EP4324975A1

EP4324975A1 - Clothes treating apparatus

Info

Publication number: EP4324975A1
Application number: EP22787304.9A
Authority: EP
Inventors: Kai Liu; Xiaochun Liu; Fangyu LI; Yongshun HOU
Original assignee: Qingdao Haier Drum Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Drum Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-04-13
Filing date: 2022-03-14
Publication date: 2024-02-21
Also published as: WO2022218074A1

Abstract

A clothing treatment device, the clothing treatment device includes a drum (1), an outer end cap (2) is provided at the center of the drum bottom (11) of the drum (1), and an inner end cap (3) is provided at the center of the drum bottom (11) which is provided inside the outer end cap, the inner peripheral wall of the outer end cap (2), the outer peripheral wall of the inner end cap (3), and the drum bottom (11) form a chamber (4), and the chamber (4) is divided into a water inlet channel (41) and an air exchange channel (42) which are independent of each other. (41) The water inlet channel (41) introduces external water into the drum (1), and the air exchange channel (42) communicates the inside and outside of the drum (1). By dividing the chamber (4) formed by the inner peripheral wall of the outer end cap (2), the outer peripheral wall of the inner end cap (3), and the bottom of the drum (11) into the water inlet channel (41) and the air exchange channel (42), the air exchange channel (42) is set close to the water inlet channel (41), so that the air pressure at the water inlet channel (41) is consistent with the outside of the drum (1), so as to avoid the occurrence of the phenomenon that the pressure at the water inlet of the non-porous drum is too large or too small and affects the water inlet water flow.

Description

TECHNICAL FIELD

The present disclosure belongs to the technical field of household appliances, and specifically relates to a clothing treatment device.

BACKGROUND

In an existing drum-type washing machine, a housing is generally provided, and an outer drum is installed internally for holding washing water, a drum provided inside the outer drum for holding washing materials, a drum shaft provided at the bottom of the drum, and a motor provided at the rear part of the outer drum for driving the drum shaft to rotate to drive the drum. Generally, a large amount of dirt is retained between the inner and outer drums in the existing drum washing machine. In order to avoid contamination of the washing water, the applicant has previously proposed a non-porous drum washing machine which combines the inner and outer drums into a single one, so as to overcome the problem of retaining dirt between the inner and outer drums.
Existing non-porous drum washing machines have the following problems: since the drum integrates the functions of both a rotating inner drum and a water-containing outer drum, it is impossible to utilize the existing water inlet structure of the washing machine to supply water to it. And, due to the closed setup of the drum, it is necessary to install an air-exchanging structure on the drum in order to ensure that the air pressure inside the drum is balanced with that of the outside world. Therefore, how to set the air exchange structure and water inlet structure on the non-porous drum washing machine, especially the water inlet structure and the air exchange structure to match the setup, in order to ensure the stability of the water pressure at the water inlet, it has become an urgent technical problem to be solved.
In view of this, the present disclosure is proposed.

SUMMARY

The technical problem to be solved by the present disclosure is to overcome the deficiencies in the prior art, and to provide a clothing treatment device for the purpose of realizing the purpose of integrally providing an air exchange and a water intake structure in a non-porous drum washing machine. And, a further purpose of the present disclosure is to provide a clothing treatment device for the purpose of realizing the purpose of regulating the water intake pressure of the non-porous drum and stabilizing the water intake water flow.
In order to solve the above technical problems, the present disclosure adopts the basic concept of the technical solution:
The present disclosure provides a clothing treatment device comprising a drum, a center of the drum bottom of the drum is provided with an outer end cap, the center of the drum bottom is further provided with an inner end cap being sleeved in the outer end cap the inner peripheral wall of the outer end cap, the outer peripheral wall of the inner end cap and the drum bottom forming a chamber, and the chamber is divided into mutually independent a water inlet channel and an air exchange channel, the water inlet channel introduces the outside water into the drum, and the air exchange channel are communicates the inside and outside of the drum.
Further, the inner and outer end caps are both open on one side of a groove-like structure, the inner and outer end caps are fastened at the center of the drum bottom, the outer peripheral wall of the inner end cap is provided with a circle of a first bump, the first bump is connected to the inner peripheral wall of the outer end cap, the chamber on the rear side of the first bump constitutes a water inlet channel, and the chamber on the front side of the first bump constitutes an air exchange channel.
Further, the inner peripheral wall of the outer end cap is provided with a ring of second bumps, and a rear side of the first bump abuts a front side of the second bumps.
Further, the inner peripheral wall of the inner end cap and the drum bottom together enclose a cavity, the drum bottom is connected to the drum shaft, the end of the drum shaft passes through the center of the drum bottom and is inserted into the cavity against the inner peripheral wall of the inner end cap, an interior of the drum shaft is hollow to form a first flow channel, and the first flow channel communicates the water inlet channel and an external water inlet pipe.
Further, a center of the inner end cap is provided with a water hole, the first flow channel is communicated the inlet flow channel through the water hole, the inner end cap is provided with a first annular sealing ring at the water hole, and the end of the drum shaft is against the first annular sealing ring;
Preferably, the inner and outer end caps, the water holes, the first flow channel, and the first annular sealing ring are provided coaxially with the drum.
Further, the outer end cap is provided with a plurality of first through-holes, each of the first through holes connecting the interior of the drum with the water inlet channel.
Preferably, the outer end cap is provided with a plurality of circles of through-hole units, each circle of the through-hole units comprising a plurality of first through-holes disposed in a circle along a circumferential direction, the first through-holes in two adjacent circles of the through-hole units being staggered arranged.
Further, all of the first through-holes in the at least one circle of through-hole units are each communicated with a second flow channel in a strip shape, the second flow channel is provided on the outer end cap and extends from the first through-hole to the open side of the outer end cap;
Preferably, the second flow channel is a groove-like structure, an opening of second flow channel facing upward.
Further, the outer end cap is further provided with a plurality of second through-holes, each of the second through-holes communicates the inside of the drum with the air exchange channel, and a plurality of exhaust holes are provided on the drum bottom, each of exhaust holes communicates the air exchange channel with the outside of the drum.
Further, the inner end cap is provided with a third through-hole communicated with the air exchange channel, and the drum bottom located in the cavity is provided with the exhaust hole.
Preferably, the open side of the inner end cap is provided with a number of grooves along the circumference, and each of the grooves and the drum bottom together enclose the third through-hole.
Further, a second annular sealing ring is provided on the drum bottom, and the open side of the outer end cap abuts against the second annular sealing ring.
Preferably, the drum bottom is provided with a ring of depressions with openings toward the outer end cap, and the second annular sealing ring is provided within the depressions;
Further preferably, the second annular sealing ring is provided with a convex rib on the side of the second annular sealing ring towards the outer end cap.
Further preferably, the second annular sealing ring is provided coaxially with the drum.
After adopting the above technical solution, the present disclosure has the following beneficial effects compared with the prior art.
By dividing the chamber formed by the inner peripheral wall of the outer end cap, the outer peripheral wall of the inner end cap and the drum bottom into a water inlet channel and an air exchange channel, the air exchange channel is set close to the water inlet channel, so that the air pressure in the water inlet channel is consistent with the outside of the drum, so as to avoid the occurrence of the phenomenon that the pressure at the water inlet of the non-porous drum is too large or too small and affects the water inlet water flow.
Specific embodiments of the present disclosure are described in further detail below in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used as part of the present disclosure to provide a further understanding of the disclosure, and the schematic embodiments of the disclosure and their illustrations are used to explain the disclosure but do not constitute an undue limitation of the disclosure. Obviously, the accompanying drawings in the following description are only some of the embodiments, and other accompanying drawings may be obtained on the basis of these drawings for a person of ordinary skill in the art without creative labor.

FIG. 1 is a schematic diagram of a structure of a clothing treatment device provided by an embodiment of the present disclosure;
FIG. 2 is an exploded view of the structure of a clothing treatment device provided by an embodiment of the present disclosure;
FIG. 3 is a partially enlarged view of a clothing treatment device provided by an embodiment of the present disclosure;
FIG. 4 is a partially enlarged view of a clothing treatment device provided in another embodiment of the present disclosure;
FIG. 5 is a schematic diagram of the structure of an inner end cap in a clothing treatment device provided by an embodiment of the present disclosure.

In the figure: 1-drum; 11-drum bottom; 111-exhaust hole; 112-depression; 12-drum shaft; 121-first flow channel; 2-outer end cap; 21-second bump; 22-through-hole unit; 221-first through-hole; 23-second flow channel; 24-second through-hole; 3-inner end cap; 31-first bump; 32- water hole; 33-third through-hole; 331-groove; 4- chamber; 41-water inlet channel; 42-air exchange channel; 5-cavity; 6-first annular sealing ring; 7-second annular sealing ring; 8-positioning structure; 81-positioning projection; 811-positioning portion; 812-snap portion; 82-positioning rib; 83-connecting rib; 84-reinforcing rib.
It is to be noted that these accompanying drawings and textual descriptions are not intended to limit in any way the scope of the ideas of the present disclosure, but rather to illustrate the concepts of the disclosure for those skilled in the art by reference to particular embodiments.

DETAILED DESCRIPTION

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments will be described clearly and completely in the following in conjunction with the accompanying drawings in the embodiments of the present disclosure, and the following embodiments are used to illustrate the present disclosure but are not used to limit the scope of the present disclosure.
In the description of the present disclosure, it is to be noted that the terms "top", "bottom", "front", "back", "left", "right", "vertical", "inner", "outer "etc. indicate an orientation or positional relationship based on the orientations or positional relationships shown in the accompanying drawings are intended only to facilitate and simplify the description of the present disclosure and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as a limitation of the present disclosure.
In the description of the present disclosure, it is to be noted that, unless otherwise expressly specified and limited, the terms "mounted", "related", "connected" are to be understood in a broad sense, e.g., they can be, for example, it may be a fixed connection, a removable connection, or a connection in one piece; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium. For a person of ordinary skill in the art, the specific meaning of the above terms in the context of the present disclosure may be understood in a specific context.
As shown in FIGS. 1-3, the present disclosure provides a clothing treatment device including a drum 1, an outer end cap 2 is provided at the center of a drum bottom 11 of the drum 1, and an inner end cap 3 sleeved inside the outer end cap is provided at the center of the drum bottom 11. The inner peripheral wall of the outer end cap 2, the outer peripheral wall of the inner end cap 3, and the drum bottom 11 collectively form a chamber 4, and the chamber 4 is divided into mutually independent water inlet channel 41 and air exchange channel 42. The water inlet channel 41 introduces water outside into the drum 1, and the air exchange channel 42 connects the inside and outside of the drum 1.
In the embodiment of the present disclosure, the clothing treatment device includes a drum 1, the drum 1 is a drum structure without normal thorough holes, the drum 1 can independently hold washing water and rotate when the clothing treatment device performs the washing procedure. The rotating force is used to beat the clothing and water to realize the effect of washing the clothing in the drum 1, which avoids the problem of cross-flowing of washing water inside and outside of the drum 1 in the course of the working process of the clothing treatment device. It avoids the problem that the washing water crosses the inside and outside of the drum 1 during the working process of the clothing treatment device, which causes the washing water to be contaminated by the dirt and bacteria accumulated outside the drum 1 and thus unable to thoroughly clean the clothing; the clothing treatment device is a washing machine.
The water inlet channel 41 introduces the washing machine water into the drum 1, realizing the purpose of water inlet into the drum 1; at the same time, the air exchange channel 42 connects the inside and outside of the drum 1, so that when the clothing treatment equipment is in operation, the drum 1, which constitutes a sealed container, exchanges gases with the outside world through the air exchange channel 42, and adjusts the air pressure in the drum 1, thus realizing the normal water inlet and outlet operation of the clothing treatment equipment.
Through the above setup, the inner end cap 3 and the outer end cap 2 provided at the drum bottom 11 of the drum 1 are integrated with the water intake and air intake structure of the non-porous drum 1, which simplifies the equipment and reduces the cost. And, by integrating the water intake channel 41 and the air exchange channel 42 on the above mentioned end caps, the air exchange channel 42 is set up close to the water intake channel 41, so that the air pressure at the water intake channel 41 is consistent with that at the outside of the drum 1, avoiding the occurrence of too much or too little pressure at the water intake which affects the water intake.
The outer end cap 2 is disposed in the interior of the drum 1, the outer end cap 2 is fastened to the side of the drum bottom 11 of the drum 1 facing the interior, and after the end cap is fastened, a raised structure is formed in the center of the drum bottom 11 of the drum 1 facing inward, so that the above raised structure can be used to lift and agitate the laundry in the drum 1, and thus improve the washing effect.
As shown in FIGS. 2 and 3, in the embodiment of the present disclosure, the inner and outer end caps 2 are both groove-like structures open on one side, the inner and outer end caps 2 are fastened at the center of the drum bottom 11. The outer peripheral wall of the inner end cap 3 is provided with a ring of first bump 31, the first bump 31 is attached to the inner peripheral wall of the outer end cap 2, the chamber 4 at the rear side of the first bump 31 constitutes the water intake channel 41, and the chamber 4 at the front side of the first bump 31 constitutes the air exchange channel 42.
In an embodiment of the present disclosure, the outer end cap 2 and the inner end cap 3 are a groove-like structure open on one side, the inner end cap 3 is fastened to the center of the drum bottom 11, the outer end cap 2 is fastened to the outside of the inner end cap 3, and is fastened to the center of the drum bottom 11. The outer peripheral wall of the inner end cap 3, the inner peripheral wall of the outer end cap 2, and the drum bottom 11 form the chamber 4. There is no connection between the outer peripheral wall of the inner end cap 3 and the outer peripheral wall of the outer end cap 2, and for the purpose of separating the chamber 4 into a front chamber 4 and a rear chamber 4, the front chamber 4 being used as an air exchange channel 42 and the rear chamber 4 being used as a water inlet channel 41. The outer peripheral wall of the inner end cap 3 is provided with a circle of first bump 31, the first bump 31 being used as a separating member, and the separation of the front chamber 4 and the rear chamber 4 is realized by sealing and connecting the first bump 31 with the inner peripheral wall of the outer end cap 2 in a circle.
As shown in FIG. 3, specifically, the inner peripheral wall of the outer end cap 2 is provided with a circle of the second bump 21, and the rear side of the first bump 31 is abutted against the front side of the second bump 21. The first bump 31 and the second bump 21 are abutted against each other in the front and rear direction to realize the sealing connection between the first bump 31 and the inner peripheral wall of the outer end cap 2. In order to realize that the inner end cap 3 is solidly set on the drum bottom 11, the rear side of the first bump 3 1 is abutted against the front side of the second bump 21, the outer end cap 2 serves to clamp the inner end cap 3. Furthermore, face contact between the first bump 31 and the second bump 21 can be realized to increase the sealing between the first bump 31 and the second bump 21; and the rear side of the first bump 31 and the front side of the second bump 21 are both horizontal surfaces extending in the radial direction.
Both the front side and the rear side referred to herein are relative to the front and rear sides of the drum 1. The front side of the drum 1 is the side provided with the laundry drop-in opening.
As shown in FIG. 3, in the embodiment of the present disclosure, the inner peripheral wall of the inner end cap 3 and the drum bottom 11 together enclose a cavity 5. The drum bottom 11 is connected with a drum shaft 12, the end of the drum shaft 12 passes through the center of the drum bottom 11, is inserted into the cavity 5 and abuts against the inner peripheral wall of the inner end cap 3. The interior of the drum shaft 12 is hollowed out to form a first flow channel 121, and the first flow channel 121 is connected to the water inlet channel 41 and the external inlet pipe.
In the embodiment of the present disclosure, the drum shaft 12 on the drum bottom 11 extends in the axial direction, the inner end cap 3 is a groove-like structure open on one side, the inner end cap 3 is snapped onto the drum bottom 11, the inner peripheral wall of the inner end cap 3 and the drum bottom 11 enclose the cavity 5. The drum shaft 12 is inserted into the cavity 5 after passing through the drum bottom 11, and then the end of the drum shaft 12 is abutted against the inner end cap 3, and the first flow channel 121 in the drum shaft 12 extends in the axial direction. The first flow channel 121 has an inlet and an outlet, and the inlet of the first flow channel 121 is connected to an external water inlet pipe, the external water inlet pipe being a water inlet pipe of a washing machine, and the outlet of the first flow channel 121 is communicated to the water inlet channel 41.
When the water is fed, the washing water enters into the first flow channel 121 from the inlet of the first flow channel 121, flows through the first flow channel 121, and then enters into to the inlet flow channel through the outlet of the first flow channel 121, and finally enters into the drum 1 through the outlet of the inlet flow channel, realizing the water feeding of the drum 1.
As shown in FIGS. 2 and 3, in the embodiment of the present disclosure, the inner end cap 3 is provided with a water hole 32 at the center, the first flow channel 121 is communicated to the inlet flow channel through the water hole 32, the inner end cap 3 is provided with a first annular sealing ring 6 at the water hole 32, and the end portion of the drum shaft 12 is abutted against the first annular sealing ring 6.
In the embodiment of the present disclosure, the inner end cap 3 is provided with a water hole 32 at the center of the inner end cap 3, the inner end cap 3 is a groove-like structure, the water hole 32 is provided at the middle of the bottom of the groove-like inner end cap 3. A cross-section of the inner end cap 3 along the axial direction is circular, and the inner end cap 3 is in the shape of a ladder along the axial direction.
The drum shaft 12 is provided with the first annular sealing ring 6 at the offset of the drum shaft 12 and the inner end cap 3, the first annular sealing ring 6 is circular, the water hole 32 is circular, the drum shaft 12 is cylindrical. The size of the inner diameter of the first annular sealing ring 6 is greater than or equal to the radial dimension of the water hole 32, and the size of the inner diameter of the first annular sealing ring 6 is equal to the size of the inner diameter of the end portion of the drum shaft 12.
By setting the first annular sealing ring 6 at the offset of the drum shaft 12 and the inner end cap 3, water leakage reducing the efficiency of water feeding into the drum 1 between the drum shaft 12 and the inner end cap 3 is avoided when water is fed into the drum 1 via the drum shaft 12. Moreover, airtightness independence between the air intake channel and the air exchange channel 42 can be ensured, avoiding the water from flowing into the air exchange channel 42 and the gas from entering the air intake channel. Specifically, the inner and outer end cap 2, the water hole 32, the flow channel, and the first annular seal 6 are coaxially provided with the drum 1.
As shown in FIGS. 2 and 3, in this embodiment of the disclosure, the outer end cap 2 is provided with a number of first through holes 221, each of which connects the interior of the drum 1 to the water inlet channel 41.
In the embodiment of the present disclosure, the first through-hole 221 on the outer end cap 2 communicates the water inlet channel 41 with the interior of the drum 1, and the washing water that enters into the water inlet channel 41 enters into the drum 1 through the first through-hole 221 on the outer end cap 2, and the outer end cap 2 is in the form of a hemispherical structure. The plurality of through-holes can be provided to increase the efficiency of the water inlet into the drum 1.
Specifically, the outer end cap 2 is provided with a plurality of circles of through-hole units 22, each circle of through-hole units 22 includes a number of first through-holes 221 set in a circle along a circumferential direction. The plurality of circles of through-hole units 22 can improve the uniformity of the water intake to the drum 1, preventing the washing water from entering the drum 1 through the first through-holes 221 that are more concentrated and resulting in the water intake being not smooth. The first through-holes 221 in the adjacent two circles of through-hole units 22 are staggered. If the outer end cap 2 is provided with two circles of through-hole units 22, the first through-hole 221 in one circle of through-hole units 22 is disposed between two neighboring through-holes in the other circle of through-hole units 22, to improve the uniformity of the arrangement of the first through-holes 221, to improve the smoothness of the water intake into the drum 1, as well as to enable the intake of water to enter the drum 1 through the other first through-holes 221 when the load inside the drum 1 covers part of the first through-holes 221.
When water is fed, if the load covers the first through-hole 221, the water flow is not smooth and backflow into the inlet channel occurs. Since the inlet channel 41 is part of the chamber formed by the inner peripheral wall of the outer end cap 2, the outer peripheral wall of the inner end cap 3, and the bottom of the drum bottom 11 together, the inlet channel 41 can act as a cushioning chamber blocked by the gasket, preventing the backflow into the air exchange channel 42.
As shown in FIG. 2, in an embodiment of the present disclosure, all of the first through-holes 221 in the at least one circle of the through-hole unit 22 are each connected with a second flow channel 23 in the form of a strip, and the second flow channel 23 is provided on the outer end cap 2 and extends from the first through-holes 221 to the open side of the outer end cap 2.
In the embodiment of the present disclosure, the first through-hole 221 is connected with a second flow channel 23, and when the load covers a portion of the first through-hole 221 of the outer end cap, since the second flow channel 23 is communicated with the first through-hole 221, the second flow channel 23 may guide the washing water to flow into the drum 1 from the second flow channel 221. Specifically, the second flow channel 23 is of a recessed structure, with an opening of the recessed second flow channel 23 facing upward.
As shown in FIG. 2, in the embodiment of the present disclosure, the outer end cap 2 is further provided with a plurality of second through-holes 24, each second through-hole 24 connecting the inner space of the drum 1 to the air exchange channel 42, and a plurality of exhaust holes 111 are provided on the drum bottom 11, and the exhaust holes 111 connect the air exchange channel 42 to the outside of the drum 1.
In the embodiment of the present disclosure, the outer end cap 2 is also provided with a second through-hole 24, the drum 1 is connected to the air exchange channel 42 via the second through-hole 24, and the air exchange channel 42 is connected to the exterior of the drum 1 via the exhaust hole 111, so that when exchanging the air, the air enters into the air exchange channel 42 via the second through-hole 24 and then enters into the exterior of the drum 1 via the exhaust hole 111.
A plurality of second through-holes 24 are located close to the open side of the outer end cap 2, and the plurality of through-holes are provided in a circle along the circumference of the outer end cap 2 to improve the uniformity of the exhaust of the drum 1.
As shown in FIG. 2, in the embodiment of the present disclosure, the inner end cap 3 is provided with a third through-hole 33 connected to the air exchange channel 42, and the drum bottom 11 disposed in the cavity 5 is provided with an exhaust hole 111.
In the embodiment of the present disclosure, specifically, the exhaust hole 111 is provided on the drum bottom 11 located in the cavity 5. Therefore, in order to realize the air exchange of the drum 1, the air exchange channel 42 is connected with the cavity 5 by providing the third through-hole 33 on the inner end cover 3, so as to realize that the air enters into the cavity 5 from the air exchange channel 42 through the third through-hole 33, and is then discharged through the exhaust hole 111. The exhaust holes are specifically provided on the bottom flange of the drum.
When there is overflow of water in the whole machine, the exhaust hole 111 serves as a drainage hole, and the washing water enters into to the air exchange channel 42 through the second through-hole 24, then enters into the cavity 5 through the third through-hole 33, and finally enters into the drainage pump through the exhaust hole 111 on the bottom flange of the drum to be drained and prevented from dangerous occurrences.
The open side of the inner end cap 3 is provided with a number of grooves 331 along the circumferential direction. Each of the grooves 331 and the drum bottom 11 together enclose a third through-hole 33. The grooves 331 provided on the open side of the inner end cap 3 facing the drum bottom 11, the grooves 331 have openings communicating with the air exchange channel 42 and openings communicating with the cavity 5; the inner peripheral walls of the grooves and the drum bottom 11 form the inner peripheral walls of the third through-hole 33; a number of grooves are provided along the circumferential direction of the inner end cap 3 in a circle.
As shown in FIGS. 2 and 3, in this embodiment of the disclosure, the drum bottom 11 is provided with a second annular seal 7, and the open side of the outer end cap 2 rests against the second annular sealing ring 7.
In the embodiment of the present disclosure, a second annular sealing ring 7 is provided between the drum bottom 11 and the outer end cap 2, increasing the sealing between the drum bottom 11 and the outer end cap 2, increasing the sealing of the air exchange channel 42, and realizing the smoothness of the air exchange in the air exchange channel 42. And because the clothes bring up water during the washing process, it is possible to prevent the washing water from flowing out of the gap between the drum bottom 11 and the outer end cap 2, and avoiding the occurrence of a water leakage situation.
Specifically, the drum bottom 11 is provided with a ring of depressions 112 with openings toward the outer end cap 2, and the second annular sealing ring 7 is provided in the depressions 112. With a ring of depressions 112 provided on the drum bottom 11, the openings of the depressions 112 are toward the outer end cap 2, and the depressions 112 play a role in positioning the second annular sealing ring 7, reducing the probability of the misalignment of the second annular sealing ring 7, and further increasing the sealing between the drum bottom 11 and the outer end cap 2.
The side of the second annular sealing ring 7 towards the outer end cap 2 is provided with a convex rib to increase the sealing contact between the second annular sealing ring 7 and the outer end cap 2. A number of convex ribs are provided in a circle along the circumferential direction of the second annular sealing ring 7; and the second annular sealing ring 7 is provided in coaxial relation with the drum 1.
As shown in FIGS. 1 and 4, the present disclosure provides a clothing treatment device comprising a drum 1, an outer end cap 2 is provided at the center of a drum bottom 11 of the drum 1, an inner end cap 3 is also provided at the center of the drum bottom 11. The outer peripheral wall of the outer end cap 2, the inner peripheral wall of the inner end cap 3, and the drum bottom 11 together enclose a chamber 4, a water hole 32 is provided at the center of the inner end cap 3 for communicating with the chamber 4, and a positioning structure 8 is provided for locating the inner end cap 3 at the outer peripheral wall of the water hole 32.
In the embodiment of the present disclosure, by utilizing the positioning structure 8 to position the inner end cap 3, it avoids misalignment of the out inner end cap 3 during installation, avoids repeated adjustments of the position of the inner end cap 3, enables the inner end cap 3 to be installed in place, and improves the assembling effect while reducing the waste of manpower and time.
When the water is fed, the washing water passes through the water hole 32 and enters into, the chamber 4 jointly enclosed by the outer peripheral wall of the outer end cap 2, the inner peripheral wall of the inner end cap 3 and the drum bottom 11, and the washing water then enters into the drum 1 from the chamber 4.
As shown in FIGS. 2, 4 and 5, in the embodiment of the present disclosure, the inner end cap 3 is a groove-like structure open on one side, the inner end cap 3 is snapped at the center of the drum bottom 11, and the positioning structure 8 comprises a number of positioning projections 81 formed by the inner peripheral wall of the inner end cap 3 extending in the axial direction, and the drum bottom 11 is provided with a number of positioning holes 13, and the positioning projections 81 are slidably snapped into the positioning holes 13.
In the embodiment of the present disclosure, the inner end cap 3 is a groove-like structure with one side open, and a cavity 5 is formed between the inner peripheral wall of the inner end cap 3 and the drum bottom 11 to provide a certain amount of space for the inner end cap 3 to form a positioning projection 81 along the axial extension. The positioning projection 81 is formed by the axial extension of the inner end cap 3, and the drum bottom 11 is provided with positioning holes 13 corresponding to the positioning projection 81, the positioning projection 81 slides into the positioning holes 13 to realize the positioning of the inner end cap 3 on the drum bottom 11.
The water hole 32 and the inner end cap 3 are provided coaxially with the drum 1, and a plurality of positioning projections 81 are distributed in a circle along the circumference of the water hole 32, so that the positioning force on the inner end cap 3 is evenly distributed, providing the solidity of the inner end cap 3.
As shown in FIG. 2, FIG. 4 and FIG. 5, specifically, the positioning projection 81 is cylindrical, the axis line of the positioning projection 81 is parallel to the axis line of the water hole 32, the positioning projection 81 has an axially distributed positioning portion 811 and a snap portion 812. The positioning portion 811 slidably passes out of the positioning hole 13, and the snap portion 812 is snap-in to the positioning hole 13. The positioning portion 811 firstly slidably passes out of the positioning hole 13, then the snap portion 812 snaps into the positioning hole 13, and the positioning portion 811 has a positioning guide effect on the snap portion 812 before the snap portion 812 snaps into the positioning hole 13, so that the snap portion 812 can be accurately snapped into the positioning hole 13, and the assembling efficiency of the inner end cap 3 is increased.
Wherein, the radial dimension of the positioning portion 811 gradually increases from the positioning portion 811 to the snap portion 812, and the maximum radial dimension of the positioning portion 811 is the same as the radial dimension of the snap portion 812. After the positioning portion 811 is gradually slid out of the positioning hole 13, with the gradual increase of the radial dimension of the positioning portion 811, when the positioning portion 811 is slid out to reach the maximum radial dimension, by momentarily exerting a force that the snap portion 812 is tightly and solidly seated in the positioning hole 13, realizing the positioning of the inner end cap 3.
As shown in FIGS. 2 and 4, in the embodiment of the present disclosure, a drum shaft is connected to the drum bottom 11, the interior of the drum shaft is hollow to form a first flow channel 121. A perforation is provided at the center of the drum bottom 11, the drum shaft passes through the drum bottom 11 through the perforation, is inserted into the inner end cap 3 against the inner end cap 3 over the peripheral wall of the water hole 32. And the first flow channel 121 communicates with the chamber 4 through the water hole 32 to, and a plurality of positioning holes 13 are provided in the peripheral wall of the perforation.
In the embodiment of the present disclosure, the drum shaft on the drum bottom 11 extends in the axial direction, the inner peripheral wall of the inner end cap 3 and the drum bottom 11 enclose a cavity 5. The center of the drum bottom 11 is provided with the perforation, the drum shaft is inserted into the cavity 5 after passing through the perforation and the drum bottom 11, then the end of the drum shaft is resisted against the inner end cap 3. The first flow channel 121 inside the drum shaft extends in the axial direction, the first flow channel 121 has a water inlet and a water outlet, the water inlet of the first flow channel 121 is communicated to an external water inlet pipe, the external water inlet pipe being a water inlet pipe of a washing machine, and the water outlet of the first flow channel 121 is communicated to the cavity 4.
When input water, the washing water enters into the first flow channel 121 from the water inlet of the first flow channel 121, flows through the first flow channel 121, and then enters into the chamber 4 through the water outlet of the first flow channel 121, and finally enters into the drum 1 through the water outlet of the chamber 4, realizing the water intake of the drum 1. The perforation, the drum shaft and the drum 1 are coaxially provided, and a number of positioning holes 13 are disposed along the circumferential direction of the perforation in a circle and the spacing between two adjacent positioning holes 13 are equally spaced from each other.
As shown in FIG. 4, in an embodiment of the present disclosure, the positioning structure 8 comprises a number of positioning ribs 82 formed by the inner peripheral wall of the inner end cap 3 extending in the radial direction, the outer peripheral wall of the drum shaft is provided with a number of positioning grooves 124, and the positioning ribs 82 are inserted into the positioning grooves 124.
In an embodiment of the present disclosure, the positioning ribs 82 are formed by the inner shaft of the inner end cap 3 extending radially, and the outer shaft of the drum shaft within the cavity 5 formed by the inner shaft of the inner end cap 3 and the drum bottom 11 is provided by a positioning groove 124, and the positioning ribs 82 are inserted into the positioning grooves 124. It is to be noted that the plurality of positioning grooves 124 may be provided at intervals or, alternatively, a plurality of the positioning grooves 124 form a ring of consecutive grooves, the plurality of positioning ribs 82 are inserted into that continuous groove.
Specifically, the drum shaft portion within the cavity 5 is stepped, the drum shaft having a first portion and a second portion along a front-to-rear direction, the first portion being in the front and the second portion being in the rear, and the drum shaft being cylindrical in shape. The radial dimension of the first portion being smaller than the radial dimension of the second portion so that the first portion, the second portion, and the drum bottom 11 form a continuous groove.
A plurality of positioning ribs 82 are distributed in a circle along the circumference of the water hole 32 to increase the uniformity of the positioning of the inner end cap 3.
As shown in FIG. 4, in the embodiment of the present disclosure, the positioning rib 82 is square in shape, the rear side of the positioning rib 82 is affixed to the front side of the positioning groove 124, and the bottom side of the positioning rib 82 is provided affixed to the bottom side of the positioning groove 124.
In embodiments of the present disclosure, the positioning rib 82 is inserted into the positioning groove 124, specifically, the rear side of the positioning rib 82 is affixed to the front side of the positioning groove 124, and the bottom side of the positioning rib 82 is affixed to the bottom side of the positioning groove 124.
As shown in FIGS. 4 and 5, in the embodiment of the present disclosure, the inner peripheral wall of the inner end cap 3 is provided with a number of connecting ribs 83 projecting in the axial direction, the connecting ribs 83 being square in shape, and the front side of the connecting ribs 83 extends radially to form the positioning rib 82. The positioning rib 82 is disposed on the inner peripheral wall of the inner end cap 3 through the connecting ribs 83. The drum shaft on the rear side of the groove is sandwiched between the inner peripheral walls of a number of connecting ribs 83, and the inner peripheral walls of the connecting ribs 83 are provided in close contact with the outer peripheral wall of the drum shaft on the rear side of the groove, which improves the strength of assembly between the positioning rib 82 and the drum shaft 12.
As shown in FIG. 5, in an embodiment of the present disclosure, a reinforcing rib 84 is provided on the side of the connecting rib 83 towards the inner end cap 3, and the reinforcing rib 84 is integrally molded with the connecting rib 83 and the inner peripheral wall of the inner end cap 3.
In the embodiment of the present disclosure, specifically, the connecting rib 83 is provided with two reinforcing ribs 84 to increase the structural strength of the connecting rib 83 and to increase the positioning strength of the inner end cap 3. The reinforcing ribs 84 are of triangular structure, with one side of the reinforcing ribs 84 being adhered to the connecting rib 83, and the other side of the reinforcing ribs 84 being adhered to the inner peripheral wall of the inner end cap 3. The two reinforcing ribs 84 are disposed opposite to each other, respectively located on both sides of the connecting rib 83.
As shown in FIG. 5, in an embodiment of the present disclosure, a plurality of positioning ribs 82 are disposed between the water hole 32 and the plurality of positioning projections 81.
It should be noted that the positioning structure 8 may include only the positioning projection 81, may also include only the positioning rib 82, may also include both the positioning projection 81 and the positioning rib 82, and in embodiments of the present disclosure, the positioning structure 8 includes the positioning projection 81 rib and the positioning projection 81.
The locating projection 82 is provided directly opposite the locating projection 81, and the projection of the locating projection 81 on the connecting rib 83 is between the two reinforcing ribs 84, improving the consistency of the positioning of the locating projection 81 with the locating projection 82.
The above is only a preferred embodiment of the present disclosure, and is not a formal limitation of the present disclosure. Although the present disclosure has been disclosed as a preferred embodiment, it is not intended to limit the present disclosure, and any skilled person familiar with the present patent may, without departing from the scope of the technical scheme of the present disclosure, use the technical content of the above mentioned hints to make some changes or modifications for equivalent changes of equivalent embodiments, but any simple modifications and modifications made to the above embodiments based on the technical substance of the present disclosure are still within the scope of the technical scheme of the present disclosure. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical substance of the present disclosure without departing from the content of the technical scheme of the present disclosure are still within the scope of the present disclosure.

Claims

A clothing treatment device, including a drum, a center of the drum bottom of the drum is provided with an outer end cap, characterized in that the center of the drum bottom is further provided with an inner end cap being sleeved in the outer end cap, an inner peripheral wall of the outer end cap, an outer peripheral wall of the inner end cap and the drum bottom together form a chamber, the chamber is divided into a water inlet channel and an air exchange channel independent from each other, the water inlet channel introduces water to the drum from outside, the air exchange channel communicates inside and outside of the drum.
The clothing treatment device according to claim 1, characterized in that the inner end cap and the outer end cap are both a groove-like structure open on one side, the inner end cap and outer end cap are fastened at the center of the drum bottom, the outer peripheral wall of the inner end cap is provided with a circle of a first bump, the first bump is connected to the inner peripheral wall of the outer end cap, the chamber on a rear side of the first bump constitutes the water inlet channel, and the chamber on a front side of the first bump constitutes the air exchange channel.
The clothing treatment device according to claim 2, characterized in that the inner peripheral wall of the outer end cap is provided with a circle of a second bump, the outer peripheral wall of the inner end cap on the front side of the first bump is affixed to an inner peripheral wall of the second bump, and the rear side of the first bump is abutted against a front side of the second bump.
The clothing treatment device according to claim 2 or 3, characterized in that an inner peripheral wall of the inner end cap and the drum bottom jointly enclose a cavity, the drum bottom is connected with a drum shaft, an end of the drum shaft passes through the center of the drum bottom and is inserted into the cavity against the inner peripheral wall of the inner end cap, an interior of the drum shaft is hollow to form a first flow channel, and the first flow channel communicates the water inlet channel and an external water inlet pipe.
The clothing treatment device according to claim 4, characterized in that a center of the inner end cap is provided with a water hole, the first flow channel is communicated to the water inlet channel through the water hole, the inner end cap is provided with a first annular sealing ring at the water hole, and the end of the drum shaft is set against the first annular sealing ring;
preferably, the inner end cap, the outer end cap, the water hole, the first flow channel, and the first annular sealing ring are set coaxially with the drum.
The clothing treatment device according to claim 4, characterized in that the outer end cap is provided with a plurality of first through-holes, each of the first through-holes communicates the inside of the drum with the water inlet channel;
preferably, the outer end cap is provided with a plurality of circles of through-hole units, each circle of the through-hole units comprises a plurality of the first through-holes disposed in a circle along a circumferential direction, the first through-holes in two adjacent circles of the through-hole units being staggered arranged.
The clothing treatment device according to claim 6, characterized in that all of the first through-holes in the at least one circle of through-hole units are each communicated with a second flow channel in a strip shape, the second flow channel is provided on the outer end cap and extends from the first through-hole to the open side of the outer end cap;
preferably, the second flow channel is a groove-like structure, an opening of second flow channel facing upward.
The clothing treatment device according to any one of claims 1-7, characterized in that the outer end cap is further provided with a plurality of second through-holes, each of the second through-holes communicates the inside of the drum with the air exchange channel, and a plurality of exhaust holes are provided on the drum bottom, each of exhaust holes communicates the air exchange channel with the outside of the drum.
The clothing treatment device according to claim 8, characterized in that the inner end cap is provided with a third through-hole communicated with the air exchange channel, and the drum bottom located in the cavity is provided with the exhaust hole;
preferably, the open side of the inner end cap is provided with a number of grooves along the circumference, and each of the grooves and the drum bottom together enclose the third through-hole.
The clothing treatment device according to any one of claims 1-9, characterized in that a second annular sealing ring is provided on the drum bottom, and the open side of the outer end cap abuts against the second annular sealing ring;
preferably, the drum bottom is provided with a ring of depressions with openings toward the outer end cap, and the second annular sealing ring is provided within the depressions;

further preferably, the second annular sealing ring is provided with a convex rib on a side of the second annular seal towards the outer end cap;

further preferably, the second annular sealing ring is provided coaxially with the drum.
The clothing treatment device according to any one of claims 1-10, characterized in that the inner end cap is provided with a positioning structure for positioning the inner end cap.
The clothing treatment device according to claim 11, characterized in that the positioning structure comprises a number of positioning projections formed by the inner peripheral wall of the inner end cap extending in an axial direction, the drum bottom is provided with a number of positioning holes, and the positioning projections are slidably seated into the positioning holes;
preferably, the plurality of positioning projections are distributed in a circle along the circumference of the water hole.
The clothing treatment device according to claim 12, characterized in that the positioning projection is cylindrical, an axis line of the positioning projection is parallel to an axis line of the water hole, the positioning projection has a positioning portion and a snap portion distributed along the axial direction, the positioning portion slidably penetrates the positioning hole, and the snap portion snaps into the positioning hole;
preferably, a radial dimension of the positioning portion gradually increases from the positioning portion to the snap portion.
The clothing treatment device according to claim 13, characterized in that a perforation is provided in the center of the drum bottom, the drum shaft of the drum passes through the drum bottom through the perforation, and is inserted into the inner end cap against an outer peripheral wall of the water hole of the inner end cap, and the first flow channel passes through the water hole to communicate with the chamber, and a number of the positioning holes are provided in an outer peripheral wall of the perforation;
preferably, the perforation, the drum shaft and the drum are coaxially provided, and a plurality of the positioning holes are distributed in a circle along a circumference of the perforation.
The clothing treatment device according to any one of claims 11-14, characterized in that the positioning structure comprises a number of positioning ribs formed by the inner peripheral wall of the inner end cap extending in the radial direction, an outer peripheral wall of the drum shaft inserted into the inner end cap is provided with a number of positioning grooves, and the positioning ribs are inserted into the positioning grooves;
preferably, the plurality of positioning ribs are distributed in a circle along the circumference of the water hole.
The clothing treatment device according to claim 15, characterized in that the positioning rib is square, a rear side of the positioning rib is affixed to a front side of the positioning groove, and a bottom side of the positioning rib is provided affixed to a bottom side of the positioning groove.
The clothing treatment device according to claim 16, characterized in that the inner peripheral wall of the inner end cap is provided with a number of connecting ribs extending in the axial direction, the connecting ribs being in the shape of a square, and a front side of the connecting rib extends along the radial direction to form the positioning rib.
The clothing treatment device according to claim 17, characterized in that the drum shaft on a rear side of the positioning groove is sandwiched between inner peripheral walls of a plurality of the connecting ribs, the inner peripheral walls of the connecting ribs being provided in apposition with an outer peripheral wall of the drum shaft on the rear side of the positioning groove.
The clothing treatment device according to claim 8, characterized in that a reinforcing rib is provided on a side of the connecting rib towards the inner end cap, and the reinforcing rib is integrally molded with the connecting rib and the inner peripheral wall of the inner end cap.
The clothing treatment device according to any one of claims 15-19, characterized in that a plurality of the positioning ribs are provided between the water hole and the plurality of positioning projections;
preferably, the positioning ribs are provided directly opposite the positioning projections.