Gary Alan Helmink

20090031735, Feb 5, 2009

Aug 1, 2007

11/832176

Roger D. NOLL - Gahanna OH, US
Gary HELMINK - Galloway OH, US
Michael Jason GLOECKNER - Galena OH, US
Russell C. TIPTON - Westerville OH, US
Benedict J. DOLCICH - Westerville OH, US

LIEBERT CORPORATION - Columbus OH

F25B 41/04
F25B 1/00

62115, 62216

A vapor compression cooling system having a control unit adapted to receive working fluid pressure or temperature information to control a condenser cooling fluid control valve to minimize flow changes through the valve.

20090056348, Mar 5, 2009

Oct 31, 2008

12/262259

Roger D. NOLL - Gahanna OH, US
Gary HELMINK - Galloway OH, US
Michael Jason GLOECKNER - Galena OH, US
Russell C. TIPTON - Columbus OH, US
Benedict J. DOLCICH - Westerville OH, US

LIEBERT CORPORATION - Columbus OH

F25D 15/00
F25D 17/06
G05B 15/00

62119, 62190, 700275

A vapor compression cooling system having a control unit adapted to receive working fluid pressure or temperature, environment temperature or relative humidity, compressor digital output, or other cooling system information to control a condenser cooling fluid control valve to minimize flow changes through the valve.

20090129913, May 21, 2009

Jul 2, 2008

12/166434

Daniel J. Schutte - Lewis Center OH, US
Gary A. Helmink - Galloway OH, US
David W. Douglas - Cardington OH, US
Benedict J. Dolcich - Westerville OH, US
Anfu Zhong - Shenzhen, CN
Gang Xu - Shenzhen, CN
Lewis Marton - Lurline Bay, AU
Luis A. Anjos - Liverpool, AU
Peter M. Buckingham - Yagoona, AU

Liebert Corporation - Columbus OH

F04D 15/00

415 1, 4152131

A conditioning unit can allow the blower to be easily translated from a first operable position in the conditioning unit to a second operable position external to the conditioning unit. The translation of the blower does not require the disconnection of the blower and, accordingly, does not require that the blower be disconnected and reconnected to the control system. Such capability can facilitate the installation of the conditioning unit into a variety of applications and allows the purchaser to customize the blower location based on the desired performance. The ability to customize the installation of the conditioning unit without requiring disconnection and reconnection of the blower can reduce the cost and expense associated with the installation into differing applications.

20130098085, Apr 25, 2013

Apr 13, 2012

13/446374

John F. Judge - Galena OH, US
Timothy J. Schrader - Irwin OH, US
Stephen Sillato - Westerville OH, US
Roger Noll - Gahanna MI, US
Gary A. Helmink - Galloway OH, US
Pierpaolo Barbato - Noventa Padovana, IT
Giuseppe Dalla Mana - Vigonza, IT
Lou Monnier - Westerville OH, US
Zhiyong Lin - Columbus OH, US
Benedict J. Dolcich - Westerville OH, US
Daniel J. Schutte - Lewis Center OH, US
Greg Haggy - Pickerington OH, US
Thomas Harvey - Columbus OH, US
Zongtao Lu - Pittsburgh PA, US

Liebert Corporation - Columbus OH

F25B 49/02
F25B 41/04
F25D 17/06

62180, 62190, 62186, 622281, 62222

A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.

20130098087, Apr 25, 2013

Apr 13, 2012

13/446390

Roger Noll - Gahanna MI, US
Gary A. Helmink - Galloway OH, US
Pierpaolo Barbato - Noventa Padovana, IT
Giuseppe Dalla Mana - Vigonza, IT
Lou Monnier - Westerville OH, US

Liebert Corporation - Columbus OH

F25B 41/04

62222, 62 56

A cooling system has a tandem compressor, a condenser, an electronic expansion valve and an evaporator arranged in a direct expansion cooling circuit. The tandem compressor includes a variable capacity compressor and a fixed capacity compressor. A controller controls the electronic expansion valve and selects which of a plurality of superheat control modes to use in operating the electronic expansion valve based on control parameters and a current operating status of each of the variable capacity compressor and fixed capacity compressor of the tandem compressor.

20130098088, Apr 25, 2013

Apr 13, 2012

13/446344

Zhiyong Lin - Columbus OH, US
Roger Noll - Gahanna MI, US
John F. Judge - Galena OH, US
Gary A. Helmink - Galloway OH, US
Benedict J. Dolcich - Westerville OH, US
Daniel J. Schutte - Lewis Center OH, US
Timothy J. Schrader - Irwin OH, US

Liebert Corporation - Columbus OH

F25B 49/02

622281

A cooling system has a plurality of separate cooling stages including an upstream cooling stage having an upstream cooling circuit and a downstream cooling stage including a downstream cooling circuit, which are each a direct expansion cooling circuit including a tandem compressor. Each tandem compressor includes a fixed capacity compressor and a variable capacity compressor. A controller controls the fixed capacity compressor and variable capacity compressor of each tandem compressor based on a Call for Cooling, which of a plurality of ranges the Call for Cooling falls within, and whether the Call for Cooling is ramping up or ramping down.

20150230367, Aug 13, 2015

Apr 22, 2015

14/693478

- Columbus OH, US
Timothy J. SCHRADER - Irwin OH, US
Stephen SILLATO - Westerville OH, US
Roger NOLL - Gahanna OH, US
Gary A. HELMINK - Galloway OH, US
Pierpaolo BARBATO - Noventa Padovana, IT
Giuseppe Dalla MANA - Vigonza, IT
Lou MONNIER - West Chester OH, US
Zhiyong LIN - Dublin OH, US
Benedict J. DOLCICH - Westerville OH, US
Daniel J. SCHUTTE - Lewis Center OH, US
Greg HAGGY - Pickerington OH, US

Liebert Corporation - Columbus OH

H05K 7/20
F25B 49/02
F25D 17/06
F25B 41/04

A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.

20140230467, Aug 21, 2014

Jan 31, 2014

14/169185

- Columbus OH, US
Lou MONNIER - Westerville OH, US
Gary A. HELMINK - Galloway OH, US
Zhiyong LIN - Dublin OH, US
Daniel J. SCHUTTE - Lewis Center OH, US
Benedict J. DOLCICH - Westerville OH, US

F25B 49/02

62 89, 62 56, 62186, 62180, 62126

A method including determining whether an OFF criterion is satisfied for a lag compressor of a tandem set of scroll compressors. The tandem set of scroll compressors includes a lead compressor. The method further includes: initiating at least one process when the OFF criterion is satisfied; and maintaining the lag compressor in an ON state for a predetermined period subsequent to the OFF criterion being satisfied. The at least one process includes at least one of: operating the lead compressor at a maximum level; overriding a motor overload protection method, wherein the motor overload protection method protects motors of the lead compressor and the lag compressor; and overriding a proportional integral derivative (PID) method to reduce a speed of a condenser fan. The PID method controls the speed of the condenser fan.