A laundry treating apparatus

Abstract

The application discloses a clothes treating device. The clothes treating device comprises a drum, a drum bottom center of the drum is provided with an outer end cover, the drum bottom center is further provided with an inner end cover sleeved in the outer end cover, an inner peripheral wall of the outer end cover, an outer peripheral wall of the inner end cover and the drum bottom jointly form a chamber, the chamber is divided into a water inlet channel and a gas exchange channel which are independent of each other, the water inlet channel introduces external water into the drum, and the gas exchange channel is connected with the inside and outside of the drum. The chamber jointly formed by the inner peripheral wall of the outer end cover, the outer peripheral wall of the inner end cover and the drum bottom is divided into the water inlet channel and the gas exchange channel, the gas exchange channel is arranged close to the water inlet channel, the air pressure at the water inlet channel is consistent with the outside of the drum, and the phenomenon that the water inflow is affected by excessively large or small pressure at the water inlet of the non-porous drum is avoided.

Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, and more specifically, relates to a clothing processing device. Background Technology

[0002] In existing drum washing machines, the drum typically has a shell, with an outer drum inside to hold the washing water. Inside the outer drum is a inner drum to hold the laundry. A shaft is located at the bottom of the drum, and a motor is located on the back of the outer drum to drive the shaft and thus rotate the drum. However, current drum washing machines generally accumulate a large amount of dirt between the inner and outer drums. To avoid contaminating the washing water, the applicant previously proposed a perforated drum washing machine that combines the inner and outer drums into one, thus overcoming the problem of dirt accumulation between them.

[0003] Existing non-perforated drum washing machines have the following problems: because the drum integrates the functions of a rotating inner drum and a water-holding outer drum, it is impossible to supply water to it using the existing washing machine water inlet structure; at the same time, because the drum is enclosed, a ventilation structure needs to be added to the drum to ensure that the air pressure inside the drum is balanced with the outside air pressure. Therefore, how to set up a ventilation structure and a water inlet structure in a non-perforated drum washing machine, especially how to match the water inlet structure with the ventilation structure to ensure stable water pressure at the water inlet, has become an urgent technical problem to be solved.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a clothes processing device to achieve the purpose of integrating ventilation and water inlet structures on a non-porous drum washing machine; at the same time, another objective of the present invention is to provide a clothes processing device to achieve the purpose of adjusting the water inlet pressure of the non-porous drum and stabilizing the water inlet flow.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] The present invention provides a garment processing device, including a roller. An outer end cover is provided at the center of the bottom of the roller, and an inner end cover is also provided at the center of the bottom of the roller, which is fitted inside the outer end cover. The inner peripheral wall of the outer end cover, the outer peripheral wall of the inner end cover and the bottom of the roller together form a chamber. The chamber is divided into an independent water inlet channel and a ventilation channel. The water inlet channel introduces water from the outside into the roller, and the ventilation channel connects the inside and outside of the roller.

[0008] Furthermore, both the inner and outer end caps are groove-shaped structures with an opening on one side. The inner and outer end caps are fastened to the center of the bottom of the cylinder. The outer peripheral wall of the inner end cap is provided with a first protrusion. The first protrusion is connected to the inner peripheral wall of the outer end cap. The chamber behind the first protrusion forms a water inlet channel, and the chamber in front of the first protrusion forms a ventilation channel.

[0009] Furthermore, the inner peripheral wall of the outer end cap is provided with a second protrusion, and the rear side of the first protrusion abuts against the front side of the second protrusion.

[0010] Furthermore, the inner circumferential wall of the inner end cap and the bottom of the cylinder together form a cavity. A cylinder shaft is connected to the bottom of the cylinder. The end of the cylinder shaft passes through the center of the bottom of the cylinder, inserts into the cavity, and abuts against the inner circumferential wall of the inner end cap. The hollow interior of the cylinder shaft forms a first flow channel, which connects the water inlet channel and the external water inlet pipe.

[0011] Furthermore, a water passage hole is provided at the center of the inner end cover, and the first flow channel is connected to the water inlet flow channel through the water passage hole. A first annular sealing ring is provided at the water passage hole of the inner end cover, and the end of the cylinder shaft abuts against the first annular sealing ring.

[0012] Preferably, the inner and outer end caps, water passage holes, flow channels, and the first annular sealing ring are coaxially arranged with the roller.

[0013] Furthermore, the outer end cover is provided with several first through holes, each of which connects the inside of the drum to the water inlet channel;

[0014] Preferably, the outer end cap is provided with multiple rings of through holes, each ring of through holes including several first through holes arranged in a ring along the circumference, and the first through holes in two adjacent rings of through holes are staggered.

[0015] Furthermore, each of the first through holes in at least one ring of through hole units is connected to a strip-shaped second flow channel, which is provided on the outer end cap and extends from the first through hole to the open side of the outer end cap.

[0016] Preferably, the second flow channel has a groove-shaped structure with the opening facing upwards.

[0017] Furthermore, the outer end cover is provided with several second through holes, each of which connects the internal space of the drum with the ventilation channel. Several exhaust holes are provided on the bottom of the drum, each of which connects the ventilation channel with the outside of the drum.

[0018] Furthermore, the inner end cover is provided with a third through hole that communicates with the ventilation channel, and an exhaust hole is provided on the bottom of the cavity.

[0019] Preferably, the inner end cap has several grooves along its circumference on the open side, and each groove and the bottom of the cylinder together form a third through hole.

[0020] Furthermore, a second annular sealing ring is provided on the bottom of the cylinder, and the open side of the outer end cap abuts against the second annular sealing ring;

[0021] Preferably, the bottom of the cylinder is provided with a recess with an opening facing the outer end cap, and a second annular sealing ring is provided in the recess;

[0022] More preferably, the second annular sealing ring has a raised rib on the side facing the outer end cover;

[0023] More preferably, the second annular sealing ring is coaxially arranged with the roller.

[0024] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0025] By dividing the cavity formed by the inner circumferential wall of the outer end cover, the outer circumferential wall of the inner end cover, and the bottom of the cylinder into a water inlet channel and an air exchange channel, the air exchange channel is positioned close to the water inlet channel, so that the air pressure at the water inlet channel is consistent with that at the outside of the drum, thus avoiding the phenomenon that the pressure at the water inlet of the non-perforated drum is too high or too low, which would affect the water flow.

[0026] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the clothing processing device provided in an embodiment of the present invention;

[0029] Figure 2 This is an exploded view of the structure of the clothing processing device provided in an embodiment of the present invention;

[0030] Figure 3 This is a partial enlarged view of the clothing processing device provided in an embodiment of the present invention.

[0031] In the diagram: 1-Drum; 11-Bottom of the drum; 111-Exhaust hole; 112-Recess; 12-Drum shaft; 121-First flow channel; 2-Outer end cap; 21-Second boss; 22-Through hole unit; 221-First through hole; 23-Second flow channel; 24-Second through hole; 3-Inner end cap; 31-First boss; 32-Water passage hole; 33-Third through hole; 331-Groove; 4-Cavity; 41-Water inlet channel; 42-Ventilation channel; 5-Cavity; 6-First annular sealing ring; 7-Second annular sealing ring.

[0032] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] like Figure 1-3 As shown, the present invention provides a garment processing device, including a roller 1. An outer end cover 2 is provided at the center of the bottom 11 of the roller 1, and an inner end cover 3 is also provided at the center of the bottom 11, which is fitted inside the outer end cover. The inner peripheral wall of the outer end cover 2, the outer peripheral wall of the inner end cover 3 and the bottom 11 together form a chamber 4. The chamber 4 is divided into an independent water inlet channel 41 and a ventilation channel 42. The water inlet channel 41 introduces external water into the roller 1, and the ventilation channel 42 connects the inside and outside of the roller 1.

[0037] In an embodiment of the present invention, the clothing processing device includes a drum 1, which is a barrel-shaped structure without a normally open hole. When the clothing processing device executes the washing program, the drum 1 can independently hold washing water and rotate. The rotational force is used to tumble the clothes and water to achieve the effect of washing the clothes inside the drum 1. This avoids the problem that the washing water cross-flows inside and outside the drum 1 during the operation of the clothing processing device, causing the washing water to be contaminated by dirt and bacteria accumulated outside the drum, thus failing to thoroughly clean the clothes. The clothing processing device is a washing machine.

[0038] The water inlet channel 41 introduces water into the drum 1 of the washing machine, achieving the purpose of water entering the drum 1; at the same time, the ventilation channel 42 connects the inside and outside of the drum 1, so that when the clothes processing equipment is running, the drum 1, which constitutes a sealed container, exchanges gas with the outside through the ventilation channel 42, adjusts the air pressure inside the drum 1, and thus achieves the purpose of normal water intake and drainage operation of the clothes processing equipment.

[0039] Through the above configuration, the inner end cover 3 and the outer end cover 2 of the bottom 11 of the drum 1 are integrated to form the water inlet and air inlet structure of the non-perforated drum 1, which simplifies the equipment and reduces costs. At the same time, by integrating the water inlet channel 41 and the air exchange channel 42 on the two end covers, 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, thus avoiding the phenomenon that the pressure at the water inlet of the non-perforated drum 1 is too high or too low, which would affect the water flow.

[0040] The outer end cap 2 is located inside the drum 1. The outer end cap 2 is fastened to the side of the bottom 11 of the drum 1 facing inward. After the end cap is fastened, an inward protrusion structure is formed at the center of the bottom 11 of the drum 1. The above-mentioned protrusion structure can be used to lift and agitate the clothes in the drum 1, thereby improving the washing effect.

[0041] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, both the inner and outer end caps 2 are groove-shaped structures with one side open. The inner and outer end caps 2 are fastened to the center of the bottom of the cylinder 11. The outer peripheral wall of the inner end cap 3 is provided with a first protrusion 31. The first protrusion 31 is connected to the inner peripheral wall of the outer end cap 2. The chamber 4 behind the first protrusion 31 forms a water inlet channel 41, and the chamber 4 in front of the first protrusion 31 forms a ventilation channel 42.

[0042] In the embodiments of the present invention, the outer end cap 2 and the inner end cap 3 are groove-shaped structures with one side open. The inner end cap 3 is fastened to the center of the bottom of the cylinder 11, and the outer end cap 2 is fastened to the outside of the inner end cap 3 and fastened to the center of the bottom of the cylinder 11. The outer peripheral wall of the inner end cap 3, the inner peripheral wall of the outer end cap 2 and the bottom of the cylinder 11 form a 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. In order to divide the chamber 4 into a front chamber 4 and a rear chamber 4, the front chamber 4 serves as a ventilation channel 42 and the rear chamber 4 serves as a water inlet channel 41. A first protrusion 31 is provided on the outer peripheral wall of the inner end cap 3. The first protrusion 31 serves as a separator. By sealing the first protrusion 31 with the inner peripheral wall of the outer end cap 2 in a ring, the front chamber 4 and the rear chamber 4 are separated.

[0043] like Figure 3As shown, specifically, the inner peripheral wall of the outer end cover 2 is provided with a second protrusion 21, and the rear side of the first protrusion 31 abuts against the front side of the second protrusion 21; the first protrusion 31 and the second protrusion 21 abut against each other in the front-rear direction to achieve a sealed connection between the first protrusion 31 and the inner peripheral wall of the outer end cover 2. In order to ensure that the inner end cover 3 is stably set on the bottom of the cylinder 11, the rear side of the first protrusion 31 abuts against the front side of the second protrusion 21, and the outer end cover 2 clamps the inner end cover 3. In addition, it can achieve surface contact between the first protrusion 31 and the second protrusion 21, increasing the sealing performance between the first protrusion 31 and the second protrusion 21; the rear side of the first protrusion 31 and the front side of the second protrusion 21 are both horizontal surfaces extending radially.

[0044] The front and back sides mentioned here are relative to the front and back sides of roller 1. The front side of roller 1 is the side with the clothing loading port.

[0045] like Figure 3 As shown, in an embodiment of the present invention, the inner peripheral wall of the inner end cap 3 and the bottom of the cylinder 11 together form a cavity 5. A cylinder shaft 12 is connected to the bottom of the cylinder 11. The end of the cylinder shaft 12 passes through the center of the bottom of the cylinder 11, inserts into the cavity 5, and abuts against the inner peripheral wall of the inner end cap 3. The hollow interior of the cylinder shaft 12 forms a first flow channel 121, which connects the water inlet channel 41 and the external water inlet pipe.

[0046] In an embodiment of the present invention, the tub shaft 12 on the bottom 11 extends axially, the inner end cover 3 is a groove-shaped structure with one side open, the inner end cover 3 is fastened to the bottom 11, the inner peripheral wall of the inner end cover 3 and the bottom 11 form a cavity 5, the tub shaft 12 is inserted into the cavity 5 after passing through the bottom 11, and then the end of the tub shaft 12 abuts against the inner end cover 3, the first flow channel 121 inside the tub shaft 12 extends axially, the first flow channel 121 has a water inlet and a water outlet, the water inlet of the first flow channel 121 is connected to an external water inlet pipe, the external water inlet pipe is the water inlet pipe of the washing machine, and the water outlet of the first flow channel 121 is connected to the water inlet channel 41;

[0047] When water is introduced, the washing water enters the first flow channel 121 through the inlet, flows through the first flow channel 121, then enters the water inlet channel through the outlet of the first flow channel 121, and finally enters the drum 1 through the outlet of the water inlet channel, thus realizing water intake of the drum 1.

[0048] like Figure 2 and 3 As shown in the embodiment of the present invention, a water passage hole 32 is provided at the center of the inner end cover 3, the first flow channel 121 is connected to the water inlet flow channel through the water passage hole 32, the inner end cover 3 is provided with a first annular sealing ring 6 at the water passage hole 32, and the end of the cylinder shaft 12 abuts against the first annular sealing ring 6.

[0049] In the embodiments of the present invention, a water passage hole 32 is provided at the center of the inner end cover 3, the inner end cover 3 has a groove-shaped structure, the water passage hole 32 is located in the middle of the groove bottom of the inner end cover 3, the cross section of the inner end cover 3 along the axial direction is circular, and the inner end cover 3 is stepped along the axial direction.

[0050] A first annular sealing ring 6 is provided at the contact point between the cylindrical shaft 12 and the inner end cover 3. The first annular sealing ring 6 is circular, the water passage hole 32 is circular, the cylindrical shaft 12 is cylindrical, the inner diameter of the first annular sealing ring 6 is greater than or equal to the radial dimension of the water passage hole 32, and the inner diameter of the first annular sealing ring 6 is equal to the inner diameter of the end of the cylindrical shaft 12.

[0051] By providing a first annular sealing ring 6 at the contact point between the cylindrical shaft 12 and the inner end cover 3, water leakage between the cylindrical shaft 12 and the inner end cover 3 is prevented when water enters the drum 1 through the cylindrical shaft 12, thus reducing the efficiency of water entering the drum 1. Furthermore, it ensures the airtight independence of the air intake channel and the ventilation channel 42, preventing water from flowing into the ventilation channel 42 and gas from entering the air intake channel. Specifically, the inner and outer end covers 2, the water passage hole 32, the flow channel, and the first annular sealing ring 6 are coaxially arranged with the drum 1.

[0052] like Figure 2 and 3 As shown, in an embodiment of the present invention, the outer end cover 2 is provided with a plurality of first through holes 221, each of which connects the interior of the roller 1 to the water inlet channel 41.

[0053] In an embodiment of the present invention, the first through hole 221 on the outer end cover 2 allows the water inlet channel 41 to communicate with the inside of the drum 1. The washing water entering the water inlet channel 41 enters the drum 1 through the first through hole 221 on the outer end cover 2. The outer end cover 2 has a hemispherical structure. The arrangement of multiple through holes can increase the efficiency of water entering the drum 1.

[0054] Specifically, the outer end cap 2 is provided with a multi-ring through-hole unit 22. Each ring of through-hole unit 22 includes several first through holes 221 arranged in a ring along the circumference. The multi-ring through-hole unit 22 can improve the uniformity of water intake to the drum 1 and prevent washing water from entering the drum 1 through the relatively concentrated first through holes 221, which would cause the water intake to be obstructed. The first through holes 221 in two adjacent rings of through-hole unit 22 are arranged alternately. If the outer end cap 2 is provided with two rings of through-hole unit 22, the first through holes 221 in one ring of through-hole unit 22 are located between two adjacent through holes in another ring of through-hole unit 22, which improves the uniformity of the arrangement of the first through holes 221, improves the smoothness of water intake to the drum 1, and when the load in the drum 1 covers part of the first through holes 221, water can enter the drum 1 from other first through holes 221.

[0055] When water enters, if the load covers the first through hole 221, the water flow will be obstructed and backflow will occur in the water inlet channel. Since the water inlet channel 41 is part of the cavity formed by the inner peripheral wall of the outer end cover 2, the outer peripheral wall of the inner end cover 3 and the bottom of the cylinder 11, the water inlet channel 41 can be used as a buffer cavity. It is blocked by the sealing gasket to prevent backflow into the ventilation channel 42.

[0056] like Figure 2 As shown, in an embodiment of the present invention, each of the first through holes 221 in at least one ring of through hole units 22 is connected to a strip-shaped second flow channel 23. The second flow channel 23 is provided on the outer end cover 2 and extends from the first through hole 221 to the open side of the outer end cover 2.

[0057] In an embodiment of the present invention, a second flow channel 23 is connected to the first through hole 221. When the load covers part of the first through hole 221 of the outer end cover, since the second flow channel 23 is connected to the first through hole 221, the second flow channel 23 can guide the washing water from the second flow channel 221 into the drum 1. Specifically, the second flow channel 23 has a groove-shaped structure, and the opening of the groove-shaped second flow channel 23 faces upward.

[0058] like Figure 2 As shown in the embodiment of the present invention, the outer end cover 2 is also provided with a plurality of second through holes 24, each second through hole 24 connecting the internal space of the roller 1 with the ventilation channel 42, and a plurality of exhaust holes 111 are provided on the bottom of the cylinder 11, each exhaust hole 111 connecting the ventilation channel 42 with the outside of the roller 1.

[0059] In an embodiment of the present invention, the outer end cover 2 is further provided with a second through hole 24. The roller 1 is connected to the ventilation channel 42 through the second through hole 24. The ventilation channel 42 is connected to the outside of the roller 1 through the exhaust hole 111. During ventilation, the gas enters the ventilation channel 42 through the second through hole 24 and then enters the outside of the roller 1 through the exhaust hole 111.

[0060] Several second through holes 24 are located near the open side of the outer end cover 2, and several through holes are arranged in a circle around the circumference of the outer end cover 2 to improve the uniformity of exhaust from the roller 1.

[0061] like Figure 2 As shown, in an embodiment of the present invention, the inner end cap 3 is provided with a third through hole 33 communicating with the ventilation channel 42, and the bottom 11 of the cavity 5 is provided with an exhaust hole 111.

[0062] In the embodiments of the present invention, specifically, the exhaust port 111 is provided on the bottom 11 of the cylinder located in the cavity 5. Therefore, in order to realize the ventilation of the drum 1, the ventilation channel 42 is connected to the cavity 5 by providing a third through hole 33 on the inner end cover 3, so that the gas enters the cavity 5 from the ventilation channel 42 through the third through hole 33 and is discharged through the exhaust port 111; the exhaust port is specifically provided on the bottom flange of the cylinder.

[0063] When the machine overflows, the vent 111 serves as a drain hole. The washing water enters the ventilation channel 42 through the second through hole 24, then enters the cavity 5 through the third through hole 33, and finally enters the drain pump through the vent 111 on the bottom flange of the cylinder to drain the water and prevent danger from occurring.

[0064] The inner end cap 3 has several grooves 331 along its circumference on one open side. Each groove 331 and the bottom of the cylinder 11 together form a third through hole 33. The grooves 331 on the open side of the inner end cap 3 face the bottom of the cylinder 11. The grooves 331 have an opening that communicates with the ventilation channel 42 and an opening that communicates with the cavity 5. The inner circumferential wall of the groove and the bottom of the cylinder 11 form the inner circumferential wall of the third through hole 33. Several grooves are arranged in a circle along the circumference of the inner end cap 3.

[0065] like Figure 2 and 3 As shown in the embodiment of the present invention, a second annular sealing ring 7 is provided on the bottom of the cylinder 11, and the open side of the outer end cover 2 abuts against the second annular sealing ring 7.

[0066] In an embodiment of the present invention, a second annular sealing ring 7 is provided between the bottom of the drum 11 and the outer end cap 2 to increase the sealing between the bottom of the drum 11 and the outer end cap 2, increase the sealing of the ventilation channel 42, and achieve smooth ventilation in the ventilation channel 42; and because the clothes bring water with them during the washing process, it can prevent the washing water from flowing out along the gap between the bottom of the drum 11 and the outer end cap 2, thus avoiding water leakage.

[0067] Specifically, the bottom of the cylinder 11 is provided with a recess 112 with an opening facing the outer end cover 2. The second annular sealing ring 7 is provided in the recess 112. The recess 112 with an opening facing the outer end cover 2 plays a positioning role for the second annular sealing ring 7, reducing the probability of misalignment of the second annular sealing ring 7, and further increasing the sealing between the bottom of the cylinder 11 and the outer end cover 2.

[0068] The second annular sealing ring 7 has a raised rib on the side facing the outer end cover 2 to increase the sealing contact between the second annular sealing ring 7 and the outer end cover 2; several raised ribs are arranged in a circle around the circumference of the second annular sealing ring 7; the second annular sealing ring 7 is coaxially arranged with the roller 1.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A laundry treating apparatus comprising a drum, characterized by, The drum is a barrel-shaped structure without a normally open hole, and can independently hold washing water and rotate when the laundry treatment device performs a washing program; the center of the drum bottom is provided with an outer end cover, and the center of the drum bottom is also provided with an inner end cover sleeved in the outer end cover; the inner periphery wall of the outer end cover, the outer periphery wall of the inner end cover and the drum bottom jointly form a cavity, which is divided into a water inlet channel and a gas exchange channel which are independent of each other; the water inlet channel introduces external water into the drum, and the gas exchange channel connects the inside and outside of the drum. 2.The laundry treatment apparatus of claim 1, wherein The inner and outer end covers are both groove-shaped structures with one side open, and the inner and outer end covers are buckled at the center of the drum bottom; the outer periphery wall of the inner end cover is provided with a first boss, and the first boss is connected to the inner periphery wall of the outer end cover; the cavity behind the first boss constitutes the water inlet channel, and the cavity in front of the first boss constitutes the gas exchange channel. 3.The laundry treatment apparatus of claim 2, wherein The inner periphery wall of the outer end cover is provided with a second boss, and the outer periphery wall of the inner end cover in front of the first boss is attached to the inner periphery wall of the second boss; the back side of the first boss is in abutment with the front side of the second boss. 4.The laundry treatment apparatus of claim 2, wherein The inner periphery wall of the inner end cover and the drum bottom jointly enclose a cavity, and the drum bottom is connected with a drum shaft; the end of the drum shaft passes through the center of the drum bottom and is inserted into the cavity to abut against the inner periphery wall of the inner end cover; the inside of the drum shaft is hollow to form a first flow channel, and the first flow channel communicates with the water inlet channel and an external water inlet pipe. 5.The laundry treatment apparatus of claim 4, wherein The center of the inner end cover is provided with a water passing hole, and the first flow channel communicates with the water inlet channel through the water passing hole; the inner end cover is provided with a first annular sealing ring at the water passing hole; the end of the drum shaft abuts against the first annular sealing ring. The inner and outer end covers, the water passing hole, the flow channel and the first annular sealing ring are coaxially arranged with the drum. 6.The laundry treatment apparatus of claim 4, wherein The outer end cover is provided with a plurality of first through holes, and each first through hole communicates the inside of the drum with the water inlet channel; The outer end cover is provided with a plurality of through hole units, each through hole unit includes a plurality of first through holes arranged in a circle along the circumference, and the first through holes in adjacent two through hole units are staggered. 7.The laundry treatment apparatus of claim 6, wherein All the first through holes in at least one through hole unit are each communicated with a second flow channel in the shape of a strip, and the second flow channel is arranged on the outer end cover and extends from the first through hole to the side of the outer end cover which is open; The second flow channel is a groove-shaped structure, and the opening of the groove-shaped second flow channel faces upward.

8. The clothes treatment apparatus according to any one of claims 1 through 7, wherein The outer end cover is also provided with a plurality of second through holes, each of which communicates the inside space of the drum with the gas exchange channel; a plurality of exhaust holes are formed on the drum bottom, each of which communicates the gas exchange channel with the outside of the drum. 9.The laundry treatment apparatus of claim 8, wherein The inner end cover is provided with a third through hole which communicates with the gas exchange channel, and the drum bottom located in the cavity is provided with an exhaust hole; The open side of the inner end cover is provided with a plurality of grooves along the circumference, and each groove jointly encloses a third through hole with the drum bottom.

10. The clothes treating apparatus of any one of claims 1-7, wherein, The drum bottom is provided with a second annular sealing ring, and the open side of the outer end cover abuts against the second annular sealing ring. 11.The laundry treatment apparatus of claim 10, wherein The drum bottom is provided with a circle of recesses with openings facing the outer end cover, and the recesses are provided with a second annular sealing ring. 12.The laundry treating apparatus of claim 11, wherein, The side of the second annular sealing ring facing the outer end cover is provided with a protruding rib. 13.The laundry treatment apparatus of claim 11, wherein The second annular sealing ring is coaxially arranged with the drum.

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