CN111519398A

CN111519398A - Drum washing machine and detergent feeding method

Info

Publication number: CN111519398A
Application number: CN201911389740.8A
Authority: CN
Inventors: 黎辉; 章发; 黄琳
Original assignee: Ningbo Jide Electrical Appliance Co Ltd
Current assignee: Ningbo Jide Electrical Appliance Co Ltd
Priority date: 2019-02-01
Filing date: 2019-12-30
Publication date: 2020-08-11
Anticipated expiration: 2039-12-30
Also published as: CN212052006U; CN111519398B

Abstract

The invention provides a drum washing machine and a detergent feeding method, wherein the drum washing machine comprises a door body, an outer barrel and an inner barrel, a transparent observation window is arranged on the door body, and the drum washing machine is characterized in that an accommodating tank and a detergent box arranged in the accommodating tank are arranged on the observation window, the detergent box comprises a mixing cavity and a flow guide cavity arranged below the mixing cavity, the flow guide cavity is communicated with the mixing cavity through a siphon device, a water inlet device is arranged above the mixing cavity and used for injecting water into the mixing cavity, the detergent box comprises a rear end wall, and the rear end wall does not exceed the rear end of the observation window. The drum washing machine provided by the invention is convenient for a user to visually observe the putting state of the detergent, and has the advantages of low cost, small implementation difficulty, good expansibility and good appearance appreciation.

Description

Drum washing machine and detergent feeding method

Technical Field

The invention relates to the technical field of washing equipment, in particular to a drum washing machine and a detergent feeding method.

Background

With the improvement of the living standard of people, washing equipment such as washing machines, dish washing machines and the like has entered the daily life of people; taking a drum type washing machine as an example, the drum type washing machine performs washing by putting detergent, wash water, and laundry into the inside of a drum, which has a plurality of tumbling bars formed thereon, to rotate around a horizontal axis, so that washing of the laundry is performed by falling impact and friction after the laundry is lifted by the tumbling bars.

The door of the washing machine is a common accessory of the drum washing machine, and has the functions of preventing water in the drum from overflowing and facilitating a user to know the running state of the washing machine at any time. The door body of the traditional drum washing machine generally only has the functions of an observation window and sealing water, and a material box for putting detergent is required to be designed in the washing machine alone to realize the putting of the detergent.

The traditional drum washing machine material box mainly comprises a detergent box (comprising an upper material box cover, a middle material box cover, a lower material box cover and the like) and a drawer assembly (such as a drawer, a drawer handle, a drawer panel and the like), has numerous parts, high cost, large difficulty in appearance assembly process, poor expansibility (if other functions are added, the assembly needs to be integrally replaced), and a front panel has a dividing line, so that the ornamental value of a product is reduced.

In addition, how to arrange a simple detergent box fixing device and a drum washing machine thereof which meet the requirements of the reliability of dissolving and putting detergent is a technical problem to be solved by research and development personnel.

Disclosure of Invention

In view of the above, the present invention is directed to a drum washing machine and a detergent feeding method.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a drum washing machine comprises a door body, an outer barrel and an inner barrel, wherein a transparent observation window is arranged on the door body, and the drum washing machine is characterized in that an accommodating groove and a detergent box arranged in the accommodating groove are arranged on the observation window, the detergent box comprises a mixing cavity and a flow guide cavity arranged below the mixing cavity, the flow guide cavity is communicated with the mixing cavity through a siphon device, a water inlet device is arranged above the mixing cavity and used for injecting water into the mixing cavity, the detergent box comprises a rear end wall, and the rear end wall does not exceed the rear end of the observation window.

Furthermore, the diversion cavity can be communicated with the inner barrel through a throwing switch, and the throwing switch is arranged at an opening of the diversion cavity communicated with the inner barrel.

Further, the water inlet device comprises any one or more of a water inlet structure of the front outer barrel, a water inlet structure of the drying tunnel and a water inlet structure on the door body and the door seal assembly.

Further, the outer barrel comprises an outer barrel limiting plate, the outer barrel limiting plate is arranged on the front side of the outer barrel and is in limiting connection with the door seal assembly connecting plate, a drying channel is arranged on the outer side of the outer barrel, the rear end of the drying channel is communicated with the inner barrel, the front end of the drying channel is communicated with a condensation channel, the inlet end of the condensation channel is communicated with the inner barrel, and the inlet end is arranged at the connection position of the outer barrel limiting plate and the door seal assembly connecting plate.

Further, the water inlet device is arranged on one side of the condensation channel close to the inner barrel body.

Further, the water inlet device is communicated with a condensing channel, and an inlet end of the condensing channel is formed above the detergent box.

Furthermore, the water inlet device comprises a first flowing water pipe and a second flowing water pipe, the first flowing water pipe is arranged on the door body, and the second flowing water pipe is arranged on the door seal assembly.

Furthermore, the first flowing water pipe is communicated with the second flowing water pipe through an expansion pipe, the expansion pipe is arranged at the hinged joint of the door body and the door seal assembly, and a water outlet of the first flowing water pipe is arranged above the observation window.

Furthermore, the lower wall of the mixing cavity is a second guide plate, a siphon is arranged on one side of the second guide plate far away from the rear end wall, a siphon cover is arranged at the upper end of the siphon, a flowing water gap is formed at the joint of the siphon cover and the siphon, an upper end port of the siphon is communicated with the flowing water gap, and a lower end port of the siphon is communicated with the flow guide cavity.

Further, a first water outlet is formed at the upper end of the rear end wall, and liquid in the mixing cavity can flow to the inner barrel through the first water outlet.

Further, the siphon is vertically arranged in the mixing cavity, the upper end of the mixing cavity is provided with an opening, and the opening at the upper end of the siphon is lower than the opening at the upper end of the mixing cavity.

Further, the second baffle slopes downwardly from an end proximate the rear end wall to an end proximate the siphon tube.

Further, a first guide plate is arranged at the bottom of the guide cavity and is arranged in an inclined downward structure from front to back.

Furthermore, a baffle structure is arranged on the door seal component close to the outer barrel, and the baffle structure is connected with the door seal component and extends from top to bottom to separate the upper space of the mixing cavity.

A method for dispensing detergent for the drum washing machine, comprising:

s1, adding a detergent into the mixing cavity;

s2, judging whether the door body is completely closed, if so, executing a step S3;

s3, closing the feeding switch, feeding washing water into the mixing cavity through the water inlet device, and allowing the washing water and the detergent to flow into the inner barrel through a first water outlet on the detergent box after being mixed;

s4, stopping water injection by the water inlet device, opening the throwing switch, and allowing the detergent mixed liquid in the mixed cavity to flow into the inner barrel after flowing to the flow guide cavity through the siphon device;

s5, continuously putting washing water into the mixing cavity through the water inlet device;

and S6, after the water injection of the water inlet device is finished, closing the throwing switch after a preset time t.

Further, the preset time t is 10s-30 s.

Compared with the prior art, the drum washing machine has the following advantages:

according to the drum washing machine, the detergent box is moved to the door body from a traditional door body assembly, the detergent box is accommodated or fixed through the accommodating groove formed in the observation window, and the detergent box is provided with the mixing cavity and the flow guide cavity which are arranged in an up-and-down structure, and the siphon structure is arranged between the mixing cavity and the flow guide cavity, so that the dissolving and putting reliability of the detergent is guaranteed, and the cleanness degree of washing clothes is improved. The detergent box can be integrally formed with the observation window, so that a user can observe the dissolving and putting condition of the detergent through the observation window and can also be used as an independent accessory to be placed in the accommodating groove on the observation window, and the purposes of more visual observation, low cost, small realization difficulty, good expansibility and good appearance ornamental property are achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a drum washing machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of a node at point A in FIG. 1;

FIG. 3 is a schematic diagram illustrating a variation of a water inlet structure of a detergent dispensing device according to an embodiment of the present invention;

fig. 4 is a schematic view of a water inlet structure of the detergent dispensing device according to embodiment 2 of the present invention;

FIG. 5 is a schematic side view of a water inlet structure of a detergent dispensing device according to embodiment 2 of the present invention;

fig. 6 is a schematic front view of a water inlet structure of a detergent dispensing device according to embodiment 2 of the present invention;

FIG. 7 is a schematic side view of a water inlet structure of a detergent dispensing device according to embodiment 3 of the present invention;

fig. 8 is a schematic view of a water inlet structure of a detergent dispensing device according to embodiment 4 of the present invention;

description of reference numerals:

1-door body, 2-observation window, 3-holding tank, 4-detergent box, 5-water inlet device, 501-first water flowing pipe, 502-second water flowing pipe, 503-telescopic pipe, 6-first water outlet, 7-mixing cavity, 8-outer barrel, 9-inner barrel, 10-water flowing gap, 11-siphon, 12-diversion cavity, 13-first diversion plate, 14-throwing switch, 15-rear end wall, 16-siphon cover, 17-water guiding pipe, 18-spray head, 19-door seal assembly connecting plate, 20-second diversion plate, 21-outer barrel limiting plate, 22-clothes taking and putting opening, 23-drying channel, 24-condensing channel and 25-inlet end.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "provided", "mounted", "connected" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the term "fixed" may be a bolted and/or screwed connection and/or a snap and/or a weld, which term is understood by a person skilled in the art as a matter of fact to have a special meaning in the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the embodiments of the present invention, the directional terms mentioned above are all based on the normal assembly and normal installation of the drum washing machine, wherein "up" refers to the upper direction or space of the drum washing machine, the "down" refers to the lower direction or space of the drum washing machine, the "horizontal" refers to the horizontal plane direction of the drum washing machine, and the "horizontal" direction is perpendicular to the "up-down" direction or the "vertical" direction.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Embodiment 1, as shown in fig. 1 to 3, the present invention discloses a drum washing machine, which includes an outer tub 8, an inner tub 9, and a door 1, wherein a transparent observation window 2 is disposed on the door 1, the inner tub 9 is rotatably disposed inside the outer tub 8, a door seal assembly is disposed at a front end of the outer tub 8, the door 1 is hinged to the door seal assembly and can seal a laundry taking and placing opening 22 of the outer tub 8, an accommodating tub 3 is disposed on the observation window 2, a detergent box 4 is disposed in the accommodating tub 3, the detergent box 4 includes a mixing chamber 7 and a diversion chamber 12, the diversion chamber 12 is disposed below the mixing chamber 7, the diversion chamber 12 is communicated with the mixing chamber 7 through a siphon device, an upper end of the mixing chamber 7 is disposed in an open manner, and the diversion chamber 12 can be communicated with the inner tub 9 through a placing switch 14, a water inlet device 5 is arranged above the mixing cavity 7, and the water inlet device 5 is used for injecting water into the detergent box 4.

As a preferred embodiment of the present invention, the water inlet device 5 may be disposed on the door assembly, or may be disposed on the outer tub 8.

The invention discloses a drum washing machine, which moves a detergent box from a traditional door body assembly to a door body, and holds or fixes the detergent box through a holding tank arranged on an observation window, wherein the detergent box is provided with a mixing cavity and a flow guide cavity which are arranged in an up-down structure, and a siphon structure is arranged between the mixing cavity and the flow guide cavity, so that the reliability of dissolving and putting the detergent is ensured, and the improvement of the cleaning degree of the washed clothes is facilitated. The detergent box can be integrally formed with the observation window, a user can observe the dissolving and putting condition of the detergent through the transparent observation window and can also be used as an independent accessory to be placed in the accommodating groove on the observation window, and therefore the purposes of more visual observation, low cost, small realization difficulty, good expansibility and good appearance appreciation are achieved.

In a preferred embodiment of the present invention, the detergent box 4 includes a rear end wall 15, the rear end wall 15 does not extend beyond the rear end of the observation window 2, a lower end of the rear end wall 15 is connected to a second flow guide plate 20, the second flow guide plate 20 is provided with a siphon tube 11 on a side away from the rear end wall 15, an upper end of the siphon tube 11 is provided with a siphon cover 16, the siphon cover 16 and the siphon tube 11 form a water gap 10 at a connection point, an upper end port of the siphon tube 11 is communicated with the water gap 10, a lower end port of the siphon tube 10 is communicated with the flow guide cavity 12, a first water outlet 6 is formed at an upper end of the rear end wall 15, and at least a portion of the mixed liquid in the mixing cavity 7 flows to the inner tub 9 through the first water outlet 6. This setting discloses a detergent box input structure, and this setting is through the volume that the mixed liquid of detergent in adjusting water installations's the inflow regulation detergent box flows to interior bucket, and need not artifically put in interior bucket, through the siphon device who sets up in the detergent box, and the user of being convenient for is with remaining mixed liquid flow to interior bucket in the mixed cavity to be favorable to realizing the automatic function of puting in of washing machine's detergent.

As a preferred embodiment of the present invention, the siphon 11 is vertically disposed in the mixing chamber 7 and is formed by extending the second baffle 20 upward, the upper end of the mixing chamber 7 is open, and the height of the upper end opening of the siphon 11 is lower than the opening of the upper end of the mixing chamber 7. This setting is convenient for the user on the one hand and places the detergent in mixing the cavity, and the device of also being convenient for simultaneously intaking's intaking flows into mixing the cavity, and on the other hand has also guaranteed that the upper end port flow direction water conservancy diversion chamber of mixed liquid in the mixing cavity through the siphon.

As a preferred embodiment of the present invention, the second baffle 20 is disposed in a structure inclined downward from an end near the rear end wall 15 to an end near the siphon tube 11. As an example of the present invention, the second baffle 20 is inclined at an angle of not more than 10 ° to the horizontal. This setting is convenient for the detergent can the intensive mixing dissolve in the hybrid chamber after the siphon flow direction water conservancy diversion chamber for detergent is dissolved more abundant, and has guaranteed the cleanliness in the hybrid chamber.

As a preferred embodiment of the present invention, a first guide plate 13 is disposed at the bottom of the guide cavity 12, the first guide plate 13 is disposed in a downward inclined configuration from front to back, and the throwing switch 14 is disposed at the end of the first guide plate 13, that is, the throwing switch (14) is disposed at the opening of the guide cavity (12) communicating with the inner tub (9). The automatic control of the detergent feeding is realized through the opening and closing of the feeding switch arranged on the guide cavity, on one hand, the reliability of the outflow of the detergent mixed liquid in the guide cavity 12 is ensured, on the other hand, the mixing proportion and the dissolution rate of the detergent mixed liquid in the mixed cavity can be further adjusted through the opening and closing of the feeding switch 14, the reliability of the dissolution of the mixed liquid is ensured, and when the feeding switch 14 is in a closed state, the mixed liquid still cannot flow out of the guide cavity even if the liquid level of the mixed liquid in the mixed cavity is higher than the upper port of the siphon; on the other hand, after the washing is finished, the putting switch 14 is completely opened, and the mixed liquid in the mixed cavity is completely discharged into the inner barrel through the siphon device, so that the sanitation and the tidiness of the interior of the washing machine are ensured, and the good appearance of the washing machine is maintained.

As a preferred embodiment of the present invention, the lower end of the water inlet device 5 is provided with a water conduit 7, and the water conduit 7 is used for flowing the inlet water of the water inlet device 5 to the detergent box 4 along the observation window 2. The arrangement further ensures the reliability of the water inlet device for injecting water into the detergent box.

In addition, in the present embodiment, the term "detergent" as used in the present invention refers to washing products such as washing powder, bleaching powder, softener, detergent, and bleaching agent, which are commercially available, and therefore, the description thereof is omitted since all of them are related to the prior art.

In embodiment 2, as shown in fig. 4 to 6, the outer tub 8 includes an outer tub limiting plate 21, the outer tub limiting plate 21 is disposed at a front side of the outer tub 8, the outer tub limiting plate 21 is connected to the door seal assembly connecting plate 19 in a limiting manner, a drying channel 23 is disposed at an outer side of the outer tub 8, a rear end of the drying channel 23 is communicated with the inner tub 9, a front end of the drying channel 23 is communicated with a condensation channel 24, an inlet end 25 of the condensation channel 24 is communicated with the inner tub 9, the inlet end 25 is disposed at a connection position of the outer tub limiting plate 21 and the door seal assembly connecting plate 19, the water inlet device 5 is disposed at a side of the condensation channel 24 close to the inner tub 9, and other structures are the same. This embodiment is through setting up the water inlet structure of outer bucket before, through set up water installations in the front on outer bucket, through the pipeline of outer bucket before rather than the pipeline flow direction detergent box of door seal subassembly, has further guaranteed the convenience of detergent box assembly.

Embodiment 3, as shown in fig. 7, the water inlet device 5 is communicated with the condensation channel 24, the inlet end 25 of the condensation channel 24 is formed above the detergent box 4, and the other structure is the same as embodiment 2. This setting is established water inlet of water installations on the drying tunnel, and this setting has increased the condensate water yield that is many in a gas cycle process, improves the condensation effect, also utilizes the condensate water once more simultaneously, improves the utilization ratio of water resource.

In embodiment 4, as shown in fig. 8, the water inlet device 5 includes a first flowing water pipe 501 and a second flowing water pipe 502, the first flowing water pipe 501 is disposed on the door body 1, the second flowing water pipe 502 is disposed on the door seal assembly, the first flowing water pipe 501 and the second flowing water pipe 502 are communicated through an extension pipe 503, the extension pipe 503 is disposed at the hinged joint of the door body 1 and the door seal assembly, a water outlet of the first flowing water pipe 501 is disposed above the observation window 2, and other structures are the same as other embodiments. The water inlet device is arranged on the door body and the door seal assembly, the water inlet is formed in the door body and is positioned above the detergent box, and water injected into the water inlet device is guided to the observation window through the telescopic pipe arranged at the door hinge and flows into the detergent box.

As a preferred embodiment of the present invention, the water inlet device 5 includes any one or more of a water inlet structure of the front outer tub, a water inlet structure of the drying tunnel, a door body, and a water inlet structure on the door seal assembly, and the multi-way water inlet device is regulated and controlled by a multi-way water inlet valve, for example, the three-way water inlet structure is regulated by a three-way water inlet valve.

As a preferred embodiment of the invention, a baffle structure is arranged on the door seal component (3) close to the outer barrel (8), and the baffle structure is connected with the door seal component (3) and extends from top to bottom to separate the upper space of the mixing cavity (7). The baffle structure can block some small clothes in the washing process, such as: socks, underwear and the like fall into the mixing cavity (7).

In addition, on the basis of the above structure, the embodiment further discloses a detergent feeding method, including:

s1, adding a detergent into the mixing cavity;

wherein, the user can open the door body 1 to manually put the detergent into the mixing cavity, or the washing machine can automatically put the detergent into the mixing cavity.

S2, judging whether the door body 1 is completely closed, if yes, executing a step S3;

when the door body 1 is completely closed, the subsequent feeding operation can be carried out; when the door body 1 is not completely closed, the washing machine continuously gives a prompt to a user as an optimal choice, and the user is prompted to close the door body 1.

Preferably, whether the door body is closed or not is judged by detecting the contact distance between the door body and the door seal assembly through a sensor.

S3, closing the feeding switch 14, feeding washing water into the mixing cavity 7 through the water inlet device 5, and allowing the washing water to flow to the inner barrel 9 through a first water outlet on the detergent box 4 after being mixed with the detergent;

at this time, the putting switch 14 is in a closed state, so that the detergent can be conveniently mixed and dissolved and then flows into the inner tub of the washing machine.

S4, stopping water injection by the water inlet device 5, opening the feeding switch 14, and allowing the detergent mixed liquid in the mixing cavity 7 to flow into the inner barrel 9 after flowing to the diversion cavity 12 through the siphon device.

At this time, the detergent is fully dissolved and diluted, and is generally controlled by adopting a preset time, wherein the preset time can be provided for a washing program or can be set by a user in a self-defined way, and as an example of the invention, the time from the water inlet device 5 to the mixing cavity 7 to the time when the adding switch 14 is turned on ranges from 3s to 30 s. Preferably 5s to 15 s.

S5, continuously putting washing water into the mixing cavity 7 through the water inlet device 5;

at this time, the continuously fed washing water can flush the mixing cavity 7 and the diversion cavity 12 to drive the residual washing agent to enter the inner barrel 9 on one hand, and can continuously feed water into the inner barrel 9 on the other hand until the water quantity required by washing is met.

At this time, the throw-in switch 14 may be in an on state; or in a closed state until the water level in the inner barrel 9 meets the water quantity required by washing, and then the putting switch 14 is turned on; or when the water inlet device injects water needed for washing into the detergent box, the throwing switch 14 is switched on and off for multiple times, preferably, at least part of the water quantity of the mixing cavity 7 flows into the inner barrel through the first water outlet 6 in each switching-on and switching-off period.

Preferably, the washing water to be supplied at this time is a rated amount of washing water.

S6, after the water injection of the water inlet device 5 is finished, closing the throwing switch 14 after a preset time t;

preferably, the preset time t ranges from 10s to 30 s.

Through carrying out diversified design with water installations, satisfy the demand that water installations 5 intake to detergent box 4, detergent and water dissolve the dilution back at the mixed cavity, put in switch 14 and be in the off-state, the mixed liquid of detergent and water intensive mixing dissolves the back in the mixed cavity, follow first delivery port 6 on the mixed cavity 7 flows to interior bucket, on the one hand water installations 5 is intake to mixed cavity 7, dilutes and dissolves the detergent in the mixed cavity 7, on the other hand the mixed liquid of detergent and water flows to interior bucket from first delivery port 6, further makes the detergent dissolve more abundant, is favorable to improving the cleanliness factor of the clothing washed. After the detergent is fully dissolved and diluted, the putting switch 14 is turned on, the mixed liquid in the mixing cavity 7 can continuously flow to the inner barrel from the first water outlet 6, or can flow to the flow guide cavity through the siphon device, and then flows to the inner barrel through the putting switch, and when the mixed liquid level in the mixing cavity 7 is lower than the height of the first water outlet 6, the mixed liquid in the mixing cavity 7 can only flow to the inner barrel from the flow guide cavity; after the mixed liquid in the mixing cavity 7 flows to the flow guide cavity through the siphon device, the washing water is continuously put into the mixing cavity 7 through the water inlet device 5, and the water is injected for the time, so that the washing water is satisfied, the mixing cavity 7 and the flow guide cavity 12 in the detergent box 4 are washed, the sanitation and the tidiness of the inside of the washing machine are ensured, and the good appearance of the washing machine is convenient to maintain.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A drum washing machine comprises a door body (1), an outer barrel (8) and an inner barrel (9), wherein a transparent observation window (2) is arranged on the door body (1), and is characterized in that an accommodating groove (3) and a detergent box (4) arranged inside the accommodating groove (3) are arranged on the observation window (2), the detergent box (4) comprises a mixing cavity (7) and a flow guide cavity (12) arranged below the mixing cavity (7), the flow guide cavity (12) is communicated with the mixing cavity (7) through a siphon device, a water inlet device (5) is arranged above the mixing cavity (7), the water inlet device (5) is used for injecting water into the mixing cavity (7), the detergent box (4) comprises a rear end wall (15), and the rear end wall (15) does not exceed the rear end of the observation window (2).

2. A drum washing machine according to claim 1, characterized in that the diversion chamber (12) can communicate with the inner tub (9) through a throw-in switch (14), the throw-in switch (14) being provided at an opening where the diversion chamber (12) communicates with the inner tub (9).

3. A drum washing machine according to claim 1, characterized in that the water inlet device (5) comprises any one or more of a water inlet structure of the front outer tub, a water inlet structure of the drying tunnel, and a water inlet structure on the door body and the door seal assembly.

4. The drum washing machine according to claim 3, characterized in that the outer tub (8) comprises an outer tub limiting plate (21), the outer tub limiting plate (21) is arranged at the front side of the outer tub (8), the outer tub limiting plate (21) is connected with the door seal assembly connecting plate (19) in a limiting manner, a drying channel (23) is arranged at the outer side of the outer tub (8), the rear end of the drying channel (23) is communicated with the inner tub (9), the front end of the drying channel (23) is communicated with the condensing channel (24), the inlet end (25) of the condensing channel (24) is communicated with the inner tub (9), and the inlet end (25) is arranged at the connection position of the outer tub limiting plate (21) and the door seal assembly connecting plate (19).

5. A drum washing machine according to claim 4, characterized in that the water inlet device (5) is arranged at one side of the condensation channel (24) close to the body of the inner tub (9).

6. A drum washing machine according to claim 4, characterized in that the water inlet device (5) communicates with a condensation channel (24), the inlet end (25) of the condensation channel (24) being formed above the detergent box (4).

7. A drum washing machine according to claim 3, characterized in that the water inlet device (5) comprises a first water flowing pipe (501) and a second water flowing pipe (502), the first water flowing pipe (501) is arranged on the door body (1), and the second water flowing pipe (502) is arranged on the door seal assembly.

8. A drum washing machine according to claim 7, characterized in that the first water flowing pipe (501) is communicated with the second water flowing pipe (502) through an expansion pipe (503), the expansion pipe (503) is arranged at the hinged joint of the door body (1) and the door seal assembly, and the water outlet of the first water flowing pipe (501) is arranged above the observation window (2).

9. The drum washing machine according to claim 1, characterized in that the lower wall of the mixing cavity (7) is a second flow guide plate (20), the second flow guide plate (20) is provided with a siphon (11) at the side far away from the rear end wall (15), a siphon cover (16) is arranged at the upper end of the siphon (11), the siphon cover (16) and the siphon (11) are formed with a water flowing gap (10) at the joint, the upper end port of the siphon (11) is communicated with the water flowing gap (10), and the lower end port of the siphon (10) is communicated with the flow guide cavity (12).

10. A drum washing machine according to claim 9, characterized in that a first water outlet (6) is formed at the upper end of the rear end wall (15), and the liquid in the mixing chamber (7) can flow to the inner tub (9) through the first water outlet (6).

11. Drum washing machine according to claim 9, characterized in that the siphon (11) is vertically arranged inside the mixing chamber (7), the upper end of the mixing chamber (7) is open, the upper end opening of the siphon (11) is lower in height than the opening of the upper end of the mixing chamber (7).

12. A drum washing machine according to claim 9, characterized in that the second baffle (20) slopes downwards from the end near the rear end wall (15) to the end near the siphon (11).

13. A drum washing machine according to claim 9, characterized in that a first deflector (13) is arranged at the bottom of the deflector chamber (12), the first deflector (13) being arranged in a downward inclined configuration from front to back.

14. A drum washing machine according to claim 3, characterized in that a baffle structure is arranged on the door seal assembly (3) close to the outer tub (8), the baffle structure is connected with the door seal assembly (3) and extends from top to bottom to separate the upper space of the mixing cavity (7).

15. A method for dispensing detergent, which is used in the drum washing machine according to any one of claims 1 to 13, comprising:

s1, adding a detergent into the mixing cavity;

s2, judging whether the door body (1) is completely closed, if so, executing a step S3;

s3, closing a throwing switch (14), throwing washing water into the mixing cavity (7) through a water inlet device (5), and enabling the washing water to flow into the inner barrel (9) through a first water outlet (6) on the detergent box (4) after being mixed with detergent;

s4, stopping water injection by the water inlet device (5), turning on the throwing switch (14), and allowing the detergent mixed liquid in the mixing cavity (7) to flow into the flow guide cavity (12) through the siphon device and then flow into the inner barrel (9);

s5, continuously putting washing water into the mixing cavity (7) through the water inlet device (5);

s6, after the water injection of the water inlet device (5) is finished, the throwing switch (14) is turned off after the preset time t.

16. The method for dispensing detergent as claimed in claim 15, wherein the preset time t is 10s to 30 s.