JP2008006123A - Washing and drying machine - Google Patents

Abstract

A washing and drying machine that reduces the amount of cooling water used during drying is provided. Furthermore, the present invention provides a washing dryer that improves drying efficiency and reduces power consumption by reducing the amount of heat that escapes from an air passage and an outer tub that is blown by a heating means or a blower.
SOLUTION: An outer tub 3 containing a washing / dehydrating tub 5, a blower 18 for sending air to the washing / dehydrating tub 5, an air passage 14 for blowing air by the blower, a heat source 20 for heating air in the air passage, and washing A dehumidifying mechanism 13 having a heat exchanging part for cooling and dehumidifying hot and humid air discharged from the article, an outer frame 1 surrounding the outer tub 3 and the dehumidifying mechanism 13, and an outer frame 1 provided in and out of the laundry In the washing / drying machine provided with the lid 2, the cooling water used in the dehumidifying mechanism 13 is cooled and then used again for water-cooled dehumidification.
[Selection] Figure 1

Description

  The present invention relates to a washing and drying machine that includes a drying device having a heat exchanger and performs washing, dehydration and drying.

  A washing / drying machine that performs washing, dehydration and drying is provided with a discharge port at the bottom of the outer tub, for example, as described in Patent Document 1, and a circulation wind tunnel is provided upstream of the discharge port and the blowing means. Communicate. A part of the dry air discharged from the washing and dewatering tank is configured to circulate through the discharge port, the circulation wind tunnel, the air blowing means, the heating means, the blowing portion, and the washing and dewatering tank. The circulating wind tunnel is provided with a cooling water supply port for supplying cooling water for dehumidifying the drying air. The drying air that has become wet due to contact with the laundry comes into contact with the cooling water and the wall surface of the circulating wind tunnel cooled by the cooling water, and is dehumidified. A lid is provided at the upper part of the casing, and a drain valve and a drain port are provided at the lower part of the outer tub.

Japanese Patent Laying-Open No. 2005-245810 (page 11, FIG. 1)

  From the viewpoint of saving water, it is necessary to reduce the amount of cooling water used during drying.

  In the configuration of the prior art, the cooling water used for dehumidifying the drying air is discarded as it is from the drain outlet. For this reason, much water was used also at the time of drying. Moreover, in order to reduce the power consumption at the time of drying from the point of energy saving, it is necessary to improve drying efficiency. In order to improve the drying efficiency, it is conceivable to improve the evaporation performance and dehumidification performance of water from the laundry and to efficiently use the heat from the heating means.

  In the configuration of the prior art, since the heating means and the surroundings are not heat insulating structures, a large amount of heat escapes from the heating means having the highest temperature, and 30-40% of the heat input by the heating means is in the outside air. Estimated to escape.

  An object of the present invention is to provide a laundry dryer that reduces the amount of cooling water used during drying. Another object of the present invention is to provide a washing and drying machine that further improves drying efficiency and reduces power consumption by reducing the amount of heat that escapes from an air passage and an outer tub that is blown by a heating means or a blower. It is in.

  In order to achieve the above object, the washing and drying machine of the present invention has the following configuration.

  The outer tub containing the washing / dehydrating tub, the blower that sends air into the washing / dehydrating tub, the air passage that blows air with the blower, the heat source that heats the air in the air passage, and the hot and humid air discharged from the laundry Cooling used in the dehumidifying mechanism in a dehumidifying mechanism having a heat exchange section for cooling and dehumidifying, an outer frame surrounding the outer tub and the dehumidifying mechanism, and an outer lid provided on the outer frame for taking in and out laundry. It is characterized by being used for water-cooled dehumidification after cooling the water.

  Moreover, it is good to cool the used cooling water using a heat exchanger.

  In addition, a cooling panel or a water storage tank, or a cooling panel and a water storage tank are used as the heat exchanger.

  The cooling panel may be provided inside the outer frame or inside the outer lid, or inside the outer frame and inside the outer lid.

  Moreover, it is good to provide the cooling pipe built in the zigzag shape in the cooling panel, and to provide in the state which contacted the inner surface of the outer frame or the inner surface of the outer cover.

  ADVANTAGE OF THE INVENTION According to this invention, the usage-amount of cooling water can be reduced, without reducing the dehumidification performance at the time of drying.

  Furthermore, it is possible to provide a washing and drying machine that improves drying efficiency and reduces power consumption by reducing the amount of heat that escapes from the air passage and the outer tub that is blown by a heating means or a blower.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic diagram showing the configuration of the washing / drying machine according to the first embodiment of the present invention. This washing and drying machine hangs the outer tub 3 with the upper end opening 3a openable and closable with the inner lid 4 in an anti-vibration state in the outer frame 1 covered with the outer cover 2 so as to be openable and closable. It is supported (not shown). In the outer tub 3, a washing / dehydrating tub 5 into which the laundry is placed is rotatably supported, and a stirring blade 6 for stirring the laundry is rotatably supported at the bottom of the washing / dehydrating tub 5. The washing and dewatering tub 5 has a large number of small holes (not shown) for centrifugal dewatering and ventilation on the side wall. The electric drive device 7 attached to the outside of the bottom wall of the outer tub 3 rotates the washing / dehydrating tub 5 and the stirring blade 6. Further, the drainage port 3 b opened in the bottom wall of the outer tub 3 is connected to the drainage hose 9 through the drainage electromagnetic valve 8. The drying device 10 for drying the laundry in the washing and dewatering tub 5 sucks out the air in the outer tub 3 from the drain port 3b of the outer tub 3 and dehumidifies it with water, then heats it and then blows it from the blowing nozzle 11 The laundry is dried by generating circulating air 12 by blowing into the dewatering tank 5.

  In the washing and drying machine configured as described above, in the washing process, the laundry is put into the washing and dewatering tub 5, the water is supplied with the drain electromagnetic valve 8 closed, and the washing water is stored in the outer tub 3 and stirred. The wing 6 is rotated to wash the laundry. In the dehydration process, the drain electromagnetic valve 8 is opened to drain the washing water in the outer tub 3, and the washing and dehydration tub 5 is rotated to perform centrifugal dehydration. In the drying process, the washing and dewatering tub 5 and / or the stirring blade 6 are rotated with the drain electromagnetic valve 8 closed, and the blower 18 is operated to suck out the air in the outer tub 3 from the drain outlet 3b. After passing through the water-cooled dehumidifying duct 14 and water-cooled and dehumidified, it is heated by the heater 19 to generate circulating air 12 that is blown from the blowing nozzle 11 toward the laundry in the washing and dewatering tub 5. The water-cooled dehumidification of the circulating air 12 deprived of moisture from the laundry in the washing and dewatering tub 5 is performed by the metal heat exchange plate 27 installed at the approximate center in the water-cooled dehumidifying duct 14 from the cooling water supply pipe 16. The cooling water 15 that has flowed out to the wall surface is transmitted along the wall surface and guided in a zigzag state (not shown) in the horizontal direction by the ridges 17 so as to spread and flow down over a wide range of the wall surface, and contact with the circulating air 12. This is realized.

  The cooling water 15 that has flowed out to the wall surface of the heat exchange plate 27 is warmed by dehumidifying the circulating air 12 and flows to the lower part of the water-cooled dehumidifying duct 14. Then, the cooling water 15 warmed by opening the electromagnetic valve 22 is guided to a water storage tank 24 installed under the outer tub 3 through a hose 23. A filter 25 is installed inside the water storage tank 24 to remove lint, dust, etc. of clothes contained in the cooling water 15. The cooling water 15a stored in the water storage tank 24 is cooled by being sucked up by the pump 26 and passing through the cooling pipe 29 which is incorporated in a zigzag shape as shown in FIG. It is led to the water supply pipe 16 and flows out again to the wall surface of the heat exchange plate 27 to dehumidify the circulating air 12. The heat transmitted to the cooling panel 28 is transmitted to the outer frame 1 with which the cooling panel 28 is in contact and is released to the outside air.

  Since the washing / drying machine configured as described above cools the cooling water 15a once used, it can maintain substantially the same dehumidifying performance even if it is used again for water-cooled dehumidification. For this reason, the amount of cooling water used can be significantly reduced without deteriorating the drying performance.

  In addition, as the amount of laundry increases and the drying time becomes longer, the water-saving effect becomes larger as compared with the conventional method of draining by using the cooling water only once.

  In addition, as the cooling water 15a stored in the water storage tank 24, the waste water used for the final rinsing in the washing process can be used, and further water saving can be achieved.

  Furthermore, since the cooling panel 28 installed inside the outer frame 1 acts as a heat insulating material, a part of the heat generated from the heater 19 is transmitted from the surface of the outer tub 3 to the air, and then from the outer frame 1 to the outside air. By reducing escape, evaporation from the laundry is promoted, drying efficiency is improved, and power consumption can be reduced.

  Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic view showing the cooling panel 28 of the washing / drying machine as in FIG. 2 of the first embodiment. The difference from the first embodiment is that the cooling pipe 29 is assembled in a zigzag shape in accordance with the front surface and the left and right side surfaces of the outer frame 1, and the length of the cooling pipe 29 and the heat radiation area of the cooling panel 28 are increased by about three times. That is.

  As in the first embodiment, the washing / drying machine configured as described above can further maintain the substantially equivalent dehumidifying performance even when used again for water-cooled dehumidification because the cooling water 15a once used is further cooled. For this reason, the amount of cooling water used can be further greatly reduced without deteriorating the drying performance.

  Furthermore, since the cooling panel 28 installed inside the outer frame 1 acts as a heat insulating material, a part of the heat generated from the heater 19 is transmitted from the surface of the outer tub 3 to the air, and then from the outer frame 1 to the outside air. By further reducing the escape, the evaporation from the laundry is promoted, the drying efficiency is further improved, and the power consumption can be further reduced.

  In the first embodiment and the second embodiment, the cooling pipe 29 is in contact with the inner surface of the outer frame 1 by forming a cooling water layer between the inner surface of the outer frame 1 and the washing / dehydrating tub 5. It is good to provide. Thereby, the cooling effect of a cooling water and the heat insulation effect with respect to the heat | fever which escapes outside from the inner side of the outer frame 1 can be heightened. Even if the cooling panel 28 is provided not only on the inner surface of the outer frame 1, but also on the inner surface of the outer lid 2, the cooling effect of cooling water and the heat insulation effect against heat escaping from the inner side of the outer frame 1 to the outer side Can be increased. However, in order to provide the outer lid 2 that opens and closes with respect to the outer frame 1, it is possible to bend and extend at least between the pipe (or the cooling pipe 29) on the outer frame 1 side and the cooling pipe 29 on the outer lid 2 side. In addition, it is necessary to use a pipe made of a material that does not easily deteriorate even after repeated bending and stretching. Further, since the outer lid 2 becomes heavy, a large force is required for the opening / closing operation. For this reason, the cooling panel 28 is preferably provided on the inner surface of the outer frame 1 rather than the outer lid 2.

The schematic diagram which shows the structure of the washing-drying machine in the 1st Embodiment of this invention. The schematic diagram which shows the structure of the cooling panel in the 1st Embodiment of this invention. The schematic diagram which shows the structure of the cooling panel in the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Outer frame, 1a ... Clothes input port, 2 ... Outer lid, 3 ... Outer tub, 3b ... Drainage port, 5 ... Washing and dewatering tub, 6 ... Stirring blade, 7 ... Electric drive device, 8 ... Drainage solenoid valve, DESCRIPTION OF SYMBOLS 9 ... Drain hose, 10 ... Drying device, 11 ... Blowing nozzle, 12 ... Circulating air, 13 ... Water-cooled dehumidifier, 14 ... Water-cooled dehumidification duct,
DESCRIPTION OF SYMBOLS 15 ... Cooling water, 16 ... Cooling water supply pipe, 17 ... Projection, 18 ... Blower, 19 ... Heater, 20 ... Heater case, 21 ... Bellows, 22 ... Solenoid valve, 23 ... Hose, 24 ... Water storage tank, 25 ... Filter, 26 ... pump, 27 ... heat exchange plate, 28 ... cooling panel, 29 ... cooling pipe, 30 ... switching valve.

Claims (5)

A washing and dewatering tub, an outer tub containing the washing and dewatering tub, an actuator for applying mechanical force to the laundry in the washing and dewatering tub, a blower for sending air into the washing and dewatering tub A dehumidifying mechanism comprising a wind path for blowing air, a heat source for heating air in the air path, and a heat exchange unit for cooling and dehumidifying the hot and humid air discharged from the laundry with cooling water, the outer tub, and the dehumidification In a washer / dryer comprising an outer frame surrounding the mechanism and an outer lid provided on the outer frame for taking in and out the laundry,
The washing / drying machine, wherein the cooling water used in the dehumidifying mechanism is cooled and then used again for the water-cooled dehumidification.   The washing / drying machine according to claim 1, wherein the used cooling water is cooled using a heat exchanger.   The washing / drying machine according to claim 2, wherein a cooling panel or a water storage tank, or a cooling panel and a water storage tank are used as the heat exchanger.   The washing / drying machine according to claim 1, wherein a cooling panel is used as the heat exchanger, and the cooling panel is arranged inside the outer frame or the outer lid, or inside the outer frame and the inner side of the outer lid. A washer-dryer characterized by being prepared for. The washing / drying machine according to claim 4, wherein the cooling panel includes a cooling pipe incorporated in a zigzag shape, and is provided in contact with the inner surface of the outer frame or the inner surface of the outer lid. Washing and drying machine.

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