A low wind resistance balance block for a rotor, a rotor assembly and a compressor

Abstract

The present invention belongs to the technical field of compressors, and specifically is a low wind resistance balance block for rotors, a rotor assembly and a compressor. The balance block is in an arc-shaped structure as a whole, and the base height of the balance block is flush with the top height of the cast aluminum rotor. A boss is provided on the base of the balance block, and the boss and the base are an integrated structure. The boss is an arc-shaped fin-type structure, and the windward surfaces of both ends of the boss are rounded or arc-shaped transitions; mounting holes are provided at both ends of the base, and the center of the mounting hole passes through the center plane of the rotor. The present invention adopts a fin-type boss balance block, and the fin structure can greatly reduce the rotational wind resistance and reduce wind noise. At the same time, it can also reduce resistance and improve performance.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, in particular to a low wind resistance balance block for a rotor, a rotor assembly and a compressor. Background Art

[0002] When the rotor compressor is working, the balancing block protruding from the rotor will generate wind noise during rotation. Excessive wind resistance will also affect the motor power. The shape design of the balancing block affects the overall performance of the compressor.

[0003] Therefore, a balancing block capable of reducing wind noise and improving compressor performance is needed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a low wind resistance balancing block, a rotor assembly and a compressor for a rotor, which can reduce the windward area of ​​the balancing block when the rotor rotates, and reduce power consumption and noise.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A low wind resistance balance block for a rotor, the balance block comprising a base and a boss, the balance block being in an arc-shaped structure as a whole, the base being embedded and installed at one end of the rotor cast aluminum, the height of the base being flush with the top height of the rotor cast aluminum, the boss being an integrated structure with the base, and the boss being an arc-shaped fin-type structure; mounting holes are provided at both ends of the base.

[0007] Furthermore, both ends of the boss are windward surfaces, and the windward surface and the base surface are in smooth transition, ensuring that the air flow passes smoothly through the windward surface without forming turbulence.

[0008] Furthermore, the angle between the windward surface of the boss and the surface of the base is A, and the range of A is 0°<A≤90°.

[0009] Furthermore, the distance L between the side end surface of the base and the center plane of the rotor is ≤1 / 2R, where R is the radius of the rotor.

[0010] Under the condition that the three conditions of smooth transition of the windward surface, the angle and the distance between the side end surface and the circular plane of the rotor are met at the same time, the size of the protruding fin can be reduced to a minimum.

[0011] Furthermore, the center of the mounting hole passes through the center plane of the rotor, and the mounting hole is preferably fixed by a cast aluminum rivet structure, and other fixing methods such as screw holes can also be used.

[0012] Furthermore, the outer diameter of the boss is less than or equal to the outer diameter of the base.

[0013] The balancing weight is made of structural steel or other relatively low-cost materials when cost is taken into consideration, and copper or other materials with higher density than aluminum can also be used when performance and quality are given priority.

[0014] The balancing block can be integrally cast, and the manufacturing process is flexible and simple, the cost is low, and the industrialization is practical.

[0015] Under the condition of satisfying the balance, the boss structure of the balancing block may not be needed and the balancing block can be kept in the same plane as the rotor cast aluminum; the secondary balancing block at the bottom of the rotor may also adopt the same embedded cast aluminum structure to further reduce wind resistance.

[0016] A rotor assembly adopts the above-mentioned low wind resistance balancing block for a rotor.

[0017] A compressor, wherein the rotor of the compressor adopts the above-mentioned low wind resistance balancing block for the rotor.

[0018] Beneficial Effects

[0019] The present invention provides a low wind resistance balance block for a rotor. The balance block adopts a fin-type boss balance block. The fin structure can greatly reduce the rotation wind resistance and wind noise. At the same time, it can also reduce resistance and improve performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0021] Figure 1 A low wind resistance balance block for a rotor of the present invention;

[0022] Figure 2 Schematic diagram of the installation structure of the balancing weight and the rotor of the present invention;

[0023] Figure 3 A schematic diagram of the rotor structure of the present invention without the boss;

[0024] Figure 4 A schematic diagram of the structure of Embodiment 2 of the present invention;

[0025] Figure numerals: 1-base, 101-mounting hole, 2-boss, 201-fin structure, 3-rotor cast aluminum, 4-secondary balancing block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary persons in the art without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1: A low wind resistance balance weight for a rotor.

[0028] like Figure 1-3 As shown, this embodiment provides a low wind resistance balance block for a rotor, the balance block includes a 1-base and a 2-boss, the balance block is an arc-shaped structure as a whole, the 1-base is embedded and installed on one end of the 3-rotor cast aluminum, the height of the 1-base is flush with the top height of the 3-rotor cast aluminum, the 2-boss and the 1-base are an integrated structure, the 2-boss is an arc-shaped 201-fin structure; 101-mounting holes are opened at both ends of the 1-base.

[0029] The two ends of the 2-boss are windward surfaces, and the windward surface and the surface of the 1-base are in smooth transition, so as to ensure that the air flow passes smoothly through the windward surface without forming turbulence.

[0030] The angle between the windward surface of the 2-boss and the surface of the 1-base is A, and the magnitude of A is 30°.

[0031] The distance L between the side end surface of the 1-base and the center plane of the rotor is ≤ 1 / 2R, where R is the radius of the rotor.

[0032] Under the condition that the three conditions of smooth transition of the windward surface, the angle and the distance between the side end surface and the circular plane of the rotor are met at the same time, the size of the protruding fin can be reduced to a minimum.

[0033] The center of the 101-mounting hole passes through the center plane of the rotor, and the 101-mounting hole is preferably fixed with a cast aluminum rivet structure.

[0034] The 2-boss outer diameter is ≤ 1-base outer diameter.

[0035] The balancing weight is made of structural steel considering the cost.

[0036] The balancing block can be integrally cast, and the manufacturing process is flexible and simple, the cost is low, and the industrialization is practical.

[0037] A rotor assembly adopts the above-mentioned low wind resistance balancing block for a rotor.

[0038] A compressor, wherein the rotor of the compressor adopts the above-mentioned low wind resistance balancing block for the rotor.

[0039] Embodiment 2: A low wind resistance balance weight for a rotor.

[0040] like Figure 4 As shown: under the condition of meeting the balance requirement, the 2-boss structure of the balancing block can be omitted, and it can be kept in the same plane with the 3-rotor cast aluminum; the 4-secondary balancing block at the bottom of the rotor can also adopt the same embedded cast aluminum structure to further reduce wind resistance.

[0041] Example 3: A low wind resistance balance weight for a rotor.

[0042] The present embodiment provides a low wind resistance balance block for a rotor, the balance block includes a 1-base and a 2-boss, the balance block is an arc-shaped structure as a whole, the 1-base is embedded and installed at one end of the 3-rotor cast aluminum, the height of the 1-base is flush with the top height of the 3-rotor cast aluminum, the 2-boss and the 1-base are an integrated structure, the 2-boss is an arc-shaped 201-fin structure; 101-mounting holes are opened at both ends of the 1-base.

[0043] The two ends of the 2-boss are windward surfaces, and the windward surface and the surface of the 1-base are in smooth transition, so as to ensure that the air flow passes smoothly through the windward surface without forming turbulence.

[0044] The angle between the windward surface of the 2-boss and the surface of the 1-base is A, and the magnitude of A is 60°.

[0045] The distance L between the side end surface of the 1-base and the center plane of the rotor is ≤ 1 / 2R, where R is the radius of the rotor.

[0046] Under the condition that the three conditions of smooth transition of the windward surface, the angle and the distance between the side end surface and the circular plane of the rotor are met at the same time, the size of the protruding fin can be reduced to a minimum.

[0047] The center of the 101-mounting hole passes through the center plane of the rotor, and the 101-mounting hole is preferably fixed with a screw structure.

[0048] The 2-boss outer diameter is ≤ 1-base outer diameter.

[0049] The balance weight is made of copper in consideration of cost.

[0050] The balancing block can be integrally cast, and the manufacturing process is flexible and simple, the cost is low, and the industrialization is practical.

[0051] Example 4: Figure 2-3 Shown is a rotor assembly, which adopts the low wind resistance balance block described above.

[0052] Embodiment 5: A compressor, wherein the compressor rotor adopts the low wind resistance balance block described above.

[0053] Example 6: A low wind resistance balance weight for a rotor.

[0054] The present embodiment provides a low wind resistance balance block for a rotor, the balance block includes a 1-base and a 2-boss, the balance block is an arc-shaped structure as a whole, the 1-base is embedded and installed at one end of the 3-rotor cast aluminum, the height of the 1-base is flush with the top height of the 3-rotor cast aluminum, the 2-boss and the 1-base are an integrated structure, the 2-boss is an arc-shaped 201-fin structure; 101-mounting holes are opened at both ends of the 1-base.

[0055] In this embodiment, an opening is set in the middle of the 201-fin structure, and the bottom surface of the opening is the 1-base surface, that is, the original 201-fin structure is divided into two sections of equal length fin structure, and both ends of each section of the fin structure adopt a smooth transition.

[0056] The two ends of the 2-boss are windward surfaces, and the windward surface and the surface of the 1-base are in smooth transition, so as to ensure that the air flow passes smoothly through the windward surface without forming turbulence.

[0057] The angle between the windward surface of the 2-boss and the surface of the 1-base is A, and the magnitude of A is 60°.

[0058] The distance L between the side end surface of the 1-base and the center plane of the rotor is ≤ 1 / 2R, where R is the radius of the rotor.

[0059] Under the condition that the three conditions of smooth transition of the windward surface, the angle and the distance between the side end surface and the circular plane of the rotor are met at the same time, the size of the protruding fin can be reduced to a minimum.

[0060] The center of the 101-mounting hole passes through the center plane of the rotor, and the 101-mounting hole is preferably fixed with a screw structure.

[0061] The 2-boss outer diameter is ≤ 1-base outer diameter.

[0062] The balance weight is made of copper in consideration of cost.

[0063] The balancing block can be integrally cast, and the manufacturing process is flexible and simple, the cost is low, and the industrialization is practical.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A low wind resistance balance weight for a rotor, characterized in that: The balancing block includes a base and a boss. The balancing block is in an arc-shaped structure as a whole. The base is embedded and installed at one end of the cast aluminum rotor. The height of the base is flush with the top height of the cast aluminum rotor. The boss and the base are an integrated structure. The boss is an arc-shaped fin-type structure. Mounting holes are provided at both ends of the base. The two ends of the boss are windward surfaces, and the windward surface and the base surface are in smooth transition; The angle between the windward surface of the boss and the surface of the base is A, and the range of A is 0°<A≤90°; The distance between the side end surface of the base and the center plane of the rotor is L≤1 / 2R, where R is the radius of the rotor; The fin structure protrudes from the base surface in the axial direction of the rotor. A plurality of fins in the fin structure extend in the axial direction of the rotor and are spaced apart in the radial direction of the rotor.

2. A low wind resistance balance weight for a rotor according to claim 1, characterized in that: The center of the mounting hole passes through the center plane of the rotor.

3. A low wind resistance balance weight for a rotor according to claim 1, characterized in that: The outer diameter of the boss is less than or equal to the outer diameter of the base.

4. A rotor assembly, characterized in that: The rotor assembly adopts the low wind resistance balance weight for the rotor according to any one of claims 1-3.

5. A compressor, characterized in that: The rotor of the compressor adopts the low wind resistance balance block for the rotor according to any one of claims 1-3.

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