JP2003062384A - Washing/drying machine and water-cooled heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger which has the high efficiency of cooling and dehumidification. SOLUTION: Protrusive streaks 17 are provided in a wall surface of a water- cooled duct 14 of a water-cooled dehumidifier 13 of a washing/drying machine, and cooling water 15, which flows down on the wall surface, is guided in a zigzag state, so that a flow-down area can be enlarged.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a washer / dryer and a water-cooled heat exchanger.

[0002]

2. Description of the Related Art A washing / drying machine for washing, dehydrating and drying is, as described in JP-A-11-347282, a water-cooled heat exchanger for cooling and dehumidifying air sucked from a washing tub by a blower. A heater for heating the dehumidified air and blowing it into the washing tub is provided. The water-cooled heat exchanger supplies cooling water into a dehumidifying duct that dehumidifies the moist air sucked out of the washing tub, and the flow of air flowing through the dehumidifying duct causes water droplets of the cooling water to jump up to cool the air and the cooling water. The heat exchange (cooling and dehumidifying) efficiency is improved by the contact between the two.

[0003]

However, in the washer / dryer, since the heater for heating the air is provided on the downstream side of the water-cooled heat exchanger, the water droplets generated in the heat exchanger ride on the circulating air. It is necessary to prevent flying to the position of the heater.

In order to stop the water droplets generated in the heat exchanger in the heat exchanger, if a room for dropping the water droplets is provided at the outlet of the heat exchanger, the heat exchanger becomes large, and the water droplet shielding rib is provided. The provision of the above causes a problem that the ventilation resistance increases and the ventilation amount decreases.

Since the heat exchanger and the outer tub are composed of separate members, there is a problem that a space is created between the heat exchanger and the outer tub and the size of the washer / dryer increases.

An object of the present invention is to widen the contact area of air and cooling water to improve the heat exchange (cooling / dehumidifying) efficiency and prevent water droplets from riding on air and flying downstream. Another object of the present invention is to further reduce the size of the water-cooled heat exchanger (water-cooled dehumidifier) as described above. Another object of the present invention is to realize a water-cooled heat exchanger (water-cooled dehumidifier) as described above with a small ventilation resistance. Another object of the present invention is to further reduce the size of the washer / dryer as described above.

[0007]

The washer / dryer of the present invention comprises:
A vertical type washer / dryer for drying laundry in a washing tub located inside an outer tub by circulating air in a washing tub for washing and dehydrating laundry to a water-cooling dehumidifier to cool and dehumidify An air passage for circulating the air of the water-cooled dehumidifier is integrated with the outer tub of the washer / dryer.
The washing / drying machine of the present invention is a washing / drying machine for drying laundry in a washing tub by circulating air in a washing tub for washing and dehydrating laundry to a water-cooling dehumidifier for cooling and dehumidifying, The water-cooled dehumidifier has a cooling water supply pipe for discharging cooling water to the upper surface of a substantially vertical wall surface facing an air passage in which air circulates and for flowing the cooling water down the wall surface, and cooling the wall surface. It is characterized in that it is provided with a cooling water flow area expanding member provided in the water flow area. The washing / drying machine of the present invention is a washing / drying machine for drying laundry in a washing tub by circulating air in a washing tub for washing and dehydrating laundry to a water-cooled dehumidifier for cooling and dehumidifying, The water-cooled dehumidifier has a cooling water supply pipe that causes cooling water to flow to the upper surface of a substantially vertical wall surface facing an air passage in which air circulates and flow down along the wall surface. It is characterized in that it is provided with a member for flowing down a distance longer than a substantially vertical distance of the wall surface. Further, the water-cooled heat exchanger of the present invention is a water-cooled heat exchanger for cooling air by directly contacting cooling water with air flowing through the ventilation passage, wherein the ventilation passage has a substantially vertical wall surface facing the air passage. It is characterized in that a cooling water supply pipe is provided at an upper portion to flow the cooling water to the wall surface so as to be transmitted along the wall surface and flow down, and a cooling water flow area expanding member provided in a cooling water flow area of the wall surface.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing the structure of a washer / dryer according to a first embodiment of the present invention. FIG. 2 is a vertical sectional front view (a) showing an enlarged view of the water-cooled dehumidifier (heat exchanger) and an AA cross-sectional view (b) thereof.

In this washer / dryer, an upper frame opening 3a is provided in an outer frame 1 in which a clothes inlet 1a is openably and closably covered by an outer lid 2.
The outer tub 3, which is openably and closably covered with the inner lid 4, is suspended and supported in a vibration-proof state.

A washing tub 5 for containing laundry is rotatably supported in the outer tub 3, and a stirring blade 6 for stirring the laundry is rotatably supported at the bottom of the washing tub 5. The washing tub 5 has a large number of small holes 5a for centrifugal dehydration and ventilation on its side wall. An electric drive device 7 attached to the outside of the bottom wall of the outer tub 3 rotationally drives the washing tub 5 and the stirring blades 6. Also, the outer tank 3
The drainage port 3b opened on the bottom wall of is connected to the drainage hose 9 via the drainage solenoid valve 8.

In the drying device 10 for drying the laundry in the washing tub 5, the air in the outer tub 3 is sucked through the suction port 3c provided on the side wall near the bottom of the outer tub 3 to dehumidify it with water and then to heat it. After that, the air is blown into the washing tub 5 from the blowing nozzle 11 to generate the circulating air 12 to dry the laundry.

A water-cooling type dehumidifier (heat exchanger) 13 for water-cooling and dehumidifying the circulating air 12 is formed integrally with the outer tank 3,
The outer tank 3 is connected to a suction port 3c formed in the outer tank 3
Water cooling / dehumidifying duct 14 in a posture of rising substantially vertically along the rear surface of the side wall of the cooling water, and a cooling water outlet 16a for flowing the cooling water 15 to the upper wall surface on the downstream side of the water cooling / dehumidifying duct 14.
A cooling water supply pipe 16 and a plurality of ridges 17 as a cooling water flow area expanding member provided in the cooling water flow area of the wall surface.

In FIG. 1, the ridge 17 is shown on the end surface of the water-cooling dehumidifying duct 14, but in reality, as shown in FIG. 2, it is located on the front and rear wide side wall surfaces and faces the circulation ventilation passage. To be provided. The water cooling / dehumidifying duct 14 is used for the outer tank 3
Since it will be installed in a narrow space between the outer frame 1 and the rear surface of the, the cross-sectional shape of the ventilation passage is configured to be a wide thin shape with a narrow depth. Specifically, the water cooling / dehumidifying duct 14 has a depth dimension of about 30 mm and a width dimension of 13 mm.
The length is about 0 mm and the length is about 500 mm. Therefore, in order to increase the contact area with the circulating air 12, the cooling water flows out so as to flow down along the front and rear wall surfaces having a wide width (area). The plurality of ridges 17 are arranged in a zigzag shape so as to extend in a substantially horizontal direction on the front and rear wall surfaces of the water cooling / dehumidifying duct 14 in order to reduce an increase in ventilation resistance and have a height dimension of about 3 mm. The cooling water 15 flowing out along the wall surface from the cooling water outlet 16a of the pipe 16 is guided down the wall surface along the wall surface and in the zigzag direction in the horizontal direction by the ridges 17.

A blower 18 for generating circulating air is connected to the upper end (downstream) of the water cooling / dehumidifying duct 14, and the circulating air 12 fed from the blower 18 is heated to be fed to the blowing nozzle 11. Equipped with.

In the washing / drying machine thus constructed, in the washing process, laundry is put into the washing tub 5 and water is supplied with the drainage electromagnetic valve 8 closed to store the washing water in the outer tub 3, The stirring blade 6 is rotated to wash the laundry. In the dehydration step, the drainage electromagnetic valve 8 is opened to drain the wash water in the outer tub 3, and the laundry tub 5 is rotated to perform centrifugal dehydration.

In the drying step, the washing tub 3 and / or the stirring blades 6 are rotated with the drainage solenoid valve 8 open, and the blower 18 is operated to suck out the air in the outer tub 3 from the suction port 3c. After passing through the water cooling / dehumidifying duct 14 to be water cooled and dehumidified, the heater 19 heats the circulating air 12 to blow the laundry from the blowing nozzle 11 toward the laundry in the washing tub 5.

The water-cooled dehumidification of the circulating air 12 passing through the water-cooled dehumidification duct 14 by removing moisture from the laundry in the washing tub 5 and passing through the water-cooling dehumidification duct 14 is conducted from the cooling water outlet 16a of the cooling water supply pipe 16 to the water-cooling dehumidification duct 14. The cooling water 15 that has flowed out to the wall surface is guided along the wall surface in the zigzag state in the horizontal direction by the ridges 17 and spreads over a wide area of the wall surface to flow down (a distance longer than the substantially vertical distance of the wall surface). When the circulating air 12 passes through the water cooling / dehumidifying duct 14, the circulating water 12 is brought into contact with the cooling water 15 flowing down along the wall surface of the water cooling / dehumidifying duct 14 in a large area.

Since the circulating air 12 rises in the water cooling / dehumidifying duct 14 at a high speed, when the cooling water 15 overflows from the tip edge of the ridge 17, the circulating air 12 is blown up into the circulating air 12 to form water droplets on the downstream side. Will fly to. Therefore, it is desirable that the flow rate of the cooling water 15 be such that the cooling water 15 does not overflow along the protrusion 17 in the corner formed by the inner wall surface of the water cooling / dehumidifying duct 14 and the upper surface of the protrusion 17. The circulating air 12 rising in the water-cooled dehumidification duct 14 has a ridge 17
Since it collides with the tip edge of the ridge 17 and causes turbulent flow on the downstream (upper surface) side of the ridge 17, heat is exchanged by contacting well with the cooling water 15 flowing along the corner formed by the upper surface of the ridge 17 and the wall surface. However, cooling and dehumidification can be performed efficiently.

According to such a water-cooled dehumidifier 13, the water-cooled dehumidification duct 14 is guided along the inner wall surface and horizontally by the ridges 17 in a zigzag state while flowing down along the wall surface. It is possible to efficiently cool and dehumidify by contacting the circulating air 12 well in a wide range for heat exchange. Moreover, since the protrusion 17 provided on the inner wall surface of the water cooling / dehumidifying duct 17 has a short height, it is possible to reduce an increase in ventilation resistance, and to prevent the generation of water droplets that fly to the downstream side. You can also Therefore, it is possible to avoid increasing the size of the water-cooled dehumidifier 13. Furthermore, the water-cooled dehumidifier 13 is formed integrally with the outer tank 3,
The wasted space is eliminated and the washer / dryer can be downsized.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a vertical sectional front view (a) and an AA sectional view (b) thereof showing an enlarged view of the water-cooled dehumidifier (heat exchanger) in the second embodiment. The second embodiment is characterized in that the projections provided in multiple stages are arranged in two rows on the wall surface of the water cooling / dehumidifying duct. Overlapping description of the configuration common to the first embodiment will be omitted.

In the water-cooled dehumidifier 13 according to the second embodiment, the front and rear wall surfaces in the water-cooled dehumidifier duct 14 are vertically divided into two by a partition plate 20, and the divided two regions are respectively provided with a substantially horizontal direction. The ridges 17 extending in the zigzag state are arranged in multiple stages, and the cooling water outlet 1 of the cooling water supply pipe 16 is
The cooling water 15 which has flowed out along the wall surface of each row from 6a, 16b is guided along the wall surface and by the ridges 17 in a zigzag state in the horizontal direction to flow down along the wall surface.

Such a water-cooled dehumidifier 13 has a ridge 17
Since the cooling water 15 flows down along the two paths, if the total amount of the cooling water 15 to be flowed down is the same, the flow rate of the cooling water 15 flowing through each of the cooling water can be halved. The height of each ridge 17 can be reduced to significantly reduce the increase in ventilation resistance.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a vertical sectional front view (a) showing an enlarged view of the water-cooled dehumidifier according to the third embodiment.
FIG. 3B is a sectional view (b) taken along line AA. The third embodiment is characterized in that the projections provided in multiple stages on the wall surface of the water cooling / dehumidifying duct are arranged in three rows and inclined. Overlapping description of the configuration common to the above-described embodiment will be omitted.

The water-cooling type dehumidifier 13 in the third embodiment has three rows of protrusions 17 extending on the front and rear wall surfaces in the water-cooling dehumidification duct 14 at an angle of about 20 degrees with respect to the horizontal direction. The cooling water supply pipe 16 is arranged in multiple stages in a zigzag state.
The cooling water 15 flowing out along the wall surface of each row from the cooling water outlets 16a, 16b, 16c is guided along the wall surface and obliquely by the ridges 17 in a zigzag state to flow down the wall surface. It is a composition. Further, the ridges 17 in each row are arranged so that the side of the ridges 17 in each row that is closed by the inclination of the ridges 17 in the adjacent row is inserted into the region opened to increase the arrangement density of the ridges 17. ing.

The water-cooled dehumidifier 13 as described above is provided with the protrusion 17
Since the cooling water 15 along the flow path has three systems, if the total amount of the cooling water 15 to be made to flow is the same, the flow rate of the cooling water 15 flowing to each of the flow paths can be reduced to 1/3, and Since the cooling water 15 easily flows down from the inclined ridges 17, the height of each ridge 17 can be further reduced to greatly reduce the increase in ventilation resistance. Moreover, since the ridges 17 are inclined, the turbulent flow generated downstream of the ridges 17 becomes a vertically long vortex, which further reduces the ventilation resistance. In addition, since the ridges 17 in each row are arranged intricately, the arrangement density is increased, the flow-down area of the cooling water 15 is expanded, and heat exchange (cooling / dehumidifying) efficiency can be improved.

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 5 is an enlarged vertical front view showing the water-cooled dehumidifier according to the fourth embodiment (a).
FIG. 3B is a sectional view (b) taken along line AA. The fourth embodiment is characterized in that the cooling water flow area expanding member is formed of punching metal. Overlapping description of the configuration common to the above-described embodiment will be omitted.

In the water-cooling dehumidifier 13 according to the fourth embodiment, the punching metal 21 is installed along the front and rear wall surfaces in the water-cooling dehumidification duct 14 with a minute gap therebetween.
Three cooling water outlets 16a, 16 of the cooling water supply pipe 16
b, 16c, the cooling water 15 is caused to flow out along the wall surface in the water-cooling dehumidification duct 14, and the cooling water 15 is distributed to the entire area of the minute gap by the capillary force of the minute gap between the wall surface of the water-cooling dehumidification duct 14 and the punching metal 21. It is configured to flow down so as to diffuse. The punching metal 21 has a large number of openings 2
1a, the cooling water 15 is exposed to the air passage in the opening 21a and comes into contact with the circulating air 12 to cool and dehumidify the circulating air 12. Further, the cooling water 15 also cools the punching metal 21, so that the circulating air 12 contacting the punching metal 21 is cooled and dehumidified.

Circulating air 1 flowing in the water-cooled dehumidifying duct 14
2 is turbulent due to a step due to the opening 21a of the punching metal 21, but by forming the punching metal 21 from a thin steel material, the increase in ventilation resistance due to this turbulent flow can be made extremely small.

The same effect can be expected by using an expander mesh, gauze or the like in place of the punching metal 21 in the cooling water flow area expanding member in the fourth embodiment. Punching metal 21
It is preferable to use a metal having excellent thermal conductivity so as not to cause heat resistance, but when there are problems such as cost and rust, it is possible to change to a material such as resin.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 6 is an enlarged perspective view showing a part of the water-cooled dehumidifier according to the fifth embodiment.
The fifth embodiment is characterized in that the projection provided on the inner wall of the water cooling / dehumidifying duct is formed in a spiral shape. Overlapping description of the configuration common to the above-described embodiment will be omitted.

The water-cooled dehumidifier 13 in this embodiment
Is a configuration in which continuous spiral projections 17 are provided on four wall surfaces in the water cooling / dehumidifying duct 14, and cooling water is spirally flowed down along the wall surfaces.

In the fifth embodiment, since the four wall surfaces in the water cooling / dehumidifying duct 14 can be used as the lower surface of the cooling water flow, the contact area between the cooling water and the circulating air can be increased. The ridges 17 can also be formed in a plurality of spiral shapes.

Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 7 is an enlarged perspective view showing a part of the water-cooled dehumidifier according to the sixth embodiment. The sixth embodiment is characterized in that the inside of the water cooling / dehumidifying duct is partitioned to form two air passages, and a spiral protrusion is provided on the inner wall surface of each air passage. Overlapping description of the configuration common to the above-described embodiment will be omitted.

The water-cooled dehumidifier 13 in this embodiment
Divides the inside of the water cooling / dehumidifying duct 14 into two vertically divided air passages by a partition plate 22, and provides continuous spiral protrusions 17 on four wall surfaces in each air passage to transmit cooling water to the wall surfaces. It is configured to flow down in a spiral shape.

In the sixth embodiment, the inside of the water cooling / dehumidifying duct 14 is partitioned to form two air passages, and the four wall surfaces of each air passage can be used as the lower surface of the cooling water flow.
The contact area between the cooling water and the circulating air can be increased. The ridges 17 can also be formed in a plurality of spiral shapes.

The spiral projection 17 in the above fifth and sixth embodiments may be replaced with a spiral hose for water passage inserted along the wall surface of the water cooling / dehumidifying duct 14.

Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 8 is an enlarged perspective view showing a part of the water-cooled dehumidifier according to the seventh embodiment. In the seventh embodiment, the cooling water that has traveled down the wall surface of the water cooling / dehumidifying duct and flows down to the lower end of the wall surface is prevented from being blown up by the circulating air flowing into the water cooling / dehumidifying duct and generating water droplets flying to the downstream side. The feature is that the drainage guide convex portion is provided at the lower end portion of the water cooling and dehumidifying duct. Overlapping description of the configuration common to the above-described embodiment will be omitted.

In this embodiment, the water-cooled dehumidifier 1
3 connects the lower end of the water cooling / dehumidifying duct 14 to a suction port 3c provided in the outer tank 3. Circulating air 1 flowing horizontally from the suction port 3c to the lower end of the water cooling / dehumidifying duct 14
At the lower end portion of the water-cooling dehumidification duct 14 in the substantially vertical state, the direction 2 changes so as to rise substantially vertically along the water-cooling dehumidification duct 14. When the cooling water 15 is made to flow down to the lower end edge of the wall surface inside the water cooling / dehumidifying duct 14 facing the direction changing portion, the cooling water 15 drips down from the lower end edge of the wall surface into the air passage. The water droplets are made to fly by being blown up by. The drainage guide convex portion 23 guides the cooling water 15 flowing down along the ridges 17 at the lower portion of the wall surface inside the water cooling / dehumidifying duct 14 to the shaded portions of the ventilation formed by the partition plates 24 at both ends, and the high-speed circulation is achieved. It is configured so that it is not exposed to the air 12 and does not drip.

A drain port 24a is formed in the partition plate 24,
The cooling water 15 collected in the shade is caused to flow into the outer tub 3 along the bottom wall surface of the suction port 3c.

By constructing the lower end portion of the water cooling / dehumidifying duct 14 as in this embodiment, it is possible to prevent the generation of water droplets that fly to the downstream and become an obstacle.

Next, an eighth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a vertical sectional side view of the water-cooled dehumidifier according to the eighth embodiment. The eighth embodiment is characterized in that a heat exchange plate is installed in the water cooling / dehumidifying duct along the air passage, and a ridge is provided on the surface of the heat exchange plate. Overlapping description of the configuration common to the above-described embodiment will be omitted.

The water-cooled dehumidifier 13 in this embodiment
In the water cooling / dehumidifying duct 14, a metal heat exchange plate 25 is vertically installed at a substantially middle position in the front / rear direction, and the water cooling / dehumidifying duct 14 is vertically divided into two parts. This heat exchange plate 25 is provided with a protrusion 17 similar to that of the above-described embodiment on the rear (right side in the figure) wall surface, and the lower end of the heat exchange plate 25 is a suction port provided on the side wall of the outer tub 3. The guide portion 25a is formed by curving toward 3c. This guide 25a
The ridge 17 is not provided in the. And the cooling water supply pipe 16
From the cooling water outlet 16a of the cooling water 1 to the rear wall surface.
It is configured so that 5 is poured out.

In the water-cooling type dehumidifier 13 as described above, the circulating air 12 flowing from the suction port 3c is smoothly divided into the front and rear passages by the lower end portion 25a of the heat exchange plate 25. Then, the circulating air 12 divided into the flow path on the rear side is, like the circulating air 12 in the above-described embodiment, the cooling water 15 flowing down along the ridges 17 and the heat exchange cooled by the cooling water 15. The plate 25 is touched to be cooled and dehumidified. Further, the circulating air 12 divided into the flow path on the front side is brought into contact with the heat exchange plate 25 cooled by the cooling water 15 to cool and dehumidify.

The cooling water 15 flowing down the wall surface on the rear side of the heat exchange plate 25 is constructed so as to flow down on both ends of the space on the rear side of the guide portion 25a, whereby water droplets flying to the downstream side are generated. Prevent.

Next, a ninth embodiment of the present invention will be described.
This will be described with reference to 10. FIG. 10 is an enlarged perspective view showing a part of the water-cooled dehumidifier according to the ninth embodiment. In the ninth embodiment, a heat exchange plate is installed along the air passage so as to divide the inside of the water cooling / dehumidifying duct into two parts, and a ridge and an opening are provided on the surface of the heat exchange plate, and a lower end is provided. It is characterized by a structure in which a space for smoothly dividing the flow is provided in the two divided channels. Overlapping description of the configuration common to the above-described embodiment will be omitted.

The water-cooled dehumidifier 13 in this embodiment
In the water cooling / dehumidifying duct 14, a metal heat exchange plate 25 is vertically installed at a substantially middle position in the front / rear direction, and the water cooling / dehumidifying duct 14 is vertically divided into two parts. This heat exchange plate 25 is provided with the protrusion 17 and the opening 26 similar to those in the above-described embodiment on the wall surface on the rear side (right side in the drawing), and the lower end portion of the heat exchange plate 25 has the above-described embodiment. Similarly to the above, a drainage guide convex portion 23 for preventing the flying of water drops is provided. The heat exchange plate 25 below the drainage guide convex portion 23 is removed, and the cooling water 15 is made to flow out from the cooling water outlet 16a of the cooling water supply pipe 16 onto the rear wall surface.

In such a water-cooled dehumidifier 13, the lower end of the water-cooled dehumidifier duct 14 is connected to the suction port 3c provided in the outer tank 3. Water cooling dehumidification duct 14 from the suction port 3c
The circulating air 12 flowing in the lower end of the water in the horizontal direction changes its direction so as to rise substantially vertically along the water cooling / dehumidifying duct 14 at the lower end of the water cooling / dehumidifying duct 14 in a substantially vertical state. A space 28 is provided for uniformly recovering the velocity distribution of the circulating air 12 flowing into the direction changing portion. By this space 28, the circulating air 12 is smoothly divided into the front and rear passages. Then, the circulating air 12 divided into the flow path on the rear side
Is the cooling water 15 flowing down along the ridges 17 and the cooling water 1 as in the circulating air 12 in the above-described embodiment.
The heat exchange plate 25 cooled by 5 is touched to cool and dehumidify. In addition, a part of the circulating air 12 along the ridges 17 passes through the opening 26 located at the lower part of the ridges 17,
The cooling of the lower surface of 7 is promoted. Further, the circulating air 12 divided into the flow path on the front side is brought into contact with the heat exchange plate 25 cooled by the cooling water 15 to cool and dehumidify.

The cooling water 15 flowing down the wall surface on the rear side of the heat exchange plate 25 flows down from both ends of the heat exchange plate 25 from the drain guide convex portion 23 and is guided to the ventilation shadow 27 formed by the suction port 3c. It flows into the outer tank 3 along the bottom wall surface of the suction port 3c without being exposed to the circulating air 12 having a high flow velocity. With this configuration, it is possible to prevent water droplets flying to the downstream side from being generated.

Next, the tenth embodiment of the present invention will be described.
This will be described with reference to FIG. FIG. 11 is a vertical sectional front view (a) showing an enlarged view of the water-cooled dehumidifier according to the tenth embodiment and a sectional view taken along the line AA. The nineteenth embodiment has a structure in which a heat exchange plate is installed along a wind path in a water cooling / dehumidifying duct, and a plurality of ridges extending in the vertical direction are arranged side by side on the surface of the heat exchange plate. There are features. Overlapping description of the configuration common to the above-described embodiment will be omitted.

The water-cooled dehumidifier 13 in this embodiment
Is a plurality of ridges 17 extending in a substantially vertical direction on the surface of the heat exchange plate 25 arranged side by side in a spaced manner, and a plurality of cooling water outlets of the cooling water supply pipe 16 are provided between the ridges 17. 16
The cooling water 15 is made to flow down from a.

In the tenth embodiment, the contact area between the cooling water 15 and the circulating air 12 can be increased by increasing the number of the protrusions 17 to improve the heat exchange performance.

Next, the eleventh embodiment of the present invention will be described.
This will be described with reference to FIG. FIG. 12 is a vertical sectional front view (a) showing an enlarged view of the water-cooled dehumidifier according to the eleventh embodiment and a sectional view taken along the line AA. The eleventh embodiment is characterized in that a heat exchange plate is installed in the water cooling / dehumidifying duct along the air passage, and cooling water is poured in a shower shape on the surface of the heat exchange plate. Overlapping description of the configuration common to the above-described embodiment will be omitted.

In the water-cooled dehumidifier 13 according to the eleventh embodiment, a plurality of ridges 17 extending in a direction substantially perpendicular to the surface of the heat exchange plate 25 are arranged side by side with a space therebetween. The cooling water 15 is made to flow in a shower shape (spreading in a fan shape) from one cooling water outlet 16a of the cooling water supply pipe 16 between the projections 17, and is made to flow between the projections 17 so as to flow down. .

Also in this embodiment, the contact area between the cooling water 15 and the circulating air 12 can be increased by increasing the number of the protrusions 17 to improve the heat exchange performance.

The protrusion 17 in each of the above-described embodiments
Can be replaced with a groove that forms a similar water channel. Further, it is possible to further provide the protrusions 17 or the recesses on both sides of the heat exchange plate 25 to further increase the contact area between the cooling water 15 and the circulating air 12. Further, by providing fine irregularities or a porous surface on the surface of the heat exchange plate 25, the wetting and spreading of the cooling water 15 is expanded, and the contact area with the circulating air 12 can be increased. The heat exchange plate 25 and the ridge 1
It is desirable that 7 is made of a metal having excellent thermal conductivity so that it does not become a heat resistance, but if there is a problem such as cost or rust, it can be changed to a material such as resin.

The direction of discharge of the cooling water 15 from the cooling water outlet 16a of the cooling water supply pipe 16 in each of the above-described embodiments is from the direction directly below the cooling water supply pipe 16 to the inner wall side of the water cooling / dehumidifying duct 14 or heat exchange. By discharging the water toward the plate 25 side, it is possible to further prevent the water droplets from being blown up by the circulating air 12 and flying.

Such a water-cooled dehumidifier (heat exchanger) can be used in clothes dryers, dishwashers and the like.

[0059]

According to the present invention, a cooling water supply pipe is provided on an upper portion of a substantially vertical wall surface facing an air passage, the cooling water is flowed out to the wall surface and is transmitted along the wall surface, and the cooling water flows down the wall surface. By providing the cooling water flow area expanding member provided in the area,
It is possible to widen the contact area of the air and the cooling water to improve the heat exchange (cooling and dehumidifying) efficiency and prevent water droplets from riding on the air and flying to the downstream side. In addition, the water-cooled heat exchanger (water-cooled dehumidifier) can be made compact by increasing the area where the cooling water flows down. Further, it is possible to reduce the ventilation resistance of the water-cooled heat exchanger (water-cooling dehumidifier) by reducing the member discharged to the ventilation passage. Further, since the water-cooled dehumidifier is formed integrally with the outer tub, useless space is eliminated and the washer / dryer can be made compact.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of a washer / dryer according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional front view (a) showing an enlarged view of a water-cooled dehumidifier (heat exchanger) of the washer / dryer shown in FIG.

FIG. 3 is a vertical sectional front view (a) showing an enlarged view of a water-cooled dehumidifier according to a second embodiment of the present invention and an AA sectional view (b) thereof.

FIG. 4 is a vertical sectional front view (a) showing an enlarged view of a water-cooled dehumidifier according to a third embodiment of the present invention and an AA sectional view (b) thereof.

FIG. 5 is a vertical sectional front view (a) and an AA cross-sectional view (b) showing an enlarged view of a water-cooled dehumidifier according to a fourth embodiment of the present invention.

FIG. 6 is an enlarged perspective view showing a part of a water-cooled dehumidifier according to a fifth embodiment of the present invention.

FIG. 7 is an enlarged perspective view showing a part of a water-cooled dehumidifier according to a sixth embodiment of the present invention.

FIG. 8 is an enlarged perspective view showing a part of a water-cooled dehumidifier according to a seventh embodiment of the present invention.

FIG. 9 is a vertical sectional side view of a water-cooled dehumidifier according to an eighth embodiment of the present invention.

FIG. 10 is an enlarged perspective view showing a part of a water-cooled dehumidifier according to a ninth embodiment of the present invention.

FIG. 11 is a vertical sectional front view (a) showing an enlarged view of a water-cooled dehumidifier according to a tenth embodiment of the present invention and an AA cross-sectional view (b) thereof.

FIG. 12 is a vertical sectional front view (a) showing an enlarged view of a water-cooled dehumidifier according to an eleventh embodiment of the present invention and an AA cross-sectional view (b) thereof.

[Explanation of symbols]

3 ... Outer tub, 5 ... Washing tub, 6 ... Stirring blade, 13 ... Water-cooling dehumidifier (heat exchanger), 14 ... Water-cooling dehumidifying duct, 15 ... Cooling water, 16 ... Cooling water supply pipe, 17 ... Ridge, 26 ... opening,
27 ... pubic area, 28 ... space.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobuo Fujieda             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Hideyuki Kimura             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Tsunetoshi Komatsu             1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture             Inside the ceremony company Hitachi Taga Electronics (72) Inventor Hideaki Munegata             1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture             Inside the ceremony company Hitachi Taga Electronics (72) Inventor Kenichi Ogoshi             1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture             Inside the ceremony company Hitachi Taga Electronics (72) Inventor, Toshiyasu Kamano             1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture             Inside the ceremony company Hitachi Taga Electronics F term (reference) 3B155 AA16 BA29 BB18 CB07 CB53                       CB55 CB57 DA03 MA01 MA02

Claims (9)

[Claims] 1. Vertical washing for drying laundry in a washing tub located inside an outer tub by circulating air in a washing tub for washing and dehydrating laundry to a water-cooling dehumidifier for cooling and dehumidifying. In the dryer, the air passage for circulating the air of the water-cooled dehumidifier is configured integrally with the outer tub of the washer / dryer. 2. A washing / drying machine for drying laundry in a washing tub by circulating air in a washing tub for washing and dehydrating laundry to a water-cooling dehumidifier for cooling and dehumidifying, the water-cooling dehumidifier. Is provided in the cooling water supply pipe on the upper surface of the substantially vertical wall surface facing the air passage through which air circulates, for supplying the cooling water to the wall surface and for flowing down the wall surface, and in the cooling water flow-down region of the wall surface. A washer / dryer comprising a member for enlarging a cooling water flow area. 3. A washing / drying machine for drying laundry in a washing tub by circulating air in a washing tub for washing and dehydrating laundry to a water-cooling dehumidifier to cool and dehumidify the water-cooling dehumidifier. Is a cooling water supply pipe that causes cooling water to flow out to the upper surface of a substantially vertical wall surface that faces an air passage for circulating air, and that allows the cooling water to flow down along the wall surface, and the cooling water that is substantially vertical to the wall surface. A washer / dryer characterized by comprising a member for flowing a distance longer than the distance. 4. A water-cooled heat exchanger for cooling air by directly contacting cooling water with air flowing through a ventilation passage, wherein the ventilation passage is provided on an upper surface of a substantially vertical wall surface facing the air passage. A water-cooling heat exchanger, comprising: a cooling water supply pipe for letting out water and flowing down along the wall surface; and a cooling water flow area expanding member provided in a cooling water flow area of the wall surface. 5. The water-cooled heat exchanger according to claim 4, wherein the cooling water flow-down area expanding member is constituted by a plurality of stages of ridges provided on the wall surface. . 6. The water-cooled heat exchanger according to claim 5, wherein the ridges are arranged in a zigzag pattern. 7. The water-cooled heat exchanger according to claim 4, wherein the member for enlarging the cooling water flow area is a fine member such as punching metal, expander mesh or gauze, or a member provided with a large number of small holes. A water-cooled heat exchanger characterized in that 8. The water-cooled heat exchanger according to claim 4, wherein the cooling water flow-down area enlarging member has a plurality of ridges arranged so as to extend in the vertical direction on the wall surface and arranged side by side. Is a water-cooled heat exchanger. 9. A washing / drying machine for drying laundry in a washing tub by circulating air in a washing tub for washing and dehydrating laundry to a water-cooling dehumidifier to cool and dehumidify the water-cooling dehumidifier. The washing / drying machine is characterized in that the cooling water is introduced into a velocity region slower than the main flow velocity of air in the air introduction part of the water-cooling dehumidifier.