Detergent dispensing method and washing machine

Abstract

The present invention discloses a detergent dispensing method and a washing machine. After a washing program starts, detergent is dispensed for the first time according to a set amount, a second detergent dispensing amount is detected and calculated based on a first detergent concentration, detergent is dispensed for the second time according to the second detergent dispensing amount and a second detergent concentration is detected, a difference between the first detergent concentration and the second detergent concentration is compared, and when the difference is less than the set concentration difference and the detergent dispensing amount reaches the second detergent dispensing amount, detergent dispensing is stopped, and when the difference is greater than the set concentration and the detergent dispensing amount has not reached the second detergent dispensing amount, a third detergent dispensing amount is calculated based on the actual second detergent dispensing amount and the second detergent concentration for the third dispensing; through two dispensings and detection and comparison of real-time detergent concentrations after the two dispensings, the dispensing amount is corrected in real time, so that the detergent dispensing amount is more accurate, thereby solving the technical problem of inaccurate detergent dispensing amount in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of washing machines, and in particular relates to a detergent dispensing method and a washing machine. Background Art

[0002] Existing washing machines are usually equipped with a detergent box. When the washing machine is working, the controller estimates the amount of detergent required based on the weight of the clothes or the amount of water, and then controls the solenoid valve connected to the detergent box to dispense the estimated amount of detergent, thereby achieving the purpose of automatic detergent dispensing.

[0003] In actual applications, since the concentrations of detergents of different brands are different, it is necessary to detect the concentration of detergents during detergent dispensing and estimate the dispensing amount based on the concentration of detergents to avoid the problem of excessive or insufficient detergent dispensing due to different detergent concentrations. In existing applications, sensor devices are usually used to detect the concentration of detergents during the dispensing process, but there are the following problems: the detection results of the sensor devices are delayed, resulting in a difference between the actual dispensing amount and the estimated dispensing amount, which still causes technical problems of inaccurate dispensing. Summary of the invention

[0004] The present application provides a detergent dispensing method and a washing machine, which solve the technical problem of inaccurate detergent dispensing amount in the prior art.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] A detergent dosing method is proposed, comprising: after a washing program starts, dosing detergent for the first time according to a set amount; detecting a first detergent concentration and calculating a second detergent dosing amount based on the first detergent concentration; dosing detergent for the second time according to the second detergent dosing amount and detecting a second detergent concentration; comparing a difference between the first detergent concentration and the second detergent concentration, and stopping dosing detergent when the difference is less than the set concentration difference and the detergent dosing amount reaches the second detergent dosing amount.

[0007] Furthermore, if the difference is greater than the set concentration and the amount of detergent added has not reached the second amount of detergent added, the method also includes: stopping the second addition, and calculating the third amount of detergent added based on the actual second amount of detergent added and the second detergent concentration; and adding detergent for the third time according to the third amount of detergent added.

[0008] Furthermore, before adding detergent for the first time according to the set amount, the method also includes: calculating the first detergent addition amount according to a preset logic, and comparing the first detergent addition amount with the set amount; if the first detergent addition amount is greater than the set amount, adding detergent for the first time according to the set amount, otherwise, performing washing after adding detergent according to the first detergent addition amount; wherein, in calculating the first detergent addition amount according to the preset logic, the detergent concentration value used is the set concentration value.

[0009] Furthermore, the set concentration value is the detergent concentration value last measured during the last detergent addition process.

[0010] A washing machine is proposed, comprising a first dispensing module, a detergent concentration detection module, a second detergent dispensing amount calculation module, a second dispensing module, a comparison module and a dispensing control module; the first dispensing module is used to dispense detergent for the first time according to a set amount after a washing program starts; the detergent concentration detection module is used to detect a first detergent concentration after the detergent is dispensed for the first time according to the set amount; the second detergent dispensing amount calculation module is used to calculate a second detergent dispensing amount based on the first detergent concentration; the second dispensing module is used to dispense detergent for the second time according to the second detergent dispensing amount; the detergent concentration detection module is used to detect a second detergent concentration after the detergent is dispensed for the second time according to the second detergent dispensing amount; the comparison module is used to compare the difference between the first detergent concentration and the second detergent concentration; the dispensing control module is used to control the dispensing of detergent to be stopped when the difference is less than the set concentration and the detergent dispensing amount of the second dispensing module reaches the second detergent dispensing amount.

[0011] Furthermore, if the comparison module compares the difference to be greater than the set concentration, and the detergent dosage of the second dosage module has not reached the second detergent dosage, the dosage control module controls the second dosage module to stop the second dosage; the washing machine also includes a third detergent dosage calculation module and a third dosage module; the third detergent dosage calculation module calculates the third detergent dosage based on the actual second detergent dosage and the second detergent concentration; the third dosage module is used to dispense detergent for the third time according to the third detergent dosage.

[0012] Furthermore, the washing machine also includes a first detergent dosage calculation module, a pre-dose comparison module, a washing control module and a storage module; the first detergent dosage calculation module is used for calculating the first detergent dosage according to a preset logic before the first dosage module dispenses detergent for the first time according to the set amount; the pre-dose comparison module is used for comparing the first detergent dosage with the set amount; if the first detergent dosage is greater than the set amount, the first dosage module dispenses detergent for the first time according to the set amount, otherwise, after the first dosage module dispenses detergent according to the first detergent dosage, the washing control module controls the washing to be performed; wherein, in calculating the first detergent dosage according to the preset logic, the detergent concentration value used is the set concentration value; the set concentration value is stored in the storage module.

[0013] Furthermore, the washing machine also includes a recording module for recording the detergent concentration value last measured during the last detergent delivery process and storing it in the storage module as the set concentration value.

[0014] Furthermore, the detergent concentration detection module includes a box body, detection electrodes and a signal processing circuit, the detection electrodes are installed in the box body and fixed in parallel on the side walls of the box body; the box body is installed between the detergent box of the washing machine and the outlet of the delivery pipeline.

[0015] Compared with the prior art, the advantages and positive effects of the present application are as follows: in the detergent dispensing method and washing machine proposed in the present application, after the washing program starts, the first detergent dispensing is performed according to the set amount A, then the first detergent concentration is detected, and the second detergent dispensing amount is calculated based on the first detergent concentration, and the second detergent dispensing is performed according to the calculated second detergent dispensing amount. After dispensing, the second detergent concentration is detected, and then the difference between the first detergent concentration and the second detergent concentration is compared, and different subsequent operations are performed according to different differences. When the difference is less than the set concentration difference and the second detergent dispensing amount reaches the second detergent dispensing amount, the detergent dispensing is stopped and the washing operation is started. If the second detergent dispensing amount has not reached the second detergent dispensing amount when the difference is greater than the set concentration difference, the third detergent dispensing amount needs to be calculated for dispensing; in the detergent dispensing process, the dispensing amount is corrected in real time by detecting and comparing the real-time detergent concentrations after two dispensings and after the two dispensings, so that the detergent dispensing amount is more accurate, thereby solving the technical problem of inaccurate detergent dispensing amount in the prior art.

[0016] After reading the detailed description of the embodiments of the present application in conjunction with the accompanying drawings, other features and advantages of the present application will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A flow chart of the detergent dispensing method proposed in this application;

[0018] Figure 2 A flow chart of the detergent dispensing method proposed in this application;

[0019] Figure 3 This is a functional architecture diagram of the washing machine proposed in this application. DETAILED DESCRIPTION

[0020] The specific implementation of the present application is further described in detail below with reference to the accompanying drawings.

[0021] The detergent delivery method proposed in this application is as follows: Figure 1 As shown, the following steps are included:

[0022] After the washing program starts, step S11: adding detergent for the first time according to the set amount.

[0023] The set amount A is a preset fixed amount, which is the minimum amount required to meet the measurement concentration.

[0024] Step S12: Detecting the first detergent concentration, and calculating the second detergent dosage based on the first detergent concentration.

[0025] After the first set amount of detergent is dispensed, the first detergent concentration C1 is detected by the detergent concentration detection module, and the second detergent dosage B required for the second dosage is calculated according to the first detergent concentration C1.

[0026] Step S13: Adding detergent for a second time according to the second detergent addition amount and detecting the second detergent concentration.

[0027] After calculating the second detergent dosage B, the second detergent dosage is performed according to the dosage B, and the second detergent concentration C2 is detected after the dosage.

[0028] Step S14: comparing the difference between the first detergent concentration and the second detergent concentration.

[0029] In the prior art, the addition of detergent is usually stopped and the washing work is started after the second addition. In the present application, in order to achieve more accurate addition, after the second addition, the difference ΔC between the first detergent concentration C1 and the second detergent concentration C2 is compared. The set concentration difference CX is a preset tolerance value of the detergent concentration. When the difference ΔC between the two detergent concentrations is less than the set concentration difference CX and the amount of detergent added reaches the second detergent addition amount B, the addition of detergent is stopped and the subsequent washing work is performed. If the difference ΔC is greater than the set concentration and the amount of detergent added has not reached the second detergent addition amount, the detergent addition method proposed in the present application further includes:

[0030] Step S15: stop the second addition, and calculate the third detergent addition amount B2 based on the actual second detergent addition amount B1 and the second detergent concentration C2; Step S16: add detergent for the third time according to the third detergent addition amount B2, and after the third addition, when the detergent addition amount reaches the calculated second detergent addition amount B, stop adding and perform washing, or, perform washing after the third detergent addition amount B2 is completed.

[0031] In the above-mentioned detergent dispensing process, the dispensing amount is corrected in real time by detecting and comparing the detergent concentrations during two dispensings and after the two dispensings, so that the detergent dispensing amount is more accurate, thereby solving the technical problem of inaccurate detergent dispensing amount in the prior art.

[0032] In the embodiment of the present application, before the detergent is added for the first time according to the set amount A, Figure 2 As shown, it also includes:

[0033] Step S21: Calculate the first detergent dosage according to the preset logic.

[0034] In the embodiment of the present application, in order to improve the accuracy of the amount of detergent added, for the first time the amount of detergent added, it is determined whether to use the set amount A according to different situations; specifically, a first detergent amount A1 is calculated according to a preset logic, wherein in calculating the first detergent amount A1 according to the preset logic, the detergent concentration value used is the set concentration value C0, and the set concentration value C0 is set to a common detergent concentration value, usually 20%.

[0035] Step S22: Compare the first detergent dosage A1 with the set dosage A; if the first detergent dosage A1 is greater than the set dosage A, then the detergent is first added according to the set dosage A, that is, the process proceeds to step S11 to perform batch additions; if the first detergent dosage A1 is less than the set dosage A, step S22: directly add detergent according to the first detergent dosage A1 and then perform washing.

[0036] When calculating the first detergent dosage A1, the set concentration value C0 can be stored in the storage module. In the embodiment of the present application, the set concentration value C0 preferably uses the detergent concentration value last measured during the previous detergent dosage process. If it is calculated for the first time, since there is no previous record, the pre-set concentration value is used.

[0037] In actual applications, the conditions for using the set concentration value can be set, such as using the user-set value after the user manually sets it, resetting to the factory setting value after the automatic detergent dispensing function is not used for a set period of time, obtaining the identification concentration value through sensor recognition after the user adds detergent, etc.

[0038] Based on the above-mentioned detergent delivery method, the present application proposes a washing machine, such as Figure 3 As shown, it includes a first dispensing module 31, a detergent concentration detection module 32, a second detergent dispensing amount calculation module 33, a second dispensing module 34, a comparison module 35 and a dispensing control module 36.

[0039] The first dispensing module 31 is used to dispense detergent for the first time according to the set amount after the washing program starts; the detergent concentration detection module 32 is used to detect the first detergent concentration after the detergent is dispensed for the first time according to the set amount; the second detergent dispensing amount calculation module 33 is used to calculate the second detergent dispensing amount based on the first detergent concentration; the second dispensing module 34 is used to dispense detergent for the second time according to the second detergent dispensing amount; the detergent concentration detection module 32 is also used to detect the second detergent concentration after the detergent is dispensed for the second time according to the second detergent dispensing amount; the comparison module 35 is used to compare the difference between the first detergent concentration and the second detergent concentration; the dispensing control module 36 is used to control the stopping of detergent dispensing when the difference is less than the set concentration and the detergent dispensing amount of the second dispensing module reaches the second detergent dispensing amount.

[0040] As mentioned above, if the comparison difference of the comparison module 35 is greater than the set concentration, and the detergent dosage of the second dosage module 34 has not reached the second detergent dosage, the dosage control module 36 controls the second dosage module to stop the second dosage; the washing machine proposed in this application also includes a third detergent dosage calculation module 37 and a third dosage module 38; the third detergent dosage calculation module 37 calculates the third detergent dosage based on the actual second detergent dosage and the second detergent concentration; the third dosage module 38 is used to dispense detergent for the third time according to the third detergent dosage.

[0041] In the embodiment of the present application, the washing machine also includes a first detergent dosage calculation module 39, a pre-dose comparison module 40, a washing control module 41 and a storage module 42; the first detergent dosage calculation module 39 is used for the first detergent dosage calculation module 39 to calculate the first detergent dosage according to a preset logic before the first dosage module 31 dispenses detergent for the first time according to the set amount; the pre-dose comparison module 40 is used to compare the first detergent dosage and the set amount; if the first detergent dosage is greater than the set amount, the first dosage module 31 dispenses detergent for the first time according to the set amount, otherwise, after the first dosage module 31 dispenses detergent according to the first detergent dosage, the washing control module 41 controls the washing; wherein, in calculating the first detergent dosage according to the preset logic, the detergent concentration value used is the set concentration value; the set concentration value is stored in the storage module 42.

[0042] In the embodiment of the present application, the washing machine further includes a recording module 43 for recording the detergent concentration value last measured during the last detergent addition process and storing it in the storage module 42 as a set concentration value.

[0043] In an embodiment of the present application, a detergent concentration detection module includes a box body, a detection electrode and a signal processing circuit, wherein the detection electrode is installed in the box body and fixed in parallel on the side wall of the box body; the box body is installed between the detergent box of the washing machine and the outlet of the delivery pipeline; the detection electrode detects the liquid to be detected that it contacts based on the conductivity of the liquid, and returns a detection signal to the signal processing circuit, and the signal processing circuit sends the processed signal to the controller of the washing machine for delivery; in order to ensure the consistency of the output signal, the length of the detection electrode extending into the liquid to be detected remains constant; in order to ensure that the liquid to be detected fills the box body and the detection electrode fully contacts the liquid to be detected, the box body is installed between the detergent box and the outlet of the delivery pipeline and away from the outlet.

[0044] The detergent dispensing method and washing machine proposed in the present application correct the detergent dispensing amount in real time by performing two dispensings and detecting and comparing the real-time detergent concentrations after the two dispensings during the detergent dispensing process, thereby making the detergent dispensing amount more accurate and solving the technical problem of inaccurate detergent dispensing amount in the prior art.

[0045] It should be pointed out that the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A method for dispensing a detergent, characterized in that: include: After the washing program starts, add detergent for the first time according to the set amount; detecting a first detergent concentration, and calculating a second detergent dosage based on the first detergent concentration; Adding detergent for a second time according to the second detergent addition amount and detecting the second detergent concentration; comparing the difference between the first detergent concentration and the second detergent concentration, and stopping the addition of detergent when the difference is less than a set concentration difference and the amount of detergent added reaches the second amount of detergent added; Before adding detergent for the first time according to the set amount, the method further includes: The first detergent dosage is calculated according to the preset logic, and the first detergent dosage is compared with the set dosage; if the first detergent dosage is greater than the set dosage, the detergent is firstly added according to the set dosage, otherwise, the washing is performed after the detergent is added according to the first detergent dosage; wherein, In calculating the first detergent dosage according to the preset logic, the detergent concentration value used is the set concentration value.

2. The detergent dispensing method according to claim 1, characterized in that: If the difference is greater than the set concentration and the amount of detergent added has not reached the second amount of detergent added, the method further includes: Stop the second detergent dispensing, and calculate the third detergent dispensing amount based on the actual second detergent dispensing amount and the second detergent concentration; Detergent is added for the third time according to the third detergent addition amount.

3. The detergent dispensing method according to claim 1, characterized in that: The set concentration value is the detergent concentration value last measured during the last detergent addition process.

4. A washing machine, characterized in that It includes a first dispensing module, a detergent concentration detection module, a second detergent dispensing amount calculation module, a second dispensing module, a comparison module and a dispensing control module; The first dispensing module is used to dispense detergent for the first time according to the set amount after the washing program starts; the detergent concentration detection module is used to detect the first detergent concentration after the detergent is dispensed for the first time according to the set amount; the second detergent dispensing amount calculation module is used to calculate the second detergent dispensing amount based on the first detergent concentration; the second dispensing module is used to dispense detergent for the second time according to the second detergent dispensing amount; the detergent concentration detection module is used to detect the second detergent concentration after the detergent is dispensed for the second time according to the second detergent dispensing amount; the comparison module is used to compare the difference between the first detergent concentration and the second detergent concentration; the dispensing control module is used to control the dispensing of detergent to be stopped when the difference is less than the set concentration and the detergent dispensing amount of the second dispensing module reaches the second detergent dispensing amount; The washing machine also includes a first detergent dosage calculation module, a pre-dosing comparison module, a washing control module and a storage module; The first detergent dispensing amount calculation module is used for calculating the first detergent dispensing amount according to a preset logic before the first dispensing module dispenses detergent for the first time according to the set amount; The pre-dispensing comparison module is used to compare the first detergent dispensing amount with the set amount; If the first detergent delivery amount is greater than the set amount, the first delivery module delivers detergent for the first time according to the set amount; otherwise, after the first delivery module delivers detergent according to the first detergent delivery amount, the washing control module controls the washing process; wherein, In calculating the first detergent dosage according to the preset logic, the detergent concentration value used is the set concentration value; The set concentration value is stored in the storage module.

5. The washing machine according to claim 4, characterized in that: If the comparison module compares the difference value to be greater than the set concentration, and the detergent dosage of the second dosage module has not reached the second detergent dosage, the dosage control module controls the second dosage module to stop the second dosage; The washing machine also includes a third detergent dosage calculation module and a third dosage module; the third detergent dosage calculation module calculates the third detergent dosage based on the actual second detergent dosage and the second detergent concentration; the third dosage module is used to dispense detergent for the third time according to the third detergent dosage.

6. The washing machine according to claim 4, characterized in that: The washing machine further comprises a recording module for recording the detergent concentration value last measured during the last detergent delivery process and storing the value in the storage module as the set concentration value.

7. The washing machine according to claim 4, characterized in that: The detergent concentration detection module includes a box body, detection electrodes and a signal processing circuit. The detection electrodes are installed in the box body and fixed in parallel on the side wall of the box body. The box body is installed between the detergent box of the washing machine and the outlet of the delivery pipeline.

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