CN102720038B - Drum washing machine and method for cleaning its outer cylinder - Google Patents

Abstract

The present invention relates to a kind of roller washing machine, including urceolus, inner core, drive system, control system, inner tank theca is equipped with at least one shape cleaning block, cleaning block two ends are connected with inner tank theca by Flexible Connector, when inner core operates in setting speed Vmax, Flexible Connector elongation is Lmax, cleaning block and the contact internal walls of urceolus, plays the effect of cleaning outer tube inner wall.The invention still further relates to the urceolus cleaning method of above-mentioned roller washing machine.Use technique scheme, centrifugal force when this method utilizes inner core to rotate, outer tube one cleaning structure of surface configuration, it is achieved the cleaning to outer tube inner wall, keep the clean health of washing machine.

Description

Drum washing machine and method for cleaning its outer cylinder

technical field

The invention relates to a drum washing machine, in particular to a cleaning structure between the inner and outer drums of the drum washing machine, and also relates to a cleaning method for cleaning the inner wall of the outer drum of the drum washing machine using the cleaning structure.

Background technique

The inner and outer drum set of the drum automatic washing machine, its working process is that the clothes are placed in the inner drum, and the drum is filled with water and detergent, and the washing, rinsing and dehydration procedures are automatically carried out. During use, the barrel of the washing machine needs to be in frequent contact with washing water, clothes, lint, etc. At the same time, the washing machine is generally placed in a wet and poorly ventilated bathroom. During long-term use, the inner and outer barrels are inevitably Dirt will collect. For drum washing machines, the current common method for cleaning the inner drum is to use special inner drum cleaning agents or brushes. It is difficult to go deep between the inner and outer barrels to clean the inner barrel. For ordinary users, the feasibility of this method is very low.

Another existing solution, the Chinese patent application number 200820183308.4 discloses a "tub-set washing machine with inter-tub cleaning", in which multiple round silica gel balls are placed between the inner and outer tubs, and the inner tub of the washing machine is used to rotate Drive the flow of water, thereby driving the movement of the silicone ball between the inner and outer barrels of the washing machine and constantly colliding with the two walls of the inner and outer barrels to achieve the purpose of cleaning the inner and outer barrel walls. Rubber ball particles are placed between the inner and outer cylinders, and the density of the rubber ball particles is equal to or slightly lower than that of water. When the user uses the washing machine for regular washing, the rubber ball particles float in the water and collide with the outer wall of the inner cylinder and the inner wall of the outer cylinder during the washing process, which can effectively remove the dirt on them. When the washing machine drains, the rubber ball particles gather in the specially designed structure of the drain valve along with the water flow. The biggest risk of this method is that when the washing machine is dehydrating, due to the possible load eccentricity, the vibration amplitude of the washing machine is relatively large, and the rubber ball particles may break away from the drain valve, enter between the inner and outer cylinders, and collide with the inner cylinder that is selected at high speed, causing noise. Very big. At the same time, because the gap between the inner and outer tubs of the drum washing machine is small, and there are structures such as grooves on the inner wall of the rear of the outer tub, and the structure of the tripod at the rear of the inner tub, the structure between the inner and outer tubs of the drum washing machine is relatively complicated. If silica gel or The problem with the rubber particle method is that when draining, the silica gel or rubber cannot be discharged smoothly with the water, and part of it will remain in the "groove of the outer barrel" or the gap of the tripod. When dehydrating, with the high-speed rotation of the inner barrel, the silica gel or rubber Particles will inevitably collide with the inner barrel, which will generate noise and seriously reduce the user's experience. The prior art cannot effectively solve the potential problem that the rubber ball returns to the space between the inner and outer cylinders during the dehydration process, which produces relatively loud noise and affects the performance of the washing machine.

Another prior patent ZL200620109066.5, the name of the utility model is a cleaning device for the outer wall of the inner tub of the washing machine, which discloses a cleaning device for the outer wall of the inner tub of the washing machine. A cleaning brush and a position switching device connected with the cleaning brush are arranged between the inner and outer barrel walls of the washing machine. The cleaning brush has a length equal to the height of the inner bucket wall of the washing machine and has a strip structure with bristles. There are movable connection points between the end of the cleaning brush and the outer bucket. The switching device is swing type, telescopic type and rotary type. This utility model solves the problem of difficult cleaning of the dirt on the outer wall of the inner barrel of the fully automatic washing machine, but the structure is complicated and the cost is high.

Contents of the invention

The present invention is based on the above defects in the prior art. In order to solve the above problems, it provides a drum washing machine with a cleaning block between the inner and outer cylinders. The present invention also provides a method for cleaning the inner wall of the outer cylinder using the cleaning structure.

The purpose of the present invention is to clean the inner wall of the outer cylinder by installing a cleaning block between the inner and outer cylinders of the washing machine, and start the cleaning program when the user considers it necessary.

In order to realize the object of the present invention, adopt following technical scheme:

A drum washing machine includes an outer tub, an inner tub, a transmission system, and a control system. At least one strip-shaped cleaning block is installed on the outer wall of the inner tub, and the two ends of the cleaning block are connected to the outer wall of the inner tub through elastic connectors.

The cleaning block is made of rubber, foam or plastic wear-resistant material, and the connecting part is made of spring or rubber elastic material.

When the inner cylinder is running at the set speed Vmax, the elastic connecting member elongates by Lmax, and the cleaning block is in contact with the inner wall of the outer cylinder.

The elastic connector is a rubber block, which is clipped and fixed on the inner cylinder and the cleaning block; or, the elastic connector is a spring member, and is fixed on the inner cylinder and the cleaning block by a hook.

The section shape of the cleaning block is arc-shaped, and the shape of the contact part between the cleaning block and the inner cylinder is adapted.

The present invention also relates to a method for cleaning the outer tub of the drum washing machine with the above-mentioned cleaning block structure. The washing machine program includes a washing program, a rinsing program, a dehydration program, and a cleaning program for the outer tub. According to the elastic coefficient of the elastic connector and the distance between the inner and outer tubs, The rotation speed Vmax of the inner cylinder in the cleaning program is set in advance, and when the cleaning program is started, the cleaning block contacts the inner wall of the outer cylinder, and the cleaning block cleans the inner wall of the outer cylinder.

The rotation speed Vmax of the inner drum is greater than the dehydration rotation speed of the front-loading washing machine.

The set time for the cleaning block to contact the inner wall of the outer cylinder to clean the outer cylinder is 3 minutes to 15 minutes.

By adopting the above technical scheme, the drum washing machine uses the principle of centrifugal force and elastic force to install a cleaning structure between the inner and outer cylinders. When the rotation speed of the inner cylinder reaches the Vmax set in the cleaning program, the cleaning block contacts the inner wall of the outer cylinder and rotates with the inner cylinder. , the cleaning block contacts and rubs against the inner wall of the outer cylinder to clean the inner wall of the outer cylinder.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the inner and outer drums of the drum washing machine according to the present invention when it is in the laundry state;

Fig. 2 is a schematic diagram of the structure of the inner and outer drums of the drum washing machine according to the present invention during the cleaning process.

Numbers in the figure: 1. Outer cylinder, 2. Inner cylinder, 3. Cleaning block, 4. Connector.

detailed description

The drum washing machine and cleaning method thereof provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1 and Fig. 2, they respectively show the structural schematic diagrams of the inner and outer cylinders of the front-loading washing machine according to the embodiment of the present invention when it is in the laundry state and in the high-speed dehydration state of the cleaning program.

In this embodiment, the outer tub 1 and the inner tub 2 of the front-loading washing machine are set together to form a front door-opening structure, forming a tub assembly, and the inner tub runs centered on a horizontal axis. The inner cylinder 2 is provided with two strip-shaped cleaning blocks 3 in the diameter direction, and the two ends of the cleaning blocks 3 are fixed to the inner cylinder 2 through elastic connectors 4 . The cleaning block 3 can be made of soft wear-resistant materials such as rubber, foam, plastic, etc., and antibacterial components can also be added; the connecting piece 4 can be made of spring or rubber, etc., and has elasticity.

When the drum washing machine is in normal operation, the cleaning block 3 is close to the outer wall of the inner cylinder 2 under the elastic force of the connecting piece 4, which has no influence on the operation of the washing machine, and ensures the smooth operation of the whole process of the washing machine. The elastic connecting piece is a rubber block, and the card is fastened and fixed on the inner cylinder and the cleaning block through a hook buckle; or, the elastic connecting piece is a spring piece, and the hook is fixed on the inner cylinder and the cleaning block In the hook hole, the installation structure is simple and firm. The cross-sectional shape of the cleaning block is arc-shaped, and the shape of the surface of the cleaning block close to the inner cylinder is adapted to the shape of the contact part of the inner cylinder, which is suitable for the closeness of the cleaning block and the inner cylinder.

When the inner cylinder rotates, the cleaning block 3 is subjected to the outward action of the centrifugal force and the inward elastic force of the elastic connector 4. When the inner cylinder rotates at a constant speed, the two are equal. The formula is as follows:

The elongation "L" of the connecting piece 4 is proportional to the rotational speed "V" of the inner cylinder 2 . The higher the rotation speed of the inner cylinder 2 is, the longer the elongation L of the elastic connecting member 4 is. When the rotation speed of the inner cylinder 2 increases to a certain value Vmax, the elongation "L" of the connecting piece 4 reaches a certain value Lmax, so that the cleaning block 3 contacts the inner wall of the outer cylinder 1 to complete the cleaning of the inner wall of the outer cylinder.

The present invention also relates to a method for cleaning the outer tub of a drum washing machine with the above structure. The washing machine program includes a washing program, a rinsing program, a dehydration program, and a cleaning program for the outer tub. The cleaning program is preset according to the elastic coefficient of the elastic connector and the distance between the inner and outer tubs. The speed Vmax of the middle and inner cylinder, when starting the cleaning program, the inner cylinder runs at the speed Vmax set in the cleaning program. Correspondingly, when the rotation speed of the inner cylinder is at Vmax, the outward elongation of the connecting piece reaches Lmax, and at this time, the cleaning block fixed at one end of the connecting piece is in contact with the inner wall of the outer cylinder. Specifically, considering the rotation speed of the inner tub 2 and the elastic coefficient k of the connecting member 4, a cleaning program for the outer tub can be specially designed in the program of the washing machine, corresponding to the highest rotation speed Vmax of the motor. In the ordinary laundry process, during the washing, rinsing and dehydration processes, the rotation speed of the inner cylinder is less than Vmax, and the cleaning block does not touch the inner wall of the outer cylinder. When the cleaning program of the outer cylinder is started, the motor runs at Vmax, and the connecting piece is extended by Lmax, causing the cleaning block to contact the inner wall of the outer cylinder to complete the cleaning of the inner wall of the outer cylinder. In order to ensure the effect of cleaning the outer cylinder, the general cleaning program time is 3 minutes to 15 minutes, preferably 5 minutes to 10 minutes. After the cleaning block rubs against the inner wall of the outer cylinder, a rinse can be started to completely discharge the dirt out of the machine .

To sum up, in the cleaning method of the drum washing machine and the outer cylinder of the present invention, a cleaning block and an elastic connector are designed on the outer wall of the inner cylinder to form a cleaning structure, and the scheme design using the principle of centrifugal force and elastic force is used. A cleaning structure is set on the outer surface of the inner cylinder to clean the inner wall of the outer cylinder and keep the washing machine clean and hygienic.

Of course, the present invention is not limited to the above-mentioned examples. The technical solutions that are obvious to those skilled in the art can make various modifications and changes to the present invention without departing from the spirit or scope of the present invention. In the claims of the present invention and The present invention covers such modifications and changes within the scope of equivalent replacements thereof.

Claims (8)

1. A drum washing machine, comprising an outer cylinder, an inner cylinder, a transmission system, and a control system, characterized in that at least one strip-shaped cleaning piece is installed on the outer wall of the inner cylinder, and the two ends of the cleaning piece are connected with the outer wall of the inner cylinder by an elastic connector, according to The elastic coefficient of the elastic connector and the distance between the inner and outer cylinders, the inner cylinder speed Vmax in the cleaning program is preset, when the inner cylinder is running at the set speed Vmax, the elongation of the elastic connector is Lmax, and the cleaning block In contact with the inner wall of the outer cylinder, the rotational speed Vmax of the inner cylinder is greater than the dehydration rotational speed of the drum washing machine. 2. The drum washing machine according to claim 1, characterized in that, the cleaning block is made of rubber wear-resistant material, foam wear-resistant material or plastic wear-resistant material. 3. The drum washing machine according to claim 1, characterized in that, the connecting member is made of a spring material or a rubber elastic material. 4 . The drum washing machine according to claim 3 , wherein the elastic connecting member is a rubber block, which is clamped and fixed to the inner cylinder and the cleaning block. 5 . 5. The drum washing machine according to claim 3, characterized in that, the elastic connecting member is a spring member, and a hook is fixed to the inner cylinder and the cleaning block. 6 . The drum washing machine according to claim 3 , wherein the cross-sectional shape of the cleaning block is arc-shaped, and the shape of the contact part between the cleaning block and the inner cylinder is matched. 7 . 7. A method for cleaning the outer cylinder of a drum washing machine according to any one of claims 1 to 6, the washing machine program includes a washing program, a rinsing program, and a dehydration program, and it is characterized in that it also includes a cleaning program for the outer drum, according to the elastic connector The elastic coefficient and the distance between the inner and outer cylinders, the rotation speed Vmax of the inner cylinder in the cleaning program is preset, and when the cleaning program is started, the elongation of the elastic connector is Lmax, and the cleaning block is in contact with the inner wall of the outer cylinder. The rotation speed Vmax of the inner drum is greater than the dehydration rotation speed of the drum washing machine. 8 . The method for cleaning the outer cylinder of a drum washing machine according to claim 7 , wherein in the cleaning procedure, the set time for the cleaning block to contact the inner wall of the outer cylinder to clean the outer cylinder is 3 minutes to 15 minutes.