Intelligent water meter with water cleaning and automatic flushing functions and control method thereof

Abstract

The present invention provides an intelligent water meter with water cleaning and automatic flushing and a control method thereof. The intelligent water meter includes a housing, a main line located in the housing, a water meter module, a filter module, a flushing branch and a control module. The control module obtains the degree of dirtiness and blockage of the filter element. When the degree of dirtiness and blockage of the filter element does not require flushing, the filter element is placed in a filtering and water-making state; when the degree of dirtiness and blockage of the filter element requires flushing, the filter element to be flushed is placed in a forward flushing and reverse flushing state; or, the filter element to be flushed is placed in a forward flushing state. Therefore, the filter module of the intelligent water meter of the present invention can filter and purify the water source entering the user's home to ensure the user's water safety. When the filter element needs to be flushed, the present invention can flush the flushing filter element forward or forward and reverse flushing to ensure the service life and filtering effect of the filter element.

Description

Technical Field

[0001] The invention belongs to the technical field of water metering, and in particular relates to an intelligent water meter with water cleaning and automatic flushing functions and a control method thereof. Background Art

[0002] With the increasing severity of water pollution, the quality of tap water cannot be guaranteed, especially the secondary water supply on high floors is more prone to water pollution.

[0003] In order to ensure the water safety of users, water purifiers are usually installed on water pipes. Water purifiers need to be installed twice, and existing pipes need to be modified, which will cause the risk of water leakage. Moreover, most water pipes in current decoration are concealed pipes, which limits the installation of water purifiers. Therefore, existing water purifiers are generally installed in kitchen cabinets, which can only purify kitchen water, but not all water.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The present invention provides an intelligent water meter with water cleaning and automatic flushing functions and a control method thereof, so as to solve the technical problems that existing users need to install water purification equipment separately, which is prone to water leakage and installation restrictions.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] An intelligent water meter with water cleaning and automatic flushing functions, comprising:

[0008] case;

[0009] A main pipeline is located in the shell;

[0010] A water meter module, located on the main pipe;

[0011] The smart water meter also includes:

[0012] A filter module, located on the main pipe and used for filtering water in the main pipe, the filter module comprises at least two parallel filter branches, the filter branches are provided with a filter element and a switch, the filter element comprises a water inlet, a water outlet and a sewage outlet, the water outlet is connected to the switch;

[0013] A flushing branch connected to the sewage outlet of the filter element, each filter element corresponds to a flushing branch, and a flushing switch is provided on the flushing branch;

[0014] A control module is used to obtain the degree of dirtiness and blockage of the filter element; the control module is used to control the smart water meter to be in a filtering and water-making state when the filter element does not need to be flushed due to the degree of dirtiness and blockage: at least one switch is turned on and all flushing switches are turned off; the control module is used to control the smart water meter to be in a forward flushing and reverse flushing state of the filter element to be flushed when the filter element needs to be flushed due to the degree of dirtiness and blockage: all switches are turned on, the flushing switch corresponding to the filter element to be flushed is turned on, and other flushing switches are turned off, or the smart water meter is controlled to be in a forward flushing state of the filter element to be flushed: the flushing switch corresponding to the filter element to be flushed is turned on, other flushing switches are turned off, the switch corresponding to the filter element to be flushed is turned off, and other switches are turned on.

[0015] The smart water meter as described above comprises a pressure detection module for detecting the pressure value downstream of the filter module, and the control module is used to judge that the degree of dirtiness of the filter element does not need to be flushed when the pressure value detected by the pressure detection module is less than the set threshold value corresponding to the total water flow rate detected by the water meter module at this time; and is also used to judge that the degree of dirtiness of the filter element needs to be flushed when the pressure value detected by the pressure detection module is greater than or equal to the set threshold value corresponding to the total water flow rate detected by the water meter module at this time;

[0016] Alternatively, the smart water meter includes an upstream pressure sensor located upstream of the filter module and a downstream pressure sensor located downstream of the filter module; the control module is used to judge that the filter element is dirty enough and does not need to be flushed when the pressure difference detected by the upstream pressure sensor and the downstream pressure sensor is less than a set threshold value corresponding to the total water flow detected by the water meter module at this time; and is also used to judge that the filter element is dirty enough and needs to be flushed when the pressure difference detected by the upstream pressure sensor and the downstream pressure sensor is greater than or equal to the set threshold value corresponding to the total water flow detected by the water meter module at this time.

[0017] As described above, the smart water meter includes a storage module for storing a number of set thresholds corresponding to the total water flow rate, or for storing a calculation formula for the set threshold corresponding to the total water flow rate.

[0018] In the smart water meter as described above, the control module is used to control the filter elements to be flushed to be flushed in sequence.

[0019] For the smart water meter as described above, the control module is used to control the smart water meter to be in a forward flushing and reverse flushing state of the filter element to be flushed when the filter element is dirty and blocked to a degree that flushing is required and the total water flow rate is within a first set threshold range;

[0020] When the filter element is dirty to the extent that flushing is required and the total water flow rate is within a second set threshold range, controlling the smart water meter to be in a forward flushing state of the filter element to be flushed;

[0021] When the filter element is dirty enough to be flushed and the total water flow rate is within a third set threshold range, controlling the smart water meter to be in a filtering and water-making state;

[0022] The minimum value of the third set threshold range is greater than or equal to the maximum value of the second set threshold range, and the minimum value of the second set threshold range is greater than or equal to the maximum value of the first set threshold range.

[0023] The smart water meter as described above, further comprising:

[0024] A flow sensor, located downstream of the filter module on the main pipe, for detecting actual water flow;

[0025] The control module is used to control the smart water meter to be in a forward flushing and reverse flushing state of the filter element to be flushed when the filter element needs to be flushed due to dirtiness and blockage and the actual water flow rate is within a first set threshold range;

[0026] When the filter element is dirty to the extent that flushing is required and the actual water flow rate is within a second set threshold range, controlling the smart water meter to be in a forward flushing state of the filter element to be flushed;

[0027] When the filter element is dirty enough to be flushed and the actual water flow rate is within a third set threshold range, the smart water meter is in a filtering water production state;

[0028] The minimum value of the third set threshold range is greater than or equal to the maximum value of the second set threshold range, and the minimum value of the second set threshold range is greater than or equal to the maximum value of the first set threshold range.

[0029] A control method for a smart water meter, the smart water meter comprising a housing, a main pipe located in the housing, a water meter module located on the main pipe, a filter module and a flushing branch, the filter module comprising at least two parallel filter branches, a filter element and a switch being arranged on the filter branch, the filter element comprising a water inlet, a water outlet and a sewage outlet, the water outlet being connected to the switch, the flushing branch being connected to the sewage outlet of the filter element, each filter element corresponding to a flushing branch, the flushing branch being provided with a flushing switch, the control method being:

[0030] Obtaining the degree of dirtiness and blockage of the filter element;

[0031] When the filter element is dirty and blocked to such an extent that flushing is not required, the smart water meter is controlled to be in a filtering and water-making state: at least one switch is turned on and all flushing switches are turned off;

[0032] When the filter element needs to be flushed due to the dirtiness and blockage, the smart water meter is controlled to be in the forward flushing and reverse flushing state of the filter element to be flushed: all switches are turned on, the flushing switch corresponding to the filter element to be flushed is turned on, and other flushing switches are turned off; or, the smart water meter is controlled to be in the forward flushing state of the filter element to be flushed: the flushing switch corresponding to the filter element to be flushed is turned on, other flushing switches are turned off, the switch corresponding to the filter element to be flushed is turned off, and other switches are turned on.

[0033] According to the control method of the smart water meter as described above, the filter elements to be flushed are flushed sequentially.

[0034] The control method of the smart water meter as described above, the method further includes:

[0035] When the filter element is dirty and blocked to a degree that flushing is required and the total water flow rate is within a first set threshold range, the smart water meter is controlled to be in a forward flushing and reverse flushing state of the filter element to be flushed;

[0036] When the filter element is dirty to the extent that flushing is required and the total water flow rate is within a second set threshold range, controlling the smart water meter to be in a forward flushing state of the filter element to be flushed;

[0037] When the filter element is dirty enough to be flushed and the total water flow rate is within a third set threshold range, controlling the smart water meter to be in a filtering and water-making state;

[0038] The minimum value of the third set threshold range is greater than or equal to the maximum value of the second set threshold range, and the minimum value of the second set threshold range is greater than or equal to the maximum value of the first set threshold range.

[0039] The control method of the smart water meter as described above, wherein the smart water meter includes a flow sensor located downstream of the filter module on the main pipe, and the control method further includes:

[0040] The flow sensor detects the actual water flow;

[0041] When the filter element is dirty and blocked to a degree that flushing is required and the actual water flow rate is within a first set threshold range, the smart water meter is controlled to be in a forward flushing and reverse flushing state of the filter element to be flushed;

[0042] When the filter element is dirty to the extent that flushing is required and the actual water flow rate is within a second set threshold range, controlling the smart water meter to be in a forward flushing state of the filter element to be flushed;

[0043] When the filter element is dirty enough to be flushed and the actual water flow rate is within a third set threshold range, controlling the smart water meter to be in a filtering and water-making state;

[0044] The minimum value of the third set threshold range is greater than or equal to the maximum value of the second set threshold range, and the minimum value of the second set threshold range is greater than or equal to the maximum value of the first set threshold range.

[0045] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the smart water meter of the present invention includes a housing, a main line located in the housing, a water meter module, a filter module, a flushing branch and a control module. The control module obtains the degree of dirtiness and blockage of the filter element, and when the degree of dirtiness and blockage of the filter element does not require flushing, the filter element is placed in a filtering and water-making state; when the degree of dirtiness and blockage of the filter element requires flushing, the filter element to be flushed is placed in a forward flushing and reverse flushing state: or, the filter element to be flushed is placed in a forward flushing state. Therefore, the filter module of the smart water meter of the present invention can filter and purify the water source entering the user's home to ensure the user's water safety. When the filter element needs to be flushed, the present invention can forward flush or forward and reverse flush the flushing filter element to ensure the service life and filtering effect of the filter element.

[0046] The control method of the smart water meter of the present invention obtains the degree of dirtiness and blockage of the filter element; when the degree of dirtiness and blockage of the filter element does not require flushing, the filter element is placed in a filtering and water-making state; when the degree of dirtiness and blockage of the filter element requires flushing, the filter element to be flushed is placed in a forward flushing and reverse flushing state or a forward flushing state. The control method of the smart water meter of the present invention can filter and purify the water source entering the user's home to ensure the user's water safety, and at the same time, when the filter element needs to be flushed, the flushing filter element can be flushed forward or forward and reversely to ensure the service life and filtering effect of the filter element.

[0047] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0049] Figure 1 It is a schematic diagram of a smart water meter according to a specific embodiment of the present invention.

[0050] Figure 2 This is a schematic diagram of a smart water meter according to a specific embodiment of the present invention.

[0051] Figure 3 This is a control flow chart of a smart water meter according to a specific embodiment of the present invention.

[0052] Figure 4 It is a schematic diagram of a smart water meter according to a second specific embodiment of the present invention.

[0053] Figure 5 This is a schematic diagram of a smart water meter according to a second specific embodiment of the present invention.

[0054] Figure 6 This is a control flow chart of a smart water meter according to a second specific embodiment of the present invention.

[0055] In the figure,

[0056] 1. Water inlet;

[0057] 2. Water outlet;

[0058] 3. Rinse mouth;

[0059] 4. Water meter module;

[0060] 5. Upstream pressure sensor;

[0061] 6. First filter element;

[0062] 7. The first solenoid valve;

[0063] 67. The first filtering branch;

[0064] 8. First flushing solenoid valve;

[0065] 81. First flushing branch;

[0066] 9. Second filter element;

[0067] 10. Second solenoid valve;

[0068] 910, second filter branch

[0069] 11. Second flushing solenoid valve;

[0070] 111. Second flushing branch;

[0071] 12. Downstream pressure sensor;

[0072] 13. Flow sensor;

[0073] 14. Main road;

[0074] 15 Shell. DETAILED DESCRIPTION

[0075] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0076] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0077] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0078] Smart water meters are mainly used to measure users' water consumption and filter the water entering users. At the same time, they detect the degree of dirtiness and blockage of the filter module and flush it when it is dirty and blocked to ensure the service life and filtering effect of the filter element.

[0079] Among them, the filtration module adopts an ultrafiltration filter element or other filter elements with water quality filtration function.

[0080] The following is a specific description through two embodiments:

[0081] Embodiment 1

[0082] like Figure 1-2 As shown, the smart water meter includes a housing 15, a main pipe 14 located in the housing 15, a water meter module 4, a filter module, a flushing branch, a filter element dirtiness detection module, a storage module and a control module. The following is a detailed description of each component:

[0083] The housing 15 forms the appearance of the smart water meter. A display module may also be provided on the housing 15 to display water consumption information, etc., for the convenience of users to view.

[0084] The main line 14 is located in the housing 15 and is the main way for the external water source to enter the user's water end. The main line 14 includes a water inlet 1 and a water outlet 2, and the water inlet 1 and the water outlet 2 extend out of the housing 15. The water inlet 1 of the main line 14 is connected to the external water source-tap water, and the water outlet 2 of the main line 14 is connected to the user's water pipeline.

[0085] A water meter module 4 and a filter module are sequentially arranged on the main pipe 14 in a direction from the water inlet 1 to the water outlet 2 .

[0086] The water meter module 4 is located on the main pipe 14 and is used to detect and measure the total water flow of the user.

[0087] When the user uses water and does not flush the filter element, the total water flow includes the user's actual water flow; when the user does not use water and does not flush the filter element, the total water flow includes the flushing flow; when the user uses water and flushes the filter element, the total water flow includes the flushing flow and the user's actual water flow.

[0088] The filter module is located on the main line 14 and is used to filter the water in the main line 14. The filter module includes at least two parallel filter branches, and the filter branches are provided with a filter element and a switch. The filter element includes a water inlet, a water outlet and a sewage outlet, and the water outlet is connected to the switch.

[0089] Specifically, this embodiment is described by taking the filtering module including two parallel filtering branches as an example:

[0090] The filter module includes a first filter branch 67 and a second filter branch 910 connected in parallel.

[0091] The first filter branch 67 is provided with a first filter element 6 and a first solenoid valve 7 , and the water outlet of the first filter element 6 is connected to the first solenoid valve 7 .

[0092] The second filter branch 910 is provided with a second filter element 9 and a second solenoid valve 10 , and the water outlet of the second filter element 9 is connected to the second solenoid valve 10 .

[0093] The flushing branch is connected to the sewage outlet of the filter element. Each filter element corresponds to a flushing branch, and a flushing switch is arranged on the flushing branch.

[0094] Specifically, the flushing branch of this embodiment includes a first flushing branch 81 and a second flushing branch 111 .

[0095] The sewage outlet of the first filter element 6 is connected to the first flushing branch 81. The first flushing branch 81 is provided with a first flushing solenoid valve 8, which is used to open or close the first flushing branch 81.

[0096] The sewage outlet of the second filter element 9 is connected to the second flushing branch 111. The second flushing branch 111 is provided with a second flushing solenoid valve 11, which is used to open or close the second flushing branch 111.

[0097] All flushing branches can be connected to the same flushing port 3, and the flushing port 3 is used to discharge sewage.

[0098] The control module is used to obtain the degree of dirtiness and blockage of the filter element and receive the total water consumption and real-time total water flow detected by the water meter module.

[0099] The control module is used to control the smart water meter to be in a filtering and water-making state when the filter element is dirty and clogged to the extent that flushing is not required - Mode 1: at least one switch is controlled to be opened and all flushing switches are controlled to be closed, so that the filter element is in a filtering and water-making state.

[0100] When the filter element needs to be flushed due to the degree of dirtiness and blockage, the control module controls the smart water meter to be in the forward flushing and reverse flushing state of the filter element to be flushed - Mode 2: All switches are controlled to be open, the flushing switch corresponding to the filter element to be flushed is controlled to be open, and other flushing switches are controlled to be closed, so that the filter element to be flushed is in the forward flushing and reverse flushing state: the water from the main line enters the filter element to be flushed through the water inlet of the filter element to be flushed, and forward flushes the filter element to be flushed, and then is discharged from the drain outlet and flushing branch. The water from the main line enters the filter element to be flushed from the water outlet of the filter element to be flushed after passing through other filter branches, and reversely flushes the filter element to be flushed, and then is discharged from the drain outlet and flushing branch.

[0101] Alternatively, when the filter element needs to be flushed due to the degree of dirt and blockage, the control module controls the smart water meter to be in the forward flushing state of the filter element to be flushed - mode three: the flushing switch corresponding to the filter element to be flushed is controlled to open, other flushing switches are controlled to be closed, the switch corresponding to the filter element to be flushed is controlled to be closed, and other switches are controlled to be opened, so that the filter element to be flushed is in the forward flushing state: the water from the main line enters the filter element to be flushed through the water inlet of the filter element to be flushed, forward flushes the filter element to be flushed, and is discharged from the drain outlet and the flushing branch.

[0102] Specifically, the smart water meter includes a pressure detection module for detecting the pressure value downstream of the filter module, and the control module is used to determine that the filter element is dirty and does not need to be flushed when the pressure value detected by the pressure detection module is less than the set threshold corresponding to the total water flow detected by the water meter module at this time; when the pressure value detected by the pressure detection module is greater than or equal to the set threshold corresponding to the total water flow detected by the water meter module at this time, it is determined that the filter element is dirty and needs to be flushed. Since the water pressure of the main pipeline is different when the water flow is different, the pressure value detected by the pressure detection module is also different. Therefore, different set thresholds are used for different total water flow rates. This comparison method can more accurately determine the degree of dirtiness and blockage of the filter element.

[0103] In order to further improve the detection accuracy of the degree of filter element dirtiness and blockage, the pressure detection module includes an upstream pressure sensor 5 located upstream of the filter module and a downstream pressure sensor 12 located downstream of the filter module. The degree of filter element dirtiness and blockage is determined by the pressure difference between the pressures detected by the upstream pressure sensor 5 and the downstream pressure sensor 12.

[0104] When the pressure difference detected by the upstream pressure sensor 5 and the downstream pressure sensor 12 is less than the set threshold corresponding to the total water flow detected by the water meter module at this time, it is judged that the degree of dirtiness of the filter element does not need to be flushed; when the pressure difference detected by the upstream pressure sensor 5 and the downstream pressure sensor 12 is greater than or equal to the set threshold corresponding to the total water flow detected by the water meter module at this time, it is judged that the degree of dirtiness of the filter element needs to be flushed. The set threshold at this time refers to the set threshold of the difference.

[0105] The smart water meter includes a storage module, which is used to store a number of set thresholds corresponding to the total water flow, or the storage module is used to store a set threshold calculation formula corresponding to the total water flow. After obtaining the total water flow, the control module reads the set threshold corresponding to the total water flow in the storage module, or calculates the set threshold according to the set threshold calculation formula stored in the storage module.

[0106] Since the user just needs water during the filter element flushing process, if the user just needs water during the filter element flushing process, the water output from the water outlet will be reduced, reducing the user's water consumption, and the user experience is poor. In order to solve this problem, this embodiment further controls the flushing of the filter element by combining the total water flow detected by the water meter module 4 with the degree of dirtiness and blockage of the filter element. The control module controls the filter element to be flushed to be flushed in turn. Specifically:

[0107] When the filter element is dirty and clogged to the extent that flushing is required and the total water flow rate is within the first set threshold range, the filter element to be flushed is in a forward flushing and reverse flushing state - mode two.

[0108] When the filter element is dirty enough to be flushed and the total water flow rate is within the second set threshold range, the filter element to be flushed is in the forward flushing state - mode three.

[0109] When the filter element is dirty enough to be flushed and the total water flow rate is within the third set threshold range, the filter element is in the filtering and water making state - mode one. When the conditions of mode two or mode three are met, the corresponding flushing is performed.

[0110] The minimum value of the third threshold range is greater than or equal to the maximum value of the second threshold range, and the minimum value of the second threshold range is greater than or equal to the maximum value of the first threshold range. Of course, the first threshold range can be a value of 0.

[0111] When the total water flow rate is large, it means that the user's water consumption is large. At this time, the filter element is controlled to be in a filtering and water-making state to meet the user's large water flow; when the total water flow rate is medium, it means that the user's water consumption is average. At this time, the filter element is controlled to be in a forward flushing state. On the one hand, it can meet the user's water consumption, and on the other hand, it can flush the filter element to improve the filtering effect; when the total water flow rate is small, it means that the user's water consumption is small or no water is used. At this time, the filter element is controlled to be in a forward flushing and reverse flushing state, which can thoroughly clean the filter element and maximize the filtering effect.

[0112] Specifically, when the pressure difference detected by the upstream pressure sensor 5 and the downstream pressure sensor 12 is less than the set threshold value corresponding to the total water flow detected by the water meter module at this time, it operates in mode 1: the first flushing solenoid valve 8 and the second flushing solenoid valve 11 are closed, and the tap water passes through the water meter module 4 and the upstream pressure sensor 5, and then passes through the first filter element 6 and the second filter element 9 at the same time, and then passes through the first solenoid valve 7 and the second solenoid valve 7 respectively, and the filtered water passes through the downstream pressure sensor 12 and the water outlet 2 to enter the user's water use end.

[0113] When the pressure difference detected by the pressure sensor 5 and the pressure sensor 12 is greater than or equal to the set threshold value corresponding to the total water flow detected by the water meter module at this time, and the total water flow rate within a certain period of time is within the first set threshold value range, it operates in mode 2: if the second filter element 9 was flushed last time, then this flushing is performed as follows: the second flushing solenoid valve 11 is closed. The first filter element 6 is flushed forward, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3; the first filter element 6 is flushed reversely, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the second filter element 9, the second solenoid valve 10, the first solenoid valve 7, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3. If the first filter element 6 was flushed last time, the second filter element 9 is flushed this time.

[0114] When the pressure difference detected by the pressure sensor 5 and the pressure sensor 12 is greater than or equal to the set threshold corresponding to the total water flow detected by the water meter module at this time, and the total water flow within a certain period of time is within the second set threshold range, it is operated in mode three: if the second filter element 9 was flushed last time, then this flushing is performed as follows: the first solenoid valve 7 and the second flushing solenoid valve 11 are closed. The first filter element 6 is flushed forward, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3. Normal water discharge, the tap water passes through the water meter module 4, the upstream pressure sensor 5, the second filter element 9, the second solenoid valve 10, the downstream pressure sensor 12 and finally reaches the water outlet 2. If the first filter element 6 was flushed last time, the second filter element 9 is flushed this time.

[0115] When the pressure difference detected by the pressure sensor 5 and the pressure sensor 12 is greater than or equal to the set threshold corresponding to the total water flow detected by the water meter module at this time, and the total water flow within a certain period of time is within the third set threshold range, firstly make water according to mode 1, and when the conditions of mode 2 or mode 3 are met, perform the corresponding flushing.

[0116] The method of flushing the filter element sequentially in this embodiment can meet the normal water use needs of the user and avoid the situation where the user cannot use water during the flushing process.

[0117] This embodiment also proposes a control method for a smart water meter:

[0118] Get the degree of dirtiness and blockage of the filter element;

[0119] When the filter element is dirty and blocked to such an extent that flushing is not required, at least one switch is controlled to be opened and all flushing switches are controlled to be closed, so that the filter element is in a filtering and water-making state;

[0120] When the filter element needs to be flushed due to the degree of dirt and blockage, all switches are controlled to open, the flushing switch corresponding to the filter element to be flushed is controlled to open, and the other flushing switches are controlled to close, so that the filter element to be flushed is in a forward flushing and reverse flushing state: the water from the main line enters the filter element to be flushed through the water inlet of the filter element to be flushed, forward flushes the filter element to be flushed, and is discharged from the sewage outlet and the flushing branch; the water from the main line enters the filter element to be flushed from the water outlet of the filter element to be flushed after passing through other filtering branches, reverse flushes the filter element to be flushed, and is discharged from the sewage outlet and the flushing branch; or, the flushing switch corresponding to the filter element to be flushed is controlled to open, the other flushing switches are controlled to close, the switch corresponding to the filter element to be flushed is controlled to close, and the other switches are controlled to open, so that the filter element to be flushed is in a forward flushing state: the water from the main line enters the filter element to be flushed through the water inlet of the filter element to be flushed, forward flushes the filter element to be flushed, and is discharged from the sewage outlet and the flushing branch.

[0121] Preferably, the filter elements to be flushed are flushed sequentially.

[0122] In order to avoid the impact of the filter element flushing process on the user's water use, when the filter element needs to be flushed due to dirtiness and blockage and the total water flow rate is within the first set threshold range, the filter element to be flushed is controlled to be in the forward flushing and reverse flushing states;

[0123] When the filter element is dirty enough to be flushed and the total water flow rate is within the second set threshold range, the filter element to be flushed is controlled to be in a forward flushing state;

[0124] When the filter element is dirty enough to be flushed and the total water flow rate is within a third set threshold range, the filter element is controlled to be in a filtering and water-making state;

[0125] The minimum value of the third threshold range is greater than or equal to the maximum value of the second threshold range, and the minimum value of the second threshold range is greater than or equal to the maximum value of the first threshold range. Of course, the first threshold range can be a value of 0.

[0126] like Figure 3 As shown, the process of the control method of this embodiment is as follows:

[0127] S1. The smart water meter is turned on and initialized. All switches are in the open state and all flushing switches are in the closed state.

[0128] S2, the water meter module detects the total water flow, and the upstream pressure sensor and the downstream pressure sensor detect the pressure.

[0129] S3. Determine the relationship between the pressure difference detected by the upstream pressure sensor and the downstream pressure sensor and the set threshold corresponding to the total water flow detected by the water meter module at this time. If the pressure difference detected by the upstream pressure sensor and the downstream pressure sensor is less than the set threshold corresponding to the total water flow detected by the water meter module at this time, go to step S4; otherwise, go to step S5.

[0130] S4, Mode 1: The first flushing solenoid valve 8 and the second flushing solenoid valve 11 are closed, and the tap water passes through the water meter module 4 and the upstream pressure sensor 5, and then passes through the first filter element 6 and the second filter element 9 at the same time, and then passes through the first solenoid valve 7 and the second solenoid valve 7 respectively, and the filtered water passes through the downstream pressure sensor 12 and the water outlet 2 to enter the user water use end. Enter step S2.

[0131] S5. Determine whether the total water flow rate is within the first set threshold range. If so, proceed to step S6; otherwise, proceed to step S7.

[0132] S6, Mode 2: If the second filter element 9 was flushed last time, then the flushing is performed as follows this time: the second flushing solenoid valve 11 is closed. The first filter element 6 is flushed forward, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3; the first filter element 6 is flushed reversely, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the second filter element 9, the second solenoid valve 10, the first solenoid valve 7, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3. If the first filter element 6 was flushed last time, the second filter element 9 is flushed this time. Enter step S2.

[0133] S7. Determine whether the total water flow rate is within the second set threshold range. If so, proceed to step S8; otherwise, proceed to step S9.

[0134] S8, Mode 3: If the second filter element 9 was flushed last time, then the flushing is performed as follows this time: the first solenoid valve 7 and the second flushing solenoid valve 11 are closed. The first filter element 6 is flushed forward, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3. Normal water discharge, the tap water passes through the water meter module 4, the upstream pressure sensor 5, the second filter element 9, the second solenoid valve 10, the downstream pressure sensor 12 and finally reaches the water outlet 2. If the first filter element 6 was flushed last time, the second filter element 9 is flushed this time. Enter step S2.

[0135] S9: Whether the total water flow rate is within the third set threshold range, proceed to step S4.

[0136] Embodiment 2

[0137] like Figure 4 , 5 As shown, the difference between this embodiment and the first embodiment is that the smart water meter in this embodiment further includes:

[0138] The flow sensor 13 is located downstream of the filter module on the main pipe and is used to detect the actual water flow.

[0139] In this embodiment, the actual water flow rate detected by the flow sensor 13 is combined with the degree of dirtiness and blockage of the filter element to control the flushing of the filter element, which can more accurately reflect the user's water demand.

[0140] Specifically, when the filter element is dirty and blocked to a certain extent and needs to be flushed and the actual water flow rate is within the first set threshold range, the filter element to be flushed is in a forward flushing and reverse flushing state;

[0141] When the filter element is dirty enough to be flushed and the actual water flow rate is within the second set threshold range, the filter element to be flushed is in a forward flushing state;

[0142] When the filter element is dirty enough to be flushed and the actual water flow rate is within the third set threshold range, the filter element is in a filtering and water-making state;

[0143] The minimum value of the third threshold range is greater than or equal to the maximum value of the second threshold range, and the minimum value of the second threshold range is greater than or equal to the maximum value of the first threshold range. Of course, the first threshold range can be a value of 0.

[0144] Specifically, when the pressure difference detected by the upstream pressure sensor 5 and the downstream pressure sensor 12 is less than the set threshold value corresponding to the total water flow detected by the water meter module at this time, it operates in mode 1: the first flushing solenoid valve 8 and the second flushing solenoid valve 11 are closed, and the tap water passes through the water meter module 4 and the upstream pressure sensor 5, and then passes through the first filter element 6 and the second filter element 9 at the same time, and then passes through the first solenoid valve 7 and the second solenoid valve 7 respectively, and the filtered water passes through the downstream pressure sensor 12 and the water outlet 2 to enter the user's water use end.

[0145] When the pressure difference detected by the pressure sensor 5 and the pressure sensor 12 is greater than or equal to the set threshold value corresponding to the total water flow detected by the water meter module at this time, and the flow sensor 13 detects that the actual water flow is within the first set threshold value within a certain period of time, it operates in mode 2: if the second filter element 9 was flushed last time, then this flushing is performed as follows: the second flushing solenoid valve 11 is closed. The first filter element 6 is flushed forward, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3; the first filter element 6 is flushed reversely, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the second filter element 9, the second solenoid valve 10, the first solenoid valve 7, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3. If the first filter element 6 was flushed last time, the second filter element 9 is flushed this time.

[0146] When the pressure difference detected by the pressure sensor 5 and the pressure sensor 12 is greater than or equal to the set threshold value corresponding to the actual water flow detected by the water meter module at this time, and the flow sensor 13 detects that the actual water flow is within the second set threshold range within a certain period of time, it operates in mode three: If the second filter element 9 was flushed last time, then this flushing is performed as follows: the first solenoid valve 7 and the second flushing solenoid valve 11 are closed. The first filter element 6 is flushed forward, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3. Normal water discharge, the tap water passes through the water meter module 4, the upstream pressure sensor 5, the second filter element 9, the second solenoid valve 10, the downstream pressure sensor 12 and finally reaches the water outlet 2. If the first filter element 6 was flushed last time, the second filter element 9 is flushed this time.

[0147] When the pressure difference detected by the pressure sensor 5 and the pressure sensor 12 is greater than or equal to the set threshold corresponding to the total water flow detected by the water meter module at this time, and the flow sensor 13 detects that the actual water flow is within the third set threshold range within a certain period of time, firstly make water according to mode 1, and when the conditions of mode 2 or mode 3 are met, perform the corresponding flushing.

[0148] This embodiment also proposes a control method for a smart water meter:

[0149] Get the degree of dirtiness and blockage of the filter element;

[0150] A flow sensor located downstream of the filter module on the main pipe detects the actual water flow;

[0151] When the filter element is dirty and blocked to such an extent that flushing is not required, at least one switch is controlled to be opened and all flushing switches are controlled to be closed, so that the filter element is in a filtering and water-making state;

[0152] When the filter element needs to be flushed due to the degree of dirtiness and blockage and the actual water flow rate is within the first set threshold range, the filter element to be flushed is controlled to be in a forward flushing and reverse flushing state;

[0153] When the filter element is dirty enough to be flushed and the actual water flow rate is within the second set threshold range, the filter element to be flushed is controlled to be in a forward flushing state;

[0154] When the filter element is dirty enough to be flushed and the actual water flow rate is within the third set threshold range, the filter element is controlled to be in a filtering and water-making state;

[0155] The minimum value of the third threshold range is greater than or equal to the maximum value of the second threshold range, and the minimum value of the second threshold range is greater than or equal to the maximum value of the first threshold range. Of course, the first threshold range can be a value of 0.

[0156] Preferably, the filter elements to be flushed are flushed sequentially.

[0157] like Figure 6 As shown, the process of the control method of this embodiment is as follows:

[0158] S1. The smart water meter is turned on and initialized. All switches are in the open state and all flushing switches are in the closed state.

[0159] S2, the water meter module detects the total water flow, the upstream pressure sensor and the downstream pressure sensor detect the pressure, and the water flow sensor detects the actual water flow.

[0160] S3. Determine the relationship between the pressure difference detected by the upstream pressure sensor and the downstream pressure sensor and the set threshold corresponding to the total water flow detected by the water meter module at this time. If the pressure difference detected by the upstream pressure sensor and the downstream pressure sensor is less than the set threshold corresponding to the total water flow detected by the water meter module at this time, go to step S4; otherwise, go to step S5.

[0161] S4, Mode 1: The first flushing solenoid valve 8 and the second flushing solenoid valve 11 are closed, and the tap water passes through the water meter module 4 and the upstream pressure sensor 5, and then passes through the first filter element 6 and the second filter element 9 at the same time, and then passes through the first solenoid valve 7 and the second solenoid valve 7 respectively, and the filtered water passes through the downstream pressure sensor 12 and the water outlet 2 to enter the user water use end. Enter step S2.

[0162] S5. Determine whether the actual water flow rate is within the first set threshold range. If so, proceed to step S6; otherwise, proceed to step S7.

[0163] S6, Mode 2: If the second filter element 9 was flushed last time, then the flushing is performed as follows this time: the second flushing solenoid valve 11 is closed. The first filter element 6 is flushed forward, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3; the first filter element 6 is flushed reversely, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the second filter element 9, the second solenoid valve 10, the first solenoid valve 7, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3. If the first filter element 6 was flushed last time, the second filter element 9 is flushed this time. Enter step S2.

[0164] S7. Determine whether the actual water flow rate is within the second set threshold range. If so, proceed to step S8; otherwise, proceed to step S9.

[0165] S8, Mode 3: If the second filter element 9 was flushed last time, then the flushing is performed as follows this time: the first solenoid valve 7 and the second flushing solenoid valve 11 are closed. The first filter element 6 is flushed forward, and the tap water passes through the water meter module 4, the upstream pressure sensor 5, the first filter element 6, the first flushing solenoid valve 8 and finally reaches the flushing port 3. Normal water discharge, the tap water passes through the water meter module 4, the upstream pressure sensor 5, the second filter element 9, the second solenoid valve 10, the downstream pressure sensor 12 and finally reaches the water outlet 2. If the first filter element 6 was flushed last time, the second filter element 9 is flushed this time. Enter step S2.

[0166] S9: Whether the actual water flow rate is within the third set threshold range, proceed to step S4.

[0167] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. An intelligent water meter with water cleaning and automatic flushing, comprising: case; A main pipeline is located in the shell; A water meter module, located on the main pipe; Characterized in that the smart water meter also includes: A filter module, located on the main pipe and used for filtering water in the main pipe, the filter module comprises at least two parallel filter branches, the filter branches are provided with a filter element and a switch, the filter element comprises a water inlet, a water outlet and a sewage outlet, the water outlet is connected to the switch; A flushing branch connected to the sewage outlet of the filter element, each filter element corresponds to a flushing branch, and a flushing switch is provided on the flushing branch; A control module is used to obtain the degree of dirtiness and blockage of the filter element; the control module is used to control the smart water meter to be in a filtering and water-making state when the degree of dirtiness and blockage of the filter element does not require flushing: at least one switch is turned on and all flushing switches are turned off; the control module is used to control the smart water meter to be in a forward flushing and reverse flushing state of the filter element to be flushed when the degree of dirtiness and blockage of the filter element requires flushing: all switches are turned on, the flushing switch corresponding to the filter element to be flushed is turned on, and other flushing switches are turned off, or the smart water meter is controlled to be in a forward flushing state of the filter element to be flushed: the flushing switch corresponding to the filter element to be flushed is turned on, other flushing switches are turned off, the switch corresponding to the filter element to be flushed is turned off, and other switches are turned on; The control module is used to control the smart water meter to be in a forward flushing and reverse flushing state of the filter element to be flushed when the filter element needs to be flushed due to dirtiness and blockage and the total water flow rate detected by the water meter module is within a first set threshold range; When the filter element is dirty to the extent that flushing is required and the total water flow rate is within a second set threshold range, controlling the smart water meter to be in a forward flushing state of the filter element to be flushed; When the filter element is dirty enough to be flushed and the total water flow rate is within a third set threshold range, controlling the smart water meter to be in a filtering and water-making state; The minimum value of the third set threshold range is greater than or equal to the maximum value of the second set threshold range, and the minimum value of the second set threshold range is greater than or equal to the maximum value of the first set threshold range.

2. The smart water meter according to claim 1, characterized in that: The smart water meter includes a pressure detection module for detecting the pressure value downstream of the filter module, and the control module is used to determine that the degree of dirtiness of the filter element does not need to be flushed when the pressure value detected by the pressure detection module is less than the set threshold value corresponding to the total water flow detected by the water meter module at this time; and is also used to determine that the degree of dirtiness of the filter element needs to be flushed when the pressure value detected by the pressure detection module is greater than or equal to the set threshold value corresponding to the total water flow detected by the water meter module at this time; Alternatively, the smart water meter includes an upstream pressure sensor located upstream of the filter module and a downstream pressure sensor located downstream of the filter module; the control module is used to judge that the filter element is dirty enough and does not need to be flushed when the pressure difference detected by the upstream pressure sensor and the downstream pressure sensor is less than a set threshold value corresponding to the total water flow detected by the water meter module at this time; and is also used to judge that the filter element is dirty enough and needs to be flushed when the pressure difference detected by the upstream pressure sensor and the downstream pressure sensor is greater than or equal to the set threshold value corresponding to the total water flow detected by the water meter module at this time.

3. The smart water meter according to claim 2, characterized in that: The smart water meter includes a storage module for storing a number of set thresholds corresponding to the total water flow rate, or for storing a calculation formula for the set threshold corresponding to the total water flow rate.

4. The smart water meter according to claim 1, characterized in that: The control module is used to control the filter elements to be flushed to be flushed in sequence.

5. The smart water meter according to any one of claims 1 to 4, characterized in that: The smart water meter also includes: A flow sensor, located downstream of the filter module on the main pipe, for detecting actual water flow; The control module is used to control the smart water meter to be in a forward flushing and reverse flushing state of the filter element to be flushed when the filter element needs to be flushed due to dirtiness and blockage and the actual water flow rate is within a first set threshold range; When the filter element is dirty to the extent that flushing is required and the actual water flow rate is within a second set threshold range, controlling the smart water meter to be in a forward flushing state of the filter element to be flushed; When the filter element is dirty enough to be flushed and the actual water flow rate is within a third set threshold range, the smart water meter is in a filtering water production state; The minimum value of the third set threshold range is greater than or equal to the maximum value of the second set threshold range, and the minimum value of the second set threshold range is greater than or equal to the maximum value of the first set threshold range.

6. A control method for a smart water meter, the smart water meter comprising a housing, a main pipe located in the housing, a water meter module located on the main pipe, a filter module and a flushing branch, the filter module comprising at least two parallel filter branches, a filter element and a switch are arranged on the filter branch, the filter element comprises a water inlet, a water outlet and a sewage outlet, the water outlet is connected to the switch, the flushing branch is connected to the sewage outlet of the filter element, each filter element corresponds to a flushing branch, and a flushing switch is arranged on the flushing branch, characterized in that: The control method is: Obtaining the degree of dirtiness and blockage of the filter element; When the filter element is dirty and blocked to such an extent that flushing is not required, the smart water meter is controlled to be in a filtering and water-making state: at least one switch is turned on and all flushing switches are turned off; When the filter element needs to be flushed due to the degree of dirtiness and blockage, the smart water meter is controlled to be in a forward flushing and reverse flushing state of the filter element to be flushed: all switches are turned on, the flushing switch corresponding to the filter element to be flushed is turned on, and other flushing switches are turned off; Alternatively, the smart water meter is controlled to be in a forward flushing state of the filter element to be flushed: the flushing switch corresponding to the filter element to be flushed is turned on, other flushing switches are turned off, the switch corresponding to the filter element to be flushed is turned off, and other switches are turned on; When the filter element needs to be flushed due to the dirtiness and blockage and the total water flow rate detected by the water meter module is within a first set threshold range, the smart water meter is controlled to be in a forward flushing and reverse flushing state of the filter element to be flushed; When the filter element is dirty to the extent that flushing is required and the total water flow rate is within a second set threshold range, controlling the smart water meter to be in a forward flushing state of the filter element to be flushed; When the filter element is dirty enough to be flushed and the total water flow rate is within a third set threshold range, controlling the smart water meter to be in a filtering and water-making state; The minimum value of the third set threshold range is greater than or equal to the maximum value of the second set threshold range, and the minimum value of the second set threshold range is greater than or equal to the maximum value of the first set threshold range.

7. The control method of the smart water meter according to claim 6, characterized in that: The filter elements to be flushed are flushed in sequence.

8. The control method of the smart water meter according to claim 6 or 7, characterized in that: The smart water meter includes a flow sensor located downstream of the filter module on the main pipe, and the control method further includes: The flow sensor detects the actual water flow; When the filter element is dirty and clogged to a degree that flushing is required and the actual water flow rate is within a first set threshold range, the smart water meter is controlled to be in a forward flushing and reverse flushing state of the filter element to be flushed; When the filter element is dirty to the extent that flushing is required and the actual water flow rate is within a second set threshold range, controlling the smart water meter to be in a forward flushing state of the filter element to be flushed; When the filter element is dirty enough to be flushed and the actual water flow rate is within a third set threshold range, controlling the smart water meter to be in a filtering and water-making state; The minimum value of the third set threshold range is greater than or equal to the maximum value of the second set threshold range, and the minimum value of the second set threshold range is greater than or equal to the maximum value of the first set threshold range.

Images