JP4364866B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine capable of adjusting a washing state according to, for example, the material of laundry.

As a factor to determine the washing effect of the laundry in the washing process of the drum type washing machine and the washing effect due to the degree of cloth damage, (A) Friction force due to rubbing between the laundry and the spin basket and friction due to rubbing between the laundry Force, (B) impact force and frictional force when the laundry collides with the spin basket, water, lifter, etc., (C) impact force when the laundry lifted by the lifter falls and collides with the spin basket In addition to mechanical power such as fir washing and tapping, etc., there are chemical powers such as (D) water temperature, water quality, amount of detergent, and nature of the detergent.
Here, there has been proposed a washing machine in which the lifting effect of the lifter is increased by gradually increasing the protruding amount of the lifter from the opening end side to the other end side of the spin basket (see, for example, Patent Documents 1 and 2). ).

By the way, for washing machines, when you want to remove dirt from the laundry efficiently, or when you want to wash in a state where the degree of cloth damage is low, the desired cleaning effect or the laundry cloth depending on the laundry It is desired to make the washing state variable so as to obtain a washing effect such as the degree of damage. As a method for controlling such a washing state, controlling the rotation speed of the spin basket can be mentioned. For example, when the rotational speed is low, even if the spin basket is rotated, the laundry is not scraped up by the lifter, and the laundry stays at the bottom of the spin basket, so that the cleaning effect by the scrub washing is increased. In addition, when the rotational speed is medium, the laundry lifted up by the lifter falls from the upper part of the spin basket and collides with the lower part of the spin basket, so that the washing effect by tapping is increased. When the rotational speed is high, the laundry is almost stuck to the spin basket, thereby reducing the cleaning effect of the fir washing and tapping washing.
JP 2005-6785 A JP 2002-315985 A

  However, in the conventional washing machine, when changing the cleaning effect by mechanical force, it is performed only by controlling the rotation speed of the spin basket. However, it is desired to expand the controllable range of the washing state by mechanical force. .

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a washing machine with a wider control range of a washing state by mechanical force.

  The present invention employs the following configuration in order to solve the above problems. That is, the washing machine of the present invention contains a laundry, and a spin basket that rotates about the axis of the rotation shaft, a protrusion that protrudes radially from the inner peripheral surface of the spin basket, and the laundry A washing condition setting unit that sets the washing condition, and a protrusion control unit that adjusts a protruding amount of the protruding part based on the set washing condition.

In this invention, since the washing effect by the mechanical force is adjusted by changing the protruding amount of the protruding portion, the washing state can be controlled more precisely by the mechanical force and the controllable range can be expanded.
That is, when it is desired to reduce the degree of cloth damage, the cleaning effect by the mechanical force generated by the contact with the protrusion is reduced by reducing the protrusion amount of the protrusion and reducing the contact area between the laundry and the protrusion. To do. Thereby, the cleaning effect by the mechanical force can be reduced as compared with the adjustment of the cleaning effect by the mechanical force only by the rotation speed of the spin basket. Therefore, the degree of cloth damage can be further reduced. Further, when the amount of laundry is large, the amount of protrusion of the protrusion is reduced to increase the space in the spin basket. Thereby, it becomes easy to stir the laundry, and the laundry can be washed uniformly.
From the above, it is possible to improve the washing efficiency by expanding the variable range of the washing state by the mechanical force and performing an appropriate washing process according to the laundry.

  According to the washing machine of the present invention, since the cleaning effect by the mechanical force is adjusted by changing the protruding amount of the protruding portion, the control of the washing state by the mechanical force can be set more finely and the controllable range can be expanded. For this reason, an appropriate washing process can be performed according to the laundry, and washing efficiency is improved.

Hereinafter, an embodiment of a washing machine according to the present invention will be described with reference to the drawings.
The washing machine 1 in this embodiment is a drum type washing machine capable of performing a washing process, a dehydration process, and a drying process, for example. As shown in FIGS. 1 and 2, the washing machine 1 includes a housing 2, a tab 3 disposed inside the housing 2, a spin basket 4 disposed inside the tab 3, and a spin basket. A basket rotation motor 5 that rotates the shaft 4 around the axis of rotation A, a cloth amount detection means 6 that detects the amount of laundry contained in the spin basket 4, and hot air is supplied into the spin basket 4. A drying means 7, a pouring / draining means 8 for pouring / draining the spin basket 4, and a controller 9 for controlling them.

The tab 3 has a bottomed cylindrical shape, and is arranged so as to be inclined so that the central axis thereof is substantially parallel to the horizontal plane and the opening end faces slightly upward. Further, it is suspended and supported by a spring 11 and a damper 12 inside the housing 2. The open end of the tab 3 can be opened and closed by a door 13 provided on the front surface of the housing 2.
In addition, a bearing 14 is provided at the rear end of the tab 3 to rotatably support a later-described main shaft 21 of the spin basket 4 in a cantilever state.

The spin basket 4 has a bottomed cylindrical shape like the tab 3, and is arranged so that the rotation axis A that is the central axis thereof coincides with the central axis of the tab 3. The tab 3 is provided with a main shaft 21 at its rear end so that the spin basket 4 can be rotated around the axis of the rotation axis A. The main shaft 21 is supported by a bearing 14 of the tab 3.
Further, the spin basket 4 is formed with a plurality of water passage holes 22 which are through-holes communicating the inside of the spin basket 4 with the tab 3. The spin basket 4 supplies the water poured into the tub 3 into the spin basket 4 through the water passage hole 22, and the water dehydrated from the laundry at the time of dehydration is scattered from the spin basket 4 to the tub 3. It is the composition which makes it.
Furthermore, lifters (protruding portions) 23 that protrude inward in the radial direction of the spin basket 4 are disposed at four locations at equal intervals in the circumferential direction on the inner peripheral surface of the spin basket 4.

Each of the lifters 23 is a ridge formed so as to be parallel to the rotation axis A from the front part to the rear part of the spin basket 4, and is configured to scoop up the laundry as the spin basket 4 rotates. Yes.
Further, as shown in FIGS. 3A and 3B, each of the lifters 23 rotates and rotates a resin film 31 whose end side is fixed to the inner peripheral surface of the spin basket 4 and can be expanded and contracted. A support part (moving member) 32 that is stretched toward the axis A, a lock part 33 that is provided on the outer peripheral surface of the spin basket 4 and restricts the movement of the support part 32 in the radial direction of the spin basket 4, and a lock part 33 The lock release part 34 which cancels | releases the restraint state by is provided.

  The resin film 31 has a hollow ridge shape that protrudes inward in the radial direction of the spin basket 4 when supported by the support portion 32 inward in the radial direction of the spin basket 4. .

The support portion 32 is a shaft-like member, and is inserted into a through hole (not shown) provided in the spin basket 4 so as to be movable in the radial direction of the spin basket 4. And the flange part 32A, 32B larger diameter than the said through-hole is provided in the radial direction inner end and the radial direction other end of the spin basket 4 of the support part 32, respectively.
The flange portion 32B is located outside the spin basket 4, and an engaging groove portion 32C that engages with an engaging convex portion 33A (described later) of the lock portion 33 is formed on the peripheral surface thereof.

In addition, a shape memory spring (driving means) 36 that moves the support portion 32 in the radial direction of the spin basket 4 is wound around the support portion 32.
The shape memory spring 36 is made of, for example, a Ti—Ni alloy, and is alloyed so that its shape memory transformation point is sufficiently away from the water temperature in the spin basket 4 in the washing process. The shape memory spring 36 is energized and controlled by an energization control unit (projection amount control unit) 62 (to be described later) of the control unit 9, and is formed to contract when heated to a predetermined temperature by Joule heat. .
Accordingly, when the shape memory spring 36 is energized and heated to contract, the support portion 32 is configured so that the other end of the support portion 32 is directed outwardly from the spin basket 4 in the radial direction from the through hole, as shown in FIG. Protruding. Thereby, each protrusion amount of the lifter 23 decreases. On the other hand, as shown in FIG. 3B, when the current heating is stopped and the shape memory spring 36 is cooled and extended, the support portion 32 protrudes inward in the radial direction of the spin basket 4 from the through hole. . Thereby, each protrusion amount of the lifter 23 increases.

The lock portion 33 has a disc shape and is movable along the outer peripheral surface of the spin basket 4 so as to approach and separate from the support portion 32. An engagement convex portion 33 </ b> A that engages with the engagement groove portion 32 </ b> C is formed on the surface of the lock portion 33 facing the support portion 32.
The unlocking portion 34 includes a shaft portion 37 having one end coupled to the lock portion 33, a flange portion 38 that is fixed to the outer peripheral surface of the spin basket 4 and that allows the shaft portion 37 to be movably inserted toward the support portion 32, The shape memory spring 39 is wound around the shaft portion 37 and has one end connected to the lock portion 33.
The shaft portion 37 is inserted into a through hole (not shown) provided in the flange portion 38 and is movable with respect to the flange portion 38 along the outer peripheral surface of the spin basket 4.

Similarly to the shape memory spring 36 described above, the shape memory spring 39 is energized and controlled by an energization control unit 62 (to be described later) of the control unit 9 and is formed to contract when heated to a predetermined temperature by Joule heat. ing. The shape memory spring 39 is formed so as to contract at a slightly lower temperature than the shape memory spring 36.
Therefore, when the shape memory spring 39 is contracted by energization and heating, as shown in FIG. 3A, the lock portion 33 is separated from the support portion 32 and the engagement convex portion 33A and the engagement groove portion 32C are engaged. The state is released. On the other hand, as shown in FIG. 3B, when the energization heating to the shape memory spring 39 is stopped and extended, the lock portion 33 comes close to the support portion 32 and the engagement convex portion 33A and the engagement groove portion 32C. Engage.
From the above, the protrusion amount of the lifter 23 can be adjusted in two stages, when the shape memory springs 36 and 39 are in the extended state and when in the contracted state.

  As shown in FIG. 1, the basket rotation motor 5 is a DC motor, for example, and is configured to rotate the main shaft 21 around its axis, and a basket rotation control unit 61 described later of the control unit 9. The rotation is controlled by.

  The cloth amount detection means 6 detects the cloth amount of the laundry in the spin basket 4 using the fact that the q-axis current of the current flowing in the basket rotating motor 5 corresponds to the torque of the spin basket 4. It is the composition to do. Then, as shown in FIG. 2, the cloth amount detection means 6 calculates a cloth amount from the torque calculation unit 41 that calculates torque from the current flowing in the basket rotation motor 5, and the torque calculation amount by the torque calculation unit 41. A cloth amount calculation unit 42 is provided.

The torque calculation unit 41 detects a current flowing in the basket rotation motor 5 and converts a three-phase to two-phase converter 43 that performs a three-phase to two-phase conversion, and a current that is two-phase converted by the three-phase to two-phase converter 43. Furthermore, a dq converter 44 that performs dq conversion and a q axis current detection unit 45 that detects the torque of the spin basket 4 from the q axis current that has been dq converted by the dq converter 44 are provided.
The cloth amount calculation unit 42 is configured to detect the cloth amount and output the detection result to an energization control unit 62 described later of the control unit 9.

  As shown in FIG. 1, the drying means 7 is provided above the tab 3 and includes a heater 51, a fan 52, and a fan rotation motor 53 that rotates the fan 52. To form hot air. Further, the drying means 7 includes a duct 54 having one end facing the rear end of the spin basket 4 and the other end facing the front end of the spin basket 4, and the formed hot air flows from the rear end of the spin basket 4 to the spin basket 4. 4 is fed into the duct 54 from the front end of the spin basket 4.

The drainage means 8 includes a water injection pipe 55 for injecting water into the tab 3, a water injection valve 56 provided in the water injection pipe 55, a drain pipe 57 for draining from the tab 3, and a drainage valve provided in the drain pipe 57. 58.
The water injection pipe 55 connects a water pipe provided outside the washing machine 1 and the rear end of the tab 3, and the spin basket 4 through the water passage hole 22 formed in the tab 3 and the spin basket 4. Supply water inside.
One end of the drain pipe 57 is connected to the lower portion of the tab 3, and drains the water in the spin basket 4 through the tab 3 and the water passage hole 22.

The control unit 9 includes a basket rotation control unit 61 that controls the rotation of the basket rotation motor 5, an energization control unit 62 that controls energization of the shape memory springs 36 and 39, and warm air in the spin basket 4 during the drying process. Is provided with a drying control unit 63 that circulates water and a pouring / draining control unit 64 that controls pouring / draining.
In addition, an operation panel 65 is provided on the upper portion of the housing 2 so that a washing process, a dehydrating process, and a drying process can be selected in accordance with the material of the laundry. This operation panel 65 and the cloth amount detecting means 6 described above constitute a washing condition setting unit 66.

Next, a laundry washing method by the washing machine 1 having such a configuration will be described.
First, the door 13 is opened, the laundry is put into the spin basket 4, and the door 13 is closed. Then, the washing process is started by performing a predetermined operation on the operation panel 65.
This is because the water injection control unit 64 opens the water injection valve 56 to supply water into the spin basket 4 from the water injection pipe 55 and closes the water injection valve 56 after a predetermined amount of water injection to stop water supply. To do. Then, the basket rotation control unit 61 rotates the spin basket 4 around the rotation axis A so as to have a predetermined rotational movement. A detergent is appropriately supplied into the spin basket 4. Here, the amount of protrusion of the lifter 23 is appropriately adjusted according to the operation by the operation panel 65 and the amount of the laundry that has been thrown in, so that an optimum washing state according to the laundry is obtained. A method for controlling the protrusion amount of the lifter 23 will be described later.

  After completion of the predetermined rotational movement, the pouring / draining control unit 64 opens the drainage valve 58 and drains the water in the spin basket 4 from the drainage pipe 57, and then closes the drainage valve 58. Then, after a rotational motion is performed in a state where water is supplied into the spin basket 4 again, the water in the spin basket 4 is drained to perform a rinsing process.

  Subsequently, a dehydration process for draining water contained in the laundry is performed. This causes the basket rotation control unit 61 to rotate the spin basket 4 around the rotation axis A so as to have a predetermined rotation speed. Moreover, the pouring / draining control unit 64 keeps the drainage valve 58 open. Thereby, the water contained in the laundry is scattered to the tab 3 through the water passage hole 22 by the centrifugal force generated by the rotation of the spin basket 4. Then, the water scattered on the tab 3 is drained through the drain pipe 57.

And the drying process which dries laundry is performed. This is because the drying control unit 63 rotates the fan 52 so as to reach a predetermined rotational speed, and the drying control unit 63 heats the inside of the duct 54 by the heater 51. As a result, warm air is sent out from the duct 54 into the spin basket 4, and the hot air heats the laundry and takes away moisture contained in the laundry, and is sent again into the duct 54 from the front end of the spin basket 4. . At this time, the basket rotation control unit 61 appropriately rotates the spin basket 4 around the rotation axis A, so that the laundry is efficiently dried by the drying means 7. After completion of the drying process, the door 13 is opened and the laundry in the spin basket 4 is collected.
As described above, the laundry is washed by the washing machine 1.

Next, the control method of the protrusion amount of the lifter 23 in the washing process will be described in detail.
First, at the start of the washing process, the material of the laundry thrown into the spin basket 4 is set on the operation panel 65. Here, the energization control unit 62 determines whether or not the material of the inputted laundry is a material suitable for delicate washing (step ST1 shown in FIG. 4).
In step ST1, when it is determined that the material of the loaded laundry is a material suitable for delicate washing, the energization control unit 62 energizes and heats the shape memory springs 36 and 39 to project the lifter 23. The amount is decreased (step ST2 shown in FIG. 4).

  On the other hand, if it is determined in step ST1 that the material is not suitable for delicate washing, the cloth amount detecting means 6 detects the amount of the laundry loaded, and the energization control unit 62 detects the detection result. Is determined to exceed a predetermined threshold (step ST3 shown in FIG. 4). First, the basket rotating motor 5 rotates the spin basket 4 about the axis of rotation A. Then, the torque calculation unit 41 calculates the torque of the spin basket 4 from the current flowing in the basket rotation motor 5. Here, the calculation is performed using the fact that the q-axis current of the current flowing in the basket rotation motor 5 corresponds to the torque of the spin basket 4. That is, after the three-phase / two-phase converter 43 detects the current flowing in the basket rotating motor 5 and performs three-phase / two-phase conversion, and the dq converter 44 further performs dq conversion, the q-axis current detection unit 45 Detects the torque of the spin basket 4 from the d-q converted q-axis current. Thereafter, the cloth amount calculation unit 42 calculates the amount of clothes of the laundry from the torque of the spin basket 4 and outputs the result to the energization control unit 62.

In step ST3, when it is determined that the amount of cloth fed exceeds a predetermined threshold value, the energization control unit 62 energizes and heats the shape memory springs 36 and 39 to reduce the protrusion amount of the lifter 23 (see FIG. 4). Step ST4 shown).
On the other hand, if it is determined in step ST3 that the amount of cloth is equal to or less than the predetermined threshold value, the energization control unit 62 maintains the protruding amount of the lifter 23 without performing energization heating to the shape memory springs 36 and 39. (Step ST5 shown in FIG. 4).
As described above, the protruding amount of the lifter 23 is adjusted in accordance with the laundry material and the amount of cloth. Thereafter, as described above, water is supplied into the spin basket 4 and the spin basket 4 is rotated to perform a washing process.

Here, FIG. 5 shows the flaw washing effect and the knocking washing effect on the laundry due to the rotation speed of the spin basket 4 and the height of the lifter 23. FIG. 5 shows a small amount of washing in which the amount of laundry is less than a threshold.
In FIG. 5, the low speed indicates a state in which the laundry is not picked up by the rotation of the spin basket 4 and the laundry remains at the bottom of the spin basket 4 when the lifter 23 protrudes. ing. Further, the medium speed indicates a state in which the laundry is lifted up by the rotation of the spin basket 4 when the lifter 23 protrudes, falls at the top of the spin basket 4 and collides with the bottom of the spin basket 4. ing. Furthermore, the high speed indicates a state in which the laundry is almost stuck to the spin basket 4 without dropping even at the upper part of the spin basket 4 when the lifter 23 is in a protruding state.
And the number in FIG. 5 has shown the degree of the effect by a rice bran wash or a tapping wash, and has shown that the washing | cleaning effect and cloth damage degree are so high that a numerical value is high.

  As shown in FIG. 5, when the protruding amount of the lifter 23 is not variable, the minimum value of the total effect by the rice bran washing and the tapping washing is 2 even if the washing effect is controlled only by the rotation speed of the spin basket 4. On the other hand, the minimum value of the total effect can be set to 1 by making the protrusion amount of the lifter 23 variable. This is because the laundry is not picked up even if the spin basket 4 is rotated by reducing the protruding amount of the lifter 23, and the tapping effect is reduced.

  When the energization control unit 62 determines in step ST3 that the laundry amount exceeds the threshold, the protrusion amount of the lifter 23 is decreased in step ST4. This is because even if the protrusion amount of the lifter 23 is reduced, the laundry itself that has been put in a large amount is gathered and moves upward along the inner periphery of the spin basket 4. Thus, by reducing the protrusion amount of the lifter 23, the space in the spin basket 23 is expanded, the stirring effect of the laundry is increased, and the washing efficiency is improved.

According to the washing machine 1 configured as described above, since the cleaning effect by the mechanical force is adjusted by changing the protruding amount of the lifter 23, the control of the washing state by the mechanical force can be set more finely and the controllable range can be set. Can be expanded. For this reason, a more appropriate washing process can be performed according to the laundry, and the washing efficiency is improved.
In addition, since the lock portion 33 restrains the movement of the support portion 32 in the radial direction of the spin basket 4, even if a large centrifugal force is applied to the support portion 32 due to the high speed rotation of the spin basket 4, the support portion 32 is Moving in the radial direction of 4 is avoided. Thereby, the protrusion state of the support part 32 is maintainable also at the time of high speed rotation in a spin-drying | dehydration process.

In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, in the above embodiment, the washing machine 1 is a drum-type washing machine in which the spin basket 4 is disposed sideways, but the spin basket 4 may be disposed vertically.
The cloth amount detecting means 6 detects the cloth amount of the laundry from the q-axis current of the basket rotating motor 5. The torque and acceleration when the basket rotating motor 5 accelerates and decelerates the spin basket 4. A configuration may be adopted in which the amount of cloth is detected by calculating the amount of inertia from the time.
Further, the amount of laundry is detected by the cloth amount detecting means 6 and the protruding amount of the lifter 23 is controlled. However, the cloth amount of the laundry is input by the operation panel 65 without providing the cloth amount detecting means 6. The protrusion amount of the lifter 23 may be controlled based on the lever input.
Further, the washing machine 1 includes the drying unit 7 and can perform the washing process, the dehydration process, and the drying process, but the drying unit 7 may be omitted.

Moreover, although all the protrusion amounts of the lifter 23 provided in four places are changed, it is good also as a structure which changes the protrusion amount of only one part in four places.
In addition, the lifter 23 can adjust the protrusion amount in two stages, that is, the extended state and the contracted state of the shape memory springs 36 and 39, but the protrusion amount may be adjusted in multiple stages. Thereby, the washing effect by fir washing and tapping can be controlled more finely.
Moreover, although the lifter 23 is provided in four places of the spin basket 4, it is not restricted to four places, 1-3 places or five places or more may be sufficient.
Further, although the lifters 23 are arranged at equal intervals in the circumferential direction on the inner peripheral surface of the spin basket 4, they may not be arranged at equal intervals in the circumferential direction.
In addition, the lifter 23 has a protrusion shape extending in the axial direction of the spin basket 4, but may have other shapes such as a pin shape.

Further, the amount of protrusion of the lifter 23 is changed by energizing and heating the shape memory springs 36 and 39. If the weight of the washing machine 1 is allowed, the amount of protrusion is changed using, for example, a motor or a worm gear. Also good.
Further, the lock portion 33 restrains the movement of the support portion 32 in the radial direction in the spin basket 4 by engaging the engagement convex portion 33A with the engagement groove portion 32C, but if the movement of the support portion 32 can be restrained. Other configurations may be used.
Further, although the lock portion 33 restricts the movement of the support basket 32 in the radial direction of the spin basket 4, the lock is locked if the support portion 32 does not move in the radial direction of the spin basket 4 even by a centrifugal force during high-speed rotation. It is good also as a structure which does not provide the part 33. FIG.

It is sectional drawing which shows the washing machine of this invention. It is a block diagram which shows the control system of the washing machine of FIG. FIG. 2 is a schematic diagram showing a stretched state of the lifter of FIG. 1. It is a flowchart which shows the control method of the protrusion amount of a lifter. It is a table | surface which shows the rice-washing effect and beat-washing effect with respect to the laundry by the rotational speed of a spin basket and the height of a lifter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing machine 4 Spin basket 5 Basket rotation motor 6 Cloth amount detection means 23 Lifter (protrusion part)
32 Supporting part (moving member)
33 Locking part 34 Unlocking part 36 Shape memory spring (driving means)
39 Shape Memory Spring 62 Energization Control Unit (Projection Amount Control Unit)
66 Washing condition setting part A Rotating shaft

Claims (7)

A spin basket that accommodates laundry and rotates about the axis of rotation;
A protrusion that protrudes radially from the inner peripheral surface of the spin basket;
A laundry condition setting unit for setting laundry conditions for the laundry;
A protrusion control unit that adjusts the protrusion amount of the protrusion based on the set washing condition ;
The protrusion includes a moving member that is movable in the radial direction of the spin basket, a driving unit that moves the moving member, a lock unit that restricts movement of the moving member, and a lock that releases the lock unit. A release part,
The projection control unit, a washing machine in which the protruding portion is characterized to Rukoto to restrain the moving member when you are in the protruding state. The rotation axis is provided to be inclined with respect to the vertical direction,
2. The washing machine according to claim 1, wherein the protruding portion constitutes a lifter that lifts up the laundry during a washing process. The protrusion includes a moving member that is movable in the radial direction of the spin basket, a driving unit that moves the moving member, a lock unit that restricts movement of the moving member, and a lock that releases the lock unit. A release part,
The washing machine according to claim 1 or 2, wherein the protrusion control unit is configured to operate the driving unit and the lock unit when changing a protrusion amount of the protrusion.   The washing machine according to claim 3, wherein the driving means is a shape memory spring.   The washing machine according to claim 3 or 4, wherein the unlocking portion is provided with a shape memory spring connected to the locking portion. A basket rotation motor for rotating the spin basket is provided, and the washing condition setting unit sets the washing condition based on a detection result of a cloth amount detection unit that detects a cloth amount of the laundry,
The cloth amount detection means calculates the cloth amount by detecting a q-axis current that is a current component corresponding to the torque of the basket rotation motor. The washing machine according to item. A spin basket that accommodates laundry and rotates about the axis of rotation;
A protrusion that protrudes radially from the inner peripheral surface of the spin basket;
A laundry condition setting unit for setting laundry conditions for the laundry;
A protrusion control unit that adjusts the protrusion amount of the protrusion based on the set washing condition;
The protruding portion adjusts the protruding amount with a shape memory alloy, and adjusts the protruding amount by deformation of the shape memory alloy by applying current to the shape memory alloy to adjust the protruding amount. Washing machine.

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