A highly integrated, low-energy engine cooling system

Abstract

The present invention discloses a highly integrated, low-energy engine heat dissipation system, which belongs to the field of engine cooling and heat dissipation. The generator rotor includes an inner ring connected to the end of the crankshaft and an outer ring connected to the inner ring through a number of evenly distributed connecting plates. The inner ring and the outer ring are located in two parallel planes. One end of the connecting plate is connected to the outer peripheral surface of the inner ring and is bent in an arc toward the outer ring. The other end is connected to the side of the outer ring close to the inner ring. The connecting plate is bent in an arc relative to the inner ring in a radial direction. The bending direction is the same as the rotation direction of the crankshaft. The generator rotor is directly opposite to the heat dissipation pipe arranged in the generator cover. During the operation of the generator rotor, the connecting plate can disturb the air and accelerate the flow of air, which can not only dissipate the heat of the rotor itself, but also improve the heat dissipation efficiency of the heat dissipation pipe and dissipate the heat of the entire engine. The engine system does not need to be provided with a cooling fan, which simplifies the system structure and reduces the engine volume.

Description

Technical Field

[0001] The invention belongs to the technical field of engine cooling and heat dissipation, and in particular is a highly integrated, low-energy-consumption engine heat dissipation system. Background Art

[0002] The traditional engine cooling system consists of a water pump, a radiator, a cooling fan, a compensating water tank, a thermostat, an engine body, a cylinder head water jacket, etc. When the engine is started, the water pump starts working, driving the coolant to circulate in the engine water channel. The coolant absorbs the heat of the engine during the flow process, so that the engine temperature is kept within an appropriate range. After the high-temperature coolant flows into the radiator, the heat is transferred to the air through the radiator core, so that the air is heated and discharged outside the vehicle, thereby reducing the coolant temperature. At the same time, the operation of the cooling fan can accelerate the flow of air and improve the heat dissipation efficiency of the radiator. The cooling fan is usually driven by the engine through the crankshaft and belt, which means that the operation of the fan will occupy part of the engine's power, which affects the engine's output performance to a certain extent. At the same time, the fan also needs to occupy the internal space of the engine, which will increase the size of the engine. Summary of the invention

[0003] The object of the present invention is to provide a highly integrated, low-energy-consumption engine cooling system to solve the problems raised in the above-mentioned background technology.

[0004] The present invention provides a highly integrated, low-energy-consumption engine heat dissipation system, comprising a crankcase, a crankshaft is arranged in the crankcase, the end of the crankshaft is connected to a generator rotor, a generator stator corresponding to the generator rotor is arranged on the crankcase, a generator cover is arranged at one end of the crankcase close to the generator rotor, a heat dissipation pipe is arranged in the generator cover, and the generator rotor is directly facing the heat dissipation pipe;

[0005] The generator rotor includes an inner ring connected to the end of the crankshaft and an outer ring connected to the inner ring through a number of evenly distributed connecting plates. The inner ring and the outer ring are located in two parallel planes. One end of the connecting plate is connected to the outer circumferential surface of the inner ring and is bent in an arc toward the outer ring, and the other end is connected to the side of the outer ring close to the inner ring. The connecting plate is bent in a radial arc relative to the inner ring, and the bending direction is the same as the direction of rotation of the crankshaft.

[0006] As a further solution of the present invention: a mounting tube is provided on the outer peripheral surface of the outer ring, and a permanent magnet is fixed on the inner wall of the mounting tube.

[0007] As a further solution of the present invention: one side of the inner ring is connected to the end of the crankshaft through a flange, and the flange is installed on the concave side of the connecting plate.

[0008] As a further solution of the present invention: the flange includes an end plate, one side of the end plate is connected to the inner ring, the other side of the end plate is provided with a shoulder, the other side of the shoulder is provided with a plug, and the surface of the shoulder is provided with a keyway;

[0009] The crankshaft end surface is provided with a stepped hole for accommodating a plug and a shoulder, and the inner wall of the stepped hole is provided with a key corresponding to the keyway.

[0010] As a further solution of the present invention: two opposing connecting rods are installed on the crankshaft, pistons are provided at the ends of the connecting rods and are assembled in the combustion chamber, and a water jacket is installed outside the combustion chamber;

[0011] A first connecting pipe is provided at one end of the crankcase away from the generator rotor. The first connecting pipe is respectively connected to the water jackets on both sides. The first connecting pipe is also connected to the liquid outlet pump, the liquid outlet pump is connected to the heat dissipation pipe, the heat dissipation pipe is connected to the generator cover, and the water jacket is also connected to the generator cover.

[0012] As a further solution of the present invention: a water bath cavity is provided inside the water jacket, a combustion chamber is arranged inside the water bath cavity, one end of the water jacket is sealed with the bottom plate of the valve chamber, and a support plate is provided at the other end, and the support plate is provided with a first central through hole communicating with the water bath cavity;

[0013] The side wall of the water jacket is provided with an air intake pipe channel and an exhaust pipe channel located on opposite sides, the side wall of the water jacket is also provided with two liquid inlet channels, the two liquid inlet channels are arranged on both sides of the exhaust pipe channel, and the side wall of the water jacket is also provided with a liquid outlet channel, the liquid outlet channel is located next to the air intake pipe channel;

[0014] The air inlet pipe channel, the air outlet pipe channel, the liquid inlet channel and the liquid outlet channel are respectively connected to the water bath chamber.

[0015] As a further solution of the present invention: the liquid inlet channel is provided with a spray port at one end of the water bath chamber, and the spray ports of the two liquid inlet channels are respectively directed toward the exhaust pipe.

[0016] As a further solution of the present invention: the support plate includes a support plate bottom plate, a support plate inner vertical plate and a support plate outer vertical plate. One side of the support plate inner vertical plate is sealed against the outer wall of the combustion chamber, and the other side is abutted against the inner wall of the water jacket. The support plate bottom plate protrudes from the support plate inner vertical plate to form an end face seal.

[0017] As a further solution of the present invention: the end surface of the combustion chamber is welded to the bottom plate of the support plate.

[0018] As a further solution of the present invention: the generator cover is provided with a water channel, the water channel is connected to the generator cover liquid outlet channel, the water channel is also provided with a water channel opening connected to the heat dissipation pipe, and the side wall of the generator cover is also provided with a card slot.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. During the operation of the generator rotor, the connecting piece can disturb the air and accelerate the flow of air, which can not only dissipate the heat of the rotor itself, but also improve the heat dissipation efficiency of the heat pipe and dissipate the heat of the entire engine. The engine system does not need to be equipped with a cooling fan, which simplifies the system structure and reduces the engine size.

[0021] 2. The engine crankshaft drives the generator rotor, which disturbs the air during its rotation, cooling the generator and the engine's radiator pipes. The cooling water cooled by the radiator pipes enters the water jacket to provide water bath cooling for the combustion chamber. The water after absorbing heat is pumped into the radiator pipes again. The entire cooling system adopts a fixed-point circulating heat source centralized cooling method to reduce energy waste and loss and improve overall energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0024] Figure 2 is a schematic structural diagram of a generator rotor according to an embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a flange according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic structural diagram of a water jacket assembly combustion chamber according to an embodiment of the present invention;

[0027] Figure 5 A schematic structural diagram of a support plate according to an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of assembling the heat dissipation pipe and the generator cover according to an embodiment of the present invention;

[0029] Figure 7 It is the relationship diagram between engine speed and power;

[0030] Figure 8 This is a simulation result diagram of the cooling water flow velocity field of the present invention;

[0031] Fig. 9 This is the simulation result diagram of the cooling water flow velocity field of the existing casting water jacket.

[0032] In the figure: 1-water jacket; 11-liquid inlet channel; 12-exhaust pipe channel; 13-liquid outlet channel; 14-intake pipe channel; 15-combustion chamber; 16-spark plug installation guide tube; 17-intake pipe; 18-exhaust pipe; 19-water bath chamber; 110-support plate; 1101-support plate bottom plate; 1102-support plate inner plate; 1103-support plate outer plate; 111-valve chamber bottom plate; 2-generator stator; 3-crankshaft; 4-generator rotor; 41-outer ring; 42-inner ring; 43-connecting plate; 4 4-flange; 441-end plate; 442-shoulder; 443-keyway; 444-plug; 45-installation tube; 46-permanent magnet; 5-heat dissipation pipe; 51-heat dissipation pipe liquid inlet; 52-heat dissipation pipe liquid outlet; 6-generator cover; 61-generator cover liquid outlet channel; 62-water channel; 7-liquid outlet pump; 71-liquid outlet pump liquid inlet channel; 72-liquid outlet pump liquid outlet channel; 8-first connecting pipe; 81-first connecting pipe liquid inlet; 82-first connecting pipe liquid outlet; 9-second connecting pipe; 10-crankcase. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0035] See also Figure 1 As shown, this embodiment provides a highly integrated, low-energy engine cooling system, including a crankcase 10, in which a crankshaft 3 is provided, the end of the crankshaft 3 is connected to a generator rotor 4, a generator stator 2 corresponding to the generator rotor 4 is provided on the crankcase 10, a generator cover 6 is provided at one end of the crankcase 10 close to the generator rotor 4, a heat dissipation pipe 5 is arranged in the generator cover 6, and the generator rotor 4 is directly opposite to the heat dissipation pipe 5.

[0036] See also Figure 2As shown, the generator rotor 4 includes an inner ring 42 connected to the end of the crankshaft 3, and an outer ring 41 connected to the inner ring 42 through a number of evenly arranged connecting pieces 43, and the inner ring 42 and the outer ring 41 are located in two parallel planes. One end of the connecting piece 43 is connected to the outer peripheral surface of the inner ring 42 and is bent in an arc toward the outer ring 41, and the other end is connected to the side of the outer ring 41 close to the inner ring 42. The connecting piece 43 is bent in an arc relative to the inner ring 42 in another direction, and the bending direction is the same as the rotation direction of the crankshaft 3.

[0037] A plurality of connecting pieces 43 are evenly distributed in a ring between the outer ring 41 and the inner ring 42. During the operation of the generator rotor 4, the connecting pieces 43 of the structure above can disturb the surrounding air and accelerate the flow of air, which can not only dissipate heat for the generator rotor 4 itself, but also improve the heat dissipation efficiency of the heat dissipation pipe 5. There is no need to set a cooling fan to dissipate heat for the heat dissipation pipe 5, and no additional driving power is required, which greatly improves the space utilization rate, eliminates the complex and large external circulation system, simplifies the system structure, improves the cooling efficiency, reduces energy loss, and reduces the cost at the same time.

[0038] According to the calculation formula ,in For heat, for an engine, A, , are all constant values, so the heat With power The higher the speed, the higher the engine power. Figure 7 This solution utilizes the rotation of the generator rotor 4 itself, and the speed of the generator rotor 4 reflects the speed of the generator. The speed of the generator is consistent with the speed of the engine. When the speed of the generator is high, the wind speed is also high. On the contrary, when the speed of the generator is low, the wind speed is low. It can achieve self-regulation. When the engine power and calorific value increase, the wind speed will also be faster to control the temperature rise. When the engine power and calorific value decrease, the wind speed will also decrease, reducing unnecessary energy loss, further saving energy and reducing consumption, and reducing costs.

[0039] Furthermore, the number of the connecting sheets 43 is between 3 and 10.

[0040] In some embodiments, a mounting tube 45 is disposed on the outer circumference of the outer ring 41 , and the inner wall of the mounting tube 45 is used to fix the permanent magnet 46 .

[0041] In some embodiments, one side of the inner ring 42 is connected to the end of the crankshaft 3 through a flange 44, and the flange 44 is installed on the concave side of the connecting plate 43, so that the connecting plate 43 can disturb the air to blow toward the heat pipe 5 during the rotation of the generator rotor 4 to cool the coolant.

[0042] In some embodiments, see Figure 3As shown, the flange 44 includes an end plate 441, one side of the end plate 441 is connected to the inner ring 42, and the other side is provided with a shoulder 442, and the other side of the shoulder 442 is provided with a plug 444, and the surface of the shoulder 442 is provided with a keyway 443. The end surface of the crankshaft 3 is provided with a stepped hole for accommodating the plug 444 and the shoulder 442, and the inner wall of the stepped hole is provided with a key corresponding to the keyway 443.

[0043] The plug 444 and the shoulder 442 are placed in the stepped hole on the end face of the crankshaft 3, and the key on the inner wall of the stepped hole extends from the keyway 443. The end face of the crankshaft 3 abuts against the end plate 441, so that the flange 44 can stably rotate synchronously with the crankshaft 3, thereby synchronously rotating the generator rotor 4 connected to the end plate 441.

[0044] In some embodiments, two opposing connecting rods are installed on the crankshaft 3, and pistons are provided at the ends of the connecting rods and assembled in the combustion chamber 15, and a water jacket 1 is provided outside the combustion chamber 15. The crankcase 10 is provided with a first connecting pipe 8 at one end away from the generator rotor 4. The first connecting pipe 8 is U-shaped, and the two ends are bent to form first connecting pipe liquid inlets 81, respectively. The first connecting pipe liquid inlets 81 at both ends are respectively connected to the water jackets 1 on both sides. The middle of the first connecting pipe 8 is also provided with a first connecting pipe liquid outlet 82, which is connected to the liquid pump inlet channel 71 of the liquid pump 7 through the second connecting pipe 9, and the liquid pump outlet channel 72 of the liquid pump 7 is connected to the heat pipe inlet 51 of the heat pipe 5, and the heat pipe outlet 52 of the heat pipe 5 is connected to the generator cover 6, and the water jacket 1 is also connected to the generator cover 6 through the generator cover outlet channel 61.

[0045] The liquid outlet pump 7 pumps out the coolant through the liquid outlet channel 72 of the liquid outlet pump. After the coolant enters the heat pipe 5 from the heat pipe liquid inlet 51, it enters the generator cover 6 from the heat pipe liquid outlet 52, and then enters the water jacket 1 through the generator cover liquid outlet channel 61, and then converges into the first connecting pipe 8 through the first connecting pipe liquid inlet 81, and then enters the second connecting pipe 9 through the first connecting pipe liquid outlet 82, and reaches the liquid outlet pump 7 from the liquid outlet channel 71, forming a closed-loop circulation of the coolant to continuously cool the engine. The crankshaft 3 of the engine drives the generator rotor 4, and the generator rotor 4 disturbs the air during the rotation process, which cools the heat pipe 5 of the generator and the engine, and the cooling water cooled by the heat pipe 5 enters the water jacket 1 to provide water bath cooling for the combustion chamber 15, and the water after absorbing heat is pumped into the heat pipe 5 again. The entire heat dissipation system adopts a fixed-point circulation heat source centralized cooling method to reduce energy waste and loss and improve the overall energy utilization efficiency.

[0046] In some embodiments, see Figure 4As shown, a water bath chamber 19 is provided inside the water jacket 1, and a combustion chamber 15 is placed inside the water bath chamber 19. One end of the water jacket 1 is sealed with a valve chamber bottom plate 111, and the other end is provided with a support plate 110, and the support plate 110 is provided with a first central through hole connected to the water bath chamber 19. The side wall of the water jacket 1 is provided with an intake pipe channel 14 and an exhaust pipe channel 12 located on opposite sides. The side wall of the water jacket 1 is also provided with two liquid inlet channels 11, which are symmetrically arranged on both sides of the exhaust pipe channel 12. The side wall of the water jacket 1 is also provided with a liquid outlet channel 13, which is located next to the intake pipe channel 14. The intake pipe channel 14, the exhaust pipe channel 12, the liquid inlet channel 11, and the liquid outlet channel 13 are respectively connected to the water bath chamber 19.

[0047] When the combustion chamber 15 is assembled in the water bath chamber 19, the intake pipe 17 of the combustion chamber 15 extends out of the water jacket from the intake pipe channel 14, the exhaust pipe 18 of the combustion chamber 15 extends out of the water jacket from the exhaust pipe channel 12, and the spark plug installation guide 16 of the combustion chamber 15 extends out of the water jacket through the valve chamber bottom plate 111. An injection port is provided at one end of the liquid inlet channel 11 located in the water bath chamber 19, and the injection ports of the two liquid inlet channels 11 face the exhaust pipe 18 respectively.

[0048] The water jacket 1 fully surrounds the cylinder body, cylinder head and exhaust pipe 18 of the combustion chamber 15, performs liquid bath cooling, and performs jet cooling on the hot spots on the exhaust side of the combustion chamber 15, thereby improving the cooling effect of the high-temperature area on the exhaust side and forming strong turbulence around the combustion chamber 15. The cooling consistency is good, there is no local hot spot, and the risk of knock is greatly reduced. The simulation result diagram of the internal cooling water flow velocity field of the water jacket of the present invention is shown in FIG. Figure 8 , Fig. 9 The simulation result diagram of the cooling water flow velocity field of the existing casting water jacket is shown. It can be seen that compared with the existing casting water jacket, the flow velocity in the hot spot area on the exhaust side of this scheme is fast, and the flow velocity in other areas is uniform.

[0049] In some embodiments, see Figure 5 As shown, the support plate 110 includes a support plate bottom plate 1101, a support plate inner vertical plate 1102 and a support plate outer vertical plate 1103. The inner wall surface of the support plate inner vertical plate 1102 is sealed against the outer wall of the combustion chamber 15, and the outer wall surface of the support plate outer vertical plate 1103 is sealed against the inner wall of the water jacket 1. The support plate bottom plate 1101 protrudes from the support plate inner vertical plate 1102, and the protruding portion is welded to the end face of the combustion chamber 15 to form an end face seal.

[0050] In some embodiments, see Figure 6As shown, the generator cover 6 is provided with a water channel 62, which is connected to the generator cover liquid outlet channel 61. In view of the fact that the two water jackets 1 are each provided with two liquid inlet channels 11, the generator cover 6 is provided with four generator cover liquid outlet channels 61. The water channel 62 can be provided along the inner wall of the generator cover 6, and the four generator cover liquid outlet channels 61 are all connected to the water channel 62. The water channel 62 is also provided with a water channel opening connected to the heat dissipation pipe liquid outlet 52. The side wall of the generator cover 6 is also provided with a card slot. One end of the heat dissipation pipe 5 close to the heat dissipation pipe liquid inlet 51 is carded in the card slot, and the heat dissipation pipe liquid inlet 51 is located outside the generator cover 6, so as to be conveniently connected to the liquid outlet channel 72 of the liquid outlet pump. The heat dissipation pipe 5 is embedded in the generator cover 6, and the end surface of the generator cover 6 is provided with a heat dissipation hole. The cooling water in the heat dissipation pipe 5 is diverted to each generator cover liquid outlet channel 61 through the water channel 62 and enters the water jacket 1.

[0051] In some embodiments, the water jacket 1 is integrated with the valve chamber bottom plate 111 .

[0052] It should be noted that adhesive sealing can also be used at places that need to be sealed in the embodiment to prevent cooling water leakage.

[0053] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A highly integrated, low-energy engine cooling system, characterized in that: It comprises a crankcase, a crankshaft is arranged in the crankcase, the end of the crankshaft is connected to the generator rotor, a generator stator corresponding to the generator rotor is arranged on the crankcase, a generator cover is arranged at one end of the crankcase close to the generator rotor, a heat dissipation pipe is arranged in the generator cover, and the generator rotor is directly facing the heat dissipation pipe; The generator rotor comprises an inner ring connected to the end of the crankshaft, and an outer ring connected to the inner ring through a plurality of evenly distributed connecting pieces, wherein the inner ring and the outer ring are located in two parallel planes, one end of the connecting piece is connected to the outer peripheral surface of the inner ring and is bent in an arc toward the outer ring, and the other end is connected to the side surface of the outer ring close to the inner ring, and the connecting piece is bent in an arc relative to the radial direction of the inner ring, and the bending direction is the same as the rotation direction of the crankshaft; The outer peripheral surface of the outer ring is provided with a mounting tube, and a permanent magnet is fixed on the inner wall of the mounting tube; The crankshaft is provided with two opposing connecting rods, the ends of the connecting rods are provided with pistons which are assembled in the combustion chamber, and the combustion chamber is provided with a water jacket; A first connecting pipe is provided at one end of the crankcase away from the generator rotor, the first connecting pipe is respectively connected to the water jackets on both sides, the first connecting pipe is also connected to the liquid outlet pump, the liquid outlet pump is connected to the heat dissipation pipe, the heat dissipation pipe is connected to the generator cover, and the water jacket is also connected to the generator cover; A water bath cavity is provided inside the water jacket, and a combustion chamber is arranged in the water bath cavity. One end of the water jacket is sealed with the bottom plate of the valve chamber, and the other end is provided with a support plate, and the support plate is provided with a first central through hole communicating with the water bath cavity; The side wall of the water jacket is provided with an air intake pipe channel and an exhaust pipe channel located on opposite sides, the side wall of the water jacket is also provided with two liquid inlet channels, the two liquid inlet channels are arranged on both sides of the exhaust pipe channel, and the side wall of the water jacket is also provided with a liquid outlet channel, the liquid outlet channel is located next to the air intake pipe channel; The air inlet channel, the exhaust channel, the liquid inlet channel, and the liquid outlet channel are respectively connected to the water bath chamber; The liquid inlet channel is located at one end of the water bath chamber and is provided with a spray port, and the spray ports of the two liquid inlet channels are respectively directed toward the exhaust pipe.

2. A highly integrated, low energy consumption engine cooling system according to claim 1, characterized in that: One side of the inner ring is connected to the end of the crankshaft through a flange, and the flange is installed on the concave side of the connecting plate.

3. A highly integrated, low energy consumption engine cooling system according to claim 2, characterized in that: The flange comprises an end plate, one side of the end plate is connected to the inner ring, the other side is provided with a shoulder, the other side of the shoulder is provided with a plug, and the surface of the shoulder is provided with a keyway; The crankshaft end surface is provided with a stepped hole for accommodating a plug and a shoulder, and the inner wall of the stepped hole is provided with a key corresponding to the keyway.

4. The highly integrated, low-energy engine cooling system according to claim 1, characterized in that: The support plate includes a support plate bottom plate, a support plate inner plate and a support plate outer plate. One side of the support plate inner plate is sealed against the outer wall of the combustion chamber and the other side is sealed against the inner wall of the water jacket. The support plate bottom plate protrudes from the support plate inner plate to form an end face seal.

5. A highly integrated, low energy consumption engine cooling system according to claim 4, characterized in that: The end surface of the combustion chamber is welded to the bottom plate of the support plate.

6. The highly integrated, low-energy engine cooling system according to claim 1, characterized in that: The generator cover is provided with a water channel, the water channel is connected to the generator cover liquid outlet channel, the water channel is also provided with a water channel opening connected to the heat dissipation pipe, and the side wall of the generator cover is also provided with a card slot.

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