JP3924922B2 - Drum type washer / dryer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drum-type washing and drying machine that sequentially controls each process such as washing, rinsing, dehydration, and drying in a drum that is rotatably arranged in a substantially horizontal direction.
[0002]
[Prior art]
Conventionally, this type of drum type washing and drying machine is configured as shown in FIGS. Hereinafter, the configuration will be described.
[0003]
As shown in the figure, the drum 1 is provided with a large number of water passage holes 2 on the entire outer periphery thereof, and is rotatably disposed in the water tank 3. One end of a rotating shaft 4 provided in a substantially horizontal direction is fixed to the center of rotation of the drum 1, and a drum pulley 5 is fixed to the other end of the rotating shaft 4. The motor 6 is connected to the drum pulley 5 by a belt 7 and rotationally drives the drum 1. A lid 8 is provided at the opening of the drum 1 so as to be freely opened and closed.
[0004]
The water tank 3 is suspended from the washing machine main body 9 by a spring body 10, supported by a vibration damping damper 11, and provided with a balancer 12 for reducing vibration during dehydration. The heater 13 heats the washing water in the water tank 3.
[0005]
The heat exchanger 14 communicates with the water tank 3 through the exhaust hose 15, and a blower fan 16 that communicates with the heat exchanger 14 is provided, communicates with the blower fan 16, opens into the water tank 3, and warm air A heater 17 is provided. The temperature detection means 18 is composed of a thermistor and is provided in the heat exchanger 14 to detect dryness, and the temperature fuse 19 prevents the warm air heater 17 from overheating.
[0006]
The washing water supply valve 20 supplies water into the water tank 3 in the washing or plowing process, and the soft finishing agent water supply valve 21 supplies the soft finishing agent into the water tank 3. The drying water supply valve 22 supplies cooling water into the heat exchanger 4 in the drying process. The drainage pump 23 drains the water in the water tank 3.
[0007]
The control device 24 controls operations of the motor 6, the heater 13, the blower fan 16, the warm air heater 17, the washing water supply valve 20, the soft finish water supply valve 21, the drying water supply valve 22, the drainage pump 23, and the like. Each process such as washing, rinsing, dehydration, and drying is sequentially controlled.
[0008]
The operation in the above configuration will be described. When the lid 8 is opened, the laundry is put into the drum 1 and the operation is started, the drum 1 is rotated at a low speed by the motor 6 in the washing process, and the laundry in the drum 1 is driven. Is lifted and dropped onto the water surface. Thus, the washing process proceeds. After the washing process, the drain pump 23 is driven to drain the washing water in the water tank 3, and the rinsing process is started.
[0009]
In the rinsing process, a combination of rinsing and intermediate dehydration is performed a plurality of times in order to perform the same operation as the washing process. In the intermediate dewatering, the drum 1 is rotationally driven at a high speed, and the laundry is dewatered by centrifugation. At this time, if the laundry in the drum 1 is shifted, that is, an imbalance occurs, the rotating drum 1 and the water tank 3 vibrate, but the vibration damping damper 11 attenuates the vibration to prevent excessive vibration of the water tank 3. Yes.
[0010]
Also in the dehydration process after the rinsing process, the drum 1 is rotationally driven at a high speed and the laundry is centrifugally dehydrated, similar to the intermediate dehydration. At this time, if the laundry in the drum 1 is shifted, that is, an imbalance occurs, the drum 1 and the water tank 3 vibrate, but the vibration damping damper 11 attenuates the vibration to prevent excessive vibration of the water tank 3. .
[0011]
Thereafter, in the drying process, the blower fan 16 and the hot air heater 17 are driven, and the hot air circulates through a series of paths passing through the water tank 3 and the heat exchanger 14. Further, the drying water supply valve 22 is operated to supply water into the heat exchanger 14, contact with hot air damp in the heat exchanger 14, and heat exchange to perform dehumidification.
[0012]
[Problems to be solved by the invention]
In such a conventional configuration, the lint and fibers that have fallen off the clothes during the drying process are washed away by the cooling water in the heat exchanger 14, but a remarkably large amount of lint is generated. In the case of clothing or clothing with extremely severe fiber dropout, it accumulates at the bottom of the exhaust hose 15 and heat exchanger 14 to obstruct the flow of the circulating air and cause the warm air heater 17 to overheat. As a result, there is a possibility that the thermal fuse 19 for preventing overheating will operate.
[0013]
The present invention solves the above-mentioned conventional problems, so that lint that adheres to the exhaust hose, the lower part of the heat exchanger, etc. in the drying process is washed away in the rinsing process so as not to inhibit the flow of circulating air in the drying process. The first purpose is to make it.
[0014]
In addition, by washing a large amount of cooling water through the exhaust hose, the lower part of the heat exchanger, etc., during the drying process, wash away the accumulated waste, so that the flow of the circulating air is not hindered. Is the second purpose.
[0015]
[Means for Solving the Problems]
In order to achieve the first object of the present invention, a drum that rotates in a substantially horizontal direction is enclosed in a water tank and driven by a motor, and air heated by a heating means is blown into the drum by a blowing means and exhausted. Heat is exchanged with a heat exchanger connected to the water tank by a hose and dehumidified. The operation of the motor, the air blowing means, the heating means, etc. is controlled by the control means to sequentially control each process such as washing, rinsing, dehydration, and drying, and at least once in the plurality of rinsing processes. There was water until the water level substantially submerged, the rotational direction of the drum starts driving of the blower means when the direction of scoop water in the exhaust hose, in which the drum is configured to stop driving of the blowing means during reverse rotation.
[0016]
Thus, exhaust hoses in the drying step, can be washed away with stroke rinsed lint or the like attached like the bottom of the heat exchanger, it is possible not to inhibit the flow of circulating air in the drying cycle.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, a drum that rotates in a substantially horizontal direction, a water tank that encloses the drum, a motor that drives the drum, and a blowing means that blows air into the drum are blown. Heating means for heating air, a heat exchanger for exchanging heat and dehumidifying the air blown by the blowing means, an exhaust hose connecting the lower part of the heat exchanger and the water tank, the motor, blowing means, heating And control means for sequentially controlling each process such as washing, rinsing, dehydration, and drying by controlling the operation of the means, and the control means includes at least one of the exhaust hoses in a plurality of rinsing processes. as well as water supply until the water level substantially submerged, the driving of the blowing means is started at the direction the rotation direction of the drum scoop out the water in the exhaust hose, to stop driving of the blower means and said drum during reverse rotation Is obtained by adapted, in accordance with the left and right rotation of the drum, rising water level in the exhaust hose, with repeated descent, the direction of rotation of the drum starts to drive the blower means when the direction of scoop water in the exhaust hose The air passage is secured, a large amount of air is blown, and water splashes into the heat exchanger, causing the exhaust hose and lint attached to the lower part of the heat exchanger during the drying process to be washed away in the rinsing process. In addition, when the drum rotates in the reverse direction, the water level in the exhaust hose rises, the air passage becomes narrower and the amount of air that is blown decreases, so the water level also reaches the heat exchanger due to the suction pressure of the blower fan. In this state, by stopping the blower fan drive, the suction pressure of the blower fan disappears and the water and waste thread etc. in the heat exchanger flow out into the water tank at once. Because it can be so as not to inhibit the flow of circulating air in the drying cycle.
[0018]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.
[0019]
Example 1
As shown in FIGS. 1 and 2, the control device 25 includes a motor 6, a heater 13, a blower fan (blower unit) 16, a warm air heater (heating unit) 17, a washing water supply valve 20, and a soft finish water supply valve. 21, the operation of the drying water supply valve 22, the drainage pump 23, etc. is controlled, and each process such as washing, rinsing, dehydration, and drying is sequentially controlled, and is configured as shown in FIG. 3.
[0020]
The control means 26 is constituted by a microcomputer, and via a power switching means 27 constituted by a bidirectional thyristor or the like, the motor 6, the heater 13, the blower fan 16, the hot air heater 17, the washing water supply valve 20, the flexible finish. The operations of the agent water supply valve 21, the drying water supply valve 22, the drainage pump 23, and the like are controlled, and the steps of washing, rinsing, dehydration, and drying are sequentially controlled.
[0021]
The input setting means 28 is used for inputting a setting course necessary for the user, the start of operation, and the like, and is input to the control means 26. The display unit 29 displays the setting contents, operation state, and the like set by the input setting unit 28. The water level detection means 30 detects the water level in the water tank 3, and the water temperature detection means 31 detects the water temperature in the water tank 3 and inputs it to the control means 26.
[0022]
The temperature detection means 18 is composed of a thermistor and is provided in the heat exchanger 14 to detect drying, and is input to the control means 26. The thermal fuse 19 prevents the hot air heater 17 from overheating, and is connected to the hot air heater 17 in series. Although not shown in FIG. 3, when the thermal fuse 19 is operated, the fact that the hot air heater 17 is cut off is input to the control means 26 to stop the operation. In addition, 32 is a power switch and 33 is a commercial power source.
[0023]
The control means 26 supplies water to the water level at which the opening of the exhaust hose 15 is substantially submerged at least once in a plurality of rinsing strokes, and operates the plurality of blower fans 16 in conjunction with the rotational drive time limit of the drum 1. It is configured to be driven once. Other configurations are the same as those of the conventional example.
[0024]
The operation in the above configuration will be described. When the blower fan 16 and the hot air heater 17 are driven in the drying process and the hot air is circulated through a series of paths passing through the water tank 3 and the heat exchanger 14, a remarkably large amount of lint is generated. When drying clothes or clothes with extremely severe fiber dropout, the lint and fibers that fall off the clothes during the drying process may accumulate at the bottom of the exhaust hose 15 or the heat exchanger 14. .
[0025]
For this reason, the control means 26 supplies water to the water level at which the opening of the exhaust hose 15 is substantially submerged at least once in a plurality of rinse strokes. In this state, the water level in the exhaust hose 15 repeatedly rises and falls as the drum 1 rotates left and right. At this time, if the blower fan 16 is driven in conjunction with the rotational drive time limit of the drum 1, the water level fluctuation in the exhaust hose 15 is further increased by the blower pressure of the blower fan 16, and the water into the heat exchanger 14 is blown. This will cause severe scattering.
[0026]
Thereby, the lint and the like adhering to the lower part of the exhaust hose 15 and the heat exchanger 14 during the drying process can be washed out very effectively. Further, by performing the driving of the blower fan 16 a plurality of times, it is possible to more effectively wash out lint and the like.
[0027]
(Example 2)
The control means 26 shown in FIG. 3 supplies water to the water level at which the exhaust hose 15 is substantially submerged at least once in a plurality of rinsing strokes, and the direction in which the rotation direction of the drum 1 pumps out the water in the exhaust hose 1. The driving of the blower fan 16 is sometimes started, and the drive of the blower fan 16 is stopped when the drum 1 rotates in the reverse direction. Other configurations are the same as those of the first embodiment.
[0028]
The operation of the above configuration will be described. As shown in FIG. 4, when the rotation direction (arrow) of the drum 1 is a direction for pumping out water in the exhaust hose 1, the exhaust hose is at the water level A when the drum 1 is stopped. When driving of the blower fan 16 is started in the direction of pumping out the water in the water 15, the water level in the exhaust hose 15 is lowered to the water level B, so that a ventilation path is secured and a large amount of air is blown. Accordingly, water is splattered into the heat exchanger 14, and the waste yarns and the like accumulated on the lower portion of the exhaust hose 15 and the heat exchanger 14 can be effectively washed away during the drying process.
[0029]
Next, as shown in FIG. 5, when the drum 1 rotates in the reverse direction, the water level in the exhaust hose 15 rises, the air passage becomes narrower and the amount of air blown decreases, so the water level is reduced by the suction pressure of the blower fan 16. Will also rise into the heat exchanger 14. When the driving of the blower fan 16 is stopped in this state, the suction pressure of the blower fan 16 is lost, and the water and waste thread in the heat exchanger 14 flow out into the water tank 3 at a stretch, which makes the yarn more effective. Waste etc. can be washed away.
[0030]
(Example 3)
The control means 26 shown in FIG. 3 drives the drying water supply valve (water supply means) 22 in the drying process, and supplies a first predetermined amount (for example, 0.5 L / min) of cooling water to the heat exchanger 14. In addition, the cooling water is supplied at a second predetermined amount (for example, 5 L / min) larger than the first predetermined amount at a predetermined time. Other configurations are the same as those of the first embodiment.
[0031]
In the first embodiment, the control unit 26 supplies water to the water level at which the opening of the exhaust hose 15 is substantially submerged at least once in a plurality of rinsing strokes, and interlocks with the rotational drive time limit of the drum 1. The blower fan 16 is configured to be driven a plurality of times. However, in this embodiment, this configuration may be omitted.
[0032]
The operation in the above configuration will be described. In the drying process, the first predetermined amount of cooling water supplied to the heat exchanger 14 dehumidifies hot air circulating through a series of paths passing through the water tank 3 and the heat exchanger 14. Therefore, when the amount of cooling water necessary for this purpose is excessive and the generation of a large amount of lint or the like is dried, the clothing cannot be allowed to flow during the drying process and accumulates. Therefore, by flowing a second predetermined amount of cooling water larger than the first predetermined amount at a predetermined time in the drying process, the yarn gradually accumulates below the exhaust hose 15 and the heat exchanger 14 in the drying process. Debris can flow quickly and accumulation can be eliminated.
[0033]
By flowing a second predetermined amount (5 L / min) of cooling water larger than the first predetermined amount (0.5 L / min) at a predetermined time interval of the drying process at a predetermined time interval, for example, every 15 minutes. However, the lint and the like that gradually accumulate in the lower portions of the exhaust hose 15 and the heat exchanger 14 during the drying process can be periodically and quickly flowed.
[0034]
Example 4
The control means 26 shown in FIG. 3 drives the drying water supply valve (water supply means) 22 at a first operation rate to supply a first predetermined amount (for example, 0.5 L / min) of cooling water during the drying process. While being supplied to the heat exchanger 14, the drying water supply valve 22 is driven at a second operating rate larger than the first operating rate at a predetermined time, and a second predetermined amount larger than the first predetermined amount (for example, 5L / min)) to supply cooling water. Other configurations are the same as those of the third embodiment.
[0035]
The operation in the above configuration will be described. In the drying process, the first predetermined amount of cooling water supplied to the heat exchanger 14 dehumidifies hot air circulating through a series of paths passing through the water tank 3 and the heat exchanger 14. This is achieved by driving the drying water supply valve 22 at a first operating rate of 1 second on and 9 seconds off. At this time, when a large amount of clothes with excessive generation of lint or the like is dried, these cannot be flown during the drying process and are accumulated.
[0036]
Therefore, by driving the drying water supply valve 22 at a second operation rate of 10 seconds on and 1 second off at a predetermined time of the drying process, a second amount larger than the first predetermined amount (0.5 L / min) is obtained. A predetermined amount (5 L / min) of cooling water can be flowed, and lint or the like that gradually accumulates in the lower portion of the exhaust hose 15 and the heat exchanger 14 can be quickly flowed during the drying process.
[0037]
Thereby, the lint etc. which accumulate on the lower part of the exhaust hose 15 and the heat exchanger 14 in the drying process can be effectively washed away by one drying water supply valve 2.
[0038]
(Example 5)
As shown in FIG. 6, the first drying water supply valve (first water supply means) 22 a supplies a first predetermined amount (for example, 0.5 L / min) of cooling water to the heat exchanger 14. The second drying water supply valve (second water supply means) 22 b supplies a second predetermined amount (for example, 5 L / min) of cooling water to the heat exchanger 14.
[0039]
The control means 34 drives the first drying water supply valve 22a in the drying process to supply the first predetermined amount of cooling water to the heat exchanger 14, and at the predetermined time, turns on the second drying water supply valve 22b. The cooling water is supplied by a second predetermined amount by driving. Other configurations are the same as those of the third embodiment.
[0040]
The operation in the above configuration will be described. A first predetermined amount of cooling water supplied to the heat exchanger 14 by the first drying water supply valve 22a in the drying process is a series that passes through the water tank 3 and the heat exchanger 14. This is the amount of cooling water required to dehumidify the hot air circulating in the path of the product, and when clothing that generates a large amount of lint etc. is dried, it cannot flow during the drying process and accumulates. Come.
[0041]
Therefore, by driving the second drying water supply valve 22b at a predetermined time and supplying cooling water in a second predetermined amount, it gradually accumulates under the exhaust hose 15 and the heat exchanger 14 in the drying process. It is possible to quickly squeeze waste thread.
[0042]
Thereby, the lint etc. which accumulate on the lower part of exhaust hose 15 and heat exchanger 14 in a drying process can be washed away more certainly.
[0043]
【The invention's effect】
As described above, according to the first aspect of the present invention, the drum that rotates in a substantially horizontal direction, the water tank that contains the drum, the motor that drives the drum, and the air that blows into the drum. Means, heating means for heating the blown air, heat exchanger for exchanging heat and dehumidifying the air blown by the blowing means, an exhaust hose connecting the lower part of the heat exchanger and the water tank, Control means for controlling operations of a motor, a blower means, a heating means, etc., and sequentially controlling each process such as washing, rinsing, dehydration, and drying, and the control means is at least once in a plurality of rinsing processes. , together with the exhaust hose to the water supply until the water level substantially submerged, the driving of the blowing means is started at the direction the rotation direction of the drum scoop out the water in the exhaust hose, the blower the drum during reverse rotation Since it configured to stop driving of the stage, according to the right and left rotation of the drum, rising water level in the exhaust hose, with repeated lowering, driving of the blower means when the direction of the rotational direction of the drum scoop out the water in the exhaust hose The air passage is secured and a large amount of air is blown, and the scattering of water into the heat exchanger occurs violently , and the lint attached to the exhaust hose and the lower part of the heat exchanger is removed during the drying process. It can be washed away in the rinsing process, and when the drum rotates in the reverse direction, the water level in the exhaust hose rises, the air passage becomes narrower and the amount of air blown down. In this state, by stopping driving the blower fan, the suction pressure of the blower fan disappears and the water and waste thread in the heat exchanger flow into the water tank all at once. Since it is possible to, it is possible not to inhibit the flow of circulating air in the drying cycle.
[ Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view of a drum type laundry dryer according to a first embodiment of the present invention. FIG. 2 is a sectional view of the drum type laundry dryer. FIG. 3 is a block diagram of the drum type laundry dryer. Circuit diagram [Fig. 4] Cross-sectional view of the main part of one operation state of the drum type washing and drying machine of the second embodiment of the present invention [Fig. 5] Cross-sectional view of the main part of another operation state of the drum type washing and drying machine [ FIG. 6 is a block circuit diagram of a fifth drum type washer / dryer of the present invention. FIG. 7 is a partially cutaway perspective view of a conventional drum type washer / dryer. Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drum 3 Water tank 6 Motor 14 Heat exchanger 15 Exhaust hose 16 Blower fan (blower means)
17 Hot air heater (heating means)
26 Control means

Claims (1)

A drum that rotates in a substantially horizontal direction, a water tank that encloses the drum, a motor that drives the drum, a blowing unit that blows air into the drum, a heating unit that heats the blown air, and the blowing unit A heat exchanger for exchanging heat to dehumidify the blown air, an exhaust hose connected to the lower part of the heat exchanger and the water tank and guiding the air discharged from the water tank to the heat exchanger , the motor, and a blowing means Control means for controlling the operation of the heating means and the like, and sequentially controlling each process such as washing, rinsing, dehydration, and drying, and the control means at least once in a plurality of rinsing processes. with the hose to the water supply until the water level substantially submerged, the driving of the blowing means is started at the direction the rotation direction of the drum scoop out the water in the exhaust hose, driving of the blower means and said drum during reverse rotation Configured to stop the drum type washing and drying machine.

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