一种膨胀阀
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENGSEN ELECTRONIC VALVE (ZHEJIANG) CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing expansion valves are prone to generating turbulence and noise during fluid flow, especially in two-phase flow conditions, which affects the product quality of refrigeration equipment and air conditioners.
A noise reduction component, including a cylindrical part and a flow-blocking part, is installed inside the expansion valve. By blocking the liquid flow along the axial direction and changing the flow direction, the liquid flow velocity in the valve body is reduced and the mixing is more uniform, thereby reducing noise.
It effectively reduces fluid flow noise, improves the uniformity of fluid mixing, and enhances the operating quality of refrigeration equipment and air conditioning.
Smart Images
Figure CN224517070U_ABST
Abstract
Claims
1. An expansion valve, comprising a valve core (20) and a tubular valve body (10), wherein the valve core (20) is disposed in the inner cavity of the valve body (10), and a valve hole (21) communicating with the inner cavity of the valve body (10) is formed on the valve core (20), characterized in that, The expansion valve also includes a noise reduction component (30), which is disposed in the inner cavity of the valve body (10). The noise reduction component (30) includes a cylindrical part (31) and a flow-blocking part (32). The first end of the cylindrical part (31) is away from the valve hole (21) and forms an open structure. The second end of the cylindrical part (31) faces the valve hole (21) and is provided with the flow-blocking part (32). The flow-blocking part (32) is disposed at a distance from the valve hole (21). At least one noise reduction channel (33) is provided on the side wall of the cylindrical part (31). The flow-blocking part (32) is used to block the liquid flow in the valve body (10) from flowing through the noise reduction component (30) along the axial direction of the valve hole (21) and to make the liquid flow between the valve hole (21) and the noise reduction channel (33).
2. The expansion valve according to claim 1, characterized by, The cylindrical section (31) is divided into a connecting section (311) and a noise reduction section (312) along the axial direction. The outer wall of the connecting section (311) is attached to and fixedly connected to the inner wall of the valve body (10). A gap is formed between the outer wall of the noise reduction section (312) and the inner wall of the valve body (10). The noise reduction channel (33) is disposed on the side wall of the noise reduction section (312).
3. The expansion valve according to claim 2, wherein The valve body (10) includes a valve seat (11), a first connecting pipe (12), and a second connecting pipe (13). The first connecting pipe (12) is coaxially connected to the valve seat (11), and the second connecting pipe (13) is connected to the side wall of the valve seat (11) and communicates with the inner cavity of the valve seat (11). The first connecting pipe (12) includes an interface section (121) and a main pipe section. The interface section (121) is connected to the valve seat (11), and the inner diameter of the interface section (121) is larger than the inner diameter of the main pipe section. The connecting section (311) is disposed in the main pipe section, and the noise reduction section (312) is disposed in the interface section (121) and forms a gap with the inner wall of the interface section (121).
4. The expansion valve according to any one of claims 1 to 3, characterized in that, The flow-blocking part (32) is provided with a through hole (34), which communicates with the inner cavity of the cylindrical part (31), and the diameter of the through hole (34) is smaller than the inner diameter of the cylindrical part (31).
5. The expansion valve according to any one of claims 1 to 3, characterized in that, The valve core (20) is provided with a first slow flow hole (22), which communicates with the valve hole (21). The first slow flow hole (22) is located between the valve hole (21) and the flow blocking part (32), and the inner diameter of the first slow flow hole (22) is larger than the inner diameter of the valve hole (21).
6. The expansion valve according to claim 5, wherein The valve core (20) is also provided with a second slow flow hole (23). The second slow flow hole (23) and the first slow flow hole (22) are respectively provided at opposite ends of the valve hole (21). The second slow flow hole (23) is connected to the valve hole (21) and its inner diameter is larger than that of the valve hole (21).
7. The expansion valve according to any one of claims 1 to 3, characterized by The cylindrical part (31) is provided with a plurality of noise reduction channels (33), and the plurality of noise reduction channels (33) are evenly distributed around the axis of the cylindrical part (31).
8. The expansion valve according to any one of claims 1 to 3, characterized by The noise reduction component (30) is made of metal and is welded or riveted to the valve body (10).
9. The expansion valve according to any one of claims 1 to 3, characterized by The projected area of the flow-blocking part (32) in the axial direction is larger than the diameter of the valve hole (21).
10. The expansion valve according to any one of claims 1 to 3, characterized in that, The expansion valve also includes a valve needle (60) and a rotor assembly (40). One end of the valve needle (60) is opposite to the valve hole (21). The rotor assembly (40) is used to drive the valve needle (60) to move closer to or away from the valve hole (21) to adjust the opening of the expansion valve. The valve needle (60) and the noise reduction component (30) are respectively disposed at opposite ends of the valve core (20).