Cooling device and vehicle

Abstract

The cooling device comprises a bottom plate, an engine oil cooler and an EGR cooler, the bottom plate is provided with a flow inlet, a flow outlet and a binding face, the binding face is used for being matched with the end face of an engine, the engine oil cooler is integrated on the bottom plate, the engine oil cooler is provided with an oil way and a first cooling channel communicating with the flow inlet, and the EGR cooler is integrated on the bottom plate. The EGR cooler is provided with a waste gas channel and a second cooling channel communicating with the first cooling channel and the flow outlet, cooling liquid in the engine flows into the first cooling channel through the flow inlet, flows into the second cooling channel after conducting heat exchange with engine oil in the oil channel, and flows back to the engine from the flow outlet after conducting heat exchange with waste gas in the waste gas channel. According to the engine cooling device, the engine oil cooler and the EGR cooler are integrated on the bottom plate, so that the cooling device is compact in structure, the binding face of the bottom plate is directly matched with the end face of the engine, connecting pipelines are reduced, the occupied space of the cooling device is reduced, and arrangement of the engine is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a cooling device and a vehicle. Background Art

[0002] In the engine structure of a vehicle, to ensure that the engine oil works within the most favorable temperature range, in addition to relying on the natural cooling of the engine oil in the oil pan, an engine oil cooler also needs to be additionally provided to cool the engine oil. The Exhaust Gas Re-circulation (EGR) system is an effective measure to reduce NOx emissions. Its principle is to introduce a part of the exhaust gas into the combustion chamber, and by absorbing part of the heat generated during combustion, the combustion temperature and pressure are reduced to reduce the generation of NOx. To reduce the temperature of the exhaust gas entering the combustion chamber, the exhaust gas introduced into the combustion chamber also needs to be cooled. Therefore, an EGR cooler is provided in the engine EGR system.

[0003] In the prior art, both the engine oil cooler and the EGR cooler are independently arranged structures. The engine oil cooler is connected to the cylinder block of the engine, the EGR cooler is connected to the cylinder block of the engine, and the engine oil cooler is connected to the EGR cooler through rubber water pipes, resulting in complex pipelines and large installation space occupation problems, increasing costs, and being not conducive to the layout of the engine in the engine compartment. Utility Model Content

[0004] In order to overcome the problems existing in the above prior art, the main purpose of the present application is to provide a cooling device and a vehicle that can reduce the occupied space to facilitate installation.

[0005] To achieve the above purpose, the present application specifically adopts the following technical solutions:

[0006] A cooling device, comprising:

[0007] A bottom plate, the bottom plate is provided with an inlet, an outlet and a fitting surface, and the fitting surface is used for cooperating with the end face of the engine;

[0008] An engine oil cooler, the engine oil cooler is integrated on the bottom plate, and the engine oil cooler is provided with an oil passage and a first cooling channel communicated with the inlet;

[0009] An EGR cooler, the EGR cooler is integrated on the bottom plate, and the EGR cooler is provided with an exhaust gas passage and a second cooling channel communicated with the first cooling channel and the outlet respectively;

[0010] The coolant in the engine flows into the first cooling channel through the inlet port, exchanges heat with the engine oil in the oil channel, then flows into the second cooling channel, exchanges heat with the exhaust gas in the exhaust gas channel, and finally flows back into the engine through the outlet port.

[0011] In some embodiments, the bottom plate is further provided with an oil inlet and an oil return port communicating with the engine oil channel, and the oil channel communicates with the oil inlet and the oil return port respectively.

[0012] In some embodiments, the oil cooler includes a connecting plate and an oil cooler body. The connecting plate is connected to the bottom plate, and the connecting plate is provided with a first liquid inlet. The oil cooler body is connected to the connecting plate, and the oil cooler body is provided with the oil channel and the first cooling channel. The first cooling channel communicates with the inlet port through the first liquid inlet.

[0013] In some embodiments, the connecting plate and the bottom plate are integrally formed; or,

[0014] The connecting plate and the bottom plate are connected by welding.

[0015] In some embodiments, the top of the oil cooler body is provided with a first liquid outlet communicating with the first cooling channel. The EGR cooler includes a housing connected to the bottom plate, and the top of the housing is provided with a second liquid inlet. The second liquid inlet is communicated with the first liquid outlet through a connecting pipe.

[0016] In some embodiments, the housing and the bottom plate are integrally formed; or,

[0017] The housing and the bottom plate are connected by welding.

[0018] In some embodiments, the housing is further provided with a cavity, a second liquid outlet, an exhaust gas inlet and an exhaust gas outlet. The second liquid outlet communicates with the second liquid inlet through the cavity to form the second cooling channel. The EGR cooler further includes a mid-core flat tube assembly disposed in the cavity, and the mid-core flat tube assembly communicates with the exhaust gas inlet and the exhaust gas outlet respectively to form the exhaust gas channel.

[0019] In some embodiments, the cooling device further includes a first connecting flange and a second connecting flange. The first connecting flange is disposed at the exhaust gas inlet, and the second connecting flange is disposed at the exhaust gas outlet.

[0020] In some embodiments, the cooling device further includes a seal. One end of the seal abuts against the joint surface, and the other end of the seal abuts against the end face of the engine.

[0021] In some embodiments, a vehicle includes a vehicle body, a plurality of wheels, an engine, and the cooling device according to any one of the above. The plurality of wheels are respectively connected to the vehicle body, the engine is disposed in the vehicle body, and the cooling device is connected to the engine.

[0022] Compared with the prior art, the cooling device provided by the present application has at least the following beneficial effects:

[0023] The bottom plate of the present application is provided with an inlet port, an outlet port, and a fitting surface. The fitting surface is used to cooperate with the end face of the engine. The oil cooler and the EGR cooler are respectively integrated on the bottom plate. The oil cooler is provided with a first cooling channel communicating with the inlet port, and the EGR cooler is provided with a second cooling channel communicating with the first cooling channel and the outlet port respectively. By integrating the oil cooler and the EGR cooler on the bottom plate respectively, the cooling device has a compact structure, and by directly cooperating the fitting surface of the bottom plate with the end face of the engine, the connecting pipelines are reduced, thereby reducing the occupied space of the cooling device and facilitating the arrangement of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural view of the cooling device provided by the embodiment of the present application;

[0025] Figure 2 is a schematic structural view of the cooling device from another perspective provided by the embodiment of the present application.

[0026] Reference Signs:

[0027] 1, bottom plate; 11, inlet port; 12, outlet port; 13, fitting surface; 14, oil inlet; 15, oil return port; 16, connection hole;

[0028] 2, oil cooler; 21, connecting plate; 22, oil cooler body; 220, first liquid outlet; 23, oil passage; 24, first cooling channel;

[0029] 3, EGR cooler; 31, housing; 310, second liquid inlet; 311, exhaust gas inlet; 312, exhaust gas outlet; 32, exhaust gas passage; 33, second cooling channel;

[0030] 4, connecting pipe;

[0031] 5, first connecting flange;

[0032] 6, second connecting flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] In the description of the present application, unless otherwise clearly defined and limited, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plural" means two or more, and the term "multiple types" means two or more types; the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] In the description of this specification, it should be understood that the orientation terms such as "upper" and "lower" described in the embodiments of the present application are described from the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element.

[0036] This embodiment discloses a vehicle, which includes a vehicle body, a plurality of wheels, an engine and a cooling device. The plurality of wheels are respectively connected to the vehicle body. The engine is disposed on the vehicle body, and the engine includes a cylinder block. The cylinder block is provided with a cooling flow channel and an oil channel. The cooling flow channel is used for the circulation of coolant, and the oil channel is used for the circulation of oil. The oil is used to lubricate various components in the engine. The cooling device is connected to the cylinder block and is respectively communicated with the cooling flow channel and the oil channel.

[0037] Refer to Figure 1 and Figure 2 as shown, Figure 1 which is a schematic structural diagram of the cooling device provided by the embodiment of the present application. Figure 2This is a schematic structural diagram of another perspective of the cooling device provided by the embodiments of the present application. This embodiment discloses a cooling device, which includes a bottom plate 1, an engine oil cooler 2, and an EGR cooler 3. The bottom plate 1 is provided with an inlet port 11, an outlet port 12, and a mating surface 13. The mating surface 13 is used to cooperate with the end face of the cylinder block to mount the bottom plate 1 on the engine. The engine oil cooler 2 is integrated into the bottom plate 1, and the engine oil cooler 2 is provided with an oil passage 23 and a first cooling channel 24 communicating with the inlet port 11. The EGR cooler 3 is integrated into the bottom plate 1, and the EGR cooler 3 is provided with an exhaust gas passage 32 and a second cooling channel 33 communicating with the first cooling channel 24 and the outlet port 12 respectively.

[0038] During operation, the coolant in the cooling flow passage of the engine cylinder block first flows into the first cooling channel 24 through the inlet port 11, exchanges heat with the engine oil in the oil passage 23 to cool the engine oil, reducing the situation of engine oil deterioration caused by excessive temperature, thereby ensuring the normal operation of the engine. Then it flows into the second cooling channel 33, exchanges heat with the exhaust gas in the exhaust gas passage 32 to cool the exhaust gas, thereby reducing the emission of harmful substances such as nitrogen oxides to protect the environment. Then it flows back into the cooling flow passage of the engine cylinder block from the outlet port 12, and then the coolant is cooled by the cooling system. The cooled coolant enters the cooling device again through the cooling flow passage of the engine cylinder block, and this cycle continues.

[0039] In this embodiment, the cooling device further includes a seal. One end of the seal abuts against the mating surface 13, and the other end of the seal abuts against the end face of the engine. The seal reduces the leakage of coolant or engine oil from the connection between the bottom plate 1 and the engine, thereby ensuring the sealing performance of the connection between the bottom plate 1 and the engine.

[0040] In this embodiment, a plurality of connection holes 16 are provided on the periphery of the bottom plate 1, and the cylinder block is provided with a plurality of mounting holes. Each mounting hole corresponds to each connection hole 16 respectively. The cooling device further includes fasteners, and the fasteners pass through the connection holes 16 and the mounting holes respectively to fix the bottom plate 1 to the cylinder block.

[0041] The bottom plate 1 of this embodiment is provided with an inlet port 11, an outlet port 12, and a mating surface 13. The mating surface 13 is used to cooperate with the end face of the engine. The engine oil cooler 2 and the EGR cooler 3 are respectively integrated into the bottom plate 1. The engine oil cooler 2 is provided with a first cooling channel 24 communicating with the inlet port 11, and the EGR cooler 3 is provided with a second cooling channel 33 communicating with the first cooling channel 24 and the outlet port 12 respectively. By integrating the engine oil cooler 2 and the EGR cooler 3 into the bottom plate 1 respectively, the cooling device has a compact structure, and by directly cooperating the mating surface 13 of the bottom plate 1 with the end face of the engine, the connecting pipelines are reduced, thereby reducing the occupied space of the cooling device and facilitating the layout of the engine.

[0042] Refer toFigure 1 and Figure 2 As shown in Figure 2 , the engine oil cooler 2 includes a connecting plate 21 and an engine oil cooler body 22. The connecting plate 21 is connected to the bottom plate 1, and the connecting plate 21 is provided with a first liquid inlet. The engine oil cooler body 22 is connected to the connecting plate 21, and the engine oil cooler body 22 is provided with an oil passage 23 and a first cooling channel 24. The first cooling channel 24 is communicated with the inflow port 11 through the first liquid inlet.

[0043] In this embodiment, the connecting plate 21 and the bottom plate 1 are integrally formed, which is convenient for manufacturing, improves the structural strength of the cooling device, thereby prolongs the service life of the cooling device and reduces the cost. It can be understood that in other embodiments, the connecting plate 21 and the bottom plate 1 can also be connected by welding, or the connecting plate 21 and the bottom plate 1 can also be bolt-connected.

[0044] Referring to Figure 2 As shown in Figure 2 , the bottom plate 1 is further provided with an oil inlet 14 and an oil return port 15 communicated with the engine oil passage of the cylinder block. The connecting plate 21 is provided with an oil inlet hole and an oil return hole. The oil passage 23 is communicated with the oil inlet 14 through the oil inlet hole, and the oil passage 23 is communicated with the oil return port 15 through the oil outlet hole.

[0045] In this embodiment, by respectively arranging the oil inlet 14 and the oil return port 15 on the bottom plate 1, the connecting pipelines between the engine oil cooler 2 and the engine are further reduced, thereby further reducing the occupied space of the cooling device and facilitating the arrangement of the engine in the engine compartment.

[0046] Referring to Figure 1 and Figure 2 As shown in Figure 2 , the top of the engine oil cooler body 22 is provided with a first liquid outlet 220 communicated with the first cooling channel 24. The EGR cooler 3 includes a housing 31 and a core flat tube assembly. The housing 31 is provided with a second liquid inlet 310, a second liquid outlet, a cavity, an exhaust gas inlet 311 and an exhaust gas outlet 312. The second liquid inlet 310 is located at the top of the housing 31, and the second liquid inlet 310 is communicated with the first liquid outlet 220 through a connecting pipe 4. The second liquid outlet is communicated with the outflow port 12, and the second liquid outlet is communicated with the second liquid inlet 310 through the cavity to form a second cooling channel 33. The core flat tube assembly is arranged in the cavity, and the core flat tube assembly is respectively communicated with the exhaust gas inlet 311 and the exhaust gas outlet 312 to form an exhaust gas channel 32. The exhaust gas inlet 311 is used for connecting with a three-way catalytic converter, and the three-way catalytic converter is used for treating the exhaust gas discharged from the engine to reduce the emission of harmful substances through chemical reactions. The exhaust gas outlet 312 is used for connecting with a turbocharger, and the turbocharger is used for driving the turbine to rotate at a high speed by using the exhaust gas discharged from the engine, and then driving the coaxial compressor to rotate at a high speed, and forcibly pressing the supercharged air into the cylinder to improve the power and torque of the engine.

[0047] In this embodiment, the housing 31 and the bottom plate 1 are integrally formed, which is convenient for manufacturing, improves the structural strength of the cooling device, thus increasing the service life of the cooling device and reducing the cost. It can be understood that in other embodiments, the housing 31 and the bottom plate 1 can also be connected by welding, or the housing 31 and the bottom plate 1 can be bolted together.

[0048] In this embodiment, the cooling device further includes a first connecting flange 5 and a second connecting flange 6. The first connecting flange 5 is arranged at the exhaust gas inlet 311, and the second connecting flange 6 is arranged at the exhaust gas outlet 312. The exhaust gas inlet 311 and the three-way catalytic converter, and the exhaust gas outlet 312 and the turbocharger are respectively flange-connected. Flange connection is convenient for disassembly and installation, thus facilitating the maintenance of the cooling device. Moreover, flange connection has excellent sealing performance, reducing the situation of environmental pollution caused by exhaust gas leakage and enhancing the safety and reliability of the cooling device. It can be understood that in other embodiments, the exhaust gas inlet 311 and the three-way catalytic converter, and the exhaust gas outlet 312 and the turbocharger can also be connected by other connection methods respectively, such as clamp connection, threaded connection, etc.

[0049] In this embodiment, the first liquid outlet 220 is located at the top of the oil cooler body 22, and the second liquid inlet 310 is located at the top of the housing 31, which facilitates the connection between the first liquid outlet 220 and the second liquid inlet 310 and reduces the length of the connecting pipe 4, making the structure of the cooling device more compact and facilitating the layout of the engine.

[0050] In one embodiment, the oil cooler 2 is provided with a component base, which can be extended to serve as the bottom plate 1 after extension. The extended part is used to install the EGR cooler 3, thus eliminating the need for an additional bottom plate 1, reducing the cost, further reducing the occupied space of the cooling device, and facilitating the layout of the engine in the engine compartment.

[0051] The above are only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cooling device, characterized in that, Comprising: A bottom plate, the bottom plate is provided with an inlet, an outlet and a fitting surface, and the fitting surface is used for cooperating with the end face of the engine; An oil cooler, the oil cooler is integrated on the bottom plate, and the oil cooler is provided with an oil passage and a first cooling channel communicated with the inlet; An EGR cooler, the EGR cooler is integrated on the bottom plate, and the EGR cooler is provided with an exhaust gas passage and a second cooling channel respectively communicated with the first cooling channel and the outlet; The coolant in the engine flows into the first cooling channel through the inlet, exchanges heat with the oil in the oil passage and then flows into the second cooling channel, exchanges heat with the exhaust gas in the exhaust gas passage, and then flows back to the engine from the outlet.

2. The cooling device according to claim 1, characterized in that The bottom plate is further provided with an oil inlet and an oil return port communicated with the oil passage of the engine, and the oil passage is respectively communicated with the oil inlet and the oil return port.

3. The cooling device according to claim 1, characterized in that The oil cooler includes a connecting plate and an oil cooler main body, the connecting plate is connected to the bottom plate, and the connecting plate is provided with a first liquid inlet, the oil cooler main body is connected to the connecting plate, and the oil cooler main body is provided with the oil passage and the first cooling channel, and the first cooling channel is communicated with the inlet through the first liquid inlet.

4. The cooling device according to claim 3, wherein The connecting plate and the bottom plate are integrally formed; or, The connecting plate and the bottom plate are connected by welding.

5. The cooling device according to claim 3, characterized in that, The top of the oil cooler main body is provided with a first liquid outlet communicated with the first cooling channel, the EGR cooler includes a housing, the housing is connected to the bottom plate, and the top of the housing is provided with a second liquid inlet, and the second liquid inlet is communicated with the first liquid outlet through a connecting pipe.

6. The cooling device according to claim 5, characterized in that, The housing and the bottom plate are integrally formed; or, The housing and the bottom plate are connected by welding.

7. The cooling device according to claim 5, characterized in that, The housing is further provided with a cavity, a second liquid outlet, an exhaust gas inlet and an exhaust gas outlet, the second liquid outlet is communicated with the second liquid inlet through the cavity to form the second cooling channel, the EGR cooler further includes a core flat tube assembly, the core flat tube assembly is arranged in the cavity, and the core flat tube assembly is respectively communicated with the exhaust gas inlet and the exhaust gas outlet to form the exhaust gas passage.

8. The cooling device according to claim 7, wherein, The cooling device further includes a first connecting flange and a second connecting flange, the first connecting flange is arranged at the exhaust gas inlet, and the second connecting flange is arranged at the exhaust gas outlet.

9. The cooling device according to any one of claims 1 to 8, characterized in that, The cooling device further includes a sealing member, one end of the sealing member abuts against the fitting surface, and the other end of the sealing member abuts against the end face of the engine.

10. A vehicle, characterized in that, Comprising a vehicle body, a plurality of wheels, an engine and the cooling device according to any one of claims 1 to 9, the plurality of wheels are respectively connected to the vehicle body, the engine is arranged on the vehicle body, and the cooling device is connected to the engine.

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