Earth to Air Systems, LLC Patent applications |
Patent application number | Title | Published |
20140311174 | Sub-Surface Insulation and well Depth Reduction for DX Geothermal Heat Pump and Refrigeration System - At least one of a DX geothermal refrigeration system design, a reverse-cycle DX geothermal heat pump system design, a DX geothermal cooling mode only system design, and a DX geothermal heating mode only system design, which utilize the sub-surface geology with a grouted well as a heat sink in the cooling/refrigeration mode, and as a heat source in the heating mode; with an optional air-source high level heat sink for use in the refrigeration mode; with optional multiple sub-surface larger sized vapor refrigerant lines, as well as with a super-efficient vacuum insulation design for relevant sub-surface refrigerant transport tubing, and with an optional specially designed electronic expansion valve. | 10-23-2014 |
20110209848 | Heat Transfer Refrigerant Transport Tubing Coatings and Insulation for a Direct Exchange Geothermal Heating/Cooling System and Tubing Spool Core Size - A method and/or apparatus for at least one of: protecting the sub-surface metal refrigerant transport tubing of a DX heat pump system from corrosive sub-surface environments via a specially designed protective coating; efficiently insulating the sub-surface liquid refrigerant transport line in a DX heat pump system; and enhancing at least one of the convective heat transfer rate and the efficiency of at least a DX heat pump system; and where the outside diameter (“OD”) of a central containment core upon which to roll a spool of sub-surface refrigerant transport tubing is specially sized so as not to damage any tubing insulation and so as to avoid any “S” bends during ground loop installation. | 09-01-2011 |
20110100588 | DX System Interior Heat Exchanger Defrost Design for Heat to Cool Mode - A DX heating/cooling system includes an automatic hot gas by-pass valve ( | 05-05-2011 |
20090272137 | Oil Return, Superheat and Insulation Design - A heating/cooling system design enabling one to maintain a superheat level of more than 1 degree F. and up to 10 degrees F., incorporating a specially designed accumulator, optional special oil return means, a specially designed receiver, and, when utilized in a DX geothermal system application, a preferable sub-surface liquid refrigerant transport line insulation design, as well as a design enabling the utilization of at least two compressors to increase heat transfer temperature differentials together with special oil separators. | 11-05-2009 |
20090260378 | DX System Heat to Cool Valves and Line Insulation - Alternative means of inhibiting frosting in the interior heat exchanger of a DX system when switching from the heating mode to the cooling mode, plus an improved insulation and heat transfer means for vertically oriented sub-surface geothermal heat transfer tubing, as well as a means to protectively coat the sub-surface metal tubing of a DX system in a corrosive environment. | 10-22-2009 |
20090133424 | Direct Exchange System Design Improvements - An R-410A DX heating/cooling system with: an electrical generating expansion device; with a protective means for refrigerant transport tubing containing dissimilar metals and/or in corrosive environments; with an automatic heating mode expansion device; with a TXV by-pass design; with retractable sub-surface tubing designs; with sub-surface line set sizing at varying depths and lengths; with reciprocal compressor sizing; with a DX Hydronic system design; with an improved oil separator float design; with a mobile DX system design; and with a resting module DX system design. | 05-28-2009 |
20090095442 | Advanced DX System Design Improvements - A direct exchange geothermal heating/cooling system has a self-adjusting expansion valve and a bypass flow path to improve efficiency when the system operates in a heating mode. The expansion valve may operate based solely on pressure from the vapor refrigerant transport line. The system may alternatively include an accumulator, a compressor, and an oil separator, wherein an oil return line returns oil from the oil separator to the accumulator. Additionally, a direct exchange geothermal heating/cooling system may include a hot-gas bypass valve for diverting heated vapor refrigerant to the liquid refrigerant line. Finally, a direct exchange geothermal heating/cooling system having a sub-surface heat exchanger extending to a depth of at least 300 feet may use a refrigerant particularly suited for such an application. | 04-16-2009 |
20090065173 | Direct exchange heating/cooling system - A direct exchange heating/cooling system includes a specially designed supplemental air-source heat exchanger (also referred to herein as a High Level Heat Dissipater (“HLHD”). The HLHD is coupled to the primary vapor/hot gas line exiting the system's compressor at a point between the compressor unit and the sub-surface geothermal heat exchange tubing, and is operable only in the cooling mode of system operation. The HLHD includes heat exchange tubing that is sheltered from rain/moisture and has supply and discharge refrigerant transport tubing with relatively equally sized interior diameters, designed solely for mostly vapor (as opposed to liquid) refrigerant transport. The HLHD incorporates at least two check valves, or the like, so as to force hot compressor discharge gas through the HLHD in the cooling mode, and so as to prohibit geothermally warmed refrigerant gas flow through the HLHD in the heating mode. The HLHD has specially designed heat exchangers and may optionally include a fan. | 03-12-2009 |