A distributor for a rotary compressor
By integrally molding long straight pipes, bent pipes, and short straight pipes and interfering with the pump body cylinder, the high cost and leakage risk caused by the numerous parts of the rotary compressor distributor are solved, achieving cost savings and improved reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BITZER ROTARY COMPRESSOR (JIANGSU) CO LTD
- Filing Date
- 2025-09-11
- Publication Date
- 2026-07-24
AI Technical Summary
The existing rotary compressor distributor has too many parts and complicated welding procedures, resulting in high material and labor costs, increased risk of leakage, and reduced reliability.
The long straight pipe, the bent pipe, and the short straight pipe are integrally formed. The short straight pipe is interference-fitted with the pump body cylinder and welded. It is equipped with chamfers and bosses to simplify the assembly steps and reduce the copper pipe fitting.
Reduce processes, lower costs, improve reliability, reduce leakage risk, and save on material and labor costs.
Smart Images

Figure CN224551831U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a liquid distributor, and more particularly to a liquid distributor for a rotary compressor. Background Technology
[0002] Currently, the distributor of a rotary compressor is mainly composed of multiple parts, including the pump suction pipe, the shell suction pipe assembly, and the distributor bend, all welded together. Traditional distributor manufacturing requires the assembly and welding of these multiple parts. The numerous and scattered components increase the number of welding and other processing steps, making the process cumbersome and inefficient. The use of multiple parts and the complex welding process also leads to higher material and labor costs. Furthermore, too many weld points increase the risk of leakage, affecting the compressor's reliability. Therefore, reducing the number of parts and the welding process has a very positive effect on reducing costs and increasing reliability. Utility Model Content
[0003] Purpose of the utility model: The purpose of this utility model is to provide a distributor for a rotary compressor to solve the above-mentioned problems.
[0004] Technical solution: A distributor for a rotary compressor, comprising an inlet pipe, a cylinder, and an outlet pipe, wherein the upper part of the cylinder is connected to the inlet pipe and the lower part is connected to the outlet pipe;
[0005] The air outlet pipe includes a long straight pipe, a bend pipe, and a short straight pipe. The long straight pipe, the bend pipe, and the short straight pipe are integrally formed and connected in sequence. The long straight pipe extends into the cylinder and is fixed thereto, while the short straight pipe is connected to the pump body cylinder.
[0006] Furthermore, the short straight pipe and the pump body cylinder are interference fit.
[0007] Ideally, the short straight pipe should be welded to the pump body cylinder for a sealed connection.
[0008] Furthermore, the connection end between the short straight pipe and the pump body cylinder is chamfered, and a boss is provided on the outer circumference of the other end of the short straight pipe.
[0009] Ideally, the chamfer angle should be 0–5°.
[0010] Furthermore, the present invention also includes an upper partition and a lower partition. The upper partition and the lower partition are arranged parallel to each other along the axis inside the cylinder and fixed to the cylinder. The upper partition is located between the air inlet pipe and the air outlet pipe, and the long straight pipe passes through the lower partition.
[0011] This utility model integrates a long straight pipe, a bent pipe, and a short straight pipe into one piece. The short straight pipe is provided with a boss, which can be used to assemble with the air intake hole of the pump body cylinder, reducing assembly steps and saving costs. At the same time, it reduces the need for one copper pipe (bent pipe and short straight pipe) assembly, thereby reducing the risk of leakage.
[0012] Beneficial effects: Compared with the prior art, the advantages of this utility model are:
[0013] Compared with ordinary liquid separators, this invention can reduce the number of processes, save labor and equipment costs, and at the same time reduce the amount of copper materials and solder, significantly reducing costs, improving the reliability of the liquid separator, and reducing the risk of leakage. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a structural diagram of a bend and a short straight pipe;
[0016] Figure 3 This is a schematic diagram of a short straight pipe. Detailed Implementation
[0017] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.
[0018] A distributor for a rotary compressor, such as Figures 1-3 As shown, it includes an air inlet pipe 1, an upper baffle 2, a lower baffle 3, a cylinder 4, and an air outlet pipe 5.
[0019] The upper part of the cylinder 4 is connected to the air inlet pipe 1, and the lower part is connected to the air outlet pipe 5. The upper partition 2 and the lower partition 3 are arranged parallel to each other along the axis of the cylinder 4 and fixed to the cylinder 4. The upper partition 2 is located between the air inlet pipe 1 and the air outlet pipe 5, and one end of the air outlet pipe 5 passes through the lower partition 3.
[0020] The air outlet pipe 5 includes a long straight pipe 51, a bend pipe 52, and a short straight pipe 53. The long straight pipe 51, the bend pipe 52, and the short straight pipe 53 are integrally formed and connected in sequence. One end of the long straight pipe 51 extends into the cylinder 4, and the outer circumference of the other end is welded and fixed to the bottom of the cylinder 4. The short straight pipe 53 is connected to the pump body cylinder.
[0021] The short straight pipe 53 is interference-fitted with the pump body cylinder, and the gap between the two is sealed by welding to form a sealed whole. The connection end of the short straight pipe 53 to the pump body cylinder is chamfered, and the other end of the short straight pipe 53 is provided with a boss 6 on its outer circumference. The chamfer angle is 0 to 5°. The boss 6 can be quickly impacted to achieve a fit with the air intake hole of the pump body cylinder.
[0022] This utility model integrates a long straight pipe, a bent pipe, and a short straight pipe into one piece. The short straight pipe is provided with a boss, which can be used to assemble with the air intake hole of the pump body cylinder, reducing assembly steps and saving costs. At the same time, it reduces the need for one copper pipe (bent pipe and short straight pipe) assembly, thereby reducing the risk of leakage.
Claims
1. A distributor for a rotary compressor, characterized in that: It includes an air inlet pipe (1), a cylinder (4), and an air outlet pipe (5). The upper part of the cylinder (4) is connected to the air inlet pipe (1), and the lower part is connected to the air outlet pipe (5). The air outlet pipe (5) includes a long straight pipe (51), a bend pipe (52), and a short straight pipe (53). The long straight pipe (51), the bend pipe (52), and the short straight pipe (53) are integrally formed and connected in sequence. The long straight pipe (51) extends into the cylinder (4) and is fixed thereto. The short straight pipe (53) is connected to the pump body cylinder.
2. The distributor for a rotary compressor according to claim 1, characterized in that: The short straight pipe (53) is interference-fitted with the pump body cylinder.
3. A distributor for a rotary compressor according to claim 1 or 2, characterized in that: The short straight pipe (53) is connected to the pump body cylinder by welding seal.
4. The distributor for a rotary compressor according to claim 1, characterized in that: The connection end of the short straight pipe (53) to the pump body cylinder is chamfered, and the other end of the short straight pipe (53) is provided with a boss (6) on its outer circumference.
5. The distributor for a rotary compressor according to claim 4, characterized in that: The chamfer angle is 0 to 5°.
6. The distributor for a rotary compressor according to claim 1, characterized in that: It also includes an upper partition (2) and a lower partition (3). The upper partition (2) and the lower partition (3) are arranged parallel to each other along the axis inside the cylinder (4) and fixed to the cylinder (4). The upper partition (2) is located between the air inlet pipe (1) and the air outlet pipe (5), and the long straight pipe (51) passes through the lower partition (3).