Axial-flow type fan blade shape correcting device

Abstract

The utility model discloses an axial-flow type fan blade shape correcting device which comprises a base. The assembling component is arranged on the base and is used for assembling a blade frame disc of an axial-flow type fan blade above the base; the blade tip positioning assemblies are arranged on the base and located on the periphery of the assembling assembly at equal angle intervals, and the number of the blade tip positioning assemblies corresponds to that of the axial flow type fan blades. According to the axial-flow type fan blade shape correcting device, the blade frame disc of the axial-flow type fan blade is assembled above the base through the assembling assembly, meanwhile, the blade tip positioning assemblies with the number corresponding to that of the blade tips are used for positioning the blade tips of the axial-flow type fan blade respectively, and therefore the height of the blade tips of the axial-flow type fan blade is corrected.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing air conditioning components, and in particular relates to an axial flow fan blade correction device for ensuring product consistency after the axial flow fan blade is formed. Background Art

[0002] Axial flow blades (or fan blades) are small in size, light in weight, and have high ventilation efficiency. They are widely used in air conditioning devices such as fans, air conditioner outdoor units, and ventilating fans. These devices use the rotation of the blades to push the air in the same direction as the axis to achieve rapid convection of ambient air. Taking the axial flow blades in the air conditioner outdoor unit as an example, their main function is to blow the heat emitted by the condenser to the outside, accelerate the cooling of the condenser, and change the refrigerant from gas to liquid.

[0003] like Figure 1 As shown, the axial flow fan blade 90 includes a blade frame disc 91 (also called a central axis disc) and a plurality of blades 92 extending outward from the outer periphery of the blade frame disc 91. A shaft docking hole 95 for docking with the motor shaft is provided in the center of the blade frame disc 91; the tip and the root of each blade 92 form an inclination angle through a gradual arc surface. During assembly and use, the shaft docking hole 95 in the center of the blade frame disc 91 docks with the motor shaft, and driven by the motor shaft, the entire fan blade 90 rotates, and the lift generated by the rotation of the blades 92 is used to make the air flow in the axial direction.

[0004] Those skilled in the art know that blades are the main structure that affects the efficiency and noise level of axial flow fan blades. Therefore, axial flow fan blades have high production requirements. At present, axial flow fan blades are mostly made of aluminum pressing or ABS plastic injection molding, and most of them have three to eight blade structures. After the axial flow fan blades are just processed, the blades may still produce certain deformations during the static cooling process, which is mainly reflected in the different heights of the blade tips of multiple blades, resulting in the inability to guarantee the consistency of the product. Figure 1 As shown, even if some wind blades are provided with water-pumping rings 94, and the root outer edges of each blade 92 are fixedly connected to the water-pumping rings 94, the problem of the consistency of the tip heights of each blade 92 cannot be eliminated. Moreover, not all fans are suitable for wind blades with water-pumping rings.

[0005] In addition, many fan blade manufacturers currently only inspect the blade tip height by visual inspection, and if there is no obvious difference, the quality inspection will be passed. This can easily lead to a large number of defective axial flow fan blades flowing out, which in turn leads to problems such as high noise and low efficiency when the axial flow fan blades are used in the corresponding fans. For example, after the air conditioner outdoor unit is equipped with axial flow fan blades, it is tested that due to the difference in blade height, abnormal jitter will occur after high-speed operation, which directly affects the operation of the whole machine. Moreover, this type of abnormality is not easy to be discovered during the inspection of incoming parts, and it is a blind spot in the inspection and testing.

[0006] Therefore, how to further correct the formed axial flow fan blades to ensure the standardization and consistency of the products and how to effectively control the outflow of defective products are technical problems that need to be solved urgently. Utility Model Content

[0007] The purpose of the utility model is to provide an axial flow fan blade correction device, aiming to improve the structural standardization and consistency of the axial flow fan blade. The purpose of the utility model is achieved by the following technical solutions:

[0008] An axial flow fan blade correction device, characterized by comprising:

[0009] Base;

[0010] An assembly component is arranged on the base and assembles the blade frame plate of the axial flow fan blade above the base;

[0011] The blade tip positioning components are arranged on the base and are located at equal angles and intervals on the periphery of the assembly component. The number of the blade tip positioning components corresponds to the number of the axial flow fan blades.

[0012] The axial flow fan blade correction device provided by the above technical solution assembles the blade frame plate of the axial flow fan blade above the base through an assembly component, and simultaneously uses a blade tip positioning component corresponding to the number of blade tips to position each blade tip of the axial flow fan blade separately, thereby correcting the blade tip height of the axial flow fan blade so that the height of each blade tip is consistent.

[0013] As a preferred technical solution, the assembly component includes an assembly column for coaxially docking with the rotating shaft docking hole of the blade frame disk.

[0014] In the above preferred solution, the assembly column and the shaft docking hole are coaxially docked, which fully utilizes the structure of the blade rack disk and can quickly and conveniently assemble the blade rack disk of the axial flow fan blade above the base.

[0015] As a preferred technical solution, the assembly column is rotatably arranged on the base.

[0016] In the above preferred solution, the rotation of the assembly column can drive the axial flow fan blades arranged thereon to rotate, so as to facilitate positioning the blade tips on the corresponding blade tip positioning components during the rotation of the axial flow fan blades.

[0017] As a preferred technical solution, the assembly component also includes a first limit column and a second limit column for clamping the blade root of the axial flow fan blade therebetween; the first limit column and the second limit column are arranged in parallel on the side of the assembly column, and the lower ends of the first limit column and the second limit column are transversely connected to the lower part of the assembly column.

[0018] In the above preferred solution, at least one blade root of the axial flow fan blade can be clamped by two limiting columns, and the axial flow fan blade can be further stably assembled above the base.

[0019] As a preferred technical solution, a blade tip contour positioning groove is provided at a predetermined height on the blade tip positioning assembly.

[0020] In the above preferred embodiment, by providing a blade tip contour positioning groove, it is easier for the blade tip to be embedded therein, thereby quickly positioning the blade tip.

[0021] As a preferred technical solution, the blade tip positioning assembly includes a support member and a cover member, one side of the cover member is hinged to one side of the top of the support member, and the blade tip contour positioning groove is arranged between the other side of the cover member and the other side of the top of the support member.

[0022] In the above preferred embodiment, by means of hinged cooperation between the support member and the cover member, the blade tip can be embedded in the blade tip contour positioning groove when the cover member is opened relative to the support member, and then the blade tip can be pressed into the blade tip contour positioning groove when the cover member is closed relative to the support member.

[0023] As a preferred technical solution, the blade tip contour positioning groove includes an upper half groove located on the cover member and a lower half groove located on the support member.

[0024] In the above preferred embodiment, the matching manner of the upper half groove and the lower half groove makes it easier to process and form a blade tip contour positioning groove that matches the blade tip shape.

[0025] As a preferred technical solution, the blade tip positioning assembly is arranged on the base in an adjustable height.

[0026] In the above preferred solution, by uniformly adjusting the height of all blade tip positioning components, various models of axial flow fan blades with different blade tip heights can be accommodated.

[0027] As a preferred technical solution, the axial flow wind blade correction device also includes a bearing plate, which is detachably arranged on the base; the bearing plate includes a central bearing portion and a number of branch bearing portions corresponding to the number of the blade tip positioning components; the assembly component is arranged on the central bearing portion, and the blade tip positioning component is correspondingly arranged on the branch bearing portion.

[0028] In the above preferred scheme, the supporting plate and the assembly components and blade tip positioning components arranged thereon can constitute a kit. Different kits can be paired with axial flow fan blades of different models, and different kits can be installed on the base switchably, thereby improving the flexibility and compatibility of the entire device.

[0029] As a preferred technical solution, the axial flow fan blade correction device also includes a rotation positioning assembly, including a lever laterally connected to the lower part of the assembly column and a lever stopper arranged on the base; the lever drives the assembly column to rotate, and when the lever stops at the lever stopper, the tip of the axial flow fan blade on the assembly column is located in the blade tip contoured positioning groove.

[0030] In the above preferred solution, the rotary positioning assembly can quickly position the blade tip of the axial flow fan blade on the assembly column in the blade tip contour positioning groove.

[0031] As a preferred technical solution, the axial flow fan blade correction device also includes a counterweight block for being placed on the blades of the axial flow fan blade and / or a hot air supply component for blowing hot air to the blades of the axial flow fan blade.

[0032] In the above preferred embodiment, the use of a counterweight block and / or a hot air supply assembly can accelerate the shaping of the axial flow fan blade whose blade tip has been positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A three-dimensional diagram of an axial flow fan blade in the prior art.

[0034] Figure 2 This is a diagram showing the structure of an axial flow fan blade correction device provided in an embodiment of the utility model.

[0035] Figure 3 A three-dimensional diagram of an axial-flow fan blade assembled on an axial-flow fan blade correction device provided in an embodiment of the utility model.

[0036] Figure 4 A side view of an axial-flow fan blade assembled on an axial-flow fan blade correction device provided in an embodiment of the utility model.

[0037] Figure 5 A top view of an axial-flow fan blade assembled on an axial-flow fan blade correction device provided in an embodiment of the utility model.

[0038] Figure 6 A schematic diagram of a blade tip positioning assembly in an open state in an axial flow fan blade correction device provided in an embodiment of the utility model.

[0039] Figure 7 A schematic diagram of a blade tip positioning assembly in a closed state in an axial flow fan blade correction device provided in an embodiment of the utility model.

[0040] Explanation of the accompanying drawings: 10-base, 20-assembly component, 21-assembly column, 22-first limiting column, 23-second limiting column, 30-blade tip positioning assembly, 31-support member, 32-cover member, 33-blade tip contour positioning groove, 332-upper half groove, 331-lower half groove, 40-rotational positioning assembly, 41 lever, 42-lever stopper, 50-bearing plate, 51-center bearing part, 52-branch bearing part, 90-axial flow fan blade, 91-blade frame plate, 92-blade, 921-blade tip. DETAILED DESCRIPTION

[0041] The following is an explanation and description of the technical solution of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiments are only preferred embodiments of the utility model, not all; and under the premise that the technical solutions do not conflict, the technical means of each embodiment can be reasonably and freely combined. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making creative work are all within the protection scope of the utility model.

[0042] In the description of the present utility model, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships that are based on the orientations or relative positional relationships shown in the accompanying drawings, and are intended to facilitate a clear description of the structure of a product or device, and are not used to limit the actual orientation of the product or device during production, use, sales, and the like.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "set", "fix" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] This embodiment takes the correction of a three-blade axial flow fan blade as an example and provides an axial flow fan blade correction device for improving the structural standardization and consistency of the axial flow fan blade. Specifically, the blade tips of the three blades are positioned and corrected so that the blade tips of the three blades are in the same height.

[0047] Combination Figure 2 and Figure 3 As shown, the axial flow fan blade correction device provided in this embodiment includes a base 10, an assembly component 20 and three blade tip positioning components 30. The base 10 is used to be set on a working platform, such as the ground or a desktop. The base 10 is plate-shaped, and an assembly space is provided above it for the assembly component 20 and the blade tip positioning component 30 to be directly or indirectly assembled thereon.

[0048] The assembly component 20 is arranged on the base 10, and is used to assemble the blade frame plate 91 of the axial flow fan blade 90 above the base 10. Three blade tip positioning components 30 are arranged on the base 10, and the three blade tip positioning components 30 are located at equal angles and intervals on the periphery of the assembly component 20. As the name implies, the blade tip positioning component 30 is used to position the blade tip 921 of the blade 92 of the axial flow fan blade 90; and the three blade tip positioning components 30 respectively position a blade tip 921, thereby positioning and correcting the blade tips of the three blades, so that the blade tips of the three blades are consistent in height, combined with Figures 2 to 5 shown.

[0049] Continue to see Figure 2 The assembly component 20 includes an assembly column 21 for coaxially docking with the shaft docking hole of the blade rack plate 91. Generally, the cross section of the shaft docking hole of the blade rack plate 91 is D-shaped, and the cross section of the assembly column 21 in this embodiment is also D-shaped. In this way, when the assembly column and the shaft docking hole are coaxially docked, the structure of the blade rack plate 91 is fully utilized, and the blade rack plate 91 of the axial flow fan 90 can be quickly and conveniently assembled on the base 10.

[0050] The assembly column 21 is preferably rotatably disposed on the base 10. Thus, when the assembly column 21 rotates, the axial flow fan blade 90 disposed thereon can be driven to rotate, so that the blade tip of the axial flow fan blade 90 is positioned on the corresponding blade tip positioning assembly 30 during the rotation process.

[0051] In addition, considering that the single assembly method of the blade rack plate 91 and the assembly column 21 is not stable enough, the assembly component 20 in this embodiment also includes a first limiting column 22 and a second limiting column 23, and the first limiting column 22 and the second limiting column 23 are used to clamp the blade root of the axial flow fan blade 90 therebetween. Specifically, the first limiting column 22 and the second limiting column 23 are arranged in parallel to the side of the assembly column 21, and the lower ends of the first limiting column 22 and the second limiting column 23 are transversely connected to the lower part of the assembly column 21. In this way, the axial flow fan blade 90 can be further stably assembled above the base 10.

[0052] Combination Figure 6 and Figure 7 As shown, a blade tip profiling positioning groove 33 is provided at a predetermined height on the tip positioning assembly 30, into which the blade tip to be positioned is inserted, so as to quickly position the blade tip. Specifically, the blade tip positioning assembly 30 includes a support member 31 and a cover member 32, one side of the cover member 32 is hinged to one side of the top of the support member 31, and the blade tip profiling positioning groove 33 is provided between the other side of the cover member 32 and the other side of the top of the support member 31.

[0053] In this embodiment, the support member 31 and the cover member 32 are hingedly matched, so that when the cover member 32 is opened relative to the support member 31 ( Figure 6 As shown), the blade tip 921 is embedded in the blade tip profiling positioning groove 33, and then when the cover 32 is closed relative to the support member 31, the blade tip 921 is pressed tightly into the blade tip profiling positioning groove 33.

[0054] The blade tip profiling positioning groove includes an upper groove 332 located on the cover 32 and a lower groove 331 located on the support 31. In this embodiment, the blade tip profiling positioning groove 33 matching the blade tip shape is easier to process and form by matching the upper groove and the lower groove.

[0055] In this embodiment, each blade tip positioning assembly 30 is arranged on the base 10 in a height-adjustable manner. By uniformly adjusting the height of all blade tip positioning assemblies, various types of axial flow fan blades with different blade tip heights can be accommodated.

[0056] Continue to see Figure 2The axial flow fan blade correction device provided in this embodiment also includes a bearing plate 50, which is detachably arranged on the base 10; the bearing plate 50 includes a central bearing portion 51 and three branch bearing portions 52. Among them, the number of branch bearing portions 52 corresponds to the number of blade tip positioning assemblies 30 and the number of blades 92. The assembly component 20 described above is arranged on the central bearing portion 51, and the three blade tip positioning assemblies 30 are correspondingly arranged on each branch bearing portion 52. In this way, the bearing plate 50 and the assembly component 20 and blade tip positioning assembly 30 arranged thereon can constitute a kit, different kits can be paired with different models of axial flow fan blades, and different kits can be switchably assembled on the base 10, which improves the flexibility and compatibility of the entire device.

[0057] Combination Figures 2 to 5 As shown, the axial flow fan blade correction device provided in this embodiment also includes a rotation positioning assembly 40, which includes a lever 41 laterally connected to the lower part of the assembly column 21 and a lever stopper 42 arranged on the base 10; the lever 41 drives the assembly column 21 to rotate, and when the lever 41 stops at the lever stopper 42, each blade tip 921 of the axial flow fan blade 90 on the assembly column 21 is respectively located in the corresponding blade tip contour positioning groove 33.

[0058] In addition, the axial flow fan blade correction device provided in this embodiment also includes a counterweight block for placing on the blade of the axial flow fan blade and / or a hot air supply component for blowing hot air to the blade of the axial flow fan blade. The counterweight block and / or the hot air supply component can be used to accelerate the shaping of the axial flow fan blade whose blade tip has been positioned.

[0059] The above embodiments are only intended to fully disclose but not limit the present invention. Any replacement of equivalent technical features based on the creative purpose of the present invention without creative labor should be regarded as the scope disclosed in this application.

Claims

1. An axial flow fan blade correction device, characterized in that: include: Base; An assembly component is arranged on the base and assembles the blade frame plate of the axial flow fan blade above the base; The blade tip positioning components are arranged on the base and are located at equal angles and intervals on the periphery of the assembly component. The number of the blade tip positioning components corresponds to the number of the axial flow fan blades.

2. The axial flow fan blade correction device according to claim 1, characterized in that: The assembly component comprises an assembly column for coaxially docking with the rotating shaft docking hole of the blade frame plate.

3. The axial flow fan blade correction device according to claim 2, characterized in that: The assembly column is rotatably arranged on the base.

4. The axial flow fan blade correction device according to claim 3, characterized in that: The assembly component also includes a first limit column and a second limit column for clamping the blade root of the axial flow fan blade therebetween; the first limit column and the second limit column are arranged in parallel on the side of the assembly column, and the lower ends of the first limit column and the second limit column are laterally connected to the lower part of the assembly column.

5. The axial flow fan blade correction device according to claim 3, characterized in that: The blade tip positioning assembly is arranged on the base in an adjustable height, and a blade tip contour positioning groove is arranged at a position of a predetermined height on the blade tip positioning assembly.

6. The axial flow fan blade correction device according to claim 5, characterized in that: The blade tip positioning assembly comprises a support member and a cover member, one side of the cover member is hinged to one side of the top of the support member, and the blade tip contour positioning groove is arranged between the other side of the cover member and the other side of the top of the support member.

7. The axial flow fan blade correction device according to claim 6, characterized in that: The blade tip contour positioning groove comprises an upper half groove located on the cover member and a lower half groove located on the support member.

8. The axial flow fan blade correction device according to any one of claims 1 to 7, characterized in that: It also includes a bearing plate, which is detachably arranged on the base; the bearing plate includes a central bearing portion and branch bearing portions corresponding in number to the blade tip positioning components; the assembly component is arranged on the central bearing portion, and the blade tip positioning components are correspondingly arranged on the branch bearing portions.

9. The axial flow fan blade correction device according to claim 5, characterized in that: It also includes a rotation positioning assembly, including a lever laterally connected to the lower part of the assembly column and a lever stopper arranged on the base; the lever drives the assembly column to rotate, and when the lever stops at the lever stopper, the tip of the axial flow fan blade on the assembly column is located in the blade tip contoured positioning groove.

10. The axial flow fan blade correction device according to claim 1, characterized in that: The axial flow fan blade correction device also includes a counterweight block for being placed on the blades of the axial flow fan blade and / or a hot air supply component for blowing hot air to the blades of the axial flow fan blade.

Images