JPH0779902B2 - Drum washer dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention is directed to the rotation of a rotary drum disposed in a trough.
The present invention relates to a drum-type washer / dryer in which clothes are washed, dehydrated, and then dried with hot air while stirring the clothes.

(Prior Art) A conventional drum-type washer / dryer is provided with a horizontal shaft-type rotary drum rotatably provided in a tub so that clothes can be washed and dehydrated by rotating the rotary drum during a washing operation. Further, a fan casing communicating with the side surface of the trough is provided, and a fan device is disposed there. By this fan device, hot air is circulated in the trough during the drying operation, and the hot air and the outside air are heat-exchanged with each other. The moisture contained in is removed.

(Problems to be solved by the invention) However, the above-described conventional configuration is only provided with a felt seal on the outer periphery of the fan device to partition the inside of the fan casing to block hot air from the outside air. When washing water flows into the fan casing due to abnormal rise of water level or abnormal foaming of detergent during washing, the washing water overflows from the fan casing through the passage of outside air. I was afraid. Therefore, in order to prevent the washing water from overflowing from the tub into the fan casing, the position of the communication hole between the tub and the fan casing should be set as high as possible, or the communication port should be semi-circular with the lower half part closed. However, the former configuration has a drawback that the outer shape of the tub is large and the whole is large, and the latter configuration has a small area of the communication port, resulting in poor ventilation efficiency and poor drying efficiency. There was a downside.

Therefore, an object of the present invention is to provide a drum type washer / dryer capable of reliably preventing the washing water in the tub from overflowing to the outside at the time of an abnormality, and being compact and capable of efficient drying.

[Means for Solving the Problems] (Means for Solving the Problem) The present invention provides a tub having an overflow port and capable of storing water, and the tub is rotated about a horizontal axis in the tub and the rotation causes rotation of the garment inside. Is equipped with a rotating drum for washing and dehydrating during washing operation and stirring during drying operation, a fan casing is provided on the side surface of the trough so as to communicate with the inside of the trough, and the drying operation is performed on one surface of the heat exchanger. A second blade having a first blade for supplying hot air into the rotary drum and a second surface for introducing outside air into the other surface of the heat exchanger during the drying operation.
A fan device also having a blade for heat exchange is provided in the fan casing, and an air intake duct and an exhaust duct are connected to the fan casing so as to suck and exhaust outside air to and from the second blade. The position of each opening of the intake duct and the exhaust duct is provided above the position of the overflow port.

(Operation) According to the above-mentioned means, even if the water level in the trough abnormally rises and flows into the fan casing, it can be surely prevented from overflowing to the outside. Also, the tub can be made smaller,
It is possible to improve the drying efficiency by increasing the communication area between the trough and the fan casing.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 is an outer box of the drum type washer / dryer, and a trough 2 is supported inside the outer box via an elastic support mechanism 3. Reference numeral 4 denotes a rotary drum arranged in the trough 2, and a rotary shaft 5 horizontally fixed to the center of a right side plate 4a shown in the figure has bearings 7 and 7 mounted on a bearing body 6 fixed to the right side plate 2a of the trough 2. It is rotatably supported via.
8 is a drum driving motor fixed to the outer bottom of the trough 2,
A belt 11 is stretched between a pulley 9 fitted to the rotary shaft 8a and a pulley 10 fitted to the rotary shaft 5 fixed to the rotary drum 4. On the other hand, a short cylindrical fan casing 12 is fixed to the outside of the left side plate 2b of the trough 2 in a watertight state by, for example, welding. Reference numeral 13 denotes a fan device arranged in the fan casing 12, which has first and second blades 17 and 18 on both left and right sides of a heat exchange element 16 which divides the fan casing 12 into two left and right chambers 14 and 15. is doing. The right end of the rotary shaft 19 fixed to the center of the fan device 13 is rotatably supported by a bearing body 20 fixed to the center of the left side plate 2b of the trough 2 via bearings 21 and 21. The left side plate 2b of the trough 2 is provided with a large number of vent holes 22 around the bearing body 20 for communicating the inside of the trough 2 with the inside of one chamber 14 of the fan casing 12. An opening 23 corresponding to the vent hole 22 is provided at the center of the left side plate 4b of the drum 4, and a lint filter 24 is provided therein. On the other hand, the left end of the rotary shaft 19 penetrates the fan casing 12 via the seal member 25,
The pulley 26 is fitted therein. Reference numeral 27 denotes a fan driving motor fixed to the outer bottom of the trough 2, and a belt 29 is stretched between a pulley 28 fitted to a rotation shaft 27a of the fan and the pulley 26. On the other hand, 30 is a circulation duct arranged in the upper part of the tub 2, one end of which is connected to the right chamber 14 and the other end is connected to a hot air supply port 31 formed in the upper part of the tub 2. A heater 32 is arranged in the circulation duct 30 near the warm air supply port 31. Further, 33 is an intake duct provided in the fan casing 12 so as to communicate with the center of the left chamber 15, and 34 is an exhaust duct provided in the fan casing 12 so as to communicate with the outer peripheral side of the chamber 15.

Reference numeral 35 is a drainage valve provided at the bottom of the trough 2 and has a valve hole 35a.
A valve element 36 is horizontally movable in the valve body 36, and a drain hose 37 is connected to the outflow side of the valve element 36. 38 is a drain hose whose one end is connected to the bottom of the fan casing 12, and the other end of which is connected to the inflow side of the drain valve 35 via a check valve 39.

Reference numeral 40 denotes an overflow port provided on the side surface of the tub 2, which is set at a position slightly above the normal washing water level, and is connected to the outflow side of the drain valve 35 by an overflow hose (not shown). The lowermost positions of the vent holes 22 are set slightly above the overflow port 40. Further, the positions of the openings 33a and 34a of the intake duct 33 and the exhaust duct 34 are both set above the overflow port 40.

Reference numeral 41 is a felt seal provided on the outer periphery of the heat exchange element 16 of the fan device 13, and the tip of this is a fan casing 12
Is in contact with the inner circumference of the.

Next, the operation of the above configuration will be described. When clothes and detergent are put into the rotating drum 4 from the clothes entrance (not shown) in the upper part of the outer box 1 and water is supplied into the trough 2 and the washing operation is started, the motor 8 is started and its rotation is started. The force is decelerated via the belt 11 and transmitted to the rotary drum 4. As a result, the rotary drum 4 is rotated, the clothes inside are stirred up and down, and the stirring action causes the clothes to be washed with detergent. After completion of the detergent washing process, drain and re-water, and rotate the rotating drum 4 only to rinse clothes as described above. After the completion of the rinsing process, the water is drained, the motor 8 is rotated at high speed, and the rotary drum 4 is rotated at high speed to dehydrate the clothes. After this dehydration is completed, the process proceeds to the drying process. In this drying process,
The motor 8 is rotated at a low speed and the motor 27 is rotated. As a result, the rotary drum 4 is rotated and the fan device 13 is also rotated via the belt 29. In this drying process, the heater 32 is also energized, and the fan device 13 is
Due to the rotation of the first blade 17 of the fan, the air in the rotary drum 4 is sucked into the chamber 14 on the right side of the fan casing 12 through the opening 23 and the ventilation hole 22 as indicated by an arrow A in FIG. It is discharged from the hot air supply port 31 into the tub 2 while being heated by the heat of the heater 32. The hot air flows into the rotary drum 4 as indicated by an arrow B in FIG. 1 to dry the clothes. The moist air that draws moisture from clothes
In the chamber 14 on the right side of the fan casing 12, heat is exchanged with the outside air sucked into the chamber 15 on the left side through the intake duct 33 through the heat exchanging body 16 to be dehumidified. The air in the dehumidified chamber 14 is
It is again subjected to hot weathering through the circulation duct 30 and used for drying. In this way, while circulating the hot air, the clothes are efficiently dried by turning the clothes upside down by the rotation of the rotary drum 4.

Thus, for example, when an abnormal rise in the water level occurs beyond the overflow port 40 during washing, the wash water may flow into the fan casing 12 from the ventilation hole 22. Since the openings 33a and 34a of the intake duct 33 and the exhaust duct 34 are both set to be watertight and above the overflow port 40, the water flowing into the fan casing 12 is exposed to the outside. It is surely prevented from flowing out. Also in this way the fan casing
The water that has flowed into the inside 12 is drained to the outside from the water distribution hose 37 via the check valve 39 and the water distribution valve 35 when the valve body 36 of the drain valve 35 opens, and the fan casing 12 during the dry operation in which the fan device 13 rotates. No water remains inside.

As described above, in the above-described embodiment, since the openings 33a and 34a of the intake duct 33 and the exhaust duct 34 that communicate with the fan casing 12 are both set above the overflow port 40,
Even if the water level in the trough 2 rises abnormally and wash water flows into the fan casing 12, the water is surely prevented from overflowing. For this reason, it is not necessary to make the outer shape of the trough 2 large, and therefore the size can be reduced. Further, since it is not necessary to raise the position of the vent hole 22 and it can be set at a position aligned with the center of the first blade 17, the efficiency of air blowing of the first blade 17 is improved, and therefore, the hot air is rotated by the rotating drum. Since it can be efficiently supplied to the inside of 4, the drying efficiency is also improved.

[Effects of the Invention] As is apparent from the above description, the present invention provides a trough having an overflow port and capable of storing water, and rotates within this trough about a horizontal axis to rotate the clothes inside. A rotary drum for washing and dehydrating during a washing operation and stirring during a drying operation is provided, and a fan casing is provided on a side surface of the trough so as to communicate with the trough, and one surface of the heat exchanger is inside the fan casing. Has a first blade for supplying hot air into the rotary drum during the drying operation, and has a second blade for taking in outside air during the drying operation on the other surface of the heat exchanger. A fan device for heat exchange
An intake duct and an exhaust duct are provided so as to communicate with the fan casing so as to suck and exhaust the outside air to and from the second blade, and the positions of the openings of the intake duct and the exhaust duct are set to be greater than the position of the overflow port. Since it is characterized by being provided above, even if the water level in the trough rises abnormally and flows into the fan casing, it can be reliably prevented from overflowing to the outside. In addition, it is possible to reduce the size of the tub, and to increase the communication area between the tub and the fan casing to improve the drying efficiency.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is an overall vertical sectional front view, and FIG. 2 is an enlarged vertical sectional view of a main part. In the drawing, 2 is a trough, 4 is a rotary drum, 8 is a motor, 12 is a fan casing, 13 is a fan device, 16 is a heat exchanger, 17 is a first blade, 18 is a second blade, and 22 is a vent hole. , 27 is a motor, 33 is an intake duct, 34 is an exhaust duct, 30 is a circulation duct, 32 is a heater, and 40 is an overflow port.

Claims (1)

[Claims] 1. A tub having an overflow port and capable of storing water, and a tub provided in the tub so as to be rotatable about a horizontal shaft. A rotating drum that stirs during the drying operation, a fan casing that is provided on the side surface of the tub so as to communicate with the tub, and a rotatably provided inside the fan casing that has one side of the heat exchanger. Heat having a first blade for supplying hot air into the rotary drum during operation and a second blade for taking in outside air during the drying operation on the other surface of the heat exchanger. The fan device also serves as a replacement, and an intake duct and an exhaust duct provided in communication with the fan casing so as to suck and exhaust the outside air to and from the second blade, the intake duct and the exhaust duct. of Drum type washing and drying machine, characterized in that the position of the opening is provided above the position of the overflow port.