KR-20260063345-A - HYBRID OFFSET PERFORATED FIN FOR ENHANCING HEAT TRANSFER PERFORMANCE AND HEAT EXCHANGER INCLUDING THE SAME

KR20260063345AKR 20260063345 AKR20260063345 AKR 20260063345AKR-20260063345-A

Abstract

The objective of the present invention is to provide a hybrid offset hole fin and a heat exchanger including the same, for improving the heat transfer performance of a heat exchanger by increasing the turbulence of the fluid flowing inside the heat exchanger by installing holes in each of the side surfaces connecting the upper and lower surfaces of a strip in which a structure arranged alternately at regular intervals is repeatedly formed inside the heat exchanger. To achieve the above objective, a hybrid offset hole fin for improving heat transfer performance is characterized by being configured in the form of a thin plate, comprising a strip arranged at a predetermined uniform interval, and a hole installed on a side connecting the upper surface and the lower surface of the strip.

Inventors

김택근
최태승

Assignees

한국기술교육대학교 산학협력단

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (5)

Strips configured in the form of thin sheets and arranged at predetermined uniform intervals; and Characterized by including a hole installed on the side connecting the upper and lower surfaces of the above strip. Hybrid offset hole fin for improving heat transfer performance.
In Article 1, The above strip is, Characterized by a structure arranged offset at regular intervals that is repeated, Hybrid offset hole fin for improving heat transfer performance.
In Article 1, The above hole is, Characterized by being installed on each of the two sides of the strip connecting the upper surface and the lower surface. Hybrid offset hole fin for improving heat transfer performance.
In Article 1, The above hole is, Characterized by being installed on the side of the strip located perpendicular to the direction in which the fluid flows. Hybrid offset hole fin for improving heat transfer performance.
A heat exchanger comprising a hybrid offset hole fin for improving heat transfer performance according to any one of claims 1 to 4.

Description

Hybrid offset perforated fin for enhancing heat transfer performance and heat exchanger including the same The present invention was devised (conceived) as a result of the research on the "Development of a Numerical Model of a Composite Heat Exchanger for Eco-friendly Vehicles through Ideal Flow Analysis Techniques" of the 3rd stage Industry-Academic Cooperation Leading University Development Project (LINC 3.0), which was supported by funding from the Ministry of Education and the National Research Foundation of Korea. The objective of the present invention is to provide a hybrid offset hole fin and a method for manufacturing the same, which improves the heat transfer performance of a conventional offset strip fin and reduces the pressure applied to the offset strip fin. A heat exchanger is a device that transfers heat between two or more fluids. The primary purpose of a heat exchanger is to efficiently transfer heat from one fluid to another to save energy or maintain a desired temperature. Typically, heat exchangers operate using various heat transfer methods such as convection, conduction, and radiation. The most common methods among them are convection and conduction, where the hot fluid loses heat and the cold fluid gains heat; thus, in this process, the two fluids are not directly mixed, and heat is exchanged while physically separated. Heat exchangers with this type of operation are widely used in industrial fields such as heating, air conditioning, power generation, waste heat recovery, and chemical processes. There are many types of heat exchangers, including shell and tube heat exchangers, plate heat exchangers, and fin-tube heat exchangers. Among them, fin-type heat exchangers, which have an expanded heat transfer surface area, are widely used because they have a simple structure and are easy to manufacture. Figure 1 is a drawing showing the structure of a conventional offset strip fin. Offset strip fins are one of the fins used in heat exchangers and are a structure designed to increase heat transfer performance. An offset strip fin has a structure in which thin, narrow metal plates are arranged at regular intervals and then offset from each other, and when air or fluid flows, the flow is frequently obstructed, causing the fluid to form turbulence. As a result, heat transfer between the fin and the fluid is improved, and the heat transfer surface area is increased, significantly improving the performance of the heat exchanger. However, the structure of such conventional offset strip fins has the problem of increasing fluid turbulence while simultaneously applying high pressure to the structure. Figure 1 is a drawing showing the structure of a conventional offset strip fin. FIG. 2 is a drawing showing a hybrid offset hole fin for improving heat transfer performance according to an embodiment of the present invention. Before describing the present invention in detail, it should be understood that the terms and words used in this specification should not be interpreted as being limited to their ordinary or dictionary meanings, and that the inventor of the present invention may appropriately define and use the concepts of various terms to best describe their invention, and furthermore, that these terms and words should be interpreted in a meaning and concept consistent with the technical spirit of the present invention. In other words, it should be understood that the terms used in this specification are used merely to describe preferred embodiments of the present invention and are not intended to specifically limit the content of the present invention, and that these terms are defined in consideration of various possibilities of the present invention. In addition, it should be noted that in this specification, singular expressions may include plural expressions unless the context clearly indicates a different meaning, and that even if they are expressed in a similarly plural form, they may include a singular meaning. Throughout this specification, where it is stated that a component "includes" another component, unless specifically stated otherwise, this may mean that it does not exclude any other component but may include any other component. Furthermore, it should be noted that in cases where it is stated that a component "exists inside or is installed in connection with" another component, this component may be installed in direct connection or contact with the other component, or it may be installed at a certain distance apart, and in the case where it is installed at a certain distance apart, there may be a third component or means for fixing or connecting the component to the other component, and a description of this third component or means may be omitted. On the other hand, if it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there is no third component or means. Likewise, other expressions describing the rela