CN112941808B - Control method of water diversion valve and washing equipment - Google Patents
Control method of water diversion valve and washing equipment Download PDFInfo
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- CN112941808B CN112941808B CN202110062989.9A CN202110062989A CN112941808B CN 112941808 B CN112941808 B CN 112941808B CN 202110062989 A CN202110062989 A CN 202110062989A CN 112941808 B CN112941808 B CN 112941808B
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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
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or pumps
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/02—Water supply
Abstract
The invention is suitable for the technical field of intelligent household appliances, and provides a control method of a water diversion valve and washing equipment, wherein the control method comprises the following steps: if the preset control condition related to the water diversion valve is met, determining a target state related to the control condition; calculating target operation parameters related to the target state according to a preset water spray curve equation and corresponding environment parameters when the shunt valve is in the target state; controlling a water distribution valve to rotate, and monitoring real-time operation parameters of a water pump associated with the water distribution valve in the process of rotating the water distribution valve; and if the real-time operation parameters are matched with the target operation parameters, stopping the rotation of the water distribution valve, and recognizing that the water distribution valve is in the target state. The invention can control the water diversion valve based on the operation parameters of the water pump, improves the control accuracy of the water diversion valve, and avoids the condition that the water diversion valve cannot be controlled due to abnormal resetting.
Description
Technical Field
The invention belongs to the technical field of intelligent household appliances, and particularly relates to a control method of a water diversion valve and washing equipment.
Background
With the continuous development of intellectualization and automation, intelligent household appliances gradually enter thousands of households, and various services are provided for users. Most intelligent household appliances need carry out the operation of sending water to different regions in the time quantum of difference at the in-process that uses, consequently often can be provided with the valve that divides water in the water supply water route of intelligent household appliances, opens different delivery ports at the different moments through the valve that divides water, send the water operation to corresponding region.
In the existing control technology of the water diversion valve, before the water diversion valve is controlled to move, the water diversion valve needs to be reset, namely the water diversion valve is moved to an initial position, and then the rotation of the water diversion valve is determined according to a deviation value between a required target position and the initial position so as to be switched to a corresponding water outlet. However, the above-mentioned mode depends on the diversion valve to reset every time and all can accurately reach the initial position, and the diversion valve can not accurately reset to the initial position, and then can lead to the diversion valve can not accurately switch to the corresponding delivery port to the stability of the whole equipment has been reduced.
Disclosure of Invention
In view of this, embodiments of the present invention provide a control method for a water diversion valve and a washing device, so as to solve the problem that, in the existing control technology for a water diversion valve, the water diversion valve can accurately reach an initial position depending on each reset of the water diversion valve, and the water diversion valve cannot accurately reset to the initial position, so that the water diversion valve cannot be accurately switched to a corresponding water outlet, and thus the stability of the whole device is low.
The first aspect of the embodiment of the present invention provides a control method for a water diversion valve, including:
if the preset control condition about the water diversion valve is met, determining a target state related to the control condition;
calculating target operation parameters related to the target state according to a preset water spray curve equation and corresponding environment parameters when the shunt valve is in the target state;
controlling a water distribution valve to rotate, and monitoring real-time operation parameters of a water pump associated with the water distribution valve in the process of rotating the water distribution valve;
and if the real-time operation parameters are matched with the target operation parameters, stopping the rotation of the water distribution valve, and recognizing that the water distribution valve is in the target state.
A second aspect of an embodiment of the present invention provides a washing apparatus, including:
the water diversion valve rotating unit is used for determining a target state related to a preset control condition if the preset control condition related to the water diversion valve is met;
the target operation parameter calculation unit is used for calculating target operation parameters related to the target state according to a preset water spray curve equation and corresponding environment parameters when the shunt valve is in the target state;
the real-time operation parameter monitoring unit is used for controlling the rotation of the water distribution valve and monitoring the real-time operation parameters of the water pump related to the water distribution valve in the rotation process of the water distribution valve;
and the valve state judging unit is used for stopping the rotation of the water distribution valve and recognizing that the water distribution valve is in the target state if the real-time operation parameters are matched with the target operation parameters.
A third aspect of embodiments of the present invention provides a washing apparatus comprising a memory, a processor and a computer program stored in the memory and operable on the processor, the processor implementing the steps of the first aspect when executing the computer program.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, performs the steps of the first aspect.
The control method of the water diversion valve and the washing equipment provided by the embodiment of the invention have the following beneficial effects:
according to the embodiment of the invention, when the water diversion valve needs to be controlled to rotate to a corresponding target state, the corresponding environment parameter of the water diversion valve in the target state is led into a preset water spray curve equation, so that a target operation parameter related to the target state is calculated, wherein the target operation parameter is specifically used for representing a target parameter of a water pump corresponding to the water diversion valve when the water diversion valve is in the target state; then, the washing equipment can control the rotation of the shunt valve, and the running condition of the water pump corresponding to the shunt valve is monitored in real time in the rotation process of the shunt valve, so that the real-time running parameters are obtained. Compared with the control technology of the existing water distribution valve, the control method and the control device have the advantages that the water distribution valve does not reset to the initial position, the water outlet condition of the washing equipment is determined according to the running condition of the water pump, different water outlet conditions correspond to different water outlets, so that whether the water distribution valve rotates to the corresponding state or not can be determined according to the running parameters of the water pump, the water distribution valve can be controlled based on the running parameters of the water pump, the control accuracy of the water distribution valve is improved, and the situation that the water distribution valve cannot be controlled due to abnormal resetting is avoided.
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 or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only 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 inventive exercise.
Fig. 1 is a flowchart illustrating a method for controlling a water distribution valve according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a water delivery process provided by an embodiment of the present invention;
fig. 3 is a flowchart illustrating an implementation of a control method S102 for a water diversion valve according to a second embodiment of the present invention;
fig. 4 is a flowchart illustrating a detailed implementation of a control method S103 for a water diversion valve according to a third embodiment of the present invention;
fig. 5 is a flowchart illustrating a detailed implementation of a control method S103 for a water diversion valve according to a fourth embodiment of the present invention;
fig. 6 is a flowchart illustrating a detailed implementation of a control method for a water distribution valve according to a fifth embodiment of the present invention;
fig. 7 is a flowchart illustrating a specific implementation of a control method of a water diversion valve according to a sixth embodiment of the present invention;
fig. 8 is a block diagram illustrating a structure of a washing apparatus according to an embodiment of the present invention;
fig. 9 is a schematic view of a washing apparatus according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
According to the embodiment of the invention, when the water diversion valve needs to be controlled to rotate to a corresponding target state, the corresponding environment parameter of the water diversion valve in the target state is led into a preset water spray curve equation, so that a target operation parameter related to the target state is calculated, wherein the target operation parameter is specifically used for representing a target parameter of a water pump corresponding to the water diversion valve when the water diversion valve is in the target state; then, the washing equipment can control the rotation of the water distribution valve, and the operation condition of a water pump corresponding to the water distribution valve is monitored in real time in the rotation process of the water distribution valve, so that the real-time operation parameters are obtained, and the target operation parameters are the operation parameters of the water pump in a target state of the water distribution valve.
In the embodiment of the present invention, the main execution body of the process is a washing device, which includes but is not limited to: dish washer and feeding bottle cleaning machine. This washing equipment disposes the shunt valve, can switch different delivery ports through controlling the shunt valve to the realization is intake the operation to different regions, and this washing household electrical appliances still disposes data processing module, controls the shunt valve through data processing module and rotates, and this data processing module can be microprocessor such as singlechip. Fig. 1 shows a flow chart for implementing the control method of the water diversion valve according to the first embodiment of the present invention, which is detailed as follows:
in S101, if a preset control condition for the water diversion valve is satisfied, a target state associated with the control condition is determined.
In this embodiment, the washing device may be configured with at least one control condition for the water diversion valve in advance, and under different control conditions, the water diversion valve may be rotated to a corresponding state, so as to achieve the purpose of delivering water into the washing device through a corresponding water outlet. Based on the control method, whether the current state of the washing equipment meets any preset control condition or not can be monitored in real time in the running process of the washing equipment.
In one possible implementation, the control condition includes a time condition and an event condition.
If the control condition is a time condition, the washing device may be configured with a plurality of time nodes, the time node may be determined according to a current operation mode of the washing device, and each time node corresponds to one control condition. If the washing equipment detects that the current time reaches any preset time node, identifying that the washing equipment currently meets the control condition corresponding to the time node, and executing the operation of S101. For example, a plurality of different water inlet times are limited in a certain operation mode of the washing equipment, and water inlet areas corresponding to the different water inlet times can be the same or different, so that at least one water inlet can be associated with the different water inlet times, and the state of the required water distribution valve can be determined according to the water inlet associated with the water inlet time. For example, if a washing cavity of the washing apparatus is divided into an upper washing area and a lower washing area, the upper washing area may correspond to an upper water outlet, and the lower washing area corresponds to a lower water outlet, if a certain washing stage in the operation mode needs to feed water to the upper washing area, the water outlet associated with the corresponding water inlet time of the washing stage is the upper water outlet, and correspondingly, if another washing stage in the operation mode needs to feed water to the lower washing area, the water outlet associated with the corresponding water inlet time of the washing stage is the lower water outlet. The washing equipment can start the running timer when the running mode starts to run, and whether the timing value of the running timer reaches any time node or not is judged, if yes, the washing equipment meets the control condition corresponding to the time node.
If the control condition is an event condition, the washing device may be configured with a plurality of trigger events, each trigger event may be associated with a corresponding trigger signal or trigger instruction, and if the washing device detects a trigger signal or trigger instruction associated with a trigger event, it is determined that the washing device satisfies the control condition corresponding to the trigger event. For example, when the washing device performs a washing operation based on a certain operation mode, when switching from one washing stage to another washing stage in the operation mode, a corresponding stage switching instruction may be generated, and each stage triggering instruction may correspond to one control condition, a water outlet associated with the washing stage, a state of a water diversion valve, and the like. Based on this, if the washing device detects a switching instruction of a certain stage, it determines whether the switching instruction of the stage is associated with a corresponding control condition related to the water diversion valve, and if so, it recognizes that the preset control condition is currently satisfied, and executes the operation of S101.
In this embodiment, each preset control condition corresponds to a state of a water diversion valve, and the state of the water diversion valve is specifically used to indicate a position where a blocking piece in the water diversion valve needs to move when the preset control condition is met, that is, a water outlet that needs to be opened. For example, if the water distribution valve includes N water outlets, where N is a positive integer greater than 1, one of the states of the water distribution valve may be a state where the nth water outlet is opened, and N is a positive integer not greater than N; of course, the shunt valve may open two or more water outlets at the same time, for example, one of the states of the shunt valve may be the state where the mth water outlet and the m +1 th water outlet are open, and m is a positive integer smaller than N. The states of the water diversion valves corresponding to the preset control conditions can be the same or different, and are determined according to washing requirements.
In this embodiment, after the washing device detects that any control condition is currently satisfied, a target state associated with the control condition may be obtained, and a water outlet that needs to be opened by the diversion valve is determined based on the target state, that is, a position that a blocking piece in the diversion valve needs to be moved or a position that a conduction outlet needs to be moved is determined.
In a possible implementation manner, before S101, the method may further include: the washing apparatus may perform a washing process corresponding to the running operation initiated by the user, and the washing process may be associated with a plurality of control conditions regarding the water distribution valve. After the washing equipment determines the current running washing process, the washing equipment can acquire the control conditions corresponding to the washing process and monitor whether any control condition is met.
In step S102, a target operation parameter associated with the target state is calculated according to a preset water spray curve equation and a corresponding environmental parameter when the shunt valve is in the target state.
In this embodiment, when the washing device performs the water feeding operation, the following components are generally used: water storage component, water pump, water path pipeline and the branch water valve of carrying water. Exemplarily, fig. 2 shows a schematic diagram of a water delivery process provided by an embodiment of the present application. Referring to fig. 2, the water storage part stores a certain amount of water, the water in the water storage part can be conveyed to the water diversion valve by starting the water pump, and the water is conveyed to the area corresponding to the water outlet according to the water outlet opened by the water diversion valve. If the washing device is a dishwasher, water can be sprayed to the corresponding area. Through above-mentioned water route can confirm, if the operating parameter of water pump is fixed, the opening size of the delivery port of water distribution valve can directly influence the water spray curve when last water is sent water to the appointed area. For example, if the head of the water outlet is small, the water spraying distance is long due to the large pressure of the water outlet; if the water outlet is completely opened, the pressure of the corresponding water outlet is smaller, the distance for spraying water is shorter, and based on the fact that the opening size of the water outlet corresponding to the water distribution valve is correlated with the water spraying curve, whether the water distribution valve is in the corresponding state can be judged through the water spraying curve.
Correspondingly, the washing equipment can be provided with corresponding pressure sensors at the water outlets, and in order to spray water to a specified area, the washing equipment needs the pressure value of the water outlet to meet a preset pressure threshold value. Based on this, the washing equipment can make the pressure value of the water outlet satisfy the pressure threshold by controlling the operation parameters of the water pump, and based on this, under the condition that the pressure value of the water outlet is fixed, the operation parameters of the water pump and the water spraying curve have a correlation, and correspondingly, the operation parameters of the water pump are also correlated with the opening size of the water outlet. Therefore, the washing equipment can determine whether the shunt valve moves to the corresponding position or not by monitoring the operation parameters of the water pump, namely whether the shunt valve is in the target state corresponding to the control condition or not, so that the shunt valve does not need to move to the preset initial position depending on the shunt valve, and the accurate control of the shunt valve can be realized. According to the existing control method of the water distribution valve, the water distribution valve can move at a preset rotating speed, washing equipment can calculate the time required by the water distribution valve to rotate for one period, the time required by the water distribution valve to move to each water outlet is determined according to the offset between each water outlet of the water distribution valve and an initial position and the determined rotating time of one period, then the water distribution valve can be reset to the initial position in actual operation, and the time corresponding to the rotation of the water distribution valve is controlled based on the calculated time required by each water outlet. However, if the detection part of the initial position is damaged during use, the above operation is not achieved, and the introduction of the detection part causes an increase in the manufacturing cost of the washing apparatus. Therefore, the above problems can be solved by monitoring the operation parameters of the water pump of the washing device to determine the opening condition of the water distribution valve.
As described above, when the opening corresponding to the shunt valve of the washing device is in the open state, the relevant parameters such as the water pump, the water spray curve, the water pressure at the water outlet and the like all have correlation and are predictable values, based on which the washing device can introduce the environmental parameters of the shunt valve in the target state into the pre-stored water spray curve equation, so that the target operation parameters corresponding to the water pump in the target state can be obtained by solving.
In a possible implementation manner, the water spray curve equation may specifically include two variables, one of which is an environmental parameter, and the other of which is a target operating parameter, and different states of the shunt valve may correspond to different constants, so that the water spray curve equation may be defined as:
f(WorkingPr)＝ω[Enviroment] i +ξ
wherein f (WorkingPr) is a target operation parameter; [ Environment] i For the above-mentioned environment parameter, i is the number of parameter items contained in the environment parameter, and may be, for example, a packageThe water pressure of the water outlet, the water level height of the water storage component and the water outlet height of the water outlet, and omega and xi are constants obtained based on the target state.
In S103, the water distribution valve is controlled to rotate, and in the process of rotating the water distribution valve, real-time operation parameters of a water pump related to the water distribution valve are monitored.
In this embodiment, when the washing device detects that the control condition is satisfied, the water diversion valve may be controlled to rotate to a target state corresponding to the control condition, so that the water diversion valve opens the water outlet corresponding to the control condition. It should be noted that, the steps S102 and S103 may be executed simultaneously, and since the diversion valve is controlled to rotate to the target state for a certain moving time, the washing device may start to rotate the diversion valve and calculate the target operation parameter through the water spray curve equation. Certainly, the washing equipment can also calculate a target operation parameter through a water spraying curve equation and then control the rotation of the water distribution valve; alternatively, the diversion valve may be rotated first, and the target operation parameters may be calculated during the rotation of the diversion valve, where the operation sequence of S102 and S103 is not limited.
In this embodiment, since the target operation parameter corresponding to the washing device is measurable when the washing device is in the target state, the washing device can determine whether the water outlet to be opened is in a completely opened state only by determining whether the real-time operation parameter of the water pump is consistent with the target operation parameter. If the real-time operation parameter is not matched with the target operation parameter, the shunt valve is not rotated to a target state, and the washing equipment continues to control the shunt valve to rotate at the moment; otherwise, if the real-time operation parameter matches the target operation parameter, the operation of S104 is executed.
In a possible implementation manner, the washing device may be configured with a floating interval, and if a difference value between a real-time operation parameter acquired by the washing device and a target operation parameter is within the floating interval, the two parameters are identified to be matched; otherwise, if the difference value between the two parameters is outside the floating interval, the two parameters are identified to be not matched. The interval size of the floating interval can be judged according to the accuracy of the water distribution valve.
In a possible implementation manner, because the environmental parameters corresponding to the water delivered by the washing equipment may change, the washing equipment can collect the environmental parameters at a preset collection frequency, update the target operation parameters based on the collected environmental parameters at each time, and compare the real-time operation parameters with the updated target operation parameters, so that the accuracy of the control of the water distribution valve can be improved.
In S104, if the real-time operation parameter matches the target operation parameter, the shunt valve is stopped from rotating, and the shunt valve is identified as being in the target state.
In this embodiment, if the washing device detects that the real-time operation parameter matches the target operation parameter, it recognizes that the diversion valve is already in the target state corresponding to the control condition, and at this time, the diversion valve may stop rotating.
It can be seen from the above that, in the control method of the water diversion valve provided in the embodiment of the present invention, when the water diversion valve needs to be controlled to rotate to the corresponding target state, the corresponding environmental parameter of the water diversion valve in the target state is introduced into the preset water spray curve equation, so as to calculate the target operation parameter associated with the target state, where the target operation parameter is specifically used to represent the target parameter of the water pump corresponding to the water diversion valve when the water diversion valve is in the target state; then, the washing equipment can control the rotation of the water distribution valve, and the running condition of the water pump corresponding to the water distribution valve is monitored in real time in the rotation process of the water distribution valve, so that the real-time running parameters are obtained. Compared with the control technology of the existing water distribution valve, the control method and the control device have the advantages that the water distribution valve does not reset to the initial position, the water outlet condition of the washing equipment is determined according to the running condition of the water pump, different water outlet conditions correspond to different water outlets, so that whether the water distribution valve rotates to the corresponding state or not can be determined according to the running parameters of the water pump, the water distribution valve can be controlled based on the running parameters of the water pump, the control accuracy of the water distribution valve is improved, and the situation that the water distribution valve cannot be controlled due to abnormal resetting is avoided.
Fig. 3 shows a flowchart of an implementation of the method S102 for controlling the water diversion valve according to the second embodiment of the present invention. Referring to fig. 3, with respect to the embodiment shown in fig. 1, in the method for controlling a water diversion valve provided in this embodiment, S102 includes: s1021 to S1022 are specifically described below:
further, the calculating a target operation parameter associated with the target state according to a preset water spray curve equation and a corresponding environment parameter when the shunt valve is in the target state includes:
in S1021, a water level height corresponding to the water pump performing a water sucking operation is determined, and a water outlet height associated with the target state is determined.
In this embodiment, the environmental parameters acquired by the washing device include three types, which are:
1. when the water pump sucks water from the water storage component, the position of the water inlet of the water pump is the water level height. When the water pump sucks water from the water storage part, if the height difference between the water sucking position and the water spraying position is larger, the power required by the water pump is larger, and therefore the water level height directly influences the power of the water pump.
2. The position of the water outlet opened by the water diversion valve in the target state is the water outlet height. The water level difference is required to be determined corresponding to the water inlet position of the water pump, and the position of the water outlet of the water pump is required to be known besides the position of the water inlet, so that the water outlet height of the water outlet in the target state is required to be determined, and the water level difference of the water pump can be determined based on the water level height and the water outlet height.
3. Other waterway parameters related to the operation of the water pump. For example, the waterway parameters may include: the length of the water path, the diameter of the water pipe, the caliber of the water outlet in a fully opened state and the like.
In a possible implementation, the water level height and the water outlet height may be fixed values, in which case the washing apparatus may store the two height values in readable registers, and the washing apparatus may read the two parameters from the registers.
In a possible implementation manner, the water level height may be a floating value, the water inlet of the water pump may be configured with a position sensor, and the washing device may determine the water level height corresponding to the water inlet of the water pump by reading a feedback value fed back by the position sensor.
In this embodiment, since positions of different water outlets may be different, when the washing apparatus detects that a certain control condition is met, it is necessary to first determine the water outlet corresponding to the control condition, and determine a water outlet height corresponding to the water outlet.
In S1022, the water spray curve equation is constructed according to the water level height, the water outlet height, and the waterway parameter corresponding to the delivery waterway.
In this embodiment, the washing device may store a waterway parameter corresponding to the water path, and since the water path is not changed at will after the washing device is manufactured, for example, the length of the waterway, the diameter of the pipeline of the waterway, and the like belong to fixed parameters, the washing device may obtain the waterway parameter by directly reading the waterway parameter from the memory.
In this embodiment, the washing apparatus may generate a water spray curve equation based on the above three parameters (i.e., the water outlet height, the water level height, and the waterway parameter). The washing equipment can store an equation template, and the three parameters are led into a preset equation template, so that the water spray curve equation can be obtained.
Further, as another embodiment of the present application, the target operation parameters include: target head and/or target operating power;
the waterway parameters comprise: a first friction coefficient in the water pump, a second friction coefficient of the pipeline, the water pump flow and a corresponding reference lift when the water pump flow is zero;
the water spray curve equation is specifically as follows:
wherein H is the target lift; p is the target operating power; s 0 Is the first coefficient of friction resistance; s is the second friction coefficient; q is the flow of the water pump; h 0 Is the baseline lift; z 1 Is the water level height; z 2 Is the water outlet height; g is a gravitational acceleration constant.
In this embodiment, the washing device may determine the selected water spray curve equation according to a parameter item specifically included in the target operation parameter, and if the target operation parameter includes the target lift, may calculate the target operation parameter by using formula (1) or formula (2); if the target operation parameter includes the operation power, the target lift can be calculated by using the formula (1) or the formula (2), and then the target operation power is calculated by using the formula (3).
In this embodiment, the lift specifically refers to the farthest vertical spraying height when the water outlet sprays water. Therefore, the lift is related to the water pressure corresponding to the water outlet, and if the water pressure is higher, the corresponding lift is higher; on the contrary, if the water pressure is smaller, the corresponding lift is smaller. The washing equipment can measure the lift through the pressure value fed back by the pressure sensor at the water outlet and through a conversion algorithm between the pressure value and the lift.
In one implementation scenario: the motor of the water pump in the washing equipment can operate at a fixed rotating speed, the washing equipment can acquire real-time operation parameters corresponding to the motor of the water pump during operation, such as the current actual working current or actual working power of the motor, or the real-time water pressure of the water outlets (the real-time lift is obtained based on real-time water pressure calculation), and when the shifting piece of the water distribution valve blocks one of the water outlets, the pipeline resistance is increased; the corresponding rotating speed, actual working current, actual working power and current pipeline water pressure of the washing pump can generate corresponding changes, and if the actual working current of the washing pump is increased. The washing device is generally divided into an upper nozzle and a lower nozzle, so as to correspond to two water outlet paths, wherein the water outlet position of the upper water outlet pipeline is higher than that of the lower water outlet pipeline, so that the corresponding height difference is larger, and the corresponding operating power is also larger. Based on this, the shunt valve is under different states, for example when a plurality of delivery ports are all blockked up and all switched on, the rotational speed, the actual operating current, the actual operating power and the current pipeline water pressure of water pump motor can be different. Therefore, the state of the water distribution valve can be judged only by monitoring one or more items of data of the rotating speed, the actual working current, the actual working power and the current pipeline water pressure of the washing pump.
In a possible implementation mode, a lower spray pipe is blocked, an upper spray pipe is conducted, namely when the washing equipment sends water through an upper spray water outlet, the working current of a motor of the water pump is A ampere; the upper spray pipe is blocked, the lower spray pipe is conducted, namely when the washing equipment sends water through the lower spray water port, the working current of the water pump motor is B amperes; when the upper spraying pipeline and the lower spraying pipeline are conducted, namely water is delivered through the upper water outlet and the lower water outlet, the current working current of a motor of the water pump is C amperes; if the upper spray pipe is longer than the first pipe of the washing pump than the lower spray pipe, the following relationship can be obtained: b > A > C. The washing equipment can judge which water outlet is opened according to the corresponding relation.
In the embodiment of the application, the corresponding water spraying curve mode is constructed by determining the water outlet height, the water level height and the water path parameters related to the water supply path of the washing equipment, so that the water spraying curve mode can be matched with a target state, and the control accuracy of the shunt valve is improved.
Fig. 4 shows a flowchart of a detailed implementation of the method S103 for controlling the water diversion valve according to the third embodiment of the present invention. Referring to fig. 4, with respect to the embodiment shown in fig. 3, the method S103 for controlling the water diversion valve provided in this embodiment includes steps S401 to S403, which are detailed as follows:
further, if the target operation parameter includes the target lift, the controlling the water diversion valve to rotate, and monitoring a real-time operation parameter of a water pump associated with the water diversion valve in a process of rotating the water diversion valve, including:
in S401, water pressure values fed back by pressure sensors placed at the water outlets of the water distribution valve are obtained.
In this embodiment, when the parameter to be monitored by the washing equipment is the lift, that is, the target operation parameter calculated by the water spray curve equation includes the target lift, in this case, the washing equipment needs to monitor the real-time lift corresponding to the water outlet corresponding to the target state in real time. However, because the lift is difficult to directly obtain, but because the lift and the pressure value of the water outlet have a corresponding relationship, the washing equipment can obtain the pressure value corresponding to the water outlet, so that the lift corresponding to the water outlet is determined by the pressure value.
In this embodiment, each water outlet of the washing apparatus may be configured with a corresponding pressure sensor, and each pressure sensor may be associated with a label of the corresponding water outlet. After the target state to which the water diversion valve needs to rotate is determined, the washing equipment can inquire the label of the water outlet corresponding to the target state, determine the pressure sensor associated with the label based on the label of the water outlet corresponding to the target state, and determine the pressure value of the water outlet corresponding to the target state based on the numerical value fed back by the pressure sensor.
In S402, a real-time lift associated with a preset water pressure value is calculated based on a conversion relationship between the water pressure value and a pump lift.
In this embodiment, after the water pressure value of the water outlet associated with the target state is determined, the washing device may introduce the water pressure value into a conversion relationship between a preset water pressure value and a pump lift, so as to calculate a real-time pump lift associated with the water pressure value. If the water pressure value of the water outlet is larger, the numerical value of the real-time lift obtained through calculation is larger; on the contrary, if the water pressure value of the water outlet is smaller, the calculated real-time head value is smaller. Optionally, there is a positive correlation between real-time head and water pressure value.
In S403, the real-time lift is taken as the real-time operation parameter.
In this embodiment, the washing device may determine whether the shunt valve rotates to the target state by detecting the real-time lift, using the real-time lift calculated as described above as a real-time operation parameter.
In the embodiment of the invention, the real-time lift corresponding to the water pressure value can be calculated by obtaining the water pressure value of the water outlet, the monitoring of the water outlet state of the water outlet is realized, whether the water outlet is completely opened or not is judged, whether the water distribution valve needs to be rotated continuously or not is determined, the water distribution valve can be accurately controlled without depending on reset operation, and the control accuracy of the water distribution valve is improved.
Fig. 5 shows a flowchart of a detailed implementation of the method S103 for controlling the water diversion valve according to the fourth embodiment of the present invention. Referring to fig. 5, with respect to the embodiment shown in fig. 3, a method S103 for controlling a water diversion valve provided in this embodiment includes: S501-S502 are detailed as follows:
further, if the target operation parameter includes the target operation power, the controlling the rotation of the water diversion valve, and monitoring a real-time operation parameter of a water pump associated with the water diversion valve in a process of the rotation of the water diversion valve, includes:
in S501, acquiring a real-time electrical index of the water pump, and acquiring real-time operation power of the water pump based on the real-time electrical index; the real-time electrical indicators include: a real-time voltage value, a real-time current value, and/or a real-time operating power.
In this embodiment, when the parameter to be monitored by the washing equipment is the operating power, the washing equipment needs to monitor the real-time operating power corresponding to the motor of the water pump in real time, and since the real-time operating power of the motor can be measured based on various modes, for example, the washing equipment is provided with a power measurement component, the real-time operating power of the washing equipment can be directly monitored, that is, the real-time electrical index is the real-time operating power; if the washing equipment is provided with a voltage measuring component, a real-time voltage value of the washing equipment can be obtained, namely the real-time electrical index is the real-time voltage value, and the real-time running power of the water pump is determined based on the conversion relation between the voltage and the power; correspondingly, if the washing equipment is provided with a current measuring component, the real-time current value of the washing equipment can be obtained, and the real-time operation power of the water pump is determined based on the conversion relation between the current and the power.
In one possible implementation, the washing apparatus may obtain two or more electrical indexes at the same time, such as obtaining a real-time voltage value and a real-time current value, or obtaining a real-time current value and a real-time operating power. In this case, the washing device may calculate the real-time operation power according to the obtained multiple electrical indexes, and the specific calculation process may be determined according to the type of the collected real-time electrical index.
In S502, the real-time operation power is used as the real-time operation parameter.
In this embodiment, the washing device may determine whether the shunt valve is rotated to the target state by detecting the real-time operation power, using the real-time operation power obtained by the calculation as a real-time operation parameter.
It should be noted that, when executing S103, the washing apparatus may be implemented in a manner of S401 to S403, may also be implemented in a manner of S501 to S502, and optionally may also obtain real-time operation parameters in two manners of S401 to S403 and S501 to S502 at the same time, thereby improving the accuracy of the control of the diversion valve.
In the embodiment of the invention, the real-time operation power of the water pump is determined by acquiring the electrical index of the motor of the water pump, and whether the water diversion valve rotates to the target state is determined based on the real-time operation power, so that the water diversion valve can be accurately controlled without depending on reset operation, and the control accuracy of the water diversion valve is improved.
Fig. 6 is a flowchart illustrating an implementation of a control method of a water diversion valve according to a fifth embodiment of the present invention. Referring to fig. 6, with respect to the embodiment shown in any one of fig. 1 to 5, the method for controlling a water diversion valve provided in this embodiment further includes, after S103: s601 to S602 are specifically described as follows:
after controlling the rotation of the water distribution valve and monitoring the real-time operation parameters of the water pump associated with the water distribution valve in the process of the rotation of the water distribution valve, the method further comprises the following steps:
in S601, if all the real-time operation parameters monitored in a preset rotation period are not matched with the target operation parameter, the output power of the water pump is increased.
In this embodiment, if the environmental parameter of the washing device is changed during the use process, for example, the friction resistance of the water path for conveying water is increased, or the internal resistance of the motor of the water pump is increased, or the water path is blocked to some extent, in this case, even if the water diversion valve rotates to a preset target state, the real-time operation parameters collected by the washing device are not matched with the target operation parameters. Therefore, in order to eliminate the error caused by the environmental parameter, the electronic device may appropriately increase the output power of the water pump in the washing device, so that the real-time operation parameter of the washing device can be matched with the target operation parameter when the shunt valve is rotated to the target state (i.e. the water outlet is in the fully opened state).
In this embodiment, the shunt valve of the washing device may rotate at a preset rotation speed, in this case, the time of one rotation cycle of the shunt valve is fixed, and the washing device may obtain the time required for one rotation cycle of the shunt valve, so as to obtain the rotation cycle.
In S602, the water spray curve equation is adjusted based on the increased output power, and the target operating parameter is updated according to the adjusted water spray curve equation.
In this embodiment, since the output power of the water pump of the washing device is increased, the relevant parameters in the corresponding water spray curve equation also need to be adaptively adjusted, based on which, the electronic device may increase or decrease the corresponding parameters in equal proportion according to the increase of the output power, so that the water spray curve equation is matched with the current environmental parameters.
In this embodiment, the washing device may recalculate the target operation parameter based on the adjusted water spray curve equation, return to the control of the rotation of the water distribution valve, monitor the operation of the real-time operation parameter of the water pump associated with the water distribution valve during the rotation of the water distribution valve, and determine whether the real-time operation parameter matches the target operation parameter.
In one possible implementation, the washing apparatus may increase the output power of the water pump by a preset adjustment step size, and calculate the target operation parameter based on the increased output power. If the real-time operation parameter of the washing equipment is not detected to be matched with the adjusted target operation parameter in the rotation period, the output power of the water pump is increased by the adjusting step length again, and the like until the real-time operation parameter is matched with the target operation parameter. Optionally, the washing device may further be configured with a maximum power value, and when the output power of the water pump is increased by the adjustment step size, and it is detected that the adjusted output power is greater than the maximum power value, the information about the abnormality of the washing device is output, that is, the washing device cannot eliminate the change of the environmental parameter by increasing the power, and the user is required to perform abnormality treatment on the washing device.
In the embodiment of the application, the running power of the water pump is increased, so that the influence caused by the change of environmental parameters is avoided, and the control precision of the shunt valve can be improved.
Fig. 7 is a flowchart illustrating a specific implementation of a control method for a water diversion valve according to a sixth embodiment of the present invention. Referring to fig. 7, with respect to the embodiment described in any one of fig. 1 to 5, the method for controlling a water diversion valve provided in this embodiment further includes, after S103: S701-S702, the details are as follows:
after controlling the rotation of the water distribution valve and monitoring the real-time operation parameters of the water pump associated with the water distribution valve in the process of the rotation of the water distribution valve, the method further comprises the following steps:
in S701, if all the real-time operation parameters monitored in a preset rotation period are not matched with the target operation parameters, valve blockage information corresponding to the target state is generated.
In this embodiment, if the washing device detects that any one of the acquired real-time operation parameters is not matched with the target operation parameter in one rotation period, it indicates that there is a possibility that the waterway of the washing device is blocked or the water outlet is blocked by another object, so that the washing device cannot be completely opened. The washing equipment can display the valve blockage information through a local interaction module or inform a user in a flashing warning lamp mode. Optionally, the washing device may further send the valve blockage information to a user terminal corresponding to the user.
In the embodiment of the application, the washing equipment can automatically detect the blocking condition and inform a user to process the abnormal condition, so that the abnormal condition can be found in time, and the repairing efficiency of the abnormal condition is improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 8 is a block diagram illustrating a washing apparatus according to an embodiment of the present invention, wherein the washing apparatus includes units for performing the steps of the embodiment shown in fig. 1. Please refer to fig. 1 and fig. 1 for the corresponding description of the embodiment. For convenience of explanation, only the portions related to the present embodiment are shown.
Referring to fig. 8, the washing apparatus includes:
a water diversion valve rotating unit 801, configured to determine a target state associated with a preset control condition about a water diversion valve if the preset control condition is satisfied;
a target operation parameter calculation unit 802, configured to calculate a target operation parameter associated with the target state according to a preset water spray curve equation and a corresponding environment parameter when the shunt valve is in the target state;
a real-time operation parameter monitoring unit 803, configured to control rotation of the water diversion valve, and monitor a real-time operation parameter of a water pump associated with the water diversion valve in a rotation process of the water diversion valve;
and a valve state determination unit 804, configured to stop rotation of the shunt valve and recognize that the shunt valve is in the target state if the real-time operation parameter matches the target operation parameter.
Optionally, the target operation parameter calculating unit 802 includes:
the height parameter acquisition unit is used for determining the corresponding water level height when the water pump performs water absorption operation and determining the water outlet height related to the target state;
and the water spray curve equation framework unit is used for constructing the water spray curve equation according to the water level height, the water outlet height and the waterway parameters corresponding to the conveying waterway.
Optionally, the target operating parameter includes: a target head and/or a target operating power;
the waterway parameters comprise: a first friction coefficient in the water pump, a second friction coefficient of the pipeline, the water pump flow and a corresponding reference lift when the water pump flow is zero;
the water spray curve equation is specifically as follows:
wherein H is the target lift; p is the target operating power; s 0 Is the first coefficient of friction resistance; s is the second friction coefficient; q is the flow of the water pump; h 0 Is the reference lift; z 1 Is the water level height; z 2 Is the water outlet height; g is a gravitational acceleration constant.
Optionally, if the target operation parameter includes the target lift, the real-time operation parameter monitoring unit 803 includes:
the water pressure value acquisition unit is used for acquiring water pressure values fed back by pressure sensors arranged at the water outlets of the water distribution valve;
the real-time lift conversion unit is used for calculating a real-time lift associated with a water pressure value based on a conversion relation between a preset water pressure value and a water pump lift;
and the real-time lift monitoring unit is used for taking the real-time lift as the real-time operation parameter.
Optionally, if the target operation parameter includes the target operation power, the real-time operation parameter monitoring unit 803 includes:
the electric index acquisition unit is used for acquiring a real-time electric index of the water pump and obtaining real-time running power of the water pump based on the real-time electric index; the real-time electrical indicators include: a real-time voltage value, a real-time current value, and/or a real-time operating power;
and the real-time operation power monitoring unit is used for taking the real-time operation power as the real-time operation parameter.
Optionally, the washing apparatus further comprises:
the output power adjusting unit is used for increasing the output power of the water pump if all the real-time operation parameters obtained by monitoring in a preset rotation period are not matched with the target operation parameters;
and the water spray curve equation updating unit is used for adjusting the water spray curve equation based on the increased output power and updating the target operation parameter according to the adjusted water spray curve equation.
Optionally, the washing apparatus further comprises:
and the valve blockage information output unit is used for generating valve blockage information corresponding to the target state if all the real-time operation parameters obtained by monitoring in a preset rotation period are not matched with the target operation parameters.
Therefore, the washing equipment provided by the embodiment of the invention can also lead the corresponding environmental parameters of the water distribution valve in the target state into the preset water spray curve equation when the water distribution valve needs to be controlled to rotate to the corresponding target state, so as to calculate the target operation parameters related to the target state, wherein the target operation parameters are specifically used for representing the target parameters of the water pump corresponding to the water distribution valve when the water distribution valve is in the target state; then, the washing equipment can control the rotation of the shunt valve, and the running condition of the water pump corresponding to the shunt valve is monitored in real time in the rotation process of the shunt valve, so that the real-time running parameters are obtained. Compared with the control technology of the existing water distribution valve, the control method and the control device have the advantages that the water distribution valve does not reset to the initial position, the water outlet condition of the washing equipment is determined according to the running condition of the water pump, different water outlet conditions correspond to different water outlets, so that whether the water distribution valve rotates to the corresponding state or not can be determined according to the running parameters of the water pump, the water distribution valve can be controlled based on the running parameters of the water pump, the control accuracy of the water distribution valve is improved, and the situation that the water distribution valve cannot be controlled due to abnormal resetting is avoided.
Fig. 9 is a schematic view of a washing apparatus according to another embodiment of the present invention. As shown in fig. 9, the washing apparatus 9 of this embodiment includes: a processor 90, a memory 91 and a computer program 92, such as a control program for a water diversion valve, stored in said memory 91 and executable on said processor 90. The processor 90, when executing the computer program 92, implements the steps in the above-mentioned embodiments of the control method for the water diversion valve, such as S101 to S103 shown in fig. 1. Alternatively, the processor 90, when executing the computer program 92, implements the functions of the units in the device embodiments described above, such as the functions of the modules 91 to 93 shown in fig. 9.
Illustratively, the computer program 92 may be divided into one or more units, which are stored in the memory 91 and executed by the processor 90 to carry out the invention. The one or more units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 92 in the washing apparatus 9. For example, the computer program 92 may be divided into a status response unit to be recognized, a fan identification configuration unit, and a target script configuration unit, and the specific functions of each unit are as described above.
The washing apparatus may include, but is not limited to, a processor 90, a memory 91. It will be appreciated by those skilled in the art that FIG. 9 is merely an example of a washing appliance 9, and does not constitute a limitation of the washing appliance 9, and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the washing appliance may also include input-output devices, network access devices, a bus, etc.
The Processor 90 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 91 may be an internal storage unit of the washing apparatus 9, such as a hard disk or a memory of the washing apparatus 9. The memory 91 may also be an external storage device of the washing apparatus 9, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) and the like provided on the washing apparatus 9. Further, the memory 91 may also include both an internal storage unit and an external storage device of the washing device 9. The memory 91 is used for storing the computer program and other programs and data required by the washing apparatus. The memory 91 may also be used to temporarily store data that has been output or is to be output.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; 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; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A control method of a water diversion valve is characterized by comprising the following steps:
if the preset control condition about the water diversion valve is met, determining a target state related to the control condition;
calculating target operation parameters related to the target state according to a preset water spray curve equation and corresponding environment parameters when the water distribution valve is in the target state;
controlling a water distribution valve to rotate, and monitoring real-time operation parameters of a water pump associated with the water distribution valve in the process of rotating the water distribution valve;
and if the real-time operation parameters are matched with the target operation parameters, stopping the rotation of the water distribution valve, and recognizing that the water distribution valve is in the target state.
2. The control method according to claim 1, wherein the calculating of the target operation parameters associated with the target state according to a preset water spray curve equation and corresponding environmental parameters when the water distribution valve is in the target state comprises:
determining the corresponding water level height when the water pump performs water absorption operation, and determining the water outlet height associated with the target state;
and constructing the water spray curve equation according to the water level height, the water outlet height and the waterway parameter corresponding to the conveying waterway.
3. The control method of claim 2, wherein the target operating parameter comprises: target head and/or target operating power;
the waterway parameters comprise: a first friction coefficient in the water pump, a second friction coefficient of the pipeline, the flow rate of the water pump and a corresponding reference lift when the flow rate of the water pump is zero;
the water spray curve equation is specifically as follows:
wherein H is the target lift; p is the target operating power; s 0 Is the first coefficient of friction resistance; s is the second friction coefficient; q is the flow of the water pump; h 0 Is the baseline lift; z is a linear or branched member 1 Is the water level height; z 2 Is the water outlet height; g is a gravitational acceleration constant.
4. The control method of claim 3, wherein if the target operational parameter comprises the target lift, controlling the diverter valve to rotate and monitoring a real-time operational parameter of a water pump associated with the diverter valve during rotation of the diverter valve comprises:
acquiring water pressure values fed back by pressure sensors placed at each water outlet of the water distribution valve;
calculating a real-time lift associated with a water pressure value based on a conversion relation between a preset water pressure value and a water pump lift;
and taking the real-time lift as the real-time operation parameter.
5. The control method of claim 3, wherein if the target operating parameter comprises the target operating power, the controlling the diverter valve to rotate and monitoring a real-time operating parameter of a water pump associated with the diverter valve during rotation of the diverter valve comprises:
acquiring a real-time electrical index of the water pump, and acquiring real-time operation power of the water pump based on the real-time electrical index; the real-time electrical indicators include: a real-time voltage value, a real-time current value, and/or a real-time operating power;
and taking the real-time operation power as the real-time operation parameter.
6. The control method according to any one of claims 1-5, further comprising, after controlling the rotation of the diverter valve and monitoring real-time operating parameters of a water pump associated with the diverter valve during the rotation of the diverter valve:
if all the real-time operation parameters obtained by monitoring in a preset rotation period are not matched with the target operation parameters, increasing the output power of the water pump;
and adjusting the water spray curve equation based on the increased output power, and updating the target operation parameter according to the adjusted water spray curve equation.
7. The control method according to any one of claims 1-5, further comprising, after controlling the rotation of the diverter valve and monitoring real-time operating parameters of a water pump associated with the diverter valve during the rotation of the diverter valve:
and if all the real-time operation parameters monitored in a preset rotation period are not matched with the target operation parameters, generating valve blockage information corresponding to the target state.
8. A control device for a diverter valve, comprising:
the water diversion valve rotating unit is used for determining a target state related to a preset control condition if the preset control condition related to the water diversion valve is met;
the target operation parameter calculation unit is used for calculating target operation parameters related to the target state according to a preset water spray curve equation and corresponding environment parameters when the water distribution valve is in the target state;
the real-time operation parameter monitoring unit is used for controlling the rotation of the water distribution valve and monitoring the real-time operation parameters of the water pump related to the water distribution valve in the rotation process of the water distribution valve;
and the valve state judging unit is used for stopping the rotation of the water distribution valve and recognizing that the water distribution valve is in the target state if the real-time operation parameters are matched with the target operation parameters.
9. Washing device, characterized in that it comprises a memory, a processor and a computer program stored in said memory and executable on said processor, said processor executing the steps of the method according to any one of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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| US6189556B1 (en) * | 1998-11-10 | 2001-02-20 | Shasta Industries, Inc. | Low profile, low resistance distribution valve and method for swimming pools |
| JP3835400B2 (en) * | 2002-11-18 | 2006-10-18 | 松下電器産業株式会社 | dishwasher |
| CN103591458B (en) * | 2012-08-17 | 2017-04-12 | 诺发系统公司 | Flow balancing in gas distribution networks |
| DE102014220021B3 (en) * | 2014-10-02 | 2016-02-04 | BSH Hausgeräte GmbH | Laundry care device with a control |
| CN110939757A (en) * | 2019-10-25 | 2020-03-31 | 福建西河卫浴科技有限公司 | Water diversion valve and water diversion faucet |
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