CN112944950B - Annular radiator - Google Patents
Annular radiator Download PDFInfo
- Publication number
- CN112944950B CN112944950B CN202110265655.1A CN202110265655A CN112944950B CN 112944950 B CN112944950 B CN 112944950B CN 202110265655 A CN202110265655 A CN 202110265655A CN 112944950 B CN112944950 B CN 112944950B
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- China
- Prior art keywords
- annular
- heat dissipation
- core body
- dissipation core
- flow channel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses an annular radiator, which is a cross-flow type aluminum finned annular radiator and is used for primary heat exchange of a fixed wing aircraft air inlet and an environmental control system. The heat dissipation heat core body is an annular cylinder, a hollow cavity body surrounded by the inner wall of the cylinder of the inner wall of the heat dissipation core body is used as a flow channel for low-temperature gas along the axial direction, a high-temperature fluid (liquid or gas) flow channel is arranged in the circumferential direction in the cylinder of the heat dissipation core body, fins with certain intervals are arranged in the flow channel, when low-temperature fluid flows along the axial direction and the high-temperature fluid flows along the circumferential direction, the flow directions of the high-temperature fluid and the low-temperature fluid are crossed, and the high-temperature fluid transfers heat to the low-temperature fluid through the fins and the inner wall of the cylinder, so that the aim of cooling the high-temperature fluid by low-temperature air is fulfilled.
Description
Technical Field
The invention relates to a cross-flow type aluminum finned annular radiator, in particular to an annular radiator which is arranged at the rear end of an aircraft air inlet and used for cooling hot fluid in an annular control system by using stamping cold air.
Background
The ring that present aircraft environmental control system used looses mainly is steel annular radiator, mainly utilizes ram air to carry out the cold to the high-temperature air that draws from the engine, and the refrigerated high-temperature air gets into the passenger cabin through next grade of heat exchanger cooling finally, provides suitable air circumstance for the passenger cabin. With the increase of the number and power of the on-board electronic equipment, in order to ensure the proper temperature in the equipment cabin, a large amount of heat correspondingly generated in the cabin needs to be taken away by adopting ram air, and the conventional steel annular radiator cannot meet the requirements of high efficiency, light weight and small installation space.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: to the problem that exists among the prior art, provide a cross-flow formula aluminium system fin annular radiator, make full use of air inlet duct space possesses less weight to the realization utilizes the ram cold air to cool off the hot-fluid that especially electronic equipment cabin produced on the machine, satisfies the heat transfer demand.
The technical scheme of the invention is as follows:
an annular radiator is made of aluminum alloy and comprises,
an inner flow passage arranged axially along the annular heat sink;
the outer runner is located on the outer side of the inner runner and arranged along the circumferential direction of the annular radiator, and the outer runner and the inner runner form a cross-flow type heat exchange structure.
Further, the annular radiator also comprises a radiating core inner wall, the radiating core inner wall serves as a primary heat exchange surface and forms a circumferential closed area, and an inner flow channel is formed in the inner space of the circumferential closed area.
Further, a heat dissipation core body coaxial with the inner wall of the heat dissipation core body is arranged on the outer side surface of the inner wall of the heat dissipation core body, the heat dissipation core body is an annular closed cavity, and an outer flow channel is formed in the annular closed cavity.
Furthermore, a plurality of coaxial heat dissipation cores which are arranged at intervals are arranged on the outer side surface of the inner wall of the heat dissipation core, and different types of heat exchange media are introduced into annular closed cavities of different heat dissipation cores.
Alternatively, the heat dissipation core can be not only annular, but also spiral distribution, forming cross-flow and countercurrent heat exchange structure.
Furthermore, annular fins used for secondary heat exchange are arranged in the annular closed cavity, and the annular closed cavity is divided into a plurality of secondary outer flow channels which are not communicated with each other by the plurality of annular fins at intervals.
Further, the cross-sectional shape of the secondary outer flow channel is rectangular, circular, triangular or other geometric shapes.
Furthermore, an inlet nozzle and an inlet liquid collecting cover, and an outlet nozzle and an outlet liquid collecting cover are arranged on the heat dissipation core body.
Furthermore, at least one annular partition plate is arranged in the heat dissipation core body, and the annular partition plate divides the annular closed cavity of the heat dissipation core body into secondary annular cavities which are coaxial, have different inner diameters and are not communicated with each other.
Furthermore, annular fins which are parallel to each other are arranged in the secondary annular cavity, and the quantity and the intervals of the annular fins in the secondary annular cavities with different inner diameters are different.
Furthermore, heat exchange media with different properties are introduced into the secondary annular cavities with different inner diameters.
Further, the heat dissipation core is formed by rolling a single plate or splicing a plurality of arc-section plates.
Furthermore, the annular heat exchanger is used for primary heat exchange of the fixed-wing aircraft air inlet and the environmental control system.
Further, because the annular heat exchanger has the characteristics of an annular structure, the annular heat exchanger can be used as a structural member (such as a supporting and connecting function) in an air inlet channel, and not only can realize the heat exchange function.
Compared with the prior art, the invention has the following characteristics:
(1) the annular radiator of the invention uses the annular structure as a structural component of an aircraft air inlet, and simultaneously uses the ram cold air as a cold source to cool down hot fluid introduced by an electronic equipment cabin or an engine on the aircraft.
(2) The invention makes full use of the limited space of the air inlet channel to arrange the cross-flow type aluminum finned annular radiator, and has the advantages of small self weight and high space utilization rate.
(3) When the cross-flow aluminum finned annular radiator works, as the forced convection mode between cold and hot fluids is the cross-flow mode, the self heat conductivity coefficient of the aluminum alloy material is high, and the efficiency of the cold and hot fluids in heat exchange through the heat exchange core body is higher.
(4) As an option, the outer flow passage is divided into a plurality of coaxial secondary annular cavities with different inner diameters, different heat exchange media are introduced into different secondary annular cavities, the flow directions of the heat exchange media in different secondary annular cavities are different, so that a downstream or upstream heat exchange structure is formed, and the partition plates and the annular fins are respectively used as primary and secondary heat exchange surfaces, so that more options are provided.
Drawings
FIG. 1 is a schematic view of a cross-flow aluminum finned annular heat sink of the present invention;
FIG. 2 is a schematic view of the interior of the hot runner (outer runner);
in the figure: 1-inlet liquid collecting cover, 2-outlet nozzle, 3-inlet nozzle, 4-outlet liquid collecting cover, 5-heat dissipation core body, 21-fins, 22-hot fluid flow channel and 23-heat dissipation core body inner wall.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made based on the common technical knowledge and conventional means in the art without departing from the technical idea of the present invention are included in the scope of the present invention.
As shown in fig. 1-2, the present embodiment provides a cross-flow type aluminum finned annular radiator, where the annular radiator is installed at the rear end of an air inlet and is in butt joint with an engine lip, and there are two types of heat exchange fluids.
The cross-flow aluminum finned annular radiator comprises a radiating core body 5, an inlet liquid collecting cover 1, an outlet liquid collecting cover 4, an inlet nozzle 3 and an outlet nozzle 2, wherein the inlet nozzle 3 and the outlet nozzle 2 are connected with the liquid collecting cover.
As shown in fig. 1, the present invention is a cross-flow type aluminum finned annular heat sink, wherein a heat dissipation core 5 itself is in a cylindrical ring shape, the heat dissipation core 5 is connected to an outer surface of a heat dissipation core inner wall 23, the heat dissipation core inner wall 23 is a cylindrical surface with a circumferential closed shape, a hollow portion of the cylindrical surface is used as a cold air flow channel, i.e., an inner flow channel, a flow direction of the cold air flow channel is an axial direction of the heat sink, a hot fluid flow channel 22, i.e., an inner flow channel, is arranged in a closed solid cavity formed by the heat dissipation core 5 and the heat dissipation core inner wall 23, the flow direction of the hot fluid flow channel 22 is along a circumferential direction of the heat sink, when the heat dissipation core 5 has only one hot fluid flow channel 22, the flow directions of the two fluids form a vertical cross form, i.e., a cross-flow type heat exchange structure.
Specifically, as shown in fig. 1, the heat dissipation core 5 of the cross-flow aluminum finned annular heat sink is formed by one or more aluminum alloy plates containing hot fluid flow channels 22 by edge welding. For example, the outer flow channel in the heat dissipation core 5 is finally formed by forming the fins 21 on the plate, then rolling the plate containing the fins 21 and welding the plate with the inner wall 23 of the heat dissipation core, that is, by rolling the linear fins 21 to form the annular fins 21, and then separating the heat dissipation core 5 from the annular closed cavity formed by the inner wall 23 of the heat dissipation core.
As shown in fig. 2, the outer flow channel in the cross-flow aluminum finned annular radiator core 5 is used as a hot fluid flow channel 22, the hot fluid flow channel 22 is divided into numerous small flow channels (secondary outer flow channels) by annular fins 21, and the cross section of the small flow channels is rectangular or circular or triangular, but is not limited to such shape.
As shown in fig. 1, a cross-flow type aluminum fin ring radiator comprises a radiating core 5, an inlet liquid collecting cover 1 connected with the core, an inlet nozzle 3, an outlet liquid collecting cover 4 and an outlet nozzle 2, wherein the radiating core 5 is in a hollow cylinder ring shape, the radiating core 5 can be in an integral ring shape or formed by splicing two or more arc sections, a cylindrical hollow part enclosed by an inner wall 23 of the radiating core is used as a flow channel of cold fluid and circulates along the axial direction, a hot fluid channel is arranged in a cylindrical entity of the radiating core 5 and circulates along the circumferential direction, the cylindrical hollow part is divided into small flow channels by fins 21, and the circulating directions of the cold fluid and the hot fluid form a cross-flow form which is perpendicular to each other.
In this embodiment, the heat dissipation core 5 is formed by rolling an aluminum alloy flat plate, a hot fluid flow channel is processed on the aluminum alloy plate before rolling, the cross section of the hot fluid flow channel 22 is rectangular but not limited to rectangular, and can also be processed into circular or triangular or other geometric shapes, the fins 21 in the hot fluid flow channel 22 divide the flow channel into a plurality of small flow channels at certain intervals, and simultaneously, all the fins 21 play a role in reinforcing the inner cavity of the whole hot fluid flow channel 22, so that the pressure bearing capacity is stronger.
In this embodiment, as shown in fig. 1, the inlet liquid collecting cover 1 and the outlet liquid collecting cover 4 are connected to two ends of the thermal fluid flow channel 22 of the heat dissipating core 5 by argon arc welding, and the inlet nozzle 3 and the outlet nozzle 2 are respectively connected to the inlet liquid collecting cover 1 and the outlet liquid collecting cover 4 by argon arc welding, and the thermal fluid flows along the circumference of the thermal fluid flow channel 22 after entering the liquid collecting cover from the inlet nozzle 3, and finally is collected at the outlet liquid collecting cover 4 and flows out from the outlet nozzle 2.
In this embodiment, when the annular heat sink works, the first heat exchange is performed between the cold fluid and the hot fluid through the inner wall of the cylindrical surface of the inner wall 23 of the heat dissipation core, and the second heat exchange is performed through the fins 21, so that the hot fluid transfers heat to the cold fluid, and the purpose of cooling the hot fluid by using the cold fluid is finally achieved.
Further, when more than two media are required for heat exchange, the following two options are available:
alternatively, the number of layers of the hot fluid flow channel 22 is increased, that is, the heat dissipation core 5 is divided into a plurality of coaxial hot fluid flow channels 22 (i.e., mutually nested circular rings) with different inner diameters by arranging a partition plate in the heat dissipation core 5, the hot fluid flow channels 22 with different inner diameters have different fluid media and different flow directions, the fins 21 have different intervals, the cross-sectional shapes of secondary annular cavities (small flow channels) are different, the partition plate serves as a primary heat exchange surface, and the fins 21 serve as a secondary heat exchange surface, so that a countercurrent heat exchange structure is formed;
and secondly, arranging a plurality of radiating cores 5 on the inner wall 23 of the radiating core at intervals along the axial direction of the annular radiator, wherein different heat exchange media flow in different radiating cores 5, and simultaneously, the heat exchange media and media in a cold runner form a cross-flow heat exchange structure.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. An annular radiator which characterized in that: the annular radiator is made of aluminum alloy, is arranged at the rear end of an air inlet of the airplane, is butted with the lip of an engine and comprises,
an inner flow passage arranged axially along the annular heat sink;
the outer flow channel is positioned on the outer side of the inner flow channel and is circumferentially arranged along the annular radiator, and the outer flow channel and the inner flow channel form a cross-flow type heat exchange structure;
the heat dissipation core body comprises a heat dissipation core body inner wall (23), the heat dissipation core body inner wall (23) serves as a primary heat exchange surface and forms a circumferential closed area, an inner flow channel is formed in the inner space of the circumferential closed area, a heat dissipation core body (5) which is coaxial with the heat dissipation core body inner wall (23) is arranged on the outer side surface of the heat dissipation core body inner wall (23), the heat dissipation core body (5) is an annular closed cavity, and an outer flow channel is formed in the annular closed cavity;
the annular closed cavity is internally provided with annular fins for secondary heat exchange, and the annular fins are arranged at intervals so as to divide the annular closed cavity into a plurality of secondary outer flow channels which are not communicated with each other.
2. The annular heat sink of claim 1, wherein: the cross section of the secondary outer flow passage is rectangular, circular or triangular.
3. The annular heat sink of claim 1, wherein: the heat dissipation core body (5) is provided with an inlet nozzle (3), an inlet liquid collecting cover (1), an outlet nozzle (2) and an outlet liquid collecting cover (4).
4. The annular heat sink of claim 1, wherein: at least one annular partition plate is arranged in the heat dissipation core body (5), and the annular closed cavity of the heat dissipation core body (5) is divided into secondary annular cavities which are coaxial, have different inner diameters and are not communicated with each other by the annular partition plate.
5. The annular heat sink of claim 4, wherein: annular fins which are parallel to each other are arranged in the secondary annular cavity, and the number and the intervals of the annular fins in the secondary annular cavities with different inner diameters are different.
6. The annular heat sink of claim 5, wherein: heat exchange media with different properties are introduced into the secondary annular cavities with different inner diameters.
7. The annular heat sink of claim 1, wherein: the heat dissipation core body (5) is formed by rolling a single plate or splicing a plurality of arc-section plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265655.1A CN112944950B (en) | 2021-03-11 | 2021-03-11 | Annular radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265655.1A CN112944950B (en) | 2021-03-11 | 2021-03-11 | Annular radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112944950A CN112944950A (en) | 2021-06-11 |
| CN112944950B true CN112944950B (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110265655.1A Active CN112944950B (en) | 2021-03-11 | 2021-03-11 | Annular radiator |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1419840A (en) * | 1972-11-16 | 1975-12-31 | Avco Corp | Plate type heat exchangers |
| US5078206A (en) * | 1990-06-12 | 1992-01-07 | Goetz Jr Edward E | Tube and fin circular heat exchanger |
| CN102840780A (en) * | 2012-08-01 | 2012-12-26 | 北京丰凯换热器有限责任公司 | Aluminum plate fin type annular radiator with fluid flowing in axial direction |
| CN102840777A (en) * | 2012-08-01 | 2012-12-26 | 北京丰凯换热器有限责任公司 | Aluminum plate-fin type annular heat radiator with radially flowing fluid |
| CN104673331A (en) * | 2015-02-25 | 2015-06-03 | 鞍山拜尔自控有限公司 | Heat exchange and heat energy recovery method employing coke oven ascension pipe and heat exchange and heat energy recovery device employing coke oven ascension pipe |
| CN207486416U (en) * | 2017-10-25 | 2018-06-12 | 新乡航空工业(集团)有限公司 | A kind of annular radiator |
-
2021
- 2021-03-11 CN CN202110265655.1A patent/CN112944950B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1419840A (en) * | 1972-11-16 | 1975-12-31 | Avco Corp | Plate type heat exchangers |
| US5078206A (en) * | 1990-06-12 | 1992-01-07 | Goetz Jr Edward E | Tube and fin circular heat exchanger |
| CN102840780A (en) * | 2012-08-01 | 2012-12-26 | 北京丰凯换热器有限责任公司 | Aluminum plate fin type annular radiator with fluid flowing in axial direction |
| CN102840777A (en) * | 2012-08-01 | 2012-12-26 | 北京丰凯换热器有限责任公司 | Aluminum plate-fin type annular heat radiator with radially flowing fluid |
| CN104673331A (en) * | 2015-02-25 | 2015-06-03 | 鞍山拜尔自控有限公司 | Heat exchange and heat energy recovery method employing coke oven ascension pipe and heat exchange and heat energy recovery device employing coke oven ascension pipe |
| CN207486416U (en) * | 2017-10-25 | 2018-06-12 | 新乡航空工业(集团)有限公司 | A kind of annular radiator |
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| Publication number | Publication date |
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| CN112944950A (en) | 2021-06-11 |
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