CN103366168A - Vapor type potential fingerprint showing device - Google Patents
Vapor type potential fingerprint showing device Download PDFInfo
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- CN103366168A CN103366168A CN2013102455581A CN201310245558A CN103366168A CN 103366168 A CN103366168 A CN 103366168A CN 2013102455581 A CN2013102455581 A CN 2013102455581A CN 201310245558 A CN201310245558 A CN 201310245558A CN 103366168 A CN103366168 A CN 103366168A
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- heating
- vapor
- snorkel
- air
- outlet
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Abstract
The invention discloses a vapor type potential fingerprint showing device, which is formed by connecting a vapor generator, an air pressurizing heating device and a ventilation tube, wherein one end of the ventilation tube is provided with an air outlet, and the other end of the ventilation tube is provided with an air inlet; in the vapor generator, a heating disk is arranged below a container; a vapor outlet is formed above the container; the vapor outlet is communicated with the side face of the air outlet end of the ventilation tube through an air guide tube; in the air pressurizing heating device, a heating cover is arranged at the air inlet of the ventilation tube; a heating wire is arranged in the heating cover; and a draught fan is arranged at the inlet of the heating cover. The vapor type potential fingerprint showing device is used for showing potential fingerprints left on smooth surfaces which are transparent or are weak in moisture absorption capability.
Description
Technical field
The present invention relates to the finger mark visualization means used in the public security criminal investigation, relate in particular to the potential finger mark visualization means of a kind of steam-type.
Background technology
Reconnoitring in the evidence obtaining process of public security criminal case, need to carry out finger mark to suspicion sample surface and manifest processing, to seek suspect's sweat liquid, thereby reach the purpose of detection criminal case, at present, extraction for potential impression of the hand on the smooth object plane that is retained in a little less than transparent or the wettability power, usually adopt " method of breathing out " namely to breathe out facing to the position that the checking matter surface is suspected to have impression of the hand with mouth, because this method is only applicable to temperature difference lower season, be unfavorable for large-area search discovery finger mark, and also Chang Yin breathe out what, the length of the rear residence time of breathing out affects finger mark and manifests, even can destroy tested finger mark, also can be caused DNA to pollute by saliva and the spittle, thereby affect taking full advantage of of subsequent survey and material evidence, lose the value of further check, therefore, be sought after a kind of temperature limiting that neither is subjected to and be applicable to again to be retained in potential finger mark visualization means on transparent or the smooth object plane that wettability power is weak.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of steam-type potential finger mark visualization means.
The potential finger mark visualization means of a kind of steam-type is characterized in that it is formed by connecting by steam generator, air pressurized heating arrangement and snorkel; One end of described snorkel is the gas outlet, and the other end is air intake opening; Described steam generator is provided with heating plate below a container, the top of container is provided with steam (vapor) outlet, and steam (vapor) outlet is communicated with by the side of wireway with snorkel gas outlet end; Described air pressurized heating arrangement is that the air intake opening at snorkel is provided with heating mantles, is provided with heater strip in the heating mantles, and the heating mantles import is provided with induced draft fan.
During use, connect the heating plate power supply, interior water to the boiling point of container is transformed into water vapour and enters in the snorkel, connect again heater strip and fan power, air-flow entered the snorkel inner chamber after induced draft fan drove heating, be sprayed onto on the body surface that to search for, manifest from the snorkel gas outlet with the water vapour mixing, make between the concavo-convex streakline and form different contrasts with ambient surface, thereby find impression of the hand.
Advantage of the present invention is: the present invention is simple in structure, easy to use, be not subjected to the impact of risers, the isoplanar diverse location angle in dip plane, can find finger mark and relevant vestige by wide area search, avoid in the process of extracting finger mark, vestige being polluted or damaging, owing to selecting limpid and free of contamination water as manifesting liquid, environmentally safe, also be not subjected to the impact in season, the body surface after manifesting can return to virgin state, does not affect other relevant check and processing.
Description of drawings
Fig. 1 is structural representation of the present invention:
Among the figure: 1, heating plate; 2, container; 3, wireway; 4, snorkel; 5, heating mantles; 6, heater strip; 7, induced draft fan; 8, the gas outlet.
Embodiment
The present invention is further described below in conjunction with accompanying drawing:
As shown in Figure 1, the potential finger mark visualization means of a kind of steam-type, it is formed by connecting by steam generator, air pressurized heating arrangement and snorkel 4; One end of described snorkel 4 is gas outlet 8, and the other end is air intake opening; Described steam generator is provided with heating plate 1 below a container 2, the top of container 2 is provided with steam (vapor) outlet, and steam (vapor) outlet is communicated with the side of snorkel gas outlet 8 one ends by wireway 3; Described air pressurized heating arrangement is that the air intake opening at snorkel 4 is provided with heating mantles 5, is provided with heater strip 6 in the heating mantles 5, and heating mantles 5 imports are provided with induced draft fan 7.
During use, connect heating plate 1 power supply, container 2 interior water to boiling points are transformed into water vapour and enter in the snorkel 4, connect again heater strip 6 and induced draft fan 7 power supplys, air-flow entered snorkel 4 inner chambers after induced draft fan 7 drove heating, be sprayed onto on the body surface that to search for, manifest from snorkel gas outlet 8 with the water vapour mixing, make between the concavo-convex streakline and form different contrasts with ambient surface, thereby find impression of the hand.
Claims (1)
1. the potential finger mark visualization means of steam-type is characterized in that, it is formed by connecting by steam generator, air pressurized heating arrangement and snorkel; One end of described snorkel is the gas outlet, and the other end is air intake opening; Described steam generator is provided with heating plate below a container, the top of container is provided with steam (vapor) outlet, and steam (vapor) outlet is communicated with by the side of wireway with snorkel gas outlet end; Described air pressurized heating arrangement is that the air intake opening at snorkel is provided with heating mantles, is provided with heater strip in the heating mantles, and the heating mantles import is provided with induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102455581A CN103366168A (en) | 2013-06-09 | 2013-06-09 | Vapor type potential fingerprint showing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102455581A CN103366168A (en) | 2013-06-09 | 2013-06-09 | Vapor type potential fingerprint showing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103366168A true CN103366168A (en) | 2013-10-23 |
Family
ID=49367472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102455581A Pending CN103366168A (en) | 2013-06-09 | 2013-06-09 | Vapor type potential fingerprint showing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103366168A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467101Y (en) * | 2001-01-08 | 2001-12-26 | 张树来 | Electric heating skin disease therapeutical instrument |
| CN1491614A (en) * | 2002-07-18 | 2004-04-28 | 北京安泰信达科技有限公司 | Finger print fumigation display method and its equipment |
| US20050252444A1 (en) * | 2002-10-21 | 2005-11-17 | Nichols Walter A | Method and apparatus for fingerprint detection |
| CN201105719Y (en) * | 2007-07-17 | 2008-08-27 | 刘东宁 | Multifunctional steam carwasher |
| CN201422880Y (en) * | 2009-05-08 | 2010-03-17 | 耿东 | Multifunction vapor investigation instrument |
| CN201508562U (en) * | 2009-06-05 | 2010-06-16 | 南京北方科技有限公司 | 502-glue handprint/fingerprint fumigating display cabinet capable of accurately controlling temperature and humidity |
-
2013
- 2013-06-09 CN CN2013102455581A patent/CN103366168A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467101Y (en) * | 2001-01-08 | 2001-12-26 | 张树来 | Electric heating skin disease therapeutical instrument |
| CN1491614A (en) * | 2002-07-18 | 2004-04-28 | 北京安泰信达科技有限公司 | Finger print fumigation display method and its equipment |
| US20050252444A1 (en) * | 2002-10-21 | 2005-11-17 | Nichols Walter A | Method and apparatus for fingerprint detection |
| CN201105719Y (en) * | 2007-07-17 | 2008-08-27 | 刘东宁 | Multifunctional steam carwasher |
| CN201422880Y (en) * | 2009-05-08 | 2010-03-17 | 耿东 | Multifunction vapor investigation instrument |
| CN201508562U (en) * | 2009-06-05 | 2010-06-16 | 南京北方科技有限公司 | 502-glue handprint/fingerprint fumigating display cabinet capable of accurately controlling temperature and humidity |
Non-Patent Citations (1)
| Title |
|---|
| 豆亚中 等: "新法显现提取不锈钢水龙头手柄上的汗潜指印", 《警察技术》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131023 |