WO2017206829A1

WO2017206829A1 - Auxiliary washing method for roller washing machine and roller washing machine

Info

Publication number: WO2017206829A1
Application number: PCT/CN2017/086303
Authority: WO
Inventors: 许升; 吕艳芬; 宋华诚
Original assignee: 青岛海尔滚筒洗衣机有限公司
Priority date: 2016-06-01
Filing date: 2017-05-27
Publication date: 2017-12-07
Also published as: CN107447430B; CN107447430A

Abstract

An auxiliary washing method for a roller washing machine and a roller washing machine. The roller washing machine is provided therein with a nozzle assembly (5), and the nozzle assembly (5) is connected with a spray pipe capable of separately controlling water inlet. The auxiliary washing method for a roller washing machine is: in a process of washing clothes, the roller washing machine controls in the water inlet of the spray pipe in the washing process and/or before the start of a rinsing process and/or in a drying process; the nozzle assembly (5) sprays water to wash walls of an inner roller (3) and an outer roller (2). The auxiliary washing method for a roller washing machine according to the present invention can be used to achieve self-cleaning of parts which existing washing machines are unable to clean, and to avoid "blind spots" from occurring, thereby ensuring the self-cleaning results on the roller walls, improving the results of clothes washing, and enhancing the user experience.

Description

Auxiliary cleaning method for drum washing machine and drum washing machine

Technical field

The present invention relates to the field of washing machine technology, and in particular to a drum washing machine auxiliary cleaning method and a drum washing machine.

Background technique

The inner and outer cylinder set of the household electric automatic washing machine is in the process of placing the laundry in the inner cylinder, adding water to the cylinder to add detergent, and automatically performing washing, rinsing and dehydrating procedures. During use, the washing machine bucket needs to be in constant contact with washing water, clothes, thread, etc., while the washing machine is generally placed in a damp, poorly ventilated toilet. Inevitably between the inner and outer barrels during long-term use. Gather dirt. For the current washing machine, the gap between the inner and outer cylinders is small, and it is difficult for the user to clean the inner cylinder. Therefore, after a long period of use, the dirt on the inner cylinder generates mold, bacteria, etc., which not only affects the washing effect of the clothes, but also causes secondary pollution and affects the health of the user.

In order to solve the cleaning problem of the inner and outer cylinder walls, there is a washing machine provided with cleaning particles between the inner and outer cylinders, and the inner and outer cylinder walls are cleaned by the friction of the cleaning particles, but this is good for cleaning the side walls of the inner and outer cylinders. The effect, but the cleaning of the bottom of the inner cylinder is not effective. Especially for the drum washing machine, since the gap between the bottom of the inner cylinder and the bottom of the outer cylinder is relatively small, the cleaning particles cannot enter, and the effect of cleaning the bottom of the cylinder is not obtained.

Therefore, how to solve the problem of cleaning the wall of the drum washing machine is essential for maintaining the cleaning between the inner and outer cylinders.

In view of this, the present invention has been specifically proposed.

Summary of the invention

In order to solve the above problems, a first object of the present invention is to provide an auxiliary washing method for a drum washing machine, and in particular, the following technical solutions are adopted:

An auxiliary washing method for a drum washing machine, wherein the drum washing machine is provided with a nozzle assembly, and the nozzle assembly is connected to a water spray pipe capable of separately controlling the water inlet, the drum washing machine in the washing process, in the washing process and/or the rinsing program Before starting and/or in the dehydration process, the water injection pipe is controlled to enter the water, and the water spray component sprays water to wash the inner cylinder and the outer cylinder wall.

Further, the drum washing machine closes the drain valve, controls the water inlet of the water spray pipe, and sprays the water spray into the inner cylinder before the water supply process of the rinsing program is before the end of the dehydration process of the previous washing process. , the wall of the outer cylinder;

The drum washing machine starts the rinsing process and starts to rinse the water;

The setting of the time t satisfies: the water inlet amount L of the water spray component does not exceed the safe water level line during the time t, and the safe water level line is The water level below the lowest part of the inner cylinder wall is tangent.

Further, the safety water level line is Hmm below the water level when tangential to the lowermost portion of the inner cylinder wall, and H is 1-2 mm.

Further, the drum washing machine closes the drain valve and controls the spray before the water in the rinsing program, during the time t before the end of the dehydration process of the washing program and/or before the end of the dehydration process of the last rinsing process. The water pipeline enters the water, and the water spray component sprays water to wash the inner cylinder and the outer cylinder wall;

The drum washing machine starts the rinsing process and starts to rinse the water.

Further, the drum washing machine controls the water injection pipe to enter the water before the end of the dehydration process in the second half of the dehydration process, and the water spray component sprays water to wash the inner cylinder and the outer cylinder wall.

Further, the drum washing machine starts a washing process to control the water inlet of the water spray pipe, and the water spray component sprays water to wash the inner wall of the inner cylinder and the outer cylinder, and when the water injection time of the water spray pipe is t1, the washing starts. water;

Alternatively, the drum washing machine starts the washing process, and the water inlet of the water spray assembly and the water inlet of the washing program are simultaneously performed;

Wherein, the t1 is taken as: 10s to 30s.

A second object of the present invention is to provide a drum washing machine, and in particular, the following technical solution is adopted:

A drum washing machine adopting the auxiliary washing method of the drum washing machine according to any one of the above, comprising an outer cylinder and an inner cylinder coaxially arranged in the outer cylinder, wherein the outer cylinder is surrounded by the outer cylinder bottom and the outer cylinder wall into a cylindrical structure, An outer cylinder opening is formed at an end of the outer cylinder opposite to the bottom of the outer cylinder; a nozzle assembly is mounted on the inner wall of the outer cylinder bottom and/or the inner wall of the outer cylinder opening, and the nozzle assembly is connected to separately control the water injection pipeline of the water inlet.

Further, the inner cylinder bottom of the inner cylinder is mounted with an inner cylinder shaft, and the nozzle assembly is installed at an upper portion of the inner wall of the outer cylinder bottom. The installation position and the installation angle of the nozzle assembly are satisfied: the spray water flow of the nozzle assembly is covered The area of the boss around the cylinder shaft.

Further, a water inlet pipe for the water entering the washing program is further included, and the water inlet pipe communicates with the water spray pipe.

Further, the showerhead assembly includes a nozzle and a connecting pipe connected thereto, and the connecting pipe communicates with the water spray pipe; the injection port of the nozzle is a fan-shaped opening.

According to the structural characteristics of the drum washing machine of the present invention, the nozzle assembly is mounted on the inner wall of the outer cylinder bottom and/or the inner wall of the outer cylinder opening, and the nozzle assembly installed on the inner wall of the outer cylinder bottom can spray the water to realize the cleaning of the inner and outer cylinder bottoms, and the outer cylinder The nozzle assembly mounted on the inner wall of the opening can clean the wall of the cylinder at the opening of the outer cylinder. Therefore, the drum washing machine of the invention can realize the self-cleaning of the uncleanable parts of the existing washing machine, avoid the generation of the cleaning "dead angle", and ensure the wall of the cylinder. The self-cleaning effect improves the washing effect of the clothes and improves the user experience.

In addition, the drum washing machine of the present invention can provide cleaning particles between the inner cylinder and the outer cylinder to realize the inner cylinder side wall and the outer cylinder. The self-cleaning effect of the side wall of the cylinder to achieve self-cleaning of the inner cylinder wall and the outer cylinder wall.

The auxiliary washing method for the drum washing machine of the present invention controls the water inlet of the water spray pipe in the washing process and/or before the start of the rinsing process and/or the dehydration process according to the working process of the washing machine, and the water spray component sprays the water to wash the inner cylinder The wall of the outer cylinder is used to achieve a good self-cleaning effect of the cylinder wall.

DRAWINGS

1 is a schematic structural view of a drum washing machine according to an embodiment of the present invention;

2 is an assembled view of an inner cylinder and an outer cylinder of a drum washing machine according to an embodiment of the present invention;

Figure 3 is a cross-sectional view of the embodiment of the present invention;

Figure 4 is another cross-sectional view of Figure 2 of the embodiment of the present invention;

Figure 5 is a schematic view showing the connection of the water inlet pipe and the water spray pipe of the drum washing machine in the embodiment of the present invention;

6 is a schematic perspective structural view of an outer cylinder of a drum washing machine according to an embodiment of the present invention;

Figure 7 is a front view of the outer cylinder of the drum washing machine in accordance with an embodiment of the present invention;

Figure 8 is a bottom view of the outer cylinder of the drum washing machine in accordance with an embodiment of the present invention;

Figure 9 is a perspective view showing the inner structure of the inner cylinder of the drum washing machine in accordance with an embodiment of the present invention;

Figure 10 is a perspective view showing the structure of a head assembly of a drum washing machine in accordance with an embodiment of the present invention.

DESCRIPTION OF REFERENCE NUMERALS: 1-case 2-outer cylinder 3-inner cylinder 4-inlet pipe 5-spray assembly 6-triple 7-motor drive 8-cleaning granules 9-heating pipe 10-drain pipe Road 11-Main collection chamber 12-Baffle 13-Drainage pump 14-Drainage hose 15-Heating tube bracket 16-door body 17-Computer board controller 18-Inner tube shaft 19-Inlet valve 20-First inlet pipe 21-three-way valve 22-spray line 23-second inlet pipe 24-inlet 201-heating tube groove 202-outer tube wall 203-outer tube bottom 501-nozzle 502-connecting tube.

detailed description

The auxiliary cleaning method of the drum washing machine and the drum washing machine of the present invention will be described in detail below with reference to the accompanying drawings:

Embodiment 1

The embodiment provides an auxiliary washing method for a drum washing machine. The drum washing machine is provided with a nozzle assembly, and the drum washing machine controls the spraying during the washing process, before the washing process and/or before the rinsing process starts, and/or during the dehydrating process. The water pipeline enters the water, and the water spray component sprays water to wash the inner cylinder and the outer cylinder wall.

The auxiliary washing method for the drum washing machine of the present invention controls the water inlet of the water spray pipe in the washing process and/or before the start of the rinsing process and/or the dehydration process according to the working process of the washing machine, and the water spray component sprays the water to wash the inner cylinder , the wall of the outer cylinder, In order to achieve a good self-cleaning effect of the wall.

Spraying water spray control mode 1: The drum washing machine closes the drain valve, controls the water injection pipe to enter the water, and sprays the water spray component before the water supply process of the previous washing process is completed. Flushing the inner wall of the inner cylinder and the outer cylinder;

The setting of the time t satisfies: the water intake amount L of the water spray component does not exceed the safe water level line during the time t, and the safe water level line is below the water level when the innermost tube wall is tangent to the lowermost portion.

In this manner, before the start of the rinsing process, the drain valve is closed during the time t before the end of the dehydration process of the previous washing program, and the water in the spray line is controlled to start flushing the wall. The setting of the time t should be as small as possible on the one hand, so as to ensure that the dehydration of the previous washing program is completely discharged, and on the other hand, it should be as large as possible to ensure the water spray effect of the nozzle assembly.

It can be known from the actual working process that during the dehydration process, the amount of dehydration in the second half is generally small or not. Therefore, the time t of the embodiment can satisfy the water intake amount L of the water spray component not exceeding the safe water level line. . The safety water level line is not exceeded to prevent the cleaning particles between the inner and outer cylinders from being carried by the inner cylinder. Since the inner cylinder rotates at a high speed during the dehydration process, noise may be generated if the cleaning particles are carried by the inner cylinder.

The advantage of the first method is that the water spray cleaning nozzle wall is controlled before the start of the rinsing process, not only realizes the self-cleaning effect of the tube wall, but also the sprayed water can be used for the rinsing process, which saves the water in the rinsing program and saves the water. The time of the rinsing process shortens the time of the entire laundry process.

Specifically, the drum washing machine closes the drain valve and controls the spray before the water in the rinsing program, during the time t before the end of the dehydration process of the washing program and/or before the end of the dehydration process of the last rinsing process. The water pipeline enters the water, and the water spray component sprays water to wash the inner cylinder and the outer cylinder wall;

Spraying water spray control mode 2: The drum washing machine controls the water injection pipe to enter the water before the end of the dehydration process in the second half of the dehydration process, and the water spray component sprays the water to wash the inner cylinder and the outer cylinder wall.

The dehydration process of the second mode is the final dehydration process of the washing machine. After the dehydration process is completed, the washing process of the washing machine ends, or the washing machine enters the drying process.

Specifically, the drum washing machine controls the water inflow into the water spray pipe within 10 s to 20 s before the end of the dehydration process, and the water spray component sprays water to wash the inner wall of the inner cylinder and the outer cylinder.

The advantage of the second method is that when the water spray component is in the water during dehydration, the flushing force of the water flow can be enhanced, and the water flow is sprayed onto the inner cylinder or the inner cylinder shaft, and under the action of the centrifugal force, the inner and outer cylinder walls are splashed outward.

After the dehydration process is finished, the entire washing process is finished. At this time, the water spray component sprays the wall to clean the wall, and there is no secondary pollution of the subsequent washing process to ensure the self-cleaning effect.

In addition, for the drum washing machine with clean particles between the inner and outer cylinders, the drain valve is opened in the dehydration process, and no water remains in the groove of the heating tube, which can prevent the cleaning particles from floating up with the water flow and being dehydrated by the inner cylinder. .

Spraying water spray control mode 3: The drum washing machine starts the washing process, controls the water injection pipe to enter the water, and the water spray component sprays the water to wash the inner cylinder and the outer cylinder wall. When the water injection pipe enters the water for t1, Start washing into the water;

Wherein, the t1 is taken as: 10s to 30s.

The advantage of the third method is that it does not increase the amount of washing water, and the cleaning particles do not produce dehydration abnormal sound at all.

The above three water spray assembly water spray control modes of the drum washing machine auxiliary cleaning method of the present embodiment may be used alone or in combination.

Embodiment 2

As shown in FIG. 1 , FIG. 6 , FIG. 7 and FIG. 8 , a drum washing machine using the auxiliary washing method of the drum washing machine according to the first embodiment includes an outer cylinder 2 and coaxially disposed in the outer cylinder 2 . a rotatable inner cylinder 3, the outer cylinder 2 is surrounded by an outer cylinder bottom 203 and an outer cylinder wall 202, and an outer cylinder opening is formed at an end of the outer cylinder 2 opposite to the outer cylinder bottom 203; the outer cylinder bottom 203 A showerhead assembly 5 is mounted on the inner wall of the inner wall and/or the outer cylinder opening, and the showerhead assembly 5 is connected to a water spray conduit that can independently enter the water.

According to the structural characteristics of the drum washing machine of the present embodiment, the nozzle assembly 5 is mounted on the inner wall of the outer cylinder bottom 203 and/or the inner wall of the outer cylinder opening, and the nozzle assembly 5 mounted on the inner wall of the outer cylinder bottom 203 can be sprayed with water to realize internal and external The cleaning of the bottom of the cylinder, the nozzle assembly 5 mounted on the inner wall of the opening of the outer cylinder can realize the cleaning of the cylinder wall at the opening of the outer cylinder. Therefore, the drum washing machine of the invention can realize self-cleaning of the existing cleaning parts of the washing machine, and avoid cleaning the dead corner. The production ensures the self-cleaning effect of the tube wall, improves the washing effect of the clothes, and improves the user experience.

The head assembly of the present embodiment may be mounted on the inner wall of the outer cylinder bottom 203, or may be mounted on the inner wall of the outer cylinder opening, or may be simultaneously mounted on the inner wall of the outer cylinder bottom 203 and the inner wall of the outer cylinder opening.

As an embodiment of the present embodiment, as shown in FIG. 2, FIG. 3, FIG. 6, FIG. 7, and FIG. 8, when the head assembly 5 is mounted on the inner wall of the outer cylinder bottom 203, it is mainly for the inner and outer cylinder bottoms. Cleaning is mainly for cleaning the outer wall of the inner cylinder bottom. As shown in FIG. 9, the inner cylinder shaft 18 is mounted at the center of the inner cylinder bottom of the inner cylinder 3, and the nozzle assembly 5 is mounted on the upper portion of the inner wall of the outer cylinder bottom 203. The installation position and the installation angle of the nozzle assembly 5 satisfy: The jet of water from the showerhead assembly 5 covers the land area around the inner cylinder shaft. There is a boss area at the center of the inner cylinder bottom to realize the inner cylinder shaft 18 The installation and reinforcement of the overall strength of the inner cylinder bottom, but the boss area is also very easy to hide dirt. In this embodiment, the nozzle assembly 5 is mounted on the outer cylinder bottom 203, and the projection area can be aligned Scoured with good cleaning results.

In addition, a tripod 6 is mounted on the inner cylinder bottom of the inner cylinder 3 of the present embodiment, and the tripod 6 increases the overall strength of the inner tub bottom 3, and the inner cylinder shaft 18 is mounted. Therefore, the center of the tripod 6 has Boss area. Therefore, the head assembly 5 of the embodiment can also achieve the flushing of the tripod 6 to achieve a self-cleaning effect.

In order to realize the flushing and cleaning of the inner cylinder bottom of the inner cylinder 3 by the nozzle assembly 5, in particular, the cleaning of the tripod 6, the nozzle assembly 5 of the present embodiment is mounted on the upper portion of the inner wall of the outer cylinder bottom 203 to realize the ejection of the nozzle assembly 5. The water flow is washed from top to bottom, and the self-cleaning effect is better.

As an embodiment of the embodiment, when the head assembly 5 is mounted on the inner wall of the outer cylinder opening, the cleaning is mainly for the front portion of the inner cylinder 3 and the outer cylinder 2, since the inner cylinder 3 is installed in the outer cylinder 2, the inner cylinder The front opening of the 3 extends out of the front opening of the outer cylinder 2, so that there is less clearance at the intersection of the front portion of the inner cylinder 3 and the outer cylinder 2, and it is easy to form a "dead zone" which is difficult to clean. The nozzle assembly of this embodiment 5 installed there to solve the cleaning of the front area of the inner cylinder 3 and the outer cylinder 2.

As an embodiment of the present embodiment, as shown in FIG. 2 and FIG. 4, the head assembly 5 is simultaneously mounted on the inner wall of the outer cylinder bottom 203 and the inner wall of the outer cylinder opening, so that the inner cylinder 3 and the outer cylinder 2 can be realized. The two "clean dead zones" are flushed at the same time to ensure self-cleaning effect.

In order to realize the flushing and cleaning of the front portion of the inner cylinder 3 by the nozzle assembly 5, the nozzle assembly 5 of the embodiment is installed in the upper portion of the inner wall of the opening of the outer cylinder, so that the water flow sprayed from the nozzle assembly 5 is flushed from top to bottom, and the self-cleaning effect is further improved. it is good.

Further, the shower head assembly 5 of the present embodiment is connected to a water spray pipe that can separately control the water inlet, and the water spray pipeline can be separately connected to the water tap to realize independent water inlet, or can be connected to the water inlet pipeline 4 used for the water in the washing program. through. The water spray pipe can control the water inlet separately, and it is convenient to select the appropriate water inlet timing and the flushing of the inner water tank according to the washing process of the washing machine to achieve the best self-cleaning effect.

As shown in FIG. 5, the water spray pipe 22 of the shower head assembly 5 of the present embodiment directly communicates with the water inlet pipe 4 of the washing machine.

Specifically, the water inlet pipe of the washing machine is divided into a first inlet pipe 20 and a second inlet pipe 23, the first inlet pipe 20 is connected to the inlet valve 19, and the second inlet pipe 23 is connected to the inlet 24 of the front portion of the outer cylinder 2, One inlet pipe 20 and the second inlet pipe 23 communicate through the three-way valve 21, and the other outlet of the three-way valve 21 is connected to the water injection pipe 22. In this embodiment, the water inlet of the water spray pipe 22 can be realized by adding the three-way valve 21 to the existing water inlet pipe, and the water inlet or the water spray component of the washing machine can be realized by controlling the opening and closing of the corresponding water outlet of the three-way valve 21. Inlet water or washing machine and water spray assembly are simultaneously filled with water. Therefore, the access mode of the water spray pipe 22 of the water spray assembly 5 of the present embodiment is modified on the water inlet mode of the existing washing machine, which is simple and convenient, and is easy to implement.

Further, as shown in FIG. 10, the showerhead assembly 5 of the present embodiment includes a nozzle 501 and a connecting pipe 502 connected thereto, and the connecting pipe 502 communicates with the water spray pipe 22; the jet port of the nozzle 501 is fan-shaped. Opening. The injection port of the nozzle 501 of the embodiment is a fan-shaped opening, so that the jetted water flows to form a fan-shaped covering surface, which increases the flushing area; and the fan-shaped opening is flat, which reduces the cross-sectional area of the jetting nozzle 501. The water spray water pressure is increased; therefore, the nozzle 501 of the present embodiment has a better spray area and a larger spray water pressure, and the flushing effect is good.

Further, as shown in FIG. 1 , the drum washing machine of the present embodiment further includes a box body 1 . The front portion of the box body 1 is provided with a door body 16 that is opened/closed, and the door body 16 is covered on the opening of the outer tube 2; the box body 1 The front panel is further provided with a computer board controller 17 for controlling the washing process of the washing machine; the tank body 1 is internally provided with a water inlet pipe 4 for injecting water into the outer cylinder 2; the casing 1 is further provided with a motor driving device 7 therein. The motor driving device 7 is disposed at the bottom of the outer cylinder 2, and is connected to the inner cylinder 3 through the transmission shaft, and drives the inner cylinder 3 to rotate to realize washing/dehydration.

In the embodiment, the nozzle assembly 5 is installed on the outer cylinder for the existing drum washing machine, thereby realizing the self-cleaning effect of the cylinder wall, improving the cleanliness of the laundry, and the user experience is better.

Embodiment 3

The difference between this embodiment and the second embodiment is that the drum washing machine adopting the auxiliary washing method of the drum washing machine according to the first embodiment is provided with cleaning particles 8 between the inner cylinder 3 and the outer cylinder 2 to realize the inner cylinder. 3 The self-cleaning effect of the side walls and the side walls of the outer cylinder 2, in order to achieve self-cleaning of the inner cylinder wall and the outer cylinder wall.

When the drum washing machine of the embodiment is in the water, the cleaning particles 8 enter the inner and outer cylinders with the washing water; when the inner cylinder 3 is rotated and washed, the cleaning particles 8 continuously rub the inner and outer cylinder walls with the washing water flow, which can effectively prevent the deposition of dirt. Keep the inner and outer cylinders clean;

Further, the lower portion of the outer tube 2 of the drum washing machine of the embodiment has a heating tube recess 201, and the heating tube 9 is provided with a heating tube 9, and the other end of the heating tube 9 is supported by the heating tube holder 15 to maintain a horizontal setting. . The lower portion of the heating pipe recess 201 is provided with a main collecting chamber 11 in communication therewith, and a baffle 12 for blocking the cleaning particles 8 is disposed in the main collecting chamber 11. The main collection chamber 11 is connected to the drain pump 13 via a drain hose 14, and the drain pump 13 is connected to the drain line 10.

When the drum washing machine of the present embodiment is drained, most of the cleaning particles 8 enter the main collection chamber 11 with the water flow, and a small amount of the cleaning particles 8 fall back into the heating tube groove 201, which can prevent noise from being generated at the time of high-speed dehydration.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any technology that is familiar with the present patent. Those skilled in the art can make some modifications or modifications to equivalent embodiments by using the technical content of the above-mentioned hints without departing from the technical scope of the present invention, but the technology according to the present invention does not deviate from the technical solution of the present invention. Substantially above Any simple modifications, equivalent changes, and modifications made to the embodiments are still within the scope of the present invention.

Claims

An auxiliary washing method for a drum washing machine, characterized in that the drum washing machine is provided with a nozzle assembly, and the nozzle assembly is connected to a water spray pipe capable of separately controlling the water inlet, the drum washing machine is in the washing process, in the washing process / / Before the start of the rinsing process and / or in the dehydration process, the water spray pipe is controlled to enter the water, and the water spray component sprays water to wash the inner cylinder and the outer cylinder wall.
The auxiliary washing method for a drum washing machine according to claim 1, wherein the drum washing machine closes the drain valve within a time t before the end of the dehydration process of the last washing program before the rinsing program enters the water. Controlling the water injection pipe to enter the water, and the water spray component spraying water to wash the inner cylinder and the outer cylinder wall;

The drum washing machine starts the rinsing process and starts to rinse the water;

The setting of the time t satisfies: the water intake amount L of the water spray component does not exceed the safe water level line during the time t, and the safe water level line is below the water level when the innermost tube wall is tangent to the lowermost portion.
The auxiliary washing method for a drum washing machine according to claim 2, wherein the safety water level line is Hmm below the water level when tangential to the lowermost portion of the inner cylinder wall, and H is 1-2 mm.
The auxiliary washing method for a drum washing machine according to claim 2, wherein the drum washing machine is in a time t before the end of the dehydration process of the washing program and/or the last rinsing process before the rinsing program enters the water. Within the time t before the end of the dehydration process, the drain valve is closed, the water injection pipe is controlled to enter the water, and the water spray assembly sprays water to wash the inner cylinder and the outer cylinder wall;

The drum washing machine starts the rinsing process and starts to rinse the water.
The auxiliary washing method for a drum washing machine according to claim 1, wherein the drum washing machine controls the water inlet of the water spray pipe before the end of the dehydration process in the second half of the dehydration process, and the water spray assembly The water spray washes the wall of the inner cylinder and the outer cylinder.
The auxiliary washing method for a drum washing machine according to claim 1, wherein the drum washing machine starts a washing process to control water inflow into the water spray pipe, and the water spray component sprays water to wash the inner wall of the inner cylinder and the outer cylinder When the water injection pipe enters the water for t1, the washing water is started to be washed;

Alternatively, the drum washing machine starts the washing process, and the water inlet of the water spray assembly and the water inlet of the washing program are simultaneously performed;

Wherein, the t1 is taken as: 10s to 30s.
A drum washing machine using the auxiliary washing method of a drum washing machine according to any one of claims 1 to 6, comprising an outer cylinder and an inner cylinder coaxially disposed in the outer cylinder, the outer cylinder being surrounded by the outer cylinder bottom and the outer cylinder wall a cylindrical structure, an end of the outer cylinder opposite to the bottom of the outer cylinder opens an outer cylinder opening; wherein the inner wall of the outer cylinder bottom and/or the inner wall of the outer cylinder opening are provided with a nozzle assembly, and the nozzle assembly is separately connectable A water spray line that controls the incoming water.
A drum washing machine according to claim 7, wherein a center of the inner cylinder bottom of the inner cylinder The inner cylinder shaft is mounted, and the nozzle assembly is installed in an upper portion of the inner wall of the outer cylinder bottom. The installation position and the installation angle of the nozzle assembly are satisfied: the jet water flow of the nozzle assembly covers the boss area around the inner cylinder shaft.
A drum washing machine according to claim 8, further comprising a water inlet pipe for the water entering the washing program, the water inlet pipe being connected to the water spray pipe.
A drum washing machine according to any one of claims 7-9, wherein said head assembly comprises a nozzle and a connecting pipe connected thereto, and said connecting pipe communicates with said water spraying pipe; said nozzle The jet opening is a fan-shaped opening.