一种止回阀
By improving the structure of the air conditioning check valve and adopting measures such as a split design and a guide shaft anti-rotation plane, the noise problem caused by frequent opening and closing of the valve core was solved, resulting in noise reduction and improved processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO TAIJIAKANG REFRIGERATION TECHNOLOGY CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-17
AI Technical Summary
The one-way valves used in existing air conditioners have structural limitations that cause the valve core to open and close frequently or vibrate, resulting in noise problems and affecting the customer experience.
Design a check valve that adopts a split structure and features a guide shaft anti-rotation plane and limiting protrusions to prevent the valve core from rotating over a wide range. Combined with a pressure relief hole design, it reduces mechanical noise.
It effectively prevents valve core rotation, reduces noise, improves processing efficiency, and reduces manufacturing costs.
Smart Images
Figure CN224516051U_ABST
Abstract
Claims
1. A check valve characterized by, The valve includes a valve body with an internal channel, a valve seat, a retaining ring, and a valve core located within the internal channel. One end of the valve seat has a valve port, and the retaining ring and the valve port end of the valve seat form a valve core cavity. The valve core is movably disposed within the valve core cavity. The valve core has an annular guide portion and a guide shaft disposed on the guide portion. The retaining ring has a first guide section, a second guide section, and a third guide section. The first guide section is sleeved on the valve port end of the valve seat, the second guide section is correspondingly disposed with the annular guide portion of the valve core, and the third guide section is correspondingly disposed with the guide shaft of the valve core. At least one anti-rotation plane is provided on the side wall of the guide shaft.
2. The check valve of claim 1, wherein An anti-rotation plane is provided on the side wall of the guide shaft, and a limiting protrusion is provided on the inner wall of the third guide section. The limiting protrusion is provided in correspondence with the anti-rotation plane.
3. The check valve of claim 2, wherein, The top of the second guide section is provided with a first pressure relief hole, and the top of the third guide section is provided with a second pressure relief hole.
4. The check valve of claim 3, wherein The first pressure relief hole is provided in multiple locations.
5. The check valve of claim 3, wherein The check valve also includes an anti-rotation plate, which is located inside the second guide section and is corresponding to the top of the second guide section. The anti-rotation plate is provided with a flow hole that matches the first pressure relief hole, and a guide hole through which a guide shaft can pass is designed at the center of the anti-rotation plate.
6. The check valve of claim 5, wherein, The guide hole is provided with a limiting protrusion structure, which is correspondingly provided with the anti-rotation plane.
7. The check valve of claim 1, wherein The guide shaft has a polygonal prism structure.
8. The check valve of claim 1, wherein The guide seat and guide shaft of the valve core are either integrally formed or detachably connected.
9. The check valve according to claim 1, characterized in that, The valve body has a split structure, consisting of a first valve body and a second valve body connected to one end of the first valve body. The valve seat, retaining ring, and valve core are located in the internal channel of the first valve body.
10. The check valve of claim 9, wherein, The first valve body and the second valve body have different wall thicknesses.