Axial structure of orbiting scroll

Abstract

The utility model discloses an axial structure of an orbiting scroll, which belongs to the technical field of scroll compressors and comprises an eccentric shaft, and an orbiting scroll main body, a bearing, an upper balance block and a motor rotor which are assembled on the eccentric shaft from top to bottom, the eccentric shaft is sleeved with a mounting part of the upper balance block, a rotating part of the upper balance block extends outwards to form a semicircular structure, and a flow guide groove is formed in the end face, facing the motor rotor, of the rotating part; the flow guide groove is formed by cutting along an arc path with a circle as the appearance, the starting point of the arc path is located on the leftmost end face of the rotating part in the rotating direction, and the end point of the arc extends towards the right side. According to the utility model, the balance block structure is optimized, the unbalanced torque of a rotor system is reduced, the vibration and noise during high-speed operation are reduced, the stability of the whole machine is improved, and the service life of the whole machine is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of scroll compressor technology, specifically to an axial structure of a moving scroll. Background Technology

[0002] With the increasing application of scroll compressors in high-efficiency refrigeration, air compression, and new energy fields, the demand for high-speed (e.g., ≥10000 rpm) compressors is growing. However, dynamic imbalance under high-speed conditions can easily lead to increased vibration, shortened bearing life, increased noise, and reduced overall compressor reliability. Therefore, optimizing the dynamic balance of scroll compressors, reducing unbalanced torque, and improving stability have become key technological breakthroughs. Utility Model Content

[0003] The main purpose of this utility model is to solve the above-mentioned technical problems to a certain extent, and to propose a dynamic scroll axial structure. By optimizing the balance block structure, the unbalanced torque of the rotor system is reduced, the vibration and noise during high-speed operation are reduced, and the overall stability and service life of the machine are improved.

[0004] The above-mentioned problems to be solved by this utility model are achieved through the following technical solution:

[0005] An axial structure for a moving scroll disk is proposed, comprising an eccentric shaft and a moving disk body, bearings, an upper balance block, and a motor rotor mounted on the eccentric shaft from top to bottom. The mounting part of the upper balance block is sleeved on the eccentric shaft, and the rotating part of the upper balance block extends outward to form a semi-circular structure. A guide groove is provided on the end face of the rotating part facing the motor rotor. The guide groove is formed by cutting along an arc path with a circular shape, wherein the starting point of the arc path is located on the leftmost end face of the rotating part along the rotation direction, and the ending point of the arc extends to the right.

[0006] In some embodiments, the diameter of the guide channel gradually decreases from the starting point of the arc to the ending point of the arc, and a filter arc surface is formed at the ending point of the arc.

[0007] In some embodiments, the outer diameter of the upper balancing block is 75 mm.

[0008] In some embodiments, the arc is coaxial with the eccentric shaft, and the diameter of the arc is 58mm.

[0009] In some embodiments, the length of the arc is half that of the rotating portion.

[0010] In some embodiments, the diameter of the circle at the starting point of the arc path of the guide channel is 8 mm.

[0011] In some embodiments, the thickness of the upper balancing block is 8.8 mm.

[0012] In some embodiments, a lower balance block is fitted at the bottom of the motor rotor.

[0013] The technical solution provided in this application has the following advantages compared with the prior art:

[0014] This invention assembles the moving disc body, bearings, upper balance block, and motor rotor onto an eccentric shaft from top to bottom. This precisely compensates for the imbalance effect during high-speed rotation, reduces bearing load, and improves operational stability. Simultaneously, a guide groove, cut along an arc path in the shape of a circle, is provided on the surface of the upper balance block. This guide groove is located on the leftmost end face along the direction of rotation, thereby reducing airflow disturbance during high-speed rotation, lowering wind resistance loss, and enabling the compressor to maintain low vibration and low noise even at 10,000 rpm. This extends service life, reduces energy consumption, minimizes eddies and airflow interference, and improves compressor efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of the axial structure of the moving scroll plate in this practical application;

[0017] Figure 2 This is a structural diagram of the axial structure of the moving scroll plate in this practical application.

[0018] Explanation of icon numbers:

[0019] 1-Eccentric shaft; 2-Moving disc body; 3-Bearing; 4-Upper balance block; 401-Mounting part; 402-Rotating part; 5-Motor rotor; 6-Lower balance block; 7-Guide groove; 8-Filter arc surface. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] like Figure 1-2 As shown, this utility model proposes an axial structure for a moving scroll, including an eccentric shaft 1 and a moving scroll body 2, a bearing 3, an upper balance block 4, and a motor rotor 5 mounted on the eccentric shaft 1 from top to bottom. A lower balance block 6 is mounted at the bottom of the motor rotor 5. The mounting part 401 of the upper balance block 4 is sleeved on the eccentric shaft 1, and the rotating part 402 of the upper balance block 4 extends outward to form a semi-circular structure. The outer diameter of the upper balance block 4 is 75 mm, and the thickness is 8.8 mm. The end face of the rotating part 402 facing the motor rotor 5 is provided with a guide. The guide groove 7 is formed by cutting along an arc path with a circular shape. The length of the arc is half of the rotating part 402. The arc is coaxial with the eccentric shaft 1 and the diameter of the arc is 58mm. The starting point of the arc path is located on the leftmost end face of the rotating part 402 in the direction of rotation, and the ending point of the arc extends to the right. Specifically, the diameter of the guide groove 7 gradually decreases from the starting point of the arc to the ending point of the arc. The diameter of the circle at the starting point of the arc path of the guide groove 7 is 8mm. A filter arc surface 8 is formed at the ending point of the arc.

[0024] This embodiment assembles the moving disc body 2, bearing 3, upper balance block 4, and motor rotor 5 from top to bottom onto the eccentric shaft 1. This precisely compensates for the imbalance effect during high-speed rotation, reduces the load on the bearing 3, and improves operational stability. Simultaneously, a guide groove 7, formed by cutting along an arc path in a circular shape, is provided on the surface of the upper balance block 4. The guide groove 7 is aligned with the leftmost end face of the rotation direction, thereby reducing airflow disturbance during high-speed rotation and lowering wind resistance loss. This allows the compressor to maintain low vibration and low noise even at 10,000 rpm, extending its service life, reducing energy consumption, minimizing eddies and airflow interference, and improving compressor efficiency. It is suitable for applications such as new energy vehicles, industrial refrigeration, and high-speed air compressors, and has broad market prospects.

[0025] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An axial structure for a moving scroll disk, characterized in that, It includes an eccentric shaft and a moving disk body, bearings, an upper balance block and a motor rotor assembled on the eccentric shaft from top to bottom; The mounting part of the upper balance block is sleeved on the eccentric shaft, and the rotating part of the upper balance block extends outward to form a semi-circular structure. The end face of the rotating part facing the motor rotor is provided with a guide groove. The guide channel is formed by cutting along an arc path with a circular shape. The starting point of the arc path is located on the leftmost end face of the rotating part in the direction of rotation, and the ending point of the arc extends to the right.

2. The axial structure of the moving scroll plate according to claim 1, characterized in that, The diameter of the guide channel gradually decreases from the starting point of the arc to the ending point of the arc, and a filter arc surface is formed at the ending point of the arc.

3. The axial structure of the moving scroll plate according to claim 1, characterized in that, The outer diameter of the upper balance block is 75mm.

4. The axial structure of the moving scroll plate according to claim 1, characterized in that, The arc is coaxial with the eccentric shaft, and the diameter of the arc is 58mm.

5. The axial structure of the moving scroll plate according to claim 1, characterized in that, The length of the arc is half that of the rotating part.

6. The axial structure of the moving scroll plate according to claim 1, characterized in that, The diameter of the circle at the starting point of the arc path of the guide channel is 8mm.

7. The axial structure of the moving scroll plate according to claim 1, characterized in that, The thickness of the upper balancing block is 8.8 mm.

8. The axial structure of the moving scroll plate according to claim 1, characterized in that, The bottom of the motor rotor is equipped with a lower balance block.

Images