Bearing shell for self-heat-dissipation type vehicle turbocharger

Abstract

The invention provides a bearing shell for a self-heat-dissipation type vehicle turbocharger, and relates to the technical field of main shells, the bearing shell comprises a main shell and a cooling diversion tank; the main shell is installed in the turbocharger, the full-floating bearing is located in the main shell, and the outer portion of the main shell is connected with a liquid discharging pipe and a liquid inlet pipe. The cooling flow guide tank is fixed to the outer portion of the turbocharger, a heat dissipation pipe is installed in the cooling flow guide tank, and one end of the heat dissipation pipe is communicated with the liquid drainage pipe. According to the cooling device for the full-floating bearing, the full-floating bearing located in the main shell is cooled through low-temperature cooling liquid circulating in the cooling pipeline, the cooling liquid discharged out of the cooling pipeline flows into the heat dissipation pipe, the heat dissipation pipe releases heat carried by the cooling liquid into air circulating in the cooling flow guide tank, and the cooling effect of the full-floating bearing is guaranteed. The main shell for the turbocharger solves the problems that an existing main shell for the turbocharger generally adopts an air cooling mode for heat dissipation, and due to the fact that the heat dissipation size of the main shell is small, heat is difficult to release in time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of main shell, in particular to a self-heat-dissipation bearing shell for vehicle turbocharger. BACKGROUND

[0002] The turbocharger is a device that uses the exhaust gas from the engine to drive a turbine, which in turn drives a compressor. The compressor pressurizes the air that is drawn into the engine, allowing more air to enter the engine than would be possible without the turbocharger. This increased air flow allows the engine to produce more power. The main shell is an important component of the turbocharger and is used in conjunction with the floating bearing to ensure that the turbocharger operates properly at high temperatures.

[0003] For example, Chinese patent "CN105723069B Turbocharger for Engine", the turbocharger has: an impeller that pressurizes air drawn into the engine; a turbocharger rotating shaft that has the impeller fixed thereto; and a turbocharger housing that rotatably supports the turbocharger rotating shaft; a turbocharger lubricating liquid passage that guides lubricating liquid to the bearing housing is formed inside the turbocharger housing, and an oil filter that removes foreign matter from the lubricating liquid is provided in the turbocharger lubricating liquid passage; the oil filter is detachably attached to the turbocharger housing by operation from outside the turbocharger.

[0004] The existing bearing shell for turbocharger generally uses air cooling to dissipate heat during use. Due to the small volume of the bearing shell itself, the traditional air cooling has poor cooling effect, and it is difficult to release heat in time, which can easily cause heat accumulation in the floating bearing, causing the oil inside the floating bearing to overheat and affecting the normal operation of the turbocharger. SUMMARY

[0005] The present application relates to a self-heat-dissipation bearing shell for vehicle turbocharger, which solves the problem of the existing bearing shell for turbocharger, which generally uses air cooling to dissipate heat during use. Due to the small volume of the bearing shell itself, the traditional air cooling has poor cooling effect, and it is difficult to release heat in time, which can easily cause heat accumulation in the floating bearing, causing the oil inside the floating bearing to overheat and affecting the normal operation of the turbocharger.

[0006] The first aspect of the present disclosure provides a self-heat-dissipation bearing housing for a vehicle turbocharger, which specifically comprises a main housing and a cooling guide tank; the main housing is installed inside the turbocharger, a full-floating bearing is located inside the main housing, and a liquid discharge pipe and a liquid inlet pipe are connected to the outside of the main housing; the cooling guide tank is fixed outside the turbocharger, a heat dissipation pipe is installed inside the cooling guide tank, one end of the heat dissipation pipe is connected to the liquid discharge pipe, and a guide pipe is connected to the other end of the heat dissipation pipe; the guide pipe is connected to a circulating pump at the end, the circulating pump is connected to the liquid inlet pipe; a pressure relief cylinder is connected to the middle part of the heat dissipation pipe, and the pressure relief cylinder is located outside the cooling guide tank; a hollow cover plate is fixedly connected to the outside of the pressure relief cylinder, a pressure stabilizing piston is connected to the inside of the pressure relief cylinder, and the pressure stabilizing piston is connected to the hollow cover plate.

[0007] Further, the main housing is provided with a cooling pipeline in a surrounding manner, the cooling pipeline is curved, the full-floating bearing located in the main housing is cooled by the low-temperature cooling liquid flowing through the cooling pipeline, and high-efficiency heat dissipation effect of the full-floating bearing is achieved.

[0008] Further, the liquid outlet end of the cooling pipeline is connected to the liquid inlet end of the heat dissipation pipe through the liquid discharge pipe, and the heat dissipation pipe is curved.

[0009] Further, the liquid outlet end of the heat dissipation pipe is connected to the liquid inlet end of the circulating pump through the guide pipe, and the liquid outlet end of the circulating pump is connected to the liquid inlet end of the cooling pipeline through the liquid inlet pipe.

[0010] Further, the cooling pipeline, the liquid discharge pipe, the heat dissipation pipe, the guide pipe, the circulating pump and the liquid inlet pipe constitute a complete circulating cooling pipeline, the cooling liquid flows in the circulating cooling pipeline, the cooling liquid discharged from the cooling pipeline flows into the heat dissipation pipe, air flows in the cooling guide tank, the heat carried by the cooling liquid is released to the air flowing in the cooling guide tank through the heat dissipation pipe, and the cooled cooling liquid in the heat dissipation pipe is transported to the cooling pipeline by the circulating pump.

[0011] Further, the pressure relief pipe is provided at the middle part of the heat dissipation pipe, the pressure relief cylinder is connected to the pressure relief pipe, the pressure stabilizing piston is slidingly connected in the pressure relief cylinder, a rubber sealing ring is installed on the outside of the pressure stabilizing piston, the rubber sealing ring is in sliding contact with the inner side of the pressure relief cylinder, a movable rod is arranged on the outside of the pressure stabilizing piston, and the movable rod slidingly penetrates the hollow cover plate; when the temperature of the cooling liquid in the circulating cooling pipeline increases, the volume of the cooling liquid expands, the cooling liquid pushes the pressure stabilizing piston to move outward, and part of the cooling liquid flows into the pressure relief cylinder; when the temperature of the cooling liquid in the circulating cooling pipeline decreases, the volume of the cooling liquid decreases, the cooling liquid drives the pressure stabilizing piston to move inward, and the cooling liquid in the pressure relief cylinder flows back to the circulating cooling pipeline.

[0012] Further, the cooling guide tank is externally provided with an air inlet and an air outlet, the air inlet is communicated with the air outlet of the turbocharger through a branch pipeline, and the air outlet is communicated with the air inlet pipeline of the engine.

[0013] Further, the cooling guide tank is externally provided with an air inlet and an air outlet, the air inlet is communicated with the air outlet of the turbocharger through a branch pipeline, and the air outlet is communicated with the air inlet pipeline of the engine.

[0014] Further, the cooling guide tank is externally provided with an air inlet and an air outlet, the air inlet is communicated with the air outlet of the turbocharger through a branch pipeline, and the air outlet is communicated with the air inlet pipeline of the engine.

[0015] The application provides a self-cooling bearing housing for a turbocharger of a vehicle, and has the following advantages: In use, the low-temperature cooling liquid flowing in the cooling pipeline cools and lowers the temperature of the full-floating bearing in the main housing, achieving high-efficiency heat dissipation of the full-floating bearing, effectively preventing overheating of the oil in the full-floating bearing, and ensuring the operation of the turbocharger; the cooling liquid discharged from the cooling pipeline flows into the heat dissipation pipeline, air flows in the cooling guide tank, and the heat carried by the cooling liquid is released to the air flowing in the cooling guide tank through the heat dissipation pipeline, and the cooled cooling liquid in the heat dissipation pipeline is delivered to the cooling pipeline by the circulating pump, ensuring the cooling effect of the full-floating bearing in the main housing.

[0016] In addition, when the temperature of the cooling liquid in the circulating cooling pipeline rises, the volume of the cooling liquid expands, the cooling liquid pushes the pressure stabilizing piston to move outward, and part of the cooling liquid flows into the pressure relief cylinder; when the temperature of the cooling liquid in the circulating cooling pipeline decreases, the volume of the cooling liquid decreases, and the cooling liquid drives the pressure stabilizing piston to move inward, and the cooling liquid in the pressure relief cylinder flows back to the circulating cooling pipeline, ensuring the constancy of the pressure in the circulating cooling pipeline, thereby ensuring the normal operation of the circulating cooling pipeline.

[0017] In addition, the turbocharger automatically delivers air to the cooling guide tank during operation, the heated air in the cooling guide tank enters the air intake pipeline of the engine, plays a preheating effect on the engine air intake, improves the engine air intake temperature, facilitates the evaporation and atomization of gasoline, is conducive to the mixing of gasoline and air, and guides the air entering the cooling guide tank through the guide plate, so that the air flows in a spiral shape, prolongs the air circulation path in the cooling guide tank, and ensures the heat absorption effect; when the air circulating in the cooling guide tank passes through the through hole, the cross section of the through hole is reduced, the air is compressed and the flow rate is increased, after the air passes through the through hole, the compressed air expands, and in the process, the air is cooled, the cooling liquid circulating in the heat dissipation pipe is cooled by the low temperature air, and the cooling effect of the full-floating bearing in the main shell is further ensured.

[0018] Other advantages, objects, and features of the application will be understood by those skilled in the art from the following description, and will be understood by those skilled in the art from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments will be briefly introduced below.

[0020] The drawings in the following description only relate to some embodiments of the application, and are not limiting to the application.

[0021] In the drawings: Figure 1 The overall shaft side structure schematic diagram of the self-heat-dissipation bearing shell for the turbocharger of the vehicle of the application is shown; Figure 2 The main shell shaft side structure schematic diagram of the self-heat-dissipation bearing shell for the turbocharger of the vehicle of the application is shown; Figure 3 The main shell cross-sectional structure schematic diagram of the self-heat-dissipation bearing shell for the turbocharger of the vehicle of the application is shown; Figure 4 The connection structure schematic diagram of the heat dissipation pipe, the pressure relief cylinder and the cooling guide tank of the self-heat-dissipation bearing shell for the turbocharger of the vehicle of the application is shown; Figure 5 The internal cross-sectional structure schematic diagram of the cooling guide tank of the self-heat-dissipation bearing shell for the turbocharger of the vehicle of the application is shown; Figure 6 The heat dissipation pipe shaft side structure schematic diagram of the self-heat-dissipation bearing shell for the turbocharger of the vehicle of the application is shown; Figure 7 The connection structure schematic diagram of the pressure relief cylinder and the hollow cover plate of the self-heat-dissipation bearing shell for the turbocharger of the vehicle of the application is shown; Figure 8A cross-sectional view of the internal structure of the pressure relief cylinder of the bearing housing for a self-cooling vehicle turbocharger of this application is shown.

[0022] List of reference numerals 1. Main shell; 101. Cooling pipe; 2. Drain pipe; 3. Heat dissipation pipe; 301. Pressure relief port; 302. Guide plate; 4. Guide pipe; 5. Circulation pump; 6. Liquid inlet pipe; 7. Pressure relief cylinder; 8. Hollow cover plate; 9. Pressure stabilizing piston; 901. Movable rod; 10. Cooling guide tank; 1001. Air inlet; 1002. Exhaust port; 1003. Baffle; 10031. Through hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figures 1 to 8 : This invention proposes a self-cooling bearing housing for a vehicle turbocharger, comprising: a main housing 1 and a cooling guide tank 10; the main housing 1 is installed inside the turbocharger, a fully floating bearing is located inside the main housing 1, and a drain pipe 2 and an inlet pipe 6 are connected to the outside of the main housing 1; the cooling guide tank 10 is fixed to the outside of the turbocharger, and a heat dissipation pipe 3 is installed inside the cooling guide tank 10, one end of the heat dissipation pipe 3 is connected to the drain pipe 2, and the other end of the heat dissipation pipe 3 is connected to a guide pipe 4; a circulation tube is connected to the end of the guide pipe 4. Pump 5, the circulating pump 5 is connected to the inlet pipe 6; a pressure relief cylinder 7 is connected to the middle part of the heat dissipation pipe 3, and the pressure relief cylinder 7 is located outside the cooling guide tank 10; a hollow cover plate 8 is fixedly connected to the outside of the pressure relief cylinder 7, and a pressure stabilizing piston 9 is connected inside the pressure relief cylinder 7, and the pressure stabilizing piston 9 is connected to the hollow cover plate 8; a cooling pipe 101 is arranged in a circular shape inside the main shell 1, and the cooling pipe 101 is curved; the low temperature coolant flowing in the cooling pipe 101 cools the fully floating bearing located inside the main shell 1. The system achieves efficient heat dissipation for the fully floating bearing, effectively preventing overheating of the internal oil and ensuring optimal turbocharger operation. The outlet of cooling pipe 101 is connected to the inlet of heat dissipation pipe 3 via drain pipe 2, with heat dissipation pipe 3 being curved. The outlet of heat dissipation pipe 3 is connected to the inlet of circulation pump 5 via guide pipe 4, and the outlet of circulation pump 5 is connected to the inlet of cooling pipe 101 via inlet pipe 6. Cooling pipe 101, drain pipe 2, and heat dissipation pipe... Pipe 3, guide pipe 4, circulation pump 5 and liquid inlet pipe 6 constitute a complete circulating cooling pipeline. Coolant flows in the circulating cooling pipeline. The coolant discharged from the cooling pipeline 101 flows into the heat dissipation pipe 3. Air flows in the cooling guide tank 10. The heat carried by the coolant is released into the air flowing in the cooling guide tank 10 through the heat dissipation pipe 3. The coolant cooled in the heat dissipation pipe 3 is transported to the cooling pipeline 101 by the circulation pump 5 to ensure the cooling effect of the fully floating bearing inside the main shell 1.

[0025] In this embodiment, a pressure relief port 301 is provided in the middle of the heat dissipation pipe 3. The pressure relief cylinder 7 is connected to the pressure relief port 301. The pressure stabilizing piston 9 is slidably connected inside the pressure relief cylinder 7. A rubber sealing ring is installed on the outside of the pressure stabilizing piston 9. The rubber sealing ring slides in contact with the inside of the pressure relief cylinder 7. A movable rod 901 is provided on the outside of the pressure stabilizing piston 9. The movable rod 901 slides through the hollow cover plate 8. With the above technical solution, when the temperature of the coolant in the circulating cooling pipe rises, the volume of the coolant expands. The coolant pushes the pressure stabilizing piston 9 to move outward, so that some coolant flows into the pressure relief cylinder 7. When the temperature of the coolant in the circulating cooling pipe decreases, the volume of the coolant shrinks. The coolant drives the pressure stabilizing piston 9 to move inward, and the coolant in the pressure relief cylinder 7 flows back into the circulating cooling pipe, ensuring the constant pressure in the circulating cooling pipe, thereby ensuring the normal operation of the circulating cooling pipe.

[0026] In this embodiment, the cooling guide tank 10 is externally provided with an air inlet 1001 and an exhaust outlet 1002. The air inlet 1001 is connected to the air outlet of the turbocharger via a branch pipe, and the exhaust outlet 1002 is connected to the engine's intake pipe. A guide plate 302 is externally provided on the cooling pipe 3. The guide plate 302 is spiral-shaped, and its edge contacts the inner wall of the cooling guide tank 10. The guide plate 302 is located in the middle of the air inlet 1001 and the exhaust outlet 1002. According to the above technical solution, when the turbocharger is running, it automatically delivers air to the cooling guide tank 10. The air heated in the cooling guide tank 10 enters the engine's intake pipe, which has the effect of preheating the engine intake air, increasing the engine intake air temperature, facilitating the evaporation and atomization of gasoline, and promoting the mixing of gasoline and air. The air entering the cooling guide tank 10 is guided by the guide plate 302, so that the air flows in a spiral shape, extending the air flow path in the cooling guide tank 10 and ensuring the heat absorption effect.

[0027] In Example 2, based on Example 1, a baffle 1003 is provided inside the cooling guide tank 10. The baffle 1003 is close to the air inlet 1001, and a through hole 10031 is arranged in a circular shape inside the baffle 1003. The through hole 10031 is funnel-shaped, and the end with the smaller diameter of the through hole 10031 faces the heat dissipation pipe 3. With the above technical solution, when the air flowing inside the cooling guide tank 10 passes through the through hole 10031, the cross-section of the through hole 10031 is reduced, the air is compressed and the flow rate increases. After the air passes through the through hole 10031, the compressed air expands, and the air is cooled in the process. The low temperature air cools the coolant flowing inside the heat dissipation pipe 3, further ensuring the cooling effect of the fully floating bearing inside the main shell 1.

[0028] The working principle of this embodiment is as follows: The circulating pump 5 starts, and the low-temperature coolant flows through the cooling pipe 101 inside the main housing 1. This coolant cools the fully floating bearing located inside the main housing 1, achieving efficient heat dissipation and effectively preventing overheating of the oil inside the fully floating bearing. The coolant discharged from the cooling pipe 101 flows into the heat dissipation pipe 3, while air flows through the cooling guide tank 10. The heat carried by the coolant is released into the air flowing inside the cooling guide tank 10 through the heat dissipation pipe 3. The cooled coolant inside the heat dissipation pipe 3 is then transported to the cooling pipe 101 by the circulating pump 5. When the temperature of the coolant in the circulating cooling pipe rises, the coolant volume expands, pushing the pressure stabilizing piston 9 outwards, causing some coolant to flow into the pressure relief cylinder 7. When the temperature of the coolant in the circulating cooling pipe decreases, the coolant volume shrinks, and the coolant drives the pressure stabilizing piston. Piston 9 moves inward, and the coolant in the pressure relief cylinder 7 flows back into the circulating cooling pipe, ensuring the constant pressure in the circulating cooling pipe. When the turbocharger is running, it automatically delivers air to the cooling guide tank 10. The air heated in the cooling guide tank 10 enters the engine's intake pipe, which preheats the engine intake air, increases the engine intake air temperature, facilitates the evaporation and atomization of gasoline, and promotes the mixing of gasoline and air. The air entering the cooling guide tank 10 is guided by the guide plate 302, making the air flow in a spiral shape and extending the air flow path in the cooling guide tank 10. When the air flowing inside the cooling guide tank 10 passes through the through hole 10031, the cross-section of the through hole 10031 is reduced, the air is compressed and the flow rate increases. After the air passes through the through hole 10031, the compressed air expands, and the air is cooled in the process. The low temperature air cools the coolant flowing inside the heat sink 3.

[0029] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0030] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0031] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A bearing housing for a self-cooling vehicle turbocharger, comprising: The main housing (1) and the cooling guide tank (10) are characterized in that the main housing (1) is installed inside the turbocharger, the fully floating bearing is located inside the main housing (1), and the main housing (1) is connected to the outside of the drain pipe (2) and the inlet pipe (6); the cooling guide tank (10) is fixed outside the turbocharger, and the cooling guide tank (10) is equipped with a heat dissipation pipe (3), one end of the heat dissipation pipe (3) is connected to the drain pipe (2), and the other end of the heat dissipation pipe (3) is connected to the guide pipe (4); the end of the guide pipe (4) is connected to a circulation pump (5), and the circulation pump (5) is connected to the inlet pipe (6); the middle part of the heat dissipation pipe (3) is connected to a pressure relief cylinder (7), and the pressure relief cylinder (7) is located outside the cooling guide tank (10); a hollow cover plate (8) is fixedly connected to the outside of the pressure relief cylinder (7), and a pressure stabilizing piston (9) is connected inside the pressure relief cylinder (7), and the pressure stabilizing piston (9) is connected to the hollow cover plate (8).

2. The bearing housing for a self-cooling vehicle turbocharger according to claim 1, characterized in that, The main housing (1) is provided with a cooling pipe (101) arranged in a circular shape inside, and the cooling pipe (101) is curved.

3. The bearing housing for a self-cooling vehicle turbocharger according to claim 2, characterized in that, The outlet end of the cooling pipe (101) is connected to the inlet end of the heat dissipation pipe (3) through the drain pipe (2), and the heat dissipation pipe (3) is curved.

4. The bearing housing for a self-cooling vehicle turbocharger according to claim 2, characterized in that, The outlet end of the heat dissipation pipe (3) is connected to the inlet end of the circulation pump (5) through the guide pipe (4), and the outlet end of the circulation pump (5) is connected to the inlet end of the cooling pipeline (101) through the inlet pipe (6).

5. The bearing housing for a self-cooling vehicle turbocharger according to claim 2, characterized in that, The cooling pipe (101), drain pipe (2), heat dissipation pipe (3), guide pipe (4), circulation pump (5) and inlet pipe (6) constitute a complete circulating cooling pipe, and coolant flows through the circulating cooling pipe.

6. The bearing housing for a self-cooling vehicle turbocharger according to claim 1, characterized in that, The heat dissipation pipe (3) has a pressure relief port (301) in the middle part. The pressure relief cylinder (7) is connected to the pressure relief port (301). The pressure stabilizing piston (9) is slidably connected inside the pressure relief cylinder (7). A rubber sealing ring is installed on the outside of the pressure stabilizing piston (9). The rubber sealing ring slides in contact with the inside of the pressure relief cylinder (7). A movable rod (901) is provided on the outside of the pressure stabilizing piston (9). The movable rod (901) slides through the hollow cover plate (8).

7. The bearing housing for a self-cooling vehicle turbocharger according to claim 1, characterized in that, The cooling guide tank (10) is provided with an air inlet (1001) and an exhaust port (1002) on the outside. The air inlet (1001) is connected to the air outlet of the turbocharger through a branch pipe, and the exhaust port (1002) is connected to the air intake pipe of the engine.

8. The bearing housing for a self-cooling vehicle turbocharger according to claim 1, characterized in that, The heat dissipation pipe (3) is provided with a guide plate (302) on the outside. The guide plate (302) is spiral in shape. The edge of the guide plate (302) is in contact with the inner wall of the cooling guide tank (10). The guide plate (302) is located in the middle part between the air inlet (1001) and the exhaust port (1002).

9. The bearing housing for a self-cooling vehicle turbocharger according to claim 7, characterized in that, The cooling guide tank (10) is equipped with a baffle (1003) inside. The baffle (1003) is close to the air inlet (1001). The baffle (1003) is provided with a through hole (10031) in a ring shape inside. The through hole (10031) is funnel-shaped, and the end of the through hole (10031) with a smaller diameter faces the heat dissipation pipe (3).

Images