Outer tube, washing apparatus, and washing apparatus control method

Abstract

This invention belongs to the field of washing technology, and discloses an outer drum, a washing device, and a control method for the washing device. The outer drum includes an outer drum body, a scraper structure, and an adjustment device. The scraper structure is disposed within the outer drum body; the adjustment device is disposed within the outer drum body and connected to the scraper structure. The adjustment device is used to drive the scraper structure to rotate and adjust its position according to the rotation speed of the inner drum of the washing device, so as to move closer to or further away from the center of the outer drum body. When the scraper structure is closer to the center of the outer drum body, its effective area for blocking water flow and foam is larger, improving the interception effect of water flow and foam, and further improving the defoaming efficiency, preventing the water level from being too high due to the presence of foam, thereby prolonging the dehydration time; when the scraper structure is further away from the center of the outer drum body, it can maintain a sufficient gap with the inner drum to avoid the inner drum being scraped by the scraper structure during high-speed rotation, and at the same time avoid the scraper structure being broken, improving the operational safety of the equipment.

Description

Technical Field

[0001] This invention relates to the field of washing technology, and in particular to an outer drum, a washing device, and a method for controlling the washing device. Background Technology

[0002] Front-loading washing machines achieve their washing purpose by lifting and tumbling clothes. They generally have only one water inlet and one drain outlet. During the washing process, when too much detergent is used or a high-foaming detergent is used, the agitation and water flow impacting the detergent cause continuous contact between air and detergent, generating a large amount of foam inside the drum. As the washing process continues, especially during the high-speed rotation of the inner drum in the spin-drying process, the foam in the inner drum is difficult to break down and will increase. This may not only cause the foam to overflow from the washing machine, affecting the washing machine's performance and user experience, and wasting detergent and water resources, but also cause problems such as affecting the machine's water level judgment and prolonging the spin-drying time due to the high amount of foam.

[0003] In order to eliminate foam during the washing process, the outer drum of existing drum washing machines has grooves and filter plates installed in the grooves. This allows the foam to be concentrated in the grooves and filtered out by the filter plates, thus achieving defoaming. However, the defoaming efficiency is still limited, and the filter plates are prone to rubbing against the rotating inner drum, causing problems such as the filter plates breaking or the inner drum being scratched.

[0004] Therefore, there is an urgent need for an outer drum, washing equipment, and a method for controlling the washing equipment. Summary of the Invention

[0005] The purpose of this invention is to provide an outer drum, a washing device, and a washing device control method, which can effectively improve defoaming efficiency, avoid prolonged dehydration time or incomplete dehydration, and prevent the inner drum from being scratched during rotation, thereby improving the safety of equipment operation.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Firstly, an outer cylinder is provided, comprising:

[0008] outer cylinder;

[0009] A scraper structure is provided inside the outer cylinder;

[0010] An adjustment device is provided on the outer drum body and connected to the scraper structure. The adjustment device is configured to drive the scraper structure to rotate and adjust its position according to the rotation speed of the inner drum of the washing equipment, so as to move closer to or away from the center of the outer drum body.

[0011] In the above technical solution, by setting up a scraper structure, when the inner drum rotates, the scraper structure can prevent water and foam from continuing to rise with the inner drum, effectively intercepting foam and wastewater, reducing the amount of foam residue on the drum wall. At the same time, the impact force generated by the washing water hitting the scraper structure can also play a certain role in defoaming, effectively removing foam during the washing process. By setting up an adjustment device, the position of the scraper structure can be rotated and adjusted so that the scraper structure is closer to or further away from the center of the outer drum. When the scraper structure is closer to the center of the outer drum, its effective area for blocking water flow and foam is larger, improving the interception effect of water flow and foam, and further improving the defoaming efficiency, preventing the water level from being too high due to the presence of foam, thereby prolonging the dehydration time. When the scraper structure is further away from the center of the outer drum, it can maintain a sufficient distance from the inner drum to avoid the inner drum being scraped by the scraper structure during high-speed rotation, and at the same time, to prevent the scraper structure from being broken, improving the safety of equipment operation.

[0012] As an optional embodiment of the outer cylinder provided by the present invention, the adjustment device includes:

[0013] The power mechanism is located in the outer cylinder body;

[0014] A drive gear is connected to the output end of the power mechanism for rotating under the drive of the power mechanism.

[0015] A transmission gear meshes with the drive gear and is connected to the scraper structure. The transmission gear, driven by the drive gear, causes the scraper structure to rotate relative to the outer cylinder.

[0016] As an optional embodiment of the outer cylinder provided by the present invention, the inner wall of the outer cylinder body is provided with a drainage groove, and the scraper structure is at least partially spaced from the bottom wall of the drainage groove.

[0017] In the above technical solution, the drainage trough can store residual water and foam after washing. With the scraper structure set at intervals with the bottom wall of the drainage trough, wastewater and foam can be blocked in the space enclosed between the drainage trough and the scraper structure, which plays a better role in intercepting foam and wastewater.

[0018] As an optional embodiment of the outer cylinder provided by the present invention, the outer cylinder body includes a cylinder body and a drainage section; the side wall of the cylinder body is provided with an opening, the drainage section defines the drainage groove and is connected to the cylinder body, and the drainage groove is directly opposite the opening;

[0019] The scraper structure is connected at the junction of the cylinder body and the drainage section; and / or, the scraper structure is arc-shaped, and the arc of the scraper structure coincides with the circle of the cylinder body.

[0020] Alternatively, the scraper structure is connected to the inner wall of the cylinder body;

[0021] Alternatively, the scraper structure is connected to the inner wall of the drainage channel.

[0022] As an optional solution for the outer cylinder provided by the present invention, the scraper structure is provided with an installation port, and a filter screen is embedded in the installation port.

[0023] In the above technical solution, by setting up a filter screen, water flow can be allowed to pass through while filtering out foam, thus eliminating foam.

[0024] In a second aspect, a washing device is provided, including a housing, an inner drum, and an outer drum as described above; the outer drum is disposed within the housing, and the inner drum is rotatably disposed within the outer drum;

[0025] The washing equipment also includes a spray rinsing module, the spray end of which is connected to the inside of the inner drum and / or the gap between the inner drum and the outer drum.

[0026] Thirdly, a washing equipment control method is provided, applied to the washing equipment described above, the washing equipment control method comprising:

[0027] When the amount of foam inside the outer cylinder exceeds the standard, the defoaming program is activated;

[0028] Control the spray rinsing module to spray and rinse;

[0029] The inner cylinder is controlled to rotate, and the scraper structure is controlled to rotate and adjust its position according to the rotation speed of the inner cylinder.

[0030] As an optional solution to the washing equipment control method provided by the present invention, controlling the rotation of the inner drum and adjusting the position of the scraper structure according to the rotation speed of the inner drum includes:

[0031] The inner drum is controlled to rotate at a first speed r1 for a first preset time t1, and the drain pump of the washing equipment is controlled to drain water, and the adjustment device is controlled to adjust the scraper structure to a first position;

[0032] The inner cylinder is controlled to rotate at a second speed r2 for a second preset time t2, and the drainage pump is controlled to drain water. The adjustment device is controlled to adjust the scraper structure to a second position.

[0033] Wherein, the first rotational speed r1 is less than the second rotational speed r2, and the first position is closer to the center of the outer cylinder than the second position.

[0034] As an optional solution to the washing equipment control method provided by the present invention, the step of initiating a defoaming program when the amount of foam in the outer drum exceeds the standard further includes:

[0035] When the dehydration process starts, the initial water level height H1 is detected;

[0036] Control the drainage pump to operate for a third preset time t3, and detect the water level height H2 after drainage;

[0037] Based on the third preset duration t3, the drainage volume of the drainage pump per unit time, and the initial water level height H1, the first theoretical water level height H01 is obtained;

[0038] If the water level H2 after drainage is higher than the first theoretical water level H01, and the difference exceeds the first threshold, then the amount of foam in the outer cylinder is determined to be excessive.

[0039] As an optional solution to the washing equipment control method provided by the present invention, after the defoaming process is completed, the method further includes:

[0040] Detect the current water level height H3;

[0041] The second theoretical water level H02 is obtained based on the spray water volume of the spray rinsing module, the drainage volume of the drainage pump during the defoaming process, and the first theoretical water level height H01.

[0042] If the current water level H3 is higher than the second theoretical water level H02, and the difference exceeds the second threshold, then the defoaming procedure is repeated.

[0043] The beneficial effects of this invention are:

[0044] The purpose of this invention is to provide an outer drum, a washing device, and a control method for the washing device. By setting a scraper structure, when the inner drum rotates, the scraper structure can prevent water and foam from following the rotation of the inner drum and continuing to rise, effectively intercepting foam and wastewater, reducing the amount of foam residue on the drum wall. At the same time, the impact force generated by the washing water hitting the scraper structure also plays a certain role in defoaming, effectively removing foam during the washing process. By setting an adjustment device, the position of the scraper structure can be rotated and adjusted so that the scraper structure is closer to or further away from the center of the outer drum. When the scraper structure is closer to the center of the outer drum, its effective area for blocking water flow and foam is larger, improving the interception effect of water flow and foam, and further improving the defoaming efficiency, preventing the water level from being too high due to the presence of foam, thereby prolonging the dehydration time. When the scraper structure is further away from the center of the outer drum, a sufficient distance can be maintained between it and the inner drum to avoid the inner drum being scraped by the scraper structure during high-speed rotation, and at the same time to prevent the scraper structure from being broken, improving the safety of equipment operation. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0046] Figure 1 This is a first view of the outer cylinder provided in a specific embodiment of the present invention;

[0047] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0048] Figure 3 This is a second view of the outer cylinder provided in a specific embodiment of the present invention;

[0049] Figure 4 This is a first flowchart of the washing equipment control method provided in a specific embodiment of the present invention;

[0050] Figure 5 This is a second flowchart of the washing equipment control method provided in a specific embodiment of the present invention.

[0051] In the picture:

[0052] 100. Outer cylinder;

[0053] 1. Outer cylinder body; 2. Scraper structure; 3. Adjustment device;

[0054] 10. Mounting slot; 11. Cylinder body; 12. Drainage section; 121. Drainage channel;

[0055] 31. Power mechanism; 32. Drive gear; 33. Transmission gear. Detailed Implementation

[0056] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0057] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0060] In this embodiment, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0061] In the embodiments of the present invention, the same reference numerals denote the same parts, and for the sake of brevity, detailed descriptions of the same parts are omitted in different embodiments.

[0062] Example 1

[0063] like Figure 1 As shown, this embodiment provides an outer cylinder 100, which can effectively improve the defoaming efficiency, avoid prolonging the dehydration time or incomplete dehydration, and prevent the inner cylinder from being scratched during rotation, thereby improving the safety of equipment operation.

[0064] Specifically, see Figure 1The outer drum 100 includes an outer drum body 1, a scraper structure 2, and an adjustment device 3. The scraper structure 2 is located inside the outer drum body 1; the adjustment device 3 is located in the outer drum body 1 and connected to the scraper structure 2. The adjustment device 3 is configured to drive the scraper structure 2 to rotate and adjust its position according to the rotation speed of the inner drum of the washing equipment, so as to move closer to or further away from the center of the outer drum body 1.

[0065] One end of the scraper structure 2 is a rotating end, and the other end can move closer to or further away from the center of the outer cylinder 1 under the drive of the adjusting device 3.

[0066] The outer drum 100 provided in this application embodiment, by setting a scraper structure 2, when the inner drum rotates, the presence of the scraper structure 2 can prevent water, foam and other substances from rotating with the inner drum and continuing to rise, thereby effectively intercepting foam and wastewater and reducing the amount of foam residue on the drum wall. At the same time, the impact force generated by the washing water hitting the scraper structure 2 can also play a certain role in defoaming and effectively remove foam during the washing process.

[0067] The position of the scraper structure 2 can be adjusted by rotating the adjustment device 3, so that the scraper structure 2 is closer to or further away from the center of the outer cylinder 1. When the scraper structure 2 is closer to the center of the outer cylinder 1, its effective area for blocking water flow and foam is larger, improving the interception effect of water flow and foam, and further improving the defoaming efficiency, preventing the water level from being too high due to the presence of foam, thereby prolonging the dehydration time; when the scraper structure 2 is further away from the center of the outer cylinder 1, it can maintain a sufficient gap with the inner cylinder, so as to avoid the inner cylinder being scraped by the scraper structure 2 during high-speed rotation, and at the same time, to prevent the scraper structure 2 from being broken, thus improving the safety of equipment operation.

[0068] like Figure 1 and Figure 2 As shown, the adjustment device 3 includes a power mechanism 31, a drive gear 32, and a transmission gear 33. The power mechanism 31 is located on the outer cylinder 1. The drive gear 32 is connected to the output end of the power mechanism 31 and is used to rotate under the drive of the power mechanism 31. The transmission gear 33 meshes with the drive gear 32 and is connected to the scraper structure 2. The transmission gear 33 causes the scraper structure 2 to rotate relative to the outer cylinder 1 under the drive of the drive gear 32.

[0069] When the position of scraper structure 2 is adjusted, the control power mechanism 31 is started. The power mechanism 31 drives the transmission gear 33 to rotate through the drive gear 32. The transmission gear 33 then drives the scraper structure 2 connected to it to rotate, thereby realizing position adjustment, so that it is closer to the inner cylinder or further away from the inner cylinder.

[0070] It is understandable that there can be one drive gear 32, or multiple gears meshing sequentially. The first of the multiple sequentially meshing drive gears 32 is connected to the output end of the power mechanism 31, and the last one meshes with the transmission gear 33. Through multi-stage gear transmission, speed reduction can be achieved, avoiding excessive rotation speed of the scraper structure 2 and enabling fine adjustment.

[0071] For example, the power mechanism 31 is a miniature rotary motor, the housing of which is mounted on the outer cylinder 1.

[0072] Optionally, such as Figure 2 As shown, the outer wall of the outer cylinder 1 is provided with a mounting groove 10. The drive gear 32 and the transmission gear 33 are at least partially located in the mounting groove 10, which can hide the gears and reduce the space occupied, making the structural layout more reasonable.

[0073] The transmission gear 33 is exemplarily a sector gear. The rotating end of the scraper structure 2 is provided with a rotating shaft, which is coaxially connected to the sector gear. When the sector gear is in operation, it drives the scraper structure 2 to rotate through the rotating shaft. By setting the sector gear, the space occupied by the adjustment device 3 can be reduced, and it can be better connected to the scraper structure 2 inside the outer cylinder 1. During rotation, the two sides of the sector gear will not interfere with the outer cylinder 1, which is a reasonable design.

[0074] Furthermore, the rotating shaft and the outer cylinder 1 are sealed and rotated together to prevent water leakage between the outer cylinder 1 and the rotating shaft.

[0075] See Figure 1 and Figure 3 The inner wall of the outer cylinder 1 is recessed with a drainage groove 121, and the scraper structure 2 is at least partially spaced from the bottom wall of the drainage groove 121. When the outer cylinder 100 is installed into the washing equipment, the drainage groove 121 is at the bottom, which can store residual water and foam after washing. With the scraper structure 2 spaced from the bottom wall of the drainage groove 121, wastewater and foam can be blocked in the space enclosed between the drainage groove 121 and the scraper structure 2, which plays a better role in intercepting foam and wastewater.

[0076] See Figure 3The outer cylinder 1 includes a main body 11 and a drainage section 12. An opening is provided on the side wall of the main body 11, opposite to the center of the main body 11. The drainage section 12 defines a drainage groove 121 and connects to the main body 11, with the drainage groove 121 directly opposite the opening of the main body 11. In this embodiment, a scraper structure 2 is connected to the junction of the main body 11 and the drainage section 12, extending above the drainage groove 121 to maximize the space for intercepting wastewater and foam. Furthermore, the scraper structure 2 is arc-shaped, and the arc of the scraper structure 2 coincides with the circle of the main body 11, adapting it to the shape of the inner cylinder and preventing it from scraping against the inner cylinder when it rotates.

[0077] In some other embodiments, the scraper structure 2 may also be attached to the inner wall of the cylinder body 11 and extend above the drainage groove 121.

[0078] Alternatively, in some other embodiments, the scraper structure 2 can also be connected to the inner wall of the drainage channel 121, which can also serve to intercept foam.

[0079] Example 2

[0080] This embodiment provides an outer cylinder 100, which is a further improvement on the first embodiment.

[0081] In this embodiment, an installation port is provided on the scraper structure 2, and a filter screen is embedded in the installation port. By setting the filter screen, water flow is allowed to pass through while filtering out foam, thereby eliminating foam.

[0082] Example 3

[0083] This embodiment provides a washing device, including a housing, an inner drum, and an outer drum 100 as described in any of the above embodiments; the outer drum 100 is disposed in the housing, and the inner drum is rotatably disposed inside the outer drum 100.

[0084] The washing equipment also includes a spray rinsing module, the spray end of which is connected to the inside of the inner drum and / or the gap between the inner drum and the outer drum 100. During the rinsing and dehydration stage, water can be sprayed into the inside of the inner drum and / or the gap between the inner drum and the outer drum 100 through the spray rinsing module to rinse and clean the foam in the inner drum and the foam in the gap between the inner drum and the outer drum 100.

[0085] Specifically, the spray rinsing module includes a spray pipe and nozzles. One end of the spray pipe is connected to the water inlet pipe via a water inlet solenoid valve, and the other end is connected to one or more nozzles. At least one nozzle is installed on the window gasket of the washing equipment for spraying water onto the clothes in the inner drum. If multiple nozzles are provided, other nozzles can be connected to the gap between the inner drum and the outer drum 100 to rinse and clean the outer wall of the inner drum and the inner wall of the outer drum 100.

[0086] Example 4

[0087] like Figure 4 As shown, this embodiment provides a washing equipment control method, applied to the washing equipment described above. The washing equipment control method includes:

[0088] When the amount of foam inside the outer cylinder 100 exceeds the standard, the defoaming program is activated;

[0089] Control the spray rinsing module to spray rinsing;

[0090] Control the rotation of the inner cylinder, and adjust the position of the scraper structure 2 according to the rotation speed of the inner cylinder.

[0091] Specifically, the defoaming process is applied during the rinsing and dehydration stages. The spray from the rinsing module, combined with the rotation of the inner drum, washes away residual foam from the inner drum wall and clothing. The scraper structure 2 intercepts the foam, preventing it from being lifted up with the inner drum's rotation, thus accelerating foam discharge and removal. When the scraper structure 2 is closer to the center of the outer drum 1, its effective area for blocking water flow and foam is larger, improving the interception effect and further enhancing defoaming efficiency. This prevents excessively high water levels due to foam, which would prolong dehydration time. When the scraper structure 2 is further away from the center of the outer drum 1, it maintains a sufficient distance from the inner drum, preventing the inner drum from being scraped by the scraper structure 2 during rotation and avoiding breakage of the scraper structure 2, thus improving equipment operational safety.

[0092] like Figure 5 As shown, the step of "starting the defoaming program when the amount of foam inside the outer cylinder 100 exceeds the standard" includes the following:

[0093] When the dehydration process starts, the initial water level height H1 is detected;

[0094] Control the drainage pump to operate for a third preset time t3, and detect the water level height H2 after drainage;

[0095] Based on the third preset duration t3, the drainage volume of the drainage pump per unit time, and the initial water level height H1, the first theoretical water level height H01 is obtained;

[0096] If the water level H2 after drainage is higher than the first theoretical water level H01, and the difference exceeds the first threshold, it is determined that the amount of foam in the outer cylinder 100 exceeds the standard, and the defoaming program is started; otherwise, the defoaming program is not started, and only the ordinary dehydration program is executed.

[0097] Specifically, based on the third preset duration t3 and the drainage volume of the drainage pump per unit time, the total drainage volume of the drainage pump within time t3 can be obtained. Based on this total drainage volume and the initial water level height H1, the first theoretical water level height H01 inside the outer cylinder 100 after drainage time t3 can be obtained. That is, after drainage time t3, the water level should theoretically drop to H01.

[0098] If the difference between the detected water level height H2 after drainage and the first theoretical water level height H01 exceeds the first threshold, it indicates that the water level has not dropped to the expected level. The water level detected by the system is too high due to the presence of accumulated foam, and it is judged that there is too much foam residue.

[0099] If foam is present, the foam will gradually accumulate and thicken as the water level drops during the drainage process. If the foam accumulation is too thick, it will affect the equipment's judgment of the water level.

[0100] For example, the water level can be detected and obtained by a liquid level detection sensor installed in the outer cylinder 100.

[0101] Alternatively, the initial water level at the time of water intake during the rinsing stage can be directly obtained as the initial water level height H1 mentioned above. The third preset duration t3 in the program is fixed, and the drainage volume of the drain pump per unit time is fixed. Therefore, the first theoretical water level height H01 can be pre-set in the program.

[0102] For example, the third preset duration t3 is 1 min to 7 min, such as 2 min, 3 min, 5 min, etc., but is not limited to the range and values ​​listed.

[0103] For example, the first threshold is 0.5cm to 4cm, such as 0.5cm, 1cm, 1.5cm, 2cm, etc., but is not limited to the values ​​listed.

[0104] For example, if the initial water level H1 is 20cm, the first theoretical water level H01 is 5cm, and the detected water level H2 after drainage is 8cm, exceeding the first threshold by 1cm, it is determined that there is too much foam residue.

[0105] like Figure 5 As shown, "controlling the rotation of the inner cylinder and adjusting the position of the scraper structure 2 according to the rotation speed of the inner cylinder" includes:

[0106] The inner drum is controlled to run at a first speed r1 for a first preset time t1, and the control adjustment device 3 is controlled to adjust the scraper structure 2 to the first position; during this period, the drain pump of the washing equipment is controlled to drain water.

[0107] The inner drum is controlled to rotate at a second speed r2 for a second preset time t2, and the adjustment device 3 is controlled to adjust the scraper structure 2 to the second position; during this period, the drain pump of the washing equipment is controlled to drain water.

[0108] Among them, the first rotational speed r1 is less than the second rotational speed r2, and the first position is closer to the center of the outer cylinder 100 than the second position.

[0109] When the inner cylinder rotates at a lower first speed r1, the scraper structure 2 is adjusted to a first position closer to the center of the outer cylinder 1. This increases the effective area for blocking water flow and foam, improving the interception effect and allowing foam between the inner and outer cylinders 100 and inside the inner cylinder to be flushed into the drainage trough 121, further improving defoaming efficiency. When the inner cylinder rotates at a higher second speed r2, the scraper structure 2 is adjusted to a second position further away from the center of the outer cylinder 1. This maintains a sufficient distance between the scraper structure 2 and the inner cylinder, preventing the inner cylinder from being scraped by the scraper structure 2 during rotation and improving equipment operating safety.

[0110] For example, the first rotational speed r1 ranges from 20 rpm to 50 rpm. The second rotational speed r2 ranges from 50 rpm to 200 rpm. The first preset duration t1 ranges from 30 seconds to 3 minutes; the second preset duration t2 ranges from 1 minute to 5 minutes. Of course, the values ​​of r1, r2, t1, and t2 are not limited to the ranges listed above.

[0111] Furthermore, after the spray rinsing module begins to spray water for a fourth preset duration t4, the inner cylinder begins to rotate at a first rotational speed r1. For example, the fourth preset duration t4 is 30 seconds. Before the inner cylinder begins to accelerate to the second rotational speed r2, the spray rinsing module begins to spray water for a fifth preset duration t5. For example, the fifth preset duration t5 is 15 seconds to 30 seconds.

[0112] See Figure 5 After the defoaming process is completed, the inner drum stops rotating, and the drain pump and spray rinsing module both cease operation. The washing equipment control method also includes:

[0113] Detect the current water level height H3;

[0114] The second theoretical water level H02 is obtained based on the spray water volume of the spray flushing module, the drainage volume of the drainage pump during the defoaming process, and the first theoretical water level height H01.

[0115] If the current water level H3 is higher than the second theoretical water level H02, and the difference exceeds the second threshold, then the defoaming procedure will be repeated.

[0116] The spray water volume of the spray rinsing module can be obtained by the flow meter at the inlet pipe. The net drainage volume can be obtained by adding the inlet water volume to the drainage volume of the drain pump during the defoaming process. The second theoretical water level H02 can be obtained based on the net drainage volume and the first theoretical water level height H01; that is, theoretically, the second theoretical water level height H02 should be reached after defoaming.

[0117] If the detected current water level height H3 is higher than H02, and the difference exceeds the second threshold, it indicates that the water level has not dropped to the expected water level height H02, and the difference is too large relative to the second theoretical water level height H02. Therefore, it is determined that there is still too much foam, and the above defoaming procedure is repeated.

[0118] For example, the defoaming procedure can be limited to a maximum of 3 to 5 times.

[0119] When the residual foam is determined to be low, or when the number of times the defoaming program is executed reaches its maximum, the rinsing and dehydration process is completed, and the next step continues until the washing is finished and the machine is turned off.

[0120] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An outer cylinder, characterized in that, include: Outer cylinder body (1); The scraper structure (2) is located inside the outer cylinder body (1); An adjustment device (3) is provided on the outer drum body (1) and connected to the scraper structure (2). The adjustment device (3) is configured to drive the scraper structure (2) to rotate and adjust its position according to the rotation speed of the inner drum of the washing equipment, so as to be closer to or further away from the center of the outer drum body (1).

2. The outer cylinder according to claim 1, characterized in that, The adjustment device (3) includes: A power mechanism (31) is provided in the outer cylinder (1); A drive gear (32) is connected to the output end of the power mechanism (31) for rotating under the drive of the power mechanism (31); The transmission gear (33) meshes with the drive gear (32) and is connected to the scraper structure (2). Under the drive of the drive gear (32), the transmission gear (33) causes the scraper structure (2) to rotate relative to the outer cylinder (1).

3. The outer cylinder according to claim 1, characterized in that, The inner wall of the outer cylinder (1) is recessed with a drainage groove (121), and the scraper structure (2) is at least partially spaced from the bottom wall of the drainage groove (121).

4. The outer cylinder according to claim 3, characterized in that, The outer cylinder body (1) includes a cylinder body (11) and a drainage section (12); the side wall of the cylinder body (11) is provided with an opening, the drainage section (12) defines the drainage groove (121) and is connected to the cylinder body (11), and the drainage groove (121) is directly opposite the opening; The scraper structure (2) is connected at the junction of the cylinder body (11) and the drainage part (12); and / or, the scraper structure (2) is arc-shaped, and the arc of the scraper structure (2) coincides with the circle of the cylinder body (11); Alternatively, the scraper structure (2) is connected to the inner wall of the cylinder body (11); Alternatively, the scraper structure (2) is connected to the inner wall of the drainage channel (121).

5. The outer cylinder according to any one of claims 1-4, characterized in that, The scraper structure (2) is provided with an installation port, and a filter screen is embedded in the installation port.

6. A washing device, characterized in that, It includes a housing, an inner cylinder, and an outer cylinder as described in any one of claims 1-5; the outer cylinder (100) is disposed within the housing, and the inner cylinder is rotatably disposed within the outer cylinder (100); The washing equipment also includes a spray rinsing module, the spray end of which is connected to the inside of the inner drum and / or the gap between the inner drum and the outer drum (100).

7. A method for controlling a washing machine, characterized in that, The washing equipment control method, applied to the washing equipment as described in claim 6, includes: When the amount of foam inside the outer cylinder (100) exceeds the standard, the defoaming procedure is initiated; Control the spray rinsing module to spray and rinse; Control the rotation of the inner cylinder, and control the rotation of the scraper structure (2) to adjust its position according to the rotation speed of the inner cylinder.

8. The washing equipment control method according to claim 7, characterized in that, The control of the inner cylinder's rotation, and the control of the scraper structure (2)'s rotation and position adjustment according to the inner cylinder's rotational speed, includes: Control the inner drum to run at a first speed r1 for a first preset time t1, control the drain pump of the washing equipment to drain water, and control the adjustment device (3) to adjust the scraper structure (2) to a first position; Control the inner cylinder to run at a second rotation speed r2 for a second preset time t2, control the drainage pump to drain water, and control the adjustment device (3) to adjust the scraper structure (2) to a second position; Wherein, the first rotational speed r1 is less than the second rotational speed r2, and the first position is closer to the center of the outer cylinder (100) than the second position.

9. The washing equipment control method according to claim 7, characterized in that, When the amount of foam inside the outer cylinder (100) exceeds the standard, a defoaming procedure is initiated, which includes the following steps prior to: When the dehydration process starts, the initial water level height H1 is detected; Control the drainage pump to operate for a third preset time t3, and detect the water level height H2 after drainage; Based on the third preset duration t3, the drainage volume of the drainage pump per unit time, and the initial water level height H1, the first theoretical water level height H01 is obtained; If the water level H2 after drainage is higher than the first theoretical water level H01, and the difference exceeds the first threshold, then the amount of foam in the outer cylinder (100) is determined to be excessive.

10. The washing equipment control method according to claim 9, characterized in that, After the defoaming process is completed, the method further includes: Detect the current water level height H3; The second theoretical water level H02 is obtained based on the spray water volume of the spray rinsing module, the drainage volume of the drainage pump during the defoaming process, and the first theoretical water level height H01. If the current water level H3 is higher than the second theoretical water level H02, and the difference exceeds the second threshold, then the defoaming procedure is repeated.

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