CN110387704A - 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 comprises a box body, an outer cylinder fixedly arranged in the box body, an inner cylinder rotatably arranged in the outer cylinder, a sealing window gasket connected between the box body and the outer cylinder, and a spray system. The spray system includes a circulation pump, an outlet pipe and multiple nozzles; the circulation pump is set on the tank or the outer cylinder, the water inlet of the circulation pump leads to the outer cylinder, and the outlet of the circulation pump is connected to multiple nozzles through the outlet pipe respectively A plurality of nozzles are arranged on the sealing window pad. During operation, the circulation pump pumps the washing water in the outer cylinder to the plurality of nozzles, and the plurality of nozzles spray the washing water into the inner cylinder. The invention not only has a simple installation structure of the nozzle, but also 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 driving 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 body, an outer cylinder fixedly arranged in the box body, an inner cylinder rotatably arranged in the outer cylinder, and a cylinder connected between the box body and the outer cylinder Sealing window pads, the spray system includes a circulation pump, a water outlet pipe 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 water outlet through the water outlet pipe. The plurality of nozzles are connected; the plurality of nozzles are all arranged on the sealing window gasket. When working, the circulation pump pumps the washing water in the outer cylinder to the plurality of nozzles, and the plurality of nozzles will wash the Water is sprayed into the inner barrel.

In a preferred technical solution of the above spraying system, the water outlet end of each nozzle is arranged in a flat structure.

In a preferred technical solution of the above sprinkler system, the flat structure includes a trumpet-shaped flat structure or a figure-eight flat structure.

In a preferred technical solution of the above sprinkler system, the plurality of nozzles all pass through the sealing window gasket and are sealingly connected with the sealing window gasket.

In a preferred technical solution of the above spraying system, the plurality of nozzles are arranged at equal intervals along the circumference of the sealing window gasket.

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

In a preferred technical solution of the above sprinkler system, the water outlet pipe includes an annular portion, and each nozzle is connected to the annular portion.

In the preferred technical solution of the above-mentioned spraying system, the water outlet of the circulation pump is also connected with the drain pipe of the drum washing machine; the water outlet pipe is configured with a first stop for selectively opening or closing the water outlet pipe A valve; the drain pipe is provided with a second stop valve for selectively opening or closing the drain pipe.

In a preferred technical solution of the above sprinkler system, the sprinkler system further includes a three-way valve, and the water outlet of the circulation pump is selectively communicated with the water outlet pipe or the drain pipe by means of the three-way valve.

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, the drum washing machine of the present invention is compared with the drum washing machine disclosed in the patent document with the publication number CN102482834B by arranging the nozzle on the sealing window pad. Not only is the installation structure of the nozzle simpler, but also the structure of the outer cylinder does not need to be modified. A separate design of production molds and manufacturing processes for the outer cylinder is avoided, and the manufacturing cost of the outer cylinder is reduced.

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 an enlarged view of part A in Fig. 1;

Fig. 3 is a schematic structural view of an outer cylinder 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.

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 left side of casing 1 in Fig. 1) is provided with casing mouth (not marked in the figure), the front end of outer cylinder 2 (left 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 left 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 and a plurality of nozzles 10 . 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 . 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 into the inner cylinder 3 for washing clothing. 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 sealing window gasket 5 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 sealing window gasket 5 at unequal intervals as required. Wherein, all nozzles 10 pass through the sealing window gasket 5, and are all sealed and connected with the sealing window gasket 5, so as to prevent the washing water in the outer tub 2 from leaking. At the same time, the connection between the nozzle 10 and the sealing window gasket 5 can also play a positioning role for the nozzle 10 .

Although not explicitly shown in the figure, in the first embodiment of the present invention, the water outlet pipe 9 includes a ring portion that flexibly surrounds the outside of the sealing window gasket 5 to connect 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 sealing window gasket 5 . 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 FIGS. 1 to 3 , the water outlet of each nozzle 10 points to the inner tube 3 so that the water sprayed from the nozzle 10 can fall into the inner tube 3 to spray the clothes.

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. As shown in FIG. 2 and FIG. 3 , the water outlet end of each nozzle 10 is arranged in a flat structure, and the flat structure is preferably a trumpet-shaped flat structure or a figure-eight flat structure. In other words, the water outlet ends of the nozzles 10 are all set such that the cross section of the water outlet ends gradually becomes longer along the washing water flow direction, and those skilled in the art can selectively make the width of the cross section gradually smaller according to needs.

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 water outlet end of the nozzle 10 into any other feasible shape, such as honeycomb shape, round hole shape, triangular shape, etc. shape.

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.

In summary, the spraying system of the present invention ensures that the clothes in the inner cylinder 3 are effectively sprayed, and the nozzles 10 are arranged on the sealing window gasket 5, which not only facilitates the installation structure, but also makes the outer cylinder 2. The original structure is kept, and the production cost of the drum washing machine is reduced.

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, the drum washing machine comprises a casing, an outer cylinder fixedly arranged in the casing, an inner cylinder rotatably arranged in the outer cylinder, and an inner cylinder connected to the a sealing window gasket between the box body and the outer cylinder, It is characterized in that the spraying system includes a circulation pump, a water outlet pipe 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; The plurality of nozzles are all arranged on the sealing window gasket. When working, the circulation pump pumps the washing water in the outer cylinder to the plurality of nozzles, and the plurality of nozzles spray the washing water into the inner cylinder. in the barrel. 2. The spray system for a drum washing machine according to claim 1, wherein the water outlet end of each nozzle is arranged in a flat structure. 3. The spray system for a drum washing machine according to claim 2, wherein the flat structure comprises a horn-shaped flat structure or a figure-eight flat structure. 4. The spray system for a drum washing machine according to any one of claims 1 to 3, wherein the plurality of nozzles all pass through the sealing window gasket and are sealingly connected with the sealing window gasket . 5. The spray system for a drum washing machine according to claim 4, wherein the plurality of nozzles are arranged at equal intervals along the circumference of the sealing window gasket. 6. The spray system for a drum washing machine according to any one of claims 1 to 3, wherein the outlet pipe comprises a plurality of branch pipes, and each nozzle is connected to one of the branch pipes road. 7. The spray system for a drum washing machine according to any one of claims 1 to 3, wherein the water outlet pipe comprises an annular portion, and each nozzle is connected to the annular portion. 8. The spray system for a drum washing machine according to any one of claims 1 to 3, wherein the water outlet of the circulating pump is also connected to the drain pipe of the drum washing machine; The water outlet pipe is configured with a first shut-off valve for selectively opening or closing the water outlet pipe; the drain pipe is configured with a second shut-off valve for selectively opening or closing the drain pipe. 9. The spray system for a drum washing machine according to any one of claims 1 to 3, characterized in that, the spray system further comprises a three-way valve, and the water outlet of the circulating pump is connected by the three-way valve. The through valve is selectively communicated with the water outlet pipe or the drain pipe. 10. A drum washing machine, characterized in that the drum washing machine comprises the spray system according to any one of claims 1-9.