一种测试用发烟装置
By designing a smoke-generating device for testing that includes a smoke-generating section, a control section, and a smoke-collecting nozzle, the smoke concentration and output are automatically adjusted, solving the problems of high cost, low efficiency, and equipment pollution in existing technologies, and realizing efficient and reliable smoke detector testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CRRC QINGDAO SIFANG CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for testing the sensitivity of smoke detectors in rail vehicle fire detection systems suffer from problems such as high cost, low efficiency, smoke dispersion, and equipment contamination.
A smoke-generating device for testing was designed, comprising a smoke-generating unit, a control unit, and a smoke-collecting nozzle. The fan motor speed is controlled by PWM to automatically adjust the smoke output. The smoke-collecting nozzle prevents smoke dispersion and has a detachable structure for easy cleaning.
It improves detection efficiency, avoids equipment contamination, ensures the accuracy of smoke concentration and the reliability of testing, and extends the service life of the device.
Smart Images
Figure CN224518690U_ABST
Abstract
Claims
1. A smoking article for testing, characterised in that, include: Smoke-generating section, control section, and smoke-collecting nozzle; The smoke-generating part is provided with a smoke-generating chamber that can accommodate multiple incense sticks, and a smoke outlet is provided on one side of the smoke-generating chamber; the smoke-generating chamber is connected to the air inlet chamber, and an air inlet is provided at the bottom of the air inlet chamber; an air inlet channel is provided on the side of the air inlet chamber away from the smoke outlet, and the air inlet channel is connected to the smoke-generating chamber; a first fan is provided in the air inlet channel for drawing air into the air inlet channel. The control unit is equipped with a flue that communicates with the smoke generator, and the end of the flue is connected to a smoke collection nozzle; a second fan is provided in the flue to send smoke into the smoke collection nozzle.
2. A smoking article for testing according to claim 1, wherein The smoke-generating part and the control part are detachably connected, and the smoke-collecting nozzle and the control part are detachably connected.
3. A smoking article for testing according to claim 1 or 2, wherein The smoke-generating unit and the control unit are connected by a snap-fit connector, and the signal transmission cable is also connected between the smoke-generating unit and the control unit by a plug connector.
4. A smoking apparatus for testing as defined in claim 1, wherein The smoke collection nozzle has a conical structure, with the opening diameter of the smoke inlet being larger than that of the smoke outlet.
5. A smoking article for testing according to either claim 1 or claim 4, wherein, Also includes: An extension nozzle, which is made of flexible material, is fitted onto the smoke collection nozzle.
6. A smoking apparatus for testing as defined in claim 1, wherein The smoke-generating chamber is provided with multiple air inlets on the side opposite to the smoke outlet, and the air inlet channel is connected to the smoke gun through the air inlets; external air can enter the smoke-generating chamber through the air inlet channel under the action of the first fan to help burn the incense stick.
7. A smoking apparatus for testing according to claim 1, wherein The top of the smoke-generating chamber is provided with an incense inlet, which is equipped with a screw-on cap.
8. A smoking apparatus for testing as defined in claim 1, wherein A smoke sensor is located near the smoke collection nozzle in the control unit. The control unit also contains a main controller, which is connected to the smoke sensor, the first fan, and the second fan, respectively. The rotation of the first fan and the second fan is controlled by the main controller.
9. A smoking apparatus for testing as defined in claim 8, wherein The first fan is an intake fan, and the second fan is an exhaust fan.
10. A smoking apparatus for testing as defined in claim 8, wherein It also includes a button circuit, which includes a power switch button and a gear selector button; The power switch button is used to connect the power supply to the controller, smoke sensor, first fan and second fan; The system has multiple speed control buttons, each connected to the controller, and each button corresponds to a different fan speed. Alternatively, the speed control buttons can be a cycle button, with multiple consecutive presses corresponding to different fan speeds.