Drum-type single tub washing machine

Abstract

The application provides a drum type single-drum washing machine, and relates to the technical field of household appliances, which mainly comprises a shell, a drum, a plurality of lifting ribs and a drain valve; the shell is placed on the ground; the drum is rotatably installed in the shell, the lateral wall of the drum is of a closed structure, the axis of the drum intersects with the ground, the first end of the drum is higher than the second end, and the first end of the drum is provided with a drum opening; the plurality of lifting ribs are installed on the inner wall of the drum and have a first drain channel inside, which is used for guiding water on the inner side of the drum to the outer side of the drum; and the drain valve is arranged at the water outlet end of the first drain channel of the lifting rib. According to the embodiment provided in the application, the drum is of a single-drum and non-porous structure, the outer drum is completely cancelled, the problem of dirt accumulation in the inner-outer drum interlayer is fundamentally solved, the secondary pollution of clothes is avoided, and the health dead angle is completely eliminated.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and in particular to a drum-type single-tub washing machine. Background Technology

[0002] Front-loading washing machines have become the mainstream household washing machine due to their superior washing performance and low wear and tear on clothes. With the upgrading of consumption, washer-dryer combos with drying functions are gradually becoming more common in urban households. The drying function is mainly achieved through two methods: electric heating drying and heat pump drying. Among them, heat pump drying is becoming the mainstream choice for high-end products due to its significant energy-saving effect, low drying temperature, and gentleness on clothes.

[0003] Traditional front-loading washing machines generally use a double-drum structure: the outer drum holds the washing water, and the inner drum has many through holes in its wall, through which water flows between the inner and outer drums during washing. This structure, after long-term use, leads to the accumulation of dirt and grime in the space between the inner and outer drums, making it difficult to clean thoroughly. Summary of the Invention

[0004] This application addresses the shortcomings of existing methods by providing a drum-type single-drum washing machine to solve the technical problem of dirt and grime accumulating in the interlayer between the inner and outer drums in the prior art.

[0005] This application provides a drum-type single-tub washing machine, which mainly includes a shell, a drum, multiple lifting ribs, and a drain valve; the shell is placed on the ground; the drum is rotatably installed inside the shell, the side wall of the drum is a closed structure, the axis of the drum intersects the ground, the first end of the drum is higher than the second end, and the first end of the drum has a drum opening; multiple lifting ribs are installed on the inner wall of the drum, and the inside has a first drain channel for guiding water from the inside of the drum to the outside of the drum; the drain valve is located at the outlet end of the first drain channel of the lifting ribs.

[0006] As an optional implementation, the drum-type single-drum washing machine further includes a hollow shaft connected to the drum for driving the drum to rotate under the drive of a drive motor. The hollow shaft is also connected to the drum for conveying hot air for drying into the drum.

[0007] As an optional implementation, the hollow shaft includes a first section and a second section connected together, the inner diameter of the second section gradually decreasing along the direction from the second section to the first section until it is the same as the inner diameter of the first section; the end of the second section with a larger inner diameter faces the inside of the roller.

[0008] As an optional implementation, the inner wall of the roller has a circular cross-section and an axial cross-section that is trapezoidal; the cylinder opening is located at the small end of the trapezoid; and the water outlet of the first drainage channel is located at the large end of the trapezoid.

[0009] In one optional implementation, the lifting rib extends along the axis of the roller, and the lifting rib includes a first base and a first rib protruding from the top of the first base; the first base is plate-shaped, and the bottom of the first base has a first drainage groove recessed towards the top, and the groove wall of the first drainage groove has a water inlet hole communicating with the inside and outside of the first drainage groove, and the depth of the first drainage groove gradually increases along the direction from the first end of the roller to the second end; the first base is fixed to the inner wall of the roller, and the first drainage groove and the inner wall of the roller form a first drainage structure; the first rib has a second drainage structure inside, the water inlet of the second drainage structure is opened on the side and top of the first rib, and the water outlet of the second drainage structure is opened in the first drainage groove; the first drainage structure and the second drainage structure constitute the first drainage channel.

[0010] As an optional implementation, the drum-type single-tub washing machine further includes multiple drainage components. These drainage components are installed on the inner wall of the drum and have a second drainage channel inside, used to guide water from the inside of the drum to the outside of the drum; a drain valve is located at the outlet end of the first drainage channel of the lifting rib and the second drainage channel of the drainage component.

[0011] In one optional implementation, the drainage component extends along the axis of the roller and includes a second base and a second rib protruding from the top of the second base. The second base is plate-shaped, and its bottom has a second drainage groove recessed towards the top. The groove wall of the second drainage groove has an inlet hole communicating with the inside and outside of the groove. The depth of the second drainage groove gradually increases along the direction from the first end to the second end of the roller. The second base is fixed to the inner wall of the roller, and the second drainage groove and the inner wall of the roller form a third drainage structure. The second rib has a fourth drainage structure inside, with the inlet of the fourth drainage structure located on the side and top of the second rib, and the outlet of the fourth drainage structure located inside the second drainage groove. The third drainage structure and the fourth drainage structure constitute the second drainage channel.

[0012] As an optional implementation, the lifting ribs and the drainage components are alternately arranged along the circumference of the roller; the height of the lifting ribs protruding radially along the roller is greater than the height of the drainage components protruding radially along the roller.

[0013] As an optional implementation, the drum-type single-drum washing machine further includes a drive motor, a first control unit, a second control unit, a wireless power receiving unit, and a wireless power transmitting unit; the drive motor is drivenly connected to the hollow shaft and is used to drive the drum to rotate; the first control unit is mounted on the drum and rotates with the drum, and the first control unit is also electrically connected to the drain valve; the wireless power receiving unit is mounted on the drum and electrically connected to the first control unit, and is used to supply power to the first control unit; the wireless power transmitting unit is mounted on the water collection ring, and is used to connect to an external power source to obtain electrical energy and to transmit electrical energy to the wireless power receiving unit; the second control unit is mounted inside the outer casing, and its control terminal is electrically connected to the wireless power transmitting unit and the drive motor, and exchanges data with the first control unit wirelessly.

[0014] As an optional implementation, the drum-type single-tub washing machine further includes multiple water level detection units, which are evenly arranged at the second end of the drum along the circumference of the drum.

[0015] This application provides a drum-type single-tub washing machine. The technical solution provided by the embodiments of this application brings at least the following beneficial effects:

[0016] By adopting a single-drum, non-perforated structure, the outer drum is completely eliminated, fundamentally solving the problem of dirt and grime accumulating between the inner and outer drums, preventing secondary contamination of clothes, and completely eliminating hygiene dead spots. Water is guided to the outside of the drum through the first drainage channel inside the lifting ribs for drainage. Air intake is achieved using the hollow shaft at the rear of the drum for drying. Non-contact power supply and wireless communication technology enable control of the drain valve and water level detection unit that rotate with the drum, eliminating the need for complex structures such as slip rings. The multi-point, ring-shaped water level detection unit and algorithm processing accurately detect water levels even when the drum is stationary or rotating at low speed, providing accurate data for water intake control.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 This is a longitudinal cross-sectional structural diagram of a drum-type single-tub washing machine provided in an embodiment of this application.

[0020] Figure 2 This is a front oblique view of a drum-type single-tub washing machine provided in an embodiment of this application.

[0021] Figure 3 This is a rear oblique view of a drum-type single-tub washing machine provided in an embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the longitudinal cross-sectional structure of the hollow shaft in a drum-type single-drum washing machine provided in an embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the lifting ribs in a drum-type single-drum washing machine provided in an embodiment of this application.

[0024] Figure 6 This is a cross-sectional schematic diagram of the lifting rib structure in a drum-type single-drum washing machine provided in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the drainage component in a drum-type single-tub washing machine provided in an embodiment of this application.

[0026] Figure 8 This is a cross-sectional structural diagram of the drainage component in a drum-type single-tub washing machine provided in an embodiment of this application.

[0027] Figure labels and corresponding explanations:

[0028] 1: Roller.

[0029] 2: Lifting rib; 21: First base; 22: First protruding rib; 23: First drainage groove; 24: Second drainage structure.

[0030] 3: Drain valve.

[0031] 4: Hollow shaft; 41: First section; 42: Second section.

[0032] 5: Drainage component; 51: Second base; 52: Second rib; 53: Second drainage groove; 54: Fourth drainage structure.

[0033] 6: Drive motor.

[0034] 7: Floating support.

[0035] 8: Balance ring.

[0036] 9: Water collection ring.

[0037] 10: First control unit.

[0038] 11: Wireless power supply transmitter unit.

[0039] 12: Water level detection unit Detailed Implementation

[0040] This application is described in detail below. Examples of embodiments of this application are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Furthermore, detailed descriptions of known technologies that are unnecessary for the features of this application are omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0041] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in the specification of this application means the presence of the stated features, elements, and / or components, but does not exclude the presence or addition of one or more other features, elements, components, and / or groups thereof. The term “and / or” as used herein includes all or any units and all combinations thereof of one or more associated listed items.

[0042] This application provides a drum-type single-tub washing machine, which mainly includes a shell, a drum 1, multiple lifting ribs 2, and a drain valve 3; the shell is placed on the ground; the drum 1 is rotatably installed inside the shell, the side wall of the drum 1 is a closed structure, the axis of the drum 1 intersects the ground, the first end of the drum 1 is higher than the second end, and the first end of the drum 1 has a drum opening; multiple lifting ribs 2 are installed on the inner wall of the drum 1, and have a first drain channel inside, which is used to guide the water inside the drum 1 to drain to the outside of the drum 1; the drain valve 3 is set at the water outlet end of the first drain channel of the lifting rib 2.

[0043] In this embodiment, the outer casing has an internal cavity, and the outer casing is placed on the ground or a flat surface to form the external structure of the washing machine. The drum-type single-drum washing machine also includes at least a drive motor 6, a floating bracket 7, a water collection ring 9, and a bearing seat disposed within the outer casing. The floating bracket 7 is connected to the outer casing via a shock absorber; the water collection ring 9 is fixed to the floating bracket 7, the bearing seat is also fixed to the floating bracket 7, and the stator of the drive motor 6 is fixed to the bearing seat.

[0044] The roller 1 is rotatably mounted on a floating bracket 7, which is fixed within the housing cavity by a shock-absorbing system. The first end of the roller 1 is positioned at the front, and the second end at the rear. The axis of the roller 1 is set at an inclined angle to the ground, so that the front end of the roller 1 is higher than the rear end. This facilitates the entry and exit of clothes and allows water to flow naturally to the lower rear end under gravity and accumulate, which is convenient for drainage and reduces the risk of water overflowing from the drum opening.

[0045] The sidewall of drum 1 has a non-porous structure. In this embodiment, there is no water-collecting outer drum, only a water-collecting ring 9. Water discharged into the water-collecting ring 9 does not return to the drum, fundamentally solving the problem of dirt and grime accumulating between the inner and outer drums, avoiding secondary contamination of clothes, and eliminating hygiene dead spots. In addition, the washing water exists only inside drum 1 and is used entirely for soaking and washing clothes. There is no water accumulation in the outer drum, thus saving water.

[0046] As an optional implementation, the drum-type single-drum washing machine also includes a hollow shaft 4, which is connected to the drum 1 and is used to drive the drum 1 to rotate under the drive of the drive motor 6. The hollow shaft 4 is also connected to the drum 1 and is used to deliver hot air for drying into the drum 1.

[0047] Based on the aforementioned embodiments, in this embodiment, the hollow shaft 4 is cylindrical in shape and is a hollow tube. The hollow shaft 4 is connected to the second end of the drum 1. The second end of the drum 1 has a through hole, and one end of the hollow shaft 4 is fixed to the through hole at the second end of the drum 1 with screws, thus connecting the hollow shaft 4 to the drum 1. The hollow shaft 4 and the drum 1 are coaxially arranged, meaning the hollow shaft 4 is also inclined relative to the ground. During drying, hot air enters various areas inside the drum 1 through the hollow shaft 4. The hollow shaft 4 rotates synchronously when the drum 1 rotates.

[0048] As an optional implementation, the hollow shaft 4 includes a first section 41 and a second section 42 connected to each other. The inner diameter of the second section 42 gradually decreases along the direction from the second section 42 to the first section 41 until it is the same as the inner diameter of the first section 41. The end of the second section 42 with a larger inner diameter faces the inside of the roller 1.

[0049] Based on the aforementioned embodiments, in this embodiment, the first section 41 of the hollow shaft 4 is away from the drum 1 and connected to a drying air source (e.g., a heat pump system or an electric heating device), and the end of the second section 42 of the hollow shaft 4 away from the first end is connected to the drum 1. The inner diameter of the second section 42 gradually decreases along the direction from the second section 42 to the first section 41, thereby forming a funnel-shaped drainage structure within the second section 42. This funnel-shaped drainage structure can guide a small amount of water droplets flowing down from the inner wall of the drum 1 back into the drum 1, preventing water from flowing out of the hollow shaft 4.

[0050] As an optional implementation, the inner wall of the drum 1 has a circular cross-section and an axial cross-section that is trapezoidal; the drum opening is located at the small end of the trapezoid; and the water outlet of the first drainage channel is located at the large end of the trapezoid.

[0051] Based on the aforementioned embodiments, in this embodiment, the inner wall of the drum 1 is conical, and the inner diameter of the drum 1 gradually increases from the first end to the second end. This conical structure, combined with the inclined setting, allows the washing water to flow naturally to the second end under the action of gravity, facilitating drainage. The conical inner wall also helps clothes to gather towards the larger end when the drum 1 rotates, preventing them from accumulating at the smaller end of the drum and improving the washing effect.

[0052] As an optional implementation, the lifting rib 2 extends along the axis of the roller 1. The lifting rib 2 includes a first base 21 and a first rib 22 protruding from the top of the first base 21. The first base 21 is plate-shaped, and the bottom of the first base 21 has a first drainage groove 23 recessed towards the top. The groove wall of the first drainage groove 23 has water inlet holes communicating with the inside and outside of the first drainage groove 23. The depth of the first drainage groove 23 gradually increases along the direction from the first end to the second end of the roller 1. The first base 21 is fixed to the inner wall of the roller 1, and the first drainage groove 23 and the inner wall of the roller 1 form a first drainage structure. The first rib 22 has a second drainage structure 24 inside. The water inlet of the second drainage structure 24 is opened on the side and top of the first rib 22, and the water outlet of the second drainage structure 24 is opened in the first drainage groove 23. The diameter of the water inlet of at least part of the second drainage structure 24 gradually increases along the flow direction until the water outlet of the second drainage structure 24. The diameter of the water inlet of the second drainage structure 24 is smaller than the diameter of the water outlet of the second drainage structure 24. The first drainage structure and the second drainage structure 24 together form the first drainage channel.

[0053] Based on the aforementioned embodiments, in this embodiment, the lifting rib 2 is elongated and extends along the inner wall of the roller 1 in the front-to-back direction. The cross-section perpendicular to the length direction of the lifting rib 2 is trapezoidal, that is, the first base 21 is at the bottom and the first protruding rib 22 is at the top. The width of the base is greater than the width of the protruding rib, and the protruding rib is arranged along the centerline of the width of the base. In the cross-section perpendicular to the length direction of the lifting rib 2, the second drainage structure 24 is cross-shaped.

[0054] The bottom of the first base 21 has an upwardly recessed first drainage groove 23. The first drainage groove 23 extends along the length of the base, and the depth of the first drainage groove 23 gradually increases from the first end of the roller 1 to the second end. Under the action of gravity, water flows along the inner wall of the roller 1 to the second end. Gravitational potential energy is converted into kinetic energy, which increases the drainage speed, shortens the drainage time, reduces the amount of residual water, and thus improves the drainage efficiency.

[0055] When the drum 1 rotates at low speed to wash clothes, the lifting ribs 2 lift the clothes to a high point as the drum 1 rotates. The clothes then fall under gravity, simulating hand-beating and enhancing the washing effect. The outlet of the first drain channel is located at the second end. During spin-drying, the centrifugal force of the water is much greater than gravity, causing water to escape from the fabric. Centrifugal force propels the water through the inlets on the side and top of the first rib 22, as well as the inlet holes in the wall of the first drain groove 23, into the first drain channel. Centrifugal force assists in drainage, causing the water to fall into the drain protrusion outside the large end and then exit from the drain valve 3 on the end plate, thus improving the spin-drying rate. The lifting ribs 2 are detachably connected to the drum 1, for example, by screws or clips. Users can periodically remove and clean the drain channel to maintain hygiene and prevent dirt accumulation.

[0056] In some embodiments, the inner wall of the roller 1, which forms a first sub-drainage channel with the first drainage groove 23, is recessed radially outward to increase the rotation radius of the water storage section. This facilitates continuous outward drainage during the water-leading stage, thereby increasing the drainage capacity during dehydration.

[0057] In some embodiments, the first drainage channel has multiple inlets and multiple outlets, for example, arranged in an array or in a straight line, to improve drainage capacity by forming a multi-path drainage network.

[0058] As an optional implementation, the drum-type single-tub washing machine also includes multiple drain components 5. These multiple drain components 5 are installed on the inner wall of the drum 1 and have a second drain channel inside, for guiding water from the inside of the drum 1 to the outside of the drum 1; a drain valve 3 is disposed at the outlet end of the second drain channel of the drain component 5.

[0059] Based on the foregoing embodiments, in this embodiment, to prevent slow drainage, multiple drainage components 5 are provided to increase the drainage speed. It should be noted that small-capacity washing machines may not require drainage components 5, while large-capacity washing machines require them.

[0060] In this embodiment, multiple drain valves 3 are fixed on the end plate of the large end of the roller 1. The multiple drain valves 3 are respectively set in the drainage channels (i.e., the first drainage channel and the second drainage channel) of the lifting rib 2 and the drainage component 5, so as to achieve one-to-one correspondence, and one drain valve 3 controls one drainage channel.

[0061] As an optional implementation, the drainage component 5 extends along the axis of the roller 1. The drainage component 5 includes a second base 51 and a second rib 52 protruding from the top of the second base 51. The second base 51 is plate-shaped, and the bottom of the second base 51 has a second drainage groove 53 recessed towards the top. The groove wall of the second drainage groove 53 has water inlet holes communicating with the inside and outside of the second drainage groove 53. The depth of the second drainage groove 53 gradually increases along the direction from the first end to the second end of the roller 1. The second base 51 is fixed to the inner wall of the roller 1, and the second drainage groove 53 and the inner wall of the roller 1 form a third drainage structure. The second rib 52 has a fourth drainage structure 54 inside. The water inlet of the fourth drainage structure 54 is opened on the side and top of the second rib 52, and the water outlet of the fourth drainage structure 54 is opened in the second drainage groove 53. The third drainage structure and the fourth drainage structure 54 form a second drainage channel.

[0062] Based on the foregoing embodiments, in this embodiment, the structure of the drainage component 5 is similar to that of the aforementioned lifting rib 2, and will not be described in detail here. In other embodiments, the structure of the drainage component 5 is not limited.

[0063] Drain valves 3 are installed at the outlets of the first and second drainage channels, respectively, and are fixed to the outer side of the second end of the drum 1. During drainage or spin-drying, drain valve 3 opens, and water flows out of the drum 1 through the drainage channel. To collect the water discharged from drain valve 3, a water collection ring 9 is made of plastic or metal with a smooth inner wall. The water collection ring 9 is fixed to the floating bracket 7, and its lowest point has a drain outlet. The drain outlet is connected to a drain pump via a hose, and the water is pumped out of the washing machine by the drain pump. During spin-drying, water is thrown out from the drain valve 3 at the large end of the drum 1, and the lowest point of the bottom of the water collection ring 9 guides the water flow to the drain outlet.

[0064] As an optional implementation, the lifting ribs 2 and the drainage components 5 are alternately arranged along the circumference of the roller 1; the height of the lifting ribs 2 protruding radially along the roller 1 is greater than the height of the drainage components 5 protruding radially along the roller 1.

[0065] The lifting rib 2 needs to lift the clothes to a higher position before dropping them, thus requiring a larger radial protrusion. The main task of the drainage component 5 is drainage, so a lower protrusion is sufficient to meet the flow guidance requirements; an excessively high protrusion would actually hinder the smooth tumbling of the clothes. At the same time, the alternating arrangement of high and low protrusions ensures that the drainage channels are evenly distributed circumferentially, so that no matter what angle the roller 1 is at, there is at least one drainage channel located near the lowest point.

[0066] As an optional implementation, the drum-type single-drum washing machine also includes a drive motor 6, a first control unit 10, a second control unit, a wireless power receiving unit, and a wireless power transmitting unit 11; the drive motor 6 is drivenly connected to the hollow shaft 4 and is used to drive the drum 1 to rotate; the first control unit 10 is mounted on the drum 1 and rotates with the drum 1, and the first control unit 10 is also electrically connected to the drain valve 3; the wireless power receiving unit is mounted on the drum 1 and electrically connected to the first control unit 10, and is used to supply power to the first control unit 10; the wireless power transmitting unit 11 is mounted on the water collection ring 9, and is used to connect to an external power source to obtain electrical energy and to transmit electrical energy to the wireless power receiving unit; the second control unit is installed inside the outer casing, and its control terminal is electrically connected to the wireless power transmitting unit 11 and the drive motor 6, and exchanges data with the first control unit 10 wirelessly.

[0067] Based on the foregoing embodiments, in this embodiment, the drive motor 6 is an electromagnetic motor comprising a stator and a rotor. The stator of the drive motor 6 is fixed on the floating bracket 7, and the rotor of the drive motor 6 is fixed to the hollow shaft 4. The connection and positional relationship between the drive motor 6 and the hollow shaft 4 are existing technologies and will not be described further here. The wireless power supply receiving unit is integrated with the first control unit 10. The wireless power supply receiving unit can also be installed inside or outside the water collection ring 9, or it can be integrated with the water collection ring 9.

[0068] The second control unit is the main control unit of the washing machine, responsible for coordinating the operation of the entire washing machine, including washing program control, motor drive, power supply management, and data interaction with rotating parts. In contrast, the first control unit 10 is a subordinate unit, rotating with the drum and performing specific tasks such as drain valve drive and water level detection. More specifically, the second control unit is installed inside the housing, electrically connected to the wireless power transmission unit 11 and the drive motor 6, and exchanges data with the first control unit 10 via wireless communication, such as Bluetooth. The second control unit receives water level detection data from the first control unit 10 and sends drain valve opening / closing commands to the first control unit 10. The second control unit is electrically connected to the drive motor, sending control signals such as speed, direction, and start / stop to the motor. The second control unit sends sine waves or other energy transmission signals to the wireless power transmission unit 11. The wireless power supply preferably uses the principle of electromagnetic induction, with the transmitting coil and receiving coil parallel to each other outside the hollow shaft 4. The transmitting coil is fixed to the floating bracket 7, and the receiving coil is fixed to the second end plate of the drum 1. Its working principle is similar to that of wireless charging for mobile phones.

[0069] As an optional implementation, the drum-type single-tub washing machine also includes a plurality of water level detection units 12, which are evenly arranged at the second end of the drum 1 along the circumference of the drum 1.

[0070] Based on the foregoing embodiments, in this embodiment, the water level detection unit 12 can employ a capacitive or inductive sensor to detect the water level when the drum 1 is stationary or rotating at low speed. In some embodiments, the embodiments of this application can employ detergent metering and premixing devices from the prior art. For example, a detergent adding structure, including a liquid storage mechanism, a metering pump, and a mixing chamber, can be provided on the water inlet pipe, where the detergent and water are premixed before entering the drum 1.

[0071] The drying air source in this embodiment can be a heat pump system, the structure and control method of which can refer to the prior art. For example, a heat pump system includes a compressor, a main condenser, a throttling device, an evaporator, etc., and the load is adjusted by an auxiliary fan. The refrigerant undergoes a phase change in the evaporator and condenser, the water-containing air is rapidly dehumidified in the evaporator, and the dehumidified cold air is then heated to a set temperature in the condenser and sent into the drum. The heat exchange efficiency is high, achieving efficient dehydration and low-temperature drying.

[0072] The drying circulation system of this application embodiment can be equipped with a lint filter device that is easy and quick to clean, used to filter lint from the circulating air drawn from the drum.

[0073] In this embodiment, water is heated in the water inlet pipe to provide warm water for washing.

[0074] In some embodiments, the drum-type single-drum washing machine further includes a balance ring 8, which is mounted on the drum opening of the drum 1. The balance ring 8 is configured with an appropriate weight to balance the vibration of the drum 1 during high-speed spin-drying.

[0075] In some embodiments, the door is rotatably connected to the outer casing, and when the door is in the closed position, it covers the cylinder opening and does not rotate with the roller 1.

[0076] The casing is equipped with an exhaust port, a water inlet, and a liquid inlet. The water inlet is used to connect to a water source, and the liquid inlet is used to add detergent.

[0077] The inner glass of the door differs slightly from that of existing washing machines. The inner side of the door protrudes inward, forming a flow guide structure. There is a groove above it to allow the water inlet pipe to pass through, and a groove is set in the lower arc transition to prevent water from flowing out of the drum along the arc. The water inlet can be designed as a fan-shaped nozzle to make the water flow form a specific jet pattern and spray it evenly on the clothes.

[0078] The working process of the washing machine in the embodiment of this application is described below:

[0079] Water intake stage: The water inlet valve is opened, and the water level detection unit 12 monitors the water level in the drum 1 in real time. When the set value is reached, the water inlet valve is closed.

[0080] Washing stage: Drive motor 6 drives drum 1 to rotate at a low speed, and lifting ribs 2 continuously lift and tumble the clothes to achieve washing. The washing water is always kept inside drum 1, with no water remaining in the outer drum.

[0081] Drainage stage: The drain pump starts, and at the same time, the second control unit sends a command to the first control unit 10 via wireless communication to open the drain valve 3. The washing water in the drum 1 enters the drain channel through the water inlet hole of the lifting rib 2, flows along the drain groove to the second end of the drum 1, is discharged from the drain valve 3, is collected by the water collection ring 9 and then pumped out by the drain pump.

[0082] Dehydration stage: Drive motor 6 drives roller 1 to rotate at high speed. Under the action of centrifugal force, the water in the clothes is thrown out and discharged into the water collection ring 9 through the drainage channel of lifting rib 2. Drain valve 3 remains open during the dehydration process.

[0083] Drying Stage: The heat pump system starts, and the compressor generates hot air, which enters the drum 1 through the hollow shaft 4. The hot air becomes humidified after passing over the clothes, and is discharged through the gap between the door and the drum 1. It is then drawn in by the air collection ring, filtered by the lint filter, and sent to the heat pump system for condensation, dehydration, and reheating, forming a stable drying cycle. Throughout the process, because the air inlet is at the large end of the drum 1 and the air outlet is at the small end, the clothes are suspended in a state as they pass through the hot airflow and are dehydrated and dried.

[0084] In the description of this application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0085] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0086] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0087] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0088] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A drum-type single-tub washing machine, characterized in that, include: The outer casing is placed on the ground; The roller (1) is rotatably installed inside the outer shell. The side wall of the roller (1) is a closed structure. The axis of the roller (1) intersects the ground. The first end of the roller (1) is higher than the second end. The first end of the roller (1) has a cylinder opening. Multiple lifting ribs (2) are installed on the inner wall of the roller (1) and have a first drainage channel inside to guide the water inside the roller (1) to the outside of the roller (1); A drain valve (3) is provided at the outlet end of the first drain channel of the lifting rib (2).

2. The drum-type single-tub washing machine according to claim 1, characterized in that, Also includes: A hollow shaft (4) is connected to the drum (1) and is used to drive the drum (1) to rotate under the driving action of the drive motor (6). The hollow shaft (4) is also connected to the drum (1) and is used to deliver hot air for drying into the drum (1).

3. The drum-type single-tub washing machine according to claim 2, characterized in that, The hollow shaft (4) includes a first section (41) and a second section (42) connected to each other. The inner diameter of the second section (42) gradually decreases along the direction from the second section (42) to the first section (41) until it is the same as the inner diameter of the first section (41). The end of the second section (42) with the larger inner diameter faces the inside of the roller (1).

4. The drum-type single-tub washing machine according to claim 1, characterized in that, The inner wall of the roller (1) has a circular cross-section and an axial cross-section that is trapezoidal. The opening of the cylinder is located at the small end of the trapezoid; The outlet of the first drainage channel is located at the large end of the trapezoid.

5. The drum-type single-tub washing machine according to claim 1, characterized in that, The lifting rib (2) extends along the axis of the roller (1), and the lifting rib (2) includes a first base (21) and a first rib (22) protruding from the top of the first base (21). The first base (21) is plate-shaped, and the bottom of the first base (21) has a first drainage groove (23) that is recessed towards the top. The groove wall of the first drainage groove (23) is provided with a water inlet hole that connects the inside and outside of the first drainage groove (23). The depth of the first drainage groove (23) gradually increases along the direction from the first end to the second end of the roller (1). The first base (21) is fixed to the inner wall of the roller (1), and the first drainage groove (23) and the inner wall of the roller (1) form a first drainage structure. The first rib (22) has a second drainage structure (24) inside. The inlet of the second drainage structure (24) is opened on the side and top of the first rib (22), and the outlet of the second drainage structure (24) is opened in the first drainage groove (23). The first drainage structure and the second drainage structure (24) constitute the first drainage channel.

6. The drum-type single-tub washing machine according to claim 2, characterized in that, Also includes: Multiple drainage components (5) are installed on the inner wall of the roller (1) and have a second drainage channel inside, for guiding water inside the roller (1) to the outside of the roller (1); The drain valve (3) is also provided at the outlet end of the second drain channel of the drain component (5).

7. The drum-type single-tub washing machine according to claim 6, characterized in that, The drainage component (5) extends along the axis of the roller (1), and the drainage component (5) includes a second base (51) and a second rib (52) protruding from the top of the second base (51). The second base (51) is plate-shaped, and the bottom of the second base (51) has a second drainage groove (53) that is recessed towards the top. The groove wall of the second drainage groove (53) is provided with a water inlet hole that connects the inside and outside of the second drainage groove (53). The depth of the second drainage groove (53) gradually increases along the direction from the first end to the second end of the roller (1). The second base (51) is fixed to the inner wall of the roller (1), and the second drainage groove (53) and the inner wall of the roller (1) form a third drainage structure. The second rib (52) has a fourth drainage structure (54) inside. The inlet of the fourth drainage structure (54) is opened on the side and top of the second rib (52), and the outlet of the fourth drainage structure (54) is opened in the second drainage groove (53). The third drainage structure and the fourth drainage structure (54) together form the second drainage channel.

8. The drum-type single-tub washing machine according to claim 6 or 7, characterized in that, The lifting ribs (2) and the drainage components (5) are alternately arranged along the circumference of the roller (1); The height of the lifting rib (2) protruding radially along the roller (1) is greater than the height of the drainage component (5) protruding radially along the roller (1).

9. The drum-type single-tub washing machine according to claim 8, characterized in that, Also includes: A drive motor (6) is connected to the hollow shaft (4) to drive the roller (1) to rotate; The first control unit (10) is mounted on the roller (1) and rotates with the roller (1). The first control unit (10) is also electrically connected to the drain valve (3). A wireless power supply receiving unit is installed on the roller (1) and electrically connected to the first control unit (10) for supplying power to the first control unit (10); A wireless power supply transmitting unit (11) is installed on a water collection ring (9) for connecting to an external power source to obtain power and for transmitting power to the wireless power supply receiving unit; The second control unit is installed inside the housing. Its control terminal is electrically connected to the wireless power supply transmitter (11) and the drive motor (6), and exchanges data with the first control unit (10) via wireless communication.

10. The drum-type single-tub washing machine according to claim 1, characterized in that, Also includes: Multiple water level detection units (12) are evenly arranged at the second end of the drum (1) along the circumference of the drum (1).

Images