CN101270690B - Fuel oil and lubricating oil heat exchanger of light aircraft engine - Google Patents
Fuel oil and lubricating oil heat exchanger of light aircraft engine Download PDFInfo
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- CN101270690B CN101270690B CN2008101032841A CN200810103284A CN101270690B CN 101270690 B CN101270690 B CN 101270690B CN 2008101032841 A CN2008101032841 A CN 2008101032841A CN 200810103284 A CN200810103284 A CN 200810103284A CN 101270690 B CN101270690 B CN 101270690B
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- heat
- fuel
- oil
- lubricating oil
- aircraft engine
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Abstract
The invention designs a light fuel/lubricant heat exchanger based on the basic principle of heat transfer theory, which is used for cooling aircraft engine oil to ensure the safe operation of the engine. Compared with the conventional the fuel/lubricant heat exchanger, the fuel/lubricant heat exchanger of the invention has the advantages of small size, light weight and high heat exchange strength. The thin aluminum sheet (or copper sheet) with high coefficient of thermal conductivity is folded to form the core of the heat exchanger. The thickness of metal sheet is around 0.2 to 0.4mm. Space length between two adjacent metal sheets is about 0.3 to 0.5mm. According to flow rate, the core is divided into a plurality of fuel galleries and lubricating oil galleries. And then, the whole core is put into a pressure-proof tank. When the exchanger is in use, the lubricating oil with high temperature passes heat to the metal sheet positioned on the lubricating oil side by the means of convection heat. And the heat continues to be passed to the metal sheet positioned on the fuel side by the means of heat conduction. Finally, the heat is passed to the fuel by the means of convection heat to cool the lubricating oil.
Description
Technical field
The present invention relates to a kind of light aircraft engine fuel oil/oil heat exchanger, be used for the lubricating oil of aircraft engine oil system is cooled off, work safely and reliably to guarantee the aeroengine bearing lubrication system.Cooling medium is the fuel oil of aeroengine, burns in the firing chamber that can directly enter motor after the fuel oil heat absorption.It can be applicable in the various aeroengines that need cool off lubricating oil.
Background technique
Aeroengine is the device that power is provided for various aircraft, and the weight of himself is to the performance index important influence of motor, and is therefore, very harsh for the restriction of the motor and the various weights of attachment thereof.Lubricating oil/usual heat-exchanger is one of main accessories of aeroengine, its objective is the high temperature lubricating oil in the cooling aircraft engine oil system.In order to bear sufficiently high working pressure and exchange capability of heat, the most of shell-and-tube heat exchanger that adopts of conventional at present lubricating oil/usual heat-exchanger has into hundred even thousands of very thin steel pipes in heat exchanger.These steel pipes bring very big difficulty to processing on the one hand, because the density of steel is bigger, make heat exchanger very heavy on the other hand.
Therefore, develop a kind of can satisfy under setting pressure motor oil is enough cooled off, and the light lubricating oil/usual heat-exchanger of weight has great importance.
Summary of the invention
The problem to be solved in the present invention is, requires the light as far as possible characteristics of its weight according to aeroengine, satisfying lubricating oil when cooling requires, and makes that its volume is as far as possible little, weight is light as far as possible.
For addressing the above problem, the invention provides such technological scheme: flake aluminum (or copper sheet) with multilayer high-thermal conductivity coefficient, its thickness is about 0.2～0.4mm, one side joint of aluminium flake (or copper sheet) is received high temperature lubricating oil liberated heat, be delivered to opposite side through transmission of heat, last these heats pass to the lower fuel oil of temperature again, and the temperature of lubricating oil is reduced, and have realized the cooling of lubricating oil.
Heat exchanger surface is made up of the flake aluminum (or copper sheet) of multilayer high-thermal conductivity coefficient.
The thickness of heat exchange sheet is 0.2～0.4mm.
Heat exchange sheet spacing 0.3～0.5mm
Heat exchange sheet is divided into one or more fuel oils and oil pathway.
The thin slice of fuel oil side and lubricating oil side is same thin slice, and the centre must not be interrupted.
Whole heat exchange core is placed in the withstand voltage casing.
The both sides of withstand voltage casing have the import and the outlet connection of lubricating oil and fuel oil respectively.
The oil pathway that the high temperature lubricating oil is formed via composite wafer during work, with thin slice generation convection heat exchange, the high temperature lubricating oil is emitted heat, thin slice in the heat tunnel and in heat conducting mode with the thin slice of these heat transfer to the fuel oil side, the thin slice of fuel oil side is because transmission of heat raises its temperature, and with low temperature fuel oil generation convection heat exchange, the fuel oil that the heat transferred temperature is lower, thus realize the cooling of motor oil.
Compared with prior art, the present invention is based on the thermal conduction study basic principle and a kind of light aircraft engine lubricating oil/fuel oil heat exchanger of designing.The first, make full use of minim channel and had this characteristic of very high convection transfer rate; The second, because passage is smaller, can in limited volume, realize very high heat exchanger surface density; The 3rd, made full use of that highly heat-conductive material has this characteristic of very high fin efficiency under identical heat transfer boundary condition, make the long-pending maximum value that obtains of heat exchange area and efficient.The 4th, heat exchanger surface does not bear pressure, can adopt very low aluminium of intensity or copper.More than the design that comprehensively can realize light aircraft engine fuel oil/oil heat exchanger of four technology.
The utility model is done to carry out the detailed description in a step below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation that the present invention preferably implements.
Parts 1, pressure hull among the figure; 2, heat exchange aluminium flake (copper sheet); 3, fuel gallery; 4, fuel outlet joint; 5, dividing plate; 6, lubricating oil outlet connection; 7, oil pathway; 8, dividing plate; 9, fuel gallery; 10, fuel outlet joint; 11, fuel gallery; 12, fuel outlet joint; 13, dividing plate; 14, oil pathway; 15, lubricating oil outlet connection; 16, dividing plate, 17, fuel outlet joint; 18, fuel inlet fitting; 19, lubricating oil inlet union; 20, fuel inlet fitting.
Embodiment
A kind of light-duty aircraft engine oil/usual heat-exchanger, the aluminium flake (or copper sheet) that its inside is 0.2～0.4mm by many thickness with same structure is superimposed with each other and forms the core body of heat exchanger, flow and resistance according to lubricating oil and fuel oil require situation, core body can be divided into several fuel oils and oil pathway, in the mode of execution as shown in Figure 1, oil pathway is 1, and the fuel gallery is 2.Corresponding with oil pathway on casing have a lubricating oil inlet/outlet joint, and the have fuel oil corresponding with the fuel gallery imported and exported joint.
Referring to the utility model preferred embodiment shown in Figure 1.
The lubricating oil that need be cooled is drawn heat exchanger through lubricating oil outlet connection 6 (15) with compiling after the thin slice heat exchange again in lubricating oil inlet union 19 is introduced the oil pathway 7 (14) of heat exchanger core bodies.Fuel oil is incorporated into respectively in two fuel galleries 3 and 9 (11) of heat exchanger core body through fuel inlet fitting 18 and 20, absorbs the heat of being come by the thin slice conduction, compiles at last respectively and draws heat exchanger from fuel outlet joint 4 (17) and 10 (12).In order to improve heat exchange efficiency, lubricating oil also can be introduced by the lubricating oil outlet connection 15 from figure, is drawn by inlet union 19, to improve the mean temperature difference of heat exchange.
Based on design concept of the present invention, its casing and outer shape are not openly limited by the present invention can, and all the other structures are all within protection scope of the present invention.
Claims (6)
1. aircraft engine oil/usual heat-exchanger, it is characterized in that: the core body of heat exchanger is to be formed by stacking by flake aluminum with high thermal conductivity coefficient or copper sheet, the thickness of aluminium flake or copper sheet is 0.2～0.4mm, the spacing of adjacent two aluminium flakes or copper sheet is 0.3～0.5mm, according to flow core body is divided into one or more fuel galleries and oil pathway, whole heat exchange core is placed in the withstand voltage casing, and the fuel-intake connection and the delivery connection of fuel oil and lubricating oil is housed respectively on the casing.
2. aircraft engine oil/usual heat-exchanger according to claim 1 is characterized in that: be to be formed by stacking by multilayer aluminium or copper foil in the withstand voltage case.
3. aircraft engine oil/usual heat-exchanger according to claim 2 is characterized in that: the thickness of thin slice is 0.2～0.4mm.
4. aircraft engine oil/usual heat-exchanger according to claim 2 is characterized in that: the distance between the thin slice is 0.3～0.5mm.
5. aircraft engine oil/usual heat-exchanger according to claim 1 is characterized in that: respectively core body is divided into one or more fuel galleries and oil pathway according to fuel oil and oil flow.
6. aircraft engine oil/usual heat-exchanger according to claim 1 is characterized in that: heat exchanger core body is encapsulated in the withstand voltage casing, and fuel oil inlet/outlet joint and lubricating oil inlet/outlet joint are arranged respectively on the withstand voltage casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101032841A CN101270690B (en) | 2008-04-02 | 2008-04-02 | Fuel oil and lubricating oil heat exchanger of light aircraft engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101032841A CN101270690B (en) | 2008-04-02 | 2008-04-02 | Fuel oil and lubricating oil heat exchanger of light aircraft engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101270690A CN101270690A (en) | 2008-09-24 |
| CN101270690B true CN101270690B (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101032841A Expired - Fee Related CN101270690B (en) | 2008-04-02 | 2008-04-02 | Fuel oil and lubricating oil heat exchanger of light aircraft engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101270690B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762634B (en) * | 2016-08-19 | 2020-09-15 | 中国航发商用航空发动机有限责任公司 | Aircraft engine lubricating oil tank and aircraft engine lubricating oil system |
| CN106762150B (en) * | 2016-11-24 | 2018-06-12 | 新乡航空工业(集团)有限公司 | A kind of aircraft engine fires lubricating oil integrated heat exchange device |
| CN109356725B (en) * | 2018-12-13 | 2021-09-03 | 中国航发沈阳发动机研究所 | Short-time fuel cooling system for aircraft engine |
| CN113513929A (en) * | 2021-05-17 | 2021-10-19 | 四川航天中天动力装备有限责任公司 | Internal and external spiral fin type temperature control combustion lubricating oil heat exchanger based on compact channel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184184Y (en) * | 1994-01-07 | 1994-11-30 | 沈阳黎明发动机制造公司工程机械厂 | Detachable plate-type heat exchanger |
| CN2338712Y (en) * | 1998-10-09 | 1999-09-15 | 臧海 | High efficiency fin type shell-and-tube exchanger |
| US7195060B2 (en) * | 2005-04-01 | 2007-03-27 | Dana Canada Corporation | Stacked-tube heat exchanger |
-
2008
- 2008-04-02 CN CN2008101032841A patent/CN101270690B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2184184Y (en) * | 1994-01-07 | 1994-11-30 | 沈阳黎明发动机制造公司工程机械厂 | Detachable plate-type heat exchanger |
| CN2338712Y (en) * | 1998-10-09 | 1999-09-15 | 臧海 | High efficiency fin type shell-and-tube exchanger |
| US7195060B2 (en) * | 2005-04-01 | 2007-03-27 | Dana Canada Corporation | Stacked-tube heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN101270690A (en) | 2008-09-24 |
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Granted publication date: 20100609 Termination date: 20120402 |