Gas cooler for improving thermal shock durability and cooling equipment

Abstract

The utility model provides a gas cooler and cooling equipment capable of improving thermal shock durability, which comprises a shell, a gas cooler, a cooling liquid cooler, a gas cooler and a cooling liquid cooler, and is characterized in that the shell is provided with a gas communication port and a cooling liquid communication port; the flat pipes are arranged at intervals in the thickness direction of the shell, the space, located outside the flat pipes and located in the shell, of each flat pipe is a cooling liquid flowing channel, the interior of each flat pipe is a gas transmission channel, and the cooling liquid flowing channels are isolated from the gas transmission channels; the fins are arranged in the flat pipes, and the ends, facing the input end of the gas to be cooled, of the fins are completely covered by the cooling liquid flowing channels in the thickness direction of the shell. The heat of the to-be-cooled gas is diffused into the cooling liquid flowing channel through the gas transmission channel, the gas cooling operation process is formed, the ends, facing the input end of the to-be-cooled gas, of the fins can be completely covered by the action range of the cooling liquid, and therefore the cooling efficiency is improved. The cooling device has the advantages of being long in service life, stable in cooling effect, high in use safety degree, capable of avoiding frequent maintenance and overhaul and the like.

Description

Technical Field

[0001] This utility model relates to the field of cooling equipment technology, specifically to a gas cooler and cooling equipment for improving thermal shock durability. Background Technology

[0002] In today's industrial and transportation sectors, gas coolers are critical heat exchange devices, and their performance and reliability are essential for ensuring the effective operation of engines and thermal systems. Existing gas cooler designs generally employ an alternating arrangement of gas lines and coolant to remove heat through coolant flow and thus cool the high-temperature gas. However, this traditional cooler design has a significant drawback: the coolant cannot completely cover the entire surface of the fins in the gas lines during circulation, especially at the air inlet end of the fins, where this problem is particularly pronounced.

[0003] Because the coolant failed to effectively cover the air inlet end of the fins, this area was directly exposed to the high-temperature gas environment without necessary cooling protection. This design flaw led to a significant increase in the temperature at the air inlet end, causing a series of problems. Most importantly, the high temperature caused a decline in the mechanical properties of the fin material in this area, accelerating its aging process. This, in turn, made the gas cooler face more severe material fatigue and thermal stress problems during long-term operation, potentially leading to a shortened service life, increased maintenance costs, and potential safety hazards. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem of thermal fatigue aging at the air inlet end of the fins of the gas cooler in the prior art, and to provide a gas cooler and cooling equipment with improved thermal shock durability.

[0005] To address the aforementioned technical problems, this utility model provides a gas cooler for improving thermal shock durability, comprising: a housing, wherein the housing has two gas inlets and two coolant inlets communicating with the outside, wherein the two gas inlets are respectively located at both ends of the housing in a first direction to provide input of gas to be cooled and output of cooled gas; a plurality of flat tubes, wherein the plurality of flat tubes are spaced apart along the thickness direction of the housing, the space located outside the flat tubes and inside the housing is a coolant flow channel, the interior of the flat tubes is a gas transmission channel, and the coolant flow channel and the gas transmission channel are isolated from each other; and a plurality of fins, wherein the plurality of fins are correspondingly disposed inside the plurality of flat tubes, and the end of the fin facing the input of the gas to be cooled is completely covered by the coolant flow channel in the thickness direction of the housing.

[0006] In one embodiment of this utility model, the distance between the end of the fin facing the input of the gas to be cooled and the end of the flat tube facing the input of the gas to be cooled is 6 to 8 mm.

[0007] In one embodiment of the present invention, the gas cooler for improving thermal shock durability further includes a limiting frame, which is disposed at two gas communication ports of the housing and is detachably connected to the housing. The limiting frame is provided with a plurality of snap-fit ​​grooves, and the ends of the plurality of flat tubes are correspondingly inserted into the plurality of snap-fit ​​grooves.

[0008] In one embodiment of the present invention, the limiting frame is detachably connected to the housing by a plurality of connectors, wherein the plurality of connectors are arranged around the edge of the limiting frame.

[0009] In one embodiment of this utility model, the gas cooler for improving thermal shock durability further includes a gas transmission pipeline and a coolant transmission pipeline. One end of the gas transmission pipeline is connected to a plurality of gas transmission channels, and one end of the coolant transmission pipeline is connected to the coolant flow channel.

[0010] In one embodiment of the present invention, the gas cooler for improving thermal shock durability further includes a transition member. The transition member is disposed at a gas communication port of the housing, with one side connected to the gas communication port and the other side connected to the gas transmission pipeline. The sidewall of the transition member is uniformly inclined from the housing toward the gas communication pipeline.

[0011] In one embodiment of the present invention, the gas cooler for improving thermal shock durability further includes a discharge component. The outer shell of the discharge component is connected to another gas communication port of the housing, and is provided with an exhaust port and a drain port. The exhaust port is connected to the gas transmission channel, and the drain port is connected to the coolant flow channel.

[0012] In one embodiment of the present invention, the gas cooler for improving thermal shock durability further includes at least one detachable component for detachable connection to an external structure.

[0013] In one embodiment of the present invention, the fins have a wavy structure in the first direction and a serpentine bending structure in the second direction.

[0014] This invention also provides a cooling device, which includes the aforementioned gas cooler for improving thermal shock durability.

[0015] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0016] The gas cooler and cooling equipment for improving thermal shock durability described in this utility model diffuses the heat of the gas to be cooled into the coolant flow channel through a gas transmission channel, forming a cooling process for the gas. The fins achieve a better cooling effect by increasing the heat exchange area, and the end facing the gas input is completely covered by the coolant's effective range, thus avoiding thermal fatigue at the end due to high temperature. Compared with conventional cooling technologies, this application has advantages such as long service life, stable cooling effect, high safety, and avoidance of frequent maintenance and repairs. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of a gas cooler that improves thermal shock durability in a preferred embodiment of this utility model;

[0019] Figure 2 yes Figure 1 A three-dimensional structural schematic diagram of a gas cooler that enhances thermal shock durability, shown from another perspective.

[0020] Figure 3 yes Figure 1 A three-dimensional structural diagram of the shell, flat tube, fins, and limiting frame in a gas cooler designed to improve thermal shock durability is shown.

[0021] Figure 4 yes Figure 1 A three-dimensional structural diagram of the flat tube in a gas cooler designed to improve thermal shock durability is shown.

[0022] Figure 5 It is part Figure 4 Schematic diagram of the cross-sectional structure at point AA;

[0023] Figure 6 yes Figure 1 A three-dimensional structural diagram of the fins in a gas cooler designed to improve thermal shock durability is shown.

[0024] Figure 7 This is a three-dimensional structural schematic diagram of a gas cooler that improves thermal shock durability in another embodiment of this utility model.

[0025] Explanation of reference numerals in the accompanying drawings: 100, housing; 200, flat tube; 300, fin; 400, limiting frame; 410, connector; 500, gas transmission line; 600, coolant transmission line; 700, transition piece; 710, guide part; 720, connecting part; 800, discharge part; 900, disassembly piece; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0027] Example 1

[0028] See Figure 1 and Figure 2 As shown, this embodiment provides a gas cooler for improving thermal shock durability, specifically an exhaust gas recirculation (EGR) cooler, which includes: a housing 100, the housing 100 having two gas inlets and two coolant inlets communicating with the outside, wherein the two gas inlets are respectively located at both ends of the housing 100 in a first direction X, for the input of gas to be cooled and the output of cooled gas, respectively; a plurality of flat tubes 200, the plurality of flat tubes 200 being arranged at intervals along the thickness direction of the housing 100, the space located outside the flat tubes 200 and inside the housing 100 being a coolant flow channel, the space inside the flat tubes 200 being a gas transmission channel, the coolant flow channel and the gas transmission channel being isolated from each other; a plurality of fins 300, the plurality of fins 300 being correspondingly arranged inside the plurality of flat tubes 200, and the end of the fins 300 facing the input of the gas to be cooled being completely covered by the coolant flow channel in the thickness direction of the housing 100.

[0029] The gas cooler with improved thermal shock durability described in this embodiment diffuses the heat of the gas to be cooled into the coolant flow channel through a gas transmission channel, forming a cooling process for the gas. The fins 300 achieve a better cooling effect by increasing the heat exchange area, and the end facing the gas input is completely covered by the coolant, thus avoiding thermal fatigue at the end due to high temperature. Compared to conventional cooling technologies, this application has advantages such as long service life, stable cooling effect, high safety, and avoidance of frequent maintenance and repairs.

[0030] It should be noted that, for ease of description, in this embodiment, the length direction of the gas cooler that improves thermal shock durability is defined as the first direction X, the width direction of the gas cooler that improves thermal shock durability is defined as the second direction Y, and the thickness direction of the gas cooler that improves thermal shock durability is defined as the third direction Z. The first direction X, the second direction Y, and the third direction Z are arranged perpendicularly to each other, and the first direction X and the second direction Y are located in the same plane.

[0031] In this embodiment, the housing 100 serves two purposes: firstly, it provides an installation and connection platform for other structures; secondly, it provides a flow contact space between the gas to be cooled and the coolant. In this embodiment, the housing 100 is preferably a cubic structure. Furthermore, in this embodiment, two gas ports are used for the input of the gas to be cooled and the output of the cooled gas, respectively, and another coolant port is used for the input and return of the coolant. The two gas ports are located at both ends of the housing 100 in the first direction X, thereby ensuring the longest contact time between the gas and the coolant. The two coolant ports are located at the top and bottom of the housing 100, respectively, to facilitate the flow and collection of the liquid. This utility model does not impose specific limitations on the specific location of the coolant ports.

[0032] Furthermore, the gas cooler for improving thermal shock durability in this embodiment also includes a gas transmission pipeline 500 and a coolant transmission pipeline 600. One end of the gas transmission pipeline 500 is connected to a plurality of gas transmission channels, and the other end is connected to an external high-temperature gas production device. Similarly, one end of the coolant transmission pipeline 600 is connected to the coolant flow channel, and the other end is arranged toward the coolant circulation device.

[0033] Furthermore, in order to achieve stable connection between the gas transmission pipeline 500 and the coolant transmission pipeline 600 and the housing 100, and to completely isolate the coolant flow channel from the gas transmission channel, the gas cooler with improved thermal shock durability in this embodiment also includes a transition member 700. The transition member 700 is disposed at a gas connection port of the housing 100, with one side connected to the gas connection port and the other side connected to the gas transmission pipeline 500. The sidewall of the transition member 700 is evenly inclined from the housing 100 toward the gas connection pipeline. Specifically, in this embodiment, the transition member 700 is preferably a funnel-shaped structure, which includes a guide portion 710 and a connecting portion 720 that are interconnected. The connecting portion 720 is preferably a frame with the same diameter as the gas inlet of the housing 100, and a sealing structure such as a sealing ring can be provided between the connecting portion 720 and the housing 100 to improve the sealing performance at the connection gap. The guide portion 710 is configured as a funnel-shaped structure, and its diameter decreases uniformly from the guide portion 710 toward the gas transmission pipeline 500, thereby improving the directional transmission effect of the gas to be cooled.

[0034] Corresponding to the transition piece 700, the gas cooler for improving thermal shock durability in this embodiment also includes a discharge piece 800. The outer shell of the discharge piece 800 is connected to another gas communication port of the housing 100, and it is provided with an exhaust port and a drain port. The exhaust port is connected to the gas transmission channel, and the drain port is connected to the coolant flow channel, thereby facilitating its connection to external gas collection equipment and cooling water circulation equipment. In addition, to further improve the stability of the free ends of the gas transmission pipeline 500 and the coolant transmission pipeline 600, the gas cooler for improving thermal shock durability in this embodiment also includes at least one detachable piece 900 for detachable connection to an external structure. The specific structural configuration and quantity can be adaptively adjusted according to actual usage requirements, and this utility model does not impose specific limitations in this regard.

[0035] See Figure 3 As shown, this embodiment includes four flat tubes 200. The four flat tubes 200 are also configured as pipe structures that communicate with the outside in their length direction. Furthermore, in order to achieve complete isolation between the internal space of the flat tubes 200 and the internal space of the housing 100, so as to avoid the mixing of coolant and gas to be cooled, both ends of the flat tubes 200 in this embodiment extend out of the housing 100 along the first direction X.

[0036] Furthermore, to achieve a stable connection between the flat tube 200 and the housing 100, and to ensure a sealing effect at both ends of the housing 100, the gas cooler for improving thermal shock durability in this embodiment also includes a limiting frame 400. The limiting frame 400 is disposed at the two gas inlets of the housing 100 and is detachably connected to the housing 100. The limiting frame 400 has multiple snap-fit ​​grooves, and the ends of the multiple flat tubes 200 are correspondingly inserted into the multiple snap-fit ​​grooves. Specifically, in this embodiment, the limiting frame 400 is surrounded by multiple crossbeams with snap-fit ​​grooves of identical diameter and shape to achieve tight support for the ends of the flat tubes 200. The limiting frame 400 is detachably connected to the housing 100 via multiple connectors 410. These connectors 410 are arranged around the edge of the limiting frame 400, thereby avoiding the problem of the flat tube 200 being difficult to thread and connect to the snap-fit ​​groove due to positional deviation. This also improves assembly efficiency. Actual experiments show that after setting the connectors 410, assembly efficiency can be increased by 50%, and the assembly defect rate reduced by 20%. Specifically, in this embodiment, the connectors 410 are preferably screws. In different embodiments, they can be configured as other structures that enable a detachable connection between the limiting frame 400 and the housing 100.

[0037] See Figures 4 to 6 As shown, in this embodiment, the fins 300 can greatly expand the surface area for heat exchange. When the hot fluid flows through the cooler, the presence of the fins 300 allows heat to be transferred to the surrounding cooling medium more quickly and evenly, thereby making the heat exchange process more efficient. Furthermore, in this embodiment, the fins 300 have a wavy structure in the first direction X and a serpentine bending structure in the second direction Y. This design further enhances the flowability of the gas to be cooled, enabling it to exhibit superior heat dissipation performance and mechanical support strength in limited application scenarios. In different embodiments, the structural configuration of the fins 300 can be adaptively adjusted according to actual usage requirements.

[0038] See Figure 5 As shown, in this embodiment, the distance L between the end of the fin 300 facing the input of the gas to be cooled and the end of the flat tube 200 facing the input of the gas to be cooled is 7mm. It should be noted that in conventional heat dissipation structures, the distance between the ends of the fin 300 and the flat tube 200 is set between 0 and 6mm. Therefore, the end of the fin 300 is unlikely to come into contact with the working range of the coolant flow channel, leading to a decrease in the mechanical properties of some fin material and accelerating its aging process. Based on this, in this embodiment, the overall length of the fin 300 can be reduced so that the distance L between its end and the end of the flat tube 200 is maintained at 6-8mm, thereby achieving a protective effect on the end of the fin 300.

[0039] Example 2

[0040] This embodiment provides another gas cooler for improving thermal shock durability, which is configured as a water-cooled intercooler (WCAC). Its specific operating principle is the same as that of Embodiment 1, see details below. Figure 7 As shown.

[0041] Example 3

[0042] This embodiment provides a cooling device, which includes the gas cooler for improving thermal shock durability as described in Embodiment 1.

[0043] In summary, the gas cooler and cooling equipment for improving thermal shock durability described in this utility model diffuses the heat of the gas to be cooled into the coolant flow channel through the gas transmission channel, forming a cooling process for the gas. The fins 300 achieve a better cooling effect by increasing the heat exchange area, and the end facing the gas input is completely covered by the coolant's effective range, thus avoiding thermal fatigue at the end due to high temperature. Compared to conventional cooling technologies, this application offers advantages such as long service life, stable cooling effect, high safety, and avoidance of frequent maintenance and repairs.

[0044] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A gas cooler that improves thermal shock durability, characterized by: The application relates to a heat shock durability-improved gas cooler. The shell is provided with two gas communication ports and two cooling liquid communication ports, wherein the two gas communication ports are arranged at the two ends of the shell in the first direction to respectively supply the input of the gas to be cooled and the output of the cooled gas. The fins are arranged in the multiple flat tubes, and the fins are completely covered by the cooling liquid flow channel in the thickness direction of the shell towards the end of the input of the gas to be cooled. The distance between the end of the input of the gas to be cooled and the end of the input of the gas to be cooled of the flat tube is 6-8 mm.

2. The gas cooler with improved thermal shock durability of claim 1, wherein: The heat shock durability-improved gas cooler further comprises a limiting frame arranged at the two gas communication ports of the shell and detachably connected to the shell, and the limiting frame is provided with multiple clamping grooves, and the ends of the multiple flat tubes are correspondingly arranged in the multiple clamping grooves.

3. The gas cooler of claim 1, wherein: The limiting frame is detachably connected to the shell through multiple connecting pieces, wherein the multiple connecting pieces are arranged around the edge of the limiting frame.

4. The gas cooler of claim 3, wherein: The heat shock durability-improved gas cooler further comprises a gas transmission pipeline and a cooling liquid transmission pipeline, one end of the gas transmission pipeline is communicated with the multiple gas transmission channels, and one end of the cooling liquid transmission pipeline is communicated with the cooling liquid flow channel.

5. The gas cooler of claim 1, wherein: The heat shock durability-improved gas cooler further comprises a transition piece arranged at one gas communication port of the shell, one side of the transition piece is communicated with the gas communication port, the other side is communicated with the gas transmission pipeline, and the side wall of the transition piece is uniformly inclined arranged by the shell towards the gas communication pipeline.

6. The gas cooler of claim 5, wherein: The heat shock durability-improved gas cooler further comprises a discharge piece, the shell of the discharge piece is connected to the other gas communication port of the shell, and the discharge piece is provided with an exhaust port and a water outlet, wherein the exhaust port is communicated with the gas transmission channel, and the water outlet is communicated with the cooling liquid flow channel.

7. The gas cooler of claim 5, wherein: The heat shock durability-improved gas cooler further comprises at least one detachable connecting piece to be detachably connected to an external structure.

8. The gas cooler of claim 1, wherein: The fins are arranged in a wave structure in the first direction and a serpentine bending structure in the second direction.

9. The gas cooler of claim 1, wherein: The application relates to a heat shock durability-improved gas cooler.

10. A cooling device, characterized by: ​

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