Drum washing machine

Abstract

The present application provides a kind of drum washing machine, including drum assembly, drum assembly includes outer cylinder and inner cylinder in it, door seal is provided on the cylinder mouth of outer cylinder, drum washing machine further includes: spray assembly, set on the top area of door seal, including spray head, spray head has first water outlet, with the orientation of drum washing machine in use state as reference, first water outlet extends along up-down direction, so that the water curtain that first water outlet sprays spreads in vertical plane, first water outlet has first spray part that sprays towards the washing space side of inner cylinder, the up-down extension length of first spray part is greater than the left-right width of first spray part, and the deflection angle of spray head can be adjusted.The present application ensures that the water curtain that spray head sprays spreads in vertical plane under actual water inlet water pressure can comprehensively cover the front-back full axial range of the lower area cylinder wall of inner cylinder, to further ensure the washing effect of drum washing machine.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of washing machine design, and particularly relates to a drum washing machine. BACKGROUND

[0002] Now there are some washing machines on the market with clothes spraying washing function, such as the patent with the application number CN201210104935, which discloses a drum washing machine washing control method and drum washing machine, wherein a fan-shaped spraying structure nozzle towards the drum interior is adopted to realize the water curtain sprayed by the nozzle to cover from the front part of the drum to the rear part of the drum through the specific structure design of the nozzle. However, the flat fan-shaped feature of the nozzle in the patent combined with the height difference design of the left and right sides of the nozzle makes the fan-shaped water curtain formed by the nozzle too twisted, which can realize the full coverage from the front part of the drum to the rear part of the drum, but cannot realize the full coverage of the area where the clothes fall down on the lower cylinder wall of the drum (inner cylinder), and the part of the clothes with small lifting height close to the front part of the drum is even not sprayed by the water, which leads to the washing effect of this part of clothes greatly reduced. In order to overcome the above-mentioned defects, the applicant proposes a spraying head structure capable of spraying a water curtain extending in a vertical plane in the related technology, which can ensure the full coverage of the inner cylinder from front to back within a certain water inlet pressure range in the drum washing machine. However, the applicant finds that since the installation position and angle of the spraying head are fixed after the spraying head is shipped, the water inlet pressure in different application environments may have a large difference, and when the water pressure changes greatly, especially when the water inlet pressure is lower than the lower limit value of the preset water pressure range, if the installation angle of the spraying head cannot be changed, the coverage range of the spraying water in the axial direction of the inner cylinder will change greatly, and in some cases the water curtain extending in the vertical plane sprayed by the spraying head cannot completely cover the full axial range of the front and rear of the inner cylinder. SUMMARY

[0003] Therefore, the present application provides a drum washing machine, which can solve the technical problem that the angle of the spraying head in the drum washing machine with the spraying structure of the water curtain extending in the vertical plane is fixed and cannot be adjusted, and the water curtain of the spraying head cannot completely cover the full axial range of the front and rear of the cylinder wall of the area below the inner cylinder when the water inlet pressure is lower than the preset water inlet pressure range.

[0004] In order to solve the above-mentioned problems, the present application provides a drum washing machine, which comprises a drum assembly, the drum assembly comprising an outer cylinder and an inner cylinder in the outer cylinder, a door seal being arranged on the cylinder port of the outer cylinder, and the drum washing machine further comprising:

[0005] A spray assembly is arranged on a top area of the door seal and includes a spray head having a first water spraying opening, which extends along a vertical direction with reference to an orientation of the drum washing machine in a use state, so that a water curtain sprayed by the first water spraying opening extends in a vertical plane, the first water spraying opening has a first spraying part spraying toward a washing space side of the inner drum, an up-down extension length of the first spraying part is greater than a left-right width of the first spraying part, and a deflection angle of the spray head can be adjusted.

[0006] In some embodiments,

[0007] The spray assembly further includes a water inlet connecting pipe, a water outlet end of the water inlet connecting pipe is formed with a spherical hinge, a water inlet of the spray head is formed with a spherical recess, the spherical hinge is embedded in the spherical recess and the two are in interference fit.

[0008] In some embodiments,

[0009] The spray head includes a spray pipe and a nozzle threadedly connected to a water outlet end of the spray pipe, the spherical recess is at a water inlet end of the spray pipe, and the first spraying part is on the nozzle.

[0010] In some embodiments,

[0011] The spray pipe and the nozzle further have a positioning structure, which includes a positioning rib on one of the spray pipe and the nozzle and a positioning groove on the other, the positioning rib can be embedded in the positioning groove during rotational connection of the nozzle and the spray pipe.

[0012] In some embodiments,

[0013] With reference to the orientation of the drum washing machine in the use state, the left-right width of the first spraying part decreases from bottom to top.

[0014] In some embodiments,

[0015] The drum washing machine further includes a sealed door window, the sealed door window is arranged in cooperation with the door seal, the first water spraying opening further has a second spraying part spraying toward a top surface of the sealed door window, an up-down extension length of the second spraying part is greater than a left-right width of the second spraying part, the up-down extension length of the second spraying part is less than the up-down extension length of the first spraying part, and a maximum left-right width of the second spraying part is less than a maximum left-right width of the first spraying part.

[0016] In some embodiments,

[0017] The lower end of the first spray part is communicated with the upper end of the second spray part, and the maximum left-right width of the first spray part is 1 / 3 of the up-down extension length of the first water spray opening; and / or, the maximum left-right width of the first spray part is 2 to 3 times of the maximum left-right width of the second spray part.

[0018] In some embodiments,

[0019] The up-down extension length of the first water spray opening is 5mm-6mm, the maximum left-right width of the first water spray opening is 2.5mm-3.5mm, and the water inlet pressure of the spray head is 0.1MPa-0.24MPa; and / or,

[0020] The left-right width of the second spray part decreases from top to bottom.

[0021] In some embodiments,

[0022] The first water spray opening is configured on the axial end surface of the spray head, and a water curtain diffusion groove is also configured on the axial end surface, and the water curtain diffusion groove is arranged around the first water spray opening.

[0023] In some embodiments,

[0024] The slot section of the water curtain diffusion groove is V-shaped, the water curtain diffusion groove has a first diffusion section corresponding to the first spray part and a second diffusion section corresponding to the second spray part, the diffusion angle of the first diffusion section is a, the diffusion angle of the second diffusion section is b, the inner diameter of the washing space of the inner cylinder is d, a is equal to d, and / or, the product of b and d is equal to the arc length of the cylinder wall between the adjacent two lifting ribs on the inner cylinder.

[0025] In some embodiments,

[0026] The nozzle is a hollow sleeve structure, one end of the hollow sleeve structure is the axial end surface, and a second water spray opening communicated with the hollow cavity of the hollow sleeve structure is formed on the circumferential side wall of the hollow sleeve structure, the second water spray opening has two, and the two second water spray openings are respectively on the left and right sides of the second spray part.

[0027] In some embodiments,

[0028] The first water outlet is formed by a first elliptical hole and a second elliptical hole, wherein the long axis of the first elliptical hole is larger than the long axis of the second elliptical hole, the short axis of the first elliptical hole is larger than the short axis of the second elliptical hole, and the long axis of the first elliptical hole and the long axis of the second elliptical hole have an overlapping section, a part of the first elliptical hole forms the first spray part, a part of the second elliptical hole forms the second spray part, and the first elliptical hole and the second elliptical hole are connected smoothly at the intersection position.

[0029] The drum washing machine has the following beneficial effects:

[0030] Since the deflection angle of the spray head can be adjusted, after the washing machine is sold and installed at the user's site, the after-sales personnel can adjust the deflection angle of the spray head according to the actual water inlet pressure under the user's working condition, so as to ensure that the water curtain extending in the vertical plane sprayed by the spray head under the actual water inlet pressure can fully cover the front and rear axial range of the cylinder wall of the lower region of the inner cylinder, thereby ensuring the washing effect of the drum washing machine. It should be noted that the spray head used in the present application has a first water outlet extending in the up-down direction, which can form a water curtain extending in the vertical plane, thereby forming a full coverage from the front to the rear of the bottom wall region of the inner cylinder (i.e. the lower region of the inner cylinder), that is, ensuring full spraying of the clothes in the lower region of the inner cylinder, thereby effectively ensuring the washing effect of the clothes, and effectively overcoming the deficiency of the prior art that the substantially horizontal fan-shaped water curtain cannot effectively cover the clothes in the lower region of the inner cylinder, resulting in poor washing effect. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0032] The structures, proportions, sizes, etc. shown in the present specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the limiting conditions under which the present application can be implemented, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0033] Figure 1 The present application provides a drum washing machine, which has the following beneficial effects:

[0034] Figure 2 is a front view of the spray head in another embodiment of the present application (along the axial direction of the spray head, from the outside to the inside, that is, in the reverse direction of the spray direction);

[0035] Figure 3 is an exploded structural schematic view of the spray assembly in an embodiment of the present application;

[0036] Figure 4 is a three-dimensional structural schematic view of the spray assembly in an embodiment of the present application (front view, that is, the direction of the spray of the spray water facing the first water outlet);

[0037] Figure 5 is a three-dimensional structural schematic view of the spray assembly in an embodiment of the present application (back view, that is, the direction of the spray of the spray water along the first water outlet), wherein the up and down arrows indicate the length adjustment direction of the nozzle;

[0038] Figure 6 is a side structural schematic view of the spray assembly in an embodiment of the present application, wherein the rotating arrow indicates the angle adjustment of the spray head;

[0039] Figure 7 is a sectional view of the spray assembly in an embodiment of the present application in the assembled state;

[0040] Figure 8 is a schematic view of the coverage area of the vertically extended water curtain formed by the first spray part in the spray assembly in a drum washing machine in an embodiment of the present application.

[0041] The reference signs are as follows:

[0042] 10, spray head; 101, spherical groove; 102, spray pipe; 103, positioning rib; 104, positioning groove; 1, nozzle; 11, first water outlet; 111, first spray part; 112, second spray part; 113, water curtain diffusion groove; 12, second water outlet; 2, water inlet connecting pipe; 21, spherical hinge; 100, inner drum; 200, outer drum; 201, door seal; 300, sealed door and window. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative labor fall within the protection scope of the present application.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0045] It should be noted that the terms "and / or" used herein are merely used to associate associated objects, and represent three possible relationships, for example, A and / or B, which can represent three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0046] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the technology, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0047] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0048] For purposes of the description hereinafter, spatial relations terms, such as "above", "below", "top", "bottom", "side", "higher", "lower", "upper", "under", and the like, can be used with respect to the illustrated embodiment. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device described is turned over, and a spatial term used with respect to a feature in one orientation is then used with respect to that feature when in the other orientation, this is to be understood as a spatial relationship described previously between the then top and bottom surfaces. Accordingly, the example term "above" can encompass both a feature that is above in an orientation depicted in the figures and a feature that is below in the orientation depicted in the figures, depending on the particular orientation of the device. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0049] In addition, it should be noted that the use of "first", "second", and the like, terminology to describe various components in the examples is merely used to differentiate one component from another and does not constitute a limitation of the application. Unless otherwise stated, the use of such terminology is not intended to limit the scope of the application.

[0050] With reference to the drawings Figures 1 to 8 As shown, according to the embodiment of the present application, a drum washing machine is provided, which comprises a drum assembly (not labeled in the figure) including an outer drum 200 and an inner drum 100 in the outer drum 200, and a door seal 201 provided on the drum mouth of the outer drum 200, and further comprises a spraying assembly (not labeled in the figure) provided on the top area of the door seal 201, which includes a spraying head 10, the spraying head 10 having a first water spraying port 11, the first water spraying port 11 extending along the up-down direction, as shown in the figure, so that the water curtain sprayed by the first water spraying port 11 extends in the vertical plane, the first water spraying port 11 having a first spraying part 111 spraying toward the washing space side of the inner drum 100, the up-down extension length of the first spraying part 111 being greater than the left-right width of the first spraying part 111, and the deflection angle of the spraying head 10 being adjustable. Figure 1 As shown, according to the embodiment of the present application, a drum washing machine is provided, which comprises a drum assembly (not labeled in the figure) including an outer drum 200 and an inner drum 100 in the outer drum 200, and a door seal 201 provided on the drum mouth of the outer drum 200, and further comprises a spraying assembly (not labeled in the figure) provided on the top area of the door seal 201, which includes a spraying head 10, the spraying head 10 having a first water spraying port 11, the first water spraying port 11 extending along the up-down direction, as shown in the figure, so that the water curtain sprayed by the first water spraying port 11 extends in the vertical plane, the first water spraying port 11 having a first spraying part 111 spraying toward the washing space side of the inner drum 100, the up-down extension length of the first spraying part 111 being greater than the left-right width of the first spraying part 111, and the deflection angle of the spraying head 10 being adjustable. Figure 8 As shown, according to the embodiment of the present application, a drum washing machine is provided, which comprises a drum assembly (not labeled in the figure) including an outer drum 200 and an inner drum 100 in the outer drum 200, and a door seal 201 provided on the drum mouth of the outer drum 200, and further comprises a spraying assembly (not labeled in the figure) provided on the top area of the door seal 201, which includes a spraying head 10, the spraying head 10 having a first water spraying port 11, the first water spraying port 11 extending along the up-down direction, as shown in the figure, so that the water curtain sprayed by the first water spraying port 11 extends in the vertical plane, the first water spraying port 11 having a first spraying part 111 spraying toward the washing space side of the inner drum 100, the up-down extension length of the first spraying part 111 being greater than the left-right width of the first spraying part 111, and the deflection angle of the spraying head 10 being adjustable.

[0051] The technical scheme has the following beneficial effects: in the technical scheme, the deflection angle of the spray head 10 can be adjusted, and after the washing machine is sold, the after-sales personnel can adjust the deflection angle of the spray head 10 according to the actual water inlet pressure under the working condition of the user, so that the water curtain sprayed by the spray head 10 in the vertical plane can fully cover the front and rear axial range of the cylinder wall of the lower region of the inner cylinder 100 under the actual water inlet pressure, thereby ensuring the washing effect of the drum washing machine. It should be noted that the spray head 10 used in the present application has a first water outlet 11 extending in the up-down direction, which can form a water curtain extending in the vertical plane, thereby fully covering the bottom wall region of the inner cylinder 100 (i.e. the lower region of the inner cylinder), i.e. ensuring that the clothes in the lower region of the inner cylinder 100 are fully sprayed, thereby effectively ensuring the washing effect of the clothes, and effectively overcoming the deficiency that the substantially horizontal fan-shaped water curtain in the prior art cannot effectively cover the clothes in the lower region of the inner cylinder 100, resulting in poor washing effect.

[0052] For reference Figures 3 to 7 In one specific embodiment, the spray assembly further includes a water inlet connecting pipe 2, and the water outlet end of the water inlet connecting pipe 2 is formed with a ball hinge 21, and the water inlet of the spray head 10 is formed with a spherical groove 101, and the ball hinge 21 is embedded in the spherical groove 101 and is in interference fit therebetween. Through the embedding and interference fit between the ball hinge 21 and the spherical groove 101, the after-sales personnel can twist the spray head 10 to the corresponding angle according to the actual angle requirement, which is simple in structure, reliable in connection, does not require electrical control, and reduces the manufacturing cost.

[0053] In one preferred embodiment, referring to Figure 7 The spray head 10 includes a spray pipe 102 and a nozzle 1 threadedly connected to the water outlet end of the spray pipe 102, the spherical groove 101 is at the water inlet end of the spray pipe 102, and the first spray part 111 is on the nozzle 1. By threadedly connecting the nozzle 1 and the spray pipe 102, on the one hand, the detachable connection of the two components is realized, and on the other hand, the adjustment of the extension length of the nozzle 1 can be realized by the rotation length of the two, and the adjustment of the extension length of the nozzle 1 can also adjust the coverage range of the water curtain sprayed thereby.

[0054] In order to ensure the stability of the connection between the spray pipe 102 and the nozzle 1, the spray pipe 102 and the nozzle 1 have a positioning structure therebetween, the positioning structure includes a positioning rib 103 on one of the spray pipe 102 and the nozzle 1, and a positioning groove 104 on the other, the positioning rib 103 can be embedded in the positioning groove 104 during the rotary connection of the nozzle 1 and the spray pipe 102, thereby realizing the locking of the rotation length of the two. For reference Figure 5As shown, the slot of the positioning groove 103 extends along the axial direction of the nozzle 102, and the positioning rib 103 is a protruding long strip body towards the nozzle 102, wherein the protruding height of the slot wall of the positioning groove 103 and the positioning rib 103 are slightly over-dimensioned in size, and the positioning rib 103 is deformed to enter or exit the positioning groove 103 during the rotation of the nozzle 1.

[0055] In a preferred embodiment, with reference to the orientation of the drum washing machine in use, the left and right width of the first spraying part 111 decreases from bottom to top, so that the water amount of the spraying water of the first spraying part 111 decreases from the front part (i.e. the end close to the sealing door window 300) to the rear part of the inner drum 100. The decrease of the left and right width of the first spraying part 111 from bottom to top ensures the reasonable distribution of the spraying water amount from the front part to the rear part of the inner drum 100, which can ensure a larger spraying amount of the clothes close to the sealing door window 300, and further improve the washing effect.

[0056] Specifically referring to Figure 8 As shown, the spraying water sprayed by the first spraying part 111 can spray a long distance (such as the upper limit of the spraying water in the figure) to the rear part of the inner drum 100 at the upper end (i.e. the top end) thereof, and the spraying water sprayed at the lower end (i.e. the bottom end) thereof is sprayed to the front part of the inner drum 100, which realizes the full coverage of the front and rear axial directions of the inner drum 100, and especially ensures the sufficient spraying of the clothes in the lower region of the front part of the inner drum 100, thereby ensuring the clothes washing effect. Further referring to Figure 8 As shown, the rear part of the inner drum 100 protrudes towards the barrel opening side of the inner drum 100 due to the need of connection with the driving motor, and the protrusion will cause the clothes to be mainly concentrated in the front part of the inner drum 100 when the clothes in the washing space are less, and especially concentrated in the lower region of the front part of the inner drum 100 when the clothes are heavy. The vertical water curtain of the present application is especially matched with this kind of working condition in combination with the water amount distribution, and the clothes washing effect is better.

[0057] As described above, the drum washing machine further comprises a sealing door window 300, which is arranged in cooperation with the door seal 201, and both of them realize the sealing of the barrel opening of the outer drum 200. The first water spraying port 11 further has a second spraying part 112 which sprays towards the top surface of the sealing door window 300. The up and down extension length of the second spraying part 112 is greater than its left and right width, and the up and down extension length of the second spraying part 112 is less than the up and down extension length of the first spraying part 111. The maximum left and right width of the second spraying part 112 is less than the maximum left and right width of the first spraying part 111.

[0058] In the technical solution, the first water outlet 11 is also formed with a second spray part 112 arranged for the sealing door and window 300, which can form a flushing on the top surface of the sealing door and window 300 to prevent the retention of washing liquid foam on the top surface of the sealing door and window 300, and ensure the cleaning degree of washing. Meanwhile, by limiting the left and right widths of the two spray parts, the spray water amount of the first water outlet 11 is reasonably distributed between the inner drum 100 and the sealing door and window 300, preventing the adverse effect of the spray water amount of the second spray part 112 on the first spray part 111, and ensuring the sufficient spray on the clothes.

[0059] In a preferred embodiment, the lower end of the first spray part 111 is communicated with the upper end of the second spray part 112, that is, the first spray part 111 and the second spray part 112 are objectively different parts of one through hole, and the sizes and shapes of the two parts are different. The maximum left and right width of the first spray part 111 is 1 / 3 of the up and down extension length of the first water outlet 11. It is verified by test that when the above-mentioned limitation is met, the water amount for spraying clothes is required. If it is higher than 1 / 3, the water amount for spraying clothes will be low. If it is lower than 1 / 3, the area of the spray door and window will be too small. And / or, the maximum left and right width of the first spray part 111 is 2 to 3 times of the maximum left and right width of the second spray part 112, to prevent the too large spray amount of the second spray part 112 from affecting the spray amount of the first spray part 111.

[0060] In a specific embodiment, the up and down extension length of the first water outlet 11 is 5mm-6mm, the maximum left and right width of the first water outlet 11 is 2.5mm-3.5mm (preferably 3mm), and the water inlet pressure of the spray head 10 is 0.1MPa-0.24MPa. In the technical solution, under the above-mentioned water inlet pressure and the size of the first water outlet 11, it is verified by test that the water curtain formed is relatively stable, and the atomization of the spray water after being sprayed out can be effectively avoided, to ensure the washing effect. Specifically, when the spray head with the above-mentioned size is used at the minimum water inlet pressure, i.e. 0.1MPa, the water flow sprayed out of the first water outlet 11 can form a water curtain with a width covering the whole washing inner drum body. When the maximum water inlet pressure, i.e. 0.24MPa, the water flow sprayed out of the first water outlet 11 can form a stable water curtain without atomization, and the water curtain width (front and back) can still cover the whole washing inner drum body.

[0061] In a preferred embodiment, the left and right widths of the second spray part 112 decrease from top to bottom, so that the water curtain sprayed out of the second spray part 112 can decrease from top to bottom, to ensure that the area close to the clothes on the sealing door and window 300 is more fully flushed, preventing the accumulation of washing liquid foam on the sealing door and window 300.

[0062] In some embodiments, the first water outlet 11 is configured on an axial end surface of the shower head 10, and a water curtain diffusion groove 113 is also configured on the axial end surface, which is arranged around the first water outlet 11. The water curtain diffusion groove 113 can make the formed water curtain have a certain width through the effect of the water curtain diffusion groove 113, so as to form a larger area of coverage on the clothes in the diameter direction of the inner cylinder 100, and further improve the washing effect. It can be understood that the aforementioned water curtain diffusion groove 113 has a diffusion angle that becomes larger along the water curtain spraying direction. In a specific embodiment, the slot cross section (cross section, see Figure 6 ) of the water curtain diffusion groove 113 is V-shaped, the water curtain diffusion groove 113 has a first diffusion section corresponding to the first spraying part 111 and a second diffusion section corresponding to the second spraying part 112, the diffusion angle of the first diffusion section is a, the diffusion angle of the second diffusion section is b, the inner diameter of the washing space of the inner cylinder 100 is d, a is equal to d, and / or the product of b and d is equal to the arc length of the cylinder wall between the adjacent two lifting ribs on the inner cylinder 100, so that the water curtain width can be matched with the clothes falling area of the lower wall of the inner cylinder 100.

[0063] In a preferred embodiment, as shown in Figure 5 , the nozzle 1 is a hollow sleeve structure, one end of the hollow sleeve structure is the axial end surface, and the second water outlet 12 is formed on the circumferential side wall of the hollow sleeve structure and communicates with the hollow cavity of the hollow sleeve structure, the second water outlet 12 has two, and the two second water outlets 12 are respectively on the left and right sides of the second spraying part 112, so that a larger range of the top surface of the sealing door and window 300 can be covered through the cooperation of the second spraying part 112 and the two second water outlets 12, and the flushing effect of the washing liquid foam thereon is further improved. It can be understood that since the second spraying part 112 is close to the sealing door and window 300 below, and in order not to reduce the water amount of the first spraying part 111, the water amount of the second spraying part 112 is small, and the range of the flip cover sealing door and window 300 is also relatively small, and at this time, the second water outlet 12 on the left and right sides can more comprehensively cover the top surface of the sealing door and window 300, and ensure sufficient cleaning thereof.

[0064] Preferably, the two second water outlets 12 are on the side of the circumferential side wall of the hollow sleeve structure facing the sealing door and window 300, and are preferably symmetrically on the two sides of the second spraying part 112. As known, the top surface of the aforementioned sealing door and window 300 is a gradually low inclined surface inclined to one side of the inner cylinder 100, and the water sprayed thereon will be further guided at least partially into the inner cylinder 100 after flushing it, and the part of the water can be used twice (especially in the rinsing and dewatering process).

[0065] In order to ensure that the water curtain formed by the spray head 10 can be maximally located in the lower area of the inner cylinder 100, in a preferred embodiment, the top area is specifically a central angle range of 10° on both sides of the vertical line passing through the rotation center of the inner cylinder 100 in the axial projection of the inner cylinder 100 (the central angle corresponds to the rotation center of the inner cylinder 100). Preferably, the central symmetry plane of the spray head 10, i.e., the symmetry plane of the left and right widths of the first water outlet 11, is coplanar with the vertical symmetry plane of the inner cylinder 100. The deflection angle of the spray head 10 in the vertical symmetry plane can be determined according to the upper and lower limits of the water curtain formed by the spray head 10 under the predetermined water inlet pressure, which at least covers the axial length of the front (cylinder opening) to the rear (cylinder bottom) of the inner cylinder 100. The determination process can be obtained by specific test means.

[0066] Specifically referring to Figure 2 As shown, the first water outlet 11 is formed by a combination of a first elliptical hole and a second elliptical hole, wherein the major axis of the first elliptical hole is larger than the major axis of the second elliptical hole, the minor axis of the first elliptical hole is larger than the minor axis of the second elliptical hole, and the major axis of the first elliptical hole and the major axis of the second elliptical hole have an overlapping segment. Part of the first elliptical hole forms the first spray part 111, part of the second elliptical hole forms the second spray part 112, and the intersection of the first elliptical hole and the second elliptical hole is smoothly connected.

[0067] In this technical solution, the shape of the first water outlet 11 is designed as an elongated circle with a relatively smooth outline, which can ensure the quality of the water curtain and reduce the amount of water mist in the water curtain.

[0068] The technical solution of the present application can not need to specially add parts for cleaning the sealing door and window on the structure of the washing machine due to the fact that the live water spray washing can simultaneously wash the clothes and the sealing door and window, and can also simplify the design of the washing program, thereby reducing the production cost. The live water spray washing can achieve the corresponding washing effect under the condition that the water consumption is less than that of ordinary rinsing, thereby reducing the use cost of the user. In addition, unlike the traditional washing mode of injecting water for rinsing and then dehydrating, the spray head in the present application can spray the clothes during the dehydration process, so that the clean spray water penetrates the clothes under the action of the centrifugal force to carry away the stains or detergent residues (this process replaces the rinsing process, and the system experiment conclusion: the effect is better than that of ordinary rinsing). Because the spray water consumption is less than that of rinsing, and the spray water process is the washing process, the traditional rinsing process is omitted, so there is the effect of high efficiency, energy saving and time saving.

[0069] When the spray head 10 is working, that is, when the washing process starts, the incoming water flow is sprayed out through the first water spray port 11. Due to the opening shape of the first water spray port 11, most of the water flow will be sprayed on the clothes. At the same time, the washing drum (that is, the aforementioned inner drum 100) drives the clothes to rotate, thereby completing the live water spray washing; and a small amount of water will be sprayed on the sealed doors and windows 300. Since the overall structure of the sealed doors and windows extends into the drum, its upper part is an oblique section. The water flow sprayed by the spray head 10 hits the oblique section of the sealed doors and windows, and the water flow spreads along the oblique section. In conjunction with the two second water spray ports 12 mentioned above, it can cover the entire doors and windows, and then rinse off the foam and other residues on them. Since the clothes in the drum are randomly distributed in the drum when the washing machine is washing, the spray water curtain must completely cover the entire drum body to achieve a better washing effect.

[0070] The technical solution of the present invention is that since live water spray washing can wash clothes and sealed doors and windows at the same time, there is no need to specially add parts for cleaning sealed doors and windows to the structure of the washing machine, and the design of the washing program can be simplified, thereby reducing the production cost of the product. Live water spray washing can also achieve the corresponding washing effect when the amount of water used is less than that of ordinary rinsing, thereby reducing the user's usage cost. In addition, unlike the traditional washing method of injecting water for rinsing and then dehydrating, the spray head in the present invention can spray clothes during the dehydration process, thereby utilizing the centrifugal force of the clothes to allow clean spray water to penetrate the clothes and take away stains or detergent residues (this process replaces the rinsing process, and the experimental conclusion of the system colleagues is that the effect is better than ordinary rinsing). Because the water consumption of spraying is less than that of rinsing, and the spraying water intake process is the washing process, the traditional rinsing process is omitted, so it has the effect of high efficiency, energy saving and time saving.

[0071] When the spray head 10 is working, that is, when the washing process starts, the incoming water flow is sprayed out through the first water spray port 11. Due to the opening shape of the first water spray port 11, most of the water flow will be sprayed on the clothes. At the same time, the washing drum (that is, the aforementioned inner drum 100) drives the clothes to rotate, thereby completing the live water spray washing; and a small amount of water will be sprayed on the sealed doors and windows 300. Since the overall structure of the sealed doors and windows extends into the drum, its upper part is an oblique section. The water flow sprayed by the spray head 10 hits the oblique section of the sealed doors and windows, and the water flow spreads along the oblique section. In conjunction with the two second water spray ports 12 mentioned above, it can cover the entire doors and windows, and then rinse off the foam and other residues on them. Since the clothes in the drum are randomly distributed in the drum when the washing machine is washing, the spray water curtain must completely cover the entire drum body to achieve a better washing effect.

[0072] In addition, it has been verified through experiments that when the diameter-to-depth ratio (i.e., the ratio of the diameter to the depth) of the inner cylinder 100 is about 1.5, the water inlet pressure is 0.2 MPa, and the shape of the first ejection portion 111 is an ellipse with an aspect ratio (i.e., the ratio of the length of the major axis to the minor axis) of 2 (seeFigure 2 When the spray head 10 is arranged at the position shown in the figure, the water curtain sprayed by the spray head 10 can cover the front and rear axial length range of the lower wall body of the inner cylinder 100, and the water curtain is not obviously atomized.

[0073] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A drum washing machine comprising a drum assembly including an outer drum (200) and an inner drum (100) in the inner drum (100), a door seal (201) being provided on a drum mouth of the outer drum (200), characterized in that, The drum washing machine further comprises: The spray assembly is arranged on the top area of the door seal (201) and comprises a spray head (10) provided with a first water spraying opening (11), which extends along the up-down direction and spreads the water curtain in the vertical plane, and the first water spraying opening (11) has a first spraying part (111) spraying towards the washing space side of the inner drum (100), the up-down extension length of the first spraying part (111) is greater than the left-right width of the first spraying part (111), and the deflection angle of the spray head (10) can be adjusted; the left-right width of the first spraying part (111) decreases from bottom to top; the drum washing machine further comprises a sealing door window (300) arranged in cooperation with the door seal (201), the first water spraying opening (11) further has a second spraying part (112) spraying towards the top surface of the sealing door window (300), the up-down extension length of the second spraying part (112) is greater than the left-right width of the second spraying part (112), and the up-down extension length of the second spraying part (112) is less than the up-down extension length of the first spraying part (111), and the maximum left-right width of the second spraying part (112) is less than the maximum left-right width of the first spraying part (111).

2. The drum washing machine according to claim 1, characterized in that, The spray assembly further comprises a water inlet connecting pipe (2), the water outlet end of the water inlet connecting pipe (2) is formed with a spherical hinge (21), the water inlet of the spray head (10) is formed with a spherical groove (101), and the spherical hinge (21) is embedded in the spherical groove (101) and is in interference fit therebetween.

3. The drum washing machine according to claim 2, characterized in that, The spray head (10) comprises a spray pipe (102) and a nozzle (1) threadedly connected to the water outlet end of the spray pipe (102), the spherical groove (101) is at the water inlet end of the spray pipe (102), and the first spraying part (111) is on the nozzle (1).

4. The drum washing machine according to claim 3, characterized in that, The spray pipe (102) and the nozzle (1) further have a positioning structure, the positioning structure comprises a positioning rib (103) on one of the spray pipe (102) and the nozzle (1) and a positioning groove (104) on the other, and the positioning rib (103) can be embedded in the positioning groove (104) during the rotational connection of the nozzle (1) and the spray pipe (102).

5. The drum washing machine according to claim 1, characterized in that, The lower end of the first spray part (111) is communicated with the upper end of the second spray part (112), and the maximum left-right width of the first spray part (111) is 1 / 3 of the up-down extension length of the first water outlet (11); and / or, the maximum left-right width of the first spray part (111) is 2-3 times of the maximum left-right width of the second spray part (112).

6. The drum washing machine according to claim 1, characterized in that, The up-down extension length of the first water outlet (11) is 5-6 mm, the maximum left-right width of the first water outlet (11) is 2.5-3.5 mm, and the water inlet pressure of the spray head (10) is 0.1-0.24 MPa; and / or, The left-right width of the second spray part (112) decreases from top to bottom.

7. The drum washing machine according to claim 3, characterized in that, The first water outlet (11) is configured on the axial end surface of the spray head (10), and a water curtain diffusion groove (113) is further configured on the axial end surface, and the water curtain diffusion groove (113) is arranged around the first water outlet (11).

8. The drum washing machine according to claim 7, characterized in that, The groove section of the water curtain diffusion groove (113) is V-shaped, the water curtain diffusion groove (113) has a first diffusion section corresponding to the first spray part (111) and a second diffusion section corresponding to the second spray part (112), the diffusion angle of the first diffusion section is a, the diffusion angle of the second diffusion section is b, the inner diameter of the washing space of the inner drum (100) is d, a is equal to d, and / or, the product of b and d is equal to the arc length of the drum wall between adjacent two lifting ribs on the inner drum (100).

9. The drum washing machine according to claim 7, characterized in that, The nozzle (1) is a hollow sleeve structure, one end of the hollow sleeve structure is the axial end surface, and a second water outlet (12) communicated with the hollow cavity of the hollow sleeve structure is formed on the circumferential side wall of the hollow sleeve structure, the second water outlet (12) has two, and the two second water outlets (12) are respectively located on the left and right sides of the second spray part (112).

10. The drum washing machine according to claim 1, characterized in that, The first water outlet (11) is formed by a combination of a first elliptical hole and a second elliptical hole, wherein the major axis of the first elliptical hole is larger than the major axis of the second elliptical hole, the minor axis of the first elliptical hole is larger than the minor axis of the second elliptical hole, and the major axis of the first elliptical hole and the major axis of the second elliptical hole have an overlapping section, part of the first elliptical hole forms the first spray part (111), part of the second elliptical hole forms the second spray part (112), and the position where the first elliptical hole and the second elliptical hole intersect is smoothly connected.

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