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Split fin for a heat exchanger

A technology of heat exchangers and heat sinks, applied in heat exchange equipment, indirect heat exchangers, heat exchanger types, etc., can solve problems such as reducing the surface area of ​​heat sinks, reducing efficiency, and increasing gas thermal resistance

Inactive Publication Date: 2008-12-24
MODINE MFG CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While it is believed that such configurations serve their intended purpose, the fact that material is removed from the heat sink reduces the surface area of ​​the heat sink
It will be clear from Fourier's law that a reduction in area reduces heat transfer, and thus makes the slots proposed by the aforementioned patentees less effective than the expected reduction in heat transfer through the fins from one side of the heat exchanger to the other. While small, it also increases the thermal resistance on the gas side, reducing the efficiency of heat exchange from the fluid contained inside the conduit to the gas passing through the fins

Method used

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  • Split fin for a heat exchanger
  • Split fin for a heat exchanger
  • Split fin for a heat exchanger

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Embodiment Construction

[0026] The invention will be described below primarily in connection with a refrigeration system, which will also include a heat pump system. The field of description will be heating / cooling systems for vehicles, but it should be noted that the invention is not limited to vehicle systems. The invention will also be described with respect to gas coolers in which a gas, typically air, is used to cool and / and condense a fluid such as a refrigerant; and the term "gas cooler" will include condensers and coolers that cool the refrigerant without condensing it. But the invention is also applicable to heat exchangers having a large number of cores, each of which is intended to receive a different working fluid, for example for the refrigerant from a gas cooler and the coolant for an engine or similar Multi-core heat exchanger for cooling. Similarly, although the invention will be described with respect to a gas, typically air, used to cool another working fluid inside a heat exchang...

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Abstract

Where heat conduction occurs between rows of conduits arranged from the front side to the rear of the heat exchanger and having a common cooling fin (42), by making the cooling fins (42) adjoin adjacent conduits in each row On the extension section, each cooling fin (42) is shared by each row of pipes (22, 24, 26), and the efficiency of the heat exchanger is improved. A heat flow interrupter (56, 58) is positioned in each fin (42) in alignment with the gap (27) between the conduit extensions (22, 24, 26). Each heat flow blocking means (56, 58) is defined by a slot (62) extending completely through the fin (42) and is characterized in that it is not necessary to remove any form of the fin (42) at the slot (62). )s material.

Description

technical field [0001] The present invention relates to a slotted fin configuration for use in heat exchangers, particularly for heat exchangers having multiple rows of conduits extending from the front side to the rear side, where it is desired to reduce the flow rate from one to the other through the fins. Heat transfer occurs from one row of tubes to another row of tubes. Background technique [0002] There are a variety of situations where it is necessary to limit the heat transfer that occurs between the front and rear sides of the heat exchanger. This situation is characterized by the temperature of the fluid entering the heat exchanger being significantly different than the temperature of the fluid exiting the heat exchanger. One such application is in heat exchangers in refrigeration systems, such as condensers, or more specifically, gas coolers and refrigeration systems utilizing transcritical refrigerants. CO 2 is an example of such a refrigerant. [0003] Anot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F1/12F28F1/32F28D1/04F28D1/047F28F1/02F25B39/00F25B39/04F28F13/00
CPCF25B39/04F28D1/0478F28D2021/0073F28D2021/0084F28F1/025F28F1/128F28F13/00F28D1/04F28D1/047F28F1/12F28F1/32
Inventor 斯蒂芬·梅默里詹姆斯·C·罗杰斯格雷戈里·G·休斯弗兰克·M·格里珀里菲夸特·奇马威廉·马库森肯尼斯·里特
Owner MODINE MFG CO