Permission granted to reproduce for educational use only © Goodheart-Willcox Co., Inc. Chapter 8 Compressors, Clutches, and Drives.

Permission granted to reproduce for educational use only© Goodheart-Willcox Co., Inc.

Chapter 8

Compressors, Clutches, and Drives

Permission granted to reproduce for educational use only© Goodheart-Willcox Co., Inc.

l. Objectives

Explain the purpose of a refrigeration compressor.

Identify the major parts of radial and axial piston compressors.

Explain the operation of radial and axial piston compressors.

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ll. Objectives

Identify the major parts and explain the operation of rotary vane compressors.

Identify the major parts and explain the operation of scroll compressors.

Explain the operation of a capacity control valve.

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lll. Objectives

Explain how the engine drives the compressor.

Explain the purpose of a compressor clutch.

Identify the major parts of a compressor clutch.

Explain the operation of a compressor clutch.

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Compressor Purpose

To raise the pressure and temperature of the refrigerant

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Basic Compressor Parts

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Compressor Parts

Body

Ears

Endplate

Crankshaft

Crankcase

Lip seal

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Compressor Body

The mounting place for other compressor parts

Holds refrigerant and lubricating oil

Made of aluminum on newer vehicles

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Compressor Ears

Built-in mounting points for attaching compressor to engine

Ears

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Endplate

Attached to the compressor body

Low and high side hose connections installed on the body or endplate

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Crankshaft and Crankcase

Crankshaft rides on bearings in the compressor body

Crankcase holds the crankshaft

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Crankshaft and Crankcase Illustration

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Compressor Parts

Crankshaft drive end extends from the body

Pulley and clutch assembly installed on the crankshaft drive end

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Lip Seal

Always installed where crankshaft drive end extends from compressor body