CN106931832B - There is the infrared suppressing structure in inner heat source equipment high temperature aperture on ground - Google Patents
There is the infrared suppressing structure in inner heat source equipment high temperature aperture on ground Download PDFInfo
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- CN106931832B CN106931832B CN201710231289.1A CN201710231289A CN106931832B CN 106931832 B CN106931832 B CN 106931832B CN 201710231289 A CN201710231289 A CN 201710231289A CN 106931832 B CN106931832 B CN 106931832B
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- high temperature
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- infrared suppressing
- distributing fin
- infrared
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H3/00—Camouflage, i.e. means or methods for concealment or disguise
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- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The invention discloses the infrared suppressing structures that there is inner heat source equipment high temperature aperture on a kind of ground, including infrared suppressing shell, its interior both lateral sides is symmetrically arranged with spaced multistage inner wall distributing fin, inner wall distributing fin is tilted to high temperature gas flow flow direction and length is successively decreased step by step respectively from bottom to top, and the small big divergent nozzle suitable for reading of lower mouth is formd in infrared suppressing shell.The ejecting port of perforation hole wall is equipped between every two-stage inner wall distributing fin, the high temperature gas flow entrance of infrared suppressing shell one end is adjacent with the lower inlet of divergent nozzle, and the mixed airflow outlet of the other end is adjacent with the upper end outlet of divergent nozzle.High-speed flow flows through generation negative pressure at inner wall distributing fin, the cool ambient air introduced through ejecting port, curtain jet is formed at inner wall distributing fin, to cooling high temperature aperture inner wall, hole wall is isolated with high temperature gas flow in hole simultaneously, it is effectively reduced the temperature of wall surface inside and outside high temperature aperture, it is suppressed that the infra-red radiation in high temperature aperture.
Description
Technical field
The present invention relates to a kind of infrared suppressing structures in high-temperature exhaust air smoke evacuation aperture, especially a kind of to utilize ambient, cool air
It carries out cooling down heat-insulated passive-type multistage injection air curtain infrared suppressing structure, belongs to infrared suppressing technical field.
Background technique
The continuous maturation of infrared technique, so that infrared acquisition is militarily widely used with tracking technique, especially
It is the rapid development of new infrared guided weapon, more and more serious threat is generated to the survival ability for having heat source military target.
There is the military land equipment of inner heat source, such as power station, shelter and military special type vehicle carry out infrared stealth design, finally all
It can sum up in the point that the high temperature aperture of thermal current end.Hole is influenced due to the inner wall in high-temperature gas heating aperture and by heat transfer
The temperature of mouth outside wall surface, causes the infra-red radiation in high temperature aperture to be much stronger than the infrared spoke of the other positions of target and locating background
It penetrates, and high temperature aperture is commonly exposed to equipment surface, thus is threatened in certain scouting and be easy to be scouted by enemy in angular range
Identification and strike.The land equipments such as power station, shelter and special vehicle play increasingly important role in IT-based warfare, and
The active equipment such as power station shelter is also equipped on many high pay-off targets, therefore, for the battlefield existence for improving various land equipments
Ability, it is necessary to reduce high temperature aperture infra-red radiation, study corresponding high temperature aperture infrared suppressing technology and methods has as realization
The infrared stealth of inner heat source land equipment and major issue urgently to be resolved.
Currently, aerial target is concentrated mainly on to the research of high temperature aperture infrared suppressing both at home and abroad, such as aircraft engines tail
Flame and naval target, such as naval vessel chimney.It is a kind of effective in order to reduce by the received infrared radiation signal of infrared detector
Technological approaches is the temperature that high-temperature component and exhaust are reduced using infrared suppressor draw ambient cold air.It is both domestic and external at present to grind
Study carefully and mainly use the multistage ring-like infrared suppressor of injection diffusion with jet pipe for aerospace plane and marine vessel, utilizes target
The negative pressure that high-speed flow flowing generates in the positive pressure generated outside high temperature aperture when high-speed mobile and aperture introduces the cold sky of environment
Gas is thermally shielded cooling, realizes the inhibition of high temperature aperture infrared signature.But land equipment relative to airflight target and
For sail target, majority be in static or non-rapid motion state, and high temperature aperture exhaust velocity also well below
Aircraft engine and the exhaust of naval vessel chimney, so that the existing multistage ring-like infrared suppressor of injection diffusion is difficult graft application to having
On the high temperature aperture of inner heat source land equipment.Currently, have the infrared suppressing technical research in inner heat source land equipment high temperature aperture compared with
It is few, the aluminium foil of low-launch-rate is such as attached in aperture inner wall, although its heat radiation can be substantially reduced, reduces infrared signature, by
In its reflectivity height, it is seen that light feature is obvious, and is unfavorable for visible light stealth；Using heat-insulated, active injection mixes cold and baffle
The infrared suppressing that modes carry out high temperature aperture such as block, also each exist cannot with environment temperature automatic adjusument, need it is additional dynamic
The disadvantages of power and bad infrared suppressing effect, cannot fully meet the infrared stealth that there is inner heat source equipment high temperature aperture on ground
It is required that.
Chinese invention patent CN103925044B discloses a kind of helicopter turbine engine exhaust system infrared suppressor
And its infrared suppressing method, infrared suppressor include binary bending radome fairing, binary bending lobe injection mixing tube, level-one circle row
Sand control residual air is imported exhaust inner cone by lobe nozzle, exhaust inner cone, sand control residual air conduit and hollow support plate, the infrared suppressor,
And directly mixed with the high-temperature exhaust air core flow after engine turbine, exhaust core temperature is greatly lowered；Utilize engine whirlpool
Exhaust momentum draw ambient cold air and thermal exhaust after wheel blend, and further decrease delivery temperature；In the rectification of infrared suppressor
Convection current is formed in cover, significantly reduces the temperature of infrared suppressor exposed surface, the reduction exhaust wake flame of maximum possible and red
The infra-red radiation on outer suppressor surface.But structure is complicated for infrared suppressor, manufacturing cost is high, it is difficult to the technology other than aircraft
It is promoted in field.
Summary of the invention
The object of the present invention is to provide the infrared suppressing knots that there is inner heat source equipment high temperature aperture on a kind of simple ground of structure
The infra-red radiation in high temperature aperture can be greatly reduced in structure, the structure, improve the infrared stealth ability of equipment.
The present invention is achieved by the following technical programs：
A kind of infrared suppressing structure having inner heat source equipment high temperature aperture, the infrared suppressing shell including both ends perforation, institute
The inner wall both lateral sides for stating infrared suppressing shell are symmetrically arranged with spaced multistage inner wall distributing fin, and the multistage inner wall is led
Stream fin one end is connected with inner wall respectively, and the multistage inner wall distributing fin other end is tilted to high temperature gas flow flow direction；In multistage
The length of wall distributing fin is successively decreased step by step respectively from bottom to top, and the small big flaring suitable for reading of lower mouth is formd in infrared suppressing shell
Jet pipe；The ejecting port of perforation inner wall, the high temperature gas flow of infrared suppressing shell one end are equipped between every two-stage inner wall distributing fin
Entrance is adjacent with the lower inlet of divergent nozzle, the upper end of the mixed airflow outlet and divergent nozzle of the infrared suppressing shell other end
It exports adjacent.
The purpose of the present invention can also be further realized by following technical measures.
Further, angle α=20 °~70 ° of inner wall distributing fin and infrared suppressing inner walls, inner wall water conservancy diversion at different levels
Fin is parallel to each other.
Further, extended corner β=40 °~50 ° of the divergent nozzle.
Further, the height of the ejecting port is successively decreased step by step from high temperature gas flow entrance to mixed airflow export direction.Institute
The height for stating ejecting port is less than the length of ejecting port.The spacing of the inner wall distributing fin is passed step by step to mixed airflow export direction
Subtract, and every grade of inner wall distributing fin height H is above or is equal to injection open height h.
Further, the lower end of the inner wall distributing fin extends outward shutter, and the shutter blocks ejecting port
Upside.
It is the configuration of the present invention is simple, easy to use.It is symmetrically arranged with and is alternatively arranged in the inner wall both lateral sides of infrared suppressing shell
And the multistage inner wall distributing fin being obliquely installed, the ejecting port of perforation inner wall is equipped between every two-stage inner wall distributing fin,
The length of multistage inner wall distributing fin is successively decreased step by step from bottom to top respectively, infrared suppressing shell inner wall form lower mouth it is small on
Mouthful big divergent nozzle, improves high temperature gas flow flow velocity in infrared suppressing structure, increases inner wall and leads negative pressure at wing.Every level-one
Inner wall distributing fin directly can introduce cold air from the external world by ejecting port, be formed about injection gas in inner wall distributing fin
Curtain forms multistage injection to completely cut off heating of the internal high temperature air-flow to inner wall and reaches the inhibition to inner wall infra-red radiation.This hair
The cold air amount of bright injection is big, and infrared suppressing effect is good.
The advantages and features of the present invention will be illustrated and explained by the non-limitative illustration of preferred embodiment below,
These embodiments only provide as an example referring to attached drawing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is air-flow flow schematic diagram of the invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, the present invention includes the infrared suppressing shell 1 of both ends perforation, 11 both lateral sides of inner wall are symmetrically arranged with
Spaced multistage inner wall distributing fin 2, described 2 one end of multistage inner wall distributing fin are connected with inner wall 11 respectively, the other end
It is tilted to high temperature gas flow flow direction.Angle α=20 °~70 ° of the inner wall 11 of inner wall distributing fin 2 and infrared suppressing shell 1,
Angle α=44 ° of the present embodiment, inner wall distributing fins 2 at different levels are parallel to each other.
The length of the multistage inner wall distributing fin 2 of 11 both lateral sides of inner wall of infrared suppressing shell 1 respectively from bottom to top by
Grade is successively decreased, and the small big divergent nozzle 3 suitable for reading of lower mouth is formd in infrared suppressing shell 1.Extended corner β=40 ° of divergent nozzle 3
~50 °, β=45 ° of the present embodiment.The ejecting port 4 of perforation inner wall 11, ejecting port are equipped between every two-stage inner wall distributing fin 2
4 height is less than the length of ejecting port 4, forms hole crack structure, and the height of ejecting port 4 is from high temperature gas flow entrance to gaseous mixture
Successively decrease step by step in outflux direction.Every grade of inner wall distributing fin height H is above or is equal to injection open height h.Infrared suppressing shell 1
The high temperature gas flow entrance 12 of lower end is adjacent with the lower inlet of divergent nozzle 3, the mixed airflow outlet of 1 upper end of infrared suppressing shell
13 is adjacent with the upper end outlet of divergent nozzle 3.The shape of infrared suppressing shell 1 is cuboid or cylindrical body, and shape rule is beautiful,
It is easily installed.
As shown in Fig. 2, the big hollow arrow direction in high temperature gas flow such as figure flows into the present invention from high temperature gas flow entrance 12,
Generation negative pressure at inner wall distributing fin 2 is flowed through, the small hollow arrow direction of inclination in the cool ambient air being introduced into such as figure is through injection
Mouthfuls 4 spurt into the present invention along inner wall distributing fin 2, form cooling air curtain in inner wall 11, make high temperature gas flow in the present invention with
Inner wall 11 separates, to reduce the wall surface temperature of inner wall 11.The cold air that injection enters is mixed with internal high temperature air-flow, through mixing
Air stream outlet 13 flows out the present invention.In order to preferably introduce cool ambient air, the lower end of inner wall distributing fin 2 extends outward hundred
Leaf window 21, the shutter 21 block the upside of ejecting port 4.
In addition to the implementation, the present invention can also have other embodiments, all to use equivalent substitution or equivalent transformation shape
At technical solution, be all fallen within the protection domain of application claims.
Claims (6)
1. the infrared suppressing structure that a kind of ground has inner heat source to equip high temperature aperture, the infrared suppressing shell including both ends perforation,
The inner wall both lateral sides of the infrared suppressing shell are symmetrically arranged with spaced multistage inner wall distributing fin, the multistage inner wall
Distributing fin one end is connected with inner wall respectively, and the multistage inner wall distributing fin other end is tilted to high temperature gas flow flow direction；It is special
Sign is：The length of multistage inner wall distributing fin is successively decreased step by step respectively from bottom to top, and lower mouth is formd in infrared suppressing shell
Small big divergent nozzle suitable for reading；The ejecting port of perforation inner wall, infrared suppressing shell are equipped between every two-stage inner wall distributing fin
The high temperature gas flow entrance of one end is adjacent with the lower inlet of divergent nozzle, the outlet of the mixed airflow of the infrared suppressing shell other end with
The upper end outlet of divergent nozzle is adjacent.
2. the infrared suppressing structure that there is inner heat source equipment high temperature aperture on ground as described in claim 1, it is characterised in that：It is described
Extended corner β=40 °~50 ° of divergent nozzle.
3. the infrared suppressing structure that there is inner heat source equipment high temperature aperture on ground as described in claim 1, it is characterised in that：It is described
The height of ejecting port is successively decreased step by step from high temperature gas flow entrance to mixed airflow export direction.
4. the infrared suppressing structure that there is inner heat source equipment high temperature aperture on ground as described in claim 1, it is characterised in that：It is described
The height of ejecting port is less than the length of ejecting port.
5. the infrared suppressing structure that there is inner heat source equipment high temperature aperture on ground as described in claim 1, it is characterised in that：It is described
The spacing of inner wall distributing fin is successively decreased step by step to mixed airflow export direction, and every grade of inner wall distributing fin height H be above or
Equal to injection open height h.
6. the infrared suppressing structure that there is inner heat source equipment high temperature aperture on ground as described in claim 1, it is characterised in that：It is described
The lower end of inner wall distributing fin extends outward shutter, and the shutter blocks the upside of ejecting port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710231289.1A CN106931832B (en) | 2017-04-11 | 2017-04-11 | There is the infrared suppressing structure in inner heat source equipment high temperature aperture on ground |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710231289.1A CN106931832B (en) | 2017-04-11 | 2017-04-11 | There is the infrared suppressing structure in inner heat source equipment high temperature aperture on ground |
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| Publication Number | Publication Date |
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| CN106931832A CN106931832A (en) | 2017-07-07 |
| CN106931832B true CN106931832B (en) | 2018-11-23 |
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| CN201710231289.1A Active CN106931832B (en) | 2017-04-11 | 2017-04-11 | There is the infrared suppressing structure in inner heat source equipment high temperature aperture on ground |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457236B (en) * | 2020-03-21 | 2022-05-20 | 复旦大学 | Full-thermal super surface presenting infrared thermal illusion and being invisible under visible light |
| CN114084325B (en) * | 2021-11-23 | 2024-02-27 | 江苏科技大学 | Infrared suppression device of power cabin for warship |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4312480A (en) * | 1979-11-26 | 1982-01-26 | Hughes Helicopters, Inc. | Radiation shielding and gas diffusion apparatus |
| CN101793428A (en) * | 2010-01-19 | 2010-08-04 | 王晋生 | Infrared camouflage air outlet |
| CN102486359A (en) * | 2009-03-25 | 2012-06-06 | 刘文杰 | Disguised exhaust port with cold chamber |
| CN203206153U (en) * | 2013-04-02 | 2013-09-18 | 肖哲鹏 | Panzer infrared inhibition apparatus |
| EP3015813A1 (en) * | 2014-10-30 | 2016-05-04 | NEXTER Systems | Thermal camouflage arrangement and vehicle including such a device |
| CN106438000A (en) * | 2016-12-20 | 2017-02-22 | 江苏豪赛科技股份有限公司 | Cooling device and method for generating unit of engine room |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206670457U (en) * | 2017-04-11 | 2017-11-24 | 江苏豪赛科技股份有限公司 | There is the infrared suppressing structure in endogenous pyrogen equipment high temperature aperture on ground |
-
2017
- 2017-04-11 CN CN201710231289.1A patent/CN106931832B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4312480A (en) * | 1979-11-26 | 1982-01-26 | Hughes Helicopters, Inc. | Radiation shielding and gas diffusion apparatus |
| CN102486359A (en) * | 2009-03-25 | 2012-06-06 | 刘文杰 | Disguised exhaust port with cold chamber |
| CN101793428A (en) * | 2010-01-19 | 2010-08-04 | 王晋生 | Infrared camouflage air outlet |
| CN203206153U (en) * | 2013-04-02 | 2013-09-18 | 肖哲鹏 | Panzer infrared inhibition apparatus |
| EP3015813A1 (en) * | 2014-10-30 | 2016-05-04 | NEXTER Systems | Thermal camouflage arrangement and vehicle including such a device |
| CN106438000A (en) * | 2016-12-20 | 2017-02-22 | 江苏豪赛科技股份有限公司 | Cooling device and method for generating unit of engine room |
Non-Patent Citations (1)
| Title |
|---|
| 车辆装备的高温孔口红外隐身研究;唐晓杰等;《移动电源与车辆》;20150320(第1期);第11-14页 * |
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Inventor after: Wu Denglin Inventor before: Wu Denglin Inventor before: Shen Weidong Inventor before: Song Sihong |