John Francis 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:

6434003, Aug 13, 2002

Filed:

Apr 24, 2001

Appl. No.:

09/840058

Inventors:

Steven N. Roy - York PA
John F. Judge - Stewartstown PA
Harold R. Schnetzka - York PA

Assignee:

York International Corporation - York PA

International Classification:

H05K 720

US Classification:

361699, 361698, 361701, 361702, 361704, 361711, 257714, 174 151, 165 804, 16510422, 16510433

Abstract:

The present invention relates to a cold plate for cooling electronic components comprising a base having a top surface onto which at least one electronic component is to be placed; a cooling well formed in the top of the base and open at the top; a feed channel formed in the base for carrying fluid into the cooling well; a drain channel formed in the base for carrying cooling fluid away from the cooling well; cooling well inlets and outlets formed in the cooling well and in communication with the feed channel and drain channels, respectively. The feed and drain channels are sufficiently large relative to the size and flow characteristics of the well and cooling well inlets and outlets such that when the cooling fluid flows through the device, the pressure drop across the feed channel is substantially less than the pressure drop across the well.

US Patent:

6530236, Mar 11, 2003

Filed:

Apr 20, 2001

Appl. No.:

09/838196

Inventors:

Curtis C. Crane - York PA
John F. Judge - Stewartstown PA

Assignee:

York International Corporation - York PA

International Classification:

F25B 3904

US Classification:

62 89, 62192, 622283

Abstract:

This invention increases efficiency of a refrigeration system by maximizing the cooling of the condenser and reducing unnecessary work done by the compressor. In air cooled systems it will also increase the stability of the fans by reducing fan cycling. The fan controller will utilize an algorithm that will consider the following inputs: oil pressure, compressor suction pressure, expansion valve position, compressor loading, last compressor loading change, and current fan stage. The algorithm uses fuzzy logic to characterize the inputs and generates an output that controls the system cooling fans.

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:

7003971, Feb 28, 2006

Filed:

Apr 12, 2004

Appl. No.:

10/822460

Inventors:

Douglas Alan Kester - York PA, US
Harold Robert Schnetzka - York PA, US
Mustafa Kemel Yanik - York PA, US
John F. Judge - Stewartstown PA, US
Mahesh Valiya Naduvath - Lutherville MD, US

Assignee:

York International Corporation - York PA

International Classification:

F25D 23/12

US Classification:

622592, 62333, 165 804, 16510433, 361699

Abstract:

A chiller system includes a refrigerant loop, the refrigerant loop further including a compressor, an air-cooled condenser arrangement and an evaporator arrangement connected in a first closed refrigerant loop. A motor is connected to the compressor to drive the compressor, a drive is connected to the motor to power the motor and a power/control panel controls the refrigerant loop. The power/control panel and the condenser arrangement are connected in a second closed coolant loop. The second closed coolant loop provides cooling to the enclosure and/or components within the enclosure disposed on a chill plate. Condensation is substantially prevented from forming inside the enclosure, despite the enclosure lacking a humidity control device.

US Patent:

7096681, Aug 29, 2006

Filed:

Feb 27, 2004

Appl. No.:

10/788723

Inventors:

Frank Eugene Wills - York PA, US
Harold Robert Schnetzka - York PA, US
Douglas Alan Kester - York PA, US
John F. Judge - Stewartstown PA, US
Mahesh Valiya-Naduvath - Lutherville MD, US
Israel Federman - York PA, US

Assignee:

York International Corporation - York PA

International Classification:

F25B 7/00
F25B 1/00
F25B 49/00

US Classification:

62175, 622281, 62230, 62510, 417 2, 417 441, 417 45

Abstract:

A system and method are provided for variable speed operation of a screw compressor to obtain increased capacity and efficiency. The screw compressor is connected to an induction motor driven by a variable speed drive, wherein the screw compressor has a variable output capacity that is dependent on the output speed of the motor. To obtain increased capacity and efficiency, the screw compressor is operated at a speed greater than the screw compressor's rated speed and does not include a slide valve. The maximum operating speed of the screw compressor, which speed is greater than the rated speed, is related to the maximum operating speed of the motor when operated at a voltage and frequency provided by the variable speed drive that is greater than the motor's rated voltage and frequency in a constant flux or constant volts/Hz mode.

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.