John F Judge

US Patent:

6357516, Mar 19, 2002

Filed:

Feb 2, 2000

Appl. No.:

09/495917

Inventors:

John F. Judge - Stewartstown PA
Keith E. Starner - York PA

Assignee:

York International Corporation - York PA

International Classification:

F28F 1312

US Classification:

165 96, 165167, 165166

Abstract:

A plate heat exchanger for accommodating a circulating refrigerant and heat transfer fluid. The plate heat exchanger includes a plurality of heat transfer plates and at least one electrode plate. The plurality of heat transfer plates are mounted in parallel relationship to each other defining alternating flow spaces for a refrigerant and a heat transfer fluid. The electrode plate is located in each refrigerant flow space and is spaced from the adjacent heat transfer plates. The electrode plate includes outer electrode surfaces on each side thereof to produce an electric field. The effect of the electric field is an increase in the heat transfer rate between the refrigerant and heat transfer fluid. The invention also includes a method of exchanging heat between a heat transfer fluid and a refrigerant in a plate heat exchanger.

US Patent:

6557371, May 6, 2003

Filed:

Feb 8, 2001

Appl. No.:

09/778887

Inventors:

John F. Judge - Stewartstown PA

Assignee:

York International Corporation - York PA

International Classification:

F25B 4302

US Classification:

62468, 62 84, 62503, 165110

Abstract:

An apparatus and associated method for discharging a fluid and a liquid separated from the fluid from an outlet chamber of a heat exchanger. The outlet chamber is configured to collect the separated liquid. The outlet chamber is in fluid communication with an outlet opening disposed on an exit surface of the outlet chamber. The apparatus includes a plate that is positionable in the outlet chamber adjacent to the exit surface to form a channel between the plate and the exit surface. The plate is configured to protrude over the outlet tube opening so that the fluid flowing through the outlet chamber and into the outlet opening pulls the liquid collected in the outlet chamber through the channel and out through the outlet opening with the fluid. Because of the plate protruding over the outlet opening, the fluid exiting directly from the outlet chamber through the outlet opening must flow through a decreased area. This decreased area produces the vena contracta effect and creates a low pressure region.

US Patent:

6779594, Aug 24, 2004

Filed:

Sep 27, 1999

Appl. No.:

09/407116

Inventors:

John F. Judge - Stewartstown PA
Mark R. Geesey - Felton PA

Assignee:

York International Corporation - York PA

International Classification:

F28F 1316

US Classification:

165 96, 1651091

Abstract:

A heat exchanger assembly for use in an HVAC system is provided. The heat exchanger assembly includes: a shell-type casing; a plurality of tubes located inside the shell-type casing, each of the tubes having an outer surface and an irregular inner surface; and a plurality of electrodes. Each electrode is located inside one of the corresponding tubes to create a space between the electrode and the inner surface of the tube. A first fluid is located in each space between the electrodes and the inner surfaces of the tubes. A second fluid is located in a space between the tubes and the shell-type casing to flow across the outer surfaces of the tubes. A voltage is applied on the electrodes in order to increase the rate of heat transfer between the first fluid and the second fluid. The invention also includes a method of exchanging heat between a heat transfer fluid and a refrigerant in a shell and tube heat exchanger.

US Patent:

7849710, Dec 14, 2010

Filed:

Oct 12, 2005

Appl. No.:

11/248652

Inventors:

Paul De Larminat - Nantes, FR
Luc Le Cointe - Nantes, FR
John Francis Judge - Stewartstown PA, US
Satheesh Kulankara - York PA, US

Assignee:

York International Corporation - York PA

International Classification:

F25B 39/02

US Classification:

62515, 62527

Abstract:

A falling film evaporator is provided for use in a two-phase refrigeration system or process system. The evaporator includes a shell having an upper portion, a lower portion, and a tube bundle having tubes extending substantially horizontally in the shell. A hood is disposed over the tube bundle, the hood having an upper end adjacent the upper portion above the tube bundle, the upper end having opposed substantially parallel walls extending toward the lower portion, the walls terminating at an open end opposite the upper end. Once liquid refrigerant or liquid refrigerant and vapor refrigerant is deposited onto the tube bundle, the substantially parallel walls of the hood substantially prevent cross flow of refrigerant vapor or liquid and vapor between the tubes of the tube bundle.

US Patent:

20020056546, May 16, 2002

Filed:

Jan 22, 2002

Appl. No.:

10/051279

Inventors:

John Judge - Stewartstown PA, US
Keith Starner - York PA, US

Assignee:

York International Corporation - York PA

International Classification:

F28F027/00
F28F003/08

US Classification:

165/096000, 165/167000

Abstract:

A plate heat exchanger for accommodating a circulating refrigerant and heat transfer fluid. The plate heat exchanger includes a plurality of heat transfer plates and at least one electrode plate. The plurality of heat transfer plates are mounted in parallel relationship to each other defining alternating flow spaces for a refrigerant and a heat transfer fluid. The electrode plate is located in each refrigerant flow space and is spaced from the adjacent heat transfer plates. The electrode plate includes outer electrode surfaces on each side thereof to produce an electric field. The effect of the electric field is an increase in the heat transfer rate between the refrigerant and heat transfer fluid. The invention also includes a method of exchanging heat between a heat transfer fluid and a refrigerant in a plate heat exchanger.

US Patent:

20070277536, Dec 6, 2007

Filed:

May 30, 2006

Appl. No.:

11/420875

Inventors:

John F. Judge - Stewartstown PA, US

Assignee:

JOHNSON COLTROLS TECHNOLOGY COMPANY - Holland MI

International Classification:

F25B 43/00
F25B 47/00

US Classification:

62 85, 62474

Abstract:

In a closed loop refrigerant system and method, a refrigerant liquid filter is provided downstream of the condenser to receive and clean high pressure, high temperature liquid refrigerant. The invention provides means for cooling liquid refrigerant so as to render otherwise soluble contaminants insoluble before leaving the filter. The means for cooling preferably includes a refrigerant line provided in thermal contact with the liquid refrigerant in the filter. The refrigerant line contains expanded refrigerant gas or expanded liquid/gas mixture, which is at a lower temperature than the liquid refrigerant received from the condenser. Condensed liquid refrigerant is provided to the filter, which filter further includes a filter element for removing contaminants that have been rendered insoluble by the cooling of the liquid refrigerant. The filtered liquid refrigerant, from which otherwise soluble contaminants and insoluble contaminants have been removed, can then be supplied to downstream components such as expansion devices, evaporators, and compressors.

US Patent:

60792175, Jun 27, 2000

Filed:

Aug 3, 1998

Appl. No.:

9/127986

Inventors:

John F. Judge - Stewartstown PA

Assignee:

York International Corporation - York PA

International Classification:

G01K 1300

US Classification:

62129

Abstract:

A method for determining the composition of a ternary refrigerant in a refrigeration system. The method calculates the composition of the ternary refrigerant under the assumption that the expansion cycle is isenthalpic and that the ratio of two components in the ternary mixture remain fixed in relation to one another before and after the expansion. These assumptions permit the calculation of composition of a ternary mixture with relatively few inputs.