Compression machine with a body oscillating between two reversal points

Patent metadata

Field	Value
Publication number	US-9644619-B2
Application number	US-201414783549-A
Country	US
Kind code	B2
Filing date	Mar 27, 2014
Priority date	Apr 16, 2013
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A compression machine ( 110 ) includes an oscillating body ( 111 ) oscillating between two reversal points (U 1 , U 2 ), wherein the oscillating body has a first mass (m 1 ), and a maximum value of resulting compression force (F*) when the oscillating body is used is less by a predetermined factor (F) than a maximum value of the resulting compression force when an oscillating reference body ( 121 ) having a reference mass (m ref ) is used in a reference compression machine ( 120 ) of same construction and using the same fluid ( 112 ), wherein the first mass exceeds the reference mass by a percentage that is a function of the predetermined factor, and wherein maximum value of the resulting compression force is reduced by the predetermined factor F by reducing cross-sectional area (A) of the oscillating reference body if the oscillating reference body were used. A related method is also provided.

First claim

What is claimed is:

1. A compression machine, comprising:
an oscillating body ( 111 ) with a first mass (m 1 ) which oscillates in movement ( 111 a ) between two reversal points (U 1 , U 2 ) for decompressing and compressing at least a portion of a fluid ( 112 ) in an alternating manner;
exerting a piston force (F M ) on the fluid for the fluid to exert a fluid force (F F ) on the oscillating body, wherein a resulting compression force (F*) is provided as a difference between the fluid force and the piston force; and
using a maximum value of the resulting compression force (F*) when the oscillating body ( 111 ) used is less by a predetermined factor (F) than a maximum value of the resulting compression force (F*) when an oscillating reference body ( 121 ) having a reference mass (m ref ) is used in a reference compression machine ( 120 ) of the same construction, and using the fluid ( 112 );
wherein the first mass (m 1 ) is greater than the reference mass (m ref ) by a percentage that is a function of the predetermined factor (F), and the maximum value of the resulting compression force (F*) would be reduced by the predetermined factor (F) by reducing an effective cross-sectional area (A) of the oscillating reference body ( 121 ) if the oscillating reference body ( 121 ) were used.

2. The compression machine of claim 1 , wherein
the oscillating body ( 111 ) oscillates between the two reversal points (U 1 , U 2 ) at an oscillating frequency;
the maximum value of the resulting compression force (F*) of the oscillating body ( 111 ) with the oscillating frequency is less by a second predetermined factor than the maximum value of the resulting compression force (F*) when the oscillating reference body ( 121 ) having the reference mass (m ref ) and the oscillating frequency is used in the reference compression machine ( 120 ) of the same construction and using the fluid ( 112 );
the oscillation frequency is greater than the reference frequency by a percentage amount that is a function of the second predetermined factor; and
the maximum value of the resulting compression force (F*) would be reduced by the second predetermined factor by reducing an effective cross-sectional area (A) of the oscillating reference body ( 121 ) if the oscillating reference body ( 121 ) were used.

3. The compression machine of claim 2 , wherein the second predetermined factor comprises values selected from the group consisting of between 0.2 and 0.9, and a second percentage comprises values selected from the group consisting of 0% up to 300%, 50%, 100%, 150%, 200%, 250% and 300%.

4. The compression machine of claim 1 , wherein the maximum value of the resulting compression force (F*) when the oscillating body ( 111 ) is used is less than a maximum value of a drive force (F A ) that is supplied by a drive unit ( 115 ) of the compression machine.

5. The compression machine of claim 4 , wherein the drive unit ( 115 ) comprises a linear motor.

6. The compression machine of claim 1 , wherein the oscillating body ( 111 ) comprises a reciprocating piston, or optionally the compression machine ( 110 ) is a reciprocating piston compressor.

7. The compression machine of claim 1 , wherein the predetermined factor (F) comprises a value between 0.2 and 0.9.

8. The compression machine of claim 1 , wherein the percentage comprises values selected from the group consisting of 0% up to 300%, 50%, 100%, 150%, 200%, 250% and 300%.

9. A method for designing a compression machine ( 110 ) in which an oscillating body ( 111 ) oscillates between two reversal points (U 1 , U 2 ), comprising:
oscillating movement ( 111 a ) of the oscillating body ( 111 ) between decompressing and compressing in alternating manner at least a portion of a fluid ( 112 ) of the machine;
exerting a piston force (F M ) with the oscillating body on the fluid ( 112 );
exerting a fluid force (F F ) with the fluid on the oscillating body ( 111 );
providing a resulting compression force (F*) as a difference between the fluid force (F F ) and the piston force (F M );
selecting a first mass (m 1 ) of the oscillating body ( 111 ) such that a maximum value of the resulting compression force (F*) when the oscillating body ( 111 ) is used is less by a predetermined factor (F) than a maximum value of the resulting compression force (F*) when an oscillating reference body ( 121 ) having a reference mass (m ref ) is used in a reference compression machine ( 120 ) of the same construction as the compression machine ( 110 ) and using the fluid ( 112 ), wherein the first mass (m 1 ) is greater than the reference mass (m ref ) by a percentage that is a function of the predetermined factor (F); and
reducing the maximum value of the resulting compression force (F*) by the predetermined factor (F) by reducing an effective cross-sectional area (A) of the oscillating reference body ( 121 ) if the oscillating reference body ( 121 ) were used.

10. The method of claim 9 for reducing the resulting compression force (F*), wherein said resulting compression force (F*) having been reduced does not sacrifice delivery capacity of said machine.

Assignees

• Linde Ag

Inventors

• Nagl Christoph

Classifications

• F04B37/20

  for wet gases, e.g. wet air · CPC title

• F04B35/01

  the means being mechanical · CPC title

• F04B37/08

  by condensing or freezing, e.g. cryogenic pumps · CPC title

• F04B37/18

  for specific elastic fluids · CPC title

• F04B19/22 Primary

  of reciprocating-piston type · CPC title