Closed firefighting sprinkler head
By introducing a double-lever support structure into the closed fire sprinkler head, the problem of insufficient support force of the sealing component is solved, enabling its application in high-flow-rate environments, reducing the pressure requirements on the glass bulb, and avoiding the use of high-cost fusible alloy types.
WO2026025547A1 Publication Date: 2026-02-05NINGJIN APC INDUSTRIES CO LTD
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Patent Information
- Application Number
- PCT/CN2024/112261
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-07-31
- Filing Date
- 2024-08-15
- Publication Date
- 2026-02-05
AI Technical Summary
Technical Problem
Existing closed-type fire sprinkler heads suffer from insufficient support in high flow coefficient applications, and fusible alloy types are expensive and have limited suppliers.
Method used
The double-lever support structure enhances the support force of the sealing assembly. The design of the movable block body and movable block bracket distributes water pressure to reduce the pressure on the glass bulb, making it suitable for high-flow-rate applications.
Benefits of technology
It improves the support capacity of the sealing components, enabling its application in high flow coefficient environments, reduces the pressure requirements on the glass bulb, and avoids the need for high-cost fusible alloys.
✦ Generated by Eureka AI based on patent content.
Abstract
A closed firefighting sprinkler head, relating to the technical field of closed sprinkler heads. The closed firefighting sprinkler head comprises a sprinkler head body, wherein a water spray port is provided at one end of the sprinkler head body, and the water spray port is configured to connect to a water pipe; the sprinkler head body further comprises a hollowed-out cavity, and the inside of the hollowed-out cavity is configured for the mounting of a glass ball body; a sealing assembly is mounted at the water spray port; a double-lever support structure is connected to the end of the sealing assembly away from the water spray port, and the end of the double-lever support structure away from the sealing assembly abuts against one end of the glass ball body; the double-lever support structure comprises a movable-block body and a movable-block support; an annular snap-fit recess is provided in the inner wall of the sprinkler head body, and a first end of the movable-block body and a first end of the movable-block support are respectively arranged on two sides of the annular snap-fit recess; and a connecting portion is provided at a second end of the movable-block body, a connecting recess is provided at a second end of the movable-block support, and the connecting portion is arranged in the connecting recess. By means of the double-lever support structure, the support force on the sealing assembly can be effectively increased, such that the sprinkler head body can be applied to places having a large K-factor.
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