JP2021526418A - Drum washing machine and its spray system - Google Patents

Abstract

The present invention is a drum washing machine and its spray system. The spray system includes a circulation pump (8), a circulation water pipe (10), and a plurality of nozzles (12), and the water supply port of the circulation pump is an outer cylinder. (2) The outlet of the circulation pump communicates with a plurality of nozzles via a circulation water pipe, the circulation pump pumps the washing water in the outer cylinder to the plurality of nozzles, and the plurality of nozzles eventually Is provided near the tip of the outer cylinder, and the injection port of each nozzle is directed toward the inner cylinder, and the position height of each nozzle in the vertical direction is the height of the bottom of the outer cylinder mouth peripheral edge of the outer cylinder. Higher than that. The drum washing machine of the present invention can effectively prevent the nozzles from being submerged by the washing water in the outer cylinder, and each of the nozzles operates normally when the drum washing machine is operated.

Description

The present invention relates to the technical field of clothing processing equipment, and specifically provides a drum washing machine and a spray system thereof.

A conventional drum washing machine has its origin in Europe and has a housing, an outer cylinder, and an inner cylinder mainly from the outside to the inside. The operating method of the drum washing machine is similar to the principle of tapping clothes with a mallet. During operation, the inner cylinder rotates under the drive of a drive motor. With the rotation of the inner cylinder, the garment is continuously lifted and dropped on the drum, then further lifted and dropped, and such a movement is repeated. Clothes are washed by the joint action of detergent and water.

Some drum washing machines are also equipped with a circulating spray device to enhance the effectiveness of washing and rinsing clothes. The drum washing machine disclosed in the patent document of publication number CN204982446U includes an airframe, a drum, and a water receiving tank in the above order from the outside to the inside. Of these, the receiving tank is provided with a water receiving tank frame, and the receiving tank frame has a spray hole for injecting a water flow into the drum and a guide mechanism for guiding the jet water flow so as to diffuse in the circumferential direction. Is provided. After the water column coming out of the spray hole is sprayed on the guide mechanism, its width is expanded, and the water column is adjusted to a fan shape and sprayed on the inner cylinder.

The drum washing machine disclosed in the patent document of publication number CN204982446U has a strong washing ability for clothes, but its spray holes and guide structure are complicated, and the production cost is high. Further, one spray hole having the lowest position may be submerged by the washing water in the outer cylinder, and the washing water may not be sprayed normally.

Correspondingly, in order to solve the above problems, a new drum washing machine and its spray system are required in this field.

In order to solve the above problem in the prior art, that is, in a drum washing machine having a conventional circulation spray function, the problem that the lowest position spray hole is easily submerged by the washing water in the outer cylinder and cannot operate normally is solved. To solve the problem, the present invention provides a spray system for a drum washing machine, wherein the drum washing machine can rotate to a housing, an outer cylinder fixedly provided on the housing, and the outer cylinder. The spray system includes a circulation pump, a circulation water pipe, and a plurality of nozzles, the water supply port of the circulation pump is connected to the inside of the outer cylinder, and the circulation pump is discharged. The water outlet communicates with the plurality of nozzles via the circulation water pipe, the circulation pump pumps the washing water in the outer cylinder to the plurality of nozzles, and all of the plurality of nozzles are in the vicinity of the tip of the outer cylinder. The injection port of each of the nozzles is directed toward the inner cylinder, and the position height of each of the nozzles in the vertical direction is higher than the height of the bottom of the outer cylinder mouth peripheral edge of the outer cylinder. ..

In a preferred embodiment of the spray system, a vertical distance is provided between one of the plurality of nozzles having the lowest position height and the lowest portion of the inner wall of the outer cylinder, and the vertical distance and the inner diameter of the outer cylinder are provided. The ratio with and is less than 0.5.

In a preferred embodiment of the spray system, the ratio of the vertical distance to the inner diameter of the outer cylinder is less than 0.25.

In a preferred embodiment of the spray system, the ratio of the vertical distance to the inner diameter of the outer cylinder is 0.1.

In a preferred embodiment of the spray system, the plurality of nozzles are all provided in the window packing of the drum washing machine, and the window packing is provided between the housing and the outer cylinder.

In a preferred embodiment of the spray system, the spray system further comprises a plurality of semi-annular structures fixed to the window packing or integrally formed with the window packing, each of which is one of the semi-annular structures. It is provided around the nozzle.

In a preferred embodiment of the spray system, the spray system comprises an annular chamber connected to or integrally formed with the plurality of nozzles, wherein the annular chamber discharges water from the plurality of nozzles and the circulating water pipe. It communicates with each end.

In a preferred embodiment of the spray system, the annular chamber is provided with a mounting bracket, which is fixed to the outer cylinder via the mounting bracket.

In a preferred embodiment of the spray system, the plurality of nozzles are provided at equal intervals around the axis of the outer cylinder.

The present invention further provides a drum washing machine including the spray system according to any one of the preferred embodiments of the spray system.

Those skilled in the art can understand that, in a preferred embodiment of the present invention, each nozzle is provided in the outer cylinder so that the position height in the vertical direction is larger than the height of the bottommost portion of the outer cylinder mouth peripheral edge of the outer cylinder. It is possible to effectively prevent the nozzles from being submerged by the washing water, and each of the nozzles operates normally when the drum washing machine is operated. Further, by installing the nozzles as described above, it is possible to prevent the nozzles having a low position from catching the clothes as much as possible, which is convenient for the user to put the clothes in and out of the inner cylinder.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

It is a front view of the drum washing machine of this invention.

It is sectional drawing in the AA direction of FIG.

It is sectional drawing in the BB direction of FIG.

It is a 1st side view of the outer cylinder part of this invention.

It is a 2nd side view of the outer cylinder part of this invention.

It is a front view of the outer cylinder part of this invention.

It is a rear view of the outer cylinder part of this invention.

It is sectional drawing in the CC direction of FIG.

Code description

1, housing 2, outer cylinder 3, inner cylinder 4, door body 5, window packing 51, semi-annular structure 6, weight 7, water discharge pipe 8, circulation pump 9, drain pipe 10, circulating water pipe 11, annular chamber 12, nozzle

Those skilled in the art should understand that the embodiments are used solely to illustrate the technical principles of the invention and are not intended to limit the scope of protection of the invention. For example, the outer cylinder of the drum washing machine of the present invention is not limited to the horizontal installation shown in the drawing, and the outer cylinder of the drum washing machine of the present invention may be installed at an angle. It can be adjusted as needed to do so, and the adjusted technical proposal still belongs to the scope of protection of the present invention.

In the description of the present invention, the terms "mounting", "communication", and "connection" should be understood in a broad sense unless otherwise explicitly specified or limited. For example, even if it is a fixed connection. It may be a removable connection, an integral connection, an indirect connection via an intermediate medium, or a communication inside the two elements. .. Those skilled in the art can understand the specific meanings of the above-mentioned terms in the present invention depending on the specific circumstances.

As shown in FIGS. 1 to 3, the drum washing machine of the present invention mainly includes a housing 1, an outer cylinder 2, an inner cylinder 3, a door body 4, a window packing 5, a weight 6, and a water pipe 7. , A circulation pump 8, a drain pipe 9, and a circulation water pipe 10 are provided. Of these, the outer cylinder 2 is fixedly provided in the housing 1, the inner cylinder 3 is rotatably provided in the outer cylinder 2, and the window packing 5 is provided between the housing 1 and the outer cylinder 2. There is. The weight 6 is attached to the outer cylinder 2 to increase the inertia of the outer cylinder 2 and reduce the swing width of the outer cylinder 2 when the inner cylinder 3 operates.

As shown in FIG. 3, the water discharge pipe 7, the circulation pump 8, the drain pipe 9, and the circulation water pipe 10 are all provided in the housing 1, and the circulation pump 8 is fixed to the housing 1 or requires a person skilled in the art. The circulation pump 8 may be fixed to the outer cylinder 2 according to the above. The circulation pump 8 includes one water supply port and two water outlets. Of these, the water supply port of the circulation pump 8 is connected to one end of the water discharge pipe 7, and the other end of the water discharge pipe 7 is connected to the bottom end of the outer cylinder 2, whereby the water supply port of the circulation pump 8 and the outer cylinder 2 communicate with each other. doing. One 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 connected to the outside world. The other outlet of the circulation pump 8 is connected to one end of the circulation water pipe 10, and the other end of the circulation water pipe 10 leads to the inside of the outer cylinder 2.

In a preferred embodiment of the present invention, the circulation pump 8 is a bidirectional rotary pump, and when the circulation pump 8 rotates in the normal direction, the circulation pump 8 pumps the washing water to the drain pipe 9, and the circulation pump 8 reverses. , The circulation pump 8 pumps the wash water to the circulation water pipe 10. Further, those skilled in the art may have only one water outlet for the circulation pump 8 and communicate this water outlet with the circulation water pipe 10 as necessary. Then, by arranging an individual water pump or stop valve in the drain pipe 9 and turning on the water pump or stop valve, the washing water in the drain pipe 7 flows to the drain pipe 9.

Referring to FIG. 3 continuously, a housing opening (not shown) is provided at the tip of the housing 1 (on the right side of the housing 1 in FIG. 3), and the tip of the outer cylinder 2 (in FIG. 3 shows the outer cylinder 2). An outer cylinder opening (not shown) is provided on the right side), and an inner cylinder opening (not shown) is provided on the tip of the inner cylinder 3 (on the right side of the inner cylinder 3 in FIG. 3). One end of the window packing 5 is airtightly connected to the edge of the housing opening, and the other end is airtightly connected to the peripheral edge of the outer cylinder opening. The door body 4 is pivotally provided in the housing 1, and the housing opening can be closed when the door body 4 is closed so as to prevent the washing water in the outer cylinder 2 from overflowing from the housing opening. ..

As shown in FIGS. 2 to 8, the drum washing machine of the present invention mainly includes a spray system including a circulation pump 8, a circulation water pipe 10, an annular chamber 11, and a plurality of nozzles 12. The circulation pump 8 is as described above. The annular chamber 11 is provided at the tip of the outer cylinder 2 and is fixedly connected to the outer cylinder 2 or the weight 6. In a preferred embodiment of the present invention, the annular chamber 11 is provided with a mounting bracket (not shown), and the annular chamber 11 is fixed to the outer cylinder 2 or the weight 6 via the mounting bracket. Those skilled in the art will understand that the mounting bracket may be fixed to the outer cylinder 2 or the weight 6 by any feasible connectable connecting means such as bolt fastening, screw connection, locking, plugging and the like.

As shown in FIGS. 3 and 8, the annular chamber 11 is provided with one water supply port and a plurality of water outlets, and is separated from the water supply port of the annular chamber 11 and the circulation pump 8 of the circulation water pipe 10. It communicates with one end (water outlet), and one nozzle 12 is connected to each of the outlets of the annular chamber 11. When the circulation pump 8 is reversed, the circulation pump 8 can pump the cleaning water to the plurality of nozzles 12 through the circulating water pipe 10, and then the nozzles 12 inject the cleaning water into the inner cylinder 3. Those skilled in the art will appreciate that the nozzle 12 may be connected to the annular chamber 11 by any feasible connecting means, eg, connected with the annular chamber 11 by integral injection molding, insert connection, screw connection, etc. It may be connected by a connecting means such as welding or ultrasonic soldering.

As shown in FIGS. 1, 4 to 8, a plurality of nozzles 12 are provided on the window packing 5 at equal intervals in the circumferential direction of the window packing 5, and each injection port of the nozzle 12 is provided in the inner cylinder 3. Oriented. Therefore, the plurality of nozzles 12 can cooperate with each other to supply 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 nozzles 12 may be any value, for example, 5, 6, 8, 9, or the like. Here, those skilled in the art may provide a plurality of nozzles 12 on the window packing 5 at non-equal intervals, if necessary. Further, those skilled in the art may provide a plurality of nozzles 12 at arbitrary positions near the tip of the outer cylinder 2, for example, on the periphery of the outer cylinder mouth or on the door body 4, if necessary.

In a preferred embodiment of the present invention, the position height of each of the nozzles 12 in the vertical direction is set to the maximum of the outer cylinder mouth peripheral edge of the outer cylinder 2 so as to prevent the nozzle 12 from being immersed in the detergent in the outer cylinder 2. Greater than the height of the bottom. One of ordinary skill in the art should know that the height of the wash water in the outer cylinder 2 is not higher than that of the outer cylinder mouth peripheral edge. Specifically, it is as follows.

As shown in FIG. 1, the six nozzles 12 are provided symmetrically with respect to the vertical direction. Alternatively, those skilled in the art may not provide the six nozzles 12 symmetrically with respect to the vertical direction, if necessary.

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

In addition, those skilled in the art may optionally set the ratio of the vertical distance H to the outer cylinder inner diameter d to any other feasible value, such as 0.05, 0.2, 0.4, 0.5, It may be 0.6, 0.7 or the like. When the drum washing machine is operated, the position height of each nozzle 12 is higher than the height of the bottom of the outer cylinder mouth peripheral edge of the outer cylinder 2, in particular, higher than the normal liquid level height of the detergent liquid in the outer cylinder 2. Should be guaranteed.

As shown in FIG. 8, the window packing 5 is provided with a plurality of through holes (not shown) corresponding to the number of nozzles 12, and the nozzles 12 and the window packing 5 are connected by interference cooperation. The diameter of each of the through holes is smaller than the diameter of the nozzle 12 so that the nozzle 12 and the window packing 5 can be sealed. Further, those skilled in the art may provide through holes on the window packing 5 in any other mounting hole, for example, a screw hole, a spline hole, a tapered hole, a polygonal hole, or the like, if necessary.

As shown in FIGS. 7 and 8, a plurality of semi-annular structures 51 corresponding to the number of nozzles 12 are provided inside the window packing 5. The semi-annular structure 51 is provided around the through hole so that each of the semi-annular structures 51 surrounds one nozzle 12 and prevents the nozzle 12 from catching clothing. Those skilled in the art can understand that the semi-annular structure 51 and the window packing 5 may be connected by any feasible connecting means, for example, by integral injection molding, welding, ultrasonic soldering, or the like. good.

As described above, in the drum washing machine of the present invention, by providing the nozzles 12 on the window packing 5 at equal intervals, not only the mounting structure of the nozzles 12 is simplified, but also the outer cylinder 2 is left as it is in the conventional structure. While reducing the production cost of the drum washing machine, it is also possible to supply the washing water of the annular spray as shown in FIG. 1 to the clothes in the inner cylinder 3. Further, in the present invention, by providing each of the nozzles 12 so that the position height in the vertical direction is larger than the liquid level height of the washing water in the outer cylinder 2, the nozzles are submerged by the washing water in the outer cylinder. By avoiding this, each of the nozzles can be operated normally when the drum washing machine is operated, and it is possible to prevent the nozzles having a low position from catching clothes, which is convenient for the user to put clothes in and out of the inner cylinder.

Further, in another feasible embodiment of the present invention, those skilled in the art can provide the nozzle 12 at an arbitrary feasible position as needed. As an example, a plurality of nozzles 12 are provided on the periphery of the outer cylinder mouth at equal intervals. As an example, a plurality of nozzles 12 are provided on the door body 4 at equal intervals.

In yet another feasible embodiment of the invention, one of ordinary skill in the art will optionally communicate a plurality of water pipes with each of the nozzles 12 individually communicating with the outlet of the circulation pump 8 via a single water pipe. May be provided.

The combination of the above embodiments of the present invention should also belong to the scope of protection of the present invention. Among them, this combination includes not only a combination of a plurality of complete embodiments but also a rational combination of some technical features in each embodiment.

Although the technical proposal of the present invention has now been described in conjunction with the preferred embodiments shown in the drawings, it will be readily appreciated by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Understood. One of ordinary skill in the art can make equivalent modifications or substitutions to the relevant technical features without departing from the principles of the invention, and any of these modifications or substitutions of the technical proposals will protect the invention. Included in the range.

Claims (10)

A spray system for a drum washing machine including a housing, an outer cylinder fixedly provided on the housing, and an inner cylinder rotatably provided on the outer cylinder.
The spray system includes a circulation pump, a circulating water pipe, and a plurality of nozzles.
The water supply port of the circulation pump communicates with the inside of the outer cylinder, the water outlet of the circulation pump communicates with the plurality of nozzles via the circulation water pipe, and the circulation pump uses the washing water in the outer cylinder. Pump to multiple nozzles
All of the plurality of nozzles are provided near the tip of the outer cylinder, and the injection port of each of the nozzles is directed to the inner cylinder.
Among them, the spray system of the drum washing machine is characterized in that the position height of each of the nozzles in the vertical direction is higher than the height of the bottommost portion of the outer cylinder mouth peripheral edge of the outer cylinder. A vertical distance is provided between one of the plurality of nozzles having the lowest position height and the lowest position of the inner wall of the outer cylinder, and the ratio of the vertical distance to the inner diameter of the outer cylinder is less than 0.5. The spray system for a drum washing machine according to claim 1, wherein the spray system is characterized in that. The spray system for a drum washing machine according to claim 2, wherein the ratio of the vertical distance to the inner diameter of the outer cylinder is less than 0.25. The spray system for a drum washing machine according to claim 3, wherein the ratio of the vertical distance to the inner diameter of the outer cylinder is 0.1. The plurality of nozzles are all provided in the window packing of the drum washing machine, and the window packing is provided between the housing and the outer cylinder, according to claims 1 to 4. The spray system for the drum washing machine according to any one item. The spray system further comprises a plurality of semi-annular structures fixed to the window packing or integrally formed with the window packing, each of which is provided around one nozzle. The spray system for a drum washing machine according to claim 5, wherein the spray system is characterized in that. The spray system further comprises an annular chamber connected to or integrally formed with the plurality of nozzles, the annular chamber communicating with the plurality of nozzles and the outlet of the circulating water pipe, respectively. The spray system for a drum washing machine according to any one of claims 1 to 4, wherein the spray system is provided. The spray system for a drum washing machine according to claim 7, wherein the annular chamber is provided with a mounting bracket, and the annular chamber is fixed to the outer cylinder via the mounting bracket. The spray system for a drum washing machine according to any one of claims 1 to 4, wherein the plurality of nozzles are provided at equal intervals around the axis of the outer cylinder. A drum washing machine comprising the spray system according to any one of claims 1 to 9.

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