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Refrigerant system

A refrigeration system and refrigerant technology, applied in refrigerators, refrigeration components, air-conditioning systems, etc., can solve problems such as compressor failure

Inactive Publication Date: 2010-07-07
CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Loss of oil in the compression tank can cause serious compressor failure

Method used

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  • Refrigerant system
  • Refrigerant system
  • Refrigerant system

Examples

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Embodiment Construction

[0010] refer to figure 1 , which shows the refrigeration system 10 of the present disclosure. Refrigeration system 10 advantageously includes a controller 50 that can selectively or periodically remove excess refrigerant and compressed oil from reheat circuit 12 in the manner described below. In this manner, refrigeration system 10 substantially eliminates the problems associated with low oil levels in the compressed oil tank that can lead to non-recoverable compressor failure.

[0011] Refrigeration system 10 has compressor 22 , condenser 24 , expansion device 26 , and evaporator 28 in series fluid communication with one another via refrigerant line 20 . Refrigerant (not shown) is compressed by compressor 22, moves through refrigerant line 20, and passes through condenser 24 where it is cooled by interaction with ambient air. A condenser fan 25 may blow ambient air across the condenser 24 to help cool the refrigerant. The refrigerant then passes through refrigerant line 20...

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Abstract

The present disclosure provides a method of operation of a refrigerant system, which comprises a main refrigerant circuit, a reheat circuit, and a flow control device, which has a first position isolating said reheat circuit from said main refrigerant circuit, and a second position placing said reheat circuit in fluid communication with said main refrigerant circuit. The refrigerant system further comprises a controller in electrical communication with said flow control device. The controller is configured to move the flow control device to the first position during a cooling mode, and to move the flow control device to the second position during a reheating mode or an oil recovery mode. The refrigerant system controller can execute an oil recovery mode in continuous or intermittent manner.

Description

【Technical field】 [0001] The present disclosure relates to refrigeration and air conditioning systems. More specifically, the present disclosure relates to refrigeration systems having reheat circuits with improved oil return mechanisms. 【Background technique】 [0002] Refrigeration systems are utilized to control air temperature and humidity in various environments to be conditioned. Typically, the refrigerant is compressed in a compressor and sent to a heat rejection heat exchanger. While heat rejection heat exchangers are well known as condensers for subcritical applications and gas coolers for transcritical applications, for brevity they will be referred to as condensers in this disclosure. In the condenser, heat is exchanged between the outside ambient air and the refrigerant, thereby cooling the refrigerant. From the condenser, the refrigerant passes to an expansion device where it is expanded to a lower pressure and temperature, and then passed through the evaporat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D17/06
CPCF25B6/00F24F3/153F25B2700/04F25B31/004F25B2600/2507
Inventor A·利夫森M·F·塔拉斯
Owner CARRIER CORP
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