JP2008006179A - Drum washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine capable of performing optimal control for cloth quality of clothing. <P>SOLUTION: The washing machine has a DC brushless motor 15 for rotationally driving a drum 30 stored in a tank 6 and a water supply device 22 for supplying water to the tank 6. On the basis of a weight rank of the clothing detected by a weight detection means 10 before a washing process and a torque output rank of the DC brushless motor 15 detected by a torque detection means 10 when the clothing contains water, the cloth quality of the clothing is determined by a data table stored beforehand, utilizing the property of the water content in cloth quality of the clothing, and different controls are performed according to the result. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drum type washing machine for determining fabric quality.

  In a conventional washing machine, cloth quality is detected by using the water supply capacity of clothes by measuring the amount of change in the water level before and after stirring the clothes with a pulsator after supplying water to the washing dewatering tank. The thing is provided (refer patent document 1).

Also, in the conventional drum type washing machine, the weight of the laundry in the rotating layer is discriminated based on the magnitude of the torque current during the period when the rotational speed is changed by generating the rotational driving force of the vector controlled motor. Is provided. And what controls the quantity of the washing water etc. which are stored in a water tank at the time of a washing process based on the detection result of the weight is provided (refer to patent documents 2).
JP-A-8-173683 JP 2004-13286 A

However, the washing machine disclosed in Patent Document 1 determines the cloth quality of the clothes by detecting the water level of the clothes before and after water supply, and has a problem of applying the accuracy of the cloth quality determination. There are various types of clothing such as cotton and chemical fiber, and there is a need for optimal control depending on the type of clothing, but it is not possible to perform optimal control because of the accuracy. It was.
In particular, when chemical fiber has better rinsing properties than cotton, but the amount of water in the rinsing process is the same as the amount of water required for cotton, the optimal amount of water for clothing containing chemical fiber There was a problem that more water was used.

Moreover, in patent document 2, the weight of the laundry in a rotation layer is detected based on the magnitude | size of the torque current in the period when the rotational driving force of the motor which carries out vector control is generated, and the rotational speed is changing. Although the drum type washing machine is controlled based on the detection result, the cloth quality is judged and the optimum control for the cloth quality is not performed.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a drum-type washing machine capable of performing control suitable for the cloth quality by accurately determining the cloth quality.

  In order to achieve the above object, a drum-type washing machine according to the present invention includes an outer box, a water tank elastically supported in the outer box, a drum for storing and rotating clothes in the water tank, A motor for rotating the drum; water supply means for supplying water to the water tank; torque detection means for detecting the torque rank of the motor; and weight detection means for detecting the weight rank of the clothes housed in the drum. And a cloth quality determining means for determining the cloth quality of the clothing based on the results of the torque detecting means and the weight detecting means, and the cloth quality determining means is the clothing before the washing process by the weight detecting means. The cloth quality of the clothes is determined based on the weight rank of the motor and the torque rank of the motor in a state where the clothes include water by the torque detection means, and different control is performed depending on the result of the determined cloth quality. The a main feature.

  According to the drum type washing machine of the present invention, the weight rank of the garment detected by the weight detection means before the washing process, and the torque output rank of the motor detected by the torque detection means when the garment contains water. Since the quality of clothing is determined based on the moisture content of the clothing based on the quality of the clothing, the quality of the clothing can be determined accurately, and the optimal control for the quality of the fabric is performed based on the determination result. be able to.

  Hereinafter, an embodiment in which the washing machine according to the present invention is applied to a drum-type washing and drying machine will be described. FIG. 1 is a diagram showing a flowchart of the operation of the drum type washing and drying machine. FIG. 2 is an external perspective view of the drum type washing and drying machine. FIG. 3 is a longitudinal side view showing the overall configuration of the drum type washing and drying machine. FIG. 4 is an electrical configuration diagram of the drum type washing and drying machine. FIG. 5 is a relative table of the weight of clothing and its determination rank. FIG. 6 is a relative table of the output torque value of the DC brushless motor and the determination rank of the output torque value. FIG. 7 is a table for determining the clothing quality based on the clothing weight determination rank and the output torque determination rank.

As shown in FIGS. 2 and 3, the drum-type washing and drying machine has a rectangular box shape as a whole, and a circular laundry input 4 is formed on the front surface 1a of the outer box 1 forming the outer shell. A door 5 that can be opened and closed is attached to the laundry input port 4.
A water tank 6 is disposed inside the outer box 1, and this water tank 6 forms a drum shape having an opening on the front surface. A pair of left and right suspensions 7 (see FIG. 3) ), And the support form is a shape that rises and inclines toward the opening on the front surface.
An annular water tank cover 6 a is provided at the front of the water tank 6, and the water tank cover 6 a and the laundry inlet 4 are connected in a watertight manner by a bellows 8 as will be described later.
The rear end surface portion 6c (the right end surface portion in FIG. 3) constituting the closed bottom surface of the water tank 6 has sufficient mechanical strength, and a DC brushless motor 15 is attached to the back surface thereof. In addition, an air supply port 16 to be described later is formed in the upper part. In addition, a drain port 17 is formed at the bottom of the side surface of the water tank 6, a drain valve 18 is attached downstream thereof, and a drain hose 19 is connected to the tip thereof. Further, a flexible hose 20 is connected to the upper surface of the water tank 6, and this flexible hose 20 is connected to a rear water supply device 22 via a detergent case 21 provided at the front upper part of the outer box 1 to supply water. It is connected to the water supply port 23 of the device 22.

A small-diameter drum 30 having a predetermined gap is disposed inside the water tank 6. The closed bottom surface of the drum 30 is provided so as to function as, for example, a metal drum support 30b having a sufficient thickness. The drum shaft 30c attached to the center of the drum support 30b is attached to the DC brushless motor 15 from the center of the bottom of the water tank 6. Thereby, the drum 30 is rotatably supported by the water tank 6 with the same inclination as the water tank 6.
Further, the drum 30 is provided with a large number of holes 31 through which water and air can pass through almost the entire area of the peripheral wall portion and the drum support 30b (only a part is shown in FIG. 3), and the inner peripheral portion of the body portion. Baffles 32 are attached at several locations.
A drum cover 30 a is attached to the front portion of the drum 30. The drum cover 30a is attached to the peripheral edge of the opened front surface of the drum 30, has a ring shape having a laundry entrance 33 at the center, and is made of a heat-resistant material.

The aquarium cover 6a described above has a ring shape having an opening at the center, and is made of a metal such as an iron plate or a stainless plate, or a rigid material having heat resistance such as glass or synthetic resin.
The water tank cover 6a has an exhaust port 40 formed in an upper portion thereof, and an exhaust duct 41 that covers and communicates with the exhaust port 40 is provided outside thereof.
The exhaust duct 41 is provided in an annular shape so as to surround the water tank cover 6a, and the lower portion of the exhaust duct 41 is provided below the water tank 6 through a flexible duct 42 having a bellows-like portion. It is connected to the drying unit duct 43.

The drying unit duct 43 extends from the front to the rear in the outer box 1, and a fan casing 44 is provided at the rear thereof. A discharge port 45 formed above the fan casing 44 is connected to an air supply duct 47 via a flexible duct 46 having a bellows-like portion. As shown in FIG. 3, the air supply duct 47 surrounds the upper part of the DC brushless motor 15, extends in a substantially arc shape along the rotation direction of the drum 30, and reaches the highest position directly above the DC brushless motor 15. The front end portion of the water tank 6 is connected to the air supply port 16 at the upper portion of the rear end surface portion 6c. And the air trap 11a is provided in the outer side of the air supply duct 47 so that this air supply port 16 may be faced, and the bubble sensor 11 is comprised by the air tube 11b connected to it.
Here, the exhaust duct 41 connected to the exhaust port 40 of the water tank cover 6a, the flexible duct 42, the drying unit duct 43, the fan casing 44, the flexible duct 46, and the air supply port 16 of the water tank 6 are provided. A circulation duct 48 (corresponding to a ventilation path) communicating with the inside of the water tank 6 is configured by the connected air supply duct 47. A fan 49 a constituting a blower 49 is disposed in the fan casing 44 in the circulation air passage 48, and a fan motor 49 b is disposed outside the fan casing 44.
An evaporator (evaporator) 51 and a condenser (condenser) 52 of the heat pump mechanism 50 are arranged in the drying unit duct 43. As is well known, the heat pump mechanism 50 constitutes a refrigeration cycle by circulatingly connecting a compressor (compressor) 53, a condenser 52, a capillary tube (throttle) (not shown), and an evaporator 51 in order by a pipe. As the compressor 53 is driven, the refrigerant circulates through them in order. At this time, in the condenser 52, the refrigerant releases heat and liquefies, and the condenser 52 functions as a heating means for circulating air. Further, the evaporator 51 cools the surroundings by removing the surrounding heat when the refrigerant evaporates, and the evaporator 51 functions as a cooling means for circulating air. In this case, the drying function means is constituted by the heat pump mechanism 50 such as the blower 49, the condenser 52, and the evaporator 51, and these are disposed in the outer box 1 below the water tank 6, and therefore, It is arranged at the lower part in the box 1. Further, the compressor 53 that is larger in the height direction than the drying unit duct 43 is disposed in front of the water tank 6 that is inclined upward toward the front surface 1 a of the outer box 1.

Here, the front portion 1a of the outer box 1 will be described.
First, as described above, the openable / closable door 5 is attached to the front surface portion 1a of the outer box 1. The front portion 1a includes a front panel 2 as a front plate and an operation panel 3. The operation panel 3 executes various processes related to the operation of the drum type washing and drying machine by the power source and the user. There are provided an operation unit 63 having various operation keys and a liquid crystal panel 75 for displaying the washing process.
At the center of the front face portion 1a, as shown in FIG. 3, there is provided a circular inlet slot frame 90 in which the door 5 is housed and the center is recessed.
The front panel 2 is provided with an open button 95 (see FIG. 2) for releasing the closed state of the door 5, and the door 5 is opened by pushing.

Further, as shown in FIG. 3, the door 5 has a circular shape that matches the shape of the laundry input port 4, and its peripheral end is accommodated in the input port frame 90, so that the door 5 is closed. The front surface of the door 5 is configured to be substantially flush with the front panel 2.
And the laundry input port 4 is opened and closed by rotating forward by a hinge (not shown) attached to the left end of the door 5. Further, a hook (not shown) for holding a closed state is provided at the right end of the door 5.
Further, a see-through window 96 that is a see-through portion having the same size as the laundry insertion opening 4 is provided at the center of the door 5. As shown in FIG. 3, the see-through window 96 has a double structure including a front glass 97 on the front surface of the door 5 and a rear glass 98 provided in parallel to the front glass 97 on the rear surface of the door 5. ing.

On the other hand, the bellows 8 as a sealing member is an elastic material that reduces vibration from the water tank 6, for example, as shown in FIG. 3, and is made of an ethylene / propylene synthetic rubber (abbreviated as EPDM) having excellent chemical resistance. The rear part of the attachment surrounds the front end part of the water tank cover 6a, and the rear part of the attachment is attached by an annular bellow ring. The front part of the rear part of the attachment is formed in a bellows shape so as to absorb vibrations from the water tank 6.
On the other hand, the front of the bellows 8 is formed with a ring-shaped upright portion extending in the inner peripheral direction in the vicinity of the laundry input port 4, and the rear glass 98 as the back surface of the door 5 comes into contact with the upright portion. The door 5 and the water tank 6 are configured to be watertight.

Here, an electrical configuration diagram of the drum type washing and drying machine will be described.
The control device 10 controls the operation of the drum type washer / dryer, performs various determinations, and detects judgments. Specifically, the control device 10 stores various operation programs such as operation of the drum type washing and drying machine in advance, and further includes a motor current detection system 80 (torque detection means, weight detection means). , Which corresponds to the cloth quality judging means), and has the function of detecting the weight of the clothes, detecting the output torque of the motor, and judging the cloth quality of the clothes, which will be described later, by detecting and determining the motor current. Yes.
In addition, the control device 10 rotates the operation unit 63 that selects various operation operations of the washing and drying machine, the liquid crystal panel 75 that displays the selected operation course and operation status, and the drum 30 by the user's operation. A DC brushless motor 15, a compressor 53, a drain valve 18, a water supply device 49b, and a fan motor 49b are connected.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG.
First, as the well-known washing and drying function, as is well known, washing, rinsing, dehydration and drying processes are executed, and each process is selected and executed in the operation unit 63 of the operation panel 3. For example, when it is desired to perform washing, rinsing, dehydration, and drying processes on the “standard” course, first, the door 5 is opened and the laundry (not shown) is passed through the laundry inlet 4 to the laundry entrance / exit. It is put into the drum 30 from 33 and accommodated. Then, the detergent is accommodated in the detergent case 21, and the drum type washing and drying machine is turned on by the operation unit 63.
Then, a button for automatically performing “standard” operation from “washing” to “drying” of the operation unit 63 is selected. Then, by pressing the “start” button on the operation unit 63, the operation from “washing” to “drying” is set to be executed in the “standard” course driving, and the operation is performed based on the driving course program stored in advance.

The operation of the “standard” course will be described automatically from “washing” to “drying”.
First, when the operation is set by the “start” button, the control device 10 detects the weight of the clothes accommodated in the drum 30 (step S1). For example, the DC brushless motor 15 connected to the rotating shaft of the drum 30 is rotationally driven by vector control, and the load current (q-axis current) output by the DC brushless motor 15 at that time is used as a motor current detection system. 80 is detected, and the detected current is determined by determining the clothing weight based on the data table of the relative relationship between the current value and the clothing weight stored in the control device 10 in advance. The determination result is determined by a relative table of determination result weights and determination ranks (hereinafter referred to as a clothing weight determination rank table) shown in FIG.
This clothing weight determination rank table divides the clothing weight into 6 levels, and ranks each weight from 0 grams to 6000 grams every 1000 grams.
The reason for detecting the weight of the garment before supplying water in the washing process immediately after the operation is started is to detect the weight of the garment when the garment is not wet. When clothes are put into the machine, they are usually dry clothes that are not wet, so weight detection is performed on the assumption that the clothes put before the “washing process” are not wet. is doing.

  Next, a washing process is executed (step S2). The amount of washing water stored in the aquarium 6 is determined by a program stored in advance in the control device in accordance with the clothing weight determination rank based on the determination result made in the clothing weight detection. The valve 18 is closed and the amount of wash water determined from the water supply device 22 is supplied and stored in the water tank 6 through the detergent case 21 and the flexible hose 20. At this time, the detergent accommodated in the detergent case 21 is also supplied into the water tank 6 together with water. Then, the DC brushless motor 15 is driven and the drum 30 is rotated in both forward and reverse directions at a low speed, whereby the laundry in the drum 30 is washed. At this time, the baffle 32 sequentially draws up the laundry and the washing water to promote the stirring of the washing and the washing water.

  When the washing process is completed, the drain valve 18 is opened and the water in the water tank 6 is discharged, followed by intermediate dehydration. The intermediate dehydration is performed by discharging the water contained in the laundry from the hole 31 by centrifugal force by rotating the drum 30 at a high speed in one direction by the DC brushless motor 15.

  Then, the control device 10 detects the cloth quality of the clothes accommodated in the drum 30 and wetted by the washing water (step S3). For example, by rotating the drum 30, the current of the DC brushless motor 15 during rotation is measured, and the output torque characteristic of the DC brushless motor 15 is measured. This is because the output torque increases in proportion to the increase in the rotational speed of the DC brushless motor 15, but it is known that the manner in which the torque increases depends on the weight of the clothes in the drum, and this output torque Is generally proportional to the q-axis current value (hereinafter simply referred to as current) obtained when the DC brushless motor 15 is vector-controlled as is generally known. The output torque characteristic of the DC brushless motor 15 is determined by measuring the current value of the DC brushless motor 15.

The detected current values are ranked based on the output torque characteristics of the DC brushless motor 15 as shown in FIG. 6 (hereinafter, the table in FIG. 6 is referred to as an output torque determination rank table).
In this embodiment, ranking is executed according to the current value of the DC brushless motor corresponding to the output torque value, and it is divided by 0 (mA / 1000) to 1000 (mA / 1000), and 9 from 9000 (mA / 1000). There are 10 rankings, with 9001 (mA / 1000) or more as one rank.

The cloth of FIG. 7 stored in the control device is stored on the basis of the data of the clothes weight rank derived from the clothes weight determination rank table and the torque rank of the DC brushless motor 15 derived from the output torque determination rank table. The fabric quality stored in the drum can be determined by checking the quality determination table.
This cloth quality judgment table is prepared based on experimental data experimentally conducted in advance, and the basis of this data is that the dried clothes before the washing process are first wetted with washing water. Of course, the weight increases. In that case, when the fabric used for clothing is cotton, the washing water when wet is higher than the synthetic fabric other than cotton because of its high water supply rate. It is known that the moisture content increases, and by utilizing this change and difference in the moisture content of wet clothing before and after washing, clothing is made of cotton and non-cotton fabrics. It is to judge the difference.

In other words, the weight of the clothes detected before the washing process increases after the washing process because it contains water of washing water, and the rate of increase varies depending on the cloth quality of the clothes. The fabric quality is determined using the fact that the output torque of 15 also differs.
Specifically, with reference to FIG. 7, when the weight determination is “1” based on the clothing weight determination rank determined in step S <b> 1, the output torque is determined to be “3” or more based on the experimental result. If it is clothing, the cloth quality of the clothing is determined to be “cotton”, and if the output torque determination is “2”, the cloth quality is determined to be “mixed” of cotton and synthetic fiber, and the force torque If the determination is “1”, it is determined to be “synthetic fiber”. When the other weight determination is other than “1”, the fabric quality of “cotton”, “mixed fiber”, and “synthetic fiber” is determined according to the difference in the rank of torque output as shown in the table.

When this cloth quality determination step is completed, a rinsing process is performed (steps S5, S7, S9).
This rinsing process is performed to store washing water stored in the water tank 6 for rinsing according to a program stored in advance in the control device in accordance with the cloth quality and weight judgment based on the cloth quality judgment detected in step S3. The amount is determined. This water storage amount is determined by the experimental results, and even if the weight determination is the same, if it is “cotton” determination, the water supply amount is in accordance with the weight (step S5), and “mixed spinning” determination is made. If so, the amount is smaller than the amount of water supplied for “cotton” (step S7), and if it is determined for “synthetic fiber”, the amount is less than the amount of water supplied for “mixed spinning” (step S9). The amount of water supply for rinsing is determined.
In other words, the difference in the amount of water supplied by this fabric is that, as mentioned earlier, in the clothing with low moisture content, there is little detergent contained in the clothing in this washing process. The amount of water can be small, and the water content of synthetic fabric that has a lower moisture content than cotton can be rinsed with less water than cotton clothing. It is what.
Then, the control unit 10 closes the drain valve 18, and the determined amount of washing water for the rinsing process is supplied from the water supply device 22 through the flexible hose 20 and stored in the water tank 6.

Next, the DC brushless motor 15 is driven and the drum 30 is rotated in both forward and reverse directions at a low speed, so that the laundry in the drum 30 is rinsed. At this time, the baffle 32 sequentially lifts the laundry and water, and the washing and water are stirred to promote rinsing.
In this rinsing process, the rinsing is performed twice to make the rinsing more efficient, and during that time, the drum 30 is rotated in one direction at a high speed to control the dehydration of the clothes.
When the rinsing process is completed, a final dehydration process is performed (step S10). The final dehydration process is performed by rotating the drum 30 in one direction at high speed by the DC brushless motor 15 after discharging the water in the water tank 6. During the final dehydration process, in order to peel off the clothes clinging to the outer periphery of the drum 30, the drum is rotated in both forward and reverse directions at a low speed, and cloth peeling control is also performed.

When this final dehydration process is completed, a drying process is then performed (step S11). In this drying process, the DC brushless motor 15 rotates the drum 30 in both forward and reverse directions at low speed, and drives the blower 49 and the compressor 53 of the heat pump mechanism 50. Among these, when the blower 49 is driven, the air in the drying unit duct 43 is sucked to the fan casing 44 side and the discharge port 45 as shown by the solid line arrow A in FIG. Then, the air is discharged to the air supply duct 47 side through the flexible duct 46.
The air discharged to the air supply duct 47 is supplied from the air supply port 16 into the water tank 6. Most of the air supplied into the water tank 6 is supplied into the drum 30 through the holes 31 of the drum 30. The air in the drum 30 and the water tank 6 flows toward the opening of the water tank 6, hits the rear glass 98 and the bellows 8 of the door 5, and is discharged from the exhaust port 40 at the front part of the water tank 6 to the exhaust duct 41 side. . The air discharged to the exhaust duct 41 side is circulated so as to return to the drying unit duct 43 through the lower flexible duct 42.
When the compressor 53 is driven, a high-temperature and high-pressure refrigerant flows from the compressor 53 to the condenser 52, where it dissipates heat and liquefies. At this time, the air passing through the condenser 52 of the drying unit duct 43 is heated by the condenser 52. The liquefied refrigerant passes through the capillary tube and is depressurized, and then flows into the evaporator 51 where it takes away the surrounding heat and vaporizes. At this time, the air passing through the evaporator 51 of the drying unit duct 43 is cooled by the evaporator 51.

The refrigerant vaporized by the evaporator 51 returns to the compressor 53, is compressed again, and is discharged as a high-temperature and high-pressure refrigerant.
In this way, the warm air heated by the condenser 52 is supplied into the drum 30 to heat the laundry in the drum 30, deprive the laundry of moisture, and dry the laundry. The air deprived of moisture is cooled in the process of passing through the evaporator 51 of the drying unit duct 43, and the moisture contained in the air is condensed and dehumidified. The dehumidified air is heated and warmed in the process of passing through the condenser 52 again, and circulates so that the warm air is supplied into the drum 30. As the air in the water tub 6 is circulated through the circulation air passage 48 in this manner, the laundry in the drum 30 is dried.
Thus, the operation of the “standard” operation course in which the operation from “washing” to “drying” is automatically completed.

According to the above-described embodiment, the following effects can be obtained.
The clothing weight determination rank and the output torque rank determined by the current values of the motor current detection system 80 that detects the weight of the garment accommodated in the drum 30 and the motor current detection system 80 that detects the output torque of the DC brushless motor 15 Therefore, the cloth quality stored in the drum 30 can be determined in accordance with the cloth quality determination table for determining the cloth quality of the clothes stored in the control device 10 in advance. Based on this, the amount of water used can be reduced because the amount of water used in the rinsing process can be optimized.

  In addition, the control unit detects the weight of the clothes when the clothes are not yet wet before the washing process, detects the output torque of the DC brushless motor 15 in a state where the clothes after the washing process contain water, Since the fabric quality is determined based on the result of each determination using the moisture content of the fabric, it is possible to supply the optimal amount of water for rinsing clothes including detergents. No need to use it. In particular, when the cloth quality is determined to be a cloth (synthetic fiber) having a low water supply rate according to the cloth quality determination table, the amount of water used can be reduced by reducing the amount of water used in the rinsing process.

Further, in this embodiment, rinsing is performed with the optimum amount of water according to the cloth quality by changing the water supply amount of the rinse according to the result of the cloth quality. Alternatively, the driving time of the DC brushless motor 15 during the dehydration process may be changed.
In the rinsing process, the stirring time for rinsing may be changed. That is, by changing the driving time of the DC brushless motor 15, it is possible to perform the rinsing control optimal for the cloth quality.
For example, in this case, when it is determined as “synthetic fiber” based on the cloth quality determination result, the driving time of the DC brushless motor 15 in the rinsing process may be shorter than that in the case of “cotton”. This is because, when the cloth quality of the garment is synthetic fiber, the moisture content is lower than that of cotton, so that the amount of detergent is also small. Therefore, it can be sufficiently rinsed with a stirring time smaller than that of cotton, and no extra motor driving power is used.

Also in the dehydration process, the driving time of the DC brushless motor 15 may be increased or decreased according to the result of the cloth quality determination, and the driving time of the DC brushless motor 15 may be changed to perform the dewatering process suitable for the cloth quality. For example, when it is determined as “synthetic fiber” according to the cloth quality determination result, the dehydration time is made shorter than when it is determined as “cotton”, and the driving time of the DC brushless motor 15 is shortened. This is because if the fabric of the clothes is synthetic fiber, the moisture content is lower than that of cotton, so the time required for dehydration is less than the dehydration time required for cotton, and extra DC brushless motor 15 drive power is used. It is possible to reduce power consumption due to the operation.
In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

The figure which shows the flowchart of the driving | operation operation | movement of the drum type washing-drying machine of this invention. External perspective view of drum type washer / dryer Longitudinal side view showing the overall structure of the drum-type washing and drying machine Electrical configuration of drum type washer / dryer Relative table of clothing weight and its rank Relative table of DC brushless motor output torque value and output torque value judgment rank Table for judging the quality of clothing based on the clothing weight judgment rank and the output torque judgment rank

Explanation of symbols

In the figure, 1 is an outer box, 1a is a front part, 2 is a front panel, 3 is an operation panel, 4 is a laundry inlet, 5 is a door, 6 is a water tank, 6a is a water tank cover, 6b is an opening, and 6c is Rear end surface portion, 7 is a suspension, 8 is a bellows, 8b is a standing portion, 8c is an extension portion, 8d is a screw hole, 10 is a control device, 11 is a bubble sensor, 11a is an air trap, 11b is an air tube, and 11c is Pressure sensor, 15 DC brushless motor, 16 air supply port, 17 drainage port, 18 drainage valve, 19 drainage hose, 20 flexible hose, 21 detergent case, 22 water supply device, 23 water supply Mouth, 30 is drum, 30a is drum cover, 30b is drum support, 30c is drum shaft, 31 is hole, 32 is baffle, 33 is laundry doorway, 40 is exhaust port, 41 is exhaust duct, 42 is flexible Duct, 43 is a drying unit Duct, 44, fan casing, 45, discharge port, 46, flexible duct, 47, air supply duct, 48, circulation air passage, 49, blower, 49a, fan, 49b, fan motor, 50, heat pump mechanism, 51 is an evaporator, 52 is a condenser, 53 is a compressor, 63 is a selection operation unit, 75 is a liquid crystal panel, 80 is a motor current detection system, 90 is a slot for opening, 95 is an open button, 96 is a see-through window, 97 Indicates a front glass, and 98 indicates a rear glass.

Claims (2)

An outer box,
A water tank elastically supported inside the outer box;
A drum that houses and rotates the clothes inside the aquarium;
A motor for rotating the drum;
Water supply means for supplying water to the water tank,
Torque detecting means for detecting the torque rank of the motor;
A weight detection means for detecting the weight rank of the clothing housed in the drum;
Cloth quality determination means for determining the quality of clothing based on the results of the torque detection means and the weight detection means;
The cloth quality determination means determines the cloth quality of the clothes based on the weight rank of the clothes before the washing process by the weight detection means and the torque rank of the motor in a state where the clothes contain water by the torque detection means. And
A drum-type washing machine that performs different control depending on the result of the determined fabric quality. When it is determined that the water supply rate is low according to the result of the cloth quality determined by the cloth quality determining means,
The drum type washing machine according to claim 1, wherein the amount of water supplied from the water supply means to the water tank is reduced during the rinsing process.

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