WO2020011251A1

WO2020011251A1 - Drum washing machine

Info

Publication number: WO2020011251A1
Application number: PCT/CN2019/095787
Authority: WO
Inventors: 川口智也
Original assignee: 青岛海尔洗衣机有限公司; Aqua株式会社
Priority date: 2018-07-13
Filing date: 2019-07-12
Publication date: 2020-01-16
Also published as: CN112352075A; JP7218853B2; JP2020010774A; CN112352075B

Abstract

Provided is a drum washing machine with an improved running efficiency. The drum washing machine comprises: a bottom drum-type drum (2) configured to be able to rotate about an axis extending in a horizontal direction or an inclined direction; a motor (10) for driving the rotation of the drum (2) via a driving shaft protruding from the bottom of the drum (2); an acceleration sensor (12) for detecting the acceleration of a front end of the drum (2); a threshold updating part (55) for updating a first threshold during spin-drying that is related to an output of the motor (10) for determining whether the rotation speed of the drum (2) is increased; and a spin-drying acceleration determination part (56) for determining, during spin-drying, the rotation speed of the drum (2) to be increased when the output of the motor (10) is less than the first threshold, wherein when the output of the acceleration sensor (12) is less than a second threshold, the first threshold, where the drum (2) rotates at a specified rotation speed, is larger than where the output of the acceleration sensor (12) is equal to or greater than the second threshold.

Description

滚筒洗衣机Drum washing machine

技术领域Technical field

本发明涉及一种例如进行洗涤过程、漂洗过程以及脱水过程的滚筒洗衣机。The present invention relates to a drum washing machine that performs, for example, a washing process, a rinsing process, and a dehydration process.

背景技术Background technique

一般而言，在滚筒洗衣机的在脱水过程中，首先进行平衡取得过程，通过马达使滚筒低速旋转从而利用离心力将洗涤物均匀地贴附于滚筒的内侧壁，然后，使滚筒高速旋转而进行脱水过程。Generally speaking, in the dehydration process of a drum washing machine, first, a balance obtaining process is performed. The drum is rotated at a low speed by a motor to use centrifugal force to uniformly attach the laundry to the inner wall of the drum. Then, the drum is rotated at a high speed to perform dewatering process.

但是，在低速旋转进行平衡取得过程的情况下，当洗涤物的贴附方式偏倚而导致滚筒发生不平衡时，会产生振动、噪声。而且，如果洗涤物的偏置大，则旋转时的滚筒的偏心变大，旋转需要大的转矩，因而无法开始脱水运转。However, in a case where the balance is obtained in a low-speed rotation, when the application method of the laundry is biased and the drum is unbalanced, vibration and noise may occur. Further, if the offset of the laundry is large, the eccentricity of the drum during rotation increases, and a large torque is required for the rotation, so that the dehydration operation cannot be started.

专利文献1中，记载了在洗涤过程之后，在开始平衡取得过程的同时根据感应马达的电流值求出电流最大值和电流最小值，运算检出的电流值之差，与预先设定的过度振动电流设定值进行比较，在超过该设定值的情况下输出过度振动警告。因此，能在进入高速旋转状态的脱水过程之前采取停止感应马达等措施。 Patent Document 1 describes that after the washing process, the balance obtaining process is started, and the maximum current value and the minimum current value are obtained based on the current value of the induction motor. The difference between the detected current value and the preset excess is calculated. The vibration current setting value is compared, and an excessive vibration warning is output when the setting value is exceeded. Therefore, it is possible to take measures such as stopping the induction motor before entering the dehydration process of high-speed rotation.

在内部配置有滚筒的外筒的前端部，形成有用于投取洗涤物的开口。在该开口自由开闭地装接有用于供使用者在投取洗涤物时打开的开闭门。开闭门具备压接于外筒并用于堵塞开口的密封垫。A front end portion of an outer tube in which a drum is arranged is formed with an opening for taking in laundry. An opening / closing door for freely opening and closing the user when the laundry is taken is attached to the opening. The opening and closing door is provided with a gasket which is crimped to the outer cylinder and is used to close the opening.

因此，在脱水过程中，在外筒的前端部振动的情况下，该振动会直接传递给滚筒洗衣机主体。与此相对，因为外筒的后端部处于与洗衣机主体分离的状态，所以在外筒的后端部振动的情况下，该振动不会直接传递给洗衣机主体。因此，为了防止洗衣机主体的振动、噪声，需要尽可能使外筒的前端部不振动，与此相对，即使外筒的后端部稍微振动，也几乎不会因该振动而产生洗衣机主体的振动、噪声。Therefore, when the front end portion of the outer tub vibrates during the dehydration process, the vibration is directly transmitted to the main body of the drum washing machine. On the other hand, since the rear end portion of the outer tub is separated from the washing machine main body, when the rear end portion of the outer tub vibrates, the vibration is not directly transmitted to the washing machine main body. Therefore, in order to prevent vibration and noise of the washing machine main body, it is necessary to keep the front end portion of the outer tub as little as possible. In contrast, even if the rear end portion of the outer tub vibrates slightly, the vibration of the washing machine main body is hardly generated due to the vibration. ,noise.

这里，在脱水过程中，根据滚筒内的洗涤物的偏置方式，状态会发生变化要么是外筒的前端部容易振动的状态，要么是外筒的后端部容易振动的状态。Here, in the dehydration process, the state changes depending on the bias of the laundry in the drum, either in a state where the front end portion of the outer tube is easy to vibrate or in a state where the rear end portion of the outer tube is easy to vibrate.

但是，专利文献1中，根据感应马达的电流值输出过度振动警告，但并未考虑到此时滚筒内的洗涤物的偏置方式，而使用同一个过度振动电流设定值。因此，存在如下问题：即使在脱水过程中，像例如偏心载荷位置位于滚筒靠后位置的情况那样，偏心载荷位置位于滚筒的转速上升后洗衣机主体几乎不会产生振动、噪声的位置的情况下，感应马达也会停止，因此，滚筒洗衣机的运转效率差。However, in Patent Document 1, an excessive vibration warning is output based on the current value of the induction motor, but the biasing method of the laundry in the drum at this time is not considered, and the same excessive vibration current set value is used. Therefore, there is a problem that even during the dehydration process, such as when the eccentric load position is located at the rear position of the drum, the eccentric load position is located at a position where the washing machine body hardly generates vibration or noise after the rotation speed of the drum increases, The induction motor also stops, and therefore, the operation efficiency of the drum washing machine is poor.

现有技术文献Prior art literature

专利文献Patent literature

专利文献1：日本特开平6－170080号公报Patent Document 1: Japanese Unexamined Patent Publication No. 6-170080

发明内容Summary of the invention

发明所要解决的问题Problems to be solved by the invention

本发明的目的在于，提供一种能提高运转效率的滚筒洗衣机。An object of the present invention is to provide a drum washing machine capable of improving operation efficiency.

用于解决问题的方案Solution to Problem

本发明为了解决以上的问题，采用了如下的方案。In order to solve the above problems, the present invention adopts the following solution.

即，本发明的滚筒洗衣机的特征在于，具备：有底筒状的滚筒，设置为能绕沿水平方向或倾斜方向延伸的轴线旋转；马达，经由从所述滚筒的底部突出的驱动轴对所述滚筒进行旋转驱动；加速度传感器，检测所述滚筒的前端部的加速度；更新单元，在脱水过程中，更新与用于判定是否使所述滚筒的转速上升的所述马达的输出相关的第一阈值；以及判定单元，在脱水过程中，在所述马达的输出小于所述第一阈值的情况下，判定为使所述滚筒的转速上升，与所述加速度传感器的输出为第二阈值以上时相比，当所述加速度传感器的输出小于所述第二阈值时，所述滚筒以规定转速旋转时的所述第一阈值更大。That is, the drum washing machine of the present invention includes a bottomed cylindrical drum provided to be rotatable about an axis extending in a horizontal direction or an oblique direction, and a motor, which is positioned via a drive shaft protruding from the bottom of the drum. The drum is rotationally driven; an acceleration sensor detects the acceleration of the front end of the drum; and an update unit updates a first output related to the output of the motor for determining whether to increase the rotation speed of the drum during the dehydration process. A threshold; and a judging unit, in a dehydration process, when the output of the motor is less than the first threshold, determining that the rotation speed of the drum is increased, and when the output of the acceleration sensor is greater than a second threshold In contrast, when the output of the acceleration sensor is smaller than the second threshold, the first threshold when the drum rotates at a predetermined rotation speed is larger.

本发明的滚筒洗衣机的特征在于，在所述马达的输出为所述第一阈值以上且所述加速度传感器的输出小于所述第二阈值的情况下，所述更新单元更新所述第一阈值，使得所述第一阈值的值增大。The drum washing machine of the present invention is characterized in that, when the output of the motor is greater than the first threshold and the output of the acceleration sensor is less than the second threshold, the update unit updates the first threshold, The value of the first threshold is increased.

在本发明的滚筒洗衣机中，在所述判定单元判定为所述马达的输出为所述第一阈值以上而不使所述滚筒的转速上升之后，通过所述更新单元来更新所述第一阈值的值而使其增大，在所述马达的输出小于更新后的第一阈值的情况下，判定为使所述滚筒的转速上升。In the drum washing machine of the present invention, after the determination unit determines that the output of the motor is equal to or greater than the first threshold value without increasing the rotation speed of the drum, the first threshold value is updated by the update unit. If the output of the motor is smaller than the updated first threshold, it is determined to increase the rotation speed of the drum.

在发明的滚筒洗衣机的特征在于，在所述马达的输出为所述第一阈值以上且所述加速度传感器的输出为所述第二阈值以上的情况下，所述更新单元更新所述第一阈值而不增大所述第一阈值的值。In the drum washing machine of the present invention, the update unit updates the first threshold when the output of the motor is equal to or greater than the first threshold and the output of the acceleration sensor is equal to or greater than the second threshold. Without increasing the value of the first threshold.

本发明的滚筒洗衣机的特征在于，在通过所述判定单元判定为所述滚筒的转速为第一转速时的所述马达的输出小于所述第一阈值并控制所述滚筒的转速使其上升至比第一转速大的第二转速的情况下，所述更新单元根据所述滚筒的转速为第二转速时的所述加速度传感器的输出，更新所述第一阈值。The drum washing machine of the present invention is characterized in that, when the rotation speed of the drum is determined to be the first rotation speed by the determination unit, the output of the motor is smaller than the first threshold value, and the rotation speed of the drum is controlled to be increased to In the case of a second rotation speed greater than the first rotation speed, the updating unit updates the first threshold value according to an output of the acceleration sensor when the rotation speed of the drum is the second rotation speed.

本发明的滚筒洗衣机的特征在于，在所述判定单元判定为使所述滚筒的转速上升之后，通过所述更新单元来更新所述第一阈值而使其减小，在所述马达的输出为更新后的第一阈值以上的情况下，判定为不使所述滚筒的转速上升。The drum washing machine of the present invention is characterized in that after the determination unit determines that the rotation speed of the drum is increased, the first threshold value is updated and reduced by the update unit, and the output of the motor is When the updated first threshold value or more is determined, it is determined that the rotation speed of the drum is not increased.

本发明的滚筒洗衣机的特征在于，在所述滚筒的转速上升时所述加速度传感器的输出不变化的情况下，所述更新单元更新所述第一阈值而不增大所述第一阈值的值。The drum washing machine of the present invention is characterized in that, when the output of the acceleration sensor does not change when the rotation speed of the drum increases, the update unit updates the first threshold value without increasing the value of the first threshold value .

发明效果Invention effect

本发明的滚筒洗衣机中，在脱水过程中，与用于判断是否使滚筒的转速上升的马达的输出相关的第一阈值根据加速度传感器的输出而变化。当加速度传感器的输出为第二阈值以上时，滚筒的前端部的振动大，因此当滚筒的转速上升时，滚筒的振动会直接传递给洗衣机主体，容易在滚筒洗衣机中产生振动、噪声。与此相对，当加速度传感器的输出小于第二阈值时，滚筒的前端部的振动小，因此即使在使滚筒的转速上升时滚筒稍微振动，该滚筒的振动也不会直接传递给洗衣机主体，滚筒洗衣机中几乎不会产生振动、噪声。In the drum washing machine of the present invention, in the dehydration process, the first threshold value related to the output of the motor for determining whether to increase the rotation speed of the drum is changed according to the output of the acceleration sensor. When the output of the acceleration sensor is greater than the second threshold, the front end of the drum has a large vibration. Therefore, when the rotation speed of the drum increases, the vibration of the drum is directly transmitted to the washing machine main body, which easily generates vibration and noise in the drum washing machine. In contrast, when the output of the acceleration sensor is less than the second threshold, the vibration of the front end portion of the drum is small. Therefore, even if the drum vibrates slightly when the rotation speed of the drum is increased, the vibration of the drum is not directly transmitted to the main body of the washing machine. There is almost no vibration or noise in the washing machine.

因此，本发明的滚筒洗衣机中，通过使加速度传感器的输出小于第二阈值时的第一阈值比加速度传感器的输出为第二阈值以上时的第一阈值大，从而在滚筒洗衣机中几乎不产生振动、噪声的情况下降低脱水过程中断的可能性。由此，在即使使滚筒的转速上升后滚筒稍微振动，滚筒洗衣机中也几乎不产生振动、噪声的情况下，脱水过程会继续，因而能提高滚筒洗衣机的运转效率。Therefore, in the drum washing machine of the present invention, vibration is hardly generated in the drum washing machine by making the first threshold when the output of the acceleration sensor is smaller than the second threshold greater than the first threshold when the output of the acceleration sensor is greater than the second threshold. And noise to reduce the possibility of interruption of the dehydration process. Therefore, even if the drum is slightly vibrated after the rotation speed of the drum is increased, vibration and noise are hardly generated in the drum washing machine, the dehydration process is continued, and the operation efficiency of the drum washing machine can be improved.

本发明的滚筒洗衣机中，在处于滚筒的振动不会直接传递给洗衣机主体的状况的情况下，通过增大第一阈值的值并再次进行判定，降低了中断脱水过程的可能性。由此，能提高滚筒洗衣机的运转效率。In the drum washing machine of the present invention, in a situation where the vibration of the drum is not directly transmitted to the main body of the washing machine, by increasing the value of the first threshold value and making a determination again, the possibility of interrupting the dehydration process is reduced. This can improve the operation efficiency of the drum washing machine.

本发明的滚筒洗衣机中，在判定为马达的输出为第一阈值以上而不使滚筒的转速上升之后，当判断偏心载荷位置位于后端侧时，更新第一阈值的值使其增大，在马达的输出小于更新后的第一阈值的情况下，能使滚筒的转速上升而继续脱水过程。由此，能提高滚筒洗衣机的运转效率。In the drum washing machine of the present invention, after it is determined that the output of the motor is equal to or higher than the first threshold value without increasing the rotation speed of the drum, when it is determined that the position of the eccentric load is located at the rear end side, the value of the first threshold value is updated to increase it. When the output of the motor is less than the updated first threshold, the rotation speed of the drum can be increased to continue the dehydration process. This can improve the operation efficiency of the drum washing machine.

本发明的滚筒洗衣机中，设置为：在滚筒的振动直接传递给洗衣机主体而使得滚筒洗衣机中产生振动、噪声的情况下，以不增大第一阈值的方式可靠地中断脱水过程。In the drum washing machine of the present invention, in a case where the vibration of the drum is directly transmitted to the main body of the washing machine so that vibration and noise are generated in the drum washing machine, the dehydration process is reliably interrupted without increasing the first threshold.

本发明的滚筒洗衣机中，能在滚筒的转速上升之后，根据更明确地输出的加速度传感器的输出来更新第一阈值。因此，第一阈值被更新为更合适的值。In the drum washing machine of the present invention, after the rotation speed of the drum is increased, the first threshold value can be updated based on the output of the acceleration sensor which is more clearly output. Therefore, the first threshold value is updated to a more appropriate value.

本发明的滚筒洗衣机中，马达的输出小于第一阈值，因此在使滚筒的转速上升之后，当判断为偏心载荷位置位于前端侧时，更新第一阈值使其减小，在马达的输出为更新后的第一阈值以上的情况下，能以不使滚筒的转速上升的方式中断脱水过程。由此，能防止在滚筒洗衣机中产生振动、噪声。In the drum washing machine of the present invention, the output of the motor is less than the first threshold value. Therefore, after the rotation speed of the drum is increased, when the position of the eccentric load is determined to be on the front end side, the first threshold value is updated to reduce it, and the output of the motor is updated. In the case of the first threshold value or more, the dehydration process can be interrupted without increasing the rotation speed of the drum. This can prevent vibration and noise from being generated in the drum washing machine.

本发明的滚筒洗衣机中，在加速度传感器的输出在滚筒的转速上升时不变化的情况下，加速度传感器发生故障的可能性高，因此，通过不根据加速度传感器的输出来改变第一阈值，防止了滚筒洗衣机不能被适当地控制。In the drum washing machine of the present invention, when the output of the acceleration sensor does not change when the rotation speed of the drum increases, the possibility of the acceleration sensor malfunctioning is high. Therefore, the first threshold value is prevented from being changed according to the output of the acceleration sensor, which prevents The drum washing machine cannot be properly controlled.

附图说明BRIEF DESCRIPTION OF THE DRAWINGS

图1是本发明的第一实施方式的滚筒洗衣机1的示意性剖面图。FIG. 1 is a schematic sectional view of a drum washing machine 1 according to a first embodiment of the present invention.

图2是滚筒洗衣机1的控制框图。FIG. 2 is a control block diagram of the drum washing machine 1.

图3是表示马达输出的计算方法的图。FIG. 3 is a diagram showing a calculation method of a motor output.

图4是表示马达10的电流的波形的曲线图。FIG. 4 is a graph showing a waveform of a current of the motor 10.

图5是表示加速度输出的计算方法的图。FIG. 5 is a diagram showing a calculation method of acceleration output.

图6是表示在图1的滚筒洗衣机1中判定加速度传感器12是否发生了故障时的动作的流程图。FIG. 6 is a flowchart showing an operation when determining whether the acceleration sensor 12 has failed in the drum washing machine 1 of FIG. 1.

图7是表示图1的滚筒洗衣机1的脱水过程的动作的流程图。FIG. 7 is a flowchart showing the operation of the spin-drying process of the drum washing machine 1 of FIG. 1.

图8是表示本发明的第二实施方式的滚筒洗衣机100的脱水过程的动作的流程图。FIG. 8 is a flowchart showing the operation of the spin-drying process of the drum washing machine 100 according to the second embodiment of the present invention.

图9是表示本发明的第三实施方式的滚筒洗衣机200的脱水过程的动作的流程图。FIG. 9 is a flowchart showing the operation of the spin-drying process of the drum washing machine 200 according to the third embodiment of the present invention.

图10是表示马达输出的计算方法的变形例的图。FIG. 10 is a diagram showing a modified example of a calculation method of a motor output.

附图标记说明Reference Signs

1、100、200：滚筒洗衣机；2：滚筒；10：马达；12：加速度传感器；17：驱动轴；55：阈值更新部(更新单元)；56：脱水加速判定部(判定单元)。1, 100, 200: drum washing machine; 2: drum; 10: motor; 12: acceleration sensor; 17: drive shaft; 55: threshold update unit (update unit); 56: dehydration acceleration determination unit (determination unit).

具体实施方式detailed description

(第一实施方式)(First Embodiment)

以下，基于附图对本发明的实施方式进行详细说明。图1是本发明的实施方式的滚筒洗衣机1的示意性剖面图。Hereinafter, embodiments of the present invention will be described in detail based on the drawings. FIG. 1 is a schematic sectional view of a drum washing machine 1 according to an embodiment of the present invention.

本实施方式的滚筒洗衣机1能适用于诸如自助洗衣店、家庭，其具备：洗衣机主体1a；洗涤筒1b，包括具有大致水平延伸而成的轴线S1的滚筒2和外筒3；驱动装置20；以及控制部50。The drum washing machine 1 of this embodiment can be applied to, for example, a laundromat and a household, and includes: a washing machine main body 1a; a washing drum 1b including a drum 2 and an outer drum 3 having an axis S1 extending substantially horizontally; and a driving device 20; And control section 50.

图1所示的洗衣机主体1a为大致长方体形状。在洗衣机主体1a的前表面10a，形成有用于向滚筒2投取洗涤物的开口11，并且装配有能开闭该开口11的未图示的开闭盖。本实施方式的滚筒洗衣机1被称为洗涤筒1b装配在大致水平方向的滚筒式全自动洗衣机。The washing machine body 1a shown in FIG. 1 has a substantially rectangular parallelepiped shape. The front surface 10a of the washing machine main body 1a is formed with an opening 11 for taking laundry into the drum 2, and an opening and closing cover (not shown) capable of opening and closing the opening 11 is attached. The drum washing machine 1 according to this embodiment is referred to as a drum-type fully automatic washing machine in which the washing drum 1b is installed in a substantially horizontal direction.

外筒3是配置于洗衣机主体1a的内部的有底筒状的构件，内部能蓄留洗涤水。如图1所示，在外筒3的外周面3a的前端部，装配有例如能检测左右方向、上下方向以及前后方向这三个方向上的加速度的加速度传感器12。需要说明的是，本实施方式中，加速度传感器12是能检测左右方向、上下方向以及前后方向的加速度的三轴传感器。此外，在外筒3连接有能向外部排出洗涤水的排出路3b。在该排出路3b设有可开闭地设置的排出阀3c。The outer tub 3 is a bottomed cylindrical member disposed inside the washing machine main body 1a, and can store wash water therein. As shown in FIG. 1, an acceleration sensor 12 capable of detecting accelerations in three directions, for example, the left-right direction, the up-down direction, and the front-rear direction, is mounted on the front end portion of the outer peripheral surface 3 a of the outer tube 3. It should be noted that, in this embodiment, the acceleration sensor 12 is a three-axis sensor capable of detecting accelerations in the left-right direction, the up-down direction, and the front-back direction. In addition, the outer tube 3 is connected to a discharge path 3b capable of discharging wash water to the outside. The discharge path 3b is provided with a discharge valve 3c which can be opened and closed.

滚筒2是与外筒3同轴配置于外筒3内且被自由旋转地支承的有底筒状的构件。滚筒2能在内部收容洗涤物，其壁面具有许多通水孔。The drum 2 is a bottomed cylindrical member that is disposed coaxially with the outer cylinder 3 and is rotatably supported in the outer cylinder 3. The drum 2 is capable of accommodating laundry inside, and the wall surface of the drum 2 has a plurality of through holes.

如图1所示，驱动装置20通过马达10使带轮15和传动带15a旋转，并且使朝向滚筒2的底部2c伸出的驱动轴17旋转，为滚筒2提供转矩，使滚筒2旋转。As shown in FIG. 1, the driving device 20 rotates the pulley 15 and the transmission belt 15 a by the motor 10, and rotates the driving shaft 17 protruding toward the bottom 2 c of the drum 2 to provide torque to the drum 2 and rotate the drum 2.

图2是本实施方式的滚筒洗衣机1的控制框图。如图2所示，滚筒洗衣机1的控制部50例如由微型计算机等构成，具备：CPU；ROM，储存控制滚筒洗衣机1的动作的程序；以及RAM，临时存储有执行上述程序时所用的数据等。滚筒洗衣机1的运转工作由该控制部50控制。在控制部50连接有马达10和加速度传感器12。FIG. 2 is a control block diagram of the drum washing machine 1 according to the present embodiment. As shown in FIG. 2, the control unit 50 of the drum washing machine 1 is composed of, for example, a microcomputer, and includes: a CPU; a ROM that stores a program that controls the operation of the drum washing machine 1; and a RAM that temporarily stores data and the like used to execute the program. . The operation of the drum washing machine 1 is controlled by the control unit 50. The control unit 50 is connected to a motor 10 and an acceleration sensor 12.

控制部50具有马达输出计算部51、加速度输出计算部52、马达输出判定部53、加速度输出判定部54、阈值更新部55、脱水加速判定部56、故障判定部57以及马达控制部58。The control unit 50 includes a motor output calculation unit 51, an acceleration output calculation unit 52, a motor output determination unit 53, an acceleration output determination unit 54, a threshold value update unit 55, a dehydration acceleration determination unit 56, a failure determination unit 57, and a motor control unit 58.

在脱水起动时的低速区域，马达输出计算部51计算出滚筒2的一个旋转期间内的电流变化量作为马达输出。基于图3和图4对计算出滚筒2的一个旋转期间内的电流变化量作为马达输出的方法进行说明。In the low-speed region at the start of dehydration, the motor output calculation unit 51 calculates the amount of change in current during one rotation period of the drum 2 as the motor output. A method of calculating the amount of current change during one rotation period of the drum 2 as the motor output will be described based on FIGS. 3 and 4.

＜步骤S1、S2＞<Steps S1 and S2>

在步骤S1中，控制部50继续获取马达10的电流值。步骤S2中，控制部50通过低通滤波器进行电流值的噪声处理。图4是表示马达10的电流的波形的曲线图。马达10的电流的波形具有最大值(max)和最小值(min)，是周期变化的波形。In step S1, the control unit 50 continues to acquire the current value of the motor 10. In step S2, the control unit 50 performs noise processing of the current value through a low-pass filter. FIG. 4 is a graph showing a waveform of a current of the motor 10. The waveform of the current of the motor 10 has a maximum value (max) and a minimum value (min), and is a waveform that changes periodically.

＜步骤S3＞<Step S3>

步骤S3中，控制部50根据马达10的电流的最大值(max)与最小值(min)之差，计算出滚筒2的一个旋转期间内的电流变化量。In step S3, the control unit 50 calculates the amount of current change during one rotation period of the drum 2 based on the difference between the maximum value (max) and the minimum value (min) of the current of the motor 10.

滚筒2的一个旋转期间内的电流变化量与滚筒旋转时的负荷转矩的变动量相对应。因此，根据滚筒2的一个旋转期间内的电流变化量，能检测出滚筒2内的洗涤物的偏置即不平衡量。The amount of current change during one rotation period of the drum 2 corresponds to the amount of change in the load torque when the drum is rotated. Therefore, based on the amount of current change during one rotation period of the drum 2, it is possible to detect the amount of imbalance in the laundry in the drum 2.

在脱水起动时的低速区域，加速度输出计算部52计算出滚筒2的一个旋转期间内的加速度变化量作为加速度输出。计算出滚筒2的一个旋转期间内的加速度变化量作为加速度输出的方法与计算出滚筒2的一个旋转期间内的电流变化量作为马达输出的方法相同，使用加速度传感器12的输出代替图4的马达10的电流的波形。基于图5对计算出滚筒2的一个旋转期间内的加速度变化量作为加速度输出的方法进行说明。图5是表示加速度输出的计算方法的图。In the low-speed region at the start of dehydration, the acceleration output calculation unit 52 calculates the acceleration change amount during one rotation period of the drum 2 as the acceleration output. The method of calculating the acceleration change amount during one rotation period of the drum 2 as the acceleration output is the same as the method of calculating the current change amount during one rotation period of the drum 2 as the motor output. The output of the acceleration sensor 12 is used instead of the motor of FIG. 4 Waveform of 10 current. A method of calculating an acceleration change amount during one rotation period of the drum 2 as an acceleration output will be described based on FIG. 5. FIG. 5 is a diagram showing a calculation method of acceleration output.

＜步骤S101、S102＞<Steps S101 and S102>

步骤S101中，控制部50继续获取来自加速度传感器12的加速度信号。步骤S102中，控制部50通过低通滤波器进行加速度信号的噪声处理。考虑到图4是表示加速度传感器12的输出的曲线图，来自加速度传感器12的加速度信号的波形具有最大值(max)和最小值(min)，是周期变化的波形。In step S101, the control unit 50 continues to acquire an acceleration signal from the acceleration sensor 12. In step S102, the control unit 50 performs noise processing of the acceleration signal through a low-pass filter. Considering that FIG. 4 is a graph showing the output of the acceleration sensor 12, the waveform of the acceleration signal from the acceleration sensor 12 has a maximum value (max) and a minimum value (min), and is a waveform that changes periodically.

＜步骤S103＞<Step S103>

步骤S103中，控制部50根据来自加速度传感器12的加速度信号的最大值(max)与最小值(min)之差，计算出滚筒2的一个旋转期间内的加速度变化量。来自加速度传感器12的加速度信号包括3个轴方向的加速度，因此加速度传感器12的输出是反映左右方向、上下方向以及前后方向的加速度的输出。In step S103, the control unit 50 calculates the amount of change in acceleration during one rotation period of the drum 2 based on the difference between the maximum value (max) and the minimum value (min) of the acceleration signal from the acceleration sensor 12. The acceleration signal from the acceleration sensor 12 includes accelerations in three axial directions, so the output of the acceleration sensor 12 is an output that reflects accelerations in the left-right direction, the up-down direction, and the front-rear direction.

马达输出判定部53判定由马达输出计算部51计算出的马达输出是否是第一阈值以上。第一阈值是用于判定在脱水过程中是否使滚筒2的转速上升的阈值。在由马达输出计算部51计算出的马达输出为第一阈值以上的情况下，滚筒2内的洗涤物的偏置即不平衡量增大，当使滚筒2的转速上升时，滚筒洗衣机1中会产生振动、噪声。对此，在由马达输出计算部52计算出的马达输出小于第一阈值的情况下，滚筒2内的洗涤物的偏置即不平衡量减小，即使使滚筒2的转速上升，滚筒洗衣机1中也不会产生振动、噪声。The motor output determination unit 53 determines whether the motor output calculated by the motor output calculation unit 51 is equal to or greater than a first threshold. The first threshold value is a threshold value for determining whether the rotation speed of the drum 2 is increased during the dehydration process. When the motor output calculated by the motor output calculation unit 51 is greater than or equal to the first threshold, the amount of imbalance in the laundry in the drum 2 is increased, and when the rotation speed of the drum 2 is increased, the drum washing machine 1 may Generate vibration and noise. On the other hand, when the motor output calculated by the motor output calculation unit 52 is smaller than the first threshold value, the amount of unbalance of the laundry in the drum 2 is reduced, and even if the rotation speed of the drum 2 is increased, the drum washing machine 1 No vibration or noise is generated.

在本实施方式中，第一阈值是使滚筒2的转速上升时不产生滚筒洗衣机1的振动、噪声的程度的不平衡量的上限值。第一阈值能根据经验算出，是根据滚筒2的转速而变化的阈值。In the present embodiment, the first threshold value is an upper limit value of an amount of imbalance in which the vibration and noise of the drum washing machine 1 are not generated when the rotation speed of the drum 2 is increased. The first threshold value can be calculated empirically and is a threshold value that changes according to the rotation speed of the drum 2.

加速度输出判定部54判定由加速度输出计算部52计算出的加速度输出是否为第二阈值以上。第二阈值是用于判定脱水过程中在使滚筒2的转速上升时滚筒洗衣机1中是否会产生振动、噪声的阈值。在加速度输出为第二阈值以上的情况下，滚筒2的前端部的振动增大，与由加速度输出计算部54计算出的加速度输出小于第二阈值的情况相比，在使滚筒2的转速上升时，滚筒洗衣机1中容易产生振动、噪声。The acceleration output determination unit 54 determines whether the acceleration output calculated by the acceleration output calculation unit 52 is equal to or greater than a second threshold. The second threshold value is a threshold value for determining whether vibration or noise is generated in the drum washing machine 1 when the rotation speed of the drum 2 is increased during dehydration. When the acceleration output is greater than or equal to the second threshold, the vibration of the front end portion of the drum 2 is increased, and the rotation speed of the drum 2 is increased as compared with the case where the acceleration output calculated by the acceleration output calculation unit 54 is smaller than the second threshold. In this case, vibration and noise are easily generated in the drum washing machine 1.

在本实施方式中，第二阈值是使滚筒2的转速上升时不会产生滚筒洗衣机1的振动、噪声的程度的滚筒2的前端部的振动的上限值。第二阈值是由马达输出计算部51计算出的马达输出的函数。In this embodiment, the second threshold value is an upper limit value of the vibration of the front end portion of the drum 2 to such an extent that the vibration and noise of the drum washing machine 1 are not generated when the rotation speed of the drum 2 is increased. The second threshold value is a function of the motor output calculated by the motor output calculation unit 51.

阈值更新部55更新与在马达输出判定部53的判定中使用的马达输出相关的第一阈值。第一阈值用于判定是否使滚筒2的转速上升而加速脱水。本实施方式中，阈值更新部55根据加速度输出判定部54作出的判定更新第一阈值。The threshold value update unit 55 updates a first threshold value related to the motor output used in the determination by the motor output determination unit 53. The first threshold value is used to determine whether the rotation speed of the drum 2 is increased to accelerate dehydration. In the present embodiment, the threshold update unit 55 updates the first threshold based on the determination made by the acceleration output determination unit 54.

具体而言，阈值更新部55更新第一阈值，使得与加速度传感器12的输出为第二阈值以上时相比，滚筒2以规定转速旋转时的第一阈值在加速度传感器12的输出小于第二阈值时更大。即，阈值更新部55更新第一阈值，使得在滚筒2的转速相同的情况下，加速度传感器12的输出小于第二阈值时的第一阈值比加速度传感器12的输出为第二阈值以上时的第一阈值大。Specifically, the threshold update unit 55 updates the first threshold so that the output of the acceleration sensor 12 at the first threshold when the drum 2 rotates at a predetermined rotation speed is smaller than the second threshold when the output of the acceleration sensor 12 is greater than or equal to the second threshold. Time is bigger. That is, the threshold update unit 55 updates the first threshold so that when the rotation speed of the drum 2 is the same, the first threshold when the output of the acceleration sensor 12 is smaller than the second threshold is smaller than A threshold is large.

在本实施方式的滚筒洗衣机1中，在马达输出为第一阈值以上且加速度输出小于第二阈值的情况下，阈值更新部55更新第一阈值，使得第一阈值增大。In the drum washing machine 1 of the present embodiment, when the motor output is greater than or equal to the first threshold value and the acceleration output is less than the second threshold value, the threshold value update unit 55 updates the first threshold value so that the first threshold value increases.

与此相对，在马达输出为第一阈值以上且加速度输出为第二阈值以上的情况下，阈值更新部55以第一阈值不会发生变化的方式更新第一阈值。In contrast, when the motor output is equal to or greater than the first threshold and the acceleration output is equal to or greater than the second threshold, the threshold update section 55 updates the first threshold so that the first threshold does not change.

脱水加速判定部56判定由马达输出计算部51计算出的马达输出是否为第一阈值以上。脱水加速判定部56根据由马达输出计算部51计算出的马达输出，判定是否使马达的转速上升而加速脱水。The dehydration acceleration determination unit 56 determines whether the motor output calculated by the motor output calculation unit 51 is equal to or greater than a first threshold value. The dehydration acceleration determination unit 56 determines whether to accelerate the dehydration by increasing the rotation speed of the motor based on the motor output calculated by the motor output calculation unit 51.

具体而言，在由马达输出计算部51计算出的马达输出为第一阈值以上的情况下，不平衡量大，因此脱水加速判定部56判定为使滚筒2的转速上升而不加速脱水。Specifically, when the motor output calculated by the motor output calculation unit 51 is equal to or greater than the first threshold, the amount of imbalance is large. Therefore, the dehydration acceleration determination unit 56 determines that the rotation speed of the drum 2 is increased without accelerating dehydration.

与此相对，在由马达输出计算部51计算出的马达输出小于第一阈值的情况下不平衡量小，因此脱水加速判定部56判定为使滚筒2的转速上升而加速脱水。In contrast, when the motor output calculated by the motor output calculation unit 51 is smaller than the first threshold, the amount of imbalance is small, so the dehydration acceleration determination unit 56 determines that the rotation speed of the drum 2 is increased to accelerate dehydration.

本实施方式的滚筒洗衣机1具备：有底筒状的滚筒2，设置为能绕沿水平方向延伸的轴线旋转；马达10，经由从滚筒2的底部突出的驱动轴对滚筒2进行旋转驱动；加速度传感器12，检测滚筒2的前端部的加速度；阈值更新部55，在脱水过程中，更新与用于判定是否使滚筒2的转速上升的马达10的输出相关的第一阈值；以及脱水加速判定部56，在脱水过程中，在马达10的输出小于第一阈值的情况下，判定为使滚筒2的转速上升，加速度传感器12的输出小于第二阈值时的第一阈值比加速度传感器12的输出是第二阈值以上时的第一阈值大。The drum washing machine 1 according to this embodiment includes a bottomed cylindrical drum 2 provided to be rotatable about an axis extending in the horizontal direction; a motor 10 that rotationally drives the drum 2 via a drive shaft protruding from the bottom of the drum 2; acceleration The sensor 12 detects the acceleration of the front end portion of the drum 2; the threshold value update unit 55 updates the first threshold value related to the output of the motor 10 for determining whether to increase the rotation speed of the drum 2 during the dehydration process; and the dehydration acceleration determination unit 56. In the dehydration process, when the output of the motor 10 is less than the first threshold, it is determined that the rotation speed of the drum 2 is increased, and the output of the acceleration sensor 12 is smaller than the second threshold when the output of the acceleration sensor 12 is The first threshold value is larger than the second threshold value.

由此，本实施方式的滚筒洗衣机1中，在脱水过程中，与用于判断是否使滚筒2的转速上升的马达10的输出相关的第一阈值根据加速度传感器12的输出而改变。在加速度传感器12的输出为第二阈值以上时，滚筒2的前端部的振动大，因此当滚筒2的转速上升时，滚筒2的振动会直接传递给洗衣机主体1a，容易在滚筒洗衣机1中产生振动、噪声。与此相对，在加速度传感器12的输出小于第二阈值时，滚筒2的前端部的振动小，因此使滚筒2的转速上升时，即使滚筒2稍微振动，该滚筒2的振动也不会直接传递给洗衣机主体1a，滚筒洗衣机1中几乎不会产生振动、噪声。Therefore, in the drum washing machine 1 according to the present embodiment, the first threshold value related to the output of the motor 10 for determining whether to increase the rotation speed of the drum 2 during the dehydration process is changed according to the output of the acceleration sensor 12. When the output of the acceleration sensor 12 is equal to or greater than the second threshold, the front end of the drum 2 has a large vibration. Therefore, when the rotation speed of the drum 2 increases, the vibration of the drum 2 is directly transmitted to the washing machine body 1 a, and is easily generated in the drum washing machine 1. Vibration and noise. In contrast, when the output of the acceleration sensor 12 is less than the second threshold value, the vibration of the front end portion of the drum 2 is small. Therefore, when the rotation speed of the drum 2 is increased, even if the drum 2 vibrates slightly, the vibration of the drum 2 is not directly transmitted. To the washing machine body 1a, almost no vibration or noise is generated in the drum washing machine 1.

因此，本实施方式的滚筒洗衣机1中，通过使加速度传感器12的输出小于第二阈值时的第一阈值比加速度传感器12的输出为第二阈值以上时的第一阈值大，从而降低在滚筒洗衣机1中几乎不产生振动、噪声的情况下脱水过程中断的可能性。由此，在滚筒洗衣机1中几乎不产生振动、噪声的情况下，会继续脱水过程，因而能提高滚筒洗衣机1的运转效率。Therefore, in the drum washing machine 1 according to this embodiment, the first threshold value when the output of the acceleration sensor 12 is smaller than the second threshold value is larger than the first threshold value when the output of the acceleration sensor 12 is greater than the second threshold value, thereby reducing the The possibility that the dehydration process will be interrupted with almost no vibration or noise in 1. Therefore, when vibration and noise are hardly generated in the drum washing machine 1, the dehydration process is continued, so that the operation efficiency of the drum washing machine 1 can be improved.

故障判定部57根据基于来自加速度传感器12的加速度信号的加速度输出，判定加速度传感器12是否发生了故障。本实施方式中，在加速度传感器12的加速度输出在滚筒2的转速上升时不变化的情况下，故障检测部57判定为加速度传感器12发生了故障。加速度传感器12的加速度输出不变化的情况包括：加速度传感器12的加速度输出为0的情况、加速度传感器12的加速度输出的变化量为规定量以下的情况。The failure determination unit 57 determines whether a failure has occurred in the acceleration sensor 12 based on an acceleration output based on an acceleration signal from the acceleration sensor 12. In the present embodiment, when the acceleration output of the acceleration sensor 12 does not change when the rotation speed of the drum 2 increases, the failure detection unit 57 determines that the acceleration sensor 12 has failed. The cases where the acceleration output of the acceleration sensor 12 does not change include a case where the acceleration output of the acceleration sensor 12 is 0, and a case where the amount of change in the acceleration output of the acceleration sensor 12 is equal to or less than a predetermined amount.

马达控制部58通过改变马达电流来控制滚筒2的转速。具体而言，在通过脱水加速判定部56判定为加速脱水的情况下，马达控制部58增大马达电流。与此相对，在脱水过程中通过脱水加速判定部56判定为不加速脱水的情况下，马达控制部37不改变马达电流。The motor control unit 58 controls the rotation speed of the drum 2 by changing the motor current. Specifically, when it is determined by the dehydration acceleration determination unit 56 to accelerate dehydration, the motor control unit 58 increases the motor current. In contrast, when the dehydration acceleration determination unit 56 determines that the dehydration is not accelerated during the dehydration process, the motor control unit 37 does not change the motor current.

接着，基于图6对滚筒洗衣机1中判定加速度传感器12是否发生了故障时的动作进行说明。图6是表示判定加速度传感器12是否发生了故障时的动作的流程图。Next, an operation when determining whether the acceleration sensor 12 has failed in the drum washing machine 1 will be described based on FIG. 6. FIG. 6 is a flowchart showing the operation when determining whether or not the acceleration sensor 12 has failed.

＜步骤S201＞<Step S201>

步骤S201中，当滚筒洗衣机1的运转开始时，控制部50反复判断基于来自加速度传感器12的加速度信号的加速度输出是否为0。在加速度传感器12的输出不为0的情况下，进入步骤S202。In step S201, when the operation of the drum washing machine 1 is started, the control unit 50 repeatedly determines whether the acceleration output based on the acceleration signal from the acceleration sensor 12 is 0. When the output of the acceleration sensor 12 is not 0, the process proceeds to step S202.

＜步骤S202＞〈Step S202〉

步骤S202中，在滚筒2的转速上升时，控制部50判定基于来自加速度传感器12的加速度信号的加速度输出的变化量是否为规定量以下。规定量是判定基于来自加速度传感器12的加速度信号的加速度输出是否随着滚筒2的转速的上升而适当地增大的量。在加速度输出的变化量不为规定量以下的情况下，进入步骤S203。In step S202, when the rotation speed of the drum 2 is increased, the control unit 50 determines whether the amount of change in the acceleration output based on the acceleration signal from the acceleration sensor 12 is equal to or less than a predetermined amount. The predetermined amount is an amount that determines whether the acceleration output based on the acceleration signal from the acceleration sensor 12 is appropriately increased as the rotation speed of the drum 2 increases. When the change amount of the acceleration output is not equal to or smaller than the predetermined amount, the process proceeds to step S203.

＜步骤S203＞<Step S203>

步骤S203中，控制部50判定加速度传感器12未发生故障，将马达输出和加速度输出双方并用，继续滚筒洗衣机1的运转。In step S203, the control unit 50 determines that the acceleration sensor 12 is not malfunctioning, uses both the motor output and the acceleration output, and continues the operation of the drum washing machine 1.

＜步骤S204＞<Step S204>

在步骤S201中加速度传感器12的加速度输出为0的情况和步骤S202中加速度输出的变化量为规定量以下的情况下，进入步骤S204，控制部50判定加速度传感器12发生了故障，不使用加速度输出而仅使用马达输出，继续滚筒洗衣机1的运转。When the acceleration output of the acceleration sensor 12 is 0 in step S201 and when the change amount of the acceleration output in step S202 is less than a predetermined amount, the process proceeds to step S204, and the control unit 50 determines that the acceleration sensor 12 has failed and does not use the acceleration output Only the motor output is used to continue the operation of the drum washing machine 1.

如此一来，本实施方式的滚筒洗衣机1中，在加速度传感器12发生故障的情况下，仅使用马达输出来继续滚筒洗衣机1的运转。因此，这种情况下，无法根据马达输出和加速度输出这两者来更新与马达输出相关的第一阈值。即，在本实施方式的滚筒洗衣机1中，在加速度传感器12的加速度输出在滚筒2的转速上升时不变化的情况下，阈值更新部55更新第一阈值。As described above, in the drum washing machine 1 according to the present embodiment, when the acceleration sensor 12 fails, only the motor output is used to continue the operation of the drum washing machine 1. Therefore, in this case, the first threshold value related to the motor output cannot be updated from both the motor output and the acceleration output. That is, in the drum washing machine 1 of the present embodiment, when the acceleration output of the acceleration sensor 12 does not change when the rotation speed of the drum 2 increases, the threshold update unit 55 updates the first threshold.

在加速度传感器12的输出在滚筒2的转速上升时不变化的情况下，加速度传感器12发生故障的可能性高。因此，本实施方式的滚筒洗衣机1中，在这种情况下，通过不根据加速度传感器12的输出来改变第一阈值，从而防止滚筒洗衣机1不能被适当地控制。When the output of the acceleration sensor 12 does not change when the rotation speed of the drum 2 increases, the possibility that the acceleration sensor 12 will malfunction is high. Therefore, in the drum washing machine 1 of this embodiment, in this case, the drum washing machine 1 is prevented from being properly controlled by not changing the first threshold value in accordance with the output of the acceleration sensor 12.

接着，基于图7对滚筒洗衣机1的脱水过程的动作进行说明。图7是表示滚筒洗衣机1的脱水过程的动作的流程图。Next, the operation of the spin-drying process of the drum washing machine 1 will be described based on FIG. 7. FIG. 7 is a flowchart showing the operation of the spin-drying process of the drum washing machine 1.

＜步骤S301、S302＞<Steps S301, S302>

步骤S301中，当脱水过程开始时，控制部50控制马达10，对滚筒2进行旋转驱动。步骤S302中，控制部50反复判断滚筒2的转速是否达到了100rpm。在滚筒2的转速达到100rpm的情况下，进入步骤S303。In step S301, when the dehydration process is started, the control unit 50 controls the motor 10 to rotate and drive the drum 2. In step S302, the control unit 50 repeatedly determines whether the rotation speed of the drum 2 has reached 100 rpm. When the rotation speed of the drum 2 reaches 100 rpm, the process proceeds to step S303.

＜步骤S303＞<Step S303>

步骤S303中，控制部50控制马达10，使滚筒2以100rpm的转速恒速旋转。In step S303, the control unit 50 controls the motor 10 to rotate the drum 2 at a constant speed at a rotation speed of 100 rpm.

＜步骤S304＞<Step S304>

步骤S304中，控制部50根据来自加速度传感器12的加速度信号，计算出滚筒2的一个旋转期间内的加速度变化量作为加速度传感器12的输出。In step S304, the control unit 50 calculates an acceleration change amount during one rotation period of the drum 2 as an output of the acceleration sensor 12 based on the acceleration signal from the acceleration sensor 12.

＜步骤S305＞<Step S305>

步骤S305中，控制部50根据马达10的电流值，计算出滚筒2的一个旋转期间内的电流变化量作为马达输出。In step S305, the control unit 50 calculates the amount of current change during one rotation period of the drum 2 based on the current value of the motor 10 as the motor output.

＜步骤S306＞<Step S306>

步骤S306中，控制部50判定在步骤S305中计算出的马达输出是否为第一阈值以上。在马达输出为第一阈值以上的情况下，进入步骤S307。在马达输出小于第一阈值的情况下，进入步骤S315。In step S306, the control unit 50 determines whether the motor output calculated in step S305 is equal to or greater than the first threshold. When the motor output is equal to or greater than the first threshold, the process proceeds to step S307. When the motor output is smaller than the first threshold, the process proceeds to step S315.

＜步骤S307＞<Step S307>

步骤S307中，控制部50判定在步骤S304中计算出的加速度输出是否为第二阈值以上。在加速度输出小于第二阈值的情况下，进入步骤S308。在加速度输出为第二阈值以上的情况下，进入步骤S311。In step S307, the control unit 50 determines whether the acceleration output calculated in step S304 is equal to or greater than a second threshold. When the acceleration output is smaller than the second threshold, the process proceeds to step S308. When the acceleration output is equal to or greater than the second threshold, the process proceeds to step S311.

＜步骤S308、S309、S310＞<Steps S308, S309, S310>

步骤S308中，加速度输出小于第二阈值，因此控制部50判断为偏心载荷位置位于滚筒2的靠后的位置，进入步骤S309。在步骤S309中，控制部50计算出将第一阈值(A)乘以1.2所得的值(1.2A)，使得第一阈值的值增大至比在S306中使用的第一阈值(A)的值大的值，进入步骤S310。在步骤S310中，控制部50将第一阈值的值更新为在S309中计算出的值，进入步骤S314。In step S308, the acceleration output is less than the second threshold value. Therefore, the control unit 50 determines that the position of the eccentric load is located at the rear position of the drum 2, and proceeds to step S309. In step S309, the control unit 50 calculates a value (1.2A) obtained by multiplying the first threshold value (A) by 1.2, so that the value of the first threshold value becomes larger than that of the first threshold value (A) used in S306. If the value is larger, the process proceeds to step S310. In step S310, the control unit 50 updates the value of the first threshold value to the value calculated in S309, and proceeds to step S314.

在本实施方式的滚筒洗衣机1中，在马达输出为第一阈值以上时，加速度输出小于第二阈值的情况下，控制部50以使第一阈值的值增大的方式更新第一阈值，再次判定加速度输出的值是否为第一阈值以上。In the drum washing machine 1 according to the present embodiment, when the motor output is greater than or equal to the first threshold value and the acceleration output is less than the second threshold value, the control unit 50 updates the first threshold value so as to increase the value of the first threshold value, and again It is determined whether the value of the acceleration output is greater than or equal to the first threshold.

如此一来，本实施方式的滚筒洗衣机1中，在处于滚筒2的振动不会直接传递给洗衣机主体1a的状况的情况下，通过增大第一阈值的值并再次进行判定，从而降低脱水过程被中断的可能性。由此，能提高滚筒洗衣机1的运转效率。In this way, in the drum washing machine 1 according to this embodiment, in a state where the vibration of the drum 2 is not directly transmitted to the washing machine main body 1a, the value of the first threshold is increased and the judgment is performed again to reduce the dehydration process. The possibility of being interrupted. Thereby, the operation efficiency of the drum washing machine 1 can be improved.

＜步骤S311、S312、S313＞<Steps S311, S312, S313>

步骤S311中，加速度输出为第二阈值以上，因此控制部50判断为偏心载荷位置位于滚筒2的靠前的位置，进入步骤S312。在步骤S312中，控制部50以使第一阈值的值不变化计算出将在S306中使用的第一阈值(A)乘以1所得的值(A)，使得第一阈值为同一值，进入步骤S313。步骤S313中，控制部50将第一阈值更新为在步骤S312中计算出的值，进入步骤S314。In step S311, the acceleration output is equal to or greater than the second threshold. Therefore, the control unit 50 determines that the position of the eccentric load is located at the front position of the drum 2, and proceeds to step S312. In step S312, the control unit 50 calculates a value (A) obtained by multiplying the first threshold value (A) used in S306 by 1 so that the value of the first threshold value does not change, so that the first threshold value is the same value. Step S313. In step S313, the control unit 50 updates the first threshold value to the value calculated in step S312, and proceeds to step S314.

本实施方式的滚筒洗衣机1中，在马达10的输出为第一阈值以上且加速度传感器12的输出为第二阈值以上的情况下，阈值更新部55以不增大第一阈值的值的方式更新第一阈值。In the drum washing machine 1 according to this embodiment, when the output of the motor 10 is equal to or greater than the first threshold and the output of the acceleration sensor 12 is equal to or greater than the second threshold, the threshold update unit 55 updates the value so as not to increase the value of the first threshold. First threshold.

在马达10的输出为第一阈值以上且加速度传感器12的输出为第二阈值以上的情况下，滚筒2的后端部的振动大，并且滚筒2的前端部的振动也大。由此，当使滚筒2的转速上升时，滚筒2的振动会直接传递给洗衣机主体1a，在滚筒洗衣机1中产生振动、噪声。因此，本实施方式的滚筒洗衣机1中，设置为通过不增大第一阈值从而不降低脱水过程被中断的可能性。When the output of the motor 10 is equal to or greater than the first threshold and the output of the acceleration sensor 12 is equal to or greater than the second threshold, the vibration of the rear end portion of the drum 2 is large, and the vibration of the front end portion of the drum 2 is also large. Therefore, when the rotation speed of the drum 2 is increased, the vibration of the drum 2 is directly transmitted to the washing machine main body 1 a, and vibration and noise are generated in the drum washing machine 1. Therefore, in the drum washing machine 1 of the present embodiment, it is set not to reduce the possibility that the dehydration process is interrupted by not increasing the first threshold value.

＜步骤S314、S315、S316＞<Steps S314, S315, S316>

步骤S314中，控制部50判定马达输出是否为在步骤S310或S313中更新的第一阈值以上。控制部50在马达输出小于第一阈值的情况下，进入步骤S315，使滚筒2的转速上升，加速脱水，进入步骤S317。控制部50在马达输出为第一阈值以上的情况下，进入步骤S316，停止滚筒2的旋转，停止脱水。In step S314, the control unit 50 determines whether the motor output is equal to or greater than the first threshold value updated in step S310 or S313. When the output of the motor is less than the first threshold, the control unit 50 proceeds to step S315 to increase the rotation speed of the drum 2 to accelerate dehydration, and proceeds to step S317. When the motor output is greater than or equal to the first threshold, the control unit 50 proceeds to step S316 to stop the rotation of the drum 2 and stop dehydration.

＜步骤S317＞〈Step S317〉

步骤S317中，控制部50判断滚筒2的转速是否达到了预定的目标转速。如果达到了目标转速，则控制部50将滚筒2的转速维持预定的时间之后，结束脱水过程。在未达到目标转速的情况下，控制部50进入步骤S315。In step S317, the control unit 50 determines whether the rotation speed of the drum 2 has reached a predetermined target rotation speed. When the target rotation speed is reached, the control unit 50 maintains the rotation speed of the drum 2 for a predetermined time, and then ends the dehydration process. When the target rotation speed has not been reached, the control unit 50 proceeds to step S315.

在本实施方式的滚筒洗衣机1中，在控制部50判定马达的输出为第一阈值以上，在不使滚筒2的转速上升之后，以增大的方式更新第一阈值的值，在马达10的输出小于更新后的第一阈值的情况下，判定为使滚筒2的转速上升。In the drum washing machine 1 of the present embodiment, the control unit 50 determines that the output of the motor is equal to or higher than the first threshold value, and after the rotation speed of the drum 2 is not increased, the value of the first threshold value is updated in an increasing manner. When the output is smaller than the updated first threshold value, it is determined that the rotation speed of the drum 2 is increased.

由此，本实施方式的滚筒洗衣机1中，在判定马达10的输出为第一阈值而不使滚筒2的转速上升之后，在判断为偏心载荷位置位于后端侧的情况下，能以增大的方式更新第一阈值，使滚筒2的转速上升，继续脱水过程。由此，能提高滚筒洗衣机1的运转效率。Therefore, in the drum washing machine 1 according to the present embodiment, after determining that the output of the motor 10 is the first threshold value without increasing the rotation speed of the drum 2, when it is determined that the eccentric load position is on the rear end side, it is possible to increase The first threshold value is updated in a manner to increase the rotation speed of the drum 2 and continue the dehydration process. Thereby, the operation efficiency of the drum washing machine 1 can be improved.

如上所述，本实施方式的滚筒洗衣机1中，在脱水过程中，即使马达输出为第一阈值以上，也不会立即停止脱水，而是判定滚筒2的前端部的振动是大还是小。在滚筒2的前端部的振动小的情况下，以增大的方式更新第一阈值，将马达输出与更新后的第一阈值进行比较，在马达输出为更新后的第一阈值以上时，停止脱水。在滚筒2的前端部的振动大的情况下，以不变化的方式更新第一阈值，将马达输出与更新后的第一阈值进行比较，马达输出为更新后的第一阈值以上时，停止脱水。As described above, in the drum washing machine 1 according to this embodiment, in the dehydration process, even if the motor output is equal to or higher than the first threshold value, the dehydration is not stopped immediately, but whether the vibration of the front end portion of the drum 2 is large or small is determined. When the vibration of the front end portion of the drum 2 is small, the first threshold value is updated in an increasing manner, the motor output is compared with the updated first threshold value, and the motor stops when the motor output is greater than the updated first threshold value. Dehydration. When the vibration of the front end portion of the drum 2 is large, the first threshold value is updated without change, and the motor output is compared with the updated first threshold value. When the motor output is greater than the updated first threshold value, the dehydration is stopped. .

因此，现有的滚筒洗衣机中，无论洗涤物在滚筒2内如何偏移，第一阈值都相同，在脱水过程中，在马达输出为第一阈值以上的情况下，立即停止脱水，与此相对，本实施方式的滚筒洗衣机1中，在脱水过程中，即使马达输出为第一阈值以上，也能在滚筒2的前端部的振动小的情况下，通过以增大的方式更新第一阈值，从而在马达输出小于更新后的第一阈值时继续脱水。因此，能在不影响振动、噪声的范围内继续脱水运转，因而，能提高滚筒洗衣机1的运转效率。Therefore, in the conventional drum washing machine, the first threshold value is the same regardless of how the laundry is shifted in the drum 2. In the dehydration process, when the motor output is above the first threshold value, the dehydration is stopped immediately. In the drum washing machine 1 of this embodiment, even if the motor output is above the first threshold during the dehydration process, the first threshold can be updated in an increased manner when the vibration at the front end portion of the drum 2 is small. Therefore, when the motor output is less than the updated first threshold value, the dehydration is continued. Therefore, the dehydration operation can be continued within a range that does not affect vibration and noise, and therefore, the operation efficiency of the drum washing machine 1 can be improved.

(第二实施方式)(Second Embodiment)

对本发明的第二实施方式进行说明。A second embodiment of the present invention will be described.

本实施方式的滚筒洗衣机100与第一实施方式的滚筒洗衣机1主要的不同点在于，第一实施方式中，计算马达输出和加速度输出时的滚筒2的转速相同，与此相对，本实施方式中，为了确定第一阈值而计算马达输出和加速度输出时的滚筒2的转速不同。对于本实施方式的滚筒洗衣机100的结构中与第一实施方式的滚筒洗衣机1相同的结构省略说明。The main difference between the drum washing machine 100 of the present embodiment and the drum washing machine 1 of the first embodiment is that in the first embodiment, the rotation speed of the drum 2 is the same when calculating the motor output and the acceleration output. In contrast, in this embodiment, In order to determine the first threshold, the rotation speed of the drum 2 when calculating the motor output and the acceleration output is different. The configuration of the drum washing machine 100 according to the present embodiment that is the same as that of the drum washing machine 1 according to the first embodiment will not be described.

基于图8对本实施方式的滚筒洗衣机100的脱水过程的动作进行说明。图8是表示本发明的第二实施方式的滚筒洗衣机100的脱水过程的动作的流程图。The operation of the spin-drying process of the drum washing machine 100 according to this embodiment will be described based on FIG. 8. FIG. 8 is a flowchart showing the operation of the spin-drying process of the drum washing machine 100 according to the second embodiment of the present invention.

＜步骤S401、S402＞<Steps S401 and S402>

步骤S401中，当脱水过程开始时，控制部50控制马达10，对滚筒2进行旋转驱动。步骤S402中，控制部50反复判断滚筒2的转速是否达到了100rpm。在滚筒2的转速达到100rpm的情况下，进入步骤S403。In step S401, when the dehydration process is started, the control unit 50 controls the motor 10 to rotate and drive the drum 2. In step S402, the control unit 50 repeatedly determines whether the rotation speed of the drum 2 has reached 100 rpm. When the rotation speed of the drum 2 reaches 100 rpm, the process proceeds to step S403.

＜步骤S403＞<Step S403>

步骤S403中，控制部50控制马达10，使滚筒2以100rpm的转速恒速旋转。In step S403, the control unit 50 controls the motor 10 to rotate the drum 2 at a constant speed at a rotation speed of 100 rpm.

＜步骤S404＞<Step S404>

步骤S404中，控制部50在滚筒2以100rpm的转速恒速旋转的状态下，根据马达10的电流值，计算出滚筒2的一个旋转期间内的电流变化量作为马达输出。In step S404, the control unit 50 calculates the amount of current change during one rotation period of the drum 2 as the motor output based on the current value of the motor 10 while the drum 2 is rotating at a constant speed of 100 rpm.

＜步骤S405、S406、S407＞<Steps S405, S406, S407>

步骤S405中，控制部50判定步骤S404中计算出的马达输出是否为第一阈值以上。在马达输出为第一阈值以上的情况下，进入步骤S407，控制部50停止滚筒2的旋转，停止脱水。在马达输出小于第一阈值的情况下，进入步骤S406，控制部50使滚筒2的转速上升，加速脱水。In step S405, the control unit 50 determines whether the motor output calculated in step S404 is equal to or greater than the first threshold. When the motor output is greater than or equal to the first threshold, the process proceeds to step S407, and the control unit 50 stops the rotation of the drum 2 and stops the dehydration. When the motor output is less than the first threshold, the process proceeds to step S406, and the control unit 50 increases the rotation speed of the drum 2 to accelerate dehydration.

＜步骤S408＞〈Step S408〉

在步骤S406中脱水加速之后，步骤S408中，控制部50反复判断滚筒2的转速是否达到了200rpm。在滚筒2的转速达到200rpm的情况下，进入步骤S409。After the dehydration is accelerated in step S406, the control unit 50 repeatedly determines whether the rotation speed of the drum 2 has reached 200 rpm in step S408. When the rotation speed of the drum 2 reaches 200 rpm, the process proceeds to step S409.

＜步骤S409＞<Step S409>

步骤S409中，控制部50控制马达10，使滚筒2以200rpm的转速恒速旋转。In step S409, the control unit 50 controls the motor 10 to rotate the drum 2 at a constant speed at a rotation speed of 200 rpm.

＜步骤S410＞<Step S410>

步骤S410中，控制部50根据来自加速度传感器12的加速度信号，计算出滚筒2的一个旋转期间内的加速度变化量作为加速度传感器12的输出。In step S410, the control unit 50 calculates the acceleration change amount during one rotation period of the drum 2 as the output of the acceleration sensor 12 based on the acceleration signal from the acceleration sensor 12.

＜步骤S411＞<Step S411>

步骤S411中，控制部50判定步骤S410中计算出的加速度输出是否为第二阈值以上。在加速度输出小于第二阈值的情况下，进入步骤S412。在加速度输出为第二阈值以上的情况下，进入步骤S415。In step S411, the control unit 50 determines whether the acceleration output calculated in step S410 is equal to or greater than a second threshold. When the acceleration output is smaller than the second threshold, the process proceeds to step S412. When the acceleration output is greater than or equal to the second threshold, the process proceeds to step S415.

＜步骤S412、S413、S414＞<Steps S412, S413, S414>

步骤S412中，加速度输出小于第二阈值，因此控制部50判断为偏心载荷位置位于滚筒2的靠后的位置，进入步骤S413。在步骤S413中，控制部50以得第一阈值的值增大至比在步骤S405中使用的第一阈值(A)大的值的方式计算出将第一阈值(A)乘以1.2所得的值(1.2A)。然后，进入步骤S414。在步骤S414中，控制部50将第一阈值更新为在步骤S413中计算出的值。In step S412, the acceleration output is less than the second threshold. Therefore, the control unit 50 determines that the position of the eccentric load is located at the rear position of the drum 2, and proceeds to step S413. In step S413, the control unit 50 calculates a value obtained by multiplying the first threshold value (A) by 1.2 so that the value of the first threshold value increases to a value larger than the first threshold value (A) used in step S405. Value (1.2A). Then, the process proceeds to step S414. In step S414, the control unit 50 updates the first threshold value to the value calculated in step S413.

如此一来，本实施方式的滚筒洗衣机100中，在处于滚筒的振动不会直接传递给洗衣机主体1a的状况的情况下，通过增大第一阈值的值并再次进行判定，从而降低脱水过程被中断的可能性。由此，能提高滚筒洗衣机100的运转效率。In this way, in the drum washing machine 100 according to this embodiment, when the vibration of the drum is not directly transmitted to the washing machine main body 1a, the value of the first threshold is increased and the judgment is performed again to reduce the dehydration process. The possibility of disruption. Thereby, the operation efficiency of the drum washing machine 100 can be improved.

＜步骤S415、S416、S417＞<Steps S415, S416, S417>

步骤S415中，加速度输出为第二阈值以上，因此控制部50判断为偏心载荷位置位于滚筒2的靠前的位置，进入步骤S416。在步骤S416中，控制部50以使第一阈值的值不变化的方式计算出将在步骤S405中使用的第一阈值(A)乘以1所得的值(A)。然后，进入步骤S417。在步骤S417中，控制部50将第一阈值更新为在步骤S416中计算出的值。In step S415, the acceleration output is equal to or greater than the second threshold. Therefore, the control unit 50 determines that the position of the eccentric load is located in the front position of the drum 2, and proceeds to step S416. In step S416, the control unit 50 calculates a value (A) obtained by multiplying the first threshold (A) used in step S405 by 1 so that the value of the first threshold does not change. Then, the process proceeds to step S417. In step S417, the control unit 50 updates the first threshold value to the value calculated in step S416.

在加速度输出为第二阈值以上的情况下，滚筒2的后端部的振动大，并且滚筒2的前端部的振动也大。由此，当滚筒2的转速上升时，滚筒2的振动会直接传递给洗衣机主体1a，在滚筒洗衣机100中产生振动、噪声。因此，本实施方式的滚筒洗衣机100设置为通过不增大第一阈值从而可靠地中断脱水过程。When the acceleration output is equal to or greater than the second threshold value, the vibration at the rear end portion of the drum 2 is large, and the vibration at the front end portion of the drum 2 is also large. Therefore, when the rotation speed of the drum 2 is increased, the vibration of the drum 2 is directly transmitted to the washing machine body 1 a, and vibration and noise are generated in the drum washing machine 100. Therefore, the drum washing machine 100 of the present embodiment is provided to reliably interrupt the dehydration process by not increasing the first threshold value.

＜步骤S418＞〈Step S418〉

步骤S418中，控制部50在滚筒2以200rpm的转速恒速旋转的状态下，根据马达10的电流值，计算出滚筒2的一个旋转期间内的电流变化量作为马达输出。In step S418, the control unit 50 calculates the amount of current change during one rotation period of the drum 2 as the motor output based on the current value of the motor 10 while the drum 2 is rotating at a constant speed of 200 rpm.

＜步骤S419、S420、S421＞<Steps S419, S420, S421>

步骤S419中，控制部50判定步骤S418中计算出的马达输出是否为步骤S414、S417中更新的第一阈值以上。在步骤S418中计算出的马达输出小于第一阈值的情况下，进入步骤S420，控制部50使滚筒2的转速上升，加速脱水，进入步骤S422。在步骤S418中计算出的马达输出为第一阈值以上的情况下，进入步骤S421，控制部50停止滚筒2的旋转，停止脱水。In step S419, the control unit 50 determines whether the motor output calculated in step S418 is equal to or greater than the first threshold value updated in steps S414 and S417. When the motor output calculated in step S418 is less than the first threshold, the process proceeds to step S420, and the control unit 50 increases the rotation speed of the drum 2 to accelerate dehydration, and proceeds to step S422. When the motor output calculated in step S418 is equal to or greater than the first threshold, the process proceeds to step S421, and the control unit 50 stops the rotation of the drum 2 and stops the dehydration.

＜步骤S422＞〈Step S422〉

步骤S422中，控制部50判断滚筒2的转速是否达到了预定的目标转速。如果达到了目标转速，则控制部50将滚筒2的转速维持预定的时间之后，结束脱水过程。在未达到目标转速的情况下，控制部50进入步骤S420In step S422, the control unit 50 determines whether the rotation speed of the drum 2 has reached a predetermined target rotation speed. When the target rotation speed is reached, the control unit 50 maintains the rotation speed of the drum 2 for a predetermined time, and then ends the dehydration process. When the target rotation speed has not been reached, the control unit 50 proceeds to step S420.

本实施方式的滚筒洗衣机100中，在通过脱水加速判定部56判定为滚筒2的转速为第一转速时的马达10的输出小于第一阈值并控制滚筒2的转速上升至大于第一转速的第二转速的情况下，阈值更新部55根据滚筒2的转速为第二转速时的加速度传感器12的加速度输出来更新第一阈值。In the drum washing machine 100 according to the present embodiment, when the dehydration acceleration determination unit 56 determines that the rotation speed of the drum 2 is the first rotation speed, the output of the motor 10 is smaller than the first threshold value, and the rotation speed of the drum 2 is controlled to increase to the first rotation speed greater than In the case of two rotation speeds, the threshold update unit 55 updates the first threshold value based on the acceleration output of the acceleration sensor 12 when the rotation speed of the drum 2 is the second rotation speed.

由此，本实施方式的滚筒洗衣机100中，在由于马达10的输出小于第一阈值而使滚筒2的转速上升时，根据加速度传感器12的输出更新第一阈值。马达10的输出在滚筒2的转速越低时输出越明确，与此相对，加速度传感器12的输出随着滚筒2的转速的上升而输出越明确。因此，根据加速度传感器12的输出，能更明确地检测出滚筒2的前端部的振动，因而能将第一阈值更新为更合适的值。Therefore, in the drum washing machine 100 according to this embodiment, when the rotation speed of the drum 2 is increased because the output of the motor 10 is smaller than the first threshold value, the first threshold value is updated based on the output of the acceleration sensor 12. As the output of the motor 10 becomes clearer as the rotation speed of the drum 2 decreases, the output of the acceleration sensor 12 becomes clearer as the rotation speed of the drum 2 increases. Therefore, since the vibration of the front-end | tip part of the drum 2 can be detected more clearly based on the output of the acceleration sensor 12, the 1st threshold value can be updated to a more appropriate value.

如上所述，本实施方式的滚筒洗衣机100中，在脱水过程中，在马达输出小于第一阈值的情况下，即使使滚筒2的转速上升而加速脱水，之后也能通过使滚筒2的转速的上升而在马达输出为第一阈值以上时停止脱水。这时，在滚筒2的前端部的振动小的情况下，以增大的方式更新第一阈值。因此，现有的滚筒洗衣机中，无论洗涤物在滚筒2内如何偏移，第一阈值都相同，在脱水工程中，在马达输出为第一阈值以上的情况下停止脱水，与此相对，本实施方式的滚筒洗衣机100中，在脱水过程中，根据加速度输出更新第一阈值。因此，与无论洗涤物在滚筒2内如何偏移第一阈值都相同的情况相比，本实施方式的滚筒洗衣机100能提高滚筒洗衣机100的运转效率。As described above, in the drum washing machine 100 according to this embodiment, during the dehydration process, when the motor output is less than the first threshold, even if the rotation speed of the drum 2 is increased to accelerate dehydration, the rotation speed of the drum 2 Rise and stop dehydration when the motor output is above the first threshold. At this time, when the vibration of the front end portion of the drum 2 is small, the first threshold value is updated so as to increase. Therefore, in the conventional drum washing machine, the first threshold value is the same regardless of how the laundry is shifted in the drum 2. In the dehydration process, the dehydration is stopped when the motor output is above the first threshold value. In the drum washing machine 100 according to the embodiment, the first threshold value is updated according to the acceleration output during the dehydration process. Therefore, the drum washing machine 100 according to the present embodiment can improve the operation efficiency of the drum washing machine 100 as compared with a case where the laundry is shifted from the first threshold value in the drum 2.

这里存在一个特性，即马达10的输出在滚筒2的转速越低时输出越明确，与此相对，加速度传感器12的输出随着滚筒2的转速的上升而输出越明确。因此，本实施方式的滚筒洗衣机100中，为了明确地输出马达10的输出，在滚筒2的转速较低时进行计算，为了更明确地输出加速度传感器12的输出，在滚筒2的转速较高时进行计算。因此，根据加速度传感器12的输出，能更明确地检测出滚筒2的前端部的振动，因此能将第一阈值更新为更合适的值。Here, there is a characteristic that the output of the motor 10 becomes clearer as the rotational speed of the drum 2 is lower, while the output of the acceleration sensor 12 becomes clearer as the rotational speed of the drum 2 increases. Therefore, in the drum washing machine 100 of this embodiment, in order to explicitly output the output of the motor 10, calculation is performed when the rotation speed of the drum 2 is low, and in order to more clearly output the output of the acceleration sensor 12, when the rotation speed of the drum 2 is high, Calculation. Therefore, since the vibration of the front-end | tip part of the drum 2 can be detected more clearly based on the output of the acceleration sensor 12, the 1st threshold value can be updated to a more appropriate value.

(第三实施方式)(Third Embodiment)

对本发明的第三实施方式进行说明。A third embodiment of the present invention will be described.

本实施方式的滚筒洗衣机200与第一实施方式的滚筒洗衣机1主要的不同点在于，第一实施方式中，计算马达输出和加速度输出时的滚筒2的转速相同，与此相对，本实施方式中，为了确定第一阈值而计算马达输出和加速度输出时的滚筒2的转速不同，基于加速度输出的第一阈值的更新方法不同。对于本实施方式的滚筒洗衣机200的结构中与第一实施方式的滚筒洗衣机1(以及第二实施方式的滚筒洗衣机100)相同的结构省略说明。The main difference between the drum washing machine 200 of the present embodiment and the drum washing machine 1 of the first embodiment is that in the first embodiment, the rotation speed of the drum 2 is the same when calculating the motor output and the acceleration output. In order to determine the first threshold, the rotation speed of the drum 2 when calculating the motor output and the acceleration output is different, and the method of updating the first threshold based on the acceleration output is different. The configuration of the drum washing machine 200 according to this embodiment that is the same as that of the drum washing machine 1 according to the first embodiment (and the drum washing machine 100 according to the second embodiment) is not described.

基于图9对本实施方式的滚筒洗衣机200的脱水过程的动作进行说明。图9是表示本发明的第三实施方式的滚筒洗衣机200的脱水过程的动作的流程图。图9的步骤S501～S512、S515、S519～S521与图8的步骤S401～S412、S415、S420～S422相同，图9的步骤S513、S514、S516、S517、S518与图8的步骤S413、S414、S416、S417、S419不同，在图9中没有图8的步骤S418的处理，这一点上不同。The operation of the spin-drying process of the drum washing machine 200 according to this embodiment will be described based on FIG. 9. FIG. 9 is a flowchart showing the operation of the spin-drying process of the drum washing machine 200 according to the third embodiment of the present invention. Steps S501 to S512, S515, S519 to S521 of FIG. 9 are the same as steps S401 to S412, S415, S420 to S422 of FIG. 8, and steps S513, S514, S516, S517, and S518 of FIG. 9 are the same as steps S413 and S414 of FIG. , S416, S417, and S419 are different, and there is no processing in step S418 of FIG. 8 in FIG. 9, which is different in this point.

＜步骤S511＞<Step S511>

步骤S511中，控制部50判定步骤S510中计算出的加速度输出是否为第二阈值以上。在加速度输出小于第二阈值的情况下，进入步骤S512。在加速度输出是第二阈值以上的情况下，进入步骤S515。In step S511, the control unit 50 determines whether the acceleration output calculated in step S510 is equal to or greater than a second threshold. When the acceleration output is smaller than the second threshold, the process proceeds to step S512. When the acceleration output is equal to or greater than the second threshold, the process proceeds to step S515.

＜步骤S512、S513、S514＞<Steps S512, S513, S514>

步骤S512中，加速度输出小于第二阈值，因此控制部50判断为偏心载荷位置位于滚筒2的靠后的位置，进入步骤S513。在步骤S513中，控制部50以第一阈值的值不变化的方式计算出将步骤S505的第一阈值(A)乘以1所得的值(A)，进入步骤S514。在步骤S514中，控制部50将第一阈值更新为在步骤S513中计算出的值。In step S512, the acceleration output is less than the second threshold. Therefore, the control unit 50 determines that the position of the eccentric load is located at the rear position of the drum 2, and proceeds to step S513. In step S513, the control unit 50 calculates a value (A) obtained by multiplying the first threshold (A) of step S505 by 1 so that the value of the first threshold does not change, and proceeds to step S514. In step S514, the control unit 50 updates the first threshold value to the value calculated in step S513.

＜步骤S515、S516、S517＞<Steps S515, S516, S517>

步骤S515中，加速度输出为第二阈值以上，因此控制部50判断为偏心载荷位置位于滚筒2的靠前的位置，进入步骤S516。在步骤S516中，控制部50计算出将步骤S505的第一阈值(A)乘以0.8所得的值(0.8A)，从而减小第一阈值的值。然后，进入步骤S517。在步骤S517中，控制部50将第一阈值更新为在步骤S516中计算出的值。In step S515, the acceleration output is equal to or greater than the second threshold. Therefore, the control unit 50 determines that the position of the eccentric load is located in the front position of the drum 2, and proceeds to step S516. In step S516, the control unit 50 calculates a value (0.8A) obtained by multiplying the first threshold value (A) in step S505 by 0.8, thereby reducing the value of the first threshold value. Then, the process proceeds to step S517. In step S517, the control unit 50 updates the first threshold value to the value calculated in step S516.

＜步骤S518、S519、S520＞<Steps S518, S519, S520>

在步骤S518中，判定步骤S504中计算出的马达输出是否为步骤S514、S517中更新的第一阈值以上。在步骤S504中计算出的马达输出小于第一阈值的情况下，进入步骤S519，控制部50使滚筒2的转速上升，加速脱水，进入步骤S521。在步骤S504中计算出的马达输出为第一阈值以上的情况下，进入步骤S520，控制部50停止滚筒2的旋转，停止脱水。In step S518, it is determined whether the motor output calculated in step S504 is equal to or more than the first threshold value updated in steps S514 and S517. When the motor output calculated in step S504 is less than the first threshold, the process proceeds to step S519, and the control unit 50 increases the rotation speed of the drum 2 to accelerate dehydration, and proceeds to step S521. When the motor output calculated in step S504 is equal to or greater than the first threshold, the process proceeds to step S520, and the control unit 50 stops the rotation of the drum 2 and stops the dehydration.

＜步骤S521＞<Step S521>

步骤S521中，控制部50判断滚筒2的转速是否达到了预定的目标转速。如果达到了目标转速，则控制部50将滚筒2的转速维持预定的时间之后，结束脱水过程。在未达到目标转速的情况下，控制部50进入步骤S519。In step S521, the control unit 50 determines whether the rotation speed of the drum 2 has reached a predetermined target rotation speed. When the target rotation speed is reached, the control unit 50 maintains the rotation speed of the drum 2 for a predetermined time, and then ends the dehydration process. When the target rotation speed has not been reached, the control unit 50 proceeds to step S519.

本实施方式的滚筒洗衣机200中，在通过脱水加速判定部56判定为滚筒2的转速为第一转速时的马达10的输出小于第一阈值且控制滚筒2的转速上升至大于第一转速的第二转速的情况下，阈值更新部55根据滚筒2的转速为第二转速时的加速度传感器12的输出，更新第一阈值。In the drum washing machine 200 according to the present embodiment, when the dehydration acceleration determination unit 56 determines that the rotation speed of the drum 2 is the first rotation speed, the output of the motor 10 is less than the first threshold value and the rotation speed of the control drum 2 is increased to a level greater than the first rotation speed. In the case of two rotation speeds, the threshold update unit 55 updates the first threshold value based on the output of the acceleration sensor 12 when the rotation speed of the drum 2 is the second rotation speed.

加速度传感器12的输出随着滚筒2的转速的上升而被更明确地输出。因此，本实施方式的滚筒洗衣机200中，第一阈值在滚筒2的转速上升之后，根据加速度传感器12的输出被更新为更合适的值。The output of the acceleration sensor 12 is more clearly output as the rotation speed of the drum 2 increases. Therefore, in the drum washing machine 200 of the present embodiment, the first threshold value is updated to a more appropriate value based on the output of the acceleration sensor 12 after the rotation speed of the drum 2 is increased.

本实施方式的滚筒洗衣机200中，在控制部50判定为使滚筒2的转速上升之后，以减小的方式更新第一阈值，在马达10的输出为更新后的第一阈值以上的情况下，判定为不使滚筒2的转速上升。In the drum washing machine 200 of the present embodiment, after the control unit 50 determines that the rotation speed of the drum 2 is increased, the first threshold value is updated in a decreasing manner. When the output of the motor 10 is equal to or greater than the updated first threshold value, It is determined that the rotation speed of the drum 2 is not increased.

由此，本实施方式的滚筒洗衣机200中，马达10的输出小于第一阈值，因此在使滚筒2的转速上升之后，当判断为偏心载荷位置位于前端侧时，以减小的方式更新第一阈值，从而使滚筒2的转速不上升，中断脱水过程。由此，能防止在滚筒洗衣机200中产生振动、噪声。Therefore, in the drum washing machine 200 of the present embodiment, the output of the motor 10 is smaller than the first threshold value. Therefore, after the rotation speed of the drum 2 is increased, when the eccentric load position is determined to be on the front end side, the first is updated in a reduced manner. Threshold value, so that the rotation speed of the drum 2 does not increase, and the dehydration process is interrupted. This can prevent vibration and noise from being generated in the drum washing machine 200.

需要说明的是，第二实施方式(图8)中，步骤S419中，判定滚筒2以200rpm的转速恒速旋转的状态的马达输出是否为第一阈值以上，与此相对，本实施方式(图9)中，在步骤S518中，判定滚筒2以100rpm的转速恒速旋转的状态的马达输出是否为第一阈值以上。It should be noted that, in the second embodiment (FIG. 8), in step S419, it is determined whether the motor output in a state where the drum 2 is rotating at a constant speed of 200 rpm is equal to or greater than a first threshold. In contrast, this embodiment (FIG. 8) In 9), in step S518, it is determined whether or not the motor output in a state where the drum 2 is rotating at a constant speed of 100 rpm is equal to or greater than the first threshold.

如上所述，本实施方式的滚筒洗衣机200中，在脱水过程中，在马达输出小于第一阈值的情况下，即使使滚筒2的转速上升而加速脱水，之后也能根据加速度传感器12的输出，将第一阈值更新为更合适的值，在马达输出达到第一阈值以上时停止脱水。As described above, in the drum washing machine 200 of this embodiment, in the case where the motor output is less than the first threshold during the dehydration process, even if the rotation speed of the drum 2 is increased to accelerate the dehydration, the output of the acceleration sensor 12 can be based on The first threshold value is updated to a more appropriate value, and the dehydration is stopped when the motor output exceeds the first threshold value.

以上，对本发明的实施方式进行了说明，但各部分的具体结构不局限于上述的实施方式。As mentioned above, although embodiment of this invention was described, the specific structure of each part is not limited to the said embodiment.

例如，上述实施方式中，马达输出计算部51计算出滚筒2的一个旋转期间内的电流变化量作为马达输出，但是马达输出计算部51也可以计算出表示马达10的状态(例如负荷转矩)的马达输出。因此，马达输出计算部也可以计算出滚筒2的一个旋转期间内的速度变化量(旋转速度变化量)。For example, in the above embodiment, the motor output calculation unit 51 calculates the amount of current change during one rotation period of the drum 2 as the motor output, but the motor output calculation unit 51 may also calculate the state (for example, load torque) indicating the motor 10 Motor output. Therefore, the motor output calculation unit may calculate the speed change amount (rotation speed change amount) during one rotation period of the drum 2.

基于图10对计算出滚筒2的一个旋转期间内的速度变化量作为马达输出的方法进行说明。图10是表示马达输出的计算方法的变形例的图。滚筒2的一个旋转期间内的速度变化量的计算方法与滚筒2的一个旋转期间内的电流变化量的计算方法相同。A method of calculating the speed change amount during one rotation period of the drum 2 as the motor output will be described based on FIG. 10. FIG. 10 is a diagram showing a modified example of a calculation method of a motor output. The calculation method of the speed change amount during one rotation period of the drum 2 is the same as the calculation method of the current change amount during one rotation period of the drum 2.

＜步骤S601、S602＞<Steps S601, S602>

步骤S601中，控制部50获取马达10的速度(旋转速度)。步骤S602中，通过低通滤波器进行噪声处理。马达10的速度的波形具有最大值(max)和最小值(min)，是周期变化的波形。In step S601, the control unit 50 acquires the speed (rotational speed) of the motor 10. In step S602, noise processing is performed by a low-pass filter. The waveform of the speed of the motor 10 has a maximum value (max) and a minimum value (min), and is a waveform that changes periodically.

＜步骤S603＞〈Step S603〉

步骤S603中，控制部50根据马达10的速度的最大值(max)与最小值(min)之差，计算出滚筒2的一个旋转期间内的速度变化量。In step S603, the control unit 50 calculates the amount of speed change during one rotation period of the drum 2 based on the difference between the maximum value (max) and the minimum value (min) of the speed of the motor 10.

上述实施方式中，滚筒2设置为能绕沿水平方向延伸的轴线旋转，但是滚筒2也可以设置为能绕沿倾斜方向(与垂直方向倾斜的方向)延伸的轴线旋转。其他的结构也可以在不脱离本发明的技术精神的范围内进行各种变形。In the above embodiment, the drum 2 is provided to be rotatable about an axis extending in the horizontal direction, but the drum 2 may be provided to be rotatable about an axis extending in the oblique direction (the direction inclined to the vertical direction). Other structures can be variously modified without departing from the technical spirit of the present invention.

Claims

一种滚筒洗衣机，其特征在于，具备：A drum washing machine, comprising:

有底筒状的滚筒，设置为能绕沿水平方向或倾斜方向延伸的轴线旋转；A bottomed cylindrical roller set to be rotatable about an axis extending in a horizontal or inclined direction;

马达，经由从所述滚筒的底部突出的驱动轴对所述滚筒进行旋转驱动；A motor for rotationally driving the drum via a drive shaft protruding from the bottom of the drum;

加速度传感器，检测所述滚筒的前端部的加速度；An acceleration sensor that detects an acceleration of a front end portion of the drum;

更新单元，在脱水过程中更新与用于判定是否使所述滚筒的转速上升的所述马达的输出相关的第一阈值；以及An updating unit that updates a first threshold value related to the output of the motor for determining whether to increase the rotation speed of the drum during the dehydration process; and

判定单元，在脱水过程中，在所述马达的输出小于所述第一阈值的情况下，判定为使所述滚筒的转速上升，The determining unit determines that, when the output of the motor is smaller than the first threshold value in the dehydration process, the rotation speed of the drum is increased,

与所述加速度传感器的输出为第二阈值以上时相比，当所述加速度传感器的输出小于所述第二阈值时，所述滚筒以规定转速旋转时的所述第一阈值更大。Compared with when the output of the acceleration sensor is above the second threshold, when the output of the acceleration sensor is smaller than the second threshold, the first threshold when the drum rotates at a predetermined rotation speed is larger.
根据权利要求1所述的滚筒洗衣机，其特征在于，在所述马达的输出为所述第一阈值以上且所述加速度传感器的输出小于所述第二阈值的情况下，所述更新单元以使所述第一阈值的值增大的方式更新所述第一阈值。The drum washing machine according to claim 1, wherein, when the output of the motor is greater than the first threshold value and the output of the acceleration sensor is less than the second threshold value, the updating unit causes the The first threshold value is updated in a manner that the value of the first threshold value increases.
根据权利要求2所述的滚筒洗衣机，其特征在于，The drum washing machine according to claim 2, wherein:

在所述判定单元判定为所述马达的输出为所述第一阈值以上而不使所述滚筒的转速上升之后，通过所述更新单元，以使所述第一阈值增大的方式更新所述第一阈值，在所述马达的输出小于更新后的第一阈值的情况下，判定为使所述滚筒的转速上升。After the determining unit determines that the output of the motor is equal to or greater than the first threshold value without increasing the rotation speed of the drum, the update unit updates the first threshold value in a manner that increases the first threshold value The first threshold value is determined to increase the rotation speed of the drum when the output of the motor is less than the updated first threshold value.
根据权利要求1或2所述的滚筒洗衣机，其特征在于，The drum washing machine according to claim 1 or 2, wherein:

在所述马达的输出为所述第一阈值以上且所述加速度传感器的输出为所述第二阈值以上的情况下，所述更新单元以不增大所述第一阈值的值的方式更新所述第一阈值。When the output of the motor is equal to or greater than the first threshold and the output of the acceleration sensor is equal to or greater than the second threshold, the updating unit updates the data in a manner that does not increase the value of the first threshold. The first threshold is described.
根据权利要求1～4中任一项所述的滚筒洗衣机，其特征在于，The drum washing machine according to any one of claims 1 to 4, wherein:

在通过所述判定单元判定为所述滚筒的转速为第一转速时的所述马达的输出小于所述第一阈值并控制所述滚筒的转速上升至比第一转速大的第二转速的情况下，A case where the output of the motor when the rotation speed of the drum is determined to be the first rotation speed by the determination unit is smaller than the first threshold value and the rotation speed of the drum is controlled to rise to a second rotation speed greater than the first rotation speed under,

所述更新单元根据所述滚筒的转速为第二转速时的所述加速度传感器的输出来更新所述第一阈值。The updating unit updates the first threshold value according to an output of the acceleration sensor when the rotation speed of the drum is a second rotation speed.
根据权利要求5所述的滚筒洗衣机，其特征在于，The drum washing machine according to claim 5, wherein:

在所述判定单元判定为使所述滚筒的转速上升之后，通过所述更新单元，以使所述第一阈值以减小的方式更新所述第一阈值，在所述马达的输出为更新后的第一阈值以上的情况下，判定为不使所述滚筒的转速上升。After the determination unit determines that the rotation speed of the drum is increased, the first threshold value is updated in a decreasing manner by the update unit, and after the output of the motor is updated When the value is equal to or greater than the first threshold, it is determined that the rotation speed of the drum is not increased.
根据权利要求1～6中任一项所述的滚筒洗衣机，其特征在于，The drum washing machine according to any one of claims 1 to 6, wherein:

在所述加速度传感器的输出在所述滚筒的转速上升时不变化的情况下，所述更新单元以不增大所述第一阈值的值的方式更新所述第一阈值。In a case where the output of the acceleration sensor does not change when the rotation speed of the drum increases, the update unit updates the first threshold value so as not to increase the value of the first threshold value.