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Low charge heat exchanger in a sealed refrigeration system

a heat exchanger and refrigeration system technology, applied in indirect heat exchangers, domestic cooling devices, lighting and heating devices, etc., can solve the problems of less environmental impact refrigerants, flammable or toxic, and generation of poisonous gases, so as to reduce the refrigerant charge and reduce the cooling capacity of the system , the effect of reducing the charge of refrigeran

Inactive Publication Date: 2012-03-01
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]The present invention provides heat exchangers, such as evaporators and condensers, for a sealed refrigeration system, wherein the heat exchangers have a unique combination of refrigerant side (inner) diameter, tube length, and refrigerant charge mass that provides balanced efficiency between cooling capacity of the system and reduced refrigerant charge.

Problems solved by technology

In addition to the environmental concerns, when a refrigerant containing chlorine or fluorine is burned, poisonous gases are generated and released.
Unfortunately, the refrigerants with the least environment impact (such as R-600a) also tend to be the most flammable or toxic.
Ammonia has excellent refrigerant characteristics, but is toxic in large charge amounts.

Method used

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  • Low charge heat exchanger in a sealed refrigeration system
  • Low charge heat exchanger in a sealed refrigeration system
  • Low charge heat exchanger in a sealed refrigeration system

Examples

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Embodiment Construction

[0021]Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0022]FIG. 1 depicts a consumer refrigeration appliance 10 in the form of a refrigerator that may incorporate a sealed refrigeration system in accordance with aspects of the invention. It should be appreciated that the term “consumer refrigeration appliance...

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Abstract

A consumer refrigeration appliance, such as a refrigerator, includes a refrigeration system charged with a refrigerant and further having a compressor, a condenser, an expansion device, and an evaporator. At least one of the evaporator or condenser is a spine fin heat exchanger having a defined length of tube with a spine fine material configured around at least a portion of tube. The tube has a reduced refrigerant side diameter that provides a reduced refrigerant side area defined by the tube length and refrigerant side diameter. The refrigeration system has a reduced refrigerant charge mass.

Description

FIELD OF THE INVENTION[0001]The present subject matter relates generally to refrigeration systems, and more particularly to heat exchangers used in sealed refrigeration systems.BACKGROUND OF THE INVENTION[0002]Consumer refrigerators generally utilize a relatively simple vapor compression refrigeration cycle that includes a compressor, a condenser, an expansion device, and an evaporator connected in series. The system is charged with a refrigerant such as R-134a. The type and amount of refrigerant are important considerations in the cost, efficiency, and safety aspects of the refrigerators.[0003]Essentially all available refrigerants have environmental and safety concerns. For example, it has been found that CFC and HCFC refrigerants are a significant contributor to depletion of the stratospheric ozone layer. As a result, the use of CFC refrigerants was discontinued in most countries by 1996, and the use of HCFC refrigerants is being curtailed.[0004]In addition to the environmental c...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25D11/00
CPCF25D11/00F28F1/36F28D2021/0068F25B39/02F25B2400/12F25B2500/01F25B39/04
Inventor JUNGE, BRENT ALDENZENTNER, MARTIN MITCHELLJESSIE, JEFFREYMAY, JASON ANDREWKEMPIAK, MICHAEL JOHN
Owner GENERAL ELECTRIC CO
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