Drum drying method of drum washing machine

Abstract

The present invention belongs to the technical field of washing equipment, and specifically provides a drum drying method for a drum washing machine, the washing machine comprising: a fixing device; a metal drum rotatably arranged in the fixing device, the first end of the metal drum being formed with a clothing loading port; a connected water inlet and outlet assembly and a drainage pump, the first end of the water inlet and outlet assembly being connected to the second end of the metal drum; an electromagnetic heating device capable of heating the metal drum; the drum drying method comprising: after the washing water in the metal drum is drained, causing the electromagnetic heating device to heat the metal drum; and causing the drainage pump to start to discharge the water vapor in the metal drum. By eliminating the outer drum of the washing machine and retaining only one metal drum, only the interior of the metal drum needs to be cleaned; after the washing water is drained, the metal drum is heated by the electromagnetic heating device, which can evaporate the residual water in the metal drum to avoid the generation of bacteria in the drum, and starting the drainage pump to discharge the water vapor to prevent the water vapor from re-condensing into water after the metal drum cools down.

Description

Technical Field

[0001] The invention belongs to the technical field of washing equipment, and specifically provides a drum drying method for 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] The patent with publication number CN206266882U discloses a washing machine, comprising: a base, a washing tub, a driving member, a door body, a locking device, a water inlet pipe and a drain pipe, the washing tub being rotatably arranged on the base around a horizontal rotation center axis; a clothing access opening connected to a washing chamber is formed on the peripheral wall of the washing tub, one end of the door body is pivotally arranged on the peripheral wall of the washing tub, and the door body is used to open and close the clothing access opening; one end of the water inlet pipe extends into the washing chamber and the other end extends out of the washing chamber, 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. That is to say, the patent discloses a drum washing machine without an outer drum, but the clothing loading and unloading port of the washing machine is arranged on the peripheral wall of the washing drum. This arrangement has three very serious disadvantages. The first disadvantage is that in order to smoothly open the door body located on the washing drum, the washing drum needs to be positioned very accurately. Therefore, a precise positioning device needs to be provided on the washing machine, which increases the cost of the washing machine. In addition, even if the positioning device is installed, it is easy for the door body to be unable to be aligned, resulting in the door body being unable to be opened smoothly, affecting the user's experience; the second disadvantage is that most of the current drum washing machines are placed in an embedded manner, but if the door body is set on the top of the washing machine, the washing machine cannot be placed in an embedded manner; third, current users are not accustomed to this top-opening drum washing machine, and most users are still accustomed to using front-opening drum washing machines. Therefore, this type of washing machine is not mainstream in the market and its sales prospects are not ideal.

[0006] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0007] In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the existing drum washing machine is inconvenient to clean, the present invention provides a drum drying method for a drum washing machine, the drum washing machine includes a housing, and the drum washing machine also includes: a fixing device, which is arranged in the housing; a metal drum, which is rotatably arranged in the fixing device for accommodating items to be washed and washing water, and a clothing inlet is formed at the first end of the metal drum; an inlet and outlet device, which includes an inlet and outlet assembly and a drain pump, the first end of the inlet and outlet assembly is connected to the second end of the metal drum, and the second end of the inlet and outlet assembly is connected to the drain pump; and an electromagnetic heating device, which is arranged on the fixing device, and the electromagnetic heating device can heat the metal drum; the drum drying method includes: after the washing water in the metal drum is drained, causing the electromagnetic heating device to heat the metal drum; and starting the drain pump to discharge the water vapor in the metal drum.

[0008] In the preferred technical solution of the above-mentioned drum drying method, the drum drying method further includes: obtaining the humidity value of the gas at the outlet of the drainage pump; comparing the humidity value with a first preset value; and selectively stopping heating of the electromagnetic heating device based on the comparison result.

[0009] In the preferred technical solution of the above-mentioned drum drying method, the step of "selectively stopping the electromagnetic heating device from heating according to the comparison result" specifically includes: if the humidity value is less than the first preset value, stopping the electromagnetic heating device from heating.

[0010] In the preferred technical solution of the above-mentioned drum drying method, the step of "selectively stopping the electromagnetic heating device from heating according to the comparison result" specifically includes: if the humidity value is less than the first preset value for a duration reaching a preset time, stopping the electromagnetic heating device from heating.

[0011] In the preferred technical solution of the above-mentioned drum drying method, the drum drying method further includes: obtaining a temperature value of the metal drum; comparing the temperature value with a second preset value; and selectively stopping heating by the electromagnetic heating device according to the comparison result.

[0012] In the preferred technical solution of the above-mentioned drum drying method, the step of "selectively stopping the electromagnetic heating device from heating according to the comparison result" specifically includes: if the temperature value is greater than the second preset value, stopping the electromagnetic heating device from heating.

[0013] In the preferred technical solution of the above-mentioned cylinder drying method, the electromagnetic heating device includes an electromagnetic heating component, a driving component and a transmission assembly connected between the electromagnetic heating component and the driving component, and the driving component is installed on the fixing device. The cylinder heating method also includes: during the process of the electromagnetic heating device heating the metal cylinder, the driving component drives the electromagnetic heating component to move back and forth along the axial direction of the metal cylinder.

[0014] In the preferred technical solution of the above-mentioned drum drying method, the electromagnetic heating device also includes a first guide member arranged on the fixing device and a second guide member arranged on the electromagnetic heating member. The first guide member and the second guide member cooperate with each other to prevent the electromagnetic heating member from shaking left and right during the reciprocating movement.

[0015] In the preferred technical solution of the above-mentioned drum drying method, the water inlet and water outlet assembly includes a first water inlet and water outlet assembly, an adapter, and a second water inlet and water outlet assembly that are connected in sequence, the first water inlet and water outlet assembly is connected to the metal drum, the second water inlet and water outlet assembly is connected to the drainage pump, the adapter is installed on the fixing device, and the first water inlet and water outlet assembly and the part of the adapter connected to the first water inlet and water outlet assembly can rotate with the metal drum.

[0016] In a preferred technical solution of the above-mentioned drum drying method, the drum drying method further comprises: during the process of the electromagnetic heating device heating the metal drum, the metal drum is continuously rotated.

[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 metal drum for holding the items to be washed and the wash water. Therefore, only the interior of the metal drum needs to be cleaned, which is very convenient. Furthermore, compared to the washing machine disclosed in patent publication number CN206266882U, the washing machine of the present invention has the clothing loading port located at the front end of the metal drum. First, no matter where the metal drum is stopped, the drum door on the metal drum is aligned with the opening on the housing, and there is no possibility of the drum door being unable to open. Second, the front-opening design is very suitable for the usage habits of most users, and the washing machine can be placed in an embedded manner, saving space. In addition, the washing machine is also provided with an electromagnetic heating device. When the wash water needs to be heated, it can directly heat the metal drum to increase the temperature of the wash water in the metal drum, which has high heating efficiency. After the wash water in the metal drum is drained, the electromagnetic heating device heats the metal drum, which can evaporate the remaining water in the metal drum, preventing the growth of bacteria in the drum. At the same time, the drain pump is activated to discharge the water vapor in the metal drum, preventing the water vapor from re-condensing into water after the metal drum cools.

[0018] Furthermore, the drum drying method of the present invention further includes: obtaining a temperature value of the metal drum; comparing the temperature value with a second preset value; and if the temperature value is greater than the second preset value, stopping heating by the electromagnetic heating device. This configuration can avoid safety accidents caused by excessively high metal drum temperatures.

[0019] Furthermore, the drum drying method of the present invention further includes: continuously rotating the metal drum while the electromagnetic heating device is heating the metal drum. Continuously rotating the metal drum allows for uniform heating of the metal drum, thereby improving drying efficiency and saving time.

[0020] Furthermore, the electromagnetic heating device includes an electromagnetic heating member, a driving member, and a transmission assembly for connecting the electromagnetic heating member and the driving member. The driving member is mounted on a fixing device and is capable of driving the transmission assembly to move, thereby driving the electromagnetic heating member to reciprocate along the axial direction of the metal cylinder. This arrangement allows the electromagnetic heating member to uniformly heat the metal cylinder, thereby improving drying efficiency.

[0021] Furthermore, the water inlet and outlet assembly includes a first water inlet and outlet assembly, an adapter, and a second water inlet and outlet assembly that are connected in sequence. The first water inlet and outlet assembly is connected to the second end of the metal cylinder, and the second water inlet and outlet assembly is connected to the drainage pump. The adapter is installed on the fixing device, and the first water inlet and outlet assembly and the part connected to the first water inlet and outlet assembly can rotate with the metal cylinder.

[0022] As can be seen from the background technology, the washing machine disclosed in the patent with publication number CN206266882U directly extends the water inlet pipe and the drain pipe into the washing tub. 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.

[0023] Compared with the washing machine disclosed in the patent publication number CN206266882U, in the washing machine of the present invention, when the metal drum rotates, the first water inlet and outlet assembly can rotate synchronously with the metal drum. In this way, it is only necessary to open a water through hole on the metal drum to connect the first water inlet and outlet assembly with the water through hole. The first water inlet and outlet assembly does not need to extend into the interior of the metal drum, so there will be no water leakage and the clothes in the metal drum will not collide with the water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the structure of the drum washing machine of the present invention. Figure 3 ;

[0028] Figure 4 It is a structural schematic diagram of a fixing device for a drum washing machine of the present invention;

[0029] Figure 5 1 is a schematic structural diagram of a washing drum of a drum washing machine of the present invention;

[0030] 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;

[0031] Figure 7 2 is a schematic structural diagram of a water collecting member of a drum washing machine of the present invention;

[0032] 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;

[0033] Figure 9 2. It is a schematic structural diagram of the connecting member of the drum washing machine of the present invention;

[0034] Figure 10 This is a schematic diagram of the assembly of the washing drum and electromagnetic heating device of the drum washing machine of the present invention. Figure 1 ;

[0035] Figure 11 This is a schematic diagram of the assembly of the washing drum and electromagnetic heating device of the drum washing machine of the present invention. Figure 2 ;

[0036] Figure 12 is a flow chart of a drum drying method for a drum washing machine of the present invention;

[0037] Figure 13 4 is a flow chart of an embodiment of a drum drying method for a drum washing machine according to the present invention.

[0038] List of reference numerals:

[0039] 1. Box; 2. Washing drum; 21. Metal drum; 22. Rotating shaft; 23. Connecting member; 24. Bearing; 211. Clothes inlet; 212. Water outlet; 213. Water collecting ring; 221. Channel; 231. Cylindrical body; 232. Connecting arm; 2321. Strip; 2322. Reinforcement member; 31. First motor; 32. Belt; 33. Pulley; 41. Suspension spring; 42. Damper; 51. Main frame; 52. Roller; 511. Cylindrical structure; 512. Beam; 513. Upper accommodating area; 51 4. 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. Electromagnetic heating component; 82. Second motor; 83. Screw; 84. Nut; 85. Support plate; 86. Guide rod; 87. Connecting rod; 88. Plate-shaped component; 89. Rod-shaped component; 851. Guide groove. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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 2This 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 .

[0044] 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.

[0045] 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 The left end of the washing drum 2 is formed with a clothing loading port 211. 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 the left end). Figure 1 The washing machine is driven by the first motor 31 and the second motor 31 (seeing from above, the right end of the washing drum 2). 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 through the rotating shaft 22. For example, the driving device includes a first motor 31, a belt 32 and a pulley 33, wherein the pulley 33 is fixedly connected to the rotating shaft 22, one end of the belt 32 is connected to the output shaft of the first motor 31, and a small pulley is generally installed on the output shaft of the first motor 31. 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 first motor 31 drives the pulley 33 and the rotating shaft 22 to rotate through the belt 32.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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 The right end of the main frame 51 is rotatably connected to the main frame 51. A 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 support structure is a cylindrical structure 511.

[0051] Continue reading Figure 2 and Figure 4 The fixing device further includes a plurality of rollers 52 disposed on the main frame 51. When properly 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 and extending the service life of the rotating shaft 22.

[0052] Continue reading Figure 4 The main frame 51 includes two accommodating areas, which are arranged in the 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.

[0053] Next see Figure 5 , Figure 5 Schematic diagram of the structure of the drum washing machine of the present invention. Figure 5 As shown, a water passage structure is formed at the rear end of the washing drum 2, and the water inlet and outlet device is connected to the water passage structure. Through this water passage structure, water can be supplied into the washing drum 2 or the water in the washing drum 2 can be drained. Preferably, the water passage structure is a water passage 212 formed at the junction of the rear wall and the inner wall of the washing drum 2. By arranging the water passage 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. The inner diameter of the front end of the washing drum 2 is smaller than the inner diameter of the rear end of the washing drum 2. This arrangement facilitates the flow of water in the washing drum 2 to the water passage 212.

[0054] Continue reading Figure 5A 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.

[0055] 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 2 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.

[0056] like Figure 1 、 Figure 3 、 Figure 6 and Figure 8 As shown, the water inlet and drain device includes a water inlet and drain assembly and a drain pump 67. The first end of the water inlet and drain assembly is connected to the rear end of the washing drum 2, and the second end of the water inlet and drain assembly is connected to the drain pump 67. The water inlet and drain assembly includes a first water inlet and drain assembly, an adapter, and a second water inlet and drain assembly, which are connected in sequence. The first water inlet and drain assembly is connected to the water inlet 212 formed at the rear end of the washing drum 2. In other words, the first water inlet and drain assembly does not need to extend into the interior of the washing drum 2. The second water inlet and drain assembly is connected to the drain pump 67, and the adapter is mounted on the cylindrical structure 511. When the washing drum 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 drum 2, while the second water inlet and drain assembly and the portion of the adapter connected to the second water inlet and drain assembly are fixed and stationary.

[0057] 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 drain pump 67, 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 together with the washing drum 2. The second water inlet and outlet assembly is connected to the drain pump 67 and needs to be kept fixed.

[0058] Continue reading Figure 1 、 Figure 3 and Figure 8The 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.

[0059] Continue reading Figures 5 to 8 The 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 the first water pipes 61 can be multiple. For example, the number of the first water pipes 61 is three, and accordingly, the number of the water outlets 212 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 the 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. 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.

[0060] 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.

[0061] Continue reading Figure 8 The shaft 22 is provided with a channel 221, through which the first water inlet and outlet assembly communicates with the rotating tee 64. The inner diameter of the channel 221 is larger than the outer diameter of the cylindrical structure 511. The cylindrical structure 511 is inserted into the channel 221 of the shaft 22, and the two are connected by a bearing 24 to enable relative rotation.

[0062] Continue reading Figure 5 and Figure 8 , and then see Figure 9 , Figure 9It is a structural schematic diagram of the connecting components of the drum washing machine of the present invention.

[0063] like Figure 5 、 Figure 8 and Figure 9 As shown, the washing drum 2 includes a metal drum 21, a rotating shaft 22 and a connecting member 23, wherein the metal drum 21 is used to accommodate items to be washed and washing water, a clothing inlet 211, a water outlet 212 and a water collecting ring 213 are all formed on the metal drum 21, and one end of the connecting member 23 is connected to the rear end of the metal drum 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 metal cylinder 21 through the connecting member 23. When the driving device drives the rotating shaft 22 to rotate, the rotating shaft 22 drives the metal cylinder 21 to rotate synchronously through the connecting member 23.

[0064] 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, illustratively, 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 provided. During installation, the rotating shaft 22 can be inserted into the cylindrical body 231, and the two can adopt an interference fit. When installed, the connecting arm 232 is fixedly connected to the rear end of the metal cylinder 21, and the rotating shaft 22 is fixedly connected to the cylindrical body 231. In addition, there is a certain gap between the end of the rotating shaft 22 and the rear end of the metal cylinder 21, and the second end of the first water pipe 61 can enter the channel 221 of the rotating shaft 22 by means of this gap.

[0065] 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 metal cylinder 21, and the water diversion port 621 of the water collecting part 62 is facing the metal cylinder 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 metal cylinder 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 .

[0066] 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.

[0067] Continue reading Figure 9 The structures of the three connecting arms 232 are the same. Taking one of them as an example, the connecting arms 232 all include a strip piece 2321 and a reinforcement piece 2322, wherein there are two strip pieces 2321, and the two strip pieces 2321 are arranged with a gap, and the strip piece 2321 is fixedly connected to the cylindrical body 231 or is arranged as an integral whole; the number of reinforcement pieces 2322 is multiple, and illustratively, the number of reinforcement pieces 2322 is two, and the two ends of the reinforcement piece 2322 are respectively fixedly connected to the two strip pieces 2321 or are arranged as an integral whole.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] When the washing drum 2 rotates, the centripetal force keeps the spherical structure 73 within the accommodating chamber 72. In this state, the water outlet 212 remains connected to the corresponding connecting chamber 71 and the first water pipe 61. When the washing drum 2 stops rotating, two air leakage prevention units are located at the top, and one air leakage prevention unit is located at the bottom. The spherical structure 73 of the air leakage prevention unit at the bottom is located within the accommodating chamber 72 under the action of its own gravity. The water outlet 212 at the bottom (which is immersed in water) remains connected to the corresponding connecting chamber 71 and the first water pipe 61, allowing drainage. 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.

[0074] 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.

[0075] Next see Figure 10 and Figure 11 ,in, Figure 10 Schematic diagram of the assembly of the washing drum and electromagnetic heating 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 heating device of the drum washing machine of the present invention Figure 2 .

[0076] like Figure 10 and Figure 11 As shown, the drum washing machine of the present invention further includes an electromagnetic heating device, which is mounted on a fixing device. For example, the electromagnetic heating device can be mounted in the lower receiving area 514 of the main frame 51. The electromagnetic heating device can directly heat the metal drum 21 to increase the temperature of the washing water in the metal drum 21. The metal drum 21 can be made of magnetic stainless steel.

[0077] Continue reading Figure 10 and Figure 11 The electromagnetic heating device includes an electromagnetic heating component 81, a drive component, and a transmission assembly. The electromagnetic heating component 81 is connected to the drive component via the transmission assembly. The drive component is mounted on a fixture. For example, the drive component can be mounted within the lower accommodating area 514 of the main frame 51. After the electromagnetic heating component 81 is energized, the drive component can be activated, which drives the transmission assembly to move the electromagnetic heating component 81 back and forth along the axial direction of the metal cylinder 21. By causing the electromagnetic heating component 81 to reciprocate along the axial direction of the metal cylinder 21, the metal cylinder 21 can be uniformly heated, thereby improving heating efficiency.

[0078] Continue reading Figure 10 and Figure 11 The driving component is preferably a motor, denoted as the second motor 82, and the transmission assembly includes a screw 83 and a nut 84, and the screw 83 and the nut 84 are threaded together, wherein the screw 83 is fixedly connected to the output shaft of the second motor 82, and the nut 84 is connected to the electromagnetic heating component 81. The second motor 82 can drive the screw 83 to rotate. When the screw 83 rotates, the nut 84 can move left and right along the screw 83, and at the same time drive the electromagnetic heating component 81 to move back and forth along the axial direction of the metal cylinder 21.

[0079] The electromagnetic heating device also includes a guide assembly, which includes a first guide member and a second guide member. The first guide member is disposed on the fixing device, and the second guide member is disposed on the electromagnetic heating member 81. When the second motor 82 drives the electromagnetic heating member 81 to reciprocate, the first guide member and the second guide member cooperate to prevent the electromagnetic heating member 81 from rocking left and right during the reciprocating movement. This arrangement makes the electromagnetic heating member 81 more stable during the reciprocating movement, improving heating efficiency.

[0080] Continue reading Figure 10 and Figure 11 The first guide member includes two supporting plates 85 arranged opposite to each other. Figure 11From above, the two support plates 85 are arranged opposite to each other, and each support plate 85 is provided with a guide groove 851, which extends along the length direction of the metal tube 21. The second guide member includes a guide rod 86 and a connecting rod 87. The guide rod 86 is fixedly connected to the electromagnetic heating member 81 through the connecting rod 87. During installation, the guide rod 86 is placed between the two support plates 85, and the two ends of the guide rod 86 are respectively located in the guide grooves 851 provided on the two support plates 85. The guide rod 86 is adapted to the guide grooves 851. During the reciprocating movement of the electromagnetic heating member 81, the two ends of the guide rod 86 slide along the guide grooves 851, which can prevent the electromagnetic heating member 81 from shaking left and right.

[0081] It should be noted that, in actual applications, those skilled in the art may also set the first guide member and the second guide member to other structural forms. For example, the first guide member includes two horizontal guide rods, which are arranged side by side on the left and right. The second guide member is set to a vertical plate-like member. Two guide holes are provided on the plate-like member, and the two guide holes correspond to the two guide rods respectively, etc. Such adjustments and changes to the specific structural forms of the first guide member and the second guide member do not deviate from the principle and scope of the present invention, and should be limited within the scope of protection of the present invention.

[0082] Continue reading Figure 10 There are two guide rods 86 and two connecting rods 87, each corresponding to each other. The guide rods 86 are connected to the electromagnetic heating component 81 through the corresponding connecting rods 87. The two guide rods 86 are arranged front and back along the length of the metal cylinder 21. The two guide rods 86 arranged front and back together guide the electromagnetic heating component 81, which can further improve the stability of the reciprocating movement of the electromagnetic heating component 81.

[0083] Continue reading Figure 10 The guide groove 851 is inclined downward from the front end of the metal cylinder 21 toward the rear end of the metal cylinder 21. From the figure, the guide groove 851 is inclined to the lower right. In this way, the distance between the electromagnetic heating component 81 and the outer cylinder wall of the metal cylinder 21 remains unchanged during the reciprocating movement, which is conducive to improving the heating efficiency.

[0084] Among them, a horizontal plate-like component 88 can be set between the two connecting rods 87, and a through hole is opened on the plate-like component 88. A vertical rod-like component 89 is set on the nut 84. The top end of the rod-like component 89 passes through the through hole, and the rod-like component 89 can move freely up and down in the through hole. In this way, the vertical rod-like component 89 can drive the electromagnetic heating component 81 to move forward and backward, and can also allow the electromagnetic heating component 81 to move up and down.

[0085] Based on the above drum washing machine, the present invention also provides a drum drying method, such as Figure 12 As shown, the drum drying method includes: after draining the wash water from the metal drum, heating the metal drum with an electromagnetic heating device; and activating a drain pump to expel water vapor from the metal drum. After the wash cycle is completed, residual water may remain in the metal drum. Heating the metal drum with the electromagnetic heating device can evaporate the remaining water and prevent the growth of bacteria in the drum. Simultaneously, activating the drain pump to expel the water vapor from the metal drum to prevent the water vapor from recondensing into water after the metal drum cools.

[0086] Preferably, the drum drying method of the present invention further includes: obtaining the humidity value of the gas at the outlet of the drainage pump; comparing the humidity value with a first preset value; and selectively stopping the heating of the electromagnetic heating device according to the comparison result. A humidity sensor can be installed at the outlet of the drainage pump to detect the humidity of the gas, and whether the residual water in the metal drum has been evaporated can be determined based on the humidity value of the gas at the outlet of the drainage pump. The step of "selectively stopping the heating of the electromagnetic heating device according to the comparison result" specifically includes: if the humidity value is less than the first preset value, stopping the heating of the electromagnetic heating device. When the humidity value is less than the first preset value, it means that the residual water in the metal drum has been evaporated, and the electromagnetic heating device can be stopped from heating. Preferably, as Figure 13 As shown, when the humidity value is less than the first preset value for a predetermined time, the electromagnetic heating device stops heating. In other words, heating is not stopped when the humidity value is less than the first preset value. Heating is stopped only when the humidity value is less than the first preset value for a predetermined time. This configuration can avoid misjudgments and improve the accuracy of the control method.

[0087] Preferably, the drum drying method of the present invention further includes: obtaining the temperature value of the metal drum; comparing the temperature value with a second preset value; and selectively stopping the heating of the electromagnetic heating device based on the comparison result. A temperature sensor can be installed on the metal drum to detect the temperature of the metal drum, and to determine whether the temperature of the metal drum is too high based on the temperature of the metal drum. The step of "selectively stopping the heating of the electromagnetic heating device based on the comparison result" specifically includes: if the temperature value is greater than the second preset value, stopping the heating of the electromagnetic heating device. When the temperature value is greater than the second preset value, it indicates that the temperature of the metal drum is too high, and heating needs to be stopped in a timely manner to avoid safety accidents caused by the excessive temperature of the metal drum.

[0088] Preferably, the drum drying method of the present invention further comprises: continuously rotating the metal drum while the electromagnetic heating device is heating the metal drum. Continuously rotating the metal drum allows for uniform heating of the metal drum, thereby improving drying efficiency and saving time.

[0089] 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 drying method for a drum washing machine, the 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 metal drum rotatably disposed in the fixing device for accommodating items to be washed and washing water, wherein a clothing inlet is formed at a first end of the metal drum; An inlet and outlet device, comprising an inlet and outlet assembly and a drain pump, wherein the first end of the inlet and outlet assembly is in communication with the second end of the metal cylinder, and the second end of the inlet and outlet assembly is in communication with the drain pump; the inlet and outlet assembly comprises a first inlet and outlet assembly, an adapter, and a second inlet and outlet assembly that are in communication with each other in sequence, wherein the first inlet and outlet assembly is in communication with the second end of the metal cylinder, and the second inlet and outlet assembly is in communication with the drain pump, the adapter being mounted on the fixing device, and the first inlet and outlet assembly and the portion of the adapter connected to the first inlet and outlet assembly being capable of rotating with the metal cylinder; and an electromagnetic heating device, which is disposed on the fixing device and is capable of heating the metal cylinder; The drum drying method comprises: After draining the washing water from the metal drum, enabling the electromagnetic heating device to heat the metal cylinder; The drainage pump is started to discharge the water vapor in the metal cylinder.

2. The drum drying method according to claim 1, characterized in that The drum drying method further comprises: Obtaining the humidity value of the gas at the outlet of the drainage pump; comparing the humidity value with a first preset value; According to the comparison result, the electromagnetic heating device is selectively stopped from heating.

3. The drum drying method according to claim 2, characterized in that The step of “selectively stopping the electromagnetic heating device from heating according to the comparison result” specifically includes: If the humidity value is less than the first preset value, the electromagnetic heating device stops heating.

4. The drum drying method according to claim 2, characterized in that The step of “selectively stopping the electromagnetic heating device from heating according to the comparison result” specifically includes: If the humidity value is less than the first preset value for a duration reaching a preset time, the electromagnetic heating device stops heating.

5. The drum drying method according to claim 1, characterized in that The drum drying method further comprises: Obtaining the temperature value of the metal cylinder; comparing the temperature value with a second preset value; According to the comparison result, the electromagnetic heating device is selectively stopped from heating.

6. The drum drying method according to claim 5, characterized in that The step of “selectively stopping the electromagnetic heating device from heating according to the comparison result” specifically includes: If the temperature value is greater than the second preset value, the electromagnetic heating device stops heating.

7. The drum drying method according to claim 1, characterized in that The electromagnetic heating device includes an electromagnetic heating component, a driving component, and a transmission assembly connected between the electromagnetic heating component and the driving component, wherein the driving component is mounted on the fixing device. The drum drying method further comprises: During the process of the electromagnetic heating device heating the metal cylinder, the driving member drives the electromagnetic heating member to reciprocate along the axial direction of the metal cylinder.

8. The drum drying method according to claim 7, characterized in that The electromagnetic heating device further includes a first guide member provided on the fixing device and a second guide member provided on the electromagnetic heating member. The first guide member and the second guide member cooperate with each other to prevent the electromagnetic heating member from shaking left and right during the reciprocating movement.

9. The drum drying method according to any one of claims 1 to 8, characterized in that The drum drying method further comprises: During the process of the electromagnetic heating device heating the metal cylinder, the metal cylinder is continuously rotated.

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