Air volume detection device and method

Abstract

This invention relates to the field of airflow detection technology and provides an airflow detection device, including a housing with an inlet and outlet at the top and a cover hinged to the top of the housing to block the inlet and outlet; a U-shaped frame disposed inside the housing, with a cover-opening mechanism mounted on the U-shaped frame for opening and closing the cover; a reciprocating screw rotatably mounted on the U-shaped frame, with a first slider sleeved on the reciprocating screw, the bottom of the first slider being slidably connected to the U-shaped frame; an airflow sensor for detecting the airflow of a hair dryer fixedly mounted on the first slider; and a lifting mechanism mounted on the housing for housing the airflow sensor. The airflow detection device and method provided by this solution solve the problem that existing airflow detection devices are prone to dust accumulation due to long-term exposure of the airflow sensor, which can adversely affect the airflow detection data of the hair dryer.

Description

Technical Field

[0001] This invention belongs to the field of air volume detection technology, and particularly relates to an air volume detection device and method. Background Technology

[0002] Hair dryers, as a type of small household or commercial appliance used to quickly dry hair, are often called hair dryers or hair dryers. Air volume, as a core indicator for measuring the volume of air blown out per unit time, not only directly determines the drying speed and user comfort, but is also one of the key performance and safety requirements that hair dryers must meet. Air volume testing can verify whether a product meets the legal minimum performance standards, thereby protecting consumer rights.

[0003] Currently, the airflow of hair dryers is mostly detected using dedicated airflow detection devices. Although existing airflow detection devices can perform basic detection functions, the airflow sensors used for detection are exposed for a long time and are not effectively protected even during non-use periods. This makes it easy for dust to accumulate on their surface, which can adversely affect the accuracy of the airflow detection data. Summary of the Invention

[0004] This invention provides an airflow detection device and method, aiming to solve the problem mentioned in the background art that existing airflow detection devices are prone to dust accumulation due to long-term exposure of the airflow sensor, which can adversely affect the airflow detection data of the dryer.

[0005] To solve the above problems, the present invention is implemented as follows: an airflow detection device, comprising: a housing, wherein the top of the housing has an inlet and outlet, and the top of the housing is hinged with a cover for blocking the inlet and outlet; a U-shaped frame disposed inside the housing, wherein an opening mechanism for opening and closing the cover is mounted on the U-shaped frame, a reciprocating screw is rotatably mounted on the U-shaped frame, and a first slider is driven and sleeved on the reciprocating screw, the bottom of the first slider being slidably connected to the U-shaped frame; an airflow sensor for detecting the airflow of a hair dryer is fixedly mounted on the first slider; and a lifting mechanism assembled on the housing for housing the airflow sensor.

[0006] Preferably, the lifting mechanism includes: a first rotating shaft rotatably mounted on the housing, a first bevel gear fixedly sleeved on the first rotating shaft; a servo motor disposed on one side of the housing, the output shaft of the servo motor being fixedly connected to one end of the first rotating shaft; a support block fixedly mounted on the inner wall of one side of the housing, a first screw rotatably mounted on the support block, a connecting block threaded onto the first screw, a first limiting block fixedly mounted on the connecting block, the first limiting block being slidably connected to a groove on the housing; a bracket fixedly mounted on the connecting block, the top of the bracket being fixedly connected to the bottom of the U-shaped frame; a first bevel gear fixedly sleeved on the first rotating shaft; a second bevel gear fixedly mounted on the bottom end of the first screw, the second bevel gear meshing with the first bevel gear; a smooth rod rotatably mounted on the inner wall of the top of the housing, the bottom end of the smooth rod being fixedly connected to the top end of the first screw; and a spring slidably sleeved on the smooth rod, the top of the spring being fixedly connected to the inner wall of the top of the housing.

[0007] Preferably, the airflow detection device further includes a clamping mechanism installed on the housing, the clamping mechanism being used to fix the hair dryer.

[0008] Preferably, the clamping mechanism includes: a first U-shaped plate fixedly installed on the top of the housing, with a second screw rotatably mounted on the first U-shaped plate; a first slide rod fixedly installed on the first U-shaped plate, with a second slider slidably mounted on the first slide rod, the second slider being threadedly connected to the second screw; a second U-shaped plate fixedly installed on the top of the second slider, with a third screw rotatably mounted on the second U-shaped plate; a second slide rod fixedly installed on the second U-shaped plate, with a third slider slidably mounted on the second slide rod, the third slider being threadedly connected to the third screw; a fixing frame welded to the third slider, with a first clamping block fixedly mounted on the fixing frame; a limiting rod fixedly installed on the top of the first clamping block, with a second clamping block slidably mounted on the limiting rod; and a top plate fixedly installed on the top of the limiting rod, with a fourth screw threadedly mounted on the top plate, the bottom end of the fourth screw being rotatably connected to the top of the second clamping block.

[0009] Preferably, the opening mechanism includes: a third U-shaped plate fixedly installed at the bottom of the U-shaped frame, a push rod fixedly installed at the top of the third U-shaped plate, the push rod being slidably connected to a round hole on the box body; and a pull rope slidably installed on the box body, the top end of the pull rope being fixedly connected to the bottom of the cover body, and the bottom end of the pull rope being fixedly connected to the top of the third U-shaped plate.

[0010] Preferably, a knob is fixedly installed at one end of the second screw, the third screw and the fourth screw, and a stop is fixedly installed on the top of the box body, the stop being used to block the cover.

[0011] Preferably, a cabinet is fixedly installed on one side of the housing, and the cabinet is provided with a storage slot for storing the hair dryer to be tested for airflow.

[0012] Preferably, the second clamp and the first clamp are provided with V-grooves on the side of each other, and an anti-slip pad for fixing the hair dryer is fixedly installed on the V-grooves.

[0013] Preferably, a support base for supporting a servo motor is fixedly installed on one side of the housing, and the top of the support base is fixedly connected to the bottom of the servo motor.

[0014] The present invention also provides a method for using an airflow detection device, comprising the following steps: Step 1: Preparation. Place several hair dryers requiring airflow testing into the storage slots on the cabinet. Then, start the servo motor. The servo motor will drive the first rotating shaft to rotate, which in turn drives the first bevel gear. The first bevel gear, through the second bevel gear, drives the first screw to rotate on the support block. At this time, the smooth rod connected to the first screw will rotate synchronously on the inner wall of the top of the cabinet. Under the rotation of the first screw, the connecting block can be driven to move vertically until the connecting block disengages from the first screw and compresses the spring. During the movement, the first limit block fixed to the connecting block will also move synchronously in the slide groove. The connecting block slides in the middle to ensure stable movement. The connecting block will drive the bracket to move vertically, and the bracket will drive the U-shaped frame to move vertically. This will allow the air volume sensor to be moved out of the inlet and outlet at the top of the box, exposing the air volume sensor to the outside of the box. During the process of exposing the air volume sensor to the outside of the box, the U-shaped frame will simultaneously drive the third U-shaped plate to move vertically. The third U-shaped plate will drive the push rod to move upward and push the cover, causing the cover to rotate on the box, thereby opening the cover from the inlet and outlet and removing the obstruction to the inlet and outlet. At this time, the pull rope fixed between the third U-shaped plate and the cover will become looser. Step 2: Fixing the work. Take out a hair dryer that needs to be tested for airflow from the storage slot, and place it between the first clamp and the second clamp. Then, turn the fourth screw. The fourth screw will drive the second clamp to slide vertically on the limit rod, so that the second clamp gradually moves closer to the first clamp, and the anti-slip pads on the first and second clamps can firmly fix the hair dryer. Step 3: Adjustment. According to the testing requirements, the distance between the hair dryer and the airflow sensor needs to be adjusted. During adjustment, rotate the second screw. The second screw will drive the second slider to slide on the first slide rod, which will in turn drive the fixing frame to move back and forth, thereby adjusting the distance between the hair dryer and the airflow sensor. After the distance adjustment is completed, if it is necessary to adjust the vertical position of the hair dryer, the third screw needs to be rotated by hand. The third screw will drive the third slider to slide on the second slide rod, which will in turn drive the fixing frame to move up and down, thereby adjusting the vertical position of the hair dryer so that the hair dryer can perform testing in the corresponding position. Step 4: Testing. Power on and start the hair dryer. The air blown out by the hair dryer will come into contact with the airflow sensor, which can detect the airflow of the hair dryer. Based on the detected data, you can easily know the performance of the hair dryer. Step 5: Finishing Operation. After completing the airflow test of the dryer, the servo motor is started in reverse. The servo motor will drive the first rotating shaft to reverse, which in turn drives the first bevel gear to reverse. The first bevel gear, through the second bevel gear, drives the first screw and the guide rod to reverse. At this time, under the action of the spring, the connecting block can quickly connect with the first screw, allowing the first screw to drive the connecting block to move downwards. At the same time, the first limit block fixed to the connecting block will also slide synchronously in the slide groove. The connecting block will drive the bracket to move downwards, and the bracket will drive the U-shaped frame to move downwards, thereby increasing the airflow. The sensor moves from the inlet / outlet to the inside of the housing, storing the airflow sensor inside. During this process, the U-shaped frame simultaneously moves the third U-shaped plate downwards. The third U-shaped plate then moves the push rod downwards and into the housing. The downward movement of the third U-shaped plate also tightens the pull rope, allowing it to pull the cover. This pulling action causes the cover to rotate in the opposite direction on the housing, thus closing the cover over the inlet / outlet and blocking it. At this point, the airflow sensor is in a sealed environment.

[0015] Compared with related technologies, the air volume detection device and method provided by the present invention have the following beneficial effects: Compared with existing technologies, the airflow detection device and method provided in this solution, through the use of a lifting mechanism, can not only remove the airflow sensor used to detect the airflow of the hair dryer from the housing, but also store the airflow sensor back into the housing when the device is not in use. During the process of removing and storing the airflow sensor, the cover opening mechanism will simultaneously drive the cover to open and close, so that the airflow sensor can be in a sealed environment when not in use, to prevent the influence of external dust and prevent dust accumulation from affecting the accuracy of the airflow sensor in subsequent detection processes. This effectively solves the problem that existing airflow detection devices are prone to dust accumulation due to long-term exposure of the airflow sensor, which can easily have an adverse effect on the airflow detection data of the hair dryer. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural schematic diagram of an airflow detection device provided by the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of an airflow detection device provided by the present invention; Figure 3 This is a schematic diagram of the assembly structure of the clamping mechanism in this invention; Figure 4 This is a schematic diagram of the front cross-sectional structure of an airflow detection device provided by the present invention; Figure 5 This is a three-dimensional structural diagram of the support in this invention; Figure 6 This is a schematic diagram of the assembly structure of the rectangular rod, column and circular block in this invention; Figure 7 for Figure 4 An enlarged structural diagram of part A shown in the figure; Figure 8 for Figure 4 An enlarged structural diagram of part B shown in the figure; Figure 9 for Figure 4 An enlarged structural diagram of section C shown in the figure; Figure 10 for Figure 4 An enlarged structural diagram of part D shown in the figure; Figure 11 for Figure 4 An enlarged structural diagram of part E shown in the figure; Figure 12 for Figure 11 An enlarged structural diagram of part F shown in the figure; Figure 13 for Figure 12 The diagram shows an enlarged view of part G.

[0017] Reference numerals: 1. Housing; 2. Cover; 3. U-shaped frame; 4. Reciprocating screw; 5. First slider; 6. Air volume sensor; 7. First rotating shaft; 8. Servo motor; 9. Support block; 10. First screw; 11. Connecting block; 12. First limiting block; 13. Bracket; 14. First bevel gear; 15. Second bevel gear; 16. Smooth rod; 17. Spring; 18. First U-shaped plate; 19. Second screw; 20. First slide bar; 21. Second slider; 22. Second U-shaped plate; 23. Third screw; 24. Second slide bar; 25. Third slider; 26. Fixing frame; 27. First clamping block; 28. Limiting rod; 29. ​​Second clamping block; 30. Top plate; 31. Fourth screw; 32. Anti-slip pad; 33. Third U-shaped plate; 34. Shaped plate; 35. Push rod; 36. Pull rope; 37. Stop block; 38. Cabinet body; 39. Shell; 40. Sleeve; 41. Third bevel gear; 42. Fourth bevel gear; 43. Rectangular rod; 44. Fifth bevel gear; 45. Sixth bevel gear; 46. Column; 47. Horizontal plate; 48. Round block; 49. Connecting rod; 50. Second limit block; 51. Fixing plate; 52. Round tube; 53. Annular airbag; 54. Annular velvet; 55. Annular cloth; 56. Fixing cover; 57. Positioning block; 58. Mounting block; 59. Rectangular block; 60. Rack; 61. Gear; 62. Inflation pipe; 63. Deflator pipe; 64. Support rod; 65. Sliding sleeve; 66. Crossbar; 67. Threaded block; 68. Round cover. Detailed Implementation

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] This invention provides an airflow detection device, such as... Figure 1-13 As shown, the airflow detection device includes: a housing 1, with an inlet and outlet at the top of the housing 1, and a cover 2 hinged to the top of the housing 1 to block the inlet and outlet; a U-shaped frame 3 disposed inside the housing 1, with an opening mechanism for opening and closing the cover 2 mounted on the U-shaped frame 3, a reciprocating screw 4 rotatably mounted on the U-shaped frame 3, and a first slider 5 drivenly mounted on the reciprocating screw 4, the bottom of the first slider 5 being slidably connected to the U-shaped frame 3; an airflow sensor 6 fixedly mounted on the first slider 5 for detecting the airflow of the hair dryer; and a lifting mechanism mounted on the housing 1 for housing the airflow sensor 6.

[0020] In this embodiment, when using the device, the hair dryer to be tested is fixed to the top of the housing 1. After the fixing operation is completed, the lifting mechanism can be used to move the airflow sensor 6 from the inlet / outlet at the top of the housing 1, exposing the airflow sensor 6 to the outside of the housing 1. During the process of the airflow sensor 6 being exposed to the outside of the housing 1, the cover opening mechanism will operate simultaneously, driving the cover 2 to rotate on the housing 1, thereby opening the cover 2 from the inlet / outlet, removing the obstruction to the inlet / outlet, allowing the airflow sensor 6 to be smoothly moved out from the inlet / outlet at the top of the housing 1. After being moved out, the hair dryer can be powered on and started. The air blown out by the hair dryer will come into contact with the airflow sensor 6, allowing the airflow sensor 6 to detect the airflow of the hair dryer. Based on the detected data... The performance of the hair dryer can be easily determined. After the hair dryer is tested, the lifting mechanism is activated in reverse to retract the airflow sensor 6 from the inlet / outlet into the housing 1. During the process of retracting the airflow sensor 6 into the housing 1, the cover opening mechanism will simultaneously drive the cover 2 to rotate in the reverse direction on the housing 1, thereby closing the cover 2 on the inlet / outlet and blocking it. At this time, the airflow sensor 6 will be in a sealed environment and will not be affected by external dust, thus preventing dust accumulation from affecting the accuracy of the airflow sensor 6 in subsequent testing. This effectively solves the problem that existing airflow detection devices are prone to dust accumulation due to long-term exposure of the airflow sensor, which can adversely affect the airflow detection data of the hair dryer.

[0021] In a further preferred embodiment of the present invention, the lifting mechanism includes: a first rotating shaft 7 rotatably mounted on the housing 1, with a first bevel gear 14 fixedly sleeved on the first rotating shaft 7; a servo motor 8 disposed on one side of the housing 1, the output shaft of the servo motor 8 being fixedly connected to one end of the first rotating shaft 7; a support block 9 fixedly mounted on the inner wall of one side of the housing 1, with a first screw 10 rotatably mounted on the support block 9, a connecting block 11 threadedly mounted on the first screw 10, and a first limiting block 12 fixedly mounted on the connecting block 11, the first limiting block 12 sliding with a groove on the housing 1. Connections include: a bracket 13 fixedly installed on the connecting block 11, the top of the bracket 13 being fixedly connected to the bottom of the U-shaped frame 3; a first bevel gear 14 fixedly sleeved on the first rotating shaft 7; a second bevel gear 15 fixedly installed at the bottom end of the first screw 10, the second bevel gear 15 meshing with the first bevel gear 14; a smooth rod 16 rotatably installed on the inner wall of the top of the housing 1, the bottom end of the smooth rod 16 being fixedly connected to the top end of the first screw 10; and a spring 17 slidably sleeved on the smooth rod 16, the top of the spring 17 being fixedly connected to the inner wall of the top of the housing 1.

[0022] In this embodiment, the lifting mechanism is used to house the airflow sensor 6. When the airflow sensor 6 is needed to detect the dryer, the servo motor 8 is activated. The servo motor 8 drives the first rotating shaft 7 to rotate, which in turn drives the first bevel gear 14 to rotate. The first bevel gear 14, through the second bevel gear 15, drives the first screw 10 to rotate on the support block 9. At this time, the guide rod 16 connected to the first screw 10 rotates synchronously on the inner wall of the top of the housing 1. Under the rotation of the first screw 10, the connecting block 11 can be driven to move vertically until the connecting block 11 disengages from the first screw 10 and compresses the spring 17. During the movement... In the process, the first limiting block 12, which is fixed to the connecting block 11, also slides synchronously in the slide groove to ensure the stable movement of the connecting block 11. The connecting block 11 drives the bracket 13 to move vertically, and the bracket 13 drives the U-shaped frame 3 to move vertically. This allows the air volume sensor 6 to be moved out from the inlet and outlet at the top of the housing 1, exposing the air volume sensor 6 to the outside of the housing 1. During the process of the air volume sensor 6 being exposed to the outside of the housing 1, the cover opening mechanism operates synchronously, causing the cover 2 to rotate on the housing 1, thereby opening the cover 2 from the inlet and outlet, removing the obstruction to the inlet and outlet, and allowing the air volume sensor 6 to be smoothly moved out from the inlet and outlet at the top of the housing 1. When the device is finished being used and the air volume sensor 6 needs to be stored, the servo motor 8 is started in reverse. The servo motor 8 will drive the first rotating shaft 7 to rotate in reverse, which in turn will drive the first bevel gear 14 to rotate in reverse. The first bevel gear 14 will then drive the first screw 10 and the guide rod 16 to rotate in reverse via the second bevel gear 15. At this time, under the action of the spring 17, the connecting block 11 can be quickly connected to the first screw 10, allowing the first screw 10 to drive the connecting block 11 to move downward. At this time, the first limiting block 12, which is fixed to the connecting block 11, will also slide synchronously in the slide groove. The connecting block 11 will drive the bracket 13 to move downward, and the bracket 13 will drive the U-shaped frame. 3. Moving downwards allows the airflow sensor 6 to be moved from the inlet / outlet to the inside of the housing 1, where it is stored. During this process, the cover opening mechanism simultaneously rotates the cover 2 in the opposite direction on the housing 1, thus closing the cover 2 over the inlet / outlet and blocking it. In this sealed environment, the airflow sensor 6 is protected from external dust, preventing dust accumulation from affecting its accuracy in subsequent detection processes. This provides good protection, ensuring the airflow sensor 6 remains clean regardless of how long the device is out of service.

[0023] In a further preferred embodiment of the present invention, the airflow detection device further includes a clamping mechanism installed on the housing 1, the clamping mechanism being used to fix the hair dryer.

[0024] In this embodiment, the hair dryer to be tested can be fixed by using a clamping mechanism to ensure the stability of the hair dryer during the testing process.

[0025] In a further preferred embodiment of the present invention, the clamping mechanism includes: a first U-shaped plate 18 fixedly installed on the top of the housing 1, with a second screw 19 rotatably mounted on the first U-shaped plate 18; a first slide rod 20 fixedly installed on the first U-shaped plate 18, with a second slider 21 slidably mounted on the first slide rod 20, the second slider 21 being threadedly connected to the second screw 19; a second U-shaped plate 22 fixedly installed on the top of the second slider 21, with a third screw 23 rotatably mounted on the second U-shaped plate 22; and a second screw 23 fixedly installed on the second U-shaped plate 22. The system includes a slide bar 24, on which a third slider 25 is slidably mounted, and the third slider 25 is threadedly connected to the third screw 23; a fixing frame 26 welded to the third slider 25, on which a first clamping block 27 is fixedly mounted; a limiting rod 28 fixedly mounted on the top of the first clamping block 27, on which a second clamping block 29 is slidably mounted; and a top plate 30 fixedly mounted on the top of the limiting rod 28, on which a fourth screw 31 is threadedly mounted, and the bottom end of the fourth screw 31 is rotatably connected to the top of the second clamping block 29.

[0026] In this embodiment, when using the clamping mechanism, the hair dryer to be tested for airflow is placed between the first clamping block 27 and the second clamping block 29. Then, the fourth screw 31 is rotated, causing the second clamping block 29 to slide vertically on the limiting rod 28, gradually bringing the second clamping block 29 closer to the first clamping block 27. This allows the first clamping block 27 and the second clamping block 29 to firmly fix the hair dryer, making the fixing convenient and quick. After fixing, the distance between the hair dryer and the airflow sensor 6 can be adjusted according to the testing requirements. During adjustment, the second screw 1 is rotated. 9. The second screw 19 will drive the second slider 21 to slide on the first slide bar 20, which will in turn drive the fixed frame 26 to move back and forth, thereby adjusting the distance between the hair dryer and the air volume sensor 6. If it is necessary to adjust the vertical position of the hair dryer, the third screw 23 will be turned by hand. The third screw 23 will drive the third slider 25 to slide on the second slide bar 24. The third slider 25 will drive the fixed frame 26 to move up and down, thereby adjusting the vertical position of the hair dryer, so that the hair dryer can be tested in the corresponding position, which can meet the testing needs of various hair dryers.

[0027] In a further preferred embodiment of the present invention, the opening mechanism includes: a third U-shaped plate 33 fixedly installed at the bottom of the U-shaped frame 3, a push rod 34 fixedly installed at the top of the third U-shaped plate 33, the push rod 34 being slidably connected to a round hole on the box body 1; and a pull rope 35 slidably installed on the box body 1, the top end of the pull rope 35 being fixedly connected to the bottom of the cover body 2, and the bottom end of the pull rope 35 being fixedly connected to the top of the third U-shaped plate 33.

[0028] In this embodiment, the lid opening mechanism is used to open and close the lid 2. When the servo motor 8 drives the U-shaped frame 3 to move vertically, the U-shaped frame 3 will synchronously drive the third U-shaped plate 33 to move vertically. The third U-shaped plate 33 will drive the push rod 34 to move upward and push the lid 2, causing the lid 2 to rotate on the housing 1, thereby opening the lid 2 from the inlet and outlet, removing the obstruction to the inlet and outlet. At this time, the pull rope 35 fixed between the third U-shaped plate 33 and the lid 2 will become relatively loose. After the airflow detection of the hair dryer is completed, the servo motor 8 is started in reverse. The reverse start of the servo motor 8 will drive the U-shaped frame 3. As the U-shaped frame 3 moves downward, the third U-shaped plate 33 moves downward, which in turn moves the push rod 34 downward and into the interior of the housing 1. The downward movement of the third U-shaped plate 33 also tightens the pull rope 35, allowing it to pull the cover 2. Under this pulling action, the cover 2 can rotate in the opposite direction on the housing 1, thus covering the inlet and outlet and blocking them. This allows the air volume sensor 6, which enters the housing 1, to be in a sealed environment, preventing dust from accumulating on its surface due to prolonged disuse.

[0029] In a further preferred embodiment of the present invention, a knob is fixedly installed at one end of the second screw 19, the third screw 23 and the fourth screw 31, and a stop block 36 is fixedly installed on the top of the housing 1, the stop block 36 being used to block the cover 2.

[0030] In this embodiment, the use of knobs allows the testing personnel to easily rotate the second screw 19, the third screw 23, and the fourth screw 31 to fix and adjust the position of the air volume sensor 6.

[0031] In a further preferred embodiment of the present invention, a cabinet 37 is fixedly installed on one side of the housing 1, and the cabinet 37 is provided with a storage slot for storing a hair dryer to be tested for airflow.

[0032] In this embodiment, by using the storage slot, several hair dryers to be tested can be stored in the cabinet 37, so that after the airflow test of one hair dryer is completed, the next hair dryer to be tested can be retrieved quickly and easily.

[0033] In a further preferred embodiment of the present invention, a V-groove is provided on the side of the second clamping block 29 and the first clamping block 27 that are close to each other, and an anti-slip pad 32 for fixing the hair dryer is fixedly installed on the V-groove.

[0034] In this embodiment, the use of anti-slip pad 32 can improve the fixing effect of the first clamp 27 and the second clamp 29 on the hair dryer, so as to prevent slippage and keep the hair dryer stable during the air volume detection process.

[0035] In a further preferred embodiment of the present invention, a support base for supporting the servo motor 8 is fixedly installed on one side of the housing 1, and the top of the support base is fixedly connected to the bottom of the servo motor 8.

[0036] In this embodiment, by using a support base, the servo motor 8 can be stably fixed to one side of the housing 1, so that the servo motor 8 remains stable during use.

[0037] To further improve the performance of this device, in addition to the above-mentioned solutions, this solution also includes the following embodiments: In another embodiment of the present invention, the same fine-tuning mechanism for moving the air volume sensor 6 is installed on the housing 1 and the U-shaped frame 3. The fine-tuning mechanism includes: a housing 38 fixedly installed on one side of the U-shaped frame 3, with a sleeve 39 rotatably installed on the housing 38; a third bevel gear 40 fixedly installed on one end of the reciprocating screw 4; a fourth bevel gear 41 fixedly sleeved on the sleeve 39, the fourth bevel gear 41 meshing with the third bevel gear 40; a rectangular rod 42 slidably installed on the sleeve 39, with a column 45 fixedly installed at the top of the rectangular rod 42, the column 45 being rotatably connected to the top inner wall of the housing 1; a fifth bevel gear 43 fixedly sleeved on the first rotating shaft 7; and a sixth bevel gear 44 fixedly installed at the bottom end of the rectangular rod 42, the sixth bevel gear 44 meshing with the fifth bevel gear 43.

[0038] In this embodiment, when the servo motor 8 drives the first rotating shaft 7 to rotate, the first rotating shaft 7 drives the fifth bevel gear 43 to rotate. The fifth bevel gear 43 drives the rectangular rod 42 to rotate through the sixth bevel gear 44. At this time, the column 45 connected to the rectangular rod 42 will rotate synchronously on the top inner wall of the housing 1. The rectangular rod 42 drives the sleeve 39 to rotate on the housing 38. The sleeve 39 drives the fourth bevel gear 41 to rotate. The fourth bevel gear 41 drives the reciprocating screw 4 to rotate through the third bevel gear 40. The reciprocating screw 4 drives the first slider 5 to move back and forth on the U-shaped frame 3, so that the first slider 5 can drive the air volume sensor 6 to adjust left and right. Thus, during the air volume detection process of the dryer, the air volume sensor can be adjusted. The left and right positions of the device 6 enable multi-point detection of the airflow of the hair dryer, making the detected data more accurate. It should be noted that, driven by the servo motor 8, the U-shaped frame 3 moves vertically, and the housing 38 connected to it synchronously drives the sleeve 39 to slide along the rectangular rod 42. Thus, the movement of the first slider 5 and the airflow sensor 6 will not be affected by the lifting and lowering. When the U-shaped frame 3 rises to the corresponding position, the connecting block 11 will disengage from the first screw 10 and compress the spring 17. At this time, even if the servo motor 8 continues to run, the U-shaped frame 3 and the airflow sensor 6 will not continue to move upward. At the same time, the left and right positions of the airflow sensor 6 can still be adjusted by the servo motor 8 without affecting the position adjustment of the airflow sensor 6, resulting in good performance.

[0039] In another embodiment of the present invention, a circular block 47 is fixedly sleeved on the rectangular rod 42, and a horizontal plate 46 is rotatably mounted on the circular block 47. One side of the horizontal plate 46 is fixedly connected to one side of the inner wall of the box body 1.

[0040] In this embodiment, the circular block 47 and the horizontal plate 46 work together to support the rectangular rod 42, keeping the rectangular rod 42 stable during use. When the rectangular rod 42 rotates, the circular block 47 connected to it will rotate synchronously on the horizontal plate 46.

[0041] In another embodiment of the present invention, a cleaning mechanism for cleaning the air volume sensor 6 is installed on the housing 1. The cleaning mechanism includes: a limiting groove formed on the inner wall of the top of the housing 1, a connecting rod 48 fixedly installed on the inner wall of the limiting groove, a second limiting block 49 slidably installed on the connecting rod 48, the second limiting block 49 being slidably connected to the inner wall of the limiting groove; a fixing plate 50 fixedly installed on the second limiting block 49, a circular tube 51 rotatably installed on the fixing plate 50, an annular airbag 52 fixedly installed on the inner wall of the circular tube 51, an annular velvet cloth 53 for cleaning the air volume sensor 6 being provided on the annular velvet cloth 52, and an annular cloth 54 fixedly sleeved on the annular velvet cloth 53; a fixing cover 55 provided on the circular tube 51 for pressing the annular cloth 54, the fixing cover 55 having a through hole in its center; a positioning block 56 fixedly installed on the outer wall of the circular tube 51; and an mounting block 57 fixedly installed on the fixing cover 55, with bolts 58 slidably installed on the mounting block 57. The bolt 58 is threadedly connected to the threaded groove on the positioning block 56; a rectangular block 59 is fixedly installed on the inner wall of the top of the housing 1, and a rack 60 is fixedly installed on the rectangular block 59; a gear 61 is fixedly sleeved on the round tube 51, and the gear 61 meshes with the rack 60; an inflation tube 62 is fixedly installed on the round tube 51, one end of the inflation tube 62 extends into the interior of the annular airbag 52, and the other end of the inflation tube 62 is provided with an inflation nozzle. The device is equipped with a one-way valve; a vent pipe 63 is fixedly installed on the round tube 51, and a sealing cap is threaded onto the vent pipe 63. One end of the vent pipe 63 extends into the interior of the annular airbag 52; a support rod 64 is fixedly installed at the bottom of the fixing plate 50, and a sliding sleeve 65 is slidably fitted on the support rod 64. A crossbar 66 is fixedly installed on the sliding sleeve 65, and the crossbar 66 is slidably connected to the U-shaped frame 3. One end of the crossbar 66 is fixedly connected to one side of the first slider 5.

[0042] In this embodiment, when the air volume sensor 6 is raised or lowered, it also moves left or right synchronously. During this process, the first slider 5 connected to the air volume sensor 6 synchronously drives the crossbar 66 to slide on the U-shaped frame 3. At the same time, the crossbar 66 also rises or falls, and the crossbar 66 drives the sliding sleeve 65 to slide on the support rod 64. During the sliding process, the sliding sleeve 65 also drives the support rod 64 to move left or right. The support rod 64 drives the fixing plate 50 to move left or right. At this time, the second limiting block 49 fixed to the fixing plate 50 will slide synchronously on the connecting rod 48. The fixing plate 50 will then drive the round tube 51 and the air volume sensor 6 to move left or right synchronously. During the left or right movement, the gear 61 fixedly sleeved on the round tube 51 will move on the rack. The tube 51 rotates on the fixed plate 50, causing the tube 6 to rotate. Thus, each time the airflow sensor 6 is raised or lowered, the annular cloth 53 inside the tube 51 wipes and cleans the airflow sensor 6 as it moves in or out of the housing 1, removing dust from its surface. This ensures the airflow sensor 6 can optimally detect the airflow of the hair dryer, further improving the accuracy of the detection data. Because the annular cloth 53 has an annular airbag 52 on its outer side, it can wipe and clean the airflow sensor 6 with relatively gentle force, resulting in good cleaning. To ensure the cleanliness of the annular cloth 53, it needs to be cleaned regularly. The woven fabric 53 needs to be replaced, such as every two months or every six months. The frequency of replacement depends on the usage frequency of the device. During replacement, rotate bolt 58 to disengage it from the threaded groove on the positioning block 56. After disengagement, the fixing covers 55 at the top and bottom of the round tube 51 can be opened, releasing the pressure on the annular fabric 54. Then, the annular fabric 53 can be manually pulled out from inside the annular airbag 52. A new or cleaned annular fabric 53 is then inserted into the annular airbag 52. The annular fabric 54 fixedly fitted onto the annular fabric 53 is then arranged. After arrangement, the fixing cover 55 is replaced, and the bolt 58 is reversed to thread it into the threaded groove on the positioning block 56 until the fixing cover 55 secures the annular fabric 54. The pressure is applied to the top and bottom edges of the round tube 51, thus completing the replacement of the annular velvet 53. During use, if the annular airbag 52 needs additional gas, an air pump can be connected to the inflation nozzle on the inflation tube 62. Gas can then be pumped into the annular airbag 52 through the inflation tube 62. After replenishment, the air pump can be disconnected from the inflation tube 62. Because the inflation tube 62 is equipped with a one-way valve, gas inside the annular airbag 52 will not be allowed to escape from the inflation tube 62. When the pressure in the annular airbag 52 is too high and needs to be deflated, simply rotate the sealing cap on the deflation tube 63 to allow the gas inside the annular airbag 52 to escape from one end of the deflation tube 63. After venting the gas, simply rotate the sealing cap in the opposite direction.This allows the sealing cap to tightly block the vent pipe 63, preventing air leakage.

[0043] In another embodiment of the present invention, a circular opening is provided on the cover 2, a threaded block 67 is threadedly installed on the circular opening, a circular cover 68 is fixedly installed on the top of the threaded block 67, and an arc-shaped handle is fixedly installed on the top of the circular cover 68.

[0044] In this embodiment, when it is necessary to replace the annular velvet 53, the round cover 68 needs to be rotated using the arc handle first, so that the round cover 68 drives the threaded block 67 to rotate until the threaded block 67 disengages from the round opening on the cover body 2. Then, the personnel can replace the annular velvet 53 from the round opening. After the replacement is completed, the threaded block 67 is screwed onto the round opening by the reverse operation, thereby covering the round opening. The operation is relatively simple, and it is only necessary to simply rotate the round cover 68 using the arc handle.

[0045] The present invention also provides a method for using an airflow detection device, comprising the following steps: Step 1: Preparation. Place several hair dryers requiring airflow testing into the storage slots on cabinet 37. Then, start the servo motor 8. The servo motor 8 will drive the first rotating shaft 7 to rotate, which in turn drives the first bevel gear 14 to rotate. The first bevel gear 14, through the second bevel gear 15, will drive the first screw 10 to rotate on the support block 9. At this time, the smooth rod 16 connected to the first screw 10 will rotate synchronously on the inner wall of the top of the cabinet 1. Under the rotation of the first screw 10, the connecting block 11 can be driven to move vertically until the connecting block 11 disengages from the first screw 10 and compresses the spring 17. During the movement, the first limiting block 12 fixed to the connecting block 11 will also move synchronously. The connecting block 11 slides in the groove to ensure stable movement. The connecting block 11 will drive the bracket 13 to move vertically, and the bracket 13 will drive the U-shaped frame 3 to move vertically. This will allow the air volume sensor 6 to be moved out of the inlet and outlet at the top of the box 1, exposing the air volume sensor 6 to the outside of the box 1. During the process of the air volume sensor 6 being exposed to the outside of the box 1, the U-shaped frame 3 will simultaneously drive the third U-shaped plate 33 to move vertically. The third U-shaped plate 33 will drive the push rod 34 to move upward and push the cover 2, causing the cover 2 to rotate on the box 1, thereby opening the cover 2 from the inlet and outlet and removing the obstruction to the inlet and outlet. At this time, the pull rope 35 fixed between the third U-shaped plate 33 and the cover 2 will become relatively loose. Step 2: Fixing the work. Take out a hair dryer that needs to be tested for airflow from the storage slot, and place it between the first clamp 27 and the second clamp 29. Then, rotate the fourth screw 31. The fourth screw 31 will drive the second clamp 29 to slide vertically on the limit rod 28, so that the second clamp 29 gradually approaches the first clamp 27, thereby enabling the anti-slip pads 32 on the first clamp 27 and the second clamp 29 to firmly fix the hair dryer. Step 3: Adjustment. According to the testing requirements, the distance between the hair dryer and the air volume sensor 6 needs to be adjusted. During adjustment, rotate the second screw 19. The second screw 19 will drive the second slider 21 to slide on the first slide bar 20, which will in turn drive the fixing frame 26 to move back and forth, thereby adjusting the distance between the hair dryer and the air volume sensor 6. After the distance adjustment is completed, if it is necessary to adjust the vertical position of the hair dryer, the third screw 23 needs to be rotated by hand. The third screw 23 will drive the third slider 25 to slide on the second slide bar 24. The third slider 25 will drive the fixing frame 26 to move up and down, thereby adjusting the vertical position of the hair dryer so that the hair dryer can perform testing in the corresponding position. Step 4: Testing. Power on and start the hair dryer. The air blown out by the hair dryer will come into contact with the airflow sensor 6, allowing the airflow sensor 6 to detect the airflow of the hair dryer. Based on the detected data, the performance of the hair dryer can be easily determined. Step 5: Finishing Operation. After completing the airflow test of the hair dryer, the servo motor 8 is started in reverse. The servo motor 8 will drive the first rotating shaft 7 to rotate in reverse, which in turn will drive the first bevel gear 14 to rotate in reverse. The first bevel gear 14 will drive the first screw 10 and the guide rod 16 to rotate in reverse via the second bevel gear 15. At this time, under the action of the spring 17, the connecting block 11 can quickly connect with the first screw 10, allowing the first screw 10 to drive the connecting block 11 to move downward. At this time, the first limiting block 12, which is fixed to the connecting block 11, will also slide synchronously in the slide groove. The connecting block 11 will drive the bracket 13 to move downward, and the bracket 13 will drive the U-shaped frame 3 to move downward, thereby... The air volume sensor 6 can be moved from the inlet / outlet to the inside of the housing 1 and stored inside the housing 1. During the process of storing the air volume sensor 6 inside the housing 1, the U-shaped frame 3 will simultaneously drive the third U-shaped plate 33 to move down. The third U-shaped plate 33 will drive the push rod 34 to move down and enter the inside of the housing 1. The downward movement of the third U-shaped plate 33 will also make the pull rope 35 taut, so that the pull rope 35 can pull the cover 2. Under the pulling action, the cover 2 can be rotated in the opposite direction on the housing 1, so that the cover 2 can be closed on the inlet / outlet to block the inlet / outlet. At this time, the air volume sensor 6 will be in a sealed environment.

[0046] In summary, compared with related technologies, this device, through the use of a lifting mechanism, can not only remove the airflow sensor 6 used to detect the airflow of the hair dryer from the housing 1, but also store the airflow sensor 6 back into the housing 1 when the device is not in use. During the process of removing and storing the airflow sensor 6, the cover opening mechanism will simultaneously drive the cover 2 to open and close, so that the airflow sensor 6 can be in a sealed environment when not in use, to prevent it from being affected by external dust, and to prevent dust accumulation from affecting the accuracy of the airflow sensor 6 in subsequent detection processes. This effectively solves the problem that existing airflow detection devices are prone to dust accumulation due to long-term exposure of the airflow sensor, which can easily have an adverse effect on the airflow detection data of the hair dryer.

[0047] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. An airflow detection device, characterized in that, include: The box has an inlet and outlet at the top, and a cover for covering the inlet and outlet is hinged to the top of the box. A U-shaped frame is installed inside the box, and an opening mechanism for opening and closing the cover is installed on the U-shaped frame. A reciprocating screw is rotatably installed on the U-shaped frame, and a first slider is driven and sleeved on the reciprocating screw. The bottom of the first slider is slidably connected to the U-shaped frame. An airflow sensor is fixedly mounted on the first slider to detect the airflow of the hair dryer. A lifting mechanism for housing the air volume sensor is mounted on the housing.

2. The airflow detection device as described in claim 1, characterized in that, The lifting mechanism includes: A first rotating shaft mounted on the housing is rotatably mounted, and a first bevel gear is fixedly sleeved on the first rotating shaft; A servo motor is installed on one side of the housing, and the output shaft of the servo motor is fixedly connected to one end of the first rotating shaft. A support block is fixedly installed on the inner wall of one side of the box. A first screw is rotatably installed on the support block. A connecting block is threaded on the first screw. A first limiting block is fixedly installed on the connecting block. The first limiting block is slidably connected to a sliding groove on the box. A bracket is fixedly installed on the connecting block, and the top of the bracket is fixedly connected to the bottom of the U-shaped frame; A first bevel gear fixedly sleeved on the first rotating shaft; A second bevel gear is fixedly installed at the bottom end of the first screw, and the second bevel gear meshes with the first bevel gear; Rotate the light rod installed on the inner wall of the top of the box, and fix the bottom end of the light rod to the top end of the first screw; A spring is slidably sleeved on the light rod, and the top of the spring is fixedly connected to the inner wall of the top of the box.

3. The airflow detection device as described in claim 1, characterized in that, The airflow detection device also includes a clamping mechanism installed on the housing, which is used to fix the hair dryer.

4. The airflow detection device as described in claim 3, characterized in that, The clamping mechanism includes: A first U-shaped plate is fixedly installed on the top of the box, and a second screw is rotatably installed on the first U-shaped plate; A first slide rod is fixedly installed on the first U-shaped plate, and a second slider is slidably installed on the first slide rod. The second slider is threadedly connected to the second screw. A second U-shaped plate is fixedly installed on the top of the second slider, and a third screw is rotatably installed on the second U-shaped plate; A second slide rod is fixedly installed on the second U-shaped plate, and a third slider is slidably installed on the second slide rod. The third slider is threadedly connected to the third screw. A fixing frame welded to the third slider, on which a first clamping block is fixedly mounted; A limiting rod is fixedly installed on the top of the first clamping block, and a second clamping block is slidably installed on the limiting rod; A top plate is fixedly installed at the top of the limiting rod, and a fourth screw is threadedly installed on the top plate. The bottom end of the fourth screw is rotatably connected to the top of the second clamping block.

5. The airflow detection device as described in claim 1, characterized in that, The opening mechanism includes: A third U-shaped plate is fixedly installed at the bottom of the U-shaped frame, and a push rod is fixedly installed on the top of the third U-shaped plate. The push rod is slidably connected to a round hole on the box body. A pull rope is slidably installed on the box body, with its top end fixedly connected to the bottom of the cover body and its bottom end fixedly connected to the top of the third U-shaped plate.

6. The air volume detection device as described in claim 4, characterized in that, A knob is fixedly installed at one end of the second screw, the third screw and the fourth screw, and a stop block is fixedly installed on the top of the box body. The stop block is used to block the cover.

7. The air volume detection device as described in claim 1, characterized in that, A cabinet is fixedly installed on one side of the housing, and the cabinet is provided with a storage slot for storing the hair dryer to be tested for airflow.

8. The air volume detection device as described in claim 4, characterized in that, The second clamp and the first clamp are both provided with V-grooves on the side that are close to each other, and anti-slip pads for fixing the hair dryer are fixedly installed on the V-grooves.

9. The air volume detection device as described in claim 2, characterized in that, A support base for supporting a servo motor is fixedly installed on one side of the housing, and the top of the support base is fixedly connected to the bottom of the servo motor.

10. The method of using the airflow detection device according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Preparation. Place several hair dryers requiring airflow testing into the storage slots on the cabinet. Then, start the servo motor. The servo motor will drive the first rotating shaft to rotate, which in turn drives the first bevel gear. The first bevel gear, through the second bevel gear, drives the first screw to rotate on the support block. At this time, the smooth rod connected to the first screw will rotate synchronously on the inner wall of the top of the cabinet. Under the rotation of the first screw, the connecting block can be driven to move vertically until the connecting block disengages from the first screw and compresses the spring. During the movement, the first limit block fixed to the connecting block will also move synchronously in the slide groove. The connecting block slides in the middle to ensure stable movement. The connecting block will drive the bracket to move vertically, and the bracket will drive the U-shaped frame to move vertically. This will allow the air volume sensor to be moved out of the inlet and outlet at the top of the box, exposing the air volume sensor to the outside of the box. During the process of exposing the air volume sensor to the outside of the box, the U-shaped frame will simultaneously drive the third U-shaped plate to move vertically. The third U-shaped plate will drive the push rod to move upward and push the cover, causing the cover to rotate on the box, thereby opening the cover from the inlet and outlet and removing the obstruction to the inlet and outlet. At this time, the pull rope fixed between the third U-shaped plate and the cover will become looser. Step 2: Fixing the work. Take out a hair dryer that needs to be tested for airflow from the storage slot, and place it between the first clamp and the second clamp. Then, turn the fourth screw. The fourth screw will drive the second clamp to slide vertically on the limit rod, so that the second clamp gradually moves closer to the first clamp, and the anti-slip pads on the first and second clamps can firmly fix the hair dryer. Step 3: Adjustment. According to the testing requirements, the distance between the hair dryer and the airflow sensor needs to be adjusted. During adjustment, rotate the second screw. The second screw will drive the second slider to slide on the first slide rod, which will in turn drive the fixing frame to move back and forth, thereby adjusting the distance between the hair dryer and the airflow sensor. After the distance adjustment is completed, if it is necessary to adjust the vertical position of the hair dryer, the third screw needs to be rotated by hand. The third screw will drive the third slider to slide on the second slide rod, which will in turn drive the fixing frame to move up and down, thereby adjusting the vertical position of the hair dryer so that the hair dryer can perform testing in the corresponding position. Step 4: Testing. Power on and start the hair dryer. The air blown out by the hair dryer will come into contact with the airflow sensor, which can detect the airflow of the hair dryer. Based on the detected data, you can easily know the performance of the hair dryer. Step 5: Finishing Operation. After completing the airflow test of the dryer, the servo motor is started in reverse. The servo motor will drive the first rotating shaft to reverse, which in turn drives the first bevel gear to reverse. The first bevel gear, through the second bevel gear, drives the first screw and the guide rod to reverse. At this time, under the action of the spring, the connecting block can quickly connect with the first screw, allowing the first screw to drive the connecting block to move downwards. At the same time, the first limit block fixed to the connecting block will also slide synchronously in the slide groove. The connecting block will drive the bracket to move downwards, and the bracket will drive the U-shaped frame to move downwards, thereby increasing the airflow. The sensor moves from the inlet / outlet to the inside of the housing, storing the airflow sensor inside. During this process, the U-shaped frame simultaneously moves the third U-shaped plate downwards. The third U-shaped plate then moves the push rod downwards and into the housing. The downward movement of the third U-shaped plate also tightens the pull rope, allowing it to pull the cover. This pulling action causes the cover to rotate in the opposite direction on the housing, thus closing the cover over the inlet / outlet and blocking it. At this point, the airflow sensor is in a sealed environment.

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