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Internal Heat Exchanger for an Air Conditioning System

a heat exchanger and air conditioning technology, applied in the direction of heat exchange apparatus, tubular elements, stationary tubular conduit assemblies, etc., can solve the problems of increasing the heat exchange capacity maintaining the overall length of the heat exchanger at the same time, and achieve the effect of preventing leakag

Inactive Publication Date: 2014-06-05
TI AUTOMOTIVE ENG CENT HEIDELBERG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes an internal heat exchanger with a compact design that has a high heat transfer capacity. The first flow channel has a meandering configuration that increases the effective tube length for heat exchange while keeping the overall length low. The line structure includes heat conducting ribs that improve heat transfer by absorbing the heat emitted and improving the outer surface of the line structure. The heat conducting ribs are integrated with the structure forming the first flow channel to simplify installation. A gap is formed between the heat conducting ribs and the inner wall of the outer tube to further enhance heat transfer. The heat conducting ribs extend through the second flow channel, creating channels for effective heat transfer while still being easy to install.

Problems solved by technology

As a result, the heat transfer capacity of the heat exchanger increases, while its overall length simultaneously remains low.

Method used

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  • Internal Heat Exchanger for an Air Conditioning System
  • Internal Heat Exchanger for an Air Conditioning System
  • Internal Heat Exchanger for an Air Conditioning System

Examples

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Embodiment Construction

[0027]FIG. 1 presents a schematic view of the air conditioning circuit of a mobile air conditioning system 2, in particular the air conditioning system of a vehicle. The air conditioning system consists of a closed circuit piping arrangement between system components, in which a coolant circulates. The coolant is compressed by a compressor 17, and flows to a condenser 18, where the coolant is liquefied. After exiting the condenser, the coolant is liquid, and exhibits a temperature of 30° C. to 50° C. (Centigrade) at a pressure of 7 bar to 15 bar (Barometers). The liquefied coolant is now supplied to the first flow channel 5 of internal heat exchanger 1 according to the invention, where the coolant exiting the condenser 18 releases heat to the gaseous coolant exiting the evaporator 20 passes through the second flow channel 6. The liquid coolant then streams into the expansion valve 19, where the coolant pressure is reduced. The coolant absorbs heat in the evaporator 20, wherein it is...

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PUM

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Abstract

An internal heat exchanger for an air conditioning system, comprising an outer tube and a line structure arranged inside the outer tube defining a meandering serpentine first flow channel, with the second flow channel formed between the outer tube and the line structure. The first flow channel is formed by extruded components joined together to form a unitary structure inserted into the second flow channel which includes facing channel elements defining a serpentine path and two shells adhered to the channel elements defining the sides of the flow path and having fins extending perpendicular to the base disposed in the second flow channel.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority pursuant to Title 35 USC §119(e) to U.S. Provisional Patent Application No. 61 / 729,875, filed Nov. 26, 2012, entitled “Internal Heat Exchanger for an Air Conditioning System,” the entire specification and drawings of which are hereby incorporated by reference herein as if fully set forth.BACKGROUND[0002]The invention relates to an internal heat exchanger for an air conditioning system, comprising an outer tube and a line structure arranged inside the outer tube, wherein the line structure includes a first flow channel, and wherein a second flow channel is formed between the outer tube and the line structure.[0003]Such an internal heat exchanger is known from DE 10 2007 015 186 A1. An internal heat exchanger integrated into the coolant circuit of an air conditioning system makes it possible to increase the efficiency of an air conditioning system by transferring the heat of the coolant from its high-pressure...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F28D7/10
CPCF28F1/40F25B40/00F28F13/06F28D7/082F28D7/10F28F1/10F28F1/32
Inventor LIERS, DENNYKEMPF, DOMINIKGARRISI, MATTTHRIFT, CHARLES
Owner TI AUTOMOTIVE ENG CENT HEIDELBERG
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