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Tubular heat exchanger for motor vehicle air conditioners

A technology for automotive air conditioners and heat exchangers, applied in the direction of indirect heat exchangers, heat exchanger types, tubular components, etc., can solve problems such as pipe diameter and pipe length limitations, high pressure loss, and unfavorable performance of air conditioning systems, etc., to achieve The effect of high heat transfer

Inactive Publication Date: 2011-06-08
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the known straight or helically twisted continuous grooves cause high pressure loss, which is detrimental to the overall performance of the air conditioning system
[0005] The disadvantage of the application in the air-conditioning area of ​​the car is that the pipe diameter and pipe length are limited due to the existing installation space requirements in the defined area

Method used

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  • Tubular heat exchanger for motor vehicle air conditioners
  • Tubular heat exchanger for motor vehicle air conditioners
  • Tubular heat exchanger for motor vehicle air conditioners

Examples

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Embodiment Construction

[0040] exist Figure 1 to Figure 3 In , a coaxial tube heat exchanger 10 with an inner tube 12 and an outer tube 14 is shown. The inner tube 12 is provided with a single inwardly protruding embossment 16, while the outer tube 14 has a substantially continuous cylindrical shape. To this end, embossments 16 designed as grooves in the outer surface of the inner tube 12 protrude correspondingly from the inner surface of the inner tube 12 .

[0041] The inner pipe is mainly used to connect the evaporator and the compressor of the automobile air-conditioning device in a fluid sense. One end of it is connected to the outlet of the evaporator, and the other end is connected to the suction end of the compressor. The outer tube 14 or the outer channel formed by the outer tube 14 and the inner tube 12 is preferably used to flow refrigerant under high pressure in the opposite direction to the vapor refrigerant flowing through the inner tube 12 .

[0042] In this case, the high-temperatu...

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PUM

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Abstract

A tubular heat exchanger is provided for a motor vehicle air conditioner with an inner tube (12, 22, 32, 42, 52, 62, 72) through which a fluid or gas can flow and an outer tube (14) radially enclosing the inner tube subject to the formation of an intermediate space through which a flow can flow. The inner tube (12, 22, 32, 42, 52, 62, 72) in this case includes a quantity of stampings (16, 18, 26, 28, 36, 38, 46, 48, 56, 58, 66, 68, 76, 78) arranged spaced from one another and with their longitudinal extension at least partially extending in axial direction of the inner tube(12, 22, 32, 42, 52, 62, 72).

Description

technical field [0001] The invention relates to a tubular heat exchanger for automobile air conditioners, in particular to a double-walled heat exchange tube, which has an inner tube through which liquid or gas can flow and an outer tube. The flow gap surrounds the inner tube radially. Background technique [0002] Double-wall heat exchange tubes are quite common for automotive air conditioners. For example, DE 10 2005 052 972 A1 describes a double-walled pipe with an outer pipe and an inner pipe inserted into the outer pipe, wherein the inner pipe has a plurality of linear or helically twisted pipes extending continuously in the longitudinal direction. groove. Such grooves enlarge the cross-sectional area of ​​the passage extending between the inner and outer tubes, thus reducing the flow resistance of the refrigerant, usually under high pressure, flowing in the outer passage. [0003] The flow rate of the high-pressure refrigerant flowing through the channel can be incr...

Claims

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Application Information

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IPC IPC(8): F28D7/10F28F1/40F25B39/00F25B41/00B60H1/32
CPCF28F13/06F28D2021/0085F28D7/106F28F1/426F25B39/00F28F1/42
Inventor 洛萨.塞波尔德阿泰姆.瑟伊
Owner GM GLOBAL TECH OPERATIONS LLC
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