Powder metallurgy compressor balance plate
By setting limiting holes and limiting grooves on the counterweight and fixing it with limiting blocks and elastic pads, combined with flow guides and sound insulation plates, the damage problem caused by rivet fixing is solved, achieving more stable assembly and noise reduction, and improving the operating performance of the compressor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN JINXIN POWDER METALLURGY CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-12
AI Technical Summary
In existing technologies, using rivets to fix the balance block can easily damage the balance block, making it impossible to effectively achieve the balancing function.
The counterweight is equipped with limiting holes and limiting grooves. It is fixed by limiting screws and fixing nuts in combination with the limiting block and elastic rubber pad. The counterweight is equipped with flow guides and sound insulation plates to reduce displacement and noise.
It effectively reduces the offset and damage of the counterweight, improves assembly stability and reduces noise, and enhances the operating stability and lifespan of the compressor.
Smart Images
Figure CN224352326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor balancing technology, specifically a powder metallurgy compressor balancing plate. Background Technology
[0002] Powder metallurgy compressor balance plates (balance blocks) are core components of compressors. Manufactured using powder metallurgy technology, they offer advantages such as high density, high precision, high strength, and low remanence. Widely used in applications such as rotary compressors in household air conditioners, they are key components for improving compressor performance and reliability. As a core component, the balance block eliminates crankshaft mass eccentricity through counterweight action, reducing vibration and bearing wear during high-speed rotation, thereby improving compressor operational stability and lifespan.
[0003] In the prior art, such as the compressor balancing device disclosed in announcement number CN205977606U, there is a balancing body, which is a fan-shaped structure. The center of the fan-shaped structure is a ring structure, and the ring structure and the fan-shaped structure are smoothly connected. The ring structure has a mounting hole, and the center of the mounting hole is concentric with the center of the fan-shaped structure. The upper edge of the fan-shaped structure has a number of balancing plates, and the balancing plates are connected to the balancing body by rivets. Through its unique structural design, it can be installed on the short shaft of the compressor to reduce vibration and noise, and the appropriate weight can be added or removed as needed.
[0004] Existing balance plates, through their unique structural design, can be installed on the short shaft of a compressor to reduce vibration and noise, and the weight can be increased or decreased as needed. However, when fixing the balance blocks, multiple balance blocks are fixed with rivets. While rivets can achieve the fixing function by resisting compressive deformation to tightly connect the plates, they are prone to damaging the balance blocks, resulting in the inability to effectively achieve the balancing function. Utility Model Content
[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0006] Given that the existing technology uses rivets to fix multiple balance blocks when fixing them, and that rivets tightly connect the sheet metal by resisting compressive deformation, although they can achieve the fixing function, they are prone to damaging the balance blocks, resulting in the inability to effectively achieve balance.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A powder metallurgy compressor balance plate includes a balance plate body, the upper end of which is provided with a balancing component for balancing the compressor, and one side of which is provided with a fixing component for fixing.
[0009] The balancing component includes three counterweights, which are equidistantly installed on the upper end of the balancing plate body. Each of the three counterweights has two limiting screws that are fixedly connected to the balancing plate body through its interior. An elastic rubber pad is installed on the upper surface of one of the counterweights.
[0010] As a further improvement of this utility model: the upper surface of the elastic pad is connected to a fixing nut that is threadedly connected to the limiting screw.
[0011] As a further improvement of this utility model, limit grooves are provided inside the three counterweights.
[0012] As a further improvement of this utility model: each of the three counterweights has a limiting hole on its upper surface, and a limiting block is inserted into the inside of the limiting hole.
[0013] As a further improvement of this utility model: the fixing component includes a connector, which is integrally fixed to the inner wall of the balance plate body.
[0014] As a further improvement of this utility model: the connector has a connecting groove inside, and two fixing bolts are installed on the outer wall of the connector.
[0015] As a further improvement of this utility model: each of the three counterweights has a flow guide fixed at both ends, and a sealing gasket is bonded to the lower surface of each of the three counterweights.
[0016] As a further improvement of this utility model: each of the three counterweights has a sound insulation board fixed inside, and the lower surface of the sound insulation board has a number of noise reduction holes.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. The limiting hole opened on the counterweight of this utility model can position multiple counterweights with the cooperation of the limiting block, effectively reducing the offset of the counterweights during splicing. After assembly, the fixing nut is screwed onto the limiting screw and tightened. With the cooperation of the elastic rubber pad, multiple counterweights can be limited and fixed, and the elastic rubber pad plays a certain buffering effect, thereby effectively reducing the damage of the counterweights.
[0019] 2. The present invention uses a flow guide on the counterweight to guide the flow of lubricating oil inside the compressor when the counterweight is rotated, thereby reducing the resistance of the lubricating oil to the rotation of the counterweight. The sound insulation plate inside the counterweight, in conjunction with the noise reduction holes, can absorb the noise generated by the compressor during operation, thus playing a certain role in noise reduction. Attached Figure Description
[0020] Figure 1 A three-dimensional structural diagram of a balance plate for a powder metallurgy compressor;
[0021] Figure 2 This is a three-dimensional structural diagram of the balance plate body in a powder metallurgy compressor balance plate.
[0022] Figure 3 This is a three-dimensional structural diagram of a counterweight block in a powder metallurgy compressor balance plate.
[0023] Figure 4 This is a top view schematic diagram of the counterweight block in the balance plate of a powder metallurgy compressor.
[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the counterweight block in the balance plate of a powder metallurgy compressor.
[0025] In the diagram: 1. Balance plate body; 2. Counterweight; 21. Limiting screw; 22. Elastic rubber pad; 23. Set nut; 24. Limiting groove; 25. Limiting hole; 26. Limiting block; 3. Connecting component; 31. Connecting groove; 32. Fixing bolt; 4. Guide component; 5. Sealing gasket; 6. Sound insulation plate; 7. Noise reduction hole. Detailed Implementation
[0026] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.
[0029] Example 1:
[0030] Please see Figures 1-5 This is the first embodiment of the present invention.
[0031] This embodiment provides a powder metallurgy compressor balance plate, including a balance plate body 1, a balance component for balancing the compressor at the upper end of the balance plate body 1, and a fixing component for fixing on one side of the balance plate body 1.
[0032] The balancing assembly includes three counterweights 2. The three counterweights 2 are equidistantly installed on the upper end of the balance plate body 1. Each of the three counterweights 2 has two limiting screws 21 that are fixedly connected to the balance plate body 1. An elastic rubber pad 22 is installed on the upper surface of one counterweight 2.
[0033] Specifically, the upper surface of the elastic pad 22 is connected to a fixing nut 23 that is threadedly connected to the limiting screw 21.
[0034] Furthermore, by screwing the fixing nut 23 onto the limiting screw 21 and tightening the fixing nut 23, multiple counterweights 2 can be limited and fixed with the cooperation of the elastic rubber pad 22. The elastic rubber pad 22 also plays a certain buffering role, thereby effectively reducing the possibility of damage to the counterweights 2.
[0035] Specifically, each of the three counterweights 2 has a limiting groove 24 inside, and each of the three counterweights 2 has a limiting hole 25 on its upper surface, with a limiting block 26 inserted into the limiting hole 25.
[0036] Furthermore, through the limiting hole 25 opened on the counterweight 2, with the cooperation of the limiting block 26, multiple counterweights 2 can be positioned, thereby effectively reducing the situation of offset when the counterweights 2 are spliced.
[0037] In use, the limiting screw 21 on the balance plate body 1 is used to align the limiting groove 24 on the counterweight 2 with the limiting screw 21, and then the counterweight 2 is placed vertically to connect and assemble it. Different numbers of counterweights 2 can be assembled according to actual conditions for easy use. Through the limiting hole 25 on the counterweight 2, with the cooperation of the limiting block 26, multiple counterweights 2 can be positioned, thereby effectively reducing the possibility of offset when the counterweights 2 are spliced. After assembly, the fixing nut 23 is screwed onto the limiting screw 21 and tightened. With the cooperation of the elastic rubber pad 22, multiple counterweights 2 can be limited and fixed, and the elastic rubber pad 22 plays a certain buffering role, thereby effectively reducing the possibility of damage to the counterweights 2.
[0038] In summary, when the balance plate of the powder metallurgy compressor is in use, multiple counterweights 2 can be positioned through the limiting holes 25 on the counterweights 2 and with the cooperation of the limiting blocks 26, thereby effectively reducing the possibility of offset during the splicing of the counterweights 2. After assembly, the fixing nuts 23 are screwed onto the limiting screws 21 and tightened. With the cooperation of the elastic rubber pads 22, multiple counterweights 2 can be limited and fixed, and the elastic rubber pads 22 play a certain buffering role, thereby effectively reducing the possibility of damage to the counterweights 2.
[0039] Example 2:
[0040] Please see Figures 1-5 This is the second embodiment of the present utility model.
[0041] Specifically, the fixing component includes a connector 3, which is integrally fixed to the inner wall of the balance plate body 1. The connector 3 has a connecting groove 31 inside and two fixing bolts 32 installed on the outer wall of the connector 3.
[0042] Furthermore, the connecting groove 31 opened in the connector 3 can cooperate with the key block on the compressor shaft, thereby playing a limiting role and effectively reducing the possibility of the connector 3 shifting. After assembly, the fixing bolt 32 is tightened to fix the connector 3 to the compressor shaft.
[0043] Specifically, each of the three counterweights 2 has a flow guide 4 fixed at both ends, and a sealing gasket 5 is bonded to the lower surface of each of the three counterweights 2.
[0044] Furthermore, the guide element 4 provided on the counterweight 2 can guide the flow, so that when the counterweight 2 is driven to rotate, the guide element 4 can guide the lubricating oil inside the compressor, reducing the resistance of the lubricating oil to the rotation of the counterweight 2.
[0045] Specifically, each of the three counterweights 2 has a sound insulation plate 6 fixed inside, and the lower surface of the sound insulation plate 6 has several noise reduction holes 7.
[0046] Furthermore, the sound insulation plate 6 installed inside the counterweight 2, in conjunction with the noise reduction hole 7, can absorb the noise generated during the operation of the compressor, thereby playing a certain role in noise reduction and improving practicality.
[0047] In use, the connecting piece 3 on the balance plate body 1 connects the through hole in the connecting piece 3 to the compressor shaft. The connecting groove 31 in the connecting piece 3 can cooperate with the key block on the compressor shaft to limit the movement and effectively reduce the possibility of the connecting piece 3 shifting. After assembly, the fixing bolt 32 is tightened to fix the connecting piece 3 to the compressor shaft for easy use. The guide piece 4 on the counterweight 2 can guide the flow of lubricating oil inside the compressor when the counterweight 2 is rotated, reducing the resistance of the lubricating oil to the rotation of the counterweight 2. The sealing gasket 5 can seal between multiple counterweights 2. The sound insulation plate 6 in the counterweight 2, in conjunction with the noise reduction hole 7, can absorb the noise generated by the compressor during operation, thereby playing a certain role in noise reduction and improving practicality.
[0048] In summary, when the powder metallurgy compressor balance plate is in use, multiple counterweights 2 can be positioned through the limiting holes 25 on the counterweights 2, in cooperation with the limiting blocks 26. This effectively reduces the possibility of misalignment during the assembly of the counterweights 2. After assembly, the fixing nuts 23 are screwed onto the limiting screws 21 and tightened. With the cooperation of the elastic rubber pads 22, multiple counterweights 2 can be fixed in a limited position. The elastic rubber pads 22 also provide a certain buffering effect, effectively reducing the possibility of damage to the counterweights 2. Furthermore, the sound insulation plates 6 installed inside the counterweights 2, in cooperation with the noise reduction holes 7, can absorb the noise generated during the operation of the compressor, thus playing a certain role in noise reduction.
[0049] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0050] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0051] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A balance plate for a powder metallurgy compressor, comprising a balance plate body (1), characterized in that: The upper end of the balance plate body (1) is provided with a balancing component for balancing the compressor, and one side of the balance plate body (1) is provided with a fixing component for fixing. The balancing component includes a counterweight (2), and there are three counterweights (2). The three counterweights (2) are installed at equal intervals on the upper end of the balance plate body (1). Each of the three counterweights (2) has two limiting screws (21) that are fixedly connected to the balance plate body (1) through it. An elastic rubber pad (22) is installed on the upper surface of one of the counterweights (2).
2. The balance plate of a powder metallurgy compressor according to claim 1, characterized in that: The upper surface of the elastic pad (22) is connected to a fixing nut (23) that is threadedly connected to the limiting screw (21).
3. The balance plate of a powder metallurgy compressor according to claim 2, characterized in that: Each of the three counterweights (2) has a limiting groove (24) inside.
4. The balance plate of a powder metallurgy compressor according to claim 3, characterized in that: Each of the three counterweights (2) has a limiting hole (25) on its upper surface, and a limiting block (26) is inserted into the limiting hole (25).
5. A balance plate for a powder metallurgy compressor according to claim 4, characterized in that: The fixing component includes a connector (3), which is integrally fixed to the inner wall of the balance plate body (1).
6. A balance plate for a powder metallurgy compressor according to claim 5, characterized in that: The connector (3) has a connecting groove (31) inside, and two fixing bolts (32) are installed on the outer wall of the connector (3).
7. A balance plate for a powder metallurgy compressor according to claim 6, characterized in that: Each of the three counterweights (2) has a flow guide (4) fixed at both ends, and a sealing gasket (5) is bonded to the lower surface of each of the three counterweights (2).
8. A balance plate for a powder metallurgy compressor according to claim 7, characterized in that: The interior of each of the three counterweights (2) is fixed with a sound insulation plate (6), and the lower surface of the sound insulation plate (6) is provided with several noise reduction holes (7).