CN109208232B - Method for accurately controlling dosage of detergent and washing machine - Google Patents
Method for accurately controlling dosage of detergent and washing machine Download PDFInfo
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- CN109208232B CN109208232B CN201710524670.7A CN201710524670A CN109208232B CN 109208232 B CN109208232 B CN 109208232B CN 201710524670 A CN201710524670 A CN 201710524670A CN 109208232 B CN109208232 B CN 109208232B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
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- D06F2204/02—
Abstract
The invention discloses a method for accurately controlling the dosage of detergent and a washing machine, comprising the following steps: establishing N concentration intervals according to the sequence from low to high; assigning a concentration grade to each concentration interval, wherein the ith concentration interval corresponds to the ith concentration grade Ci = i, i =1, … …, N, N < 7; determining a concentration level Ci of detergent in the washing machine; acquiring the weight m of the washed clothes; using the formula Vn =1.25 m (7-Ci), the amount of detergent Vn is calculated. The invention comprehensively considers two factors of the concentration of the detergent and the weight of the washed clothes, and determines the dosage of the detergent by adopting a formula calculation method, thereby realizing the accurate control of the dosage of the detergent, effectively avoiding the problem that the dosage of the concentrated detergent is easy to generate excessive dosage when determining the dosage of the detergent according to the weight of the clothes, and solving the problems of residual detergent, increased foam, multiple rinsing, water and electricity waste and the like caused by excessive dosage.
Description
Technical Field
The invention belongs to the technical field of washing equipment, and particularly relates to a method for automatically controlling the dosage of a detergent according to the concentration of the detergent and a washing machine.
Background
The washing machine is a special cleaning device for washing clothes, cotton, hemp, chemical fiber and other textiles, the current washing machine, whether a full-automatic washing machine or a semi-automatic washing machine, basically has three basic functions of washing, rinsing and dewatering, the labor intensity of people is reduced to a certain extent, and the life of people is comfortable. Moreover, with the development of society, the demands of people on living quality are gradually increased and the demands of people on intelligent products are continuously increased, and the washing machine is rapidly developing towards intellectualization.
The current intelligent washing machine mainly has the function of automatically putting detergent or the function of WiFi control. For the washing machine with the automatic detergent feeding function, the using amount of the detergent can be automatically judged according to the weight of the washed clothes, and then the corresponding amount of the detergent is fed through the automatic feeding device, so that the automatic feeding function of the detergent is realized.
However, the types of detergents on the market are various, and there are various types such as a general detergent with a concentration of 15% to 25%, a concentrated detergent with a concentration of 25% to 35%, a high-concentrated detergent with a concentration of 35% to 45%, and a super-concentrated detergent with a concentration of more than 45%. Different types of detergents vary in their active content and the appropriate amount of detergent required to wash the same weight of laundry varies. The existing intelligent washing machine often determines the dosage of the detergent only by the weight of the washed clothes and cannot be combined with the concentration of the detergent, so that the problems of rare foam, unclean clothes washing and the like often occur when the concentration of the input detergent is low in the use process of the existing intelligent washing machine; however, when the concentration of the detergent to be fed is too high, there are problems such as detergent residue, increased foam, necessity of increasing the number of times of rinsing, and water and electricity consumption. These can seriously affect the laundry experience for the user.
Disclosure of Invention
The invention aims to solve the problem that the dosage of the detergent can not be reasonably determined according to the concentration of the detergent in the existing washing machine, and provides a method for accurately controlling the dosage of the detergent, which avoids the problems of detergent residue, foam increase, rinsing frequency increase and water and electricity consumption while ensuring the cleanliness of washing.
In order to solve the technical problems, the invention adopts the following technical scheme:
in one aspect, the present invention provides a method for accurately controlling the amount of detergent used in a washing apparatus, comprising: establishing N concentration intervals according to the sequence from low to high, wherein N is less than 7; assigning a concentration grade to each concentration interval, wherein the ith concentration interval corresponds to the ith concentration grade Ci = i, i =1, … …, N; determining a concentration level Ci of detergent in the washing apparatus; acquiring the weight m of the washed clothes; using the formula Vn =1.25 m (7-Ci), the amount of detergent Vn is calculated.
The invention preferably determines the concentration level Ci of the detergent in the washing apparatus in two ways:
in the first mode, N conductivity intervals which are in one-to-one correspondence with the N concentration intervals are determined according to the N concentration intervals; detecting the conductivity of the detergent, and recording the detected conductivity as d; determining a conductivity interval where the conductivity d is located; and determining the concentration grade Ci of the detergent according to the concentration interval corresponding to the conductivity interval in which the conductivity d is positioned.
Preferably, the N conductivity intervals are determined by: the N concentration intervals are N continuous concentration intervals, and the critical point concentration value of each concentration interval is recorded as Ei, i =1, … …, N-1; the conductivities of N-1 detergents with concentration values Ei (i =1, … …, N-1) respectively are detected, and the N conductivity intervals are determined by taking the detected N-1 conductivity values as critical points.
In a second mode, the concentration level Ci of the detergent is determined by a detergent concentration parameter which is manually input, and the method comprises the following steps: receiving externally input detergent concentration parameters; when the detergent concentration parameter is a specific concentration value, determining the concentration grade Ci of the detergent according to the concentration interval where the concentration value is located; and when the detergent concentration parameter is a concentration range, determining the concentration grade Ci of the detergent according to a concentration interval in which the concentration range is located.
Further, in the process of determining the concentration grade Ci of the detergent according to the detergent type, it includes: the types of the detergents comprise M, wherein M is less than or equal to N; determining M concentration intervals in the N concentration intervals according to M concentration ranges corresponding to M types of detergents; respectively endowing the M types of detergents with corresponding concentration levels by utilizing the M concentration levels corresponding to the M concentration intervals; and directly acquiring the corresponding concentration grade Ci according to the type of the externally input detergent.
On the other hand, the invention also provides a washing machine, which comprises a detergent box for storing detergent, a conductivity detection module, an automatic feeding device, a weight detection device and a control module; the conductivity detection module is mounted on the detergent box and used for detecting the conductivity of the detergent in the detergent box; the automatic feeding device is arranged on the detergent box and is used for quantitatively extracting and feeding the detergent in the detergent box; the weight detecting device is used for detecting the weight m of the washed clothes in the washing machine; the control module receives the conductivity d detected by the conductivity detection module and the weight m of the washed clothes detected by the weight detection device, compares the conductivity d with N conductivity intervals written into the control module in advance to determine the conductivity interval where the conductivity d is located, further determines the concentration grade Ci of the detergent according to the conductivity interval where the conductivity d is located, calculates the usage Vn of the detergent by using a formula Vn =1.25 m (7-Ci), and further controls the automatic feeding device to perform quantitative extraction feeding; the N conductivity intervals are in one-to-one correspondence with N concentration intervals formed from low concentration to high concentration, and the ith concentration interval corresponds to the ith concentration grade Ci = i, i =1, … …, N, N < 7.
Preferably, the N conductivity intervals are determined by: the N concentration intervals are N continuous concentration intervals, and the critical point concentration value of each concentration interval is recorded as Ei, i =1, … …, N-1; the conductivities of N-1 detergents with concentration values Ei (i =1, … …, N-1) respectively are detected, and the N conductivity intervals are determined by taking the detected N-1 conductivity values as critical points.
For detecting when the conductivity of the detergent stored in the detergent box is detected, the present invention proposes the following two preferred schemes:
first, the control module starts the conductivity detection module to detect the conductivity of the detergent stored in the detergent box at the beginning of each washing procedure. That is, the conductivity detection is performed once before each washing is started.
Secondly, a liquid level detection module is arranged in the washing machine, is arranged on the detergent box and is used for detecting the liquid level change of the detergent stored in the detergent box, generating a liquid level detection signal and sending the liquid level detection signal to the control module; when the control module detects that the liquid level of detergent in the detergent box rises, the control module starts the conductivity detection module to detect the conductivity d of the detergent stored in the detergent box so as to determine the concentration grade Ci of the detergent and update the detergent concentration grade parameter stored in the control module; the control module calculates the amount of detergent used at the beginning of each washing program using its stored detergent concentration level parameters.
In another aspect, the present invention provides another washing machine, including a detergent box for storing detergent, a human-machine interface for receiving a detergent concentration parameter input by a user, an automatic dispensing device, a weight detection device, and a control module; the automatic feeding device is arranged on the detergent box and is used for quantitatively extracting and feeding the detergent in the detergent box; the weight detecting device is used for detecting the weight m of the washed clothes in the washing machine; the control module determines the concentration grade Ci of the detergent according to the detergent concentration parameter, and calculates the using amount Vn of the detergent by using a formula Vn =1.25 m (7-Ci) in combination with the weight m of the washed clothes, so as to control the automatic feeding device to perform quantitative extraction feeding; wherein Ci = i, i =1, … …, N <7, and the higher the concentration of detergent, the larger the concentration scale.
Furthermore, N concentration intervals formed from low concentration to high concentration are stored in the control module, each concentration interval corresponds to one concentration grade, and the ith concentration interval corresponds to the ith concentration grade Ci.
Preferably, one or more of a concentration value input interface, a detergent type selection interface and a detergent concentration range selection interface are arranged on the human-computer interface and used for receiving the detergent concentration parameters; the concentration value input interface is used for receiving a specific concentration value of a detergent input by a user and determining a concentration grade Ci of the detergent according to a concentration interval where the specific concentration value is located; the detergent concentration range selection interface is used for receiving a detergent concentration range selected by a user and determining the concentration grade Ci of the detergent according to a concentration interval in which the concentration range is located.
Further, the detergent types comprise M, and M is less than or equal to N; and M concentration intervals in the N concentration intervals are consistent with M concentration ranges corresponding to M types of detergents, the concentration levels of the M types of detergents are set to be in one-to-one correspondence with the M concentration levels corresponding to the M concentration intervals, and then the corresponding concentration level Ci is directly obtained according to the type of the detergent selected by a user.
In order to simplify the operation of a user, the user only needs to execute the input process of the detergent concentration parameter once when supplementing or updating the detergent into a detergent box of the washing machine, the invention designs that the control module determines the concentration grade Ci of the detergent according to the newly input detergent concentration parameter when detecting that the user newly inputs the detergent concentration parameter through a human-computer interface, and updates the detergent concentration grade parameter stored in the control module according to the newly input detergent concentration parameter; the control module calculates the amount of detergent used at the beginning of each washing program using its stored detergent concentration level parameters.
Compared with the prior art, the invention has the advantages and positive effects that: the invention comprehensively considers two factors of the concentration of the detergent and the weight of the washed clothes, and determines the dosage of the detergent by adopting a formula calculation method, thereby realizing the accurate control of the dosage of the detergent, effectively avoiding the problem that the dosage of the concentrated detergent is easy to generate excessive dosage when determining the dosage of the detergent according to the weight of the clothes, and solving the problems of residual detergent, increased foam, multiple rinsing, water and electricity waste and the like caused by excessive dosage.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a partial structural view of an embodiment of a washing machine according to the present invention;
FIG. 2 is a schematic block circuit diagram of an embodiment of an electrical control portion of the washing machine of FIG. 1;
FIG. 3 is a control flow diagram of an embodiment of a proposed detergent dosage control method based on the washing machine shown in FIG. 1;
fig. 4 is a control flowchart based on another embodiment of a detergent dosage control method proposed by the washing machine shown in fig. 1;
fig. 5 is a partial structural view of another embodiment of a washing machine according to the present invention;
FIG. 6 is a schematic block circuit diagram of an embodiment of an electrical control portion of the washing machine of FIG. 5;
fig. 7 is a control flowchart of an embodiment of a proposed detergent dosage control method based on the washing machine shown in fig. 6.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
In order to realize accurate control on the adding amount of the detergent, the invention comprehensively determines the using amount of the detergent by combining two factors of the concentration grade of the detergent and the weight of the washed clothes, and provides a corresponding calculation formula. The dosage of the detergent is determined by adopting a formula calculation method, the programming is simple, the execution speed is high, and the software program design of the washing equipment is facilitated.
In order to obtain concentration levels of detergents, the invention proposes two preferred embodiments, which are illustrated by the following two specific examples.
First, this example uses conductivity measurements to obtain detergent concentration levels.
The concentration of the detergent is expressed by the content of active substances, and the methods for detecting the active substances mainly comprise two methods: optical sensor assays and chemical reagent assays. The optical sensor detection method has a relatively high cost and a relatively complex structure, and if the optical sensor detection method is applied to a washing machine, the hardware structure design of the washing machine is complicated, and the cost of the washing machine is obviously increased. The chemical reagent detection method needs off-line detection, consumes reagents and cannot realize concentration differentiation on line, so that the method is not suitable for being applied to washing machine products.
In order to meet the application requirements of the washing machine, the embodiment adopts a conductivity detection method, the concentration level of the detergent is reflected by detecting the conductivity of the detergent, and the use amount of the detergent is comprehensively determined by combining the weight of the washed clothes, so that the washing machine can more accurately control the input amount of the detergent, and the problems of incomplete washing of the clothes caused by too small input amount of the detergent, or detergent residue, increased foam, increased rinsing times, water and electricity consumption and the like caused by too much input amount of the detergent are avoided.
In order to perform conductivity detection on the detergent, a conductivity detection module is used. The current conductivity detection module has higher detection precision for low-concentration detergent, and has relatively lower detection precision for high-concentration detergent. In order to meet the requirement of detection precision, the conventional solution is to dilute the detergent to the same extent, detect the conductivity of the diluted detergent, convert the concentration of the diluted detergent into the concentration of the detergent, and calculate the concentration of the detergent stored in the detergent box according to the dilution degree. By adopting the conventional solution, a quantitative dilution container and corresponding water inlet pipelines and water discharge pipelines need to be additionally arranged in the washing machine, so that the structural design of the washing machine is complicated, the detection and conversion processes of the concentration of the detergent are relatively complicated, and certain difficulty is caused to the software program design.
In order to simplify the software and hardware design of the washing machine, the embodiment adopts a zone division mode to divide the concentration of the detergent into N continuous concentration zones from low to high, then the conductivity of the detergent in different concentration zones is detected by a conductivity detection module used on the washing machine, the corresponding relation between the N concentration zones and the N conductivity zones is formed, and the corresponding relation is written into a computer board of the washing machine. Therefore, in the actual use process of the washing machine after leaving the factory, the conductivity detection module can be directly utilized to detect the conductivity of the detergent stored in the detergent box so as to determine the conductivity interval in which the conductivity falls, and further correspond to the concentration interval in which the detergent is located. Different concentration levels are given to each concentration interval, and the N concentration levels determined according to the N concentration intervals correspond to the N conductivity intervals one by one because the N conductivity intervals correspond to the N concentration intervals one by one. Therefore, after the conductivity interval in which the conductivity of the detergent is located is determined, the concentration level of the detergent can be correspondingly obtained. The detergent dosage Vn can be calculated by using the concentration level of the detergent and combining the weight of the washed clothes.
By adopting the detergent concentration grade obtaining mode, the washing machine does not need to execute formula conversion from conductivity to detergent concentration value in the using process, thereby not only accelerating the program processing speed and simplifying the software flow design, but also solving the problem of inaccurate detergent dosage control caused by detection precision difference existing in the process of directly detecting the conductivity of the detergent. And, also need not to add quantitative dilution container and corresponding inlet channel and drain line on washing machine's hardware structure design, only need to install conductivity detection module on the detergent box, directly carry out the conductivity to the detergent in the detergent box and detect can, hardware structure design is simple, and hardware cost can obtain effective control.
First, the hardware structure design of the washing machine of the present embodiment will be specifically described with reference to fig. 1 and 2.
As shown in fig. 1 and 2, in order to implement an automatic detergent dispensing function, a detergent box 12 capable of storing a certain amount of detergent is first provided in the washing machine, and an automatic dispensing device 15 is mounted on the detergent box 12 for quantitatively extracting and dispensing the detergent stored in the detergent box 12. The automatic feeding device 15 can be designed in various ways, for example, a venturi tube negative pressure quantitative pumping mode, a quantitative pump automatic pumping mode and the like, and ideal control precision can be guaranteed on feeding amount. The detergent quantitatively extracted by the automatic feeding device 15 is fed into the washing tank 11 or is firstly fed into a water inlet pipeline 16 communicated with the washing tank 11, and the detergent is diluted by the injected tap water in the water inlet pipeline 16 and then is injected into the washing tank 11, so that the detergent is more favorably dissolved and diluted in the washing machine.
In order to perform conductivity detection of the detergent in the detergent box 12, the present embodiment mounts a conductivity detection module 13 on the detergent box 12. The conductivity detection module 13 may be installed at the top, bottom or below the sidewall of the detergent box 12, as long as it is ensured that the detection electrode thereof can extend into the bottom of the detergent box 12, and the conductivity detection can be accurately performed even if there is a little detergent left.
A liquid level detection module 14 for detecting the remaining amount of the detergent stored in the detergent box 12 may be further installed on the detergent box 12. By detecting the liquid level of the detergent in the detergent box 12, on one hand, when the detergent is about to be used up, a user can be reminded to replenish the detergent in the detergent box 12 in time; on the other hand, it may be automatically recognized that new detergent is injected into the detergent box 12 when the level of detergent rises. At this time, the conductivity detection module 13 may be started to perform conductivity detection on the newly injected detergent, so as to re-determine the conductivity interval and the detergent concentration level corresponding to the conductivity interval, thereby accurately controlling the input amount of the updated detergent.
In addition, the present embodiment further includes a weight detecting module 17 mounted on the washing tub 11 for detecting the weight m of the laundry loaded in the washing machine. As shown in fig. 2, the control module 18 is further disposed on the computer board of the washing machine, and receives the conductivity d output by the conductivity detection module 13, the liquid level detection signal output by the liquid level detection module 14, and the weight m of the washed clothes output by the weight detection module 17, determines the usage Vn of the detergent, and sends the usage Vn to the automatic dispensing device 15, so as to achieve quantitative dispensing of the detergent.
The following describes the method for controlling the amount of detergent used in the washing machine according to the present embodiment in detail with reference to the hardware configuration shown in fig. 1 and 2.
The method for controlling the amount of detergent used in this example is preferably realized by the following two design schemes.
A first design, shown in fig. 3, comprises the following steps:
and S301, electrifying and initializing the washing machine, and waiting for the user to select the required running program.
S302, the washing machine executes the subsequent steps when running the washing program every time.
S303, detecting the conductivity d of the detergent;
in this embodiment, the control module 18 on the computer board of the washing machine first activates the conductivity detection module 13 to detect the conductivity d of the detergent stored in the detergent box 12 each time the washing machine is detected to enter the washing program. That is, the conductivity measuring process of the present embodiment is performed once at the beginning of each washing process.
S304, determining a conductivity interval where the conductivity d is located according to the detected conductivity d;
in the development stage of the washing machine, N concentration intervals are formed according to the concentration of the detergent from low to high, and N continuous concentration intervals are preferably formed; and then determining N corresponding conductivity intervals according to the N concentration intervals to form a one-to-one correspondence relationship between the N concentration intervals and the N conductivity intervals. The specific mode can be as follows: recording the critical point concentration values of N continuous concentration intervals as Ei, i =1, … …, N-1; for example, E1=15%, E2=25%, E3=35%, E4=45%, so that 5 consecutive concentration intervals can be formed, respectively: 15 percent, 15 percent to 25 percent, 25 percent to 35 percent, 35 percent to 45 percent and 45 percent. Then, the conductivity of N-1 detergents respectively having concentration values Ei (i =1, … …, N-1) is detected by a conductivity detection module 13 selected in the washing machine; for example, for detergents with concentration values of C1=15%, C2=25%, C3=35%, C4=45%, respectively, the detected conductivities are: d1=40ms/cm, d2=22ms/cm, d3=13ms/cm, d4=6 ms/cm. Thus, N conductivity intervals corresponding to the N concentration intervals can be formed by taking the detected N-1 conductivity values di as critical points; for example, 5 conductivity intervals can be determined in combination with d1-d4, respectively: the conductivity ranges are more than 40ms/cm, 40 ms/cm-22 ms/cm, 22 ms/cm-13 ms/cm, 13 ms/cm-6 ms/cm and less than 6ms/cm, and the 5 conductivity ranges are just in one-to-one correspondence with the 5 concentration ranges. Thus, a one-to-one correspondence of the N concentration zones and the N conductivity zones can be formed.
Each density interval is assigned a density level, i.e. the ith density interval corresponds to the ith density level Ci, and Ci = i, i =1, … … N. That is, in order of the density from low to high, the density level C1=1 in the 1 st density section, the density level C2=2 in the 2 nd density section, and so on, and the density level CN = N in the nth density section, that is, the higher the density, the larger the density level. Since the N concentration intervals correspond to the N conductivity intervals one to one, N concentration levels Ci = i, i =1, … … N are determined in one to one correspondence for the N conductivity intervals. Since the higher the concentration of the detergent, the lower the conductivity thereof, the N conductivity intervals are arranged in the order of conductivity from high to low, i.e., the higher the conductivity d of the detergent, the lower the concentration level thereof. Taking 5 continuous conductivity intervals of more than 40ms/cm, 40ms/cm to 22ms/cm, 22ms/cm to 13ms/cm, 13ms/cm to 6ms/cm and <6ms/cm as examples, the concentration levels corresponding to the 5 conductivity intervals are as follows in sequence: 1.2, 3, 4 and 5.
The N conductivity intervals and the N concentration levels Ci = i (i =1, … … N) corresponding thereto are written into the control module 18 for the system program to call.
S305, determining the concentration grade Ci of the detergent according to the conductivity interval where the conductivity d is located;
that is, the control module 18 determines the concentration level Ci corresponding to the detergent stored in the detergent box 12 for the concentration level Ci corresponding to each conductivity zone.
S306, detecting the weight m of the washed clothes;
in this embodiment, the weight m of the laundry put into the washing machine may be detected by the weight detection module 17 and transmitted to the control module 18 for calculation of the amount Vn of the detergent.
S307, substituting the concentration grade Ci of the detergent and the weight m of the washed clothes into a calculation formula to calculate the using amount Vn of the detergent;
in this embodiment, the control module 18 calculates the amount Vn of the detergent by substituting the concentration level Ci of the detergent and the weight m of the laundry into the following formula:
Vn=1.25*m*(7-Ci)；
wherein Ci = i, i =1, … … N, and N < 7.
S308, controlling the automatic feeding device 15 to quantitatively feed the detergent according to the dosage Vn of the detergent;
in this embodiment, the control module 18 controls the automatic dispensing device 15 to draw the detergent with the volume Vn from the detergent box 12 according to the obtained detergent usage Vn, and dispense the detergent into the washing tank 11 or the water inlet pipeline 16, so as to dose the detergent quantitatively.
And S309, entering a normal washing program.
In a first design, the level detection module 14 may be used only to detect the remaining amount of detergent in the detergent box 12, and send it to the control module 18 for comparison with a preset lower limit value. When the residual amount of the detergent is lower than the set lower limit value, the control module 18 may prompt the user to replenish the detergent in the detergent box 12 in time by using an audible/visual alarm or by displaying a prompt message through a human-machine interface 19 provided on the washing machine.
The second embodiment is shown in fig. 4, and includes the following steps:
s401, electrifying and initializing the washing machine.
S402, starting the liquid level detection module 14 to detect the liquid level of the detergent;
in this embodiment, the liquid level detection module 14 detects the liquid level of the detergent stored in the detergent box 12 at regular time, and generates a liquid level detection signal to be sent to the control module 18 for saving. The control module 18 compares the detergent liquid level received each time with the liquid level parameters stored before the detergent liquid level, and if the detergent liquid level is not consistent with the liquid level parameters, the detergent liquid level is updated; if the received detergent level is significantly increased compared to its previously stored level parameter, it is determined that the detergent box 12 is being replenished with new detergent.
S403, if the liquid level of the detergent is increased, executing the subsequent steps; otherwise, go to step S407 to continue execution.
S404, detecting the conductivity d of the detergent;
in this embodiment, the control module 18 on the computer board of the washing machine starts the conductivity detection module 13 to detect the conductivity d of the detergent stored in the detergent box 12 after each time the control module detects that the detergent box 12 is replenished with new detergent. That is, the conductivity detection process of the present scheme is performed only once when the detergent is renewed.
S405, determining a conductivity interval where the conductivity d is located according to the detected conductivity d;
the specific determination process of the conductivity interval in which the conductivity d is located may refer to the related description in step S304, and this embodiment will not be described herein.
S406, determining the concentration grade Ci of the detergent according to the conductivity interval where the conductivity d is located, and storing the concentration grade Ci;
the specific determination manner of the concentration level Ci of the detergent may refer to the related description in the above steps S304, S305, and the description of this embodiment will not be repeated. And storing the determined detergent concentration grade Ci in the control module 18, and modifying the detergent concentration grade parameter in the control module 18 for the washing machine to call in the washing program.
S407, waiting for the user to select the required running program.
S408, if the user selects to run the washing program, executing the subsequent steps; otherwise, jumping to other running programs and responding to the user operation.
S409, reading the concentration grade parameter of the current detergent;
the current detergent concentration level parameter (i.e., Ci) is stored in the control module 18 and can be directly retrieved for use.
S410, detecting the weight m of the washed clothes;
the present embodiment may detect the weight m of the laundry input into the washing machine using the weight detecting module 17 and transmit it to the control module 18 for calculation of the detergent usage Vn.
S411, substituting the concentration grade Ci of the current detergent and the weight m of the washed clothes into a calculation formula to calculate the using amount Vn of the detergent;
in this embodiment, the control module 18 calculates the amount Vn of the detergent by substituting the concentration level Ci of the detergent and the weight m of the laundry into the following formula:
Vn=1.25*m*(7-Ci)；
wherein Ci = i, i =1, … … N, and N < 7.
S412, controlling the automatic feeding device 15 to quantitatively feed the detergent according to the detergent dosage Vn;
that is, the control module 18 controls the automatic dispensing device 15 to draw the detergent with the volume Vn from the detergent box 12 according to the calculated detergent volume Vn and dispense the detergent into the washing tank 11 or the water inlet pipe 16, so as to dose the detergent in a fixed amount.
And S413, entering a normal washing program.
In the second design, the level detection module 14 detects the level change of the detergent in the detergent box 12 in real time and sends the level change to the control module 18 for storage. The control module 18 can judge the residual amount of the detergent on one hand according to the received detergent liquid level, and when the residual amount of the detergent is lower than a preset lower limit value, the control module controls the sound/light alarm to give a sound/light alarm or displays prompt information through a human-computer interface 19 arranged on the washing machine to remind a user of timely supplementing the detergent into the detergent box 12; on the other hand, it may be automatically judged that a new detergent is injected into the detergent box 12 when the detergent level is detected to be increased. Since the concentration of the newly injected detergent is unknown, the conductivity detection module 13 needs to be activated to perform conductivity detection on the detergent in the detergent box 12 again to modify the concentration level parameter of the detergent stored in the control module 18, so as to facilitate direct calling in the washing program.
The embodiment utilizes the conductivity detection method to automatically acquire the concentration of the detergent without human intervention, and can obviously improve the intelligent degree of the washing machine.
In the second embodiment, the concentration level of the detergent is obtained by manually inputting the concentration parameter of the detergent.
Referring to fig. 5 and 6, the present embodiment is provided with a detergent box 22, an automatic dispensing device 25, a weight detecting device 27, a human-machine interface 29, and a control module 28 in the washing machine. The detergent box 22 is used for storing a certain amount of detergent 23, and the storage amount of the detergent box can meet the requirement of a plurality of washing programs on the amount of the detergent. An automatic dispensing device 25 is installed on the detergent box 22 for quantitatively drawing and dispensing the detergent 23 stored in the detergent box 22. Similarly, the automatic feeding device 25 may also be designed in various manners, such as a venturi tube negative pressure quantitative pumping manner, a quantitative pump automatic pumping manner, and the like. The detergent 23 quantitatively extracted by the automatic feeding device 5 is fed into the washing tank 21 or is firstly fed into a water inlet pipeline 26 communicated with the washing tank 21, so that the detergent 23 is firstly diluted by the injected tap water in the water inlet pipeline 26 and then is injected into the washing tank 21, and the detergent 23 is more favorably dissolved and diluted in the washing machine.
Considering the detergents on the market at present, labels related to the concentration of the detergent are printed on the outer package of the detergent, and the labels are in the form of 'detergent type', such as common type, concentrated type, high concentrated type, super concentrated type and the like; some appear in the form of "specific concentration values", for example, directly marking the concentration value on a detergent bottle or a detergent bag; some are in the form of "concentration ranges", such as "detergent concentrations: 25% -30% ", and the like. In order to make the washing machine of the present embodiment know the concentration of the detergent 23 stored in the detergent box 22, the present embodiment adopts a manual input method, and a human-machine interface 29 is provided on the washing machine, as shown in fig. 6, to receive the detergent concentration parameter input by the user. In this embodiment, the detergent concentration parameter may be a specific concentration value of the detergent, a type of the detergent, or a concentration range of the detergent. In order to meet different input requirements, the embodiment may provide a concentration value input interface on the human-computer interface 29, for example, in the form of numeric keys or the like, for receiving a specific concentration value of the detergent input by the user. A detergent type selection interface and/or a detergent concentration range selection interface may also be provided on the human-machine interface 29 of the washing machine. The detergent type selection interface and the detergent concentration range selection interface may be embodied in a manner of providing a touch screen or a multi-position knob on an operation panel of the washing machine to provide to a user to select the type of the detergent 23 or the concentration range of the detergent 23 according to a mark on the detergent outer package.
The detergent concentration parameters entered by the user through the human-machine interface 29 are sent to the control module 28 on the computer board of the washing machine to determine the concentration level of the detergent 23 according to the detergent concentration parameters. As a preferred design of this embodiment, N concentration intervals may be formed in the control module 28, preferably N concentration intervals with continuous concentrations from low to high, and may be displayed in the detergent concentration range selection interface of the human-computer interface 29 for the user to select. Each density interval is assigned a density level, i.e. the ith density interval corresponds to the ith density level Ci, and Ci = i, i =1, … … N. That is, the concentration level C1=1 in the 1 st concentration section, the concentration level C2=2 in the 2 nd concentration section, and so on, and the concentration level CN = N in the nth concentration section in the order of the concentration from low to high. When a user selects one of the concentration intervals through the detergent concentration range selection interface of the human-computer interface 29, the control module 28 may automatically obtain the corresponding concentration level according to the selected concentration interval, and the concentration level is stored in the control module 28 as the current concentration level of the detergent, so that the system can call the current concentration level in the washing program.
Considering that different types of detergents correspond to different concentration ranges, for example, the concentration range of a common detergent is 15% -25%; the concentration range of the concentrated detergent is 25% -35%; the concentration range of the high-concentration detergent is 35% -45%; the concentration of the ultra-concentrated detergent was > 45%. Therefore, when the N concentration sections are divided into sections, it is preferable to determine a partial section of the N concentration sections for each concentration range corresponding to a different type of detergent. That is, for M types of detergents (M < N), M concentration intervals of the N concentration intervals may be formed according to M concentration ranges corresponding to the M types of detergents, and the remaining N-M concentration intervals may be determined according to actual needs. For example, 5 concentration intervals may be formed: 15%, 15% -25%, 25% -35%, 35% -45% and >45%, wherein a common detergent corresponds to a 2 nd concentration section, a concentrated detergent corresponds to a 3 rd concentration section, a high-concentration detergent corresponds to a 4 th concentration section, a super-concentrated detergent corresponds to a 5 th concentration section, different detergent types and different concentration sections are stored correspondingly so as to correspond to the same concentration level.
By adopting the above concentration interval dividing manner, when the detergent concentration parameter is a specific concentration value input by a user through a concentration value input interface of the human-computer interface 29, the concentration interval in which the detergent concentration parameter is located can be determined according to the specific concentration value, and further, the concentration level of the detergent 23 can be determined according to the concentration level corresponding to the concentration interval in which the detergent concentration parameter is located. And when the detergent concentration parameter is the detergent type selected by the user through the detergent type selection interface of the human-machine interface 29, the concentration level of the detergent 23 can be determined according to the detergent type. When the detergent concentration parameter is a concentration range selected or entered by a user through a detergent concentration range selection interface of the human-computer interface 29, the control module 28 may determine the concentration level of the detergent according to a concentration interval in which the concentration range is located.
The weight m of the laundry put into the washing tub 21 is sensed by a weight sensing module 27 mounted on the washing machine and transmitted to a control module 28. The control module 28 calculates the usage Vn of the detergent 23 according to the acquired concentration level Ci of the detergent 23 and the weight m of the laundry, and further controls the automatic feeding device 25 to quantitatively draw and feed the detergent 23 in the detergent box 22 according to the calculated usage Vn of the detergent, so as to accurately control the feeding amount of the detergent.
In addition, a liquid level detection module 24 may be further installed on the detergent box 22 of the present embodiment, as shown in fig. 5, for detecting the remaining amount of the detergent 23 stored in the detergent box 22. By detecting the liquid level of the detergent 23 in the detergent box 22 and generating a liquid level detection signal to be sent to the control module 28, on one hand, when the detergent 23 is about to be used up, a user can be reminded to replenish the detergent into the detergent box 22 in time; on the other hand, it can be automatically recognized that new detergent is injected into the detergent box 22 when the level of the detergent 23 rises. At this time, the control module 28 may prompt the user to input the detergent concentration parameter through the human-machine interface 29, so as to re-determine the concentration level corresponding to the current detergent 23, thereby implementing accurate control of the added amount of the updated detergent.
The method for precisely controlling the amount of detergent in this example will be described in detail with reference to fig. 7.
And S701, electrifying and initializing the washing machine, and waiting for the user to select a required running program.
S702, the washing machine executes the subsequent steps when running the washing program every time.
S703, detecting the weight m of the washed clothes;
in this embodiment, the weight m of the laundry put into the washing machine may be detected by the weight detecting module 27 and transmitted to the control module 28.
S704, reading the concentration grade Ci of the detergent;
in the present embodiment, the concentration levels Ci of the detergent 23 stored in the detergent box 22 are already stored in the control module 28 in advance in the form of detergent concentration level parameters, and can be directly retrieved for use. When detergent is first injected or replenished into the detergent box 22, the user needs to input a detergent concentration parameter through the human-machine interface 29 on the washing machine. The control module 28 determines the detergent concentration level Ci according to the received detergent concentration parameter, and updates the stored detergent concentration level parameter in the control module 28 accordingly. In this way, before the next replenishment of detergent, the user does not need to perform the input operation of the detergent concentration parameter, and the control module 28 in the washing machine can directly read the stored detergent concentration level parameter, that is, the current detergent concentration level Ci.
S705, calculating the dosage Vn of the detergent by utilizing a calculation formula according to the concentration grade Ci of the detergent and the weight m of the washed clothes;
in the present embodiment, the control module 28 compares the concentration level Ci of the detergent and the weight Vn =1.25 × m (7-Ci) of the laundry;
wherein Ci = i, i =1, … … N, and N < 7.
S706, controlling the automatic feeding device 25 to quantitatively feed the detergent according to the dosage Vn of the detergent;
in this embodiment, the control module 28 controls the automatic dispensing device 25 to draw the detergent with the volume Vn from the detergent box 22 according to the obtained detergent usage Vn, and dispense the detergent into the washing tank 21 or the water inlet pipeline 26, so as to achieve quantitative dispensing of the detergent.
And S707, entering a normal washing program.
The invention combines the concentration grade of the detergent and the weight of the washed clothes, adopts a formula calculation method to determine the dosage of the detergent, has simple scheme and strong practicability, and realizes the accurate feeding of the detergent. Of course, the method for accurately controlling the dosage of the detergent can be applied to other washing equipment except a washing machine, and the same or similar technical effects can be obtained.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for accurately controlling the dosage of detergent is applied to washing equipment and is characterized in that,
establishing N concentration intervals according to the sequence from low to high, wherein N is less than 7;
assigning a concentration grade to each concentration interval, wherein the ith concentration interval corresponds to the ith concentration grade Ci = i, i =1, … …, N;
determining a concentration level Ci of detergent in the washing apparatus;
acquiring the weight m of the washed clothes;
calculating the dosage Vn of the detergent by using the formula Vn =1.25 m (7-Ci);
wherein the process of determining the concentration level Ci of the detergent in the washing apparatus comprises:
the method for acquiring the concentration grade of the detergent by manually inputting the concentration parameter of the detergent comprises the following steps of, when the concentration parameter of the detergent is the type of the detergent, determining the concentration grade Ci of the detergent according to the type of the detergent:
the types of the detergents comprise M, wherein M is less than or equal to N;
determining M concentration intervals in the N concentration intervals according to M concentration ranges corresponding to M types of detergents;
respectively endowing the M types of detergents with corresponding concentration levels by utilizing the M concentration levels corresponding to the M concentration intervals;
and directly acquiring the corresponding concentration grade Ci according to the type of the externally input detergent.
2. The method for accurately controlling the dosage of the detergent according to claim 1, wherein in the process of determining the concentration level Ci of the detergent in the washing equipment, the method for acquiring the concentration level of the detergent by adopting a conductivity detection method comprises the following steps:
determining N conductivity intervals which correspond to the N concentration intervals one by one according to the N concentration intervals;
detecting the conductivity of the detergent, and recording the detected conductivity as d;
determining a conductivity interval where the conductivity d is located;
and determining the concentration grade Ci of the detergent according to the concentration interval corresponding to the conductivity interval in which the conductivity d is positioned.
3. The method for accurately controlling the dosage of the detergent according to claim 2, wherein the N conductivity intervals are determined by:
the N concentration intervals are N continuous concentration intervals, and the critical point concentration value of each concentration interval is recorded as Ei, i =1, … …, N-1;
the conductivities of N-1 detergents with concentration values Ei (i =1, … …, N-1) respectively are detected, and the N conductivity intervals are determined by taking the detected N-1 conductivity values as critical points.
4. The method for accurately controlling the dosage of the detergent according to claim 1, wherein in the process of acquiring the concentration grade Ci of the detergent by manually inputting the concentration parameter of the detergent, the method further comprises the following steps:
when the detergent concentration parameter is a specific concentration value, determining the concentration grade Ci of the detergent according to the concentration interval where the concentration value is located;
and when the detergent concentration parameter is a concentration range, determining the concentration grade Ci of the detergent according to a concentration interval in which the concentration range is located.
5. A washing machine, characterized by comprising:
a detergent box for storing detergent;
a human-computer interface for receiving a detergent concentration parameter input by a user;
the automatic feeding device is arranged on the detergent box and is used for quantitatively extracting and feeding the detergent in the detergent box;
a weight detecting device for detecting a weight m of laundry in the washing machine;
the control module determines the concentration grade Ci of the detergent according to the detergent concentration parameter, calculates the using amount Vn of the detergent by using a formula Vn =1.25 m (7-Ci) in combination with the weight m of the washed clothes, and further controls the automatic feeding device to perform quantitative extraction feeding;
the control module stores N concentration intervals formed from low concentration to high concentration, each concentration interval corresponds to one concentration grade, and the ith concentration interval corresponds to the ith concentration grade Ci, Ci = i, i =1, … …, N, N < 7; when the concentration parameter of the detergent is the type of the detergent, the types of the detergent comprise M, and M is less than or equal to N; and M concentration intervals in the N concentration intervals are consistent with M concentration ranges corresponding to M types of detergents, the concentration levels of the M types of detergents are set to be in one-to-one correspondence with the M concentration levels corresponding to the M concentration intervals, and then the corresponding concentration level Ci is directly obtained according to the type of the detergent selected by a user.
6. A washing machine as claimed in claim 5 wherein one or more of a concentration value input interface, a detergent type selection interface, a detergent concentration range selection interface are provided on the human-machine interface for receiving the detergent concentration parameters; wherein the content of the first and second substances,
the concentration value input interface is used for receiving a specific concentration value of a detergent input by a user and determining a concentration grade Ci of the detergent according to a concentration interval where the specific concentration value is located;
the detergent type selection interface is used for receiving a detergent type selected by a user and determining the concentration grade Ci of the detergent according to the detergent type;
the detergent concentration range selection interface is used for receiving a detergent concentration range selected by a user and determining the concentration grade Ci of the detergent according to a concentration interval where the concentration range is located.
7. A washing machine as claimed in claim 5 or 6, characterized in that the control module determines the concentration level Ci of the detergent according to the re-input detergent concentration parameter when detecting that the user re-inputs the detergent concentration parameter through the human-machine interface, and updates the stored detergent concentration level parameter in the control module accordingly; the control module calculates the amount of detergent used at the beginning of each washing program using its stored detergent concentration level parameters.
8. The washing machine as claimed in claim 5, further comprising:
a conductivity detection module mounted on the detergent box for detecting conductivity of the detergent in the detergent box;
the control module receives the conductivity d detected by the conductivity detection module, compares the conductivity d with N conductivity intervals written into the control module in advance to determine a conductivity interval where the conductivity d is located, and further determines the concentration grade Ci of the detergent according to the conductivity interval where the conductivity d is located; the N conductivity intervals correspond to the N concentration intervals one by one.
9. Washing machine according to claim 8, characterized in that the N conductivity intervals are determined by:
the N concentration intervals are N continuous concentration intervals, and the critical point concentration value of each concentration interval is recorded as Ei, i =1, … …, N-1;
the conductivities of N-1 detergents with concentration values Ei (i =1, … …, N-1) respectively are detected, and the N conductivity intervals are determined by taking the detected N-1 conductivity values as critical points.
10. Washing machine according to claim 8 or 9,
the control module starts the conductivity detection module to detect the conductivity of the detergent stored in the detergent box when a washing program is started every time; alternatively, the first and second electrodes may be,
the washing machine is also provided with a liquid level detection module which is arranged on the detergent box and used for detecting the liquid level change of the detergent stored in the detergent box, generating a liquid level detection signal and sending the liquid level detection signal to the control module; when the control module detects that the liquid level of detergent in the detergent box rises, the control module starts the conductivity detection module to detect the conductivity d of the detergent stored in the detergent box so as to determine the concentration grade Ci of the detergent and update the detergent concentration grade parameter stored in the control module; the control module calculates the amount of detergent used at the beginning of each washing program using its stored detergent concentration level parameters.
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| CN111652333A (en) * | 2019-03-04 | 2020-09-11 | 青岛海尔洗衣机有限公司 | Clothes care agent management system and control method thereof |
| CN110093750A (en) * | 2019-05-10 | 2019-08-06 | 苏州博学智能科技有限公司 | A kind of intelligent washing machine washing methods of the self-service addition detergent function of band |
| CN110123239A (en) * | 2019-05-16 | 2019-08-16 | 陈新 | It is a kind of can automatic detergent adding dish-washing machine and method |
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