Device for preventing cooler from being blocked

Abstract

The utility model discloses a device for preventing a cooler from being blocked, which comprises a shell, a plurality of groups of flat pipes are arranged in the shell, and a plurality of fins are equidistantly mounted in inner cavities of the flat pipes; the left side of the shell is provided with the gas outlet base, the right side of the shell is provided with the gas inlet base, and the gas inlet base is designed to be in a horn mouth shape, so that gas can be conveniently transited into a square pipe channel of the shell from a round opening of the valve, uniform distribution of gas flow in the shell is guaranteed, and excessive waste gas is prevented from entering individual flat pipes to block fins; the corrugated folds are arranged on the outer surfaces of the fins, waste gas channels are conveniently formed by the waves, waste gas is discharged, the wave length of the corrugated folds is equal to 6-7 times of the wave height, the wave width of the corrugated folds is equal to 2-3 times of the wave pitch, and the length of the fins is larger than or equal to 6 times of the fin width, so that soot in the waste gas can be prevented from being accumulated in the fins and blocking the fins.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engines, in particular to a device for preventing coolers from being blocked. Background Art

[0002] With increasingly stringent emission regulations, engines are being driven to continuously upgrade their technology in terms of energy conservation and environmental protection in order to meet the requirements of emission regulations. EGR (Exhaust Gas Recirculation) technology is more effective in reducing NOx emissions. Because it uses the exhaust gas recirculation method to introduce part of the combustion exhaust gas from the exhaust pipe into the intake pipe to mix with fresh air, it reduces the oxygen content in the mixture and increases the specific heat capacity of the mixture, thereby achieving the purpose of reducing NOx emissions. At the same time, it has the advantages of minimal changes to the original model and greater design freedom.

[0003] Because the exhaust gas temperature discharged by the engine is relatively high, and the engine intake system has certain temperature restrictions, when the utilization rate of EGR is gradually increased, the requirements for the EGR cooler are also getting higher and higher. It is necessary to avoid cooler blockage, which causes a decrease in heat exchange efficiency and fails to meet the temperature requirements of the engine intake system. However, due to the complexity of manufacturing the existing EGR cooler and the accumulation of soot and condensed water in the exhaust gas, the EGR cooler is prone to blockage, resulting in insufficient heat exchange efficiency of the EGR cooler and abnormal engine operation. Therefore, it is necessary to provide a new device to prevent cooler blockage to solve the above technical problems. Utility Model Content

[0004] The object of the present invention is to provide a device for preventing a cooler from being blocked, so as to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the utility model adopts the following technical solution: a device for preventing cooler blockage, comprising: a shell, in which a plurality of groups of flat tubes are arranged, and the inner cavity of the flat tubes is equidistantly provided with a plurality of fins;

[0006] An air outlet base is installed on the left side of the shell, and an air inlet base is installed on the right side of the shell. The outer surface of the fin is provided with corrugated folds, and the corrugated folds of the fin are a wave height equal to ~ times the wavelength, a wave width equal to ~ times the wave pitch and a fin length greater than or equal to times the fin width. By providing a shell, it is convenient to protect the components of this device. By providing flat tubes and fins, it is convenient to have a circulation cooling effect on the engine. By providing an air outlet base and an air inlet base, it is convenient to circulate the internal gas of this device, so that this device can effectively dissipate heat. By using the wavelength and wave height, it is convenient to control the turbulence intensity of the exhaust gas. By providing the wave width and wave pitch, it is convenient to control the exhaust gas channel area. By providing the fin width and fin length, it is convenient to control the overall heat exchange area of ​​the cooler.

[0007] As a further description of the above technical solution: the air inlet base and the shell are connected to form an air inlet channel, and the air outlet base and the shell are connected to form an air outlet channel, which facilitates air circulation inside the device and ensures the effectiveness of heat dissipation of the device.

[0008] As a further description of the above technical solution: the air outlet base and the air inlet base are set to a trumpet shape, which facilitates the transition of gas from the circular mouth of the valve to the square tube channel of the shell, ensures uniform airflow distribution in the shell, and avoids excessive exhaust gas entering individual flat tubes and clogging the fins.

[0009] The utility model provides a device for preventing cooler blockage, which has the following beneficial effects:

[0010] 1. The air inlet base is designed in a trumpet shape to facilitate the transition of gas from the circular port of the valve to the square tube channel of the shell, ensuring uniform airflow distribution in the shell and preventing excessive exhaust gas from entering individual flat tubes and clogging the fins.

[0011] 2. The outer surface of the fin is provided with corrugated folds, which facilitate the formation of exhaust gas channels by these waves, so that the exhaust gas can be discharged. The corrugated folds have a wave height equal to 6 to 7 times the wavelength, a wave width equal to 2 to 3 times the wave pitch, and a fin width greater than or equal to 6 times the fin length, which can prevent the soot in the exhaust gas from accumulating in the fins and clogging the fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of a device for preventing cooler blockage proposed by the present invention;

[0013] Figure 2 It is a schematic diagram of the structure analyzed in this utility model.

[0014] Legend:

[0015] 1. Shell; 2. Flat tube; 3. Fin; 4. Air outlet base; 5. Air inlet base; A. Wavelength; B. Wave height; C. Wave width; D. Wave distance; E. Fin width; F. Fin length. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Example 1, reference Figure 1The utility model discloses a device for preventing cooler blockage, which can solve the problems of the complexity of manufacturing existing EGR coolers, the accumulation of soot and condensed water in the exhaust gas, and the clogging failure of the EGR cooler, which leads to insufficient heat exchange efficiency of the EGR cooler and abnormal engine operation. The device comprises a housing 1, wherein a plurality of groups of flat tubes 2 are arranged in the housing 1, and a plurality of fins 3 are evenly installed in the inner cavity of the flat tubes 2;

[0018] An air outlet base 4 is installed on the left side of the shell 1, and an air inlet base 5 is installed on the right side of the shell 1. The outer surface of the fin 3 is provided with corrugated folds, and the corrugated folds of the fin 3 are wave height B equal to 6 to 7 times the wavelength A, wave width C equal to 2 to 3 times the wave distance D, and fin length F is greater than or equal to 6 times the fin width E.

[0019] Working principle: The shell 1 is convenient for protecting the components of the device, the flat tube 2 and the fin 3 are convenient for circulating and cooling the engine, and the air outlet base 4 and the air inlet base 5 are convenient for circulating the internal gas of the device, so that the device can effectively dissipate heat.

[0020] Example 2, refer to Figure 1 and Figure 2 In this embodiment, the complexity of manufacturing the existing EGR cooler is solved, and the cooler is affected by the accumulation of soot and condensed water in the exhaust gas, and the EGR cooler is prone to blockage failure, resulting in insufficient heat exchange efficiency of the EGR cooler and abnormal engine operation. The device for preventing cooler blockage also includes an air intake base 5 and a shell 1 connected to form an air intake channel, an air outlet base 4 and a shell 1 connected to form an air outlet channel, and the air outlet base 4 and the air intake base 5 are arranged in a trumpet shape.

[0021] Working principle: When the device is used for cooling, the exhaust gas from the engine flows out of the outlet base 4 and passes through the air inlet base 4 and the air outlet base 5 designed into a trumpet shape. It is convenient for gas to transition from the circular mouth of the valve to the square tube channel of the shell 1, ensuring uniform airflow distribution in the shell 1, avoiding excessive exhaust gas entering individual flat tubes 2 and clogging fins 3, and controlling the turbulence intensity of the exhaust gas through wavelength A and wave height B. By setting wave width C and wave pitch D, it is convenient to control the exhaust gas channel area. By setting fin width E and fin length F, it is convenient to control the overall heat exchange area of ​​the cooler. By using corrugated folds with wave height B equal to 6 to 7 times of wavelength A, wave pitch D equal to 2 to 3 times of wave width C and fin length F greater than or equal to 6 times of fin width E, it can avoid soot in the exhaust gas from accumulating in fin 3 and clogging fin 3. By designing and matching reasonable wave pitch D, wavelength A, wave width C and wave height B, as well as the flow channels of the inlet and outlet base of the EGR cooler, the purpose of avoiding soot in the exhaust gas from depositing in the wave trough and clogging fin 3 is achieved.

[0022] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0023] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for preventing cooler blockage, characterized in that: include: A shell (1), wherein a plurality of groups of flat tubes (2) are arranged in the shell (1), and a plurality of fins (3) are equidistantly installed in the inner cavity of the flat tubes (2); An air outlet base (4) is installed on the left side of the shell (1), and an air inlet base (5) is installed on the right side of the shell (1). The outer surface of the fin (3) is provided with corrugated folds, and the corrugated folds of the fin (3) are equal to 6 to 7 times the wave height (B), the wave width (C) is equal to 2 to 3 times the wave distance (D), and the fin length (F) is greater than or equal to 6 times the fin width (E).

2. The device for preventing cooler blockage according to claim 1, characterized in that: The air inlet base (5) and the shell (1) are connected to form an air inlet channel, and the air outlet base (4) and the shell (1) are connected to form an air outlet channel.

3. The device for preventing cooler from clogging according to claim 1, characterized in that: The air outlet base (4) and the air inlet base (5) are configured to be trumpet-shaped.

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