drum washing machine

Abstract

The present invention belongs to the technical field of washing equipment and specifically provides a drum washing machine, comprising a fixing device, a washing drum, multiple first water pipes, an adapter, a drain pump, and an air leakage prevention device. The washing drum is provided with multiple water-passing structures, the first ends of the first water pipes are connected to corresponding water-passing structures, and the second ends of the first water pipes are connected to the drain pump via an adapter. The adapter is mounted on the fixing device, and the first water pipes and the portion of the adapter connected to the first water pipes can rotate with the washing drum. When the washing drum is rotating, the air leakage prevention device can maintain a connection between the water-passing structures and the corresponding first water pipes. When the washing drum is stationary, the air leakage prevention device can maintain a disconnection between the water-passing structures not immersed in water and the corresponding first water pipes. By eliminating the outer drum of the washing machine and retaining only the washing drum, only the interior of the washing drum needs to be cleaned. When the washing drum is rotating, the multiple first water pipes drain water simultaneously, and when the washing drum is stationary, water can also be drained smoothly.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing equipment, and specifically provides a drum washing machine. Background Art

[0002] Washing machine is a cleaning appliance that utilizes electric energy to generate mechanical action to wash clothes. Current washing machines mainly include pulsator washing machines and drum washing machines.

[0003] Existing drum washing machines primarily consist of a housing, an outer drum, an inner drum, and a drive mechanism. The inner drum is rotatably mounted within the outer drum, and the drive mechanism drives the inner drum. After a period of use, impurities can accumulate on the outer and inner walls of the inner and outer drums. In a closed, humid environment, these impurities can easily breed bacteria, potentially affecting the user's health. Therefore, regular cleaning of the washing machine is essential.

[0004] However, a drum washing machine requires professional after-sales personnel to perform a relatively thorough cleaning, and ordinary consumers cannot complete a good cleaning job. Since the drum washing machine is designed so that people cannot easily disassemble the inner and outer drums, it is impossible to thoroughly clean the inner and outer drums.

[0005] Patent publication number CN206266888U discloses a washing machine, comprising: a base, a washing tub, a driving member, a water inlet pipe and a drain pipe, wherein the washing tub is rotatably arranged on the base around a horizontal rotation center axis, and a washing chamber is defined in the washing tub; one end of the water inlet pipe extends into the washing chamber and the other end extends out of the washing chamber, and one end of the water inlet pipe is provided with an upwardly extending nozzle, the nozzle is a hollow tube with a closed upper end and a plurality of water spray holes are formed on the peripheral wall of the nozzle; one end of the drain pipe extends into the washing chamber and the other end extends out of the washing chamber, at least a portion of one end of the drain pipe extends in a vertical downward direction, and a plurality of water holes are formed at the lower end of the drain pipe; the output shaft of the driving member is relatively fixedly connected to the washing tub, and the driving member is used to drive the washing tub to rotate. That is to say, the patent discloses a drum washing machine without an outer drum. However, in order to achieve water supply and drainage, the washing machine extends the water inlet pipe and the drain pipe directly into the washing chamber. This arrangement has two very serious disadvantages. The first disadvantage is that it can easily cause water in the washing tub to leak, thereby causing a safety accident. Specifically, in order to extend the water pipe into the washing chamber, it is necessary to open a hole in the barrel wall of the washing tub to allow the water pipe to pass through. However, the water pipe is fixed, that is, the water pipe and the washing tub need to rotate relative to each other. Therefore, it is difficult to seal the gap between the water pipe and the hole. During the rotation of the washing tub, the water in the washing tub will flow out along the gap between the water pipe and the hole; the second disadvantage is that the clothes in the washing tub and the water pipe will collide with each other, making the clothes and the water pipe easily damaged.

[0006] Therefore, this field needs a new drum washing machine to solve the above problems. Summary of the Invention

[0007] To address the above-mentioned problems in the prior art, namely, to solve the problem that conventional drum washing machines are inconvenient to clean, the present invention provides a drum washing machine, comprising a housing, the drum washing machine further comprising: a fixing device disposed within the housing; a washing drum rotatably disposed within the fixing device for accommodating items to be washed and washing water, the washing drum being provided with a plurality of water-passing structures; a water supply and drainage device comprising a first water supply and drainage assembly, an adapter, and a drain pump, which are sequentially connected to each other, the first water supply and drainage assembly being connected to the washing drum, the adapter being mounted on the fixing device, the first water supply and drainage assembly and a portion of the adapter connected to the first water supply and drainage assembly being capable of rotating with the washing drum, the first water supply and drainage assembly comprising a plurality of first water pipes, the first ends of the plurality of first water pipes being connected to the corresponding water-passing structures, and the second ends of the plurality of first water supply pipes being connected to the drain pump via the adapter; and an air leakage prevention device, configured to maintain communication between the water-passing structures and the corresponding first water pipes when the washing drum is rotating, and to maintain disconnection between the water-passing structures, which are not immersed in water, and the corresponding first water pipes when the washing drum is stationary.

[0008] In the preferred technical solution of the above-mentioned drum washing machine, the air leakage prevention device includes a plurality of air leakage prevention units, and the air leakage prevention units include a first air leakage prevention component and a second air leakage prevention component. A connecting chamber and a accommodating chamber are formed in the first air leakage prevention component. One end of the connecting chamber is connected to the first water pipe, and the other end of the connecting chamber is connected to the water passage structure. The outer diameter of the second air leakage prevention component is larger than the inner diameter of the connecting chamber and / or the first water pipe, and when the washing drum is rotating, the second air leakage prevention component is always located in the accommodating chamber under the action of centrifugal force, so that the water passage structure remains connected with the corresponding connecting chamber and the first water pipe, and when the washing drum is in a stationary state, the second air leakage prevention component moves toward the first water pipe under the action of its own gravity to seal the first water pipe.

[0009] In the preferred technical solution of the above drum washing machine, the second air leakage preventing member is a spherical structure, the diameter of which is larger than the inner diameter of the first water pipe and smaller than the inner diameter of the communication chamber.

[0010] In the preferred technical solution of the above-mentioned drum washing machine, the second air leakage prevention component is a spherical structure, the inner diameter of the connecting chamber gradually increases from one end to the other end, and the diameter of the spherical structure is larger than the inner diameter of one end of the connecting chamber and smaller than the inner diameter of the other end of the connecting chamber.

[0011] In the preferred technical solution of the above-mentioned drum washing machine, the second anti-leakage component is a frustum structure, the outer diameter of the frustum structure close to one end of the first water pipe is smaller than the inner diameter of the first water pipe, and the outer diameter of the frustum structure away from one end of the first water pipe is larger than the inner diameter of the first water pipe.

[0012] In the preferred technical solution of the above-mentioned drum washing machine, the second air leakage prevention component is a frustum structure, the outer diameter of the frustum structure close to one end of the first water pipe is smaller than the inner diameter of the connecting chamber, and the outer diameter of the frustum structure away from one end of the first water pipe is larger than the inner diameter of the connecting chamber.

[0013] In the preferred technical solution of the above-mentioned drum washing machine, the water passage structure is a water opening formed at the junction of the rear wall and the inner wall of the washing drum.

[0014] In the preferred technical solution of the above-mentioned drum washing machine, the first water inlet and outlet assembly also includes a water collecting part, one end of the water collecting part is provided with multiple water diversion ports, and the other end of the water collecting part is provided with a central port, the multiple water diversion ports are all connected to the central port, the second end of the first water pipe is connected to the corresponding water diversion ports, and the central port is connected to the adapter.

[0015] In the preferred technical solution of the above-mentioned drum washing machine, the washing drum has a rotating shaft, a supporting structure is provided on the fixing device, the rotating shaft is rotatably connected to the supporting structure, a channel is provided in the rotating shaft, the supporting structure is a cylindrical structure, the adapter is installed on the cylindrical structure, and the water collecting component is installed on the rotating shaft.

[0016] In the preferred technical solution of the above-mentioned drum washing machine, the adapter is a rotating tee, which includes a rotating port and two fixed ports. The rotating port is connected to the first water inlet assembly, one of the two fixed ports is connected to the external water supply source, and the other of the two fixed ports is connected to the drain pump.

[0017] Those skilled in the art will appreciate that in the preferred technical solution of the present invention, the drum washing machine has no outer drum, but only a washing drum for accommodating items to be washed and washing water. Therefore, only the interior of the washing drum needs to be cleaned, which is very convenient. In addition, the water supply and drainage device includes a first water supply and drainage assembly, an adapter, and a drain pump that are connected in sequence. The first water supply and drainage assembly is connected to the washing drum, and the adapter is mounted on the fixing device. The first water supply and drainage assembly and the portion of the adapter connected to the first water supply and drainage assembly can rotate with the washing drum. The first water supply and drainage assembly includes a plurality of first water pipes, the first ends of the plurality of first water pipes are connected to corresponding water flow structures, and the second ends of the plurality of first water inlet pipes are connected to the drain pump via the adapter. Through such an arrangement, when the washing drum rotates, the first water pipes can rotate synchronously with the washing drum. The first water pipes are connected to the water flow structure provided on the washing drum. Compared with the washing machine disclosed in patent publication number CN206266888U, the first water pipe of the washing machine of the present invention does not need to extend into the interior of the washing drum, so that water leakage is prevented and the clothes in the washing drum do not collide with the water pipe. In addition, the washing machine of the present invention preferably includes an air leakage prevention device. When the washing machine is in a rotating state, for example, when the washing machine performs a dehydration program, the air leakage prevention device can keep the water-passing structure and the corresponding first water pipe in a connected state, that is, multiple water-passing structures and the corresponding first water pipes all remain in a connected state. In this way, water can be discharged through multiple first water pipes at the same time, thereby improving the drainage capacity of the washing machine; when the washing machine is in a stationary state, for example, between performing a washing program and a rinsing program, the water in the washing drum needs to be drained. At this time, all the water in the washing drum is located in the lower part of the washing drum, and only the water-passing structure located at the bottom of the multiple water-passing structures is immersed in water. The other water-passing structures are located at the upper part and are not immersed in water. In this case, the air leakage prevention device can keep the several water-passing structures located at the upper part and the corresponding first water pipes in an interrupted state. In this way, after starting the drain pump, these first water pipes can be prevented from leaking, thereby ensuring the smooth execution of the drainage program.

[0018] Furthermore, the air leakage prevention device includes a plurality of air leakage prevention units, each of which includes a first air leakage prevention member and a second air leakage prevention member. The first air leakage prevention member is formed with a communicating chamber and a accommodating chamber in communication with each other, one end of the communicating chamber is in communication with the first water pipe, and the other end of the communicating chamber is in communication with the water-passing structure. The outer diameter of the second air leakage prevention member is larger than the inner diameter of the communicating chamber and / or the first water pipe. When the washing drum is rotating, the second air leakage prevention member is always located in the accommodating chamber under the action of centrifugal force, so that the water-passing structure maintains a communication state with the corresponding communicating chamber and the first water pipe. When the washing drum is stationary, the second air leakage prevention member moves toward the first water pipe under the action of its own weight to seal the first water pipe. Through such a configuration, the air leakage prevention device can maintain or disconnect the water-passing structure from the corresponding first water pipe by virtue of the movement of the washing drum, thereby saving energy.

[0019] Furthermore, the second air leakage prevention member is a spherical structure, and the inner diameter of the communication chamber gradually increases from one end to the other end. The diameter of the spherical structure is larger than the inner diameter of the communication chamber at one end and smaller than the inner diameter of the communication chamber at the other end. This arrangement can improve the reliability of the air leakage prevention device.

[0020] Furthermore, the water passage structure is a water passage formed at the junction of the rear wall and the inner wall of the washing tub. By such an arrangement, it is helpful to drain the water in the washing tub.

[0021] Furthermore, the first water inlet and outlet assembly further includes a water collecting member, one end of which is provided with multiple water diversion ports, and the other end of which is provided with a central port, wherein the multiple water diversion ports are all connected to the central port, the second end of the first water pipe is connected to the corresponding water diversion port, and the central port is connected to the adapter. With this arrangement, water can be discharged simultaneously through the multiple first water pipes during drainage, and similarly, water can be supplied simultaneously through the multiple first water pipes during water supply, which can greatly improve the water supply and drainage capacity of the washing machine and reduce washing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 3 ;

[0026] Figure 4It is a structural schematic diagram of a fixing device for a drum washing machine of the present invention;

[0027] Figure 5 1 is a schematic structural diagram of a washing drum of a drum washing machine of the present invention;

[0028] Figure 6 1 is a schematic diagram of the assembly of the first water pipe and the water collecting member of the drum washing machine of the present invention;

[0029] Figure 7 1 is a schematic structural diagram of a water collecting member of a drum washing machine of the present invention;

[0030] Figure 8 1 is a schematic diagram of the assembly of the rotating shaft, the cylindrical structure and the adapter of the drum washing machine of the present invention;

[0031] Figure 9 2. It is a schematic structural diagram of the connecting member of the drum washing machine of the present invention;

[0032] Figure 10 This is a schematic diagram of the assembly of the washing drum and electromagnetic device of the drum washing machine of the present invention. Figure 1 ;

[0033] Figure 11 This is a schematic diagram of the assembly of the washing drum and electromagnetic device of the drum washing machine of the present invention. Figure 2 .

[0034] List of reference numerals:

[0035] 1. Washing box; 2. Washing drum; 21. Washing drum; 22. Rotating shaft; 23. Connecting member; 24. Bearing; 211. Clothes inlet; 212. Water outlet; 213. Water collecting ring; 214. Water guide groove; 215. Annular groove; 216. Limiting structure; 221. Channel; 231. Cylindrical body; 232. Connecting arm; 2321. Strip member; 2322. Reinforcement member; 31. Motor; 32. Belt; 33. Pulley; 41. Suspension spring; 42. Damper; 51 , main frame; 52, roller; 511, cylindrical structure; 512, crossbeam; 513, upper accommodating area; 514, lower accommodating area; 61, first water pipe; 62, water collecting part; 63, connecting pipe; 64, rotating tee; 65, water inlet pipe; 66, drain pipe; 67, drain pump; 621, water diversion port; 641, rotating port; 642, fixed port; 71, connecting chamber; 72, accommodating chamber; 73, spherical structure; 81, iron component; 82, electromagnetic component; 83, wire rope. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the following embodiments are merely used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0037] It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] First refer to Figures 1 to 3 ,in, Figure 1 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 3 .

[0040] like Figures 1 to 3 As shown, the drum washing machine of the present invention comprises a housing 1, in which a fixing device, a washing tub 2, a driving device, a water supply and drainage device and a vibration reduction device are arranged.

[0041] Continue reading Figures 1 to 3 The washing drum 2 is used to accommodate items to be washed and washing water. The front end of the washing drum 2 (from Figure 1 A clothing inlet 211 is formed at the left end of the washing drum 2 (seen from above), through which the user can put the clothes to be washed into the washing drum 2 and take the washed clothes out of the washing drum 2 through the clothing inlet 211.

[0042] Continue reading Figures 1 to 3 The washing drum 2 is rotatably arranged in the fixing device, and the driving device is connected to the rear end of the washing drum 2 (from Figure 1The washing machine is driven and connected to the washing drum 2 (the right end of the washing drum 2 as seen from above). When the washing machine is running, the driving device can drive the washing drum 2 to rotate. The rear end of the washing drum 2 has a rotating shaft 22, and the washing drum 2 is rotatably connected to the fixing device via the rotating shaft 22. For example, the driving device includes a motor 31, a belt 32, and a pulley 33. The pulley 33 is fixedly connected to the rotating shaft 22, and one end of the belt 32 is connected to the output shaft of the motor 31. The output shaft of the motor 31 is generally equipped with a small pulley. One end of the belt 32 is connected to the small pulley, and the other end of the belt 32 is connected to the pulley 33 installed on the rotating shaft 22. The motor 31 drives the pulley 33 and the rotating shaft 22 to rotate through the belt 32.

[0043] It should be noted that the driving device is not limited to the specific examples mentioned above. For example, a direct drive motor can also be used for driving. The stator device of the direct drive motor can be installed on the fixing device, and the rotor of the direct drive motor can be installed on the rotating shaft 22. Such adjustments and changes to the specific structural form of the driving device do not deviate from the principles and scope of the present invention and should be limited within the scope of protection of the present invention.

[0044] Continue reading Figures 1 to 3 The water supply and drainage device is connected to the rear end of the washing tub 2, and water can be supplied to the washing tub 2 or the water in the washing tub 2 can be drained through the water supply and drainage device.

[0045] Continue reading Figures 1 to 3 The vibration reduction device is provided between the fixing device and the housing 1. The vibration reduction device reduces vibrations and noises of the washing machine. The vibration reduction device includes a suspension spring 41 and a damper 42. The top of the fixing device is fixedly connected to the housing 1 via the suspension spring 41, and the bottom of the fixing device is fixedly connected to the housing 1 via the damper 42.

[0046] Continue reading Figures 1 to 3 , and then see Figure 4 , Figure 4 It is a structural schematic diagram of the fixing device of the drum washing machine of the present invention.

[0047] like Figures 1 to 4 As shown, the fixing device includes a main frame 51, the washing drum 2 is rotatably arranged in the main frame 51, and the rotating shaft 22 is connected to the rear end of the main frame 51 (from Figure 1 By installing the washing tub 2 in the main frame 51, a portion of the washing tub 2 can be extended to the outside of the main frame 51 (such as the right end of the main frame 51). Figure 2 and Figure 3 As shown), in this way, the size of the washing drum 2 can be expanded as much as possible, thereby increasing the washing capacity of the washing machine without changing the external dimensions.

[0048] Continue reading Figure 4A support structure is provided at the rear end of the main frame 51, and the rotating shaft 22 is rotatably connected to the support structure. The supporting structure is a cylindrical structure 511. The rotating shaft 22 can be inserted into the cylindrical structure 511, and the two are connected by a bearing so that the rotating shaft 22 can rotate relative to the cylindrical structure 511.

[0049] Continue reading Figure 2 and Figure 4 The fixing device further includes a plurality of rollers 52 disposed on the main frame 51. When fully installed, the plurality of rollers 52 abut against the outer wall of the washing tub 2. For example, the main frame 51 includes four crossbeams 512 arranged along the axial direction of the washing tub 2. Each crossbeam 512 is mounted with a roller 52, and the rollers 52 are disposed near the front end of the main frame 51. By providing the rollers 52 to support the front end of the washing tub 2, the pressure exerted by the rear end of the washing tub 2 on the rotating shaft 22 can be greatly reduced, thereby reducing the design difficulty and processing cost of the rotating shaft 22.

[0050] Continue reading Figure 4 The main frame 51 includes two accommodating areas, which are arranged in a vertical direction, and are recorded as an upper accommodating area 513 and a lower accommodating area 514, wherein the washing drum 2 is located in the upper accommodating area 513.

[0051] Next see Figure 5 , Figure 5 It is a schematic structural diagram of a washing drum of a drum washing machine of the present invention.

[0052] like Figure 5 As shown, a water flow structure is formed at the rear end of the washing drum 2, and the water inlet and outlet device is connected to the water flow structure. Through this water flow structure, water can be supplied into the washing drum 2 or the water in the washing drum 2 can be drained. Preferably, the water flow structure is a water flow opening 212 formed at the junction of the rear wall and the inner wall of the washing drum 2. By arranging the water flow opening 212 at the junction of the rear wall and the inner wall, it is more convenient to drain the water in the washing drum 2.

[0053] Continue reading Figure 5 A water collecting ring 213 is formed on the inner wall of the washing tub 2 and is connected to the water inlet 212. As can be seen from the figure, the water collecting ring 213 is a groove-like structure on the inner wall of the washing tub 2, convex outward along the radial direction of the washing tub 2, so that the bottom of the water collecting ring 213 is lower than the inner wall of the washing tub 2. In this way, the water in the washing tub 2 will gather in the water collecting ring 213, which is conducive to draining the water in the washing tub 2.

[0054] Continue reading Figure 5 A plurality of water guide structures are provided on the inner wall of the washing tub 2. The water guide structures extend along the axial direction of the washing tub 2, and the rear end of the water guide structures (from Figure 5The right end of the water guide structure (as seen from above) is connected to the water collection ring 213. Providing a water guide structure on the inner wall of the washing drum 2 facilitates the collection of water within the washing drum 2 toward the water collection ring 213. This is particularly true when the washing drum 2 is rotating, such as when the washing machine is performing a spin cycle. Water on the inner wall can quickly flow along the water guide structure toward the water collection ring 213, significantly improving the washing machine's spin cycle.

[0055] Continue reading Figure 5 The water-guiding structure is a water-guiding groove 214 formed on the inner wall of the washing tub 2. In other words, the water-guiding structure is a strip-shaped groove-like structure that protrudes outward along the radial direction of the washing tub 2 on the inner wall of the washing tub 2. Of course, multiple inwardly protruding strip-shaped ribs can also be formed on the inner wall of the washing tub 2 along the radial direction of the washing tub 2. In this way, a water-guiding structure can also be formed between two adjacent strip-shaped ribs. Preferably, the water-guiding groove 214 can be combined with the strip-shaped ribs, with the two structures arranged at intervals to further improve drainage efficiency.

[0056] Continue reading Figure 5 As can be seen from the figure, some water guide grooves 214 are longer, some are shorter, and the two different lengths of water guide grooves 214 are arranged at intervals, that is, the lengths of two adjacent water guide grooves 214 are different. Because the rear ends of the water guide grooves 214 need to be connected to the water collecting ring 213, the longer water guide groove 214 extends to the front end of the washing drum 2 longer than the shorter water guide groove 214, dividing the washing drum 2 into a front section, a middle section, and a rear section along the axial direction of the washing drum 2. Figure 5 It can be seen that the water guide grooves 214 located at the front section of the washing drum 2 are relatively sparse, and the water guide grooves 214 located at the middle section and the rear section of the washing drum 2 are relatively dense. By using such water guide grooves 214 of different lengths, the processing cost can be reduced as much as possible while ensuring that the drainage needs of the washing machine are met.

[0057] Continue reading Figure 5 The inner diameter of the front end of the washing tub 2 is smaller than the inner diameter of the rear end of the washing tub 2. By such an arrangement, it is more conducive to the water in the washing tub 2 flowing toward the water inlet 212.

[0058] Continue reading Figure 5 The washing drum 2 has a drum door (not shown). The front end of the washing drum 2 is provided with an outwardly protruding fixed structure, and the drum door (not shown) is mounted on the fixed structure. The fixed structure is an annular groove 215 formed on the washing drum 2, and the drum door is fixedly engaged with the annular groove 215.

[0059] Continue reading Figures 1 to 5 , and then see Figures 6 to 8,in, Figure 6 1 is a schematic diagram of the assembly of the first water pipe and the water collecting member of the drum washing machine of the present invention; Figure 7 1 is a schematic structural diagram of a water collecting member of a drum washing machine of the present invention; Figure 8 It is a schematic diagram of the assembly of the rotating shaft, the cylindrical structure and the adapter of the drum washing machine of the present invention.

[0060] like Figure 1 、 Figure 3 、 Figure 6 and Figure 8 As shown, the water inlet and outlet device includes a first water inlet and outlet assembly, an adapter, and a second water inlet and outlet assembly which are connected in sequence, wherein the first water inlet and outlet assembly is connected to a water inlet 212 formed at the rear end of the washing tub 2, that is, the first water inlet and outlet assembly does not need to extend into the interior of the washing tub 2, and the second water inlet and outlet assembly is connected to the outside world, and the adapter is installed on a tubular structure 511 arranged at the rear end of the fixing device.

[0061] When the washing tub 2 rotates, the first water inlet and drain assembly and the portion of the adapter connected to the first water inlet and drain assembly can rotate with the washing tub 2, and the second water inlet and drain assembly and the portion of the adapter connected to the second water inlet and drain assembly are fixed.

[0062] That is to say, the water inlet and outlet device includes three core structures, namely, a first water inlet and outlet assembly connected to the washing drum 2, a second water inlet and outlet assembly connected to the outside world, and an adapter for connecting the first water inlet and outlet assembly and the second water inlet and outlet assembly. The key to the three core structures lies in the adapter. Specifically, the adapter itself includes two parts, the first part is connected to the first water inlet and outlet assembly, and the second part is connected to the second water inlet and outlet assembly. The two parts of the adapter can rotate relative to each other, and the second part is installed on the fixing device. In this way, when the washing drum 2 rotates, the first water inlet and outlet assembly and the first part of the adapter can rotate with the washing drum 2. The second water inlet and outlet assembly is connected to the outside world and needs to remain fixed.

[0063] Continue reading Figure 1 、 Figure 3 and Figure 8 The adapter is preferably configured as a rotating tee 64, which includes a rotating port 641 and a fixed port 642, wherein the rotating port 641 is connected to the first water inlet and outlet assembly and can rotate with the first water inlet and outlet assembly. There are two fixed ports 642, and the second water inlet and outlet assembly includes an inlet pipe 65 and a drain pipe 66. One of the two fixed ports 642 is a water inlet, which is connected to the water inlet pipe 65, and the other end of the water inlet pipe 65 is connected to an external water supply source. The other fixed port 642 is a water outlet, which is connected to the drain pipe 66, and the other end of the drain pipe 66 is connected to a drainage pump 67.

[0064] Continue reading Figures 5 to 8The first water inlet and outlet assembly includes a first water pipe 61, a water collecting member 62, and a connecting pipe 63 that are connected in sequence, wherein the number of first water pipes 61 can be multiple. For example, the number of first water pipes 61 is three, and accordingly, the number of water outlets is also three. The three water outlets 212 are arranged along the circumference of the washing tub 2. The first end of the first water pipe 61 is connected to the corresponding water outlet 212. One end of the water collecting member 62 is provided with a water diversion port 621, and the number of water diversion ports 621 is three. The second end of the first water pipe 61 is connected to the corresponding water diversion port 621. The other end of the water collecting member 62 is provided with a central port (not shown in the figure). The multiple water diversion ports 621 are all connected to the central port. The central port of the water collecting member 62 is then connected to the rotating port 641 of the rotating tee 64 through the connecting pipe 63. In this way, the three first water pipes 61 are connected to the rotating tee 64 through the water collecting member 62 and the connecting pipe 63.

[0065] The three first water pipes 61 are connected through the water collecting part 62. When draining, the water can be drained through the three first water pipes 61 at the same time. Similarly, when filling water, the water can be filled through the three first water pipes 61 at the same time. Through such an arrangement, the water filling and drainage capacity of the washing machine can be greatly improved and the washing time can be reduced.

[0066] It should be noted that, in actual applications, those skilled in the art can cancel the connection pipe 63 as needed and directly connect the water collecting part 62 with the rotating tee 64. Such flexible adjustment and change does not deviate from the principle and scope of the present invention and should be limited within the scope of protection of the present invention.

[0067] Continue reading Figure 8 A channel 221 is provided in the rotating shaft 22, and the first water inlet and outlet assembly is connected to the rotating tee 64 via the channel 221 and the cylindrical structure 511. The inner diameter of the channel 221 can be larger than the outer diameter of the cylindrical structure 511. In this case, during installation, the cylindrical structure 511 can be inserted into the channel 221 of the rotating shaft 22; conversely, the inner diameter of the cylindrical structure 511 can be larger than the outer diameter of the rotating shaft 22. In this case, during installation, the rotating shaft 22 can be inserted into the cylindrical structure 511. Preferably, the inner diameter of the channel 221 is larger than the outer diameter of the cylindrical structure 511. During installation, the cylindrical structure 511 is inserted into the channel 221 of the rotating shaft 22. The two are connected by a bearing 24 so that they can rotate relative to each other.

[0068] Continue reading Figure 5 and Figure 8 , and then see Figure 9 , Figure 9 It is a structural schematic diagram of the connecting components of the drum washing machine of the present invention.

[0069] like Figure 5 、 Figure 8 and Figure 9As shown, the washing drum 2 includes a drum body 21, a rotating shaft 22 and a connecting member 23, wherein the drum body 21 is used to accommodate items to be washed and washing water, a clothing inlet 211, a water outlet 212, a water collecting ring 213, a water guide groove 214 and an annular groove 215 are all formed on the drum body 21, and one end of the connecting member 23 is connected to the rear end of the drum body 21 (from Figure 5 The other end of the connecting member 23 is connected to the rotating shaft 22. In other words, the rotating shaft 22 is fixedly connected to the cylindrical body 21 through the connecting member 23. When the driving device drives the rotating shaft 22 to rotate, the rotating shaft 22 drives the cylindrical body 21 to rotate synchronously through the connecting member 23.

[0070] The connecting member 23 includes a connected cylindrical body 231 and a connecting arm 232, wherein the number of the connecting arms 232 is multiple, exemplarily, the number of the connecting arms 232 is three, and the three connecting arms 232 are arranged along the circumference of the cylindrical body 231, preferably evenly arranged along the circumference of the cylindrical body 231. The connecting arms 232 and the cylindrical body 231 can be fixedly connected or integrally arranged. During installation, the rotating shaft 22 can be inserted into the cylindrical body 231, and the two can adopt an interference fit or a clearance fit. If a clearance fit is adopted, the rotating shaft 22 and the cylindrical body 231 can be circumferentially fixed by a key. Exemplarily, a first keyway is formed on the inner wall of the cylindrical body 231, and a second keyway is formed on the outer wall of the rotating shaft 22. The first keyway and the second keyway are circumferentially fixed by the key. Of course, the rotating shaft 22 and the cylindrical body 231 preferably adopt an interference fit to improve the stability of the connection between the two.

[0071] Continue reading Figure 5 、 Figure 8 and Figure 9 When installed, the connecting arm 232 is fixedly connected to the rear end of the cylinder 21, the rotating shaft 22 is fixedly connected to the cylindrical body 231 of the connecting member 23, and there is a certain gap between the end of the rotating shaft 22 and the rear end of the cylinder 21. The second end of the first water pipe 61 can enter the channel 221 of the rotating shaft 22 through the gap.

[0072] Specifically, when installed, the water collecting part 62 can be fixed on the cylindrical body 231 of the connecting member 23, so that the water collecting part 62 is located in the gap between the rotating shaft 22 and the cylindrical body 21, and the water diversion port 621 of the water collecting part 62 is facing the cylindrical body 21, and the central port of the water collecting part 62 is facing the channel 221 of the rotating shaft 22. In this way, the second end of the first water pipe 61 can be directly connected to the corresponding water diversion port 621, the connecting pipe 63 is located inside the channel 221 and the cylindrical structure 511, the central port of the water collecting part 62 is connected to the left end of the connecting pipe 63, the rotating tee 64 is fixed on the cylindrical structure 511, and the rotating port 641 of the rotating tee 64 is extended into the cylindrical structure 511, and the right end of the connecting pipe 63 is connected to the rotating port 641. The rotating port 641 of the rotating tee 64, the connecting pipe 63, the water collecting part 62 and the first water pipe 61 can rotate synchronously with the cylindrical body 21. Of course, the water collecting member 62 may also be fixedly connected to the rotating shaft 22 and installed in the channel 221 of the rotating shaft 22 .

[0073] The three first water pipes 61 can simultaneously take in water and drain water. During drainage, in order to prevent air leakage, the washing tub 2 can be kept rotating. Under the action of centripetal force, the washing water is evenly distributed along the water collecting ring 213, so that all three water inlets 212 are immersed in water, thereby improving the drainage capacity of the washing machine and reducing the washing time.

[0074] Continue reading Figure 9 The three connecting arms 232 have the same structure. For example, one of the connecting arms 232 includes a strip 2321 and a reinforcement 2322. There are two strips 2321, spaced apart, and fixedly connected or integrally formed with the cylindrical body 231. There are multiple reinforcements 2322, exemplarily two, with each end of the reinforcement 2322 fixedly connected or integrally formed with the two strips 2321. When properly installed, the first water pipe 61 can be positioned in the gap between the two strips 2321 and fixedly connected to the reinforcement 2322, thereby preventing movement.

[0075] Preferably, the drum washing machine of the present invention also includes an air leakage prevention device. When the washing drum 2 is in a rotating state, the air leakage prevention device can keep the water outlet 212 and the corresponding first water pipe 61 in a connected state. When the washing drum 2 is in a stationary state, the air leakage prevention device can keep the water outlet 212 that is not immersed in water and the corresponding first water pipe 61 in an interrupted state.

[0076] When the washing machine is in a rotating state, for example, when the washing machine is performing a dehydration program, the anti-leakage device can keep the water port 212 connected to the corresponding first water pipe 61, that is, the three water ports 212 and the corresponding first water pipes 61 are all connected. In this way, water can be discharged through the three first water pipes 61 at the same time, thereby improving the drainage capacity of the washing machine.

[0077] When the washing machine is in a stationary state, for example, between executing the washing program and the rinsing program, the water in the washing drum 2 needs to be drained. At this time, all the water in the washing drum 2 is located in the lower part of the washing drum 2, and only the water opening 212 at the bottom of the three water openings 212 is immersed in water. The other two water openings 212 are located at the upper part and are not immersed in water. In this case, the anti-leakage device can keep the two water openings 212 located at the upper part (that is, the water openings 212 not immersed in water) and the corresponding first water pipes 61 in an interrupted state. In this way, after starting the drain pump 67, the two first water pipes 61 can be prevented from leaking, thereby ensuring the smooth execution of the drainage program.

[0078] Among them, the anti-leakage device can be three solenoid valves, which are respectively arranged at the corresponding water outlet 212. When the washing machine is in a rotating state, the three solenoid valves are in an on state to keep the water outlet 212 and the corresponding first water pipe 61 connected. When the washing machine is in a stationary state, the solenoid valve at the water outlet 212 that is not immersed in water can be closed to keep the water outlet 212 and the corresponding first water pipe 61 in an interrupted state.

[0079] Of course, the anti-leakage device can also be set to other structural forms. Figure 5 A preferred embodiment of the air leakage prevention device will be described in detail.

[0080] like Figure 5 As shown, the anti-leakage device includes multiple anti-leakage units. Exemplarily, the anti-leakage device includes three anti-leakage units. The structures of the three anti-leakage units can be the same or different. Of course, it is preferred to set the three anti-leakage units to have the same structure.

[0081] The air leakage prevention unit includes two air leakage prevention components that cooperate with each other, which are recorded as the first air leakage prevention component and the second air leakage prevention component. A chamber is formed in the first air leakage prevention component, and the second air leakage prevention component is located in the chamber. The top of the chamber is connected to the first water pipe 61, and the middle position near the chamber is connected to the water outlet 212. This section of the chamber is recorded as the connecting chamber 71, which is used to connect the first water pipe 61 and the water outlet 212. The chamber at one end below the connecting chamber 71 is recorded as the accommodating chamber 72. The second air leakage prevention component is generally located in the accommodating chamber 72. The second air leakage prevention component is a spherical structure 73. The outer diameter of the spherical structure 73 is larger than the inner diameter of the first water pipe 61 and smaller than the inner diameter of the connecting chamber 71.

[0082] When the washing tub 2 rotates, the spherical structure 73 is always located in the accommodating chamber 72 under the action of centrifugal force. In this case, the water outlet 212 remains in communication with the corresponding communicating chamber 71 and the first water pipe 61 .

[0083] When the washing tub 2 stops rotating, two air leakage prevention units are located at the upper portion, and one air leakage prevention unit is located at the bottom end.

[0084] The spherical structure 73 of the anti-leakage unit at the bottom is located in the accommodating chamber 72 under the action of its own gravity. The water outlet 212 at the bottom (the water outlet 212 is immersed in water) and the corresponding connecting chamber 71 and the first water pipe 61 remain connected, allowing drainage.

[0085] The spherical structure 73 of the upper anti-leakage unit moves toward the first water pipe 61 under the action of its own gravity. Since the outer diameter of the spherical structure 73 is larger than the inner diameter of the first water pipe 61, the first water pipe 61 can be sealed. In particular, when the drain pump 67 is started, the spherical structure 73 can more tightly seal the first water pipe 61 under the suction force of the drain pump 67 to prevent air leakage from the first water pipe 61. Of course, the outer diameter of the spherical structure 73 can also be made larger than the inner diameter of the communication chamber 71. In this way, the spherical structure 73 can directly seal the communication chamber 71, that is, indirectly seal the first water pipe 61, and also prevent air leakage from the first water pipe 61.

[0086] It should be noted that the anti-leakage device can include only two anti-leakage units, one of the three water outlets 212 is main and two are auxiliary. No anti-leakage unit is set at the main water outlet 212, and anti-leakage units are set only at the other two water outlets 212. When the washing drum 2 stops rotating, the main water outlet 212 is located at the bottom for drainage, and the other two water outlets 212 are sealed accordingly by the anti-leakage units.

[0087] In another preferred embodiment, the second air leakage prevention component is still a spherical structure 73, but the connecting chamber 71 is set as a frustum-shaped chamber, that is, the inner diameter of the connecting chamber 71 gradually increases from one end to the other end, the end with a smaller inner diameter is recorded as the first end, and the end with a larger inner diameter is recorded as the second end. The first end is connected to the first water pipe 61, and the diameter of the spherical structure 73 is larger than the inner diameter of the first end but smaller than the inner diameter of the second end. When the spherical structure 73 moves toward the first water pipe 61, since the inner diameter of the connecting chamber 71 gradually decreases, the spherical structure 73 stays in the middle position of the connecting chamber 71, indirectly sealing the first water pipe 61.

[0088] In another preferred embodiment, the second air leakage preventing component is set as a frustum structure, that is, the outer diameter of the second air leakage preventing component gradually increases from one end to the other end, the end with a smaller outer diameter is recorded as the first end, and the end with a larger outer diameter is recorded as the second end, and the first end is directed toward the first water pipe 61, the outer diameter of the first end is smaller than the inner diameter of the first water pipe 61, and the outer diameter of the second end is larger than the inner diameter of the first water pipe 61. When the frustum structure moves toward the first water pipe 61, the first end will extend into the first water pipe 61, and the second end will stay outside the first water pipe 61, thereby sealing the first water pipe 61.

[0089] In another preferred embodiment, the second air leakage preventing component is also configured as a frustum structure, and the outer diameter of the second air leakage preventing component gradually increases from one end to the other end, the end with a smaller outer diameter is recorded as the first end, and the end with a larger outer diameter is recorded as the second end, and the first end is directed toward the first water pipe 61, the outer diameter of the first end is smaller than the inner diameter of the connecting chamber 71, and the outer diameter of the second end is larger than the inner diameter of the connecting chamber 71. When the frustum structure moves toward the first water pipe 61, the first end will extend into the connecting chamber 71, and the second end will stay outside the connecting chamber 71, thereby sealing the connecting chamber 71 and indirectly sealing the first water pipe 61.

[0090] Next see Figure 10 and Figure 11 ,in, Figure 10 Schematic diagram of the assembly of the washing drum and electromagnetic device of the drum washing machine of the present invention Figure 1 ; Figure 11 Schematic diagram of the assembly of the washing drum and electromagnetic device of the drum washing machine of the present invention Figure 2 .

[0091] like Figure 10 and Figure 11 As shown, the drum washing machine of the present invention also includes an electromagnetic device, which includes an iron component 81 and an electromagnetic component 82, wherein the iron component 81 is arranged on the washing drum 2. For example, the iron component 81 can be fastened to the washing drum 2 by a steel wire rope 83, and the electromagnetic component 82 is arranged on a fixing device. The iron component 81 and the electromagnetic component 82 cooperate with each other to stop the washing drum 2 from rotating and stop it at a set position.

[0092] During the rotation of the washing drum 2, the electromagnetic component 82 is in a power-off state. When the washing drum 2 needs to stop rotating, the electromagnetic component 82 is energized, and an attractive force is generated between the electromagnetic component 82 and the iron component 81. This attractive force is a resistance relative to the washing drum 2. Under the obstruction of this attractive force, the washing drum 2 slowly stops rotating and eventually stops.

[0093] In addition, the washing drum 2 can be stopped at a set position by an electromagnetic device. For example, the iron component 81 can be set at a position corresponding to the water outlet 212, and the electromagnetic component 82 can be set directly below the washing drum 2. When the washing drum 2 stops rotating, the water outlet 212 corresponding to the iron component 81 is located at the bottom, which is convenient for drainage.

[0094] That is to say, the electromagnetic device can play the role of both braking and positioning. Among them, the electromagnetic component 82 is fixed to the lower receiving area 514 of the main frame 51 (see Figure 4 ), that is, the electromagnetic component 82 and the washing tub 2 are both installed on the main frame 51. In this way, the distance between the iron component 81 installed on the washing tub 2 and the electromagnetic component 82 is relatively fixed, which is beneficial to improving the stability of the electromagnetic device.

[0095] Continue reading Figure 11 The corresponding surfaces of the iron member 81 and the electromagnetic member 82 are both configured as curved surfaces. This configuration improves the positioning accuracy of the electromagnetic device. The surface of the iron member 81 facing the washing tub 2 is also configured as a curved surface, which conforms to the outer wall of the washing tub 2. This improves the stability of the connection between the iron member 81 and the washing tub 2. An anti-slip member, such as a rubber pad, can also be provided between the iron member 81 and the washing tub 2 to prevent relative movement between the iron member 81 and the washing tub 2.

[0096] Continue reading Figure 10 and Figure 11 The washing drum 2 is provided with a limiting structure 216, which prevents the iron member 81 from moving toward the front end of the washing drum 2. The washing drum 2 is a frustum with a small front end. The limiting structure 216 prevents the iron member 81 from sliding toward the front end of the washing drum 2. The limiting structure 216 is a raised structure formed on the washing drum 2.

[0097] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A drum washing machine, comprising a housing, characterized in that: The drum washing machine further comprises: a fixing device, which is disposed in the box; A washing drum rotatably disposed in the fixing device for accommodating items to be washed and washing water, wherein the washing drum is provided with a plurality of water-passing structures; a water inlet and outlet device, comprising a first water inlet and outlet assembly, an adapter, and a drain pump connected in sequence, wherein the first water inlet and outlet assembly is connected to the washing tub, the adapter is mounted on the fixing device, the first water inlet and outlet assembly and the portion of the adapter connected to the first water inlet and outlet assembly are capable of rotating with the washing tub, the first water inlet and outlet assembly comprising a plurality of first water pipes, the first ends of the plurality of first water pipes being connected to the corresponding water-passing structures, and the second ends of the plurality of first water pipes being connected to the drain pump via the adapter; and The air leakage prevention device is configured to keep the water-passing structure and the corresponding first water pipe connected when the washing drum is in a rotating state, and to keep the water-passing structure that is not immersed in water and the corresponding first water pipe disconnected when the washing drum is in a stationary state.

2. The drum washing machine according to claim 1, characterized in that: The air leakage prevention device includes a plurality of air leakage prevention units, each of which includes a first air leakage prevention component and a second air leakage prevention component. The first air leakage prevention component is formed with a communicating chamber and a accommodating chamber connected to each other. One end of the communicating chamber is connected to the first water pipe, and the other end of the communicating chamber is connected to the water flow structure. The outer diameter of the second air leakage prevention component is larger than the inner diameter of the communicating chamber and / or the first water pipe, and When the washing drum is rotating, the second air leakage preventing member is always located in the accommodating chamber under the action of centrifugal force, so that the water-passing structure maintains a communication state with the corresponding communicating chamber and the first water pipe, and When the washing tub is in a stationary state, the second air leakage preventing member moves toward the first water pipe under the action of its own weight to seal the first water pipe.

3. The drum washing machine according to claim 2, characterized in that: The second air leakage preventing member is a spherical structure, and the diameter of the spherical structure is larger than the inner diameter of the first water pipe and smaller than the inner diameter of the communication chamber.

4. The drum washing machine according to claim 2, characterized in that: The second air leakage preventing member is a spherical structure. The inner diameter of the communication chamber gradually increases from one end to the other end. The diameter of the spherical structure is larger than the inner diameter of one end of the communication chamber and smaller than the inner diameter of the other end of the communication chamber.

5. The drum washing machine according to claim 2, characterized in that: The second anti-leakage component is a frustum structure, the outer diameter of the frustum structure close to the first water pipe is smaller than the inner diameter of the first water pipe, and the outer diameter of the frustum structure away from the first water pipe is larger than the inner diameter of the first water pipe.

6. The drum washing machine according to claim 2, characterized in that: The second air leakage prevention component is a frustum structure, the outer diameter of the frustum structure close to the first water pipe is smaller than the inner diameter of the connecting chamber, and the outer diameter of the frustum structure away from the first water pipe is larger than the inner diameter of the connecting chamber.

7. The drum washing machine according to claim 6, characterized in that: The water-passing structure is a water-passing port formed at the junction of the rear wall and the inner wall of the washing tub.

8. The drum washing machine according to claim 1, characterized in that: The first water inlet and outlet assembly also includes a water collecting part, one end of the water collecting part is provided with multiple water diversion ports, and the other end of the water collecting part is provided with a central port, the multiple water diversion ports are all connected to the central port, the second end of the first water pipe is connected to the corresponding water diversion ports, and the central port is connected to the adapter.

9. The drum washing machine according to claim 8, characterized in that: The washing drum has a rotating shaft, a supporting structure is provided on the fixing device, the rotating shaft is rotatably connected to the supporting structure, a channel is provided in the rotating shaft, the supporting structure is a cylindrical structure, the adapter is installed on the cylindrical structure, and the water collecting component is installed on the rotating shaft.

10. The drum washing machine according to any one of claims 1 to 9, characterized in that: The adapter is a rotating tee, which includes a rotating port and two fixed ports. The rotating port is connected to the first water pipe, one of the two fixed ports is connected to the external water supply source, and the other of the two fixed ports is connected to the drainage pump.

Images