PAT. NO.
Title
1
7,086,844
Multi-stage scroll fluid machine having a set a seal elements between compression sections
2
7,001,161
Scroll fluid machine
3
6,922,999
Single-winding multi-stage scroll expander
4
6,764,288
Two stage scroll vacuum pump
5
6,682,328
Multi-stage scroll fluid machine having a seal element between compression sections
6
6,106,247
Scroll-type fluid displacement apparatus including an eccentric crank mechanism having an elongated shaft
7
6,050,792
Multi-stage scroll compressor
8
5,752,816
Scroll fluid displacement apparatus with improved sealing means
9
5,616,015
High displacement rate, scroll-type, fluid handling apparatus
10
5,258,046
Scroll-type fluid machinery with seals for the discharge port and wraps
11
5,145,344
Scroll-type fluid machinery with offset passage to the exhaust port
12
4,877,382
Scroll-type machine with axially compliant mounting
13
4,767,293
Scroll-type machine with axially compliant mounting
14
4,613,291
Inlet construction for a scroll compressor
15
4,609,334
Scroll-type machine with rotation controlling means and specific wrap shape
16
4,477,238
Scroll type compressor with wrap portions of different axial heights
17
4,457,674
High efficiency scroll type compressor with wrap portions having different axial heights
18
4,431,380
Scroll compressor with controlled suction unloading using coupling means
19
4,417,863
Scroll member assembly of scroll-type fluid machine
20
4,157,234
Scroll-type two stage positive fluid displacement apparatus
- Original Message -
From: Frederick Sparber
To: vortex-l
Sent: 10/6/2006 4:06:16 AM
Subject: [Vo]: Re: Can it Replace the Wankle
1979 Ingersol-Rand Patent 4,157,234
Devices of this type, generally referred to as "scroll" pumps, compressors and engines, have two interfitting spiroidal or involute spiral elements of like pitch which are mounted on separate end plates. These spirals are angularly and radially offset to contact one another along at least one pair of line contacts such as between spiral cylinders. The pair of line contacts will lie approximately upon one radius drawn outwardly from the central region of the scrolls. The fluid volume so formed therefore extends all the way around the central region of the scrolls. In certain special cases the pocket or fluid volume will not extend the full 360.degree. but because of special porting arrangements will subtend a smaller angle about the central region of the scrolls. The pockets define fluid volumes which vary with relative orbiting of the spiral centers while maintaining the same relative spiral angular orientation. As the contact lines shift along the scroll surfaces, the !
! pockets thus formed experience a change in volume. The resulting zones of lowest and highest pressures are connected to fluid ports."
- Original Message -
From: Frederick Sparber
To: vortex-l@eskimo.com
Sent: 10/6/2006 3:41:45 AM
Subject: Re: Can it Replace the Wankle
http://en.wikipedia.org/wiki/Scroll_compressor
"A scroll compressor operating in reverse is known as a scroll expander, and can be used to generate mechanical work from the expansion of a fluid."
Fred
