JP2007111411A - Drum type washing/drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively perform dehumidification by efficiently performing heat exchange in a compact space in a body. <P>SOLUTION: This machine includes: a heat exchange passage 42 communicated with a water receiving tub 23 and provided with a heat exchange member 47; a blowing passage 39 communicated with the heat exchange passage 42 to guide the discharged air to the blowing means 38; and a cooling water supply means 48 for supplying cooling water to the heat exchange member 47. The heat exchange passage 42 has a lower heat exchange passage 42a and an upper heat exchange passage 42b partitioned by the heat exchange member 47, and the heat exchange member 47 is formed by providing a flow velocity lowering means 53 for delaying the flow of cooling water on a downstream part of the surface where the cooling water flows. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drum-type washing and drying machine that sequentially controls each process such as washing, rinsing, dewatering, 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. 5, a water receiving tub 3 is supported in a main body 1 by a plurality of suspensions (not shown) and a damper 2, and an opening 4 of the water receiving tub 3 is opened and closed by a door (not shown). The rotating drum 5 is rotatably disposed in the water receiving tank 3. The rotating drum 5 is driven by a motor 6, and a large number of through holes 7 and baffles 8 are provided in the rotating drum 5. The washing water supply valve 9 supplies water into the water receiving tank 3, and the cooling water supply valve 10 supplies cooling water and is provided in the main body 1. A drain port 11 is provided in the water receiving tank 3, and the drain port 11 communicates with a drain path 13 via a drain pump 12.

  The blower 14 blows air into the water receiving tank 3 through the blowout port 15. The heater 16 is connected to the blower 14, and the water receiving tank 3 and the blower 14 are connected to each other by the heat exchanger 17. A series of drying circulation dehumidification paths are constituted by the cooling water hose 18 directly connected to the water supply valve 10 and opened to the heat exchanger 17 (see, for example, Patent Document 1).

  The operation in the above configuration will be described. When the laundry is put into the rotating drum 5 and the washing process is started, the washing water supply valve 9 is opened to supply water into the water receiving tank 3 to a predetermined water level. Next, the rotating drum 5 rotates at about 50 r / min, and the loaded laundry is lifted up by the baffle 8 and repeatedly falls, and is washed by the detergent water and the impact force when dropped onto the water surface. When the washing process ends, the drainage pump 12 is driven to drain the washing water through the drainage path 13. When drainage is completed, the rotating drum 5 is rotated at a high speed of about 1000 r / min to perform dehydration. When the dehydration process is completed, the process proceeds to the drying process.

In the drying process, as in the washing process, the rotating drum 5 is driven to stir the laundry in the rotating drum 5, and hot air heated by the blower 14 and the heater 16 is applied to the clothes in the rotating drum 5 from the outlet 15. Spray and heat and evaporate moisture contained in clothing. Further, the high-temperature air containing steam is sent into the heat exchanger 17 through the exhaust hose 17a, and the cooling water supplied into the heat exchanger 17 from the cooling water supply valve 10 through the cooling water hose 18. And is dehumidified by cooling and heat exchange. Further, the dehumidified air is heated again by the heater 16 and sent to the rotary drum 5 to dry the clothes. This forms a series of drying cycles.
JP 11-333185 A

  However, in such a conventional configuration, since the heat exchanger 17 is a hollow substantially rectangular parallelepiped, in order to ensure sufficient drying performance, the heat exchanger itself must be enlarged, but the limited main body There is a problem that it is difficult to secure a sufficient volume in the space within 1.

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

  In order to achieve the above object, the drum type washing and drying machine of the present invention comprises a heat exchange path provided with a heat exchange member in communication with a water receiving tub, and air blowing means in communication with the heat exchange path. And a cooling water supply means for supplying cooling water to the heat exchange member, and the heat exchange route has a lower heat exchange route and an upper heat exchange route partitioned by the heat exchange member The heat exchange member is provided with a flow velocity lowering means for slowing the flow of the cooling water at the downstream portion of the surface through which the cooling water flows.

  As a result, the flow rate lowering means can slow down the flow rate of the cooling water, the heat exchange action with the cooling water is efficiently performed, and the moisture is efficiently dehumidified.

  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.

  According to a first aspect of the present invention, there is provided a rotating drum having a cylindrical shape with a plurality of through holes in a peripheral wall and having a rotating shaft in a horizontal direction or an inclined direction, and a water receiver elastically supported in a main body and including the rotating drum. A tank, a blowing means for sending wind into the rotating drum, a heating means for heating the wind blown by the blowing means, a heat exchange path provided with a heat exchange member in communication with the water receiving tank, And a cooling water supply means for supplying cooling water to the heat exchange member, and the heat exchange path includes the heat exchange member. The heat exchange member has a lower heat exchange path and an upper heat exchange path that are partitioned by each other. Sometimes a damp sky In order to dehumidify, it is possible to dehumidify using two surfaces, the upper surface and the lower surface of the heat exchange member, so that the dehumidification performance can be improved and the drying efficiency can be improved. Since the heat exchange member can be sandwiched between the two sides of the heat exchange member, it can be formed into a compact configuration that effectively uses a limited space. In addition, since the flow rate lowering means can slow down the flow rate of the cooling water, the heat exchange action with the cooling water is efficiently performed and the dehumidification is efficiently performed, thereby increasing the drying efficiency and drying after drying. Kimura can be reduced.

  In the second invention, in particular, the flow velocity lowering means of the first invention is constituted by a rib protruding from the surface through which the cooling water flows and colliding with the cooling water, so that the cooling water collides with the rib and performs heat exchange. It is possible to efficiently dehumidify by increasing the cooling effect of the circulating air that is scattered in the path and has moisture.

  In the third invention, in particular, the flow velocity reducing means of the second invention is configured such that the cooling water collides with the rib so that the cooling water collides with the rib so that the downstream side protrudes from the surface through which the cooling water flows. When colliding, it can be easily scattered in the heat exchange path.

  In particular, the fourth aspect of the invention provides a contact area between the heat exchange member and the moist circulating air by providing a heat radiation fin integrally on the lower surface of the heat exchange member of any one of the first to third aspects of the invention. It can be further widened, and more efficient heat exchange can be 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, and FIG. 2 is a longitudinal sectional view of another part of the drum-type washing / drying machine.

  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 direction 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.

  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.

  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 upper surface 47c of the heat exchange member 47 is moved as indicated by the broken line arrow. It flows toward the lower end 47b and falls from the tip of the lower end 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 warm air winds up and disperses the cooling water falling from the lower end portion 47b of the heat exchange member 47, and heat exchange action 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 of the first dehumidifying step, the second dehumidifying step, and the third dehumidifying step is efficiently cooled and dehumidified air, and the fan is passed 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.

  In the above process, since the cross-sectional area of the upper heat exchange path 42b is larger than the cross-sectional area of the communication port 42c, the flow rate of the wet warm air in the upper heat exchange path 42b is lower than the flow rate in the communication port 42c. As a result, the scattered cooling water rides on the flow of the warm air and does not enter the fan case 39 from the intake end 39a of the fan case 39, and on the heat exchange member 47 in the middle of the upper heat exchange path 42b. Since it falls, the water droplet does not reach the heater 37.

  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.

  In the present embodiment, a plurality of ribs 53 having a predetermined height are provided substantially perpendicular to the direction in which the coolant flows, but the rib 53 has a predetermined angle with respect to the direction in which the coolant flows. Even if provided, the same effect can be obtained.

(Embodiment 2)
FIG. 4 is a sectional view of the heat exchange member 47 of the drum type washer / dryer according to the second embodiment of the present invention. The rib 53a that collides with the cooling water provided on the heat exchange member 47 is provided so as to be inclined so that the downstream side protrudes from the surface through which the cooling water flows. Other configurations are the same as those of the first embodiment. Thereby, when cooling water collides with the rib 53a, it can be made easy to scatter to the upper heat exchange path 42b.

(Embodiment 3)
FIG. 5 is a bottom view of the heat exchange member 47 of the drum type washer / dryer according to the third embodiment of the present invention. On the lower surface 47d of the heat exchanging member 47, the radiating fins 54 are integrally formed substantially in parallel with the direction in which the wet warm air flows. Other configurations are the same as those of the first embodiment.

  The operation in the above configuration will be described. The basic operation in the drying process is the same as that in the first embodiment, and the description thereof is omitted.

  In the first dehumidifying step, 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. Although the action is performed and the moist warm air is dehumidified, the heat-dissipating fins 54 are integrally formed on the lower surface 47d of the heat exchange member 47 substantially in parallel with the direction in which the moist warm air flows. The area where the action is performed can be widened, and the moist warm air is more efficiently dehumidified, so that the time of the drying process can be further shortened and uneven 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 Sectional view of the heat exchange member of the drum type washing and drying machine Sectional drawing of the principal part of the heat exchange member of the drum type washing-drying machine of the 2nd Embodiment of this invention The bottom view of the heat exchange member of the drum-type washing / drying machine of the 3rd Embodiment of this invention 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)
53 Rib (Mechanism for reducing flow velocity)

Claims (4)

A rotating drum having a plurality of through holes in a peripheral wall and formed in a cylindrical shape and having a rotating shaft in a horizontal direction or an inclined direction, a water receiving tank elastically supported in a main body and containing the rotating drum, and the rotating drum A blowing means for sending air into the heating means, a heating means for heating the wind blown by the blowing means, a heat exchange path provided with a heat exchange member in communication with the water receiving tank, and a communication with the heat exchange path. And a cooling water supply means for supplying cooling water to the heat exchanging member, and the heat exchanging path is a lower heat partitioned by the heat exchanging member. A drum-type washing and drying machine having an exchange path and an upper heat exchange path, wherein the heat exchange member is provided with a flow rate reducing means for slowing the flow of the cooling water downstream of the surface through which the cooling water flows. The drum-type washing / drying machine according to claim 1, wherein the flow velocity lowering means is constituted by a rib protruding from a surface through which the cooling water flows and colliding with the cooling water. The drum-type washing / drying machine according to claim 2, wherein the flow velocity lowering means is configured such that the rib colliding with the cooling water is inclined so that the downstream side protrudes from the surface through which the cooling water flows. The drum-type washing / drying machine according to any one of claims 1 to 3, wherein heat radiation fins are integrally provided on a lower surface of the heat exchange member.