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Multi-channel heat exchanger with multi-stage expansion device

A technology for expansion devices and heat exchangers, which can be used in indirect heat exchangers, heat exchanger shells, heat exchange equipment, etc., and can solve problems such as low efficiency of heat exchangers

Inactive Publication Date: 2009-11-25
CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, there is a need for a multi-stage expansion device for small channel heat exchangers that is able to use multiple larger orifices in series to create a pressure drop during the expansion phase to properly mix the refrigerant fluid to avoid the aforementioned Problems causing heat exchanger inefficiency

Method used

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  • Multi-channel heat exchanger with multi-stage expansion device
  • Multi-channel heat exchanger with multi-stage expansion device
  • Multi-channel heat exchanger with multi-stage expansion device

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Embodiment Construction

[0020] figure 1 A small channel heat exchanger is shown, indicated generally at 10 . The heat exchanger 10 has an inlet header 15 and an outlet header 20 . Connecting headers 15 and 20 are a series of one or more small channel or microchannel tubes 25 that form the main body of heat exchanger 10 . Each small channel or microchannel tube 25 is a very small diameter tube which together with other tubes forms the body of the heat exchanger 10 and which transports the refrigerant 30 during evaporation.

[0021] Inlet header 15 receives refrigerant 30 , which may be a single-phase or two-phase refrigerant, flowing through small channel or microchannel tubing 25 . The inlet header houses the multiple expansion device 40 of the present invention. At least one or more multiple expansion devices 40 of the present invention may be inserted into header 15 to increase the pressure drop of refrigerant 30 to ensure an even distribution of refrigerant to small passage tubes 25 . although...

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PUM

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Abstract

An expansion device for a heat exchanger having a manifold and a plurality of mini-and or micro-channels. The expansion device has an outer element having a plurality of orifices therethrough that is received in the manifold, and an inner element telescopically received in the outer element having at least one orifice therethrough and being in fluid communication with the plurality of orifices. Fluid passing through the at least one orifice and through the plurality of orifices is expanded and reduced in pressure prior to entering the manifold.

Description

technical field [0001] The invention relates to an expansion device for a heat exchanger. More specifically, the present invention relates to an expansion device for a small channel or microchannel heat exchanger (MCHX) that provides pressure drop and mixing through multiple orifices to improve heat exchanger efficiency. Background technique [0002] Refrigeration systems are well known in modern times and are ubiquitous in such industries as the food service, chemical and automotive industries. Heat exchangers are widely demanded in office buildings and residential applications. These systems are very concerned about failure or, more commonly, inefficiency. [0003] A traditional refrigeration cycle, or air conditioner, consists of a compressor, condenser, expansion valve, evaporator, and refrigerant whose evaporation produces a cooling temperature. In some refrigeration systems, the evaporator is a series of parallel small diameter tubes. As the refrigerant fluid flows...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06F28F9/02
CPCF28D2021/0071F28F2260/02F25B41/06F25B39/028F28F9/0246F25B41/39
Inventor M·B·戈尔布诺夫Y·姜J·J·桑焦文尼H·比默
Owner CARRIER CORP