A corrugated radiator with variable structure for engineering machinery

Abstract

The present invention discloses a variable structure corrugated radiator for engineering machinery, belonging to the technical field of radiators, comprising fins, wherein the fins are corrugated with variable wavelengths, and a plurality of spoiler protrusions are arranged on the surface of the side facing the flow channel; the wavelength of the corrugated fins and the size of the spoiler protrusions vary with the thickness of the radiator. The present invention can make full use of the effect of the corrugated fins and the spoiler protrusions in strengthening the heat transfer of airflow, and effectively improve the heat exchange performance of the radiator without increasing too much flow resistance.

Description

Technical Field

[0001] The invention relates to the technical field of radiators, and in particular to a corrugated radiator for engineering machinery with a variable structure. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Radiator is a device used for heat dissipation, mainly used for heat dissipation of engines, hydraulic systems and other components in engineering machinery. Its main purpose is to dissipate the heat generated in the machinery through the radiator to ensure the normal operation of the machinery.

[0004] With the vigorous development of industry, the application of construction machinery is becoming more and more common, and the heat dissipation requirements for construction machinery are also becoming higher and higher. The corrugated radiator currently commonly used in construction machinery has been found through experiments and simulations to have an excellent heat dissipation effect in the first half of the radiator. As the temperature rises and the boundary layer thinning becomes worse during the heat dissipation process, the heat dissipation effect in the second half becomes worse. How to improve the heat dissipation efficiency without increasing the resistance too much has become the focus of research in this field. Summary of the invention

[0005] In view of the above problems, the present invention proposes a variable-structure corrugated radiator for engineering machinery, which can fully utilize the corrugated fins and spoiler protrusions to enhance airflow heat transfer, and effectively improve the heat exchange performance of the radiator without increasing too much flow resistance.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] The present invention provides a variable structure corrugated radiator for engineering machinery, comprising fins, wherein the fins are in the shape of a variable wavelength corrugated type, and a plurality of spoiler protrusions are provided on the surface of the fin facing the flow channel;

[0008] The wavelength of the corrugated fins and the size of the spoiler protrusions vary with the thickness of the radiator.

[0009] As a further implementation, the fin wave pattern and the spoiler protrusions are formed by rolling profiles.

[0010] As a further implementation, the wavelength of the fin meets the following requirements:

[0011] When the thickness of the heat sink is less than or equal to the first threshold, the wavelength of the fin is a first set value;

[0012] When the thickness of the heat sink is greater than the first threshold and less than or equal to the second threshold, the wavelength of the fins in the portion where the thickness of the heat sink is greater than the first threshold and less than or equal to the second threshold conforms to the following function:

[0013]

[0014] Where L is the wavelength of the fin, x is the length from the inlet along the gas inflow direction, and int is the rounding function;

[0015] When the thickness of the heat sink is greater than the second threshold, the wavelength of the fins at the portion where the thickness of the heat sink is greater than the second threshold is a second set value.

[0016] As a further implementation, the spoiler protrusion is cylindrical.

[0017] As a further implementation, the diameter of the cylinder meets the following requirements:

[0018] When the thickness of the heat sink is less than or equal to the second threshold, the diameter of the cylinder conforms to the function of the combination of the tangent hyperbola and the Peel curve:

[0019]

[0020] Among them, D o is the diameter, x is the distance from the inlet along the gas inflow direction, and int is the rounding function;

[0021] When the thickness of the heat sink is greater than the second threshold, the diameter of the cylinder of the portion of the heat sink where the thickness is greater than the second threshold is a third set value.

[0022] As a further implementation, the cylindrical spoiler protrusions are arranged in a specific manner on the surface of the fin, and the positions of the center points thereof conform to the following function:

[0023]

[0024] Where x is the distance from the inlet along the gas inflow direction, int is the rounding function, represents the center point of the cylinder of the i-th spoiler protrusion on the first side of the flow channel, Indicates the position of the cylindrical center point of the i-th spoiler protrusion on the second side of the flow channel.

[0025] As a further implementation method, the above function is used to ensure that the spacing between the spoiler protrusions on the same side of the same flow channel gradually decreases but does not touch each other, and the spoiler protrusions on different sides of the same flow channel are distributed in a staggered manner.

[0026] As a further implementation method, when the wave crest distance corresponding to the calculation result of the center position of the cylinder is less than the fourth set value, it moves backward by a distance of the fourth set value to ensure the normal arrangement of the spoiler protrusion.

[0027] As a further implementation, the fins are made of aluminum alloy.

[0028] As a further implementation, the material of the fin is copper alloy.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The variable-structure corrugated radiator for engineering machinery provided by the present invention improves the fixed-pitch fins of the traditional radiator into variable-pitch fins. The wavelength of the fins changes with the length of the airflow direction, which can enhance heat transfer. A plurality of cylindrical protrusions for turbulence are provided on the surface of the fins. The diameter and spacing of the turbulence protrusions also change with the length of the airflow direction, which can enhance the heat transfer effect on the air side and ensure the passage of airflow containing particles. It adapts to the harsh working environment of engineering machinery and improves the heat exchange performance of the radiator as a whole without increasing too much flow resistance, thereby achieving the effect of saving energy and reducing material usage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0032] Figure 1 A schematic diagram of the structure of a variable structure corrugated radiator for engineering machinery provided by the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the fin of the present invention after one side is unfolded.

[0034] Among them, 1. fins, 2. spoiler protrusions, 3. the first side of the flow channel, 4. the second side of the flow channel. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0037] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0038] Example 1

[0039] like Figure 1-2As shown, this embodiment provides a corrugated radiator for engineering machinery with a variable structure, including fins, the fin shape is a variable wavelength corrugated type, and the surface of the fin facing the flow channel is provided with a plurality of spoiler protrusions, and the wavelength of the corrugated fins and the size of the spoiler protrusions change with the thickness of the radiator. This design improves the fixed pitch fins of the traditional radiator into fins with variable pitch, so that the wavelength of the fins and the size of the spoiler protrusions change with the length of the airflow direction, which can enhance the heat transfer effect. Without increasing too much flow resistance, the heat exchange performance of the radiator is improved as a whole, which saves energy and reduces the use of materials.

[0040] The material of the fin is aluminum alloy or copper alloy, and the wave shape of the fin and the spoiler protrusions on the fin are rolled using the above-mentioned profiles.

[0041] In order to achieve the above technical effects, the wavelength of the fins of the corrugated heat sink in this embodiment must meet the following requirements:

[0042] When the thickness of the heat sink is less than or equal to the first threshold, the wavelength of the fin is a first set value;

[0043] When the thickness of the heat sink is greater than the first threshold and less than or equal to the second threshold, the wavelength of the fins in the portion where the thickness of the heat sink is greater than the first threshold and less than or equal to the second threshold conforms to the following function:

[0044]

[0045] Where L is the wavelength of the fin, x is the length from the inlet along the gas inflow direction, and int is the rounding function;

[0046] When the thickness of the heat sink is greater than the second threshold, the wavelength of the fins at the portion where the thickness of the heat sink is greater than the second threshold is a second set value.

[0047] There are multiple cylindrical protrusions on the surface of the fin for spoiling the flow. The diameter and spacing of the spoiling protrusions also change with the length of the airflow direction, which can enhance the heat transfer effect on the air side and ensure the passage of airflow containing particles, adapting to the harsh working environment of engineering machinery. In this embodiment, the spoiling protrusions are preferably cylindrical. The diameter of the cylindrical spoiling protrusions must meet the following requirements:

[0048] When the thickness of the heat sink is less than or equal to the second threshold, the diameter of the cylinder conforms to a function of a combination of a tangent hyperbola and a Peel curve, and the formula is as follows:

[0049]

[0050] Among them, D o is the diameter, x is the length from the inlet along the gas inflow direction, and int is the rounding function.

[0051] When the thickness of the heat sink is greater than the second threshold, the diameter of the cylinder of the portion of the heat sink where the thickness is greater than the second threshold is a third set value.

[0052] The cylindrical spoiler protrusions are arranged in a specific way on the fin surface, and the position of their center points conforms to the following function:

[0053]

[0054] Where x is the distance from the inlet along the gas inflow direction, int is the rounding function, represents the center point of the cylinder of the i-th spoiler protrusion on the first side of the flow channel, The above function ensures that the spacing between the spoilers on the same side of the same channel gradually decreases but does not touch each other, and the spoilers on different sides of the same channel are staggered.

[0055] When the wave crest distance corresponding to the calculated result of the center position of the cylinder is less than the fourth set value, it moves backward by a distance of the fourth set value to ensure the normal arrangement of the spoiler protrusion.

[0056] The technical solution of the present invention is described below with a specific example.

[0057] The size of the radiator can be set as length a = 400mm, width b = 200mm, thickness c = 200mm, the wavelength of the fin is L, the amplitude of the fin can be set as λ = 6mm, the spacing between adjacent fins can be set as d = 10mm, the thickness of the fin is δ = 0.2mm, and the diameter of the surface spoiler protrusion is D o , the center point of the spoiler protrusion on the first side of the flow channel is The center point of the spoiler protrusion on the second side of the flow channel is The height of the spoiler is h o =2mm.

[0058] The specific value of the wavelength L of the fin is:

[0059] When the thickness of the radiator is less than or equal to 50 mm, the wavelength L of the fin is 25 mm;

[0060] When the thickness of the radiator is greater than 50 mm and less than or equal to 200 mm, the wavelength L of the fins in the portion with a thickness greater than 50 mm and less than or equal to 200 mm is calculated using the following function formula:

[0061]

[0062] Wherein, L is the wavelength of the fin, x is the length from the inlet along the gas inflow direction, and int is the rounding function.

[0063] When the thickness of the radiator is greater than 200 mm, the wavelength L of the fins in the portion where the thickness is greater than 200 mm is 18 mm.

[0064] Diameter of the spoiler protrusion D o The specific values ​​are:

[0065] When the thickness of the radiator is less than or equal to 200 mm, the diameter D o The function calculation using the combination of tangent hyperbola and Peel curve is:

[0066]

[0067] Among them, D o is the diameter, x is the length from the inlet along the gas inflow direction, and int is the rounding function.

[0068] When the thickness of the radiator is greater than 200 mm, the diameter D of the spoiler protrusion at the part with a thickness greater than 200 mm is o The value is 4mm.

[0069] The center position of the spoiler protrusions on both sides of the flow channel is calculated by the following function:

[0070]

[0071] Where x is the distance from the inlet along the gas inflow direction, int is the rounding function, represents the center point of the cylinder of the i-th spoiler protrusion on the first side of the flow channel, Indicates the position of the cylindrical center point of the i-th spoiler protrusion on the second side of the flow channel.

[0072] The above function is used to ensure that the spacing h between the spoiler protrusions on the same side of the same flow channel gradually decreases but does not touch each other, and the spoiler protrusions on different sides are staggered to facilitate the passage of airflow containing sand and gravel. If the center position calculation result corresponds to a peak distance of less than 4 mm, it is moved backward by 4 mm to ensure the normal arrangement of the spoiler protrusions.

[0073] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0074] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A corrugated radiator for engineering machinery with a variable structure, characterized in that: It comprises a fin, wherein the fin has a variable wavelength corrugated shape, and a plurality of flow-disturbing protrusions are arranged on a surface of the fin facing the flow channel; The wavelength of the fins and the size of the spoiler protrusions vary with the thickness of the radiator; The wavelength of the fin meets the following requirements: When the thickness of the heat sink is less than or equal to the first threshold, the wavelength of the fin is a first set value; When the thickness of the heat sink is greater than the first threshold and less than or equal to the second threshold, the wavelength of the fins in the portion where the thickness of the heat sink is greater than the first threshold and less than or equal to the second threshold conforms to the following function: Where L is the wavelength of the fin, is the distance from the inlet along the gas inflow direction, int is the rounding function; When the thickness of the heat sink is greater than a second threshold value, the wavelength of the fins at a portion where the thickness of the heat sink is greater than the second threshold value is a second set value; The spoiler protrusion is cylindrical; The diameter of the cylinder meets the following requirements: When the thickness of the heat sink is less than or equal to the second threshold, the diameter of the cylinder conforms to the function of the combination of the tangent hyperbola and the Peel curve: in, is the diameter, is the distance from the inlet along the gas inflow direction, int is the rounding function; When the thickness of the heat sink is greater than the second threshold, the diameter of the cylinder of the portion of the heat sink where the thickness is greater than the second threshold is a third set value.

2. A variable structure corrugated radiator for engineering machinery according to claim 1, characterized in that: The fin wave pattern and the spoiler protrusion are formed by rolling the profile.

3. A corrugated radiator for engineering machinery with a variable structure as claimed in claim 1, characterized in that: The cylindrical spoiler protrusions are arranged in a specific manner on the fin surface, and the positions of their center points conform to the following function: in, is the distance from the inlet along the gas inflow direction, int is the rounding function, represents the center point of the cylinder of the i-th spoiler protrusion on the first side of the flow channel, Indicates the position of the cylindrical center point of the i-th spoiler protrusion on the second side of the flow channel.

4. A variable structure corrugated radiator for engineering machinery according to claim 3, characterized in that: The above function ensures that the spacing between the spoiler protrusions on the same side of the same flow channel gradually decreases but does not touch each other, and the spoiler protrusions on different sides of the same flow channel are distributed in a staggered manner.

5. A variable structure corrugated radiator for engineering machinery according to claim 3, characterized in that: When the wave crest distance corresponding to the calculated result of the center position of the cylinder is less than the fourth set value, it moves backward by a distance of the fourth set value to ensure the normal arrangement of the spoiler protrusion.

6. The variable structure corrugated radiator for engineering machinery according to claim 1, characterized in that: The material of the fin is aluminum alloy.

7. The variable structure corrugated radiator for engineering machinery according to claim 1, characterized in that: The material of the fin is copper alloy.

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