JP4831158B2 - Drum type washer / dryer - Google Patents

Description

  The present invention relates to a drum-type washing and drying machine that sequentially controls each process such as washing, rinsing, dehydration, and drying in a rotating drum.

Conventionally, this type of drum type washing and drying machine is configured as shown in FIG. Hereinafter, the configuration will be described. As shown in FIG. 4, a heat exchange path 103 provided with a heat exchange member 102 that communicates with the water receiving tank 101, and a blower path 105 that guides the exhausted air communicated with the heat exchange path 103 to the blowing means 104. And a cooling water supply means 106 for supplying cooling water to the heat exchange member 102, and the heat exchange path 103 includes a lower heat exchange path 103a and an upper heat exchange path 103b partitioned by the heat exchange member 102. At the same time, the heat exchange member 102 is provided with a flow rate lowering means 107 for slowing the flow of the cooling water downstream of the surface through which the cooling water flows.
JP 2007-111141 A

  However, in such a conventional configuration, since the heat exchange member is provided to extend from the front end of the front water receiving tank to the middle of the rear water receiving tank, the cooling water falls from the heat exchange member, Since the time to reach the heat exchange path was short, the heat exchange between the cooling water and the water in the heat exchange path was not performed sufficiently, and there was a problem of sufficiently dehumidifying the air exhausted from the rotating drum. It was.

  An object of the present invention is to solve the above-mentioned conventional problems, and to provide a drum-type washing and drying machine provided with a compact and high drying efficiency heat exchanger.

  In order to achieve the above object, in the drum type washing and drying machine of the present invention, the water receiving tank has a front water receiving tank and a rear water receiving tank, and the heat exchange path is partitioned by the heat exchange member. A lower heat exchanging path and an upper heat exchanging path, and the heat exchanging member extends to substantially the same plane as the engagement surface between the front water receiving tank and the rear water receiving tank.

  As a result, it is possible to ensure a sufficient drop time until the cooling water falls from the heat exchange member and reaches the lower heat exchange path, heat exchange with the cooling water is efficiently performed, and dehumidification performance in the heat exchange path. Can also be improved.

  The drum type washing / drying machine of the present invention can perform heat exchange in a compact space within the main body, and can improve drying efficiency by improving the dehumidifying performance and reduce unevenness in drying after drying.

1st invention WHEREIN: The rotating drum with which the perforated hole was provided in the surrounding wall, the water receiving tank which contains the said rotating drum, the ventilation means for sending an air in the said rotating tank, and it blows by the said ventilation means A heating unit that heats the air; a heat exchange path that communicates with the water receiving tank and includes a heat exchange member; a blower path that guides the exhausted air communicated with the heat exchange path to the blower means; and the heat Cooling water supply means for supplying water for cooling the air in the heat exchange path to the exchange member, the water receiving tank has a front water receiving tank and a rear water receiving tank, and the heat exchange The path has a lower heat exchange path and an upper heat exchange path partitioned by the heat exchange member, and the heat exchange member is substantially flush with an engagement surface between the front water receiving tank and the rear water receiving tank. The cooling water falls from the heat exchange member and the lower heat exchange process It is possible to sufficiently secure the dropping time to reach the heat exchange with the cooling water is carried out efficiently, dehumidification performance in the heat exchanging path can be improved.

  In order to dehumidify the air with moisture during the drying process, the heat exchange effect with the cooling water is efficiently performed by contacting with air more than before, and the drying efficiency is increased by efficiently dehumidifying. Unevenness after drying can be reduced.

  According to a second aspect of the invention, in particular, the heat exchange path is provided with an exhaust port communicating with the water receiving tank below the heat exchange member, a connection portion with the air blowing path is provided above the heat exchange member, and the heat exchange member Since the heat exchange path can be formed in a substantially U shape on both sides of the heat exchange member, the space is limited. It can be set as a compact structure which utilized effectively.

  In particular, the third aspect of the invention provides a flow rate of the cooling water flowing on the heat exchange member by forming a concave slit groove on the upper surface of the plate-like heat exchange member from the upper end to the lower end in the direction in which the cooling water flows. Since the cooling speed of the cooling water scattered in the heat exchange path can be reduced and the contact time with the moist hot air can be increased, the heat exchange action is efficiently performed and the dehumidification is efficiently performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum-type washing / drying machine according to a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view of another part of the drum-type washing / drying machine, and FIG. 3 is the drum-type washing / drying machine. It is a perspective view of the heat exchange path | route.

  As shown in FIG. 1, the rotating drum 21 is formed in a bottomed cylindrical shape, and a large number of through holes 22 are provided on the entire outer peripheral portion, and are rotatably disposed in a water receiving tank 23. A rotary shaft 24 is provided in the tilt direction at the rotation center of the rotary drum 21, and the axial center direction of the rotary drum 21 is tilted downward from the front side toward the back side. A motor 25 attached to the back surface of the water receiving tank 23 is connected to the rotating shaft 24, and the rotating drum 21 is driven to rotate in the forward and reverse directions. Several protruding plates 26 are provided on the inner wall surface of the rotating drum 21.

  An opening provided in the upward inclined surface on the front side of the water receiving tub 23 is covered with a lid 27 so as to be freely opened and closed, and by opening the lid 27, the laundry can be taken in and out of the rotary drum 21 through the clothing entrance 28. ing. Since the lid 27 is provided on the upward inclined surface, the laundry can be carried out without bending the waist.

  The water receiving tank 23 is suspended from the main body 29 so as to be swingable by a spring body 30 and a damper 31. One end of the drainage path 32 is connected to the lower part of the water receiving tank 23, and the other end of the drainage path 32 is connected to the drain valve 33. The washing water in the water receiving tub 23 is drained. The water supply valve 34 supplies water into the water receiving tank 23 through the water supply path 35. The water level detection means 36 detects the water level in the water receiving tank 23.

In the present embodiment, the rotation shaft 24 is provided in the tilt direction at the rotation center of the rotary drum 21, and the axial center direction of the rotary drum 21 is inclined downward from the front side toward the back side. However, the rotating shaft 24 may be provided in the horizontal direction at the rotation center of the rotating drum 21 and the axial center of the rotating drum 21 may be disposed in the horizontal direction.

  In FIG. 2, the structure of the drying function will be described with a cross-sectional view different from FIG. The drying function includes a heater (heating means) 37, an air blowing fan (air blowing means) 38, and a fan case (air blowing path) 39 that accommodates the heater 37 and the air blowing fan 38 therein. 29 is attached. In the water receiving tank 23, a hot air intake port 40 for taking in the air in the water receiving tank 23 is provided in the trunk portion of the water receiving tank 23, and a hot air blowing port 41 is provided in the back surface of the water receiving tank 23. The water receiving tank 23 is divided into a front water receiving tank 23a and a rear water receiving tank 23b, and is created by engaging them.

  Further, the water receiving tank 23 is integrally provided with a heat exchange path 42 so that one end communicates with the hot air intake port 40, and the other end of the heat exchange path 42 is a first bellows hose (air blowing path) 43. Is connected to the intake end 39a of the fan case 39. On the other hand, the exhaust end 39 b of the fan case 39 is connected to the other end of the rear air supply path (air supply path) 44 provided integrally with the water receiving tank 23 so that one end communicates with the hot air blowing port 41 of the water receiving tank 23. The second bellows hose 45 is connected. In addition, a back surface through hole 46 is provided on the back surface of the rotating drum 21 at a position corresponding to the hot air blowing port 41, and air from the warm air blowing port 41 is blown into the rotating drum 21. .

  A plate-shaped heat exchange member 47 inclined downward from the front side to the back side is attached to the heat exchange path 42 above the hot air intake port 40, and the heat exchange path 42 is a heat exchange member 47. Is divided into a lower heat exchange path 42a and an upper heat exchange path 42b, and the lower heat exchange path 42a and the upper heat exchange path 42b communicate with each other on the lower end 47b side of the heat exchange member 47 via the communication port 42c. The path is substantially U-shaped. The cooling water supply valve (cooling water supply means) 48 supplies cooling water from the water supply cap 50 to the upper end portion 47a side of the heat exchange member 47 via the cooling water hose 49. The cooling water supply valve 48 and the cooling water The hose 49 and the water supply cap 50 constitute cooling water supply means.

  Here, since the heat exchange member 47 extends to substantially the same plane as the engagement surface between the front water receiving tank 23a and the rear water receiving tank 23b, the cooling water falls from the heat exchange member 47 and lower heat It is possible to ensure a sufficient drop time until the exchange path 42a is reached, to efficiently perform heat exchange with the cooling water, and to improve the dehumidifying performance in the heat exchange path 42. In addition, in order to dehumidify the air having moisture during the drying process, the heat exchange action with the cooling water is efficiently performed by contacting with the air of a larger amount than before, and the drying efficiency is improved by the efficient dehumidification. In addition, the unevenness in drying after drying can be reduced.

  FIG. 3 is a cross-sectional view of the heat exchange member 47. On the upper surface 47c of the heat exchange member 47, a plurality of ribs (flow velocity reduction means) 53 having a predetermined height are provided substantially perpendicular to the direction in which the cooling water flows. The rib 53 is provided so as to protrude from the upper surface 47 c of the heat exchange member 47 where the cooling water flows, so that the cooling water collides. It is scattered to the upper heat exchange path 42b. Then, ribs 53 are provided on the upper end portion 47a side and the intermediate portion of the heat exchange member 47 to which the cooling water is supplied from the water supply base 50 so that the scattered cooling water is not sucked into the fan case (air blowing path) 39 side. Are not provided, and are provided only on the downstream portion of the upper surface 47c.

That is, since the rib (flow velocity lowering means) 53 is provided only in the downstream portion of the upper surface 47c, the first bellows hose connected to the intake end 39a of the fan case 39 through which the air that has passed through the upper heat exchange path 42b flows. The cooling water that can be disposed at a position away from the inlet of the (air blowing path) 43 and collides with the ribs 53 and scatters to the upper heat exchange path 42b together with the air passing through the upper heat exchange path 42b. It is possible to prevent entry.

  In the drum type washing and drying machine having the above-described configuration, the washing process, the rinsing process, the dehydrating process, and the drying process are executed by the control operation of the control device 54.

  The operation in the above configuration will be described. Since the operation from the washing process to the dehydration process is the same as the operation of the conventional example, the description thereof is omitted.

  In FIG. 2, in the drying process, as shown by the white arrow, the air blown by the rotation of the blower fan 38 is heated to a predetermined temperature by the heater 37 and passes through the second bellows hose 45 and the rear blower path 44. Then, the air is blown into the water receiving tank 23 from the hot air blowing port 41 and further blown into the rotating drum 21 from the rear through hole 46. The heated hot air deprives moisture from the wet laundry in the rotating drum 21 and becomes hot air having moisture. Thereafter, the hot air having moisture passes through the through hole 22 from the inside of the rotary drum 21, is discharged to the water receiving tank 23, and is further blown from the hot air intake 40 to the heat exchange path 42.

  At this time, the cooling water supply valve 48 is in the ON state, and the cooling water falls from the water supply cap 50 to the upper end 47a side of the heat exchange member 47, and the lower end of the upper surface 47c of the heat exchange member 47 as indicated by the broken line arrow. It flows toward the portion 47b and falls from the tip of the lower end portion 47b of the heat exchange member 47 to the lower heat exchange path 42a side. The cooling water is discharged into the water receiving tank 23 through a drain hole 52 provided on the bottom surface of the lower heat exchange path 42 a and communicating with the water receiving tank 23, and is discharged outside the apparatus through the drainage path 32.

  The wet warm air sent from the warm air intake 40 into the lower heat exchange path 42 a of the heat exchange path 42 first comes into contact with the lower surface 47 d of the heat exchange member 47. At this time, since the lower surface 47d of the heat exchange member 47 is also cooled by the cooling water flowing on the upper surface 47c of the heat exchange member 47, heat exchange is performed between the wet warm air and the lower surface 47d of the heat exchange member 47. The action is performed, and the wet warm air is dehumidified (first dehumidifying step).

  Further, the wet hot air is sent to the upper heat exchange path 42b on the lower end 47b side of the heat exchange member 47 through the communication port 42c. At this time, the wet hot air is sent to the lower end portion of the heat exchange member 47. The cooling water falling from 47b is rolled up and scattered, heat exchange action is performed with the scattered cooling water, and the wet hot air is dehumidified (second dehumidifying step).

  Thereafter, the wet warm air is sent to the upper heat exchange path 42b, and comes into contact with the upper surface 47c of the heat exchange member 47 and the cooling water flowing therethrough. At this time, the direction in which the cooling water flows and the direction in which the wet warm air flows are opposed to each other. Thereby, the moist warm air is subjected to heat exchange action with the upper surface 47c of the heat exchange member 47 and the cooling water flowing therethrough, and the moist warm air is dehumidified (third dehumidification step).

  The flow of the cooling water on the upper surface 47c of the heat exchange member 47 in the third dehumidifying step will be described with reference to FIG. The cooling water that has dropped on the upper surface 47c of the heat exchange member 47 on the upper end portion 47a side flows down on the upper surface 47c of the heat exchange member 47 toward the lower end portion 47b, as indicated by an arrow. At this time, the rib 53 is not provided on the upper end 47 a side of the upper surface 47 c of the heat exchange member 47, so that the cooling water flows at a high speed, and the rib 53 is provided in the vicinity of the lower end 47 b of the heat exchange member 47. As a result, the flow-down speed becomes slower.

The wet hot air winds up and disperses the cooling water falling from the lower end portion 47b of the heat exchange member 47, and heat exchange is performed with the cooling water that collides with the ribs 53 and scatters. Since it is slow, the contact time with the moist hot air can be extended, and the moist hot air efficiently exchanges heat with the cooling water flowing therethrough and is efficiently dehumidified.

  In this way, the humid hot air that has passed through the three dehumidifying steps, the first dehumidifying step, the second dehumidifying step, and the third dehumidifying step, is efficiently cooled and dehumidified air, and is supplied to the fan through the first bellows hose 43. The air is sent from the intake end 39 a of the case 39 into the fan case 39 and reaches the blower fan 38.

  By the air circulation as described above, the laundry is gradually dried, and the drying process is finished after a predetermined time has elapsed or when the laundry reaches a predetermined dryness.

  In this way, the wet warm air is efficiently dehumidified in the drying process, so that the time of the drying process can be shortened and the unevenness in drying after drying can be reduced.

  As described above, the drum type washing and drying machine according to the present invention can efficiently perform heat exchange in a compact space in the main body, and the drying efficiency is improved by the improvement of the dehumidifying performance, so that the drying unevenness after drying is reduced. Since it can be reduced, it is useful as a drum-type washing and drying machine that sequentially controls each process such as washing, rinsing, dewatering, and drying in a rotating drum having a rotation center axis in a substantially horizontal direction or an oblique direction.

The longitudinal cross-sectional view of the drum type washing-drying machine of the 1st Embodiment of this invention Longitudinal sectional view of another part of the drum type washing and drying machine Perspective view of heat exchange path of the drum type washing and drying machine Partial cutaway perspective view of a conventional drum-type washing and drying machine

Explanation of symbols

21 Rotating drum 23 Water receiving tank 29 Main body 37 Heater (heating means)
38 Blower fan (Blower unit)
39 Fan case (air flow path)
42 Heat exchange path 47 Heat exchange member 48 Cooling water supply valve (cooling water supply means)

Claims (3)

A rotating drum provided with a through hole in the peripheral wall, a water receiving tank containing the rotating drum, a blowing means for sending air into the rotating tank, and a heating means for heating the air blown by the blowing means A heat exchange path that communicates with the water receiving tank and has a heat exchange member, a blower path that guides air discharged through the heat exchange path to the blower, and the heat exchange with the heat exchange member Cooling water supply means for supplying water for cooling the air in the path, the water receiving tank has a front water receiving tank and a rear water receiving tank, and the heat exchange path is the heat exchange A drum type having a lower heat exchanging path and an upper heat exchanging path partitioned by members, and the heat exchanging member extending to substantially the same plane as the engaging surface of the front water receiving tank and the rear water receiving tank. Washing and drying machine. The heat exchanging path is provided with an exhaust port communicating with the water receiving tank below the heat exchanging member, a connection part with the air blowing path is provided above the heat exchanging member, and substantially U on the upper and lower surfaces of the heat exchanging member. The drum-type washing / drying machine according to claim 1, wherein the drum-type washing / drying machine is configured to form a letter-shaped path. The drum-type washing and drying machine according to claim 1 or 2, wherein a concave slit groove is formed on the upper surface of the plate-shaped heat exchange member from the upper end to the lower end in the direction in which the cooling water flows.