WO2019237948A1

WO2019237948A1 - Front-loading washing machine and spraying system and sealing window gasket thereof

Info

Publication number: WO2019237948A1
Application number: PCT/CN2019/089430
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: 2019-05-31
Publication date: 2019-12-19
Also published as: CN110607660A

Abstract

A spraying system of a front-loading washing machine, comprising a circulating pump (8), a shielding structure (51), and multiple nozzles (12). A water inlet of the circulating pump is communicated with the interior of an outer tub (2), a water outlet of the circulating pump is separately communicated with the multiple nozzles, and the circulating pump is used for pumping washing water in the outer tub to the multiple nozzles; the multiple nozzles are all disposed on a sealing window gasket (5), and a spraying port (123) of each nozzle points to an inner tub (3), so that each nozzle can spray the washing water pumped by the circulating pump into the inner tub; the shielding structure is disposed on the inner side of the sealing window gasket, and is used for shielding the end of each nozzle. For a front-loading washing machine using the above spraying system, the mounting structure for nozzles is simplified, the original structure of the outer tub is maintained, and the manufacturing costs are low.

Description

Drum washing machine with spray system and sealed window pad

Technical field

The invention belongs to the field of household appliances, and specifically provides a drum washing machine, a spraying system thereof and a sealed window pad.

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.

Although the drum-type washing machine disclosed in the patent document with the publication number of CN102482834B has a strong ability to clean clothes, the water tank provided with a plurality of spray outlets has a complicated structure and high production cost.

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 order to solve the above-mentioned problems in the prior art, that is, to solve the problems of complicated installation structure and high production cost of the spraying device of the existing drum washing machine with a circular spraying function, the present invention provides a spraying method for a drum washing machine. Shower system, 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 an outer tube disposed between the box body and the outer tube Sealed window mat; the spray system includes a circulation pump, a shielding structure and a plurality of nozzles; the circulation pump is used to pump washing water to the plurality of nozzles; the plurality of nozzles are all arranged on the sealed window mat And the spray port of each of the nozzles is directed to the inner cylinder, so that each of the nozzles can inject the washing water pumped by the circulation pump into the inner cylinder; the shielding structure is provided in the inner cylinder The inside of the window gasket is sealed, and the shielding structure is used to cover an end of each of the nozzles.

In a preferred technical solution of the above-mentioned spraying system, the sealing window pad is provided with a plurality of mounting holes, and each of the mounting holes contains one of the nozzles.

In a preferred technical solution of the above spraying system, the mounting hole is a through hole, and a diameter of the through hole is smaller than a diameter of the nozzle, so that the through hole and the nozzle are connected in an interference fit.

In a preferred technical solution of the above-mentioned spraying system, the shielding structure includes a plurality of inverted bowl-shaped structures connected to the sealing window pad, and the bowl-shaped structure is formed between the bowl-shaped structure and the sealing window pad. There is a cavity for accommodating the end of the nozzle, and an opening corresponding to the injection port is also provided on a side of the bowl-shaped structure near the inner cylinder.

In a preferred technical solution of the above-mentioned spray system, the shielding structure is a ring structure with one end connected to the sealing window pad, and an opening is formed between the ring structure and the sealing window pad to point to the inside. A groove of the barrel, the groove is used to receive the ends of the plurality of nozzles.

In a preferred technical solution of the spray system, the water inlet of the circulation pump is in communication with the outer cylinder, and the water outlet of the circulation pump is in communication with the plurality of nozzles, respectively; and / or, the spray system It also includes an annular cavity connected to or integrated with the plurality of nozzles, and the annular cavity is in communication with the plurality of nozzles and the water outlet of the circulation pump, respectively.

In a preferred technical solution of the above spraying system, a mounting bracket is provided on the annular cavity, and the annular cavity is fixedly connected to the outer cylinder through the mounting bracket.

In a preferred technical solution of the above-mentioned spraying system, the plurality of nozzles are arranged at equal intervals along a circumferential direction of the sealing window pad.

In addition, the present invention also provides a sealed window pad for 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 sealed window gasket is disposed between the box and the outer cylinder, and is characterized in that the sealed window gasket is provided with a plurality of nozzles, and the drum washing machine further includes a circulation pump and a shielding structure; The water inlet opens into the outer cylinder, the water outlet of the circulation pump communicates with the plurality of nozzles separately, and the circulation pump is used to pump the washing water in the outer cylinder to the plurality of nozzles; each The spray nozzles of the nozzles are all directed to the inner cylinder, so that each of the nozzles can spray the washing water pumped by the circulation pump into the inner cylinder; the shielding structure is provided on the sealing window cushion. Inside, the shielding structure is used to cover an end of each of the nozzles.

In addition, the present invention also provides a drum washing machine, which includes the sprinkler system according to any one of the above-mentioned preferred technical solutions of the sprinkler system.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, by providing the nozzle on the sealed window pad, the drum washing machine of the present invention is compared with the drum washing machine disclosed in the patent document with publication number CN102482834B. Not only the installation structure of the nozzle is simpler, but there is no need to change the structure of the outer cylinder. Avoiding the separate design of the production mold and manufacturing process for the outer cylinder, reducing the manufacturing cost of the outer cylinder.

Further, the present invention also covers the end of each nozzle by a shielding structure provided inside the sealing window pad, so that the sealing window pad looks more beautiful, and at the same time, it can prevent the nozzle from catching clothes.

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 front view of a drum washing machine of the present invention;

2 is a cross-sectional view taken along the A-A direction of FIG. 1;

Figure 3 is a sectional view taken along the direction B-B of Figure 1;

4 is a first side view of an outer cylinder portion of the present invention;

5 is a second side view of an outer cylinder portion of the present invention;

6 is a front view of an outer cylinder portion of the present invention;

Figure 7 is a sectional view taken along the direction C-C of Figure 6;

8 is an enlarged view of a portion D in FIG. 7;

9 is a schematic view showing an effect of a shielding structure according to the present invention;

Figure 10 is a side view of a nozzle of the present invention;

11 is a sectional view of a nozzle of the present invention;

Figure 12 is a front view of a nozzle of the present invention;

13 is a schematic view of a first spray effect of a nozzle of the present invention;

14 is a schematic view of a second spraying effect of the nozzle of the present invention.

1. Box body; 2. Outer tube; 3. Inner tube; 4. Door body; 5. Sealed window pad; 51. Blocking structure; 511; Cavity; 512; Opening; 6. Counterweight; 7. Water outlet pipe; 8. Circulating pump; 9. Drain pipe; 10. Circulating water pipe; 11. Annular cavity; 12. Nozzle; 121; Main body; 1211; Channel; 122; Shelter; 123; Spray port.

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. Connected, or integrated; they can also be indirectly connected through an intermediate medium, which 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.

As shown in FIG. 1 to FIG. 3, 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 counterweight 6, a water outlet pipe 7, a circulation pump 8, and drainage. Tube 9 and circulating water tube 10. 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 counterweight 6 is installed on the outer cylinder 2 and is used to increase the inertia of the outer cylinder 2 and reduce the vibration amplitude of the outer cylinder 2 when the inner cylinder 3 runs.

As shown in FIG. 3, the water outlet pipe 7, the circulation pump 8, the drainage pipe 9, and the circulation water pipe 10 are all disposed in the cabinet 1, and the circulation pump 8 is fixed to the cabinet 1, or a person skilled in the art can also according to requirements The circulation pump 8 is fixed to the outer cylinder 2. The circulation pump 8 includes a water inlet and two water outlets. Among them, the water inlet of the circulation pump 8 is connected to one end of the water outlet pipe 7, the other end of the water outlet pipe 7 is connected to the bottom end of the outer cylinder 2, and the water inlet of the circulation pump 8 and the outer cylinder 2 are thus communicated. One water outlet of the circulation pump 8 is connected to one end of the drain pipe 9, and the other end of the drain pipe 9 is open to the outside. The other water outlet of the circulating pump 8 is connected to one end of the circulating water pipe 10, and the other end of the circulating water pipe 10 opens into the outer cylinder 2.

In a preferred embodiment of the present invention, the circulation pump 8 is a bi-directional rotary pump. When the circulation pump 8 rotates forward, the circulation pump 8 pumps wash water to the drain pipe 9; when the circulation pump 8 reverses, the circulation pump 8 will wash Water is pumped to the circulating water pipe 10. In addition, those skilled in the art can also set the circulation pump 8 to have only one water outlet as required, and make the water outlet communicate with the circulation water pipe 10. Then, a separate water pump or shut-off valve is provided for the drain pipe 9, and the wash water in the outlet pipe 7 flows to the drain pipe 9 by opening the water pump or the shut-off valve.

Continuing to refer to FIG. 3, the front end of the box 1 (the right side of the box 1 in FIG. 3) 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. 3) 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. 3) 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.

As shown in FIG. 2 to FIG. 8, the drum washing machine of the present invention further includes a spraying system. The spraying system mainly includes a circulating pump 8, a circulating water pipe 10, an annular cavity 11, and a plurality of nozzles 12. The circulation pump 8 is as described above. The annular cavity 11 is provided at the front end of the outer cylinder 2 and is fixedly connected to the outer cylinder 2 or the counterweight 6. In a preferred embodiment of the present invention, a mounting bracket is provided on the annular cavity 11, and the annular cavity 11 is fixed to the outer cylinder 2 or the counterweight 6 through the mounting bracket. Those skilled in the art can understand that the mounting bracket can be fixed to the outer cylinder 2 or the counterweight 6 by any feasible connection method, such as bolt connection, screw connection, snap connection, bolt connection, and the like.

As shown in FIGS. 3 and 8, the annular cavity 11 is provided with a water inlet and a plurality of outlets. The inlet of the annular cavity 11 communicates with the end of the circulating water pipe 10 away from the circulating pump 8, and each outlet of the annular cavity 11 Both are connected to a nozzle 12. When the circulation pump 8 is reversed, the circulation pump 8 can pump the washing water to the plurality of nozzles 12 through the circulating water pipe 10, and then the nozzles 12 spray the washing water into the inner cylinder 3. Those skilled in the art can understand that the nozzle 12 can be connected with the annular cavity 11 by any feasible connection form, for example, by integral injection molding with the annular cavity 11 and can be connected by plugging, screwing, or welding. , Ultrasonic welding, etc. are connected together.

As shown in FIGS. 4 and 5, a plurality of nozzles 12 are arranged on the sealing window gasket 5 at equal intervals along the circumferential direction of the sealing window gasket 5 so that the plurality of nozzles 12 can collectively provide a uniform water flow for the inner cylinder 3 (such as (Shown in Figure 1). Those skilled in the art can understand that the number of the nozzles 12 may be any value, such as five, six, eight, nine, and the like. In addition, those skilled in the art may also arrange a plurality of nozzles 12 on the sealing window gasket 5 at non-equidistances as required.

As shown in FIG. 8, the sealing window pad 5 is provided with a plurality of through holes (not shown in the figure) corresponding to the number of the nozzles 12, and the diameter of each through hole is smaller than the diameter of the nozzle 12 so that the nozzle 12 and the sealing window The pads 5 are connected together by an interference fit, and thus the seal between the nozzle 12 and the sealing window pad 5 is achieved. In addition, those skilled in the art can also set the through holes on the sealing window pad 5 as other installation holes in any form, such as threaded holes, splined holes, tapered holes, polygonal holes, and the like.

As shown in FIGS. 7 and 8, a plurality of shielding structures 51 corresponding to the number of the nozzles 12 are provided inside the sealing window pad 5. The shielding structure 51 is disposed around the through hole. Those skilled in the art can understand that the shielding structure 51 and the sealing window pad 5 can be connected together in any feasible manner, such as integral injection molding, welding, ultrasonic welding, and the like.

As shown in FIG. 9, the shielding structure 51 is an inverted bowl-shaped structure, and a cavity 511 is formed between the shielding structure 51 and the sealing window pad 5. The end of the nozzle 12 is prevented from catching clothes when a user puts clothes in or takes out clothes from the inner drum 3. Further, an opening 512 is also provided on the side of the shielding structure 51 facing the inner cylinder 3, and the opening 512 is aligned with the spray port 123 (shown in FIG. 10 on the right) of the nozzle 12 to ensure that the nozzle 12 can smoothly wash water Sprayed into the inner cylinder 3.

As shown in FIGS. 10 to 12, the nozzle 12 of the present invention mainly includes a main body 121, a shielding portion 122 provided at one end of the main body 121, an injection port 123 formed between the main body 121 and the shielding portion 122, and an opposite end of the main body 121. Connection (not shown). The main body 121 is connected to the annular cavity 11 through a connecting portion. A channel 1211 is provided inside the main body 121. A lower end (water inlet end) of the channel 1211 is communicated with the annular cavity 11, and an upper end (water outlet end) of the channel 1211 is communicated with the injection port 123. Those skilled in the art can understand that the main body 121 and the shielding portion 122 may be connected together in any feasible manner, such as integral injection molding, welding, ultrasonic welding, and the like. Further, the spray port 123 is flat so that the nozzle 12 can spray fan-shaped washing water.

As shown in FIG. 11, the height of the lower wall of the spraying port 123 (ie, the upper end of the main body 121) gradually increases along the spraying direction of the washing water sprayed from the spraying port 123; wherein, the height is that the upper end of the main body 121 reaches the main body 121. The distance from the bottom. The height of the upper wall of the spraying port 123 (that is, the side of the blocking portion 122 near the main body 121) gradually increases along the spraying direction of the washing water sprayed from the spraying port 123; wherein, the height is the lower side (bottom of the blocking portion 122) End surface) to the lower end of the main body 121.

It is not difficult to see from FIG. 11 that the height difference of the lower wall of the injection port 123 is H. In a preferred embodiment of the present invention, the upper wall and the lower wall of the injection port 123 are substantially parallel, and therefore, the height difference of the upper wall of the injection port 123 is also H. Corresponding to the height difference H, the angle between the upper wall of the injection port 123 and the horizontal direction is α. The purpose of setting the upper wall and the lower wall of the spray port 123 to the above structure is to direct the spray direction of the spray port 123 to the axis of the inner tube 3 so that the washing water can fall uniformly into the inner tube 3. Alternatively, those skilled in the art can also set the above-mentioned H and α to any feasible values according to requirements. For example, α is set to 0 ° or 90 °, even if the ejection direction of the ejection port 123 and the axis direction of the main body 121 are perpendicular or parallel.

Those skilled in the art can understand that the lower end surface of the shielding portion 122 may be disposed obliquely as described above, or may be disposed perpendicular to the axial direction of the main body 121. The blocking portion 122 plays a role here to collide with the washing water flowing in the channel 1211 and break the washing water, so that the washing water is ejected from the ejection port 123 into a waterfall shape.

As shown in FIG. 12, the connecting end of the main body 121 and the water retaining portion 122 forms a starting end (an arc dotted line in FIG. 12) of the spray port 123, and the height of the starting end gradually increases along the circumferential direction of the main body 121. The height is the distance from the starting end to the lower end of the main body 121.

It is not difficult to see from FIG. 12 that the height difference between the highest point and the lowest point of the starting end is h. Among them, h exists for the purpose of forming an angle β between the flat injection port 123 in FIG. 12 and the horizontal direction in FIG. 12. In a preferred embodiment of the invention, 0 ° <β <90 °.

As shown in FIG. 13, when β = 0 °, the plane formed by the position where the washing water sprayed from the spray port 123 falls is substantially perpendicular to the axis of the inner cylinder 3 (the chain line in FIG. 13).

As shown in FIG. 14, when 0 ° <β <90 °, the plane formed by the position where the washing water sprayed from the spray port 123 falls is inclined with the axis of the inner tube 3 (the chain line in FIG. 14).

Therefore, the existence of the included angle β enables the fan-shaped washing water sprayed from the spray port 123 to have an L-length longitudinally extending coverage on the axis of the inner tube 3 when it falls into the inner tube 3. Among them, L can be any feasible value, such as 3cm, 4cm, 6cm, and the like.

To sum up, the drum washing machine of the present invention not only simplifies the installation structure of the nozzle 12 by arranging the nozzles 12 on the sealing window gasket 5 at equal intervals, but also maintains the original structure of the outer cylinder 2 and reduces the drum The production cost of the washing machine can also provide the laundry in the inner tub 3 with a circular spray of washing water as shown in FIG. 1. Further, the present invention also obliquely sets the spraying port 123 of the nozzle 12 so that the spraying port 123 has an included angle α and an included angle β, so that the nozzle 12 can not only spray washing water toward the axis of the inner cylinder 3, but also enable washing The water covers the inner tub 3 longitudinally along the axis of the inner tub 3, so that the laundry in the inner tub 3 is better sprayed, and the washing effect of the washing machine is optimized.

In another feasible technical solution of the present invention, those skilled in the art can also set the nozzle 12 at any feasible position according to needs. As an example, a plurality of nozzles 12 are disposed at equal intervals at the edges of the outer cylinder mouth. As an example, a plurality of nozzles 12 are provided on the door body 4 at equal intervals.

In yet another feasible technical solution of the present invention, those skilled in the art may also set a plurality of water pipes according to requirements, so that each nozzle 12 can communicate with the water outlet of the circulation pump 8 through a water pipe individually.

It should be noted that the combination of the above technical solutions of the present invention with each other should also fall into the protection scope of the present invention. The combination includes not only a combination of multiple complete technical solutions, but also a reasonable combination of some technical features in each technical solution.

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, an inner tube rotatably disposed in the outer tube, and the box body and the The sealed window gasket between the outer cylinders,

It is characterized in that the spray system includes a circulation pump, a shielding structure and a plurality of nozzles;

The circulation pump is used for pumping washing water to the plurality of nozzles;

The plurality of nozzles are disposed on the sealing window pad, and the spraying port of each nozzle is directed to the inner cylinder, so that each of the nozzles can spray the washing water pumped by the circulation pump into In the inner tube;

The shielding structure is disposed on the inner side of the sealed window pad, and the shielding structure is used to cover an end portion of each of the nozzles.
The spraying system of the drum washing machine according to claim 1, wherein the sealing window pad is provided with a plurality of mounting holes, and each of the mounting holes contains one of the nozzles.
The spray system of a drum washing machine according to claim 2, wherein the mounting hole is a through hole, and a diameter of the through hole is smaller than a diameter of the nozzle so that the through hole and the nozzle pass through. Interfit connection.
The spraying system of the drum washing machine according to claim 1, wherein the shielding structure comprises a plurality of inverted bowl-shaped structures connected to the sealed window pad, and the bowl-shaped structure and the A cavity for accommodating the end of the nozzle is formed between the sealed window pads, and an opening corresponding to the spray port is also provided on a side of the bowl-shaped structure near the inner cylinder.
The spraying system of the drum washing machine according to claim 1, wherein the shielding structure is a ring structure connected at one end to the sealing window pad, and the ring structure and the sealing window pad are formed between An opening is directed to a groove of the inner cylinder, and the groove is used to receive the ends of the plurality of nozzles.
The spray system of a drum washing machine according to any one of claims 1 to 5, wherein a water inlet of the circulation pump is in communication with the outer tub, and a water outlet of the circulation pump is in communication with the plurality of The nozzles are respectively communicated; and / or, the spraying system further includes an annular cavity connected to or integrated with the plurality of nozzles, and the annular cavity is separately from the plurality of nozzles and the water outlet of the circulation pump Connected.
The spray system of the drum washing machine according to claim 6, wherein a mounting bracket is provided on the annular cavity, and the annular cavity is fixedly connected to the outer cylinder through the mounting bracket.
The spray system of the drum washing machine according to any one of claims 1 to 5, wherein the plurality of nozzles are arranged at equal intervals in a circumferential direction of the sealing window pad.
A sealed window gasket for a drum washing machine, characterized in that 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 sealed window A pad is provided between the box and the outer cylinder,

It is characterized in that the sealed window pad is provided with a plurality of nozzles, and the drum washing machine further includes a circulation pump and a shielding structure;

The water inlet of the circulation pump opens into the outer cylinder, and the water outlet of the circulation pump communicates with the plurality of nozzles respectively, and the circulation pump is used to pump the washing water in the outer cylinder to the multiple cylinders. Nozzles

The spray port of each of the nozzles is directed to the inner cylinder, so that each of the nozzles can spray the washing water pumped by the circulation pump into the inner cylinder;

The shielding structure is disposed on the inner side of the sealed window pad, and the shielding structure is used to cover an end portion of each of the nozzles.
A drum washing machine, characterized in that the drum washing machine comprises the spray system according to any one of claims 1 to 8.