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Resistive suction muffler for refrigerant compressors

A muffler and refrigerant technology, applied in the direction of machines/engines, mechanical equipment, liquid variable capacity machinery, etc., can solve problems such as bearing deterioration and decomposition

Inactive Publication Date: 2005-09-21
BRISTOL COMPRESSORS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this material breaks down and causes deterioration of the bearing

Method used

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  • Resistive suction muffler for refrigerant compressors
  • Resistive suction muffler for refrigerant compressors
  • Resistive suction muffler for refrigerant compressors

Examples

Experimental program
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Embodiment Construction

[0021] exist figure 1 A compressor equipped with an impedance type muffler of the present invention is shown in . The compressor 2 is connected to a conventional refrigeration system (not shown), such as may be the system in a domestic or car refrigerator, having a condenser, expansion valve and evaporator and piping connecting them together. The compressor 2 is a reciprocating compressor, which is connected to an evaporator (not shown) through a suction pipe 12 inserted into a suction port 14 of the compressor 2 . A suction port extends through the compressor housing 16 . Refrigerant gas from the evaporator enters the low pressure side of the compressor 2 through the suction port 14 .

[0022] Compressor 2 includes an electric motor 18 . Illustrated is a standard induction motor having a stator 20 and a rotor 22 . However, any other type of motor can also be used. A shaft 24 extends through the rotor 22 . In this compressor 2 the bottom end 26 of the shaft 24 extends in...

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PUM

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Abstract

A resistive muffler attenuates sound generated by the gas intake and suction valve during compressor operation of a refrigerant compressor. The resistive muffler is assembled inline with the suction gas flow of the compressor and is positioned within the compressor housing. The resistive muffler attenuates the sound generated by the compressor during its operation as refrigerant gas is drawn into the compressor from an evaporator and passes through the resistive muffler in transit to the suction valve and hence to the region of the compressor where the gas is physically compressed. The resistive muffler includes a muffler housing having an intake end and an exhaust end. An acoustic foam assembly is incorporated into the muffler housing. The acoustic foam assembly is selected on the basis of its ability to absorb sound over a broad range of frequencies and is the muffler containing the acoustic foam is assembled within the compressor so that the sound does not bypass the muffler and transmit significant amounts of the sound to the compressor housing. The acoustic foam remains chemically inert when exposed to the compressor fluids at elevated temperatures of operation, and retains its ability to absorb sound over a broad range of frequencies even when saturated with compressor fluids. The foam assembly should also be able to withstand very large pressure fluctuations without experiencing deterioration.

Description

technical field [0001] The purpose of the present application is to provide a muffler for use with a compressor, and in particular to an acoustically resistive muffler for the low-pressure side of a compressor in a refrigeration and heating system. Background technique [0002] A compressor is one of several components in a cooling and heating system. Since compressors are used to compress the refrigerant gas in the system, increasing the pressure and temperature of these gases, they are very important components. Depending on the system applied, the cycle can be reversible so that the compressor can be used to heat or cool a space. Typically a compressor is used with a condenser, expansion valve, evaporator and fan to heat or cool a space. Depending on the direction of circulation, the system can be used to remove heat from or provide heat to a preselected space. [0003] Typically the compressor itself is a hermetic unit with a suction port and a discharge port. The se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/00
CPCF04B39/0061Y10S417/902Y10S181/403F04B39/005
Inventor 史蒂文·马歇尔戴维·吉列姆蒂莫西·万普勒戴维·蒙克
Owner BRISTOL COMPRESSORS INC
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