Heat treatment high-temperature-resistant anti-deformation fan blade

Abstract

The utility model provides a heat treatment high temperature resistant anti-deformation fan blade, which comprises blades and a connecting rod, the connecting rod is cylindrical, the surface of each blade is a spatial arc surface, each blade is provided with two end parts and two long edges, one end part is narrow and thick and is the root part of the blade, and the other end part is narrow and thick and is the long edge of the blade. The roots of the at least two blades are respectively connected with the end part of the connecting rod, and the at least two blades are arranged around the connecting rod in a surrounding manner; the other end part of the blade is wide and is the tail end of the blade; the two long edges of each blade are bent in the same direction in the dimension of the blade plate face, and the cross section of each blade is in a wing shape. Cooling channels are arranged on the side faces of the blades, and honeycombs are arranged on the lower surfaces of the blades. On the basis of the prior art, the roots of the blades are thickened, and the blades are provided with the cooling channels and the honeycombs, so that the durability of the blades in the thermal cycle process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan blade technical field especially relates to heat treatment high temperature resistant deformation fan blade. BACKGROUND

[0002] The heat treatment high temperature resistant deformation fan blade is a fan blade used in high temperature environment. In high temperature environment, the fan blade can soften and deform. In the working process of the fan blade, the fan blade can be cracked by stress, which can reduce the strength of the fan blade and shorten the service life. SUMMARY

[0003] The utility model discloses a heat treatment high temperature resistant deformation fan blade which solves the problems in the prior art.

[0004] To achieve the above object, the utility model discloses a heat treatment high temperature resistant deformation fan blade, which comprises a blade, a connecting rod, the connecting rod is cylindrical, the surface of the blade is a spatial circular surface, each blade has two end portions and two long edges, one end portion is narrow and thick, which is the root of the blade, the roots of the at least two blades are connected with the end portions of the connecting rod respectively, and the at least two blades are arranged around the connecting rod in a ring shape.

[0005] Preferably, the depth of the honeycomb near the root of the blade is twice the depth of other parts of the honeycomb.

[0006] Preferably, the corners of the blade are rounded.

[0007] Preferably, the root of the blade is fixedly connected with the outer side wall of the connecting rod.

[0008] Preferably, the number of the blades is at least three, and the blades are evenly distributed around the end portion of the connecting rod.

[0009] Preferably, the thickness of the root of the blade is 2-3 times the thickness of the middle part of the fan blade.

[0010] Compared with the prior art, the utility model has the advantages that the utility model has a simple structure, thickens the root of the blade based on the prior art, increases the bearing range of the blade to thermal stress, uses a rounded corner to transition the edge of the blade, reduces stress concentration, improves the durability of the fan blade in the thermal cycle process, provides a cooling channel on the side of the blade, increases the heat dissipation effect of the fan blade, reduces thermal fatigue damage, and finally realizes the high temperature resistance of the fan blade. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic view of the high-temperature-resistant deformation-preventing fan blade of the heat treatment of the utility model;

[0012] Figure 2 It is the blade back structure schematic view of the high-temperature-resistant deformation-preventing fan blade of the heat treatment of the utility model;

[0013] Label explanation: 1-connecting rod;2-blade;201-cooling channel;202-honeycomb;203-round corner. DETAILED DESCRIPTION

[0014] In order to have further understanding of the purpose, structure, features and functions of the utility model, detailed description is as follows in cooperation with examples.

[0015] Please refer to Figure 1 The high-temperature-resistant deformation-preventing fan blade of the heat treatment of the utility model embodiment, including blade 2, connecting rod 1, the connecting rod 1 is cylindrical, the surface of blade 2 is space arc surface, each blade 2 has two end portions and two long sides, one end portion is narrow and thick, is the root of blade 2, the root of at least two blades 2 is connected with the end portion of connecting rod 1 respectively, and at least two blades 2 are arranged around the periphery of connecting rod 1;The other end of blade 2 is wide, which is the end of blade 2;The two long sides of blade 2 are curved in the same direction within the dimension of blade 2 plate surface, and the cross section of blade 2 is wing-shaped;Cooling channel 201 is arranged on the side of blade 2, and honeycomb 202 is arranged on the lower surface of blade 2.

[0016] Preferably, the depth of honeycomb 202 near the root of blade 2 is twice the depth of other parts of honeycomb 202.Such design, the root of blade is easy to stress accumulation, deepening the depth of honeycomb 202 at the root of blade 2 can effectively distribute the stress of blade 2 root to be uniform, avoid stress concentration, thereby avoiding crack of blade 2.

[0017] Preferably, the corner of blade 2 is round corner 203.Using appropriate round corner transition at the edge of blade 2 can avoid sharp corner, reduce stress concentration and improve the durability of fan blade in the process of thermal cycle.

[0018] Preferably, the root of blade 2 is fixedly connected with the outer side wall of connecting rod 1.

[0019] Preferably, the number of blade 2 is at least three, and the blades 2 are dispersed at equal angles around the end portion of connecting rod 1.Such design can ensure the stability of fan blade 2 when working.

[0020] Preferably, the root thickness of the blade 2 is 2-3 times of the middle thickness of the blade. Such design, with the root of the blade 2 thickened appropriately, is because the root of the blade 2 usually suffers greater stress during operation, and thus, the appropriate thickening of the root of the blade 2 helps to bear greater thermal stress and improves the heat resistance of the blade.

[0021] The preferred embodiments of the present application have been described above with the specific embodiments. The present application is not limited to the above embodiments. It will be understood by those skilled in the art that various changes and modifications can be made to the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-temperature-resistant anti-deformation fan blade treated by heat, comprising a blade (2) and a connecting rod (1), characterized in that: The connecting rod (1) is cylindrical, the surface of the blade (2) is a spatial circular arc surface, the blade (2) has two ends and two long sides, one end is narrow and thick, which is the root of the blade (2), the roots of the at least two blades (2) are respectively connected with the ends of the connecting rod (1), and the at least two blades (2) are arranged around the connecting rod (1) in a ring shape; the other end of the blade (2) is wide, which is the tip of the blade (2); the two long sides of the blade (2) are curved in the same direction within the dimension of the blade (2) plate surface, and the cross section of the blade (2) is in the shape of an airfoil; the side surface of the blade (2) is provided with a cooling channel (201), and the lower surface of the blade (2) is provided with a honeycomb (202).

2. The heat-treated high-temperature-resistant deformation-resistant fan blade of claim 1, wherein: The depth of the honeycomb (202) near the root of the blade (2) is twice that of other parts of the honeycomb (202).

3. The heat-treated high-temperature-resistant deformation-resistant fan blade of claim 1, wherein: The corners of the blade (2) are rounded (203).

4. The heat-treated high-temperature-resistant deformation-resistant fan blade of claim 1, wherein: The root of the blade (2) is fixedly connected with the outer side wall of the connecting rod (1).

5. The heat-treated high-temperature-resistant deformation-resistant fan blade of claim 1, wherein: The number of the blades (2) is at least three, and the blades (2) are equally angularly distributed around the end of the connecting rod (1).

6. The heat-treated high-temperature-resistant deformation-resistant fan blade of claim 1, wherein: The thickness of the root of the blade (2) is 2-3 times that of the middle part of the blade.

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