CN113513929A - Internal and external spiral fin type temperature control combustion lubricating oil heat exchanger based on compact channel - Google Patents
Internal and external spiral fin type temperature control combustion lubricating oil heat exchanger based on compact channel Download PDFInfo
- Publication number
- CN113513929A CN113513929A CN202110537205.3A CN202110537205A CN113513929A CN 113513929 A CN113513929 A CN 113513929A CN 202110537205 A CN202110537205 A CN 202110537205A CN 113513929 A CN113513929 A CN 113513929A
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- channel
- lubricating oil
- heat exchanger
- fuel
- temperature
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/022—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration
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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
- F28F11/00—Arrangements for sealing leaky tubes and conduits
- F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
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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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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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
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
Abstract
The invention relates to the technical field of aero-engines, and aims to solve the problems that the conventional lubricating oil-fired heat exchanger cannot realize efficient heat exchange of lubricating oil, cannot effectively control the temperature of the lubricating oil and is low in reliability of the lubricating oil-fired heat exchanger under the limited size, and discloses an internal and external spiral fin type temperature-controlled lubricating oil-fired heat exchanger based on a compact channel, which comprises an outer sleeve, wherein the outer sleeve is sequentially provided with a control device, an inner sleeve and an integrally formed fin tube from the center line of the outer sleeve to the inner wall of the outer sleeve, the outer side of the fin tube and the inner wall of the outer sleeve form an external spiral channel, the inner side of the fin tube and the inner sleeve form an internal spiral channel, and the outer sleeve is provided with a fuel channel and a lubricating oil channel which are communicated with the external spiral channel; the finned tube is used for controlling the flow direction, the purpose of efficiently cooling the engine lubricating oil is achieved, the control device is used for controlling the heat exchange capacity, and the engine lubricating oil cooling device has a passive temperature interval control function, so that the working reliability of the engine is improved.
Description
Technical Field
The invention relates to the technical field of aero-engines, in particular to an internal and external spiral fin type temperature control fuel oil heat exchanger based on a compact channel, which is used for solving the problems that the conventional fuel oil heat exchanger cannot realize efficient heat exchange of fuel oil, cannot effectively control the temperature of the fuel oil and is low in reliability under the limited size.
Background
The fuel oil heat exchanger is a main component of an aircraft engine and a main speed reducer lubricating oil cooling system, and the performance and the quality of the fuel oil heat exchanger play an important role in efficient operation of the engine. The temperature difference between the lubricating oil leaving and entering the engine is 35-50 ℃ by the lubricating oil cooling system, and the temperature of the working parts of the engine can be kept within an allowable range. The main function of the fuel oil heat exchanger is to transfer the heat of the high-temperature lubricating oil to the low-temperature fuel oil, so that the high-temperature lubricating oil is cooled. In many aircraft engine oil cooling systems, a fuel oil heat exchanger with welded or shell-and-tube type is basically used and the oil is usually cooled for the entire time, irrespective of the pump load due to the effect of low temperature on the viscosity of the oil. The welded sliding fuel oil heat exchanger is easy to generate fatigue thermal stress cracking and damage, and the shell-and-tube sliding fuel oil heat exchanger has large thermal resistance of gaps, lower efficiency, large weight and difficult replacement and maintenance of parts.
In the case of a lubricant, when the temperature is low, the viscosity of the lubricant is high, the flow resistance is large, the fluidity of the lubricant is poor, and the lubricating property is poor. When the temperature of the lubricant is too high to exceed its maximum allowable temperature, the lubricant may coke and precipitate asphalt. The high-temperature oxidation of the hot lubricating oil can decompose various carbides on parts in contact with the hot lubricating oil, so that the engine is dirty, the heat conductivity is deteriorated, the engine is overheated, the thermal stress of the parts is increased, large deformation is generated, the moving combined parts are tight and blocked, and the engine is difficult to repair and maintain.
Therefore, the problems of the efficient control of the lubricating oil temperature by the fuel-oil heat exchanger, the high efficiency compactness, the high reliability and the like of the fuel-oil heat exchanger need to be effectively solved, and particularly the problems of the aircraft engine with the severely changed working condition, such as over-running, stress application supersonic speed engine and the like, need to be solved.
Disclosure of Invention
The invention aims to: the internal and external spiral fin type temperature control fuel oil heat exchanger based on the compact channel is suitable for a long-life engine system under the limitation of compact size, has a passive temperature interval control function and a full machining manufacturing mode while efficiently cooling high-temperature lubricating oil of an engine, can greatly improve the working reliability, maintainability and quick replaceability of the engine, reduces the number of parts and lightens the whole weight of the engine.
The invention specifically adopts the following technical scheme for realizing the purpose:
the internal and external helical fin type temperature-controlled fuel-lubricating oil heat exchanger comprises an outer sleeve, wherein the outer sleeve is sequentially provided with a control device, an inner sleeve and an integrally formed finned tube from the center line of the outer sleeve to the inner wall of the outer sleeve, the finned tube comprises a tube body and helical fins, three paths of parallel helical fins with equal intervals are distributed on the internal side and the external side of the tube body respectively, the external side of the finned tube and the inner wall of the outer sleeve form an external helical channel, the internal side of the finned tube and the inner sleeve form an internal helical channel, the outer sleeve is provided with a fuel channel and a lubricating oil channel which are communicated with the external helical channel, the inner sleeve is provided with a flow guide channel communicated with the internal helical channel, and the inner sleeve is provided with a controllable channel.
Furthermore, a positioning ring is arranged on the flow guide channel.
Further, the fuel oil channel comprises a fuel oil inlet and a fuel oil outlet which are arranged on the outer wall of the outer sleeve, and the fuel oil inlet and the fuel oil outlet are respectively communicated with the outer spiral channel.
Furthermore, the lubricating oil channel comprises a lubricating oil inlet and a lubricating oil outlet which are arranged in the pipe body, and the lubricating oil inlet and the lubricating oil outlet are respectively communicated with the inner side spiral channel.
Further, the upwardly extending portion of the tube and the inner sleeve form a cavity.
Further, the control device comprises a temperature control valve core arranged in the cavity, a top shaft penetrating through the inner sleeve is arranged at one end, extending downwards, of the temperature control valve core, a spring is arranged on the top shaft, a check ring is arranged on the inner sleeve, and the top shaft penetrates through the check ring.
Furthermore, a return passage communicated with the controllable passage is arranged on the inner sleeve.
Furthermore, a sealing rubber ring for sealing and separating the fuel oil channel and the lubricating oil channel is respectively arranged between the pipe body and the outer sleeve.
The invention has the following beneficial effects:
1. in the invention, the finned tube is respectively used for forming the outer side spiral channel and the inner side spiral channel with the outer sleeve and the inner sleeve, so that the flow direction can be controlled, and meanwhile, the formation of flow turbulence is facilitated, thereby enhancing heat exchange and realizing the purpose of efficiently cooling the engine lubricating oil; the control device is used for controlling the flow of the lubricating oil flowing into the spiral channel from the flow guide channel so as to realize the control of the heat exchange capacity, so that the control device has a passive temperature interval control function, and the working reliability of the engine is greatly improved.
2. In the invention, all parts are machined and formed by the integrated machine, so that the manufacturing process and assembly are simpler, the cost is lower, the reliability and service life are higher, and the maintainability and the replaceability are higher.
3. In the invention, the positioning ring is arranged on the flow guide channel, the positioning ring not only has the flow guide function, but also has the circumferential positioning function, and the hollow positioning ring is placed in the flow guide channel, so that the circumferential positioning of the inner sleeve can be realized, and the positioning pin is not required to be additionally used.
4. In the invention, the fuel inlet and the fuel outlet are respectively communicated with the outer side spiral channel, so that low-temperature fuel can enter from the fuel inlet, and can take away lubricating oil heat transferred by the finned tube through the outer side spiral channel and then flow out from the fuel outlet.
5. In the invention, the lubricating oil inlet and the lubricating oil outlet are respectively communicated with the inner side spiral channel, high-temperature lubricating oil flows into the positioning ring and the flow guide channel through the lubricating oil inlet, then flows into a bottom area formed by the bottoms of the outer sleeve and the inner sleeve, then is divided into three paths, transfers heat to the finned tube through the inner side spiral channel, and finally transfers the heat to the outer side fuel oil, thereby realizing the purpose of efficiently cooling the engine lubricating oil.
6. In the invention, the control device can control the cooling flow of the lubricating oil according to the temperature change of the lubricating oil, thereby being beneficial to reducing the flow resistance at low temperature, enhancing the heat exchange at high temperature and reducing the load of the engine fuel lubricating oil pump.
7. In the invention, three paths of parallel equally spaced spiral fins are respectively distributed on the inner side and the outer side of the integrally formed finned tube to form compact inner side spiral channels and outer side spiral channels, and the inner sleeve and the outer sleeve respectively provide inner and outer sealing surfaces of the inner side spiral channels and the outer side spiral channels, so that the heat exchange function is realized; the compact fins increase the heat exchange area; the inner spiral channel and the outer spiral channel which are parallel reduce the flow resistance, ensure the heat exchange capacity and simultaneously reduce the load of the fuel lubricating oil pump, and the spiral channel enables fluid to generate spiral flow, thereby being beneficial to enhancing the turbulence intensity and enhancing the convective heat transfer coefficient of unit area; the structure and the high heat exchange coefficient when compact effectively reduce the weight of smooth fuel oil heat exchanger.
8. In the invention, the sealing rubber ring is used for sealing and separating the lubricating oil and the fuel oil on the two sides of the sealing finned tube so as to prevent the fuel oil and the lubricating oil from being mixed, and can also be used for sealing the fuel oil and the external environment so as to prevent the fuel oil from leaking.
9. In the invention, the mass of the fuel oil heat exchanger is less than 160g, and the weight of the fuel oil heat exchanger is far lower than that of the fuel oil heat exchanger with the same performance at present.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a diagrammatic sectional view A-A of FIG. 1 with the spring removed;
FIG. 3 is a schematic view of the temperature control valve cartridge of FIG. 2 with the top shaft removed;
FIG. 4 is a schematic cross-sectional view of B-B of FIG. 1;
FIG. 5 is a top view of FIG. 1;
FIG. 6 is a schematic cross-sectional view of C-C of FIG. 5;
FIG. 7 is an enlarged view of a portion D of FIG. 6;
FIG. 8 is a right side view of FIG. 1;
FIG. 9 is a schematic structural view of the inner sleeve;
FIG. 10 is a schematic view of the structure of the finned tube;
FIG. 11 is a schematic view of the construction of the outer sleeve;
reference numerals: the device comprises a pipe body 1, spiral fins 11, spiral channels 12 on the outer side, spiral channels 13 on the inner side, a top shaft 2, a retainer ring 21, a spring 22, a rubber sealing ring 3, an inner sleeve 4, a diversion channel 41, a controllable channel 42, a cavity 43, a cylindrical pin 431, a backflow channel 44, a positioning ring 5, an outer sleeve 6, a lubricating oil inlet 61, a lubricating oil outlet 62, a fuel oil inlet 63, a fuel oil outlet 64 and a temperature control valve core 7.
Detailed Description
For a better understanding of the present invention by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the following examples.
Example 1
Referring to fig. 1 to 11, an internal and external spiral fin type temperature-controlled fuel-oil heat exchanger based on a compact channel comprises an outer sleeve 6, wherein a control device, an inner sleeve 4 and an integrally formed finned tube are sequentially arranged from the center line of the outer sleeve 6 to the inner wall of the outer sleeve 6, the finned tube comprises a tube body 1 and the finned fins 11, three paths of spiral fins 11 which are connected in parallel and are equidistant are respectively distributed on the internal side and the external side of the tube body 1, an external spiral channel 12 is formed between the external side of the finned tube and the inner wall of the outer sleeve 6, an internal spiral channel 13 is formed between the internal side of the finned tube and the inner sleeve 4, a fuel channel and a lubricating oil channel which are communicated with the external spiral channel 12 are arranged on the outer sleeve 6, a flow guide channel 41 communicated with the internal spiral channel 13 is arranged in the inner sleeve 4, and a controllable channel 42 is arranged on the inner sleeve 4.
Furthermore, a positioning ring 5 is arranged on the diversion channel 41.
Further, the fuel passage includes a fuel inlet 63 and a fuel outlet 64 provided on the outer wall of the outer sleeve 6, and the fuel inlet 63 and the fuel outlet 64 are respectively communicated with the outer spiral passage 12.
Further, the oil passage includes an oil inlet 61 and an oil outlet 62 provided in the pipe body 1, and the oil inlet 61 and the oil outlet 62 are respectively communicated with the inner spiral passage 13.
Further, the upwardly extending portion of the tubular body 1 forms a cavity 43 with the inner sleeve 4.
Further, the control device comprises a temperature control valve core 7 arranged in the cavity 43, one end of the temperature control valve core 7 extending downwards is provided with a top shaft 2 penetrating through the inner sleeve 4, the top shaft 2 is provided with a spring 22, the inner sleeve 4 is provided with a retainer ring 21, and the top shaft 2 penetrates through the retainer ring 21.
Further, a return channel 44 is provided in the inner sleeve 4, which communicates with the controllable channel 42.
Further, a sealing rubber ring 3 for sealing and separating a fuel oil channel and a lubricating oil channel is respectively arranged between the pipe body 1 and the outer sleeve 6.
According to the engine lubricating oil cooling device, fuel oil and lubricating oil generate spiral flow through the finned tubes, and the fins on the finned tubes are spiral, so that the turbulence intensity is enhanced, the purpose of efficiently cooling the engine lubricating oil is achieved, the control device can achieve control over heat exchange capacity, a passive temperature interval control function is achieved, and the working reliability of the engine is greatly improved; the high-temperature lubricating oil flows into the positioning ring 5 through the lubricating oil inlet 61, flows through the flow guide channel 41 in the inner sleeve 4, flows into the bottom area formed by the outer sleeve 6 and the bottom of the inner sleeve 4 after passing through the flow guide channel 41, is divided into three paths, transfers heat to the finned tubes through the inner side spiral channel 13, transfers heat inside the finned tubes to the low-temperature side through a heat conduction mode from the high-temperature inner side, flows out of the inner side spiral channel 13, is collected into the cavity 43 at the top, finally flows out through the lubricating oil outlet 62, flows in from the fuel oil inlet 63, then flows through the outer side spiral channel 12, takes away lubricating oil heat transferred from the finned tubes, and finally flows out through the fuel oil outlet 64, so that the process of transferring the high-temperature lubricating oil heat to the low-temperature fuel oil is realized; the finned tubes are respectively connected with the outer spiral channel 12 and the inner spiral channel 13 formed by the outer sleeve 6 and the inner sleeve 4, so that the flowing direction of lubricating oil and fuel can be controlled, the turbulence intensity is increased, the finned tubes are integrally formed, three paths of parallel equidistant spiral fins 11 are respectively distributed on the inner side and the outer side of each finned tube, the heat exchange area is increased by the compact fins, and the purpose of efficiently cooling the high-temperature lubricating oil of the engine is achieved.
Specifically, the cavity 43 is connected with a temperature control valve core in a positioning manner through a cylindrical pin 431, and is used for sensing the temperature of lubricating oil, adjusting the length of a push rod of the valve core, and pushing the top shaft 2 to move so as to control the size of a flow gap of the controllable channel 42; when the lubricating oil just enters the lubricating oil inlet 61, the thrust of the valve core of the temperature control valve to the top shaft 2 is small, the controllable channel 42 between the guide channel 41 and the top shaft 2 is opened, the lubricating oil bypasses the top shaft 2 through the controllable channel 42 and directly flows into the cavity 43 from the return channel 44, and the valve core of the temperature control valve inside the cavity 43 senses the temperature of the lubricating oil at the moment, so that the size of the controllable channel 42 between the top shaft 2 and the guide channel 41 is controlled according to the interaction between the temperature regulation and the top shaft 2, and the flow of the lubricating oil exchanging heat with the fuel oil is controlled and flows out through the lubricating oil outlet 62; when the lubricating oil is at a low temperature, the push rod of the valve core of the temperature control valve is shortened, the top shaft 2 moves upwards under the rebounding action force of the spring 22, the circulation gap of the controllable channel 42 is enlarged, the flow of the lubricating oil passing through the controllable channel 42 is increased, and the lubricating oil flows out through the controllable channel 42, the cavity 43 and the lubricating oil outlet 62, and the low-temperature lubricating oil does not pass through the inner spiral channel 13, so that the heat exchange with the finned tube is basically avoided, the lubricating oil is higher in viscosity and not cooled by fuel oil, the temperature of the lubricating oil is basically unchanged, the lubricating oil directly flows out, the overall dew pressure drop is favorably reduced, and the load of the lubricating oil pump is reduced; when the temperature of the lubricating oil rises, the temperature control valve core in the cavity 43 can sense the high temperature of the lubricating oil in the cavity 43, the action between the temperature control valve core and the top shaft 2 is enhanced, the controllable channel 42 between the flow guide channel 41 and the top shaft 2 is gradually closed, at the moment, a part of the lubricating oil directly flows into the cavity 43 through the controllable channel 42 without heat exchange, and the other part of the lubricating oil passes through the flow guide channel 41, then passes through the inner side spiral channel 13 for heat exchange, then flows to the cavity 43, is mixed with the former part of the lubricating oil without heat exchange, flows through the cavity 43, and finally flows out through the lubricating oil outlet 62.
When the temperature rises to a designed preset value, the channel between the flow guide channel 41 and the top shaft 2 is completely closed, at the moment, all the lubricating oil passes through the flow guide channel 41, is collected into the bottom area formed by the bottoms of the outer sleeve 6 and the inner sleeve 4, then is divided into three paths to flow into the compact and efficient inner spiral channel 13 in parallel, and exchanges heat with the fuel oil in the outer spiral channel through the compact inner fins on the finned tubes, at the moment, the lubricating oil can be rapidly cooled, the temperature is effectively controlled, and therefore the lubricating oil works in a safe temperature range. After passing through the inner spiral channel 13, the oil reaches the cavity 43 and then flows out through the oil outlet 62.
Specifically, the temperature control valve element 7 is fixed by the elastic force of the spring 22.
Specifically, three paths of parallel equidistant spiral fins 11 are distributed on the inner side and the outer side of the finned tube respectively, the flow of fuel oil and lubricating oil is controlled in a mode that inner spiral channels and outer spiral channels are arranged in parallel, a temperature control valve core is used as a temperature sensing type active pushing component to control the movement of the top shaft 2, so that the flow and the heat exchange flow of the lubricating oil are controlled, the lubricating oil cooling, lubricating oil temperature control and flowing pressure drop reduction functions are simultaneously realized in the lubricating oil burning heat exchanger, and the requirements of low weight, long service life, variable working condition, easy maintenance, easy replacement and the like of the long-life mini-type engine are met.
Specifically, the inner sleeve 4 and the finned tube are positioned by the positioning ring 5, so that the inner sleeve 4 does not rotate in the finned tube to realize circumferential positioning. The positioning ring 5 is simultaneously connected with the guide channel 41 of the inner sleeve 4 and the channel of the finned tube lubricating oil inlet 61, so that the guide of the lubricating oil is realized.
Specifically, the valve core of the temperature control valve adjusts the length of the valve core push rod through the temperature of the lubricating oil to push the top shaft 2 to move, and the proportion of the lubricating oil introduced into the inner side spiral channel 13 is controlled, so that the heat exchange quantity between the lubricating oil and the fuel oil is controlled, and the effect of controlling the constant temperature of the lubricating oil is achieved.
In particular, thermostatic valve cartridge 7 is optionally, but not limited to, 82 ℃ -RIFH 0.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides an inside and outside spiral fin formula temperature control fires lubricating oil heat exchanger based on compact passageway, includes outer sleeve (6), its characterized in that: the utility model discloses a multi-channel spiral air conditioner, including outer sleeve (6), fin pipe, finned tube, air conditioner, air.
2. The compact channel-based internal and external spiral fin type temperature-controlled fuel-oil heat exchanger is characterized in that a positioning ring (5) is arranged on the flow guide channel (41).
3. The compact channel-based inside and outside spiral fin type temperature-controlled fuel-oil heat exchanger according to claim 1, characterized in that the fuel channel comprises a fuel inlet (63) and a fuel outlet (64) which are arranged on the outer wall of the outer sleeve (6), and the fuel inlet (63) and the fuel outlet (64) are respectively communicated with the outside spiral channel (12).
4. The internal and external spiral fin type temperature-controlled fuel-oil heat exchanger based on the compact channel is characterized in that the lubricating oil channel comprises a lubricating oil inlet (61) and a lubricating oil outlet (62) which are arranged in the pipe body (1), and the lubricating oil inlet (61) and the lubricating oil outlet (62) are respectively communicated with the internal spiral channel (13).
5. The compact channel-based inside and outside spiral fin type temperature-controlled fuel-oil heat exchanger according to claim 1, characterized in that the upward extending part of the pipe body (1) and the inner sleeve (4) form a cavity (43).
6. The internal and external spiral fin type temperature-controlled fuel-oil heat exchanger based on the compact channel is characterized in that the control device comprises a temperature-controlled valve core (7) arranged in a cavity (43), one end of the temperature-controlled valve core (7) extending downwards is provided with a top shaft (2) penetrating through an inner sleeve (4), a spring (22) is arranged on the top shaft (2), a retainer ring (21) is arranged on the inner sleeve (4), and the top shaft (2) penetrates through the retainer ring (21).
7. The compact channel-based inside and outside spiral fin type temperature-controlled fuel-oil heat exchanger according to claim 1, characterized in that the inner sleeve (4) is provided with a return channel (44) communicated with the controllable channel (42).
8. The compact channel-based internal and external spiral fin type temperature-controlled fuel-oil heat exchanger is characterized in that sealing rubber rings (3) for sealing and separating a fuel channel and a lubricating oil channel are respectively arranged between the pipe body (1) and the outer sleeve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110537205.3A CN113513929A (en) | 2021-05-17 | 2021-05-17 | Internal and external spiral fin type temperature control combustion lubricating oil heat exchanger based on compact channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110537205.3A CN113513929A (en) | 2021-05-17 | 2021-05-17 | Internal and external spiral fin type temperature control combustion lubricating oil heat exchanger based on compact channel |
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| Publication Number | Publication Date |
|---|---|
| CN113513929A true CN113513929A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110537205.3A Pending CN113513929A (en) | 2021-05-17 | 2021-05-17 | Internal and external spiral fin type temperature control combustion lubricating oil heat exchanger based on compact channel |
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| CN (1) | CN113513929A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6273088A (en) * | 1985-09-14 | 1987-04-03 | ノルスク・ヒドロ・アクシエセルスカ−プ | Cooler |
| US4669532A (en) * | 1984-04-23 | 1987-06-02 | Kabushiki Kaisha Tsuchiya Seisakusho | Heat exchanger with temperature responsive bypass |
| JPS63259387A (en) * | 1987-04-14 | 1988-10-26 | Akutoronikusu Kk | Heat exchanging section of double-wall structured heat exchanger |
| JPH0343653A (en) * | 1989-07-08 | 1991-02-25 | Nippondenso Co Ltd | Fuel cooling device |
| CN101270690A (en) * | 2008-04-02 | 2008-09-24 | 北京航空航天大学 | Fuel oil and lubricating oil heat exchanger of light aircraft engine |
| JP2009204166A (en) * | 2008-02-26 | 2009-09-10 | Showa Denko Kk | Double pipe heat exchanger |
| CN104196589A (en) * | 2014-08-29 | 2014-12-10 | 哈尔滨东安发动机（集团）有限公司 | Fuel and slide oil radiator structure |
| CN111535927A (en) * | 2020-05-09 | 2020-08-14 | 贵州永红航空机械有限责任公司 | Lubricating oil filtering double-valve type lubricating oil burning radiator |
-
2021
- 2021-05-17 CN CN202110537205.3A patent/CN113513929A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4669532A (en) * | 1984-04-23 | 1987-06-02 | Kabushiki Kaisha Tsuchiya Seisakusho | Heat exchanger with temperature responsive bypass |
| JPS6273088A (en) * | 1985-09-14 | 1987-04-03 | ノルスク・ヒドロ・アクシエセルスカ−プ | Cooler |
| JPS63259387A (en) * | 1987-04-14 | 1988-10-26 | Akutoronikusu Kk | Heat exchanging section of double-wall structured heat exchanger |
| JPH0343653A (en) * | 1989-07-08 | 1991-02-25 | Nippondenso Co Ltd | Fuel cooling device |
| JP2009204166A (en) * | 2008-02-26 | 2009-09-10 | Showa Denko Kk | Double pipe heat exchanger |
| CN101270690A (en) * | 2008-04-02 | 2008-09-24 | 北京航空航天大学 | Fuel oil and lubricating oil heat exchanger of light aircraft engine |
| CN104196589A (en) * | 2014-08-29 | 2014-12-10 | 哈尔滨东安发动机（集团）有限公司 | Fuel and slide oil radiator structure |
| CN111535927A (en) * | 2020-05-09 | 2020-08-14 | 贵州永红航空机械有限责任公司 | Lubricating oil filtering double-valve type lubricating oil burning radiator |
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