阅读说明：本技术 一种用于转子的低风阻平衡块、转子组件和压缩机 (Low wind resistance balancing block for rotor, rotor assembly and compressor ) 是由 李晓文 李旺宏 徐玉格 梁泽建 曹杜鹃 于 2020-11-09 设计创作，主要内容包括：本发明属于压缩机技术领域,具体是一种用于转子的低风阻平衡块、转子组件和压缩机,平衡块整体呈弧形结构,平衡块的底座高度与转子铸铝顶部高度齐平,平衡块的底座上设有凸台,凸台与底座为一体式结构,凸台为弧形的翅片式结构,凸台两端的迎风面为圆角或弧形过渡；底座两端开设有安装孔,安装孔中心过转子圆心平面,本发明采用翅片式凸台平衡块,翅片结构可大幅降低旋转风阻,减小风噪。同时还能降低阻力提升性能。(The invention belongs to the technical field of compressors, and particularly relates to a low-wind-resistance balance block for a rotor, a rotor assembly and a compressor, wherein the balance block is integrally of an arc-shaped structure, the height of a base of the balance block is flush with the height of the top of cast aluminum of the rotor, a boss is arranged on the base of the balance block, the boss and the base are of an integrated structure, the boss is of an arc-shaped fin structure, and the windward surfaces at the two ends of the boss are in fillet or arc transition; the two ends of the base are provided with mounting holes, and the centers of the mounting holes pass through the circle center plane of the rotor. And meanwhile, the resistance improvement performance can be reduced.)

1. A low wind resistance balance block for a rotor is characterized by comprising a base and a boss, wherein the balance block is integrally of an arc-shaped structure, the base is embedded into one end of rotor cast aluminum, the height of the base is flush with the top height of the rotor cast aluminum, the boss and the base are of an integrated structure, and the boss is of an arc-shaped fin structure; mounting holes are formed in the two ends of the base.

2. The balance weight of claim 1, wherein the two ends of the boss are windward and the windward side is in smooth transition with the surface of the base.

3. The low windage balance block of claim 2 wherein the angle between the windward side of the boss and the surface of the base is A, and A is in the range of 0 ° to 90 °.

4. The balance weight for a rotor of claim 1, wherein the distance L between the side end surface of the base and the center plane of the rotor is not more than 1/2R, and R is the radius of the rotor.

5. The low windage counterweight of claim 1 wherein the mounting hole is centered over the rotor centerplane.

6. The low windage counterbalance according to claim 1 wherein the boss outer diameter is less than or equal to the base outer diameter.

7. A rotor assembly, characterized in that it employs a low windage balancing mass for a rotor according to claims 1-6.

8. A compressor, characterized in that the rotor of the compressor employs a low windage balance for a rotor according to claims 1-6.

Technical Field

The invention relates to the technical field of compressors, in particular to a low wind resistance balancing block for a rotor, a rotor assembly and a compressor.

Background

When the rotor compressor works, the balance block protruding out of the rotor can generate wind noise when rotating, the power of the motor is influenced by overlarge wind resistance, and the overall performance of the compressor is influenced by the shape design of the balance block.

There is therefore a need for a counterweight that reduces wind noise and improves compressor performance.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a low wind resistance balance block for a rotor, a rotor assembly and a compressor, which can reduce the windward area of the balance block when the rotor rotates and reduce the power consumption and the noise.

In order to achieve the purpose, the invention adopts the following technical scheme:

a low wind resistance balance block for a rotor comprises a base and a boss, wherein the balance block is integrally of an arc-shaped structure, the base is embedded and installed at one end of rotor cast aluminum, the height of the base is flush with the top height of the rotor cast aluminum, the boss and the base are of an integrated structure, and the boss is of an arc-shaped fin structure; mounting holes are formed in the two ends of the base.

Furthermore, the two ends of the boss are windward surfaces, and the windward surfaces and the surface of the base are in smooth transition, so that air flow can smoothly pass through the windward surfaces, and turbulent flow is avoided.

Furthermore, the included angle between the windward side of the boss and the surface of the base is A, and the range value of A is more than or equal to 0 degree and less than or equal to 90 degrees.

Furthermore, the distance L between the side end surface of the base and the circle center plane of the rotor is not more than 1/2R, and R is the radius of the rotor.

Under the condition of simultaneously meeting three conditions of smooth transition of the windward side, included angle and distance between the side end surface and the circular plane of the rotor, the size of the protruded fin can be reduced to the minimum

Furthermore, the center of the mounting hole passes through the circle center plane of the rotor, and the mounting hole is preferably fixed by adopting a cast aluminum rivet structure, and can also adopt other fixing modes such as a screw hole and the like.

Furthermore, the outer diameter of the boss is less than or equal to that of the base.

The counterweight is made of structural steel or other relatively low cost material for cost considerations, and may be made of copper or other material denser than aluminum for performance quality priority.

The balance weight can be integrally cast. The manufacturing process is flexible and simple, the cost is low, and the industrial practicability is strong.

The balance block can keep the same plane with the rotor cast aluminum without a boss structure of the balance block under the condition of meeting the balance; the secondary balance block at the bottom of the rotor can also adopt the same embedded cast aluminum structure, so that the wind resistance is further reduced.

The rotor assembly adopts the low wind resistance balancing block for the rotor.

The rotor of the compressor adopts the low wind resistance balancing block for the rotor.

Advantageous effects

The invention provides a low wind resistance balance block for a rotor, wherein the balance block adopts a fin type boss balance block, and a fin structure can greatly reduce the rotating wind resistance and the wind noise. And meanwhile, the resistance improvement performance can be reduced.

Drawings

The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.

FIG. 1 is a low windage balance for a rotor of the present invention;

FIG. 2 is a schematic view of a balance weight and rotor mounting structure according to the present invention;

FIG. 3 is a schematic view of a rotor structure of the present invention without a boss;

FIG. 4 is a schematic structural view of embodiment 2 of the present invention;

reference numerals: 1-base, 101-mounting hole, 2-boss, 201-fin type structure, 3-rotor cast aluminum and 4-secondary balance block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.

Example 1: a low windage counterbalance for a rotor.

As shown in fig. 1-3, the present embodiment provides a low wind resistance balancing block for a rotor, the balancing block includes a 1-base and a 2-boss, the balancing block is integrally formed in an arc shape, the 1-base is embedded and installed at one end of a 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 integrally formed, and the 2-boss is formed in an arc 201-fin structure; and (1) 101-mounting holes are formed at two ends of the base.

The two ends of the 2-boss are windward surfaces, and the windward surfaces and the surface of the 1-base are in smooth transition, so that air flow can smoothly pass through the windward surfaces, and turbulence is not formed.

The included angle between the windward side of the 2-boss and the surface of the 1-base is A, and the size of A is 30 degrees.

The distance L between the side end surface of the 1-base and the circle center plane of the rotor is not more than 1/2R, and R is the radius of the rotor.

Under the condition of simultaneously meeting three conditions of smooth transition of the windward side, included angle and distance between the side end surface and the circular plane of the rotor, the size of the protruded fin can be reduced to the minimum

The center of the 101-mounting hole passes through the circle center plane of the rotor, and the 101-mounting hole is preferably fixed by adopting a cast aluminum rivet structure.

The outer diameter of the 2-lug boss is less than or equal to 1-the outer diameter of the base.

The balance weight is made of structural steel in consideration of cost.

The balance weight can be integrally cast. The manufacturing process is flexible and simple, the cost is low, and the industrial practicability is strong.

The rotor assembly adopts the low wind resistance balancing block for the rotor.

The rotor of the compressor adopts the low wind resistance balancing block for the rotor.

Example 2: low wind resistance balance block for rotor

As shown in fig. 4: the balance block can be kept on the same plane with the 3-rotor cast aluminum without a 2-boss structure of the balance block under the condition of meeting the balance; the 4-time balance block at the bottom of the rotor can also adopt the same embedded cast aluminum structure, thereby further reducing the wind resistance.

Example 3: a low windage counterbalance for a rotor.

The embodiment provides a low wind resistance balancing block for a rotor, which comprises a 1-base and a 2-boss, wherein the balancing block is integrally of an arc-shaped structure, the 1-base is embedded and installed at one end of 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 of an integral structure, and the 2-boss is of an arc-shaped 201-fin type structure; and (1) 101-mounting holes are formed at two ends of the base.

The two ends of the 2-boss are windward surfaces, and the windward surfaces and the surface of the 1-base are in smooth transition, so that air flow can smoothly pass through the windward surfaces, and turbulence is not formed.

The included angle between the windward side of the 2-boss and the surface of the 1-base is A, and the size of A is 60 degrees.

The distance L between the side end surface of the 1-base and the circle center plane of the rotor is not more than 1/2R, and R is the radius of the rotor.

Under the condition of simultaneously meeting three conditions of smooth transition of the windward side, included angle and distance between the side end surface and the circular plane of the rotor, the size of the protruded fin can be reduced to the minimum

The center of the 101-mounting hole passes through the circle center plane of the rotor, and the 101-mounting hole is preferably fixed by adopting a screw structure.

The outer diameter of the 2-lug boss is less than or equal to 1-the outer diameter of the base.

The balance weight is made of copper in consideration of cost.

The balance weight can be integrally cast. The manufacturing process is flexible and simple, the cost is low, and the industrial practicability is strong.

Example 4: as shown in fig. 2-3: a rotor assembly, the rotor assembly adopts the low wind resistance balancing block.

Example 5: the compressor rotor of the compressor adopts the low wind resistance balancing block.

Example 6: low wind resistance balance block for rotor

The embodiment provides a low wind resistance balancing block for a rotor, which comprises a 1-base and a 2-boss, wherein the balancing block is integrally of an arc-shaped structure, the 1-base is embedded and installed at one end of 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 of an integral structure, and the 2-boss is of an arc-shaped 201-fin type structure; and (1) 101-mounting holes are formed at two ends of the base.

In this embodiment, an opening is formed in the middle of the 201-fin type structure, and the bottom surface of the opening is a 1-base surface, that is, the original 201-fin type structure is divided into two equal-length fin structures, and both ends of each fin structure are cut in a smooth transition mode.

The two ends of the 2-boss are windward surfaces, and the windward surfaces and the surface of the 1-base are in smooth transition, so that air flow can smoothly pass through the windward surfaces, and turbulence is not formed.

The included angle between the windward side of the 2-boss and the surface of the 1-base is A, and the size of A is 60 degrees.

The distance L between the side end surface of the 1-base and the circle center plane of the rotor is not more than 1/2R, and R is the radius of the rotor.

Under the condition of simultaneously meeting three conditions of smooth transition of the windward side, included angle and distance between the side end surface and the circular plane of the rotor, the size of the protruded fin can be reduced to the minimum

The center of the 101-mounting hole passes through the circle center plane of the rotor, and the 101-mounting hole is preferably fixed by adopting a screw structure.

The outer diameter of the 2-lug boss is less than or equal to 1-the outer diameter of the base.

The balance weight is made of copper in consideration of cost.

The balance weight can be integrally cast. The manufacturing process is flexible and simple, the cost is low, and the industrial practicability is strong.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.