CN108950993B

CN108950993B - Drum washing machine

Info

Publication number: CN108950993B
Application number: CN201710901069.5A
Authority: CN
Inventors: 林光芳; 徐彭城; 朱春雨; 卢松; 苗雨来; 钱伟
Original assignee: Wuxi Little Swan Electric Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2017-09-28
Filing date: 2017-09-28
Publication date: 2023-08-22
Anticipated expiration: 2037-09-28
Also published as: CN108950993A

Abstract

The application discloses a drum washing machine, comprising: an outer tub; an inner cylinder rotatably provided in the outer tub; a water supply device; the stirrer is arranged in the inner cylinder and connected with the water supply device, and the stirrer is driven to rotate by water supplied by the water supply device. According to the drum washing machine provided by the embodiment of the application, the stirrer is arranged in the inner drum, the water supply device is used for supplying water to the stirrer, the stirrer can be driven to rotate by the water supplied by the water supply device, the belt pulley, the motor and other elements which independently drive the stirrer to rotate in the related art are omitted, the structure is simplified, the control is more convenient, and the cost is reduced.

Description

Drum washing machine

Technical Field

The application relates to the technical field of washing machines, in particular to a drum washing machine.

Background

In the related art, a drum washing machine generally includes an outer tub, an inner tub, a driving system, and a control system. During washing, the inner cylinder rotates to drive clothes and water in the inner cylinder to rotate to wash the clothes, wherein the clothes are lifted and put down by virtue of the baffle plate in the inner cylinder and are beaten through the inner circumferential surface of the inner cylinder. The drum washing machine in the related art has some problems, such as water flow generated by the rotation of the inner drum, single washing mode, and influence on washing effect; the water flow strength is weak, and the washing time is long; the water consumption is high; and the water in the inner cylinder has poor soaking uniformity and soaking effect on clothes, and the soaking time is long. Accordingly, there is a need for improvement in the existing drum washing machine.

Disclosure of Invention

The present application has been made based on the findings and knowledge of the inventors regarding the following facts and problems:

in order to improve the washing effect of clothes, document-CN 1453416a proposes a double-power drum washing machine, in which an independently rotatable agitator is provided at one end of an inner drum of the drum washing machine to improve the washing effect, and the agitator is driven by a pulley, a motor, etc. independent from a driving device of the inner drum, thereby complicating the structure and control of the driving device of the agitator, and further complicating the structure and control of the drum washing machine, and having high cost.

In addition, in order to improve the wetting effect on laundry, for example, document-CN 105986432a proposes a drum type washing machine having a nozzle provided in an inner tub for spraying water into the inner tub to wet the laundry. However, the drum washing machine only relies on the inner drum to wash clothes, and still has the problems of single washing mode, weak water flow intensity, long washing time, large water consumption and poor washing effect. Furthermore, since the nozzles are only used to wet the laundry, the nozzles typically spray water only during the initial phase of washing, and the nozzles cease to operate after the laundry is completely wetted, without spraying water to the laundry.

The present application aims to solve at least one of the technical problems in the related art to some extent.

For this reason, embodiments of the present application provide a drum washing machine that can improve laundry washing effect and wetting effect, and has simple structure and control, and reduced cost.

According to an embodiment of the present application, a drum washing machine includes: an outer tub; an inner cylinder rotatably provided in the outer tub; a water supply device; the stirrer is arranged in the inner cylinder and connected with the water supply device, and the stirrer is driven to rotate by water supplied by the water supply device.

According to the drum washing machine provided by the embodiment of the application, the stirrer is arranged in the inner drum, the water supply device is used for supplying water to the stirrer, the stirrer can be driven to rotate by the water supplied by the water supply device, the belt pulley, the motor and other elements which independently drive the stirrer to rotate in the related art can be omitted, the structure and the control of the drum washing machine are simplified, and the cost is reduced. Moreover, the water supplied by the water supply device can further play a role in soaking clothes, so that the clothes soaking effect is improved, and the washing effect is further improved.

According to one embodiment of the present application, the pulsator has a first water spraying hole for spraying water supplied from the water supply device into the inner tub, wherein the pulsator is driven to rotate by spraying water into the inner tub through the first water spraying hole. The water supplied by the water supply device is sprayed into the inner cylinder through the first water spraying hole, so that the soaking effect on clothes can be further improved.

Optionally, a nozzle is arranged on the first water spraying hole.

According to one embodiment of the present application, the water supply device includes a water supply pipe and a water supply pump, a first end of the water supply pipe being in communication with the outer tub to supply water within the outer tub to the pulsator through a second end of the water supply pipe.

Optionally, the first end of the water supply pipe is communicated with the bottom of the inner cavity of the outer barrel.

Further, a filter is arranged on the water supply device.

According to one embodiment of the application, the inner barrel is rotatably mounted on the outer barrel by an inner barrel bracket.

Alternatively, the inner cylinder bracket has a central shaft portion and a frame portion, the inner cylinder being mounted on the frame portion, the central shaft portion being rotatably supported on a rear wall of the outer tub.

Optionally, a mounting hole is formed in the rear wall of the outer barrel, a bearing seat is arranged in the mounting hole, and the central shaft part is rotatably supported by a bracket bearing arranged in the bearing seat.

Alternatively, the agitator is rotatably mounted at a front end of the central shaft portion, and the water supply device supplies water to the agitator through an axial through hole in the central shaft portion.

The drum washing machine according to a further embodiment of the present application further includes a water supply shaft having a water supply passage therein, the pulsator rotatably mounted at a front end of the central shaft portion, the central shaft portion having an axial through hole, the water supply shaft being provided in the axial through hole and supported by a water supply shaft bearing provided in the axial through hole, a first end of the water supply shaft being connected to the water supply device to supply water to the pulsator through a second end of the water supply shaft.

According to one embodiment of the application, the stirrer is arranged at the rear part of the inner cavity of the inner cylinder, and the rotation axis of the stirrer, the rotation axis of the outer cylinder and the rotation axis of the inner cylinder are coaxial.

According to one embodiment of the application, the agitator is disc-shaped.

Optionally, the stirrer is internally provided with a water cavity communicated with the water supply device and a first water spraying hole for spraying water in the water cavity into the inner barrel.

Optionally, the stirrer is a pulsator.

Optionally, the impeller is internally provided with a water cavity communicated with the water supply device and a first water spraying hole for spraying water in the water cavity into the inner cylinder, wherein the impeller is driven to rotate by spraying water into the inner cylinder through the first water spraying hole.

Optionally, ribs which are arranged at intervals along the circumferential direction of the impeller and extend along the radial direction of the impeller are arranged on the front surface of the impeller, and the first water spray holes are formed on the ribs.

Optionally, the convex ribs include a first convex rib and a second convex rib smaller than the first convex rib, the first convex rib and the second convex rib are alternately arranged along the circumferential direction of the impeller, and the first water spraying hole is formed in the first convex rib.

Optionally, the first rib is an arc-shaped strip-shaped rib, and a plurality of first water spraying holes are formed in one side surface of the first rib at intervals along the length direction of the first rib.

Optionally, the central part of the impeller is provided with a second water spraying hole for spraying the water in the water cavity into the inner barrel.

Optionally, the front end surface of the rib is provided with a third water spraying hole for spraying the water in the water cavity into the inner barrel.

Optionally, a circumferential groove is formed in the front surface of the rear cover of the inner barrel, a skirt extending backwards is arranged on the outer periphery of the impeller, and the skirt is located in the circumferential groove.

According to one embodiment of the present application, the inner cylinder is rotatably mounted on the outer cylinder through an inner cylinder bracket, the inner cylinder bracket has a central shaft portion and a frame portion, the inner cylinder is mounted on the frame portion, a mounting hole is formed in a rear wall of the outer cylinder, a bearing seat is formed in the mounting hole, the central shaft portion is rotatably supported by a bracket bearing provided in the bearing seat, the agitator is a pulsator, the pulsator is provided with a water cavity and a first water spraying hole therein, the water cavity is provided with a water inlet, the first water spraying hole is used for spraying water supplied into the water cavity by the water supply device into the inner cylinder through the water inlet, the pulsator is rotatably mounted at a front end of the central shaft portion through a pulsator bearing, the pulsator is rotatably driven to rotate by spraying water into the inner cylinder through the first water spraying hole, and the central shaft portion is provided with an axial through hole, and a water supply shaft is supported in the axial through the water supply shaft bearing; the water supply device comprises a water supply pipe and a water supply pump arranged on the water supply pipe, wherein the first end of the water supply pipe is communicated with the outer barrel, the second end of the water supply pipe is connected with the rear end of the water supply shaft in a sealing way, and a water supply channel which is used for communicating the water supply pipe with the water inlet of the water cavity is arranged in the water supply shaft.

Optionally, the rear wall of the outer tub has a central flange portion, and the bearing housing is provided in the central flange portion.

Optionally, the front end surface of the central shaft portion exceeds the front end surface of the water supply shaft in a forward direction and protrudes into the water chamber through the water inlet.

Optionally, a water inlet sealing ring is arranged between the front end of the water supply shaft and the inner wall of the axial through hole.

Optionally, the impeller is installed at the front end of the central shaft portion through an impeller connecting seat and the impeller bearing arranged between the impeller connecting seat and the central shaft portion, a water cavity sealing gasket is arranged between the impeller connecting seat and the central shaft portion, and the water cavity sealing gasket is hermetically sleeved at the front end of the central shaft portion.

Optionally, an outer barrel sealing ring is arranged between the bearing seat and the central shaft part.

According to a further embodiment of the application, the front surface of the rear cover of the inner barrel is provided with a circumferential groove, and the outer periphery of the pulsator is provided with a skirt extending backwards, and the skirt is positioned in the circumferential groove.

Optionally, a filter is arranged on the water supply pipe.

Further, the convex ribs comprise first convex ribs and second convex ribs smaller than the first convex ribs, the first convex ribs and the second convex ribs are alternately arranged along the circumferential direction of the impeller, and a plurality of first water spraying holes are formed in one side face of each first convex rib at intervals along the length direction of the first convex rib.

Drawings

Fig. 1 is a partial structural sectional view of a drum washing machine according to an embodiment of the present application.

FIG. 2 is a schematic view showing a structure in which a pulsator of a drum washing machine is assembled with a rear cover of an inner tub in accordance with an embodiment of the present application;

fig. 3 is a schematic structural view of a pulsator for a drum washing machine in accordance with another embodiment of the present application.

Reference numerals:

the drum type washing machine 100,

the outer tub 1, the center flange 11, the mounting hole 111,

the inner tube 2, the inner tube holder 21, the central shaft portion 211, the axial through hole 2111, the frame portion 212, the rear cover 22, the circumferential groove 221,

the water supply device 3, the water supply pipe 31, the water supply pump 32, the water supply shaft 33, the water supply channel 331,

the stirrer (4) is provided with a stirring device,

the first water spraying hole 41, the water cavity 42, the water inlet 421, the convex rib 43, the first convex rib 431, the second convex rib 432, the skirt 44, the impeller central portion 45, the second water spraying hole 46, the impeller connecting seat 47, the third water spraying hole 48,

bearing block 51, bracket bearing 52, water supply shaft bearing 53, pulsator bearing 54,

a water inlet sealing ring 61, an outer barrel sealing ring 62, a water cavity sealing gasket 63,

filter 7, pulley 81, fastening nut 82.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.

Hereinafter, a drum washing machine according to an embodiment of the present application will be described with reference to fig. 1 to 3.

As shown in fig. 1 to 3, a drum washing machine 100 according to an embodiment of the present application includes: the water supply device comprises an outer barrel 1, an inner barrel 2, a water supply device 3 and a stirrer 4.

The inner cylinder 2 is rotatably arranged in the outer cylinder 1, the stirrer 4 is arranged in the inner cylinder 2 and is connected with the water supply device 3, and the stirrer 4 is driven to rotate by water supplied by the water supply device 3. When the drum washing machine works, the water supply device 3 supplies water to the stirrer 4, and the stirrer 4 rotates under the drive of water flow, so that the stirring effect on clothes is realized.

According to the drum washing machine 100 of the embodiment of the application, by arranging the stirrer 4 in the inner drum 2 and adopting the water supply device 3 to supply water to the stirrer 4, the stirrer 4 can be driven to rotate by the water supplied by the water supply device 3, the components such as a belt pulley, a belt and a motor which independently drive the stirrer to rotate in the related art are omitted, the structure and the control of the driving device of the stirrer 4 are simplified, the structure and the control of the drum washing machine are further reduced, and the cost is reduced. In addition, the water supplied by the water supply device 3 can play a role of soaking the clothes, so that the soaking effect of the clothes is improved, and the washing effect is further improved.

According to an embodiment of the present application, the pulsator 4 has the first water spraying holes 41, and when the water supply device 3 supplies water to the pulsator 4, the first water spraying holes 41 can spray the water supplied from the water supply device 3 into the inner tub 2, thereby further improving the effect of wetting the laundry in the inner tub 2, and of course, the pulsator 4 rotates under the driving of the water flow sprayed from the first water spraying holes 41 into the inner tub 2, thereby stirring the laundry in the inner tub 2 and improving the washing effect. In the washing process of clothes, the inner barrel 2 is rotated to generate water flow, and the stirring of the stirrer 4 can also generate water flow, so that the washing modes are various, the washing effect of the clothes is improved, and the washing time is reduced.

It is understood that, in order to drive the rotation of the pulsator 4 by spraying water from the first water spray hole 41, the opening direction of the first water spray hole 41 makes a predetermined angle with the rotation axis of the pulsator 4.

In some examples, the stirrer 4 may be driven to rotate by the water supplied from the water supply device 3 corresponding to the inner cylinder 2, and in particular, the rotation speed of the stirrer 4 may be adjusted by the intensity of the water flow sprayed from the first water spray hole 41, so that the stirrer 4 rotates relative to the inner cylinder 2, and the control is convenient.

In some examples, the first water spraying holes 41 are provided with nozzles (not shown), through which the intensity and direction of the sprayed water flow and the spraying effect of the water can be adjusted, thereby adjusting the driving force of the water flow driving the pulsator 4 to rotate and improving the laundry washing effect.

As shown in fig. 1, according to an embodiment of the present application, the water supply device 3 includes a water supply pipe 31 and a water supply pump 32, the water supply pipe 31 having a first end (a lower end as shown in fig. 1) and a second end (an upper end as shown in fig. 1), the first end of the water supply pipe 31 being in communication with the inner cavity of the outer tub 1, the second end of the water supply pipe 31 being connected to the pulsator 4, the water supply pump 32 being provided on the water supply pipe 31. Here, "connection" in "the second end of the water supply pipe 31 is connected to the pulsator 4" should be understood in a broad sense, for example, the water supply pipe 31 may or may not be physically connected to the pulsator 4, as long as water coming out of the second end of the water supply pipe 31 can be supplied to the pulsator 4 to drive the pulsator 4 to rotate.

Thereby, water in the inner cavity of the outer tub 1 is supplied to the pulsator 4 through the water supply pipe 31, thereby driving the pulsator 4 to rotate by the water current. Through communicating the water supply device 3 with the inner cavity of the outer barrel 1, the washing water in the outer barrel 1 can be used for driving the stirrer 4 to rotate and soak clothes, no additional water source is needed, and the water consumption is reduced. It will be appreciated that in some models where the circulation pump is not provided, the first end of the water supply pipe 31 may also be directly connected to a water supply source, such as an external faucet, rather than using the circulating water in the washing machine.

In some examples, the first end of the water supply pipe 31 communicates with the bottom of the inner cavity of the outer tub 1 such that the water supply pump 32 may pump water from the bottom of the inner cavity of the outer tub 1 to the pulsator 4, and the water supply device 3 may ensure water supply to the pulsator 4 even in a washing mode of the drum washing machine 100 at a lowest water level, thereby ensuring a wetting effect and a washing effect of the drum washing machine 100 in different washing modes.

In some alternative examples, the water supply device 3 is provided with the filter 7, so that the water can be filtered, and the water can be prevented from blocking the water supply pump 32, the first water spraying hole 41 and the like, thereby ensuring the normal operation of the drum washing machine 100 and prolonging the service life of the drum washing machine 100.

According to an embodiment of the present application, the inner tub 2 is rotatably mounted to the outer tub 1 through the inner tub bracket 21, thereby being simple and compact in structure.

In some examples, the inner barrel bracket 21 is mounted on the outer barrel 1 and is rotatable relative to the outer barrel 1. The inner cylinder 2 comprises a cylinder body with two open axial ends and a rear cover 22 arranged at the rear end of the cylinder body, wherein the outer periphery of the rear cover 22 forms a folded edge extending along the axial direction of the cylinder body, and the rear end of the cylinder body is connected with the folded edge of the rear cover 22. The inner cylinder bracket 21 is fixed to the connection of the flange of the cylinder body and the rear cover 22 by a connecting member (e.g., a screw), thereby fixing the inner cylinder 2 to the inner cylinder bracket 21 so as to be rotatable with the inner cylinder bracket 21 with respect to the outer cylinder 1.

In some examples, the inner cylinder bracket 21 has a central shaft portion 211 and a frame portion 212, the central shaft portion 211 extends in the axial direction of the outer tub 1 (front-rear direction as shown in fig. 1), and the central shaft portion 211 is rotatably supported on the rear wall of the outer tub 1, the frame portion 212 is connected to the front end of the central shaft portion 211, and the inner cylinder 2 is mounted on the frame portion 212.

Optionally, the frame 212 of the inner cylinder support 21 includes a plurality of (e.g., three) connecting arms distributed along the circumferential direction of the inner cylinder 2, each connecting arm extends in the radial direction of the inner cylinder 2, and the inner end of each connecting arm is connected with the front end of the central shaft 211, and the outer end of each connecting arm is connected with the inner cylinder 2 through a connecting piece, and by connecting the inner cylinder 2 through a plurality of connecting arms, not only the connection reliability and stability of the inner cylinder support 21 and the inner cylinder 2 can be ensured, but also the material consumption of the inner cylinder support 21 can be reduced, the material cost and weight can be reduced, and the cost performance of the drum washing machine 100 can be improved. It is understood that the shelf portion 212 and the central shaft portion 211 may be integrally formed.

In some examples, the rear wall of the outer tub 1 is provided with a mounting hole 111, a bearing housing 51 is provided in the mounting hole 111, a bracket bearing 52 is provided in the bearing housing 51, and the center shaft portion 211 is rotatably supported by the bracket bearing 52. That is, the bearing housing 51 and the bracket bearing 52 mounted in the bearing housing 51 are provided in the mounting hole 111 of the outer tub 1, and the center shaft portion 211 of the inner tub bracket 21 extends in the axial direction of the mounting hole 111 and protrudes into the mounting hole 111 and is mounted to the rear wall of the outer tub 1 through the bracket bearing 52, whereby the inner tub bracket 21 can rotate with respect to the outer tub 1.

In some specific examples, two bracket bearings 52 are disposed in the bearing housing 51 at intervals along the axial direction thereof, and the inner cylinder bracket 21 is rotatably supported on the rear wall of the outer barrel 1 through the two bracket bearings 52, so that the installation stability and the rotation reliability of the inner cylinder bracket 21 are ensured.

In some alternative examples, the pulsator 4 is rotatably installed at a front end of the central shaft portion 211, and the water supply pipe 31 of the water supply device 3 communicates with the axial through hole 2111 in the central shaft portion 211, thereby supplying water in the inner cavity of the outer tub 1 to the pulsator 4.

In other alternative examples, the agitator 4 is rotatably mounted at the front end of the central shaft portion 211, the central shaft portion 211 having an axial through hole 2111. Further, a water supply shaft bearing 53 is disposed in the axial through hole 2111, the drum washing machine 100 further includes a water supply shaft 33, the water supply shaft 33 is supported by the water supply shaft bearing 53, the water supply shaft 33 is not rotated by interference fit with an inner ring of the water supply shaft bearing 53, and the central shaft portion 211 is sleeved on an outer ring of the water supply shaft bearing 53 and is rotatable together. The water supply shaft 33 has a water supply passage 331 therein, a first end (a rear end as shown in fig. 1) of the water supply shaft 33 is hermetically connected to the water supply pipe 31 of the water supply device 3, and a second end (a front end as shown in fig. 1) of the water supply shaft 33 is connected to the pulsator 4, thereby supplying water in the inner cavity of the outer tub 1 to the pulsator 4.

Optionally, the stirrer 4 is arranged at the rear part of the inner cavity of the inner barrel 2, and the rotation axis of the stirrer 4, the rotation axis of the outer barrel 1 and the rotation axis of the inner barrel 2 are coaxial, so that the structure is simple and compact, and the installation is convenient.

As shown in fig. 1 to 3, according to an alternative embodiment of the present application, the pulsator 4 is disc-shaped, the pulsator 4 is rotatably provided at the bottom of the inner tub 2, and the pulsator 4 of disc-shaped structure may sufficiently agitate water in the inner tub 2, thereby further improving the laundry washing effect. The term "disk-like" is to be understood here in a broad sense, for example in the form of a basin, discus, etc.

As shown in fig. 1 to 3, in some examples, the pulsator 4 has a water chamber 42 and a first water spraying hole 41 therein, and the water chamber 42 communicates with the water supply device 3 and the first water spraying hole 41, respectively. When the drum washing machine works, the water supply device 3 can pump water in the inner cavity of the outer drum 1 into the water cavity 42 of the stirrer 4, water in the water cavity 42 is sprayed into the inner drum 2 through the first water spray hole 41, the stirrer 4 rotates under the driving of water flow, so that clothes in the inner drum 2 are stirred, the clothes washing effect is improved, and in the processes of water injection, washing and the like, water is sprayed to the clothes in the inner drum 2 through the first water spray hole 41, so that the clothes soaking effect can be improved.

In some specific examples, the pulsator 4 is a pulsator, i.e., a pulsator is provided at the bottom of the inner tub 2 of the drum washing machine 100.

In the clothes washing process, the clothes are lifted and fallen down in the inner cylinder 2, and then lifted and fallen down again, so that the clothes can be washed cleanly, and meanwhile, under the action of the impeller, the water flow in the inner cylinder 2 forms vortex which is rotated in a right-handed way and a left-handed way, and drives clothes to rotate and tumble, so that the stirring and washing effects of the clothes are further improved. Thereby, the rotation of the inner cylinder 2 and the rotation of the pulsator jointly act to generate various water flows, so that the washing effect is improved, and the washing time is shortened.

Further, the pulsator has a water chamber 42 and a first water spraying hole 41 therein, and the water chamber 42 communicates with the water supply device 3 and the first water spraying hole 41, respectively. When the drum washing machine works, the water supply device 3 can pump water in the inner cavity of the outer drum 1 into the water cavity 42 of the pulsator, water in the water cavity 42 is sprayed into the inner drum 2 through the first water spray holes 41, the pulsator rotates under the driving of water flow, so that water in the inner drum 2 is stirred, the clothes washing effect is improved, and in the processes of water injection, washing and the like, water is sprayed into the inner drum 2 through the first water spray holes 41, so that the clothes soaking effect can be improved.

As shown in fig. 2 and 3, in some examples, a front surface of the pulsator (i.e., a surface facing the laundry access opening of the drum washing machine 100) is provided with a plurality of ribs 43 spaced apart in a circumferential direction of the pulsator, each rib 43 extending in a radial direction of the pulsator, and the first water spray holes 41 are formed in at least a portion of the ribs 43. When the clothes are washed, the first water spraying holes 41 spray water towards the inner cavity of the inner cylinder 2, and the ribs 43 can enable water in the inner cylinder 2 to generate vortex flow so as to drive the clothes to rotate and roll, so that the clothes washing effect is improved.

In some examples, the ribs 43 include first ribs 431 and second ribs 432 smaller than the first ribs 431, the first ribs 431 and the second ribs 432 are alternately arranged along the circumferential direction of the pulsator, the first water spray holes 41 are formed in the first ribs 431, a sufficient number of the first water spray holes 41 are ensured, and thus water spray force is ensured, and since the plurality of first water spray holes 41 are alternately arranged in groups, the uniformity of wetting of the laundry by the water in the inner tub 2 can be ensured, thereby improving the laundry wetting effect.

In some specific examples, the first ribs 431 are arc-shaped bar-shaped ribs, and a plurality of first water spraying holes 41 are provided on one side of each first rib 431 at intervals along the length direction of the first rib 431. Specifically, each of the first ribs 431 has a first side surface and a second side surface, which are disposed opposite to each other in the circumferential direction of the pulsator, and the side surface of each of the first ribs 431 in the same direction is provided with a plurality of first water spray holes 41, so that the water spray directions of the first water spray holes 41 on each of the first ribs 431 are uniform, and it is ensured that the water flow can generate a sufficiently large driving force to drive the pulsator to rotate reversely with respect to the water flow spray direction.

As shown in fig. 2, in some alternative examples, in order to increase the spraying area, on the premise of not influencing the driving force of the water flow, a second water spraying hole 46 may be further arranged on the impeller cap in the center of the impeller (i.e. the impeller center part 45 in fig. 2), and an axial third water spraying hole 48 is arranged on the front end surface of the convex rib 43, so that the water in the water cavity 42 is quickly sprayed into the inner cylinder 2, thereby further improving the clothes soaking effect and increasing the water flow visual effect. It is understood that the opening directions of the second and third water spray holes 46 and 48 may be parallel to the rotation axis of the pulsator.

A specific embodiment and operation of the drum washing machine 100 according to an embodiment of the present application will be described with reference to fig. 1 to 3.

As shown in fig. 1 to 3, a drum washing machine 100 according to an embodiment of the present application includes: the device comprises an outer barrel 1, an inner barrel 2, an inner barrel bracket 21, a water supply device 3, a stirrer 4 and a filter 7.

The axis of the outer tub 1 extends in the front-rear direction, that is, the axis of the outer tub 1 extends horizontally in the left-right direction, the front side of the inner tub outer tub 1 is opened, the rear wall of the outer tub 1 has a central flange portion 11 extending rearward, the central flange portion 11 is provided with a mounting hole 111, and the mounting hole 111 is provided with a bearing housing 51.

The inner cylinder 2 extends in the front-rear direction, the inner cylinder 2 includes a cylinder body whose both ends in the axial direction are open, and a rear cover 22 provided at the rear end of the cylinder body, the front end of the cylinder body is open to form a laundry taking-and-putting port, and the inner cylinder 2 is rotatably mounted on the outer tub 1 through an inner cylinder bracket 21.

The inner tube holder 21 has a center shaft portion 211 and a frame portion 212. The inner tube 2 is mounted on the frame 212. The center shaft portion 211 is rotatably supported by a bracket bearing 52 provided in the bearing housing 51, and an outer tub seal ring 62 is further provided between the center shaft portion 211 and the bearing housing 51, and a front end surface of the center shaft portion 211 exceeds a front end surface of the water supply shaft 33 in a forward direction. The central shaft portion 211 has an axial through hole 2111, the water supply shaft 33 is provided in the axial through hole 2111, the water supply shaft 33 is supported in the central shaft portion 211 by the water supply shaft bearing 53, the water supply shaft 33 is not rotated by interference fit with an inner ring of the water supply shaft bearing 53, and the central shaft portion 211 is fitted over an outer ring of the water supply shaft bearing 53 and rotates together with the outer ring. And a water inlet sealing ring 61 is arranged between the front end of the water supply shaft 33 and the inner wall of the axial through hole 2111, and a water supply channel 331 is arranged in the water supply shaft 33.

The water supply device 3 comprises a water supply pipe 31 and a water supply pump 32 arranged on the water supply pipe 31, a first end of the water supply pipe 31 is communicated with the bottom of the inner cavity of the outer barrel 1, a second end of the water supply pipe 31 is connected with the rear end of the water supply shaft 33 in a sealing mode, the front end of the water supply pipe 31 is communicated with the water supply channel 331, a filter 7 is arranged on the water supply pipe 31, and the filter 7 is located upstream of the water supply pump 32 in the water flow direction.

The agitator 4 is a pulsator, and the pulsator is rotatably mounted at the front end of the central shaft portion 211 through a pulsator bearing 54, the outer periphery of the pulsator is provided with a skirt portion 44 extending rearward, the front surface of the rear cover 22 of the inner cylinder 2 is provided with a circumferential groove 221, and the skirt portion 44 is located in the circumferential groove 221. The impeller is internally provided with a water cavity 42 and a first water spraying hole 41, a second water spraying hole 46 and a third water spraying hole 48, the water cavity 42 is provided with a water inlet 421, the front end face of the central shaft part 211 penetrates through the water inlet 421 of the water cavity 42 and stretches into the water cavity 42, the water inlet 421 is communicated with the water supply pipe 31, the first water spraying hole 41 is used for spraying water supplied into the water cavity 42 by the water supply device 3 into the inner cylinder 2 through the water inlet 421, and the water sprayed into the inner cylinder 2 through the first water spraying hole 41 drives the impeller 2 to rotate. The second and third water spray holes 46 and 48 are used to spray the water supplied from the water supply device 3 into the water chamber 42 through the water inlet 421 into the inner tub 2 to enhance the wetting of the laundry.

The front surface of the pulsator is provided with ribs 43 arranged at intervals along the circumferential direction of the pulsator and extending in the radial direction of the pulsator, the ribs 43 comprise first ribs 431 and second ribs 432 smaller than the first ribs 431, the first ribs 431 and the second ribs 432 are alternately arranged along the circumferential direction of the pulsator, and a plurality of first water spray holes 41 arranged at intervals along the length direction of the first ribs 431 are arranged on one side surface of each first rib 431.

In some examples, the pulsator is mounted at the front end of the central shaft portion 211 through the pulsator connection seat 47 and the pulsator bearing 54 provided between the pulsator connection seat 47 and the central shaft portion 211, a water chamber gasket 63 is provided between the pulsator connection seat 47 and the central shaft portion 211, and the water chamber gasket 63 is sealingly sleeved at the front end of the central shaft portion 211, thereby ensuring the sealability of the water chamber 42.

In the above embodiment, the axes of the outer tub 1 and the inner tub 2 extend horizontally in the front-rear direction, alternatively, the axes of the outer tub 1 and the inner tub 2 may be inclined at an angle.

When the drum washing machine 100 is used, water is injected into the inner drum 2 by manual operation or program control, in the washing program, the water supply pump 32 of the water supply device 3 is started, so that water in the inner cavity of the outer drum 1 sequentially passes through the water supply pipe 31, the filter 7, the water supply pump 32 and the water supply shaft 33 to enter the water cavity 42 of the pulsator, the water in the water cavity 42 is sprayed into the inner drum 2 through the first water spray hole 41 on the pulsator, and the pulsator is driven to rotate by the water flow. Of course, the water supply pump 32 may be turned on during the water injection as needed to wet the laundry.

In the washing process, as the inner cylinder 2 rotates, clothes are continuously lifted and fall down in the inner cylinder 2 and then lifted and fall down again, meanwhile, under the action of the impeller, water flow in the inner cylinder 2 forms vortex which is timely and leftwards, and the clothes are driven to rotate and roll, so that the clothes washing effect is improved. In addition, water is sprayed into the inner cylinder 2 through the first water spraying holes 41, so that not only can power the rotation of the pulsator, but also the clothes soaking effect can be further improved.

Therefore, the drum washing machine 100 according to the embodiment of the present application has a simple and novel structure, is convenient to operate, has a good laundry washing effect, a good soaking effect, and a better user experience.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

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

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims

1. A drum washing machine, comprising:

an outer tub;

an inner cylinder rotatably provided in the outer tub;

a water supply device;

the stirrer is arranged in the inner cylinder and connected with the water supply device, and is driven to rotate by water supplied by the water supply device;

the stirrer is arranged at the rear part of the inner cavity of the inner cylinder, and the rotation axis of the stirrer, the rotation axis of the outer cylinder and the rotation axis of the inner cylinder are coaxial;

the stirrer is disc-shaped;

the stirrer is internally provided with a water cavity communicated with the water supply device and a first water spraying hole used for spraying water in the water cavity into the inner cylinder, and the opening direction of the first water spraying hole forms a preset included angle with the rotation axis of the stirrer.

2. The drum washing machine as claimed in claim 1, wherein the pulsator has a first water spray hole for spraying water supplied from the water supply device into the inner tub, wherein the pulsator is driven to rotate by spraying water into the inner tub through the first water spray hole.

3. The drum washing machine as claimed in claim 2, wherein the first water spray hole is provided with a nozzle.

4. The drum washing machine as claimed in claim 1, wherein the water supply device includes a water supply pipe and a water supply pump, a first end of the water supply pipe being in communication with the outer tub to supply water in the outer tub to the pulsator through a second end of the water supply pipe.

5. The drum washing machine as claimed in claim 4, wherein the first end of the water supply pipe is communicated with the bottom of the inner cavity of the tub.

6. The drum washing machine as claimed in claim 1, wherein the water supply device is provided with a filter.

7. The drum washing machine as claimed in any one of claims 1 to 6, wherein the inner tub is rotatably mounted to the outer tub by an inner tub bracket.

8. The drum washing machine as claimed in claim 7, wherein the inner drum bracket has a central shaft portion and a frame portion, the inner drum being mounted on the frame portion, the central shaft portion being rotatably supported on a rear wall of the outer tub.

9. The drum washing machine as claimed in claim 8, wherein a mounting hole is provided at a rear wall of the tub, a bearing housing is provided in the mounting hole, and the central shaft portion is rotatably supported by a bracket bearing provided in the bearing housing.

10. The drum washing machine as claimed in claim 8, wherein the pulsator is rotatably installed at a front end of the central shaft portion, and the water supply device supplies water to the pulsator through an axial through hole in the central shaft portion.

11. The drum washing machine as claimed in claim 8, further comprising a water supply shaft having a water supply passage therein, the pulsator rotatably mounted at a front end of the central shaft portion, the central shaft portion having an axial through hole, the water supply shaft being provided in the axial through hole and supported by a water supply shaft bearing provided in the axial through hole, a first end of the water supply shaft being connected to the water supply device to supply water to the pulsator through a second end of the water supply shaft.

12. The drum washing machine as claimed in claim 1, wherein the pulsator is a pulsator.

13. The drum type washing machine as claimed in claim 12, wherein the pulsator has a water chamber communicating with the water supply device and a first water spray hole for spraying water in the water chamber into the inner tub, wherein the pulsator is driven to rotate by spraying water into the inner tub through the first water spray hole.

14. The drum type washing machine as claimed in claim 13, wherein the pulsator is provided at a front surface thereof with ribs spaced apart in a circumferential direction of the pulsator and extending in a radial direction of the pulsator, and the first water spray holes are formed in the ribs.

15. The drum washing machine as claimed in claim 14, wherein the bead includes a first bead and a second bead smaller than the first bead, the first bead and the second bead being alternately arranged along a circumferential direction of the pulsator, the first water spray holes being provided on the first bead.

16. The drum washing machine as claimed in claim 15, wherein the first bead is an arc-shaped strip bead, and a side surface of the first bead is provided with a plurality of the first water spray holes spaced apart along a length direction of the first bead.

17. The drum type washing machine as claimed in claim 13, wherein the pulsator center has a second water spray hole for spraying water in the water chamber into the inner tub.

18. The drum washing machine as claimed in claim 14, wherein the bead front end surface has a third water spray hole for spraying water in the water chamber into the inner tub.

19. A drum washing machine as claimed in any one of claims 12 to 18 wherein a circumferential groove is provided on the front surface of the rear cover of the inner drum, the outer periphery of the pulsator being provided with a rearwardly extending skirt which is located within the circumferential groove.

20. The drum washing machine as claimed in claim 1, wherein the inner drum is rotatably mounted on the outer tub by an inner drum bracket having a central shaft portion and a frame portion, the inner drum being mounted on the frame portion,

the rear wall of the outer barrel is provided with a mounting hole, a bearing seat is arranged in the mounting hole, the central shaft part is rotatably supported by a bracket bearing arranged in the bearing seat,

the stirrer is a pulsator, the pulsator is provided with a water cavity and a first water spraying hole, the water cavity is provided with a water inlet, the first water spraying hole is used for spraying water supplied into the water cavity by the water supply device into the inner cylinder through the water inlet, the pulsator is rotatably arranged at the front end of the central shaft part through a pulsator bearing, the pulsator is driven to rotate by spraying water into the inner cylinder through the first water spraying hole,

the central shaft part is provided with an axial through hole, and a water supply shaft is supported in the axial through hole through a water supply shaft bearing;

the water supply device comprises a water supply pipe and a water supply pump arranged on the water supply pipe, wherein the first end of the water supply pipe is communicated with the outer barrel, the second end of the water supply pipe is connected with the rear end of the water supply shaft in a sealing way, and a water supply channel which is used for communicating the water supply pipe with the water inlet of the water cavity is arranged in the water supply shaft.

21. The drum washing machine as claimed in claim 20, wherein the rear wall of the tub has a center flange portion, and the bearing housing is provided in the center flange portion.

22. The drum washing machine as claimed in claim 20, wherein a front end surface of the central shaft portion exceeds a front end surface of the water supply shaft in a forward direction and protrudes into the water chamber through the water inlet.

23. The drum type washing machine as claimed in claim 20, wherein a water inlet gasket is provided between a front end of the water supply shaft and an inner wall of the axial through hole.

24. The drum type washing machine as claimed in claim 20, wherein the pulsator is mounted at a front end of the central shaft portion through a pulsator coupling seat and the pulsator bearing provided between the pulsator coupling seat and the central shaft portion, a water chamber sealing pad is provided between the pulsator coupling seat and the central shaft portion, and the water chamber sealing pad is hermetically sleeved at the front end of the central shaft portion.

25. The drum washing machine as claimed in claim 20, wherein an outer tub packing is provided between the bearing housing and the central shaft portion.

26. A drum washing machine as claimed in any one of claims 20 to 25 wherein a circumferential groove is provided on a front surface of the rear cover of the inner tub, the outer periphery of the pulsator being provided with a rearwardly extending skirt, the skirt being located within the circumferential groove.

27. The drum washing machine as claimed in claim 26, wherein a filter is provided on the water supply pipe.

28. The drum type washing machine as claimed in claim 26, wherein the pulsator is provided at a front surface thereof with beads spaced apart in a circumferential direction of the pulsator and extending in a radial direction of the pulsator, and the first water spray holes are formed in the beads.

29. The drum washing machine as claimed in claim 28, wherein the beads include first beads and second beads smaller than the first beads, the first beads and the second beads being alternately arranged in a circumferential direction of the pulsator, and each of the first beads being provided on one side thereof with a plurality of the first water spray holes spaced apart in a length direction of the first beads.