A filtration detection structure and method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LAIZHOU FEIYUE PLASTIC TECH CO LTD
- Filing Date
- 2026-05-26
- Publication Date
- 2026-06-30
Smart Images
Figure CN122305581A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of monitoring equipment for filtration systems, and specifically to a filtration detection structure and method. Background Technology
[0002] Household air conditioner filters are a key “air filtration barrier” in air conditioning systems. Their core function is to intercept impurities in the air, purify the air, and protect the internal components of the air conditioner. Regular cleaning is a necessary measure to ensure its effective function and avoid health risks and equipment failure. Traditional household air conditioner filters use a mesh structure, which can filter larger dust particles. However, due to the use of air conditioners, dust accumulates significantly. Furthermore, the strong airflow from the air conditioner and prolonged use mean that changes in airflow are not noticeable to the human body, but the filtration function is greatly reduced. Additionally, due to different installation locations, such as high-dust or high-grime areas, regular cleaning is insufficient. Ordinary operators cannot determine whether the air conditioner filter's filtration efficiency has been affected. Therefore, there is an urgent need for a device to solve these problems. Summary of the Invention
[0003] In order to solve the above-mentioned problems in the existing technology, the purpose of this invention is to provide an effective solution for judging the filtration effect of air conditioning filters, and at the same time reminding users to actively clean the filters.
[0004] The technical solution adopted in this invention is as follows: A filter detection structure is installed on both sides of the plane of the air conditioning filter of an air conditioning device, including a suspension frame provided on the air inlet side of the air conditioning filter, an illumination light source provided in the middle of the suspension frame, a rectangular frame provided on the air outlet side of the air conditioning filter, a photosensitive element provided in the middle of the rectangular frame for sensing the intensity of the illumination light source, and an identification and processing terminal provided inside the air conditioner for judging the photosensitive information of the photosensitive element.
[0005] In one embodiment, the rectangular frame has a through placement groove in its middle, through which the air conditioning filter can be placed in the middle of the rectangular frame.
[0006] In one embodiment, the illumination source includes a plurality of spotlight tubes arranged in an array inside the hanging frame. Each spotlight tube has an extension rod at both ends, which is rotatably connected to the side of the hanging frame. The spotlight tube is also provided with a light guide to change the incident angle of the spotlight tube toward the air conditioning filter.
[0007] In one embodiment, the light guide includes a light guide plate disposed on both sides of the spotlight tube. A worm gear is provided in the middle of the extension rod. A worm is abutted on one side of several worm gears on the same side. Fixed blocks are provided at both ends of the worm. The fixed blocks are fixedly connected to the hanging frame. A rotary motor is also provided on the fixed block. The rotary motor is used to drive the worm to rotate the worm gear.
[0008] In one embodiment, the photosensitive element includes a plurality of flaps arranged in a linear array within the rectangular frame cavity. The flaps have a plurality of evenly distributed photosensitive blocks in the middle, and the flaps have rotating parts at both ends for rotating the flaps to cover the air outlet side of the air conditioning filter.
[0009] In one embodiment, the photosensitive block is a photovoltaic panel.
[0010] In one embodiment, the rotating component includes extended rotating rods disposed at both ends of the flip plate. The extended rotating rods pass through and are rotatably connected to the frame of the rectangular frame. A rotating wheel is provided at the end of the extended rotating rod away from the flip plate. A transmission belt is mounted on the rotating wheel located on the same side. A transmission motor is also provided on the rectangular frame, and the transmission motor is connected to one of the rotating wheels.
[0011] In one embodiment, the identification and processing terminal includes an information transmission module, a current monitoring module, and a data statistics module, used to statistically analyze the current changes of several photovoltaic panels, record the data, and then transmit the information to the processing terminal, which is a mobile phone.
[0012] In one embodiment, a filtering detection method is also included, the detection method being as follows: S1. Put the air conditioner into sleep mode; S2. Cover the air outlet side of the air conditioner filter with the photosensitive element; S3. Turn on the illumination light source, pass the light source through the air conditioning filter, use the photosensitive element to receive the light source, and at the same time use the recognition and processing terminal to determine the intensity of the light source. S4. Output weakened light source position and area S, air conditioner filter ventilation area Q, area S / air conditioner filter ventilation area Q=E, use the identification processing terminal to output information: clean; or do not clean; S5. When cleaning the output, remove the air conditioning filter for cleaning.
[0013] In one embodiment, when E > 60%, output cleanup.
[0014] The beneficial effects of this invention are as follows: 1. The equipment adopts a flat installation structure, which effectively reduces the installation volume and can be applied to household air conditioners of different sizes, thus improving its applicability; 2. The adjustable incident angle light source can accommodate the collection of multiple sets of control data, avoiding misjudgment caused by a single data volume; 3. Using photosensitive blocks similar to those used in photovoltaic panels can reduce manufacturing costs, while the output current has high discrimination accuracy and can effectively identify changes in the obstruction of light and shadow by dust thickness. 4. The rotatable flap structure can reduce the impact of the detection equipment on the air volume, and at the same time, the number of flaps can be increased to reduce the overall thickness of the equipment, resulting in less structural change when installing the air conditioner and a more aesthetically pleasing application. 5. By controlling and identifying areas where dust accumulates, the accuracy of cleaning frequency for air conditioning filters can be improved, simplifying manual operations.
[0015] Overall, the equipment has a simple structure and effectively utilizes the effect of dust accumulation thickness on light source illumination to determine cleaning needs. It has good practicality and economy, which is beneficial to the promotion and use of the equipment. Attached Figure Description
[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.
[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the drive worm gear structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the photosensitive element of the present invention; Figure 5 This is a three-dimensional structural diagram of the illumination light source of the present invention; Figure 6 This is a schematic diagram of the monitoring principle of the present invention.
[0018] Figure descriptions: 1. Rectangular frame; 11. Placement slot; 12. Spotlight tube; 121. Light guide plate; 2. Hanging frame; 3. Air conditioner filter; 4. Worm gear; 41. Worm wheel; 42. Extension rod; 43. Fixing block; 431. Rotary motor; 5. Flip plate; 51. Photosensitive block; 52. Extension rotating rod; 521. Rotating wheel; 53. Transmission belt; 54. Transmission motor; 8. Incident light; 81. Outgoing light; 811. Partial outgoing light; 9. Dust accumulation. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0021] The following is combined Figure 1-6 This invention describes a specific embodiment of a filter detection structure installed on both sides of the plane of an air conditioning filter 3 in an air conditioning unit. It includes a suspension frame 2 located on the air inlet side of the air conditioning filter 3. The suspension frame 2 can be installed with a gap between the air conditioning filters 3. This design allows the system to flexibly select the air supply method according to actual operating needs: centralized air supply can be achieved through the suspension frame 2 itself, or auxiliary or distributed air supply can be achieved using the gap between the suspension frame 2 and the air conditioning filter 3. An illumination light source is provided in the middle of the suspension frame 2. Advantageously, the illumination light source includes several spotlight tubes 12 to provide stable and uniform illumination conditions during the detection process, such as long fluorescent tubes or high-brightness LED strips. The key is to form a rectangular light spot covering the effective area of the filter. The specific type of light source can be selected and adjusted according to factors such as cost budget, energy consumption requirements, and installation conditions in the actual application scenario. Several spotlight tubes 12 are arranged in an array inside the hanging frame 2. Each spotlight tube 12 has an extension rod 42 at both ends, which is rotatably connected to the side of the hanging frame 2. The spotlight tube 12 is also equipped with a light guide to change the incident angle of the spotlight tube 12 toward the air conditioner filter 3. The air conditioner filter 3 has a rectangular frame 1 on the air outlet side, and a photosensitive element is provided in the middle of the rectangular frame 1 to sense the intensity of the irradiating light source. The air conditioner is also equipped with an identification and processing terminal, which is electrically connected to the photosensitive element and can receive and analyze the light intensity information collected by the photosensitive element, and then determine the degree of filter pollution according to a preset algorithm.
[0022] Beneficially, the rectangular frame 1 has a through placement groove 11 in the middle, through which the air conditioning filter 3 can be placed in the middle of the rectangular frame 1. When taking it out, it can be directly pulled out from the rectangular frame 1, which is convenient for cleaning.
[0023] Beneficially, the light guide includes a light guide plate 121, which is located on both sides of the spotlight tube 12. Two sets of light guide plates 121 can be arranged in parallel, or intersected on one side or on the extended surface. This can guide the illumination range of the light source, avoid the superposition of multiple light sources causing errors in the photosensitive element's interpretation, and minimize the illumination interval between connected light sources when necessary, thereby improving detection accuracy. It works in conjunction with the spotlight tube 12 to guide the rectangular light source through the air conditioning filter 3. The extension rod 42 has a worm gear 41 in the middle, and several worm gears 41 on the same side abut against a worm 4. The worm 4 has fixing blocks 43 at both ends, and the worm 4 is circumferentially connected to the fixing blocks 43. The fixing blocks 43 are fixedly connected to the hanging frame 2. The fixing blocks 43 also have a rotary motor 431, which drives the worm 4 to rotate the worm gears 41. The attached drawing uses an exaggerated drawing style and does not represent the actual shape and structure of the worm 4 or worm gears 41. It mainly shows their installation position.
[0024] Beneficially, the photosensitive element includes several flaps 5, which are arranged in a linear array within the rectangular frame 1. Specifically, the use of rotatable flaps 5 can reduce the impact of the detection equipment on the airflow, and at the same time, the number of flaps 5 can be increased to reduce the overall thickness of the equipment. Several evenly distributed photosensitive blocks 51 are provided in the middle of the flaps 5, and rotating parts are provided at both ends of the flaps 5 to rotate the flaps 5 to cover the air outlet side of the air conditioning filter 3. Preferably, the photosensitive blocks 51 are photovoltaic panels, which, together with the spotlight tube 12, can generate current signals of corresponding intensity according to the received light intensity and the light-receiving area to determine the height or thickness of the dust accumulation 9. In actual operation, the beam of light emitted by the spotlight tube 12 is adjusted by the light guide and irradiated onto the photosensitive blocks 51 in the flap 5 area. When the coverage height or thickness of its surface changes due to dust accumulation, the light transmittance and effective light-receiving area of the photosensitive blocks 51 will change accordingly, thereby outputting currents of different magnitudes. By monitoring these current changes, the identification and processing terminal can accurately determine the dust accumulation status on the filter.
[0025] Beneficially, the rotating component includes extended rotating rods 52 located at both ends of the flip plate 5. The extended rotating rods 52 pass through and are rotatably connected to the frame of the rectangular frame 1. A rotating wheel 521 is provided at the end of the extended rotating rod 52 away from the flip plate 5. A transmission belt 53 is mounted on the rotating wheel 521 on the same side. A transmission motor 54 is also provided on the rectangular frame 1. The transmission motor 54 is connected to one of the rotating wheels 521. The transmission motor 54 and the rotating motor 431 can be selected according to the needs of the actual application scenario. The motor can accurately control the rotation angle and stop immediately at the set angle position. The motor should have reliable positioning performance and real-time stop function to ensure that it can quickly respond to control commands during operation and accurately stop at the specified angle position.
[0026] Beneficially, the identification and processing terminal includes an information transmission module, which can use common wireless communication units such as Bluetooth and Wi-Fi modules to achieve remote data transmission; a current monitoring module, which can realize real-time monitoring of current. This module can be electrically connected to all photosensitive blocks 51 through a PCB circuit board. Such circuit design and signal acquisition methods are existing mature technologies, so they will not be described in detail. The data statistics module is usually based on a PLC control system, which can coordinate and control the drive motor 54, the rotary motor 431, and other electrical equipment and receivers. This module is also based on existing technology and will not be described in detail. The main function of the identification and processing terminal is to collect current change data of multiple photovoltaic panels, record the corresponding information, and send the processed data to the processing terminal through the information transmission module. The processing terminal is a mobile phone, which is convenient for reminding cleaning. The connection and configuration of all electrical circuits are based on the actual functional implementation to ensure the stable and reliable operation of the system.
[0027] Also beneficial is a method for testing air conditioner filters, the method of which is as follows: S1. Put the air conditioner into sleep mode to ensure stable airflow during the test and avoid interfering with the test results; S2. Cover the air outlet side of the air conditioning filter 3 with the photosensitive element to ensure that all air outlet areas are within the monitoring range of the photosensitive element; S3. Turn on the illumination light source, pass the light source through the air conditioning filter 3, use the photosensitive element to receive the light source, and at the same time use the recognition and processing terminal to determine the intensity of the light source. S4. Output weakened light source position and area S, air conditioning filter 3 ventilation area Q, area S / air conditioning filter 3 ventilation area Q = E, use the identification processing terminal to output information: clean; or do not clean; S5. When cleaning the output, the user needs to remove the air conditioning filter 3 and clean it to restore its ventilation and filtration performance.
[0028] Beneficial, when E>60%, output cleanup.
[0029] Working principle of this invention: The operator first starts the drive motor 54 to rotate one of the photosensitive blocks 51, which in turn drives the extension rotating rods 52 on all the flaps 5 to rotate via the drive belt 53. This further rotates the flaps 5, causing all the flaps 5 to be parallel to the air outlet side of the air conditioning filter 3. Then, the spotlight tube 12 is turned on, and the light source of the spotlight tube 12 shines through the air conditioning filter 3 onto the photosensitive block 51 on the flap 5. Since the photosensitive block 51 on the flap 5 is a photovoltaic panel, the spotlight tube 12 will cause the photosensitive block 51 to generate a weak current when it shines on it. The generated current is then recorded by the identification and processing terminal. The rotating motor 431 continues to rotate the worm gear 4, which in turn drives all the worm wheels 41 to rotate. During the process, the worm gear 41 drives the rotating spotlight tube 12. Due to the guiding effect of the light guide plate 121, when the spotlight tube 12 rotates, a rectangular light source is generated, which illuminates the photosensitive block 51 on the flip plate 5 and generates current. At the same time, the current generated by the photosensitive block 51 is different due to the different incident angles of the light emitted by the light guide plate 121. By rotating the spotlight in both directions to change the incident angle of the light source, the current generated by the photosensitive block 51 at each angle is recorded by the recognition and processing terminal. This can be used as a control group for subsequent testing. The above-mentioned rotation process of the spotlight tube 12 and the flip plate 5 is then reversed, so that the air can be freely filtered through the air conditioning filter 3. Please refer to Figure 6 As shown, after the air conditioner is used and then turned off, dust introduced from the air conditioner's air supply end forms a dust accumulation 9 on the air conditioner filter 3. This dust accumulation 9 has a slight thickness, but the thickness of the air conditioner filter 3 remains constant. Due to the thickness of the dust accumulation 9, when the incident light 8 of the spotlight tube 12 shines on the flap 5 through the air conditioner filter 3 at different angles, the emitted light 81 is blocked by the thickness of the dust accumulation 9, causing the brightness of the emitted light 81 to change, further reducing it to a portion of the original emitted light amount. At this angle... When the spotlight tube 12 illuminates the photosensitive block 51, a deviation occurs between the photosensitive block 51 and the previously recorded control group. The result is then sent to the recognition and processing terminal for recording. This allows the terminal to determine that the dust accumulation 9 in the area of the air conditioning filter 3 is relatively thick. The terminal can then record the area of dust accumulation 9. Specifically, the deviation range from the previously recorded control group can be set according to the material of the photosensitive block 51, so it will not be elaborated further. When the recorded area exceeds 60% of the air conditioning area, the terminal can output a cleaning command to remind the user to clean. Specifically, the denser the photosensitive block 51 is designed, the higher the recognition accuracy.
[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The above content is merely an example and illustration of the structure of this invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the structure of the invention or exceed the scope defined by the claims, all of which should fall within the protection scope of this invention.
Claims
1. A filter detection structure installed on both sides of the plane of an air conditioner filter (3) of an air conditioning apparatus, characterized in that: The air conditioner includes a hanging frame (2) located on the air inlet side of the air conditioner filter (3), with an illumination light source in the middle of the hanging frame (2) and a rectangular frame (1) located on the air outlet side of the air conditioner filter (3). A photosensitive element is located in the middle of the rectangular frame (1) to sense the intensity of the illumination light source. The air conditioner also includes an identification and processing terminal to determine the photosensitive information of the photosensitive element.
2. The filter detection structure of claim 1, wherein: The rectangular frame (1) has a through placement groove (11) in the middle, and the air conditioning filter (3) can be placed in the middle of the rectangular frame (1) through the placement groove (11).
3. The filter detection structure according to claim 1, characterized in that: The illumination source includes a plurality of spotlight tubes (12), which are arranged in an array in the inner cavity of the hanging frame (2). The two ends of the spotlight tubes (12) are provided with extension rods (42), which are rotatably connected to the side of the hanging frame (2). The spotlight tubes (12) are also provided with light guides to change the incident angle of the spotlight tubes (12) toward the air conditioning filter (3).
4. The filter detection structure according to claim 3, characterized in that: The light guide includes a light guide plate (121) which is located on both sides of the spotlight tube (12). The extension rod (42) has a worm gear (41) in the middle. Several worm gears (41) on the same side abut against a worm (4). The worm (4) has fixing blocks (43) at both ends. The fixing blocks (43) are fixedly connected to the hanging frame (2). The fixing blocks (43) are also equipped with a rotary motor (431). The rotary motor (431) is used to drive the worm (4) to rotate the worm gear (41).
5. The filter detection structure according to claim 3, characterized in that: The photosensitive element includes several flip plates (5), which are arranged in a linear array in the inner cavity of the rectangular frame (1). Several evenly distributed photosensitive blocks (51) are provided in the middle of the flip plate (5). Rotating elements are provided at both ends of the flip plate (5) to rotate the flip plate (5) to cover the air outlet side of the air conditioning filter (3).
6. The filter detection structure according to claim 5, characterized in that: The photosensitive block (51) is a photovoltaic panel.
7. The filter detection structure according to claim 6, characterized in that: The rotating component includes extended rotating rods (52) located at both ends of the flip plate (5). The extended rotating rods (52) pass through and are rotatably connected to the frame of the rectangular frame (1). A rotating wheel (521) is provided at one end of the extended rotating rod (5) away from the flip plate (5). A transmission belt (53) is mounted on the rotating wheel (521) on the same side. A transmission motor (54) is also provided on the rectangular frame (1). The transmission motor (54) is connected to one of its rotating wheels (521).
8. The filter detection structure according to claim 1, characterized in that: The identification and processing terminal includes an information transmission module, a current monitoring module, and a data statistics module, which are used to statistically analyze the current changes of several photovoltaic panels, record the data, and then transmit the information to the processing terminal, which is a mobile phone.
9. A filtering detection method, using the filtering detection structure as described in any one of claims 1-8, characterized in that: The detection method is as follows: S1. Put the air conditioner into sleep mode; S2. Cover the air outlet side of the air conditioning filter (3) with the photosensitive element; S3. Turn on the illumination light source, pass the light source through the air conditioner filter (3), use the photosensitive element to receive the light source, and at the same time use the recognition and processing terminal to determine the intensity of the light source; S4. Output weakened light source position and area S, air conditioning filter (3) ventilation area Q, area S / air conditioning filter (3) ventilation area Q=E, use identification processing terminal output information: clean; or do not clean; S5. When cleaning the output, remove the air conditioning filter (3) for cleaning.
10. The air conditioner filter detection method according to claim 9, characterized in that: When E > 60%, output cleanup.