CN110387713A - 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 spray system of the drum washing machine of the present invention comprises a circulation pump, a pressure equalizer, a plurality of branch pipes and a plurality of nozzles; the circulation pump and the pressure equalizer are all arranged on the casing, and the water inlet of the circulation pump leads into the outer cylinder, The water outlet of the circulation pump communicates with multiple nozzles through the pressure equalizer; each nozzle includes a water retaining structure arranged on its main body. When working, the circulation pump pumps the washing water in the outer cylinder to the pressure equalizer. The pressure equalizer distributes the washing water equally to each nozzle, and the nozzles spray the washing water into the inner cylinder in a waterfall through the water retaining structure. 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 low.

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 body, an outer cylinder fixedly arranged in the box body and an inner cylinder rotatably arranged in the outer cylinder, the spray system includes a circulation pump, a plurality of branch pipes 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 communicates with the water inlets of the plurality of branch pipes; the plurality of nozzles are all arranged in the outer cylinder near the front end of the nozzle, and each of the nozzles communicates with the circulation pump through one of the branch pipes; wherein, each of the nozzles includes a water retaining structure arranged on its main body, and when working, the circulation The pump pumps the washing water in the outer cylinder to the nozzle through the plurality of branch pipes, and the nozzle sprays the washing water into the inner cylinder in a waterfall through the water retaining structure.

In a preferred technical solution of the above sprinkler system, the water retaining structure is arranged at the water outlet end of the nozzle, and makes the water outlet of the nozzle flat.

In the preferred technical solution of the above spraying system, the main body of each of the nozzles is provided with a positioning structure, and the nozzles are fixed near the front end of the outer cylinder by means of the positioning structures, so that the exit of the nozzles The nozzle points to the inner cylinder.

In a preferred technical solution of the above sprinkler system, the positioning structure is a positioning protrusion provided on the main body.

In a preferred technical solution of the above sprinkler system, the plurality of nozzles are all arranged on a sealing window gasket, wherein the sealing window gasket is arranged between the box body and the outer cylinder.

In the preferred technical solution of the above-mentioned spraying system, the plurality of nozzles pass through the sealing window pad and are sealingly connected with the sealing window pad; and/or, the plurality of nozzles are along the sealing window pad Circumferential equidistant setting.

In the preferred technical solution of the above sprinkler system, the sprinkler system further includes a pressure equalizer, the pressure equalizer is arranged on the tank or the outer cylinder and includes a water inlet and a plurality of water outlets, The water outlet of the circulation pump communicates with the water inlet of the pressure equalizer, and each of the nozzles communicates with a water outlet of the pressure equalizer through a branch pipe.

In a preferred technical solution of the above spraying system, the spraying system further includes a water outlet pipe, and the two ends of the water outlet pipe communicate with the water outlet of the circulation pump and the water inlet of the pressure equalizer respectively.

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, and the water outlet pipe is configured with a first stop for selectively opening or closing the water outlet pipe. valve, the drain pipe is configured with a second cut-off valve for selectively opening or closing the drain pipe; and/or the sprinkler system further includes a three-way valve, and the water outlet of the circulating pump is The through valve is selectively communicated with the water outlet pipe or the drain pipe.

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. Further, the present invention also distributes the washing water pumped by the circulation pump to each nozzle equally through the pressure equalizer arranged between the circulation pump and a plurality of nozzles, so that all the nozzles can form an annular water curtain spray The shower effect, so that the clothes in the inner cylinder can be sprayed better, and the washing effect of the washing machine is optimized.

Wherein, the water outlet end of each nozzle is provided with a water retaining structure, so that the water outlet of the nozzle forms a flat shape, so that the nozzle sprays the washing water in a waterfall.

Description of drawings

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

Fig. 1 is the internal structural diagram of drum washing machine of the present invention;

Fig. 2 is a sectional view along the A-A direction of Fig. 1;

Fig. 3 is an enlarged view of part B in Fig. 2;

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

Figure 5 is a side view of the nozzle of the present invention;

Fig. 6 is a cross-sectional view along C-C direction of Fig. 5 .

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. Pressure equalization 11, branch pipe; 12, nozzle; 121, main body; 122, water retaining structure; 123, positioning protrusion.

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 FIGS. 1 and 2 , 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 and Fig. 2, the front end of box body 1 (the left side of box body 1 in Fig. ) is provided with an outer cylinder mouth (not marked in the figure), and 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 and FIG. 2 , the drum washing machine of the present invention also includes a spray system, which mainly includes a circulation pump 8 , an outlet pipe 9 , a pressure equalizer 10 , multiple branch pipes 11 and multiple nozzles 12 . 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 the water inlet of the pressure equalizer 10 through the water outlet pipe 9 . Alternatively, those skilled in the art may also omit the water outlet pipe 9 as needed, so that the water outlet of the circulating pump 8 is directly connected with the water inlet of the pressure equalizer 10 .

Continuing to refer to FIG. 1 and FIG. 2 , the voltage equalizer 10 is preferably disposed in the box body 1 and fixedly connected with the box body 1 (eg, the inner side wall of the box body 1 ). Those skilled in the art can also make the pressure equalizer 10 be fixedly connected to the box body 1 in any feasible connection manner as required. For example, a clamping structure or a fixing structure is provided on the voltage equalizer 10 , and the voltage equalizer 10 is fixed to the box body 1 by means of the clamping structure or fixing structure. Alternatively, those skilled in the art can also make the pressure equalizer 10 fixedly connected with the outer cylinder 1 as required. The pressure equalizer 10 includes multiple water outlets (not shown in the figure). Each water outlet of the pressure equalizer 10 communicates with a nozzle 12 through a branch pipe 11 . Or, those skilled in the art can make the pressure equalizer 10 also have a spare water outlet on the premise that each nozzle 12 is guaranteed to communicate with one water outlet of the pressure equalizer 10 as required.

When the spraying system of the present invention works, as shown by the arrow in Figure 2, the circulation pump 8 pumps the washing water in the outer cylinder 2 to the pressure equalizer 10, and the pressure equalizer 10 distributes the same amount through a plurality of branch pipes 11. Give multiple nozzles 12. A plurality of nozzles 12 sprays wash water into the inner tub 3 to rinse the laundry. When the inner cylinder 3 is running at a high speed, the water sprayed from the nozzle 12 can quickly pass through the clothes and enter the outer cylinder 2 under the action of centrifugal force and gravity. Those skilled in the art can understand that the purpose of the pressure equalizer 10 to distribute the washing water equally to a plurality of nozzles 12 is to make the water pressure of each nozzle 12 consistent and the water output consistent, so that the plurality of nozzles 12 can Make the washing water form an annular water curtain and spray it into the inner cylinder 3 evenly. It should be noted that since the voltage equalizer is a component well known to those skilled in the art, it will not be described too much here.

As shown in FIG. 1 , FIG. 2 and FIG. 4 , a plurality of nozzles 12 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 12 on the sealing window gasket 5 at unequal intervals as required. Wherein, all nozzles 12 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 12 and the sealing window gasket 5 can also play a positioning role for the nozzle 12 .

In addition, those skilled in the art can also arrange a plurality of nozzles 12 at any position near the front end of the outer cylinder 2 as required, for example, a plurality of nozzles 12 are arranged on the inner side of the door body 4, and a plurality of nozzles 12 are arranged on the outer cylinder mouth. at the edge.

As shown in FIGS. 1 to 3 , each branch pipe 11 has a flexible telescopic joint structure so that all nozzles 12 can adapt to the vibration of the sealing window gasket 5 . Alternatively, those skilled in the art can also set the branch pipe 11 as a flexible pipeline according to needs. In addition, those skilled in the art can also make the inner diameter of the branch pipe far away from the circulation pump 8 larger than the inner diameter of the branch pipe close to the circulation pump 8 so as to make the water flows sprayed by all the nozzles 12 substantially the same size.

As shown in FIGS. 1 to 3 , the water outlet of each nozzle 12 points to the inner tube 3 so that the water sprayed from the nozzles 12 can fall into the inner tube 3 to spray the clothes. Alternatively, those skilled in the art can also direct the nozzles 12 to the door body 4 on the premise that the plurality of nozzles 12 can spray the washing water into the inner cylinder 3, and then use the reflection of the door body 4 to make the washing water Spray into the inner cylinder 3.

As shown in FIG. 4 , in order to improve the spraying effect of the spraying system on the clothes in the inner cylinder 3 , each nozzle 12 is configured to spray fan-like water flow or waterfall-like water flow.

As shown in FIGS. 5 and 6 , each nozzle 12 includes a main body 121 , a water retaining structure 122 and a positioning protrusion 123 . Wherein, the water blocking structure 122 is arranged at the water outlet end of the nozzle 12 , that is, the lower end of the main body 121 shown in FIG. 5 and FIG. 6 . The setting of the water retaining structure 122 makes the water outlet between it and the main body 121 form a flat shape, so that the nozzle 12 can spray out a fan-like water flow or a waterfall-like water flow. Wherein, the flat shape is preferably a trumpet-shaped flat shape or a figure-eight flat shape.

In addition, under the premise of ensuring that the clothes in the inner cylinder 3 can be sprayed, those skilled in the art can properly adjust the water retaining structure 122 as required, and set the water outlet of the nozzle 12 into any other feasible shape, for example, a honeycomb shape, circular hole shape, triangular shape.

Continuing to refer to FIG. 5 and FIG. 6 , the positioning protrusion 123 is disposed on the main body 121 for circumferentially fixing the nozzle 12 so that the water outlet of the nozzle 12 points to the inner cylinder mouth. In addition, on the premise that the nozzle 12 can be fixed circumferentially, those skilled in the art can also set the positioning protrusion 123 as any other positioning structure, such as a groove, as required.

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 12 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. Further, the present invention distributes the washing water pumped by the circulation pump 8 to each nozzle 12 equally through the pressure equalizer 10 arranged between the circulation pump 8 and a plurality of nozzles 12, so that all nozzles 12 can The annular water curtain spraying effect is formed, so that the clothes in the inner cylinder 3 can be sprayed better, and the washing effect of the washing machine is optimized.

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 fixedly arranged in said casing, and an inner cylinder rotatably arranged in said outer cylinder, It is characterized in that the spraying system includes a circulating pump, a plurality of branch pipes 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 communicates with the water inlets of the plurality of branch pipes; The plurality of nozzles are arranged near the front end of the outer cylinder, and each of the nozzles communicates with the circulation pump through a branch pipe; Wherein, each of the nozzles includes a water-retaining structure arranged on its main body, When working, the circulation pump pumps the washing water in the outer cylinder to the nozzle through the plurality of branch pipes, and the nozzle sprays the washing water into the inner cylinder in a waterfall through the water retaining structure. 2 . The spray system for a drum washing machine according to claim 1 , wherein the water retaining structure is arranged at the water outlet end of the nozzle, and makes the water outlet of the nozzle flat. 3. The spray system for a drum washing machine according to claim 2, wherein a positioning structure is arranged on the main body of each of the nozzles, and the nozzles are fixed on the outer cylinder by means of the positioning structures Near the front end of the nozzle, and make the water outlet of the nozzle point to the inner cylinder. 4. The spray system for a drum washing machine according to claim 3, wherein the positioning structure is a positioning protrusion provided on the main body. 5. The spray system for drum washing machine according to claim 4, characterized in that, the plurality of nozzles are all arranged on the sealing window gasket, wherein the sealing window gasket is arranged between the box body and the between the outer cylinders. 6. The spray system for a drum washing machine according to claim 5, wherein the plurality of nozzles all pass through the sealing window gasket and are sealingly connected with the sealing window gasket; and/or, the The plurality of nozzles are arranged at equal intervals along the circumference of the sealing window gasket. 7. The spray system for a drum washing machine according to any one of claims 1 to 6, characterized in that, the spray system further comprises a pressure equalizer, and the pressure equalizer is arranged in the box Or on the outer cylinder and include a water inlet and a plurality of water outlets, the water outlet of the circulating pump communicates with the water inlet of the pressure equalizer, and each of the nozzles is connected to the water outlet through a branch pipe A water outlet of the pressure equalizer is connected. 8. The spray system for drum washing machine according to claim 7, characterized in that, the spray system further comprises a water outlet pipe, the two ends of the water outlet pipe are respectively connected to the water outlet of the circulation pump and the water outlet of the circulation pump. The water inlet of the pressure equalizer is connected. 9. The spray system for drum washing machine according to claim 7, characterized in that, the water outlet of the circulation pump is also connected with the drain pipe of the drum washing machine, and the water outlet pipe is configured for selectively opening or closing the first shut-off valve of the outlet pipe, the drain pipe being configured with a second shut-off valve for selectively opening or closing the drain pipe; and/or The spraying 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. 10. A drum washing machine, characterized in that the drum washing machine comprises the spray system according to any one of claims 1-9.