Heat exchange – Flow passages for two confined fluids
Patent
1997-07-17
1999-05-11
Kilner, Christopher B.
Heat exchange
Flow passages for two confined fluids
165 81, 361386, 62293, F28F3/00
Patent
active
059017830
ABSTRACT:
A microminiature laminated heat exchanger for use in a cryogenic probe, and a method of manufacture. The heat exchanger has high and low pressure flow patterns etched into oxygen free copper sheets, with the flow patterns being tortuous paths promoting turbulent flow. The sheets containing the flow patterns are bonded into a laminated assembly in the shape of a cylinder, with a high pressure inlet and a low pressure outlet in a first end, and a high pressure outlet and a low pressure inlet in a second end. The high pressure flow path lies alongside the low pressure flow path, with flow in the two paths being in opposite directions, to accomplish counterflow heat exchange. Substantial portions of the flow paths are either parallel to, or transverse to, the longitudinal axis of the heat exchanger, with the resulting heat flow being essentially radial or axial, respectively.
REFERENCES:
patent: 3228460 (1966-01-01), Garwin
patent: 3272203 (1966-09-01), Chato
patent: 3273356 (1966-09-01), Hoffman
patent: 3298371 (1967-01-01), Lee
patent: 3398738 (1968-08-01), Lamb et al.
patent: 3433299 (1969-03-01), Fleming
patent: 3439680 (1969-04-01), Thomas, Jr.
patent: 3477434 (1969-11-01), Hood, Jr. et al.
patent: 3534813 (1970-10-01), Fleming
patent: 3536075 (1970-10-01), Thomas, Jr.
patent: 3662755 (1972-05-01), Rautenbach et al.
patent: 3854530 (1974-12-01), Jouet et al.
patent: 3882934 (1975-05-01), Knoos et al.
patent: 3913581 (1975-10-01), Ritson et al.
patent: 4015606 (1977-04-01), Mitchiner et al.
patent: 4207897 (1980-06-01), Lloyd et al.
patent: 4377168 (1983-03-01), Rzasa et al.
patent: 4494171 (1985-01-01), Bland et al.
patent: 4559580 (1985-12-01), Lutfy
patent: 4781033 (1988-11-01), Steyert et al.
patent: 4934454 (1990-06-01), Vandyke et al.
patent: 5038857 (1991-08-01), Ciaccio
patent: 5058665 (1991-10-01), Harada
patent: 5078713 (1992-01-01), Varney
patent: 5101894 (1992-04-01), Hendricks
patent: 5139496 (1992-08-01), Hed
patent: 5147355 (1992-09-01), Friedman et al.
patent: 5275595 (1994-01-01), Dobak, III
patent: 5281212 (1994-01-01), Savage et al.
patent: 5281213 (1994-01-01), Milder et al.
patent: 5281215 (1994-01-01), Milder
patent: 5281217 (1994-01-01), Edwards et al.
patent: 5324286 (1994-06-01), Fowle
patent: 5337572 (1994-08-01), Longsworth
patent: 5365750 (1994-11-01), Greenthal
patent: 5423807 (1995-06-01), Milder
Coxeter, Ruth; Developments to Watch-- The Deep Freeze for Irregular Heartbeats; p. 90; Sep. 19, 1994; Business Week.
Gage, Andrew A.; Current Progress in Cryosurgery; pp. 483-486; Mar. 28, 1988; American College of Cryosurgery, 8th Annual Meeting.
Hubbell, Richard H.; New Heat Transfer and Friction Factor Design Data for Perforated Plate Heat Exchangers; pp. 383-390; 1988; Advanced Cryogenic Engineering, vol. 33.
Jichuan, Hu; Heat Transfer Characteristics of a Perforated Plate: Part II --Heat Transfer Coefficients for the Separate Working Surfaces; pp. 318-322; Sep., 1990; Cryogenics, vol. 30.
Khatri, Ajay; A Throttle Cycle Refrigerator Operating Below 77K; 8 pages; date of publication unknown; place of publication unknown.
Little, W. A.; Advances in Joule-Thomson Cooling; pp. 1-10; date of publication unknown; place of publication unknown.
Venkatarathnam, G.; Heat Transfer and Flow Friction Correlations in Perforated Plate Matrix Heat Exchangers; pp. 313-317; Sep., 1990; Cryogenics, vol. 30.
Venkatarathnam, G.; Matrix Heat Exchangers and Their Application in Cryogenic Systems; pp. 907-918; Nov., 1990; Cryogenics, vol. 30.
First list of abstracts related to perforated plate heat exchangers, compiled for the applicant through a computer data base search; list not published.
Second list of abstracts related to perforated plate heat exchangers, compiled for the applicant through a computer data base search; list not published.
Dobak III John D.
Marquardt Eric D.
Radebaugh Ray
Croyogen, Inc.
Kilner Christopher B.
Secretary of Commerce
Spinks Gerald W.
LandOfFree
Cryogenic heat exchanger does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cryogenic heat exchanger, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cryogenic heat exchanger will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-240565