Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for the early detection of fires

A technology for early detection, equipment, applied in the field of equipment to perform the method, able to solve the problems of large size, expensive detectors, impossibility, etc.

Active Publication Date: 2011-11-23
MINIMAX LIMITED
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Disadvantages of this method are that electrical switching grids are required for sample suction and shielding grids in front of the detectors, so that the detectors are often expensive and of large size
In addition, the disadvantages may also include: only positive ions or negative ions are measured, so it is impossible to use the collection of positive and negative ions as a characteristic variable of a fire

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for the early detection of fires
  • Method and device for the early detection of fires
  • Method and device for the early detection of fires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] figure 1A schematic diagram of a device for the early detection of fires by means of the detection of characteristic volatile pyrolysis products, which are specific to the burning goods to be monitored, is shown. All components making up the device are located within the frame shown. In the present embodiment it comprises an exchangeable air inlet unit 1 with a filter unit 2 and a valve 3 represented as a needle valve, a pump 4 configured as a diaphragm pump, a heatable and on which a fluid sensor 7 is arranged. The measuring gas conduit 6 , the filter element of the filter unit has a pore size of 5 to 80 μm and allows moisture separation, the fluid sensor 7 is connected to a microcontroller system 8 . In the measuring gas line 6 , an air flow 5 is sucked in from the ambient air of the hazardous location to be monitored, for which early fire detection is important. The gas inlet unit 1 is screwed onto the input sleeve 9 which is located on the housing 12 of the ion ge...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for the early detection of fires based on the detection of volatile thermolytic products which are characteristic of the object to be monitored for fires. According to the method, ambient air of an area to be monitored for fires is taken in and ionized, the ionized gas stream being guided through an electromagnetic field, the resulting field strength of which in terms of its temporal or spatial dependency changes the trajectories of the ions in a parameter set in such a manner that positive or / and negative ions of the ionized gas are forced into predefined trajectories and detected. The invention further relates to a device for the early detection of fires using the detection of characteristic volatile thermolytic products which are specific to the objects to be monitored for fires. The device consists of an intake unit (1), an ion generation and ionic current measuring chamber (10) in which the gas stream (5) of the taken-in ambient air is ionized, electrodes (16, 17), having a connection (19) for generating and controlling a DC voltage (21), a ground connection and a connection (18) for generating and controlling an alternating field (20), two electrometer plates (22, 23) which detect characteristic ions, and a microcontroller system (8) which evaluates and stores the temporal dependency of the ionic currents and utilizes a significant change of the measured current at at least one DC voltage value to generate a fire alarm signal.

Description

technical field [0001] The invention relates to a method for the early detection of fires according to the preamble of claim 1 and to a device for carrying out the method. [0002] The invention relates to a method for detecting volatilized combustible-specific gases whose release in a thermal decomposition phase precedes a fire. [0003] With the help of finding the gas, early warning and alarm can be realized so that preventive measures can be taken. Furthermore, the present invention introduces a novel fire detector that utilizes detection of positive and negative ions of volatilized gas by separating the volatilized gas after passing through an electromagnetic field. As a result, very low concentrations of material-specific pyrolysis products can be detected at a very early stage of a fire. [0004] The invention is suitable for use in the detection of fires, where dark fires (very slow temperature rise of burning objects) and thermal decomposition processes can be consi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G08B17/11G08B17/117
CPCG08B17/11G08B17/117
Inventor K·伦凯特A·什乌曼
Owner MINIMAX LIMITED
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com