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Compressor crankcase heating control system and method

A technology of heating control and crankcase, which is applied in the field of compressors, can solve problems such as reduction and wear of compressors

Active Publication Date: 2017-06-20
EMERSON CLIMATE TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Starting the compressor at low crankcase temperatures and / or with large amounts of fluid in the casing may experience wear and / or reduced performance due to insufficient lubrication

Method used

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  • Compressor crankcase heating control system and method
  • Compressor crankcase heating control system and method
  • Compressor crankcase heating control system and method

Examples

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Embodiment Construction

[0024] The compressor may include a heating element which heats the crankcase to avoid problems associated with "cold starting" or "fluid flooding". "Cold start" may refer to the start of a compressor when the lubricant within the compressor is cold and diluted with refrigerant. As a result, the lubricant is less viscous and has a lower lubricating ability during cold starts, which may cause greater stress on one or more compressor components, such as bearings.

[0025] Heating the crankcase of the compressor increases the temperature of the lubricant within the crankcase. Increasing the temperature of the lubricant may improve performance and / or prevent damage to the compressor due to the increased viscosity of the cold refrigerant. "Liquid floodback" may refer to when liquid moves into the compressor casing. Liquid moves back to the compressor when the compressor is off and the compressor temperature is lower than the ambient temperature (around the compressor). Heating t...

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Abstract

A crankcase heating control system for a heat pump system, the crankcase heating control system includes a data receiving module and a power control module. The data receiving module receives data indicating a temperature of a compressor of the heat pump system, data indicating an ambient temperature, and data indicating a current date and a current time. The power control module selectively applies power to a heater of the compressor's crankcase and selectively deactivates the heater based on the temperature of the compressor, the ambient temperature, the current date, and the current time.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Utility Application No. 14 / 079,271, filed November 13, 2013, and US Provisional Application No. 61 / 729,425, filed November 16, 2012. The entire disclosures of the above-referenced applications are hereby incorporated by reference. technical field [0003] The present disclosure relates to compressors, and more particularly to heater control systems and methods for use with compressors. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work done by the presently named inventors is described in this Background section, and aspects of the specification that were not otherwise suitable as prior art at the time of filing are neither expressly nor impliedly admitted to be part of the present disclosure. current technology. [0005] Compressors can be used in numerous industrial and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C29/04
CPCF04B35/04F04B39/06F04B39/121F04B49/06F04C23/02F04C28/06F04C29/04F04C2240/30F04C29/045F04C2240/81F04C2270/701F04B39/0094F04B39/128F04B53/14F25B31/002F25B49/022
Inventor 亨格·范
Owner EMERSON CLIMATE TECH INC
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