Geothermal heat-pump system and installation of same
December 28, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCombination refrigerant circuit and hot water preheater Fluid flow control system Side feed water swivel Fluid flow control system Refrigerant control for multiple heat exchangers Reverse cycle heating system for a building Fluid flow control system Compressor slugging prevention method for a refrigeration system Geothermal heating and air conditioning system Heating and cooling apparatus InventorApplicationNo. 580469 filed on 12/28/1995US Classes:165/45, GEOGRAPHICAL62/260, Geographic, e.g., subterranean feature175/62Boring horizontal boresExaminersPrimary: Flanigan, Allen J.Attorney, Agent or FirmForeign Patent References
International ClassesE21B 007/00F28D 021/00 AbstractThe geothermal heat transfer system comprises a plurality of heat exchange loops placed in the ground at an angle of less than a 20 degrees, but greater than a 5 degrees. Each loop has an out flow line and a return line, and a fluid tight, tapered and, U-turn juncture connecting the lines. A pair of distributors connects to inlet and outlet lines at a lower end and a plurality of outlet members at the upper end. A heat exchange device connects to the loops through the inlet and outlet lines. A liquid-oil-gas separator uses cup member and deflector to create a Venturi fluid inlet to separate the oil, returning it to the compressor. A bore hole drilling device comprises an hollow drilling bit with a cutting member at one end, a central fluid passage, and connecting means. The bore hole drilling device has a swivel member with a body portion and housing with a central bore and an inlet, connect to a water line. The body is position within the central bore and mounted for rotational motion within the housing. | |
