Filter element detection method and water heater

Abstract

This invention discloses a filter cartridge testing method and a water heater. The filter cartridge testing method includes the following steps: S1: Appliance standby; S2: Determine if there is a water flow signal. If yes, proceed to S3; otherwise, return to S1; S3: Determine if the appliance is installing a filter cartridge for the first time. If yes, detect the water flow and proceed to S4; otherwise, proceed to S6; S4: Determine if L... 累计 >L 设1 If so, then detect the actual concentration C of the filter media in the filter element. 实 Then proceed to S5; S5: Determine if C 实 >C 设 If not, a filter replacement signal will be sent, L 累计 Automatic reset, appliance enters standby mode; S6: Check if there is a water flow signal, if so, check water flow and proceed to S7; S7: Check if L 累计 >L 设2 If so, then detect the actual concentration C of the filter media in the filter element. 实 Then proceed to S8; otherwise, return to S6. S8: Determine if C is correct. 实 >C 设 If not, a signal will be sent indicating that the filter element was not successfully replaced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a filter element detection method and a water heater. BACKGROUND

[0002] Limescale treatment has always been a difficult point in household appliances, and limescale accumulation will directly affect the service life of the appliance and accelerate the corrosion of the water pipe. The limescale treatment method mainly has descaling and scale inhibition. Descaling is to remove limescale by using alkali washing or acid washing when the limescale accumulates to a certain extent, but descaling has a lag and the chemical reaction time of alkali washing is long, and acid washing may corrode metal, so generally the scale inhibition method (i.e. preventing the combination of calcium and magnesium ions with carbonate ions) is adopted. At present, the scale inhibition methods include electromagnetic scale prevention, metal particle electronic treatment, electrostatic adsorption, ion exchange, scale inhibitor, etc. The commonly seen methods in the market are ion exchange and scale inhibitor, and other scale inhibition methods are less used at present due to reasons such as scale inhibition effect. However, ion exchange requires high cost and large equipment size, so the scale inhibitor is more widely used. The scale inhibitor is a kind of chemical slow-release agent, which can prevent the formation of calcium carbonate and calcium sulfate to a certain extent due to chelation and dispersion, and a small amount of scale inhibitor can treat a large amount of water, and has high practicability.

[0003] Part of the appliance, especially the gas water heater, sets the scale inhibitor as a filter element, combines the function of filtering impurities in water, and is applied to the water inlet end as an integrated filter, which has high scale inhibition efficiency and can treat a large amount of water. When the filter element treats water to reach the designed value, the scale inhibitor is consumed and needs to be replaced with a new filter element. At present, the gas water heater will prompt before replacing the filter element, and the water amount will be reset after replacing the filter element. At this time, the gas water heater no longer prompts and defaults that the user has replaced the filter element, and the system reenters the detection program of the filter element. This method may have the problem that the user has not successfully replaced the filter element (including not replacing the filter element or not replacing the new filter element), and as long as the user performs the action of resetting the water amount, it is considered that the replacement of the filter element is successful. If the user has not successfully replaced the filter element, but the system judges that the user has successfully replaced the filter element, it will cause the problem that the limescale increases and the service life of the parts is shortened.

[0004] Therefore, there is an urgent need for a filter element detection method to solve the above problems. SUMMARY

[0005] The present application aims to at least solve one of the problems existing in the prior art to a certain extent. To this end, the present application provides a filter element detection method, which can quickly judge whether the user has successfully replaced the filter element. If the replacement of the filter element is not successful, a prompt of unsuccessful replacement of the filter element is given, so as to avoid the problem that the user does not replace the filter element and then enters a new cycle of judgment of the consumption of the filter element again, causing a long period of unfiltered water to continuously flow out of the appliance.

[0006] The above-mentioned purpose is achieved by the following technical solutions:

[0007] A filter element detection method, comprising the following steps:

[0008] S1: standby of the electric appliance;

[0009] S2: judging whether there is a water flow signal, if yes, entering S3, if no, returning to S1;

[0010] S3: judging whether the electric appliance is installed with the filter element for the first time, if yes, detecting the water flow and entering S4, if no, entering S6;

[0011] S4: judging whether L 累计 >L 设1 , if yes, detecting the actual concentration C 实 of the filter material of the filter element and entering S5, if no, returning to S2;

[0012] S5: judging whether C 实 >C 设 , if no, issuing a signal of replacing the filter element, L 累计 automatic zero, the electric appliance entering the standby state;

[0013] S6: judging whether there is a water flow signal, if yes, detecting the water flow and entering S7, if no, returning to S1;

[0014] S7: judging whether L 累计 >L 设2 , if yes, detecting the actual concentration C 实 of the filter material of the filter element and entering S8, if no, returning to S6;

[0015] S8: judging whether C 实 >C 设 , if yes, returning to S2, if no, entering S9;

[0016] S9: issuing a signal of the filter element not being replaced successfully;

[0017] Wherein, L 累计 is the cumulative water flow, L 设1 is the first preset water flow; L 设2 is the second preset water flow, C 设 is the preset concentration, L 设1 >L 设2 .

[0018] Optionally, in S5, if C 实 >C 设 , the following steps are entered:

[0019] S51: judging whether there is a water flow signal, if yes, entering S52, if no, returning to S1;

[0020] S52: judging whether the electrical appliance enters the standby state, if yes, returning to S5, if no, repeating S52.

[0021] Optionally, after sending the filter element replacement unsuccessful signal in S9, the following steps are entered:

[0022] S91: L 累计 After automatic zeroing, returning to S1.

[0023] Optionally, after sending the filter element replacement unsuccessful signal in S9, the following steps are entered:

[0024] S92: judging whether the L 累计 is manually zeroed, if yes, returning to S1, if no, returning to S9 and prompting the user to manually zero the L 累计 after replacing the filter element.

[0025] Optionally, 100t≤L 设1 ≤150t, 2kg≤L 设2 ≤3kg.

[0026] Optionally, L 设1 =12t, L 设2 =2.5kg.

[0027] Optionally, the actual concentration C 实 of the filter material is detected by an electrochemical sensor.

[0028] In still another aspect, the application provides a water heater comprising a filter element and an electrochemical sensor arranged in the filter element, wherein the filter element is detected by the filter element detection method described above.

[0029] Compared with the prior art, the application has at least the following beneficial effects:

[0030] The filter element detection method provided by the application sets L 设1 and L 设2 , L 设1 >L 设2 . Thus, after the electrical appliance is first installed with a filter element and the filter material in the filter element is consumed, it can be quickly judged whether the user successfully replaces the filter element. If the filter element is not successfully replaced, a prompt of filter element replacement unsuccessful is sent, so as to avoid the situation that the user does not replace the filter element and then enters a new cycle of filter element consumption judgment (the new cycle of filter element consumption judgment needs to reach L 累计 >L 设1 to be performed, and in this process, if the filter element is not successfully replaced, it means that the user needs to use L 设1the filter element is replaced), thus, the filter element detection method provided by the present application can reduce the operation failure rate of the user when replacing the filter element, can avoid the electric appliance from continuing to run in the case that the filter element is invalid, can avoid the user from being forced to use a long period of unfiltered water, and can avoid the scale accumulated in the electric appliance, thereby ensuring the service life of the electric appliance. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a step diagram of the filter element detection method provided by the embodiment of the present application. DETAILED DESCRIPTION

[0032] The following embodiments are used to illustrate the present application, but the present application is not limited to these embodiments. The specific embodiments of the present application are modified or equivalent replacements are made to some technical features without departing from the spirit of the present application, and all of them should be covered in the technical solution range claimed by the present application.

[0033] Please refer to Figure 1 , the present application provides a filter element detection method, comprising the following steps:

[0034] S1: standby of the electric appliance (the filter element is arranged in the electric appliance, and the electric appliance can be a water heater, a water purifier or a dishwasher, etc.);

[0035] S2: determining whether there is a water flow signal, if yes, entering S3, if no, returning to S1;

[0036] S3: determining whether the electric appliance is installed with the filter element for the first time, if yes, detecting the water flow and entering S4, if no, entering S6;

[0037] S4: determining whether L 累计 >L 设1 , if yes, detecting the actual concentration C 实 of the filter material of the filter element and entering S5, if no, returning to S2;

[0038] S5: determining whether C 实 >C 设 , if no, issuing a filter element replacement signal, L 累计 automatic zero, and the electric appliance enters the standby state;

[0039] S6: determining whether there is a water flow signal, if yes, detecting the water flow and entering S7, if no, returning to S1;

[0040] S7: determining whether L 累计 >L 设2 , if yes, detecting the actual concentration C 实 of the filter material of the filter element and entering S8, if no, returning to S6;

[0041] S8: judging whether C 实 >C 设 , if yes, returning to S2, and if no, entering S9;

[0042] S9: issuing a filter core non-replacement success signal;

[0043] wherein L 累计 is an accumulated water flow, L 设1 is a first preset water flow; L 设2 is a second preset water flow, C 设 is a preset concentration, L 设1 >L 设2 .

[0044] The filter core detection method provided by the application sets L 设1 and L 设2 , L 设1 >L 设2 . Thus, after the filter core is installed for the first time and the filter material in the filter core is consumed, it is quickly judged whether the filter core is successfully replaced by the user, and if the filter core is not successfully replaced, a prompt of non-successful replacement of the filter core is issued, so as to avoid the situation that the user does not replace the filter core and then enters a new cycle of judgment of filter core consumption (the new cycle of judgment of filter core consumption needs to reach L 累计 >L 设1 to be performed, and in this process, if the filter core is not successfully replaced, it means that the user needs to use L 设1 of unfiltered water, and then the electrical appliance can issue a prompt of replacement of the filter core again), so that the filter core detection method provided by the application can reduce the operation error rate of the user when replacing the filter core, and can also avoid the situation that the electrical appliance continues to run in the case of invalid filter core and the user is forced to use a long period of unfiltered water.

[0045] Optionally, in S5, if C 实 >C 设 , the following steps are entered:

[0046] S51: judging whether there is a water flow signal, if yes, entering S52, and if no, returning to S1;

[0047] S52: judging whether the electrical appliance enters a standby state, if yes, returning to S5, and if no, repeatedly performing S52.

[0048] That is, when C 实 >C 设 , the electrical appliance performs detection of the filter material concentration C 实 after one operation, which is static detection, and the detection accuracy is higher than that of real-time detection, so as to improve the accuracy of the detection result.

[0049] Optionally, in some embodiments, after the filter core non-replacement success signal is sent in S9, the following step is entered:

[0050] S91: L 累计 After the automatic zeroing, S1 is returned to. The C 实 detection and judgment are performed when the next operation of the electrical appliance is performed.

[0051] Optionally, in the embodiment, after the filter core non-replacement success signal is sent in S9, the following step is entered:

[0052] S92: L 累计 is manually zeroed, S1 is returned to, and the C 累计 detection and judgment are performed when the next operation of the electrical appliance is performed. 累计 is manually zeroed, it is indicated that the user has operated the electrical appliance, and the filter core is possibly replaced. At this time, S1 is returned to, and the C 实 detection and judgment are performed when the next operation of the electrical appliance is performed (the operation can avoid that the user installs the old filter core into the electrical appliance as the new filter core). When L 累计 is not manually zeroed, it is indicated that the user has not operated the electrical appliance, and the filter core is possibly not replaced. At this time, S9 is returned to, the filter core non-replacement success signal is continuously sent, and the user is prompted to manually zero L 累计 after the filter core is replaced. Until the user manually zeros L 累计 , the judgment efficiency of the filter core replacement is improved.

[0053] Optionally, in the embodiment, the electrical appliance is a gas water heater. In the filter core of the gas water heater, the filter core can filter at least 100 t of water, and the new filter core can fully release the filter material to filter the water flow when the water flow reaches 2 kg or more. At this time, whether the new filter core is replaced can be judged. Therefore, 100 t≤L 设1 ≤150 t and 2 kg≤L 设2 ≤3 kg are set, and the detection requirement of the ordinary filter core can be met.

[0054] Optionally, in the embodiment, L 设1 = 12 t and L 设2 = 2.5 kg.

[0055] Optionally, the actual concentration C 实 of the filter material is detected by the electrochemical sensor, the structure is simple, and the electrochemical sensor can be directly installed in the filter core to perform the detection.

[0056] In still another aspect, the application provides a water heater, which comprises a filter core and an electrochemical sensor arranged in the filter core, and the filter core is detected by the filter core detection method.

[0057] The above merely describes some embodiments of the present application. For those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A method for testing filter cartridges, characterized in that, Includes the following steps: S1: Electrical standby mode; S2: Determine if there is a water flow signal. If yes, proceed to S3; otherwise, return to S1. S3: Determine if the appliance is installing a filter for the first time. If yes, check the water flow and proceed to S4. If no, proceed to S6. S4: Determine if L 累计 >L 设1 If so, then detect the actual concentration C of the filter media in the filter element. 实 If not, proceed to S5; otherwise, return to S2. S5: Determine if C 实 >C 设 If not, a filter replacement signal will be sent, L 累计 Automatic reset, the appliance enters standby mode; S6: Determine if there is a water flow signal. If yes, detect the water flow rate and proceed to S7. If no, return to S1. S7: Determine if L 累计 >L 设2 If so, then detect the actual concentration C of the filter media in the filter element. 实 If not, proceed to S8; otherwise, return to S6. S8: Determine if C 实 >C 设 If yes, return to S2; otherwise, proceed to S9. S9: Signal indicating that filter replacement was unsuccessful; Where: L 累计 To calculate the cumulative water flow, L 设1 The first preset water flow rate; L 设2 For the second preset water flow rate, C 设 For the preset concentration, L 设1 >L 设2 .

2. The filter element testing method according to claim 1, characterized in that, In S5, if C 实 >C 设 Then proceed to the following steps: S51: Determine if there is a water flow signal. If yes, proceed to S52; otherwise, return to S1. S52: Determine whether the appliance has entered standby mode. If yes, return to S5; otherwise, repeat S52.

3. The filter element testing method according to claim 1, characterized in that, In S9, after receiving a signal that the filter replacement was unsuccessful, the following steps are taken: S91:L 累计 After automatic clearing, return to S1.

4. The filter element testing method according to claim 1, characterized in that, In S9, after receiving a signal that the filter replacement was unsuccessful, the following steps are taken: S92: Determine L 累计 Manual reset? If yes, return to S1; otherwise, return to S9 and prompt the user to reset L after replacing the filter. 累计 Perform a manual reset.

5. The filter element testing method according to any one of claims 1-4, characterized in that, 100t≤L 设1 ≤150t,2kg≤L 设2 ≤3kg。 6. The filter element testing method according to claim 5, characterized in that, L 设1 =120t,L 设2 =2.5kg。 7. The filter element testing method according to any one of claims 1-4, characterized in that, The actual concentration C of the filter media 实 Detection is performed using an electrochemical sensor.

8. A water heater, characterized in that, The filter element includes a filter cartridge and an electrochemical sensor disposed within the filter cartridge, wherein the filter cartridge is tested using the filter cartridge detection method according to any one of claims 1-7.

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