Diameter detection device for axial flow fan blade

Abstract

The utility model relates to the field of air-conditioning fan manufacturing, in particular to a diameter detection device of an axial-flow fan blade, which comprises a base, a sliding piece, a displacement sensor, a display device and a fan blade rotating seat used for being connected with the axial-flow fan blade in a matched manner, and the base is provided with a guide rail; the sliding piece is in sliding connection with the guide rail, the sliding piece is provided with a detection block, and the detection block can abut against the blade edge of the axial flow fan blade; the fan blade rotating seat is positioned at the end part of the guide rail and is connected with the base; the displacement sensor is connected with the base and can measure the displacement amount of the sliding part, and the display device is connected with the base and is in communication connection with the displacement sensor; the fan blade rotating seat enables the axial-flow fan blade to rotate at a specified position, the sliding piece drives the detection block to slide on the sliding rail, the detection block can abut against the edge of the blade and obtain the displacement of the sliding piece, displacement data of the sliding piece is displayed through the display device, an operator can rapidly obtain diameter data of the axial-flow fan blade, and the measurement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of air conditioner fan manufacturing, and particularly relates to a device for detecting the diameter of an axial flow fan blade. Background Art

[0002] In an air conditioning system, the outdoor unit exchanges heat with the outside through the rotation of a fan, so as to ensure the refrigeration performance of the air conditioner. The fan of the outdoor unit adopts an axial flow fan blade. The rotating shaft of a motor passes through the shaft hole of the axial flow fan blade, and a limiting orifice plate is arranged in the shaft hole. The limiting orifice plate has a through hole, and the diameter of the through hole is smaller than that of the shaft hole. When the motor rotates, it drives the axial flow fan blade to rotate. When the axial flow fan blade is working, it will rotate at a high speed. If the diameter of the fan blade does not meet the design standard, it will affect the air flow during rotation, resulting in problems such as too small air volume and too high noise.

[0003] However, since the axial flow fan blade is produced by extrusion, affected by environmental factors and die errors, the maximum diameter of the axial flow fan blade may exceed the allowable deviation. Currently, the diameter of the axial flow fan blade is detected by a vernier caliper, and the measurement accuracy is difficult to control, resulting in unqualified quality of the axial flow fan blade after shipment and economic losses. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiency of poor accuracy in detecting the diameter of the axial flow fan blade in the prior art, and provide a device for detecting the diameter of the axial flow fan blade.

[0005] The utility model provides a device for detecting the diameter of an axial flow fan blade, including

[0006] a base, and the base is provided with a guide rail;

[0007] a sliding member, the sliding member is slidably connected to the guide rail, the sliding member is provided with a detection block, and the detection block can abut against the edge of the blade of the axial flow fan blade;

[0008] a fan rotating seat for adaptively connecting the axial flow fan blade, the fan rotating seat is located at the end of the guide rail, and the fan rotating seat is connected to the base;

[0009] a displacement sensor and a display device, the displacement sensor is connected to the base, the displacement sensor can measure the displacement of the sliding member, the display device is connected to the base, and the display device is communicatively connected to the displacement sensor.

[0010] A diameter detection device for an axial flow fan blade of the present utility model is provided with a guide rail on the base. By sliding a sliding member on the guide rail, a detection block can be abutted against the edge of the blade of the axial flow fan. The displacement of the sliding member is accurately measured by a displacement sensor. The radius of the axial flow fan is obtained by adding the distance from the displacement zero point to the center point of the axial flow fan to the displacement, and the diameter of the axial flow fan is obtained through conversion. A fan rotating seat is arranged at the end of the guide rail, and the axial flow fan can rotate on the rotating seat. The maximum displacement of the axial flow fan is measured by pushing the axial flow fan to rotate. The displacement of the sliding member can be displayed in real time through a display device, so that the operator can observe more intuitively, realizing the rapid detection of the diameter of the axial flow fan.

[0011] Preferably, the base is provided with a support column, one end of the support column is connected to the display device, and the other end is connected to the base.

[0012] The support column supports the digital display screen to an appropriate height for easy observation by the operator. In some embodiments, the display device is inclined for easy observation by the operator.

[0013] Preferably, the display device includes a digital display screen and a calculator. The digital display screen is connected to the calculator, and the support column is connected to the digital display screen.

[0014] The digital display screen can display the value calculated by the calculator and the displacement of the sliding member in real time. The operator can quickly calculate the diameter of the axial flow fan through the calculator, facilitating the rapid acquisition of the diameter data of the axial flow fan. In an alternative embodiment, the calculator and the digital display screen are integrally formed structural members.

[0015] Preferably, the fan rotating seat includes a base and a rotating shaft. The base is connected to the rotating shaft, the base is connected to the base, and the rotating shaft is rotatably connected to the shaft hole of the axial flow fan. A limiting step is provided on the rotating shaft.

[0016] The base can support the axial flow fan to an appropriate height to avoid interference between the axial flow fan and the guide rail during rotation. By rotatably connecting the rotating shaft to the shaft hole of the axial flow fan, the axial flow fan can rotate smoothly on the fan rotating seat. By abutting the limiting step against the limiting hole plate located in the shaft hole of the axial flow fan, interference of the axial flow fan is avoided.

[0017] Preferably, the base is a cylindrical structural member. The bottom end of the base is connected to the base, and the rotating shaft is provided at the top end of the base. The rotating shaft is arranged along the axis of the base.

[0018] The rotating shaft is arranged along the axis of the cylindrical base, which is more convenient for the base to be arranged at a designated position.

[0019] Preferably, the rotating shaft is rotatably connected to the base, or the rotating shaft is an optical shaft.

[0020] By rotatably connecting the rotating shaft to the base, the axial-flow fan blade can rotate smoothly; the optical shaft can reduce the friction between the rotating shaft and the axial-flow fan blade, facilitating the rotation of the axial-flow fan blade.

[0021] Preferably, the displacement sensor is a strip-shaped resistance strain sensor. The displacement sensor is parallel to the guide rail. The sliding member is slidably connected to the displacement sensor. The length of the displacement sensor is greater than the length of the guide rail. The measurement zero point of the displacement sensor is aligned with the center of the axial-flow fan blade.

[0022] The strip-shaped resistance strain sensor can accurately measure the displacement of the sliding member. The resistance strain sensor measures the displacement change through the change of resistance. By aligning the measurement zero point of the displacement sensor with the center of the axial-flow fan blade, the value measured by the sliding member is the radius of the axial-flow fan blade, facilitating the operator to calculate the diameter of the axial-flow fan blade.

[0023] Preferably, the detection block is arranged on the side of the sliding member close to the fan rotating seat.

[0024] To avoid interference between the sliding member and the blades of the axial-flow fan blade, facilitating the operator to push the sliding member.

[0025] Preferably, the height of the detection block is greater than the height of the fan rotating seat.

[0026] Ensure that the detection block can abut against the edge of the blade of the axial-flow fan blade.

[0027] Preferably, the fan rotating seat is detachably connected to the base.

[0028] By replacing the fan rotating seat for axial-flow fan blades of different specifications, the diameter detection device can be used to detect the diameters of axial-flow fan blades of different specifications.

[0029] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0030] 1. For a diameter detection device of an axial-flow fan blade of the present utility model, a guide rail is arranged on the base. By sliding the sliding member on the guide rail, the detection block can abut against the edge of the blade of the axial-flow fan blade. The displacement sensor accurately measures the displacement of the sliding member. The radius of the axial-flow fan blade is obtained by adding the displacement amount to the distance from the displacement zero point to the center point of the axial-flow fan blade, and the diameter of the axial-flow fan blade is obtained through conversion; a fan rotating seat is arranged at the end of the guide rail, and the axial-flow fan blade can rotate on the rotating seat. By pushing the axial-flow fan blade to rotate, the maximum displacement amount of the axial-flow fan blade is measured; the displacement amount of the sliding member can be displayed in real time through the display device, enabling the operator to observe more intuitively, realizing the rapid detection of the diameter of the axial-flow fan blade.

[0031] 2. The present utility model provides a diameter detection device for an axial flow fan blade. The blade rotating seat enables the axial flow fan blade to rotate at a specified position. The sliding member drives the detection block to slide on the slide rail, enabling the detection block to abut against the edge of the blade. The displacement data of the sliding member is displayed through a display device. The radius of the axial flow fan blade is obtained by adding the distance from the displacement zero point to the center point of the axial flow fan blade to the displacement amount, enabling the operator to quickly obtain the diameter data of the axial flow fan blade, improving the measurement efficiency, and having good economic value and practical value. Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of a diameter detection device for an axial flow fan blade of the present utility model;

[0033] Figure 2 is a schematic structural diagram of the display device of the present utility model.

[0034] Reference numerals in the drawings:

[0035] 1 - base, 2 - guide rail, 3 - sliding member, 4 - detection block, 5 - blade rotating seat, 51 - base, 52 - rotating shaft, 53 - limiting step, 6 - displacement sensor, 7 - display device, 71 - digital display screen, 72 - calculator, 8 - support column, 9 - support foot. Detailed Embodiments

[0036] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model belong to the scope of the present utility model.

[0037] In the description of the specific embodiments of the present utility model, without special explanation, the expression terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the utility model product / device / equipment is commonly used and placed. These orientation or positional relationship terms are only for the convenience of describing the solution of the present utility model or simplifying the description in the specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present utility model.

[0038] In addition, when terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in directions such as "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present utility model.

[0039] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0040] In addition, in the description of the embodiments of the present utility model, "several", "multiple", "a plurality of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation exceeding 9.

[0041] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / restricted, when terms such as "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, screw connection, etc. This kind of connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0042] Embodiment 1

[0043] As Figure 1 - Figure 2 shown, a diameter detection device for an axial flow fan blade includes

[0044] a base 1, and the base 1 is provided with a guide rail 2;

[0045] a sliding member 3, the sliding member 3 is slidably connected to the guide rail 2, the sliding member 3 is provided with a detection block 4, and the detection block 4 can abut against the blade edge of the axial flow fan blade;

[0046] A blade rotating seat 5 for adaptively connecting an axial-flow fan blade, the blade rotating seat 5 is located at the end of the guide rail 2, and the blade rotating seat 5 is connected to the base 1;

[0047] A displacement sensor 6 and a display device 7, the displacement sensor 6 is connected to the base 1, the displacement sensor 6 can measure the displacement of the sliding member 3, the display device 7 is connected to the base 1, and the display device 7 is communicatively connected to the displacement sensor 6.

[0048] A guide rail 2 is provided on the base 1. By sliding the sliding member 3 on the guide rail 2, the detection block 4 can abut against the edge of the blade of the axial-flow fan. The displacement of the sliding member 3 is accurately measured by the displacement sensor 6. The radius of the axial-flow fan is obtained by adding the displacement to the distance from the displacement zero point to the center point of the axial-flow fan, and the diameter of the axial-flow fan is obtained by conversion; A blade rotating seat 5 is provided at the end of the guide rail 2. The axial-flow fan can rotate on the rotating seat. By pushing the axial-flow fan to rotate, the maximum displacement of the axial-flow fan is measured; The displacement of the sliding member 3 can be displayed in real time through the display device 7, so that the operator can observe more intuitively, realizing the rapid detection of the diameter of the axial-flow fan.

[0049] In one or several embodiments, a vertically arranged support column 8 is provided on the bottom plate. The display device 7 is composed of a digital display screen 71 and a calculator 72. The digital display screen 71 and the calculator 72 are fixedly connected. The support column 8 is a quadrangular prism. One end of the support column 8 is fixedly connected to the base 1 and the other end is fixedly connected to the digital display screen 71, so that the digital display screen 71 is supported to a specified height for easy observation by the operator; In some embodiments, the digital display screen 71 is arranged at an angle of 45 degrees for easy observation and operation; In some embodiments, the calculator 72 and the digital display screen 71 are integrally formed structural members; Two display areas are provided on the digital display screen 71. One display area is used to display the value calculated by the calculator 72, and the other display area is used to display the displacement of the sliding member 3; A number of buttons are provided on the calculator 72 for inputting values.

[0050] In one or several embodiments, the blade rotating seat 5 is composed of a base 51 and a rotating shaft 52. The base 51 is connected to the rotating shaft 52, the base 51 is connected to the base 1, and the rotating shaft 52 is rotatably connected to the shaft hole of the axial-flow fan; By adaptively connecting the shaft hole of the axial-flow fan with the rotating shaft 52, the axial-flow fan can rotate smoothly, so that different blades of the axial-flow fan can be measured.

[0051] In an optional embodiment, a limiting step 53 is provided on the rotating shaft 52; By abutting the limiting step 53 against the limiting hole plate in the shaft hole, the axial-flow fan is supported to a specified height to avoid interference of the axial-flow fan.

[0052] In an alternative embodiment, the base 51 is a cylindrical structural member, which is connected to the base 1 through the bottom end of the base 51, so that the base 51 is fixed on the base 1. By providing a rotating shaft 52 at the top end of the base 51 and arranging the rotating shaft 52 along the axis of the rotating shaft 52, the base 51 can better support the axial flow fan blade.

[0053] In an alternative embodiment, the rotating shaft 52 is rotatably connected to the base 51. When the axial flow fan blade rotates, it drives the relative rotation of the rotating shaft 52 and the base 51, so that the axial flow fan blade rotates smoothly. In some embodiments, the rotating shaft 52 is a smooth shaft, and the smooth shaft has a low friction with the axial flow fan blade, so that the axial flow fan blade rotates smoothly.

[0054] In one or more embodiments, the displacement sensor 6 is a strip-shaped resistance strain sensor. The displacement sensor 6 is parallel to the guide rail 2, and the sliding member 3 is slidably connected to the displacement sensor 6. By changing the position of the sliding member 3 on the displacement sensor 6, the resistance of the displacement sensor 6 changes, so as to measure the displacement of the sliding member 3. The length of the displacement sensor 6 is greater than the length of the guide rail 2 to ensure the measuring range.

[0055] In one or more embodiments, the detection block 4 is arranged on the side of the sliding member 3 close to the fan rotating seat 5, which is convenient for the operator to adjust the position of the sliding member 3 and avoid interference between the sliding member 3 and the blades of the axial flow fan.

[0056] In one or more embodiments, the height of the detection block 4 is greater than the height of the fan rotating seat 5 to ensure that the detection block 4 can abut against the edge of the blade of the axial flow fan.

[0057] In one or more embodiments, the fan rotating seat 5 is detachably connected to the base 1. By replacing the fan rotating seat 5 adapted to different specifications of axial flow fan blades, the diameter detection device can be used to measure the diameters of different specifications of axial flow fan blades.

[0058] In one or more embodiments, support angles are provided at the four corners of the bottom of the bottom plate.

[0059] In an alternative embodiment, the detection block 4 and the sliding member 3 are integrally formed structural members.

[0060] By providing the displacement sensor 6 and the digital display screen 71, the displacement sensor 6 is used to measure the displacement of the sliding member, and the digital display screen 71 is used to display the measurement results and calculation results. When measuring, the slider of the guide rail 2 can be pushed to closely abut against the fan rotating seat 5 to zero the displacement sensor 6. Then, the axial flow fan blade is placed on the rotating shaft 52, and the measuring block is pushed to abut against the outermost side of the blade of the axial flow fan. Finally, the axial flow fan blade is rotated, and the maximum value is measured as the displacement. Multiply the measured displacement value by two after adding the radius of the fan rotating seat 5 to obtain the diameter of the axial flow fan blade.

[0061] Example 2

[0062] For the diameter detection device of an axial flow fan blade in this embodiment, by aligning the measurement zero point of the displacement sensor 6 with the center of the axial flow fan blade, the data measured by the displacement sensor 6 is the radius data of the axial flow fan blade.

[0063] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An axial flow fan blade diameter detection device, characterized in that, including a base (1), the base (1) being provided with a guide rail (2); a sliding member (3), the sliding member (3) being slidably connected to the guide rail (2), the sliding member (3) being provided with a detection block (4), the detection block (4) being capable of abutting against the edge of the blade of the axial flow fan; a blade rotating seat (5) for adaptively connecting the axial flow fan, the blade rotating seat (5) being located at the end of the guide rail (2), the blade rotating seat (5) being connected to the base (1); a displacement sensor (6) and a display device (7), the displacement sensor (6) being connected to the base (1), the displacement sensor (6) being capable of measuring the displacement of the sliding member (3), the display device (7) being connected to the base (1), the display device (7) being communicatively connected to the displacement sensor (6).

2. The diameter detection device of an axial flow fan blade according to claim 1, characterized in that, The base (1) is provided with a support column (8), one end of the support column (8) being connected to the display device (7) and the other end being connected to the base (1).

3. The diameter detection device of an axial flow fan blade according to claim 2, characterized in that, The display device (7) includes a digital display screen (71) and a calculator (72), the digital display screen (71) being connected to the calculator (72), the support column (8) being connected to the digital display screen (71).

4. The diameter detection device for an axial flow fan blade according to claim 1, characterized in that, The blade rotating seat (5) includes a base (51) and a rotating shaft (52), the base (51) being connected to the rotating shaft (52), the base (51) being connected to the base (1), the rotating shaft (52) being rotatably connected to the shaft hole of the axial flow fan; a limiting step (53) is provided on the rotating shaft (52).

5. The diameter detection device of an axial flow fan blade according to claim 4, wherein The base (51) is a cylindrical structural member, the bottom end of the base (51) being connected to the base (1), the top end of the base (51) being provided with the rotating shaft (52), the rotating shaft (52) being arranged along the axis of the base (51).

6. The diameter detection device of an axial flow fan blade according to claim 4, characterized in that, The rotating shaft (52) is rotatably connected to the base (51), or, the rotating shaft (52) is an optical shaft.

7. The diameter detection device of an axial flow fan blade according to claim 1, characterized in that, The displacement sensor (6) is a strip-shaped resistance strain sensor, the displacement sensor (6) being parallel to the guide rail (2), the sliding member (3) being slidably connected to the displacement sensor (6), the length of the displacement sensor (6) being greater than the length of the guide rail (2), the measurement zero point of the displacement sensor (6) being aligned with the center of the axial flow fan.

8. A diameter detection device for an axial flow fan blade according to claim 1, characterized in that, The detection block (4) is arranged on one side of the sliding member (3) close to the blade rotating seat (5).

9. The diameter detection device of an axial flow fan blade according to claim 1, characterized in that, The height of the detection block (4) is greater than the height of the blade rotating seat (5).

10. A diameter detection device for an axial flow fan blade according to any one of claims 1-9, characterized in that, The blade rotating seat (5) is detachably connected to the base (1).

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