Compressor oil suction pipe assembly
By improving the structure of the compressor's oil suction pipe assembly, and adopting a bent contact ring and a three-drain spiral blade design, the problem of oil suction pipe core detachment was solved, thereby improving oil delivery efficiency and compressor stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAXING ZHOUYANG PLASTIC IND CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, the balance foot cannot effectively prevent the oil suction tube core from rising, causing the support to detach from the oil suction tube core, affecting the normal operation of the compressor and the oil delivery efficiency.
Design a compressor oil suction pipe assembly, which uses an oil suction pipe and a core that work together. The bottom of the oil suction pipe is bent and has an abutment ring. The outer wall of the core has three flow-guiding spiral blades. The blades are fitted with the inner wall of the oil suction pipe with a clearance. The bottom of the core has a groove to prevent vertical movement. Combined with a rectangular tooth profile and a stop block structure, self-balancing rotation is achieved.
It improves the oil filling rate and delivery flow rate, enhances the oil delivery efficiency, reduces wear on the oil suction pipe and core, and ensures normal operation of the compressor.
Smart Images
Figure CN224579447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressors, specifically a compressor oil suction pipe assembly. Background Technology
[0002] Refrigeration compressors typically have an oil supply mechanism, which provides sufficient lubricating oil to reduce friction between friction pairs and remove frictional heat during compressor operation, thereby reducing compressor noise. It also acts as a sealing gap to ensure normal operation and long-term operation of the compressor.
[0003] For example, patent CN219827074U discloses a self-balancing oil pumping mechanism and a compressor. This utility model's self-balancing oil pumping mechanism includes a crankshaft, an oil suction pipe, an oil suction pipe core, and a suspension spring. When applied to a compressor, the end of a support member on the suspension spring contacts the bottom end of a groove on the lower end face of the oil suction pipe core, leaving a gap between the side of the support member and the side wall of the groove. Simultaneously, the suspension spring, through a balancing foot, blocks and limits the oil suction pipe core. Thus, during compressor operation, the crankshaft drives the oil suction pipe to rotate relative to the oil suction pipe core. The refrigerant oil rises and flows along the gap between the side of the oil suction pipe core and the side wall of the oil suction pipe. The oil suction pipe core moves freely in a 360° direction at the contact point between the end of the support member and the bottom end of the groove, achieving self-balancing and further reducing contact wear between the oil suction pipe core and the oil suction pipe.
[0004] When the above-mentioned patent is used, during the operation of the compressor, the crankshaft drives the oil suction pipe to rotate relative to the oil suction pipe core. The refrigeration oil rises and flows along the gap between the side of the oil suction pipe core and the side wall of the oil suction pipe. The refrigeration oil enters the assembly hole and continues to flow upward along the oil passage on the crankshaft, so that the refrigeration oil is delivered to the friction pairs of the various moving parts of the compressor. However, the disadvantage of the above-mentioned patent is that: the above-mentioned patent uses a balance foot to block the rotation of the oil suction pipe core, but it cannot prevent the oil suction pipe core from rising, which leads to the support component separating from the oil suction pipe core.
[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content
[0006] The purpose of this invention is to provide a compressor oil suction pipe assembly to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A compressor oil suction pipe assembly includes an oil suction pipe and a core that cooperate with each other. The oil suction pipe is a cylindrical device with openings at the top and bottom, and the bottom of the oil suction pipe is bent outward at a 90-degree angle to form an abutment ring. The core is inserted into the oil suction pipe from the lower opening. The core is a shell with an opening at the bottom and a closed top. The outer wall of the core is provided with a flow-guiding spiral blade. The outer wall of the core is abutted against and extends outward to form a stop block, and the abutment ring of the oil suction pipe overlaps the stop block.
[0009] Furthermore, the drainage spiral blades are provided in three sections, and the three drainage spiral blades are coaxially arranged.
[0010] Furthermore, the outer wall of the drain spiral blade and the inner wall of the oil suction pipe are in clearance fit, and the clearance should be controlled between 0.05-0.15mm.
[0011] Furthermore, the tooth profile of the drainage spiral blade is rectangular.
[0012] Furthermore, two slots are symmetrically formed at the bottom of the core, and the cross-section of the slots is rectangular.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] Because there are three guide spiral blades, the spacing between adjacent guide spiral blades is small and the blade density is high. This design can improve the material (oil) filling rate and the conveying flow rate is higher in a single rotation. The conveying efficiency of oil is higher than that of a single blade. Attached Figure Description
[0015] Figure 1 This is an exploded view of a compressor oil suction pipe assembly.
[0016] Figure 2 This is a schematic diagram of the core structure in an oil suction pipe assembly of a compressor.
[0017] Figure 3 This is a schematic diagram of the assembly of an oil suction pipe assembly for a compressor.
[0018] Figure 4 This is a schematic diagram of a compressor oil suction pipe assembly mounted on a suspension spring. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0020] Please see Figure 1-3 A compressor oil suction pipe assembly includes an oil suction pipe 1 and a core pipe 2 that are configured to cooperate with each other.
[0021] Similar to the prior art, the oil suction pipe in this solution is also installed in the mounting hole at the lower end of the crankshaft;
[0022] The oil suction pipe 1 is a cylindrical device with openings at the top and bottom. The bottom of the oil suction pipe 1 is bent outwards at a 90-degree angle and has an abutment ring 101. The pipe core 2 is inserted into the oil suction pipe 1 from its lower opening.
[0023] The core 2 is a shell with an open bottom and a closed top. Three spiral blades 3 are provided on the outer wall of the core 2, and these three spiral blades 3 are coaxially arranged. The outer wall of the spiral blades 3 and the inner wall of the oil suction pipe 1 are in clearance fit, and this clearance should be controlled between 0.05-0.15mm. During use, since this design is used to lift the compressor oil, the oil will form an oil film in the gap between the outer wall of the spiral blades 3 and the inner wall of the oil suction pipe 1, allowing the oil suction pipe 1 and the core 2 to rotate relative to each other without obstruction. As the oil suction pipe 1 rotates relative to the core 2, the refrigeration oil spirals upwards along the spiral blades 3. During lifting, the oil mainly enters from the lower opening of the oil suction pipe 1 and is guided to the upper end of the oil suction pipe 1 through the threads of the spiral blades 3.
[0024] In this design, because there are three flow-guiding spiral blades 3, the spacing between adjacent flow-guiding spiral blades 3 is small and the blade density is high. This design can improve the material (oil) filling rate and the conveying flow rate is higher in a single rotation. The conveying efficiency of oil is higher than that of a single blade.
[0025] In this design, the tooth profile of the drainage spiral blade 3 is rectangular.
[0026] The outer wall of the core tube 2 is provided with a stop block 4 extending outward. The abutment ring 101 of the oil suction pipe 1 overlaps with the stop block 4, thereby preventing the core tube 2 from moving up and down relative to the oil suction pipe 1, while being immersed in the compressor oil.
[0027] In this design, two slots 5 are symmetrically formed at the bottom of the core 2. The cross-section of the slots 5 is rectangular. The height of the slots 5 should be less than the height of the support, and the width of the slots 5 should be greater than the width of the support.
[0028] Similar to those in the background art, such as Figure 4 As shown, the slot 5 is attached to the support of the suspension spring. Since the end of the support is curved and the cross-section of the slot 5 is rectangular, the contact between the slot 5 and the end of the support is a line contact, which further reduces the contact area between the bottom of the slot 5 and the end of the support 41, thereby improving the flexibility of the core 2 in achieving self-balancing.
[0029] Similar to that mentioned in the background art, this solution is applied to a compressor. When this utility model is used, the end of the support on the suspension spring contacts the bottom end of the slot 5. During the operation of the compressor, the crankshaft drives the oil suction pipe to rotate relative to the core 2. The refrigeration oil rises and flows along the guide spiral blades 3 of the core 2. The refrigeration oil enters the oil passage on the crankshaft and continues to flow upward, so that the refrigeration oil is delivered to the friction pairs of each moving part of the compressor.
[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
Claims
1. A compressor oil suction tube assembly comprising an oil suction tube and a tube core disposed in cooperating relation, characterized by, The oil suction pipe is a cylindrical device with openings at the top and bottom. The bottom of the oil suction pipe is bent outward at a 90-degree angle and has an abutment ring. The core is inserted into the oil suction pipe from the lower opening. The core is a shell with an opening at the bottom and a closed top. The outer wall of the core is provided with a flow-guiding spiral blade. The outer wall of the core is abutted and extended outward with a stop block. The abutment ring of the oil suction pipe overlaps the stop block.
2. A compressor oil suction pipe assembly according to claim 1, wherein The drainage spiral blades are provided in three sections, and the three drainage spiral blades are arranged coaxially.
3. A compressor oil suction pipe assembly according to claim 1, wherein The outer wall of the drain spiral blade and the inner wall of the oil suction pipe are fitted with a clearance, and the clearance is controlled between 0.05-0.15mm.
4. A compressor oil suction tube assembly as set forth in claim 1 wherein, The tooth profile of the drainage spiral blade is rectangular.
5. A compressor oil suction tube assembly as set forth in claim 1 wherein, The bottom of the tube also has two symmetrical slots, and the cross-section of the slots is rectangular.