising part, 43 is a heat exchanger, 44 is a blower (blower means) , 47 is a heater case, 51 is a lint filter, 52 is a filter case, 53 is a lid, 54 is a cover, 65 is a circulating air passage, and 67 is a heat pump case.

Claims (3)

An outer box,
A water tank disposed in the outer box, having a blow-out port at the top of the front portion and having a blow-out port at the rear portion,
A rotating drum having a hole through which water can be passed and vented, an axial direction of which is rotatably arranged in the water tank in a state of a horizontal axis in the front-rear direction, accommodates laundry, and is rotated by driving means;
A circulation air passage disposed in the outer box and between the outer box and one end connected to the outlet and the other end connected to the inlet; ,
The air in the water tank is blown out from the outlet to the circulation air passage side, and the air in the circulation air passage is blown into the water tank from the air inlet to circulate the air in the water tank. A blowing means for circulating through the air passage;
A water-cooled heat exchanger that is provided in the circulation air passage and removes moisture contained in the air flowing through the circulation air passage;
The circulation air passage extends rearward along the upper surface of the water tank from the outlet, and then changes downward and extends downward along the rear surface of the water tank near the rear of the water tank. It is turned upward from the folded part and extends upward along the back surface of the water tank, and after returning to the upper surface of the water tank, it is piped to connect to the intake port,
The heat exchanger is disposed in a rising portion extending upward from the folded portion of the circulation air passage,
The rising portion including the heat exchanger and the falling portion that goes from the portion along the upper surface of the water tank to the folded portion in the circulation air passage is connected at the lower portion at the folded portion, and the upper portion at the upper portion A washing / drying machine, wherein the washing tank is connected to the upper surface of the water tank via a connecting portion.   The washing / drying machine according to claim 1, wherein an inner bottom surface of the air passage extending backward from the front upper surface of the water tank in the circulation air passage is inclined downward.   The air passage extending backward from the front upper surface of the water tank in the circulation air passage has an upper duct having the connecting portion on an outer surface and a lower duct assembled to the upper duct, and is used for capturing lint. The washing / drying machine according to claim 1 or 2, wherein the lint filter is positioned between the upper duct and the lower duct and in the vicinity of the connecting portion and is attached by uneven fitting.

Images