Fire smoke extraction device
By installing an installation box and a water spray structure in the fire smoke exhaust system, the problem of motor overheating due to high temperature and dense smoke is solved by using cold water to cool the motor, thus extending the service life of the motor and providing fire extinguishing function.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 内蒙古中云盛源科技发展集团有限公司
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-17
AI Technical Summary
In existing fire-fighting smoke extraction systems, the motor comes into direct contact with high-temperature smoke during a fire, causing the motor temperature to rise and affecting its service life.
An installation box is installed in the fire smoke exhaust device. The output shaft of the motor extends out of the installation box and is rotatably connected to it. The installation box is equipped with an annular cavity and a water inlet pipe. Cold water exchanges heat with the motor through the annular cavity. The water spray structure sprays atomized water into the air inlet to cool down the dense smoke. After absorbing heat in the annular cavity, the cold water is sprayed into the high-temperature dense smoke inside the shell.
It effectively reduces motor temperature, extends motor lifespan, and has a fire-extinguishing effect, preventing motor damage caused by high temperature and dense smoke.
Smart Images
Figure CN224516953U_ABST
Abstract
Claims
1. A fire-fighting smoke exhaust device, comprising a housing (1), characterized in that: The housing (1) is provided with a mounting box (2) inside, and a motor (4) is provided inside the mounting box (2). The output shaft of the motor (4) extends out of the mounting box (2) and is rotatably connected to the mounting box (2). The output shaft of the motor (4) is connected to a fan blade assembly (5). The mounting box (2) has an annular cavity (6) on its wall, and the annular cavity (6) is connected to an inlet pipe (7) and an outlet pipe (8). The air inlet of the housing (1) is provided with a water spray structure (9) that can spray atomized water to the air inlet position, and the water spray structure (9) is connected to the water outlet pipe (8).
2. A fire smoke extraction apparatus according to claim 1, characterised in that: The installation box (2) includes a box body (201), which is a hollow structure with one end open. The opening end of the box body (201) faces the air inlet of the shell (1), and the opening end of the box body (201) is detachably sealed with a box cover (202). The motor (4) is fixed on the cover (202), and the output shaft of the motor (4) passes through the cover (202) and is rotatably connected to the cover (202).
3. A fire smoke extraction apparatus according to claim 2, characterised in that: The box (201) is provided with a conductive structure I (10) inside, and the conductive structure I (10) is connected to a wire (11) extending out of the shell (1). The outer wall of the motor (4) is provided with a conductive structure II (12), and the conductive structure II (12) is connected to the power line (41) of the motor (4). After the box cover (202) is fixed to the box body (201), the conductive structure II (12) presses tightly against the conductive structure I (10).
4. A fire smoke extraction apparatus according to claim 3, characterised in that: The conductive structure I (10) includes two conductive plates (1001) that are simultaneously connected to the wire (11). The conductive plates (1001) are fixed inside the housing (201) by the mounting base I (13). The conductive structure II (12) includes two spring pieces (1201) that are simultaneously connected to the power line (41) of the motor (4). The spring pieces (1201) are fixed to the outer wall of the motor (4) by the mounting base II (14). After the cover (202) is fixed to the box body (201), each spring piece (1201) presses tightly against its corresponding conductive plate (1001).
5. A fire smoke extraction apparatus according to claim 4, characterised in that: The inner wall of the box cover (202) is fixed with a plug rod (15), and the opening end of the box body (201) is provided with a plug hole (16) corresponding to the plug rod (15). The insertion rod (15) is fully inserted into the insertion hole (16), and after the box cover (202) and the box body (201) are fixed, each spring piece (1201) presses tightly against its corresponding conductive plate (1001).
6. The fire smoke extraction apparatus of claim 1, wherein: The water spray structure (9) includes an annular pipe (901) connected to the water outlet pipe (8). The annular pipe (901) is sleeved at the air inlet of the housing (1). The annular pipe (901) is connected to a plurality of atomizing nozzles (902) that are distributed along the axial direction of the housing (1) and can spray atomized water to the air inlet of the housing (1).