CN102883585A - Multi-step-shaped cooling-fin-type closed cooling device - Google Patents
Multi-step-shaped cooling-fin-type closed cooling device Download PDFInfo
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- CN102883585A CN102883585A CN2012102886925A CN201210288692A CN102883585A CN 102883585 A CN102883585 A CN 102883585A CN 2012102886925 A CN2012102886925 A CN 2012102886925A CN 201210288692 A CN201210288692 A CN 201210288692A CN 102883585 A CN102883585 A CN 102883585A
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Abstract
The invention provides a multi-step-shaped cooling-fin-type closed cooling device. Multistage step-shaped cooling fins are arranged on the two opposite surfaces of a cooling air channel inner cavity; the height values of the multi-step-shaped cooling fins are increased in a stepped way along an airflow trend; guiding grooves are formed in the outer wall of a cooling air channel; transmitter/receiver (T/R) components are tightly attached with the guiding grooves; the two end faces of the cooling air channel are provided with an air inlet and an air outlet respectively; the cooling air channel is arranged in a shell closed cavity; and holes which are matched with the air inlet and the air outlet are respectively formed in the two end faces of the antenna shell closed cavity for arranging a blower fan and an exhaust fan respectively. By the device, the problem of unbalanced temperature of the T/R components after the T/R components are densely arranged is solved, the capability of resisting a severe environment of an active phased array antenna is improved, and the device has the advantages of simple structure, small size and light weight, and is easy to process.
Description
Technical field
The present invention relates to a kind of heat abstractor.
Background technology
The very high T/R assembly of a large amount of closenesses is installed in active phase array antenna, and the microwave power device in the T/R assembly mostly is the miniature microwave integrated circuit.Because efficient is low, T/R assembly work meeting produces a large amount of thermal lossess, this will make the temperature of T/R assembly self sharply rise, too high temperature can affect service behaviour and the useful life of assembly, may cause damage to assembly when serious, therefore, thermal design is a very important problem in active phase array antenna.The radiating mode that is applied at present on the active phase array antenna mainly contains liquid-cooling heat radiation and wind-cooling heat dissipating.Liquid-cooling heat radiation and wind-cooling heat dissipating can reach to the large T/R assembly of density of heat flow rate the effect of temperature uniforming heat radiation, realize consistency (the Multi-mode Solid-state Phased Array Radar face Thermal Design of Heat [Master's thesis] of temperature, Xian Electronics Science and Technology University, 2008) (the thermal design of active array array antenna system, " electronic circuit ", 2009).But liquid-cooling heat radiation needs the complete liquid cooling system of a cover, and for the equipment of lightness, high maneuverability, because weight and volume has stricter requirement, so liquid-cooling heat radiation is not too suitable; What wind-cooling heat dissipating mostly adopted is open air cooling system, thereby the ability of anti-adverse environment, can not realize dustproof, the waterproof of active phase array antenna, anti-salt fog.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of multistage scalariform fin type sealing heat abstractor, solve the unbalanced problem of temperature after the T/R assembly dense arrangement that density of heat flow rate is large on the monostatic radar antenna, thus the consistency on the T/R assembly property during work of realization; Realize the secondary heat radiation by the sealing heat abstractor simultaneously, improve the ability of active phase array antenna anti-adverse environment, the present invention is simple in structure, and volume is little, and is lightweight, is easy to processing.
The technical solution adopted for the present invention to solve the technical problems is: comprise antenna casing closed cavity, heat dissipation wind channel, air blast blower fan, exhausting blower fan, air ducting and hold down gag.
Described heat dissipation wind channel is a hollow cavity, inner chamber two is arranged multistage stepped fin on the relative surface, the height value of multistage scalariform fin moves towards stepped increase along air-flow, the heat dissipation wind channel outer wall corresponding at multistage scalariform fin is processed with gathering sill, the T/R assembly is close in the gathering sill, and compresses with hold down gag; Two end faces of heat dissipation wind channel are respectively air inlet and air outlet, and the end that wherein stepped fin ladder is minimum is air inlet, and the end that ladder is the highest is air outlet; Heat dissipation wind channel is installed in the shell seal cavity, and two end faces of antenna casing closed cavity have the hole that is complementary with air inlet and air outlet, and air blast blower fan and exhausting blower fan are installed respectively.
Described heat dissipation wind channel is a kind of square cavity of hollow, and the ratio of the length of cavity and cross section maximal side is greater than 5.
It is 1.6g/cm that described heat dissipation wind channel is selected density
3～9.0g/cm
3Metal material, comprise rust-preventing aluminum alloy and magnesium alloy.
The binding face of described T/R assembly and heat dissipation wind channel is pasted heat-conducting pad or the thermal grease conduction of 0.1mm～1.2mm.
Described air ducting is made with aluminium alloy or expoxy glass laminated sheet.
Described air inlet is equipped with air ducting, an end of air ducting and air inlet coupling, and the other end and air blast blower fan coupling, air blast blower fan and air ducting binding face are stained with sealing gasket; The binding face of described exhausting blower fan and air outlet is stained with sealing gasket.
The invention has the beneficial effects as follows: when the present invention worked, the inner chamber of heat dissipation wind channel and outside air carried out the heat exchange in heat abstractor, and all the other parts in heat dissipation wind channel exocoel and the heat abstractor all are sealed in the shell seal cavity.The heat that the T/R assembly sheds is transmitted on the stepped fin by heat-conducting pad or thermal grease conduction and heat dissipation wind channel wall, by the exhausting blower fan of air outlet heat is taken away again.When air enters heat dissipation wind channel by the air blast blower fan from air inlet, the air inlet air themperature is minimum, air is along in the stepped fin Clearance Flow process, along with the ladder of stepped fin progressively uprises, space in the heat dissipation wind channel reduces gradually, air themperature builds up rising, air mass flow increases gradually in the unit are, air velocity increases gradually, the heat that unit interval is taken away increases gradually, so so that whole heat dissipation wind channel temperature is relatively more balanced, thereby temperature is relatively more balanced when making the work of T/R assembly.
Description of drawings
Fig. 1 is multistage scalariform fin type sealing heat abstractor three-dimensional structure diagram;
Fig. 2 is the heat dissipation wind channel three-dimensional structure diagram;
Fig. 3 is heat dissipation wind channel structure figure;
Fig. 4 is heat dissipation wind channel end face structure figure;
Fig. 5 is the heat dissipation wind channel sectional view;
Fig. 6 is the T/R assembly assumption diagram that posts heat-conducting pad;
Fig. 7 is the air ducting structure chart.
Embodiment
The present invention is applied to the active phase array antenna technical field.The present invention proposes a kind of multistage stepped fin type sealing heat abstractor, this heat abstractor is applied to that volume, weight, anti-adverse environment ability are had the active phase array antenna of being strict with, can realize the temperature uniforming heat radiation requirement after the T/R assembly dense arrangement in the antenna, can realize the secondary heat radiation by the sealing heat abstractor simultaneously, improve the ability of antenna anti-adverse environment.
The version of multistage scalariform fin type sealing heat abstractor as shown in Figure 1, it is comprised of antenna casing closed cavity (sequence number 1), heat dissipation wind channel (sequence number 2), air blast blower fan (sequence number 3), exhausting blower fan (sequence number 4), air ducting (sequence number 5), T/R assembly (sequence number 6), hold down gag (sequence number 7), GB securing member (sequence number 13), sealing gasket (sequence number 14).
The version of heat dissipation wind channel as shown in Figure 2, it is that the ratio of a kind of hollow and length dimension and cross section maximal side size is greater than 5 square structure, inner chamber two relative surface uniforms are arranged multistage stepped fin (sequence number 8) (multistage scalariform fin is a kind of fin that moves towards the discontinuous increase of its height value along air-flow), and it is 1.6g/cm that this structure is selected density
3～9.0g/cm
3Metal material, such as rust-preventing aluminum alloy, magnesium alloy etc.At heat dissipation wind channel outer wall processing gathering sill (sequence number 9) corresponding to stepped fin (sequence number 8), be used for the accurate location and installation of T/R assembly (sequence number 6); Two end faces of heat dissipation wind channel are respectively air inlet (sequence number 10) and air outlet (sequence number 11), and the end that wherein stepped fin ladder is minimum is air inlet, and the end that ladder is the highest is air outlet, and the sectional view of heat dissipation wind channel as shown in Figure 5.
During assembling, T/R assembly (sequence number 6) is close in the gathering sill (sequence number 9) of heat dissipation wind channel both sides, heat-conducting pad or thermal grease conduction (sequence number 12) that the binding face of T/R assembly (sequence number 6) and heat dissipation wind channel (sequence number 2) is pasted 0.1mm～1.2mm increase heat transmission function to eliminate the air gap, again with T/R assembly (sequence number 6) with hold down gag (sequence number 7) (hold down gag be a kind of with metal material make can be with the device of T/R assembly close-coupled on heat dissipation wind channel) compression and GB securing member (sequence number 13) be fastening.The heat dissipation wind channel that T/R assembly (sequence number 6) will be housed is installed in the shell seal cavity (sequence number 1), and two end faces of shell seal cavity (sequence number 1) have the hole that two end face mouths with heat dissipation wind channel (sequence number 2) are complementary.The air inlet of heat dissipation wind channel is equipped with air ducting (sequence number 5), port shape of air ducting and heat dissipation wind channel bore coupling, another port and blower fan bore coupling, be used for reducing the air quantity loss of air inlet, air ducting available metal material is made, such as aluminium alloy, also available nonmetallic materials manufacturing is such as the expoxy glass laminated sheet.Air inlet (sequence number 10) at heat dissipation wind channel is installed an air blast blower fan, and air blast blower fan and air ducting binding face are stained with sealing gasket (sequence number 14); Air outlet (sequence number 11) is installed an exhausting blower fan, and the binding face of exhausting blower fan and heat dissipation wind channel is stained with sealing gasket (sequence number 14).
During work, inner chamber and the outside air of heat dissipation wind channel in heat abstractor (sequence number 2) carry out the heat exchange, and all the other parts in heat dissipation wind channel (sequence number 2) exocoel and the heat abstractor all are sealed in the shell seal cavity (sequence number 1).The heat that T/R assembly (sequence number 6) sheds is transmitted on the stepped fin (sequence number 8) by heat-conducting pad or thermal grease conduction (sequence number 12) and heat dissipation wind channel (sequence number 2) wall, by the exhausting blower fan of air outlet heat is taken away again.When air enters heat dissipation wind channel by the air blast blower fan from air inlet, the air inlet air themperature is minimum, air is along in the stepped fin Clearance Flow process, along with the ladder of stepped fin progressively uprises, space in the heat dissipation wind channel reduces gradually, air themperature builds up rising, air mass flow increases gradually in the unit are, air velocity increases gradually, the heat that unit interval is taken away increases gradually, so so that whole heat dissipation wind channel temperature is relatively more balanced, thereby temperature is relatively more balanced when making the work of T/R assembly.
The present invention is further described below in conjunction with drawings and Examples.
Multistage scalariform fin type sealing heat abstractor is applied to the heat radiation after density of heat flow rate is large in the active antenna the T/R assembly dense arrangement, realizes the secondary heat radiation by the sealing heat abstractor simultaneously, improves the ability of antenna anti-adverse environment, and specific embodiments is as follows:
1) according to the length L of T/R assembly in the active phase array antenna (sequence number 6)
1, width dimensions L
2, quantity N and heat dissipation wind channel both ends of the surface flange thickness size d
0, by L
2=A, L
1=B, L=(L
2+ δ) N/2+2d
0Determine heat dissipation wind channel size A shown in Figure 3, size B and overall length dimension L.
2) according to the heating power Φ of T/R assembly (sequence number 6), by formula Q=Φ/(C
Pρ Δ t) determines air quantity and the blower fan type of air blast blower fan and exhausting blower fan, C
PBe the specific heat of air, ρ is atmospheric density, and Δ t is the temperature difference that the air channel is imported and exported.Selecting and can welding aluminium is the heat dissipation wind channel material.According to design experiences, the value of heat dissipation wind channel dimension D is at L
1-20mm～L
1-10mm, the value of heat dissipation wind channel size C is at 45mm～65mm, and fin thickness d value is at 0.5mm～2.5mm, and the spacing y value of fin is at 2mm～6mm, and the fin height value is at 5mm～25mm.By Computer Simulation, optimization and test, determine the thickness d of heat dissipation wind channel size C shown in Figure 4 and dimension D and fin, the spacing y of fin; Determine number M, step number K and the step size of fin in the heat dissipation wind channel shown in Figure 5.
3) the size A of air ducting (sequence number 5)
1=C and A
2=D, size B
1, B
2Equate with air blast blower fan profile size dimension; Select nonmetallic materials to be made into air ducting (sequence number 5).
4) T/R assembly (sequence number 6) is fitted tightly in heat dissipation wind channel (sequence number 2) both sides along heat dissipation wind channel (sequence number 2) gathering sill, compress with hold down gag (sequence number 7), GB securing member (sequence number 13) is fastenedly connected.
The heat dissipation wind channel that 5) T/R assembly (sequence number 6) will be housed is installed in the antenna casing closed cavity (sequence number 1), all the other all are sealed in the antenna casing closed cavity (sequence number 1) except two end faces of heat dissipation wind channel (sequence number 2), the heat dissipation wind channel air outlet is installed sealing gasket (sequence number 14), exhausting blower fan (sequence number 4), air intake vent is installed first air ducting (sequence number 5), sealing gasket (sequence number 14), and air blast blower fan (sequence number 3) is installed again.
Instantiation 1
1) T/R length component size L
1=80mm, width dimensions L
2=37mm, therefore quantity N=34 obtains duct dimension A=37mm, B=80mm, δ=4mm, flange thickness size d
0=6mm, L=(L
2+ δ) N/2+2d
0=709mm.
2) T/R assembly heating power Φ=14W, N=34, C
P=0.24kcal/kg ℃, ρ=1.077kg/m
3, Δ t=20 ℃, substitution formula Q=Φ N/(C
Pρ Δ t)=1.3m
3Therefore/min selects the air quantity 〉=Q of blower fan, preferred dimension 120X120X38mm, air quantity maximum 5.7m
3The axial flow blower of/min.Heat dissipation wind channel is selected the LF21 rustproof aluminum alloy, by Computer Simulation, optimization and test, determines the thickness d=1mm of heat dissipation wind channel size C=50mm and dimension D=65mm and fin, the spacing y=2.5mm of fin; Shown in determining in the heat dissipation wind channel number of fin be M=18, step number is K=5, step size a
1～a
5, b
1～b
5, a
1=210mm, a
2=135mm, a
3=100mm, a
4=110mm, a
5=70mm, b
1=23mm, b
2=19mm, b
3=15mm, b
4=11mm, b
5=8mm.
3) air ducting is selected the mold cured moulding of expoxy glass laminated cloth and epoxy glue, size A
1=C=50mm, A
2=D=65mm, B
1=B
2=120mm
4) 34 T/R assemblies are fitted tightly in the heat dissipation wind channel both sides along the heat dissipation wind channel gathering sill, be connected connection with hold down gag with the GB securing member.
The heat dissipation wind channel that 5) the T/R assembly will be housed is installed in the antenna casing closed cavity with the GB securing member, the antenna casing closed cavity is selected carbon fibre composite, be of a size of 720X100X200mm, all the other all are sealed in the antenna casing closed cavity except two end faces of heat dissipation wind channel.The heat dissipation wind channel air outlet is installed sealing gasket, exhausting blower fan, and air intake vent is installed first air ducting, sealing gasket, and the air blast blower fan is installed again, uses respectively GB securing member tight joint.
Instantiation 2
1) T/R length component size L
1=60mm, width dimensions L
2=25mm, therefore quantity N=20 obtains duct dimension A=25mm, B=60mm, δ=4mm, flange thickness size d
0=6mm, L=(L
2+ δ) N/2+2d
0=302mm.
2) T/R assembly heating power Φ=10W, N=20, C
P=0.24kcal/kg ℃, ρ=1.077kg/m
3, Δ=20 ℃, substitution formula Q=Φ N/(C
Pρ Δ t)=0.55m
3Therefore/min selects the air quantity 〉=Q of blower fan, preferred dimension 60X60X32mm, air quantity maximum 1.2m
3The axial flow blower of/min.Heat dissipation wind channel is selected copper alloy H62, by Computer Simulation, optimization and test, determines the thickness d=1.2mm of heat dissipation wind channel size C=45mm and dimension D=45mm and fin, the spacing y=3mm of fin; The number 10 of fin in the heat dissipation wind channel shown in determining, step number 4, step size a
1～a
4, b
1～b
4, a
1=50mm, a
2=100mm, a
3=90mm, a
4=50mm, b
1=5mm, b
2=12mm, b
3=18mm, b
4=20mm.
3) air ducting is selected the mold cured moulding of expoxy glass laminated cloth and epoxy glue, size A
1=C=45mm, A
2=D=45mm, B
1=B
2=60mm
4) 20 T/R assemblies are fitted tightly in the heat dissipation wind channel both sides along the heat dissipation wind channel gathering sill, be connected connection with hold down gag with the GB securing member.
The heat dissipation wind channel that 5) the T/R assembly will be housed is installed in the antenna casing closed cavity with the GB securing member, the antenna casing closed cavity is selected carbon fibre composite, be of a size of 325X80X160mm, all the other all are sealed in the antenna casing closed cavity except two end faces of heat dissipation wind channel.The heat dissipation wind channel air outlet is installed sealing gasket, exhausting blower fan, and air intake vent is installed first air ducting, sealing gasket, and the air blast blower fan is installed again, uses respectively GB securing member tight joint.
Claims (6)
1. a multistage scalariform fin type seals heat abstractor, comprise antenna casing closed cavity, heat dissipation wind channel, air blast blower fan, exhausting blower fan and hold down gag, it is characterized in that: described heat dissipation wind channel is a hollow cavity, inner chamber two is arranged multistage stepped fin on the relative surface, the height value of multistage scalariform fin moves towards stepped increase along air-flow, the heat dissipation wind channel outer wall corresponding at multistage scalariform fin is processed with gathering sill, the T/R assembly is close in the gathering sill, and compresses with hold down gag; Two end faces of heat dissipation wind channel are respectively air inlet and air outlet, and the end that wherein stepped fin ladder is minimum is air inlet, and the end that ladder is the highest is air outlet; Heat dissipation wind channel is installed in the shell seal cavity, and two end faces of antenna casing closed cavity have the hole that is complementary with air inlet and air outlet, and air blast blower fan and exhausting blower fan are installed respectively.
2. according to utilizing multistage scalariform fin type sealing heat abstractor claimed in claim 1, it is characterized in that: described heat dissipation wind channel is a kind of square cavity of hollow, and the ratio of the length of cavity and cross section maximal side is greater than 5.
3. according to utilizing multistage scalariform fin type sealing heat abstractor claimed in claim 1, it is characterized in that: it is 1.6g/cm that described heat dissipation wind channel is selected density
3～9.0g/cm
3Metal material, comprise rust-preventing aluminum alloy and magnesium alloy.
4. according to utilizing multistage scalariform fin type sealing heat abstractor claimed in claim 1, it is characterized in that: the binding face of described T/R assembly and heat dissipation wind channel is pasted heat-conducting pad or the thermal grease conduction of 0.1mm～1.2mm.
5. according to utilizing multistage scalariform fin type sealing heat abstractor claimed in claim 1, it is characterized in that: described air ducting is made with aluminium alloy or expoxy glass laminated sheet.
6. according to utilizing multistage scalariform fin type sealing heat abstractor claimed in claim 1, it is characterized in that: described air inlet is equipped with air ducting, one end of air ducting and air inlet coupling, the other end and air blast blower fan coupling, air blast blower fan and air ducting binding face are stained with sealing gasket; The binding face of described exhausting blower fan and air outlet is stained with sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102886925A CN102883585A (en) | 2012-08-14 | 2012-08-14 | Multi-step-shaped cooling-fin-type closed cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102886925A CN102883585A (en) | 2012-08-14 | 2012-08-14 | Multi-step-shaped cooling-fin-type closed cooling device |
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| Publication Number | Publication Date |
|---|---|
| CN102883585A true CN102883585A (en) | 2013-01-16 |
Family
ID=47484657
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|---|---|---|---|
| CN2012102886925A Pending CN102883585A (en) | 2012-08-14 | 2012-08-14 | Multi-step-shaped cooling-fin-type closed cooling device |
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Cited By (7)
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|---|---|---|---|---|
| CN103747653A (en) * | 2013-12-19 | 2014-04-23 | 西安电子工程研究所 | Heat-radiating structure of T/R component and design method for heat pipe in structure |
| CN105208830A (en) * | 2015-09-23 | 2015-12-30 | 西安电子工程研究所 | Multitube fixed-point jet air cooling radiator of TR assembly of radar |
| GB2514612B (en) * | 2013-05-31 | 2016-10-12 | Bae Systems Plc | Improvements in and relating to antenna systems |
| CN106132163A (en) * | 2016-07-14 | 2016-11-16 | 陕西黄河集团有限公司 | A kind of T-shaped air duct heat dissipating device using trapezoidal radiating fin |
| CN106304777A (en) * | 2016-08-12 | 2017-01-04 | 中国科学院电子学研究所 | Spaceborne phased array antenna ground is vertically tested with heat abstractor and heat dissipating method |
| CN106783050A (en) * | 2016-12-27 | 2017-05-31 | 全球能源互联网研究院 | A kind of fin and its method for designing and device and transformer |
| CN107923607A (en) * | 2015-08-04 | 2018-04-17 | 飞利浦照明控股有限公司 | Radiator, lighting apparatus and the method for manufacturing radiator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2514612B (en) * | 2013-05-31 | 2016-10-12 | Bae Systems Plc | Improvements in and relating to antenna systems |
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| CN107923607A (en) * | 2015-08-04 | 2018-04-17 | 飞利浦照明控股有限公司 | Radiator, lighting apparatus and the method for manufacturing radiator |
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| CN106132163A (en) * | 2016-07-14 | 2016-11-16 | 陕西黄河集团有限公司 | A kind of T-shaped air duct heat dissipating device using trapezoidal radiating fin |
| CN106132163B (en) * | 2016-07-14 | 2018-06-29 | 陕西黄河集团有限公司 | A kind of T shape air duct heat dissipating devices using trapezoidal radiating fin |
| CN106304777A (en) * | 2016-08-12 | 2017-01-04 | 中国科学院电子学研究所 | Spaceborne phased array antenna ground is vertically tested with heat abstractor and heat dissipating method |
| CN106783050A (en) * | 2016-12-27 | 2017-05-31 | 全球能源互联网研究院 | A kind of fin and its method for designing and device and transformer |
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Application publication date: 20130116 |