CN104911860A - Washing machine - Google Patents

Abstract

The present invention discloses a washing machine including an outer barrel, an inner barrel and a wave wheel, and also including a first filtering apparatus for filtering the washing water entering into the inner barrel from the outer barrel, and a second filtering apparatus for filtering the washing water drained from the outer barrel. The first filtering apparatus includes a filtering screen arranged on the bottom of the inner barrel. The washing machine can avoid influence on lint filtering effect caused by washing water level and increase the contact of the washing water and the filter to enhance filtering effect, and can realize automatic cleaning during the water draining process and increase work efficiency. A cycling and filtering method for the washing water of the washing machine, and a cleaning method for the filtering apparatus of the washing machine are also disclosed.

Description

washing machine

technical field

The invention relates to the technical field of pulsator washing machines, in particular to a washing machine with double filtering devices.

Background technique

The pulsator-type washing machine produces a lot of lint due to the high friction to the clothes while quickly washing the clothes. These lint sticks to the clothes and are difficult to clean off, which makes users feel headaches. Most of the existing washing machines use a lint filter to filter the lint. The traditional lint filter has high requirements on the washing water level due to its own structure and installation position. When the washing water level is too low, it is usually difficult to Realize lint filtering, which affects the cleaning effect of clothes, and the filter bag in the traditional lint filter is in direct contact with the clothes. Long-term use will cause the filter bag to wear and affect its service life.

In order to solve the above problems, the Chinese patent document CN201121269 discloses a return water filter device for a fully automatic washing machine, which includes a return water cover plate, a filter screen cover and a filter screen; Ring positioning frame; the top of the filter screen cover is provided with an elastic U-shaped tab, and the lower end has claws. The filter screen frame is inserted into the positioning rib on the filter screen cover through the ring positioning frame at the upper end, and the lower end is positioned by the hook claw, and is connected with the filter screen cover. Connection; there is a groove on the return water cover plate, and a return water outlet is opened on the upper part corresponding to the position of the filter frame. The upper end of the return water outlet is provided with a claw opening, and the lower end is provided with a claw groove, the edge of the filter screen cover is inserted into the groove, the lower claw is inserted into the claw groove, and the elastic U-shaped tongue at the upper end is embedded in the tongue mouth. Due to the use of the filter screen cover, the wear of the filter screen bag is effectively prevented, so that the filter device can be installed at any position on the inner barrel wall of the washing machine, which solves the problem that the mesh bag wear and low water level washing filter effect of the mesh bag return water filter device cannot be taken into account. The problem.

However, in the lint filtering process, the filter can only be filtered by contact with the washing water. The traditional technical solution has a very limited contact range between the washing water and the filter, and a large amount of lint will remain in the washing water that has not contacted the filter. Image filtering Effect.

Contents of the invention

The object of the present invention is to provide a washing machine with a double circulation and filtration system, which can enhance the washing water filtering effect and improve the cleaning efficiency of clothes, and the filtering effect is not affected by the washing water level.

For reaching this purpose, the present invention adopts following technical scheme:

A washing machine, comprising: an outer tub, an inner tub, and a pulsator, including a first filtering device for filtering the washing water entering the inner tub from the outer tub, and a second filtering device for filtering the washing water discharged from the outer tub, the first A filtering device includes an inner bucket bottom filter net arranged at the bottom of the inner bucket.

Preferably, the inner barrel includes an inner barrel body, and the inner barrel body includes an inner barrel water hole provided on the side wall of the inner barrel body, and an inner barrel bottom water hole arranged at the bottom periphery of the inner barrel body.

Preferably, the filter screen at the bottom of the inner bucket has at least one layer, and is connected to the bottom of the inner bucket body through a flange at the bottom of the inner bucket.

Preferably, a mezzanine space is formed between the inner barrel and the outer barrel, and the washing water in the inner barrel flows into the interlayer space through the water hole at the bottom of the inner barrel, and flows back into the inner barrel after being filtered by the filter at the bottom of the inner barrel.

Preferably, the second filtering device includes a filter cylinder and a filter screen, the filter cylinder is provided with a water inlet, a water outlet and a sewage outlet, and the filter screen is installed in the filter cylinder, And the inner cavity of the filter cylinder is divided into two parts, the inner cavity and the outer cavity. The upper end of the inner cavity is connected to the water inlet, and the lower end is connected to the sewage outlet; the outer cavity is connected to the water outlet. The sewage flows into the inner cavity from the water inlet, enters the outer cavity after being filtered by the filter screen and flows out through the water outlet, and the filtered impurities are discharged from the sewage outlet.

Preferably, the lower end of the filter cylinder is provided with an inverted tapered transition section connecting the inner cavity and the sewage outlet.

Preferably, it includes a circulation pump connected to the lower part of the outer tub, the outlet of the circulation pump is connected to the water inlet of the second filter device, and the water outlet of the filter is connected to the upper part of the washing tub through a pipeline to form a closed circulation filtration loop ; The sewage outlet of the second filter device is connected to the sewage pipeline of the washing machine.

Preferably, at least one air inlet for connecting a gas generating device is provided on the outer wall of the filter cylinder.

Preferably, the filter screen is vertically installed in the filter cylinder in a cylindrical shape.

Preferably, the gas generating device is an air pump or an ozone generator.

The beneficial effects of the present invention are: it can avoid the influence of the height of the washing water level on the filtering effect of lint, at the same time, it increases the contact between the washing water and the filter, improves the filtering effect, realizes automatic cleaning during the drainage process, and improves the working efficiency , at the same time, this structure enables the water between the inner and outer tubs to achieve maximum convection, which can effectively improve the washing rate of the washing machine.

Description of drawings

The present invention will be described in further detail below according to the drawings and embodiments.

Fig. 1 is a schematic structural diagram of a washing machine according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the three-dimensional structure of the inner tub of the washing machine according to the embodiment of the present invention.

Fig. 3 is a schematic side view of the inner barrel bottom structure according to the embodiment of the present invention.

Fig. 4 is a schematic bottom view of the inner barrel bottom structure according to the embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the filter described in the embodiment of the present invention.

Fig. 6 is a left view of Fig. 5 .

Fig. 7 is a top view of Fig. 5 .

Fig. 8 is a schematic diagram of the water flow direction in the washing water circulation and filtration process of the washing machine according to the embodiment of the present invention (the direction of the arrow in the figure indicates the water flow direction).

Fig. 9 is a schematic diagram of the direction of water flow when the washing machine according to the embodiment of the present invention drains water (the direction of the arrow in the figure indicates the direction of water flow).

In the picture:

1. Inner barrel body; 2. Outer barrel body; 3. Wave wheel; 4. Drive shaft; 5. Balance ring; Water hole; 10, water hole in the inner barrel; 11, impeller water hole; 12, drain port; 13, circulating water pipe; 14, filter; 15, circulating pump; 16, filter cylinder; 17, filter 18, sewage pipe; 19, water inlet; 20, water outlet; 21, sewage outlet; 22, air inlet; 23, gas generating device; 24, drain valve.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in Figures 1 to 9, in this embodiment, a washing machine according to the present invention includes a casing, an outer tub, an inner tub, and a pulsator 3 are arranged concentrically in the casing, and the pulsator 3 is arranged in the inner tub and is close to the inner tub. At the bottom position, the bottom of the box body is provided with a drive shaft 4 that extends through the bottom of the inner barrel and the outer barrel and extends into the inner barrel. The drive shaft 4 is driven by a drive motor, and a computer version controller for controlling the drive motor is also provided.

Wherein the inner barrel includes an inner barrel body 1, a balance ring 5 arranged on the top of the inner barrel body 1, a water-repellent leaf 6 arranged on the inner wall of the inner barrel body 1, an inner barrel bottom flange 7 is arranged on the bottom of the inner barrel body 1, and the inner barrel bottom On the flange plate hole of flange 7, the filter screen 8 at the bottom of the inner barrel as the first filtering device is installed. 7 is integrally injection molded, and the side of the circumference of the bottom of the inner barrel body 1 is provided with an inner barrel bottom water hole 9, and the side wall of the inner barrel body 1 is provided with an inner barrel body water hole 10, and the pulsator 3 is evenly provided with a pulsator Water hole 11.

Specifically, four flange holes are symmetrically arranged on the inner barrel bottom flange 7 along the geometric center of the inner barrel bottom flange 7, and the inner barrel bottom filter screen 8 is arranged at the positions of the flange holes. Two water holes 9 at the bottom of the inner barrel are arranged on the side of the bottom of the inner barrel, and the inner barrel water holes 9 are arranged symmetrically to each other, and the shape of the inner barrel water holes 9 is rectangular.

The outer barrel includes an outer barrel body 2, and the bottom of the outer barrel body 2 is provided with a drive shaft installation hole and a drain port 12, and the drive shaft installation hole is arranged at the middle position of the outer barrel body 2 bottom. The drain port 12 is connected to the water inlet of the circulating water pipe, and the water outlet of the circulating water pipe is connected back to the inner barrel body 1 of the washing machine from above. The circulating water pipe 13 is provided with a filter 14 as a second filtering device, and the filter 14 is arranged near the bottom of the outer barrel body 2 The location is so that the start and stop of the circulating pump 15 can be controlled in sections to save electric energy. On the other hand, it can save the electromagnetic shut-off valve that originally needs to be installed in the circulating water pipe and reduce the cost.

A circulating pump 15 is provided on the circulating water pipe 13 between the outer barrel body 2 and the filter 14 , and the filter 14 includes a filter cylinder 16 and a filter screen 17 installed in the filter cylinder 16 . The filter screen 17 is tapered and vertically installed in the filter cylinder 16. The filter cylinder 16 is provided with a water inlet 19, a water outlet 20 and a sewage outlet 21. The sewage outlet 21 is connected with The sewage pipe 18 and the water inlet 19 are arranged on the top of the filter cylinder 16, the water outlet 20 is arranged in the middle of the wall of the filter cylinder 16, and the sewage outlet 21 is arranged on the filter cylinder At the bottom of the body 16, the lower end of the filter cylinder 16 is also provided with an inverted tapered transition section, the transition section connects the inner cavity and the sewage outlet 21, the setting of the inverted tapered transition section can facilitate the discharge of impurities, so A gas generating device 23 is connected to the filter 14 through an air inlet 22 .

The filter cylinder 16 is a detachable structure, and its upper cover can be opened to facilitate the removal and loading of the filter screen 17 . The filter screen 17 is installed upright in the filter cylinder 16 in a conical shape, and divides the inner chamber of the filter cylinder 16 into two parts, the inner cavity and the outer cavity, and the upper end of the inner cavity is connected to the water inlet 19 , the lower end is connected to the sewage outlet 21, the external cavity is connected to the water outlet 20, and the pipeline connected between the sewage outlet 21 and the filter 14 is provided with a drain valve 24 for controlling sewage discharge.

The material of the filter screen 17 can be nylon, stainless steel, etc., and the filter screen 17 aperture can be set as a coarse filter of 200 μm-20 μm, which can filter lint etc.; Sterilization effect.

The washing water circulation process of the above-mentioned washing machine is described below. During the washing process, the drain valve 24 is in a closed state, the pulsator rotates forward and reverse according to the rotation ratio set by the program, and the circulation pump 15 is started. Due to the principle of the impeller pump, the water in the inner bucket will flow It flows through the water hole 9 at the bottom of the inner tub to the greatest extent, and enters between the inner and outer tubs. The main water flow process during the washing process is: the washing water flows from the inside of the inner tub through the water hole 11 of the pulsator to between the pulsator 3 and the bottom of the inner tub. Then through the water hole 9 at the bottom of the inner bucket, it flows out from the inside of the inner bucket, enters between the inner bucket and the outer bucket, and the washing water enters between the inner bucket and the outer bucket. The drain outlet is discharged into the circulating water pipe 13 for external circulation.

Wherein the washing water for internal circulation will flow back to the inside of the inner tub through the filter screen 8 at the bottom of the inner tub provided at the bottom of the inner tub and the inner tub body water hole 10 on the side wall of the inner tub. Most of the crumbs are blocked between the inner and outer barrels, and the washing water flowing back to the inner barrel from the filter screen 8 at the bottom of the inner barrel is filtered by the filter screen 8 at the bottom of the inner barrel to filter the lint, making it stay between the inner barrel and the outer barrel, and then The washing water enters the circulating water pipe 13 for external circulation. Under the action of the circulating pump 15, the washing water flows along the circulating water pipe 13. When passing through the filter 14, the lint in the washing water is filtered by the filter 14, and the washing water passes through the filter. The container 14 flows back to the inside of the inner bucket by the water outlet of the circulating water pipe.

The cleaning process of the filter device of the washing machine is as follows: when the washing is finished and the water is drained, the pulsator 3 stops rotating, the circulation pump 15 is turned off, the drain valve 24 and the gas generating device 23 are turned on, and the washing water is freely discharged downward under the action of gravity, so the inner tub is preferentially discharged. The bottom filter screen 8 is discharged, because the direction of water flow during filtration is opposite to that of water flow during drainage, the impurities adhering to the filter screen 8 at the bottom of the inner bucket during filtration are easily washed away when drained, and the impurities enter the circulating water pipe 13 together with the washing water , when the washing water flows through the filter 14, it is connected with the gas blown out by the gas generating device 23, generating air bubbles in the washing water, so that the fluid in the area where the filter screen 17 in the filter 14 is located is disturbed so that on the filter screen 17 The impurities are separated from the filter screen 17, and the separated impurities are discharged from the sewage outlet 21 together with the washing water.

In other embodiments, the quantity and setting positions of the air inlets 22 described in the above-mentioned embodiments can also be adjusted. By increasing the quantity of the air inlets 22 and adjusting the setting positions, the washing water in the filter screen 17 can be fully agitated. The role of ensuring that impurities can be smoothly shed during the sewage discharge process. In order to achieve the effect of sterilization and disinfection, the gas generating device can also use an ozone generator.

It should be stated that the above-mentioned specific implementation methods are only preferred embodiments of the present invention and the applied technical principles. Within the technical scope disclosed in the present invention, any changes or substitutions that are easily conceivable by those skilled in the art, All should be covered within the protection scope of the present invention.

Claims (10)

1. a washing machine, comprise: outer barrel, interior bucket, impeller, it is characterized in that, comprise the first filter that the washings being entered interior bucket by outer barrel are filtered, with the second filter that the washings of discharging outer barrel filter, described first filter comprises screen pack (8) at the bottom of the interior bucket at the bottom of the bucket being arranged on interior bucket.

2. washing machine according to claim 1, it is characterized in that, described interior bucket comprises inner drum (1), the inner drum water hole (10) described inner drum (1) comprising the sidewall being located at described inner drum (1), be arranged at described inner drum (1) bucket at the bottom of perimembranous interior bucket at the bottom of water hole (9).

3. washing machine according to claim 2, is characterized in that, at the bottom of described interior bucket, screen pack (8) has at least one deck, is connected with at the bottom of the bucket of described inner drum (1) by ring flange at the bottom of interior bucket.

4. washing machine according to claim 3, it is characterized in that, describedly form mezzanine space between the inner barrel and outer barrel, washings in described inner drum (1) flow in described mezzanine space by water hole (9) at the bottom of interior bucket, flow back to inner drum (1) inner after screen pack (8) at the bottom of interior bucket filters.

5. the washing machine according to any one of claim 1-4, it is characterized in that, described second filter, comprise filter cylinder (16) and filter screen (17), described filter cylinder (16) offers water inlet (19), delivery port (20) and sewage draining exit (21), described filter screen (17) is installed in described filter cylinder (16), and the inner chamber of filter cylinder (16) is divided into inner volume and outside cavity volume two parts, inner volume upper end is connected with described water inlet (19), and lower end is connected with described sewage draining exit (21); Outside cavity volume connects with described delivery port (20), and sewage flows into inner volume from water inlet (19), and after filter screen (17) filters, enter outside cavity volume and flow out through delivery port (20), the impurity of filtration is discharged by described sewage draining exit (21).

6. washing machine according to claim 5, is characterized in that, described filter cylinder (16) lower end is provided with back taper changeover portion and connects described inner volume and described sewage draining exit (21).

7. washing machine according to claim 5, it is characterized in that, comprise the circulating pump (15) be connected with outer barrel bottom, the outlet of described circulating pump (15) connects the water inlet (19) of described second filter, the delivery port (20) of described filter (14) connects inner drum (1) top by the road, forms closed circulating filtration loop; The sewage draining exit (21) of described second filter connects the blowoff line of washing machine.

8. washing machine according to claim 5, is characterized in that, described filter cylinder (16) outer wall is provided with at least one for connecting the air inlet (22) of gas generating unit (23).

9. washing machine according to claim 5, is characterized in that, described filter screen (17) cylindrical setting is installed in described filter cylinder (16).

10. washing machine according to claim 8, is characterized in that, described gas generating unit (23) is inflating pump or ozone generator.