JPH10272278A - Drum type washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the reduction of the life of a fan heater by drying water drops stuck to the surface of the fan heater due to humidity during washing at a drum-type washing and drying machine for washing or washing/drying wash within a rotary drum arranged in the state of being freely rotatable with a nearly horizontally provided rotary shaft in a center. SOLUTION: The rotary drum 1 housing wash and provided with the rotary shaft nearly in a horizontal direction is driven by a first motor 15 and a second motor, a circulating route 25 with a blowing fan 20 is provided with a heat exchange 23 directly heat-exchanging warm air including moisture within the drum 1 and provided with the fan heater 21. A control means controls a washing process and a drying process and energizes the heater 21 for a prescribed time during the washing process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type in which laundry is washed, dried, or continuously washed and dried in a rotating drum disposed rotatably about a rotating shaft provided in a substantially horizontal direction. It relates to a washer / dryer.

[0002]

2. Description of the Related Art Conventionally, this type of drum type washing and drying machine has been configured as shown in FIG. Hereinafter, the configuration will be described.

[0003] As shown in the figure, a rotary drum 1 is provided with a large number of water passage holes 2 on the entire outer peripheral portion and is rotatably disposed in an outer tank 3. One end of a rotating shaft 4 provided in a substantially horizontal direction at the center of rotation of the rotating drum 1 is fixed, and a drum pulley 5 is fixed to the other end of the rotating shaft 4. The motor 6 is connected to the driven pulley 5 by a belt 7 and drives the rotary drum 1 to rotate. A cover 8 is provided at the opening of the rotating drum 1 so as to be openable and closable. The hot air supply means (not shown) supplies hot air to the rotating drum 1. The hot air supply means generally includes a hot air heater and a rotating fan.

The outer tub 3 is provided with a spring body 1 from a washing / drying machine body 9.
At the same time, the balancer 12 is suspended by a vibration damper 11 so as to prevent vibrations during dehydration from being transmitted to the main body 9 of the washing and drying machine, and has a balancer 12 for reducing vibrations during dehydration. The hot water heater 13 heats washing water in the outer tub 3, that is, in the rotating drum 1. Control device 14
Controls the operation of the motor 6, the hot water heater 13, the hot air supply means, etc., and has a "standard course", a "speedy" course having different washing times, rinsing times and dehydration times by an input setting means (not shown), A washing process such as a “blanket” course and a “wool” course and a drying process can be set, and the set courses are sequentially controlled.

The operation of the above configuration will be described.
, The laundry is put into the rotating drum 1, the washing process is set, and the operation is started. When the water is supplied, the rotating drum 1 is driven to rotate at a low speed by the motor 6, and the laundry in the rotating drum 1 is lifted. It is dropped on the water and washed.
At this time, the hot water heater 13 is energized to heat the washing water in the outer tub 3 to improve the washing rate. In the case of rinsing, the same operation as in the case of washing is performed. In the dehydration after rinsing, the rotating drum 1 is driven to rotate at a high speed, and the laundry is centrifugally dehydrated.

When the drying process is set and the operation is started, the rotating drum 1 is driven to rotate at a low speed by the motor 6, and hot air is supplied to the rotating drum 1 from a hot air supply means (not shown) to wash the laundry. dry.

[0007] When the operation is started by setting the continuation of the washing step and the drying step, the laundry put into the rotary drum 1 is washed, rinsed and dehydrated, and enters the drying step to supply hot air. The hot air is supplied to the rotating drum 1 to dry it.

[0008]

In such a conventional configuration, when the user routinely selects only the course of the washing process and continues the operation, the hot air heater of the hot air supply means is energized. The warm air heater is always in the humidity of the washing process. A sheath heater is generally used as the hot air heater. The sheathed heater is a known one, and the nichrome wire and the outer tube are electrically insulated. When this sheathed heater is placed in high humidity, water droplets easily adhere to the surface of the outer tube, and there is a problem that the life is shortened due to rust or corrosion.

Further, a sheathed heater is used for the hot water heater 13 similarly to the hot air heater. The hot water heater 13 has a problem that its life is shortened due to rust or corrosion since water droplets are always attached at the end of the washing process.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its first object to prevent water from adhering to the surface of a warm air heater by drying due to humidity during washing, thereby preventing the life of the warm air heater from being shortened. .

It is a second object of the present invention to dry water droplets adhering to the surface of the hot water heater during washing, thereby preventing the life of the hot water heater from being shortened.

[0012]

SUMMARY OF THE INVENTION In order to achieve the first object, the present invention is directed to a circulation path having a blowing means, in which a rotating drum for storing laundry and having a rotating shaft in a substantially horizontal direction is driven by a motor. And a heat exchanger for directly exchanging the hot air containing moisture in the rotating drum with water, and a hot air heater. The control means controls the washing step and the drying step, and energizes the warm air heater for a predetermined time during the washing step.

[0013] This makes it possible to dry the water droplets attached to the surface of the warm air heater due to the humidity during the washing, thereby preventing the life of the warm air heater from being shortened.

In order to achieve the second object, a rotating drum which stores laundry and has a rotating shaft in a substantially horizontal direction is driven by a motor, and washing water in the rotating drum is heated by a hot water heater. The control means controls the washing step and the drying step, and energizes the hot water heater for a predetermined time at the end of the washing step.

[0015] This makes it possible to dry the water droplets attached to the surface of the hot water heater during washing, thereby preventing the life of the hot water heater from being shortened.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a rotating drum for storing laundry and having a rotating shaft in a substantially horizontal direction, a motor for driving the rotating drum, and a circulation unit having a blowing means. A heat exchanger provided in a path for directly exchanging heat of hot air containing moisture in the rotary drum with water, a hot air heater provided in the circulation path, and control means for controlling a washing step and a drying step. The control means is configured to energize the hot air heater for a predetermined time during a washing process,
Water droplets can be prevented from adhering to the surface of the warm air heater due to humidity during washing, and the life of the warm air heater can be extended.

According to a second aspect of the present invention, in the first aspect of the present invention, the hot air heater comprises a plurality of heaters, and the control means changes the time to the plurality of heaters during the washing process. The power is supplied one by one for a predetermined time, the current supplied to the hot air heater can be reduced, and the electric energy can be prevented from instantaneously increasing.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the control means is configured to energize the hot air heater when the motor is not energized. Thus, the motor and the hot air heater are not energized at the same time, and the electric energy can be prevented from instantaneously increasing.

The invention described in claim 4 is the above-mentioned claim 1-
In the invention described in 3, the control means is configured to supply power to the warm air heater in the latter half of the washing process, and after drying the water droplets attached to the surface of the warm air heater by supplying power to the warm air heater, Water droplets can be prevented from adhering again.

[0020] The invention described in claim 5 provides the above-mentioned claims 1 to
In the invention described in Item 4, the control means is configured not to energize the hot air heater in the washing process when the washing process and the drying process are set to be performed continuously. Since the water heater is energized and the water droplets adhering to the surface of the warm air heater dries, power is not wasted by not energizing during the washing process.

According to a sixth aspect of the present invention, there is provided a rotating drum for storing laundry and having a rotating shaft in a substantially horizontal direction, a motor for driving the rotating drum, and a hot water heater for heating washing water in the rotating drum. Control means for controlling the washing step and the drying step, wherein the control means is configured to energize the hot water heater for a predetermined time at the end of the washing step, and adheres to the surface of the hot water heater during washing. The dried water droplets can be dried, and the life of the hot water heater can be extended.

According to a seventh aspect of the present invention, in the sixth aspect of the invention, the control means is configured to energize the hot water heater when the motor is not energized, The motor and the hot water heater are not energized at the same time, so that the electric energy can be prevented from instantaneously increasing.

According to an eighth aspect of the present invention, in the above-described sixth or seventh aspect, when the control means is set to perform the washing step and the drying step continuously, the control means may supply the hot water at the end of the washing step. The heater is not energized.While hot air is supplied into the rotating drum during the drying process, water droplets adhering to the surface of the hot water heater can be dried. By not energizing the heater, it is possible to prevent power from being wasted.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

(Embodiment 1) As shown in FIGS. 1 and 2, a first motor (motor) 15 rotates the rotating drum 1 at a rotation speed N1 (for example, 53 rpm) to perform washing or rinsing. The second motor (motor) 16 rotates the rotating drum 1 at a rotation speed N2 (for example, 1).
000 rpm) to spin off. The first motor 15 and the second motor 16 are constituted by induction motors, and are connected to driven pulleys 19 via belts 17 and 18, respectively.

The driven pulley 19 has two kinds of reduction ratios. The first motor 15 is connected via a belt 17 to a driven pulley 19a having a large reduction ratio.
6 through the belt 18 to the driven pulley 1 having a small reduction ratio
9b, and is fixed to the other end of the rotating shaft 4 having one end fixed to the rotation center of the rotating drum 1.

The blower fan 20 constitutes a hot air supply means together with the hot air heater 21, and is driven by a fan motor 22. The heat exchanger 23 has one end connected to the rotating drum 1 and the other end connected to the rotating drum 1 through the blowing fan 20 and the blowing duct 24 to form a circulation path 25. The air is circulated to exchange heat and dehumidify.

The control device 26 includes a first motor 15, a second motor 15,
The motor 16 is controlled as shown in FIG. The control means 27 is composed of a microcomputer, and includes a hot water heater 13, a first motor 15, a second motor 16, a hot air heater 21, a fan motor, via a power switching means 28 composed of a bidirectional thyristor or the like. 23, a water supply valve 29, a drain pump 30 and the like are controlled to sequentially control a series of washing steps of washing, rinsing, and dehydrating, and control a drying step after the washing step.

The hot air heater 21 comprises a first heater 21a and a second heater 21b. Hot water heater 13
Is for heating the washing water in the outer tub 3, that is, in the rotary drum 1, the water supply valve 29 supplies water in the outer tub 3, and the drainage pump 30 drains the washing water in the outer tub 3.

The input setting means 31 is used by the user to input a necessary setting course, operation start, and the like. The user operates the "washing and drying processes", "operates the washing process", and "operates the drying process". "Is set to the control means 27. The display means 32 displays the contents set by the input setting means 31, the operation state, and the like. The rotation speed detecting means 33 detects the rotation speed of the rotating drum 1 by detecting the rotation speed of the first motor 15, and inputs the rotation speed to the control means 27. Storage means 34
Stores data necessary for a series of controls. In addition, 35 is a commercial power supply, and 36 is a power switch.

When the first motor 15 and the second motor 16 are not energized in the latter half of the washing process, for example, the warm air heater 21 is supplied to the hot air heater 21 for a predetermined time (for example, 10 seconds) at the time of final rinse water supply. ) I try to energize. At this time, the first heater 21a and the second heater 21b of the hot air heater 21 are energized one by one for a predetermined time at different times. Further, when the washing and drying steps are set to be performed consecutively by the washing / drying setting switch, the warm air heater 21 is not energized in the washing step.

The operation of the above configuration will be described with reference to FIG. 4. In step 40, the operation is started, and in step 41, the washing / drying setting switch is used to determine whether or not the washing step and the drying step are performed continuously. If only the washing process is set, the control means 27 turns on the water supply valve 29 in the rotary drum 1 to supply water, wash, rinse,
Dehydration is performed sequentially. The description of these operations is omitted.

Rinsing is performed a plurality of times by supplying and draining water. At the time of supplying water for the final rinse, the first rinse is performed in step 42.
When the predetermined time (10 seconds) elapses in step 43, the energization of the first heater 21a is turned off in step 44. After 5 seconds have passed in step 45, the process proceeds to step 46, where the second heater 21b is turned on. Then, when a predetermined time (10 seconds) has elapsed in step 47, the energization of the second heater 21b is turned off in step 48, and the process proceeds to the next step.

By these operations, the first heater 21
a and the temperature of the surface of the second heater 21b rises, and water droplets attached to the surface evaporate and dry. By drying the water droplets on the surface in this manner, rust and corrosion of the warm air heater 21 can be prevented, and the life of the warm air heater 21 can be extended.

When it is set in step 41 that the washing step and the drying step are performed continuously, the process proceeds to the next step, and the power supply to the warm air heater 21 is not performed in the washing step. That is, in the drying process, the hot air heater 21 is energized,
Since the water droplets adhering to the surface of the く dry, the power is not wasted during the washing process, so that the electric power can be prevented from being wasted.

In addition, by energizing the first heater 21a and the second heater 21b at different times and energizing the heaters one by one for a predetermined time, it is possible to prevent a temporary increase in electric energy. Further, it is possible to prevent an adverse effect that the lighting in the home becomes dark due to a voltage drop due to an increase in the electric energy.

Further, the first motor 15 and the second motor 1
6 is not energized, the first heater 21a and the second heater 21b are energized to similarly prevent a temporary increase in the amount of power. In addition, it is possible to prevent an adverse effect that the lighting in the home becomes dark.

In this embodiment, the first heater 21a
After the power is supplied to the second heater 21b, it is needless to say that the first heater 21a may be supplied with power after the second heater 21b is supplied with power. Also, the first heater 21a and the second heater 21
The predetermined time for energizing b is 10 seconds, but may be a time sufficient for the water droplet to evaporate and dry.

Since the dew condensation on the warm air heater 21 is generated by the humidity of the washing water, the drying operation by energizing the warm air heater 21 is performed once in the latter half of the washing process. The risk of dew condensation on 21 is reduced. In the present embodiment, the energization of the warm air heater 21 is performed at the time of the last rinse water supply, but the same effect is obtained in the latter half of the washing process. That is, power may be supplied to the hot air heater 21 during the inertial rotation until the rotation of the rotary drum rotates at high speed due to dehydration and the power supply to the second motor 15 is turned off and then stops.

(Embodiment 2) Control means 27 in FIG.
Means that when the first motor 15 and the second motor 16 are not energized at the end of the washing process, for example, after the final dehydration, the hot water heater 13 is turned on for a predetermined time (eg, 10 seconds)
The power is turned on. In addition, when the washing and drying steps are set to be performed consecutively by the washing / drying setting switch, power is not supplied to the hot water heater 13 during the washing step. Other configurations are the same as those in the first embodiment.

The operation will be described with reference to FIG. 4 in the above configuration. In step 50, the operation is started, and in step 51, the washing / drying setting switch is used to determine whether or not the washing step and the drying step are performed continuously. If only the washing process is set, the control means 27 turns on the water supply valve 29 in the rotary drum 1 to supply water, wash, rinse,
Dehydration is performed sequentially. The description of these operations is omitted.

After the final dehydration of the washing step, step 52
Then, the power supply to the hot water heater 13 is turned on, and after a predetermined time (10 seconds) has elapsed in step 53, the power supply to the hot water heater 13 is turned off in step 54. By drying the water droplets attached to the surface of the hot water heater 13 in this manner, rust and corrosion of the hot water heater 13 can be prevented, and the life of the hot water heater 13 can be extended.

If it is determined in step 51 that the washing step and the drying step are to be performed consecutively, the process proceeds to the next step, and the power supply to the hot water heater 13 is not performed in the washing step. That is, in the drying process, warm air is supplied into the rotating drum 1,
Water droplets adhering to the surface of the hot water heater 13 can be dried, and by not supplying power to the hot air heater 13 at the end of the washing process, power can be prevented from being wasted.

Further, the first motor 15 and the second motor 1
6 is not energized, by energizing the hot water heater 13, it is possible to temporarily prevent an increase in the amount of power, and a decrease in voltage due to the increase in the amount of power causes darkening of domestic lighting. This can prevent the adverse effect.

In this embodiment, the energization of the hot water heater 13 is turned on after the final dehydration in the washing process. The electric power may be supplied to the hot water heater 13 during the inertial rotation until the rotation stops after turning off the power supply. The predetermined time for energizing the hot water heater 13 is 10
Although it is set to seconds, it may be sufficient for the water droplet to evaporate and dry.

[0046]

As described above, according to the first aspect of the present invention, a rotating drum for storing laundry and having a rotating shaft in a substantially horizontal direction, a motor for driving the rotating drum, and a blower A heat exchanger provided in a circulation path having means for directly exchanging heat of hot air containing moisture in the rotary drum with water; a hot air heater provided in the circulation path; and control for controlling a washing process and a drying process. Means, the control means, since the power supply to the warm air heater for a predetermined time during the washing process, it is possible to prevent water droplets from adhering to the surface of the warm air heater due to humidity during washing, The life of the hot air heater can be extended. When the hot air heater is corroded, the insulation resistance between the nichrome wire of the sheathed heater and the outer tube is reduced. However, by preventing the corrosion, safety can be improved.

According to the second aspect of the present invention, the warm air heater is constituted by a plurality of heaters, and the control means changes the time to the plurality of heaters one by one for a predetermined time during the washing process. As a result, the current flowing through the warm air heater can be reduced, the amount of power can be prevented from instantaneously increasing, and the lighting in the home becomes darker due to the voltage drop due to the increase in the amount of power. The adverse effects can be prevented.

According to the third aspect of the present invention, the control means supplies power to the warm air heater when power is not supplied to the motor. It is possible to prevent the electric energy from instantaneously increasing without energizing at the same time.

According to the fourth aspect of the present invention, the control means supplies electricity to the warm air heater in the latter half of the washing process, so that the control means adheres to the surface of the warm air heater by supplying electricity to the warm air heater. After drying the water droplets, the water droplets can be prevented from adhering again.

According to the fifth aspect of the present invention, when the setting is made such that the washing step and the drying step are performed continuously, the control means does not supply power to the warm air heater during the washing step. Therefore, during the drying process, the hot air heater is energized,
Since the water droplets adhering to the surface of the warm air heater dries, the power is not wasted during the washing process, so that the electric power can be prevented from being wasted.

According to the sixth aspect of the present invention, a rotating drum for storing laundry and having a rotating shaft in a substantially horizontal direction, a motor for driving the rotating drum, and heating washing water in the rotating drum And a control means for controlling a washing step and a drying step. Since the control means supplies power to the hot water heater for a predetermined time at the end of the washing step, the surface of the hot water heater during washing is provided. The water drops adhering to the heater can be dried, and the life of the hot water heater can be extended. Further, when the hot water heater corrodes, the insulation resistance between the nichrome wire of the sheathed heater and the outer tube decreases, but by preventing the corrosion, safety can be improved.

According to the seventh aspect of the present invention, the control means supplies power to the hot water heater when power is not supplied to the motor, so that power is supplied to the motor and the hot water heater simultaneously. Therefore, the amount of power can be prevented from instantaneously increasing, and the adverse effect that the lighting in the home becomes dark due to the voltage drop due to the increase in the amount of power can be prevented.

According to the eighth aspect of the invention, the control means does not energize the hot water heater at the end of the washing step when the washing step and the drying step are set to be performed continuously. Because hot air is supplied into the rotating drum during the drying process, water droplets attached to the surface of the hot water heater can be dried, and power is wasted by not supplying power to the hot air heater at the end of the washing process. Can not be used.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a drum type washing and drying machine according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the drum type washer / dryer.

FIG. 3 is a block circuit diagram of the drum type washer / dryer.

FIG. 4 is an operation flowchart of the drum type washer / dryer.

FIG. 5 is an operation flowchart of a drum-type washing / drying machine according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view of a conventional drum type washer / dryer.

[Explanation of symbols]

 Reference Signs List 1 rotating drum 4 rotating shaft 15 first motor (motor) 16 second motor (motor) 20 blower fan (blower means) 21 hot air heater 23 heat exchanger 25 circulation path 27 control means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI D06F 58/28 D06F 58/28 Z

Claims (8)

[Claims] 1. A rotating drum that stores laundry and has a rotating shaft in a substantially horizontal direction, a motor that drives the rotating drum, and hot air containing moisture in the rotating drum provided in a circulation path that has a blowing unit. A heat exchanger for directly exchanging heat with water, a hot air heater provided in the circulation path, and control means for controlling a washing step and a drying step, wherein the control means comprises the step of: A drum-type washer / dryer that is energized for a predetermined time. 2. The hot air heater comprises a plurality of heaters,
2. The drum-type washing / drying machine according to claim 1, wherein the control means changes the time to the plurality of heaters one by one for a predetermined time during the washing process. 3. The drum-type washing / drying machine according to claim 1, wherein the control means supplies electricity to the warm air heater when electricity is not supplied to the motor. 4. The drum-type washing / drying machine according to claim 1, wherein the control means supplies electricity to the warm air heater in the latter half of the washing process. 5. The control device according to claim 1, wherein when the washing step and the drying step are set to be performed continuously, the control unit does not energize the hot air heater in the washing step.
Item 8. A drum-type washer-dryer according to item 9. 6. A rotating drum for storing laundry and having a rotating shaft in a substantially horizontal direction, a motor for driving the rotating drum, a hot water heater for heating washing water in the rotating drum, a washing step and a drying step. And a control unit for controlling the temperature of the hot water heater at the end of the washing process. 7. The drum-type washing / drying machine according to claim 6, wherein the control means supplies power to the hot water heater when power is not supplied to the motor. 8. The drum-type control device according to claim 6, wherein the control means does not energize the hot water heater at the end of the washing process when the washing process and the drying process are set to be performed continuously. Washing and drying machine.