Heat exchange tube of automobile exhaust gas recirculation cooling system

Abstract

The utility model discloses a heat exchange tube of an automobile exhaust gas recirculation cooling system, and particularly relates to the technical field of exhaust gas recirculation cooling, which comprises a cooling tube component, and an auxiliary cooling component is mounted outside the cooling tube component in a penetrating manner. According to the heat exchange pipe of the automobile exhaust gas recirculation cooling system, the baffling effect on automobile exhaust gas is achieved under the action of the multiple first heat conduction baffle plates and the multiple second heat conduction baffle plates, the flowing path length of the automobile exhaust gas in the cooling pipe body is prolonged, the cooling time of the exhaust gas in the cooling pipe body is prolonged, the cooling effect on the automobile exhaust gas is improved, and the service life of the automobile exhaust gas is prolonged. Meanwhile, turbulent flow can occur when the waste gas flows and passes through the pipe body of the condensation pipe located in the cooling pipe body, and then the turbulent flow phenomenon is formed, so that the cooling effect is improved, condensate can be circularly supplied into the condensation pipe through external equipment, the condensate flows in the condensation pipe to achieve the auxiliary cooling effect, and the cooling effect is improved. The cooling pressure of the cooling pipe body is reduced, and the practicability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to exhaust gas recirculation cooling technical field, concretely is a kind of automobile exhaust gas recirculation cooling system heat exchange pipe. BACKGROUND

[0002] Automobile exhaust is an important factor of air pollution. Harmful gases discharged by automobile have replaced dust and become the main source of atmospheric pollution. Nitrogen oxide (NO) is the main component of automobile exhaust, and it has a long life in the atmosphere: it can generally maintain for two or three years. Therefore, it is a toxic gas with large quantity and strong accumulation. In recent years, with the increasing of environmental protection requirements (from European II to European WV), the automobile industry is constantly seeking high-performance exhaust gas recirculation cooler pipes.

[0003] Exhaust gas recirculation cooling technology is to introduce the exhaust gas discharged by automobile engine into the combustion chamber of engine, which reduces the content of ammonia and oxygen in the combustion chamber and lowers the temperature of the combustion chamber. Thus, the emission of nitrogen oxide (NO) is reduced, and the key of exhaust gas recirculation cooler is the heat exchange pipe in the cooler.

[0004] For example, the existing patent application No. 201520110932.1 discloses a heat exchange pipe for automobile exhaust gas recirculation cooling system, which comprises a pipe body. The cross section of the pipe body is flat and the two ends are circularly arc-shaped. The special feature is that a fin is arranged in the inner cavity of the pipe body along the longitudinal direction. The cross section of the fin is corrugated and forms a plurality of continuously arranged U-shaped grooves in the inner cavity of the pipe body. The U-shaped grooves are arranged longitudinally parallel to the pipe body, and the surface of the fin corresponding to the wave crest and the wave trough is respectively fixed to the inner wall of the pipe body on both sides. The beneficial effect is that it can ensure the smooth flow of high-temperature gas in the pipe body, effectively increase the heat dissipation area, significantly improve the heat exchange efficiency, and reduce the volume of the heat exchanger. It has the advantages of compact structure and light weight. It can effectively improve the service life and be widely used in exhaust gas recirculation coolers. It can make the exhaust emission of automobile engine meet the increasingly strict environmental protection standards, reduce the pollution of automobile exhaust to the atmosphere, and ensure the full combustion of fuel to achieve energy-saving effect.

[0005] However, the heat exchange pipe still has some deficiencies in actual use, such as the straight pipe design of the heat exchange pipe and the absence of any structure to increase the gas flow path. Therefore, the gas stays in the straight pipe for a short time, the heat exchange effect is poor, and the performance is general. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a heat exchange pipe for automobile exhaust gas recirculation cooling system to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of automobile exhaust gas recirculation cooling system heat exchange pipe, including cooling pipe component, auxiliary cooling assembly is installed outside the cooling pipe component and passes through;

[0008] The cooling pipe component includes a cooling pipe body, which is arranged in a serpentine shape. A curved cooling flow channel is formed in the cooling pipe body. A plurality of first heat-conducting baffles are fixedly inserted into the top of the pipe body of the cooling pipe body. A plurality of second heat-conducting baffles are fixedly inserted into the bottom of the pipe body of the cooling pipe body.

[0009] The auxiliary cooling assembly includes a condensing pipe, which is arranged in a serpentine shape. Water inlet and outlet are fixedly installed at both ends of the condensing pipe. The condensing pipe is fixedly embedded in the pipe body of the cooling pipe body.

[0010] Preferably, the plurality of first heat-conducting baffles and the plurality of second heat-conducting baffles are arranged in an inclined manner and are arranged in an interleaved manner.

[0011] Preferably, the cooling pipe body is provided with air inlet and outlet at both ends.

[0012] Preferably, the first heat-conducting baffles and the second heat-conducting baffles are spaced apart from the pipe body of the condensing pipe.

[0013] Preferably, the cooling pipe body is made of stainless steel.

[0014] Preferably, the condensing pipe, the first heat-conducting baffles and the second heat-conducting baffles are made of brass.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The automobile exhaust gas recirculation cooling system heat exchange pipe has the effect of flow deflection on automobile exhaust gas through the action of the plurality of first heat-conducting baffles and the plurality of second heat-conducting baffles, prolongs the flow path length of automobile exhaust gas in the cooling pipe body, prolongs the cooling time of exhaust gas in the cooling pipe body, improves the cooling effect of automobile exhaust gas, and when exhaust gas flows through the pipe body of the condensing pipe located in the cooling pipe body, turbulence occurs, and chaotic flow phenomenon is formed, thereby improving the cooling effect. The condensing liquid in the condensing pipe can be circulated by external equipment, and the flow of condensing liquid in the condensing pipe can have an auxiliary cooling effect, which reduces the cooling pressure of the cooling pipe body and has higher practicality. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0018] Figure 2It is the top view structure schematic diagram of the utility model;

[0019] Figure 3 It is the cooling pipe assembly three-dimensional structure schematic diagram of the utility model;

[0020] Figure 4 It is the auxiliary cooling assembly three-dimensional structure schematic diagram of the utility model.

[0021] In the drawing: 1, cooling pipe assembly;101, cooling pipe body;102, air inlet;103, air outlet;104, No. 1 heat-conducting baffle;105, No. 2 heat-conducting baffle;2, auxiliary cooling assembly;201, condenser pipe;202, water inlet;203, water outlet. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] As Figures 1-4 Indicated, the utility model provides a technical scheme: including cooling pipe assembly 1, the outside of cooling pipe assembly 1 is installed with auxiliary cooling assembly 2 through;

[0024] Cooling pipe assembly 1 includes cooling pipe body 101, cooling pipe body 101 is arranged in the shape of snake, the curved cooling flow channel is set up in cooling pipe body 101, the top of the pipe body of cooling pipe body 101 is fixedly inserted with a plurality of No. 1 heat-conducting baffle 104, the bottom of the pipe body of cooling pipe body 101 is fixedly inserted with a plurality of No. 2 heat-conducting baffle 105;

[0025] Auxiliary cooling assembly 2 includes condenser pipe 201, condenser pipe 201 is arranged in the shape of snake, the both ends of condenser pipe 201 are fixedly installed with water inlet 202 and water outlet 203 respectively, condenser pipe 201 is fixedly embedded on the pipe body of cooling pipe body 101.

[0026] In the embodiment, a plurality of No. 1 heat-conducting baffles 104 and a plurality of No. 2 heat-conducting baffles 105 are all arranged in the shape of inclination, and No. 1 heat-conducting baffle 104 and No. 2 heat-conducting baffle 105 are arranged in the shape of stagger, under the action of a plurality of No. 1 heat-conducting baffles 104 and a plurality of No. 2 heat-conducting baffles 105, the automobile exhaust is folded, the path length of automobile exhaust in cooling pipe body 101 is lengthened, the cooling time of exhaust in cooling pipe body 101 is lengthened, and the cooling effect of automobile exhaust is improved.

[0027] At the same time, the two ends of the cooling pipe body 101 are fixedly provided with the air inlet pipe 102 and the air outlet pipe 103, respectively, and the automobile exhaust enters the cooling pipe body 101 from the air inlet pipe 102 and flows out of the cooling pipe body 101 from the air outlet pipe 103.

[0028] The first heat-conducting baffle plate 104 and the second heat-conducting baffle plate 105 are both provided with a gap between the pipe body of the condensing pipe 201, and the first heat-conducting baffle plate 104 and the second heat-conducting baffle plate 105 can form a bent channel with the pipe body of the condensing pipe 201, which not only increases the flow path length of the automobile exhaust in the cooling pipe body 101 but also causes turbulence, thereby forming a turbulent flow phenomenon, so that the cooling effect is improved.

[0029] The cooling pipe body 101 is made of stainless steel material, and stainless steel has the advantages of high pressure resistance, less fouling, less oil stringing and easy cleaning compared with copper pipe.

[0030] The condensing pipe 201, the first heat-conducting baffle plate 104 and the second heat-conducting baffle plate 105 are all made of brass material, and brass has good heat conductivity and corrosion resistance and is suitable for high-temperature environment.

[0031] In use, the automobile exhaust enters the cooling pipe body 101 from the air inlet pipe 102, and after entering, it is first subjected to the effect of the first heat-conducting baffle plate 104 and the second heat-conducting baffle plate 105 to deflect the automobile exhaust, thereby prolonging the flow path length of the automobile exhaust in the cooling pipe body 101, prolonging the cooling time of the exhaust in the cooling pipe body 101 and improving the cooling effect of the automobile exhaust, and at the same time, the exhaust flow passes through the pipe body of the condensing pipe 201 in the cooling pipe body 101, causing turbulence and thereby forming a turbulent flow phenomenon, thereby improving the cooling effect, and the condensing pipe 201 can be supplied with circulating condensate through an external device, and the condensate flowing in the condensing pipe 201 can have an auxiliary cooling effect, thereby reducing the cooling pressure of the cooling pipe body 101 and improving the practicability.

[0032] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas recirculation cooling system heat exchange tube for an automobile, characterized by The utility model relates to a cooling pipe assembly (1), the outside of cooling pipe assembly (1) is installed with auxiliary cooling assembly (2) through the whole. The cooling pipe assembly (1) includes a cooling pipe body (101) which is arranged in a serpentine shape, a curved cooling flow channel is formed in the cooling pipe body (101), a plurality of first heat-conducting baffles (104) are fixedly connected to the top of the pipe body (101), and a plurality of second heat-conducting baffles (105) are fixedly connected to the bottom of the pipe body (101). The auxiliary cooling assembly (2) includes a condensing pipe (201) which is arranged in a serpentine shape, water inlets (202) and water outlets (203) are fixedly connected to the two ends of the condensing pipe (201), and the condensing pipe (201) is fixedly embedded in the pipe body (101).

2. The heat exchange tube of claim 1, wherein The first heat-conducting baffles (104) and the second heat-conducting baffles (105) are arranged in an inclined manner and are arranged in an interlaced manner.

3. The heat exchange tube of claim 1, wherein the tube is made of a material selected from the group consisting of stainless steel, titanium, and alloys thereof. Air inlets (102) and air outlets (103) are fixedly connected to the two ends of the cooling pipe body (101).

4. The heat exchange tube of claim 1, wherein The first heat-conducting baffles (104) and the second heat-conducting baffles (105) are arranged in an inclined manner and are arranged in an interlaced manner.

5. The heat exchange tube of claim 1, wherein The cooling pipe body (101) is made of stainless steel.

6. The heat exchange tube of claim 1, wherein The condensing pipe (201), the first heat-conducting baffles (104) and the second heat-conducting baffles (105) are made of brass.

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