JP2022138163A - Drum washing machine and its spray system - Google Patents

Abstract

A spray device for a drum washing machine, which has a simple structure, is manufactured at a low cost, and can greatly improve the rinsing speed.
A drum washing machine has a housing (1), an outer cylinder (2), and an inner cylinder (3) installed in order from outside to inside, and a spray system includes a circulation pump (8), a water discharge pipe (9), and an annular waterproof structure (101). , and the annular water-impervious structure 101 is installed between the inner wall of the outer cylinder 2 and the outer wall of the inner cylinder 3, so that the injection port is formed between the peripheral edge 21 of the outer cylinder mouth and the annular water-impervious structure 101 102, the circulation pump 8 is installed in the housing 1 or the outer cylinder 2, and the circulation pump 8 has a water supply port leading to the outer cylinder 2 and a water outlet opening to the water outlet pipe 9. The circulation pump 8 pumps the washing water in the outer cylinder 3 to the annular water supply 10 so that the washing water is injected into the inner cylinder 3 through the injection port 102 during operation.
[Selection drawing] Fig. 1

Description

Field of the Invention The present invention relates to the field of domestic appliances, and specifically provides a drum washing machine and its spray system.

The current drum washing machine originated in Europe and mainly comprises a housing, an outer cylinder and an inner cylinder from outside to inside. The operating method of the drum washing machine is similar to the principle of beating clothes with a beating stick. During work, the inner cylinder is driven by the drive motor to rotate. As the inner cylinder rotates, the clothes are continuously lifted and dropped in the drum, and then lifted and dropped again to perform repeated movements. The synergistic action of detergent and water cleans the clothes.

In order to improve the washing and rinsing effect of the water stream on the clothes, some drum washing machines are additionally provided with a circulating spray device. For example, in the drum-type washing machine disclosed in Patent Document No. CN102482834B, there are provided therein a plurality of jets, one end of which communicates with the bottom end of a tub (jacket) and the other end of which is located at the periphery of the tub opening. A circulation path leading to an outlet is provided. The circulation path supplies washing water from the bottom end of the water tank to the plurality of jetting ports, and jets the washing water to the drum (inner cylinder), thereby circulating and washing the clothes.

The drum-type washing machine disclosed in the patent document of publication number CN102482834B has a strong washing ability for clothes, but the water tank provided with multiple spouts has a complicated structure, and the production cost is relatively high. high.

Therefore, a new drum washing machine is needed in the field to solve the above problems.

In aspect 1,

In order to solve the above problems in the prior art, that is, to solve the problem that the conventional drum washing machine spray device with circulation spray function has a complicated mounting structure and a relatively high production cost, the present invention provides: Provided is a spray system for a drum washing machine comprising a housing, an outer cylinder and an inner cylinder, which are installed in order from outside to inside, wherein the spray system includes a circulation pump, a water discharge pipe and an annular waterproof structure, The annular water impermeable structure is installed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, thereby forming an annular water supply having injection ports between the peripheral edge of the outer cylinder port and the annular water impervious structure. and the circulation pump has a water supply port communicating with the outer cylinder and a water outlet communicating with the annular water supply through the water discharge pipe. During operation, the circulation pump cleans the outer cylinder. Water is pumped into the annular channel, and the wash water is injected into the inner cylinder by the injection port.

In a preferred embodiment of said spray system, said annular waterproof structure is an annular rib installed on the inner wall of said outer cylinder.

In a preferred embodiment of the spray system, the annular waterproof structure is an annular rib installed on the outer wall of the inner cylinder.

In a preferred embodiment of the spray system, the annular waterproof structure includes an annular rib installed on the inner wall of the outer cylinder and an annular rib installed on the outer wall of the inner cylinder.

In a preferred embodiment of the spray system, the injection port is provided with a flow guide structure for injecting wash water entering the annular water channel into the inner cylinder in the form of an annular waterfall stream.

In a preferred embodiment of said spray system, said flow-directing structure is installed at the periphery of said barrel mouth.

In a preferred embodiment of the spray system, a window packing is provided between the housing mouth and the outer cylinder mouth of the drum washing machine, and the flow guide structure is installed on the window packing.

In a preferred embodiment of the spray system, the water outlet of the circulation pump is further communicated with the water discharge pipe of the drum washing machine, and the water discharge pipe includes a first valve for selectively opening or closing the water discharge pipe. A shut-off valve is positioned and a second shut-off valve is positioned in the drain line for selectively opening or closing the drain line.

In a preferred embodiment of the spray system, the spray 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 water discharge pipe by the three-way valve.

The present invention further provides a drum washing machine comprising a washing machine body, wherein the drum washing machine further comprises the spray system.

In the technical solution of the present invention, an annular water impermeable structure is installed on the inner wall of the outer cylinder and/or the outer wall of the inner cylinder to form an annular water channel between the periphery of the outer cylinder mouth and this annular impermeable structure. is simple, there is no need to separately install a circulating water channel, and the manufacturing cost of the washing machine is greatly reduced. In addition, the annular channel itself formed by the present invention is equipped with an injection port, so there is no need to separately install an injection device for injecting washing water. As a preferred example, the injection port according to the present invention is provided with a flow guide structure to achieve the effect of a circular waterfall water flow, and this injection effect can quickly pass through clothing to The rinsing speed can be greatly improved.

In aspect 2,

In order to solve the above problems in the prior art, that is, to solve the problem that the conventional drum washing machine spray device with circulation spray function has a complicated mounting structure and a relatively high production cost, the present invention provides: A drum washing machine comprising a housing, an outer cylinder fixedly installed on the housing, an inner cylinder rotatably installed on the outer cylinder, and a window packing connected between the housing and the outer cylinder. A spray system for the machine is provided, the spray system includes a circulation pump, a water outlet pipe, and an annular recess installed at the end of the outer cylinder, and the window packing connects the annular recess and the annular water. The circulating pump has a shielding portion formed with an injection port provided thereon, and the circulation pump has a water supply port communicating with the outer cylinder and a water outlet communicating with the annular water supply via the water outlet pipe. At times, the circulating pump pumps wash water in the outer cylinder to the water ring, and the wash water is injected into the inner cylinder by the injection ports.

In a preferred embodiment of the spray system, the annular recessed tank and the water outlet pipe are communicated through a connecting structure, or the annular recessed tank is directly communicated with the water outlet pipe.

In a preferred embodiment of the spray system, the annular recess is molded integrally with the outlet pipe.

In a preferred embodiment of said spray system, said outlet is a slit structure on said shield.

In a preferred embodiment of the spray system, the injection port has a guide structure for obliquely injecting wash water entering the annular water supply into the inner cylinder.

In a preferred embodiment of said spray system, said injection port comprises an injection member for injecting wash water entering said annular water supply into said inner cylinder after forming a uniform annular water curtain.

In a preferred embodiment of the spray system, the water outlet of the circulation pump is further communicated with the water discharge pipe of the drum washing machine, and the water discharge pipe includes a first valve for selectively opening or closing the water discharge pipe. A shut-off valve is positioned and a second shut-off valve is positioned in the drain line for selectively opening or closing the drain line.

In a preferred embodiment of the spray system, the spray 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 water discharge pipe by the three-way valve.

The present invention further provides a drum washing machine comprising a washing machine body, wherein the drum washing machine further comprises the spray system.

In the technical solution of the present invention, the shielding part of the window packing and the annular recess at the tip of the outer cylinder form the annular water supply, and the opening of the injection port directly on the shielding part is simple in structure, and the conventional The change in the structure of the drum washing machine is relatively small, and there is no need to separately install the spray device, which greatly reduces the manufacturing cost of the washing machine. As a preferred example, the jet according to the present invention is provided with a guide structure or a jet member to achieve an annular waterfall jet effect, and the jet effect can quickly pass through the clothes. Therefore, the rinsing speed can be greatly improved.

In aspect 3,

In order to solve the above problems in the prior art, that is, to solve the problem that the conventional drum washing machine spray device with circulation spray function has a complicated mounting structure and a relatively high production cost, the present invention provides a spray system for a drum washing machine comprising a housing, an outer cylinder and an inner cylinder, which are installed in order from outside to inside, wherein the spray system comprises a circulation pump, a water outlet pipe and a tip of the outer cylinder. The sealing cover plate and the annular recessed tank form an annular water supply in which an injection port is installed, and the circulation pump has a water supply port inside the outer cylinder. The circulation pump pumps the washing water in the outer cylinder so that the water outlet communicates with the annular water supply through the water outlet pipe, and the washing water is injected into the inner cylinder through the injection opening during operation. Pump into the water ring.

In a preferred embodiment of the spray system, the annular recessed tank and the water discharge pipe are communicated through a connecting structure, or the annular recessed tank is directly communicated with the water discharge pipe, or the annular recessed tank and the water discharge pipe are directly connected to each other. It is molded integrally with the water discharge pipe.

In a preferred embodiment of said spray system, said injection port is a slit structure opened on said sealing cover plate.

In a preferred embodiment of the spray system, the injection port is a slit structure opened inside the annular recessed tank.

In a preferred embodiment of the spray system, the injection port is a slit structure formed between the sealing cover plate and the annular recess.

In a preferred embodiment of the spray system, the injection port has a guide structure for obliquely injecting wash water entering the annular water supply into the inner cylinder.

In a preferred embodiment of said spray system, said injection port comprises an injection member for injecting wash water entering said annular chamber into said inner cylinder after forming a uniform annular water curtain.

In a preferred embodiment of the spray system, the water outlet of the circulation pump is further communicated with the water discharge pipe of the drum washing machine, and the water discharge pipe includes a first valve for selectively opening or closing the water discharge pipe. A shut-off valve is positioned and a second shut-off valve is positioned in the drain line for selectively opening or closing the drain line.

In a preferred embodiment of the spray system, the spray 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 water discharge pipe by the three-way valve.

The present invention further provides a drum washing machine comprising a washing machine body, wherein the drum washing machine further comprises the spray system.

In the technical solution of the present invention, the ring water supply is formed by the sealing cap plate and the annular recess at the tip of the outer cylinder, and the injection port is directly opened on the inner wall of the sealing cap plate or the annular recess, which is simple in structure. , the change to the structure of the conventional drum washing machine is relatively small, and there is no need to separately install the spray device, which greatly reduces the manufacturing cost of the washing machine. As a preferred example, the jet according to the present invention is provided with a guide structure or a jet member to achieve an annular waterfall jet effect, and the jet effect can quickly pass through the clothes. Therefore, the rinsing speed can be greatly improved.

Preferred embodiments of the present invention are described below with reference to the drawings.

1 is a cross-sectional view of Example 1 of a drum washing machine according to aspect 1 of the present invention; FIG. FIG. 2 is an enlarged view of part A in FIG. 1; Fig. 2 is a cross-sectional view of Example 2 of the drum washing machine according to aspect 1 of the present invention; 4 is an enlarged view of part A in FIG. 3. FIG. FIG. 3 is a cross-sectional view of Example 3 of the drum washing machine according to aspect 1 of the present invention; 6 is an enlarged view of part A in FIG. 5. FIG. FIG. 4 is a cross-sectional view of a drum washing machine according to aspect 2 of the present invention; 8 is an enlarged view of part A in FIG. 7. FIG. It is sectional drawing of the drum washing machine in the aspect 3 of this invention. 10 is an enlarged view of part A in FIG. 9. FIG. FIG. 10 is an enlarged view of a portion B in FIG. 9;

Persons skilled in the art should understand that the embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention. For example, although the present invention has been described with injection holes having a flat configuration, the injection holes of the present invention may also be injection holes of any other configuration or shape. A person skilled in the art can adjust it as necessary to suit the specific application, and the adjusted technical solution still belongs to the protection scope of the present invention.

In the description of the present invention, the terms "attachment", "communication", and "connection" should be understood in a broad sense unless there are particularly clear definitions or limitations. For example, they may be fixed connections. However, it may be detachably connected, or may be integrally connected. It may be a mechanical connection or an electrical connection. It may be directly connected, indirectly connected via an intermediate medium, or communicated inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

In aspect 1,

Referring to FIG. 1, FIG. 1 is a sectional view of Embodiment 1 of the drum washing machine of the present invention. As shown in FIG. 1, the drum washing machine of the present invention mainly includes a housing 1, an outer cylinder 2, an inner cylinder 3, a door 4, a window packing 5, a drain pump 6, and a drain pipe 7. Among them, the outer cylinder 2 is fixedly installed in the housing 1 , the inner cylinder 3 is rotatably installed on the outer cylinder 2 , and the window packing 5 is installed between the housing 1 and the outer cylinder 2 . The drain pump 6 and the drain pipe 7 are both installed in the housing 1 , and the drain pump 6 has a water inlet connected to the inner bottom of the outer cylinder 2 , a water outlet connected to one end of the drain pipe 7 , and a drain pipe 7 . The other end of the is connected to the outside. The drain pump 6 can drain the washing water in the outer cylinder 2 through the drain pipe 7 .

In addition, those skilled in the art can also omit the drain pump 6 and replace the drain pump 6 with a shut-off valve, if necessary, if all parts of the drain pipe 7 are lower than the inner bottom end of the outer cylinder 2. I understand when I get it. When the drum washing machine needs to drain water, the shut-off valve is opened to automatically drain the washing water in the outer cylinder 2 from the drain pipe 7 by the action of its own weight.

Continuing to refer to FIG. 1, a housing opening (not shown) is provided at the tip of the housing 1 (left side of the housing 1 in FIG. 1), and a housing port (not shown) is provided at the tip of the outer cylinder 2 (left side of the outer cylinder 2 in FIG. 1). An outer tube port (not shown) is provided, and an inner tube port (not shown) is provided at the tip of the inner tube 3 (on the left side of the inner tube 3 in FIG. 1). One end of the window packing 5 is sealingly connected to the periphery of the outer cylinder opening, and the other end is sealingly connected to the periphery of the inner cylinder opening. A door 4 is pivotally installed on the housing 1, and when the door 4 is closed, it can close the housing mouth to prevent the washing water in the outer cylinder 2 from overflowing the housing mouth.

As shown in FIG. 1, the drum washing machine according to the present invention further comprises a spray system, which mainly includes a circulation pump 8, a water outlet pipe 9, and an annular waterproof structure. and the outer wall of the inner cylinder (annular rib 101 shown in FIG. 1), an annular water channel 10 having a jetting port 102 between the peripheral edge 21 of the outer cylinder mouth and the annular rib 101 is formed. It will be done. Among them, it is preferable that the circulation pump 8 is installed in the housing 1 and fixedly connected to the housing 1 . Alternatively, a person skilled in the art can also have the circulation pump 8 fixedly connected to the barrel 1 if desired. A water supply port of the circulation pump 8 communicates with the inside of the outer cylinder 2 and is preferably connected to the bottom end of the outer cylinder 2 via a water supply pipe. Alternatively, a person skilled in the art can connect the water supply pipe to any position of the barrel 2, provided that it is ensured that this water supply pipe is below the liquid level in the barrel 2, as required. A water outlet of the circulating pump 8 is communicated with an annular water supply 10 through a water outlet pipe 9 . When the spray system according to the present invention is in operation, the circulation pump 8 pumps the washing water in the outer cylinder 2 to the annular water supply 10, as indicated by the arrow in FIG. is injected into the inner cylinder 3 by When the inner cylinder 3 is operating at a high speed, the water flow jetted from the jet port 102 can quickly pass through the clothes and enter the outer cylinder 2 due to the action of centrifugal force and gravity.

Referring to FIG. 2, FIG. 2 is an enlarged view of portion A in FIG. As shown in FIG. 2, the annular rib 101 is installed on the inner wall of the outer cylinder 2 in this embodiment. As a result, an annular water channel 10 is formed between the peripheral edge 21 of the outer cylinder port and the annular rib 101, and an injection port 102 is formed between the peripheral edge 21 of the outer cylinder port and the inner cylinder port. Those skilled in the art can set the specific position of the annular rib 101 according to the actual application of the washing machine. It is installed on the peripheral edge 21 away from the mouth of the outer cylinder so as to increase the inner diameter of the annular water supply 10 installed or formed on the peripheral edge 21 .

Preferably, the injection port 102 is provided with a flow guide structure 103 for injecting the wash water entering the annular water supply 10 into the inner cylinder 3 in the form of an annular waterfall stream. By way of example, this diversion structure 103 may be installed at the rim 21 of the barrel mouth (as shown in FIG. 2, i.e. the case where the diversion structure 103 is installed at the rim 21 of the barrel mouth), It may be installed on the window packing 5 . In other words, as long as the guide structure 103 can achieve the purpose of guiding the wash water flowing out of the ring water channel 10, those skilled in the art can flexibly install the position of the guide structure 103.

In addition to the above embodiments, FIGS. 3-6 also show other embodiments of the present invention.

3 and 4, FIG. 3 is a cross-sectional view of Embodiment 2 of the drum washing machine of the present invention, and FIG. 4 is an enlarged view of portion A in FIG. In this embodiment, the difference from embodiment 1 is that an annular rib 10 is provided on the outer wall of the inner cylinder 3 .

5 and 6, FIG. 5 is a sectional view of Embodiment 3 of the drum washing machine of the present invention, and FIG. 6 is an enlarged view of portion A in FIG. This embodiment differs from the first embodiment in that both the outer wall of the inner cylinder 3 and the inner wall of the outer cylinder 2 are provided with annular ribs 10 .

It should be noted that although the circular rib structure of the present invention has been described as an example of a circular rib, those skilled in the art will be able to adapt the circular water blocking structure, for example, in a sheet shape, a cylindrical shape, a hollow shape, etc., according to the actual design needs. In addition, the annular water-blocking structure may be designed into other types of structures, such as structures, and in addition, the annular water-blocking structure may be replaced with a deformed ring (e.g., the distance between the circular water-blocking structure and the circumference of the outer tube mouth tends to change, (i.e., the ring channel 10 formed has a plurality of different inner diameters), none of which departs from the scope of protection of the present invention.

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

Those skilled in the art will understand that in other possible embodiments of the invention, the drain pump 6 and the circulation pump 8 can be replaced by one pump. As an example 1, the drain pump 6 is omitted and the outlet of the circulation pump 8 is communicated with the drain pipe 9 and the drain pipe 7 respectively, and the drain pipe 9 is provided with a first valve for selectively opening or closing it. , and the drain pipe 7 is provided with a second isolation valve for selectively opening or closing it. When the drum washing machine performs the spraying operation, the first isolation valve is opened and the second isolation valve is closed, and when the drum washing machine performs the draining operation, the first isolation valve is closed and the second isolation valve is closed. The isolation valve will open. As example 2, the drainage pump 6 is omitted, and one three-way valve is provided at the water outlet of the circulation pump 8 so that the water outlet of the circulation pump 8 is selectively communicated with the water outlet pipe 9 or the water discharge pipe 7 by the three-way valve. to place. Moreover, those skilled in the art may make it so that the three-way valve can block the communication between the circulation pump 8 and the water discharge pipe 9 and the communication between the circulation pump 8 and the water discharge pipe 7 at the same time, if necessary.

As described above, according to the present invention, by installing the annular rib 101 on the inner wall of the outer cylinder 2 and/or the outer wall of the inner cylinder 3, an annular water channel is formed between the peripheral edge 21 of the outer cylinder mouth and the annular rib 101. The structure is simple, and there is no need to install a separate circulating water channel, which greatly reduces the manufacturing cost of the washing machine. In addition, the annular duct 10 formed by the present invention itself has a jetting port 102, so there is no need to separately install a jetting device for jetting cleansing water. As a preferred example, the injection nozzle 102 according to the present invention is provided with a flow guide structure 103 to achieve an annular waterfall water jet effect, which can quickly pass through the clothes. Therefore, the rinsing speed can be greatly improved.

In addition, the present invention further provides a drum washing machine comprising a washing machine main body and the above spray system for a drum washing machine. The specific embodiment of this drum washing machine can be referred to the above description, and the description is omitted here.

In aspect 2,

As shown in FIG. 7, the drum washing machine of the present invention mainly includes a housing 1, an outer cylinder 2, an inner cylinder 3, a door 4, a window packing 5, a drain pump 6, and a drain pipe 7. As shown in FIG. Among them, the outer cylinder 2 is fixedly installed in the housing 1 , the inner cylinder 3 is rotatably installed on the outer cylinder 2 , and the window packing 5 is installed between the housing 1 and the outer cylinder 2 . The drain pump 6 and the drain pipe 7 are both installed in the housing 1 , and the drain pump 6 has a water inlet connected to the inner bottom of the outer cylinder 2 , a water outlet connected to one end of the drain pipe 7 , and a drain pipe 7 . The other end of the is connected to the outside. The drain pump 6 can drain the washing water in the outer cylinder 2 through the drain pipe 7 .

In addition, those skilled in the art can also omit the drain pump 6 and replace the drain pump 6 with a shut-off valve, if necessary, if all parts of the drain pipe 7 are lower than the inner bottom end of the outer cylinder 2. I understand when I get it. When the drum washing machine needs to drain water, the shut-off valve is opened to automatically drain the washing water in the outer cylinder 2 from the drain pipe 7 by the action of its own weight.

Continuing to refer to FIG. 7, a housing opening (not shown) is provided at the tip of the housing 1 (left side of the housing 1 in FIG. 7), and the tip of the outer cylinder 2 (left side of the outer cylinder 2 in FIG. 7) is provided. An outer tube opening (not shown) is provided, and an inner tube opening (not shown) is provided at the tip of the inner tube 3 (on the left side of the inner tube 3 in FIG. 7). One end of the window packing 5 is sealingly connected to the periphery of the outer cylinder opening, and the other end is sealingly connected to the periphery of the inner cylinder opening. A door 4 is pivotally installed on the housing 1, and when the door 4 is closed, it can close the housing mouth to prevent the washing water in the outer cylinder 2 from overflowing the housing mouth.

As shown in FIGS. 7 and 8, FIG. 8 is an enlarged view of part A in FIG. The drum washing machine according to the present invention further comprises a spray system mainly including a circulation pump 8, a water outlet pipe 9, and an annular recess 22 installed at the tip 21 of the outer cylinder. Among them, the window packing 5 has a shielding part 51, and the shielding part 51 and the annular groove 22 form the ring water supply 10 (that is, the shielding part 51 covers the opening of the annular groove 22). The closed ring water supply 10 is formed by the above), and the shielding portion 51 is provided with an injection port 511 . The circulation pump 8 is preferably installed in the housing 1 and fixedly connected to the housing 1 . Alternatively, a person skilled in the art can also have the circulation pump 8 fixedly connected to the barrel 1 if desired. A water supply port of the circulation pump 8 communicates with the inside of the outer cylinder 2 and is preferably connected to the bottom end of the outer cylinder 2 via a water supply pipe. Alternatively, a person skilled in the art can connect the water supply pipe to any position of the barrel 2, provided that it is ensured that this water supply pipe is below the liquid level in the barrel 2, as required. A water outlet of the circulating pump 8 is communicated with an annular water supply 10 through a water outlet pipe 9 . When the spray system according to the present invention is in operation, as indicated by the arrow in FIG. is injected into the inner cylinder 3 by When the inner cylinder 3 is operating at a high speed, the water flow jetted from the jet port 511 can quickly pass through the clothes and enter the outer cylinder 2 due to the action of centrifugal force and gravity.

As an example, the annular recessed tank 22 and the water discharge pipe 9 of the present invention may be communicated via a connection structure (e.g., connection hose, connection hard pipe, etc.) or may be directly communicated (i.e., connection structure ), the annular recessed tank 22 and the water outlet pipe 9 may be formed integrally. A person skilled in the art can flexibly choose the appropriate connection method according to the actual design needs, as long as the circulation pump 8 can pump the washing water into the annular recessed tank 22 through the water outlet pipe 9 .

Continuing to refer to FIG. 8 , the injection port 511 is a slit structure on the shield 51 . The annular water supply 10 is formed by the shielding part 51 and the annular groove 22, and the injection port 511 of the annular water supply 10 has a slit structure on the shielding part 51. , a plurality of slit structures may be placed on the shielding portion 51 at equal or non-equidistant intervals, or a single annular slit structure may be placed (i.e. along the circumference of the shielding portion 51 A slit structure with a connected end may be opened), which achieves the spray effect of an annular water curtain.

As an example, the injection port 511 has a guide structure (for example, the injection port 511 is installed in the shape of a slope) for obliquely injecting the wash water entering the annular water supply 10 into the inner cylinder 3 . In addition, the injection port 511 may further have an injection member for forming a uniform annular water curtain of wash water entering the annular water supply 10 and then injecting it into the inner cylinder 3 . The injection member is rationally formed according to the shape and size of the injection port 511 so that the wash water entering the annular water supply 10 is formed into a uniform annular water curtain and then injected into the inner cylinder 3 . Design possibilities are readily understood by those skilled in the art.

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

Those skilled in the art will understand that in other possible embodiments of the invention, the drain pump 6 and the circulation pump 8 can be replaced by one pump. As an example 1, the drain pump 6 is omitted and the outlet of the circulation pump 8 is communicated with the drain pipe 9 and the drain pipe 7 respectively, and the drain pipe 9 is provided with a first valve for selectively opening or closing it. , and the drain pipe 7 is provided with a second isolation valve for selectively opening or closing it. When the drum washing machine performs the spraying operation, the first isolation valve is opened and the second isolation valve is closed, and when the drum washing machine performs the draining operation, the first isolation valve is closed and the second isolation valve is closed. The isolation valve will open. As example 2, the drainage pump 6 is omitted, and one three-way valve is provided at the water outlet of the circulation pump 8 so that the water outlet of the circulation pump 8 is selectively communicated with the water outlet pipe 9 or the water discharge pipe 7 by the three-way valve. to place. Moreover, those skilled in the art may make it so that the three-way valve can block the communication between the circulation pump 8 and the water discharge pipe 9 and the communication between the circulation pump 8 and the water discharge pipe 7 at the same time, if necessary.

As described above, according to the present invention, the shielding portion 51 of the window packing 5 and the annular groove 22 at the tip 21 of the outer cylinder form the annular water supply 10, and the injection port 511 is formed directly on the shielding portion 51. , the structure is simple, the change to the structure of the conventional drum washing machine is relatively small, and the spray device does not need to be separately installed, which greatly reduces the manufacturing cost of the washing machine. As a preferred example, the injection port 511 according to the present invention is provided with a guide structure or injection member to achieve the effect of an annular waterfall water jet, which can quickly pass through the clothes. As a result, the rinsing speed can be greatly improved.

In addition, the present invention further provides a drum washing machine comprising a washing machine main body and the above spray system for a drum washing machine. The specific embodiment of this drum washing machine can be referred to the above description, and the description is omitted here.

In aspect 3,

As shown in FIG. 9, the drum washing machine of the present invention mainly includes a housing 1, an outer cylinder 2, an inner cylinder 3, a door 4, a window packing 5, a drain pump 6, and a drain pipe 7. Among them, the outer cylinder 2 is fixedly installed in the housing 1 , the inner cylinder 3 is rotatably installed on the outer cylinder 2 , and the window packing 5 is installed between the housing 1 and the outer cylinder 2 . The drain pump 6 and the drain pipe 7 are both installed in the housing 1 , and the drain pump 6 has a water inlet connected to the inner bottom of the outer cylinder 2 , a water outlet connected to one end of the drain pipe 7 , and a drain pipe 7 . The other end of the is connected to the outside. The drain pump 6 can drain the washing water in the outer cylinder 2 through the drain pipe 7 .

In addition, those skilled in the art can also omit the drain pump 6 and replace the drain pump 6 with a shut-off valve, if necessary, if all parts of the drain pipe 7 are lower than the inner bottom end of the outer cylinder 2. I understand when I get it. When the drum washing machine needs to drain water, the shut-off valve is opened and the washing water in the outer cylinder 2 is automatically drained from the drain pipe 7 by the action of its own gravity.

Continuing to refer to FIG. 9, a housing port (not shown) is provided at the tip of the housing 1 (left side of the housing 1 in FIG. 9), and a housing port (not shown) is provided at the tip of the outer cylinder 2 (left side of the outer cylinder 2 in FIG. 9). An outer tube opening (not shown) is provided, and an inner tube opening (not shown) is provided at the tip of the inner tube 3 (on the left side of the inner tube 3 in FIG. 9). One end of the window packing 5 is sealingly connected to the periphery of the outer cylinder opening, and the other end is sealingly connected to the periphery of the inner cylinder opening. A door 4 is pivotally installed on the housing 1, and when the door 4 is closed, it can close the housing mouth to prevent the washing water in the outer cylinder 2 from overflowing the housing mouth.

9 to 11, FIG. 10 is an enlarged view of part A in FIG. 9, and FIG. 11 is an enlarged view of part B in FIG. The drum washing machine according to the present invention further comprises a spray system mainly including a circulating pump 8, a water outlet pipe 9, an annular concave tank 22 installed at the tip 21 of the outer cylinder, and a sealing cover plate 23. The sealing lid plate 23 and the annular groove 22 form an annular channel (that is, the sealing lid plate 23 covers the opening of the annular groove 22 to form the closed annular channel 10). , an annular water channel to be formed is provided with an injection port 101 . The circulation pump 8 is preferably installed in the housing 1 and fixedly connected to the housing 1 . Alternatively, a person skilled in the art can also have the circulation pump 8 fixedly connected to the barrel 1 if desired. A water supply port of the circulation pump 8 communicates with the inside of the outer cylinder 2 and is preferably connected to the bottom end of the outer cylinder 2 via a water supply pipe. Alternatively, a person skilled in the art can connect the water supply pipe to any position of the barrel 2, provided that it is ensured that this water supply pipe is below the liquid level in the barrel 2, as required. A water outlet of the circulating pump 8 is communicated with an annular water supply 10 through a water outlet pipe 9 . When the spray system according to the present invention is in operation, as indicated by the arrow in FIG. is injected into the inner cylinder 3 by When the inner cylinder 3 is operating at a high speed, the water stream jetted from the nozzle 101 can quickly pass through the clothes and enter the outer cylinder 2 due to the action of centrifugal force and gravity.

As an example, the annular recessed tank 22 and the water discharge pipe 9 of the present invention may be communicated via a connection structure (e.g., connection hose, connection hard pipe, etc.) or may be directly communicated (i.e., connection structure ), the annular recessed tank 22 and the water outlet pipe 9 may be formed integrally. A person skilled in the art can flexibly choose the appropriate connection method according to the actual design needs, as long as the circulation pump 8 can pump the washing water into the annular recessed tank 22 through the water outlet pipe 9 .

Still referring to FIGS. 10 and 11, as an example, the injection port 101 may be a slit structure on the sealing lid plate 23, and the injection port 101 in FIGS. It is a slit structure that is opened. As another example, although not shown, those skilled in the art can easily understand that the injection port 101 may have a slit structure formed inside the annular recessed groove 22 . In addition, when the sealing lid plate 23 covers the opening of the annular groove 22 , a slit structure may be formed between the sealing lid plate 23 and the annular groove 22 , and this slit structure may be used as the injection port 101 . A person skilled in the art can flexibly install the injection port 101 according to the actual design needs, and none of them departs from the protection scope of the present invention. The ring water pipe 10 is formed by the sealing cover plate 23 and the ring groove 22, and the injection port 101 has a slit structure formed inside the sealing cover plate 23 or the ring groove 22. According to the actual design requirements, the inside of the sealing cover plate 23 or the annular recess 22 may be provided with a plurality of slit structures at regular intervals or at irregular intervals, or a single annular slit structure. may be installed (that is, along the circumference of the sealing cover plate 23 or the inner circumference of the annular recess 22, a slit structure with end-to-end communication may be formed), so as to form an annular water curtain; A spray effect is achieved.

As an example, the injection port 101 has a guide structure (for example, the injection port 101 is installed in the shape of a slope) for obliquely injecting the wash water entering the annular water supply 10 into the inner cylinder 3 . In addition, the injection port 101 may further have an injection member for forming a uniform annular water curtain of wash water entering the annular water supply 10 and then injecting it into the inner cylinder 3 . The injection member is rationally formed according to the shape and size of the injection port 101 so that the wash water entering the annular water supply 10 is formed into a uniform annular water curtain and then injected into the inner cylinder 3 . Design possibilities are readily understood by those skilled in the art.

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

Those skilled in the art will understand that in other possible embodiments of the invention, the drain pump 6 and the circulation pump 8 can be replaced by one pump. As an example 1, the drain pump 6 is omitted and the outlet of the circulation pump 8 is communicated with the drain pipe 9 and the drain pipe 7 respectively, and the drain pipe 9 is provided with a first valve for selectively opening or closing it. , and the drain pipe 7 is provided with a second isolation valve for selectively opening or closing it. When the drum washing machine performs the spraying operation, the first isolation valve is opened and the second isolation valve is closed, and when the drum washing machine performs the draining operation, the first isolation valve is closed and the second isolation valve is closed. The isolation valve will open. As example 2, the drainage pump 6 is omitted, and one three-way valve is provided at the water outlet of the circulation pump 8 so that the water outlet of the circulation pump 8 is selectively communicated with the water outlet pipe 9 or the water discharge pipe 7 by the three-way valve. to place. Moreover, those skilled in the art may make it so that the three-way valve can block the communication between the circulation pump 8 and the water discharge pipe 9 and the communication between the circulation pump 8 and the water discharge pipe 7 at the same time, if necessary.

As described above, according to the present invention, the annular water supply 10 is formed by the sealing cover plate 23 and the annular recessed tank 22 at the tip 21 of the outer cylinder, and the injection port 101 is directly formed on the inner wall of the sealing cover plate 23 or the annular recessed tank 22 . , the structure is simple, the change to the structure of the conventional drum washing machine is relatively small, and the spray device does not need to be installed separately, which greatly reduces the manufacturing cost of the washing machine. As a preferred example, the injection nozzle 101 according to the present invention is provided with a guide structure or injection member to achieve an annular waterfall jet effect, which can quickly pass through the clothes. As a result, the rinsing speed can be greatly improved.

In addition, the present invention further provides a drum washing machine comprising a washing machine main body and the above spray system for a drum washing machine. The specific embodiment of this drum washing machine can be referred to the above description, and the description is omitted here.

Although the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings, it will be easily understood by those skilled in the art that the protection scope of the present invention is not limited to these specific embodiments. understood. Without departing from the principle of the present invention, those skilled in the art may make equivalent changes or replacements to the relevant technical features, and any technical solution after these changes or replacements shall be protected by the present invention. Included in the scope.

Description of reference numerals in drawings 1 to 6 in embodiment 1

1 Housing 2 Outer cylinder 21 Outer cylinder opening rim 3 Inner cylinder 4 Door 5 Window packing 6 Drainage pump 7 Drainage pipe 8 Circulation pump 9 Outlet pipe 10 Circular water supply 101 Circular rib 102 Injection port 103 Flow guide structure

Description of reference numerals in drawings 7 and 8 in embodiment 2

1 housing 2 outer cylinder 21 outer cylinder tip 22 annular recessed tank 3 inner cylinder 4 door 5 window packing 51 shielding part 511 injection port 6 drain pump 7 drain pipe 8 circulation pump 9 drain pipe 10 annular water supply

Description of reference numerals in drawings 9 to 11 in embodiment 3

1 housing 2 outer cylinder 21 outer cylinder tip 22 annular concave tank 23 sealing cover plate 3 inner cylinder 4 door body 5 window packing 6 drainage pump 7 drainage pipe 8 circulation pump 9 water discharge pipe 10 annular water supply 101 injection port

Claims (29)

A spray system for a drum washing machine comprising a housing, an outer cylinder and an inner cylinder installed in order from outside to inside, comprising:
The spray system includes a circulation pump, an outflow pipe, and an annular impermeable structure;
The annular water impermeable structure is installed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, thereby forming an annular water supply having injection ports between the peripheral edge of the outer cylinder port and the annular water impervious structure. come to be formed,
the circulation pump has a water supply port communicating with the outer cylinder, and a water outlet communicating with the annular water supply via the water discharge pipe;
A spray system for a drum washing machine, wherein, in operation, the circulation pump pumps wash water in the outer cylinder to the water ring, and the wash water is injected into the inner cylinder by the injection ports. The spray system for a drum washing machine as claimed in claim 1, wherein the annular waterproof structure is an annular rib installed on the inner wall of the outer cylinder. The spray system for a drum washing machine as claimed in claim 1, wherein the annular waterproof structure is an annular rib installed on the outer wall of the inner cylinder. The spray system for a drum washing machine as claimed in claim 1, wherein the annular waterproof structure comprises an annular rib installed on the inner wall of the outer cylinder and an annular rib installed on the outer wall of the inner cylinder. 2. The spray for drum washing machine as claimed in claim 1, wherein the injection port is provided with a flow guide structure for injecting washing water entering the annular water supply into the inner cylinder in the form of an annular waterfall. system. 6. The spray system for drum washing machine as claimed in claim 5, wherein the flow guide structure is installed at the periphery of the barrel opening. The spray for drum washing machine according to claim 5, wherein a window packing is provided between the housing opening and the outer cylinder opening of the drum washing machine, and the flow guide structure is installed on the window packing. system. The water outlet of the circulation pump is further communicated with the drain pipe of the drum washing machine,
A first shut-off valve is disposed in the outflow pipe for selectively opening or closing the outflow pipe, and a second shut-off valve in the drain pipe for selectively opening or closing the outflow pipe. A spray system for a drum washing machine according to any one of the preceding claims, wherein a is arranged. The spray 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 of the drum washing machine by the three-way valve. A spray system for a drum washing machine according to claim 1. A drum washing machine comprising a washing machine body, said drum washing machine further comprising the spray system according to any one of claims 1 to 9. A drum washing machine comprising a housing, an outer cylinder fixedly installed on the housing, an inner cylinder rotatably installed on the outer cylinder, and a window packing connected between the housing and the outer cylinder. A spray system for an aircraft, comprising:
The spray system includes a circulation pump, a water discharge pipe, and an annular concave tank installed at the tip of the outer cylinder,
The window packing has a shielding portion in which the annular recessed tank and the annular water channel are formed, and an injection port is provided thereon,
the circulation pump has a water supply port communicating with the outer cylinder, and a water outlet communicating with the annular water supply via the water discharge pipe;
A spray system for a drum washing machine, wherein, in operation, the circulation pump pumps wash water in the outer cylinder to the water ring, and the wash water is injected into the inner cylinder by the injection ports. 12. The spray system for a drum washing machine as claimed in claim 11, wherein the annular recessed tub and the water outlet pipe are communicated through a connecting structure, or the annular recessed tub is directly communicated with the water outlet pipe. 12. The spray system for a drum washing machine as claimed in claim 11, wherein said annular recess is molded integrally with said outlet pipe. 12. The spray system for a drum washing machine as claimed in claim 11, wherein said injection port is a slit structure on said shield. 12. The spray system for a drum washing machine as set forth in claim 11, wherein said injection port has a guide structure for obliquely injecting washing water entering said annular water supply into said inner cylinder. 12. The spray system for a drum washing machine as claimed in claim 11, wherein said injection port has an injection member for forming wash water entering said annular water supply into a uniform annular water curtain and then injecting it into said inner cylinder. The water outlet of the circulation pump is further communicated with the drain pipe of the drum washing machine,
A first shut-off valve is disposed in the outflow pipe for selectively opening or closing the outflow pipe, and a second shut-off valve in the drain pipe for selectively opening or closing the outflow pipe. A spray system for a drum washing machine according to any one of claims 11 to 16, wherein a is arranged. The spray 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 of the drum washing machine by the three-way valve. A spray system for a drum washing machine according to claim 1. A drum washing machine provided with a washing machine body, said drum washing machine further comprising a spray system according to any one of claims 11 to 18. A spray system for a drum washing machine comprising a housing, an outer cylinder and an inner cylinder installed in order from outside to inside, comprising:
The spray system includes a circulation pump, a water discharge pipe, an annular groove installed at the tip of the outer cylinder, and a sealing cover plate;
The sealing cover plate and the annular recess form an annular channel in which the injection port is installed,
The circulating pump has a water inlet communicating with the outer cylinder and a water outlet communicating with the annular water supply via the water outlet pipe,
A spray system for a drum washing machine, wherein, in operation, the circulation pump pumps wash water in the outer cylinder to the annular water channel so that the wash water is sprayed into the inner cylinder by the spouts. The annular recessed tank and the water discharge pipe are communicated through a connection structure, or the annular recessed tank is directly communicated with the water discharge pipe, or the annular recessed tank and the water discharge pipe are formed integrally. 21. A spray system for a drum washing machine according to claim 20. 21. The spray system for a drum washing machine as set forth in claim 20, wherein the injection port is a slit structure opened on the sealing cover plate. 21. The spray system for a drum washing machine as set forth in claim 20, wherein the injection port has a slit structure opened inside the annular recess. 21. The spray system for a drum washing machine as claimed in claim 20, wherein the injection port is a slit structure formed between the sealing cover plate and the annular recess. The spray system for a drum washing machine according to any one of claims 20 to 24, wherein said injection port has a guide structure for obliquely injecting washing water entering said annular water supply into said inner cylinder. The drum according to any one of claims 20 to 24, wherein the injection port has an injection member for forming a uniform annular water curtain of wash water entering the annular water supply and then injecting the same into the inner cylinder. Spray system for washing machine. The water outlet of the circulation pump is further communicated with the drain pipe of the drum washing machine,
A first shut-off valve is disposed in the outflow pipe for selectively opening or closing the outflow pipe, and a second shut-off valve in the drain pipe for selectively opening or closing the outflow pipe. A spray system for a drum washing machine according to any one of claims 20 to 24, wherein a is arranged. 25. The spray system further comprises a three-way valve, and the water outlet of the circulation pump is selectively communicated with the water outlet pipe or the drain pipe of the drum washing machine by the three-way valve. A spray system for a drum washing machine according to claim 1. A drum washing machine provided with a washing machine body, said drum washing machine further comprising a spray system according to any one of claims 20-28.

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