Weighing method of washing equipment and washing equipment

Abstract

The invention discloses a washing equipment weighing method and washing equipment, the washing equipment comprises a barrel for accommodating to-be-washed objects and a motor for providing power for rotation of the barrel, the barrel is controlled to rotate at different rotating speeds, and motor energy consumption corresponding to different rotating speeds is obtained; the different rotating speeds and the motor energy consumption corresponding to the rotating speeds are substituted into a preset operation formula, difference operation is conducted on the substituted operation formulas, the weight of the to-be-washed objects in the barrel is calculated, the preset operation formula is E = 2 * M * pi2 * kR2 * N2 + E0, E is the motor energy consumption, M is the weight of the to-be-washed objects in the barrel, R is the radius of the barrel, N is the rotating speed of the barrel, E0 is the additional energy consumption, and the sum of the rotating speeds of the barrel and the energy consumption of the to-be-washed objects in the barrel is equal to 1. K is a proportionality coefficient, and 0 < k < = 1. The drum is controlled to rotate for multiple times, different rotating speeds and motor energy consumption data are obtained, the data are substituted into the operational formula, the weight M of the to-be-washed objects in the drum is obtained, weighing errors caused by differences in the washing equipment manufacturing process are avoided, and the weighing precision is improved.

Description

Technical Field

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

[0002] Washing equipment is an electrical appliance used for washing clothes, such as a washing machine.

[0003] With the improvement of consumption level, automatic washing machines have become popular. For automatic washing machines, the automatic feeding, water addition, drying time, etc. all need to be adjusted and controlled based on the weight of the laundry, so the accuracy of automatic weighing is very important for fully automatic washing machines.

[0004] For fully automatic washing machines, the energy method can be used to determine the weight of the laundry, that is, the weight of the laundry is calculated by the motor energy consumption, the kinetic energy obtained by the laundry, and other additional energy consumption. Among them, the additional energy consumption is generally set to a certain value.

[0005] However, even for washing machines of the same model, differences in the production and assembly of the drum, motor, belt, window gasket, etc. will lead to differences in the driving energy consumption of the washing machine, resulting in inaccurate weighing of the laundry.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The present invention provides a weighing method for washing equipment and washing equipment, the purpose of which is to avoid manufacturing differences of washing equipment and to improve the weighing accuracy of each washing equipment in a targeted manner.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A weighing method for a washing device, the washing device comprising a drum and a motor providing power for the rotation of the drum, controlling the drum to rotate at different speeds, obtaining motor energy consumption corresponding to different speeds, substituting different speeds and motor energy consumption corresponding to each speed into a preset calculation formula, and subtracting each of the substituted calculation formulas to calculate the weight of the laundry in the drum, wherein the preset calculation formula is as follows:

[0010] E=2*M*π 2 *kR 2 *N 2 +E 0

[0011] Among them, E is the energy consumption of the motor, M is the weight of the laundry in the drum, R is the radius of the drum, N is the speed of the drum, and E 0 is the additional energy consumption, k is the proportionality coefficient, and 0<k≤1.

[0012] Further, after adding the laundry to the drum, the drum is controlled to rotate at a speed N 1 、N 2 Rotate, get and speed N 1 Corresponding motor energy consumption E 1 , and speed N 2 Corresponding motor energy consumption E 2 , N 1 With E 1 、N 2 With E 2 Substitute them into the calculation formula to calculate the weight of the laundry as follows:

[0013] M=2kπ 2 *R 2 *(N 1 2 -N 2 2 ) / (E 1 -E 2 )

[0014] Among them, N 1 ≠N 2 .

[0015] Further, the motor energy consumption E is obtained 1 、E 2 Before, control the addition of water into the cylinder to obtain the added water weight M 水 , correct the weight M of the laundry to be washed, and calculate the corrected weight M' = MM 水 .

[0016] Furthermore, before adding the laundry to the drum, the drum is controlled to rotate at a speed N 1 Rotate to obtain the energy consumption E corresponding to the motor 1 , N 1 、E 1 Substitute M=0 into the preset calculation formula to calculate the additional energy consumption E 0 =E 1 ;

[0017] After the laundry is added to the drum, the drum is controlled to rotate at a speed N 2 Rotate to obtain the energy consumption E corresponding to the motor 2 , N 2 、E 2 And the calculated E 0 Substituting into the calculation formula, the weight of the laundry to be washed is calculated as follows:

[0018] M=(E 2 -E 1 ) / 2kπ 2 *R 2 *N2 2 .

[0019] Further, the motor energy consumption E is obtained 2 Before, control the addition of water into the cylinder to obtain the added water weight M 水 , correct the weight M of the laundry to be washed, and calculate the corrected weight M' = MM 水 .

[0020] Furthermore, the different speeds and the motor energy consumption corresponding to each speed are substituted into the preset calculation formula to calculate the additional energy consumption E 0 And stored in the washing equipment, when weighed again, add the laundry to the drum and control the drum to rotate at a speed N 3 Rotate to obtain the energy consumption E corresponding to the motor 3 , N 3 、E 3 , stored E 0 Substituting into the calculation formula, the weight of the laundry in the drum is obtained as M = (E 3 -E 0 ) / 2kπ 2 *R 2 *N 3 2 ;

[0021] Preferably, N 3 =N 1 or N 3 =N 2 .

[0022] Furthermore, the preset usage period T 0 , self-washing equipment storage E 0 After that, the accumulated usage period T is started, and the accumulated usage period T is obtained before each weighing, and the obtained usage period T is compared with the preset usage period T 0 The size of 0 , the control recalculates and updates the stored E 0 ;

[0023] Alternatively, if the washing device receives a reset signal, the control recalculates and updates the stored E 0 .

[0024] Further, after the weight M of the laundry is calculated, the proportionality coefficient k is controlled to be in a negative correlation with the obtained weight M of the laundry, and then the weight M of the laundry is recalculated by adjusting the calculation formula after the proportionality coefficient k is adjusted.

[0025] Furthermore, the additional energy consumption E 0 =2*m*π 2 *R2 *N 2 +E n When calculating the weight M of the laundry to be washed, substitute it into the calculation formula for calculation, where m is the weight of the drum, which can be pre-stored in the washing equipment, and E n is the energy loss during the driving process.

[0026] A washing device is controlled using any of the above-mentioned washing device weighing methods.

[0027] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0028] 1. By controlling the multiple rotations of the drum of the washing equipment, the motor energy consumption corresponding to different speeds is obtained, and the data is substituted into the preset calculation formula to obtain the weight M of the laundry in the drum. In this way, the weighing data of each washing equipment can be obtained in a targeted manner, avoiding the weighing error caused by individual differences in the manufacturing of washing equipment.

[0029] 2. Before weighing the laundry in the washing equipment, add water to the drum so that the laundry in the drum will increase weight and soften after being wetted, so that the laundry sticks to the drum, increasing the accuracy of weighing.

[0030] 3. The energy consumption E obtained by 0 Storage can make it possible to control the cylinder to rotate only once for each subsequent weighing, thereby improving the weighing efficiency.

[0031] 4. Periodic update energy consumption E 0 , which can make the energy consumption E 0 It changes with the working conditions of the washing equipment, effectively improving the weighing accuracy of the washing equipment during long-term use.

[0032] 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

[0033] 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:

[0034] Figure 1 It is a weighing method of the washing equipment of the present invention;

[0035] Figure 2 It is another weighing method of the washing equipment of the present invention;

[0036] Figure 3 It is another weighing method of the washing equipment of the present invention;

[0037] Figure 4 It is another weighing method of the washing equipment of the present invention;

[0038] Figure 5 It is another weighing method of the washing equipment of the present invention;

[0039] Figure 6 It is another weighing method of the washing equipment of the present invention;

[0040] Figure 7 It is another weighing method of the washing equipment of the present invention;

[0041] Figure 8 It is another weighing method of the washing device of the present invention.

[0042] 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

[0043] 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.

[0044] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0045] 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.

[0046] The present invention proposes a Figures 1 to 8The washing device weighing method and washing device shown in the figure, the washing device refers to a device for washing clothes, such as a washing machine, etc. The washing device has a drum for accommodating the clothes to be washed, and water will also enter the drum during washing. Weighing refers to weighing the weight of the clothes to be washed in the drum, which can be used to adjust washing parameters such as the amount of washing water, washing time, and clothing treatment dosage.

[0047] The washing device also includes a motor that provides power to the drum, and when the motor rotates, the drum also rotates. The drum can be controlled to rotate at multiple speeds, which can be achieved by controlling the motor to rotate at different speeds or by controlling the transmission device between the motor and the drum to change the transmission ratio.

[0048] The drum is controlled to rotate at different speeds, the motor energy consumption corresponding to the different speeds is obtained, the different speeds and the motor energy consumption corresponding to each speed are substituted into a preset calculation formula, and the calculation formulas after each substitution are subtracted to calculate the weight of the laundry in the drum. The preset calculation formula is as follows:

[0049] E=2*M*π 2 *kR 2 *N 2 +E 0

[0050] Among them, E is the energy consumption of the motor, M is the weight of the laundry in the drum, R is the radius of the drum, N is the speed of the drum, and E 0 is the additional energy consumption, k is the proportionality coefficient, and 0<k≤1.

[0051] The motor energy consumption E can be obtained by various methods, such as monitoring the current and voltage of the motor, calculating the real-time power of the motor, and then calculating the energy consumption of the motor.

[0052] The additional energy consumption E 0 It includes the kinetic energy obtained by the drum itself, the energy consumption of motor heating, the energy consumption in the transmission process, etc., which are not converted into the kinetic energy of the clothes to be washed in the drum.

[0053] In this calculation formula, 2*M*π 2 *kR 2 *N 2 That is the kinetic energy obtained by the laundry, according to the formula E K =M*V 2 / 2, where E K It refers to the kinetic energy of the laundry, and V refers to the linear speed of the laundry.

[0054] Furthermore, when the drum rotates, the laundry is subjected to the centrifugal force and rotates against the inner wall of the drum, so its movement radius is the radius R of the drum. By converting the angular velocity and linear velocity, V = 2π*R*N, we can get E K=2*M*π 2 *kR 2 *N 2 .

[0055] From the above, we can know that in the calculation formula E = 2*M*π 2 *kR 2 *N 2 +E 0 The unknowns are M and E. 0 Furthermore, M and E can be obtained by substituting two sets of different speeds and corresponding motor energy consumption data. 0 .

[0056] In the present invention, by rotating the drum of the washing device multiple times, different rotation speeds and corresponding motor energy consumption data are obtained, and the data is substituted into a preset calculation formula to obtain the weight M of the laundry in the drum. This data is obtained separately from each washing device after leaving the factory, and the weight of the laundry in each washing device can be accurately obtained, effectively avoiding the weighing error caused by the manufacturing difference of the washing device.

[0057] As an embodiment of the present invention, the main factor affecting the weighing accuracy of the washing equipment is the additional energy consumption E 0 Therefore, if the additional energy consumption E can be determined 0 , the weighing can be completed accurately.

[0058] If the washing equipment is completed, the additional energy consumption E 0 It is technically possible to measure the washing equipment, but it takes a certain amount of time. For production lines that manufacture washing equipment in large quantities, it will seriously slow down the efficiency of washing equipment leaving the factory. Figure 1 As shown, the following method is used:

[0059] S1: Start;

[0060] S2: Add the laundry to the drum;

[0061] S3: Control the cylinder to rotate at a speed N 1 Rotate to obtain the energy consumption E of the motor 1 ;

[0062] S4: Control the cylinder to rotate at a speed N 2 Rotate to obtain the energy consumption E of the motor 2 , N 1 ≠N 2 ;

[0063] S5: Get N 1 With E 1 、N 2 With E 2Substitute them into the above calculation formulas to obtain the weight M of the laundry in the drum;

[0064] S6: End.

[0065] Among them, S3-S6 can be performed after adding water into the cylinder, and can also be performed before adding water into the cylinder.

[0066] When S3-S6 are performed before adding water into the drum, the weight M obtained in step S5 is the weight of the laundry.

[0067] In step S5, the weight M of the laundry is calculated as: M = 2kπ 2 *R 2 *(N 1 2 -N 2 2 ) / (E 1 -E 2 ).

[0068] In this embodiment, by adding the laundry to the drum and rotating it twice at different speeds, two sets of different speed and motor energy consumption parameters are obtained. After substituting them into the calculation formula, the weight M of the laundry and the additional energy consumption E can be calculated. 0 . Thus, the weight M of the laundry can be obtained.

[0069] As an implementation method of this embodiment, after the laundry is put into the drum, because the laundry may be relatively light or have a certain hardness, the laundry may not be completely attached to the drum when the drum rotates, resulting in the weighing method of the present invention that uses the drum radius as the rotation radius of the laundry is not accurate enough. Figure 2 As shown, the following method is used:

[0070] S1: Start;

[0071] S2: Add the laundry to the drum;

[0072] S3: Control the addition of water into the cylinder and obtain the added water weight M 水 ;

[0073] S4: Control the cylinder to rotate at a speed N 1 Rotate to obtain the energy consumption E of the motor 1 ;

[0074] S5: Control the cylinder to rotate at a speed N 2 Rotate to obtain the energy consumption E of the motor 2 , N 1 ≠N 2 ;

[0075] S6: Get N1 With E 1 、N 2 With E 2 Substitute into the above calculation formula to obtain the weight M of the laundry in the drum;

[0076] S7: Correct the weight M of the laundry to be washed, and calculate the corrected weight M'=MM 水 ;

[0077] S8: End.

[0078] In step S3, adding water requires obtaining the motor energy consumption E 1 and E 2 before it is completed and stopped.

[0079] In this embodiment, by adding water before obtaining the motor energy consumption, the laundry can be soaked, softened, and increased in weight, so that the laundry sticks to the drum when the drum rotates, so as to ensure the accuracy of weighing. The weight M obtained at this time is the total weight of the laundry and water, which is corrected to remove the weight M of the water. 水 That is the actual weight M' of the laundry after correction.

[0080] Furthermore, the water absorption of different materials of laundry varies greatly. If the laundry has not effectively absorbed water when weighing, it may cause the laundry to still not be able to cling to the inner wall of the drum. Figure 3 As shown, the following methods can be used:

[0081] Step S3 includes:

[0082] S31: Control the addition of water into the cylinder and obtain the added water weight M 水 ;

[0083] S32: Control the cylinder to rotate at a speed N 4 Rotate to set time, N 4 <N 1 And N 4 <N 2 ;

[0084] Among them, the preferred value of the set time is 10 minutes.

[0085] After adding water into the drum, the laundry cannot absorb all the water instantly, especially some of the laundry absorbs water at a low speed. Before weighing, control the drum to rotate at a lower speed to pre-wash the laundry, which can speed up the wetting of the laundry and obtain a better wall-adhering effect when weighing.

[0086] Furthermore, adding water before weighing is only to make the laundry stick to the wall when weighing, making the weighing more accurate. However, this amount of water may not meet the needs of washing. In order to ensure that there is enough water for washing, Figure 3 As shown, take the following approach:

[0087] S11: Start;

[0088] S12: Preset the weight of the laundry M' and the weight of the washing water M 洗 The corresponding relationship;

[0089] S2: Add the laundry to the drum;

[0090] S31: Control the addition of water into the cylinder and obtain the added water weight M 水 ;

[0091] S32: Control the cylinder to rotate at a speed N 4 Rotate to set time, N 4 <N 1 And N 4 <N 2 ;

[0092] S4: Control the cylinder to rotate at a speed N 1 Rotate to obtain the energy consumption E of the motor 1 ;

[0093] S5: Control the cylinder to rotate at a speed N 2 Rotate to obtain the energy consumption E of the motor 2 , N 1 ≠N 2 ;

[0094] S6: Get N 1 With E 1 、N 2 With E 2 Substitute into the above calculation formula to obtain the weight M of the laundry in the drum;

[0095] S71: Correct the weight M of the laundry to be washed, and calculate the corrected weight M'=MM 水 ;

[0096] S72: Select the weight M of washing water according to the weight M' of the laundry to be washed 洗 ;

[0097] S73: Comparison M 洗 With M 水 The size of M 洗 ≥M 水 , then execute S74, otherwise execute S75;

[0098] S74: Control the water supply to the washing equipment to M 洗 , execute S75;

[0099] S75: Continue washing and execute S8;

[0100] S8: End.

[0101] After weighing is completed, the water intake is corrected according to the accurate weighing results to effectively improve the washing effect.

[0102] As another embodiment of the present invention, each time the washing is weighed, the drum needs to be controlled to rotate twice for weighing, which not only wastes energy, but also wastes time and affects the washing efficiency. Figure 4 As shown, take the following approach:

[0103] S1: Start;

[0104] S2: Add the laundry to the drum;

[0105] S31: Determine whether there is energy consumption E stored in the washing device 0 , if not, execute S32, otherwise execute S33;

[0106] S32: Control the cylinder to rotate at a speed N 1 Rotate to obtain the energy consumption E of the motor 1 , execute S4;

[0107] S33: Control the cylinder to rotate at a speed N 3 Rotate to obtain the energy consumption E of the motor 3 , execute S52;

[0108] S4: Control the cylinder to rotate at a speed N 2 Rotate to obtain the energy consumption E of the motor 2 , N 1 ≠N 2 , execute S51;

[0109] S51: Get N 1 With E 1 and N 2 With E 2 Substitute the above calculation formula to obtain the weight M of the laundry in the drum and the energy consumption E 0 , and the energy consumption E 0 Store in the washing device, and execute S6;

[0110] S52: Retrieve the energy consumption E stored in the washing equipment 0 , and the speed N 3 , obtained energy consumption E 3 Substitute the calculation formula to obtain the weight M of the laundry in the drum, and execute S6;

[0111] S6: End.

[0112] In step S52, the weight M of the laundry in the drum is calculated as M = (E 3 -E 0 ) / 2kπ 2 *R 2 *N 3 2 .

[0113] The energy consumption E 0 The weight of the laundry is stored in the washing machine. In subsequent washing, the weight of the laundry can be obtained by controlling the drum to rotate once after the laundry is put in, which simplifies the weighing process.

[0114] Generally speaking, the energy consumption E is obtained when the washing equipment is first weighed. 0 and store it.

[0115] Preferably, N 3 =N 1 or N 3 =N 2 .

[0116] When the cylinder rotates at different speeds, the kinetic energy obtained by the cylinder, the energy loss of power transmission, and the heat loss of the motor itself will all be different. 3 With N 1 or N 2 Similarly, the influence of the above differences on weighing accuracy can be reduced to a certain extent.

[0117] As an implementation method of this embodiment, during the use of the washing machine, its motor, transmission belt, etc. will age to a certain extent, and the gears, etc. will also experience certain wear and corrosion, causing its additional energy consumption E 0 Changes occur, affecting the accuracy of weighing. To solve this problem, Figure 5 As shown, take the following approach:

[0118] S1: Start;

[0119] S2: Add the laundry to the drum;

[0120] S31: Determine whether there is energy consumption E stored in the washing device 0 If not, execute S32, otherwise execute S331;

[0121] S32: Control the cylinder to rotate at a speed N 1 Rotate to obtain the energy consumption E of the motor 1 , execute S4;

[0122] S331: Preset usage period T 0 , control to obtain the accumulated usage period T, and execute S332;

[0123] S332: Compare the acquired usage period T with the preset usage period T 0 The size of 0 , then execute S32, otherwise execute S333;

[0124] S333: Control the cylinder to rotate at a speed N 3 Rotate to obtain the energy consumption E of the motor 3 , execute S52;

[0125] S4: Control the cylinder to rotate at a speed N 2 Rotate to obtain the energy consumption E of the motor 2 , N 1 ≠N 2 , execute S51;

[0126] S51: Get N 1 With E 1 、N 2 With E 2 Substitute the above calculation formula to obtain the weight M of the laundry in the drum and the energy consumption E 0 , control the energy consumption E 0 Stored in the washing device, start accumulating the usage period T, and execute S6;

[0127] S52: Retrieve the energy consumption E stored in the washing equipment 0 , and the speed N 3 , obtained energy consumption E 3 Substitute the calculation formula to obtain the weight M of the laundry in the drum, and execute S6;

[0128] S6: End.

[0129] The usage cycle can be the usage time or the number of washes. The usage time can be the time since the last storage energy consumption E 0 The time since the last storage of energy consumption E 0 The cumulative washing time after

[0130] Alternatively, if the washing device receives a reset signal, the control recalculates and updates the stored E 0 .

[0131] The reset signal may be used when the washing equipment is undergoing maintenance or other operations that may affect the energy consumption E 0 The device automatically issues a signal when the power is off, or the user manually chooses to reset the energy consumption E 0 When the control obtains and stores the new energy consumption E 0 .

[0132] In this embodiment, the energy consumption E is reset periodically or manually controlled by the user. 0, can effectively avoid energy consumption caused by aging and maintenance of washing equipment 0 Inaccurate weighing caused by changes.

[0133] As another embodiment of the present invention, when the washing device is weighed, if there are too many clothes to be washed, they will have a certain thickness in the radial direction of the drum. Even if the clothes to be washed are completely attached to the drum by immersing them in water, the weight of the clothes to be washed cannot be completely concentrated on the side wall of the drum, resulting in errors in the weight of the clothes to be washed calculated according to the calculation formula.

[0134] After the weight M of the laundry is calculated, the proportionality coefficient k is controlled to be in a negative correlation with the obtained weight M of the laundry, and then the weight M of the laundry is recalculated by the calculation formula after adjusting the proportionality coefficient k.

[0135] Alternatively, after adding the laundry to the drum, control the drum to rotate, and substitute the speed and the obtained motor energy consumption into E=2*M 模 *π 2 *R 2 *N 2 In, get M 模 , control the calculation formula E = 2*M*π 2 *kR 2 *N 2 +E 0 The k in and the obtained M 模 A negative correlation.

[0136] Among them, M 模 To set the additional energy consumption E 0 The weight of the laundry calculated when θ is 0 can reflect the actual weight to a certain extent, but it has a certain error.

[0137] By adjusting the coefficient k, when the weight of the laundry is large, it means that there are more laundry, its thickness in the radial direction of the drum is large, and the rotation radius of more laundry is smaller than the radius of the drum. At this time, k is reduced, and the calculation formula E = 2*M*π 2 *kR 2 *N 2 +E 0 The R in the formula plays a corrective role, thereby obtaining a more accurate weight M of the laundry.

[0138] As another embodiment of the present invention, the additional energy consumption E 0 It includes two parts, one is the kinetic energy obtained by the cylinder itself when it rotates, and the other is the energy loss of the motor itself and the energy loss during the transmission process. Among them, the kinetic energy obtained by the cylinder itself will change significantly with the speed. Therefore, in order to improve the weighing accuracy, it is necessary to further calculate this part of the kinetic energy that changes more significantly.

[0139] The additional energy consumption E 0 =2*m*π 2 *R 2 *N 2 +E n When calculating the weight M of the laundry, substitute it into the calculation formula and calculate, that is, E = 2*M*π 2 *kR 2 *N 2 +2*m*π 2 *R 2 *N 2 +E n .

[0140] Where m is the weight of the drum, which can be pre-stored in the washing equipment, E n is the energy loss during the driving process.

[0141] In this embodiment, by adding the additional energy consumption E 0 The additional energy consumption E can be calculated by calculating the kinetic energy of the cylinder 0 The calculation is more precise and the weighing results at different speeds will be more accurate.

[0142] As another embodiment of the present invention, Figure 6 As shown, the weighing method is as follows:

[0143] S1: Start;

[0144] S2: Control the empty cylinder to rotate at a speed N 1 Rotate to obtain the corresponding motor energy consumption E 1 ;

[0145] S3: Get the motor energy consumption E 1 Substitute into the above calculation formula to obtain the additional energy consumption E 0 ;

[0146] S4: putting the laundry into the drum;

[0147] S5: Control the cylinder to rotate at a speed N 2 Rotate to obtain the corresponding motor energy consumption E 2 ;

[0148] S6: N 2 With E 2 , obtained energy consumption E 0 Substituting into the calculation formula, the weight M of the laundry in the drum is obtained;

[0149] S7: End.

[0150] In this embodiment, the energy consumption E can be directly obtained by setting a drum rotation before the laundry is put in. 0 This process can be flexibly set to be carried out at the factory or after the user purchases it, which is more applicable.

[0151] Preferably, N 1 =N 2 .

[0152] When the drum speed is different, the energy consumption E 0 It will also change with the speed. Using the same speed during the two rotations can maintain the energy consumption E 0 It remains unchanged during two rotations, thus improving weighing accuracy.

[0153] As an implementation method of this embodiment, Figure 7 To avoid inaccurate weighing due to the laundry not being completely attached to the drum, the following methods can be used:

[0154] S1: Start;

[0155] S2: Control the empty cylinder to rotate at a speed N 1 Rotate to obtain the corresponding motor energy consumption E 1 ;

[0156] S3: Get the motor energy consumption E 1 Substitute into the above calculation formula to obtain the additional energy consumption E 0 ;

[0157] S41: putting the laundry into the drum;

[0158] S42: Control the addition of water into the cylinder and obtain the water inflow weight M 水 ;

[0159] S43: Control the cylinder to rotate at a speed N 4 Rotate to set time, N 4 <N 1 And N 4 <N 2 ;

[0160] S5: Control the cylinder to rotate at a speed N 2 Rotate to obtain the corresponding motor energy consumption E 2 ;

[0161] S61: N 2 With E 2 , obtained energy consumption E 0 Substituting into the calculation formula, the weight M of the laundry in the drum is obtained;

[0162] S62: Correct the weight M of the laundry to be washed, and calculate the corrected weight M'=MM 水 ;

[0163] S7: End.

[0164] Preferably, the speed N in step S5 2 260 rpm, maintain for 30 seconds.

[0165] Adding water to the cylinder requires obtaining the motor energy consumption E 2 Completed before.

[0166] In this embodiment, the second rotation of the drum is arranged after water is added to the drum, so that the laundry can be soaked through the water pre-washing, increase the weight and soften the laundry, promote the laundry to stick to the drum, and improve the weighing accuracy.

[0167] Furthermore, before the washing machine is filled with water, the drum can be controlled to rotate at a speed of 190 rpm for 30 seconds, the weight of the laundry to be put in can be weighed, and the amount of water entering can be controlled according to the weighing result. Although the weighing result is not accurate enough, it can be used to control the water intake required for accurate weighing.

[0168] As another implementation of this embodiment, in order to simplify the weighing process during multiple washings, Figure 8 As shown, the following methods can be adopted:

[0169] S1: Start;

[0170] S21: Preset usage period T 0 ;

[0171] S22: Determine whether energy consumption E is stored in the washing device 0 If not, execute S24, otherwise execute S23;

[0172] S23: Obtain the accumulated usage period T, and compare the accumulated usage period T with the preset usage period T 0 The size of 0 , then execute S24, otherwise execute S4;

[0173] S24: Control the empty cylinder to rotate at a speed N 1 Rotate to obtain the corresponding motor energy consumption E 1 ;

[0174] S3: Obtained motor energy consumption E 1 Substitute into the above calculation formula to obtain the additional energy consumption E 0 , and store it in the washing equipment, and execute S4;

[0175] S4: putting the laundry into the drum;

[0176] S5: Control the cylinder to rotate at a speed N 2 Rotate to obtain the corresponding motor energy consumption E 2 ;

[0177] S6: N 2 With E 2 , obtained energy consumption E 0 Substituting into the calculation formula, the weight M of the laundry in the drum is obtained;

[0178] S7: End.

[0179] In this embodiment, the energy consumption E 0 The energy consumption E is stored in the washing machine. In the subsequent washing, the weight of the laundry can be obtained by controlling the drum to rotate once after the laundry is put in, which simplifies the weighing process. 0 , can effectively avoid energy consumption caused by aging and maintenance of washing equipment 0 The present invention also provides a washing device, which refers to a device for washing clothes, such as a washing machine, etc. The washing device has a drum for accommodating the clothes to be washed, and water will also enter the drum during washing.

[0180] The washing device also includes a motor that provides power to the drum, and when the motor rotates, the drum also rotates. The drum can be controlled to rotate at multiple speeds, which can be achieved by controlling the motor to rotate at different speeds or by controlling the transmission device between the motor and the drum to change the transmission ratio.

[0181] The washing device includes a device capable of monitoring the energy consumption of the motor. As one implementation method, the washing device includes a current monitoring device and a voltage monitoring device for the motor.

[0182] The washing device comprises a water inlet pipeline for feeding water into the drum, and a water inlet sensor for measuring the amount of water inlet is arranged on the water inlet pipeline.

[0183] The washing device comprises a control module, and the control module is used to control the operation of the washing device and complete the calculations required for the operation of the washing device itself.

[0184] The washing device also includes an input button for a user to control the washing device, or other devices for manual input by the user, wherein the washing device can be controlled to reset the additional energy consumption E 0 The input button.

[0185] The washing device of the present invention is controlled by the weighing method of the present invention. When used by a user, the washing device can accurately weigh the laundry by controlling the drum to rotate multiple times, avoid weighing errors caused by individual differences in the washing device, and effectively improve weighing accuracy.

[0186] The above description 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 as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A weighing method for a washing device, the washing device comprising a drum and a motor for providing power for the rotation of the drum, Features: The drum is controlled to rotate at different speeds, the motor energy consumption corresponding to the different speeds is obtained, the different speeds and the motor energy consumption corresponding to each speed are substituted into a preset calculation formula, and the calculation formulas after each substitution are subtracted to calculate the weight of the laundry in the drum. The preset calculation formula is as follows: E=2*M*π 2 *kR 2 *N 2 +E 0 Among them, E is the energy consumption of the motor, M is the weight of the laundry in the drum, R is the radius of the drum, N is the speed of the drum, and E 0 is the additional energy consumption, k is the proportionality coefficient, and 0<k≤1.

2. A weighing method for washing equipment according to claim 1, Features: After adding the laundry to the drum, control the drum to rotate at a speed N 1 、N 2 Rotate, get and speed N 1 Corresponding motor energy consumption E 1 , and speed N 2 Corresponding motor energy consumption E 2 , N 1 With E 1 、N 2 With E 2 Substitute them into the calculation formula to calculate the weight of the laundry as follows: M=2kπ 2 *R 2 *(N 1 2 -N 2 2 ) / (AND 1 -AND 2 ) Among them, N 1 ≠N 2 .

3. A weighing method for washing equipment according to claim 2, Features: Get the motor energy consumption E 1 、E 2 Before, control the addition of water into the cylinder to obtain the added water weight M 水 , correct the weight M of the laundry to be washed, and calculate the corrected weight M' = MM 水 .

4. A weighing method for washing equipment according to claim 1, Features: Before adding the laundry to the drum, control the drum to rotate at a speed N 1 Rotate to obtain the energy consumption E corresponding to the motor 1 , N 1 、E 1 Substitute M=0 into the preset calculation formula to calculate the additional energy consumption E 0 =E 1 ; After the laundry is added to the drum, the drum is controlled to rotate at a speed N 2 Rotate to obtain the energy consumption E corresponding to the motor 2 , N 2 、E 2 And the calculated E 0 Substituting into the calculation formula, the weight of the laundry to be washed is calculated as follows: M=(E 2 -AND 1 ) / 2kπ 2 *R 2 *N 2 2 。 5. A weighing method for washing equipment according to claim 4, Features: Get the motor energy consumption E 2 Before, control the addition of water into the cylinder to obtain the added water weight M 水 , correct the weight M of the laundry to be washed, and calculate the corrected weight M' = MM 水 .

6. A weighing method for a washing device according to any one of claims 1 to 5, Features: Substitute different speeds and the motor energy consumption corresponding to each speed into the preset calculation formula to calculate the additional energy consumption E 0 And stored in the washing equipment, when weighed again, add the laundry to the drum and control the drum to rotate at a speed N 3 Rotate to obtain the energy consumption E corresponding to the motor 3 , N 3 、E 3 , stored E 0 Substituting into the calculation formula, the weight of the laundry in the drum is obtained as M = (E 3 -E 0 ) / 2kπ 2 *R 2 *N 3 2 ; Preferably, N 3 =N 1 or N 3 =N 2 .

7. A weighing method for washing equipment according to claim 6, Features: Default usage period T 0 , self-washing equipment storage E 0 After that, the accumulated usage period T is started, and the accumulated usage period T is obtained before each weighing, and the obtained usage period T is compared with the preset usage period T 0 The size of 0 , the control recalculates and updates the stored E 0 ; Alternatively, if the washing device receives a reset signal, the control recalculates and updates the stored E 0 .

8. A weighing method for a washing device according to any one of claims 1 to 5, Features: After the weight M of the laundry is calculated, the proportionality coefficient k is controlled to be in a negative correlation with the obtained weight M of the laundry, and then the weight M of the laundry is recalculated by the calculation formula after adjusting the proportionality coefficient k.

9. A weighing method for a washing device according to any one of claims 1 to 5, Features: The additional energy consumption E 0 =2*m*π 2 *R 2 *N 2 +E n When calculating the weight M of the laundry to be washed, substitute it into the calculation formula for calculation, where m is the weight of the drum, which can be pre-stored in the washing equipment, and E n is the energy loss during the driving process.

10. A washing device, Features: The washing equipment is controlled by the weighing method described in any one of claims 1 to 9.

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