CN110607655B - Front-loading washing machine and its inner drum assembly - Google Patents

Abstract

The invention belongs to the technical field of clothing treatment equipment, and specifically provides a drum washing machine and an inner drum assembly thereof. The invention aims to solve the problem that the existing circulating spray device affects the user to observe the clothes in the drum washing machine through the glass observation window. The inner cylinder assembly of the present invention comprises an inner cylinder and a transmission shaft which are coaxially fixedly connected together or integrally formed; the transmission shaft is provided with a channel along its axial direction; A plurality of injection holes are aligned; one end of the transmission shaft is abutted against the bottom end of the inner cylinder, and the passage and the plurality of injection holes are thus communicated. The drum washing machine with the inner tub assembly of the present invention can avoid the situation that the washing water sprayed from the jet holes completely covers the front end of the inner tub, so that the user can clearly observe the washing condition of the clothes in the inner tub through the glass observation window.

Description

Front-loading washing machine and its inner drum assembly

technical field

The invention belongs to the technical field of clothing treatment equipment, and specifically provides a drum washing machine and an inner drum assembly thereof.

Background technique

The existing drum washing machine originated in Europe, and it mainly includes a box body, an outer tub and an inner tub from outside to inside. Front-loading washing machines work in a similar way to the principle of hammering the laundry. When working, the inner cylinder rotates under the drive of the drive motor. With the rotation of the inner drum, the clothes are continuously lifted and dropped in the drum, and then lifted and dropped again, doing repeated movements. Under the combined 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 document with 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 opening of the water tank. Multiple jets at the edge. The circulation path can supply the washing water to the plurality of spray ports from the bottom end of the water tank, and then spray the washing water into the drum (inner drum) to perform circulating washing of the clothes.

However, the circulating spray device (specifically, the nozzle or the water spray port) of the existing drum washing machine is arranged near the front end of the outer tub, and the washing water is sprayed into the inner tub from the outer tub port. When the user observes the clothes from the glass observation window, the sprayed water will affect the user's sight, so that the user cannot know the current washing condition of the clothes.

Accordingly, there is a need in the art for a new front-loading washing machine and its inner tub assembly to solve the above problems.

SUMMARY OF THE INVENTION

In order to solve the above problems in the prior art, that is, in order to solve the problem that the existing circulating spray device affects the user to observe the clothes in the drum washing machine through the glass observation window, the present invention provides an inner drum assembly of the drum washing machine. The barrel assembly includes an inner barrel and a transmission shaft that are coaxially fixed together or made in one piece; the transmission shaft is provided with a channel along its axis direction; the bottom end of the inner barrel is provided with a plurality of channels aligned with the channel injection holes; one end of the transmission shaft abuts against the bottom end of the inner cylinder, and the passage and the plurality of injection holes are thus communicated.

In a preferred technical solution of the above-mentioned inner cylinder assembly, the transmission shaft includes a front part and a rear part, and the diameter of the channel in the rear part is larger than the diameter of the channel in the front part, so as to increase the The area of the channel projected onto the rear end of the inner barrel.

In a preferred technical solution of the above-mentioned inner cylinder assembly, the inner cylinder assembly further includes a mounting bracket, the mounting bracket includes an inner connecting part and an outer connecting part, and the mounting bracket is fixed to the front part through the inner connecting part Connected or integrally made, the mounting bracket is fixedly connected or integrally made with the inner cylinder through the outer connecting portion.

In a preferred technical solution of the above-mentioned inner cylinder assembly, the inner cylinder assembly further comprises a sealing ring arranged between the transmission shaft and the inner cylinder, and the transmission shaft and the inner cylinder are clamped by clamping the sealing ring. The ring achieves a sealed connection.

In the preferred technical solution of the above-mentioned inner cylinder assembly, an annular groove is provided at one end of the transmission shaft close to the inner cylinder, and the annular groove is used for accommodating the sealing ring.

In the preferred technical solution of the above inner cylinder assembly, one of the plurality of injection holes is disposed at the axis of the inner cylinder and points to the inner cylinder opening of the inner cylinder; the remaining injection holes surround the inner cylinder. The axes of the barrels are arranged symmetrically and respectively point to the side walls of the inner barrel.

In addition, the present invention also provides a drum washing machine, the drum washing machine comprising a water supply device and the inner drum assembly according to any one of the preferred technical solutions of the inner drum assembly, the water supply device is used to supply water to the channel .

In the preferred technical solution of the above-mentioned drum washing machine, the water supply device is a circulating pump, the water inlet of the circulating pump leads into the outer tub, and the water outlet of the circulating pump communicates with the channel.

In a preferred technical solution of the above-mentioned drum washing machine, the drum washing machine further includes a circulating water pipe, and the circulating pump is communicated with the channel through the circulating water pipe.

In the preferred technical solution of the above drum washing machine, the water supply device is a water inlet valve, the water inlet valve port of the water inlet valve is connected to the water source, and the water outlet valve port of the water inlet valve is communicated with the channel.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, by arranging channels along the axis of the transmission shaft, a plurality of injection holes are arranged at the bottom end of the inner cylinder at positions corresponding to the channels, The spray hole can spray the washing water provided by the channel into the inner cylinder from the bottom end of the inner cylinder, which avoids the situation that the washing water sprayed from the injection hole completely covers the front end of the inner cylinder, and enables the user to clearly observe the inner cylinder through the glass observation window. The washing condition of the laundry in the tub.

In a feasible embodiment of the present invention, the front-loading washing machine of the present invention includes a case, an outer tub and a circulation pump fixedly arranged in the case, and the inner tub is pivotally arranged in the outer tub through a transmission shaft . The water inlet of the circulation pump leads into the outer cylinder, and the water outlet of the circulation pump is communicated with the end of the passage away from the outer cylinder body. When working, the circulating pump pumps the washing water in the outer cylinder to a plurality of spray holes through the channel, and the multiple spray holes spray the washing water into the inner cylinder.

Description of drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

1 is a front view of a drum washing machine in an embodiment of the present invention;

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

Fig. 3 is a sectional view along the B-B direction in Fig. 2;

4 is a schematic structural diagram of a transmission shaft in an embodiment of the present invention;

FIG. 5 is an enlarged view of the C part in FIG. 2 .

List of reference numbers:

1. Box body; 2. Outer cylinder; 3. Inner cylinder; 31. Injection hole; 4. Transmission shaft; 41, Channel; 411, First channel; 412, Second channel; 413, Third channel; Hole; 43, annular groove; 5, drive motor; 6, door body; 61, glass observation window; 7, sealing window gasket; 8, connecting pipe; 9, drain pump; 10, drain pipe; 11, circulating pump; 12. Circulating water pipe; 13. Mounting frame; 14. Sealing ring.

Detailed ways

It should be understood by those skilled in the art that the embodiments in this section are only used to explain the technical principles of the present invention, and are not used to limit the protection scope of the present invention. For example, although the various components in the drawings are drawn according to a certain proportional relationship, this proportional relationship is not static, and those skilled in the art can adjust them as needed to adapt to specific applications, and the adjusted technology The solution will still fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection The connection, or the integral connection, can be a direct connection, an indirect connection through an intermediate medium, or an internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in FIG. 1 and FIG. 2 , the drum washing machine of the present invention mainly includes a box body 1 , an outer cylinder 2 , an inner cylinder assembly (not marked in the figure), a driving motor 5 , a door body 6 , a sealing window gasket 7 , and a connecting pipe 8 , drain pump 9 and drain pipe 10. Wherein, the outer cylinder 2 is fixedly arranged in the box body 1 , and the inner cylinder assembly includes an inner cylinder 3 and a transmission shaft 4 which are connected together or made in one piece. The inner cylinder 3 is rotatably arranged in the outer cylinder 2 through the transmission shaft 4 , the driving motor 5 is fixedly arranged on the outer side of the outer cylinder 2 , and the driving motor 5 is coaxially and fixedly connected with the transmission shaft 4 . The door body 6 is pivotally connected to the box body 1 . The sealing window gasket 7 is provided between the box body 1 and the outer cylinder 2 . The connecting pipe 8 , the drain pump 9 and the drain pipe 10 are all arranged in the casing 1 . One end of the connection pipe 8 is connected with the lower part of the outer cylinder 2 (the lower part of the outer cylinder 2 in FIG. 2 ), and the other end of the connection pipe 8 is connected with the water inlet of the drain pump 9, and the water inlet of the drain pump 9 is therefore connected with the outer cylinder 2. Connected. The water outlet of the drain pump 9 is connected to one end of the drain pipe 10, and the other end of the drain pipe 10 leads to the outside. The drain pump 9 can drain the washing water in the outer tub 2 through the drain pipe 10 .

In addition, those skilled in the art can understand that, when each part of the drain pipe 10 is lower than the inner bottom end of the outer cylinder 2, those skilled in the art can also omit the drain pump 9 and replace the drain pump 9 as required. Replaced with a shut-off valve. When the drum washing machine needs to drain water, the shut-off valve is opened, so that the washing water in the outer tub 2 is automatically drained from the drain pipe 10 under the action of its own gravity.

As shown in Figure 2, the front end of the box body 1 (the right side of the box body 1 in Figure 2) is provided with a box body port (not marked in the figure), and the front end of the outer cylinder 2 (the right side of the outer cylinder 2 in Figure 2) is provided with There is an outer cylinder opening (not marked in the figure), and the front end of the inner cylinder 3 (the right side of the inner cylinder 3 in FIG. 2 ) is provided with an inner cylinder opening (not marked in the figure). One end of the sealing window gasket 7 is sealingly connected to the edge of the box body opening, and the other end of the sealing window gasket 7 is sealingly connected to the edge of the outer cylinder opening. The door body 6 is pivotally arranged on the box body 1 , and when the door body 6 is closed, the box body opening can be closed to prevent the washing water in the outer tub 2 from overflowing from the box body opening.

Continuing to refer to FIG. 2 , the door body 6 includes a glass observation window 61 . When the door body 6 closes the box body opening, the user can observe the condition of the clothes in the inner tub 3 through the glass observation window 61 .

As mentioned above, the inner cylinder assembly of the present invention mainly includes the inner cylinder 3 and the transmission shaft 4 . Wherein, the bottom end of the inner cylinder 3 is fixedly connected with one end of the transmission shaft 4 .

As shown in FIG. 2 and FIG. 3 , the bottom end of the inner cylinder 3 is provided with five injection holes 31 aligned with the transmission shaft 4 near the axis. One of the injection holes 31 is arranged on the axis of the inner cylinder 3 and points to the inner cylinder opening; the remaining four injection holes 31 are symmetrically arranged around the axis of the inner cylinder 3 and point to the side walls of the inner cylinder 3 respectively. In the preferred technical solution of the present invention, each spray hole 31 is flat, so that the washing water sprayed from the spray hole 31 has a waterfall shape. In addition, those skilled in the art can also set the injection hole 31 in any other feasible form as required, for example, set the injection hole 31 in a circular hole shape, an elliptical hole shape, a triangular hole shape, and the like. In addition, those skilled in the art can also appropriately adjust the number of the injection holes 31 as required, for example, adjust the number of the injection holes 31 to three, six, seven, nine, and so on.

As shown in FIG. 4, the transmission shaft 4 includes a front part and a rear part. The front part and the rear part are demarcated by the dotted line in FIG. 4 , the part to the left of the dotted line is the front part, and the part to the right of the dotted line is the rear part. Further, the transmission shaft 4 is provided with a channel 41 running through its axial direction, and the channel 41 includes a first channel 411 , a second channel 412 and a third channel 413 that are communicated in sequence. The third channel 413 is located at the rear of the transmission shaft 4 , and the diameter of the third channel 413 is larger than the diameters of the first channel 411 and the second channel 412 . The first channel 411 is provided offset from the axis of the transmission shaft 41 . Furthermore, the left end of the transmission shaft 41 is provided with a threaded hole 42 , and the transmission shaft 4 is coaxially fixed to the rotor of the driving motor 5 through the threaded hole 42 . The right end of the transmission shaft 41 is provided with an annular groove 43 for accommodating the sealing ring 14 . In addition, those skilled in the art can also appropriately adjust the positions of the first channel 411 and the threaded hole 42 as required, for example, the first channel 411 and the transmission shaft 4 are coaxially arranged, so that the threaded hole 42 deviates from the position of the transmission shaft 4 Pivot settings.

As shown in FIG. 5 , the inner cylinder assembly of the present invention further includes a mounting bracket 13 . The mounting bracket 13 includes an inner connecting part (not shown in the figure) and an outer connecting part (not shown in the figure). The mounting bracket 13 is fixedly connected to the front portion of the transmission shaft 4 through the inner connecting portion. Those skilled in the art can understand that the mounting frame 13 and the transmission shaft 4 may be connected together by any feasible connection manner, such as welding machine, screw connection, interference connection and the like. Alternatively, those skilled in the art can also make the mounting bracket 13 and the transmission shaft 4 integrally as required. The mounting bracket 13 is fixedly connected to the inner cylinder 3 through the outer connecting portion. Those skilled in the art can understand that the mounting frame 13 and the inner cylinder 3 may be connected together by any feasible connection manner, such as welding machine, clip connection, bolt connection and the like. Alternatively, those skilled in the art can also make the mounting bracket 13 and the inner cylinder 3 integrally as required.

Those skilled in the art can understand that the mounting bracket 13 can be any feasible structure, for example, a Y-shaped structure, a triangular structure, a disc structure, and the like.

As shown in Figures 2 and 5, in the installed state, the left end of the transmission shaft 4 passes through the rotor of the driving motor 5 and then abuts against the right end of the connecting piece (not shown in the figure), and the bolt passes through the installation on the connecting piece. The holes are then screwed together with the threaded holes 42 on the drive shaft 4 and thus fasten the drive shaft 4 and the rotor of the drive motor 5 together. Wherein, the diameter of the connecting piece is larger than the diameter of the inner hole of the rotor of the driving motor 5 , so as to prevent the transmission shaft 4 from jumping out of the rotor of the driving motor 5 .

Continue to refer to Figures 2 and 5, in the installed state, the transmission shaft 4 is fixed together by the mounting bracket 13 and the inner cylinder 3, and the fixed transmission shaft 4 and the inner cylinder 3 press the sealing ring 14 to realize the transmission shaft. 4 and the sealed connection between the inner cylinder 3. Wherein, the injection holes 31 on the inner cylinder 3 are all surrounded by the sealing ring 14 to ensure that each injection hole 31 can communicate with the third channel 413 .

Those skilled in the art can understand that the reason why the diameter of the third channel 413 is larger than the diameters of the first channel 411 and the second channel 412 is that, firstly, the third channel 413 is formed at the bottom of the inner cylinder 3 along the axial direction. The projected area on the end should be as large as possible, so as to set more injection holes 31 on the inner cylinder 3; secondly, to avoid reducing the bearing capacity of the transmission shaft 4 when the diameter of the channel 41 is made large enough, in other words, By connecting the mounting bracket 13 with the front portion of the transmission shaft 4 having the second channel 412 , the bearing strength of the transmission shaft 4 is ensured.

Continuing to refer to FIG. 2 , the drum washing machine of the present invention further includes a circulating pump 11 and a circulating water pipe 12 . Wherein, the circulating pump 11 is preferably arranged in the casing 1 and is fixedly connected with the casing 1 . Alternatively, those skilled in the art can also make the circulating pump 11 and the outer cylinder 1 fixedly connected as required. The water inlet of the circulating pump 11 is connected to the connecting pipe 8 and thus leads to the inside of the outer cylinder 2 . The water outlet of the circulating pump 11 is connected and communicated with one end of the circulating water pipe 12 , and the other end of the circulating water pipe 12 is communicated with the channel 41 . During operation, the circulating pump 11 sends the washing water in the outer tub 2 to the channel 41 through the circulating water pipe 12 , and the plurality of spray holes 31 spray the washing water onto the clothes in the inner tub 3 .

As shown in FIG. 2 and FIG. 5 , the water outlet end of the circulating water pipe 12 is sealedly connected with the connector, and the connector can freely rotate relative to the water outlet end of the circulating water pipe 12 .

Further, in the preferred embodiment of the present invention, the water pressure provided by the circulating pump 11 can make part of the washing water sprayed from the spray holes 31 fall onto the glass observation window 61 and the sealing window gasket 7 . In order to clean the glass observation window 61 and the sealing window gasket 7, to avoid the accumulation of detergent on the glass observation window 61 and the sealing window gasket 7, which will affect the cleanliness of the glass observation window 61 and the sealing window gasket 7, thereby affecting the user's observation through the glass. The window 61 observes the washing condition of the laundry in the inner tub 3 .

Those skilled in the art can understand that the circulating pump 11 of the present invention can pump the washing water in the outer tub 2 to the channel 41 , and then spray the washing water into the inner tub through the plurality of spray holes 31 communicating with the channel 41 . 3 in. Therefore, compared with the drum washing machine in the prior art in which the spray holes/nozzles are arranged near the front end of the outer tub 2, the drum washing machine of the present invention avoids the water flow ejected from the spray holes/nozzles from accumulating at the front end of the outer tub 2, preventing the user from viewing the inner surface. The situation of the line of sight of the clothes in the tub 3. Further, the washing water sprayed from the plurality of spray holes 31 of the present invention can also clean the glass observation window 61 and the sealing window gasket 7 , ensuring the cleanliness of the glass observation window 61 and the sealing window gasket 7 . Furthermore, the washing water sprayed from each spray hole 31 will rotate with the rotation of the inner cylinder 3 to form an annular spray water flow, which optimizes the spray effect.

Although not shown in the drawings, the present invention also provides another embodiment of the inner cylinder assembly, which is different from the above preferred embodiment in that the inner cylinder assembly does not have the mounting bracket 13, and the transmission shaft 4 is directly fixed to the inner cylinder 3 connected or made in one piece. Wherein, in the case where the transmission shaft 4 and the inner cylinder 3 are made in one piece, the sealing ring 14 is also omitted. Alternatively, those skilled in the art can also make the transmission shaft 4 pass through the inner cylinder 3 as required, so that the transmission shaft 4 directly sprays the washing water into the inner cylinder 3 .

Although not shown in the figure, the present invention also provides another embodiment of the drum washing machine. Those skilled in the art can omit the circulating pump 11 as required, and make the water inlet end of the circulating water pipe 12 and the water outlet of the water inlet valve. The valve ports are connected. When the water inlet valve port of the water inlet valve is connected to an external water source, the water inlet valve can provide tap water to the channel 41 through the circulating water pipe 12 , thereby enabling the plurality of spray holes 31 to spray tap water into the inner cylinder 3 .

It should be noted that, in the case where the spray structure can be realized to spray the washing water into the inner drum 3 from the rear and/or the middle of the inner drum 3, the technical solutions formed by the above technical solutions and the above technical solutions are divided. The technical solutions formed by the combination between the two should fall within the protection scope of the present invention. The combination between the above technical solutions includes the combination of complete technical solutions, and also includes the combination of part of technical features in one technical solution and part of technical features in another technical solution.

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

Claims (9)

1. An inner drum assembly of a drum washing machine, characterized in that, the inner drum assembly comprises an inner drum and a transmission shaft that are coaxially fixed together or made in one piece; The transmission shaft is provided with a channel along its axis direction; The bottom end of the inner cylinder is provided with a plurality of injection holes aligned with the channel; One end of the transmission shaft abuts against the bottom end of the inner cylinder, and the passage and the plurality of injection holes are thus communicated; Wherein, the transmission shaft includes a front part and a rear part, the diameter of the channel in the rear part is larger than the diameter of the channel in the front part, so as to increase the projection of the channel to the rear end of the inner cylinder the area above; Wherein, the channel includes a first channel, a second channel and a third channel communicated in sequence, the third channel is located at the rear of the transmission shaft, and the first channel and the second channel are located at the back of the transmission shaft In the front part, the first channel is arranged offset from the axis of the transmission shaft. 2 . The inner tub assembly of the front-loading washing machine according to claim 1 , wherein the inner tub assembly further comprises a mounting bracket, the mounting bracket includes an inner connecting part and an outer connecting part, and the mounting bracket passes through the The inner connecting part is fixedly connected or integrally formed with the front part, and the mounting bracket is fixedly connected or integrally formed with the inner cylinder through the outer connecting part. 3 . The inner tub assembly of the front-loading washing machine according to claim 1 , wherein the inner tub assembly further comprises a sealing ring arranged between the transmission shaft and the inner tub, the transmission shaft and the inner tub. 4 . The inner cylinder is sealed and connected by clamping the sealing ring. 4 . The inner tub assembly of the front-loading washing machine according to claim 3 , wherein an annular groove is provided at one end of the transmission shaft close to the inner tub, and the annular groove is used for accommodating the sealing ring. 5 . 5. The inner tub assembly of a front-loading washing machine according to any one of claims 1 to 4, wherein one of the plurality of spray holes is disposed at the axis of the inner tub and directed toward the inner tub The inner cylinder opening of the cylinder; the remaining spray holes are symmetrically arranged around the axis of the inner cylinder and respectively point to the side walls of the inner cylinder. 6 . A drum washing machine, characterized in that, the drum washing machine comprises a water supply device and the inner tub assembly according to any one of claims 1 to 5 , and the water supply device is used for supplying water to the channel. 7 . 7 . The drum washing machine according to claim 6 , wherein the water supply device is a circulating pump, the water inlet of the circulating pump leads into the outer tub, and the water outlet of the circulating pump communicates with the channel. 8 . 8 . The front-loading washing machine according to claim 7 , wherein the front-loading washing machine further comprises a circulating water pipe, and the circulating pump communicates with the channel through the circulating water pipe. 9 . 9 . The drum washing machine according to claim 6 , wherein the water supply device is a water inlet valve, the water inlet valve port of the water inlet valve is connected to a water source, and the water outlet valve port of the water inlet valve is connected to the water source. 10 . channel connection.

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