WO2019237940A1

WO2019237940A1 - Front loading washing machine, and spraying system, outer drum, inner drum component and transmission shaft thereof

Info

Publication number: WO2019237940A1
Application number: PCT/CN2019/089331
Authority: WO
Inventors: 吕佩师; 许升; 赵志强; 赵新宇
Original assignee: 青岛海尔滚筒洗衣机有限公司
Priority date: 2018-06-15
Filing date: 2019-05-30
Publication date: 2019-12-19

Abstract

A front loading washing machine and a spraying system and outer drum (2) thereof. The spraying system comprises a circulating pump (11) and a plurality of spray holes (221); a water inlet of the circulating pump (11) leads to the inside of the outer drum (2); a water outlet of the circulating pump (11) is communicated with the plurality of spray holes (221), separately; the circulating pump (11) is used for pumping washing water in the outer drum (2) to the plurality of spray holes (221); the plurality of spray holes (221) is all provided at the bottom of the outer drum (2), and the water outlet of each spray hole (221) is directed to the inner drum (3), so that each spray hole (221) is able to spray the washing water pumped by the circulating pump (11) into the inner drum (3). The spraying system avoids a situation where washing water sprayed by spray holes completely cover the front end of an outer drum, so that a user is able to clearly observe the washing condition of the clothes in an inner drum by means of a glass observing window.

Description

Drum washing machine and its spraying system, outer cylinder, inner cylinder assembly, transmission shaft assembly

Technical field

The invention belongs to the technical field of laundry treatment equipment, and specifically provides a drum washing machine and a spraying system thereof, an outer cylinder, an inner cylinder component, and a transmission shaft component.

Background technique

The existing drum washing machine originated in Europe, and mainly includes a box body, an outer tube, and an inner tube from the outside to the inside. The drum washing machine works in a similar way to hammering clothes with a hammer. During operation, the inner cylinder is driven by the driving motor. With the rotation of the inner cylinder, the laundry is continuously lifted and dropped in the drum, and then lifted and dropped again, and repeat the exercise. With the help of washing powder and water, the laundry is washed clean.

In order to improve the effect of water washing and rinsing, some drum washing machines are also provided with a circulating spray device. For example, the drum type washing machine disclosed in the patent document with publication number CN102482834B has a circulation path therein, one end of the circulation path leads to the bottom end of the water tank (outer cylinder), and the other end of the circulation path leads to the opening of the water tank Multiple jets on the edge. The circulation path can supply washing water from the bottom end of the water tank to the plurality of spray outlets, and then spray the washing water into the drum (inner tube) to circulate and rinse the laundry.

However, the circulating spraying device (specifically, the nozzle or the water spout) of the existing drum washing machine is provided near the front end of the outer tub, and the washing water is sprayed into the inner tub from the outer tub port. When the user observes the clothes from the glass observation window, the sprayed water flow will affect the user's sight, so that the user cannot know the current washing situation of the clothes.

Accordingly, there is a need in the art for a new drum washing machine and its spray system to solve the above problems.

Summary of the Invention

In scenario one:

In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing circulating spray device affects the user to observe the underwear of the drum washing machine through the glass observation window, the present invention provides a spraying system of the drum washing machine. The washing machine includes a cabinet, an outer cylinder fixedly disposed in the cabinet, and an inner cylinder rotatably disposed in the outer cylinder. The spray system includes a circulation pump and a plurality of spray structures. The water inlet opens into the outer cylinder, and the water outlet of the circulation pump communicates with the plurality of spray structures, and the circulation pump is used to pump the washing water in the outer cylinder to the plurality of sprays. Structure; the plurality of spray structures are arranged at the rear of the outer cylinder, and the water outlet of each of the spray structures is directed to the inner cylinder, so that each of the spray structures can The washing water pumped by the circulation pump is sprayed into the inner cylinder.

In a preferred technical solution of the above-mentioned spraying system, the spraying system further includes a water cavity, and the circulation pump is respectively communicated with the plurality of spray structures by means of the water cavity.

In a preferred technical solution of the above spraying system, the water cavity is formed at a bottom end of the outer cylinder.

In a preferred technical solution of the above-mentioned spraying system, the outer cylinder includes an outer cylinder body and a cover, the cover and the bottom end of the outer cylinder body are sealedly connected, and the water cavity is formed between the cover and the cover. Between the outer cylinder bodies.

In a preferred technical solution of the above-mentioned spraying system, a side of the bottom end of the outer cylinder body facing the cover is provided with a first groove constituting the water cavity; and / or the cover faces the A second groove constituting the water cavity is provided on one side of the bottom end of the outer cylinder body.

In a preferred technical solution of the above spraying system, the spraying structure is a spraying hole formed in the outer cylinder.

In a preferred technical solution of the above-mentioned spraying system, the spraying structure is a nozzle or a nozzle fixed to the outer cylinder.

In a preferred technical solution of the above-mentioned spraying system, the plurality of spraying structures are arranged at equal intervals around the axis of the outer cylinder; and / or, a position corresponding to the spraying structure is provided on the inner cylinder. Hole, the washing water sprayed from the spray structure passes through the through hole and enters the inner cylinder.

In addition, the present invention also provides an outer tub of a drum washing machine, and a plurality of spray structures are provided at a rear portion of the outer tub.

In addition, the present invention also provides a drum washing machine including the above-mentioned spraying system; and / or the drum washing machine including the above-mentioned outer tub.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, by arranging a plurality of spray structures at the rear of the outer cylinder, the situation in which the washing water sprayed by the spray structure completely covers the front end of the outer cylinder, The user can clearly observe the washing condition of the laundry in the inner tub through the glass observation window.

In a feasible embodiment of the present invention, the bottom end of the outer cylinder is provided with a water cavity, and the side of the outer cylinder facing the inner cylinder is provided with a plurality of spray holes communicating with the water cavity at equal intervals. A through hole is provided at the bottom end of the inner cylinder corresponding to the spray hole. When the circulation pump pumps the washing water in the outer tub into the water cavity, the spray holes can spray the washing water into the inner tub through the through holes to spray the laundry. Preferably, part of the washing water sprayed from the spray hole can be sprayed on the glass observation window and the sealing window pad, so as to clean the glass observation window and the sealing window pad, and ensure the cleanliness of the glass observation window and the sealing window pad.

In scenario two:

In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing circulating spray device affects the user to observe the underwear of the drum washing machine through a glass observation window, the present invention provides an inner drum assembly of the drum washing machine The barrel assembly includes an inner barrel body, a water cavity provided on the inner barrel body, and a plurality of spray holes provided on the inner barrel body. The plurality of spray holes are respectively communicated with the water cavity. The spray holes are used to spray tap water or washing water in the water cavity into the inner cylinder body.

In a preferred technical solution of the inner cylinder assembly, the inner cylinder assembly further includes a cap, the cap is sealedly connected to a bottom end of the inner cylinder body, and the water cavity is formed between the cap and the cap. Between the inner cylinder body.

In a preferred technical solution of the inner cylinder assembly, a side of the bottom end of the inner cylinder body facing the cover is provided with a first groove constituting the water cavity; and / or, the cover faces the A second groove constituting the water cavity is provided on one side of the bottom end of the inner cylinder body.

In a preferred technical solution of the inner cylinder assembly, the cover is disposed outside the inner cylinder body, and the cover is provided with a water inlet hole communicating with the water cavity.

In a preferred technical solution of the inner cylinder assembly, the inner cylinder assembly further includes a transmission shaft for driving the inner cylinder body to rotate, and one end of the transmission shaft is inserted into the water inlet hole to be fixedly connected to the cover. The transmission shaft is provided with a channel along the axial direction, one end of the channel is in communication with the water cavity, and the other end of the channel is open to the outside.

In a preferred technical solution of the inner cylinder assembly, the cover is triangular or Y-shaped; and / or the water cavity is triangular or Y-shaped.

In a preferred technical solution of the inner cylinder assembly, the plurality of spray holes are uniformly provided on the inner cylinder body.

In addition, the present invention also provides a drum washing machine, the drum washing machine includes a water supply device and the inner tube assembly according to any one of the preferred technical solutions of the inner tube assembly, and the water supply device is used for the water cavity Water supply.

In a preferred technical solution of the above-mentioned drum washing machine, the water supply device is a circulation pump, a water inlet of the circulation pump opens into the outer cylinder, and a water outlet of the circulation pump communicates with the water cavity.

In a preferred technical solution of the above-mentioned drum washing machine, the water supply device is a water inlet valve, a water inlet port of the water inlet valve is connected to a water source, and a water outlet port of the water inlet valve is in communication with the water cavity.

Those skilled in the art can understand that in the preferred technical solution of the present invention, by providing a plurality of injection holes on the inner cylinder body, in particular, a plurality of injection holes can be provided on the bottom of the inner cylinder body, thereby avoiding ejection. The washing water sprayed from the hole completely covers the front end of the inner cylinder body, so that the user can clearly observe the washing of the laundry in the inner cylinder body through the glass observation window.

In a feasible embodiment of the present invention, the drum washing machine of the present invention includes a box body, an outer tube fixedly disposed in the box body, and a circulation pump, and the inner tube assembly is pivotally disposed on the outer portion through a transmission shaft. Tube. A channel is provided on the transmission shaft, and one end of the channel is in communication with the water cavity. The water inlet of the circulation pump opens into the outer cylinder, and the water outlet of the circulation pump communicates with the other end of the channel. During operation, the circulation pump pumps the washing water in the outer cylinder to the water cavity through the channel, and then sprays the washing water into the inner cylinder body through a plurality of spray holes.

In scenario three:

In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing circulating spray device affects the user to observe the underwear of the drum washing machine through the glass observation window, the present invention provides a spray system of a drum washing machine The washing machine includes a cabinet, an outer cylinder fixedly disposed in the cabinet, an inner cylinder rotatably disposed in the outer cylinder, and a transmission shaft supporting and driving the inner cylinder to rotate. The spray system includes:

A plurality of spray holes, which are provided at the bottom of the inner cylinder;

A channel formed on the transmission shaft, and a water outlet end of the channel is respectively communicated with the plurality of spray holes;

The circulation pump has a water inlet opening into the outer cylinder, and a water outlet of the circulation pump communicating with the water inlet end of the channel. The circulation pump is used for pumping the washing water in the outer cylinder to the channel, so that The plurality of spray holes spray washing water into the inner cylinder.

In a preferred technical solution of the above spraying system, the channel penetrates the transmission shaft along the axial direction of the transmission shaft.

In a preferred technical solution of the above spraying system, the spraying system further includes a water cavity provided at the bottom of the inner cylinder, and the water cavity is located between the channel and the plurality of spray holes and communicates with the spray hole. The water outlet end of the channel communicates with the plurality of spray holes, respectively.

In a preferred technical solution of the above-mentioned spray system, the plurality of spray holes are arranged at equal intervals around the axis of the inner cylinder.

In a preferred technical solution of the above-mentioned spraying system, the spraying system further includes a circulating water pipe, one end of the circulating water pipe is connected to the water outlet of the circulating pump, and the other end of the circulating water pipe is connected to the channel. The water inlet is connected.

In a preferred technical solution of the above-mentioned spraying system, the spraying system further includes a connecting member having a through hole, one end of the connecting member is fixedly connected to the transmission shaft, and the other end of the connecting member is connected to the circulation The other end of the water pipe is rotationally sealed and connected, so that the circulating water pipe and the channel communicate with each other through a through hole on the connecting member.

In addition, the present invention also provides a drive shaft assembly of a drum washing machine. The drum washing machine includes a box body, an outer tube fixedly disposed in the box body, and an inner tube rotatably disposed in the outer tube. The transmission shaft assembly includes a shaft for supporting and driving the inner cylinder to rotate, and a passage is formed on the transmission shaft; the drum washing machine further includes a circulation pump and a plurality of spray holes provided at the bottom of the inner cylinder, The water inlet of the circulation pump opens into the outer cylinder, the water outlet of the circulation pump communicates with the water inlet end of the channel, and the water outlet end of the channel communicates with the plurality of spray holes, respectively; The circulation pump is used for pumping the washing water in the outer cylinder to the channel, so that the plurality of spray holes spray the washing water into the inner cylinder.

In a preferred technical solution of the above transmission shaft assembly, the transmission shaft assembly further includes a mounting bracket fixedly connected to or integrally formed with the transmission shaft, and the transmission shaft is connected to the inner cylinder through the mounting bracket.

In a preferred technical solution of the above transmission shaft assembly, the mounting frame is triangular or Y-shaped.

Further, the present invention also provides a drum washing machine, which comprises the spray system according to any one of the above-mentioned preferred technical solutions of the spraying system; or the drum-type washing machine includes the above-mentioned preferred technical solution of the drive shaft assembly. The drive shaft assembly of any one of the above.

Those skilled in the art can understand that in the preferred technical solution of the present invention, by setting a plurality of spray holes at the bottom of the inner cylinder, the situation that the washing water sprayed from the spray holes completely covers the front end of the inner cylinder is avoided, so that the user The washing condition of the laundry in the inner tub can be clearly observed through the glass observation window. Further, by providing a channel on the transmission shaft, the channel communicates the water outlet of the circulation pump with the plurality of injection holes, so that the circulation pump can pump the washing water in the outer cylinder to the plurality of injection holes, thereby making the injection The holes spray washing water into the inner cylinder.

In scenario four:

In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing circulating spray device affects the user to observe the underwear of the drum washing machine through the glass observation window, the present invention provides an inner drum assembly of the drum washing machine. The cylinder assembly includes an inner cylinder and a transmission shaft which are coaxially fixed together or integrally formed; the transmission shaft is provided with a channel along its axial direction; a bottom end of the inner cylinder is provided with a plurality of aligned with the channel. Spray hole; one end of the transmission shaft abuts the bottom end of the inner cylinder, and the channel and the plurality of spray holes are thus communicated.

In a preferred technical solution of the inner cylinder assembly, the transmission shaft includes a front portion and a rear portion, and a diameter of the channel in the rear portion is larger than a diameter of the channel in the front portion so as to increase the diameter of the channel. The area of the channel projected onto the rear end of the inner cylinder.

In a preferred technical solution of the inner cylinder assembly, the inner cylinder assembly further includes a mounting bracket, the mounting bracket includes an inner connecting portion and an outer connecting portion, and the mounting bracket is fixed to the front portion through the inner connecting portion. The connection bracket is made integrally, and the mounting bracket is fixedly connected with the inner cylinder through the outer connecting portion or integrally made.

In a preferred technical solution of the inner cylinder assembly, the inner cylinder assembly further includes a seal ring provided between the transmission shaft and the inner cylinder, and the transmission shaft and the inner cylinder are clamped by the seal. The ring achieves a sealed connection.

In a preferred technical solution of the inner cylinder assembly, an end of the transmission shaft near the inner cylinder is provided with an annular groove for receiving the seal ring.

In a preferred technical solution of the inner cylinder assembly described above, one of the plurality of injection holes is provided at an axis of the inner cylinder and points to an inner cylinder mouth of the inner cylinder; the remaining injection holes are wound around the inner cylinder. The axes of the cylinders are arranged symmetrically and point respectively to the side walls of the inner cylinder.

In addition, the present invention also provides a drum washing machine, which comprises a water supply device and the inner tube assembly according to any one of the preferred technical solutions of the inner tube assembly, and the water supply device is used to supply water to the channel. .

In a preferred technical solution of the above-mentioned drum washing machine, the water supply device is a circulation pump, a water inlet of the circulation pump opens into the outer cylinder, and a water outlet of the circulation pump communicates with the channel.

In a preferred technical solution of the drum washing machine, the drum washing machine further includes a circulating water pipe, and the circulating pump communicates with the channel through the circulating water pipe.

In a preferred technical solution of the above-mentioned drum washing machine, the water supply device is a water inlet valve, a water inlet port of the water inlet valve is connected to a water source, and a water outlet port of the water inlet valve is in communication with the channel.

Those skilled in the art can understand that, in a preferred technical solution of the present invention, a plurality of injection holes are provided at a position corresponding to the channel at the bottom end of the inner cylinder by providing a channel along the axis direction on the transmission shaft. The spray hole can spray the washing water provided by the channel into the inner tube from the bottom end of the inner tube, avoiding the situation that the washing water sprayed from the spray hole completely covers the front end of the inner tube, so that the user can clearly observe the interior through the glass observation window. Washing of laundry in the drum.

In a feasible embodiment of the present invention, the drum washing machine of the present invention includes a box body, an outer tube fixedly disposed in the box body, and a circulation pump, and the inner tube is pivotally disposed in the outer tube through a transmission shaft. . The water inlet of the circulation pump opens into the outer cylinder, and the water outlet of the circulation pump is in communication with the end of the passage far from the outer cylinder body. During operation, the circulation pump pumps the washing water in the outer cylinder to a plurality of spray holes through the channel, and the plurality of spray holes spray the washing water into the inner cylinder.

In scenario five:

In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing circulating spray device affects the user to observe the underwear of the drum washing machine through the glass observation window, the present invention provides an inner drum assembly of the drum washing machine. Cartridge components include:

A water inlet hole is arranged on the bottom end of the inner cylinder body;

A cap, which is disposed inside the inner cylinder body and is sealedly connected to the bottom end of the inner cylinder body;

A water cavity formed between the inner cylinder body and the cover and communicating with the water inlet hole;

A plurality of spray holes are disposed on the cover, one end of each spray hole is in communication with the water cavity, and the other end of each spray hole is directed to the inside of the inner cylinder body.

In a preferred technical solution of the inner cylinder assembly, a side of the cover facing the bottom end of the inner cylinder body is provided with a first groove constituting the water cavity; and / or a bottom end of the inner cylinder body The side facing the cover is provided with a second groove constituting the water cavity.

In a preferred technical solution of the inner cylinder assembly, the cover is a disc structure.

In a preferred technical solution of the inner cylinder assembly, the plurality of spray holes are provided on the cover at equal intervals around an axis of the inner cylinder body.

In a preferred technical solution of the inner cylinder assembly, the disc structure is provided with a plurality of convex ribs.

In a preferred technical solution of the inner cylinder assembly, the inner cylinder assembly further includes a transmission shaft for driving the inner cylinder body to rotate, and one end of the transmission shaft is inserted into the water inlet hole and is the same as the inner cylinder body. The shaft is fixedly connected; the drive shaft is provided with a channel along the axial direction, one end of the channel is in communication with the water cavity, and the other end of the channel is open to the outside.

In a preferred technical solution of the inner cylinder assembly, the inner cylinder assembly further includes a reinforcing member, and the reinforcing member is fixedly connected to the bottom end of the inner cylinder body or is integrally made.

In addition, the present invention also provides a drum washing machine, which comprises the inner drum assembly according to any one of the above-mentioned preferred technical solutions of the inner drum assembly, and the water supply device is configured to supply water to the water cavity.

In a preferred technical solution of the above-mentioned drum washing machine, the water supply device is a circulation pump, a water inlet of the circulation pump opens into the outer cylinder, and a water outlet of the circulation pump communicates with the water inlet.

In a preferred technical solution of the above-mentioned drum washing machine, the water supply device is a water inlet valve, a water inlet port of the water inlet valve is connected to a water source, and a water outlet port of the water inlet valve is in communication with the water inlet hole.

Those skilled in the art can understand that, in a preferred technical solution of the present invention, a cover is provided on the inner side of the inner cylinder body, and the inner cylinder body and the cover are sealedly connected together, thereby forming a water cavity. A water inlet hole communicating with the water cavity is provided at the bottom end of the inner cylinder body, and a plurality of spray holes communicating with the water cavity are provided on the cover, so that the water inlet hole can introduce external washing water into the water cavity. And then the washing water in the water cavity is sprayed into the inner cylinder body through the spray hole. Therefore, the present invention avoids the situation in which the washing water sprayed from the spray holes completely covers the front end of the inner tube body by setting a plurality of spray holes on the bottom of the inner tube body, so that the user can clearly observe the inner tube body through the glass observation window Washing of medium laundry.

BRIEF DESCRIPTION OF THE DRAWINGS

The following describes preferred embodiments of the present invention with reference to the accompanying drawings, in which:

1 is a schematic diagram of the internal structure of a drum washing machine of the present invention (scheme 1);

2 is an enlarged view of part A in FIG. 1 (scheme 1);

Figure 3 is a front view of the cover of the present invention (scheme one);

4 is a front view of the drum washing machine in the embodiment of the present invention (scheme two);

5 is a cross-sectional view taken along the A-A direction in FIG. 4 (Scheme 2);

6 is a cross-sectional view taken along the B-B direction in FIG. 5 (Scheme 2);

7 is a schematic structural diagram of a transmission shaft assembly in the embodiment of the present invention (scheme 2);

8 is an enlarged view of part C in FIG. 5 (scheme 2);

9 is a front view of the drum washing machine in the embodiment of the present invention (scheme three);

10 is a cross-sectional view taken along the A-A direction in FIG. 9 (Scheme 3);

11 is a cross-sectional view taken along the B-B direction in FIG. 10 (Scheme 3);

FIG. 12 is a schematic structural diagram of a transmission shaft assembly in the embodiment of the present invention (scheme three); FIG.

13 is an enlarged view of part C in FIG. 10 (scheme three);

FIG. 14 is a front view of the drum washing machine in the embodiment of the present invention (scheme four); FIG.

15 is a cross-sectional view taken along the A-A direction in FIG. 14 (Scheme 4);

16 is a cross-sectional view taken along the B-B direction in FIG. 15 (Scheme 4);

FIG. 17 is a schematic structural diagram of a transmission shaft in the embodiment of the present invention (scheme 4);

FIG. 18 is an enlarged view of part C in FIG. 15 (scheme four);

19 is a front view of the drum washing machine in the embodiment of the present invention (scenario 5);

20 is a cross-sectional view taken along the A-A direction in FIG. 19 (Scheme 5);

21 is a cross-sectional view taken along the B-B direction in FIG. 20 (Scheme 5);

22 is an enlarged view of part C in FIG. 20 (Scheme 5);

FIG. 23 is a schematic structural diagram of a transmission shaft assembly in the embodiment of the present invention (scheme 5); FIG.

FIG. 24 is an enlarged view of part D in FIG. 20 (Scheme 5).

In scheme one , the list of marks in Figures 1-3:

1. Box body; 2. Outer tube; 21; Outer tube body; 211. Water inlet connection; 22. Cap; 221; Spray hole; 23; Water cavity; 3. Inner tube; 31; Through hole; 4. Door Body; 41, glass viewing window; 5, sealed window pad; 6, connecting pipe; 7, drainage pump; 8, drainage pipe; 9, circulating pump; 10, circulating water pipe.

In scheme two , the list of marks in Figures 4-8:

1. Box body; 2. Outer tube; 3. Inner tube component; 31. Inner tube body; 311; Spray hole; 32; Cover; 33; Water cavity; 4. Transmission shaft component; 41; Transmission shaft; Passage; 4111, first pass; 4112, second pass; 42, connecting pieces; 421, through holes; 422, annular flange; 43, bolts; 5, drive motor; 6, door body; 61, glass viewing window; 7. Sealing window gasket; 8. Connecting pipe; 9. Drain pump; 10. Drain pipe; 11. Circulating pump; 12. Circulating water pipe; 13. Bearing; 14. Rotating sealing ring.

In scheme three , the list of marks in Figures 9-13:

In scheme four , the list of marks in Figures 14-18:

1. Box; 2. Outer cylinder; 3. Inner cylinder; 31. Spray hole; 4. Transmission shaft; 41. Channel; 411. First channel; 412. Second channel; 413. Third channel. Hole; 43, annular groove; 5, drive motor; 6, door body; 61, glass observation window; 7, sealed window pad; 8, connection pipe; 9, drainage pump; 10, drainage pipe; 11, circulation pump; 12. Circulating water pipe; 13. Mounting frame; 14. Sealing ring.

In scheme five , the list of marks in Figures 19-24:

1. Box body; 2. Outer tube; 3. Inner tube assembly; 31. Inner tube body; 32. Reinforcement; 33. Cap; 331; Spray hole; 34; Water cavity; 4. Transmission shaft assembly; 41. Drive shaft; 411, passage; 4111, first passage; 4112, second passage; 42, connecting piece; 421, through hole; 422, annular flange; 43, bolt; 5, drive motor; 6, door body; 61 7. Glass observation window; 7. Sealed window gasket; 8. Connection pipe; 9. Drain pump; 10. Drain pipe; 11. Circulating pump; 12. Circulating water pipe; 13. Bearing; 14. Rotating sealing ring.

detailed description

Those skilled in the art should understand that the embodiments in this section are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention. For example, although the components in the drawings are drawn according to a certain proportional relationship, this proportional relationship is not static, and those skilled in the art can adjust it according to needs in order to adapt to specific applications and adjusted technology. The solution will still fall into the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "installation", "connected", and "connected" should be understood in a broad sense unless otherwise specified and limited. For example, they may be fixed connections or removable. The connection, or the integral connection, can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In scenario one:

As shown in FIG. 1, the drum washing machine of the present invention mainly includes a box body 1, an outer tube 2, an inner tube 3, a door body 4, a sealed window pad 5, a connection pipe 6, a drain pump 7, and a drain pipe 8. Among them, the outer tube 2 is fixedly disposed in the box body 1, the inner tube 3 is rotatably disposed in the outer tube 2, and the sealing window pad 5 is disposed between the box body 1 and the outer tube 2. The connection pipe 6, the drainage pump 7 and the drainage pipe 8 are all arranged in the case 1. One end of the connecting pipe 6 is connected to the lower part of the outer cylinder 2 (the lower part of the outer cylinder 2 in FIG. 1), and the other end of the connecting pipe 6 is connected to the water inlet of the drain pump 7. Connected. The water outlet of the drainage pump 7 is connected to one end of the drainage pipe 8, and the other end of the drainage pipe 8 is open to the outside. The drain pump 7 can discharge the washing water in the outer tub 2 through the drain pipe 8.

In addition, those skilled in the art can understand that when each part of the drain pipe 8 is lower than the inner bottom end of the outer cylinder 2, those skilled in the art can also omit the drain pump 7 and replace the drain pump 7 as required. Replace with a globe valve. When the drum washing machine needs to drain water, the shut-off valve is opened, so that the washing water in the outer tub 2 is automatically discharged from the drain pipe 8 under the effect of its own gravity.

Continuing to refer to FIG. 1, the front end of the box 1 (the right side of the box 1 in FIG. 1) is provided with a box mouth (not shown), and the front end of the outer tube 2 (the right side of the outer tube 2 in FIG. 1) is provided with The outer cylinder mouth (not shown in the figure), the front end of the inner cylinder 3 (the right side of the inner cylinder 3 in FIG. 1) is provided with the inner cylinder mouth (not shown in the figure). One end of the sealing window pad 5 is sealingly connected to the edge of the box mouth, and the other end of the sealing window pad 5 is sealingly connected to the edge of the outer cylinder mouth. The door body 4 is pivotally disposed on the box body 1, and when the door body 4 is closed, the mouth of the box body can be closed to prevent the washing water in the outer cylinder 2 from overflowing from the box body mouth.

With continued reference to FIG. 1, the door 4 includes a glass viewing window 41. When the door of the box body 4 is closed, the user can observe the condition of the laundry in the inner tube 3 through the glass observation window 41.

As shown in FIGS. 1 and 2, the outer cylinder 2 of the present invention mainly includes an outer cylinder body 21, a cover 22 and a water cavity 23. Wherein, the cover 22 is provided at the bottom end of the outer cylinder body 21 (the left end of the outer cylinder 2 in FIG. 1), the cover 22 and the outer cylinder body 21 are sealedly connected, and thus the water cavity 23 is formed. Those skilled in the art can understand that the cover 22 may be disposed on a side of the bottom end of the outer tube body 21 facing the inner tube 3, or on a side of the bottom end of the outer tube body 21 remote from the inner tube 3. Those skilled in the art can also understand that the cover 22 and the outer cylinder body 21 can be sealed and connected together by any feasible connection method, for example, ultrasonic welding, cladding, and screw connection of the sealing strip. In addition, those skilled in the art can also make the cover 22 and the outer cylinder body 21 integrally as required.

With continued reference to FIGS. 1 and 2, a side of the outer cylinder body 21 facing the cover 22 is provided with a first groove (not shown). When the cover 22 and the outer cylinder body 21 are sealed and connected together, the first groove The groove forms a water cavity 23. It is not difficult to see from FIGS. 1 and 2 that the first groove is an annular groove, so the water cavity 23 is an annular water cavity. In a preferred embodiment of the present invention, the annular water cavity is disposed coaxially with the outer cylinder body 21. Correspondingly, the cover 22 also has a ring structure. In addition, those skilled in the art can set the first groove into any other feasible structure, such as a circular groove, a triangular groove, a claw groove, and the like, as required. Similarly, those skilled in the art can also set the cover 22 into any other feasible structure according to needs, such as a circle, a triangle, a claw, and the like.

In addition, those skilled in the art may also provide a second groove on the side of the cover 22 facing the outer cylinder body 21 according to need. When the cover 22 and the outer cylinder body 21 are hermetically connected together, the first groove and the second groove together form a water cavity 23. Alternatively, those skilled in the art may also not provide a first groove on the outer cylinder body 21 according to need, and only provide a second groove on the side of the cover 22 facing the outer cylinder body 21. When the cover 22 and the outer cylinder body 21 are hermetically connected together, the second groove constitutes the water cavity 23 alone.

With continued reference to FIG. 1 and FIG. 2, the outer cylinder body 21 is provided with a water inlet interface 211 communicating with the water cavity 23. The water inlet interface 211 is used to introduce washing water or tap water into the water cavity 23.

As shown in FIGS. 2 and 3, the cover 22 is provided with six spray holes 221 as a spray structure, and each of the spray holes 221 is in communication with the water cavity 23. Preferably, the six spray holes 221 are arranged at equal intervals around the axis of the cover 22. Or a person skilled in the art may also set the six spray holes 221 on the cover 22 in other arbitrary arrangements according to needs. For example, six spray holes 221 are provided on the cover 22 at non-equidistant intervals. Those skilled in the art can understand that the number of the spray holes 221 is not limited to six as shown in FIG. 3, and may be any number, such as five, seven, eight, and the like.

With continued reference to FIGS. 2 and 3, each spray hole 221 is obliquely provided on the cover 22, and the water outlet of each spray hole 221 is directed to the inner cylinder 3, so that the spray hole 221 can wash the water in the water cavity 23 Sprayed into the inner cylinder 3. Further, the spray holes 221 are flat so that the washing water sprayed from the spray holes 221 has a waterfall shape. In addition, those skilled in the art may also set the spray holes 221 in any other feasible form according to requirements, for example, set the spray holes 221 in a circular hole shape, an oval hole shape, a triangular hole shape, or the like.

As shown in FIG. 2, in order to ensure that the washing water sprayed from the spray hole 221 can smoothly enter the inner tube 3, the bottom end of the inner tube 3 (the left end of the inner tube 3 in FIG. 2) is also provided at a position corresponding to the spray hole 221. There are only six through holes 31. When the inner cylinder 3 is rotated to a position where the through hole 31 is aligned with the spray hole 221, the washing water sprayed from the spray hole 221 passes through the through hole 31 and enters the inner cylinder 3. Those skilled in the art can understand that the number of the through holes 31 is not limited to the above-mentioned six, and the number of the through holes 31 may be changed as the injection holes 221 change. Alternatively, a person skilled in the art may also set the number of the through holes 31 to an arbitrary value, for example, eight, nine, eleven, and the like. Further, those skilled in the art can also understand that the through hole 31 may be any feasible hole-like structure, such as a circular hole, a strip hole, an arc hole, a polygonal hole, and the like.

Continuing to refer to FIG. 1, the drum washing machine of the present invention further includes a spraying system. The spraying system mainly includes a circulating pump 9, a circulating water pipe 10, and a spraying device (not shown in the figure). Among them, the circulation pump 9 is preferably disposed in the casing 1 and fixedly connected to the casing 1. Or a person skilled in the art may also make the circulation pump 9 and the outer cylinder 1 fixedly connected as required. The water inlet of the circulation pump 9 is connected to the connection pipe 6 and thus opens to the inside of the outer cylinder 2. The water outlet of the circulating pump 9 is connected to one end of the circulating water pipe 10 and is in communication, and the other end of the circulating water pipe 10 is in communication with the spraying device. During operation, after the circulating pump 9 pumps the washing water in the outer tub 2 to the spraying device through the circulating water pipe 10, the spraying device sprays the washing water on the laundry in the inner tub 3.

As shown in FIG. 1 and FIG. 2, the shower device of the present invention includes the water cavity 23 described above, a water inlet interface 211 communicating with the water cavity 23, and a plurality of spray holes 221 communicating with the water cavity 23.

Further, in a preferred embodiment of the present invention, the water pressure provided by the circulation pump 9 can cause the washing water sprayed from the spray hole 221 to pass through the through hole 31 and partially fall on the glass observation window 41 and the sealing window pad 5. In order to clean the glass viewing window 41 and the sealing window pad 5, avoid the accumulation of detergent on the glass viewing window 41 and the sealing window pad 5, and affect the cleanliness of the glass viewing window 41 and the sealing window pad 5, and then influence the user to observe through the glass The window 41 observes the washing of the laundry in the inner tub 3.

Those skilled in the art can understand that the circulation pump 9 of the present invention can pump the washing water in the outer cylinder 2 to the water cavity 23 located at the bottom end of the outer cylinder 2, and then through a plurality of spray holes 221 communicating with the water cavity 23 The washing water is sprayed into the inner tub 3 from the bottom end of the inner tub 3. Therefore, compared with the conventional drum washing machine in which the spray holes / nozzles are arranged near the front end of the outer tube 2 in the prior art, the drum washing machine of the present invention prevents the water flow sprayed from the spray holes / nozzles from accumulating at the front end of the outer tube 2 and obstructs users from observing The sight of the clothes in the drum 3. At the same time, the spraying system of the present invention can also clean the glass observation window 41 and the sealing window pad 5 to ensure the cleanliness of the glass observation window 41 and the sealing window pad 5. At the same time, the rotating inner cylinder 3 of the present invention can also intermittently cut off the washing water sprayed from the spray holes 221, optimizing the spraying effect.

Although not shown in the drawings, the present invention also provides another feasible embodiment, which is different from the foregoing preferred embodiment of the present invention in that the spray structure is a nozzle. The nozzle is fixedly connected to the cover 22, and the water inlet of the nozzle is in communication with the water cavity 23, and the water outlet of the nozzle is directed to the inner cylinder 3. Further, those skilled in the art may also omit the water cavity 23 according to need, and make the circulating water pipe 10 directly communicate with the water inlet of each nozzle.

Although not shown in the figure, the present invention also provides another feasible embodiment. Those skilled in the art can set the water cavity 23 at any position on the rear of the outer cylinder 2 according to requirements. For example, the water cavity 23 is set outside. The side of the cylinder 2 is near the bottom end. Correspondingly, the through holes 31 in the inner cylinder 3 are also disposed on the side wall of the inner cylinder 3 near the bottom end.

Although not shown in the figure, the present invention also provides another feasible embodiment, which is different from the above-mentioned preferred embodiment of the present invention in that the spray structure is a nozzle and does not have the water cavity 23 described above. Each nozzle is fixedly disposed on the side wall of the outer cylinder 2 near the bottom end. The water inlet of each nozzle is directly connected and communicated with the circulating water pipe 10, and the water outlet of each nozzle is directed to the axis of the inner cylinder 3. Correspondingly, the through holes 31 in the inner cylinder 3 are also disposed on the side wall of the inner cylinder 3 near the bottom end.

It should be noted that in a case where the spray structure can realize the spraying of washing water from the rear and / or the middle of the inner cylinder 3 into the inner cylinder 3, the technical solution constituted by the above technical solution split and the technical solution The technical solutions constituted by the combination should fall within the protection scope of the present invention. The combination between the above technical solutions includes a combination of complete technical solutions, and also includes a combination of some technical features in one technical solution and some technical features in another technical solution.

In scenario two:

As shown in FIG. 4 and FIG. 5, the drum washing machine of the present invention mainly includes a box body 1, an outer tube 2, an inner tube assembly 3, a drive shaft assembly 4, a driving motor 5, a door body 6, a sealed window pad 7, and a connecting pipe 8. , Drainage pump 9 and drainage pipe 10. Among them, the outer cylinder 2 is fixedly disposed in the casing 1, the inner cylinder assembly 3 is rotatably disposed in the outer cylinder 2 through the transmission shaft assembly 4, the driving motor 5 is fixedly disposed outside the outer cylinder 2, and the driving motor 5 and the transmission The shaft assembly 4 is coaxially fixedly connected. The door body 6 is pivotally connected to the box body 1. The sealing window pad 7 is provided between the box body 1 and the outer cylinder 2. The connection pipe 8, the drainage pump 9 and the drainage pipe 10 are all arranged in the case 1. One end of the connecting pipe 8 is connected to the lower part of the outer cylinder 2 (the lower part of the outer cylinder 2 in FIG. 5), and the other end of the connecting pipe 8 is connected to the water inlet of the drain pump 9. Connected. The water outlet of the drainage pump 9 is connected to one end of the drainage pipe 10, and the other end of the drainage pipe 10 is open to the outside. The drain pump 9 can discharge the washing water in the outer tub 2 through the drain pipe 10.

In addition, those skilled in the art can understand that when each part of the drain pipe 10 is lower than the inner bottom end of the outer cylinder 2, those skilled in the art can also omit the drain pump 9 and replace the drain pump 9 as required. Replace with a globe valve. When the drum washing machine needs to drain water, the shut-off valve is opened, so that the washing water in the outer tub 2 is automatically discharged from the drain pipe 10 under the effect of its own gravity.

As shown in FIG. 5, the front end of the box 1 (the right side of the box 1 in FIG. 5) is provided with a box mouth (not shown), and the front end of the outer tube 2 (the right side of the outer tube 2 in FIG. 5) is provided. An outer cylinder opening (not shown in the figure) is provided, and an inner cylinder opening (not shown in the figure) is provided at the front end of the inner cylinder assembly 3 (the right side of the inner cylinder assembly 3 in FIG. 5). One end of the sealing window pad 7 is sealingly connected to the edge of the box mouth, and the other end of the sealing window pad 7 is sealingly connected to the edge of the outer cylinder mouth. The door body 6 is pivotally disposed on the box body 1. When the door body 6 is closed, the box body mouth can be closed to prevent the washing water in the outer cylinder 2 from overflowing from the box body mouth.

With continued reference to FIG. 5, the door body 6 includes a glass viewing window 61. When the door of the box body 6 is closed, the user can observe the condition of the laundry in the inner tube assembly 3 through the glass observation window 61.

As shown in FIGS. 5 and 6, the inner cylinder assembly 3 of the present invention mainly includes an inner cylinder body 31, a cover 32 and a water cavity 33. Wherein, the cover 32 is disposed at the bottom end of the inner cylinder body 31 (the left end of the inner cylinder body 31 in FIG. 5), and the seal 32 and the inner cylinder body 31 are hermetically connected, thereby forming the water cavity 33. Those skilled in the art can understand that the cover 32 may be provided on the inner side of the inner cylinder body 31 or on the outer side of the inner cylinder body 31. Those skilled in the art can also understand that the cover 32 and the inner cylinder body 31 can be sealed and connected together in any feasible connection manner, for example, ultrasonic welding, cladding, and screw fastening of the sealing strip. In addition, those skilled in the art can also make the cover 32 and the inner cylinder body 31 integrally as required.

With continued reference to FIG. 5 and FIG. 6, a side of the inner cylinder body 31 facing the cover 32 is provided with a first groove (not shown). When the cover 32 and the inner cylinder body 31 are sealed and connected together, the first groove The groove constitutes a water cavity 33. Although it is not clearly shown in the figure, it is not difficult to see from FIG. 6 that the first groove is a Y-shaped groove, so the water cavity 33 is a Y-shaped water cavity. In a preferred embodiment of the present invention, the Y-shaped water cavity is disposed coaxially with the inner cylinder body 31. Correspondingly, the cover 32 also has a Y-shaped structure. In addition, those skilled in the art can set the first groove into any other feasible structure according to requirements, such as a circular groove, a circular groove, a triangular groove, and the like. Similarly, those skilled in the art can also set the cover 32 into any other feasible structure, such as a ring, a circle, a triangle, and the like, as needed.

In addition, those skilled in the art may also provide a second groove on the side of the cover 32 facing the inner cylinder body 31 as required. When the cover 32 and the inner cylinder body 31 are hermetically connected together, the first groove and the second groove together form a water cavity 33. Alternatively, a person skilled in the art may also provide a second groove on the side of the cover 32 facing the inner cylinder body 31 instead of providing the first groove on the inner cylinder body 31 as required. When the cover 32 and the inner cylinder body 31 are hermetically connected together, the second groove constitutes the water cavity 33 alone.

With continued reference to FIG. 5, the cover 32 is provided with a water inlet hole (not shown in the figure) communicating with the water cavity 33. The water inlet hole is used to introduce washing water or tap water into the water cavity 33. In a preferred embodiment of the present invention, the water inlet is used to connect the transmission shaft 41. The transmission shaft 41 can be connected to the cover 32 together or made in one piece by any feasible method (such as welding, plugging, and screwing).

As shown in FIGS. 5 and 6, the inner cylinder body 31 is provided with nine spray holes 311, each of which is in communication with the water cavity 33. Preferably, the nine spray holes 311 are uniformly provided on the bottom end of the inner cylinder body 31 as shown in FIG. 6. Or a person skilled in the art may also set the nine injection holes 311 on the inner cylinder body 31 in other arbitrary arrangements according to needs. For example, the nine injection holes 311 are compactly provided near the axis of the inner cylinder body 31. Those skilled in the art can understand that the number of the injection holes 311 is not limited to the nine shown in FIG. 6, and may be any number, such as five, seven, eight, and the like.

With continued reference to FIGS. 5 and 6, each of the spray holes 311 has an included angle with the axis of the inner cylinder body 31, so that the spray holes 311 can spray the washing water in the water cavity 33 into the inner cylinder body 31 uniformly. Further, the spray holes 311 are flat, so that the washing water sprayed from the spray holes 311 has a waterfall shape. In addition, those skilled in the art can also set the spray holes 311 into any other feasible form according to requirements, for example, set the spray holes 311 in a circular hole shape, an oval hole shape, a triangular hole shape, or the like.

As shown in FIG. 7, the transmission shaft assembly of the present invention mainly includes a transmission shaft 41, a connecting member 42, and a bolt 43. The transmission shaft 41 is provided with a passage 411 penetrating the axial direction of the transmission shaft 41, and the passage 411 includes a first passage 4111 and a second passage 4112 which are communicated with each other. Wherein, the first passage 4111 is disposed away from the shaft center of the transmission shaft 41. A journal is provided at one end of the transmission shaft 41 near the first channel 4111, and the diameter of the journal is smaller than the diameter of other parts of the transmission shaft 41. The journal is also coaxially provided with a screw hole (not shown in the figure). The connecting member 42 is provided with a through hole 421, an annular flange 422, and a mounting hole (not shown in the figure).

As shown in FIG. 5, in the installed state, the left end of the transmission shaft 41 passes through the rotor of the drive motor 5 and abuts against the right end of the connecting member 42, and the bolt 43 passes through the mounting hole on the connecting member 42 and contacts the transmission shaft 41. The upper threaded holes are screwed together, and thus the transmission shaft 41, the connecting member 42 and the rotor of the drive motor 5 are tightly fixed together. In this state, the annular flange 422 and the transmission shaft 41 are coaxial.

Continuing to refer to FIG. 5, in the installed state, the right end of the transmission shaft 41 is inserted into the water inlet hole on the cover 32, and is fixedly connected with the cover 32 or made integrally, so that the channel 411 and the water cavity 33 communicate with each other. . Those skilled in the art can understand that the transmission shaft 41 and the cover 32 may be connected together in any feasible manner, for example, screw connection, welding, plugging, and the like.

Continuing to refer to FIG. 5, as an alternative to the above technical solution of allowing the passage 411 to penetrate the drive shaft 41 along the axis of the drive shaft 41, those skilled in the art may also make the passage 411 not penetrate the right end of the drive shaft 41 as needed. The middle passage 411 is provided as a blind hole opened at the left end of the transmission shaft 41. A radial hole structure is provided at a portion of the transmission shaft 41 protruding into the water cavity 33 so that the hole structure communicates with the channel 411 and the water cavity 33 respectively.

Those skilled in the art can understand that the positions of the first channel 4111 and the threaded hole on the transmission shaft 41 are not limited to the above one case. Those skilled in the art can also adjust the positions of the first channel 4111 and the threaded holes as needed. For example, the first channel 4111 is coaxially provided on the transmission shaft 41, and the threaded hole is disposed away from the shaft center of the transmission shaft 41.

In addition, those skilled in the art can also make the transmission shaft 41 and the connecting member 42 connected by any other feasible connection methods, such as screw connection, snap connection, interference fit connection, etc., as required.

With continued reference to FIG. 5, the drum washing machine of the present invention further includes a circulation pump 11 and a circulation water pipe 12. Among them, the circulation pump 11 is preferably disposed in the casing 1 and fixedly connected to the casing 1. Alternatively, those skilled in the art can also make the circulation pump 11 and the outer cylinder 1 fixedly connected as required. The water inlet of the circulation pump 11 is connected to the connection pipe 8 and thus opens to the inside of the outer cylinder 2. The water outlet of the circulating pump 11 is connected to one end of the circulating water pipe 12 and is in communication, and the other end of the circulating water pipe 12 is in communication with the passage 411. During operation, the circulating pump 11 pumps the washing water in the outer cylinder 2 to the channel 411 through the circulating water pipe 12, the channel 411 sends the washing water to the water cavity 33, and a plurality of spray holes 311 spray the washing water to the inner cylinder body 31. Clothing.

As shown in FIGS. 5 and 8, the water outlet end of the circulating water pipe 12 is inserted into the annular flange 422 of the connecting member 42. Further, a bearing 13 and a rotary seal ring 14 are provided between the circulating water pipe 12 and the connecting member 42. The bearing 13 is used to support the circulating water pipe 12 so that the transmission shaft 41 can rotate freely relative to the circulating water pipe 12. The rotary seal ring 14 is used to seal the circulating water pipe 12 and the connecting member 42 and prevent washing water from leaking out from the gap between the circulating water pipe 12 and the connecting member 42.

Further, in a preferred embodiment of the present invention, the water pressure provided by the circulation pump 11 can cause part of the washing water sprayed from the spray holes 311 to fall on the glass observation window 61 and the sealing window pad 7. In order to clean the glass viewing window 61 and the sealing window pad 7, avoid the accumulation of detergent on the glass viewing window 61 and the sealing window pad 7, and affect the cleanliness of the glass viewing window 61 and the sealing window pad 7, and then affect the user's observation through the glass The window 61 observes the washing condition of the laundry in the inner tube assembly 3.

Those skilled in the art can understand that the circulation pump 11 of the present invention can pump the washing water in the outer cylinder 2 into the water cavity 33 located at the bottom end of the inner cylinder body 31, and then through a plurality of spray holes communicating with the water cavity 33 311 sprays washing water into the inner cylinder body 31. Therefore, compared with the conventional drum washing machine in which the spray holes / nozzles are arranged near the front end of the outer tube 2 in the prior art, the drum washing machine of the present invention prevents the water flow sprayed from the spray holes / nozzles from accumulating at the front end of the outer tube 2 and obstructs the user from observing the inside. The condition of the line of sight of the laundry in the tube assembly 3. Further, the washing water sprayed from the plurality of spray holes 311 of the present invention can also clean the glass observation window 61 and the sealing window pad 7 to ensure the cleanliness of the glass observation window 61 and the sealing window pad 7. Furthermore, the washing water sprayed from each of the spray holes 311 will rotate with the rotation of the inner cylinder body 31 to form a circular spray water flow, which optimizes the spray effect.

Although not shown in the drawings, the present invention also provides another feasible embodiment. Those skilled in the art can set the cover 32 inside the inner cylinder body 31 and set a plurality of spray holes 311 as required. The cover 32 is provided with a water inlet hole at the bottom end of the inner cylinder body 31. The transmission shaft 41 is directly fixedly connected to the inner cylinder body 31. In order to improve the connection strength between the transmission shaft 41 and the inner cylinder body 31, the transmission shaft assembly 4 further includes a mounting bracket, one end of which is fixedly connected to the transmission shaft 41, and the other end of the transmission shaft 41 is fixed to the inner cylinder body 31. connection. Wherein, the mounting frame is preferably Y-shaped or triangular.

Although it is not shown in the figure, the present invention also provides another embodiment of the transmission shaft assembly 4. Those skilled in the art can make the transmission shaft assembly 4 only include the transmission shaft 41 according to requirements, and one end of the transmission shaft 41 and The cover 32 is coaxially fixedly connected, so that the other end of the transmission shaft 41 is coaxially fixedly connected with the rotor of the driving motor 5. Further, the first channel 4111 is coaxially disposed with the transmission shaft 41, and the diameter of the first channel 4111 is made sufficiently large. Further, the water outlet end of the circulating water pipe 12 is directly inserted into the first channel 4111, and the two are connected to each other in a rotationally sealed manner.

Although it is not shown in the figure, the present invention also provides another embodiment of a drum washing machine. Those skilled in the art may omit the circulation pump 11 according to needs, so that the water inlet end of the circulating water pipe 12 and the water outlet of the water inlet valve The valve ports are connected. When the water inlet of the water inlet valve is connected to an external water source, the water inlet valve can provide tap water to the water cavity 33 through the circulating water pipe 12, and then the plurality of spray holes 311 spray the tap water into the inner cylinder body 31.

Although not shown in the drawings, the present invention also provides another embodiment of the inner cylinder assembly. Those skilled in the art may omit the water cavity 33 and make the transmission shaft 41 near one end of the inner cylinder body 31 and the inner cylinder according to the needs. The tube body 31 is in abutting contact with each other. The second channel 4112 has a projection area on the inner cylinder body 31 along the axis direction, and a plurality of spray holes 311 are provided in the projection area of the inner cylinder body 31.

It should be noted that in a case where the spray structure can realize washing water sprayed from the rear part and / or the middle part of the inner cylinder assembly 3 into the inner cylinder assembly 3, the technical solution constituted by the above technical solution split and the above technology The technical schemes formed by the combination of the schemes should all fall into the protection scope of the present invention. The combination between the above technical solutions includes a combination of complete technical solutions, and also includes a combination of some technical features in one technical solution and some technical features in another technical solution.

In scenario three:

As shown in FIG. 9 and FIG. 10, the drum washing machine of the present invention mainly includes a cabinet 1, an outer cylinder 2, an inner cylinder assembly 3, a drive shaft assembly 4, a driving motor 5, a door 6, a sealing window pad 7, and a connecting pipe 8. , Drainage pump 9 and drainage pipe 10. Among them, the outer cylinder 2 is fixedly disposed in the casing 1, the inner cylinder assembly 3 is rotatably disposed in the outer cylinder 2 through the transmission shaft assembly 4, the driving motor 5 is fixedly disposed outside the outer cylinder 2, and the driving motor 5 and the transmission The shaft assembly 4 is coaxially fixedly connected. The door body 6 is pivotally connected to the box body 1. The sealing window pad 7 is provided between the box body 1 and the outer cylinder 2. The connection pipe 8, the drainage pump 9 and the drainage pipe 10 are all arranged in the case 1. One end of the connecting pipe 8 is connected to the lower part of the outer cylinder 2 (the lower part of the outer cylinder 2 in FIG. 10), and the other end of the connecting pipe 8 is connected to the water inlet of the drainage pump 9, and the water inlet of the drainage pump 9 is thus connected to the outer cylinder 2. Connected. The water outlet of the drainage pump 9 is connected to one end of the drainage pipe 10, and the other end of the drainage pipe 10 is open to the outside. The drain pump 9 can discharge the washing water in the outer tub 2 through the drain pipe 10.

It should be noted that, in practice, the inner cylinder assembly 3 of the present invention is collectively referred to as the inner cylinder. In order to facilitate the description of the inner cylinder in the embodiments of the present invention, the conventional inner cylinder is named the inner cylinder assembly 3.

As shown in FIG. 10, the front end of the box 1 (the right side of the box 1 in FIG. 10) is provided with a box mouth (not shown), and the front end of the outer tube 2 (the right side of the outer tube 2 in FIG. 10) is provided. An outer cylinder opening (not shown in the figure) is provided, and an inner cylinder opening (not shown in the figure) is provided at the front end of the inner cylinder assembly 3 (the right side of the inner cylinder assembly 3 in FIG. 10). One end of the sealing window pad 7 is sealingly connected to the edge of the box mouth, and the other end of the sealing window pad 7 is sealingly connected to the edge of the outer cylinder mouth. The door body 6 is pivotally disposed on the box body 1. When the door body 6 is closed, the box body mouth can be closed to prevent the washing water in the outer cylinder 2 from overflowing from the box body mouth.

With continued reference to FIG. 10, the door body 6 includes a glass viewing window 61. When the door of the box body 6 is closed, the user can observe the condition of the laundry in the inner tube assembly 3 through the glass observation window 61.

As shown in FIGS. 10 and 11, the inner cylinder assembly 3 of the present invention mainly includes an inner cylinder body 31, a cover 32 and a water cavity 33. Wherein, the cover 32 is provided at the bottom end of the inner cylinder body 31 (the left end of the inner cylinder body 31 in FIG. 10), and the seal 32 and the inner cylinder body 31 are hermetically connected, thereby forming the water cavity 33. Those skilled in the art can understand that the cover 32 may be provided on the inner side of the inner cylinder body 31 or on the outer side of the inner cylinder body 31. Those skilled in the art can also understand that the cover 32 and the inner cylinder body 31 can be sealed and connected together in any feasible connection manner, for example, ultrasonic welding, cladding, and screw fastening of the sealing strip. In addition, those skilled in the art can also make the cover 32 and the inner cylinder body 31 integrally as required.

With continued reference to FIGS. 10 and 11, a side of the inner cylinder body 31 facing the cover 32 is provided with a first groove (not shown in the figure). When the cover 32 and the inner cylinder body 31 are tightly connected together, the first groove The groove constitutes a water cavity 33. Although it is not clearly shown in the figure, it is not difficult to see from FIG. 11 that the first groove is a Y-shaped groove, so the water cavity 33 is a Y-shaped water cavity. In a preferred embodiment of the present invention, the Y-shaped water cavity is arranged coaxially with the inner cylinder body 31. Correspondingly, the cover 32 also has a Y-shaped structure. In addition, those skilled in the art can set the first groove into any other feasible structure according to requirements, such as a circular groove, a circular groove, a triangular groove, and the like. Similarly, those skilled in the art can also set the cover 32 into any other feasible structure, such as a ring, a circle, a triangle, and the like, as needed.

Continuing to refer to FIG. 10, the cover 32 is provided with a water inlet hole (not shown in the figure) communicating with the water cavity 33, and the water inlet hole is used to introduce washing water or tap water into the water cavity 33. In a preferred embodiment of the present invention, the water inlet is used to connect the transmission shaft 41. The transmission shaft 41 can be connected to the cover 32 together or made in one piece by any feasible method (such as welding, plugging, and screwing).

As shown in FIGS. 10 and 11, the inner cylinder body 31 is provided with nine spray holes 311, each of which is in communication with the water cavity 33. Preferably, the nine spray holes 311 are uniformly provided on the bottom end of the inner cylinder body 31 as shown in FIG. 11. Or a person skilled in the art may also set the nine injection holes 311 on the inner cylinder body 31 in other arbitrary arrangements according to needs. For example, the nine injection holes 311 are compactly provided near the axis of the inner cylinder body 31. Those skilled in the art can understand that the number of the injection holes 311 is not limited to the nine shown in FIG. 11, and may be any number, such as five, seven, eight, and the like.

With continued reference to FIGS. 10 and 11, each spray hole 311 has an included angle with the axis of the inner cylinder body 31, so that the spray holes 311 can spray the washing water in the water cavity 33 into the inner cylinder body 31 uniformly. Further, the spray holes 311 are flat, so that the washing water sprayed from the spray holes 311 has a waterfall shape. In addition, those skilled in the art can also set the spray holes 311 into any other feasible form according to requirements, for example, set the spray holes 311 in a circular hole shape, an oval hole shape, a triangular hole shape, or the like.

As shown in FIG. 12, the transmission shaft assembly of the present invention mainly includes a transmission shaft 41, a connecting member 42, and a bolt 43. The transmission shaft 41 is provided with a passage 411 penetrating the axial direction of the transmission shaft 41, and the passage 411 includes a first passage 4111 and a second passage 4112 that communicate with each other. Wherein, the first passage 4111 is disposed away from the shaft center of the transmission shaft 41. A journal is provided at one end of the transmission shaft 41 near the first channel 4111, and the diameter of the journal is smaller than the diameter of other parts of the transmission shaft 41. The journal is also coaxially provided with a screw hole (not shown in the figure). The connecting member 42 is provided with a through hole 421, an annular flange 422, and a mounting hole (not shown in the figure).

As shown in FIG. 10, in the installed state, the left end of the transmission shaft 41 passes through the rotor of the driving motor 5 and abuts against the right end of the connecting member 42, and the bolt 43 passes through the mounting hole on the connecting member 42 and then contacts the transmission shaft 41. The upper threaded holes are screwed together, and thus the transmission shaft 41, the connecting member 42 and the rotor of the drive motor 5 are tightly fixed together. In this state, the annular flange 422 and the transmission shaft 41 are coaxial.

Continuing to refer to FIG. 10, in the installed state, the right end of the transmission shaft 41 passes through the water inlet hole on the cover 32, and is fixedly connected to or integrated with the cover 32 so that the channel 411 and the water cavity 33 Connected. Those skilled in the art can understand that the transmission shaft 41 and the cover 32 may be connected together in any feasible manner, for example, screw connection, welding, plugging, and the like.

Continuing to refer to FIG. 10, as an alternative to the above technical solution of allowing the passage 411 to penetrate the drive shaft 41 along the axis of the drive shaft 41, those skilled in the art may also make the passage 411 not penetrate the right end of the drive shaft 41 as needed. The middle passage 411 is provided as a blind hole opened at the left end of the transmission shaft 41. A radial hole structure is provided at a portion of the transmission shaft 41 protruding into the water cavity 33 so that the hole structure communicates with the channel 411 and the water cavity 33 respectively.

Continuing to refer to FIG. 10, the drum washing machine of the present invention further includes a spraying system. The spraying system mainly includes a circulating pump 11, a circulating water pipe 12, a connection shaft assembly 4, a water cavity 33, and a plurality of spray holes 311. Among them, the circulation pump 11 is preferably disposed in the casing 1 and fixedly connected to the casing 1. Alternatively, those skilled in the art can also make the circulation pump 11 and the outer cylinder 1 fixedly connected as required. The water inlet of the circulation pump 11 is connected to the connection pipe 8 and thus opens to the inside of the outer cylinder 2. The water outlet of the circulating pump 11 is connected to one end of the circulating water pipe 12 and is in communication, and the other end of the circulating water pipe 12 is in communication with the passage 411. During operation, the circulating pump 11 pumps the washing water in the outer cylinder 2 to the channel 411 through the circulating water pipe 12, the channel 411 sends the washing water to the water cavity 33, and a plurality of spray holes 311 spray the washing water to the inner cylinder body 31. Clothing.

As shown in FIGS. 10 and 13, the water outlet end of the circulating water pipe 12 is inserted into the annular flange 422 of the connecting member 42. Further, a bearing 13 and a rotary seal ring 14 are provided between the circulating water pipe 12 and the connecting member 42. The bearing 13 is used to support the circulating water pipe 12 so that the transmission shaft 41 can rotate freely relative to the circulating water pipe 12. The rotary seal ring 14 is used to seal the circulating water pipe 12 and the connecting member 42 and prevent washing water from leaking out from the gap between the circulating water pipe 12 and the connecting member 42.

Those skilled in the art can understand that the circulation pump 11 of the present invention can pump the washing water in the outer cylinder 2 into the water cavity 33 located at the bottom end of the inner cylinder body 31, and then through a plurality of spray holes communicating with the water cavity 33 311 sprays washing water into the inner cylinder body 31. Therefore, compared with the conventional drum washing machine in which the spray holes / nozzles are arranged near the front end of the outer tube 2 in the prior art, the drum washing machine of the present invention prevents the water flow sprayed from the spray holes / nozzles from accumulating at the front end of the outer tube 2 and obstructs users from observing The condition of the line of sight of the laundry in the tube assembly 3. Further, the spray system of the present invention can also clean the glass observation window 61 and the sealing window pad 7 to ensure the cleanliness of the glass observation window 61 and the sealing window pad 7. Furthermore, the washing water sprayed from each of the spray holes 311 will rotate with the rotation of the inner cylinder body 31 to form a circular spray water flow, which optimizes the spray effect.

Although it is not shown in the figure, the present invention also provides another embodiment of a spraying system. Those skilled in the art may omit the circulation pump 11 according to needs, so that the inlet end of the circulating water pipe 12 and the inlet valve The outlet valve is connected. When the water inlet of the water inlet valve is connected to an external water source, the water inlet valve can provide tap water to the water cavity 33 through the circulating water pipe 12, and then the plurality of spray holes 311 spray the tap water into the inner cylinder body 31.

Although not shown in the drawings, the present invention also provides another embodiment of a spraying system. Those skilled in the art may omit the water cavity 33 and make the transmission shaft 41 close to one end and the inner side of the inner cylinder body 31 according to needs. The tube body 31 is in abutting contact with each other. The second channel 4112 has a projection area on the inner cylinder body 31 along the axis direction, and a plurality of spray holes 311 are provided in the projection area of the inner cylinder body 31.

In scenario four:

As shown in FIG. 14 and FIG. 15, the drum washing machine of the present invention mainly includes a box body 1, an outer tube 2, an inner tube assembly (not shown in the figure), a driving motor 5, a door body 6, a sealed window pad 7, and a connecting pipe 8. , Drainage pump 9 and drainage pipe 10. Among them, the outer cylinder 2 is fixedly disposed in the box body 1, and the inner cylinder assembly includes an inner cylinder 3 and a transmission shaft 4 connected together or made integrally. The inner cylinder 3 is rotatably disposed in the outer cylinder 2 through a transmission shaft 4, the driving motor 5 is fixedly disposed outside the outer cylinder 2, and the driving motor 5 is coaxially fixedly connected with the transmission shaft 4. The door body 6 is pivotally connected to the box body 1. The sealing window pad 7 is provided between the box body 1 and the outer cylinder 2. The connection pipe 8, the drainage pump 9 and the drainage pipe 10 are all arranged in the case 1. One end of the connecting pipe 8 is connected to the lower part of the outer tube 2 (the lower part of the outer tube 2 in FIG. 15), and the other end of the connecting pipe 8 is connected to the water inlet of the drain pump 9. Therefore, the water inlet of the drain pump 9 is connected to the outer tube 2. Connected. The water outlet of the drainage pump 9 is connected to one end of the drainage pipe 10, and the other end of the drainage pipe 10 is open to the outside. The drain pump 9 can discharge the washing water in the outer tub 2 through the drain pipe 10.

As shown in FIG. 15, the front end of the box 1 (the right side of the box 1 in FIG. 15) is provided with a box mouth (not shown), and the front end of the outer tube 2 (the right side of the outer tube 2 in FIG. 15) is provided. There is an outer cylinder port (not shown in the figure), and the front end of the inner cylinder 3 (the right side of the inner pipe 3 in FIG. 15) is provided with an inner cylinder port (not shown in the figure). One end of the sealing window pad 7 is sealingly connected to the edge of the box mouth, and the other end of the sealing window pad 7 is sealingly connected to the edge of the outer cylinder mouth. The door body 6 is pivotally disposed on the box body 1. When the door body 6 is closed, the box body mouth can be closed to prevent the washing water in the outer cylinder 2 from overflowing from the box body mouth.

With continued reference to FIG. 15, the door body 6 includes a glass viewing window 61. When the door of the cabinet 6 is closed by the door, the user can observe the condition of the laundry in the inner tube 3 through the glass observation window 61.

As described above, the inner cylinder assembly of the present invention mainly includes an inner cylinder 3 and a transmission shaft 4. The bottom end of the inner cylinder 3 is fixedly connected to one end of the transmission shaft 4.

As shown in FIGS. 15 and 16, the bottom end of the inner cylinder 3 is provided with five injection holes 31 aligned with the transmission shaft 4 near the shaft center. One of the injection holes 31 is disposed on the axis of the inner cylinder 3 and points to the inner cylinder mouth; the remaining four injection holes 31 are symmetrically disposed about the axis of the inner cylinder 3 and point to the side walls of the inner cylinder 3 respectively. In a preferred technical solution of the present invention, each of the spray holes 31 is flat, so that the washing water sprayed from the spray holes 31 has a waterfall shape. In addition, those skilled in the art may also set the spray holes 31 in any other feasible form according to requirements, for example, set the spray holes 31 in a circular hole shape, an oval hole shape, a triangular hole shape, or the like. In addition, those skilled in the art can also appropriately adjust the number of injection holes 31, for example, adjust the number of injection holes 31 to three, six, seven, nine, or the like.

As shown in FIG. 17, the transmission shaft 4 includes a front portion and a rear portion. Among them, the front portion and the rear portion are separated by a dotted line in FIG. 17, a portion on the left side of the dotted line is the front portion, and a portion on the right side of the dotted line is the rear portion. Further, a passage 41 penetrating the axis direction is provided in the transmission shaft 4, and the passage 41 includes a first passage 411, a second passage 412, and a third passage 413 which are sequentially communicated. The third channel 413 is located at the rear of the transmission shaft 4, and the diameter of the third channel 413 is larger than the diameters of the first channel 411 and the second channel 412. The first passage 411 is disposed offset from the axis of the transmission shaft 41. Furthermore, the left end of the transmission shaft 41 is provided with a screw hole 42 through which the transmission shaft 4 is coaxially fixed with the rotor of the drive motor 5. The right end of the transmission shaft 41 is provided with an annular groove 43 for receiving the seal ring 14. In addition, those skilled in the art can also appropriately adjust the positions of the first channel 411 and the threaded hole 42 according to needs, for example, the first channel 411 is coaxially disposed with the transmission shaft 4, and the threaded hole 42 is deviated from the transmission shaft 4. Axis setting.

As shown in FIG. 18, the inner cylinder assembly of the present invention further includes a mounting frame 13. The mounting frame 13 includes an inner connection portion (not shown in the figure) and an outer connection portion (not shown in the figure). The mounting frame 13 is fixedly connected to the front portion of the transmission shaft 4 through an internal connection portion. Those skilled in the art can understand that the mounting frame 13 and the transmission shaft 4 may be connected together in any feasible connection manner, such as a welding machine, a screw connection, an interference connection, and the like. Alternatively, those skilled in the art can also make the mounting frame 13 and the transmission shaft 4 integrally according to needs. The mounting frame 13 is fixedly connected to the inner cylinder 3 through an outer connecting portion. Those skilled in the art can understand that the mounting frame 13 and the inner cylinder 3 can be connected together by any feasible connection method, such as a welding machine, a snap connection, a bolt connection, and the like. Alternatively, those skilled in the art can also make the mounting bracket 13 and the inner cylinder 3 as a whole according to needs.

Those skilled in the art can understand that the mounting frame 13 may be any feasible structure, such as a Y-shaped structure, a triangular structure, a disc structure, and the like.

As shown in Fig. 15 and Fig. 18, in the installed state, the left end of the transmission shaft 4 passes through the rotor of the drive motor 5 and abuts with the right end of the connection member (not shown), and the bolt passes through the installation on the connection member. The holes are then screwed together with the threaded holes 42 on the drive shaft 4 and thus the drive shaft 4 and the rotor of the drive motor 5 are tightly fixed together. Among them, the diameter of the connecting member is larger than the diameter of the inner hole of the rotor of the driving motor 5 to prevent the transmission shaft 4 from escaping from the rotor of the driving motor 5.

Continue to refer to FIG. 15 and FIG. 18. In the installed state, the transmission shaft 4 is fixed together by the mounting bracket 13 and the inner cylinder 3. The fixed transmission shaft 4 and the inner cylinder 3 press the seal ring 14 to realize the transmission shaft. Sealed connection between 4 and inner cylinder 3. The injection holes 31 on the inner cylinder 3 are all surrounded by the seal ring 14 to ensure that each injection hole 31 can communicate with the third channel 413.

Those skilled in the art can understand that the reason why the diameter of the third channel 413 is larger than the diameters of the first channel 411 and the second channel 412 is that, firstly, the third channel 413 is aligned with the bottom of the inner tube 3 in the axial direction. The projected area on the end is as large as possible so that more injection holes 31 are provided on the inner cylinder 3; secondly, when the diameter of the channel 41 is made sufficiently large, the bearing capacity of the transmission shaft 4 is reduced, in other words, By connecting the mounting frame 13 with the front portion of the transmission shaft 4 having the second channel 412, the bearing strength of the transmission shaft 4 is ensured.

With continued reference to FIG. 15, the drum washing machine of the present invention further includes a circulating pump 11 and a circulating water pipe 12. Among them, the circulation pump 11 is preferably disposed in the casing 1 and fixedly connected to the casing 1. Alternatively, those skilled in the art can also make the circulation pump 11 and the outer cylinder 1 fixedly connected as required. The water inlet of the circulation pump 11 is connected to the connection pipe 8 and thus opens to the inside of the outer cylinder 2. The water outlet of the circulating pump 11 is connected to one end of the circulating water pipe 12 and communicates, and the other end of the circulating water pipe 12 is communicating with the channel 41. During operation, the circulating pump 11 pumps the washing water in the outer tub 2 to the channel 41 through the circulating water pipe 12, and the plurality of spray holes 31 spray the washing water on the laundry in the inner tub 3.

As shown in FIG. 15 and FIG. 18, the water outlet end of the circulating water pipe 12 is sealedly connected to the connecting member, and the connecting member can rotate freely relative to the water outlet end of the circulating water pipe 12.

Further, in a preferred embodiment of the present invention, the water pressure provided by the circulation pump 11 can cause part of the washing water sprayed from the spray holes 31 to fall on the glass observation window 61 and the sealing window pad 7. In order to clean the glass viewing window 61 and the sealing window pad 7, avoid the accumulation of detergent on the glass viewing window 61 and the sealing window pad 7, and affect the cleanliness of the glass viewing window 61 and the sealing window pad 7, and then affect the user's observation through the glass The window 61 observes the washing of the laundry in the inner tub 3.

Those skilled in the art can understand that the circulation pump 11 of the present invention can pump the washing water in the outer cylinder 2 into the channel 41, and then spray the washing water into the inner cylinder through a plurality of spray holes 31 communicating with the channel 41. 3 in. Therefore, compared with the conventional drum washing machine in which the spray holes / nozzles are arranged near the front end of the outer tube 2 in the prior art, the drum washing machine of the present invention prevents the water flow sprayed from the spray holes / nozzles from accumulating at the front end of the outer tube 2 and obstructs users from observing the inside The sight of the clothes in the drum 3. Further, the washing water sprayed from the plurality of spray holes 31 of the present invention can also clean the glass observation window 61 and the sealing window pad 7 to ensure the cleanliness of the glass observation window 61 and the sealing window pad 7. Furthermore, the washing water sprayed from each spray hole 31 will rotate with the rotation of the inner cylinder 3 to form a circular spray water flow, which optimizes the spray effect.

Although it is not shown in the figure, the present invention also provides another embodiment of the inner cylinder assembly. Unlike the above-mentioned preferred embodiment, the inner cylinder assembly does not have a mounting frame 13, and the transmission shaft 4 is directly fixed to the inner cylinder 3. Connected or made in one piece. However, in the case where the transmission shaft 4 and the inner cylinder 3 are integrally formed, the seal ring 14 is also omitted. Alternatively, those skilled in the art can also pass the transmission shaft 4 through the inner cylinder 3 as required, so that the transmission shaft 4 directly sprays washing water into the inner cylinder 3.

Although it is not shown in the figure, the present invention also provides another embodiment of a drum washing machine. Those skilled in the art may omit the circulation pump 11 according to needs, so that the water inlet end of the circulating water pipe 12 and the water outlet of the water inlet valve The valve ports are connected. When the water inlet of the water inlet valve is connected to an external water source, the water inlet valve can provide the tap water to the channel 41 through the circulating water pipe 12, so that the plurality of spray holes 31 spray the tap water into the inner cylinder 3.

In scenario five:

As shown in FIG. 19 and FIG. 20, the drum washing machine of the present invention mainly includes a cabinet 1, an outer cylinder 2, an inner cylinder assembly 3, a drive shaft assembly 4, a driving motor 5, a door 6, a sealing window pad 7, and a connecting pipe 8. , Drainage pump 9 and drainage pipe 10. Among them, the outer cylinder 2 is fixedly disposed in the casing 1, the inner cylinder assembly 3 is rotatably disposed in the outer cylinder 2 through the transmission shaft assembly 4, the driving motor 5 is fixedly disposed outside the outer cylinder 2, and the driving motor 5 and the transmission The shaft assembly 4 is coaxially fixedly connected. The door body 6 is pivotally connected to the box body 1. The sealing window pad 7 is provided between the box body 1 and the outer cylinder 2. The connection pipe 8, the drainage pump 9 and the drainage pipe 10 are all arranged in the case 1. One end of the connecting pipe 8 is connected to the lower part of the outer cylinder 2 (the lower part of the outer cylinder 2 in FIG. 20), and the other end of the connecting pipe 8 is connected to the water inlet of the drainage pump 9, and the water inlet of the drainage pump 9 is thus connected to the outer cylinder 2. Connected. The water outlet of the drainage pump 9 is connected to one end of the drainage pipe 10, and the other end of the drainage pipe 10 is open to the outside. The drain pump 9 can discharge the washing water in the outer tub 2 through the drain pipe 10.

As shown in FIG. 20, the front end of the box 1 (the right side of the box 1 in FIG. 20) is provided with a box mouth (not shown), and the front end of the outer tube 2 (the right side of the outer tube 2 in FIG. 20) is provided. An outer cylinder opening (not shown in the figure) is provided, and an inner cylinder opening (not shown in the figure) is provided at the front end of the inner cylinder assembly 3 (the right side of the inner cylinder assembly 3 in FIG. 20). One end of the sealing window pad 7 is sealingly connected to the edge of the box mouth, and the other end of the sealing window pad 7 is sealingly connected to the edge of the outer cylinder mouth. The door body 6 is pivotally disposed on the box body 1. When the door body 6 is closed, the box body mouth can be closed to prevent the washing water in the outer cylinder 2 from overflowing from the box body mouth.

With continued reference to FIG. 20, the door body 6 includes a glass viewing window 61. When the door of the box body 6 is closed, the user can observe the condition of the laundry in the inner tube assembly 3 through the glass observation window 61.

With continued reference to FIG. 20, the inner cylinder assembly 3 of the present invention mainly includes an inner cylinder body 31, a reinforcing member 32, a cover 33 and a water cavity 34.

With continued reference to FIG. 20, the reinforcing member 32 is disposed at the bottom end of the inner cylinder body 31 and is fixedly connected (eg, welded, riveted, bolted, etc.) to the inner cylinder body 31 or made integrally. Although not explicitly shown in the drawings, the reinforcing member 32 has a circular structure as a whole so as to seal the bottom of the inner cylinder body 31. It is not difficult to see from FIG. 20 that the thickness of the reinforcing member 32 is larger than the thickness of the side wall of the inner cylinder body 31 in order to improve the strength and anti-deformation ability of the reinforcing member 32. Further, a water inlet hole (not labeled) is provided at an axial center of the reinforcing member 32, and the water inlet hole is used to introduce washing water or tap water into the water cavity 34. In a preferred embodiment of the present invention, the water inlet is used to connect the drive shaft assembly 4 (specifically, the drive shaft 41). The transmission shaft 41 can be connected to the reinforcing member 32 or made integrally by any feasible method (such as welding, plugging, and screwing).

As shown in FIGS. 20 to 22, the cover 33 is disposed on the inner side of the reinforcing member 32 (the right side of the reinforcing member 32 in FIG. 20) and is sealingly connected with the reinforcing member 32, and thus forms the water cavity 34. Those skilled in the art can understand that the cover 33 and the reinforcing member 32 can be sealed and connected together by any feasible connection methods, for example, ultrasonic welding, cladding, and sealing screw connection. In addition, those skilled in the art can make the cover 33 integrally with the inner cylinder body 31 and / or the reinforcing member 32 as required. It is not difficult to see from FIG. 20 and FIG. 21 that the cover 33 is a disc structure. The disc structure is provided with a plurality of spray holes 331, each of which is in communication with the water cavity 34. Preferably, as shown in FIG. 21, the plurality of spray holes 331 are arranged at equal intervals around the axis of the cover 33. Alternatively, those skilled in the art may also arrange a plurality of spray holes 331 on the cover 33 in other arbitrary arrangements according to needs. For example, the plurality of injection holes 331 are compactly provided near the axis of the inner cylinder body 31. Those skilled in the art can understand that the number of the spray holes 331 may be any number, such as five, seven, eight, nine, and the like.

As shown in FIG. 20 and FIG. 22, each of the spray holes 331 except the axis has an angle with the axis of the inner cylinder body 31 so that the spray holes 331 can spray the washing water in the water cavity 34 into the inner cylinder evenly. In the body 31. Further, the spray holes 331 are flat, so that the washing water sprayed from the spray holes 331 has a waterfall shape. In addition, those skilled in the art can also set the spray holes 331 in any other feasible form according to requirements, for example, the spray holes 331 are set in a circular hole shape, an oval hole shape, a triangular hole shape, or the like.

Further, although it is not shown in the drawings, those skilled in the art may also provide a plurality of ribs on the side of the cover 33 away from the reinforcing member 32 according to needs, and the ribs can impact and knock on the inner tube body 31. Laundry to optimize the washing effect of laundry. Those skilled in the art can understand that the ribs can take any form, such as a Y-shaped structure, a pulsator-shaped structure, a rectangular bump, and the like.

Furthermore, those skilled in the art can also set the cover 33 into any other feasible shape, such as a Y shape, a triangle shape, a rectangle shape, a circular ring shape, and the like, as required.

With continued reference to FIG. 20, a side of the cover 33 facing the reinforcing member 32 is provided with a first groove (not shown in the figure). When the cover 33 and the reinforcing member 32 are sealed and connected together, the first groove forms a water cavity 34. Although it is not clearly shown in the figure, it is not difficult to see from FIG. 21 that the first groove is a circular groove, so the water cavity 34 is a circular water cavity. In a preferred embodiment of the present invention, the circular water cavity is disposed coaxially with the inner cylinder body 31. In addition, those skilled in the art can set the first groove into any other feasible structure according to requirements, such as a circular groove, a circular groove, a triangular groove, and the like. Similarly, those skilled in the art can also set the cover 33 into any other feasible structure according to requirements, such as a ring, a circle, a triangle, and the like.

In addition, those skilled in the art may also provide a second groove on the side of the reinforcing member 32 facing the cover 33 according to need. When the cover 33 and the reinforcing member 32 are hermetically connected together, the first groove and the second groove together form a water cavity 34. Alternatively, those skilled in the art may also not provide a first groove on the cover 33 as required, and provide a second groove only on the side of the reinforcing member 32 facing the inner cover 33. When the cover 33 and the reinforcing member 32 are hermetically connected together, the second groove alone forms a water cavity 34.

As shown in FIG. 23, the transmission shaft assembly of the present invention mainly includes a transmission shaft 41, a connecting member 42, and a bolt 43. The transmission shaft 41 is provided with a passage 411 penetrating the axial direction of the transmission shaft 41, and the passage 411 includes a first passage 4111 and a second passage 4112 which are communicated with each other. Wherein, the first passage 4111 is disposed away from the shaft center of the transmission shaft 41. A journal is provided at one end of the transmission shaft 41 near the first channel 4111, and the diameter of the journal is smaller than the diameter of other parts of the transmission shaft 41. The journal is also coaxially provided with a screw hole (not shown in the figure). The connecting member 42 is provided with a through hole 421, an annular flange 422, and a mounting hole (not shown in the figure).

As shown in FIGS. 20 and 24, in the installed state, the left end of the transmission shaft 41 passes through the rotor of the drive motor 5 and abuts the right end of the connecting member 42, and the bolt 43 passes through the mounting hole on the connecting member 42 and The screw holes on the transmission shaft 41 are screwed together, and thus the transmission shaft 41, the connecting member 42 and the rotor of the drive motor 5 are tightly fixed together. In this state, the annular flange 422 and the transmission shaft 41 are coaxial.

Continue to refer to FIG. 20 and FIG. 24. In the installed state, the right end of the transmission shaft 41 is inserted into the water inlet hole on the cover 33, and is fixedly connected with or integrated with the cover 33 so that the channel 411 and water The cavity 34 is in communication. Those skilled in the art can understand that the transmission shaft 41 and the cover 33 can be connected together in any feasible manner, for example, threaded connection, welding, plugging, and the like.

With continued reference to FIG. 20 and FIG. 24, as an alternative to the above technical solution of allowing the passage 411 to pass through the drive shaft 41 along the axis of the drive shaft 41, those skilled in the art may also make the passage 411 not penetrate the right end of the drive shaft 41 as needed. The passage 411 in FIG. 20 is provided as a blind hole opened at the left end of the transmission shaft 41. A radial hole structure is provided at a portion of the transmission shaft 41 protruding into the water cavity 34 so that the hole structure communicates with the channel 411 and the water cavity 34 respectively.

With continued reference to FIG. 20, the drum washing machine of the present invention further includes a circulation pump 11 and a circulation water pipe 12. Among them, the circulation pump 11 is preferably disposed in the casing 1 and fixedly connected to the casing 1. Alternatively, those skilled in the art can also make the circulation pump 11 and the outer cylinder 1 fixedly connected as required. The water inlet of the circulation pump 11 is connected to the connection pipe 8 and thus opens to the inside of the outer cylinder 2. The water outlet of the circulating pump 11 is connected to one end of the circulating water pipe 12 and is in communication, and the other end of the circulating water pipe 12 is in communication with the passage 411. During operation, the circulating pump 11 pumps the washing water in the outer cylinder 2 to the channel 411 through the circulating water pipe 12, the channel 411 conveys the washing water to the water cavity 34, and a plurality of spray holes 331 spray the washing water to the inner cylinder body 31. Clothing.

As shown in FIGS. 20 and 23, the water outlet end of the circulating water pipe 12 is inserted into the annular flange 422 of the connecting member 42. Further, a bearing 13 and a rotary seal ring 14 are provided between the circulating water pipe 12 and the connecting member 42. The bearing 13 is used to support the circulating water pipe 12 so that the transmission shaft 41 can rotate freely relative to the circulating water pipe 12. The rotary seal ring 14 is used to seal the circulating water pipe 12 and the connecting member 42 and prevent washing water from leaking out from the gap between the circulating water pipe 12 and the connecting member 42.

Further, in a preferred embodiment of the present invention, the water pressure provided by the circulation pump 11 can cause part of the washing water sprayed from the spray holes 331 to fall on the glass observation window 61 and the sealing window pad 7. In order to clean the glass viewing window 61 and the sealing window pad 7, avoid the accumulation of detergent on the glass viewing window 61 and the sealing window pad 7, and affect the cleanliness of the glass viewing window 61 and the sealing window pad 7, and then affect the user's observation through the glass The window 61 observes the washing condition of the laundry in the inner tube assembly 3.

Those skilled in the art can understand that the circulation pump 11 of the present invention can pump the washing water in the outer cylinder 2 into the water cavity 34 located at the bottom end of the inner cylinder body 31, and then through a plurality of spray holes communicating with the water cavity 34. 331 sprays washing water into the inner cylinder body 31. Therefore, compared with the conventional drum washing machine in which the spray holes / nozzles are arranged near the front end of the outer tube 2 in the prior art, the drum washing machine of the present invention prevents the water flow sprayed from the spray holes / nozzles from accumulating at the front end of the outer tube 2 and obstructs the user from observing the inside. The condition of the line of sight of the laundry in the tube assembly 3. Further, the washing water sprayed from the plurality of spray holes 331 of the present invention can also clean the glass observation window 61 and the sealing window pad 7 to ensure the cleanliness of the glass observation window 61 and the sealing window pad 7. Furthermore, the washing water sprayed from each of the spray holes 331 will rotate with the rotation of the inner cylinder body 31 to form a circular spray water flow, which optimizes the spray effect.

Although it is not shown in the figure, the present invention also provides another embodiment of the transmission shaft assembly 4. Those skilled in the art can make the transmission shaft assembly 4 only include the transmission shaft 41 according to requirements, and one end of the transmission shaft 41 and The reinforcing member 32 is coaxially fixedly connected, so that the other end of the transmission shaft 41 is coaxially fixedly connected with the rotor of the driving motor 5. Further, the first channel 4111 is coaxially disposed with the transmission shaft 41, and the diameter of the first channel 4111 is made sufficiently large. Further, the water outlet end of the circulating water pipe 12 is directly inserted into the first channel 4111, and the two are connected to each other in a rotationally sealed manner.

Although it is not shown in the figure, the present invention also provides another embodiment of a drum washing machine. Those skilled in the art may omit the circulation pump 11 according to needs, so that the water inlet end of the circulating water pipe 12 and the water outlet of the water inlet valve The valve ports are connected. When the water inlet of the water inlet valve is connected to an external water source, the water inlet valve can provide tap water to the water chamber 34 through the circulating water pipe 12, and then the plurality of spray holes 331 spray the tap water into the inner cylinder body 31.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the accompanying drawings. However, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical solutions after these changes or replacements will fall within the protection scope of the present invention.

Claims

A spraying system of a drum washing machine, the drum washing machine includes a box body, an outer tube fixedly disposed in the box body, and an inner tube rotatably disposed in the outer tube;

It is characterized in that the spray system includes a circulation pump and a plurality of spray structures,

The water inlet of the circulation pump leads into the outer cylinder, the water outlet of the circulation pump communicates with the plurality of spraying structures, and the circulation pump is used for pumping the washing water in the outer cylinder to the water tank. Said multiple spraying structures;

The plurality of spray structures are arranged at the rear of the outer cylinder, and the water outlet of each of the spray structures is directed to the inner cylinder, so that each of the spray structures can circulate the circulation The washing water pumped by the pump is sprayed into the inner cylinder.
The spraying system of the drum washing machine according to claim 1, wherein the spraying system further comprises a water cavity, and the circulation pump communicates with the plurality of spraying structures by means of the water cavity, respectively.
The spray system of the drum washing machine according to claim 2, wherein the water cavity is formed at a bottom end of the outer tub.
The spraying system of a drum washing machine according to claim 3, wherein the outer cylinder comprises an outer cylinder body and a cover, the cover and the bottom end of the outer cylinder body are sealedly connected, and the water cavity It is formed between the cover and the outer cylinder body.
The spraying system of the drum washing machine according to claim 4, wherein a side of a bottom end of the outer cylinder body facing the cover is provided with a first groove constituting the water cavity; and / or The side of the cover facing the bottom end of the outer cylinder body is provided with a second groove constituting the water cavity.
The spray system of the drum washing machine according to any one of claims 2 to 5, wherein the spray structure is a spray hole formed in the outer tub.
The spray system of the drum washing machine according to any one of claims 1 to 5, wherein the spray structure is a nozzle or a nozzle fixed to the outer cylinder.
The spraying system of the drum washing machine according to any one of claims 1 to 5, wherein the plurality of spraying structures are arranged at equal intervals around the axis of the outer cylinder; and / or on the inner cylinder A through hole is provided at a position corresponding to the spray structure, and the washing water sprayed from the spray structure passes through the through hole and enters the inner cylinder.
An outer cylinder of a drum washing machine is characterized in that a plurality of spray structures are provided at the rear of the outer cylinder.
A drum washing machine, characterized in that the drum washing machine comprises the spray system according to any one of claims 1 to 8; or the drum washing machine comprises an outer drum according to claim 9.
An inner drum assembly of a drum washing machine, characterized in that the inner drum assembly includes an inner drum body, a water cavity provided on the inner drum body, and a plurality of spray holes provided on the inner drum body;

The plurality of spray holes are respectively communicated with the water cavity, and the plurality of spray holes are used to spray tap water or washing water in the water cavity into the inner cylinder body.
The inner drum assembly of the drum washing machine according to claim 11, wherein the inner drum assembly further comprises a cover, the cover and the bottom end of the inner drum body are sealedly connected, and the water cavity is formed at Between the cover and the inner cylinder body.
The inner drum assembly of the drum washing machine according to claim 12, wherein a side of a bottom end of the inner drum body facing the cover is provided with a first groove constituting the water cavity; and / or The side of the cover facing the bottom end of the inner cylinder body is provided with a second groove constituting the water cavity.
The inner drum assembly of the drum washing machine according to claim 13, wherein the cover is provided on the outer side of the inner drum body, and the cover is provided with a water inlet hole communicating with the water cavity. .
The inner drum assembly of the drum washing machine according to claim 14, wherein the inner drum assembly further comprises a drive shaft for driving the inner drum body to rotate, and one end of the drive shaft is inserted into the water inlet hole. Fixedly connected to the cover;

The transmission shaft is provided with a channel along the axial direction, one end of the channel is in communication with the water cavity, and the other end of the channel is open to the outside.
The inner drum assembly of the drum washing machine according to any one of claims 12 to 15, wherein the cover is triangular or Y-shaped; and / or the water cavity is triangular or Y-shaped.
The inner drum assembly of the drum washing machine according to claim 16, wherein the plurality of spray holes are uniformly provided on the inner drum body.
A drum washing machine, characterized in that the drum washing machine includes a water supply device and the inner tube assembly according to any one of claims 11 to 17, and the water supply device is used to supply water to the water cavity.
The drum washing machine according to claim 18, wherein the water supply device is a circulation pump, and a water inlet of the circulation pump opens into an outer cylinder of the drum washing machine, and a water outlet of the circulation pump and the water pump The water cavity is connected.
The drum washing machine according to claim 18, wherein the water supply device is a water inlet valve, a water inlet of the water inlet valve is connected to a water source, and a water outlet of the water inlet valve and the water cavity Connected.
A spraying system of a drum washing machine, the drum washing machine includes a box body, an outer tube fixedly disposed in the box body, an inner tube rotatably disposed in the outer tube, and supporting and driving the inner tube to rotate Drive shaft,

It is characterized in that the spraying system includes:

A plurality of spray holes, which are provided at the bottom of the inner cylinder;

A channel formed on the transmission shaft, and a water outlet end of the channel is respectively communicated with the plurality of spray holes;

The circulation pump has a water inlet opening into the outer cylinder, and a water outlet of the circulation pump communicating with the water inlet end of the channel. The circulation pump is used for pumping the washing water in the outer cylinder to the channel, so that The plurality of spray holes spray washing water into the inner cylinder.
The spraying system of the drum washing machine according to claim 21, wherein the channel penetrates the transmission shaft along an axial direction of the transmission shaft.
The spraying system of a drum washing machine according to claim 22, wherein the spraying system further comprises a water cavity provided at the bottom of the inner tub, the water cavity being located in the channel and the plurality of sprays The holes are in communication with the water outlet end of the channel and the plurality of spray holes, respectively.
The spray system of the drum washing machine according to claim 23, wherein the plurality of spray holes are arranged at equal intervals around the axis of the inner tub.
The spraying system of the drum washing machine according to any one of claims 21 to 24, wherein the spraying system further comprises a circulating water pipe, and one end of the circulating water pipe is connected to a water outlet of the circulating pump The other end of the circulating water pipe is connected to the water inlet end of the channel.
The spraying system of a drum washing machine according to claim 25, wherein the spraying system further comprises a connecting member having a through hole, one end of the connecting member is fixedly connected to the transmission shaft, and the connecting member The other end of the connection is connected with the other end of the circulating water pipe in a rotationally sealed manner, so that the circulating water pipe and the channel are communicated through a through hole on the connecting member.
A transmission shaft assembly of a drum washing machine, the drum washing machine includes a box body, an outer tube fixedly disposed in the box body, and an inner tube rotatably disposed in the outer tube,

It is characterized in that the transmission shaft assembly includes a shaft for supporting and driving the inner cylinder to rotate, and a passage is formed on the transmission shaft; the drum washing machine further includes a circulation pump and a bottom portion of the inner cylinder. A plurality of spray holes, the water inlet of the circulation pump leads into the outer cylinder, the water outlet of the circulation pump communicates with the water inlet end of the channel, and the water outlet end of the channel is connected with the plurality of injection holes The circulation pumps are respectively used for pumping the washing water in the outer cylinder to the channel, so that the plurality of spray holes spray the washing water into the inner cylinder.
The transmission shaft assembly of the drum washing machine according to claim 27, wherein the transmission shaft assembly further comprises a mounting bracket fixedly connected to or integrally formed with the transmission shaft, and the transmission shaft is connected to the transmission shaft through the mounting bracket. The inner cylinders are connected.
The transmission shaft assembly of the drum washing machine according to claim 28, wherein the mounting frame is triangular or Y-shaped.
A drum washing machine, characterized in that the drum washing machine comprises the spray system according to any one of claims 21 to 26; or the drum washing machine comprises a drive shaft according to any one of claims 27 to 29 Components.
An inner cylinder component of a drum washing machine, characterized in that the inner cylinder component includes an inner cylinder and a transmission shaft which are coaxially fixed together or made integrally;

The transmission shaft is provided with a channel along its axis direction;

A plurality of spray holes aligned with the channel are provided on the bottom end of the inner cylinder;

One end of the transmission shaft abuts the bottom end of the inner cylinder, and the passage and the plurality of injection holes are thus communicated.
The inner tube assembly of a drum washing machine according to claim 31, wherein the transmission shaft includes a front portion and a rear portion, and a diameter of the channel in the rear portion is larger than that of the channel in the front portion Diameter to increase the area of the channel projected onto the rear end of the inner cylinder.
The inner drum assembly of a drum washing machine according to claim 32, wherein the inner drum assembly further comprises a mounting bracket, the mounting bracket includes an inner connection portion and an outer connection portion, and the mounting frame is connected through the inner connection The part is fixedly connected or integrally made with the front part, and the mounting bracket is fixedly connected or integrally made with the inner cylinder through the outer connecting part.
The inner drum assembly of the drum washing machine according to claim 31, wherein the inner drum assembly further comprises a seal ring provided between the transmission shaft and the inner drum, and the transmission shaft and the inner drum The cartridge realizes a sealed connection by clamping the sealing ring.
The inner drum assembly of the drum washing machine according to claim 34, wherein an end of the transmission shaft near the inner drum is provided with an annular groove for receiving the seal ring.
The inner drum assembly of the drum washing machine according to any one of claims 31 to 35, wherein one of the plurality of spray holes is provided at an axial center of the inner drum and points to the inner drum of the inner drum. The inner cylinder mouth; the remaining spray holes are symmetrically arranged around the axis of the inner cylinder and respectively point to the side wall of the inner cylinder.
A drum washing machine, characterized in that the drum washing machine includes a water supply device and the inner tube assembly according to any one of claims 31 to 36, and the water supply device is used to supply water to the channel.
The drum washing machine according to claim 37, wherein the water supply device is a circulation pump, a water inlet of the circulation pump opens into an outer cylinder of the drum washing machine, and a water outlet of the circulation pump and the water pump The passage is connected.
The drum washing machine according to claim 38, wherein the drum washing machine further comprises a circulating water pipe, and the circulating pump communicates with the channel through the circulating water pipe.
The drum washing machine according to claim 37, wherein the water supply device is a water inlet valve, a water inlet of the water inlet valve is connected to a water source, and a water outlet of the water inlet valve is in communication with the channel .
An inner drum component of a drum washing machine is characterized in that the inner drum component includes:

A water inlet hole is arranged on the bottom end of the inner cylinder body;

A cap, which is disposed inside the inner cylinder body and is sealedly connected to the bottom end of the inner cylinder body;

A water cavity formed between the inner cylinder body and the cover and communicating with the water inlet hole;

A plurality of spray holes are disposed on the cover, one end of each spray hole is in communication with the water cavity, and the other end of each spray hole is directed to the inside of the inner cylinder body.
The inner drum assembly of the drum washing machine according to claim 41, wherein a side of the cover facing the bottom end of the inner drum body is provided with a first groove constituting the water cavity; and / or The bottom end of the inner cylinder body facing the cover is provided with a second groove constituting the water cavity.
The inner drum assembly of the drum washing machine according to claim 42, wherein the cover has a disc structure.
The inner drum assembly of the drum washing machine according to claim 43, wherein the plurality of spray holes are provided on the cover at equal intervals around an axis of the inner drum body.
The inner drum assembly of the drum washing machine according to claim 44, wherein a plurality of ribs are provided on the disc structure.
The inner drum assembly of the drum washing machine according to any one of claims 41 to 45, wherein the inner drum assembly further comprises a drive shaft for driving the inner drum body to rotate, and one end of the drive shaft Inserted into the water inlet hole and fixedly connected coaxially with the inner cylinder body;

The transmission shaft is provided with a channel along the axial direction, one end of the channel is in communication with the water cavity, and the other end of the channel is open to the outside.
The inner drum assembly of the drum washing machine according to claim 46, wherein the inner drum assembly further comprises a reinforcing member, the reinforcing member is fixedly connected to the bottom end of the inner drum body or is made integrally.
A drum washing machine, characterized in that the drum washing machine includes a water supply device and the inner tube assembly according to any one of claims 41 to 47, and the water supply device is used to supply water to the water cavity.
The drum washing machine according to claim 48, wherein the water supply device is a circulation pump, and a water inlet of the circulation pump opens into an outer cylinder of the drum washing machine, and a water outlet of the circulation pump and the water pump The water inlet is connected.
The drum washing machine according to claim 48, wherein the water supply device is a water inlet valve, a water inlet of the water inlet valve is connected to a water source, and a water outlet of the water inlet valve and the water inlet Holes communicate.