Compressor with flooded start control

A technology for compressors and control modules, which is applied to compressors, liquid fuel engines, refrigerators, etc., and can solve problems such as compressor bearing wear, compressor failure, and damage to internal moving parts of the compressor

Active Publication Date: 2020-02-18
EMERSON CLIMATE TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, running the compressor without lubrication can damage the compressor's internal moving parts, cause compressor failure, and reduce compressor reliability and service life
For example, running a compressor without lubrication can cause premature wear on the compressor bearings

Method used

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  • Compressor with flooded start control
  • Compressor with flooded start control
  • Compressor with flooded start control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0053] refer to Figure 1A , shows a refrigeration system 10 and includes a compressor 12 , a condenser 14 , an evaporator 16 and a flow control device 18 . Refrigeration system 10 may be, for example, an HVAC system in which evaporator 16 is located indoors and compressor 12 and condenser 14 are located outdoors in a condensing unit. The flow control device 18 may be a capillary tube, a thermal expansion valve (TXV), or an electronic expansion valve (EXV). The compressor 12 is connected to a power source 19 .

[0054] The control module 20 controls the compressor 12 by turning the compressor 12 on and off. More specifically, the control module 20 controls the compressor contactor 40 ( image 3 shown in ), the compressor contactor 40 connects the electric motor 42 of the compressor 12 ( image 3 shown in ) is connected or disconnected from the power supply 19.

[005...

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PUM

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Abstract

Systems and methods are provided and include a compressor for a refrigeration system and a duct assembly that includes a duct frame and a sensor unit. The duct frame provides a path for evaporating refrigerant from a lubricant sump of the compressor. The sensor unit obtains temperature measurements of the refrigerant and a lubricant within the lubricant sump and heats and evaporates the refrigerant located within the duct frame of the duct assembly. A control module receives temperature measurements from the sensor unit, determines a presence of liquid refrigerant within the lubricant sump ofthe compressor in response to a determination that an actual temperature change does not correspond with an expected temperature change for the lubricant, and in response to a determination that the actual temperature change corresponds with the expected temperature change for the lubricant, operates the compressor.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Utility Application No. 15 / 951,919, filed April 12, 2018, and also claims the benefit of U.S. Provisional Application No. 62 / 502,910, filed May 8, 2017. The entire disclosure of the above application is incorporated herein by reference. technical field [0003] The present disclosure relates to compressor control, and more particularly, to systems and methods for flooded start control of compressors. Background technique [0004] This section provides background information related to the present disclosure which is not necessarily prior art. [0005] Compressors are used in a variety of industrial and residential applications to circulate refrigerant in refrigeration, HVAC, heat pump or chiller systems (commonly referred to as "refrigeration systems") to provide the desired heating or cooling effect. In any of these applications, the compressor should provide consistent and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F25B31/00
CPCF04B39/023F04B49/065F04B51/00F04C28/28F04C18/0215F04B39/0284F04C2240/81F04C2270/19F04B2203/021F04C28/06F04B39/0207F04B35/04F04B39/06F04B49/06F04B49/02F04B11/0091F25B2700/21156F04C29/04F04D29/582F04B2207/03F04B2201/0801F25B2600/0251F25B2500/28F25B2700/2106F25B2500/26
Inventor 迈克尔·R·芒罗
Owner EMERSON CLIMATE TECH INC
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