Check valve and refrigeration system

By adjusting the dimensions of the reinforcing members in the check valve, especially reducing the size of the inner reinforcing member in the middle position, the problems of high material cost and heavy weight in the prior art are solved, achieving the effect of reducing cost and weight, while maintaining the rigidity and sealing performance of the valve plate.

CN224433505UActive Publication Date: 2026-06-30JIANGSU DUNAN ENVIRONMENTAL CONTROL SYST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU DUNAN ENVIRONMENTAL CONTROL SYST CO LTD
Filing Date
2025-08-11
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The dimensions of the reinforcing parts in existing check valves have not been optimized according to the stress conditions at different positions on the valve plate, resulting in high material costs, heavy weight, and poor sealing performance.

Method used

A check valve is designed by adjusting the size of the reinforcing members at different positions on the valve plate, especially reducing the width and/or thickness of the inner reinforcing member in the middle position, to ensure that the outer reinforcing member provides support in the high-stress area, while avoiding the accumulation of redundant material in the middle area, and adopting a gradual reinforcement structure.

Benefits of technology

It effectively reduces valve plate deformation, maintains rigidity and sealing effect, reduces material costs and product weight, and improves the overall lightweight level of the structure.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224433505U_ABST
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Abstract

This application relates to a check valve and a refrigeration system, including a valve body, a valve plate, a drive assembly, and a reinforcing structure. The valve body has a channel for fluid flow, and the valve plate is installed within the channel. The drive assembly includes a rotating shaft and a driver for driving the shaft to rotate about its own axis. Both ends of the rotating shaft pass through the valve body, and the shaft is connected to the valve plate via the reinforcing structure, enabling it to rotate the valve plate relative to the valve body to block or open the channel. The reinforcing structure includes at least three reinforcing members spaced apart along the axial direction of the rotating shaft. The two reinforcing members located on either side of the rotating shaft are defined as outer reinforcing members, and the reinforcing members located between the two outer reinforcing members are defined as inner reinforcing members. The thickness of the inner reinforcing members is less than the thickness of the outer reinforcing members, and / or the width of the inner reinforcing members is less than the width of the outer reinforcing members. By adjusting the dimensions of the reinforcing members at different positions, not only is the stiffness, strength, and sealing effect of the check valve unaffected, but material costs can also be saved and product weight reduced.
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Claims

1. A check valve characterized by, include: Valve body (10), the valve body (10) being constructed with a channel for fluid flow; Valve plate (20), the valve plate (20) is installed in the channel; The drive assembly (30) includes a rotating shaft (310) and a driver (320) for driving the rotating shaft (310) to rotate about its own axis. Both ends of the rotating shaft (310) are inserted through the valve body (10), and the rotating shaft (310) is connected to the valve plate (20) through a reinforcing structure, and can drive the valve plate (20) to rotate relative to the valve body (10) to block or open the channel. The reinforcing structure includes at least three reinforcing members (401) arranged axially spaced along the pivot (310). Two reinforcing members located on both sides along the pivot (310) are defined as outer reinforcing members (410), and the reinforcing members located between the two outer reinforcing members (410) are all inner reinforcing members (420). The direction of the reinforcing member (401) in the same direction as the pivot (310) is defined as the width direction, and the direction in the same direction as the thickness direction of the valve plate (20) is defined as the thickness direction. The thickness of the inner reinforcing member (420) is less than the thickness of the outer reinforcing member (410), and / or the width of the inner reinforcing member (420) is less than the width of the outer reinforcing member (410).

2. The check valve of claim 1, wherein When the thickness of the inner reinforcing member (420) is less than the thickness of the outer reinforcing member (410), the thickness of the outer reinforcing member (410) is defined as H1, and the thickness of the inner reinforcing member (420) is defined as H2, where H2 satisfies: 0.5H1 < H2 < 0.8H1.

3. The check valve according to claim 1, characterized in that, When the width of the inner reinforcing member (420) is less than the width of the outer reinforcing member (410), the width of the outer reinforcing member (410) is defined as K1, and the width of the inner reinforcing member (420) is defined as K2, where K2 satisfies: 0.5K1 < K2 < 0.8K1.

4. The check valve according to claim 1, characterized in that, When the thickness of the inner reinforcing member (420) is less than the thickness of the outer reinforcing member (410), and the width of the inner reinforcing member (420) is less than the width of the outer reinforcing member (410), the thickness of the outer reinforcing member (410) is defined as H1, the thickness of the inner reinforcing member (420) is defined as H2, the width of the outer reinforcing member (410) is defined as K1, and the width of the inner reinforcing member (420) is defined as K2. H1, H2, K1 and K2 satisfy 0.5H1×K1 < H2×K2 <0.8H1×K1.

5. The check valve according to any one of claims 1 to 4, characterized in that, There are at least two inner reinforcing members (420). Along the axial direction of the rotating shaft (310), when the number of inner reinforcing members (420) is even, the two inner reinforcing members (420) located in the middle are both defined as the first reinforcing member (421); when the number of inner reinforcing members (420) is odd, the inner reinforcing member (420) located in the middle is defined as the first reinforcing member (421). The width and / or thickness of each of the reinforcing members (401) arranged sequentially from the outer reinforcing member (410) toward the first reinforcing member (421) tends to decrease.

6. The check valve according to claim 5, characterized in that, The width and / or thickness of each of the reinforcing members (401) arranged sequentially from the outer reinforcing member (410) toward the first reinforcing member (421) show a trend of decreasing uniformly in sequence.

7. The check valve according to claim 5, characterized in that, The valve body (10) is provided with an inlet (101) and an outlet (102) connected to the channel, and each of the reinforcing members (401) is provided on the side of the valve plate (20) facing the outlet (102).

8. The check valve according to claim 7, characterized in that, There are two valve plates (20), which are arranged sequentially along the length of the reinforcing member (401). Each valve plate (20) has a corresponding rotating shaft (310) and a reinforcing structure. The two rotating shafts (310) are linked together.

9. The check valve according to claim 8, characterized in that, At least one of the valve plates (20) is provided with a counterweight (50) on the side facing the outlet (102). When the channel is opened by the valve plate (20), the counterweight (50) causes the valve plate (20) to rotate relative to the valve body (10) and block the channel.

10. A refrigeration system, characterized in that, Includes the check valve as described in any one of claims 1 to 9.