JP2006068053A - Washing machine - Google Patents

Abstract

A detection level for detecting an unbalanced state of laundry in a rotating drum is changed, and during a dehydration operation, a dehydration operation according to a set state is performed.
A water receiving tub 3 elastically supported by a washing machine body 9 encloses a rotating drum 1 having a rotation center axis in a substantially horizontal direction or a substantially inclined direction, and the rotating drum 1 is rotated by a motor 5. At the same time, the rotation detecting means 21 for detecting the rotating state of the rotating drum 1 detects that the clothes in the rotating drum 1 during the dehydrating operation are biased and unbalanced, and the input setting means 16 is specially operated. To set the unbalance detection level according to the usage conditions.
[Selection] Figure 1

Description

  The present invention relates to a washing machine that performs washing, rinsing, and dewatering in a rotating drum having a rotation center axis in a substantially horizontal direction or a substantially inclined direction.

  A conventional example of a drum-type washing machine is shown in FIG. As shown in the figure, a rotating drum 51 having a large number of through holes 52 formed in its peripheral surface is disposed in a water receiving tub 53 supported by a suspension structure in a washing machine casing 57. The rotating drum 51 is a motor 55. The laundry is rotated through the front opening of the water receiving basin 53 and the front opening of the rotary drum 51 by opening the door body 54 that is rotationally driven by the front door and provided openably on the front side of the washing machine casing 57. 51 so that it can be taken in and out.

  When the door body 54 is opened, laundry is put into the rotating drum 51, and a detergent is added to start the operation, water is supplied into the water receiving tub 53, and the supplied water is passed through the through holes 52 to enter the rotating drum 51. The required amount of water is also supplied. When the rotary drum 51 is rotationally driven by the motor 55 at a predetermined rotational speed, the laundry stored in the rotary drum 51 is hooked on the stirring protrusion 56 provided on the inner peripheral surface of the rotary drum 51 and lifted in the rotation direction. Then, by dropping from an appropriate height, the laundry is subjected to a tapping washing action, and washing is performed.

  After this washing process, the dirty washing water is drained and a rinsing process is performed using newly supplied water. When the rinsing process is completed, the rotating drum 51 is rotated at a high speed to perform a dehydration process. These steps are automatically executed based on a predetermined control procedure (see, for example, Patent Document 1).

  In the drum type washing machine, when the rotary drum 51 is stationary, the laundry is biased below the rotary drum 51. After the washing process and the rinsing process, the laundry is drained from the rotary drum 51, and the rotary drum 51 is rotated at a high speed. When performing a dehydration operation for dewatering from the laundry by centrifugal force, if the laundry remains biased to one side, the center of gravity of the rotating drum 51 becomes unbalanced and a large vibration is generated, so that a normal dehydration operation can be performed. There may not be.

In the conventional drum-type washing machine, the cloth unraveling process for rotating the rotary drum 51 at the first rotational speed, the cloth balancing process for increasing from the first rotational speed to the second rotational speed, and the third rotation. The dehydration operation is performed after a preliminary dehydration step of rotating the rotating drum 51 at a predetermined number of times at a speed and a balance determination step of detecting the balance of the laundry driven at the second rotation speed after the preliminary dehydration step. It is controlled.
Japanese Patent Laid-Open No. 10-201985

  However, in such a conventional configuration, depending on the environment (floor strength, etc.) in which the washing machine is installed and the usage conditions (type and quality of the laundry), large vibrations and noises may occur during dehydration. If the imbalance correction operation was repeated without starting up, there was a problem.

  The present invention solves the above-described conventional problems, and enables an optimum washing operation (dehydration operation) suitable for the environment in which the washing machine is installed or the use conditions to be performed by simple operation. The purpose is that.

  In order to achieve the above-mentioned object, the present invention provides a rotating drum having a rotating shaft in a substantially horizontal direction or a direction inclined from the horizontal direction, a water receiving tank containing the rotating drum elastically supported in the washing machine body, A motor for rotationally driving the rotating drum, a rotation detecting means for detecting the rotation state of the drum or the motor, and the clothes in the drum are in an unbalanced state due to the rotating state detected by the rotation detecting means during the dehydrating operation. A plurality of unbalance detection means for detecting the motor, a drive means for controlling the drive of the motor, a control means for controlling a series of control means, and an input setting means for setting an operation course, etc. According to the setting state set by specially operating the setting means, the unbalanced state detected by the plurality of unbalance detecting means is changed. It is one in which was set to change in conjunction with each other.

  This makes it easy to set the detection conditions for detecting the unbalanced state during dehydration operation in accordance with the environment and usage conditions of the environment where the washing machine is installed in advance or within the range of usage conditions. Therefore, it is possible to reduce the vibration during dehydration and to avoid repeatedly performing the imbalance correcting operation.

  The washing machine of the present invention sets a detection condition for detecting an unbalanced state of the laundry during the dehydration operation and a condition for detecting the dryness of the laundry during the drying operation, which are in accordance with the environment or usage conditions in which the washing machine is installed. By making it possible, optimal washing or drying operation can be performed under any conditions.

  According to a first aspect of the present invention, there is provided a rotary drum having a rotary shaft in a substantially horizontal direction or a direction inclined from the horizontal direction, a water receiving tank containing the rotary drum elastically supported in the washing machine body, and a rotary drum being driven to rotate. A rotation detecting means for detecting the rotation state of the drum or the motor, and a rotation state detected by the rotation detection means during the dehydration operation to detect that the clothes in the drum are in an unbalanced state. A plurality of imbalance detection means; a control means for controlling the drive of the motor; a control means for controlling a series of control means; and an input setting means for setting an operation course or the like. Depending on the setting state set by special operation, the unbalanced state detected by the plurality of unbalance detecting means is linked to each other. This makes it possible to adjust the vibration state during the dehydration operation with a simple operation, and the dehydration operation according to the environment in which the washing machine is installed or the range of use conditions is assumed. Can be achieved, and dehydration and noise can be reduced. Moreover, the dehydration operation according to the user's request can be realized.

  According to a second invention, there is provided storage means for storing input settings and the like in the first invention, and the control means stores the setting state set by specially operating the input setting means in the storage means. After the setting state is stored by the storage means, the washing operation is performed according to the setting state stored by the storage means, so that once the operation state is set by the user or the like, it is always set after the setting. Since the washing operation is performed under the specified conditions, it is possible to save the trouble of setting each time the operation is performed and to improve the operability.

  According to a third aspect of the present invention, in the first aspect of the invention, the control means performs the special operation by the input setting means in the same manner as the operation method for setting the driving operation for performing the repair inspection. It becomes possible to easily set the operating state, and it is possible to prevent the user or the like from erroneously setting it to another operating state by mistake.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
As shown in FIG. 2, the rotating drum 1 is formed in a bottomed cylindrical shape, and a large number of water passage holes 2 are provided on the entire surface of the rotating drum 1, and are rotatably disposed in the water receiving tank 3. A rotation axis (rotation center axis) 4 is provided at the rotation center of the rotary drum 1 in a substantially inclined direction, and the axial center direction of the rotary drum 1 is inclined downward from the front side toward the back side. A motor 5 attached to the back surface of the water receiving tank 3 is connected to the rotating shaft 4, and the rotating drum 1 is driven to rotate in the forward and reverse directions. Several protruding plates 6 are provided on the inner wall surface of the rotating drum 1.

  The opening provided in the upward inclined surface on the front side of the water receiving tub 3 is covered with a lid 7 so that it can be opened and closed. By opening the lid 7, the laundry can be taken in and out of the rotary drum 1 through the clothing entrance 8. ing. Since the lid body 7 is provided on the upward inclined surface, the laundry can be carried out without bending the waist.

  The water receiving tub 3 is suspended from the washing machine main body 9 by a spring body (not shown) so as to be swingable. One end of the drainage passage 10 is connected to the lower portion of the water receiving tub 3 and the other end of the drainage passage 10 is connected to the water receiving tub 3. The washing water in the water receiving tank 3 is drained by connecting to a drain valve (drainage means) 11. The water supply valve (water supply means) 12 supplies water into the water receiving tank 3 through the water supply path 13.

  In the present embodiment, the rotation shaft 4 is provided in a substantially inclined direction at the rotation center of the rotary drum 1 and the axial center direction of the rotary drum 1 is inclined downward from the front side to the back side. However, the rotating shaft 4 may be provided in the substantially horizontal direction at the rotation center of the rotating drum 1, and the axial center direction of the rotating drum 1 may be disposed in the substantially horizontal direction.

  The control device 14 is configured as shown in FIG. 1 and includes a microcomputer that controls operations of the motor 5, the drain valve 11, the water supply valve 12, and the like, and sequentially controls a series of steps of washing, rinsing, and dewatering. Control means 15 is provided. The control means 15 inputs information from the input setting means 16 for setting the driving course and the like, and displays the information on the display means 17 based on the information to notify the user, and starts the operation by the input setting means 16. Is set, the switching means 20 is controlled via the switching means drive circuit 19, the operations of the drain valve 11 and the water supply valve 12 are controlled, and the washing operation is performed.

  At this time, the control means 15 controls the rotation of the motor 5 by controlling the inverter 23 via the inverter drive circuit 22 based on the information from the position detection means 21 that detects the position of the rotor of the motor 5. ing. Although the motor 5 is a direct current brushless motor, although not shown, it is composed of a stator having a three-phase winding and a rotor having a two-pole permanent magnet disposed on the ring, and the stator has a three-phase winding. The first winding 5a, the second winding 5b, and the third winding 5c to be configured are wound around an iron core provided in a slot.

  The inverter 23 is composed of a switching element composed of a parallel circuit of a power transistor (IGBT) and a reverse conducting diode. A series circuit of a first switching element 23a and a second switching element 23b, a series circuit of a third switching element 23c and a fourth switching element 23d, and a fifth switching element 23e and a sixth switching element 23f A series circuit is configured, and the series circuit of each switching element is connected in parallel.

  Here, both ends of the series circuit of the switching elements are input terminals, connected to a DC power source, and output terminals are respectively connected to connection points of two switching elements constituting the series circuit of the switching elements. The output terminal is connected to the U terminal, V terminal, and W terminal of the three-phase winding, and the U terminal, V terminal, and W terminal are connected by the on / off combination of two switching elements constituting the series circuit of the switching element. The three states are positive voltage, zero voltage, and release, respectively.

  The on / off of the switching element is controlled by the control means 15 based on information from the three position detection means 21a, 21b, 21c made of the Hall IC. The position detection means 21a, 21b, and 21c are disposed on the stator so as to face the permanent magnets of the rotor at an electrical angle of 120 degrees.

  During one rotation of the rotor, the three position detecting means 21a, 21b, and 21c each output a pulse at an electrical angle of 120 degrees. The control means 15 detects when the signal state of any of the three position detection means 21a, 21b, 21c changes, and based on the signals of the position detection means 21a, 21b, 21c, the switching elements 23a-23f By changing the on / off state, the U terminal, the V terminal, and the W terminal are brought into three states of positive voltage, zero voltage, and release, and the first winding 5a, the second winding 5b, and the third winding of the stator. The coil 5c is energized to create a magnetic field and rotate the rotor.

  The switching elements 23a, 23c, and 23e are each controlled by pulse width modulation (PWM). For example, the rotational speed of the rotor is controlled by controlling the energization ratio of high and low at a repetition frequency of 10 kHz. The control means 14 detects the cycle each time the signal state of any of the three position detection means 21a, 21b, 21c changes, calculates the rotor rotational speed from the period, and sets it to the set rotational speed. The switching elements 23a, 23c, and 23e are PWM-controlled.

  The current detection means 24 includes a resistor 25 connected to one input terminal of the inverter 23 and a current detection circuit 26 connected to the resistor 25, and detects the input current of the inverter 23, that is, the current of the motor 5. The voltage signal is converted into a voltage signal, which is input to the control means 15. Further, the control means 15 performs A / D conversion on the input voltage signal and performs arithmetic processing as digital data to control the motor 5.

  When the motor 5 is a direct current brushless motor, the torque is substantially proportional to the input current. Therefore, the torque of the motor 5 is detected by detecting the input current value of the inverter 23 by the current detection circuit 26 connected to the resistor 25. be able to.

  The commercial power source 27 is connected to the inverter 23 via a DC power source conversion device including a diode bridge 28, a choke coil 29, and a smoothing capacitor 30. However, this is an example, and the configuration of the DC brushless motor 5, the configuration of the inverter 23, and the like are not limited thereto.

  As shown in FIG. 3, the input setting means 16 includes a washing time setting switch 16a for setting the washing time, a rinsing frequency setting switch 16b for setting the rinsing frequency, a dehydration time setting switch 16c for setting the dehydration time, and a course setting switch 16e. , A start / pause switch 16f, a power-on switch 16g, and a power-off switch 16h.

  The display means 17 includes a washing time display unit 17a, a rinse count display unit 17b, a dehydration time display unit 17c, a course setting display unit 17e, a detergent amount display unit 17f, a remaining time display unit 17g, a number display unit 17h, and the like. Yes.

  The storage means 31 is composed of a non-volatile memory or the like in which the stored contents are not lost even if power is not supplied, and can store operation setting contents, the number of operations, and the like.

  The position detection means (rotation detection means) 21 detects the position of the rotor of the motor 5 and outputs three pulses during one rotation of the rotary drum 1 due to the rotation of the rotor (in this embodiment, Since the rotation speed of the rotary drum 1 and the rotation speed of the motor 5 are the same, three pulses are output while the motor 5 rotates once), and the rotation of the motor 5 can be detected by this output pulse. It can function as a rotation detecting means that detects the rotation state of the rotary drum 1 or the motor 5.

  The control means 15 is adapted to a special operation mode for repair inspection or factory inspection according to the setting state of the input setting means 16 (for example, the power-on switch 16g is turned on while the washing time setting switch 16a is turned on). The special operation mode is set.

  The special operation mode for repair inspection includes an operation mode for confirming that the motor 5, the water supply valve 12, the drain valve 11, etc. are forcibly driven to operate normally. It has a function of adjusting the normal operating state (for example, a detection level of an unbalanced state to be described later) in consideration of variations and variations in mass production.

  As shown in FIG. 4, the control means 15 sequentially performs washing, rinsing, and dehydration processes to control the operation as a washing machine.

  In the washing process, first, a water supply process is performed. The control unit 15 drives the water supply valve 12 through the switching unit 20 to supply tap water into the water receiving tank 3 from a water supply hose 33 connected to the water supply unit 32. At this time, the tap water supplied from the water supply hose 33 is supplied into the water receiving tank 3 while being mixed with the detergent supplied to the water supply unit 32. The amount of water supplied into the water receiving tank 3 is the amount of water corresponding to the amount of laundry (the method for detecting the amount of cloth is not described), and the water level supplied to the water receiving tank 3 is It is detected by a water level detecting means (not shown) provided in the water receiving tank 3 and supplied to a specified water level. The water supplied into the water receiving tub 3 is absorbed by the laundry housed in the rotating drum 1 through the through holes 2 formed in the rotating drum 1, and the water level in the water receiving tub 3 is lowered. Water absorption is carried out in the same way.

  After the water supply process, the washing process is started. The control means 15 drives the motor 5 to reverse the rotating drum 1 forward and backward. That is, the rotary drum 1 is rotated at a predetermined rotation speed in the forward direction for a predetermined time, then stopped for a predetermined time, and then driven in the reverse direction for a predetermined time, and then stopped for a predetermined time. A first agitation control operation is performed in which the control operation is set as one cycle and the required time is repeated. The predetermined rotational speed is a height at which the laundry hooked by the stirring protrusions 6 provided at a plurality of positions on the inner peripheral surface of the rotating drum 1 is lifted in the rotating direction by the rotation of the rotating drum 1 and the weight of the laundry is greater than the centrifugal force. It is the rotational speed which shows the behavior which falls from a position. When the lifted laundry falls, the laundry has a tapping washing action, and by repeating this, a washing action is performed to remove dirt from the laundry that absorbs water containing detergent.

  When the washing process is completed as described above, a rinsing process is performed. In the rinsing process, the control means 15 drives the drain valve 11 to execute a draining process for discharging dirty washing water in the water receiving tub 3 to the outside through the drain pipe 10, and the control means 15 further includes a motor. A dehydration step is performed in which the washing water contained in the laundry is dehydrated by rotating 5 at a high speed.

  After the dehydration process for a predetermined time is performed, a brake process for braking the rotation of the rotary drum 1 is executed, and then the drain valve 11 is closed and the water supply valve 12 is opened to supply new tap water into the water receiving tank 3. The rinsing process is started. Also in the rinsing step, the rotating drum 1 is agitated so as to be reversed in the forward and reverse directions, and rinsing is performed.

  After the washing process, a rinsing process is performed, and then a dehydration process is performed. The dehydrating operation during the rinsing process and the dehydrating process is performed as a dehydrating operation in which the rotating drum 1 is rotated at a high speed after draining to dehydrate the laundry. In order to ensure the dehydration operation in each stroke, the laundry is evenly attached to the inner peripheral wall of the rotary drum 1 and the water contained in the laundry receives water from the through holes 2 by centrifugal force. It is necessary to escape into the tank 3. When the laundry is in a state of being biased in the rotating drum 1, not only is the dehydration not smoothly performed, but also vibration is generated in the rotating drum 1 due to the bias in the position of the center of gravity. Hereinafter, the dehydration operation in the dehydration step will be described with reference to FIG.

  As shown in FIG. 5, when the rotational speed of the rotary drum 1 is raised to 1000 r / min, the switching that configures the inverter 23 so that the rotational speed of the rotary drum 1 becomes 100 r / min between times t1 and t2. The device is operated while controlling the control amount of the element, and the bias (unbalanced state) of the laundry in the rotating drum 1 is detected based on the rotational speed fluctuation of the rotating drum 1 at this time. When the rotary drum 1 is controlled to 100 r / min, the fluctuation of the rotational speed behaves as shown in FIG. 6 according to the biased state of the laundry in the rotary drum 1.

  When the laundry in the rotating drum 1 is attached to the inner peripheral wall in a well-balanced state (unbalanced small state), the rotational speed fluctuation is small (for example, 5 r / min or less) as shown in FIG. On the other hand, when the laundry in the rotating drum 1 is not evenly adhered to the inner peripheral wall (large unbalance state), the rotational speed fluctuation is large (for example, 15 r / min) as shown in FIG. Become.

  As described above, when the laundry in the rotating drum 1 is in a small unbalanced state, vibrations at the time of dehydration start-up or after the start-up are small, but in a large unbalance state, vibrations and noises are large. Therefore, it is detected whether or not the laundry in the rotating drum 1 is evenly attached to the inner peripheral wall due to the rotational speed fluctuation during this period (for example, unbalanced if the rotational speed fluctuation is 10 r / min or more), and then dehydration is started. It is determined whether or not it can be raised.

  If it is determined that the unbalance state is large, the dehydrating operation is interrupted and the unbalance state of the laundry is corrected. As a correction method, after the dehydration is interrupted, the rotating drum 1 is reversed to the left and right by driving the motor 5 (approximately 30 seconds at approximately 40 r / min, approximately reversed for about 30 seconds). The starting operation is performed from the beginning so that the laundry in the rotating drum 1 is evenly adhered to the inner peripheral wall.

  Whether the laundry in the rotating drum 1 is evenly attached to the inner peripheral wall is determined by fluctuations in the rotational speed. Depending on how this detection level (for example, 10 r / min) is set, during the dehydrating operation Vibration and noise are determined (while the rotating drum 1 is raised to 1000 r / min and after it is raised). On the other hand, the vibration and noise are greatly affected by the strength of the floor on which the product is installed, in addition to the structure unique to the product and the balance of the laundry in the rotating drum 1. Even in the environment where the product is installed, the magnitude of vibration / noise changes even if the balance of the laundry in the rotating drum 1 is the same.

  Further, how the laundry is evenly attached to the inner peripheral wall in the rotating drum 1 is determined by the starting speed at the time of dehydration starting and the cloth unraveling operation by inverting the rotating drum 1. It depends greatly on the amount and the quality of the cloth, and the laundry is not necessarily applied evenly to the inner peripheral wall of the rotating drum 1 under all conditions.

  Therefore, even if some vibration is sacrificed, if the dehydrating operation is not performed, the dehydrating operation cannot be performed depending on the condition of the laundry, and the basic function as the washing machine is impaired. Therefore, the operation of applying the laundry evenly as much as possible is repeated, but there is a problem that it must finally be started up at a certain level, so it is very difficult to set the detection level There are challenges. When the detection level is lowered (for example, set to 8 r / min), the correction operation is repeated and the dehydration time becomes longer. On the other hand, when the detection level is raised (for example, set to 10 r / min), the laundry becomes slightly unbalanced. Even if it is, the vibration and noise will increase when dehydration is started.

  The following two points can be considered as methods for solving this problem.

  First, since the magnitude of vibration during dehydration changes depending on the installation environment of the washing machine, it is possible to set the detection level of the rotational speed fluctuation that determines the unbalanced state accordingly (for repair inspection). Set in special operation mode, and then perform dehydration operation at that detection level). Under conditions where the vibration during dehydration operation will increase due to the influence of the floor surface strength, etc., the detection level is lowered to, for example, 8 r / min, and the laundry in the rotating drum 1 is more evenly stuck. Only perform dehydration operation (start-up operation). Thereby, the vibration at the time of spin-drying | dehydration can be reduced and the spin-drying | dehydration operation according to the installation environment of the washing machine can be performed.

  The second point is to set the vibration level according to the use conditions or preferences of the user. As described above, depending on the amount of laundry and the quality of the clothes, clothing does not stick to the inner peripheral wall of the rotating drum 1 evenly, and therefore, the correction operation may be repeated many times and the dehydration operation may not be achieved. . Therefore, it is a fact that some users desire to perform the dehydration operation quickly even at the expense of some vibration. Further, as a reverse request, there is also a request to reduce the vibration no matter how many correction operations are performed. Therefore, a detection level of rotation fluctuation for determining the unbalanced state is set according to the user's request. Even if the vibration is sacrificed, when the dehydration operation is to be corrected quickly with a small number of corrections, the detection level is increased to, for example, 12 r / min, and when importance is attached to the vibration, the detection level is set to, for example, 8 r / min. And make a corrective action until the laundry is evenly adhered to reduce vibration during dehydration.

  However, assuming the installation environment and the user's usage conditions in advance, the detection level can be changed only within that range, and even if the detection level is changed, the vibration during dehydration becomes very large and used. It is set so as not to impair the functional function of the washing machine, such as when the person feels dangerous or when the dehydration operation does not proceed at all.

  Similarly, when the rotating drum 1 is operated so that the rotational speed of the rotating drum 1 becomes 200 r / min between the times t <b> 3 and t <b> 4, the state in which the laundry in the rotating drum 1 is attached to the inner peripheral wall is also changed by the rotational speed fluctuation. Can be detected. Since the state of the laundry in the rotating drum 1 may be changed at the stage of increasing the rotational speed, it is possible to prevent vibration and noise during dehydration by detecting in two stages. The detection level at this time is set according to the detection level set at the time of detection at a rotational speed of 100 r / min. That is, when dehydration is started with a high probability, it is necessary to link the detection levels of 100 r / min and 200 r / min to a detection level that rises, and suppress dehydration vibration as much as possible. This is because it is necessary to change each detection level so as not to rise. In this embodiment, the two detection levels are changed in conjunction with each other. However, for example, the state of the laundry in the rotary drum 1 is made of another sensor (for example, a semiconductor element, and the vibration state is determined from the acceleration. Even when detection is performed by a sensor to be detected, detection by a motor current, or the like, the dehydration operation state can be set from the outside by changing a plurality of detection means in conjunction with each other.

  The operation of the above configuration will be described with reference to FIGS. The operation starts at step 60 in FIG. 7, and the power-on switch 16g is turned on at step 61. At this time, if the washing switch (washing time setting switch) 16a is turned on at step 62, the process proceeds to step 63. The operation mode for correction inspection is set.

  The operation mode for repair inspection includes an operation mode for forcibly driving actuators such as the motor 5, the water supply valve 12, and the drain valve 11 to confirm that they are operating normally. It has a function of adjusting a normal operation state in consideration of mass production variation (for example, a detection level of an unbalance state described later). In step 64, the setting in the operation mode for repair inspection is switched by the rinsing switch (rinsing frequency setting switch) 16b. There is a setting for driving the motor 5 to invert the rotating drum 1 to the left and right. In step 65, it is determined whether it is a setting mode for detecting a rotational speed fluctuation level for determining an unbalanced state at the start of dehydration. In 66, the actual detection level is switched and set by a dehydration switch (dehydration time setting switch) 16c.

  As the setting level, for example, three ranks can be changed, and the initial state setting (a) at the time of factory production (for example, the detection level is 10 r / min) and the setting for increasing the detection level (b) (for example, the detection level) 12r / min) and setting (c) for decreasing the detection level (for example, the detection level is 8r / min).

  The setting state at this time is displayed on the display means 17 as shown in FIGS. 8A, 8B, and 8C so that the setting state can be distinguished. At this time, when the start switch (start / pause switch) 16g is pressed, the contents set in step 66 are stored in the storage means 31, and the next operation is performed based on this setting. . In step 67, it is determined whether the start switch 16g has been pressed. If it has been pressed, the set contents are stored in the storage means 31 in step 68.

  If it is determined in step 62 that the washing switch 16a has not been pressed, the routine proceeds to step 69 where a normal washing operation is performed. At this time, in the operation mode for correction inspection, if the rotation fluctuation detection level for determining the unbalanced state is set, the dehydration operation is performed in the set state, and if it is not set, it is set during factory production. The dehydration operation is performed with the initial setting.

  Next, the operation during the dehydration operation will be described with reference to the flowchart of FIG. In step 70, the operation is started, and in step 71, the power-on switch 16g is turned on. If the washing switch (washing time setting switch) 16a is not turned on in step 72, the process proceeds to step 73. Normal washing operation is performed. In step 73, the course to be driven is set by the input setting means 16, and it is determined in step 74 whether the start switch 16g is pressed. If the start switch 16g is pressed, the process proceeds to step 75 and the washing operation is started. To do.

  Thereafter, in step 76, as shown in FIG. 4, washing, rinsing, and dehydration processes are sequentially performed. If it is determined in step 77 that the order is to proceed to the dehydration process, the dehydration operation is started in step 78. As shown in FIG. 5, the starting operation is performed so that the rotational speed of the rotary drum 1 is 1000 r / min.

  In step 79, as described above, at the time of dehydration start-up, it is determined whether the laundry in the rotating drum is attached to the inner peripheral wall with good balance between time t1 to t2 and time t3 to t4. Perform detection. When the rotating drum 1 is controlled at 100 r / min and 200 r / min, the rotation speed fluctuation is detected to determine whether the laundry is evenly stuck in the rotating drum 1. Judgment is made in comparison with the detection level set in the operation mode for repair inspection (described above if the detection level can be set in three stages).

  As the first stage detection, detection is performed when the rotating drum 1 is 100 r / min, and when the fluctuation of the rotation speed is smaller than the detection level, the rotation is started up to 200 r / min because it is evenly stuck. Next, as the detection at the second stage, the same detection is performed at 200 r / min. Even in this detection, if it is determined that the fluctuation of the rotation speed is smaller than the detection level, the rotation is started until the rotation speed of dehydration reaches 1000 r / min. At this time, the detection levels of 100 r / min and 200 r / min are in the state set in the operation mode for repair inspection, and as described above, when it is desired to start dehydration even at the expense of some vibrations, In order to increase the two detection levels in conjunction with each other and increase the vibration, and to reduce the vibration during dehydration, the two detection levels are decreased in conjunction.

  If no unbalanced state is detected in step 80, the process proceeds to step 81 and is controlled to 1000 r / min in order to set the dehydration rotation speed to a high speed state. On the other hand, if it is detected at step 80 that the state is an unbalanced state, the dehydration operation is stopped and the routine proceeds to step 82. Step 82 is an operation for correcting the unbalanced state of the laundry in the rotary drum 1.

  In step 82, the unbalanced state CT for counting the number of unbalance correction operations in this dehydration operation is counted up. In step 83, it is determined whether or not the number of times of unbalance correction is equal to or greater than a predetermined number (for example, six times). Then, the abnormal state is displayed by the display means 17 or the like. If it is less than the predetermined number of times, although not shown here, by rotating the rotating drum 1, the operation of changing the state of the laundry in the rotating drum 1 is performed, and the process returns to step 78 again to perform the dehydrating operation. Do it from the beginning.

  In this way, according to the setting state of the washing machine and the user's request, the detection level of the rotational fluctuation for determining the unbalanced state can be changed by the user after shipping from the factory, and so on. In this change, in the case of detection consisting of a plurality of detections, the detection level can be set in conjunction with each other, so that the operation state of the product can be set with a simple operation. In addition, if each detection is set individually, it will be difficult to judge what the product behavior will be for the product, but it will be more important for normal operation and vibration to start dehydration more even with large vibration. By making it possible to set a level such that dehydration does not start up easily, it becomes possible to operate as a washing machine that satisfies the user.

  In the first embodiment, detection of an unbalanced state during dehydration is described. However, various sensor functions (for example, a weight sensor that measures the amount of laundry) are also detected by the same setting method. Etc., and the same effect can be obtained.

  As described above, in the present embodiment, the control unit 15 unbalances in the rotating drum detected by the plurality of unbalance detection units according to the setting state set by specially operating the input setting unit 16. By changing the state in conjunction with the above, it is possible to adjust the vibration state during the dehydration operation with a simple operation, although it is in the environment or the range of use conditions where the washing machine is assumed in advance. Moreover, the dehydration operation according to the user's request can be realized.

  The control unit 15 stores the setting state set by specially operating the input setting unit 16 in the storage unit 31, and after storing the setting state by the one-end storage unit 31, the washing operation is performed by the storage unit 31. Since the operation is performed according to the stored setting state, once the operation state is set by the user or the like, the washing operation is always performed under the set conditions after the setting, so it is necessary to set each time the operation is performed. Can be saved, and the operability can be improved.

  Further, the control means 15 performs the special operation by the input setting means 16 in the same manner as the operation method for setting the operation for performing the repair inspection so that the repair person can easily set the operation state. At the same time, it is possible to prevent the user or the like from erroneously setting it to another operating state by mistake.

  As described above, the washing machine according to the present invention is able to set the operation content from the outside according to the circumstances or the range of use conditions in which the washing machine assumed in advance is used, and dewatering. It is useful as a washing machine that can reduce vibration and noise during operation.

FIG. 2 is a partial block diagram of the washing machine according to the first embodiment of the present invention. Longitudinal section of the washing machine Enlarged front view of input setting means and display means of the washing machine Timing chart for washing operation of the washing machine Time chart of dehydration process of the washing machine Correlation diagram showing unbalanced state due to rotation speed fluctuation of the washing machine Setting flowchart of the washing machine (A) The figure which shows the display at the time of the factory shipment of the unbalance detection setting of the washing machine (b) The figure which shows the detection large display of the unbalance detection setting of the washing machine (c) The imbalance detection setting of the washing machine Showing the display of small detection Operation flowchart of the washing machine Sectional view of a conventional drum-type washing machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating drum 3 Water receiving tank 5 Motor 9 Washing machine main body 15 Control means 16 Input setting means 21 Position detection means (rotation speed detection means)

Claims (3)

A rotating drum having a rotating shaft in a substantially horizontal direction or a direction inclined from the horizontal direction, a water receiving tub containing the rotating drum elastically supported in a washing machine body, a motor for rotationally driving the rotating drum, and the drum Alternatively, a rotation detection means for detecting the rotation state of the motor and a plurality of unbalances for detecting that the clothes in the drum are biased and unbalanced by the rotation state detected by the rotation detection means during the dehydration operation. The control means includes a control means for controlling the driving of the motor and a series of control means, and an input setting means for setting an operation course, and the control means is set by specially operating the input setting means. The unbalanced state detected by the plurality of unbalance detecting means is changed in conjunction with each other according to the set state. Washing machine. Storage means for storing input settings and the like, and the control means stores the setting state set by specially operating the input setting means in the storage means, and once the setting state is stored by the storage means, The washing machine according to claim 1, wherein the operation is performed according to the set state stored by the storage means. 2. The washing machine according to claim 1, wherein the control means is the same as the operation method for setting a driving operation for performing the special operation by the input setting means for repair inspection.

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