CN110878458B

CN110878458B - Washing machine

Info

Publication number: CN110878458B
Application number: CN201811011162.XA
Authority: CN
Inventors: 王嘉; 吴登军; 孙锦; 宋三力
Original assignee: Wuxi Little Swan Electric Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2022-08-05
Anticipated expiration: 2038-08-31
Also published as: CN110878458A

Abstract

The invention relates to the field of washing machines, and discloses a washing machine.A first washing cavity is arranged in an outer shell (6), a first clothes putting-in opening (w) and a door cover component (30) are arranged on the outer shell, the door cover component comprises an outer sealing door (302), an inner cylinder (7) and an inner sealing door (301), the axial outer end of the inner cylinder is fixedly connected to the inner side of the outer sealing door to form a second washing cavity, an air pressure cavity (10) is formed between the inner cylinder and the inner sealing door, bottom plate air holes (305a) for connecting an air pressure cavity and the second washing cavity are distributed at the bottom of the inner cylinder, and the door cover component is provided with a door cover air inlet (404a) communicated with the air pressure cavity and a door cover air outlet (402a) communicated with the second washing cavity. The washing machine of the present invention can form double washing cavities suitable for classified washing by the improved design of the door cover assembly. The second washing chamber in the door cover assembly adopts a non-mechanical force washing mode, so that the internal structure is simpler, the safety and reliability are higher, and the service life is longer.

Description

Washing machine

Technical Field

The invention relates to the field of washing machines, in particular to a classified washing machine.

Background

A plurality of water level steps are generally provided in the washing machine to wash laundry of corresponding weight or capacity. However, the washing machine usually has only a single washing chamber with a large volume, and even at the lowest water level, the required water amount is large, and for single-piece and small-size clothes, water resources and electric power resources are obviously wasted excessively. And because of a single washing cavity, clothes with different colors and types need to be washed in different batches in order to avoid cross contamination or damage to the clothes, the washing can not be finished at one time, the time consumption is long, and the operation of a user is very inconvenient.

For this reason, research and development personnel are gradually involved in the research of washing machines having a plurality of washing chambers. For example, some washing machines having two independent washing tubs are available in the market, and can perform classified washing simultaneously, but the washing tubs of the washing machines occupy more space of the machine body, so that the whole size of the washing machine is increased, and more space of a home is occupied.

Chinese patent CN104805630B discloses a washing machine having a plurality of outer tubs, which can perform washing in a plurality of spaces. The washing machine having a plurality of outer tubs includes: a casing, wherein the first outer barrel is accommodated in the casing; a first door for opening and closing the laundry inlet formed on the housing, the first door having a second tub; a second door for opening and closing the inlet of the second outer barrel; a first water supply unit and a second water supply unit for respectively supplying washing water to the inside of the first outer tub and the inside of the second outer tub; and a first and a second drainage unit for draining the washing water inside the first and the second outer tub. In the technical scheme of this patent, the inside of above-mentioned second outer bucket is located with rotatory mode to the second cylinder and has drive unit, and its revolution mechanic, drive structure and walk line structure etc. are very complicated, and fail safe and reliable is poor, and drive unit's heat dissipation is bad, and the rotation of second cylinder also produces the damage to the door body easily. Therefore, the scheme is easy to have problems in the aspects of sealing, heat dissipation, fixing and the like of motor driving and magnetic field driving, and the manufacturing and maintenance cost is relatively high.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, the present invention provides a washing machine having an inner chamber of a door assembly adapted for both classified washing and airflow-assisted washing, with a safer and more reliable door structure and a longer service life.

In order to achieve the above purpose, the present invention provides a washing machine, which includes an outer casing, wherein a first washing cavity is arranged in the outer casing, a first laundry input opening of the first washing cavity and a door cover assembly for opening or closing the first laundry input opening are arranged on the outer casing, the door cover assembly includes an outer sealing door, an inner cylinder and an inner sealing door, an axial outer end of the inner cylinder is fixedly connected to an inner side of the outer sealing door to form a second washing cavity, a closed inner end of the inner cylinder extends into the inner sealing door to form an air pressure chamber between the inner cylinder and the inner sealing door, bottom holes communicating the air pressure chamber and the second washing cavity are distributed at a bottom portion of the inner cylinder, and the door cover assembly is provided with a door cover air inlet communicated with the air pressure chamber and a door cover air outlet communicated with the second washing cavity.

In a preferred embodiment, the inner-sealing door is openably and closably pivotally connected to a peripheral portion of the first laundry input opening to open or close the first laundry input opening, and the outer-sealing door is openably and closably pivotally connected to a peripheral portion of the inner-sealing door to open or close an opening of the inner-sealing door.

Furthermore, a second clothes input opening and a small door component for opening or closing the second clothes input opening are formed in the top of the peripheral wall of the inner drum.

More preferably, the inside-sealed door is a perspective glass door, and the outside-sealed door is provided with an outside-sealed door observation window.

Preferably, the door cover assembly comprises a door ring fixing assembly for fixing the inner sealing door to the inner side of the outer sealing door, the peripheral edge of the door ring fixing assembly is in sealing abutting connection with the peripheral edge of the inner sealing door, and the door cover air inlet and the door cover air outlet are both arranged at the top of the door ring fixing assembly.

More preferably, the door cover vent penetrates through the top of the outer peripheral wall of the axially outer end of the inner cylinder.

Wherein, the door closure subassembly still preferably includes outer door sealing washer, outer door sealing washer seals the peripheral part of door circle fixed subassembly with the peripheral part of outer door between the circumferential direction clearance.

Also preferably, the door assembly further comprises a plenum seal ring circumferentially sealing the air pressure chamber.

Preferably, the washing machine comprises an air flow auxiliary washing system, the air flow auxiliary washing system comprises an air pump, a shell air inlet connected with an exhaust end of the air pump is formed in the outer shell, and the door cover air inlet is in butt joint with the shell air inlet when the door cover assembly closes the first clothes throwing-in opening.

Further, a shell exhaust port is arranged on the outer shell and connected to a main drainage pipe of the washing machine through an exhaust pipe, and when the door cover assembly closes the first clothes throwing port, the door cover exhaust port is connected with the shell exhaust port.

Furthermore, the washing machine also comprises a micro-bubble washing system, the micro-bubble washing system comprises a micro-bubble generating device, a shell water inlet and a shell water outlet which are arranged on the outer shell, and a door cover water inlet and a door cover water outlet which are correspondingly arranged on the door cover component, and a water inlet control valve and a micro-bubble generating device are sequentially arranged in a micro-bubble water inlet pipe connected with the shell water inlet;

when the door cover component closes the first clothes throwing-in opening, the shell water inlet is in butt joint with the door cover water inlet, and the shell water outlet is in butt joint with the door cover water outlet.

Furthermore, the microbubble washing system further comprises a circulating water pipe provided with a circulating booster pump, and the circulating water pipe is connected with the shell water outlet and the microbubble generating device.

Further, the microbubble washing system further comprises a microbubble draining pipe connected with the casing draining port and provided with a draining control valve, the microbubble draining pipe and the first draining pipe of the first washing unit are connected to a main draining pipe of the washing machine, and the main draining pipe is provided with a draining pump.

Furthermore, a flow meter is arranged in the microbubble water inlet pipe.

In addition, the gas flow assisted scrubbing system can also create a pressurized gas flow through the scrubbing liquid in the first scrubbing chamber.

In the washing machine, the inner cylinder is arranged in the door cover component, the cylinder cavity between the inner cylinder and the outer sealing door is formed into a second washing cavity, the air pressure cavity is formed between the inner cylinder and the inner sealing door, and the door cover component is provided with a door cover air inlet communicated with the air pressure cavity and a door cover air outlet communicated with the second washing cavity, so that double washing cavities can be formed in the washing machine to be suitable for classified washing. Especially, the second washing cavity is a static washing cavity, is suitable for air blowing or air extraction type washing of an air flow auxiliary washing system, and compared with mechanical washing of a roller and the like, electrical equipment, a driving unit, routing and the like do not need to be additionally arranged on the door cover assembly, so that the internal structure of the door cover assembly is simpler, and the use safety and reliability of the door cover assembly are improved.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of a washing machine according to a first preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 illustrates the washing machine of FIG. 1 with the door assembly in an open state;

FIG. 4 is a partial front view of a portion of the door assembly;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

fig. 6 shows the structural composition of the gas flow-assisted washing system and the micro bubble washing system in the washing machine;

FIG. 7 is a front view of an inner tub in a washing machine in accordance with a second preferred embodiment of the present invention;

FIG. 8 is a bottom view of the inner barrel;

FIG. 9 is a schematic view showing the door assembly in a side-open and door-open state as a whole;

FIG. 10 is a side view of the washing machine shown in FIG. 9;

FIGS. 11 and 12 respectively illustrate the opening and closing states of the small door assembly when the inner seal door closes the first laundry input opening and the outer seal door and the inner drum open towards the lower side;

FIG. 13 is a schematic top view of the door assembly mounting structure in the washing machine of FIG. 9;

FIG. 14 is a cross-sectional view E-E of FIG. 13;

FIG. 15 is a cross-sectional view F-F of FIG. 13;

FIG. 16 is a sectional view taken at H-H in FIG. 13; and

fig. 17 is a sectional view taken along line G-G in fig. 13.

Description of the reference numerals

1 first roller 2 first outer cylinder

3 first drain pipe 4 drain pump

5 Total drainpipe 6 outer casing

7 inner cylinder 8 outer sealing door sealing ring

9 air chamber sealing ring 10 air pressure chamber

w first clothes inlet w' second clothes inlet

30 door cover assembly 70 air pump

301 inner sealing door 302 outer sealing door

302a outer door observation window

303 door ring fixing component 304 small door component

305 Cavity floor 305a floor vent

401a water inlet of the shell 401a door cover

402 housing exhaust port 402a door cover exhaust port

403 casing drain 403a door cover drain

404 housing inlet 404a door cover inlet

501 water inlet control valve 502 flowmeter

503 micro-bubble generating device 504 water discharge control valve

601 microbubble inlet tube 602 circulating water pipe

603 micro-bubble drain pipe 604 circulation booster pump

701 inlet pipe 702 exhaust pipe

A water inlet channel and B water outlet channel

C air inlet channel and D exhaust channel

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like are generally described with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction. The terms of orientation such as "inner and outer" are generally with respect to the radial direction of the center or center of gravity of the washing machine cavity.

The invention provides a washing machine in a targeted manner in order to realize classified washing, save space and improve the reliability of the whole machine. The invention is explained in detail below with reference to the figures and in connection with preferred embodiments.

Referring to fig. 1 to 6, in the first preferred embodiment, the washing machine according to the present invention includes a first washing unit having a first washing chamber and a second washing unit having a second washing chamber, i.e., it is possible to perform classified washing, improving user satisfaction. In particular, the second washing unit further comprises a gas flow assisted washing system for creating at least a pressure gas flow through the washing liquid in the second washing chamber for improving the flowability of the washing liquid.

The invention adopts a brand new washing mode, namely a pressure airflow auxiliary washing mode to boost the flow of washing liquid, and has better washing efficiency, sterilization and cleaning effects. In particular, the effect of the gas flow assisted scrubbing is more pronounced when the second scrubbing chamber is preferably a static scrubbing chamber. Compared with roller washing, the water flow in the static washing cavity is relatively poor in mobility, rolling drive, electric control wiring and the like are reduced, the installation difficulty and poor installation of a mechanical structure are reduced, and the structural reliability, the electricity utilization safety and the like are greatly improved. The pressure airflow auxiliary washing mode is non-mechanical force washing and is a care type washing mode, and zero abrasion and zero winding are achieved.

In order to realize the classified washing without enlarging the size of the washing machine, as shown in fig. 2 and 3, the second washing chamber is preferably provided in the door assembly 30, and the door assembly 30 is used to open or close the first laundry input port w of the first washing chamber provided in the outer case 6 of the washing machine. Effectively utilizes the cavity in the door cover component 30, saves space and has more compact structure. Of course, the second washing chamber in the present invention does not exclude other spaces provided in the outer casing 6.

In the present embodiment, as shown in fig. 3 to 6, an air pump 70 is used as an air source to form the airflow assisted washing system, a housing inlet 404 connected to an exhaust end of the air pump 70 through an air inlet pipe 701 is provided on the outer housing 6, and a door inlet 404a and a door outlet 402a are provided on the door assembly 30. When the door assembly 30 is closed, i.e., the first laundry input opening w is closed, the door inlet 404a is abutted against the housing inlet 404, and the air is completely supplied, and the pressure air flow can flow into the second washing chamber in the door assembly 30.

The air pump 70 may be an air pump for blowing air into the second washing chamber, or may be a suction pump for sucking air into the second washing chamber, that is, the air pump is not limited to the air blowing or air sucking method for forming the pressure air flow.

Wherein the pressurized airflow in the second washing chamber can be directly exhausted from the door assembly 30 to equalize the air pressure in the chamber. In the present embodiment, the outer casing 6 is provided with a casing outlet 402, and the casing outlet 402 is connected to the main drain pipe 5 of the washing machine through an exhaust pipe 702. Accordingly, when the door assembly 30 closes the first laundry input opening w, the door exhaust opening 402a is also simultaneously engaged with the housing exhaust opening 402, and the exhaust air of the second washing chamber is preferably discharged to the main drain pipe 5.

Because the physical connection between the air ports is realized by opening and closing the cover of the door cover assembly 30 to control the on-off of the pressure air flow, it is preferable to adopt a flexible interface connection mode between the air ports, that is, the door cover air inlet 404a and the shell air inlet 404 and the door cover air outlet 402a and the shell air outlet 402 are connected by flexible pipe joints. It will be appreciated by those skilled in the art that such flexible pipe joints may be particularly plastic casing joints and the like, and even various movable joints.

In the airflow channel in the second washing chamber, a chamber bottom plate 305 for carrying the laundry and densely covering the bottom plate air holes 305a is disposed, as shown in fig. 5. In fig. 3, the door inlet 404a is disposed at the bottom of the door assembly 30, and the pressure air flow entering from the door inlet 404a passes through the floor air holes 305a from bottom to top and flows out from the door outlet 402 a. Thus, the pressure air flow is dispersed into the second washing chamber from each bottom plate air hole 305a, and the washing liquid in the second washing chamber is driven by the pressure air flow of the bottom plate air holes 305a, so that bubbles, liquid stirring, vortex and the like are realized, and the flowing of the washing liquid and the tumbling of the clothes are effectively promoted.

In addition, the second washing chamber should be provided with a small door in order to facilitate delivery of the laundry to the second washing chamber. Specifically, referring to fig. 5 and 6, the door assembly 30 further includes a second laundry input opening w 'of the second washing compartment and a small door assembly 304 for opening or closing the second laundry input opening w'. The wicket assembly 304 may be flipped open to insert laundry or add wash liquor, detergent, etc. The small door assembly 304 seals the second laundry input port w' when closed, preventing air leakage.

As an example, the washing machine in the present embodiment is specifically a drum washing machine, and includes an outer casing 6 and a first washing unit disposed inside the outer casing 6, the first washing unit includes a first outer tub 2 and a first drum 1 coaxially disposed, and a tub cavity of the first drum 1 is formed as a first washing cavity. The volume of the second washing cavity arranged in the door cover component 30 is far smaller than that of the first washing cavity, so that the second washing cavity is suitable for classified washing, and the second washing cavity in the door cover component 30 is particularly suitable for washing small and loose parts such as socks, underwear and the like, saves water, and is suitable for nursing washing and soaking.

The first washing unit adopts a rotary drum washing mode, but further, the airflow auxiliary washing system can also be arranged in the first washing unit to form pressure airflow flowing through the washing liquid in the first washing cavity, namely, the first washing unit can also introduce airflow auxiliary washing to improve the washing effect of the first washing unit.

In the drum washing machine, the door assembly 30 generally includes an outer door 302 and an inner door 301, the inner door 301 is formed in a convex cylinder shape protruding toward the first washing chamber, or referred to as inner door glass, and the outer door 302 may include an anti-burn cover, a viewing window, and the like. A second washing chamber may be formed in a cavity between the outer door 302 and the inner door 301. Preferably, the inner door 301 of fig. 5 is formed in a shape of a horizontally disposed cylinder, and the second washing chamber is formed as a cylinder chamber, and the second laundry input port w' may be opened at the top of the outer circumferential wall of the inner door 301 and covered by the small door assembly 304. The door cover assembly 30 generally further includes a door ring fixing assembly 303 having an annular periphery for fixing the outer door 302 and the inner door 301, and the door ring fixing assembly 303 includes various sealing rings. In this manner, the door cover intake port 404a and the door cover exhaust port 402a may be preferably provided on the door ring fixing assembly 303.

The formation of the second washing chamber in the door assembly 30 and the introduction of the airflow assisted washing system are explained above. Further, a microbubble wash system adapted to a static wash chamber is also introduced. Referring also to fig. 6, the micro-bubble washing system includes a micro-bubble generating device 503, a housing water inlet 401 and a housing water outlet 403 disposed on the outer housing 6, and a door cover water inlet 401a and a door cover water outlet 403a disposed on the door cover assembly 30, and a water inlet control valve 501 and the micro-bubble generating device 503 are sequentially disposed in a micro-bubble inlet pipe 601 connected to the housing water inlet 401. When the door assembly 30 closes the first laundry loading opening w, the housing inlet 401 is abutted to the door inlet 401a, and the housing outlet 403 is abutted to the door outlet 403 a.

As will be appreciated by those skilled in the art, the micro-bubble generating device 503 (or referred to as a micro-bubble generator) is generally used to generate micro-bubbles with a diameter of less than fifty micrometers (μm) when bubbles are generated, and may also be referred to as micro-nano bubbles, micro-bubbles, nano-bubbles, or the like according to the diameter range of the bubbles. The micro-bubble is generated by melting a certain gas (such as air) into water under a specific pressure by changing the physical properties of the water to form a gas-water mixed solution, and then suddenly polymerizing the gas in the water to form micro-bubble water by expanding to release the pressure. The abundant kinetic energy of the micro bubble water and the wave of bubble explosion accelerate the water flow, thereby enhancing the washing effect. Therefore, as a general knowledge, the microbubble generator 503 and its own structural components will not be described in detail herein. When the micro-bubble generating device 503 generates micro-bubbles, the water pipe rapidly guides a large amount of micro-bubbles to the micro-bubble nozzle for spraying, so as to form negative pressure in the second washing chamber, and the negative pressure environment can promote generation of impact water flow, thereby achieving the purpose of washing clothes.

In order to recycle the microbubble washing fluid, the microbubble washing system further includes a water circulation pipe 602 provided with a circulation pressurizing pump 604, and the water circulation pipe 602 connects the housing water outlet 403 and the microbubble generator 503. The microbubble washing fluid discharged from the casing water discharge port 403 is returned to the microbubble generator 503 through the circulation water pipe 602 and the circulation pressurizing pump 604, and is repeatedly recycled to save water and continuously generate microbubble water.

In addition, for metering and automatic control of water inflow, a flow meter 502 is provided in the microbubble water inlet pipe 601, and the flow meter 502 is preferably provided upstream of the microbubble generation device 503 and downstream of the water inlet control valve 501.

As for the drainage design, as shown in fig. 6, the microbubble washing system in the present embodiment further includes a microbubble drain pipe 603 connected to the case drain port 403 and provided with a drain control valve 504, the microbubble drain pipe 603 and the first drain pipe 3 of the first washing unit are connected to a main drain pipe 5 of the washing machine, and the main drain pipe 5 is provided with a drain pump 4. Thus, a compact and efficient drainage pipe structure can be formed.

It can be seen that when small items of laundry need to be sorted for washing, the door assembly 30 can be opened, then the door assembly 304 opened, the laundry is thrown into the second washing chamber, then the door assembly 304 closed, finally the door assembly 30 closed, and power is turned on to start the washing operation.

Specifically, as shown in fig. 6, the inlet water sequentially passes through the inlet water control valve 501, the flow meter 502, the micro-bubble generating device 503, the micro-bubble inlet pipe 601, the housing water inlet 401 on the front door panel of the outer housing 6, and the door cover water inlet 401a, and enters the second washing tub, and the flow meter 502 controls the amount of water required for washing. After reaching a certain water volume standard, the circulating booster pump 604 in the micro-bubble generating device 503 works to make the washing water flow back to the flow meter 502 and the micro-bubble generating device 503 again through the door cover water outlet 403a, the shell water outlet 403 on the front door panel and the circulating water pipe 602, so as to achieve continuous circulation and continuous micro-bubble generation, thereby achieving the washing and sterilizing effects on the clothes.

During washing, the air pump 70 is used to generate an air blowing effect, blown air enters the second washing tub through the air inlet pipe 701, the housing air inlet 404 on the front door panel and the door cover air inlet 404a on the door cover assembly 30, high-pressure air flow impacts micro-bubble washing fluid through the bottom plate air holes 305a on the cavity bottom plate 305 to promote the rolling of water flow, so that the washing effect is improved.

As shown in fig. 6, when draining, the drain control valve 504 is opened, and the washing water in the second washing unit enters the micro-bubble drain pipe 603 and the drain control valve 504 through the door drain opening 403a of the door assembly 30 and the case drain opening 403 of the front door, and is finally drained through the first drain pipe 3, the drain pump 4 and the main drain pipe 5 by the drain pump 4.

It can be seen that when the microbubble washing mode and the gas flow assisted washing mode are introduced simultaneously in the second washing unit, the microbubble mode promotes the generation of the water flow in the second washing chamber. Further, by the high pressure air flow entering the second washing chamber through the bottom plate air holes 305a, the micro bubble washing fluid is constantly impacted, and the tumbling of the water flow drives the clothes to be further tumbled and stirred, thereby further improving the washing effect of the clothes.

The invention adopts a brand new washing mode, the second washing unit is a static washing cavity, and the poor reliability caused by mechanical movement is greatly reduced; the washing and sterilization of the clothes by adopting micro bubbles and air blowing type washing have certain obvious effect; the door assembly 30 is not over-heavy to cause poor reliability; the door cover component is internally provided with no rotary driving unit, so that an electric appliance wire harness does not need to be assembled in the door cover component, and the mounting difficulty and poor mounting are greatly reduced; a second washing unit is designed in the impeller door for classified washing without increasing the space size; the adoption of the micro-bubble and air-blowing washing can realize the care washing, has zero abrasion and zero winding, and abandons the traditional mechanical washing.

Fig. 7 to 17 illustrate a washing machine according to a second preferred embodiment of the present invention. Similarly, a first washing chamber is provided in the outer casing 6 of the washing machine, and a first laundry input port w of the first washing chamber and a door assembly 30 for opening or closing the first laundry input port w are provided on the outer casing 6.

Unlike the first preferred embodiment, the door cover assembly 30 includes not only the outer door 302 and the inner door 301, but also the inner drum 7, the axially outer end of the inner drum 7 (i.e. the right end of the inner drum 7 shown in fig. 14) is fixedly connected to the inner side of the outer door 302 to form a second washing chamber, the closed inner end of the inner drum 7 (i.e. the left end of the inner drum 7 shown in fig. 14) extends into the inner door 301 to form the air pressure chamber 10 between the inner drum 7 and the inner door 301, and the bottom of the inner drum 7 is distributed with the bottom plate air holes 305a connecting the air pressure chamber 10 and the second washing chamber, as shown in fig. 7 and 8. The door assembly 30 has a door inlet 404a leading into the air pressure chamber 10 and a door outlet 402a communicating with the second washing chamber.

Since the special inner cylinder 7 with the second washing chamber is additionally provided, the structure, airflow channel and water path design of the door cover assembly 30 are more complicated to obtain a better washing effect, which will be described in detail below with reference to the accompanying drawings.

Wherein a small door assembly 304 of the second washing chamber may be provided at a front side of the door cover assembly 30, for example, an outer door window 302a designed to be opened and closed is provided as the small door assembly 304. In the embodiment of fig. 7 to 17, the inner sealing door 301 is pivotally connected to a peripheral portion of the first laundry input opening w in an openable and closable manner to open or close the first laundry input opening w, and the outer sealing door 302 is pivotally connected to a peripheral portion of the inner sealing door 301 in an openable and closable manner to open or close an opening of the inner sealing door 301, so that the top of the outer peripheral wall of the drum 7 may be provided with a second laundry input opening w 'and a small door assembly 304 for opening or closing the second laundry input opening w'.

As shown in fig. 9 to 12, the door assembly 30 is opened as a whole laterally, and is pivoted to open and close along a vertical axis arranged along the upper side of the outer case 6 to open or close the first laundry feeding opening w; when the inner-sealing door 301 closes the first laundry input opening w, the outer-sealing door 302, together with the inner drum 7, serves as a flip-down door that pivots open and close along a lateral axis disposed along the bottom of the inner-sealing door 301 to open or close the second laundry input opening w'. Of course, the present invention is not limited to the door opening pivoting manner and structure shown in the drawings, and it is understood that the door cover assembly 30 may be a downward-turning door, and the outer-sealing door 302 together with the inner tube 7 may be formed as a side-opening door.

The washing liquid of the second washing chamber can be fed/discharged through the small door assembly 304 or can be fed/discharged through the door cover inlet/outlet. As shown in fig. 10, the inner door 301 is a glass-see-through door, and the outer door 302 may have an outer door viewing window 302 a.

Similarly, the door cover assembly 30 includes a door ring fixing assembly 303, the door ring fixing assembly 303 is used for fixing the inner door 301 to the inner side of the outer door 302, and the peripheral edge portion of the door ring fixing assembly 303 is in sealing contact with the peripheral edge portion of the inner door 301, as shown in fig. 14 to 17.

Referring to fig. 9, unlike the first preferred embodiment, both the door cover air inlet 404a and the door cover air outlet 402a are provided at the top of the door ring fixing assembly 303, and the door cover air outlet 402a penetrates through the top of the outer peripheral wall of the axially outer end of the inner tube 7, so that the air flow can pass through the air pressure chamber 10 between the inner tube 7 and the inner closing door 301.

To enhance the sealing performance, the door cover assembly 30 further includes an outer door sealing ring 8, and the outer door sealing ring 8 seals a circumferential gap between a peripheral portion of the door ring fixing assembly 303 and a peripheral portion of the outer door 302. The door assembly 30 further includes a dome seal 9 that circumferentially seals the air pressure chamber 10, as shown in fig. 14-17.

Similar to fig. 6, the airflow assisted scrubbing system also includes an air pump 70. Referring to fig. 9, the outer casing 6 is provided with a casing inlet 404 connected to an exhaust end or an inlet end of the air pump 70, and when the door assembly 30 closes the first laundry loading port w, the door inlet 404a is abutted to the casing inlet 404. The outer case 6 is provided with a case outlet 402, the case outlet 402 is connected to the main drain pipe 5 of the washing machine through an exhaust pipe 702, and the door outlet 402a is engaged with the case outlet 402 when the door assembly 30 closes the first laundry input port w.

Similarly, the washing machine further comprises a micro-bubble washing system, the micro-bubble washing system comprises a micro-bubble generating device 503, a shell water inlet 401 and a shell water outlet 403 which are arranged on the outer shell 6, and a door cover water inlet 401a and a door cover water outlet 403a which are correspondingly arranged on the door cover assembly 30, and a water inlet control valve 501 and the micro-bubble generating device 503 are sequentially arranged in a micro-bubble water inlet pipe 601 connected with the shell water inlet 401; when the door assembly 30 closes the first laundry loading opening w, the housing inlet 401 is abutted to the door inlet 401a, and the housing outlet 403 is abutted to the door outlet 403 a. The microbubble washing system further includes a circulating water pipe 602 provided with a circulating booster pump 604, and the circulating water pipe 602 connects the housing water outlet 403 and the microbubble generator 503.

In the drain design, the microbubble washing system further includes a microbubble drain pipe 603 connected to the casing drain port 403 and provided with a drain control valve 504, the microbubble drain pipe 603 and the first drain pipe 3 of the first washing unit are connected to a main drain pipe 5 of the washing machine, and the main drain pipe 5 is provided with a drain pump 4. The microbubble water inlet pipe 601 is also provided with a flow meter 502.

Fig. 14 to 17 show the passage of gas and scrubbing liquid fluid into and out of the second scrubbing chamber, respectively, during operation of the second scrubbing unit, the flow direction of which is indicated by arrows.

As shown in fig. 17, the inside of the top of the door ring fixing assembly 303 is provided with a water inlet channel a which is turned downwards at a right angle and is arranged forwards, and the water inlet channel a penetrates through the top edges of the door ring fixing assembly 303 and the inner cylinder 7 from the door cover water inlet 401a and enters the cylinder cavity of the inner cylinder 7, namely the second washing cavity. The water inlet passage a is isolated from the air pressure chamber 10.

In fig. 14, a drainage channel B is shown, which is arranged at the bottom of the door cover assembly 30 and extends through the inner side of the door ring fixing assembly 303 at a right angle, i.e. is discharged from a door cover water outlet 403a on the inner side of the door ring fixing assembly 303 in the figure. Similarly, the air chamber packing 9 separates the air pressure chamber 10 from the drain passage B.

Referring to fig. 15 and 16, the intake passage C and the exhaust passage D, which are greatly different from the first preferred embodiment, are specifically shown. The air inlet channel C enters from the door cover air inlet 404a on the inner side of the top of the door ring fixing component 303, turns into the air pressure chamber 10 along the top periphery of the inner sealing door 301 at a right angle, and then reaches the bottom of the inner cylinder 7, and enters into the cylinder cavity (i.e. the second washing cavity) of the inner cylinder 7 through the bottom plate air hole 305 a. Finally, the high-pressure gas passes through the inner cylinder 7 and the top edge portion of the door ring fixing member 303 in order, turns at a right angle, and is finally discharged from the door cover exhaust port 402a on the inner side of the top portion of the door ring fixing member 303.

When the second washing unit works, the water entering the microbubble washing system generally flows through the bottom plate air holes 305a at the bottom of the inner drum 7, the high-pressure air flow generated by the air flow auxiliary washing system enters the air pressure chamber 10, and the air pressure forces the washing liquid at the bottom of the inner drum 7 to upwards gush out through the bottom plate air holes 305a to form water splash to drive the clothes to be washed.

It should be noted that except for the difference in the composition structure of the door assembly 30 and the design of the air path and the water path in the door assembly 30, the principles of the airflow assisted scrubbing system and the micro-bubble scrubbing system of the second preferred embodiment are the same as those of the first preferred embodiment, and therefore, the detailed description thereof is omitted.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. A washing machine, comprising an outer casing (6), a first washing cavity is arranged in the outer casing (6), a first clothes input opening (w) of the first washing cavity and a door cover component (30) for opening or closing the first clothes input opening (w) are arranged on the outer casing (6), the washing machine is characterized in that the door cover component (30) comprises an outer sealing door (302), an inner drum (7) and an inner sealing door (301), the outer sealing door (302) is pivotally connected to the edge part of the inner sealing door (301) in an openable manner so as to open or close the opening of the inner sealing door (301), the axial outer end of the inner drum (7) is fixedly connected to the inner side of the outer sealing door (302) so as to form a second washing cavity, the closed inner end of the inner drum (7) extends into the inner sealing door (301) so as to form an air pressure chamber (10) between the inner drum (7) and the inner sealing door (301), bottom plate air holes (305a) for communicating the air pressure chamber (10) with the second washing cavity are distributed in the bottom of the inner barrel (7), a door cover air inlet (404a) communicated with the air pressure chamber (10) and a door cover air outlet (402a) communicated with the second washing cavity are formed in the door cover assembly (30), and the inlet air flow of the door cover air inlet (404a) penetrates through the bottom plate air holes (305a) from bottom to top and is exhausted from the door cover air outlet (402 a); the top of the outer peripheral wall of the inner drum (7) is provided with a second clothes feeding opening (w ') and a small door assembly (304) for opening or closing the second clothes feeding opening (w '), when the inner sealing door (301) closes the first clothes feeding opening (w), the outer sealing door (302) and the inner drum (7) are used as a downward turning door, and the inner sealing door (301) is pivoted and opened along a transverse shaft arranged at the bottom of the inner sealing door (301) so as to open or close the second clothes feeding opening (w ').

2. The washing machine as claimed in claim 1, wherein the inner-sealing door (301) is openably and closably pivotally connected to a peripheral portion of the first laundry input opening (w) to open or close the first laundry input opening (w).

3. Washing machine, according to claim 1, characterized in that said inner door (301) is a glass door and said outer door (302) is provided with an outer door viewing window (302 a).

4. The washing machine according to claim 1, wherein the door cover assembly (30) comprises a door ring fixing assembly (303) for fixing the inner door (301) to the inner side of the outer door (302), the peripheral portion of the door ring fixing assembly (303) is in sealing abutment with the peripheral portion of the inner door (301), and the door cover air inlet (404a) and the door cover air outlet (402a) are both arranged at the top of the door ring fixing assembly (303).

5. A washing machine according to claim 4, characterized in that the door cover outlet (402a) extends through the top of the peripheral wall of the axially outer end of the inner drum (7).

6. The washing machine according to claim 4, wherein the door cover assembly (30) further comprises an outer door sealing ring (8), the outer door sealing ring (8) sealing a circumferential gap between a peripheral portion of the door ring fixing assembly (303) and a peripheral portion of the outer door (302).

7. Washing machine, according to claim 4, characterized in that said door assembly (30) further comprises a plenum seal (9) circumferentially sealing said air pressure chamber (10).

8. A washing machine according to any one of claims 1-7, characterized in that the washing machine comprises an air flow auxiliary washing system, the air flow auxiliary washing system comprises an air pump (70), a casing air inlet (404) connected with an air exhaust end of the air pump (70) is arranged on the outer casing (6), and when the door cover assembly (30) closes the first clothes input opening (w), the door cover air inlet (404a) is butted with the casing air inlet (404).

9. The washing machine according to claim 8, wherein a housing exhaust port (402) is provided on the outer housing (6), the housing exhaust port (402) is connected to a main drain pipe (5) of the washing machine through an exhaust pipe (702), and the door exhaust port (402a) engages the housing exhaust port (402) when the door assembly (30) closes the first laundry input port (w).

10. The washing machine according to claim 8, further comprising a micro-bubble washing system, the micro-bubble washing system comprising a micro-bubble generating device (503), a housing water inlet (401) and a housing water outlet (403) provided on the outer housing (6), and a door cover water inlet (401 a) and a door cover water outlet (403 a) provided on the door cover assembly (30) correspondingly, wherein a water inlet control valve (501) and a micro-bubble generating device (503) are sequentially provided in a micro-bubble water inlet pipe (601) connected to the housing water inlet (401);

wherein, when the door cover assembly (30) closes the first clothes input opening (w), the shell water inlet (401) is butted with the door cover water inlet (401 a), and the shell water outlet (403) is butted with the door cover water outlet (403 a).

11. The washing machine according to claim 10, wherein the micro-bubble washing system further comprises a circulation water pipe (602) provided with a circulation booster pump (604), the circulation water pipe (602) connecting the housing drain port (403) and the micro-bubble generating device (503).

12. A washing machine according to claim 11, characterized in that the microbubble washing system further comprises a microbubble drain pipe (603) connected to the casing drain (403) and provided with a drain control valve (504), the microbubble drain pipe (603) and the first drain pipe (3) of the first washing chamber being connected to a main drain pipe (5) of the washing machine, the main drain pipe (5) being provided with a drain pump (4).

13. A washing machine according to claim 10, characterized in that a flow meter (502) is provided in the microbubble water inlet pipe (601).

14. A washing machine as claimed in claim 8 wherein the airflow assisted washing system also creates a pressure airflow through the washing liquid in the first washing chamber.