JP2004008279A - Washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent cooling water for cooling and dehumidifying wet air from flying on a downstream side in the form of water droplets together with circulating air, and enhance cooling and dehumidifying (heat exchange) efficiency to realize a small-sized washing and drying machine equipped with such a water cooling dehumidifier (water cooling heat exchanger). <P>SOLUTION: A cleaning nozzle is arranged at an air duct between a suction port, to which an external tank and the circulating air duct are connected, and a blowing port, and accordingly the lint stuck to the upper part of the rising air duct and the surface of a cooling and sprinkling part, and a cooling water supply pipe is washed away. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a washing and drying machine.
[0002]
[Prior art]
As described in Japanese Patent Application Laid-Open No. H11-347282, a washing / drying machine that performs washing, dehydration, and drying is a water-cooled dehumidifier (water-cooled heat exchanger) that cools and dehumidifies wet air sucked from a washing tub by a blower. ) And a heater for heating the dehumidified air and blowing it into the washing tub. The water-cooled dehumidifier supplies cooling water into a dehumidifying duct that dehumidifies the moist air sucked out of the washing tub, and splashes water droplets of the cooling water by the flow of the circulating air flowing through the dehumidifying duct to form air and cooling water. It is configured to increase the efficiency of cooling and dehumidification (heat exchange) by contact with the substrate.
[0003]
[Problems to be solved by the invention]
However, in the washer / dryer, since a heater for heating air is present downstream of the water-cooled dehumidifier, water droplets generated in the dehumidifier are prevented from riding on the circulating air and flying to the position of the heater. It is necessary. In addition, the water droplets flying on the circulating air are vaporized and wet the circulating air, thereby lowering the dehumidifying efficiency.
[0004]
In order to prevent water droplets generated in the dehumidifier from stopping inside the dehumidifier, if a room for dropping water droplets is provided at the outlet portion of the dehumidifier, the dehumidifier becomes large, and if a water droplet shielding rib is provided. There is a problem that the ventilation resistance increases, the ventilation amount decreases, and the heat exchange efficiency decreases. Furthermore, by providing a room for dropping water droplets and a water drop shielding rib, fibrous dust adheres to the upper portion and convex portion of the bent portion of the flow path, and the accumulated and grown fibrous dust increases ventilation resistance and reduces the amount of ventilation. There is a problem that the heat exchange efficiency decreases due to the decrease.
[0005]
A dehumidifier configured to reduce the generation of water droplets is also an effective means of reducing the flying of water droplets.However, even with a water-cooled dehumidifier configured in this way, fibrous dust attached to the ventilation path accumulates. When grown, the grown fibrous dust deposits contain a large amount of cooling water and promote generation of water droplets.
[0006]
An object of the present invention is to prevent cooling water that cools and dehumidifies humid air from becoming water droplets and flying downstream along with circulating air, and to enhance cooling and dehumidifying (heat exchange) efficiency. .
[0007]
Another object of the present invention is to make the water-cooled dehumidifier (water-cooled heat exchanger) as described above compact.
[0008]
Another object of the present invention is to realize a water-cooled dehumidifier (water-cooled heat exchanger) as described above with a small ventilation resistance.
[0009]
Another object of the present invention is to realize a small-sized washing / drying machine provided with such a water-cooled dehumidifier (water-cooled heat exchanger).
[0010]
[Means for Solving the Problems]
The present invention provides cooling and dehumidification in the circulation air passage that is attached to the outer tub, and arranges the air passage of the circulation air passage so as to face the opening of the washing and dewatering tub. Fibrous dust adheres and accumulates on the wall surface of the circulating air path in the washing and drying machine configured to blow warm air heated with circulating air into the washing and dewatering tub, and this generates water droplets including cooling water. It is intended to suppress the growth of fibrous dust deposits such as promoting or increasing ventilation resistance, specifically,
A washing nozzle is installed in an air path between a suction port where the outer tank and the circulation air path are connected to the blow port, or a suction port in which the outer tank and the circulation air path are connected. A washing nozzle is installed in an air passage between the mouth and the lint filter.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a schematic diagram illustrating a configuration of a washing / drying machine according to the first embodiment of the present invention. FIG. 2 is a partially enlarged cross-sectional view of a water-cooled dehumidifier (heat exchanger) of the washing and drying machine according to the first embodiment.
[0013]
The washing and drying machine in this embodiment supports a bottomed cylindrical outer tub 2 inside a square cylindrical outer frame 1 so as to be suspended by a vibration-proof mechanism (not shown). Is provided with a bottomed cylindrical washing and dewatering tub 3 having a number of dewatering holes 3a formed in the side wall and a stirring blade 4, and the stirring blade 4 is repeatedly rotated by a rotary driving device 5 installed below the outer tub 2. Invert and reverse. The dewatering hole 3a is provided in a lower region of the side wall of the washing and dewatering tub 3, and an intermediate region and an upper region are omitted in order to prevent a blow-through of circulating air described later and to efficiently dry the laundry 21. Or less. The stirring blade 4 is provided with a ventilation hole 4a. The bottom of the outer tub 2 is connected to a drain pipe 7 via a drain solenoid valve 6.
[0014]
The upper opening 1a of the outer frame 1 is opened and closed by an outer lid 8 attached to the outer frame 1 by a hinge 8a, and the upper opening 2a of the outer tank 2 is opened and closed by an inner lid 9 attached to the outer tank 2 by a hinge 9a.
[0015]
In the washing and drying machine, the outer lid 8 and the inner lid 9 are opened, the laundry 21 is put into the washing and dewatering tub 3, the inner lid 9 and the outer lid 8 are closed, and the water supply electromagnetic wave is supplied to the outer tub 2. The water is supplied by the valve 20, the rotation drive device 5 is operated, and the agitating blades 4 are repeatedly rotated forward and backward to agitate and wash the laundry 21. The drainage electromagnetic valve 6 is opened for drainage, and the washing and dewatering tub is opened. 3 is dehydrated by rotating at high speed.
[0016]
A circulating air passage that circulates dry air in the outer tub 2 to generate circulating air includes a suction port 2b provided at a lower portion of a side wall of the outer tub 2 and a suction port 2b connected to the suction port 2b and extending upward from the suction port 2b. And a circulating air which is installed at a position higher than the water level of the outer tub 2 in the washing process and rises up the ascending air passage 10. Folded portion (member) 11 for folding back, a descending air passage portion (member) 12 extending from the upper folded portion 11 toward the lower side of the outer tub 2, and disposed in a space below the outer tub 2. A circulating fan 13 that draws in circulating air from the descending air passage 12, a blow-out air passage (member) 14 that extends from the discharge port of the circulation fan 13 toward the upper opening of the outer tub 2, Circulating air connected to the top Blowing opening blowing the washing and dewatering tank 3 from the upper opening 2a of the outer tub 2 comprises a (member) 15. The rising air path section 10 in the circulation air path functions to stop the washing water in the outer tub 2 from entering the circulation fan 13 in the washing process. Further, the circulating fan 13 and a connection portion of the air path member to the circulating fan 13 constitute a lower folded portion in the circulating air path.
The circulation air passage includes a cooling water sprinkling section 16 in the upper part of the rising air path part 10, a washing nozzle 23 in the upper part of the cooling water sprinkling part 16, a lint filter 17 in the upper turn-back part 11, and a blowing port. A heater (PTC heater) 18 is provided in the section 15.
[0017]
These circulating air path members are located on the rear side of the outer tub 2 and mounted on the side walls of the outer tub 2 for mounting.
[0018]
These circulating air path members open the electromagnetic drain valve 6 after washing to drain the washing water in the outer tub 2, rotate the washing and dewatering tub 3 at a high speed, and then spin at a low speed (50 to 400 r / min). min), the circulating fan 13 is operated to suck the air in the outer tub 2 and the washing and dewatering tub 3 from the outlet 2b, and in the process of ascending the ascending air passage section 10, the cooling water sprinkling section 16 The cooling water supplied into the ascending air passage section 10 cools and dehumidifies it, and the lint filter 17 in the upper turn-up section 11 collects lint.
[0019]
Water-cooling and dehumidification of the circulating air 22 that deprives the laundry 21 of moisture in the washing tub 3 and wets and passes through the ascending air passage 10 is supplied from the cooling water spraying electromagnetic valve 16 e and the cooling water outlet of the cooling water spraying unit 16. The cooling water 25 flowing out from the walls 16a, 16b, 16c to the wall of the rising air passage 10 is transmitted along the wall and guided in a zigzag state by three rows of ridges 27 to spread over a wide area of the wall and flow down. By causing the cooling water 25 to flow down the wall surface of the rising air passage 10 when the circulating air 22 passes through the inside of the rising air passage 10, the cooling water 25 flows downward. It is realized by touching in a large area.
[0020]
Since the circulating air 22 includes the lint of the laundry 21 and rises in the rising air passage 10, if there is a large protrusion in the rising air passage 10, there is a possibility that the lint will adhere to and accumulate on the protrusion. is there. In particular, lint accumulates on the cooling water sprinkling part 16 on the wall surface where the cooling water 25 flows down, and when the cooling water outlets 16a, 16b, 16c are covered, the cooling water 25 flowing out of the cooling water outlets 16a, 16b, 16c is sucked up by the lint. This causes the air to fly downstream along with the circulating air 22, thereby lowering the heat exchange (cooling and dehumidifying) efficiency. When lint accumulates and grows on the cooling water sprinkling section 16 and the cooling water supply pipe 16d, the ventilation resistance increases and the ventilation amount decreases. If the inside of the updraft passage 10 is made sufficiently large so that the ventilation resistance does not increase even if lint is accumulated, the dehumidifier becomes large. Therefore, as shown in FIG. 2, a cleaning nozzle 23 is provided above the cooling water sprinkling section 16 and the cleaning water 24 is sprayed onto the cooling water sprinkling section 16 and the cooling water supply pipe 16d to wash out the lint adhering to the surface. This prevents lint from accumulating on the cooling water supply pipe 16 and the cooling water supply pipe 16d, thereby preventing a decrease in heat exchange (cooling and dehumidifying) efficiency, an increase in the size of the dehumidifier, and an increase in ventilation resistance.
[0021]
In the present embodiment, the supply of the washing water 24 to the washing nozzle 23 is branched from the pipe after the water supply solenoid valve 20 when the washing tub 3 is supplied with water. An electromagnetic valve for water may be separately provided to wash during drying or at the end of drying.
[0022]
The cooling water 25 supplied into the rising air passage 10 cools the inner wall and the circulating air 22 while flowing down the inner wall along the inner wall in the rising air passage 10, and And then drains through the electromagnetic drain valve 6. Thereafter, the cooled and dehumidified air is sucked into the circulation fan 13 through the descending air passage 12, blows out from the circulation fan 13, is sent to the air inlet 15 through the air passage 14, is heated by the heater 18, and is heated by the heater 18. The laundry 21 is dried by being cooled and dehumidified in the ascending air passage portion 10 while being circulated by blowing in a direction opposite to the rotation direction of the washing and dewatering tub 3 toward the inner wall surface inside.
[0023]
The washing / drying machine configured as described above can wash away the lint attached to the surface of the cooling water sprinkling section 16 or the cooling water supply pipe 16d above the rising air passage section 10 by the washing nozzle 23. Lint is prevented from being deposited on the cooling water supply pipe 16d, thereby preventing a decrease in heat exchange (cooling and dehumidifying) efficiency, an increase in ventilation resistance, and an increase in the size of the dehumidifier. Therefore, the size of the washing / drying machine can be reduced.
[0024]
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a partially enlarged cross-sectional view of a water-cooled dehumidifier (heat exchanger) of the washing / drying machine according to the second embodiment. The second embodiment is characterized in that the position of the cleaning nozzle of the first embodiment is provided in front of the lint filter. For the configuration common to the first embodiment, a duplicate description will be omitted.
[0025]
In the water-cooled dehumidifier according to the second embodiment, the washing nozzle 23 is provided in front of the lint filter 17, and the upper surface of the upper folded portion 11 in the rising air passage 10 and the cooling sprinkler 16 and the cooling water supply pipe The lint attached to the surface of the 16d can be washed at the same time.
[0026]
The washing / drying machine configured as described above has the same operation and effect as those of the above-described embodiment, and also effectively removes the lint adhered to the upper surface of the upper folded portion 11 in the rising air passage 10 by the washing nozzle 23. Therefore, the effect of preventing an increase in ventilation resistance due to lint accumulation becomes more remarkable.
[0027]
Such a water-cooled dehumidifier (heat exchanger) can be used for a clothes dryer, a dishwasher, a garbage processor, and the like.
[0028]
【The invention's effect】
According to the present invention, the lint attached to the upper part of the rising air path, the cooling water sprinkling part, and the cooling water supply pipe is washed out by the washing nozzle, and the lint attached to the surface of the cooling water sprinkling part and the cooling water supply pipe is washed away. It is possible to prevent the accumulation of water droplets and prevent water droplets from flying downstream, thereby preventing a reduction in heat exchange (cooling and dehumidifying) efficiency, an increase in the size of the dehumidifier, and an increase in ventilation resistance.
[Brief description of the drawings]
FIG. 1 is a schematic diagram illustrating a configuration of a washing / drying machine according to a first embodiment of the present invention.
FIG. 2 is a partially enlarged sectional view of a water-cooled dehumidifier (heat exchanger) of the washing and drying machine shown in FIG.
FIG. 3 is a partially enlarged sectional view of a water-cooled dehumidifier according to a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer frame, 1a ... Upper opening, 2 ... Outer tub, 2a ... Upper opening, 2b ... Suction opening, 3 ... Washing and dewatering tank, 3a ... Dewatering hole, 4 ... Stirring blade, 5 ... Rotation drive device, 6 ... Drainage solenoid valve, 10 ... Upwind path (member), 11 ... Top folded part (member), 12 ... Downflow path (member), 13 ... Circulation fan, 14 ... Blowout airpath (member), 15 ... Blow-out part (member), 16 ... Cooling water sprinkling part, 17 ... Less waste filter, 18 ... Heating heater, 23 ... Washing nozzle, 25 ... Cooling water, 27 ... Protrusion.

Claims (5)

Cooling and dehumidification is performed in the circulation air passage that is attached to the outer tub and disposed therein, and the circulating air is blown in front of the blowing air outlet by installing the blowing opening of the circulation air passage facing the opening of the washing and dewatering tub. In a washing and drying machine configured to blow heated warm air into the washing and dewatering tub,
A washing / drying machine, wherein a washing nozzle is provided in an air path between a suction port where the outer tub and the circulation air path are connected to the blowing port. Cooling and dehumidification is performed in the circulation air passage that is attached to the outer tub and disposed therein, and the circulating air is blown in front of the blowing air outlet by installing the blowing opening of the circulation air passage facing the opening of the washing and dewatering tub. In a washing and drying machine configured to blow heated warm air into the washing and dewatering tub, and a lint filter is provided in the middle of the circulation air passage,
A washing / drying machine having a washing nozzle installed in an air passage between a suction port connected to the outer tub and the circulation air passage and the lint filter. The washing and drying machine according to claim 1, wherein the supply of water to the washing nozzle is branched from a water supply pipe. In claim 1,
A washing / drying machine, wherein water is supplied to the washing nozzle when supplying water to the washing and dewatering tub. A circulating air passage that extends back and forth in the vertical direction between the rear side and the rear frame plate of the outer tub is attached to the outer tub and cooled and dehumidified in the circulating air passage. In the washing / drying machine configured to blow hot air heated to the circulating air in front of the blowing port into the washing and dewatering tub by being installed facing the upper opening, the outer tub and the circulating air path are connected. A washing / drying machine comprising a washing nozzle provided in an air passage between the suction port and the blow port.

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