CN110387701A - Drum washing machine and its spray system - Google Patents

Abstract

The invention belongs to the field of household appliances, and specifically provides a drum washing machine and a spraying system thereof. The invention aims to solve the problems of complicated installation structure and high production cost of the spraying device of the existing drum washing machine with the circulation spraying function. The drum washing machine of the present invention includes a box body, an outer cylinder and an inner cylinder arranged sequentially from outside to inside, and the spray system includes a circulation pump, a water outlet pipe, a waterfall generating structure and a plurality of nozzles; the circulation pump is arranged on the box body or the outer cylinder , the water inlet of the circulating pump leads to the outer cylinder, and the water outlet of the circulating pump is connected to multiple nozzles through the outlet pipe; the waterfall generating structure and multiple nozzles are arranged near the front end of the outer cylinder; The washing water is pumped to the nozzle, and the nozzle sprays the washing water to the structure of the waterfall and then reflects it into the inner cylinder. The invention maintains the original structure of the outer cylinder, and the manufacturing cost is lower.

Description

Drum washing machine and its spray system

technical field

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

Background technique

The existing drum washing machine originates from Europe, and it mainly includes a casing, an outer cylinder and an inner cylinder from the outside to the inside. A front-loading washing machine works in a similar way to hitting clothes with a hammer. When working, the inner cylinder rotates under the drive of the drive motor. With the rotation of the inner cylinder, the clothes are continuously lifted and dropped in the drum, and then lifted and dropped again, doing repeated motions. Under the joint action of washing powder and water, the clothes are washed clean.

In order to improve the effect of washing and rinsing clothes with water, some drum washing machines are also provided with a circulating spray device. For example, the drum type washing machine disclosed in the patent literature with the publication number CN102482834B is provided with a circulation path, 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 bottom end of the water tank opening. Multiple jets on the edge. The circulation path can supply the washing water from the bottom end of the water tank to the plurality of spray outlets, and then spray it into the drum (inner cylinder) to perform circular washing on the clothes.

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

Correspondingly, a new drum washing machine is needed in the art to solve the above problems.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problems of complex installation structure and high production cost of the spraying device of the existing drum washing machine with circulation spraying function, the present invention provides a spraying device for the drum washing machine. A shower system, the drum washing machine includes a box, an outer cylinder and an inner cylinder arranged in sequence from the outside to the inside, the spray system includes a circulation pump, an outlet pipe, a waterfall generating structure and a plurality of nozzles; the inlet of the circulation pump The water outlet leads into the outer cylinder, and the water outlet of the circulating pump is respectively connected to the plurality of nozzles through the outlet pipe; the waterfall generating structure and the plurality of nozzles are all arranged at the front end of the outer cylinder When working, the circulating pump pumps the washing water in the outer cylinder to the nozzle, and the nozzle sprays the washing water to the waterfall generating structure and then reflects it into the inner cylinder.

In a preferred technical solution of the above spraying system, the waterfall generating structure is a waterfall generating groove formed inside the door body of the drum washing machine.

In a preferred technical solution of the above sprinkler system, there are multiple waterfall generating grooves, and each waterfall generating groove corresponds to one nozzle.

In a preferred technical solution of the above sprinkler system, there are multiple waterfall generation baffles, and each waterfall generation baffle corresponds to one nozzle.

In the preferred technical solution of the above-mentioned spraying system, the drum washing machine further includes a sealing window gasket connected between the box body and the outer cylinder, and the waterfall generating structure is a waterfall arranged on the sealing window gasket. A baffle occurs.

In a preferred technical solution of the above sprinkler system, there are multiple waterfall generation baffles, and each waterfall generation baffle corresponds to one nozzle.

In a preferred technical solution of the above spraying system, the plurality of nozzles are arranged on the front end wall of the outer cylinder and arranged at equal intervals along the circumference of the front end wall of the outer cylinder.

In a preferred technical solution of the above sprinkler system, the outlet pipe includes a plurality of branch pipes, and each of the nozzles is connected to one of the branch pipes.

In addition, the present invention also provides a drum washing machine, which includes the spray system described in any one of the preferred technical solutions of the above spray system.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, by arranging the nozzle on the front end wall of the outer cylinder, by setting a waterfall generating structure at the front end of the outer cylinder, the washing water sprayed from the nozzle can pass through the waterfall. A reflection of the structure into the inner barrel occurs. Therefore, the nozzle and the waterfall generating structure of the present invention can be used together to produce a water jet effect. Compared with the drum type washing machine disclosed in the patent document with the publication number CN102482834B, there is no need to form a circulating water path on the outer cylinder, and the original structure of the outer cylinder is retained. There is structure. Not only is the installation structure of the nozzle and/or the waterfall generating structure simple, but it also avoids separately designing a production mold and manufacturing process for the outer cylinder, thereby reducing the manufacturing cost of the outer cylinder.

Description of drawings

Describe preferred embodiment of the present invention below with reference to accompanying drawing, in the accompanying drawing:

Fig. 1 is the sectional view of drum washing machine of the present invention;

Fig. 2 is the first example of the cascade generation structure of the present invention;

Fig. 3 is the second example of the waterfall generation structure of the present invention;

Fig. 4 is a schematic diagram of the spraying effect of the drum washing machine of the present invention.

List of reference signs:

1. Box body; 2. Outer cylinder; 3. Inner cylinder; 4. Door body; 5. Sealing window mat; 6. Drainage pump; 7. Drainage pipe; 8. Circulation pump; 9. Outlet pipe; 10. Nozzle; 11. Waterfall generating structure; 111. Waterfall generating groove; 112. Waterfall generating baffle.

Detailed ways

Those skilled in the art should understand that the embodiments in this section are only used to explain the technical principle of the present invention, and are not used to limit the protection scope of the present invention. For example, although the present invention is described as a nozzle having a flat structure, the nozzle of the present invention may also be a nozzle of any other structural form. Those skilled in the art can make adjustments as needed so as to adapt to specific application occasions, and the adjusted technical solution will still fall within the protection scope of the present invention.

It should also be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

As shown in FIG. 1 , the drum washing machine of the present invention mainly includes a casing 1 , an outer cylinder 2 , an inner cylinder 3 , a door body 4 , a sealing window gasket 5 , a drain pump 6 and a drain pipe 7 . Wherein, the outer cylinder 2 is fixedly arranged in the box body 1 , the inner cylinder 3 is rotatably arranged in the outer cylinder 2 , and the sealing window gasket 5 is arranged between the box body 1 and the outer cylinder 2 . The drain pump 6 and the drain pipe 7 are all arranged in the casing 1, and the water inlet of the drain pump 6 leads to the inner bottom of the outer cylinder 2, the water outlet of the drain pump 6 is connected with one end of the drain pipe 7, and the other end of the drain pipe 7 One end leads to the outside world. The drain pump 6 can drain the washing water in the tub 2 through the drain pipe 7 .

In addition, those skilled in the art can understand that, when every part of the drain pipe 7 is lower than the inner bottom of the outer cylinder 2, those skilled in the art can also omit the drain pump 6 and replace the drain pump 6 as required. Replace with shut-off valve. When the drum washing machine needs to be drained, the stop valve is opened, so that the washing water in the outer cylinder 2 is automatically discharged from the drain pipe 7 under the action of its own gravity.

Continue to refer to Fig. 1, the front end of casing 1 (the right side of casing 1 in Fig. 1) is provided with casing opening (not marked in the figure), the front end of outer cylinder 2 (right side of outer casing 2 in Fig. 1) is provided with The outer cylinder mouth (not marked 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 an inner cylinder mouth (not marked in the figure). One end of the sealing window gasket 5 is sealingly connected with the edge of the outer cylinder opening, and the other end of the sealing window gasket 5 is sealingly connected with the edge of the inner cylinder opening. The door body 4 is pivotally arranged on the box body 1, and when the door body 4 is closed, it can close the box body opening, preventing the washing water in the outer cylinder 2 from overflowing from the box body opening.

Continuing to refer to FIG. 1 , the drum washing machine of the present invention further includes a spray system, which mainly includes a circulation pump 8 , a water outlet pipe 9 , multiple nozzles 10 and a waterfall generating structure 11 . Wherein, the circulation pump 8 is preferably arranged in the tank body 1 and fixedly connected with the tank body 1 . Or those skilled in the art can also make the circulation pump 8 fixedly connected with the outer cylinder 1 according to the needs. The water inlet of the circulation pump 8 leads to the inside of the outer cylinder 2 , preferably, the water inlet of the circulation pump 8 is connected to the bottom end of the outer cylinder 2 through a water inlet pipe. Or those skilled in the art can also connect the water inlet pipe to any position of the outer cylinder 2 under the condition that the water inlet pipe is located below the liquid level in the outer cylinder 2 as required. The water outlet of the circulation pump 8 communicates with a plurality of nozzles 10 through a water outlet pipe 9 . A plurality of nozzles 10 and a waterfall generating structure 11 are arranged at the front end of the outer cylinder 2 and attached. When the spraying system of the present invention works, as shown by the arrow in Figure 1, the circulation pump 8 pumps the washing water in the outer cylinder 2 to a plurality of nozzles 10, and the plurality of nozzles 10 spray the washing water to the waterfall generating structure 11. Reflected into the inner tub 3 to wash the clothes. When the inner cylinder 3 is running at a high speed, the water sprayed from the nozzle 10 can quickly pass through the clothes and enter the outer cylinder 2 under the action of centrifugal force and gravity.

As shown in FIGS. 1 to 3 , a plurality of nozzles 10 are arranged on the front end wall of the tub 2 at equal intervals around the circumference of the tub 2 . Alternatively, those skilled in the art can also arrange a plurality of nozzles 10 on the front end wall of the outer cylinder 2 at unequal intervals as required. Wherein, the plurality of nozzles 10 may be arranged around the circumference of the tub 2 once, twice or any other feasible number of turns. Further, those skilled in the art can also arrange a plurality of nozzles 10 at any position near the front end of the outer cylinder 2 as required, for example, a plurality of nozzles 10 are arranged on the inner side of the door body 4, or a plurality of nozzles 12 are arranged at the mouth of the outer cylinder at the edge.

Although not explicitly shown in the figure, in the first embodiment of the present invention, the outlet pipe 9 includes an annular portion that flexibly surrounds the outside of the outer cylinder 2 so as to be connected with all the nozzles 10 . In the second embodiment of the present invention, the water outlet pipe 9 includes a plurality of branch pipes (not shown in the figure), and each nozzle 10 is connected to a branch pipe. Moreover, each branch pipeline is a flexible pipeline so that all the nozzles 10 can adapt to the vibration of the outer cylinder 2 . In addition, those skilled in the art can also make the inner diameter of the branch pipeline far away from the circulation pump 8 larger than the inner diameter of the branch pipeline close to the circulation pump 8 so as to make the water flows sprayed by all the nozzles 10 substantially the same size.

As shown in FIG. 2 , as an example one, the waterfall generating structure 11 is a waterfall generating groove 111 formed inside the door body 4 . Preferably, there are multiple waterfall generating grooves 111 , so that each nozzle 10 can correspond to one waterfall generating groove 111 . Or those skilled in the art can arrange the waterfall generating tank 111 as required, so that the water outlets of all the nozzles 10 are directed to the annular waterfall generating tank 111, so that the washing water sprayed from the nozzles 10 is drawn by the waterfall generating tank 111. After reflection, it falls into the inner tube 3 and sprays the clothes.

As shown in FIG. 3 , as a second example, the waterfall generating structure 11 is a waterfall generating baffle 112 arranged at the edge of the outer cylinder mouth. Preferably, there are multiple waterfall generating baffles 112 , so that each nozzle 10 can correspond to one waterfall generating baffle 112 . Or those skilled in the art can set the waterfall generation baffle 112 as required, so that the outlets of all nozzles 10 are directed to the annular waterfall generation baffle 112, so that the washing water sprayed from the nozzles 10 is generated by the waterfall. The baffle plate 112 falls into the inner cylinder 3 after reflection, and sprays the clothes. In addition, in another feasible embodiment of the present invention, those skilled in the art can arrange the waterfall generating baffle 112 on the sealing window gasket 5 or arrange the waterfall generating baffle 112 on the inner side of the door body 4 as required. .

As shown in FIG. 4 , in order to improve the spraying effect of the spraying system on the clothes in the inner tube 3 , each nozzle 10 is configured to spray fan-like water flow or waterfall-like water flow. The waterfall generating groove 111 in the above example 1 is arranged in an arcuate structure, and the waterfall generating baffle 112 in the above example 2 is also arranged in an arcuate structure.

In addition, under the premise of ensuring that the clothes in the inner cylinder 3 can be sprayed, those skilled in the art can set the waterfall generating groove 111 and the waterfall generating baffle 112 into any other feasible shape as required, for example, a circular arc surface structure, elliptical arc surface structure, conical surface structure, planar structure, etc.

It should be noted that the drainage pump 6 and/or circulation pump 8 of the present invention may be any feasible pump, for example, a gear pump, a vane pump, a peristaltic pump, a centrifugal pump, and the like.

Those skilled in the art can understand that, in another feasible embodiment of the present invention, the drainage pump 6 and the circulation pump 8 can be replaced by one pump. As an example one, the drainage pump 6 is omitted, the water outlet of the circulation pump 8 is communicated with the water outlet pipe 9 and the drain pipe 7 respectively, and the first shut-off valve for selectively opening or closing the water outlet pipe 9 is configured as The drain pipe 7 is configured with a second stop valve for selectively opening or closing it. When the drum washing machine performs the spraying operation, the first shut-off valve is opened and the second shut-off valve is closed; when the drum washing machine performs the drainage operation, the first shut-off valve is closed and the second shut-off valve is opened. As a second example, the drainage pump 6 is omitted, and a three-way valve is configured for the water outlet of the circulation pump 8, so that the water outlet of the circulation pump 8 can be selectively communicated with the water outlet pipe 9 or the drain pipe 7 by means of the three-way valve. In addition, those skilled in the art can also make the three-way valve block the communication between the circulation pump 8 and the water outlet pipe 9 and the communication between the circulation pump 8 and the drain pipe 7 at the same time as required.

To sum up, in the present invention, the cooperation of the nozzle 10 and the waterfall generating structure 11 can generate fan-shaped/waterfall water flow, which is sprayed into the inner tube 3 to spray clothes. Therefore, the present invention not only has a simple installation structure for the nozzle 10 and/or the waterfall generating structure 11, but also avoids separately designing a production mold and manufacturing process for the outer cylinder, thereby reducing the manufacturing cost of the outer cylinder.

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings, but those skilled in the art will easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims (10)

1. A spray system for a drum washing machine, said drum washing machine comprising a casing, an outer cylinder and an inner cylinder arranged sequentially from the outside to the inside, It is characterized in that the spraying system includes a circulating pump, a water outlet pipe, a waterfall generating structure and a plurality of nozzles; The water inlet of the circulation pump leads into the outer cylinder, and the water outlet of the circulation pump is respectively connected to the plurality of nozzles through the water outlet pipe; Both the waterfall generating structure and the plurality of nozzles are arranged near the front end of the outer cylinder; When working, the circulation pump pumps the washing water in the outer cylinder to the nozzle, and the nozzle sprays the washing water to the waterfall generating structure and then reflects it into the inner cylinder. 2 . The spray system for a drum washing machine according to claim 1 , wherein the waterfall generating structure is a waterfall generating groove formed inside a door body of the drum washing machine. 3 . 3. The spray system for a drum washing machine according to claim 2, wherein there are multiple waterfall generating grooves, and each waterfall generating groove corresponds to one nozzle. 4. The spray system for a drum washing machine according to claim 1, wherein the waterfall generating structure is a waterfall generating baffle arranged at the edge of the outer cylinder mouth. 5 . The spray system for a drum washing machine according to claim 4 , wherein there are multiple waterfall generating baffles, and each of the waterfall generating baffles corresponds to one of the nozzles. 6. The spray system for the drum washing machine according to claim 1, characterized in that, the drum washing machine further comprises a sealing window gasket connected between the box body and the outer cylinder, and the waterfall occurs The structure is a waterfall generation baffle arranged on the sealing window gasket. 7. The spray system for a drum washing machine according to claim 6, wherein there are a plurality of said waterfall generating baffles, and each of said waterfall generating baffles corresponds to one of said nozzles. 8. The spray system for a drum washing machine according to any one of claims 1 to 7, wherein the plurality of nozzles are arranged on the front end wall of the outer cylinder and along the front end of the outer cylinder The walls are arranged at equal intervals in the circumferential direction. 9. The spray system for a drum washing machine according to any one of claims 1 to 7, wherein the outlet pipe comprises a plurality of branch pipes, each of the nozzles is connected to a Described branch pipeline. 10. A drum washing machine, characterized in that the drum washing machine comprises the spray system according to any one of claims 1-9.