Roller washing machine

Abstract

The invention discloses a drum washing machine which comprises an outer drum with a drum opening in the front. The front flange is arranged on a barrel opening of the outer barrel, a groove extending in the circumferential direction is formed in the inner side wall of the front flange, one end of the groove is formed near the lowest end of the circumferential direction of the front flange, and the other end of the groove extends upwards in the circumferential direction; the included angle between the tangent line of the tail end of the other end of the groove and the central horizontal line of the front flange is larger than 45 degrees. The groove extending in the circumferential direction is formed in the inner side wall of the front flange, the included angle between the tangent line of the tail end of the other end of the groove and the central horizontal line of the front flange is larger than 45 degrees, and when the inner barrel rotates for dewatering, washing water at the bottom can be guided to be driven by the inner barrel to wash water at the bottom. The washing water flows upwards for a certain distance in the groove to reach the upward tail end of the groove, and then flows downwards to the bottom along the groove under the action of gravity, so that the washing water is prevented from continuously moving upwards and splashing, leaving water or foam on observation window glass, or flowing to spin-dried clothes after the rotating speed of the inner drum is reduced.

Description

Technical Field

[0001] The invention belongs to the field of washing machines, and in particular relates to a drum washing machine. Background Art

[0002] As people's living standards continue to improve, washing machines have gradually become one of the essential household appliances in people's homes. Ordinary drum washing machines include an outer drum and an inner drum, the outer drum is arranged in a casing, the drum mouth of the outer drum is arranged in advance, and the inner drum is rotatably supported in the outer drum, and the inner drum is driven by a motor to rotate to achieve washing or dehydration.

[0003] When the washing machine is dehydrating, the inner drum rotates, driving the washing water to flow in the direction of the inner drum rotation. Due to the gap between the inner drum and the outer drum, the washing water is driven to the front flange at the front of the outer drum under the action of the airflow, and flows along the circumference of the front flange. The washing water may be stirred up by the high-speed rotation of the inner drum and splash onto the observation tube glass of the machine door, blocking the user's view of the inner drum, which is not beautiful in appearance. In addition, there is a problem that the water will flow onto the clothes again when the speed is reduced or the rotation stops.

[0004] In particular, in the prior art, a profile is stamped on the circumference of the front flange to improve the strength of the front flange. However, when the washing water between the inner and outer drums is driven to the front flange, the washing water brought up by the high-speed rotation of the inner drum passes through the profile and is blocked by the profile, causing the water to be stirred up and flow onto the observation window glass, resulting in water or foam on the glass. When the rotation speed of the inner drum is reduced, the water will remain on the clothes in the washing machine again, resulting in incomplete dehydration and contamination of the rinsed clothes.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and the purpose is to provide a drum washing machine, wherein a groove extending in a circumferential direction is provided on the inner side wall of the front flange of the washing machine, which can guide the washing water at the bottom to flow along the groove driven by the inner drum, and the angle between the tangent at the other end of the groove and the central horizontal line of the front flange exceeds 45°, so that when the inner drum rotates for dehydration, the washing water can be guided to flow upward for a certain distance, and when reaching the upward end of the groove, it can flow downward along the groove to the bottom of the front flange under the action of gravity, thereby preventing the washing water from continuing to move upward and colliding with other structures to splash onto the observation window glass or flowing onto the clothes being spun dry.

[0007] In order to solve the above technical problems, the basic idea of ​​the technical solution adopted by the present invention is to provide a drum washing machine, comprising

[0008] An outer cylinder having a cylinder mouth at the front;

[0009] The front flange is arranged on the tube mouth of the outer tube, and the inner side wall of the front flange is provided with a groove extending along the circumferential direction, one end of the groove is arranged near the lowest end of the front flange in the circumferential direction, and the other end is extended upward along the circumferential direction; the angle between the tangent line at the other end of the groove and the central horizontal line of the front flange exceeds 45°.

[0010] The washing machine of the present invention is provided with a groove extending in the circumferential direction on the inner side wall of the front flange of the outer drum, which can guide the washing water at the bottom to flow along the groove driven by the inner drum, and the angle between the tangent line at the other end of the groove and the horizontal line where the center of the front flange is located exceeds 45 degrees, which can guide the washing water to flow upward for a certain distance during the dehydration process of the inner drum rotating, and when reaching the upward end of the groove, then flow downward along the groove to the bottom of the front flange under the action of gravity, so as to avoid the washing water colliding with the inner side wall of the front flange, or the washing water continuing to move upward and colliding with other structures and splashing, leaving water or foam on the observation window glass, and also prevent the washing water from flowing onto the spun clothes when the speed of the inner drum is reduced or the inner drum stops rotating.

[0011] Furthermore, the other end of the groove is extended along the rotation direction of the inner drum during dehydration;

[0012] Preferably, the other end of the groove extends in a counterclockwise direction.

[0013] Furthermore, the other end of the groove extends upward to a position lower than the highest end of the circumference of the front flange.

[0014] Furthermore, an angle between a tangent line at the other end of the groove and a central horizontal line of the front flange is greater than or equal to 60°.

[0015] Furthermore, the other end of the groove extends upward to be set below the center horizontal line of the front flange and is set close to the center horizontal line of the front flange.

[0016] The present invention extends the other end of the groove upward to a position lower than the center horizontal line of the front flange, which can ensure to the greatest extent that when the washing water flows to the other end of the groove, it can flow back under the action of gravity to avoid impact and flow to the outside of the groove, and can also flow out of a larger space. A reinforcement structure can be set to improve the structural strength of the front flange.

[0017] Furthermore, two ends of the groove in the extension direction are respectively located on two sides of a vertical line where the center of the front flange is located.

[0018] Furthermore, one end of the groove is slightly higher than the lowest end of the front flange in the circumferential direction.

[0019] Furthermore, the angles between the two ends of the groove in the extension direction and the center line of the front flange are greater than or equal to 90°.

[0020] Furthermore, a clothing loading port is provided in the middle of the front flange, and the groove is extended to the outer periphery of the clothing loading port, and the groove is formed by punching the inner side wall of the front flange toward the outer side wall.

[0021] Furthermore, a plurality of reinforcing structures are provided on the front flange, which are spaced apart along the circumference of the front flange and spaced apart from the circumference of the groove.

[0022] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0023] (1) The washing machine of the present invention is provided with a groove extending in the circumferential direction on the inner side wall of the front flange of the outer drum, which can guide the washing water at the bottom to flow along the groove under the drive of the inner drum, and the angle between the tangent line at the other end of the groove and the horizontal line where the center of the front flange is located exceeds 45 degrees, so that the washing water can be guided to flow upward for a certain distance during the dehydration process of the inner drum rotating, and when it reaches the upward end of the groove, it will flow downward along the groove to the bottom of the front flange under the action of gravity, so as to avoid the washing water from colliding with the inner side wall of the front flange, or the washing water from continuing to move upward and colliding with other structures and splashing, leaving water or foam on the observation window glass, and also avoiding the washing water from flowing onto the spun clothes when the speed of the inner drum is reduced or the inner drum stops rotating.

[0024] (2) When the angle α between the tangent line at the other end of the groove and the central horizontal line of the front flange is greater than or equal to 60°, the other end of the groove can extend upward to a higher height. The inertia will be smaller as it goes up. Under the action of gravity, it can better guide the washing water to flow downward to the lower part of the drum, thereby preventing the washing water from splashing to the outside of the other end of the groove.

[0025] (3) In the present invention, the other end of the groove is extended upward and is not higher than the highest end of the circumference of the front flange. On the one hand, the washing water moves upward under the drive of the inner drum, moves to the other end of the groove due to inertia, and then flows downward along the groove to the lowest end of the circumference of the front flange under the action of gravity, which is convenient for collecting the washing water, and can be subsequently drained away through the drainage structure at the bottom of the outer drum; on the other hand, the extension length of the groove is avoided to be too long, so that the reinforcement structure cannot be arranged at intervals on the circumference of the front flange, resulting in the problem of insufficient structural strength of the front flange.

[0026] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of a partial structure of a drum washing machine of the present invention;

[0029] Figure 2 The present invention Figure 1 A schematic diagram of the structure of the middle part from another angle;

[0030] Figure 3 is a schematic diagram of the outer side of a front flange of the present invention;

[0031] Figure 4 is a schematic diagram of the inner side of a front flange of the present invention;

[0032] Figure 5 The present invention Figure 3 Schematic diagram of the cross section in the AA direction;

[0033] Figure 6 The present invention Figure 4 Schematic diagram from another angle.

[0034] In the figure: 1, outer cylinder; 11, cylinder mouth; 2, front flange; 21, groove; 22, first convex bump; 23, reinforcement structure; 231, first pressure profile; 232, second pressure profile; 233, third pressure profile; 234, fourth pressure profile; 24, clothing loading port.

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0037] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figures 1 to 6 As shown, the present invention provides a drum washing machine, which includes a housing, an outer drum 1, an inner drum, a driving motor, and the like.

[0040] Figure 1 The front side schematic diagram of the washing machine part structure. The outer drum 1 is fixed in the housing through a supporting structure and is used to hold washing water. The inner drum is rotatably arranged in the outer drum 1 and is used to rotate to wash, rinse or spin-dry clothes. The inner drum is rotatably supported at the rear of the outer drum 1, and the motor is in driving connection with the inner drum to drive the inner drum to rotate.

[0041] The washing machine also includes a machine door. The front side of the box body is provided with a clothes-feeding opening. The box body is provided with a machine door for closing or opening the clothes-feeding opening.

[0042] The outer tube 1 includes a front flange 2. The front portion of the outer tube 1 has a tube opening 11, and the front flange 2 is arranged on the tube opening 11 of the outer tube 1. The inner side wall of the front flange 2 is provided with a groove 21 extending in the circumferential direction, one end of the groove 21 is arranged near the lowest end of the front flange 2 in the circumferential direction, and the other end is extended upward in the circumferential direction. The angle α between the tangent line at the other end of the groove 21 and the center horizontal line of the front flange 2 exceeds 45°. The angle α may also be greater than or equal to 45°.

[0043] The washing machine of the present invention is provided with a groove 21 extending in the circumferential direction on the inner side wall of the front flange 2 of the outer drum 1, which can guide the washing water at the bottom to flow along the groove 21 driven by the inner drum, and the angle α between the tangent line at the other end of the groove 21 and the horizontal line where the center of the front flange 2 is located exceeds 45°, which can guide the washing water to flow upward for a certain distance during the dehydration process of the inner drum rotating, and when reaching the upward end of the groove 21, it then flows downward along the groove 21 to the bottom of the front flange 2 under the action of gravity, thereby avoiding the washing water from colliding with the inner side wall of the front flange 2, or the washing water from continuing to move upward and colliding with other structures and splashing, leaving water or foam on the observation window glass, and also avoiding the washing water from flowing onto the spun clothes when the speed of the inner drum is reduced or the inner drum stops rotating.

[0044] A clothing delivery opening 24 is provided in the middle of the front flange 2 , and is arranged opposite to the clothing delivery opening in front and back. The groove 21 is extended and arranged on the periphery of the clothing delivery opening 24 .

[0045] The other end of the groove 21 is extended upward from the bottom of the front flange 2 along the rotation direction of the inner drum during dehydration.

[0046] The extending direction of the other end of the groove 21 is the same as the rotation direction of the inner drum when dehydrating. When the washing machine is dehydrating, the inner drum rotates rapidly, driving the water at the bottom of the inner drum to flow upward along the groove 21, which is more convenient to guide the water flow, avoid the water from colliding with the inner wall of the front flange 2, and prevent the water from splashing onto the observation window glass of the machine door.

[0047] Driven by the rotation of the inner drum, the washing water always tends to fly out along the tangential direction due to its inertia, and flows along the groove 21 under the obstruction and guidance of the inner wall of the groove 21.

[0048] When the angle α between the tangent line at the other end of the groove 21 and the horizontal line where the center of the front flange 2 is located exceeds 45°, the washing water will have a smaller inertia due to the effect of gravity as it goes up. Under the effect of the downward gravity, the washing water will easily flow downward in the groove 21 and flow back to a lower place, which can also better prevent the washing water from splashing outside the groove 21.

[0049] When a reinforcing structure 23 for improving the structural strength is provided on the front flange 2, the reinforcing structure 23 is circumferentially spaced from the other end of the groove 21. When the angle α between the tangent line at the other end of the groove 21 and the central horizontal line of the front flange 2 is greater than or equal to 45°, it is possible to prevent the washing water from impacting the outside of the groove 21 and colliding with the reinforcing structure 23 in the circumferential direction, and further prevent splashing onto the observation window glass.

[0050] Preferably, the inner drum dehydration rotation direction is counterclockwise, and the other end of the groove 21 is also extended in the counterclockwise direction, which is the same direction as the inner drum dehydration rotation direction, so as to facilitate guiding the water flow in the groove 21.

[0051] Furthermore, the other end of the groove 21 extends upward to a position lower than the highest end of the circumference of the front flange 2 .

[0052] In the present invention, the other end of the groove 21 is extended upward and is set not to exceed the highest end of the circumference of the front flange 2. On the one hand, the washing water moves upward under the drive of the inner drum, and moves to the other end of the groove 21 due to inertia, and then flows downward along the groove 21 to the lowest end of the circumference of the front flange 2 under the action of gravity, which is convenient for collecting the washing water, and can be subsequently drained away through the drainage structure at the bottom of the outer drum 1; on the other hand, to avoid the groove 21 from extending too long, it is impossible to set the reinforcing structure 23 at intervals on the circumference of the front flange 2, resulting in the problem of insufficient structural strength of the front flange 2.

[0053] Preferably, an angle α between a tangent line at the other end of the groove 21 and a central horizontal line of the front flange 2 is greater than or equal to 60°.

[0054] When the angle α between the tangent line at the other end of the groove 21 and the central horizontal line of the front flange 2 is greater than or equal to 60°, the other end of the groove 21 can extend upward to a higher height, and the inertia will be smaller as it goes up. Under the action of gravity, it can better guide the washing water to flow downward to the lower part of the drum, thereby preventing the washing water from splashing to the outside of the other end of the groove 21.

[0055] like Figures 3 to 6 As shown, the other end of the groove 21 extends upward to be set below the center horizontal line of the front flange 2 and is set close to the center horizontal line of the front flange 2.

[0056] The present invention extends the other end of the groove 21 upward to a position lower than the center horizontal line of the front flange 2, which can ensure to the greatest extent that when the washing water flows to the other end of the groove 21, it can flow back under the action of gravity to avoid impact and flow to the outside of the groove 21, and can also flow out of a larger space. A reinforcing structure 23 can be set to improve the structural strength of the front flange 2.

[0057] Furthermore, the front flange 2 includes a plurality of reinforcement structures 23 , which are arranged at intervals along the circumference of the front flange 2 and are arranged at intervals along the circumference of the groove 21 .

[0058] A plurality of reinforcement structures 23 extend circumferentially and are circumferentially spaced apart on the front flange 2 between one end and the other end of the groove 21 .

[0059] The plurality of reinforcement structures 23 are formed by punching outwardly from the inner side wall of the front flange 2. The number of the plurality of reinforcement structures 23 is 2-5.

[0060] Preferably, the plurality of reinforcement structures 23 include a first profile 231, which is circumferentially spaced from the other end of the groove 21 and located above the other end of the groove 21. The first profile 231 extends upwardly along the circumferential direction for a certain distance and does not exceed the highest end of the front flange 2 in the circumferential direction.

[0061] The plurality of reinforcement structures 23 further include a second pressure profile 232, which is circumferentially spaced from the first pressure profile 231 and is located above the first pressure profile 231. The second pressure profile 232 extends upwardly for a certain distance along the circumferential direction to the vicinity of the highest end of the front flange 2 in the circumferential direction. Preferably, the second pressure profile 232 extends upwardly not more than the highest end of the front flange 2 in the circumferential direction and is close to the highest end of the front flange 2 in the circumferential direction.

[0062] The plurality of reinforcement structures 23 further include a third pressure profile 233 and a fourth pressure profile 234. The third pressure profile 233 and the fourth pressure profile 234 are arranged in sequence in the circumferential direction, and the third pressure profile 233 and the second pressure profile 232 are arranged in the circumferential direction in intervals. The third pressure profile 233 extends downward from the vicinity of the highest end of the circumference of the front flange 2 and does not exceed the central horizontal line of the front flange 2 downward. The fourth pressure profile 234 is located between the lower part of the central horizontal line of the front flange 2 and one end of the groove 21.

[0063] The front flange 2 includes an annular plate and a cylindrical plate, one axial end of the cylindrical plate is connected to the inner ring opening of the annular plate, and the other end extends forward with a gradually decreasing inner diameter to form a clothing loading port 24. The groove 21 and the reinforcement structure 23 are arranged on the annular plate.

[0064] Furthermore, two ends of the groove 21 in the extension direction are respectively located on two sides of a vertical line where the center of the front flange 2 is located.

[0065] That is, one end of the groove 21 in the extension direction is located on one side of the vertical line where the center of the front flange 2 is located, and the other end extends counterclockwise or clockwise to the other side of the vertical line where the center of the front flange 2 is located. The two ends of the groove 21 in the extension direction are located on both sides of the vertical line where the center of the front flange 2 is located, which can better guide the washing water at the bottom to flow upward in the groove 21 and then flow back to the bottom, with a wider guiding range and better effect.

[0066] Furthermore, one end of the groove 21 is slightly higher than the lowest end of the front flange 2 in the circumferential direction.

[0067] Furthermore, the angles α between the two ends of the groove 21 in the extending direction and the center line of the front flange 2 are greater than or equal to 90°.

[0068] Preferably, the angle α between the two ends of the groove 21 in the extending direction and the center line of the front flange 2 is 90°.

[0069] A preferred solution is that one end of the groove 21 is slightly higher than the lowest end of the front flange 2 in the circumferential direction, and is located on one side of the vertical line where the center of the front flange 2 is located, and the other end extends counterclockwise upward to a horizontal line close to the center of the front flange 2, and is located on the other side of the vertical line where the center of the front flange 2 is located; and the angle α between the two ends of the groove 21 in the extension direction and the line connecting the center of the front flange 2 is equal to 90°.

[0070] The front flange 2 is provided with a first pressure profile 231, a second pressure profile 232, a third pressure profile 233 and a fourth pressure profile 234. The third pressure profile 233, the fourth pressure profile 234 and one end of the groove 21 in the extending direction are all located on the same side of the vertical line where the center of the front flange 2 is located. The first pressure profile 231, the second pressure profile 232 and the other end of the groove 21 in the extending direction are all located on the other side of the vertical line where the center of the front flange 2 is located.

[0071] More preferably, the first pressure profile 231, the second pressure profile 232 and the third pressure profile 233 have the same extension length. A large amount of space is reserved between the third pressure profile 233 and the fourth pressure profile 234 to avoid the installation structure related to the machine door. The extension length of the fourth pressure profile 234 is greater than that of the third pressure profile 233, which can ensure the strength of the front flange 2 on this side.

[0072] The groove 21 is formed by punching the inner wall of the front flange 2 toward the outer wall, and a first convex hump 22 is formed on the outer wall of the front flange 2. The first pressed profile 231, the second pressed profile 232, the third pressed profile 233 and the fourth pressed profile 234 are also formed by punching the inner wall of the front flange 2 toward the outside, and a concave cavity is formed on the inner side of the front flange 2, and a second convex hump is formed on the inner side of the front flange 2.

[0073] Therefore, if the other end of the groove 21 extends upward to a certain height, the washing water will not flow out of the other end of the groove 21, and will not collide with the concave cavity formed by the reinforcing structure 23 on the inner wall of the front flange 2 to produce splashes, thereby preventing the washing water from splashing onto the observation window during the dehydration process, or falling onto the clothes being spun after the inner drum stops rotating.

[0074] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A drum washing machine, characterized in that: include An outer cylinder having a cylinder mouth at the front; The front flange is arranged on the tube mouth of the outer tube, and the inner side wall of the front flange is provided with a groove extending along the circumferential direction, one end of the groove is arranged near the lowest end of the front flange in the circumferential direction, and the other end is extended upward along the circumferential direction; the angle between the tangent line at the other end of the groove and the central horizontal line of the front flange exceeds 45°.

2. A drum washing machine according to claim 1, characterized in that: The other end of the groove is extended along the rotation direction of the inner drum during dehydration; Preferably, the other end of the groove extends in a counterclockwise direction.

3. A drum washing machine according to claim 1, characterized in that: The other end of the groove extends upward to a position lower than the highest end in the circumferential direction of the front flange.

4. A drum washing machine according to any one of claims 1 to 3, characterized in that: The angle between the tangent line at the other end of the groove and the central horizontal line of the front flange is greater than or equal to 60°.

5. A drum washing machine according to claim 4, characterized in that: The other end of the groove extends upward to be arranged below the central horizontal line of the front flange and is arranged close to the central horizontal line of the front flange.

6. A drum washing machine according to any one of claims 1 to 5, characterized in that: Two ends of the groove in the extending direction are respectively located on two sides of a vertical line where the center of the front flange is located.

7. A drum washing machine according to claim 6, characterized in that: One end of the groove is slightly higher than the lowest end of the front flange in the circumferential direction.

8. A drum washing machine according to claim 7, characterized in that: The angles between the two ends of the groove in the extending direction and the center line of the front flange are greater than or equal to 90°.

9. A drum washing machine according to any one of claims 1 to 8, characterized in that: A clothing inlet is provided in the middle of the front flange, and the groove is extended and arranged at the periphery of the clothing inlet. The groove is formed by punching the inner side wall of the front flange toward the outer side wall.

10. A drum washing machine according to any one of claims 1 to 9, characterized in that: A plurality of reinforcing structures are arranged on the front flange at intervals along the circumference of the front flange and at intervals along the circumference of the groove.

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