An automotive air conditioner filter element sensor assembly and its working method

Abstract

The present invention discloses an automotive air conditioner filter sensor assembly, which relates to the technical field of automotive sensors and includes a support assembly, an air intake assembly, an air flow detection assembly, and an exhaust assembly. The present invention also discloses a working method for an automotive air conditioner filter sensor assembly, which includes the following steps: equipment installation, air flow detection, data comparison, and air quality detection. By providing a support assembly, with an air intake assembly and an exhaust assembly respectively arranged at both ends of the support assembly, and an air flow detection assembly arranged in the middle of the air intake assembly, when air passes through the air intake assembly, the air flow detection assembly can judge the air flow rate and temperature through a movable column and a displacement sensor arranged inside the air intake assembly, thereby realizing the detection of air flow rate; and it can also automatically clean the air conditioner filter.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive sensors, and particularly relates to an automotive air-conditioning filter element sensor assembly and its working method. Background Art

[0002] An air filter element is a filter mainly used for air filtration of engineering locomotives, automobiles, and agricultural locomotives. Generally installed in front of the carburetor or intake pipe, it plays a role in filtering dust and sand particles in the air, ensuring that sufficient and clean air enters the cylinder. However, with long-term use, the air filter element often gets clogged. Currently, there is no dedicated device for monitoring the clogging of the air filter element, or the existing air filter sensors are not convenient to be directly installed on the air filter element due to their large volume and complex structure, and only have a single alarm function, often unable to detect the clogging of the air filter element in time.

[0003] An integrated sensor air filter assembly with the publication number CN219246732U includes an air filter housing. There are a flow sensor assembly table and a pressure loss sensor assembly table on the air outlet pipe of the air filter housing. Flow sensor interfaces and pressure loss sensor interfaces communicating with the air outlet pipe are respectively opened on the flow sensor assembly table and the pressure loss sensor assembly table. Two first connecting columns are arranged outside the flow sensor assembly table, and first screw holes are opened in the first connecting columns. Second screw holes are opened on the pressure loss sensor assembly table. By integrating and arranging the flow sensor and the pressure loss sensor with the air filter housing, arranging the flow sensor and the pressure loss sensor on the air filter assembly, and abandoning the rigid connection between the air filter assembly and the air flow meter through pipelines, the effect of multi-purpose integration is achieved.

[0004] When the sensor detects the air flow passing through the air-conditioning filter element, it frequently contacts the air, and impurities in the air affect the sensor contact, shortening its service life. Moreover, the detection content of a single sensor is limited, and it is difficult to achieve multi-faceted monitoring of the air-conditioning filter element.

[0005] Therefore, it is very necessary to invent an automotive air-conditioning filter element sensor assembly and its working method to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide an automotive air-conditioning filter element sensor assembly and its working method to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: An automotive air-conditioning filter element sensor assembly, comprising:

[0008] A support assembly, which includes a support seat, and fixed pipes are fixedly arranged at both ends of the support seat;

[0009] An intake assembly, which includes an intake pipe;

[0010] An air flow detection assembly, which includes an installation pipe. At the inner top end of the installation pipe, a first pressure sensor is provided. Below the signal input end of the first pressure sensor, a movable seat is correspondingly provided. A plurality of support rods are circumferentially arranged on the lower surface of the movable seat. The bottom ends of the support rods are fixedly provided with movable columns, and the movable columns are arranged inside the intake pipe; the top end of the movable column is fixedly provided with an extension sleeve. Inside the extension sleeve, a piston head is provided. On the upper surface of the piston head, a column rod is fixedly provided, and the column rod penetrates through the middle of the extension sleeve. At the top end of the column rod, a second pressure sensor is provided. At the bottom end of the second pressure sensor, a support is fixedly provided, and the support is fixedly provided above the extension sleeve;

[0011] An exhaust assembly, which includes an exhaust pipe. The exhaust pipe is provided as a three-way pipe. At both ends of the exhaust pipe, connection nozzles are fixedly provided. At the top end of the exhaust pipe, an exhaust nozzle is fixedly provided. At both top ends of the exhaust pipe, sockets are penetrated. Inside the sockets, plug blocks are arranged by threads. Inside the middle parts of the two plug blocks, a laser emitter and a laser receiver are respectively fixedly provided;

[0012] Controlling the movable column to be at the first height position can measure various air parameters; controlling the movable column to be at the second height position can clean the laser emitter and the laser receiver; controlling the movable column to be at the third height position can clean the air conditioner filter element.

[0013] Preferably, the intake pipe is provided as a three-way pipe. At both ends of the intake pipe, connection pipes are fixedly provided, and the top ends of the connection pipes are threadedly connected to a connection seat. At the bottom end of the intake pipe, an intake nozzle is fixedly provided. In the middle of the intake pipe, a fixed seat is penetrated.

[0014] Preferably, the movable column is provided as a hollow structure, and expansion oil is arranged inside the movable column. At the bottom end of the movable column, a heat conduction block is penetrated, and the bottom end of the heat conduction block is arranged inside the intake pipe.

[0015] Preferably, the bottom end of the heat conduction block is provided as a spherical surface, and a plurality of air guide grooves are circumferentially arranged on the lower surface of the heat conduction block. The air guide grooves are provided as arc-shaped structures. On the upper surface of the heat conduction block, a plurality of heat conduction rods are fixedly provided, and the heat conduction rods are arranged inside the movable column.

[0016] Preferably, the height of the second height position is higher than that of the first height position, and the height of the third height position is lower than that of the first height position.

[0017] Preferably, an installation cover is fixedly arranged at the top end of the installation pipe. A plurality of adjusting screws penetrate through the lower surface of the installation cover. The bottom end of the first pressure sensor is fixedly provided with an adjusting seat. A plurality of screw holes penetrate through the upper surface of the adjusting seat, and the screw holes correspond to the adjusting screws. The top end of the adjusting screw is fixedly provided with an adjusting gear. A driving gear is arranged between the plurality of adjusting gears, and the driving gear is arranged inside the installation cover. The middle part of the upper surface of the driving gear is fixedly provided with an adjusting part, and the adjusting part is arranged above the installation cover.

[0018] Preferably, air blowing holes penetrate through the inner curved arc surface of the exhaust pipe. The air blowing holes are inclined, and the inclined direction is directly opposite to the laser emitter and the laser receiver in the insertion block; the air blowing holes are connected with air blowing pipes, and the lower ends of the air blowing pipes are communicated with the air inlet holes on the pipeline below the fixed seat, and the air inlet holes are communicated with the inside of the pipeline below the fixed seat.

[0019] Preferably, both ends of the fixed pipe are movably provided with connecting seats through bearings. The middle part of the outer side of the support seat is fixedly provided with a central control panel, and a communication interface is arranged at the bottom end of the central control panel.

[0020] Preferably, an observation window penetrates through the middle part of the outer side of the air inlet pipe.

[0021] A working method of an automotive air-conditioning filter sensor assembly includes the following steps:

[0022] Step 1, equipment installation: Install two groups of sensor assemblies in the pipeline of the automotive air conditioner, and make the two groups of sensor assemblies be respectively installed at both ends of the automotive air-conditioning filter.

[0023] Step 2, air flow detection: Air first passes through a group of sensor assemblies, and the sensor assemblies detect the air flow rate. Then, after the air passes through the automotive air-conditioning filter, it reaches the other group of sensor assemblies, and the other group of sensor assemblies detect the air flow rate again.

[0024] Step 3, data comparison: By comparing the detection data of the two groups of sensor assemblies, the clogging condition of the air-conditioning filter can be obtained. The data comparison result is transmitted to the automotive central control through a data wire. When the difference between the two groups of data is large, the automotive air-conditioning filter is severely clogged, and the filter self-cleaning function is started.

[0025] Step 4, air quality detection: When the air passes through the sensor assembly, the laser emitter and the laser receiver in the sensor assembly cooperate to detect the air quality, and transmit the air quality detection data to the automotive central control. The air quality detection data can be used as an auxiliary determination of the clogging condition of the air-conditioning filter.

[0026] The technical effects and advantages of the present invention:

[0027] 1. The present invention is provided with a support assembly, and an air inlet assembly and an exhaust assembly are respectively arranged at both ends of the support assembly. An air flow detection assembly is arranged in the middle of the air inlet assembly. When air passes through the air inlet assembly, the air flow detection assembly can judge the amount of air flow through the movable column and the first pressure sensor arranged inside the air inlet assembly, so as to realize the detection of air flow.

[0028] 2. The present invention is provided with an air flow detection assembly. The air flow detection assembly includes a movable column. The air flow can be detected by the movement amplitude of the movable column. By arranging expansion oil inside the movable column, when air passes through the bottom end of the movable column, its heat can be transferred to the expansion oil, causing the expansion oil to expand due to heat. The expansion amplitude of the expansion oil can be detected by the second pressure sensor, so as to realize the real-time monitoring of air temperature while realizing the detection of air flow.

[0029] 3. The present invention is provided with a support assembly, an air inlet assembly and an exhaust assembly. The support assembly, the air inlet assembly and the exhaust assembly form an air detection device. Two sets of detection devices can be respectively installed on the pipelines on both sides of the air conditioner filter element to realize the detection of air flow and quality before and after passing through the air conditioner filter element. At the same time, the adjusting part drives the first pressure sensor to the second height position through the driving gear, the adjusting gear and the adjusting screw rod, so that the flowing air can enter the blowing pipe through the blowing holes and blow out from the blowing holes along the blowing pipe. Since the inclination direction of the blowing holes is directly opposite to the laser emitter and the laser receiver in the inserting block, the dust accumulated above the two can be blown off, playing a role in cleaning the two, and further ensuring the accuracy of air quality measurement in subsequent use.

[0030] 4. The present invention enables the adjusting part to drive the first pressure sensor to the third height position through the driving gear, the adjusting gear and the adjusting screw rod, so that the movable column can keep the air inlet nozzle sealed, and air cannot be discharged through the air inlet nozzle, making the air pressure at the filter element greater than the normal working pressure. Then, the adjusting part is controlled to drive the first pressure sensor to the first height position, and the pressurized air pushes the movable column to move upward, and the movable column no longer seals the air inlet nozzle, and the high-pressure air flow accumulated at the air conditioner filter element is depressurized. During this process, the high-pressure air flow can clean the blocked air conditioner filter element to a certain extent when passing through the air conditioner filter element, ensuring the subsequent use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention.

[0033] Figure 3 It is a diagram of the internal air flow trajectory of the overall structure of the present invention.

[0034] Figure 4 Structural schematic diagram of the intake component and the airflow detection component of the present invention.

[0035] Figure 5 Structural schematic diagram of the intake component of the present invention.

[0036] Figure 6 Structural schematic diagram of the airflow detection component of the present invention.

[0037] Figure 7 Cross-sectional structural schematic diagram of the airflow detection component of the present invention.

[0038] Figure 8 Schematic diagram of the positions of the first pressure sensor and the second pressure sensor of the present invention.

[0039] Figure 9 Structural schematic diagram of the support component of the present invention.

[0040] Figure 10 Structural schematic diagram of the exhaust component of the present invention.

[0041] In the figure: 1, support component; 2, intake component; 3, airflow detection component; 4, exhaust component; 101, support base; 102, fixed pipe; 103, connecting seat; 104, central control panel; 201, intake pipe; 202, connecting pipe; 203, intake nozzle; 204, fixed seat; 205, observation window; 301, installation pipe; 302, first pressure sensor; 303, movable seat; 304, support rod; 305, movable column; 306, heat conduction block; 307, air guide groove; 308, heat conduction rod; 309, extension sleeve; 310, piston head; 311, column rod; 312, second pressure sensor; 313, support; 314, installation cover; 315, adjusting screw; 316, adjusting seat; 317, screw hole; 318, adjusting gear; 319, driving gear; 320, adjusting part; 401, exhaust pipe; 402, connecting nozzle; 403, exhaust nozzle; 404, socket; 405, plug; 406, blowing hole; 407, blowing air pipe; 408, air inlet hole. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Embodiment 1

[0044] The present invention provides asFigures 1 to 10 An automotive air-conditioning filter sensor assembly as shown includes a support assembly 1, an intake assembly 2, an air flow detection assembly 3, and an exhaust assembly 4. The intake assembly 2 and the exhaust assembly 4 are respectively arranged at both ends of the support assembly 1, and the air flow detection assembly 3 is arranged in the middle of the intake assembly 2.

[0045] Specifically, the support assembly 1 includes a support base 101. Fixed pipes 102 are fixedly arranged at both ends of the support base 101. Connecting seats 103 are movably arranged at both ends of the fixed pipes 102 through bearings. In the middle of the outer side of the support base 101, a central control panel 104 is fixedly arranged, and a communication interface is arranged at the bottom end of the central control panel 104. The central control panel 104 can collect data of the first pressure sensor 302, the second pressure sensor 312, and the laser receiver, and transmit the data to the vehicle console, and then display the data measured by the sensors, so as to facilitate the driver and passengers to understand the air quality of the air conditioner in real time.

[0046] The intake assembly 2 includes an intake pipe 201. The intake pipe 201 is arranged as a three-way pipe. Connecting pipes 202 are fixedly arranged at both ends of the intake pipe 201, and the top ends of the connecting pipes 202 are threadedly connected to the connecting seats 103. An intake nozzle 203 is fixedly arranged at the bottom end of the intake pipe 201. A fixing seat 204 is arranged through the middle of the intake pipe 201. An observation window 205 is arranged through the middle of the outer side of the intake pipe 201. The arrangement of the observation window 205 is convenient for observing and determining the position of the movable column 305 during maintenance.

[0047] The air flow detection assembly 3 includes an installation pipe 301, and the installation pipe 301 is threadedly connected to the top end of the fixing seat 204. Specifically, a first pressure sensor 302 is arranged at the top end inside the installation pipe 301. A movable seat 303 is correspondingly arranged below the signal input end of the first pressure sensor 302. A plurality of support rods 304 are arranged around the lower surface of the movable seat 303. The bottom ends of the support rods 304 are fixedly arranged with a movable column 305, and the movable column 305 is arranged inside the intake pipe 201.

[0048] More specifically, the movable column 305 is arranged as a hollow structure, and expansion oil is arranged inside the movable column 305. A heat conduction block 306 is arranged through the bottom end of the movable column 305, and the bottom end of the heat conduction block 306 is arranged inside the intake pipe 201. And the bottom end of the heat conduction block 306 is arranged as a spherical surface, and a plurality of air guide grooves 307 are arranged around the lower surface of the heat conduction block 306. The air guide grooves 307 are arranged as arc-shaped structures. The arrangement of the air guide grooves 307 improves the contact area between the air and the heat conduction block 306, thereby improving the heat transfer efficiency. A plurality of heat conduction rods 308 are fixedly arranged on the upper surface of the heat conduction block 306, and the heat conduction rods 308 are arranged inside the movable column 305. The arrangement of the heat conduction rods 308 improves the heat conduction efficiency between the heat conduction block 306 and the expansion oil.

[0049] Specifically, an extension sleeve 309 is fixedly arranged at the top end of the movable column 305. A piston head 310 is arranged inside the extension sleeve 309. A column rod 311 is fixedly arranged on the upper surface of the piston head 310. The column rod 311 penetrates through the middle of the extension sleeve 309. A second pressure sensor 312 is arranged at the top end of the column rod 311. A support 313 is fixedly arranged at the bottom end of the second pressure sensor 312. The support 313 is fixedly arranged above the extension sleeve 309. The support 313 can support and fix the second pressure sensor 312.

[0050] Meanwhile, an installation cover 314 is fixedly arranged at the top end of the installation pipe 301. A plurality of adjusting screws 315 penetrate through the lower surface of the installation cover 314. An adjusting seat 316 is fixedly arranged on the outer periphery of the first pressure sensor 302. A plurality of screw holes 317 penetrate through the upper surface of the adjusting seat 316. The screw holes 317 correspond to the adjusting screws 315. An adjusting gear 318 is fixedly arranged at the top end of the adjusting screw 315. A driving gear 319 is arranged between the plurality of adjusting gears 318. The driving gear 319 is arranged inside the installation cover 314. An adjusting part 320 is fixedly arranged in the middle of the upper surface of the driving gear 319. The adjusting part 320 is arranged above the installation cover 314. Specifically, the adjusting part 320 is arranged as a stepping motor and can be connected to an external control device. In this way, by precisely controlling the adjusting part 320, the driving gear 319 and the adjusting gears 318 can be adjusted to rotate by the adjusting part 320, so as to drive the adjusting screw 315 to rotate. The adjusting screw 315 cooperates with the screw holes 317, so that the adjusting seat 316 moves up and down. The adjusting seat 316 can drive the first pressure sensor 302 to move, so as to adjust the initial position of the movable column 305. On the one hand, it is convenient to calibrate it. On the other hand, the height position of the movable column 305 can be adjusted, so that the movable column 305 can achieve different functions.

[0051] The exhaust assembly 4 includes an exhaust pipe 401. The exhaust pipe 401 is arranged as a tee pipe. Connecting nozzles 402 are fixedly arranged at both ends of the exhaust pipe 401, and the bottom end of the connecting nozzle 402 is threadedly connected to the connecting seat 103. An exhaust nozzle 403 is fixedly arranged at the top end of the exhaust pipe 401, and the exhaust nozzle 403 can realize the discharge of air. Socket holes 404 are penetratingly arranged at the top ends on both sides of the exhaust pipe 401. An insertion block 405 is arranged inside the socket hole 404 by means of threads. A laser emitter and a laser receiver are respectively fixedly arranged in the middle of the two insertion blocks 405. When air passes through the exhaust pipe 401, the laser emitter emits laser light. After the laser passes through the air, it reaches the laser receiver. During the process of the laser passing through the air, it is attenuated due to the influence of impurities in the air. By comparing the attenuation amount of the laser, the detection of air quality can be realized. Moreover, the two insertion blocks 405 are arranged at the arc bending part of the exhaust pipe 401. The air flow at the arc bending part of the exhaust pipe 401 is guided and discharged at the arc bending part, and will not directly impact on the laser emitter and the laser receiver in the middle of the insertion block 405, so as to prevent the air flow from impacting on the laser emitter and the laser receiver during long-term use and affecting the measurement accuracy of the two.

[0052] The present invention also provides a working method for an automotive air-conditioning filter sensor assembly, including the following steps:

[0053] Step 1, equipment installation. Install two groups of sensor assemblies in the pipeline of the automotive air conditioner, and make the two groups of sensor assemblies be respectively installed at both ends of the automotive air-conditioning filter. Specifically, when installing the sensor assembly, the sensor assembly can be set to two groups. One group is installed at the front end of the air-conditioning filter, and one group is installed at the rear end of the air-conditioning filter. The air intake nozzle 203 and the exhaust nozzle 403 are respectively connected to the pipeline of the air conditioner, so that the air in the air-conditioning pipeline passes through the air intake nozzle 203 and enters the sensor assembly, and then passes through the exhaust nozzle 403 and returns to the pipeline. The two groups of sensor assemblies can respectively detect the air before and after passing through the air-conditioning filter, and transmit the detected data to the console, so as to facilitate the driver and passengers to understand the air quality situation.

[0054] Step 2: Airflow detection. Air first passes through a set of sensor components. The sensor components detect the air flow rate. Then, the air passes through the automotive air conditioner filter element and reaches another set of sensor components. At this time, the other set of sensor components detects the air flow rate again. Air can enter the intake pipe 201 through the intake nozzle 203. During the process of air flowing inside the intake pipe 201, the air pushes the bottom end of the movable column 305, causing the movable column 305 to move upward. It squeezes the signal input end of the first pressure sensor 302 through the support rod 304 and the movable seat 303. The first pressure sensor 302 detects the pressure value of the movable column 305 and then converts it into the corresponding air flow rate according to the pressure value, so as to realize the detection of the air flow. After the movable column 305 moves upward, the air flows out through the gap between the movable column 305 and the intake pipe 201.

[0055] At the same time, when the air passes through the bottom end of the movable column 305, heat exchange occurs between the air and the lower surface of the heat conduction block 306, and the heat is transmitted to the expansion oil in the movable column 305 through the heat conduction block 306 and the heat conduction rod 308, causing the expansion oil to expand due to heat. The expansion oil expands due to heat and squeezes the piston head 310. The piston head 310 squeezes the signal input end of the second pressure sensor 312 through the column rod 311 to realize the detection of the expansion amount of the expansion oil. By converting the pressure value of the second pressure sensor 312 into the corresponding temperature value, the detection of the air temperature can be realized.

[0056] Step 3: Data comparison. By comparing the detection data of the two sets of sensor components, while obtaining the air quality, the clogging condition of the air conditioner filter element can also be obtained. The data comparison result is transmitted to the vehicle central control through the data wire. When the difference between the two sets of data is large, it indicates that the automotive air conditioner filter element is severely clogged. At this time, the vehicle starts the self-cleaning function of the filter element or reminds the driver and passengers to replace the air conditioner filter element.

[0057] Step 4: Air quality detection. When the air passes through the device, the laser emitter and the laser receiver in the device cooperate to realize the detection of the air quality and transmit the air quality detection data to the vehicle central control. At the same time, the air quality detection data is used as an auxiliary determination of the clogging condition of the air conditioner filter element. When the air passes through the exhaust pipe 401, the laser emitter emits laser, and the laser reaches the laser receiver after passing through the air. During the process of the laser passing through the air, it is affected by impurities in the air and attenuates. By comparing the attenuation amount of the laser, the detection of the air quality can be realized.

[0058] Embodiment 2

[0059] In the above embodiment, the air quality is mainly detected by emitting lasers by the laser transmitters in the two plug-ins 405 and receiving lasers by the laser receivers, and then according to the attenuation degree of the laser signal. Therefore, the accuracy of the air quality detection data depends on the accuracy of the laser transmitters in the two plug-ins 405 emitting lasers and the laser receivers receiving lasers. During the long-term use of the device, since there are dust particles in the air flowing in the exhaust pipe 401, and since the plug-in 405 is located at the arc-shaped bend of the exhaust pipe 401, the air will slow down when flowing through here, and the dust particles will also be thrown to the plug-in 405 under a certain centrifugal force, causing the dust to easily gather on the surface of the laser transmitter and laser receiver in the plug-in 405, thereby affecting the accuracy of the laser transmitter and laser receiver in measuring the air quality. In particular, when the device is used at the front end of the air conditioning filter, it is more affected by the above factors than when it is used at the rear end of the air conditioning filter. Therefore, when the device is used, it is necessary to consider solving the above problems.

[0060] Specifically, Figure 3 As shown, air holes 406 are provided through the inner curved surfaces of the exhaust pipes 401 on both sides, and the air holes 406 are arranged at an angle, and the inclination direction faces the laser transmitter and the laser receiver in the plug block 405. The air holes 406 are connected to the air blowing pipe 407, and the lower end of the air blowing pipe 407 is connected to the air inlet hole 408 on the pipeline below the fixing seat 204, and the air inlet hole 408 is connected to the inside of the pipeline below the fixing seat 204.

[0061] During the air quality detection process, the adjusting part 320 is controlled so that the adjusting part 320 drives the first pressure sensor 302 to the first height position through the driving gear 319, the adjusting gear 318, and the adjusting screw 315. When the first pressure sensor 302 is at the first height position, it is used to measure the air flow rate. During the measurement, the movable column 305 can form a blockage to the air inlet 408 during the up and down movement, and the flowing air will not pass through the air inlet 408 and the blowing pipe 407.

[0062] After the device has been working for a long time and vehicle maintenance is required, to improve the accuracy of air detection, it is necessary to clean the laser emitted by the laser emitter in the two plug blocks 405 and the dust accumulated on the laser receiver. At this time, by controlling the adjustment unit 320, the adjustment unit 320 drives the first pressure sensor 302 to the second height position through the driving gear 319, the adjusting gear 318, and the adjusting screw 315. The height of the second height position is higher than that of the first height position. At this time, when the air conditioner intakes air (usually with the wind force adjusted to the maximum), the incoming air pushes the movable column 305 upward, and the movable column 305 can move above the air inlet hole 408 and no longer blocks the air inlet hole 408. The flowing air can enter the air blowing pipe 407 through the air inlet hole 408 and blow out from the air blowing hole 406 along the air blowing pipe 407. Since the inclination direction of the air blowing hole 406 is directly opposite to the laser emitter and the laser receiver in the plug block 405, the blown gas can blow onto the laser emitter and the laser receiver, blowing off the dust accumulated above the two, playing a role in cleaning the two, and thus ensuring the accuracy of air quality measurement in subsequent use.

[0063] After cleaning the laser emitter and the laser receiver, by controlling the adjustment unit 320, the adjustment unit 320 can accurately drive the first pressure sensor 302 to the first height position through the driving gear 319, the adjusting gear 318, and the adjusting screw 315, that is, the position for detecting air quality, so as to continue to detect air quality during the use of the air conditioner.

[0064] Embodiment III

[0065] When the device is in use, in order to accurately measure the quality of the air, generally two are set. One is set at the front end of the air conditioner filter element, and the other is set at the rear end of the air conditioner filter element; the one located at the front end of the air conditioner filter element can measure the quality and temperature of the air entering the air conditioner filter element; after the measured air is temperature-adjusted and filtered, it reaches the sensor assembly set at the rear end of the air conditioner filter element, that is, the air after temperature adjustment and filtration can be measured; in this way, the air flow rate and quality before and after temperature adjustment and filtration can be obtained, which is convenient for the driver and passengers to timely understand the air flow rate and quality parameters.

[0066] After the air conditioner filter element has been used for a long time, the degree of blockage of the filter element can be determined by measuring the difference in air volume and air quality before and after through the front and rear sensor assemblies. Generally speaking, when the difference in air volume before and after is relatively large and / or the difference in air quality before and after is small, it indicates that the automotive air conditioner filter element is severely blocked and needs to be cleaned or replaced. For general blockages, the driver and passengers can clean the automotive air conditioner filter element to a certain extent through the following operation methods.

[0067] In addition, according to the comparison of the measurement results of the front and rear two sensor components, when the air-conditioning filter element is severely blocked, it can be replaced in time during vehicle maintenance to ensure the air filtration effect.

[0068] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automotive air conditioning filter element sensor assembly, characterized in that: include: A support assembly (1), comprising a support seat (101), wherein both ends of the support seat (101) are fixedly provided with fixing pipes (102); An air intake assembly (2), comprising an air intake pipe (201), the air intake pipe (201) being configured as a three-way pipe, connecting pipes (202) being fixedly provided at both ends of the air intake pipe (201), the top end of the connecting pipe (202) being threadedly connected to a connecting seat (103), an air intake nozzle (203) being fixedly provided at the bottom end of the air intake pipe (201), and a fixing seat (204) being provided through the middle of the air intake pipe (201); An airflow detection assembly (3) comprises a mounting tube (301), a first pressure sensor (302) being arranged at the top end of the mounting tube (301), a movable seat (303) being arranged below the signal input end of the first pressure sensor (302), a plurality of support rods (304) being arranged around the lower surface of the movable seat (303), a movable column (305) being fixedly arranged at the bottom end of the support rod (304), and the movable column (305) being arranged inside the air intake pipe (201); the movable column (30 5) is fixedly provided with an extension sleeve (309) at the top end, a piston head (310) is provided inside the extension sleeve (309), a column rod (311) is fixedly provided on the upper surface of the piston head (310), and the column rod (311) is provided through the middle part of the extension sleeve (309), a second pressure sensor (312) is provided at the top end of the column rod (311), a support (313) is fixedly provided at the bottom end of the second pressure sensor (312), and the support (313) is fixedly provided above the extension sleeve (309); The movable column (305) is configured as a hollow structure, and expansion oil is provided inside the movable column (305); a heat conducting block (306) is provided through the bottom end of the movable column (305), and the bottom end of the heat conducting block (306) is provided inside the air intake pipe (201); When air flows inside the air intake pipe (201), the air pushes the bottom end of the movable column (305), causing the movable column (305) to move upward, and the movable column (305) presses the signal input end of the first pressure sensor (302) through the support rod (304) and the movable seat (303). The first pressure sensor (302) detects the pressure value of the movable column (305), and then converts the pressure value into a corresponding air flow rate, thereby realizing the detection of the air flow rate; When the air passes through the bottom end of the movable column (305), heat exchange occurs between the air and the lower surface of the heat-conducting block (306), and the heat is transferred to the expansion oil in the movable column (305), so that the expansion oil expands due to the heat. The expansion of the expansion oil presses the piston head (310), and the piston head (310) presses the signal input end of the second pressure sensor (312) through the column rod (311). By converting the pressure value of the second pressure sensor (312) into a corresponding temperature value, the air temperature is detected; An exhaust assembly (4), comprising an exhaust pipe (401), the exhaust pipe (401) being configured as a three-way pipe, both ends of the exhaust pipe (401) being fixedly provided with connection nozzles (402), the top end of the exhaust pipe (401) being fixedly provided with an exhaust nozzle (403), the top ends of both sides of the exhaust pipe (401) being penetrated by sockets (404), the interior of the socket (404) being provided with an insert block (405) through a thread, and the middle parts of the two insert blocks (405) being fixedly provided with a laser transmitter and a laser receiver respectively; An air blowing hole (406) is provided through the inner curved surface of the exhaust pipe (401); the air blowing hole (406) is arranged at an angle, and the direction of the angle is directly opposite to the laser transmitter and the laser receiver in the plug block (405); the air blowing hole (406) is connected to a blowing pipe (407); the lower end of the blowing pipe (407) is connected to an air inlet hole (408) on the pipeline below the fixing seat (204); and the air inlet hole (408) is connected to the inside of the pipeline below the fixing seat (204); The movable column (305) is controlled to be located at a first height position so as to measure the quality of the air. When the first pressure sensor (302) is located at the first height position, it is used to measure the flow rate of the air. Moreover, during measurement, the movable column (305) can block the air inlet hole (408), so that the flowing air will not pass through the air inlet hole (408) and the blowing pipe (407). The movable column (305) is controlled to be located at a second height position. When the air conditioner takes in air, the incoming air pushes the movable column (305) to move upward, and the movable column (305) can move to a position above the air inlet hole (408) and no longer block the air inlet hole (408). The flowing air can pass through the air inlet hole (408) into the blowing pipe (407), and flow from the blowing pipe (407) to the blowing pipe (407). The air hole (406) is blown out. Since the inclination direction of the blowing hole (406) is directly facing the laser emitter and the laser receiver in the plug block (405), the laser emitter and the laser receiver can be cleaned. The movable column (305) is controlled to be located at the third height position, and the first pressure sensor (302) is driven to the third height position, so that the movable column (305) can maintain the seal of the air inlet nozzle (203), and the air cannot be discharged through the air inlet nozzle (203), so that the air pressure at the filter element is greater than the pressure during normal operation, and then the first pressure sensor (302) is driven to the first height position, and the movable column (305) no longer seals the air inlet nozzle (203), and the high-pressure air flow gathered at the air conditioning filter element is depressurized, so that the air conditioning filter element can be cleaned.

2. The automotive air conditioning filter element sensor assembly according to claim 1, characterized in that: The bottom end of the heat-conducting block (306) is configured as a spherical surface, and a plurality of air-conducting grooves (307) are arranged around the lower surface of the heat-conducting block (306), and the air-conducting grooves (307) are arranged as an arc-shaped structure. A plurality of heat-conducting rods (308) are fixedly arranged on the upper surface of the heat-conducting block (306), and the heat-conducting rods (308) are arranged inside the movable column (305).

3. The automotive air conditioning filter element sensor assembly according to claim 1, characterized in that: The second height position is higher than the first height position, and the third height position is lower than the first height position.

4. The automotive air conditioning filter element sensor assembly according to claim 1, characterized in that: A mounting cover (314) is fixedly provided at the top end of the mounting tube (301), a plurality of adjusting screws (315) are penetrated through the lower surface of the mounting cover (314), an adjusting seat (316) is fixedly provided at the bottom end of the first pressure sensor (302), a plurality of screw holes (317) are penetrated through the upper surface of the adjusting seat (316), and the screw holes (317) correspond to the adjusting screws (315), an adjusting gear (318) is fixedly provided at the top end of the adjusting screw (315), a driving gear (319) is provided between the plurality of adjusting gears (318), and the driving gear (319) is arranged inside the mounting cover (314), an adjusting portion (320) is fixedly provided in the middle of the upper surface of the driving gear (319), and the adjusting portion (320) is arranged above the mounting cover (314).

5. The automotive air conditioning filter element sensor assembly according to claim 1, characterized in that: Both ends of the fixed tube (102) are movably provided with connection seats (103) via bearings, a central control panel (104) is fixedly provided in the middle of the outer side of the support seat (101), and a communication interface is provided at the bottom end of the central control panel (104).

6. The automotive air conditioning filter element sensor assembly according to claim 1, characterized in that: An observation window (205) is provided through the middle portion of the outer side of the air inlet pipe (201).

7. A working method of an automobile air conditioning filter element sensor assembly, the working method being applicable to the automobile air conditioning filter element sensor assembly according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Equipment installation: install two sets of sensor components in the pipeline of the automobile air conditioner, and install the two sets of sensor components at both ends of the automobile air conditioner filter element respectively; Step 2: Airflow detection: the air first passes through a set of sensor components, which detect the air flow rate. Then, the air passes through the car air conditioning filter and reaches another set of sensor components, which detects the air flow rate again. Step 3: Data comparison: By comparing the detection data of the two sets of sensor components, the blockage status of the air conditioning filter can be obtained. The data comparison results are transmitted to the car central control through the data wire. When the difference between the two sets of data is large, the car air conditioning filter is seriously blocked, and the filter self-cleaning function is activated to clean the filter. Step 4: Air quality detection. When the air passes through the sensor assembly, the laser transmitter and laser receiver in the sensor assembly cooperate to detect the air quality and transmit the air quality detection data to the car's central control. The air quality detection data can be used as an auxiliary judgment of the blockage condition of the air conditioning filter.

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