WO2019237934A1

WO2019237934A1 - Front-load washing machine and spraying system thereof

Info

Publication number: WO2019237934A1
Application number: PCT/CN2019/089228
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
Also published as: CN110607662A; JP2021526418A

Abstract

A front-load washing machine and a spraying system thereof. The spraying system comprises a circulating pump (8), a circulating water pipe (10), 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 by means of the circulating water pipe, and the circulating pump is used for pumping washing water in the outer tub to the multiple nozzles; the multiple nozzles are all disposed in the vicinity of the front end of the outer tub, and a spraying port of each nozzle points to an inner tub; the position of each nozzle in a vertical direction is higher than the bottom of the edge of an outer tub port of the outer tub. The front-load washing machine of the present invention can effectively avoid a situation where the nozzles submerge in the washing water in the outer tub, so that each nozzle can work normally when the front-load washing machine works.

Description

Drum washing machine and its spraying system

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.

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, a drum type washing machine disclosed in a patent document with a publication number of CN204982446U includes a body, a drum, and a tub in order from the outside to the inside. Wherein, the bucket is provided with a bucket frame, and the bucket frame is provided with a spray hole for spraying water into the drum and a flow guiding mechanism for guiding the spray water to flow circumferentially. After the water column coming out of the spray hole is sprayed to the deflection mechanism, the width is enlarged, and the water column is adjusted to fan-shaped spray to the inner cylinder.

Although the drum type washing machine disclosed in Patent Publication No. CN204982446U has strong cleaning ability for clothes, the structure of the spray hole and the flow guide structure is complicated, and the production cost is high. In addition, the spray hole at the lowest position may be submerged by the washing water in the outer cylinder, and the washing water may not be normally sprayed.

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 problem that the spray holes with the lowest position in the conventional drum washing machine with a circulating spray function are easily flooded by the washing water in the outer tub and cannot work normally, the present invention provides a A spraying system of a drum washing machine, the drum washing machine comprising a box body, an outer tube fixedly disposed in the box body, and an inner tube rotatably disposed in the outer tube, the spraying system including a circulation pump , A circulating water pipe and a plurality of nozzles; a water inlet of the circulating pump opens into the outer cylinder, and a water outlet of the circulating pump communicates with the multiple nozzles through the circulating water pipe respectively, and the circulating pump is used for Pumping the washing water in the outer cylinder to the plurality of nozzles; the plurality of nozzles are arranged near the front end of the outer cylinder, and the spray port of each of the nozzles is directed to the inner cylinder; wherein, The position height of each of the nozzles in the vertical direction is greater than the height of the bottom of the outer cylinder mouth edge of the outer cylinder.

In a preferred technical solution of the above-mentioned spraying system, a vertical distance exists between the lowest position height of the plurality of nozzles and the lowest position of the inner side wall of the outer cylinder, and the vertical distance and the outer cylinder The ratio of the inner diameters of is less than 0.5.

In a preferred technical solution of the above spraying system, a ratio of the vertical distance to an inner diameter of the outer cylinder is less than 0.25.

In a preferred technical solution of the above spraying system, a ratio of the vertical distance to an inner diameter of the outer cylinder is equal to 0.1.

In a preferred technical solution of the above spraying system, the plurality of nozzles are all disposed on a sealing window mat of the drum washing machine, and the sealing window mat is disposed between the box body and the outer tub.

In a preferred technical solution of the above-mentioned spraying system, the spraying system further includes a plurality of semi-annular structures which are fixed together or integrated with the sealing window pad, and each of the semi-annular structures surrounds one of the Nozzle settings.

In a preferred technical solution of the above-mentioned spraying system, the spraying system further includes an annular cavity connected to or integrally formed with the plurality of nozzles, and the annular cavity is connected with the plurality of nozzles and the circulating water pipe. The water outlets are connected 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 fixed to the outer cylinder through the mounting bracket.

In a preferred technical solution of the above spraying system, the plurality of nozzles are disposed at equal intervals around the axis of the outer cylinder.

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

Those skilled in the art can understand that, in a preferred technical solution of the present invention, by setting each nozzle so that its position height in the vertical direction is greater than the height of the bottom of the outer cylinder mouth edge of the outer cylinder, it is possible to Effectively avoid the situation that the washing water in the outer tub submerged the nozzles, so that each nozzle can work normally when the drum washing machine is working. Further, by setting the nozzle in the above-mentioned situation, it is possible to avoid the situation where the nozzle with a lower position catches the clothes as much as possible, and it is convenient for the user to put the clothes in or take out the clothes from the inner drum.

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;

7 is a rear view of an outer cylinder portion of the present invention;

Fig. 8 is a sectional view taken along the C-C direction in Fig. 6.

List of reference signs:

1. Box body; 2. Outer tube; 3. Inner tube; 4. Door body; 5. Sealed window pad; 51. Semi-circular structure; 6. Counterweight; 7. Outlet pipe; 8. Circulating pump; 9. Drainage Pipe; 10, circulating water pipe; 11, annular cavity; 12, nozzle.

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, the outer cylinder of the drum washing machine of the present invention is not limited to the horizontal arrangement shown in the drawings, and the outer cylinder of the drum washing machine of the present invention may also be arranged obliquely. Those skilled in the art can adjust it as needed to suit specific applications. The adjusted technical 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 (not shown in the figure) 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 FIG. 3 and FIG. 8, the annular cavity 11 is provided with a water inlet and a plurality of water outlets. The inlet of the annular cavity 11 communicates with the end (outlet end) of the circulating water pipe 10 away from the circulating pump 8. A nozzle 12 is connected to each water outlet. 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 FIG. 1, FIG. 4 to FIG. 8, a plurality of nozzles 12 are arranged on the sealing window pad 5 at equal intervals along the circumferential direction of the sealing window pad 5, and the spraying port of each nozzle 12 is directed to the inner cylinder 3. So that multiple nozzles 12 can collectively provide a uniform water flow to the inner cylinder 3 (as shown in FIG. 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. Further, those skilled in the art can also set a plurality of nozzles 12 at any position near the front end of the outer cylinder 2 according to needs, for example, at the edge of the outer cylinder mouth or on the door body 4.

In a preferred embodiment of the present invention, the height of each nozzle 12 in the vertical direction is greater than the height of the bottom of the outer cylinder mouth edge of the outer cylinder 2 in order to prevent the detergent 12 from flooding the nozzle 12 in the outer cylinder 2. Those skilled in the art should know that, in general, the height of the washing water in the outer cylinder 2 is not higher than the edge of the outer cylinder mouth. The details are described below.

As shown in FIG. 1, the six nozzles 12 are arranged symmetrically with respect to the vertical direction. Or a person skilled in the art can also make the six nozzles 12 not symmetrically arranged with respect to the vertical direction according to needs.

As shown in FIGS. 7 and 8, the inner diameter of the outer tube 2 is d. There is a vertical distance H between the (two) nozzles 12 having the lowest position height among the six nozzles 12 and the lowest point of the inner wall of the outer cylinder 2. Preferably, H / d <0.5; more preferably, H / d <0.25; even more preferably, H / d = 0.1.

In addition, those skilled in the art can also set the ratio of the vertical distance H to the inner diameter d of the outer cylinder to any other feasible value, such as 0.05, 0.2, 0.4, 0.5, 0.6, 0.7, etc., as needed. As long as the height of the position of each nozzle 12 is higher than the bottommost height of the outer cylinder mouth edge of the outer tub 2 when the drum washing machine is in operation, it is particularly higher than the normal liquid level of the washing liquid in the outer tub 2.

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 semi-annular structures 51 corresponding to the number of the nozzles 12 are provided inside the sealing window pad 5. The semi-annular structure 51 is arranged around the through hole, so that each semi-annular structure 51 can surround one nozzle 12 respectively, preventing the nozzle 12 from catching clothes. Those skilled in the art can understand that the semi-annular 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.

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, in the present invention, by setting each nozzle 12 so that its height in the vertical direction is greater than the liquid level of the washing water in the outer cylinder 2, the situation that the washing water in the outer cylinder 2 floods the nozzle 12 is avoided, so that Each of the nozzles 12 can work normally when the drum washing machine is working, and at the same time, the situation where the lower nozzle 12 is caught by the clothes is avoided, and the user can put the clothes in or take out the clothes from the inner drum.

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, and an inner tube rotatably disposed in the outer tube,

It is characterized in that the spraying system includes a circulating pump, a circulating water pipe and a plurality of nozzles;

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 through the circulation water pipe, respectively, and the circulation pump is used to pump the washing water in the outer cylinder Sent to the plurality of nozzles;

The plurality of nozzles are disposed near the front end of the outer cylinder, and the ejection port of each of the nozzles is directed to the inner cylinder;

Wherein, the position height of each of the nozzles in the vertical direction is greater than the height of the bottom of the outer cylinder mouth edge of the outer cylinder.
The spraying system of a drum washing machine according to claim 1, wherein a vertical distance between the lowest position height of the plurality of nozzles and the lowest position of the inner side wall of the outer cylinder is provided, and the vertical The ratio of the straight distance to the inner diameter of the outer cylinder is less than 0.5.
The spray system of the drum washing machine according to claim 2, wherein a ratio of the vertical distance to an inner diameter of the outer tub is less than 0.25.
The spray system of the drum washing machine according to claim 3, wherein a ratio of the vertical distance to an inner diameter of the outer tub is equal to 0.1.
The spray system of the drum washing machine according to any one of claims 1 to 4, wherein the plurality of nozzles are provided on a sealed window pad of the drum washing machine, and the sealed window pad is provided on the Between the box and the outer tube.
The spray system of the drum washing machine according to claim 5, wherein the spray system further comprises a plurality of semi-annular structures which are fixed together or integrated with the sealed window pad, and each of the semi-circular structures Ring structures are respectively arranged around one of the nozzles.
The spraying system of the drum washing machine according to any one of claims 1 to 4, wherein the spraying system further comprises an annular cavity connected to or integrated with the plurality of nozzles, and the annular shape The cavity is in communication with the plurality of nozzles and the water outlet end of the circulating water pipe, respectively.
The spraying system of a drum washing machine according to claim 7, wherein a mounting bracket is provided on the annular cavity, and the annular cavity is fixed to the outer cylinder through the mounting bracket.
The spray system of the drum washing machine according to any one of claims 1 to 4, wherein the plurality of nozzles are arranged at equal intervals around the axis of the outer tub.
A drum washing machine, characterized in that the drum washing machine comprises the spray system according to any one of claims 1 to 9.