Heat dissipation and ventilation structure for motor home engine

Abstract

The invention relates to the technical field of limousines, and particularly discloses a heat dissipation and ventilation structure for a limousine engine, comprising: an engine body mounted in a limousine head; the protective cover frame is installed in a motor home head, a through hole is formed in one side of the protective cover frame, and a fan blocking cover is installed on one side of the through hole; the air duct is installed at the bottom of the motor home head, air inlets which are annularly distributed at equal intervals are formed in one side of the air duct, and a dustproof assembly is installed on one side of the air duct; the exhaust assembly is installed at the bottom of the shield frame and extends out of the bottom of the motor home head. According to the motor home engine, low-temperature external airflow is mixed with airflow blown by the engine cooling fan, the engine radiator is fully cooled, the heat dissipation performance of the motor home engine is improved, the airflow blown into the shield frame by the engine cooling fan can be discharged out of the motor home, an air circulation channel is achieved, and the heat dissipation speed of the motor home engine is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of recreational vehicles, and in particular to a heat dissipation and ventilation structure for a recreational vehicle engine. Background Art

[0002] RV, also known as "home on wheels", has both "house" and "car" functions, but its attribute is still a car. It is a movable type of vehicle with basic facilities necessary for home. It can be divided into driving area, living area, bedroom area, sanitary area, kitchen area, etc. RV is a fashionable product that integrates "clothing, food, housing and transportation" and realizes "traveling in life and living in travel". In recent years, RVs have gradually become a popular product for family travel. The engine in the RV is installed in a nearly closed space, which causes the engine's external heat dissipation capacity to decrease, causing the engine's heat load to increase, making the engine poorly ventilated and working abnormally.

[0003] After searching, the publication number CN220298291U is a heat dissipation and ventilation structure for RV engines, which includes heat dissipation shutters and ventilation pipes. The heat dissipation shutters are fixedly installed on the skin, and the skin is located on the outside of the through-hole between the cab and the car body. The end of the ventilation pipe is located in the interlayer between the cab and the car body. The top of the ventilation pipe is installed on the top of the car body through a flange, and a hood is installed on the top of the ventilation pipe. The engine heat load and engine air intake of the RV are improved, the working reliability is improved, and the system itself has a simple structure and is not prone to failure.

[0004] In combination with the above patents, it is found that the prior art has the following deficiencies: the RV engine radiator is the main cooling source for the engine, and a cooling fan is generally used to directly blow air and dissipate heat to the moisture inside the engine radiator. However, the entire engine and the interior of the RV head are in a high temperature state, and the airflow blown out by the cooling fan will also have a certain temperature, so that the engine radiator cannot be cooled well, thereby affecting the heat dissipation effect of the RV engine. Therefore, a heat dissipation and ventilation structure for RV engines is urgently needed to solve the above problems. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes a heat dissipation and ventilation structure for a motorhome engine to overcome the above-mentioned technical problems existing in the existing related art.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A heat dissipation and ventilation structure for a recreational vehicle engine, comprising:

[0008] An engine body, wherein the engine body is installed in the front of the motorhome;

[0009] A shield frame, the shield frame is installed in the front of the RV, a through hole is opened on one side of the shield frame, and a fan shield is installed on one side of the through hole;

[0010] The wind tube is installed at the bottom of the front of the RV, and one side of the wind tube is provided with air inlets distributed in a circular shape at equal distances, and a dustproof component is installed on one side of the wind tube;

[0011] An exhaust assembly, the exhaust assembly being mounted on the bottom of the shield frame and extending out of the bottom of the front of the RV;

[0012] An L-shaped air duct installed at a middle position between the bottom of the air cylinder and one side of the exhaust assembly;

[0013] The L-shaped air duct is provided with an ascending port on one side of the top, and a sealing plate is fixed to the inner wall of the L-shaped air duct near the ascending port, an air collecting frame is installed on the top of the ascending port, and cooling pipes distributed at equal distances are fixed on the top of the air collecting frame, and the top of the cooling pipes extends to the inside of the fan shield, and a ventilation assembly is provided inside the L-shaped air duct and inside the air cylinder, and the ventilation assembly includes a first cross fixed to the top of the inner wall of the air cylinder, and a first mounting hole is provided in the middle position of the first cross and the middle position of the bottom of the air cylinder, the inner wall of the first mounting hole is rotatably connected to the main shaft through a sealing bearing, and one side of the L-shaped air duct is provided with a first cross fixed to the top of the inner wall of the air cylinder, and the first cross and the bottom of the air cylinder are provided with a first mounting hole, the inner wall of the first mounting hole is rotatably connected to the main shaft through a sealing bearing, and one side of the L-shaped air duct is provided with a first cross fixed to the top of the inner wall of the air cylinder, and the first cross and the bottom of the air cylinder are provided with a first mounting hole, the inner wall of the first mounting hole is rotatably connected to the main shaft through a sealing bearing, and one side of the L-shaped air duct is provided with a first cross fixed to the top of the inner wall of the air cylinder, and the first cross and the bottom of the air cylinder are provided with a first mounting hole, and the inner wall of the L-shaped air duct ... provided with a first cross fixed to the top of the inner wall of the air cylinder, and the first cross and the bottom of the air cylinder are provided with a first mounting hole, and the inner wall A mounting seat is fixed at the end, and a second mounting hole is opened in the middle position of the mounting seat, one end of the L-shaped air duct and the middle position of the sealing disk. The inner wall of the second mounting hole is rotatably connected with a connecting shaft through a sealing bearing. The outer wall of the main shaft is installed with turbine blades, and a first driving bevel gear is installed on the top of the main shaft. A first driven bevel gear meshing with the first driving bevel gear is installed at one end of the connecting shaft, so that the external low-temperature air is mixed with the airflow blown by the engine cooling fan, which can reduce the temperature of the airflow blown out by the engine cooling fan, so that the engine radiator can be better cooled, thereby improving the heat dissipation effect of the RV engine.

[0014] Furthermore, the cooling pipe is composed of a thick tube, a tapered tube and a thin tube welded from bottom to top, and the bottom end of the thin tube extends to the inside of the fan shield, and the bottom of the thick tube is connected to the inside of the wind collecting frame, which increases the air flow velocity, increases the air flow kinetic energy, and reduces the air flow pressure, thereby reducing the air flow temperature, allowing the lower temperature external air flow to enter the fan shield and mix with the air flow driven by the engine cooling fan, fully cooling the engine radiator, and further improving the heat dissipation performance of the RV engine.

[0015] Furthermore, a pressurized fan blade is installed on the outer wall of the connecting shaft near the other side of the riser, which accelerates the flow speed of the air flow in the L-shaped air duct, thereby accelerating the air flow speed entering the riser, the air collecting frame and the cooling pipe, fully reducing the temperature of the external air and fully improving the cooling effect.

[0016] Furthermore, the dust-proof component includes an air inlet pipe fixedly mounted on one side of the air duct, and inclined plates are fixedly mounted on both ends of the air inlet pipe on one side of the inner wall away from the air duct, and a filter is fixedly mounted on the other side of the air inlet pipe close to the inner wall of the air duct, the filter is designed to be V-shaped, and impurity discharge ports are opened on the outer walls on both sides of the air inlet pipe, the impurity discharge ports are inclined, and the impurity discharge ports are flush with one side of the filter, external air is converged through the inclined plate, and the external airflow is filtered through the filter, so that part of the airflow is discharged along the impurity discharge port, and the impurities on the filter are discharged simultaneously, so as to facilitate dust-proof treatment of the entire heat dissipation and ventilation structure.

[0017] Furthermore, the directions of the air inlet duct and the air inlet port are the same as the direction of travel of the front of the RV, so that the air outside the RV can enter the interior of the air inlet duct along the direction of travel of the RV, making it convenient to use the external low-temperature air for heat dissipation.

[0018] Furthermore, a pressure relief pipe is fixed on the other side of the wind duct, and a pressure gauge is installed on the top of the pressure relief pipe. A pressure relief valve is installed at one end of the pressure relief pipe. When the air flow pressure inside the wind duct is too large, the pressure relief valve is controlled to open, and the pressure relief operation is performed through the pressure relief pipe to avoid the problem of resistance generated when the turbine blades rotate under high pressure.

[0019] Furthermore, the exhaust assembly includes exhaust ducts installed at equal distances at the bottom of the shield frame, and the exhaust duct located in the middle position is connected to the other end of the L-shaped duct, a plurality of second crosses are fixed to the inner walls of the exhaust ducts, a third mounting hole is opened in the middle position of the second crosses, the inner wall of the third mounting hole is rotatably connected to a driven shaft through a sealed bearing, an exhaust fan blade is fixedly installed at the bottom end of the driven shaft, a second driven bevel gear is fixedly installed on the outer wall of the driven shaft, and a second active bevel gear meshing with the second driven bevel gear is installed at the other end of the connecting shaft, a downward air circulation passage is formed in the exhaust duct through the exhaust fan blades, and the airflow blown into the shield frame by the engine cooling fan can be discharged out of the RV, thereby accelerating the heat dissipation speed of the RV engine.

[0020] Furthermore, a pulley is fixedly installed on the top end of the driven shaft, and a transmission belt is connected between two adjacent pulleys. The pulley and the transmission belt are located inside the protective cover frame. Under the action of the transmission belt and the pulley, the driven shafts and exhaust fan blades in multiple exhaust ducts can be driven to rotate, forming multiple airflow discharge passages, fully accelerating the ventilation speed and improving the heat dissipation speed.

[0021] Furthermore, a same reinforcement plate is fixedly installed on the bottom of the outer wall of the exhaust duct, and circular holes are opened at equal distances at the bottom of the RV front for the bottom of the exhaust duct to pass through, so that the exhaust duct can be reinforced to ensure the stability of the exhaust duct at the bottom of the RV.

[0022] Furthermore, the pressure gauge and the pressure relief valve are connected to a switch via a wire, and the switch is connected to a control device via a wire, so that the pressure relief valve and the pressure gauge can be automatically controlled to work via the control device.

[0023] Beneficial effects of the present invention:

[0024] 1. A heat dissipation and ventilation structure for a motorhome engine provided by the present invention can, through the cooperation of an air inlet pipe, an air duct, an L-shaped air duct, a fan shield, a main shaft, turbine blades, a cooling pipe, an air collecting frame, a connecting shaft and a pressurized fan blade, etc., blow low-temperature air outside the motorhome into the air inlet pipe and the air duct during the driving of the motorhome, so that the turbine blades rotate and generate vortices to drive the main shaft, the connecting shaft and the pressurized fan blades to rotate, thereby blowing the low-temperature air outside the motorhome into the fan shield and mixing it with the airflow blown by the engine cooling fan, which can reduce the temperature of the airflow blown out by the engine cooling fan, so that the engine radiator can be better cooled, thereby improving the heat dissipation effect of the motorhome engine.

[0025] 2. The present invention provides a heat dissipation and ventilation structure for a motorhome engine. By cooperating with the connecting shaft, pressurized fan blades, thick tubes, tapered tubes and thin tubes, the flow velocity of external air in the L-shaped air duct, the air collecting frame and the cooling tube can be increased when the connecting shaft and the pressurized fan blades rotate. The flow channel is reduced when the high-speed airflow passes through the tapered tube and the thin tube, and the airflow velocity is increased, so that the kinetic energy of the airflow is increased and the airflow pressure is reduced, thereby causing the airflow temperature to drop. The lower-temperature external airflow can enter the fan shield and mix with the airflow driven by the engine cooling fan, thereby fully cooling the engine radiator and further improving the heat dissipation performance of the motorhome engine.

[0026] 3. The present invention provides a heat dissipation and ventilation structure for a motorhome engine. By providing an air inlet pipe and a dust-proof component, when the external airflow enters the air inlet pipe, the external airflow can be filtered through the filter net in the dust-proof component, and part of the airflow is discharged along the exhaust port, simultaneously carrying the debris on the filter net to be discharged, thereby facilitating dust-proof treatment of the entire heat dissipation and ventilation structure.

[0027] 4. The present invention provides a heat dissipation and ventilation structure for a motorhome engine. Through the provision of a shield frame and an exhaust assembly, the main shaft can synchronously drive the driven shaft and exhaust fan blades in the exhaust assembly to rotate when the main shaft rotates, and the air flow blown into the shield frame by the engine cooling fan can be discharged out of the motorhome, thereby realizing an air circulation path and accelerating the heat dissipation speed of the motorhome engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The figure is a schematic diagram of the overall structure of a heat dissipation and ventilation structure for an RV engine.

[0030] Figure 2 The present invention is a cross-sectional view of a heat dissipation and ventilation structure for a recreational vehicle engine.

[0031] Figure 3 The present invention is a schematic diagram of a shield frame and a fan shield structure of a heat dissipation and ventilation structure for an RV engine.

[0032] Figure 4 for Figure 3 Schematic cross-sectional view of .

[0033] Figure 5 The present invention is a schematic diagram of a cooling pipe and an air collecting frame structure of a heat dissipation and ventilation structure for an RV engine.

[0034] Figure 6 The present invention is a schematic diagram of a through hole and a transmission belt structure of a heat dissipation and ventilation structure for an RV engine.

[0035] Figure 7 The present invention is a schematic diagram of an inclined plate and a filter structure of a heat dissipation and ventilation structure for an RV engine.

[0036] Figure 8 The present invention is a schematic diagram of a connecting shaft and a driven shaft structure of a heat dissipation and ventilation structure for a motorhome engine.

[0037] Fig. 9 A schematic diagram of the structure of turbine blades and exhaust fan blades for a heat dissipation and ventilation structure for an RV engine.

[0038] Fig.10 The present invention is a schematic diagram of an air inlet and a pressure relief pipe structure of a heat dissipation and ventilation structure for an RV engine.

[0039] Fig.11 The present invention is a cross-sectional view of an air duct and an air inlet pipe of a heat dissipation and ventilation structure for an RV engine.

[0040] In the figure:

[0041] 1. RV head; 2. Engine body; 3. Engine radiator; 4. Shield frame; 5. Air inlet pipe; 6. Exhaust assembly; 601. Exhaust pipe; 602. Exhaust fan blade; 603. Second cross; 604. Driven shaft; 605. Reinforcement plate; 606. Pulley; 607. Drive belt; 608. Second active bevel gear; 609. Second driven bevel gear; 7. Air cylinder; 8. L-shaped air duct; 9. Engine cooling fan; 10. Fan shield; 11. Main shaft; 12. Turbine blades; 13. Cooling pipe; 1301. Thick pipe; 1302. Conical pipe; 1303. Thin pipe; 14. Wind collecting frame; 15. Mounting seat; 16. Through hole; 17. Inclined plate; 18. Filter screen; 19. Exhaust port; 20. Connecting shaft; 21. First driven bevel gear; 22. First cross; 23. Pressurized fan blade; 24. Sealing disk; 25. Rising port; 26. First active bevel gear; 27. Air inlet; 28. Pressure relief pipe; 29. ​​Pressure relief valve; 30. Barometer. DETAILED DESCRIPTION

[0042] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0043] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0044] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] Embodiment 1:

[0047] According to an embodiment of the present invention,

[0048] See also Figure 1-11 , a heat dissipation and ventilation structure for a motorhome engine, comprising:

[0049] An engine body 2, the engine body 2 is installed in the front of the motorhome 1;

[0050] A shield frame 4 is installed in the front of the RV 1 and is used to wrap the engine radiator 3. A through hole 16 is opened on one side of the shield frame 4, and a fan shield 10 for wrapping the engine cooling fan 9 is installed on one side of the through hole 16;

[0051] The wind tube 7 is installed at the bottom of the front of the RV 1, and one side of the wind tube 7 is provided with air inlets 27 which are equidistantly distributed in a ring shape. A dustproof component is installed on one side of the wind tube 7, and the dustproof component includes an air inlet pipe 5 fixedly installed on one side of the wind tube 7, and both ends of the air inlet pipe 5 on the inner wall of the side away from the wind tube 7 are fixedly installed with inclined plates 17, and the other side of the air inlet pipe 5 close to the inner wall of the wind tube 7 is fixedly installed with a filter 18, the filter 18 is designed to be V-shaped, and the outer walls of both sides of the air inlet pipe 5 are provided with debris discharge ports 19, the debris discharge ports 19 are inclined, and the debris discharge ports 19 are flush with one side of the filter 18, and the directions of the air inlet pipe 5 and the air inlet 27 are the same as the traveling direction of the front of the RV 1, such as Figure 5 , Figure 7 , Fig.10 and Fig.11 As shown, during the driving of the RV, the low-temperature air outside the RV will be blown into the air inlet pipe 5 and the air duct 7, and will be converged through the inclined plate 17 in the dustproof component, and the external airflow will be filtered through the filter 18, so that part of the airflow will be discharged along the impurity discharge port 19, and the impurities on the filter 18 will be discharged simultaneously, so as to facilitate the dust prevention of the entire heat dissipation and ventilation structure;

[0052] An exhaust assembly 6, which is mounted at the bottom of the shield frame 4 and extends out of the bottom of the front of the RV 1;

[0053] L-shaped air duct 8, L-shaped air duct 8 is installed at the bottom of air cylinder 7 and the middle position of one side of exhaust assembly 6, exhaust assembly 6 includes exhaust duct 601 installed at the bottom of shield frame 4 at equal distances, and the exhaust duct 601 located in the middle position is connected with the other end of L-shaped air duct 8, the inner wall of exhaust duct 601 is fixed with a plurality of second crosses 603, the middle position of second crosses 603 is provided with third mounting holes, the inner wall of the third mounting hole is rotatably connected with driven shaft 604 through sealed bearing, the bottom end of driven shaft 604 is fixed with exhaust fan blade 602, driven shaft The outer wall of 604 is fixedly mounted with a second driven bevel gear 609, the other end of the connecting shaft 20 is mounted with a second driving bevel gear 608 meshing with the second driven bevel gear 609, the top of the driven shaft 604 is fixedly mounted with a pulley 606, and a transmission belt 607 is connected between two adjacent pulleys 606, the pulley 606 and the transmission belt 607 are located inside the shield frame 4, the outer wall bottom of the exhaust duct 601 is fixedly mounted with a same reinforcement plate 605, and the bottom of the RV head 1 is provided with circular holes equidistantly provided for the bottom of the exhaust duct 601 to pass through, as shown in FIG. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, when the main shaft 11 rotates, it can synchronously drive the second active bevel gear 608 and the second driven bevel gear 609 in the exhaust assembly 6 to rotate, drive the driven shaft 604 and the exhaust fan blades 602 to rotate, and form a downward air circulation passage in the exhaust pipe 601 through the exhaust fan blades 602, so that the airflow blown into the shield frame 4 by the engine cooling fan 9 can be discharged from the RV, thereby accelerating the heat dissipation speed of the RV engine;

[0054] An ascending port 25 is provided on one side of the top of the L-shaped air duct 8, and a sealing plate 24 is fixed to the inner wall of the L-shaped air duct 8 near the ascending port 25. An air collecting frame 14 is installed on the top of the ascending port 25, and cooling pipes 13 distributed at equal distances are fixed on the top of the air collecting frame 14. The top of the cooling pipe 13 extends to the inside of the fan shield 10. A ventilation assembly is provided inside the L-shaped air duct 8 and inside the air cylinder 7. The ventilation assembly includes a first cross 22 fixed to the top of the inner wall of the air cylinder 7, and a first cross 22 is provided in the middle position of the first cross 22 and in the middle position of the bottom of the air cylinder 7. A mounting hole, the inner wall of the first mounting hole is rotatably connected to the main shaft 11 through a sealed bearing, a mounting seat 15 is fixed to one end of the L-shaped air duct 8, and a second mounting hole is opened in the middle position of the mounting seat 15, one end of the L-shaped air duct 8 and the middle position of the sealing plate 24, the inner wall of the second mounting hole is rotatably connected to the connecting shaft 20 through a sealed bearing, the outer wall of the main shaft 11 is installed with a turbine blade 12, and the top of the main shaft 11 is installed with a first driving bevel gear 26, and one end of the connecting shaft 20 is installed with a first driven bevel gear 21 meshing with the first driving bevel gear 26, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 As shown, during the driving of the RV, the low-temperature air outside the RV will be blown into the air inlet pipe 5 and the wind tube 7, so that the turbine blades 12 rotate and generate vortices under the action of the high-speed airflow, which will drive the main shaft 11 to rotate, and cooperate with the meshing action of the first active bevel gear 26 and the first driven bevel gear 21 to rotate the connecting shaft 20 and the second active bevel gear 608, thereby blowing the low-temperature air outside the RV into the L-shaped air duct 8 and the air collecting frame 14, and also allowing the external low-temperature air to enter the fan shield 10 through the rising port 25, the air collecting frame 14 and the cooling pipe 13, and mix with the airflow blown by the engine cooling fan 9, which can reduce the temperature of the airflow blown out by the engine cooling fan 9, so that the engine radiator 3 can be better cooled, thereby improving the heat dissipation effect of the RV engine.

[0055] Specifically, the cooling tube 13 is formed by welding a thick tube 1301, a tapered tube 1302 and a thin tube 1303 from bottom to top, and the bottom end of the thin tube 1303 extends to the inside of the fan shield 10, and the bottom of the thick tube 1301 is connected to the inside of the air collecting frame 14, as shown in FIG. Figure 5 , Figure 7 and Figure 8As shown, when external air passes through the cooling pipe 13, the flow channel of the external air is reduced when passing through the tapered tube 1302 and the thin tube 1303, the air flow velocity is increased, the kinetic energy of the air flow is increased, and the air flow pressure is reduced, thereby causing the air flow temperature to drop, and the lower temperature external air flow can enter the fan shield 10 and mix with the air flow driven by the engine cooling fan 9, so as to fully cool the engine radiator 3 and further improve the heat dissipation performance of the RV engine.

[0056] Specifically, a pressure relief pipe 28 is fixed to the other side of the air duct 7, and a pressure gauge 30 is installed on the top of the pressure relief pipe 28, and a pressure relief valve 29 is installed at one end of the pressure relief pipe 28. Figure 5 , Fig.10 and Fig.11 As shown, the above-mentioned barometer 30 is used to detect the air flow pressure inside the air duct 7 in real time. When the air flow pressure inside the air duct 7 is too high, the pressure relief valve 29 is controlled to open, and the pressure relief operation is performed through the pressure relief pipe 28 to avoid the problem of resistance generated when the turbine blades 12 rotate under high pressure.

[0057] Specifically, the pressure gauge 30 and the pressure relief valve 29 are connected to a switch via a wire, and the switch is connected to a control device via a wire, such as Fig.10 and Fig.11 As shown, the pressure relief valve 29 and the pressure gauge 30 can be automatically controlled to work under the action of the control device.

[0058] Embodiment 2:

[0059] See also Figure 4 , Figure 8 and Fig. 9 Compared with the first embodiment, the outer wall of the connecting shaft 20 on the other side of the rising port 25 is provided with a pressurizing blade 23. By using the above-mentioned connecting shaft 20 and pressurizing blade 23, when the connecting shaft 20 rotates, the pressurizing blade 23 is driven to rotate, thereby accelerating the flow speed of the airflow in the L-shaped air duct 8, thereby accelerating the airflow speed entering the rising port 25, the air collecting frame 14 and the cooling pipe 13, fully reducing the temperature of the external air, and fully improving the cooling effect.

[0060] To sum up, with the help of the above technical scheme of the present invention, the working principle of the present invention is as follows: during the driving of the RV, the low-temperature air outside the RV will be blown into the air inlet pipe 5 and the air duct 7, and will be converged through the inclined plate 17 in the dustproof component, and the external airflow will be filtered through the filter 18, so that part of the airflow will be discharged along the exhaust port 19, and the debris on the filter 18 will be discharged simultaneously, so as to facilitate the dust prevention treatment of the entire heat dissipation and ventilation structure; and, when the external air enters the air duct 7, the turbine blades 12 will also rotate and generate vortices under the action of the high-speed airflow, at which time the main shaft 11 will be driven to rotate, and the connecting shaft 20, the pressure fan blades 23 and the second active bevel gear 608 will rotate in coordination with the meshing action of the first active bevel gear 26 and the first driven bevel gear 21, so as to blow the low-temperature air outside the RV into the L-shaped air duct 8 and the air collecting frame 14, and also allow the external low-temperature air to enter the fan shield 10 through the rising port 25, the air collecting frame 14 and the cooling pipe 13. The fan blades 23 rotate to increase the speed of the external air in the L-shaped duct 8, the wind collecting frame 14 and the cooling pipe 13, and the high-speed airflow passes through the tapered tube 1302 and the capillary 1303. The flow channel is reduced, the airflow speed is increased, the kinetic energy of the airflow is increased, and the airflow pressure is reduced, thereby causing the airflow temperature to drop, so that the lower-temperature external airflow can enter the fan shield 10 and mix with the airflow driven by the engine cooling fan 9, so as to fully cool the engine radiator 3; then, the driven shaft 604 and the exhaust fan blades 602 in the exhaust assembly 6 can be synchronously driven to rotate through the meshing action of the second active bevel gear 608 and the second driven bevel gear 609, and a downward air circulation passage is formed in the exhaust duct 601 through the exhaust fan blades 602, so that the airflow blown into the protective cover frame 4 by the engine cooling fan 9 can be discharged from the RV, thereby accelerating the heat dissipation speed of the RV engine.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation and ventilation structure for a motorhome engine, characterized in that: include: An engine body (2), wherein the engine body (2) is installed in the front of the motorhome (1); A shield frame (4), the shield frame (4) being installed in the front of the RV (1), a through hole (16) being provided on one side of the shield frame (4), and a fan shield (10) being installed on one side of the through hole (16); a wind tube (7), the wind tube (7) being installed at the bottom of the front of the RV (1), and air inlets (27) being distributed in an annular shape at equal distances being provided on one side of the wind tube (7), and a dustproof component being installed on one side of the wind tube (7); An exhaust assembly (6), the exhaust assembly (6) being mounted on the bottom of the shield frame (4) and extending out of the bottom of the front of the RV (1); An L-shaped air duct (8), the L-shaped air duct (8) being installed at a middle position between the bottom of the air cylinder (7) and one side of the exhaust assembly (6); A rising port (25) is provided on one side of the top of the L-shaped air duct (8), and a sealing plate (24) is fixed to the inner wall of the L-shaped air duct (8) on the side close to the rising port (25), an air collecting frame (14) is installed on the top of the rising port (25), and cooling pipes (13) distributed at equal distances are fixed on the top of the air collecting frame (14), and the top of the cooling pipes (13) extends to the inside of the fan shield (10), and a ventilation assembly is provided inside the L-shaped air duct (8) and inside the wind tube (7), and the ventilation assembly includes a first cross (22) fixed to the top of the inner wall of the wind tube (7), and the middle position of the first cross (22) and the middle position of the bottom of the wind tube (7) are A first mounting hole is provided at each position, the inner wall of the first mounting hole is rotatably connected to a main shaft (11) via a sealing bearing, a mounting seat (15) is fixed to one end of the L-shaped air duct (8), and a second mounting hole is provided at a middle position of the mounting seat (15), one end of the L-shaped air duct (8) and a middle position of a sealing plate (24), the inner wall of the second mounting hole is rotatably connected to a connecting shaft (20) via a sealing bearing, a turbine blade (12) is installed on the outer wall of the main shaft (11), a first driving bevel gear (26) is installed on the top of the main shaft (11), and a first driven bevel gear (21) meshing with the first driving bevel gear (26) is installed at one end of the connecting shaft (20).

2. A heat dissipation and ventilation structure for a motorhome engine according to claim 1, characterized in that: The cooling pipe (13) is composed of a thick pipe (1301), a tapered pipe (1302) and a thin pipe (1303) welded from bottom to top, and the bottom end of the thin pipe (1303) extends to the inside of the fan shield (10), and the bottom of the thick pipe (1301) is connected to the inside of the air collecting frame (14).

3. A heat dissipation and ventilation structure for a motorhome engine according to claim 2, characterized in that: A pressurizing fan blade (23) is installed on the outer wall of the connecting shaft (20) on the other side close to the rising port (25).

4. A heat dissipation and ventilation structure for a motorhome engine according to claim 3, characterized in that: The dustproof component comprises an air inlet pipe (5) fixedly mounted on one side of the air duct (7), and inclined plates (17) are fixedly mounted on both ends of the inner wall of the air inlet pipe (5) away from the air duct (7), and a filter screen (18) is fixedly mounted on the other side of the inner wall of the air inlet pipe (5) close to the air duct (7), the filter screen (18) is designed to be V-shaped, and the outer walls on both sides of the air inlet pipe (5) are provided with impurity discharge ports (19), the impurity discharge ports (19) are inclined, and the impurity discharge ports (19) are flush with one side of the filter screen (18).

5. A heat dissipation and ventilation structure for a motorhome engine according to claim 4, characterized in that: The orientation of the air inlet pipe (5) and the orientation of the air inlet (27) are both the same as the direction of travel of the front of the motorhome (1).

6. A heat dissipation and ventilation structure for a motorhome engine according to claim 5, characterized in that: A pressure relief pipe (28) is fixed to the other side of the wind tube (7), a pressure gauge (30) is installed on the top of the pressure relief pipe (28), and a pressure relief valve (29) is installed at one end of the pressure relief pipe (28).

7. A heat dissipation and ventilation structure for a motorhome engine according to claim 6, characterized in that: The exhaust assembly (6) comprises exhaust ducts (601) installed at equal distances at the bottom of the shield frame (4), and the exhaust duct (601) located in the middle is connected to the other end of the L-shaped duct (8), a plurality of second crosses (603) are fixed to the inner wall of the exhaust duct (601), a third mounting hole is opened in the middle of each second cross (603), the inner wall of the third mounting hole is rotatably connected to a driven shaft (604) via a sealed bearing, an exhaust fan blade (602) is fixedly installed at the bottom end of the driven shaft (604), a second driven bevel gear (609) is fixedly installed on the outer wall of the driven shaft (604), and a second driving bevel gear (608) meshing with the second driven bevel gear (609) is installed at the other end of the connecting shaft (20).

8. A heat dissipation and ventilation structure for a motorhome engine according to claim 7, characterized in that: The top end of each driven shaft (604) is fixedly mounted with a pulley (606), and a transmission belt (607) is connected between two adjacent pulleys (606). The pulley (606) and the transmission belt (607) are located inside the shield frame (4).

9. A heat dissipation and ventilation structure for a motorhome engine according to claim 8, characterized in that: A reinforcing plate (605) is fixedly mounted on the bottom of the outer wall of the exhaust pipe (601).

10. A heat dissipation and ventilation structure for a motorhome engine according to claim 6, characterized in that: The pressure gauge (30) and the pressure relief valve (29) are connected to a switch via a wire, and the switch is connected to a control device via a wire.

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