CN215305648U - Water tank and equipment comprising same - Google Patents
Water tank and equipment comprising same Download PDFInfo
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- CN215305648U CN215305648U CN202120142841.1U CN202120142841U CN215305648U CN 215305648 U CN215305648 U CN 215305648U CN 202120142841 U CN202120142841 U CN 202120142841U CN 215305648 U CN215305648 U CN 215305648U
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Abstract
The utility model relates to a water tank capable of being used for scale detection and equipment comprising the water tank. The water tank judges the scaling condition in the water outlet pipeline by detecting the water flow change in unit time after the water pipeline is used for a period of time, and further judges the scaling condition in the water tank.
Description
Technical Field
The utility model relates to the technical field of scale detection, in particular to a water tank capable of performing scale detection and equipment comprising the water tank.
Background
Water used in daily life and industrial production is usually tap water containing mineral substances, scale is easily formed on the surface of equipment or a pipeline in the long-term operation process of the equipment, and the scale is accumulated to a certain degree to cause faults, such as burning out of a heating pipe, reduction of heating efficiency, blockage of a water level switch, blockage of a pipeline and the like, so that the normal operation of the equipment is influenced. How to accurately detect the amount of the scale and eliminate potential safety hazards caused by the scale is a problem which is always eagerly solved in the field.
In practice, various technical schemes for detecting scale are proposed, for example, CN2017104855958, CN2020103131611, CN2019114079045, CN2014103458295, CN2018110030586 and the like propose a method for judging the amount of scale according to factors such as temperature and energy consumption change of a heating body, a heated cavity and the like in a heating stage, and the method is widely applied in practice, but in some special places, the volume of a water tank is changed due to the amount of scale, and meanwhile, the heating efficiency is influenced by a plurality of factors, so that the method cannot accurately measure the amount of scale;
CN2019107458422 proposes a method for judging the amount of scale according to the relationship between the amount of water, temperature change, heating time and the like, which increases water amount detection compared with the foregoing scheme, but the application scenario is greatly limited, and the method is only applicable to the situation that the water tank is emptied in advance and cannot measure in real time in a working state;
CN2017114795192 proposes a method for judging scale acceleration by measuring water hardness, but in practical application, there are many factors affecting scale deposition, and hardness is only one factor affecting scale deposition, for example, the frequency of use of a dishwasher is diversified, and the factor affecting scale deposition is not only water hardness, so that the actual condition of scale deposition cannot be accurately measured by only considering water hardness;
CN2018111446921, CN2014200205473, CN2018103822025 and the like propose methods for detecting the amount of scale in an optical and infrared manner, which put special requirements on the structural design of equipment, and the equipment has complex structure and high cost and is only suitable for some special scenes;
CN201720082610X proposes a method for detecting the amount of scale on the basis of physical deposition, which is only suitable for the situation where a large amount of scale is accumulated at the bottom of the container, and is beyond the normal working range of the common equipment such as dish washer, etc., and the practicability is poor.
In summary, although various methods and apparatuses for detecting scale have been proposed in practice, in summary, there are general technical problems of poor measurement accuracy, single application scenario, complex apparatus structure, poor practicability and adaptability, and the like, and there is still much room for improvement in scale detection technology. Taking a dishwasher as an example, because a rinsing water tank is closed, a mature scale detection method and scale detection equipment are not available, the accumulated amount of scale cannot be accurately measured, and even if periodic manual inspection and descaling are adopted every month, the problem that part of equipment with heavy scale frequently breaks down cannot be solved.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems occurring in the prior art, and an object of the present invention is to provide a water tank capable of performing scale detection and an apparatus including the same. The water tank is simple in structure and application conditions, can be suitable for different application scenes, including various application scenes without a heating function, with a heating function, diversified equipment use frequency and the like, and has wide application prospect.
The technical scheme provided by the utility model is as follows:
a water tank is characterized in that a flow measuring device is arranged on a water outlet pipeline or a water inlet pipeline of the water tank.
Preferably, when setting up flow measuring device on the water inlet pipe of water tank, still be provided with water level switch in the water tank, water level switch is used for adjusting the actual water level in the water tank and is in standard water level, and when actual water level in the water tank was less than standard water level, through the inlet tube to the water tank moisturizing, when the water level reached standard water level, stopped the moisturizing.
Preferably, a water pumping device is arranged on the water outlet pipeline of the water tank, and the water outlet pipeline is controlled by the water pumping device to discharge water from the water tank.
The water tank provided by the utility model can be used for scale detection, and the basic principle of scale detection is as follows: in the long-term use process of the water tank, the inside of the water tank and the inside of the water outlet pipeline thereof can generate scale, the scale conditions are basically the same, and the scale conditions in the water tank can be reflected by detecting the scale conditions in the water outlet pipeline. After the water tank operates for a period of time, the inner diameter of the water outlet pipeline is reduced due to scale deposition, and the water flow in unit time is correspondingly reduced, so that after the water tank is used for a period of time, the scale deposition condition in the water outlet pipeline can be judged by detecting the water flow change in unit time of the water outlet pipeline, and then the scale deposition condition in the water tank is judged.
The method for detecting the scale in the water tank provided by the utility model comprises the following steps:
when the water tank is in a working state S1, measuring the water flow rate Q1 of the water outlet pipeline of the water tank in unit time;
when the water tank is in a working state S2, measuring the water flow rate Q2 of the water outlet pipeline of the water tank in unit time;
in the same way, when the water tank is in a working state Sn, measuring the water flow Qn (n is a natural number) of the water outlet pipeline of the water tank in unit time;
the scale metric Pn at the operating state Sn is calculated based on the following formula based on the operating state S1 of the water tank,
Pn＝1-Qn/Q1；
and judging the scale deposition condition of the water tank according to the Pn value.
The "working state" of the present invention refers to the state of fouling of the water tank after a period of use. The unit time can be in the unit of hour, minute, second and the like, and is determined according to the actual situation.
When the no-scale state of the tank and its pipes is taken as the operating state S1, Pn reflects the absolute scale measure at the operating state Sn.
When the flow measuring device is arranged on the water outlet pipeline of the water tank, the method for measuring the water flow Qn of the water outlet pipeline of the water tank in unit time comprises the following steps: recording an initial reading Wn1 of the flow measuring device in the Sn state, recording a reading Wn2 of the flow measuring device after water flows in the water outlet pipeline for a period of time tn, and then recording the water flow Qn of the water outlet pipeline of the water tank in the Sn state per unit time as (Wn2-Wn 1)/tn;
when setting up flow measuring device on the water inlet pipe of water tank, still be provided with water level switch in the water tank, water level switch is used for adjusting the actual water level in the water tank and is in standard water level, and when the actual water level in the water tank is less than standard water level, through the inlet tube to the water tank moisturizing, when the water level reaches standard water level, stop the moisturizing. The method for measuring the water flow per unit time Qn of the water outlet pipeline of the water tank comprises the following steps: when the water tank is in a working state Sn, firstly, the actual water level in the water tank is adjusted to a standard water level through a water level switch, an initial reading Wn1 of a flow measuring device on a water inlet pipeline is recorded, then, water is drained outwards through a water outlet pipeline of the water tank for a period of time tn, the water is stopped to be drained, water is supplied to the water tank through the water inlet pipeline controlled by the water level switch to reach the standard water level, and a reading Wn2 of the flow measuring device is recorded, so that the water flow Qn of the water outlet pipeline of the water tank in the Sn state in unit time is (Wn2-Wn 1)/tn;
preferably, in order to avoid working errors caused by mechanical characteristics of equipment, a water inlet pipeline, a water outlet pipeline, a flow measuring device and the like, Qn can be determined by a method of measuring and averaging for multiple times;
the 'judging the scale deposition condition of the water tank according to the Pn value' comprises the steps of predicting the change trend of the scale amount along with the time through an algorithm according to the working states S1, S2 and … …, the generation time of Sn and the corresponding relations of P1, P2, … … and Pn, and judging the time when the scale amount reaches a threshold TS1 so as to arrange the staff to inspect according to the requirements according to the actual working conditions. The method improves the fault diagnosis capability of the detection method, and can realize the door-to-door inspection as required and timely door-to-door inspection of stores with serious water scale; the system can be used for inspecting shops with light water scale in a more reasonable long period.
The algorithm is conventional in the art and includes, but is not limited to, linear regression, exponential regression, time series analysis, and the like.
The threshold TS1 is determined comprehensively according to the specific conditions of the water tank by combining factors such as fault occurrence probability, expert experience and service standards.
The 'judging the scale state of the water tank according to the Pn value' further comprises the steps of calculating the abnormal proportion of the water discharge amount of the water outlet pipeline of the water tank in unit time by an abnormal detection method according to the working states S1, S2 and … …, the occurrence time of Sn and the corresponding relations of P1, P2, … … and Pn, and judging that the water level switch is in fault when the abnormal proportion exceeds a threshold TS 2. The method can automatically identify the running condition of the water tank component, identify the fault occurrence probability of the water level switch in a certain period of time, and improve the automation degree of the water tank.
The anomaly detection method comprises but is not limited to numerical value judgment, Gaussian distribution quantiles, a box line graph method, DBSCAN, isolated forests and the like.
The threshold TS2 is determined comprehensively according to the anomaly detection method adopted, in combination with factors such as the probability of occurrence of a fault, expert experience, service standards, and the like.
Preferably, the water tank is further provided with a cloud communication device, and fault diagnosis capability in large-scale equipment operation is improved by means of cloud multi-equipment data analysis and comparison. The cloud communication device and the means for analyzing and comparing data by means of the cloud are not particularly limited, and the cloud communication device, the communication method and the analysis and comparison method which are commonly used in the prior art can be adopted.
Correspondingly, the utility model provides equipment comprising the water tank. Preferably, the device is a dishwasher.
The utility model has the technical effects that:
1. according to the water tank provided by the utility model, the flow measuring device is arranged on the water outlet pipeline or the water inlet pipeline of the water tank, the water flow is taken as an index, the water tank can be used for detecting water scales, the application condition is simple, the expandability of the technical scheme is good, the application range is expanded, and the water scales can be detected under the scenes of different water qualities, different use frequencies and the like.
2. The detection method executed by the water tank can predict the trend that the scale amount in the water tank changes along with time, improve the fault diagnosis capability of the detection method, realize door-to-door according to requirements and timely patrol and examine a store with serious scale; the system can be used for inspecting shops with light water scale in a more reasonable long period. According to the water quality difference of different areas, the inspection period can be averagely prolonged by 5-10 times, and the operation cost of large-scale equipment is obviously saved.
3. The detection method executed by the water tank provided by the utility model can automatically identify the running condition of the water tank component, improve the automation degree of the water tank, identify the fault occurrence probability of the water level switch in a certain period and automatically judge the fault of the water level switch.
Drawings
FIG. 1 is a schematic view of a water tank according to an embodiment of the present invention
FIG. 2 is a schematic view of a water tank according to another embodiment of the present invention
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model.
Fig. 1 shows a water tank provided by the present invention, a water outlet pipeline is connected to a water outlet of the water tank, and a flow measurement device is disposed on the water outlet pipeline of the water tank for measuring the water outlet amount of the water tank; a water pumping device is arranged on the water outlet pipeline, and the water outlet pipeline is controlled by the water pumping device to discharge water from the water tank.
The scale detection method that the water tank can carry out is as follows:
when the water tank is in a working state S1, measuring the water flow rate Q1 of the water outlet pipeline of the water tank in unit time;
when the water tank is in a working state S2, measuring the water flow rate Q2 of the water outlet pipeline of the water tank in unit time;
in the same way, when the water tank is in a working state Sn, measuring the water flow Qn (n is a natural number) of the water outlet pipeline of the water tank in unit time;
calculating a scale metric Pn, Pn being 1-Qn/Q1 in the operating state Sn based on the operating state S1 of the water tank;
and judging the scale deposition condition of the water tank according to the Pn value.
When the no-scale state of the tank and its pipes is taken as the operating state S1, Pn reflects the absolute scale measurement at the operating state Sn.
The method for measuring the water flow per unit time Qn of the water outlet pipeline of the water tank comprises the following steps: recording an initial reading Wn1 of the flow measuring device in the Sn state, recording a reading Wn2 of the flow measuring device after water flows in the water outlet pipeline for a period of time tn, and then recording the water flow Qn of the water outlet pipeline of the water tank in the Sn state per unit time as (Wn2-Wn 1)/tn;
the unit time can be in the unit of hour, minute, second and the like, and is determined according to the actual situation.
In order to avoid working errors caused by mechanical characteristics of equipment, a water inlet pipeline, a water outlet pipeline, a flow measuring device and the like, the water flow Qn of the water outlet pipeline of the water tank in unit time can be determined by a method of measuring and averaging for multiple times;
the 'judging the scale deposition condition of the water tank according to the Pn value' comprises the steps of predicting the change trend of the scale amount along with the time through an algorithm according to the occurrence time of the working states S1, S2 and … … Sn and the corresponding relation of P1, P2 and … … Pn, and judging the time when the scale amount reaches a threshold TS 1.
The algorithm is conventional in the art and includes, but is not limited to, linear regression, exponential regression, time series analysis, and the like.
The threshold TS1 is determined comprehensively according to the specific conditions of the water tank by combining factors such as fault occurrence probability, expert experience and service standards.
The 'judging the scale state of the water tank according to the Pn value' further comprises the steps of calculating the abnormal proportion of the water discharge amount of the water outlet pipeline of the water tank in unit time according to the occurrence time of the working states S1, S2 and … … Sn and the corresponding relations of P1, P2 and … … Pn by an abnormal detection method, and judging that the water level switch is in fault when the abnormal proportion exceeds a threshold TS 2.
The anomaly detection method comprises but is not limited to numerical value judgment, Gaussian distribution quantiles, a box line graph method, DBSCAN, isolated forests and the like.
The threshold TS2 is determined comprehensively according to the anomaly detection method adopted, in combination with factors such as the probability of occurrence of a fault, expert experience, service standards, and the like.
Preferably, the water tank is further provided with a cloud communication device, and fault diagnosis capability in large-scale equipment operation is improved by means of cloud multi-equipment data analysis and comparison. The cloud communication device and the means for analyzing and comparing data by means of the cloud are not particularly limited, and the cloud communication device, the communication method and the analysis and comparison method which are commonly used in the prior art can be adopted.
Correspondingly, the utility model provides equipment comprising the water tank. Preferably, the device is a dishwasher.
Fig. 2 shows another water tank provided by the present invention, wherein a water outlet pipeline is connected to a water outlet of the water tank, a water inlet pipeline is connected to a water inlet of the water tank, a water pumping device is arranged on the water outlet pipeline, and the water outlet pipeline is controlled by the water pumping device to discharge water from the water tank; a flow measuring device is arranged on a water inlet pipeline of the water tank and is used for measuring the water inflow of the water tank; the water tank is also internally provided with a water level switch, the water level switch is used for controlling the water level in the water tank to be at a standard water level, and when the actual water level in the water tank is lower than the standard water level, water is supplied to the water tank through a water inlet pipe; and when the water level reaches the standard water level, stopping water supplement.
The scale detection method performed by the water tank is as follows:
when the water tank is in a working state S1, measuring the water flow rate Q1 of the water outlet pipeline of the water tank in unit time;
when the water tank is in a working state S2, measuring the water flow rate Q2 of the water outlet pipeline of the water tank in unit time;
in the same way, when the water tank is in a working state Sn, measuring the water flow Qn (n is a natural number) of the water outlet pipeline of the water tank in unit time;
calculating a scale metric Pn, Pn being 1-Qn/Q1 in the operating state Sn based on the operating state S1 of the water tank;
and judging the scale deposition condition of the water tank according to the Pn value.
When the no-scale state of the tank and its pipes is taken as the operating state S1, Pn reflects the absolute scale measurement at the operating state Sn.
The method for measuring the water flow per unit time Qn of the water outlet pipeline of the water tank comprises the following steps: when the water tank is in a working state Sn, firstly, adjusting the actual water level in the water tank to a standard water level through a water level switch, recording an initial reading Wn1 of a flow measuring device on a water inlet pipeline, then, outwards draining water through a water outlet pipeline of the water tank for a period of time tn, stopping draining the water, controlling the water inlet pipeline to supply water to the water tank to the standard water level through the water level switch, and recording a reading Wn2 of the flow measuring device, wherein the water flow Qn of the water outlet pipeline of the water tank in the Sn state in unit time is (Wn2-Wn 1)/tn;
in order to avoid working errors caused by mechanical characteristics of equipment, a water inlet pipeline, a water outlet pipeline, a flow measuring device and the like, the water flow Qn of the water outlet pipeline of the water tank in unit time can be determined by a method of measuring and averaging for multiple times;
the 'judging the scale deposition condition of the water tank according to the Pn value' comprises the steps of predicting the change trend of the scale amount along with the time through an algorithm according to the occurrence time of working states S1, S2 and … … Sn and the corresponding relation of P1, P2 and … … Pn, and judging the time when the scale amount reaches a threshold TS1 so as to arrange the staff to inspect according to the requirements according to the actual working conditions.
The algorithm is conventional in the art and includes, but is not limited to, linear regression, exponential regression, time series analysis, and the like.
The threshold TS1 is determined comprehensively according to the specific conditions of the water tank by combining factors such as fault occurrence probability, expert experience and service standards.
The 'judging the scale state of the water tank according to the Pn value' further comprises the steps of calculating the abnormal proportion of the water discharge amount of the water outlet pipeline of the water tank in unit time according to the occurrence time of the working states S1, S2 and … … Sn and the corresponding relations of P1, P2 and … … Pn by an abnormal detection method, and judging that the water level switch is in fault when the abnormal proportion exceeds a threshold TS 2.
The anomaly detection method comprises but is not limited to numerical value judgment, Gaussian distribution quantiles, a box line graph method, DBSCAN, isolated forests and the like.
The threshold TS2 is determined comprehensively according to the anomaly detection method adopted, in combination with factors such as the probability of occurrence of a fault, expert experience, service standards, and the like.
Preferably, the water tank is further provided with a cloud communication device, and fault diagnosis capability in large-scale equipment operation is improved by means of cloud multi-equipment data analysis and comparison. The cloud communication device and the means for analyzing and comparing data by means of the cloud are not particularly limited, and the cloud communication device, the communication method and the analysis and comparison method which are commonly used in the prior art can be adopted.
Correspondingly, the utility model provides equipment comprising the water tank. Preferably, the device is a dishwasher.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A water tank, the said water tank has water outlet pipeline and intake pipe, characterized by that, set up the flow measuring device on the water outlet pipeline or intake pipe of the said water tank;
when the flow measuring device is arranged on the water inlet pipeline of the water tank, a water level switch is also arranged in the water tank and used for adjusting the water level in the water tank;
a water pumping device is arranged on the water outlet pipeline of the water tank, and the water outlet pipeline is controlled by the water pumping device to discharge water from the water tank.
2. The water tank as claimed in claim 1, wherein the water tank is further provided with a cloud communication device.
3. An appliance comprising a water tank as claimed in any one of claims 1-2.
4. The device of claim 3, wherein the device is a dishwasher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120142841.1U CN215305648U (en) | 2021-01-19 | 2021-01-19 | Water tank and equipment comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120142841.1U CN215305648U (en) | 2021-01-19 | 2021-01-19 | Water tank and equipment comprising same |
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| Publication Number | Publication Date |
|---|---|
| CN215305648U true CN215305648U (en) | 2021-12-28 |
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| CN202120142841.1U Active CN215305648U (en) | 2021-01-19 | 2021-01-19 | Water tank and equipment comprising same |
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| CN (1) | CN215305648U (en) |
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2021
- 2021-01-19 CN CN202120142841.1U patent/CN215305648U/en active Active
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