Portable washing apparatus

Abstract

The present application provides a portable washing device, specifically comprising a washing drum having an open end and a drum bottom, a rotatable pulsator being arranged on the drum bottom; a dewatering drum being removably inserted into the washing drum and having opposite open edges and a bottom wall, a plurality of rollable units being arranged on the open edges and spaced from each other in a circumferential direction; and a drum cover being configured to openably cover the open end, and an annular groove being arranged on an inner side of the drum cover, during the dewatering process, the plurality of rollable units abutting against a groove bottom of the annular groove, and the bottom wall being matched with the pulsator and leaving a space therebetween, so that the pulsator can drive the dewatering drum to rotate relative to the washing drum; the portable washing device can rotate at a high speed to achieve the purpose of dewatering by the annular groove on the drum cover pressing against the rollable units on the dewatering drum and forming an axial space between the bottom wall of the dewatering drum and the pulsator during the dewatering process, and the volume is significantly reduced, thereby facilitating carrying and moving.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of washing equipment, and particularly provides a portable washing equipment. BACKGROUND

[0002] Washing equipment is one of the common household appliances, such as a drum washing machine or a pulsator washing machine. The size of the household washing equipment is often large, and can wash multiple clothes at a time, meeting the needs of people's home life. However, for small items of underwear, underpants or socks, it is necessary to wash them separately and wash them frequently. If such a large washing equipment is used every time, it will cause waste of resources. At the same time, for users who need to go on business trips or rent houses, the living environment often changes, and the traditional washing equipment is too large in size, which will bring a lot of inconvenience during the moving process. Although hotels or rental areas are provided with public washing equipment, there is a safety problem of cross-infection of bacteria when using such washing equipment. Therefore, a small washing equipment that is convenient to carry and move is needed to solve the above problems.

[0003] For this reason, a portable washing equipment has been developed in the prior art. For example, Chinese patent application CN112442823A discloses a small portable intelligent variable frequency washing machine. The small portable intelligent variable frequency washing machine includes a shell, a bottom plate is arranged at the bottom of the shell, the bottom plate is fixedly connected with the shell; a shell cover is arranged at the top of the shell, the shell cover is movably connected with the shell; the shell includes a washing area and a control area, a pulsator is arranged at the lower part of the washing area, the pulsator is connected with a variable frequency motor; a dehydration basket separated from the shell is arranged in the washing area. In order to perform dehydration, the dehydration basket is inserted into the insertion hole on the convex strip of the pulsator through the insertion block on the bottom of the dehydration basket to form a fixed connection with the pulsator, and a large axial gap is reserved between the top of the dehydration basket and the shell cover. The pulsator generates a large noise during high-speed rotation due to unbalanced distribution of the mass of the clothes and other reasons, and thus generates a large noise. In addition, a large axial gap is reserved between the top of the dehydration basket and the shell cover, resulting in low utilization rate of the dehydration space of the washing machine. Therefore, there is room for improvement in this technical solution.

[0004] Correspondingly, there is a need in the art for a new technical solution to solve the above technical problems. SUMMARY

[0005] To solve the technical problems of large vibration, loud noise and low utilization rate of dehydration space of the existing portable washing equipment, the present application provides a portable washing equipment. The portable washing equipment comprises a washing drum having an open end and a drum bottom, wherein a rotatable impeller is arranged on the drum bottom; a dehydration drum which can be removably inserted into the washing drum and has opposite open edges and a bottom wall, wherein a plurality of rollable units are arranged on the open edges in a circumferential direction and are spaced from each other; and a drum cover which is configured to be capable of covering the open end and is provided with a ring groove on the inner side of the drum cover, wherein, during the dehydration process, the plurality of rollable units abut against the groove bottom of the ring groove, and the bottom wall is matched with the impeller and a space is left between the bottom wall and the impeller, so that the impeller can drive the dehydration drum to rotate relative to the washing drum.

[0006] The open edges of the dehydration drum of the portable washing equipment of the present application are provided with a plurality of rollable units which are spaced from each other in a circumferential direction and are capable of freely rotating around their own axes. During the dehydration of the portable washing equipment, the drum cover covers the open end of the washing drum, the rollable units on the open edges of the dehydration drum directly abut against the groove bottom of the ring groove on the inner side of the drum cover, and the rotation of the dehydration drum can drive the rollable units to rotate around their own axes and roll in the ring groove, so that the dehydration drum is more easily rotated relative to the drum cover, and the drum cover can limit the dehydration drum from jumping or shaking with the impeller, thereby reducing the noise of the portable washing equipment. In addition, the dehydration drum increases the internal dehydration space by abutting against the drum cover, i.e., the washing space between the impeller and the inner side of the drum cover can be used for dehydration, and the axial space formed between the bottom wall of the dehydration drum and the impeller can be used for storing the washing water shaken out from the clothes during the dehydration process. Therefore, compared with the existing portable washing equipment, the volume of the portable washing equipment of the present application is significantly reduced under the condition of having the same dehydration space, so that the portable washing equipment is more convenient to carry and transport.

[0007] In the preferred technical scheme of the above-mentioned portable washing equipment, each rollable unit comprises a fixed shaft mounted on the open edge and extending in a radial direction thereof, and a roller or bearing capable of rotating around the fixed shaft. Through the above-mentioned configuration, when the drum cover is covered on the open end during the dehydration, the outer ring surface of the roller or bearing is in contact with the groove bottom of the ring groove on the inner side of the drum cover and limits the upper end of the dehydration drum. During the dehydration process, the dehydration drum is driven by the impeller to rotate at a high speed, and the roller or bearing abuts against the groove bottom of the ring groove, at this time, the roller or bearing is driven by the dehydration drum to roll along the ring groove. The rolling friction is maintained between the roller or bearing and the ring groove during the process. The structure can effectively reduce the friction between the dehydration drum and the drum cover under the premise of ensuring the stable limitation of the dehydration drum, so as to realize the long-time and stable high-speed rotation of the dehydration drum.

[0008] In the preferred technical scheme of the portable washing device, a plurality of fixing grooves are arranged on the opening edge, each of the fixing grooves accommodates one of the rollable units and allows the roller or bearing to rotate freely therein, each of the fixing shafts is fixed in the corresponding fixing groove and extends along the radial direction of the opening edge, the fixing groove has an opening facing the circumferential outer side or the circumferential inner side of the dehydration cylinder, and the opening is configured to expose the roller or bearing along the axial direction of the dehydration cylinder to the opening edge. Through the above configuration, the fixing grooves are arranged on the opening edge, which can simplify the assembly structure between the rollable unit and the dehydration cylinder and reduce the use of parts. In addition, the roller or bearing is arranged in the fixing groove, which can effectively avoid interference between the roller or bearing and other components, so that the roller or bearing can rotate more stably and safely.

[0009] In the preferred technical scheme of the portable washing device, the dehydration cylinder is provided with an assembly hole at a position corresponding to each fixing groove on the circumferential wall of the dehydration cylinder, and the fixing shaft is riveted with the corresponding assembly hole. Through the above configuration, the fixing shaft is directly riveted with the assembly hole, which can effectively simplify the installation process while ensuring that the fixing shaft is firmly assembled with the fixing groove.

[0010] In the preferred technical scheme of the portable washing device, a plurality of water blocking protrusions are arranged on the inner circumferential surface of the cylinder wall of the washing cylinder and are spaced apart from each other in the circumferential direction, and a predetermined gap is left between each of the water blocking protrusions and the outer circumferential surface of the cylinder wall of the dehydration cylinder when the dehydration cylinder is inserted into the washing cylinder. Through the above configuration, during the dehydration process, the predetermined gap can ensure that the water blocking protrusions do not hinder the rotation of the dehydration cylinder, while the water blocking protrusions can limit the cylinder wall of the dehydration cylinder to avoid lateral tilting or deflection of the dehydration cylinder during high-speed rotation, so that the dehydration cylinder can always rotate stably around its own center line.

[0011] In the preferred technical scheme of the portable washing device, each of the water blocking protrusions has a substantially triangular cross section along the radial direction of the washing cylinder. Through the above configuration, the side wall of each of the water blocking protrusions intersects the cylinder wall of the washing cylinder at an obtuse angle, which can change the flow direction of the washing water without excessively hindering the washing force of the washing water, thereby achieving powerful cleaning in multiple directions.

[0012] In the preferred technical scheme of the portable washing device, the impeller comprises a base plate and a plurality of blades arranged radially and spaced apart from each other formed on the base plate, and a plurality of clamping grooves are arranged on the outer surface of the bottom wall of the dehydration cylinder and can be clamped with one of the plurality of blades respectively. Through the above configuration, the bottom wall of the dehydration cylinder is matched and connected with the impeller through the clamping groove and blade matching clamping, and the cylinder cover is abutted against the rollable unit through the ring groove on the inner side surface of the cylinder cover to press down the dehydration cylinder, so that the clamping groove is firmly clamped on the blade, thereby forming stable limiting in the axial direction of the dehydration cylinder. During the dehydration process, the impeller is driven to rotate synchronously through the clamping of the blade and the clamping groove.

[0013] In the preferred technical scheme of the portable washing device, each clamping groove is surrounded by two clamping legs extending outward from the outer surface of the bottom wall of the dehydration cylinder. Through the above configuration, the two clamping legs are respectively limited and arranged on both sides of the blade, so as to ensure that the clamping leg can effectively transmit the rotating power regardless of the direction of rotation of the impeller. At the same time, since the clamping leg extends outward from the outer surface of the bottom wall of the dehydration cylinder, an axial space with a certain height is formed between the bottom wall of the dehydration cylinder and the base plate of the impeller, and the washing water discharged during dehydration can be conveniently collected in the space, thereby avoiding the washing water from wetting the clothes again.

[0014] In the preferred technical scheme of the portable washing device, a limiting column extending towards the opening end of the washing cylinder is arranged at the radial center of the impeller, and a limiting hole matched with the limiting column is arranged on the bottom wall of the dehydration cylinder. Through the above configuration, the dehydration cylinder can be further limited, so that the dehydration cylinder remains rotating around the central axis of the impeller.

[0015] In the preferred technical scheme of the portable washing device, the portable washing device further comprises a heating chamber, the heating chamber comprises a bottom-sealed heating tray, the heating tray is fixed to the outer surface of the cylinder bottom of the washing cylinder and covered by the cylinder bottom of the washing cylinder, and a plurality of flow guide holes are arranged on the cylinder bottom of the washing cylinder and the base plate of the impeller respectively, so that the heating chamber can be in fluid communication with the inside of the washing cylinder; and a heating device arranged in the heating tray. Through the above configuration, the washing water can circulate and flow in the washing cylinder and the heating chamber, and the heating device can continuously heat the washing water, so as to maintain the washing water in a high temperature state, thereby realizing the high temperature washing function.

[0016] In the preferred embodiment of the portable washing device described above, the portable washing device further includes a housing, with the washing drum arranged within the housing. A motor chamber for accommodating a drive motor is provided between the heating chamber and the housing. The drive shaft of the drive motor rotatably passes through the heating chamber and is fixedly connected to the impeller. This configuration, with its separate housing and washing drum design, facilitates the assembly of the washing device and allows for quick and easy replacement of the housing style according to user preferences, thus meeting individual needs. Attached Figure Description

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a front view of an embodiment of the portable washing device of the present invention;

[0019] Figure 2 This is a top view of an embodiment of the portable washing device of the present invention;

[0020] Figure 3 This is an embodiment of the portable washing device of the present invention. Figure 2 A cross-sectional view taken from the AA section line;

[0021] Figure 4 yes Figure 3 The diagram shown is a cross-sectional view of the exploded structure of an embodiment of the portable washing device of the present invention with the outer casing removed.

[0022] Figure 5 This is a schematic diagram of the structure of the drum cover in an embodiment of the portable washing device of the present invention;

[0023] Figure 6 This is a top view of the structure of the washing drum and the spin-drying drum in an embodiment of the portable washing device of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the spin-drying drum in an embodiment of the portable washing device of the present invention;

[0025] Figure 8 yes Figure 7 Enlarged structural diagram at point B;

[0026] Figure 9 This is a schematic diagram showing the fit between the drum cover, the spin-drying drum, and the impeller in an embodiment of the portable washing device of the present invention.

[0027] List of reference numerals in the attached diagram:

[0028] 1, washing equipment; 11, housing; 111, top opening of the housing; 112, bottom wall of the housing; 113, peripheral wall of the housing; 1131, inner peripheral surface of the peripheral wall of the housing; 114, control button; 21, drum cover; 211, inner side surface of the drum cover; 212, outer side surface of the drum cover; 213, boss; 214, sealing edge; 215, ring groove; 2151, groove bottom of the ring groove; 31, washing drum; 311, open end of the washing drum; 312, drum bottom of the washing drum; 3121, flow guide hole of the drum bottom of the washing drum; 3122, shaft through hole; 313, peripheral wall of the washing drum; 3131, outer peripheral surface of the peripheral wall of the washing drum; 3132, inner peripheral surface of the peripheral wall of the washing drum; 314, first fixing ring; 315, second fixing ring; 316, water blocking boss; 3161, first water blocking surface; 3162, second water blocking surface; 3163, limiting surface; 317, drain pipe; 318, assembly cavity; 41, pulsator; 411, pulsator base plate; 4111, flow guide hole on the pulsator base plate; 412, blade; 413, center column; 4131, fastening hole; 414, limiting column; 51, heating tray; 510, heating chamber; 511, bottom wall of the heating tray; 5111, shaft sealing hole; 512, ring wall of the heating tray; 5121, upper ring surface of the ring wall of the heating tray; 513, heating device; 61, driving motor; 611, driving shaft; 612, motor base; 71, dewatering drum; 710, dewatering hole; 711, open edge of the dewatering drum; 712, bottom wall of the dewatering drum; 7121, limiting hole; 713, peripheral wall of the dewatering drum; 72, rollable unit; 721, fixing groove; 7211, assembly hole; 722, roller; 723, fixing shaft; 7231, limiting flange of the fixing shaft; 73, clamping groove; 731, first clamping leg; 732, second clamping leg. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present application will be described below with reference to the drawings. It should be understood by those skilled in the art that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0030] It should be noted that, in the description of the present application, the terms indicating the direction or positional relationship of "upper", "lower", "inner", "outer" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and is not intended to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, it needs to be explained that in the description of the present application, unless otherwise explicitly specified and limited, the terms "assemble", "arrange", "connect" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In order to solve the technical problems of large vibration, large noise and low dehydration space utilization rate of the existing portable washing equipment, the present application provides a portable washing equipment 1. The portable washing equipment 1 comprises a washing drum 31, the washing drum 31 has an open end 311 and a drum bottom 312, a rotatable impeller 41 is arranged on the drum bottom 312; a dehydration drum 71, the dehydration drum 71 can be removably inserted into the washing drum 31 and has opposite open edges 711 and a bottom wall 712, a plurality of rollable units 72 are arranged on the open edges 711 and are spaced apart from each other in the circumferential direction; and a drum cover 21, the drum cover 21 is configured to be capable of being opened to cover the open end 311, and an annular groove 215 is arranged on the inner side 211 of the drum cover 21, wherein, during the dehydration process, the plurality of rollable units 72 abut against the groove bottom 2151 of the annular groove 215, and the bottom wall 712 is matched with the impeller 41 and a space is left between them, so that the impeller 41 can drive the dehydration drum 71 to rotate relative to the washing drum 31.

[0033] The "rollable unit" mentioned above has various specific forms, including but not limited to the form of a rotating shaft cooperating with a roller, or the form of a rotating groove cooperating with a ball, or the form of a rotating groove cooperating with a rolling column, or other suitable rolling forms, as long as the rotation of the dehydration drum 71 can drive these rollable units 72 to rotate around their own axes and roll in the annular groove 215. The "drum cover 21 is configured to be capable of being opened to cover the open end 311" mentioned above includes that the drum cover 21 is rotatably fixed on the shell 11 or the washing drum 31 to open or close the open end 311 of the washing drum; or the drum cover 21 is separable from the shell 11 or the washing drum 31, and is placed on the open end 311 when the open end 311 of the washing drum needs to be closed, and is directly taken away from the open end 311 when the open end 311 needs to be opened. Specifically, in the case that the drum cover 21 is rotatably fixed on the shell 11 or the washing drum 31, the drum cover 21 can form a flip cover structure in the form of a rotating shaft connection, so that the drum cover 21 can be covered on or removed from the open end 311 by rotating around the shaft.

[0034] Figure 1 is the front view of an embodiment of the portable washing equipment of the present application; Figure 2is a top view of an embodiment of the portable washing apparatus of the present application; Figure 3 is a sectional view taken along the A-A sectional line of the embodiment of the portable washing apparatus of the present application shown in Figure 2 ; Figure 4 is a sectional view taken along the B-B sectional line of the embodiment of the portable washing apparatus of the present application shown in Figure 3 ;

[0035] As shown in Figures 1 to 4 , in one or more embodiments, the portable washing apparatus 1 of the present application includes a housing 11, a drum cover 21, a washing drum 31, a pulsator 41, a heating tray 51, a driving motor 61, and a spin-drying drum 71. A handle (not shown in the figures) can be provided on the housing 11 for the convenience of the user in carrying and placing the portable washing apparatus 1. In addition, an anti-skid pad can be provided on the bottom of the portable washing apparatus 1 to improve the stability of the machine. Alternatively, the housing 11 of the portable washing apparatus 1 of the present application is integrated with the washing drum 31. Alternatively, the portable washing apparatus 1 of the present application is configured without the heating tray 51. The portable washing apparatus 1 of the present application can be powered by a lithium battery. Alternatively, a charging socket can be provided on the housing 11 for the connection of a power cord to an AC power source. The portable washing apparatus of the present application is small in size and light in weight, and can be designed to have a size comparable to that of a 1-L bottle of water. The diameter of the drum cover 21 can be a size that can be held by a palm, such as about 10 cm, so that it can be lifted by a single hand, and thus can be referred to as a "palm washing apparatus". Therefore, the portable washing apparatus of the present application is convenient to carry and use when traveling, staying in school, or renting a house.

[0036] The portable washing apparatus has washing, high-temperature washing, and spin-drying functions, and can be used not only for washing, disinfecting, and cleaning small items of clothing, such as underpants, underwear, or socks, which need to be cleaned frequently, but also for cleaning bibs, gauze, and small items of clothing of infants. The portable washing apparatus can also be placed in a kitchen for washing small items of kitchen supplies, such as rags and gloves, to prevent the skin of the user's hands from being damaged by kitchen cleaners for a long time. In addition, the portable washing apparatus can be used for washing other small items that need to be cleaned frequently, in addition to clothing and kitchen supplies.

[0037] As shown in Figures 1 to 3 , in one or more embodiments, the housing 11 of the portable washing apparatus 1 is substantially cylindrical and has a top opening 111, a bottom wall 112, and a peripheral wall 113 of the housing 11 formed between the top opening 111 and the bottom wall 112, and the peripheral wall 113 is in airtight connection with the bottom wall 112. In one or more embodiments, the bottom wall 112 and the peripheral wall 113 are integrally formed. As shown in Figure 1As shown, control buttons 114 for the washing device 1 are provided on the peripheral wall 113 of the outer casing. In one or more embodiments, the control buttons 114 include power on / off, heating, and spin-drying buttons. In one or more embodiments, the control buttons 114 are located at the lower part of the peripheral wall 113. Alternatively, the control buttons 114 are located at the upper part of the peripheral wall 113 for easy visual access by the user. In one or more embodiments, the outer casing 11 is detachable and can be customized and replaced according to the user's preferences. Further, the shape of the outer casing 11 can be teapot-shaped. Alternatively, the shape of the outer casing 11 can be animal-shaped, cartoon-shaped, polygonal cylindrical, or other shapes that conform to the user's preferences. Further, the pattern or color scheme on the surface of the outer casing 11 can be customized according to the user's preferences to better meet the user's personalized needs.

[0038] like Figures 1 to 4 As shown, the drum cover 21 is mounted on the outer casing 11 and can be opened to cover the opening end 311 of the washing drum 31. In one or more embodiments, the drum cover 21 is assembled with the outer casing 11 by a matching threaded locking structure, and the drum cover 21 can be completely removed from the outer casing 11 or fixed by screwing. Alternatively, the drum cover 21 is assembled with the outer casing 11 by a matching snap-locking structure, and the drum cover 21 can be completely removed from the outer casing 11 or fixed by snap-locking. Alternatively, the drum cover 21 is assembled with the outer casing 11 by a hinge and snap-locking, and the drum cover 21 and the outer casing 11 are rotatably connected by the hinge to form a flip-top structure, so that the drum cover 21 can be opened from one side of the outer casing 11 or locked to the outer casing 11 by snap-locking. When the drum cover 21 and the outer casing 11 adopt a flip-top structure, the control button 114 can be provided on the drum cover 21 for user operation.

[0039] Figure 5 This is a schematic diagram of the cylinder cover structure in an embodiment of the portable washing device of the present invention. (See diagram below.) Figures 3 to 5 As shown, the drum cover 21 has an inner side 211 facing the outer casing 11 and the washing drum 31, and an opposite outer side 212. In one or more embodiments, a boss 213 is formed on the inner side 211. Figure 3 As shown, when the drum cover 21 is assembled onto the outer casing 11 and covers the opening end 311 of the washing drum 31, the boss 213 can extend into the washing drum 31 from the opening end 311. In one or more embodiments, the inner side 211 of the drum cover 21 has a sealing edge 214 surrounding the boss 213. When the drum cover 21 is assembled onto the outer casing 11 and covers the opening end 311 of the washing drum 31, the sealing edge 214 can seal against the opening end 311 of the washing drum 31, ensuring that washing water does not leak from the joint, thereby preventing washing water from entering between the washing drum 31 and the outer casing 11, and thus preventing short circuits or motor burnout. Figures 3 to 5As shown, in one or more embodiments, the boss 213 is provided with an annular groove 215 having an opening facing the washing drum 31, and the groove bottom 2151 of the annular groove 215 faces the washing drum 31.

[0040] As shown, Figure 3 and Figure 4 The washing drum 31 is arranged in the housing 11. The washing drum 31 has an open end 311, a drum bottom 312, and a peripheral wall 313 of the washing drum 31 formed between the open end 311 and the drum bottom 312 and extending in the circumferential direction. As shown, Figure 3 In one or more embodiments, the drum bottom 312 is connected to the peripheral wall 313 with a circular arc transition. In one or more embodiments, the drum bottom 312 is integrally formed with the peripheral wall 313. In one or more embodiments, the washing drum 31 is cylindrical. Alternatively, the washing drum 31 is hexagonal or other suitable shape. As shown, Figure 3 and Figure 4 A plurality of flow guide holes 3121 are arranged on the drum bottom 312 of the washing drum 31. In one or more embodiments, a shaft through hole 3122 is arranged at the radial center of the drum bottom 312, through which a driving shaft 611 of a driving motor 61 can rotate. As shown, Figure 3 In one or more embodiments, a drain pipe 317 is arranged on the peripheral wall 313 of the washing drum 31 near the drum bottom 312 and communicates with the interior of the washing drum 31, to drain the washing water accumulated at the bottom of the washing drum 31 during the dehydration process. Alternatively, the drain pipe 317 is arranged on the drum bottom 312 of the washing drum 31 and communicates with the interior of the washing drum 31.

[0041] With reference to Figure 3 and Figure 4 In one or more embodiments, a first fixing ring 314 is arranged on the outer peripheral surface 3131 of the peripheral wall 313 of the washing drum 31, and the outer ring surface of the first fixing ring 314 is in contact with and fixedly connected to the inner peripheral surface 1131 of the peripheral wall 113 of the housing. In one or more embodiments, the first fixing ring 314 is located at the upper portion of the outer peripheral surface 3131, and the upper ring surface of the first fixing ring 314 is flush with and forms a part of the open end 311 of the washing drum 31. In one or more embodiments, a second fixing ring 315 is also arranged on the outer peripheral surface 3131 of the peripheral wall 313 of the washing drum 31, and the outer ring surface of the second fixing ring 315 is in contact with and fixedly connected to the inner peripheral surface 1131 of the peripheral wall 113 of the housing. In one or more embodiments, the second fixing ring 315 is located at the middle or lower portion of the outer peripheral surface 3131. As shown, Figure 3As shown, in one or more embodiments, the first fixing ring 314 and the second fixing ring 315 are arranged parallel to each other at intervals, and an assembly cavity 318 is formed between the first fixing ring 314, the second fixing ring 315, the peripheral wall 313 of the washing drum, and the peripheral wall 113 of the outer shell. This assembly space 318 facilitates wiring of the portable washing device 1. In one or more embodiments, reinforcing ribs (not shown in the figure) are provided in the assembly space 318 to enhance the structural strength between the peripheral wall 313 of the washing drum and the peripheral wall 113 of the outer shell. In one or more embodiments, the first fixing ring 314 and the second fixing ring 315 are integrally formed with the peripheral wall 313 of the washing drum 31.

[0042] Figure 6 This is a top view schematic diagram of the washing drum and spin-drying drum in an embodiment of the portable washing device of the present invention. Figure 3 , Figure 4 and Figure 6 As shown, in one or more embodiments, a plurality of water-blocking protrusions 316 are circumferentially evenly distributed on the inner circumferential surface 3132 of the washing drum peripheral wall 313. In one or more embodiments, four water-blocking protrusions 316 are circumferentially evenly distributed on the inner circumferential surface 3132. In one or more embodiments, the water-blocking protrusions 316 are integrally formed with the peripheral wall 313 of the washing drum. Figure 3 and Figure 4 As shown, in one or more embodiments, each water-retaining protrusion 316 extends along the central axis of the washing drum 31 (the vertical height direction of the washing drum 31). In one or more embodiments, the lower end of the water-retaining protrusion 316 is at a predetermined distance from the bottom 312 of the washing drum 31 to form a space for accommodating washing water and preventing the washing water spun out during the spin-drying process from re-wetting the clothes. Figure 6 As shown, in one or more embodiments, the water-blocking protrusion 316 has a first water-blocking surface 3161 and a second water-blocking surface 3162. In one or more embodiments, the cross-section of the water-blocking protrusion 316 taken along the radial direction of the washing drum 31 has a generally triangular shape, such that the first water-blocking surface 3161 and the second water-blocking surface 3162 form obtuse angles with the inner circumferential surface 3132 of the washing drum peripheral wall 313, respectively. In one or more embodiments, the junction between the first water-blocking surface 3161 and the second water-blocking surface 3162 is smoothly transitioned and forms a limiting surface 3163. The limiting surface 3163 has a generally arc-shaped outer surface for limiting the radial displacement of the spin-drying drum 71.

[0043] Continue to refer to Figure 3 and Figure 4A pulsator 41 is arranged inside the washing tub 31 at a position close to the tub bottom 312 and is rotatable relative to the tub bottom 312. A predetermined gap is left between the pulsator 41 and the tub bottom 312. In one or more embodiments, the predetermined gap is 2-3 mm. Alternatively, the predetermined gap can be other suitable sizes. As shown in Figure 4 The pulsator has a base plate 411. A plurality of flow guide holes 4111 are arranged on the base plate 411. In one or more embodiments, a plurality of blades 412 are arranged on the upper surface of the base plate 411 and are spaced apart along the circumferential direction. In one or more embodiments, six blades 412 are symmetrically arranged on the base plate 411. Alternatively, the number of blades can be five, seven or other suitable numbers. As shown in Figure 4 In one or more embodiments, a center column 413 is arranged on the central axis of the pulsator 41. A fastening hole 4131 is arranged on the center column 413 and is lockable matched with the driving shaft 611. The fastening hole 4131 extends downward along the central axis of the center column 413 and forms an opening on the lower surface of the base plate 411, so as to facilitate the driving shaft 611 to be inserted into the fastening hole 4131 from below and upward. In one or more embodiments, a limiting column 414 is further arranged on the center column 413.

[0044] With reference to Figure 3 and Figure 4 In one or more embodiments, a heating tray 51 is arranged outside the tub bottom 312 of the washing tub 31. The heating tray 51 has a bottom wall 511 and a ring wall 512 extending upward along the circumference of the bottom wall 511. The bottom wall 511 and the ring wall 512 are tightly connected. Alternatively, the bottom wall 511 and the ring wall 512 are integrally formed. In one or more embodiments, a shaft sealing hole 5111 is arranged on the bottom wall 511 and facilitates the driving shaft 611 to be rotatable. As shown in Figure 4 The upper ring surface 5121 of the ring wall 512 forms an opening of the heating tray 51. In one or more embodiments, the tub bottom 312 of the washing tub 31 covers the opening and is tightly connected with the upper ring surface 5121. The tub bottom 312 of the washing tub and the heating tray 51 enclose a heating chamber 510, and the flow guide holes 3121 on the tub bottom 312 form a fluid communication between the washing tub 31 and the heating chamber 510. As shown in Figure 3 and Figure 4 A heating device 513 is arranged in the heating chamber 510 and is used to heat the washing water. In one or more embodiments, the heating device 513 is a spiral coiled heating strip. Alternatively, the heating device 513 is a heating disc, a heating wire or other suitable heating structure. In one or more embodiments, an electrode is arranged on the ring wall 512 of the heating tray 51 and is waterproof insulated, so as to provide power for the heating device 513. In one or more embodiments, the electrode is a waterproof electrode.

[0045] With reference to the foregoing Figure 3 and Figure 4 In one or more embodiments, the drive motor 61 is disposed between the heating tray 51 and the bottom wall 112 of the housing 11. A drive shaft 611 of the drive motor 61 extends upward along the central axis of the washing drum 31 and is inserted into the fastening hole 4131 after sequentially passing through the shaft sealing hole 5111 and the shaft through hole 3122, so as to form a fastening connection with the impeller 41 and enable the impeller 41 to rotate. In one or more embodiments, an oil seal is installed between the shaft sealing hole 5111 and the drive shaft 611. Alternatively, a sealing bearing is installed between the shaft sealing hole 5111 and the drive shaft 611, or both an oil seal and a sealing bearing are installed, so as to ensure the sealing between the drive shaft 611 and the shaft sealing hole 5111. As shown in Figure 3 In one or more embodiments, a motor base 612 is provided between the drive motor 61 and the bottom wall 112 of the housing 11, so as to facilitate the fixation of the drive motor 61 and provide a damping effect.

[0046] As shown in Figure 3 , Figure 4 and Figure 6 The spin-drying drum 71 is removably inserted into the washing drum 31. In one or more embodiments, the spin-drying drum 71 is in the shape of a cylindrical drum. Alternatively, the spin-drying drum 71 can be in the shape of a hollow circular truncated cone or other suitable shape. The spin-drying drum 71 has a bottom wall 712 and a peripheral wall 713 extending upward along the periphery of the bottom wall 712. In one or more embodiments, the bottom wall 712 and the peripheral wall 713 of the spin-drying drum 71 are integrally formed. As shown in Figure 3 and Figure 4 The upper end of the peripheral wall 713 of the spin-drying drum 71 forms an open edge 711 of the spin-drying drum 71. In one or more embodiments, the lower end of the peripheral wall 713 of the spin-drying drum 71 is connected to the bottom wall 712 in a smooth transition. The spin-drying holes 710 are distributed on both the bottom wall 712 and the peripheral wall 713 of the spin-drying drum 71. When the spin-drying drum 71 is inserted into the washing drum 31, the limiting surface 3163 of the water-blocking protrusion 316 on the washing drum 31 is opposite to the outer peripheral surface of the peripheral wall 713 of the spin-drying drum 71 with a predetermined gap. The water-blocking protrusion 316 limits the peripheral wall 713 of the spin-drying drum 71, so as to avoid the spin-drying drum 71 from being skewed in the radial direction and ensure that the spin-drying drum 71 can always rotate around the central axis thereof.

[0047] Figure 7 is a perspective view of the spin-drying drum in an embodiment of the portable washing device of the present application; Figure 8 is Figure 7 an enlarged structural view of B in Figure 3 , Figure 4 and Figure 7As shown, a plurality of circumferentially spaced rolling units 72 are mounted on the opening edge 711 of the dehydration cylinder 71. In one or more embodiments, the number of rolling units 72 is eight. Alternatively, there may be six, nine, or other suitable numbers of rolling units 72. In one or more embodiments, each rolling unit 72 includes a fixed shaft 723 extending radially along the opening edge 711 and a roller 722 rotatable freely about the fixed shaft 723. Alternatively, the roller 722 is replaced by a bearing, wherein the inner ring of the bearing is fixedly connected to the fixed shaft 723, and the outer ring of the bearing is rotatable freely relative to the inner ring. Alternatively, the rolling unit 72 may be a paired rotating groove and ball bearing structure or other suitable structure.

[0048] like Figures 6 to 8 As shown, in one or more embodiments, a plurality of fixing grooves 721 are evenly distributed circumferentially on the opening edge 711 of the dewatering cylinder 71. Each fixing groove 721 accommodates a rolling unit 72, and a roller 722 or bearing can rotate freely within the fixing groove 721. In one or more embodiments, the opening of each fixing groove 721 faces outward circumferentially from the dewatering cylinder 71. Alternatively, the opening of each fixing groove 721 faces inward circumferentially from the dewatering cylinder 71. Figure 3 and Figure 4 As shown, in one or more embodiments, mounting holes 7211 are provided on the circumferential wall of the dehydration cylinder 71 at positions corresponding to each fixing groove 721. Figure 8 As shown, in one or more embodiments, the local circumferential wall where each mounting hole 7211 is located protrudes radially into the dehydration cylinder 71 and forms a generally rectangular wall to facilitate the formation of the mounting hole 7211 thereon and to facilitate the mounting of the fixing shaft 723 thereon. Alternatively, the local circumferential wall where each mounting hole 7211 is located protrudes radially outward from the dehydration cylinder 71 and forms a generally rectangular wall. The fixing shaft 723 of each rollable unit 72 is riveted to the corresponding mounting hole 7211 and extends radially along the opening edge 711. In one or more embodiments, the length of the fixing shaft 723 is not greater than the radial depth of the fixing groove 721 along the opening edge 711 to ensure that the end of the fixing shaft 723 does not extend radially out of the fixing groove 721 along the opening edge 711, thereby avoiding obstruction and interference with other components. In one or more embodiments, a limiting flange 7231 is formed at the end of the fixing shaft 723 near the roller 722 to limit the range of motion of the roller 722 and prevent the roller 722 from falling off the fixing shaft 723. Figure 3 and Figure 4As shown, when the roller 722 is installed in the fixing groove 721 and sleeved on the fixing shaft 723, the outer circumferential surface of the roller 722 can be exposed to the opening edge 711 along the axial direction of the dehydration cylinder 71, so as to abut against the groove bottom 2151 of the annular groove 215 on the cylinder cover 21. When the roller 722 is installed in the fixing groove 721 and sleeved on the fixing shaft 723, the outer circumferential surface of the roller 722 does not contact the groove wall of the fixing groove 721, so as to allow the roller 722 to rotate more easily relative to the fixing groove 721. It is continued to refer to Figure 3 and Figure 4 In one or more embodiments, a limiting hole 7121 matched with the limiting column 414 is arranged at the radial center of the bottom wall 712 of the dehydration cylinder 71.

[0049] Figure 9 is a schematic view of the cooperation of the cylinder cover, the dehydration cylinder and the pulsator in the embodiment of the portable washing apparatus of the present application. As shown in Figure 3 , Figure 4 and Figure 9 As shown, a plurality of clamping grooves 73 matched with the blades 412 are arranged on the outside of the dehydration cylinder 71 and on the bottom wall 712 of the dehydration cylinder 71. The width of each clamping groove 73 is matched with the width of the corresponding blade 412, and the depth of the clamping groove 73 is not less than the height of the blade 412. In one or more embodiments, the depth of the clamping groove 73 is 2cm-3cm. Alternatively, the depth of the clamping groove 73 can adopt other suitable sizes. In one or more embodiments, the number of the clamping grooves 73 is the same as the number of the blades 412, such as 6, so that the clamping grooves 73 can be matched with the blades 412 one by one. Alternatively, the number of the clamping grooves 73 is less than the number of the blades 412. In one or more embodiments, the clamping groove 73 is surrounded by a first clamping leg 731 and a second clamping leg 732 extending downward from the bottom wall 712 of the dehydration cylinder 71, so that the clamping groove 73 thus formed protrudes from the bottom wall 712. The clamping groove 73 in this configuration can effectively support the dehydration cylinder 71 while ensuring that it can be clamped with the blade 412, so that an axial space is formed between the bottom wall 712 and the pulsator 41, so as to buffer the washing water discharged from the laundry, thereby avoiding that the washing water discharged from the laundry is again soaked. Figure 4 and Figure 9 As shown, in one or more embodiments, the first clamping leg 731 and the second clamping leg 732 extend along the radial direction of the blade 412 and form an elongated clamping leg (not shown in the figure) matched with the blade 412. The elongated clamping groove formed by the elongated clamping leg can completely cover the blade 412, thereby increasing the contact area with the blade 412, so that the rotational force of the pulsator 41 can be more stably and efficiently transmitted to the dehydration cylinder 71.

[0050] For washing, the spin-drying drum 71 is removed from the washing drum 31; washing water and items to be washed are placed into the washing drum 31 through the opening end 311; the drum lid 21 is closed, so that the sealing edge 214 seals against the opening end 311. Then, the washing program is started via the control button 114. In the washing state, the drive shaft 611 drives the impeller 41 to rotate at high speed, causing the washing water to generate vortices. In one or more embodiments, the impeller speed ranges from 500 r / min to 1000 r / min. Optionally, the impeller speed is 800 r / min. The water-blocking protrusion 316 agitates the vortex to change the flow direction of the washing water, causing the washing water to impact the clothes in multiple directions, thereby improving the cleaning effect. During high-temperature washing, the washing water in the washing drum 31 flows sequentially through the guide holes 4111 on the base 411 of the impeller 41 and the guide holes 3121 on the bottom 312 of the washing drum 31 into the heating chamber 510. After being heated by the heating device 513, it flows back into the washing drum 31. The washing water continuously circulates between the washing drum 31 and the heating chamber 510, ensuring that the water temperature remains within the high-temperature washing range, thereby achieving sterilization and disinfection of the items to be washed.

[0051] When spin-drying is required, insert the spin-drying drum 71 into the washing drum 31. Specifically, as follows: Figure 4 As shown, align the limiting hole 7121 on the bottom wall 712 of the dehydration cylinder 71 with the limiting post 414 on the impeller 41, and make the slot 73 engage with the corresponding blade 412, thus forming a stable connection between the dehydration cylinder 71 and the impeller 41. Then, place the item to be dehydrated into the dehydration cylinder 71 and close the cylinder cover 21. Figure 3 As shown, when the drum cover 21 and the washing drum 31 form a sealed fit, the roller 722 of the rolling unit 72 abuts against the bottom 2151 of the annular groove 215, causing the drum cover 21 to press down and abut against the spin-drying drum 71. The spin-drying program is started by controlling button 114. In the spin-drying state, the impeller 41 drives the spin-drying drum 71 to rotate at high speed. Under the action of centrifugal force, the washing water on the items to be dehydrated is thrown out. In one or more embodiments, the impeller speed range is between 800 r / min and 1200 r / min in the spin-drying state. Optionally, the impeller speed is 1000 r / min. The dehydrated washing water can be discharged from the drain pipe 317. Alternatively, the washing drum 31 is not provided with a drain pipe to further simplify the structure and reduce the size of the washing equipment. In this case, the dehydrated washing water can be poured out directly from the opening end 311 of the washing drum 31. It should be noted that if there is a lot of residual wash water in the clothes to be spun, they can be spun in multiple stages. After each spin-drying, pour out the wash water from the opening end 311. After multiple spin-drying stages, the clothes can reach a suitable level of dryness.

[0052] The technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical schemes after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A portable washing apparatus, characterized by comprising: The portable washing apparatus comprises: a washing tub having an open end and a tub bottom on which a rotatable pulsator is arranged; a dewatering tub which is removably inserted into the washing tub and has opposite open edges and a bottom wall on which a plurality of rollable units are arranged circumferentially and spaced apart from each other; and a tub cover configured to openably cover the open end of the washing tub and having a ring groove on an inner side thereof, wherein, during a dewatering process, the plurality of rollable units abut against a groove bottom of the ring groove, and the bottom wall is fitted with the pulsator with a space therebetween, so that the pulsator can drive the dewatering tub to rotate relative to the washing tub; wherein each of the rollable units comprises a fixed shaft mounted on the open edge and extending radially therefrom, and a roller or bearing rotatable about the fixed shaft; wherein a plurality of fixed grooves are arranged on the open edge, each of the fixed grooves accommodating one of the rollable units and allowing the roller or bearing to freely rotate therein, each of the fixed shafts is fixed in a corresponding one of the fixed grooves and extends radially along the open edge, the fixed grooves have openings facing a circumferential outer side or a circumferential inner side of the dewatering tub, and the openings are configured to expose the roller or bearing along the dewatering tub to the open edge.

2. The portable washing apparatus according to claim 1, wherein An assembly hole is arranged on the circumferential wall of the dewatering tub at a position corresponding to each fixed groove, and the fixed shaft and the corresponding assembly hole form a rivet.

3. The portable washing apparatus according to claim 1 or 2, characterized by, A plurality of water blocking protrusions are arranged on an inner circumferential surface of a tub wall of the washing tub and spaced apart from each other in a circumferential direction, and a predetermined gap is left between each of the water blocking protrusions and an outer circumferential surface of a tub wall of the dewatering tub when the dewatering tub is inserted into the washing tub.

4. The portable washing apparatus according to claim 2, wherein Each of the water blocking protrusions has a triangular cross section along a radial direction of the washing tub.

5. The portable washing apparatus according to claim 1 or 2, wherein The pulsator comprises a base plate and a plurality of blades arranged radially and spaced apart from each other on the base plate, and a plurality of clamping grooves are arranged on an outer surface of the bottom wall of the dewatering tub and can be respectively clamped with one of the plurality of blades.

6. The portable washing apparatus according to claim 5, wherein Each clamping groove is surrounded by two clamping legs extending outwardly from the outer surface of the bottom wall of the dewatering tub.

7. The portable washing apparatus according to claim 5, wherein A limiting column extending toward the open end of the washing tub is arranged at a radial center of the pulsator, and a limiting hole matching the limiting column is arranged on the bottom wall of the dewatering tub.

8. The portable washing apparatus according to claim 1 or 2, wherein The portable washing apparatus further comprises: a heating chamber comprising a bottom-sealed heating tray fixed to an outer surface of a tub bottom of the washing tub and covered by the tub bottom of the washing tub, and a plurality of flow guide holes are respectively arranged on the tub bottom of the washing tub and the base plate of the pulsator in a distributed manner, so that the heating chamber can be in fluid communication with an interior of the washing tub; and a heating device arranged in the heating tray.

Images