Engine body transition frame integrating water return and engine
By integrating the return water pipe and setting a vacuum insulation layer within the engine transition frame, the problem of excessively rapid temperature drop in the return water pipe under low-temperature conditions was solved, achieving water temperature stability and reliable engine operation, and improving the integration and compactness of the structure.
Patent Information
- Application Number
- CN202520615555.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-04-02
AI Technical Summary
In the existing technology, the way the return water pipe is set at the transition frame of the engine body causes the water temperature to drop too quickly when the ambient temperature is low, which affects the engine's combustion efficiency, wear and emissions performance.
The small circulation return water pipeline is integrated into the transition frame of the machine body, with inlet and outlet water inlet, and a return water channel is formed within the frame. The oil temperature is used for insulation, and combined with vacuum insulation layer and threaded connection, the pipeline path is shortened and the temperature drop is reduced.
It achieves stable water temperature in low-temperature environments, avoiding decreased combustion efficiency, increased wear, and excessive emissions, and improves the performance of the transition frame and the integration and compactness of the overall structure.
Smart Images
Figure CN223825134U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of engine cooling technology, specifically relating to an integrated water return engine body transition frame and engine. Background Technology
[0002] The engine block transition frame is a crucial transition structure connecting the engine block (cylinder block) and the oil pan. It belongs to the engine's lower support system and its main functions are to enhance rigidity, seal the crankcase, and support rotating components such as the crankshaft. It is typically a frame-type or ladder-shaped structure, cast or welded from high-strength metal (cast iron or aluminum alloy). The upper part is bolted to the bottom of the engine block (cylinder block) to form a crankcase seal, while the lower part connects to the oil pan, sealing the oil storage space. Its internal design includes oil passages to ensure unobstructed circulation in the lubrication system.
[0003] The engine block transition frame serves as a transitional connection between the oil pan and the engine block. Sometimes, the coolant in the large circulation loop needs to return a long distance from the radiator, and the engine block transition frame can act as a support and fixing point for the return water channel. The pipeline extends and bends from the outside of the engine block transition frame, and its path is relatively long. When the ambient temperature is low, it causes excessive heat dissipation of the water pump return water. Excessively low water temperature may lead to problems such as decreased combustion efficiency, increased wear, excessive emissions, and uneven thermal stress, affecting engine operation. In the existing technology, in order to reduce temperature drop, the pipeline is usually wrapped, which increases costs.
[0004] Therefore, it is necessary to further optimize the setting of the return water pipe at the transition frame of the machine body to avoid the water temperature dropping too quickly during return when the ambient temperature is low. Utility Model Content
[0005] This application provides an integrated body transition frame and engine, which integrates the small circulation return water pipe into the body transition frame, increases the application performance of the body transition frame, reduces the bending path of the return water pipe, and is beneficial for water circuit insulation.
[0006] The technical solution adopted in this application is as follows:
[0007] An integrated water return engine transition frame is provided. The engine transition frame connects the cylinder block and the oil pan. The engine transition frame is connected to the water pump through a water return pipeline. The engine transition frame includes an inlet and an outlet connected to the water return pipeline. The inlet and outlet are located on opposite sides of the engine transition frame. A water return channel is provided between the inlet and outlet within the engine transition frame.
[0008] In a preferred implementation of an integrated water return transition frame, the transition frame has an internal cavity with a water return channel located within the cavity.
[0009] In a preferred embodiment of an integrated water return transition frame, the two ends of the cavity are opened to form an inlet and an outlet, and the return water pipes are respectively located on both sides of the transition frame, connecting the inlet and outlet. The cavity directly forms a return water channel.
[0010] In a preferred embodiment of an integrated water return transition frame, the inner walls of the inlet and outlet are respectively provided with first threads, and the outer wall of the water return pipe is provided with a second thread that engages with the first threads, so that the water return pipe is connected to the water return channel.
[0011] In a preferred implementation of an integrated water return transition frame, the cavity includes a first cavity forming a water return channel and a second cavity coaxially arranged with the first cavity. The inner diameter of the second cavity is larger than that of the first cavity. The water return pipe passes through the first cavity, and the two ends of the first cavity form an inlet and an outlet, respectively.
[0012] In a preferred embodiment of an integrated water return body transition frame, a vacuum insulation layer is provided between the second cavity and the first cavity, and the two ends of the second cavity are connected to the outer wall of the corresponding water inlet or outlet, so that a sealed vacuum insulation layer is formed between the first cavity and the second cavity.
[0013] In a preferred implementation of an integrated water return transition frame, a sealing gasket is provided between the water inlet and outlet and the water return pipe.
[0014] In a preferred implementation of an integrated water return system transition frame, the water return channel is arranged along the radial direction of the transition frame.
[0015] In a preferred embodiment of an integrated water return transition frame, the inlet and outlet are integrally formed with the transition frame.
[0016] An engine includes a cylinder block, an oil pan, and a water pump, wherein the water pump is provided with a return water line as described above, and a body transition frame as described above is provided between the cylinder block and the oil pan.
[0017] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:
[0018] 1. This solution utilizes an inlet and outlet in the engine block transition frame, connected to the return water pipe, to return coolant to the water pump. This shortens the return water pipe path, reduces return time, and shortens the overall pipe length. Return water flows through a channel within the transition frame, utilizing engine oil temperature to ensure the coolant temperature doesn't drop too low, thus achieving water circuit insulation. Simultaneously, besides serving as a transition between the oil pan and the engine block, the transition frame, through its return water channel and insulation during the return process, improves its performance and facilitates further integration and compactness of the overall structure. This avoids problems such as decreased combustion efficiency, increased wear, excessive emissions, and uneven thermal stress that can result from excessively low coolant temperature, ensuring reliable engine operation.
[0019] 2. By setting a cavity within the transition frame of the machine body, a flow channel is provided for water flow. The cavity directly forms a return water channel. This method simplifies the processing and assembly of the transition frame of the machine body. The return water pipe is directly connected to both ends of the return water channel, i.e., directly to the inlet and outlet. The assembly method is simple and easy to set up.
[0020] 3. By setting up an air-proof cavity as a direct return water channel, the liquid enters the transition frame of the machine body directly from the return water pipe through the inlet and continues to flow within the transition frame. During the flow process, it is beneficial to use the engine oil to achieve more efficient heat transfer, thereby avoiding the return water temperature from dropping too quickly due to the external pipe, and thus achieving the return water insulation effect.
[0021] 4. By setting the first and second threads for mating connection, the return water pipe and the return water channel can be quickly connected. The coolant can directly enter the return water channel formed by the transition frame of the machine body. The return water channel is directly formed by the avoidance cavity, which realizes isolation and protection during the return water process.
[0022] 5. By setting up a first cavity and a second cavity, the return water pipe passes through the first cavity that forms the return water channel, that is, the return water pipe passes through the transition frame of the machine body. Furthermore, the vacuum insulation layer formed between the first cavity and the second cavity helps to insulate the return water pipe located in the first cavity, preventing the water temperature from dropping too quickly.
[0023] 6. By setting the return water channel along the radial direction of the machine body transition frame, the return water path is further shortened, the pipeline layout is shortened, the return water rate is increased, and the space occupation is reduced, improving space utilization and the utilization rate of existing components. Return water through the internal path of the machine body transition frame eliminates the need for insulation covering of the return water pipeline, reducing pipeline installation costs. Attached Figure Description
[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0025] Figure 1 This is a schematic diagram of the external structure of the transition frame of the body in one embodiment of the present invention;
[0026] Figure 2 This is a schematic diagram of the internal structure of the transition frame of the body in one embodiment of the present invention;
[0027] Figure 3 This is a schematic diagram of the return water channel in one embodiment of the present invention.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1-Transition frame of the machine body, 110-Water inlet, 120-Water outlet, 130-Return water channel, 140-First cavity, 150-Second cavity, 160-Vacuum insulation layer; 2-Return water pipeline. Detailed Implementation
[0030] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.
[0031] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.
[0032] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0034] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.
[0035] This application provides an integrated water return body transition frame 1, such as... Figures 1 to 3 As shown, the engine transition frame 1 connects the cylinder block and the oil pan. The engine transition frame 1 is connected to the water pump through the return water pipe 2. The engine transition frame 1 includes an inlet 110 and an outlet 120 connected to the return water pipe 2. The inlet 110 and the outlet 120 are respectively located on both sides of the engine transition frame 1. A return water channel 130 located inside the engine transition frame 1 is provided between the inlet 110 and the outlet 120.
[0036] This solution involves setting up an inlet 110 and an outlet 120 connected to the return water pipe 2 within the engine block transition frame 1. This allows coolant to return to the water pump via the engine block transition frame 1, shortening the path of the return water pipe 2, reducing return time, and reducing the overall pipe length. Return water is channeled through the return water channel 130 within the engine block transition frame 1, utilizing oil temperature to ensure the coolant temperature does not drop excessively, thus achieving water circuit insulation. Simultaneously, besides serving as a transition between the oil pan and the engine block, the engine block transition frame 1, through the return water channel 130, in conjunction with insulation during the return water process, improves the performance of the engine block transition frame 1 and facilitates further integration and compactness of the overall structure. This avoids problems such as decreased combustion efficiency, increased wear, excessive emissions, and uneven thermal stress that may result from excessively low water temperature, ensuring reliable engine operation.
[0037] Furthermore, the transition frame 1 of the body is provided with a cavity, and the return water channel 130 is located in the cavity.
[0038] Preferably, the cavity is directly formed by the body transition frame 1, and the water return channel 130 located in the cavity is integrally formed with the body transition frame 1, avoiding additional assembly and improving the overall structural stability. At the same time, it can avoid vibration friction and vibration noise that occur when multiple parts are combined.
[0039] In one embodiment, such as Figure 2 As shown, the two end openings of the cavity form an inlet 110 and an outlet 120. Return water pipes 2 are located on both sides of the transition frame 1, connecting the inlet 110 and outlet 120 respectively. The cavity directly forms a return water channel 130. By setting the cavity directly as the return water channel 130, it is equivalent to the liquid entering the transition frame 1 directly from the inlet 110 through the return water pipe 2 and continuing to flow within the transition frame 1. This flow facilitates efficient heat transfer using the engine oil, thus preventing the return water temperature from dropping too quickly due to external pipes, thereby achieving a return water insulation effect.
[0040] Furthermore, the inner walls of the inlet 110 and the outlet 120 are respectively provided with a first thread, and the outer wall of the return water pipe 2 is provided with a second thread that mates with the first thread, so that the return water pipe 2 is connected to the return water channel 130.
[0041] By setting the first and second threads for a mating connection, the return water pipe 2 and the return water channel 130 are quickly connected, and the coolant directly enters the return water channel 130 formed by the transition frame 1 of the body. The return water channel 130 is directly formed by the clearance cavity, which provides isolation and protection during the return water process.
[0042] It should be noted that the connection by setting the first thread and the second thread is only one connection method in this embodiment. In actual application, other pipe connection methods in the prior art can be used for the connection of the return water pipe 2 at the inlet 110 and the outlet 120, such as setting pipe clamps, clamps, etc., and no specific limitation is made.
[0043] In another embodiment, such as Figure 3 As shown, the cavity includes a first cavity 140 forming a return water channel 130 and a second cavity 150 coaxially arranged with the first cavity 140. The inner diameter of the second cavity 150 is larger than that of the first cavity 140. The return water pipe 2 passes through the first cavity 140. The two ends of the first cavity 140 form an inlet 110 and an outlet 120, respectively.
[0044] Furthermore, a vacuum insulation layer 160 is provided between the second cavity 150 and the first cavity 140. The two ends of the second cavity 150 are connected to the outer wall of the corresponding water inlet 110 or water outlet 120, so that a sealed vacuum insulation layer 160 is formed between the first cavity 140 and the second cavity 150.
[0045] By setting up a first cavity 140 and a second cavity 150, the return water pipe 2 passes through the first cavity 140 that forms the return water channel 130, that is, the return water pipe 2 passes through the transition frame 1 of the body. The vacuum insulation layer 160 formed between the first cavity 140 and the second cavity 150 is beneficial to the insulation of the return water pipe 2 located in the first cavity 140, and avoids the water temperature from dropping too quickly.
[0046] Furthermore, a sealing gasket is provided between the inlet 110, the outlet 120, and the return water pipe 2. The sealing gasket is made of a flexible material, which on the one hand enhances the connection stability between the return water pipe 2 and the inlet 110 and the outlet 120, and on the other hand, since the inner diameter of the return water channel 130 is larger than the inner diameter of the return water pipe 2 in this embodiment, the flexible sealing gasket helps to protect the return water pipe 2 from impacts, avoid pipe damage, and also prevent noise.
[0047] In a preferred embodiment, the return water channel 130 is arranged radially along the transition frame 1 of the body. By arranging the return water channel 130 radially along the transition frame 1 of the body, the return water path is further shortened, the pipeline setup is shortened, the return water rate is increased, and the space occupation is reduced, improving space utilization and the utilization rate of existing components. Since the return water is routed through the internal path of the transition frame 1 of the body, it is unnecessary to insulate the return water pipeline 2, thus reducing pipeline setup costs.
[0048] In a preferred embodiment, the inlet 110 and outlet 120 are integrally formed with the transition frame 1 of the machine body. This helps to reduce assembly steps, lower assembly difficulty, and improve the stability of components during the water return process.
[0049] An engine includes a cylinder block, an oil pan, and a water pump. The water pump is provided with a return water line 2 as in any of the above embodiments, and a body transition frame 1 as in any of the above embodiments is provided between the cylinder block and the oil pan.
[0050] For any parts not mentioned in this application, existing technologies may be used or referenced.
[0051] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.
[0052] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A body transition frame with integrated water return, wherein the body transition frame (1) connects the cylinder block and the oil pan, characterized in that, The transition frame (1) of the machine body is connected to the water pump through the return water pipe (2). The transition frame (1) of the machine body includes an inlet (110) and an outlet (120) connected to the return water pipe (2). The inlet (110) and the outlet (120) are respectively located on both sides of the transition frame (1). A return water channel (130) located in the transition frame (1) of the machine body is provided between the inlet (110) and the outlet (120).
2. The integrated water return transition frame according to claim 1, characterized in that, The transition frame (1) of the body is provided with an air-proof cavity, and the return water channel (130) is located in the air-proof cavity.
3. The integrated water return transition frame according to claim 2, characterized in that, The two ends of the cavity are opened to form the inlet (110) and the outlet (120). The return water pipe (2) is located on both sides of the transition frame (1) of the body and connects the inlet (110) and the outlet (120) respectively. The cavity directly forms the return water channel (130).
4. The integrated water return transition frame according to claim 3, characterized in that, The inner walls of the inlet (110) and the outlet (120) are respectively provided with a first thread, and the outer wall of the return water pipe (2) is provided with a second thread that mates with the first thread, so that the return water pipe (2) is connected to the return water channel (130).
5. The integrated water return system transition frame according to claim 2, characterized in that, The cavity includes a first cavity (140) forming the return water channel (130) and a second cavity (150) coaxially arranged with the first cavity (140). The inner diameter of the second cavity (150) is larger than that of the first cavity (140). The return water pipe (2) passes through the first cavity (140). The inlet (110) and outlet (120) are formed at both ends of the first cavity (140).
6. The integrated water return transition frame according to claim 5, characterized in that, A vacuum insulation layer (160) is provided between the second cavity (150) and the first cavity (140). The two ends of the second cavity (150) are connected to the outer wall of the corresponding water inlet (110) or water outlet (120) so that the vacuum insulation layer (160) is formed between the first cavity (140) and the second cavity (150).
7. The integrated water return system transition frame according to claim 5, characterized in that, A sealing gasket is provided between the water inlet (110), the water outlet (120), and the return water pipe (2).
8. The integrated water return transition frame according to claim 1, characterized in that, The return water channel (130) is arranged in the radial direction along the transition frame (1) of the body.
9. The integrated water return transition frame according to claim 1, characterized in that, The inlet (110) and the outlet (120) are integrally formed with the transition frame (1) of the body.
10. An engine, characterized in that, It includes a cylinder block, an oil pan and a water pump, wherein the water pump is provided with a return water pipeline (2) as described in any one of claims 1-9, and a body transition frame (1) as described in any one of claims 1-9 is provided between the cylinder block and the oil pan.