Fuel oil radiator and aeroengine comprising same

Abstract

The application discloses a fuel-oil radiator and an aero-engine comprising the same. The fuel-oil radiator comprises a shell, a fuel inlet face, a fuel outlet face and a plurality of radiating pipes. The shell comprises a lubricating oil inlet and a lubricating oil outlet, and the lubricating oil inlet is communicated with the lubricating oil outlet. The fuel inlet face and the fuel outlet face are respectively arranged at a first end and a second end of the shell. The fuel inlet face is a curved surface, and the fuel inlet face is concave from the first end to the inside of the shell. The plurality of radiating pipes are arranged in the shell, and each radiating pipe is communicated with the fuel inlet face and the fuel outlet face. In the application, the fuel inlet face is arranged in a curved surface, the heat exchange area of the fuel and the lubricating oil is increased, the fuel possibly containing ice can obtain sufficient heat at the fuel inlet, and the capacity of the fuel-oil radiator for melting ice at the fuel inlet is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a fuel-oil radiator and an aero-engine comprising the same. BACKGROUND

[0002] The fuel-oil radiator is one of the important components of the lubricating system of an aero-engine, which functions to heat fuel and cool lubricating oil, ensuring that the lubricating oil can be kept at a relatively suitable temperature, and at the same time, the temperature of the fuel is increased, which is beneficial to the subsequent combustion or servo actuation of the fuel, and is a key component to ensure the normal operation of the fuel system and the lubricating system of the engine.

[0003] The fuel-oil radiator of the engine heats the fuel by the heat of the lubricating oil, melts the ice possibly existing in the fuel, and heats the fuel, so that the temperature of the fuel at the inlet of the main fuel filter is above 0℃. However, in a certain aviation accident, the aircraft encountered a fuel transient icing environment, which refers to an environment in which the fuel delivered to the engine contains a high concentration of ice content in a relatively short time due to the accumulation and subsequent shedding of ice in the fuel system of the aircraft. The fuel-oil radiator used in the aero-engine failed to timely melt a large amount of ice reaching the inlet of the fuel-oil radiator, resulting in blockage of the fuel supply at the inlet of the fuel-oil radiator, causing a reduction in fuel flow, and then causing an uncommanded thrust reduction, which finally led to the accident. The existing measures are usually to meet the requirements through overall design of the engine lubricating system and / or standard operation of the pilot, but this method is accompanied by more stringent lubricating system working conditions and more complex flight operations, resulting in higher production costs and increasing the difficulty and risk of operation of the aircraft. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects in the prior art that more stringent lubricating system working conditions and more complex flight operations are required to cope with the fuel transient icing situation, resulting in higher production costs and increasing the difficulty and risk of operation of the aircraft. The present application provides a fuel-oil radiator and an aero-engine comprising the same.

[0005] The present application solves the above technical problems by the following technical scheme:

[0006] The present application provides a fuel-oil radiator, which comprises:

[0007] A housing comprising a lubricating oil flow inlet and a lubricating oil flow outlet, the lubricating oil flow inlet being in communication with the lubricating oil flow outlet;

[0008] A fuel inlet face and a fuel outlet face, the fuel inlet face and the fuel outlet face being respectively arranged at a first end and a second end of the housing, the fuel inlet face being a curved surface, and the fuel inlet face being recessed from the first end to the interior of the housing;

[0009] A plurality of heat dissipation pipes are arranged in the shell, and each of the heat dissipation pipes is in communication with the fuel inlet face and the fuel outlet face.

[0010] In the scheme, the above structure is adopted, the fuel inlet face is curved, the heat exchange area of the fuel and the lubricating oil at the fuel-lubricating oil radiator inlet is increased, the fuel possibly containing ice can obtain sufficient heat at the fuel inlet, the fuel-lubricating oil radiator can effectively melt the ice at the fuel inlet in the case of transient ice formation of the fuel, and the ice blocking at the fuel inlet is reduced or avoided. In addition, the curved fuel inlet face guides the transient large amount of ice to flow to the low part of the fuel inlet face, prevents the ice from gathering at the whole fuel inlet area of the fuel-lubricating oil radiator, ensures that the heat dissipation pipes connected with other areas outside the low part of the fuel inlet face are not blocked, and ensures that a certain amount of fuel still flows into the heat dissipation pipes and is heated and discharged from the fuel outlet face.

[0011] Preferably, the fuel inlet face is a conical face, a spherical face or an ellipsoidal face.

[0012] In the scheme, the above structure is adopted, the fuel inlet face is a conical face, a spherical face or an ellipsoidal face, and the fuel-lubricating oil radiator is convenient to process.

[0013] Preferably, the fuel outlet face is a curved face, and the fuel outlet face is recessed from the second end to the outside of the shell.

[0014] Preferably, the fuel outlet face is a conical face, a spherical face or an ellipsoidal face.

[0015] In the scheme, the above structure is adopted, the fuel outlet face is a conical face, a spherical face or an ellipsoidal face, and the fuel-lubricating oil radiator is convenient to process.

[0016] Preferably, the lengths of the heat dissipation pipes are the same.

[0017] In the scheme, the above structure is adopted, and the fuel in each heat dissipation pipe can obtain sufficient heat, so that the fuel in different heat dissipation pipes can not obtain uneven heat.

[0018] Preferably, the end of the heat dissipation pipe away from the fuel outlet face does not protrude the fuel inlet face.

[0019] In the scheme, the above structure is adopted, and the heat dissipation pipes can be completely immersed in the lubricating oil during the working process of the fuel-lubricating oil radiator, the heat of the lubricating oil can be effectively transferred to the fuel, the case that the local temperature of the heat dissipation pipe is relatively low and the ice in the fuel cannot be melted is prevented, the fuel at the inlet of the fuel-lubricating oil radiator can enter the heat dissipation pipe along the fuel inlet face, and the case that the fuel heated on the fuel inlet face cannot enter the heat dissipation pipe and still accumulates on the fuel inlet face is avoided.

[0020] Preferably, the lowest part of the fuel inlet face is connected with the heat dissipation pipe.

[0021] In the present solution, the above structure is adopted, and the fuel inlet face can guide the fuel, water and ice to flow to the lowest part of the fuel inlet face. The fuel gathered at the lowest part of the fuel inlet face can be discharged through the heat dissipation pipe connected with the lowest part of the fuel inlet face.

[0022] Preferably, the shell is in a cylindrical structure, and the first end and the second end are opposite ends of the shell.

[0023] In the present solution, the above structure is adopted, and the shell is in a cylindrical and tubular structure, which is convenient for processing, improves production efficiency and reduces production cost.

[0024] Preferably, a plurality of partitions are arranged inside the shell, and the partitions and the shell form oil flow channels.

[0025] In the present solution, the above structure is adopted, and the partitions are arranged to make the oil flow in specific oil flow channels. In addition, the length of the oil flow channels is increased, and the heating distance of the oil is increased, so that the fuel in the heat dissipation pipe can obtain sufficient heat.

[0026] Preferably, the partitions include a vertical partition, the vertical partition is located in the middle of the shell, one end of the vertical partition away from the fuel inlet face is arranged to be spaced apart from the fuel outlet face, and the oil inlet and the oil outlet are respectively located on two sides of the vertical partition.

[0027] In the present solution, the above structure is adopted, and the oil flows into the oil inlet, sequentially passes through the oil flow channel (referred to as the first channel) between the side wall of the shell close to the oil inlet and the vertical partition, the gap between one end of the vertical partition away from the fuel inlet face and the fuel outlet face, the oil flow channel (referred to as the second channel) between the side wall of the shell close to the oil outlet and the vertical partition, and finally flows out of the oil outlet. The vertical partition can block the mutual flow of the oil between the first channel and the second channel.

[0028] Preferably, one end of the vertical partition away from the fuel outlet face is connected with the fuel inlet face.

[0029] In the present solution, the above structure is adopted, so that when the oil flows from the first channel into the second channel, it can only pass through the gap between one end of the vertical partition away from the fuel inlet face and the fuel outlet face, so that the oil flows in specific oil flow channels.

[0030] Preferably, the partition plate comprises a horizontal partition plate, the heat dissipation pipe penetrates through the horizontal partition plate, the horizontal partition plate comprises a side horizontal partition plate and a middle horizontal partition plate, the side horizontal partition plate is connected to the inner wall of the shell, and the middle horizontal partition plate is an extension plate arranged on both sides of the vertical partition plate.

[0031] In the scheme, the horizontal partition plate comprises a side horizontal partition plate and a middle horizontal partition plate, which further increases the length of the lubricating oil channel and increases the heating distance of the lubricating oil. During the flow of the lubricating oil, the relatively cold fuel and the relatively hot lubricating oil complete heat exchange.

[0032] Preferably, the side horizontal partition plate is an annular protruding plate arranged on the inner wall of the shell, and the number of the side horizontal partition plates and the middle horizontal partition plates is multiple, and the multiple side horizontal partition plates are arranged along the extension direction of the shell.

[0033] In the scheme, the structure increases the turning points in the lubricating oil channel, further increases the length of the lubricating oil channel, increases the heat exchange distance, and makes the fuel in the heat dissipation pipe obtain sufficient heat.

[0034] The application further provides an aero-engine comprising the fuel lubricating oil radiator.

[0035] The positive progress effect of the application is that the fuel inlet face of the fuel lubricating oil radiator is arranged in a curved surface, which increases the heat exchange area of the fuel and the lubricating oil at the inlet of the fuel lubricating oil radiator, so that the fuel possibly containing ice obtains sufficient heat at the fuel inlet, effectively improves the ice melting capacity of the fuel lubricating oil radiator at the fuel inlet in the case of instantaneous icing of the fuel, and reduces or avoids the situation that the ice blocks at the fuel inlet. In addition, the curved fuel inlet face guides a large amount of instantaneous ice to flow to the low part of the fuel inlet face, prevents the ice from gathering in the entire fuel inlet area of the fuel lubricating oil radiator, so that the heat dissipation pipes connected to other areas outside the low part of the fuel inlet face are not blocked, a certain amount of fuel still flows into the heat dissipation pipes, and is heated and discharged from the fuel outlet face through the heat dissipation pipes. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 FIG. 1 is a structural schematic diagram of a fuel lubricating oil radiator according to a preferred embodiment of the application.

[0037] Figure 2 FIG. 2 is a partial structural schematic diagram of the fuel lubricating oil radiator according to the preferred embodiment of the application.

[0038] Figure 3 FIG. 3 is a partial structural schematic diagram of the fuel lubricating oil radiator according to the preferred embodiment of the application.

[0039] Figure 4 FIG. 4 is a partial structural schematic diagram of the fuel lubricating oil radiator according to the preferred embodiment of the application.Figure 1 A-A sectional view.

[0040] Figure 5 Fig. 4 is a schematic view of the internal structure of a fuel oil radiator according to a preferred embodiment of the present application.

[0041] Figure 6 Fig. 5 is a schematic view of the flow of oil in a fuel oil radiator according to a preferred embodiment of the present application.

[0042] BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Housing 1

[0044] Oil inlet 11

[0045] Oil outlet 12

[0046] Fuel inlet face 2

[0047] Fuel outlet face 3

[0048] Radiator tube 4

[0049] Partition 5

[0050] Vertical partition 51

[0051] Horizontal partition 52

[0052] Side horizontal partition 521

[0053] First side horizontal partition 5211

[0054] Second side horizontal partition 5212

[0055] Third side horizontal partition 5213

[0056] Fourth side horizontal partition 5214

[0057] Middle horizontal partition 522

[0058] First middle horizontal partition 5221

[0059] Second middle horizontal partition 5222

[0060] Third middle horizontal partition 5223

[0061] Fourth middle horizontal partition 5224 DETAILED DESCRIPTION

[0062] The present application will be further described by way of example with reference to the accompanying drawings.

[0063] A fuel oil radiator according to an embodiment of the present application is provided, as shown in Figures 1 to 6The fuel-oil radiator comprises a shell 1, a fuel inlet face 2 and a fuel outlet face 3. The shell 1 comprises a lubricating oil inlet 11 and a lubricating oil outlet 12, the lubricating oil inlet 11 is communicated with the lubricating oil outlet 12, the fuel inlet face 2 and the fuel outlet face 3 are respectively arranged at the first end and the second end of the shell 1, the fuel inlet face 2 is a curved surface, and the fuel inlet face 2 is concave from the first end to the inside of the shell 1. The fuel-oil radiator further comprises a plurality of heat dissipation pipes 4, the plurality of heat dissipation pipes 4 are arranged in the shell 1, and each heat dissipation pipe 4 is communicated with the fuel inlet face 2 and the fuel outlet face 3. The number of the heat dissipation pipes 4 can be set according to actual requirements. The lubricating oil flows into the inside of the shell 1 from the lubricating oil inlet 11 and flows out from the lubricating oil outlet 12, and the lubricating oil flows in the inside of the shell 1 to heat and melt the fuel gathered on the fuel inlet face 2, so as to prevent the transient large amount of ice in the fuel from gathering at the inlet of the fuel-oil radiator. The fuel flows into the heat dissipation pipe 4 from the fuel inlet face 2, the heat dissipation pipe 4 transmits the heat of the lubricating oil to the fuel to realize heat exchange, the fuel is heated by the heat of the lubricating oil, and the heated fuel is discharged from the fuel outlet face 3 through the heat dissipation pipe 4.

[0064] In the embodiment, the fuel inlet face 2 is a curved surface, the heat exchange area of the fuel and the lubricating oil at the inlet of the fuel-oil radiator is increased, the fuel possibly containing ice can obtain sufficient heat at the fuel inlet, the ability of the fuel-oil radiator to melt ice at the fuel inlet is effectively improved in the case of transient icing of the fuel, and the situation that the ice is blocked at the fuel inlet is reduced or avoided. In addition, the curved fuel inlet face 2 guides the transient large amount of ice to flow to the low part of the fuel inlet face 2, prevents the ice from gathering at the whole fuel inlet area of the fuel-oil radiator, ensures that the heat dissipation pipes 4 connected with other areas outside the low part of the fuel inlet face 2 are not blocked, and ensures that a certain amount of fuel still flows into the heat dissipation pipe 4 to be heated and discharged from the fuel outlet face 3 through the heat dissipation pipe 4.

[0065] Specifically, two through holes are arranged on the side wall of the shell 1 as the lubricating oil inlet 11 and the lubricating oil outlet 12, circular through holes are arranged on the fuel inlet face 2 and the fuel outlet face 3, the two ends of the heat dissipation pipe 4 are respectively inserted into the circular through hole of the fuel inlet face 2 and the circular through hole of the fuel outlet face 3, and the heat dissipation pipe 4 is a capillary heat dissipation pipe.

[0066] In the embodiment, the fuel inlet face 2 is a conical surface, a spherical surface or an ellipsoidal surface, and the fuel inlet face 2 is convenient to process.

[0067] In other embodiments, the fuel inlet face 2 can also adopt other curved surface structures, as long as the fuel inlet face 2 is concave from the first end to the inside of the shell 1, the heat exchange area of the fuel and the lubricating oil is increased, and the fuel, water and ice are guided to flow to the low part of the fuel inlet face 2.

[0068] The fuel outlet surface 3 is a curved surface, and the fuel outlet surface 3 is concave from the second end to the outside of the shell 1. Preferably, the fuel inlet surface 2 and the fuel outlet surface 3 have the same shape, and the same production line can be used for processing when the fuel inlet surface 2 and the fuel outlet surface 3 are produced, which is high in production efficiency and low in processing cost. In addition, the fuel inlet surface 2 and the fuel outlet surface 3 have high replaceability in case of damage.

[0069] In the embodiment, the fuel outlet surface 3 is a conical surface, a spherical surface or an ellipsoidal surface, which is convenient for processing.

[0070] In other embodiments, the fuel outlet surface 3 can also adopt other curved surface structures, as long as it is concave from the second end to the outside of the shell 1.

[0071] In the embodiment, the lengths of the heat dissipation pipes 4 are the same, which ensures that the fuel in each heat dissipation pipe 4 can obtain sufficient heat and reduces the situation that the heat obtained by the fuel in different heat dissipation pipes 4 is uneven.

[0072] The end of the heat dissipation pipe 4 away from the fuel outlet surface 3 does not protrude the fuel inlet surface 2. For example, the end of each heat dissipation pipe 4 away from the fuel outlet surface 3 is flush with the connection between the heat dissipation pipe 4 and the fuel inlet surface 2. The heat dissipation pipe 4 does not protrude the fuel inlet surface 2, which ensures that the heat dissipation pipe 4 can be fully immersed in the oil during the working process of the oil cooler, so that the heat of the oil can be effectively transferred to the fuel, preventing the situation that the local temperature of the heat dissipation pipe 4 is relatively low and cannot melt the ice in the fuel. In addition, it ensures that the fuel at the inlet of the oil cooler can enter the heat dissipation pipe 4 along the fuel inlet surface 2, avoiding the situation that the fuel on the fuel inlet surface 2 cannot enter the heat dissipation pipe 4 after being heated and still accumulates on the fuel inlet surface 2.

[0073] The lowest part of the fuel inlet surface 2 is connected with the heat dissipation pipe 4. Since the fuel inlet surface 2 can guide the fuel, water and ice to flow to the low part of the fuel inlet surface 2, the fuel accumulated at the low part of the fuel inlet surface 2 can be discharged through the heat dissipation pipe 4 connected with the lowest part of the fuel inlet surface 2.

[0074] The shell 1 has a cylindrical structure, and the first end and the second end are opposite ends of the shell 1. The shell 1 adopts a cylindrical and tubular structure, which is convenient for processing, improves production efficiency and reduces production cost.

[0075] Specifically, the diameter of the casing 1 is consistent from top to bottom, with the first end being the upper end and the second end being the lower end. The fuel inlet surface 2 and the fuel outlet surface 3 have the same shape, both being conical, with the cone tips located at the center of the fuel inlet surface 2 and the fuel outlet surface 3, respectively. Each cooling pipe 4 is vertically installed, ensuring that each installed cooling pipe 4 has the same length. The conical shape of the fuel inlet surface 2 ensures that ice in the fuel can accumulate at the cone tip due to gravity. The flowing lubricating oil can then continuously transfer heat to the ice accumulated at the cone tip, effectively promoting the melting of the ice in the fuel.

[0076] Multiple baffles 5 are provided inside the housing 1, forming an oil passage between the baffles 5 and the housing 1. By setting the baffles 5, the oil flows in a specific oil passage; in addition, the length of the oil passage is increased, increasing the distance for oil heating, so that the fuel in the heat dissipation pipe 4 receives sufficient heat.

[0077] The partition 5 includes a vertical partition 51, which is located in the middle of the housing 1. The end of the vertical partition 51 away from the fuel inlet surface 2 is spaced apart from the fuel outlet surface 3. The lubricating oil inlet 11 and the lubricating oil outlet 12 are located on both sides of the vertical partition 51. The lubricating oil flows in from the lubricating oil inlet 11, passes sequentially through the lubricating oil channel (referred to as the first channel) between the side wall of the housing 1 near the lubricating oil inlet 11 and the vertical partition 51, the gap between the end of the vertical partition 51 away from the fuel inlet surface 2 and the fuel outlet surface 3, and the lubricating oil channel (referred to as the second channel) between the side wall of the housing 1 near the lubricating oil outlet 12 and the vertical partition 51, and finally flows out from the lubricating oil outlet 12. The vertical partition 51 can prevent the lubricating oil from flowing between the first channel and the second channel.

[0078] In this embodiment, the end of the vertical partition 51 away from the fuel outlet surface 3 is connected to the fuel inlet surface 2, so that when the lubricating oil flows from the first channel into the second channel, it can only flow through the gap between the end of the vertical partition 51 away from the fuel inlet surface 2 and the fuel outlet surface 3, allowing the lubricating oil to flow in a specific lubricating oil channel.

[0079] In other embodiments, the end of the vertical partition 51 away from the fuel outlet surface 3 may also be spaced apart from the fuel inlet surface 2, so that the lubricating oil can pass through the gap between the end of the vertical partition 51 away from the fuel outlet surface 3 and the fuel inlet surface 2 when it flows in the housing 1.

[0080] The partition 5 includes a horizontal partition 52, through which the heat dissipation pipe 4 passes. The horizontal partition 52 includes a side horizontal partition 521 and a middle horizontal partition 522. The side horizontal partition 521 is connected to the inner wall of the housing 1, and the middle horizontal partition 522 is an extension plate provided on both sides of the vertical partition 51. The side horizontal partition 521 and the middle horizontal partition 522 are arranged alternately. An oil passage is formed between the shell 1, the side diaphragm 521, the middle diaphragm 522, and the vertical diaphragm 51. Oil flows in from the oil inlet 11 and passes sequentially through the side wall of the shell 1 near the oil outlet 12, the side diaphragm 521, the oil passage between the middle diaphragm 522 and the vertical diaphragm 51, the gap between the end of the vertical diaphragm 51 away from the fuel inlet surface 2 and the fuel outlet surface 3, the side wall of the shell 1 near the oil outlet 12, the side diaphragm 521, the middle diaphragm 522, and the vertical diaphragm 51. The diaphragm 52, using both the side diaphragm 521 and the middle diaphragm 522, further increases the length of the oil passage and the path for oil heating. During the oil flow, the relatively cold fuel and the relatively hot oil exchange heat.

[0081] The side diaphragm 521 is an annular protrusion located on the inner wall of the housing 1. Specifically, the annular protrusion extends radially along the side wall of the housing 1. There are multiple side diaphragms 521 and multiple central diaphragms 522, with the multiple side diaphragms 521 spaced apart along the extending direction of the housing 1. Increasing the turning points in the lubricating oil passage further increases the length of the lubricating oil passage, increases the heat exchange path, and ensures that the fuel in the cooling pipe 4 receives sufficient heat.

[0082] Specifically, such as Figure 6 As shown, the inner wall of the housing 1 is provided with a first side horizontal partition 5211, a second side horizontal partition 5212, a third side horizontal partition 5213, and a fourth side horizontal partition 5214 at intervals. The vertical partition 51 has a first central horizontal partition 5221, a second central horizontal partition 5222, a third central horizontal partition 5223, and a fourth central horizontal partition 5224 at intervals on both sides. The fourth central horizontal partition 5224 is installed on the end face of the vertical partition 51 near the fuel outlet surface 3. When the lubricating oil radiator is working, lubricating oil enters from the lubricating oil inlet 11 (located at...). Figure 6 On the right side wall of the shell 1 shown, the first shell side (corresponding to the first side partition 5211 (right half) and the shell 1 (right half) form the first shell side (corresponding to the first shell side). Figure 6 In the middle ①), the first side diaphragm 5211 (right half) and the first middle diaphragm 5221 (right half) flow sequentially into the second shell side (corresponding to) ... Figure 6 The third shell side (corresponding to the first central transverse diaphragm 5221 (right half) and the second side transverse diaphragm 5212 (right half) constitute the third shell side. Figure 6The fourth shell side (corresponding to) consists of the second side diaphragm 5212 (right half) and the second middle diaphragm 5222 (right half). Figure 6 The fifth shell side (corresponding to the middle ④), the second middle transverse diaphragm 5222 (right half) and the third side transverse diaphragm 5213 (right half) form the fifth shell side. Figure 6 The sixth shell pass, consisting of the middle (⑤), the third side diaphragm 5213 (right half), and the third central diaphragm 5223 (right half), is the corresponding... Figure 6 The seventh shell pass, consisting of the third central diaphragm 5223 (right half) and the fourth side diaphragm 5214 (right half), corresponds to... Figure 6 The eighth shell pass (corresponding to the fourth side diaphragm 5214 (right half) and the fourth central diaphragm 5224 (right half) is composed of the middle ⑦), the fourth side diaphragm 5214 (right half). Figure 6 The ninth shell pass, consisting of the middle (⑧), the fourth middle transverse diaphragm 5224 (right half), and the fuel outlet surface 3, is the corresponding... Figure 6 (9) Subsequently, the lubricating oil enters the left half from the right half through the ninth shell pass channel, and then sequentially enters the tenth shell pass (corresponding to) formed by the fourth central transverse diaphragm 5224 (left half) and the fourth side transverse diaphragm 5214 (left half). Figure 6 The eleventh shell side (corresponding to the middle ⑩), the fourth side transverse diaphragm 5214 (left half), and the third middle transverse diaphragm 5223 (left half) constitute the eleventh shell side. Figure 6 middle The twelfth shell pass, consisting of the third central diaphragm 5223 (left half) and the third side diaphragm 5213 (left half), corresponds to... Figure 6 middle The thirteenth shell pass, consisting of the third side diaphragm 5213 (left half) and the second central diaphragm 5222 (left half), corresponds to... Figure 6 middle The fourteenth shell side (corresponding to) consists of the second central diaphragm 5222 (left half) and the second side diaphragm 5212 (left half). Figure 6 middle The fifteenth shell pass, consisting of the second side diaphragm 5212 (left half) and the first central diaphragm 5221 (left half), is composed of the second side diaphragm 5212 (left half). Figure 6 middle The sixteenth shell pass (corresponding to) consists of the first central diaphragm 5221 (left half) and the first side diaphragm 5211 (left half). Figure 6 middle The seventeenth shell pass, consisting of the first side diaphragm 5211 (left half) and the shell 1 (left half), is formed by... Figure 6 Figure 6 Figure 6 middle After that, it reaches the lubricating oil outlet 12. The fuel flows along multiple cooling pipes 4 from the upper surface of the fuel inlet surface 2 to the lower surface of the fuel outlet surface 3. During the flow of the lubricating oil, the relatively cold fuel and the relatively hot lubricating oil exchange heat.

[0083] This invention also provides an aircraft engine that includes a fuel oil radiator as described in any of the above embodiments.

[0084] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A radiator for use with lubricating oil, characterized in that, The lubricating oil radiator includes: The housing includes an oil inlet and an oil outlet, wherein the oil inlet is connected to the oil outlet; The fuel inlet surface and the fuel outlet surface are respectively located at the first end and the second end of the housing. The fuel inlet surface is curved and is recessed from the first end toward the interior of the housing. Multiple heat dissipation pipes are placed inside the housing, and each heat dissipation pipe is connected to the fuel inlet surface and the fuel outlet surface.

2. The oil-fired radiator as described in claim 1, characterized in that, The fuel inlet surface is a conical, spherical, or ellipsoidal surface.

3. The oil-fired radiator as described in claim 1, characterized in that, The fuel outlet surface is curved, and the fuel outlet surface is recessed from the second end toward the outside of the housing.

4. The oil-fired radiator as described in claim 3, characterized in that, The fuel outlet surface is a conical, spherical, or ellipsoidal surface.

5. The oil-fired radiator as described in claim 1, characterized in that, Each of the aforementioned heat pipes is the same length.

6. The oil-fired radiator as described in claim 1, characterized in that, The end of the heat dissipation pipe furthest from the fuel outlet does not protrude from the fuel inlet.

7. The oil-fired radiator as described in claim 1, characterized in that, The heat dissipation pipe is connected to the lowest point of the fuel inlet surface.

8. The oil-fired radiator as described in claim 1, characterized in that, The shell is a cylindrical structure, with the first end and the second end being two opposite ends on the shell.

9. The oil-fired radiator as described in claim 1, characterized in that, Multiple baffles are provided inside the housing, and an oil channel is formed between the baffles and the housing.

10. The oil-fired radiator as described in claim 9, characterized in that, The partition includes a vertical partition located in the middle of the housing. One end of the vertical partition away from the fuel inlet surface is spaced apart from the fuel outlet surface. The lubricating oil inlet and the lubricating oil outlet are located on opposite sides of the vertical partition.

11. The oil-fired radiator as described in claim 10, characterized in that, The end of the vertical partition away from the fuel outlet surface is connected to the fuel inlet surface.

12. The oil-fired radiator as described in claim 10, characterized in that, The partition includes a horizontal partition, through which the heat dissipation pipe passes. The horizontal partition includes a side horizontal partition and a middle horizontal partition. The side horizontal partition is connected to the inner wall of the housing. The middle horizontal partition is an extension plate located on both sides of the vertical partition. The side horizontal partition and the middle horizontal partition are arranged alternately.

13. The oil-fired radiator as described in claim 12, characterized in that, The side diaphragm is an annular protrusion on the inner wall of the housing. There are multiple side diaphragms and multiple central diaphragms, which are spaced apart along the extension direction of the housing.

14. An aircraft engine, characterized in that, The aircraft engine includes a fuel oil radiator as described in any one of claims 1-13.

Images