Trane International Inc.

Raymond Scott Schafer

Daoud Ali Jandal

Stephen Anthony Kujak

Julie Ann Majurin

Paul Edmond Cieslinski

Steven Erwin Meloling

Steven E Wolfgram

James M McCool

Robert A Harris

Bradley S Wickersham

Raghu Kumar

Fred Eickstaedt

Kishore Prabakaran

Ronald E Schlicht

A bolted hinge assembly is provided for a waterbox cover (a 'waterbox hinge assembly'). The waterbox hinge assembly generally does not require welding on the waterbox cover or the heat exchanger in an HVAC system ('HVAC unit' hereinafter). Further, the waterbox hinge assembly may be installable to the HVAC unit without removing the heat exchange fluids (e.g., water, refrigerant, etc.) from the HVAC unit. In some cases, the waterbox hinge assembly can be installed on an HVAC unit without removing any bolts from the waterbox cover. Once installed, the waterbox hinge assembly can be left in place so that it can be reused anytime the HVAC unit is serviced.

Hinged waterbox cover

Refrigeration systems with a purge for removing non-condensables from the refrigerant and an acid filter for remove acid from the refrigerant are provided. The acid filter can be operatively connected to the purge. Optionally, the purge can include a separating device for separating non-condensable gases from condensable refrigerant gases and an acid filter is provided to remove acid from the condensable refrigerant gases.

Refrigeration system with purge and acid filter

Embodiments described in this specification are generally directed to a bolted hinge assembly for a waterbox cover (a 'waterbox hinge assembly'). The waterbox hinge assembly generally does not require welding on the waterbox cover or the heat exchanger in an HVAC system ('HVAC unit' hereinafter). Further, the waterbox hinge assembly may be installable to the HVAC unit without removing the heat exchange fluids (e.g., water, refrigerant, etc.) from the HVAC unit. In some embodiments, the waterbox hinge assembly can be installed on an HVAC unit without removing any bolts from the waterbox cover. Once installed, the waterbox hinge assembly can be left in place so that it can be reused anytime the HVAC unit is serviced.

Hinged waterbox cover method

Growing community of inventors

Holmen, WI, United States of America

Raymond Scott Schafer