KR100683290B1 - Drum type washing and drying machine - Google Patents

Abstract

A rotary drum 6 having a rotational central axis in a substantially horizontal or inclined direction is enclosed in the water tank 21, and the hot air is blown by the blower fan 25 in the rotary drum 6, and the blown hot air is heated by the heater ( A suction duct 20, which is heated by the air 26 and guides the blowing hot air into the rotary drum 6, is integrally formed with the water tank 6, and the heat exchanger 23 is provided in the blower path 28. ) Is fixed and cooling water is supplied to the heat exchanger 23 by cooling means. The heat exchanger 23 is configured to have an uneven cooling surface.

Heat exchanger, cooling surface, drum type, washing machine, dryer

Description

Drum Wash Dryer {DRUM TYPE WASHING AND DRYING MACHINE}             

1 is a longitudinal sectional view of a drum type laundry dryer according to a first embodiment of the present invention;

2 is a perspective view of an essential part of a heat exchanger of a drum type laundry dryer according to a second embodiment of the present invention;

3 is a perspective view of an essential part of a heat exchanger of a drum type laundry dryer according to a third embodiment of the present invention;

4 is a perspective view of an essential part of a heat exchanger of a drum type laundry dryer according to a fourth embodiment of the present invention;

5 is a perspective view of an essential part of a heat exchanger of a drum type laundry dryer according to a fifth embodiment of the present invention;

6 is a perspective view of an essential part of a heat exchanger of a drum type laundry dryer according to a sixth embodiment of the present invention;

7 is a longitudinal sectional view of a conventional drum type laundry dryer.

Explanation of symbols for the main parts of the drawings

5: cover body 6: rotating drum

21: water tank 23: heat exchanger

25: blower fan (blowing means) 26: heater (heating means)

28: blower path 29: cooling water supply valve (cooling means)

30: cooling water hose (cooling means)

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drum type laundry dryer for controlling each stroke of washing, rinsing, dehydration, drying, etc. in a rotating drum having a central axis of rotation in a substantially horizontal or oblique direction.

Conventionally, this type of drum type laundry dryer is constructed as shown in FIG. The configuration will be described below.

As shown in FIG. 7, the water tank 4 is supported by the plurality of suspensions 2 and the dampers 3 in the housing body 1, and the opening of the water tank 4 is opened by the door 5. It opens and closes and arrange | positions the rotating drum 6 in the water tank 4 so that rotation is possible. The rotary drum 6 is driven by the washing motor 7, and a plurality of water passage holes 8 and baffles 9 are provided in the rotary drum 6. The water supply valve 10 for washing water supplies water in the water tank 4, and the water supply valve 11 for cooling water supplies water for cooling water, and is provided in the housing body 1, respectively. The drain port 12 is provided in the water tank 4, and this drain port 12 communicates with the drain path 14 via the drain valve 13.

The blower 15 blows in the water tank 4 via the blower 16, and communicates the heater 17 to this blower 15, and exchanges the inside of the water tank 4 and the blower 15 with the heat exchanger 18. As shown in FIG. Is connected to the water supply valve 11 for cooling water, and the cooling water hose 19 opened in the heat exchanger 18 constitutes a series of drying circulation paths (for example, Japanese Patent Application Laid-Open No. 1997). -215893).

The operation in the above configuration will be described. When the laundry is put into the rotating drum 6 to start the washing process, the water supply valve 10 for washing water opens to supply water to the predetermined water level in the water tank 4. Next, the rotary drum 6 rotates at about 50 r / min, and the injected clothes are lifted by the baffle 9, and the drop is repeated, and washed by the impact force when it falls on the detergent and the water surface. When the washing stroke is finished, the drain valve 13 is driven to drain the wash water through the drain path 14. When the drainage is completed, the rotary drum 6 is rotated at a high speed of about 1000 r / min to dewater. In addition, when the dehydration administration is completed, the transition to the construction administration is carried out.

In the drying stroke, similarly to the washing stroke, the rotating drum 6 is driven to stir the laundry in the rotating drum 6 while the hot air heated by the blower 15 and the heater 17 is discharged from the spout 16 by the rotating drum ( 6) by spraying on the clothes in the evaporation, by heating the moisture contained in the clothes. In addition, the hot air containing steam is sent into the heat exchanger 18, mixed with the cooling water supplied into the heat exchanger 18 from the water supply valve 11 for cooling water, through the cooling water hose 19, and heat exchange Run and cool by dehumidification. In addition, the dehumidified air is heated again by the heater 17 and sent to the rotary drum 6 to dry the clothes. This forms a series of drying cycles.

However, in such a conventional configuration, the duct-shaped heat exchanger 18 must be separately configured, and it is difficult to secure a sufficient volume in the space in the limited housing body 1. In order to reduce the non-uniform drying after drying, it is effective to increase the circulation air volume. However, in the case of the heat exchanger 18 of the type which is mixed with the cooling water and dehumidified, when the air volume is increased, the cooling water is sucked in and the heater 17 is timely wetted. Or re-wet the dried clothing.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and it is possible to perform heat exchange in a space in a compact housing body and to suppress the intake of cooling water even if the air volume is increased, thereby reducing uneven drying after drying. An object of the present invention is to provide a drum type laundry and a dryer.

In order to achieve the above object, the present invention provides a drum type laundry and dryer having the following configuration. That is, a rotating drum having a central axis of rotation in a substantially horizontal or inclined direction is enclosed in a tank having an opening in which clothes are put into and taken out of the rotating drum, opening and closing the opening of the tank by a cover body, and by a blowing means in the rotating drum. The hot air blown by the blowing means is simultaneously heated by the heating means, and a blowing path for guiding the heated hot air into the rotating drum is integrally formed with the water tank, and the heat exchanger is fixed in the blowing path by the cooling means. The heat exchanger is configured to supply coolant to the heat exchanger, and the heat exchanger is configured to have an uneven cooling surface. As a result, the heat exchange can be performed in a space in a compact housing body, and at the same time, the cooling water is prevented from being sucked even if the air volume is increased. It is possible to reduce nonuniform drying after drying.

According to the present invention, there is provided a rotary drum having a central axis of rotation in a substantially horizontal or inclined direction, a tank including the rotary drum and an opening through which clothes are put into and taken out of the rotary drum, and a lid body for opening and closing the opening of the tank; And a heating means for generating warm air, a blowing means for blowing the hot air in the rotary drum, a blowing path which is configured integrally with the water tank and guides the warm air blown by the blowing means in the rotating drum, and the blowing path There is provided a heat exchanger fixed therein and cooling means for supplying cooling water to the heat exchanger, wherein the heat exchanger is provided with a drum type laundry and dryer having an uneven cooling surface.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings. In addition, the same code | symbol is attached | subjected to what is the same structure as a conventional example, and description is abbreviate | omitted. In addition, this invention is not limited by this Example.

(Example 1)

As shown in FIG. 1, the suction duct 20 is comprised integrally with the water tank 21, and the intake port 22 is provided in a part of the water tank 21. As shown in FIG. In this suction duct 20, the plate-shaped heat exchanger 23 is fixed, for example. The fan case 24 is provided in the rear part of the water tank 21, and heats the blowing fan (blowing means) 25 which blows warm air in the rotating drum 6, and the warm air blown by this blowing fan 25. A heater (heating means) 26 is provided in the fan case 24. The duct 27 connects the suction duct 20 and the fan case 24, and constitutes the blowing path 28 by the suction duct 20, the fan case 24 and the duct 27, and the blowing path A part of the body 28, for example, the suction duct 20 is integrally formed with the water tank 21 and configured to guide the warm air blown by the blowing fan 25 into the rotating drum 6.

The water supply valve 29 for cooling water supplies the cooling water to the heat exchanger 23 through the cooling water hose 30, and constitutes cooling means by the cooling water supply valve 29 and the cooling water hose 30. Here, the heat exchanger 23 has an uneven cooling surface. Specific examples of this heat exchanger 23 will be described in the following embodiments.

The operation in the above configuration will be described. In addition, since the operation | movement from washing | cleaning stroke to a dehydration stroke is the same as that of the conventional example, description is abbreviate | omitted.

In the drying stroke, the warm air blown by the blowing fan 25 is heated by the heater 26 and blown into the rotary drum 6 from the jet port 31. The heated warm air exchanges heat with the damp clothes in the rotary drum 6 to be in a state of containing water, and is sent from the inlet 22 to the suction duct 20. At this time, the cooling water flows and falls off the surface of the plate-shaped inclined heat exchanger 23, for example, to cool the heat exchanger 23.

The damp warm air sent into the suction duct 20 comes into contact with the surface of the heat exchanger 23 to deprive heat and dehumidify. The dehumidified warm air enters the fan case 24 through the connecting duct 27, is reheated by the heater 26, and blown into the rotary drum 6 from the jet port 31. Cooling water that has flowed down the surface of the heat exchanger 23 is discharged from the drain port 12 of the water tank 21 through the drain valve 13 and the drain path 14.

As described above, in the present embodiment, the ventilation path 28 is integrally formed with the water tank 21 by the suction duct 20 which guides the warm air blown by the blowing fan 25 into the rotary drum 6. , For example, a plate-shaped heat exchanger 23 is fixed in the suction duct 20, that is, in the blower path 28, to supply the cooling water to the heat exchanger 23 by cooling means, and the heat exchanger 23. ) Is designed to have an uneven cooling surface, so that heat exchange can be performed in the space in the compact housing body 1, and heat exchange is performed on the surface of the heat exchanger 23. In addition, even if the air volume is increased, suction of the cooling water can be suppressed, and uneven drying after drying can be reduced without wetting the heater 26.

(Example 2)

As shown in FIG. 2, the heat exchanger 32 is formed in, for example, a plate shape, is mounted in a suction duct (not shown) constituting a blowing path, and has an uneven cooling surface 320. It is composed. The cooling surface 320 of the heat exchanger 32 is composed of at least one horizontal cooling surface 320a and at least one vertical cooling surface 320b, and their horizontal cooling surface 320a and vertical cooling surface 320b. ) Are alternately arranged toward the blowing direction 41 to form a step shape as a whole. The other configuration is the same as that of the first embodiment.

The operation in the above configuration will be described. In addition, since the basic operation | movement in a drying stroke is the same as that of Example 1, description is abbreviate | omitted.

In the drying stroke, when the coolant flows down the surface of the inclined heat exchanger 32, the cooling water flows down from the upstream to the downstream of the heat exchanger 32, and at the same time, the heat exchange area can be widened. Thereby, drying performance can be improved.

As described above, in the present embodiment, since the cooling surface of the heat exchanger 32 is formed in a stepped shape toward the blowing direction, the cooling water flows down easily, and at the same time, it is easy to spread on the heat exchanger 32. The contact time and the contact area with the damp circulation wind can be ensured, and efficient heat exchange can be performed.

(Example 3)

As shown in FIG. 3, the heat exchanger 33 is formed in a plate shape, for example, and is mounted in a suction duct (not shown) constituting a blowing path, and has an uneven cooling surface 330. It is composed. In addition, the cooling surface 330 includes at least one horizontal cooling surface 330a and at least one vertical cooling surface 330b. One or more grooves 34 are formed on the cooling surface of the heat exchanger 33 at a predetermined angle, preferably 90 degrees with the blowing direction, or a predetermined angle with respect to the flow blowing direction of the cooling water. In FIG. 3, the groove 34 is illustrated as having a straight shape, but the groove 34 may have a wave form, a zigzag shape, or the like. The other configuration is the same as that of the second embodiment.

The operation in the above configuration will be described. In addition, since the basic operation | movement in a drying stroke is the same as that of Example 1, description is abbreviate | omitted.

In the drying stroke, when the coolant flows down the surface of the inclined heat exchanger 33, the coolant can be guided by the grooves 34 to spread over the front surface of the heat exchanger 33, thereby increasing the heat exchange area. Thereby, drying performance can be improved.

As described above, in the present embodiment, the cooling surface of the plate heat exchanger 33 has one or more grooves 34 at a predetermined angle with respect to the blowing direction, preferably at right angles to the flow direction of the cooling water or at a predetermined angle. ), The cooling water can be guided by the grooves 34 to be spread over the entire surface of the heat exchanger 33, and the heat exchange area can be widened, thereby improving drying performance.

(Example 4)

As shown in FIG. 4, the heat exchanger 35 is formed in a plate shape, for example, is mounted in the suction duct (not shown) which comprises a blowing path, and is comprised so that it may have an uneven cooling surface. . The heat dissipation fin 36 is formed inside the cooling surface of the heat exchanger 35. The other configuration is the same as that of the second embodiment.

The operation in the above configuration will be described. In addition, since the basic operation | movement in a drying stroke is the same as that of Example 1, description is abbreviate | omitted.

In the drying stroke, when the coolant flows down the surface of the inclined heat exchanger 35, the heat dissipation fins 36 are formed inside the cooling surface of the heat exchanger 35, whereby the heat exchange area can be widened and dried. It can improve performance.

As described above, in the present embodiment, since the heat dissipation fins 36 are formed inside the cooling surface of the heat exchanger 35, the contact area with the damp circulation wind can be secured widely, and efficient heat exchange can be achieved. You can run

(Example 5)

As shown in FIG. 5, the heat exchanger 37 is formed in, for example, a plate shape, mounted in a suction duct (not shown) constituting a blowing path, and configured to have an uneven cooling surface 38. do. The cooling surface 38 of this heat exchanger 37 is subjected to hydrophilic surface treatment. The other configuration is the same as that of the second embodiment.

The operation in the above configuration will be described. In addition, since the basic operation | movement in a drying stroke is the same as that of Example 1, description is abbreviate | omitted.

In the drying stroke, when the cooling water falls off the surface of the inclined heat exchanger 37, hydrophilic surface treatment is performed on the cooling surface 38 of the heat exchanger 37, whereby the cooling water becomes less likely to become water droplets. Cooling water tends to spread on the surface of the heat exchanger 37, and drying performance can be improved.

As described above, in the present embodiment, since the hydrophilic surface treatment is performed on the cooling surface 38 of the heat exchanger 37, the cooling water is less likely to become water droplets on the surface of the heat exchanger 37, and thus the layered structure is formed. By spreading evenly, the capability of the heat exchanger 37 can be improved.

(Example 6)

As shown in FIG. 6, the heat exchanger 39 is formed in a plate shape, for example, and is mounted in a suction duct (not shown) constituting a blowing path, and has an uneven cooling surface 390. It is composed. One or more slits or cooling water channels 40 are formed in the inclined direction of the heat exchanger 39. The other configuration is the same as that of the second embodiment.

The operation in the above configuration will be described. In addition, since the basic operation | movement in a drying stroke is the same as that of Example 1, description is abbreviate | omitted.

In the drying stroke, when the coolant flows down the surface of the inclined heat exchanger 39, by forming the slit 40 in the inclined direction of the heat exchanger 39, the residual water of the heat exchange surface after the completion of drying is reduced. It flows along the slit 40, falls, and can suppress generation | occurrence | production of the rust and mold of the heat exchange surface by residual water, and can maintain a drying performance.

As described above, in the present embodiment, since the slit 40 is formed in the inclined direction of the heat exchanger 39, the residual water on the surface of the heat exchanger 39 can be suppressed, and the occurrence of mold due to the residual water Therefore, the fall of the heat exchange ability accompanying them can be suppressed.

In the embodiments of the present invention, the heat exchanger has been described as having a stepped bumpy cooling surface, but the bumpy cooling surface of the heat exchanger is not limited to the stepped shape, but the waveform, the zigzag shape or It may have one or more protrusions and / or settlements.

While the invention has been described in terms of preferred embodiments, various changes and modifications are possible by those skilled in the art without departing from the scope of the invention described in the claims below.

As described above, the drum type laundry dryer according to the present invention can perform heat exchange in a space in a compact housing body, and can suppress the intake of cooling water even if the air volume is increased, thereby reducing uneven drying after drying. Therefore, it is useful as a drum type laundry dryer for controlling the respective strokes of washing, rinsing, dehydration, drying and the like in a rotating drum having a central axis of rotation in a substantially horizontal or inclined direction.

Claims (6)

A rotating drum having a central axis of rotation substantially horizontal or inclined; A water tank including the rotary drum and having an opening for putting clothes into and out of the rotary drum; A lid for opening and closing the opening of the tank, Heating means for generating warm air, Blowing means for sending the warm air into the rotating drum, A blowing path configured to be integral with the water tank and guide the warm air blown by the blowing means into the rotating drum; A heat exchanger fixed in the blowing path; Cooling means for supplying cooling water to the heat exchanger, The heat exchanger has a concave-convex shape on the cooling surface Drum laundry dryer. The method of claim 1, The cooling surface of the heat exchanger is formed in a step shape toward the blowing direction. Drum laundry dryer. The method of claim 1, At least one groove formed on the cooling surface of the heat exchanger for guiding the cooling water Drum laundry dryer. The method of claim 1, Inside the cooling surface of the heat exchanger, forming a heat radiation fin Drum laundry dryer. The method of claim 2 or 3, The hydrophilic surface treatment was given to the cooling surface of the said heat exchanger. Drum laundry dryer. The method of claim 2, A slit for guiding the cooling water in the inclined direction of the heat exchanger is formed Drum laundry dryer.

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