JP2022518651A - washing machine - Google Patents

Abstract

The present invention discloses a washing machine. The washing machine includes an inner tub for accommodating clothes, a motor for supplying power to the washing machine, and a pulsator installed in the inner tub and rotationally driven by the motors in an alternating forward and reverse manner. It also further includes at least two cleaning programs, in which the time per forward rotation of the pulsator is longer than the time per forward rotation of the pulsator in the first cleaning program. And / or the time per reverse rotation of the pulsator in the second wash program is longer than the time per reverse rotation of the pulsator in the first wash program. The present invention sets up two different cleaning programs, and in the second cleaning program, the time per forward / reverse rotation of the pulsator is longer than that in the first cleaning program, thereby preventing delicate clothing wear. Provide a washing machine to lower. As a result, damage to clothes due to frequent forward and reverse rotation of the pulsator is avoided, and the washing machine can normally wash delicate clothes such as cashmere and woolen fabric.

Description

The present invention belongs to the technical field of household electric appliances, and specifically relates to a washing machine.

As the standard of living continues to improve, the quality of life and the quality of the laundry experience are gradually increasing. In the conventional pulsator washing machine, a motor drives the pulsator (or the pulsator and the inner tub) to rotate in the forward and reverse directions frequently to promote water flow and clean clothes. However, with this type of cleaning method, the wear of clothes is large, and the clothes are easily damaged when washing clothes such as cashmere and woolen fabrics.

In a normal washing machine, a drainage motor is generally mounted on the bottom of the outer tub, and the drainage motor simultaneously switches the washing / dehydrating state of the speed reducer and controls the drain valve. In addition, in the conventional plan, in order to solve the problem that the wear of clothes increases due to frequent forward and reverse rotation of the pulsator (or the pulsator and the inner tank), an electric drain valve is generally added to the drain part. By doing so, it is used for control specialized in drainage. As a result, the conventional drainage motor can realize the control specialized for switching the cleaning / dehydrating state of the reducer. Through program control, the washing machine dehydrates the speed reducer of the washing machine by the operation of the drainage motor at the washing stage. As a result, the inner tank and the pulsator can be washed in the same direction and in the same direction, so that the wear of clothes is reduced.

Patent Document 1 discloses a pulsator washing machine and a control method. The pulsator washing machine includes an inner tub unit and a double rotor motor, and the inner tub unit includes an inner tub and a first pulsator and a second pulsator provided at the bottom of the inner tub. The double rotor motor is connected to the inner tank unit. Further, the double rotor motor includes a first rotor and a second rotor. In the double rotor motor, when the pulsator washing machine is in the washing mode, the first rotor is connected to the first pulsator, the second rotor is connected to the second pulsator, and the first pulsator and the second pulsator are operated in the first operation, respectively. It is configured to be driven to operate in at least one mode from the mode to the fourth operation mode. When the pulsator washing machine is in the dehydration mode, one of the first rotor and the second rotor is connected to the first pulsator, the second pulsator and the inner tub, and the first pulsator, the second pulsator and the inner tub are connected. Drive to rotate synchronously.

The above-mentioned conventional technique proposes a control method of a pulsator washing machine and a technical plan for forward / reverse alternating rotation washing of a pulsator, but there are the following two defects. First, in the case of synchronous / same-direction rotary washing, the wear of clothes is reduced, but in this state, the water flow is always inactive. Therefore, the cleaning effect of clothes by the water flow is insufficient, and the cleanliness is inferior. Secondly, in the case of synchronous / same-direction rotary cleaning, it is necessary to add an electric drain valve specialized for drain control. Therefore, the plan and the structure become complicated, and the cost increases.

Therefore, in order to improve the defects and defects of the prior art, two different cleaning programs are set, and in the second cleaning program, the time per forward / reverse rotation of the pulsator is longer than that in the first cleaning program. By doing so, it is necessary to provide a washing machine that reduces the wear of delicate clothes. As a result, damage to clothes due to frequent forward and reverse rotation of the pulsator is avoided, and the washing machine can normally wash delicate clothes such as cashmere and woolen fabric.

In view of the above, the present invention is proposed.

Chinese Patent Application No. 201510386727.2.

The technical problem to be solved by the present invention is to provide a washing machine that can solve the above-mentioned problems or at least partially solve the above-mentioned problems in order to solve the defects of the prior art. be.

In order to solve the above technical problems, the basic idea of the technical plan adopted in the present invention is as follows.

The washing machine includes an inner tub for accommodating clothes, a motor for supplying washing power to the washing machine, and a pulsator installed in the inner tub and rotationally driven by the motors in an alternating forward and reverse manner. It also further includes at least two cleaning programs, in which the time per forward rotation of the pulsator is longer than the time per forward rotation of the pulsator in the first cleaning program. And / or the time per reverse rotation of the pulsator in the second wash program is longer than the time per reverse rotation of the pulsator in the first wash program. In addition, in the second cleaning program, by setting a lower rotation speed and a longer turning time, the water flow is canceled by the sudden reverse rotation, and the cleaning liquid in the inner tank becomes inactive, resulting in the water flow. Avoid situations that interfere with the cleaning effect of clothing.

Moreover, the forward rotation speed of the pulsator in the second cleaning program is smaller than the forward rotation speed of the pulsator in the first cleaning program. And / or, the reverse rotation speed of the pulsator in the second cleaning program is smaller than the reverse rotation speed of the pulsator in the first cleaning program. In the second cleaning program, by setting a lower rotation speed and a longer turning time, the water flow is offset by the sudden reverse rotation, and the cleaning liquid in the inner tank becomes inactive, resulting in clothing by the water flow. Avoid situations that interfere with the cleaning effect of.

Further, in the second cleaning program, the time per forward rotation of the pulsator and / or the time per reverse rotation of the pulsator is longer than 5 seconds.

In one embodiment, the time per forward rotation of the pulsator and / or the time per reverse rotation of the pulsator does not exceed 2 minutes.

In another embodiment, in the second cleaning program, the forward rotation speed of the pulsator and / or the reverse rotation speed of the pulsator is 15-50 rpm.

Further, the stop time of the pulsator in the forward / reverse direction change process in the second washing program is longer than the stop time in the forward / reverse direction change process of the pulsator in the first washing program.

In one embodiment, in the second wash program, the stop time in the forward / reverse turning process of the pulsator is longer than 5 seconds.

Further, the washing machine is arranged so that the motor drives the inner tub and the pulsator to rotate in opposite directions during the washing process.

In the second cleaning program, the time per forward rotation of the inner tank is longer than the time per forward rotation of the inner tank in the first cleaning program. And / or in the second cleaning program, the time per reverse rotation of the inner tank is longer than the time per reverse rotation of the inner tank in the first cleaning program.

In one embodiment, the time per forward rotation and / or reverse rotation of the inner tank in the second cleaning program is longer than 5 seconds.

In one embodiment, the time per forward rotation of the inner tank and / or each reverse rotation of the inner tank in the second cleaning program does not exceed 2 minutes.

Further, in the second cleaning program, the speed of forward rotation of the inner tank is smaller than the speed of forward rotation of the inner tank in the first cleaning program. And / or, the speed of reverse rotation of the inner tank in the second cleaning program is smaller than the speed of reverse rotation of the inner tank in the first cleaning program.

In one embodiment, the speed of forward rotation and / or reverse rotation of the inner tank in the second cleaning program is 5 to 20 rpm.

Further, in the second cleaning program, the rotation speed of the inner tank is lower than the rotation speed of the pulsator.

Further, in the second cleaning program, the stop time in the forward / reverse direction change process of the inner tank is longer than the stop time in the forward / reverse direction change process of the inner tank in the first cleaning program.

In one embodiment, in the second cleaning program, the downtime in the forward / reverse turning process of the inner tank is longer than 5 seconds.

Further, the washing machine is arranged so that the motor drives the pulsator to rotate in the forward and reverse directions alternately in the washing process. Moreover, the inner tank is in a free state and rotates by inertia due to the water flow.

In addition, the washing machine is arranged so that the motor drives the pulsator to rotate in the forward and reverse directions alternately in the washing process. In addition, the inner tank rotates differentially in the same direction as the pulsator.

Moreover, in the washing machine, the wear resistance of the material of the clothes washed by the second washing program is weaker than the wear resistance of the material of the clothes washed by the first washing program.

In one embodiment, the material of the garment to be washed in the second washing program includes cashmere and / or woolen fabric.

In the present invention, one forward / reverse rotation in the rotation process of the pulsator means one forward rotation and one reverse rotation of the rotation cycle composed of the forward rotation, the stop, and the reverse rotation of the pulsator.

In the present invention, one forward / reverse rotation in the rotation process of the inner tank means one forward rotation and one reverse rotation of the rotation cycle composed of forward rotation, stop, and reverse rotation of the inner tank.

By using the above technical plan, the present invention has the following beneficial effects as compared with the prior art. That is, in the present invention, two different cleaning programs are set, and in the second cleaning program, the time per forward / reverse rotation of the pulsator is longer than that in the first cleaning program, whereby the delicate clothing is subjected to. Reduces wear. As a result, damage to clothes due to frequent forward and reverse rotation of the pulsator is avoided, and the washing machine can normally wash delicate clothes such as cashmere and woolen fabric. In addition, in the second cleaning program, by setting a lower rotation speed and a longer turning time, the water flow is canceled by the sudden reverse rotation, and the cleaning liquid in the inner tank becomes inactive, resulting in the water flow. Avoid situations that interfere with the cleaning effect of clothing.

Hereinafter, specific embodiments of the present invention will be described in more detail in combination with the drawings.

In order to further clarify the purpose, technical plan, and advantages of the examples in the present invention, the technical plan of the examples will be described clearly and concisely by combining the drawings according to the examples of the present invention. The following examples are for explaining the present invention and do not limit the scope of the present invention.

In the description of the present invention, terms such as "top", "bottom", "front", "rear", "left", "right", "vertical", "inside", and "outside" should be explained. The direction or positional relationship indicated by the above is a direction or positional relationship based on the illustration, which is merely for convenience and simplification of the description of the present invention, and the target device or member has a specific direction. It does not explicitly or imply that it must be possessed and configured and operated in a particular direction. Therefore, it should not be understood as limiting the present invention.

In the description of the present invention, the terms "wearing", "connecting", and "connecting" should be broadly interpreted unless otherwise explicitly specified and limited. For example, it may be a fixed connection, a removable connection, or an integrated connection. Further, it may be a mechanical connection or an electrical connection. Further, it may be a direct chain or an indirect chain via an intermediate medium. A person skilled in the art can interpret the specific meanings of the above terms in the present invention according to the specific circumstances.

As the standard of living continues to improve, the quality of life and the quality of the laundry experience are gradually increasing. In the conventional pulsator washing machine, a motor drives the pulsator (or the pulsator and the inner tub) to rotate in the forward and reverse directions frequently to promote water flow and clean clothes. However, with this type of cleaning method, the wear of clothes is large, and the clothes are easily damaged when washing clothes such as cashmere and woolen fabrics.

In a normal washing machine, a drainage motor is generally mounted on the bottom of the outer tub, and the drainage motor simultaneously switches the washing / dehydrating state of the speed reducer and controls the drain valve. In addition, in the conventional plan, in order to solve the problem that the wear of clothes increases due to frequent forward and reverse rotation of the pulsator (or the pulsator and the inner tank), an electric drain valve is generally added to the drain part. By doing so, it is used for control specialized in drainage. As a result, the conventional drainage motor can realize the control specialized for switching the cleaning / dehydrating state of the reducer. Through program control, the washing machine dehydrates the speed reducer of the washing machine by the operation of the drainage motor at the washing stage. As a result, the inner tank and the pulsator can be washed in the same direction and in the same direction, so that the wear of clothes is reduced.

In response to the above technical problems, the present invention sets two different cleaning programs, and in the second cleaning program, the time per forward / reverse rotation of the pulsator is longer than that in the first cleaning program. It provides a washing machine that reduces the wear of delicate clothes. As a result, damage to clothes due to frequent forward and reverse rotation of the pulsator is avoided, and the washing machine can normally wash delicate clothes such as cashmere and woolen fabric. The specific technical plan is as follows.

The washing machine described in this embodiment includes an inner tub for accommodating clothes, a motor for supplying washing power to the washing machine, and a pulsator installed in the inner tub and rotationally driven by the motors alternately in the forward and reverse directions. .. In a general washing machine, the rotation direction of the motor is frequently switched, and the washing liquid in the inner tank and the clothes are frequently rotated to realize washing of clothes. However, in the conventional plan, in order to solve the problem that the wear of clothes increases due to frequent forward and reverse rotation of the pulsator (or the pulsator and the inner tank), an electric drain valve is generally added to the drain part. By doing so, it is used for control specialized in drainage. As a result, the conventional drainage motor can realize the control specialized for switching the cleaning / dehydrating state of the reducer. However, when washing relatively delicate clothes or clothes having poor wear resistance, the clothes are damaged by frequently switching the rotation direction. Therefore, in the present invention, the washing machine dewaters the speed reducer of the washing machine by the operation of the drainage motor at the washing stage through the program control. As a result, the inner tank and the pulsator can be washed in the same direction and in the same direction, so that the wear of clothes is reduced.

Specifically, in the present invention, at least two types of washing programs, a first washing program and a second washing program, are set in the washing system of the washing machine. In the second cleaning program, the time per forward rotation of the pulsator is longer than the time per forward rotation of the pulsator in the first cleaning program. And / or the time per reverse rotation of the pulsator in the second wash program is longer than the time per reverse rotation of the pulsator in the first wash program. In addition, in the second cleaning program, by setting a lower rotation speed and a longer turning time, the water flow is canceled by the sudden reverse rotation, and the cleaning liquid in the inner tank becomes inactive, resulting in the water flow. Avoid situations that interfere with the cleaning effect of clothing. Also, since the rotation time in the second washing program is longer than that in the first washing program, the clothes are washed more firmly.

In the present invention, two different cleaning programs are set, and in the second cleaning program, the time per forward / reverse rotation of the pulsator is longer than that in the first cleaning program, thereby preventing delicate clothing wear. Decrease. As a result, damage to clothes due to frequent forward and reverse rotation of the pulsator is avoided, and the washing machine can normally wash delicate clothes such as cashmere and woolen fabric.

This example further limits the above-mentioned Example 1. The forward rotation speed of the pulsator in the second cleaning program described in this embodiment is smaller than the forward rotation speed of the pulsator in the first cleaning program. And / or, the reverse rotation speed of the pulsator in the second cleaning program is smaller than the reverse rotation speed of the pulsator in the first cleaning program. In the second cleaning program, by setting a lower rotation speed and a longer turning time, the water flow is offset by the sudden reverse rotation, and the cleaning liquid in the inner tank becomes inactive, resulting in clothing by the water flow. Avoid situations that interfere with the cleaning effect of.

This example further limits the above-mentioned Example 1 or Example 2. In the second cleaning program described in this embodiment, the time per forward rotation of the pulsator and / or the time per reverse rotation of the pulsator is set to be longer than 5 seconds, and the rotation time is set to be relatively long. do. This is to provide sufficient washing time for the clothes to avoid the situation where the washing time is shortened due to the pause being too long and the clothes are not washed well. In addition, it is possible to enhance the cleaning effect of clothes even when the rotation speed is reduced.

In this embodiment, preferably, in the second cleaning program, the rotation time is delicate because the rotation time is too long by controlling the time for rotating the pulsator in the forward direction and / or the time for rotating the pulsator in the reverse direction so as not to exceed 2 minutes. Avoid the situation where various clothes are worn.

This example further limits the embodiment of any one of the above-mentioned Examples 1 to 3. In the second cleaning program in this embodiment, the forward rotation speed of the pulsator and / or the reverse rotation speed of the pulsator is set to 15 to 50 rpm. On the other hand, in a general washing machine, forward and reverse are alternately performed, and the rotation speed of the pulsator is usually about 120 to 200 rpm, that is, the rotation speed of the pulsator in the first washing program. When the rotation speed is high, the clothes are thoroughly washed, and the cleanliness and cleaning effect of the clothes can be improved. However, if the rotation speed is too high, the acting force applied to the garment at the time of changing the direction of the forward / reverse alternating rotation becomes large, and a larger abrasion force acts in the process of changing the direction. At this time, the garment having poor wear resistance is damaged in the process of frequently switching the rotation direction. On the other hand, in the present invention, it is premised that the rotation speed in the second cleaning program is set lower than the rotation speed in the general first cleaning program to firmly wash clothes having poor wear resistance. Guaranteed to minimize wear.

This example further limits the embodiment of any one of the above-mentioned Examples 1 to 4. In the second cleaning program described in this embodiment, the stop time in the forward / reverse direction conversion process of the pulsator is longer than the stop time in the forward / reverse direction conversion process of the pulsator in the first cleaning program. In the second cleaning program, the stop time in the forward / reverse turning process of the pulsator is longer than 5 seconds. On the other hand, in a general washing machine washing program, forward and reverse are alternately performed, and the rotation stop time of a general motor is within 0.3 to 3 seconds. However, the rotation speed of the cleaning liquid and the clothes cannot be reduced by a short pause time, and if the motor rotates in the reverse direction while both the cleaning liquid and the clothes are rotating at high speed, serious wear of the clothes is inevitably caused. Will let you.

This example further limits the embodiment of any one of the above-mentioned Examples 1 to 5. The washing machine described in this embodiment is arranged so that the motor drives the inner tub and the pulsator to rotate in opposite directions during the washing process. The time per forward rotation of the inner tank in the second cleaning program is longer than the time per forward rotation of the inner tank in the first cleaning program. And / or, the time per reverse rotation of the inner tank in the second cleaning program is longer than the time per reverse rotation of the inner tank in the first cleaning program.

Further, the time per forward or reverse rotation of the inner tank in the second cleaning program is longer than 5 seconds. And / or the time per forward or reverse rotation of the inner tank in the second cleaning program does not exceed 2 minutes.

The rotation stop time of a general motor is within 0.3 to 3 seconds. However, the rotation speed of the cleaning liquid and the clothes cannot be reduced by a short pause time, and if the motor rotates in the reverse direction while both the cleaning liquid and the clothes are rotating at high speed, serious wear of the clothes is inevitably caused. Will let you.

This example further limits the above-mentioned Example 6. In the second cleaning program described in this embodiment, the speed of forward rotation of the inner tank is smaller than the speed of forward rotation of the inner tank in the first cleaning program. And / or, the speed of reverse rotation of the inner tank in the second cleaning program is smaller than the speed of reverse rotation of the inner tank in the first cleaning program. The speed of forward or reverse rotation of the inner tank in the second cleaning program is 5 to 20 rpm. Further, in the second cleaning program, the rotation speed of the inner tank is lower than the rotation speed of the pulsator. On the other hand, in a general washing machine, forward and reverse are alternately performed, and the rotation speed of the pulsator is usually about 120 to 200 rpm. Further, in the case of double drive, the rotation speed of the inner tank is about 50 to 90 rpm. When the rotation speed of the pulsator and the inner tank is high, the clothes are thoroughly washed, and the cleanliness and cleaning effect of the clothes can be enhanced. However, if the rotation speed is too high, the acting force applied to the garment at the time of changing the direction of the forward / reverse alternating rotation becomes large, and a larger abrasion force acts in the process of changing the direction. At this time, the garment having poor wear resistance is damaged in the process of frequently switching the rotation direction. On the other hand, in the present invention, it is premised that the rotation speed in the second cleaning program is set lower than the rotation speed in the general first cleaning program to firmly wash clothes having poor wear resistance. Guaranteed to minimize wear.

This example further limits the above-mentioned Example 7. In the second cleaning program described in this embodiment, the stop time in the forward / reverse direction change process of the inner tank is longer than the stop time in the forward / reverse direction change process of the inner tank in the first cleaning program. .. In the second cleaning program, the stop time in the forward / reverse turning process of the pulsator is longer than 5 seconds.

This example further limits the embodiment of any one of the above-mentioned Examples 1 to 8. In the washing machine described in this embodiment, the motor is arranged to rotate and drive the pulsator alternately in the forward and reverse directions in the washing process. In addition, the inner tank is in a free state and rotates by inertia due to the water flow.

This example further limits the embodiment of any one of the above-mentioned Examples 1 to 9. In the washing machine described in this embodiment, the motor is arranged to rotate and drive the pulsator alternately in the forward and reverse directions in the washing process. In addition, the inner tank rotates differentially in the same direction as the pulsator.

This example further limits the embodiment of any one of the above-mentioned Examples 1 to 10. In the washing machine described in this embodiment, the wear resistance of the material of the clothes washed by the second washing program is weaker than the wear resistance of the material of the clothes washed by the first washing program. In the present invention, both the cleaning time and the cleaning rotation speed in the second cleaning program are set appropriately. Therefore, regardless of whether the inner tank and the pulsator rotate in opposite directions, differentially rotate in the same direction, or the inner tank is in a free state, delicate clothing or delicate clothing is used in the second cleaning program. Clothes with poor wear resistance can be washed firmly, and the degree of wear can be reduced. Therefore, the user experience is improved.

This example further limits the above-mentioned Example 11. The material of the garment to be washed by the second washing program described in this example includes cashmere and / or woolen fabric.

In the specification provided here, a number of specific details have been described. However, it can be interpreted that the embodiments of the present invention can be practiced even in the absence of these specific details. Further, in some examples, known methods, structures, and techniques are not presented in detail so as not to obscure the understanding of the present specification.

Similarly, in order to simplify the disclosure and aid in understanding one or more aspects of each invention, the description of the exemplary embodiments of the invention described above collectively characterizes each feature of the invention into one. It should be interpreted that it may be incorporated into an example, drawing or description. However, the methods in this disclosure should not be construed to reflect the intent that the invention seeks protection of more features than those specified in each claim. More appropriately, as shown in the claims described below, the aspects of the invention are less than all the features of each of the embodiments disclosed above. That is, the scope of claims according to a specific embodiment is clearly incorporated into the specific embodiment, and each claim itself is an embodiment of the present invention.

Such features and / or at least a portion of a process, or unit, are disclosed herein, in any combination, except to exclude each other. It can be combined with any of the features described above, and with any process or unit of any method or device disclosed herein. Also, unless expressly stated otherwise, each feature disclosed herein (including accompanying claims, abstracts and drawings) provides alternative features for the same, equivalent or similar purposes. It is possible to replace it with.

In addition, as will be understood by those skilled in the art, some of the examples described here include some features included in the other embodiments, but do not include other features. Combining the features of different embodiments is meant to be within the scope of the invention and to form different embodiments. For example, any of the embodiments that claim protection within the scope of the claims described below can be used in any combination.

It should be noted that the above examples illustrate the invention and do not limit the invention. Moreover, a person skilled in the art can design an alternative embodiment without departing from the scope of the attached claims. In the claims, none of the symbols shown in parentheses limits the claims. In addition, the term "includes" does not exclude members or steps not described in the claims. Further, the term "1" or "1" described before the member does not exclude the existence of a plurality of these members. Also, in the claims of a unit enumerating several devices, some of these devices can be specifically embodied by the same hardware. Also, the use of terms such as first, second and third does not represent any order. In other words, these terms should be interpreted as names.

The above is merely a preferred embodiment of the present invention and does not limit the present invention to any form. Although the present invention has been disclosed as described above by preferred embodiments, it is not intended to limit the present invention. To the extent that the technical plan of the present invention is not deviated, slight modifications or supplements that can be carried out by those skilled in the art using the technical contents presented above are regarded as equivalently modified and equivalent examples, and all of them are considered to be the present invention. It does not deviate from the contents of the technical plan of. Also, any simple modifications, equivalent modifications and supplements made to the above embodiments based on the technical nature of the invention are all within the scope of the invention.

Claims (10)

A washing machine including an inner tub for accommodating clothes, a motor for supplying washing power to the washing machine, and a pulsator installed in the inner tub and driven to rotate alternately forward and reverse by the motor.
In addition, it includes at least two cleaning programs, including
In the second wash program, the time per forward rotation of the pulsator is longer than the time per forward rotation of the pulsator in the first wash program, and / or the reverse of the pulsator in the second wash program. A washing machine characterized in that the time per rotation is longer than the time per reverse rotation of the pulsator in the first washing program. The forward rotation speed of the pulsator in the second cleaning program is smaller than the forward rotation speed of the pulsator in the first cleaning program, and / or the reverse rotation speed of the pulsator in the second cleaning program. The washing machine according to claim 1, wherein the washing machine is smaller than the reverse rotation speed of the pulsator in the first washing program. In the second cleaning program, the time per forward rotation of the pulsator and / or the time per reverse rotation of the pulsator is longer than 5 seconds.
Preferably, the time per forward rotation of the pulsator and / or the time per reverse rotation of the pulsator does not exceed 2 minutes.
And / or the washing machine according to claim 1 or 2, wherein in the second cleaning program, the forward rotation speed of the pulsator and / or the reverse rotation speed of the pulsator is 15 to 50 rpm. .. The downtime of the pulsator in the forward / reverse turning process in the second washing program is longer than the downtime in the forward / reverse turning process of the pulsator in the first washing program.
Preferably, the washing machine according to any one of claims 1 to 3, wherein in the second washing program, the stop time in the forward / reverse direction turning process of the pulsator is longer than 5 seconds. The washing machine is arranged so that the motor drives the inner tub and the pulsator to rotate in opposite directions during the washing process.
The time per forward rotation of the inner tank in the second cleaning program is longer than the time per forward rotation of the inner tank in the first cleaning program, and / or the second. The time per reverse rotation of the inner tank in the cleaning program is longer than the time per reverse rotation of the inner tank in the first cleaning program.
Preferably, the time per forward rotation and / or reverse rotation of the inner tank in the second cleaning program is longer than 5 seconds.
More preferably, claims 1 to 4 are characterized in that the time per forward rotation of the inner tank and / or per reverse rotation of the inner tank in the second cleaning program does not exceed 2 minutes. The washing machine according to any one of the above. In the second cleaning program, the forward rotation speed of the inner tank is smaller than the forward rotation speed of the inner tank in the first cleaning program, and / or the inner tank in the second cleaning program. The reverse rotation speed of the inner tank is smaller than the reverse rotation speed of the inner tank in the first cleaning program.
The washing machine according to claim 5, wherein the speed of forward rotation and / or reverse rotation of the inner tub in the second washing program is preferably 5 to 20 rpm. The washing machine according to claim 5 or 6, wherein in the second washing program, the rotation speed of the inner tub is lower than the rotation speed of the pulsator. The stop time in the forward / reverse direction conversion process of the inner tank in the second cleaning program is longer than the stop time in the forward / reverse direction change process of the inner tank in the first cleaning program.
Preferably, the washing machine according to claim 5, wherein in the second washing program, the stop time in the forward / reverse direction turning process of the inner tub is longer than 5 seconds. The washing machine is arranged so that the motor drives the pulsator to rotate in the forward and reverse directions alternately in the washing process.
Moreover, any of claims 1 to 4, wherein the inner tank is in a free state and is rotated by inertia due to a water flow, and / or the inner tank is differentially rotated in the same direction as the pulsator. The washing machine described in item 1. In the washing machine, the wear resistance of the material of the clothes washed by the second washing program is weaker than the wear resistance of the material of the clothes washed by the first washing program.
The washing machine according to any one of claims 1 to 9, wherein the material of the clothes to be washed by the second washing program preferably includes cashmere and / or woolen fabric.