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Heat exchanger tube configuration for improved flow distribution

A technology for heat exchangers and inlet manifolds, applied in the field of parallel flow heat exchangers, can solve problems such as lack of flexibility

Inactive Publication Date: 2011-02-02
CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a design creates problems of inflexibility in design, manufacture and use

Method used

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  • Heat exchanger tube configuration for improved flow distribution
  • Heat exchanger tube configuration for improved flow distribution
  • Heat exchanger tube configuration for improved flow distribution

Examples

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Embodiment Construction

[0023] Figure 1 shows a multi-flow small-channel heat exchanger in the prior art, which includes a main manifold 11, a secondary manifold 12 and a plurality of small-channel tubes 13 fluidly connected between them. The interior of the main manifold 11 has flow dividers 14 and 16 forming separate sections 17, 18 and 19 which are fluidly separated from each other. Section 17 functions as an inlet manifold and section 19 functions as an outlet manifold. Similarly, the secondary manifold 12 has a flow divider 21 forming separate parts 22 and 23 .

[0024] The heat exchanger shown consists of a four-pass seven-loop configuration. That is, each of the four process groups 24, 26, 27 and 28 has seven tubes. The tubes of process grouping 24 thus fluidly connect section 17 of the main manifold 11 to section 22 of secondary manifold 12 , and then process grouping 26 fluidly connects section 22 to section 18 of the main manifold. Similarly, process grouping 27 fluidly connects portion ...

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Abstract

A microchannel heat exchanger includes for each channel, a serpentine shaped tube for providing a plurality of parallel flow passes for successively conducting fluid flow therethrough, and being fluidly interconnected between an inlet and an outlet manifold. Multiple circuits are obtained by the individual serpentine shaped tubes. Various methods are provided for forming the serpentine shaped tubes.

Description

technical field [0001] This invention relates generally to air conditioning systems and, more particularly, to parallel flow heat exchangers. Background technique [0002] Uneven distribution of refrigerant in the evaporator of a refrigerant system is a well-known phenomenon. Over a wide range of operating conditions, it can cause a noticeable reduction in evaporator and overall system performance. Due to the specific design of the refrigerant path of the parallel flow evaporator, the uneven flow distribution is especially obvious in the parallel flow evaporator. Attempts to eliminate / reduce the effect of this phenomenon on the performance of brazed aluminum heat exchangers have been little or no success. The main reason for this failure is usually complexity / inefficiency or prohibitive cost of the solution. [0003] Parallel flow heat exchangers have gained enormous attention and interest in recent years, not only in the automotive industry but also in the heating, venti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D1/047
CPCF28D2021/0071F28F2260/02F28F9/026F28D1/0478
Inventor A·陈J·R·穆尼奥斯Y·K·朴P·费尔马S·米利奥利Y·蒋
Owner CARRIER CORP
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