A smart filter element

Abstract

The utility model discloses an intelligent filter element, including a filter medium plate, a detection unit, a chimeric frame, and a measuring circuit, characterized in that the detection unit is composed of a plurality of porous electrodes, the porous electrodes are relatively mounted on the chimeric frame, the chimeric frame is mounted on the filter medium plate, the filter medium plate is cylindrical, flat or folded, the filter medium plate is mounted in a filter, the detection unit is electrically connected to the measuring circuit, and the measuring circuit is used to measure the output changes of the capacitance and impedance of the detection unit. The utility model adopts porous electrodes mounted on the filter medium plate, and measures the property changes before and after the oil is filtered in real time without affecting the normal flow of the oil and the filtering of pollutants, so as to monitor the filtering effect of the filter medium in real time, and can accurately sense the remaining service life of the filter element.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid filtration, and in particular to an intelligent filter element and a use method thereof. Background Art

[0002] Using filter media to filter impurities from liquids or gases is a widely used technology in modern society. For example, oil filters are widely used in industry to filter and purify lubricating oil in large equipment, air filters used in air conditioners and cars, etc. In these applications, the filter media will lose its filtering function after being blocked by contaminants, so it is important to replace the filter element in the filter in time.

[0003] However, in current industrial and household equipment, filter cartridges are usually replaced based on usage time. For example, the design service life of an oil filter cartridge is usually 2,000 hours, and it is replaced after expiration. In actual applications, since the pollutant content of the filtered fluid varies, it is necessary to develop an intelligent filter cartridge that can monitor the filter cartridge's usage effect and remaining life in real time. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an intelligent filter element and a method of use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A smart filter element, including a filter medium plate, a detection unit, a mosaic frame, and a measuring circuit, characterized in that the detection unit is composed of a plurality of porous electrodes, the porous electrodes are relatively mounted on the mosaic frame, the mosaic frame is mounted on the filter medium plate, the filter medium plate is cylindrical, flat or folded, the filter medium plate is mounted in a filter, the detection unit is electrically connected to the measuring circuit, the measuring circuit is used to measure the output changes of the capacitance and impedance of the detection unit, and the content of solid particles contained in the filtered fluid and the changes in the properties of the fluid before and after filtration can be sensed through the output changes of the capacitance and impedance, and the filtering effect of the filter element during operation can be determined in real time and the remaining service life of the filter element can be monitored.

[0007] Preferably, the porous electrode is a metal sheet or metal mesh with through holes evenly distributed on the surface, and the filter medium plate is made of filter paper, filter felt, polymer fiber, or porous ceramic filter material.

[0008] Preferably, the chimeric skeleton is composed of a first skeleton and a second skeleton having the same shape, the first skeleton is provided with a plurality of conical protrusions, the second skeleton is provided with a plurality of mounting holes, the conical protrusions of the first skeleton can be correspondingly inserted into the mounting holes of the second skeleton and stuck, and the first skeleton and the second skeleton are made of polymer materials.

[0009] Preferably, the chimeric skeleton is a frame structure provided with a cavity, the first porous electrode and the second porous electrode are respectively installed on the two surfaces of the first skeleton, the third porous electrode and the fourth porous electrode are respectively installed on the two surfaces of the second skeleton, the conical protrusion of the first skeleton passes through the filter medium plate and engages with the second skeleton, the first porous electrode and the second porous electrode form a first detection unit, the second porous electrode and the third porous electrode form a second detection unit, the third porous electrode and the fourth porous electrode form a third detection unit, and the space between the two electrodes of the second detection unit is filled with filter medium.

[0010] Preferably, the first skeleton and the second skeleton have the same thickness, and a plurality of guide holes parallel to the surface of the porous electrode are arranged around the frames of the first skeleton and the second skeleton. The diameter of the guide holes is much larger than the through holes on the porous electrode, thereby ensuring that the filtered fluid can pass smoothly.

[0011] Preferably, when the filter medium plate is a porous ceramic or plastic sheet, the second porous electrode and the third porous electrode in contact with the filter medium are formed on both side surfaces of the filter medium by electroplating or vacuum coating.

[0012] Preferably, the chimeric skeleton is a frame-type structure with two cavities, the first porous electrode and the second porous electrode are respectively installed on the two cavities on the same surface of the first skeleton, the third porous electrode is installed on a surface of the second skeleton, the first porous electrode and the third porous electrode form a first detection unit, and the second porous electrode and the third porous electrode form a second detection unit.

[0013] Preferably, the first porous electrode and the second porous electrode are provided with through holes of different sizes or distribution densities, which can produce different blocking effects on solid particles and water droplets in the fluid.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model adopts a porous electrode installed on the filter medium plate, and measures the property changes of the oil before and after filtration in real time without affecting the normal flow of the oil and the filtration of pollutants, so as to monitor the filtration effect of the filter medium in real time and accurately perceive the remaining service life of the filter element;

[0016] 2. The utility model adopts multiple detection units for differential measurement, which can eliminate the influence of common factors such as temperature on the measurement and realize accurate measurement of solid particles accumulated in the filter medium;

[0017] 3. The intelligent filter element of the utility model can not only monitor the use effect of the filter element in real time, but also monitor the quality change of the filtered oil at the same time, so as to realize the replacement of the lubricating oil of the equipment on demand;

[0018] 4. The intelligent filter element of the utility model can utilize existing mature filter element products, and the detection unit adopts a snap-on installation, which is convenient, simple and low-cost, and can realize large-scale use of the intelligent filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view when the filter medium plate in the utility model is cylindrical;

[0020] Figure 2 It is a top view of the filter medium plate of the utility model when it is cylindrical;

[0021] Figure 3 It is a schematic diagram of the structure when the chimeric skeleton is two cavities and the filter medium plate is a flat plate in the utility model;

[0022] Figure 4 It is an assembly diagram of the chimeric frame when the chimeric frame in the utility model is a cavity;

[0023] Figure 5 It is a top view of the first frame when the chimeric frame in the utility model is a cavity;

[0024] Figure 6 for Figure 5 AA section view;

[0025] Figure 7 It is a top view of the second frame when the interlocking frame is a cavity in the utility model;

[0026] Figure 8 for Figure 7 BB section view;

[0027] Fig. 9 It is a partial enlarged view of the filter medium plate when the embedded frame is a cavity in the utility model;

[0028] Fig.10 This is an assembly diagram of the chimeric frame when the chimeric frame in the utility model has two cavities.

[0029] In the figure: 100 filter medium plate, 200 porous electrode, 201 first porous electrode, 202 second porous electrode, 203 third porous electrode, 204 fourth porous electrode, 205 first detection unit, 206 second detection unit, 207 third detection unit, 300 mosaic skeleton, 301 first skeleton, 302 second skeleton, 303 conical protrusion, 304 mounting hole, 305 guide hole, 306 cavity, 400 measurement circuit. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] Reference Figure 1-10 A smart filter element includes a filter medium plate 100, a detection unit, a mosaic frame 300, and a measuring circuit 400. The detection unit is composed of a plurality of porous electrodes 200. The porous electrodes 200 are relatively mounted on the mosaic frame 300. The mosaic frame 300 is mounted on the filter medium plate 100. The filter medium plate 100 is cylindrical, flat or folded. The filter medium plate 100 is installed in a filter. The detection unit is electrically connected to the measuring circuit 400. The measuring circuit 400 is used to measure the output changes of the capacitance and impedance of the detection unit. The output changes of the capacitance and impedance can be used to sense the content of solid particles contained in the filtered fluid and the changes in the properties of the fluid before and after filtration, and the filtering effect of the filter element during operation can be determined in real time and the remaining service life of the filter element can be monitored.

[0032] The porous electrode 200 is a metal sheet or metal mesh with through holes evenly distributed on the surface, and the filter medium plate 100 is made of filter paper, filter felt, polymer fiber, or porous ceramic filter material.

[0033] The chimeric skeleton 300 is composed of a first skeleton 301 and a second skeleton 302 having the same shape. The first skeleton 301 is provided with a plurality of conical protrusions 303, and the second skeleton 302 is provided with a plurality of mounting holes 304. The conical protrusions 303 of the first skeleton 301 can be correspondingly inserted into the mounting holes 304 of the second skeleton 302 and stuck. The first skeleton 301 and the second skeleton 302 are made of polymer materials.

[0034] The mosaic skeleton 300 is a frame structure provided with a cavity 306, and the first porous electrode 201 and the second porous electrode 202 are respectively installed on the two surfaces of the first skeleton 301, and the third porous electrode 203 and the fourth porous electrode 204 are respectively installed on the two surfaces of the second skeleton 302. The conical protrusion 303 of the first skeleton 301 passes through the filter medium plate 100 and is buckled with the second skeleton 302. The first porous electrode 201 and the second porous electrode 202 form a first detection unit 205, the second porous electrode 202 and the third porous electrode 203 form a second detection unit 206, and the third porous electrode 203 and the fourth porous electrode 204 form a third detection unit 207. The space between the two electrodes of the second detection unit 206 is filled with filter medium.

[0035] The first skeleton 301 and the second skeleton 302 have the same thickness. A plurality of flow guide holes 305 parallel to the surface of the porous electrode 200 are arranged around the frames of the first skeleton 301 and the second skeleton 302. The diameter of the flow guide holes 305 is much larger than the through holes on the porous electrode 200, thereby ensuring that the filtered fluid can pass smoothly.

[0036] When the filter medium plate 100 is a porous ceramic or plastic sheet, the second porous electrode 202 and the third porous electrode 203 in contact with the filter medium are formed on both sides of the filter medium by electroplating or vacuum coating.

[0037] The chimeric skeleton 300 is a frame-type structure with two cavities 306. The first porous electrode 201 and the second porous electrode 202 are respectively installed on the two cavities 306 on the same surface of the first skeleton 301, and the third porous electrode 203 is installed on one surface of the second skeleton 302. The first porous electrode 201 and the third porous electrode 203 form a first detection unit 205, and the second porous electrode 202 and the third porous electrode 203 form a second detection unit 206.

[0038] The first porous electrode 201 and the second porous electrode 202 are provided with through holes of different sizes or distribution densities, which can produce different blocking effects on solid particles and water droplets in the fluid.

[0039] A method for using a smart filter element comprises the following steps:

[0040] S1, the filter medium plate 100 is made into a folded cylindrical shape and installed in the filter, and the electrode leads of the first detection unit 205, the second detection unit 206 and the third detection unit 207 are connected to the measurement circuit 400 through a connector;

[0041] S2, when the filter starts working, measure and record the initial capacitance readings C10, C20, C30 of the first detection unit 205, the second detection unit 206, and the third detection unit 207 when the new oil passes through the filter medium plate 100;

[0042] S3, continuously detecting the capacitance readings C1, C2, C3 of the first detection unit 205, the second detection unit 206, and the third detection unit 207, and measuring the temperature change of the oil at the same time, and performing temperature compensation on the capacitance data;

[0043] S4, calculating the changes C1-C10, C2-C20, C3-C30 of the capacitance values ​​of the first detection unit 205, the second detection unit 206, and the third detection unit 207 from the initial values;

[0044] S5. According to the time change of C1-C10, the quality change of oil before filtration, such as water content and oxide content, can be measured. According to the time change of C2-C3, the content of polar solid pollutants in the oil can be measured.

[0045] S6. According to the time change of C3-C30, the quality change of oil after filtration can be measured to determine the working state of the filter element, and the remaining service life of the filter element can be calculated in combination with C2-C3;

[0046] S7. Replace or clean the filter element according to the filtering effect and remaining life of the filter element measured by the detection unit.

[0047] A method for using a smart filter element comprises the following steps:

[0048] S1, the filter medium plate 100 is made into a folded cylindrical shape and installed in the filter, and the electrode leads of the first detection unit 205 and the second detection unit 206 are connected to the measurement circuit through a connector;

[0049] S2, setting the diameter or density of the through holes on the first porous electrode 201 to be smaller than the through holes of the second porous electrode 202, so that solid particles in the oil cannot pass through the first porous electrode 201, but can pass through the second porous electrode 202;

[0050] S3, when the filter starts working, the initial capacitance readings C10 and C20 of the first detection unit 205 and the second detection unit 206 when the new oil passes through the filter medium plate 100 are measured and recorded;

[0051] S4, continuously monitoring the capacitance readings C1 and C2 of the first detection unit 205 and the second detection unit 206, and measuring the temperature change of the oil at the same time, and performing temperature compensation;

[0052] S5, calculating the changes C1-C10, C2-C20, C2-C1 between the capacitance values ​​of the first detection unit 205 and the second detection unit 206 and the initial values;

[0053] S6. According to the time change of C1-C10, the water content and oxide content of the oil can be measured. According to the time change of C2-C1, the content of polar solid pollutants in the oil can be measured. Combined with the time change of C2-C20, the remaining service life of the filter element can be measured.

[0054] S7, simultaneously measuring the impedance value changes Z1-Z10 and Z2-Z20 of the first detection unit 205 and the second detection unit 206, and calculating the ratio of the capacitance change to the impedance change, so as to determine the polarity and conductivity of the oil and the solid pollutant;

[0055] S8 replaces or cleans the filter element according to the filtering effect and remaining life of the filter element measured by the detection unit.

[0056] Embodiment 1, as Figure 4-8 As shown, the chimeric skeleton 300 is a square structure and is made of a polymer material PEI. The porous electrode 200 uses a stainless steel metal mesh with a mesh size of 0.1 mm. The stainless steel mesh is installed on the first skeleton 301 and the second skeleton 302 by bonding. In the single-fold area of ​​the cylindrical folded filter medium plate 100, the conical protrusion 303 of the first skeleton 301 is passed through the filter paper and snap-fitted to the second skeleton 302. A first detection unit 205 is formed in the front area of ​​the filter paper, a third detection unit 207 is formed in the rear area of ​​the filter paper, and the second detection unit 206 is clamped on the filter paper.

[0057] When the oil is Fig. 9 When the oil passes through the filter medium plate 100 in the direction, the solid particles that exceed the filtering parameters of the filter medium plate 100 will be adsorbed or embedded in the filter paper. Therefore, there are no solid particles exceeding the limit in the detection area of ​​the third detection unit 207, a large number of solid particles accumulate in the detection area of ​​the second detection unit 206, and there are very few solid particles in the detection area of ​​the first detection unit 205. The measurement circuit 400 measures the capacitance values ​​C1, C2, and C3 of each detection unit. The change in C1 can measure the quality change of the oil before filtration, such as the water content and the oxide content. The change in C3 can measure the quality change of the oil after filtration, such as the water content and the oxide content. C2-C3 reflects the content of polar solid pollutants in the oil. C1-C3 can measure the quality change before and after the oil is filtered to determine the working state of the filter element. C2-C3 combined with C1-C3 can measure the remaining service life of the filter element.

[0058] Embodiment 2, as Fig.10As shown, the chimeric skeleton 300 is provided with two cavities 306, the first porous electrode 201 and the second porous electrode 202 are respectively installed on the two cavities 306 of the first skeleton 301, and the third porous electrode 203 is installed on the second skeleton 302. The diameter or distribution density of the through holes on the first porous electrode 201 is smaller than that of the through holes of the second porous electrode 202, so that the over-limit solid particles in the oil cannot pass through the first porous electrode 201, but can pass through the second porous electrode 202. Therefore, during the operation of the smart filter element, the over-limit solid particles in the oil will accumulate in the second porous electrode 203. There are no excessive solid particles in the detection area of ​​the detection unit 206, and there are no excessive solid particles in the detection area of ​​the first detection unit 205, and the capacitance readings C1 and C2 of the first detection unit 205 and the second detection unit 206 are continuously monitored; the temperature change of the oil is measured at the same time, and temperature compensation is performed; according to the time change of C1, the quality change of the oil, such as the water content and the oxide content, can be measured; according to the time change of C2-C1, the content of polar solid pollutants in the oil can be measured, and combined with the time change of C2, the remaining service life of the filter element can be measured.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A smart filter element, comprising a filter medium plate (100), a detection unit, a chimeric frame (300), and a measurement circuit (400), characterized in that: The detection unit is composed of a plurality of porous electrodes (200), wherein the porous electrodes (200) are relatively mounted on a chimeric frame (300), wherein the chimeric frame (300) is mounted on a filter medium plate (100), wherein the filter medium plate (100) is cylindrical, flat or folded, and wherein the filter medium plate (100) is mounted in a filter. The detection unit is electrically connected to a measuring circuit (400), wherein the measuring circuit (400) is used to measure the output changes of the capacitance and impedance of the detection unit. The content of solid particles contained in the filtered fluid and the changes in the properties of the fluid before and after filtration can be sensed through the output changes of the capacitance and impedance, and the filtering effect of the filter element during operation can be determined in real time and the remaining service life of the filter element can be monitored.

2. The intelligent filter element according to claim 1, characterized in that: The porous electrode (200) is a metal sheet or metal mesh with through holes evenly distributed on the surface, and the filter medium plate (100) is made of filter paper, filter felt, polymer fiber, or porous ceramic filter material.

3. The intelligent filter element according to claim 1, characterized in that: The chimeric skeleton (300) is composed of a first skeleton (301) and a second skeleton (302) having the same shape, wherein the first skeleton (301) is provided with a plurality of conical protrusions (303), and the second skeleton (302) is provided with a plurality of mounting holes (304), and the conical protrusions (303) of the first skeleton (301) can be correspondingly inserted into the mounting holes (304) of the second skeleton (302) and locked, and the first skeleton (301) and the second skeleton (302) are made of polymer materials.

4. The intelligent filter element according to claim 3, characterized in that: The chimeric skeleton (300) is a frame-type structure provided with a cavity (306); the first porous electrode (201) and the second porous electrode (202) are respectively installed on the two surfaces of the first skeleton (301); the third porous electrode (203) and the fourth porous electrode (204) are respectively installed on the two surfaces of the second skeleton (302); the conical protrusion (303) of the first skeleton (301) passes through the filter medium plate (100) and is engaged with the second skeleton (302); the first porous electrode (201) and the second porous electrode (202) form a first detection unit (205); the second porous electrode (202) and the third porous electrode (203) form a second detection unit (206); the third porous electrode (203) and the fourth porous electrode (204) form a third detection unit (207); and the space between the two electrodes of the second detection unit (206) is filled with filter medium.

5. The intelligent filter element according to claim 4, characterized in that: The thickness of the first skeleton (301) and the second skeleton (302) are the same. A plurality of flow guide holes (305) parallel to the surface of the porous electrode (200) are arranged around the frames of the first skeleton (301) and the second skeleton (302). The diameter of the flow guide holes (305) is much larger than the through holes on the porous electrode (200), thereby ensuring that the filtered fluid can pass smoothly.

6. The intelligent filter element according to claim 4, characterized in that: When the filter medium plate (100) is a porous ceramic or plastic sheet, the second porous electrode (202) and the third porous electrode (203) in contact with the filter medium are formed on both sides of the filter medium by electroplating or vacuum coating.

7. The intelligent filter element according to claim 4, characterized in that: The chimeric skeleton (300) is a frame-type structure provided with two cavities (306); the first porous electrode (201) and the second porous electrode (202) are respectively installed on the two cavities (306) on the same surface of the first skeleton (301); the third porous electrode (203) is installed on a surface of the second skeleton (302); the first porous electrode (201) and the third porous electrode (203) form a first detection unit (205); the second porous electrode (202) and the third porous electrode (203) form a second detection unit (206).

8. The intelligent filter element according to claim 7, characterized in that: The first porous electrode (201) and the second porous electrode (202) are provided with through holes of different sizes or distribution densities, which can produce different blocking effects on solid particles and water droplets in the fluid.

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