Spraying control method of washing equipment and washing equipment

Abstract

The invention provides a spraying control method of washing equipment and the washing equipment, the washing equipment comprises a barrel body, the control method comprises the steps that the distance h1 from the inner bottom end of the barrel body to the barrel opening end of the barrel body is obtained in an empty barrel state, the distance h2 from the inner bottom end of the barrel body to the barrel opening end of the barrel body is obtained before spraying water is fed, the obtained distance h2 and the distance h1 are compared, and if h2 is smaller than h1, the washing equipment is started. If yes, water is controlled to be sprayed into the barrel body. In the invention, if the obtained distance from the inner bottom end of the barrel body to the barrel opening end of the barrel body is smaller than the distance from the inner bottom end of the barrel body to the barrel opening end of the barrel body in the empty barrel state, it is indicated that clothes exist in the current barrel body, and at the moment, water is controlled to be sprayed into the barrel body, so that the clothes can be accurately and effectively sprayed and washed or rinsed, and otherwise, it is indicated that no clothes exist in the barrel body; at the moment, spraying water inlet does not need to be controlled, and water and electricity resource waste caused by invalid spraying is avoided; according to the washing equipment, the position of the clothes is intelligently judged according to the distance from the inner bottom end of the barrel body to the barrel opening end of the barrel body, and accurate positioning spraying of the clothes is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical equipment, and in particular, relates to a spray control method for washing equipment and the washing equipment. Background Art

[0002] "Washing equipment" refers to a general term for a type of household appliances that can perform washing, dehydration and other programs, such as washing machines, washer-dryers, etc.

[0003] The washing principle of the washing machine is: control the addition of detergent into the barrel of the washing machine, and then control the rotation of the impeller to stir the washing water in the barrel of the washing machine, create a strong water flow to flush and drive the clothes to turn over, and under the action of water flushing, turning and friction, the effect of cleaning the clothes is achieved; after washing is completed, perform the rinsing program to rinse off the detergent on the clothes.

[0004] At present, when a washing machine rinses clothes, the number of rinses is increased to ensure that the clothes are rinsed clean. However, this rinsing method not only wastes water and electricity resources, but also prolongs the rinsing time and reduces the rinsing efficiency.

[0005] Based on this, some washing equipment is provided with a spray rinsing program, which specifically includes: controlling the spray component to spray water into the barrel of the washing equipment, and controlling the driving component to drive the barrel to rotate, so as to dehydrate the clothes in the barrel; during the dehydration and rinsing process, the spray component intermittently sprays water into the barrel until the total spraying time reaches a preset value, then stops spraying water and enters the final dehydration program.

[0006] However, in the above technical solution, it is impossible to determine whether the spray component sprays washing water on the clothes, especially when there are relatively few clothes. The clothes may stick to the inner wall of the barrel, and blind spraying cannot achieve effective spray rinsing of the clothes; and when there are more clothes, the spray water inlet is uneven, the clothes that are sprayed have a better rinsing rate, and the clothes that are not sprayed have a poor rinsing rate and uneven rinsing.

[0007] In view of this, the present invention is proposed. Summary of the invention

[0008] The purpose of the present invention is to provide a spray control method for a washing machine to achieve accurate positioning spray rinsing of clothes, improve the efficiency of spray rinsing, and improve the uniformity of rinsing. The present invention also provides a washing machine to achieve the purpose of improving the rinsing effect of clothes and saving water and electricity resources.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0010] A spray control method for a washing device, the washing device comprising a barrel body for containing clothes, obtaining a distance h1 from the bottom end of the barrel body to its barrel mouth end in an empty barrel state, obtaining a distance h2 from the bottom end of the barrel body to its barrel mouth end before spraying water, comparing the obtained distance h2 with the distance h1, and if h2

[0011] Furthermore, obtaining the distance from the bottom end of the barrel body to its barrel mouth includes: obtaining the distance h2 from different positions of the bottom end of the barrel body to its barrel mouth, and controlling water to be sprayed into the position of h2

[0012] Furthermore, obtaining the distance from different positions of the bottom end of the barrel body to the barrel mouth includes: obtaining a plurality of distances h along the circumference of the barrel body. 21 、h 22 、h 23 ……h 2n , and select several positions corresponding to the values ​​less than h1 in the distance, and spray water into the selected positions respectively.

[0013] Furthermore, spraying water into the screened positions respectively includes: sorting the values ​​of the screened distances that are less than h1 in order from small to large, and controlling the spraying of water into the positions corresponding to the distances arranged from small to large in sequence; or, controlling the spraying of water into the screened positions in sequence along the circumference of the barrel body.

[0014] Further, controlling the spray water inflow includes: controlling the intensity of the spray water inflow to be negatively correlated with the acquired distance h2;

[0015] Preferably, the intensity of the spraying water includes the duration of the spraying water and the water pressure of the spraying water.

[0016] Furthermore, the water absorption of the clothes in the barrel is obtained, and the intensity of the spraying water is controlled to be positively correlated with the obtained water absorption intensity.

[0017] Furthermore, the first and second water level differences d1 and d2 are preset, and d2>d1, and obtaining the water absorption of the clothes in the barrel includes:

[0018] The preset water inlet level is d0. After the water reaches the preset water inlet level d0, washing begins. After washing is completed and before draining, the current water level value d in the barrel is obtained, and the difference △d=d0-d is calculated. The difference △d is compared with the preset first and second water level differences d1 and d2. If △d<d1, the clothes have low water absorption. If d1≤△d<d2, the clothes have medium water absorption. If △d≥d2, the clothes have high water absorption.

[0019] ​​Further, when the difference △d is greater than or equal to the preset second water level difference d2, the preset water inlet level d0 is controlled to be increased, and during the rinsing process, the water is controlled to flow to the increased preset water inlet level d0' for rinsing.

[0020] Furthermore, after the spraying is completed, the clothes are controlled to be dehydrated, and after the dehydration is completed, water is sprayed into the barrel again to form a cycle of spraying-dehydration-spraying-dehydration, and the number of cycles is controlled to be positively correlated with the obtained water absorption strength.

[0021] The present invention also provides a washing device which is controlled by any control method described in the above technical solutions.

[0022] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0023] In the present invention, if the distance from the bottom end of the barrel body to its barrel mouth is smaller than the distance from the bottom end of the barrel body to its barrel mouth in the empty barrel state, it indicates that there are clothes in the current barrel body. At this time, spraying water into the barrel body is controlled to perform accurate and effective spray washing or rinsing of the clothes. Otherwise, it indicates that there are no clothes in the barrel body. At this time, there is no need to control the spraying water to avoid ineffective spraying and wasting water and electricity resources.

[0024] In the present invention, the distance from different positions of the bottom end of the barrel to the barrel mouth is judged so as to make a comprehensive judgment on whether there are clothes in the barrel. When h2

[0025] The washing device of the present invention is controlled by the control method of the present invention. The washing device of the present invention can intelligently judge whether there are clothes in the barrel body and the position of the clothes according to the distance from the bottom end of the barrel body to the barrel mouth end, and then accurately position the spray to the position where the clothes exist, thereby improving the efficiency of spray washing or rinsing and avoiding ineffective spraying and wasting water and electricity resources.

[0026] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0028] Figure 1 A control method flow chart of the present invention;​

[0029] Figure 2 Another control method flow chart of the present invention;

[0030] Figure 3 A flow chart of another control method of the present invention;

[0031] Figure 4 A flow chart of another control method of the present invention;

[0032] Figure 5 This is another control method flow chart of the present invention.

[0033] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] "Washing equipment" refers to a general term for a class of household appliances that can perform washing, dehydration and other procedures, such as washing machines, integrated washing and drying machines, etc. The washing equipment includes a barrel for accommodating clothes and a pulsator rotatably arranged in the barrel. Specifically, the barrel includes:

[0038] An outer barrel for containing laundry water;

[0039] An inner tub, rotatably disposed in the outer tub and used to contain laundry;

[0040] A pulsator is rotatably disposed in the inner barrel;

[0041] A motor is used to provide a driving force to rotate at least one of the inner tub and the pulsator.

[0042] like Figures 1 to 5 As shown, the present invention provides a control method for a washing device, comprising: obtaining a distance h1 from the bottom end of the barrel body to its barrel mouth in an empty barrel state, obtaining a distance h2 from the bottom end of the barrel body to its barrel mouth before spraying water, comparing the obtained distance h2 with the distance h1, and if h2

[0043] Specifically, Figure 1 As shown, the control steps include:

[0044] S1, start;

[0045] S2, obtaining the distance h1 from the bottom end of the barrel to its barrel mouth in the empty barrel state;

[0046] S3, obtaining the distance h2 from the bottom end of the barrel to the barrel mouth end;

[0047] S4, determining whether the obtained distance h2 is less than the distance h1 from the bottom end of the barrel to the barrel mouth end when the barrel is empty, if so, executing step S5; otherwise, executing step S6;

[0048] S5, control the water spraying into the barrel;

[0049] S6. End.

[0050] In the present invention, a distance sensor is provided on the washing device, and in steps S2 and S3, the distance from the bottom end of the barrel to the barrel mouth is obtained by controlling the distance sensor to be turned on. Alternatively, a camera is provided on the washing device, and a photo of the barrel is taken by the camera to obtain the distance from the bottom end of the barrel to the barrel mouth.

[0051] When the barrel is empty, the distance from the bottom of the barrel to its mouth refers to the distance from the bottom of the barrel to the mouth of the barrel; when there are clothes in the barrel, the distance from the bottom of the barrel to its mouth of the barrel refers to the distance from the clothes in the barrel to the mouth of the barrel.

[0052] In the present invention, if the distance from the bottom end of the barrel body to its barrel mouth is smaller than the distance from the bottom end of the barrel body to its barrel mouth in the empty barrel state, it indicates that there are clothes in the current barrel body. At this time, spraying water into the barrel body is controlled to perform accurate and effective spray washing or rinsing of the clothes. Otherwise, it indicates that there are no clothes in the barrel body. At this time, there is no need to control the spraying water to avoid ineffective spraying and wasting water and electricity resources.

[0053] ​As an embodiment of the present invention, obtaining the distance from the bottom end of the barrel body to its barrel mouth includes: obtaining the distance h2 from different positions of the bottom end of the barrel body to its barrel mouth, and controlling water to be sprayed into the position where h2 < h1 in the barrel body.

[0054] In this embodiment, the distance from different positions of the bottom of the barrel to the barrel mouth is judged to comprehensively judge whether there are clothes in the barrel. When h2

[0055] As an implementation method of this embodiment, obtaining the distance from different positions of the bottom end of the barrel to the barrel mouth includes: obtaining a plurality of distances h along the circumference of the barrel 21 、h 22 、h 23 ……h 2n , and select several positions corresponding to the values ​​less than h1 in the distance, and spray water into the selected positions respectively.

[0056] Specifically, Figure 2 As shown, the control steps include:

[0057] S1, start;

[0058] S2, obtaining the distance h1 from the bottom end of the barrel to its barrel mouth in the empty barrel state;

[0059] S3. Obtain several distances h along the circumference of the barrel 21 、h 22 、h 23 ……h 2n ;

[0060] S4. Determine h 21 、h 22 、h 23 ……h 2n Is there a value less than h1 in ? If so, execute step S5; otherwise, execute step S7;

[0061] S5, filter out the positions corresponding to the values ​​less than h1 among several distances;

[0062] S6. Spray water into the screened positions;

[0063] S7. End.

[0064] In step S3, multiple distance values ​​of circles can be obtained. Specifically, first obtain several distances h of the outermost circle (recorded as the first circle) 21 、h 22 、h 23 ……h 2n ​, select several positions corresponding to the values ​​less than h1 in the distance, and spray water into the selected positions respectively; after spraying water, obtain several distances h in the circle within the outermost circle (recorded as the second circle) 21 、h 22 、h 23 ……h 2n , select several positions corresponding to the values ​​less than h1 in the distance, and spray water into the selected positions respectively; after spraying water, obtain several distances h of a circle within the second circle (recorded as the third circle) 21 、h 22 、h 23 ……h 2n , select several positions corresponding to the values ​​less than h1 in the distance, and spray water into the selected positions respectively; and so on, the specific number of circles and the number of distance values ​​obtained in each circle can be determined according to the actual situation.

[0065] Furthermore, the fewer clothes in the barrel, the larger the range of optional positions of the clothes in the barrel. Therefore, when there are fewer clothes in the barrel, the specific number of circles and the number of distance values ​​obtained corresponding to each circle are controlled to be larger, so as to more accurately judge the position of the clothes in the barrel.

[0066] As another implementation of this embodiment, obtaining the distance from different positions of the bottom end of the barrel to the barrel mouth includes: obtaining a plurality of distances h along the circumference of the barrel 21 、h 22 、h 23 ……h 2n , filter out the values ​​less than h1 among several distances, sort the values ​​less than h1 among the filtered out distances in order from small to large, and control the water spraying to the positions corresponding to the distances arranged from small to large in sequence.

[0067] Specifically, Figure 3 As shown, the control steps include:

[0068] S1, start;

[0069] S2, obtaining the distance h1 from the bottom end of the barrel to its barrel mouth in the empty barrel state;

[0070] S3. Obtain several distances h along the circumference of the barrel 21 、h 22 、h 23 ……h 2n ;

[0071] S4. Determine h 21 、h 22 、h 23 ……h 2nIs there a value less than h1 in ? If so, execute step S5; otherwise, execute step S8;

[0072] S5, filter out the positions corresponding to the values ​​less than h1 among several distances;

[0073] S6. Sort the selected values ​​in ascending order;

[0074] S7, controlling the water to be sprayed in order to the positions corresponding to the distances arranged from small to large;

[0075] S8. End.

[0076] In this embodiment, the smaller the distance value obtained, the higher the height of the clothes at that position, that is, the clothes are piled thicker, and the water is controlled to be sprayed in sequence to the positions corresponding to the distances arranged from small to large, that is, the clothes are sprayed in order from high to low. In this way, the positions with thicker piles of clothes can be sprayed first, ensuring that the spray washing or spray rinsing is more sufficient.

[0077] As another implementation of this embodiment, obtaining the distance from different positions of the bottom end of the barrel to the barrel mouth includes: obtaining a plurality of distances h along the circumference of the barrel 21 、h 22 、h 23 ……h 2n , select several distances that are smaller than h1, and control the water to be sprayed toward the selected positions in sequence along the circumference of the barrel.

[0078] In this embodiment, water is controlled to be sprayed toward the screened positions in sequence along the circumference of the barrel body, that is, water is sprayed toward the positions with clothes in sequence along the circumference of the barrel body, thereby achieving the effect of detecting and positioning while spraying, and improving the efficiency of spraying clothes while realizing precise positioning and spraying.

[0079] As another embodiment of the present invention, controlling the spraying water inlet includes: controlling the intensity of the spraying water inlet to be negatively correlated with the acquired distance h2. The intensity of the spraying water inlet includes the duration of the spraying water inlet and the water pressure of the spraying water inlet.

[0080] The smaller the distance value obtained, the higher the height of the clothes at that location, that is, the thicker the clothes are piled up. The duration of spraying water into that location and the water pressure of spraying water are controlled to be greater to achieve sufficient spraying and flushing of the piled clothes.

[0081] Preferably, water is controlled to be sprayed sequentially to positions corresponding to the distance h2 arranged from small to large, and the duration and water pressure of the spraying water are controlled to decrease as the distance increases, thereby further achieving the purpose of fully spraying the positions where thicker clothes are piled up in sequence.

[0082] As another embodiment of the present invention, the water absorption of the clothes in the barrel is obtained, and the intensity of controlling the spraying water is positively correlated with the obtained water absorption intensity. Specifically, the stronger the water absorption of the clothes, the greater the intensity of controlling the spraying water, and the greater the duration and water pressure of controlling the spraying water.

[0083] In this embodiment, the stronger the water absorption of the clothes, the more difficult it is to rinse and clean the clothes. Therefore, the intensity of the spray water is controlled to increase to ensure that the clothes with strong water absorption are fully and thoroughly rinsed to ensure a better cleaning effect on the clothes.

[0084] As an implementation of this embodiment, the first and second water level differences d1 and d2 are preset, and d2>d1, and obtaining the water absorption of the clothes in the barrel includes:

[0085] The preset water inlet level is d0. After the water reaches the preset water inlet level d0, washing begins. After washing is completed and before draining, the current water level value d in the barrel is obtained, and the difference △d=d0-d is calculated. The difference △d is compared with the preset first and second water level differences d1 and d2. If △d<d1, the clothes have low water absorption. If d1≤△d<d2, the clothes have medium water absorption. If △d≥d2, the clothes have high water absorption.

[0086] Specifically, Figure 4 As shown, the control steps include:

[0087] S1, start;

[0088] S2, preset water inlet level d0, first water level difference d1, second water level difference d2;

[0089] S3, obtaining the distance h1 from the bottom end of the barrel to the barrel mouth in the empty barrel state;

[0090] S4, water inlet and obtain the water level d;

[0091] S5, determine whether the obtained water inlet level d is greater than or equal to the preset water inlet level d0; if so, execute step S6, otherwise, return to step S4;

[0092] S6, start washing;

[0093] S7, after washing is completed, obtain the water level d;

[0094] S8, calculate the difference △d=d0-d;

[0095] S9, determining whether the calculated difference △d is less than the first water level difference d1; if so, executing step S91, otherwise, executing step S91';

[0096] S91. Clothing has low water absorption;

[0097] S92, drainage;

[0098] S93, after the drainage is completed, obtain the distance h2 from the bottom end of the barrel body to the barrel mouth end;

[0099] S94, determine whether the obtained distance h2 is less than the distance h1 from the bottom end of the barrel to the barrel mouth end in the empty barrel state; if so, execute step S95; otherwise, execute step S11;

[0100] S95, spraying water for rinsing according to the first spraying water intensity;

[0101] S91', determine whether the calculated difference d1≤△d<d2 is established; if so, execute step S92', otherwise, execute step S92'';

[0102] S92', clothing is of medium absorbency;

[0103] S93', drainage;

[0104] S94', after the drainage is completed, obtain the distance h2 from the bottom end of the barrel body to the barrel mouth end;

[0105] S95', determine whether the obtained distance h2 is less than the distance h1 from the bottom end of the barrel to the barrel mouth end when the barrel is empty; if so, execute step S96', otherwise, execute step S11;

[0106] S96', spray water for rinsing according to the second spray water intensity;

[0107] S92'', clothing is highly absorbent;

[0108] S93'', drainage;

[0109] S94'', after the drainage is completed, obtain the distance h2 from the bottom end of the barrel body to the barrel mouth end;

[0110] S95'', determine whether the obtained distance h2 is less than the distance h1 from the bottom end of the barrel to the barrel mouth end in the empty barrel state; if so, execute step S96''; otherwise, execute step S11;

[0111] S96'', spray water for rinsing according to the third spray water intensity;

[0112] S10, dehydration;

[0113] S11. End.

[0114] Among them, the first spray water inlet intensity is less than the second spray water inlet intensity, and the second spray water inlet intensity is less than the third spray water inlet intensity.

[0115] In this embodiment, if the calculated difference △d is less than the first water level difference d1, it means that after washing the clothes, the water level drops by a small amount, that is, the water absorption of the clothes is poor; if d1≤△d<d2, it means that after washing the clothes, the water level drops by a moderate amount, that is, the clothes absorb part of the washing water, and the clothes are of medium water absorption; if △d≥d2, it means that after washing the clothes, the water level drops more, and the clothes absorb more washing water, which further indicates that the water absorption of the clothes is strong.

[0116] As another implementation of this embodiment, when the difference △d is greater than or equal to the preset second water level difference d2, the preset water inlet level d0 is controlled to be increased. During the rinsing process, the water is controlled to flow to the increased preset water inlet level d0' for rinsing.

[0117] In this embodiment, when the difference △d is greater than or equal to the preset second water level difference d2, it indicates that the clothes have strong water absorption and a good cleaning effect cannot be achieved by simply spraying water for washing or rinsing. Therefore, the water inlet is controlled to the increased preset water level d0' to achieve the purpose of fully cleaning the clothes with strong water absorption.

[0118] As an embodiment of the present invention, after the spraying is completed, the clothes are controlled to be dehydrated, and after the dehydration is completed, water is sprayed into the barrel again to form a cycle of spraying-dehydration-spraying-dehydration, and the number of cycles is controlled to be positively correlated with the obtained water absorption intensity.

[0119] Specifically, Figure 5 As shown, the control steps include:

[0120] S1, start;

[0121] S2, preset water inlet level d0, first water level difference d1, second water level difference d2, number of times n 01 、n 02 、n 03 ;n 01 <n 02 <n 03 ;

[0122] S3, obtaining the distance h1 from the bottom end of the barrel to the barrel mouth in the empty barrel state;

[0123] S4, water inlet and obtain the water level d;

[0124] S5, determine whether the obtained water inlet level d is greater than or equal to the preset water inlet level d0; if so, execute step S6, otherwise, return to step S4;

[0125] S6, start washing;

[0126] S7, after washing is completed, obtain the water level d;

[0127] S8, calculate the difference △d=d0-d;

[0128] S9, determining whether the calculated difference △d is less than the first water level difference d1; if so, executing step S91, otherwise, executing step S91';

[0129] S91. Clothing has low water absorption;

[0130] S92, drainage;

[0131] S93, after the drainage is completed, obtain the distance h2 from the bottom end of the barrel body to the barrel mouth end;

[0132] S94, determine whether the obtained distance h2 is less than the distance h1 from the bottom end of the barrel to the barrel mouth end in the empty barrel state; if so, execute step S95; otherwise, execute step S11;

[0133] S95, spraying water for rinsing according to the first spraying water intensity;

[0134] S96, dehydration, and cumulative number of times n;

[0135] S97: Determine whether the accumulated number of times n is greater than or equal to the preset number of times n 01 ; If yes, execute step S10; otherwise, return to step S95;

[0136] S91', determine whether the calculated difference d1≤△d<d2 is established; if so, execute step S92', otherwise, execute step S92'';

[0137] S92', clothing is of medium water absorption;

[0138] S93', drainage;

[0139] S94', after the drainage is completed, obtain the distance h2 from the bottom end of the barrel body to the barrel mouth end;

[0140] S95', determine whether the obtained distance h2 is less than the distance h1 from the bottom end of the barrel to the barrel mouth end when the barrel is empty; if so, execute step S96', otherwise, execute step S11;

[0141] S96', spray water for rinsing according to the second spray water intensity;

[0142] S97', dehydration, and cumulative number of times n;

[0143] S98', determine whether the accumulated number of times n is greater than or equal to the preset number of times n 02 ; If yes, execute step S10; otherwise, return to step S96';

[0144] S92'', clothing is highly absorbent;

[0145] S93'', drainage;

[0146] S94'', after the drainage is completed, obtain the distance h2 from the bottom end of the barrel body to the barrel mouth end;

[0147] S95'', determine whether the obtained distance h2 is less than the distance h1 from the bottom end of the barrel to the barrel mouth end in the empty barrel state; if so, execute step S96''; otherwise, execute step S11;

[0148] S96'', spray water for rinsing according to the third spray water intensity;

[0149] S97'', dehydration, and cumulative number of times n;

[0150] S98'', determine whether the accumulated number of times n is greater than or equal to the preset number of times n 03 ; If yes, execute step S10; otherwise, return to step S96'';

[0151] S10, end.

[0152] In this embodiment, the stronger the water absorption of the clothes, the more difficult it is to rinse the clothes. At this time, the cycle of spraying-spinning-spraying-spinning is controlled to increase to ensure that the clothes with strong water absorption are fully washed.

[0153] As an embodiment of the present invention, a spray control method for a washing device is proposed. In order to accurately control the amount of water sprayed, the following method is adopted:

[0154] S1: Start;

[0155] S2: After the main wash is finished, the spraying program is started; wherein, the "main wash" refers to the program of washing clothes after adding detergent, and the clothes can be rinsed after the main wash to rinse off the detergent foam on the clothes;

[0156] S3: Control and obtain the water absorption saturation of the clothes;

[0157] S4: Determine whether the water absorption saturation of the clothes has reached the upper limit, if so, execute S5, otherwise execute S3;

[0158] S5: Control to close the spraying program;

[0159] S6: End.

[0160] During the entire spraying process, the drainage system of the washing equipment is always open and can drain water to the outside of the washing equipment.

[0161] The water absorption saturation of the clothes in steps S3 and S4 refers to the degree of water absorption of the clothes after being sprayed. When the clothes are continuously sprayed but cannot be sprayed with water, it is considered that the clothes have reached the upper limit of water absorption saturation.

[0162] If too little water is sprayed during the shower, it will result in incomplete rinsing. In order to achieve a better rinsing effect, the number of sprays should be increased and the rinse should be repeated to extend the rinsing time. If too much water is sprayed, it will cause a waste of water.

[0163] When the clothes reach the upper limit of their water absorption saturation, they can no longer absorb water. Even if they are sprayed again, the newly sprayed water will flow away directly and cannot be absorbed by the clothes, and thus cannot dissolve and carry away the detergent and sewage in the clothes. That is, the amount of water absorbed by the clothes at this time is the maximum amount of water that can be used for rinsing when rinsing by spraying. Rinsing with this amount of water can maximize the rinsing effect while not wasting water.

[0164] In the present invention, by controlling the opening and closing of the spraying program through the water absorption saturation of the clothes, the water spraying amount can be controlled most accurately to avoid insufficient or excessive water spraying due to differences in the weight and water absorption of the clothes, thereby ensuring the rinsing effect and saving water.

[0165] As an embodiment of the present invention, in order to obtain and determine the water absorption saturation of clothing, the following method is used:

[0166] S1: Start;

[0167] S2: preset current threshold I a ;

[0168] S3: After the main wash is finished, the impeller and / or the barrel are controlled to rotate, and the spraying program is controlled to start;

[0169] S4: Control and obtain the current values ​​I1, I2, ... I of the motor within the set time period n ;

[0170] S5: Compare the obtained I1, I2, ... I n With the preset current threshold I a If the obtained I1, I2, ... n Both are at the current threshold I a If the value is within the range of , execute S6, otherwise execute S4;

[0171] S6: Control to close the spraying program;

[0172] S7: End.

[0173] When water is sprayed into the drum, the clothes absorb water and gain weight, which increases the load on the motor that powers the impeller and the drum, and the current flowing through the motor increases accordingly. When the water absorption saturation of the clothes reaches the upper limit, the clothes no longer absorb water, and the water sprayed on the clothes flows away directly, and the load on the motor no longer increases, so the current flowing through the motor will basically stabilize within a range.

[0174] The preset current threshold I a It is the range threshold for motor current stability when the clothes reach the upper limit of water absorption saturation, which is obtained based on experiments, rather than a single value, and can be adjusted as needed.

[0175] Furthermore, the more clothes there are, the higher the current threshold I a The bigger.

[0176] Furthermore, the more clothes there are, the higher the current threshold I a The wider the scope.

[0177] The more clothes there are, the greater the vibration may be when the barrel rotates. When the barrel shakes, the instantaneous load change may be greater, so when it reaches the upper limit of water absorption saturation, the fluctuation range of the motor current will be greater.

[0178] The set time period in step S4 may be 10 seconds.

[0179] In this embodiment, the water absorption saturation of the clothes is monitored by monitoring the motor current. When the motor current is stable at a preset current threshold value I a When it is within the range, it means that the water saturation of the clothing has reached the upper limit.

[0180] As another embodiment of the present invention, in order to obtain and determine the water absorption saturation of clothing, the following method is used:

[0181] S1: Start;

[0182] S2: preset current threshold I a and number of times N0;

[0183] S3: After the main wash is finished, the impeller and / or the barrel are controlled to rotate, and the spraying program is controlled to start;

[0184] S4: Control and obtain the current values ​​I1, I2, ... I of the set number of motors n ;

[0185] S5: Compare the obtained I1, I2, ... I n With the preset current threshold I a The size of the current threshold I is controlled to obtain the continuous a Current value within the range I n The number of times N;

[0186] S6: Compare the obtained number of times N with the preset number of times N0. If N≥N0, execute S7, otherwise execute S4;

[0187] S7: Control to close the spraying program;

[0188] S8: End.

[0189] In this embodiment, when the current threshold I is continuously obtained a When the number of current values ​​within the range reaches a preset number N0, it can be considered that the current of the motor has stabilized, and further that the water absorption saturation of the clothes has reached the upper limit.

[0190] As another embodiment of the present invention, in order to obtain and determine the water absorption saturation of clothing, the following method is used:

[0191] S1: Start;

[0192] S2: preset current fluctuation value I0;

[0193] S3: After the main wash is finished, the impeller and / or the barrel are controlled to rotate, and the spraying program is controlled to start;

[0194] S4: Control and obtain the current values ​​I1, I2, ... I of the motor within the set time period n ,

[0195] S5: Calculate the current fluctuation value △I1=|I2-I1|, △I2=|I3-I2|……△I n-1 =|I n -I n-1 ∣;

[0196] S6: Comparison △I 1、 △I2……△I n-1 and the preset current fluctuation value I0, if △I 1、 △I2……△I n-1 If both are less than or equal to I0, execute S7, otherwise execute S4;

[0197] S7: Control to close the spraying program;

[0198] S8: End.

[0199] Under ideal conditions, the preset current fluctuation value I0=0. However, in actual use, the barrel may shake, the flow rate of water sprayed into the barrel may fluctuate, and there may be other factors that may affect the stability of the motor load, causing the motor current to still change slightly after the clothes reach the upper limit of water absorption saturation. At this time, the preset current fluctuation value I0 needs to be set to a variable range according to the actual situation.

[0200] Furthermore, the preset current fluctuation value I0 can be selected according to the clothes in the barrel. For example, the more clothes there are in the barrel, the larger the preset current fluctuation value I0 is.

[0201] Controlling the rotation of the impeller and / or the barrel body in step S3 refers to the motor providing power for the impeller and the barrel body to rotate.

[0202] Preferably, the motor and the barrel are controlled to rotate at a uniform speed.

[0203] The set time period in step S4 refers to a fixed time length, such as 5-10 seconds. Within this fixed time length, if all the current fluctuation values ​​I obtained are less than or equal to the preset current fluctuation value I0, it means that the weight of the clothes in the barrel has stabilized, no longer absorbs water, and has reached the upper limit of water absorption saturation.

[0204] If the washing device is a drum washing machine, controlling the rotation of the impeller and / or the barrel refers to controlling the rotation of the barrel. If the washing device is a pulsator washing machine, controlling the rotation of the impeller and / or the barrel generally refers to controlling the impeller and the barrel to rotate synchronously in the same direction, or it may be controlling one of the impeller and the barrel to rotate separately.

[0205] When water is sprayed into the drum, the clothes absorb water and increase their weight, which increases the load on the motor that powers the impeller and the drum, and the current flowing through the motor increases accordingly. When the water absorption saturation of the clothes reaches the upper limit, the clothes no longer absorb water, and the water sprayed on the clothes flows away directly, and the load on the motor no longer increases, so the current flowing through the motor basically does not change.

[0206] In this embodiment, the change in the weight of the clothes in the barrel is determined by the change in the current in the motor that provides power to the impeller and the barrel, and then it is determined whether the water absorption saturation of the clothes has reached an upper limit. When the current fluctuation value within the set time is less than the preset current fluctuation value, it is determined that the weight of the clothes in the barrel has stopped changing, and then it is determined that the clothes have reached the upper limit of water absorption saturation.

[0207] As another embodiment of the present invention, in order to determine whether the clothes have reached the upper limit of water absorption saturation, the following method can also be used:

[0208] S1: Start;

[0209] S2: preset current fluctuation value I0;

[0210] S3: After the main wash is finished, the impeller and / or the barrel are controlled to rotate, and the spraying program is controlled to start;

[0211] S4: Control and obtain the current values ​​I1, I2, ... I of the set number of motors n ,

[0212] S5: Calculate the current fluctuation value △I1=|I2-I1|, △I2=|I3-I2|……△I n-1 =|I n -I n-1 ∣;

[0213] S6: Comparison △I 1、 △I2……△I n-1 and the preset current fluctuation value I0, if △I 1、 △I2……△I n-1 If both are less than or equal to I0, execute S7, otherwise execute S4;

[0214] S7: Control to close the spraying program;

[0215] S8: End.

[0216] Among them, n≥3.

[0217] This embodiment can also be expressed as:

[0218] S1: Start;

[0219] S2: preset current fluctuation value I0 and number N0;

[0220] S3: After the main wash is finished, the impeller and / or the barrel are controlled to rotate, and the spraying program is controlled to start;

[0221] S4: Control and obtain the current values ​​I1, I2, ... I of the set number of motors n ,

[0222] S5: Calculate the current fluctuation value △I1=|I2-I1|, △I2=|I3-I2|……△I n-1 =|I n -I n-1 ∣;

[0223] S6: Comparison △I 1、 △I2……△I n-1 The size of the preset current fluctuation value I0,

[0224] S7: Obtain the current fluctuation value △I that occurs continuously n The number of times N that the current is less than or equal to the preset current value I0;

[0225] S8: Compare the obtained number of times N with the preset number of times N0. If N≥N0, execute S9, otherwise execute S4;

[0226] S9: Control to close the spraying program;

[0227] S10: End.

[0228] Among them, N≥2.

[0229] In this embodiment, the control obtains a set number of current values ​​and calculates the fluctuation of these current values. If the fluctuation value is less than the preset fluctuation value I0, it can be determined that the clothes in the barrel have indeed reached the upper limit of water absorption saturation.

[0230] As an embodiment of the present invention, when the washing device is washing, the water pressure of the water source supplying water to the washing device, such as a tap water pipe, may be relatively low, resulting in slow water inflow. In this case, the following method can be adopted:

[0231] S1: Start;

[0232] S2: Preset spraying time T MAX ;

[0233] S3: After the main wash is finished, the control starts the spray program and starts timing;

[0234] S4: Get the spraying time T;

[0235] S5: Compare the obtained spraying time T with the pre-trial spraying time T MAX The size of MAX , then execute S6, otherwise execute S8;

[0236] S6: controlling and obtaining the water absorption saturation of the clothes;

[0237] S7: Determine whether the water absorption saturation of the clothes has reached the upper limit, if so, execute S8, otherwise execute S4;

[0238] S8: Control to close the spraying program;

[0239] S9: End.

[0240] When the water pressure at the water source is insufficient, the water intake during spraying will be very slow, and the clothes will not be able to reach the upper limit of water absorption saturation, which will extend the spraying process indefinitely and affect the washing efficiency.

[0241] Furthermore, if it is detected that the water pressure is too low or the water supply is cut off, the spraying is stopped and the user is prompted through the washing device. A prompt message can also be sent to the user's mobile phone or other networked devices through the Internet of Things to inform the user that the water supply is cut off or the water pressure is too low.

[0242] In this embodiment, the maximum spraying time T is set MAX If the spraying time T reaches the preset spraying time T MAX , then directly turn off the spraying program, stop spraying, and proceed to the next step. Avoid long-term inefficient spraying that affects the washing process.

[0243] As another embodiment of the present invention, after the spraying process, the clothes have been immersed in water, and the detergent in the clothes has dissolved into this part of water. To rinse out this part of detergent, the following method is adopted:

[0244] S1: Start;

[0245] S2: Preset spraying time T MAX ;

[0246] S3: After the main wash is finished, the control starts the spray program and starts timing;

[0247] S4: Get the spraying time T;

[0248] S5: Compare the obtained spraying time T with the pre-trial spraying time T MAX The size of MAX , then execute S6, otherwise execute S8;

[0249] S6: controlling and obtaining the water absorption saturation of the clothes;

[0250] S7: Determine whether the water absorption saturation of the clothes has reached the upper limit, if so, execute S8, otherwise execute S4;

[0251] S8: Control to close the spraying program;

[0252] S9: Control the dehydration of washing equipment;

[0253] S10: End.

[0254] In this embodiment, after the washing device completes the spraying, the washing device is controlled to perform dehydration, so that the detergent in the clothes can be removed and flow away together with the spraying water, thereby completing the rinsing of the clothes.

[0255] As an implementation method of this embodiment, the water absorption saturation of the clothes is controlled and obtained, and the dehydration speed is controlled to be positively correlated with the water absorption saturation of the clothes.

[0256] In this embodiment, for clothes with high water absorption saturation, a higher dehydration speed is adopted, which can complete the dehydration faster and make the clothes cleaner; for clothes with low water absorption saturation, a lower dehydration speed is adopted, which can reduce the load of the motor and save electricity.

[0257] Furthermore, the water absorption saturation of the clothes can be calculated by the current value flowing through the motor, specifically: the current of the motor when the impeller and the barrel rotate at a constant speed is controlled. The faster the current value changes, the faster the load changes, that is, the faster the weight of the clothes in the barrel changes, and the lower the water absorption saturation of the clothes when they absorb water, and the faster the water absorption speed. Correspondingly, the faster the current value changes, the lower the water absorption saturation of the clothes.

[0258] As an embodiment of the present invention, for clothes with strong water absorption, there is a lot of detergent remaining inside, and one spray rinse cannot rinse it out. For this situation, the following method is adopted:

[0259] S1: Start;

[0260] S2: Preset spraying time T MAX ;

[0261] S3: After the main wash is finished, the control starts the spray program and starts timing;

[0262] S4: Get the spraying time T;

[0263] S5: Compare the obtained spraying time T with the pre-trial spraying time T MAX The size of MAX , then execute S6, otherwise execute S8;

[0264] S6: controlling and obtaining the water absorption saturation of the clothes;

[0265] S7: Determine whether the water absorption saturation of the clothes has reached the upper limit, if so, execute S8, otherwise execute S4;

[0266] S8: Control to close the spraying program;

[0267] S9: Control the dehydration of washing equipment;

[0268] S10: controlling the water absorption of the clothes;

[0269] S11: judging the water absorption of the clothes. If the water absorption of the clothes is strong, executing S12, otherwise executing S13;

[0270] S12: Control the second start of the spraying program and dehydration;

[0271] S13: End.

[0272] For clothes with strong water absorption, you can add one spray, or you can control the number of sprays to be positively correlated with the water absorption of the clothes according to the strength of their water absorption, and then set multiple sprays for clothes with higher water absorption.

[0273] In this embodiment, spraying the highly absorbent clothes twice or even multiple times can effectively rinse out a large amount of detergent remaining in the highly absorbent clothes, thereby avoiding incomplete rinsing of the clothes.

[0274] As an implementation of this embodiment, the following method is used to determine the water absorption of clothing:

[0275] S1: Start;

[0276] S2: Preset spraying time TMAX , water level difference △H;

[0277] S3: The main wash starts, and the water level change difference △H' in the barrel is obtained within the set time;

[0278] S4: After the main wash is finished, the control starts the spray program and starts timing;

[0279] S5: Get the spraying time T;

[0280] S6: Compare the obtained spraying time T with the pre-trial spraying time T MAX The size of MAX , then execute S7, otherwise execute S9;

[0281] S7: controlling and obtaining the water absorption saturation of the clothes;

[0282] S8: Determine whether the water absorption saturation of the clothes has reached the upper limit, if so, execute S9, otherwise execute S5;

[0283] S9: Control to close the spraying program;

[0284] S10: Control the dehydration of the washing equipment;

[0285] S11: Compare the obtained water level change difference △H' with the preset water level difference △H. If △H'≥△H, it is determined that the clothes have strong water absorption and execute S12. Otherwise, it is determined that the clothes have weak water absorption and execute S13.

[0286] S12: Control the second start of the spraying program and dehydration;

[0287] S13: End.

[0288] The set time described in step S3 refers to a fixed washing time, such as 120 seconds, which needs to start after the water intake is completed in the main wash stage and end before the drainage of the main wash stage begins.

[0289] In this embodiment, the water level change difference ΔH′ within a set time can represent the water level change speed, that is, the water absorption speed of the clothes. The faster the water absorption speed, the better the water absorption of the clothes.

[0290] As another implementation of this embodiment, the following method can also be used to determine the water absorption of clothing:

[0291] S1: Start;

[0292] S2: Preset spraying time T MAX , current difference △I;

[0293] S3: After the main wash is finished, the impeller and / or the barrel are controlled to rotate and the spraying program is started, and the timing is started;

[0294] S4: Control and obtain the change value △I' of the motor current within the set time;

[0295] S5: Get the spraying time T;

[0296] S6: Compare the obtained spraying time T with the pre-trial spraying time T MAX The size of MAX , then execute S7, otherwise execute S9;

[0297] S7: controlling and obtaining the water absorption saturation of the clothes;

[0298] S8: Determine whether the water absorption saturation of the clothes has reached the upper limit, if so, execute S9, otherwise execute S5;

[0299] S9: Control to close the spraying program;

[0300] S10: Control the dehydration of the washing equipment;

[0301] S11: compare the obtained current change value △I' with the preset current difference value △I, if △I'≥△I, execute S12, otherwise execute S13;

[0302] S12: Control the second start of the spraying program and dehydration;

[0303] S13: End.

[0304] When spraying, the weight of the clothes will continue to increase before reaching the upper limit of water absorption saturation, and the load on the motor that powers the impeller and the barrel will continue to increase, causing the current flowing through the motor to continue to increase. In other words, the stronger the water absorption of the clothes, the faster its weight changes, and the faster the current of the motor changes.

[0305] In this embodiment, the water absorption of the clothes is determined by the change of the motor current during spraying. The faster the current changes, the stronger the water absorption.

[0306] As another embodiment of the present invention, the more clothes there are in the barrel, the more residual detergent there is, and it is more difficult for the spray water to soak the clothes during spraying. The load in the barrel is controlled, and the number of spraying times is controlled to be positively correlated with the load in the barrel.

[0307] The load in the barrel can be represented in a variety of ways, for example, it can be the weight of the clothes in the barrel, or the weight of the clothes and washing water in the barrel. The water level of the washing water in the barrel can also be used to represent the load in the barrel.

[0308] In this embodiment, when there are a lot of clothes, multiple spraying is performed, so that the clothes can be rinsed more cleanly and the clothes can be prevented from being not rinsed clean due to uneven spraying or incomplete soaking caused by too many clothes.

[0309] As another embodiment of the present invention, there is a large space in the barrel body, and there are a number of through holes on the surrounding side walls of the barrel body for washing water to flow out. If the water sprayed into the barrel body cannot be sprayed directly onto the clothes, it may cause the washing water to leak directly from the through holes on the barrel body, causing waste. And it greatly prolongs the time required to complete the spraying, slowing down the rinsing efficiency. To solve this problem, two methods can be adopted:

[0310] Method 1: After the washing machine has been dehydrated, the impeller and the barrel are controlled to stop rotating, the position of the clothes in the barrel is controlled to be obtained, and the spray program is controlled to start spraying water on the clothes.

[0311] Furthermore, there are many ways to obtain the position of the clothes in the barrel, such as setting a camera specifically for obtaining images inside the barrel on the washing equipment, directly shooting the picture inside the barrel with the camera, and then analyzing the picture to obtain the position of the clothes in the barrel.

[0312] Furthermore, the camera can be installed at any position where the clothes in the barrel can be photographed;

[0313] Preferably, the camera can be installed on the inner side of the upper cover of the washing equipment. If the washing equipment has a barrel cover specially used for opening and closing the barrel body, it can also be installed on the inner side of the barrel cover, as long as the image inside the barrel body can be directly captured.

[0314] Furthermore, the camera shoots from top to bottom.

[0315] Furthermore, a water spraying nozzle is installed above the barrel body. The nozzle can be moved. After obtaining the position of the clothes, it moves to the top of the clothes to spray from top to bottom. The position of the nozzle itself remains unchanged, and the spraying direction of the rotating nozzle can be controlled to spray towards the position where the clothes are.

[0316] Furthermore, if the spraying direction of the rotating nozzle is controlled, the acquired position of the clothes includes not only the position of the clothes in the horizontal direction, but also the position of the clothes in the vertical direction, so that the direction of the nozzle can be accurately rotated to spray water onto the clothes.

[0317] In this method, a camera is used to determine the position of the clothes in the barrel, and then water is sprayed directly and accurately onto the clothes, which can maximize the absorption of the water sprayed into the barrel by the clothes. This not only prevents the water sprayed into the barrel from flowing away directly and saves water, but also allows the clothes to reach the upper limit of water absorption saturation in the shortest time, thereby speeding up washing.

[0318] Method 2: After the washing equipment is dehydrated, the impeller and the barrel are controlled to rotate, and the spraying program is controlled to start to spray water to the inner and outer side walls of the barrel.

[0319] Furthermore, the control of the rotation of the impeller and the barrel body may be the inertial rotation of the impeller and the barrel body after the dehydration is completed, or the impeller and the barrel body may be rotated under the power provided by the motor.

[0320] Furthermore, the water spraying nozzle can be directly arranged above the inner peripheral side wall of the barrel body, or slightly offset toward the central axis direction of the barrel body, so that the water spraying nozzle sprays from top to bottom during spraying.

[0321] In this method, the characteristic of clothes sticking to the barrel after dehydration is utilized, and water is sprayed directly from top to bottom on the inner wall of the barrel, and water can be sprayed on the clothes without precise positioning. At the same time, the barrel and the impeller are rotated during spraying, so that the clothes can be rotated, so that even if only one nozzle with a fixed position and fixed direction is set, the spraying of all clothes can be completed, and there is no need to set a camera, and the structure is simple.

[0322] As another embodiment of the present invention, the inertial rotation of the impeller and the barrel of the washing device after dehydration can be used for spraying, and the specific method is as follows:

[0323] S1: Start;

[0324] S2: preset dehydration time T1, T2, T1<T2;

[0325] S3: Control the barrel and impeller of the washing equipment to increase the speed of rotation for dehydration;

[0326] S4: After dehydration time T1, the barrel and the impeller are controlled to stop speeding up and rotate at a constant speed;

[0327] S5: After dehydration time T2, the motor is controlled to stop rotating;

[0328] S6: Preset time T3, after interval T3, control to start the spraying program;

[0329] S7: preset spraying time T4, T5, T4<T5;

[0330] S8: After the spraying program is started for T4 time, the dehydration program is controlled to start;

[0331] S9: After the spraying program is turned on for T5 time, the spraying program is controlled to be turned off;

[0332] S10: Determine whether the preset number of spraying and dehydration times has been reached. If so, execute S11; otherwise, execute S4;

[0333] S11: Control the washing device to close the drainage channel to allow water to enter, and control the impeller and the barrel to rotate for rinsing after reaching a preset water level;

[0334] S12: After rinsing for a preset time, draining and spinning are controlled.

[0335] S13: End.

[0336] In steps S4 and S5, the barrel and the impeller are controlled to stop increasing speed in the final stage of dehydration, so that a better dehydration effect can be obtained while the speed does not increase too high, thereby shortening the time required for the impeller and the barrel to decelerate.

[0337] In step S6, the spraying program is restarted after an interval of T3 after the drainage is stopped. This can prevent the inertial rotation speed of the impeller and the barrel from being too high when the drainage has just ended, so that the water sprayed on the clothes is removed before it penetrates into the clothes, affecting the rinsing effect.

[0338] In steps S8 and S9, when the spraying program has not yet stopped, the dehydration is started in advance, and the spraying can be continued when the dehydration speed is still low. There is no need to complete all the spraying before starting the dehydration, which speeds up the washing process.

[0339] For example, in a washing process, the dehydration lasts for 30 seconds. From the beginning of dehydration to the 25th second, the impeller and the barrel rotate at an increasing speed. From the 25th second to the 30th second, the impeller and the barrel rotate at a constant speed at the 25th second of dehydration. At the 30th second of dehydration, the control motor stops providing power to the impeller and the barrel, so that the impeller and the barrel enter the inertial rotation state. After the impeller and the barrel rotate for 5 seconds, the spray program is turned on and maintained for 10 seconds.

[0340] Furthermore, during the first 10 seconds of starting the spin cycle, the rotation speed of the impeller and the barrel is relatively low, and the water sprayed on the clothes will not be removed, so spraying can continue during the first 10 seconds of starting the spin cycle.

[0341] After each spraying, a dehydration will be performed to remove the water sprayed into the clothes together with the residual detergent.

[0342] In steps S2 to S10, the drainage channel of the washing device is always open, and the water in the barrel can flow out of the washing device at any time during spraying and dehydration.

[0343] The spraying and dehydration times described in step S10 can be preset or adjusted according to the amount of laundry, and the amount of laundry can be represented by the water level in the barrel during the main wash. As the water level increases from low to high, the corresponding amount of laundry also increases from small to large. Furthermore, the required dehydration time also increases from short to long. Furthermore, the higher the dehydration speed and the greater the rotational inertia, the longer the interval time is required to reduce the rotation speed to the point where the spraying program can be started.

[0344] The present invention also provides a washing device which is controlled by any control method described in the above technical solutions.

[0345] The washing device of the present invention is controlled by the control method of the present invention. The washing device of the present invention can intelligently judge whether there are clothes in the barrel body and the position of the clothes according to the distance from the bottom end of the barrel body to the barrel mouth end, and then accurately position the spray to the position where the clothes exist, thereby improving the efficiency of spray washing or rinsing and avoiding ineffective spraying and wasting water and electricity resources.

[0346] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A spray control method for a washing device, the washing device comprising a barrel for accommodating clothes, characterized in that: In the empty barrel state, obtain the distance h1 from the bottom end of the barrel body to its barrel mouth. Before spraying water, obtain the distance h2 from the bottom end of the barrel body to its barrel mouth. Compare the obtained distance h2 with the distance h1. If h2<h1, control the spraying of water into the barrel body.

2. A spray control method for washing equipment according to claim 1, characterized in that: Obtaining the distance from the bottom of the barrel to its mouth includes: obtaining the distance h2 from different positions of the bottom of the barrel to its mouth, and controlling water to be sprayed into the position of h2<h1 in the barrel.

3. A spray control method for washing equipment according to claim 2, characterized in that: Obtaining the distance from different positions of the bottom end of the barrel to its barrel mouth includes: obtaining several distances h along the circumference of the barrel 21 、h 22 、h 23 ……h 2n , and select several positions corresponding to the values ​​less than h1 in the distance, and spray water into the selected positions respectively.

4. A spray control method for washing equipment according to claim 3, characterized in that: Spraying water into the screened positions respectively includes: sorting the values ​​of the screened distances that are less than h1 in order from small to large, and controlling the spraying of water into the positions corresponding to the distances arranged from small to large; or controlling the spraying of water into the screened positions along the circumference of the barrel.

5. A spray control method for washing equipment according to any one of claims 1 to 4, characterized in that: Controlling the spray water inflow includes: controlling the intensity of the spray water inflow to be negatively correlated with the acquired distance h2; Preferably, the intensity of the spraying water includes the duration of the spraying water and the water pressure of the spraying water.

6. A spray control method for washing equipment according to any one of claims 1 to 4, characterized in that: The water absorption of the clothes in the barrel is obtained, and the intensity of the spray water is controlled to be positively correlated with the obtained water absorption intensity.

7. A spray control method for washing equipment according to claim 6, characterized in that: The first and second water level differences d1 and d2 are preset, and d2>d1, and the water absorption of the clothes in the barrel is obtained by: The preset water inlet level is d0. After the water reaches the preset water inlet level d0, washing begins. After washing is completed and before draining, the current water level value d in the barrel is obtained, and the difference △d=d0-d is calculated. The difference △d is compared with the preset first and second water level differences d1 and d2. If △d<d1, the clothes have low water absorption. If d1≤△d<d2, the clothes have medium water absorption. If △d≥d2, the clothes have high water absorption.

8. A spray control method for washing equipment according to claim 7, characterized in that: When the difference △d is greater than or equal to the preset second water level difference d2, the preset water inlet level d0 is controlled to be increased. During the rinsing process, the water is controlled to flow to the increased preset water inlet level d0' for rinsing.

9. The spray control method of a washing device according to claim 6, characterized in that: After the spraying is completed, the clothes are controlled to be dehydrated, and after the dehydration is completed, water is sprayed into the barrel again to form a cycle of spraying-dehydration-spraying-dehydration, and the number of cycles is controlled to be positively correlated with the obtained water absorption strength.

10. A washing device, characterized in that: The control method described in any one of claims 1 to 9 is used for control.

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