Abstract: A shaft joint has an inverse conical stopper. The joint is a combination of interconnected shafts, with one shaft being inserted into the other. The interface between the two shafts can be of any type: press-fit, thermally shrank, threaded, etc. Besides, the shaft-to-shaft interface can be also either bonded or non-bonded.

Abstract: A surface burner for gas combustion has a burner surface which is fabricated by intertwining or interweaving an elongated flexible element across a distinct burner frame. This fabrication method can be best referred to as braiding, but also plaiting, lacing or another comparable method.

Abstract: A shaft joint has an inverse conical stopper. The joint is a combination of interconnected shafts, with one shaft being inserted into the other. The interface between the two shafts can be of any type: press-fit, thermally shrank, threaded, etc. Besides, the shaft-to-shaft interface can be also either bonded or non-bonded.

Abstract: A method for manufacturing an inexpensive micro gas turbine has an existing compressor-turbine unit divided into two separate parts being a compressor and a turbine. The compressor and turbine shafts are joined. Two existing bearing units are taken, wherein one of them may belong to the existing compressor-turbine unit. The rotor of an existing generator is mounted on the joined shaft. A generator housing is manufactured and connected to the bearing units. The stator of an existing generator is mounted into the generator housing. Energy input into the working cycle of the gas turbine can be implemented by adding either an internal burner or external burner with a heat exchanger. By using inexpensive and often mass produced off-the-shelf components, a cost effective micro gas turbine can be derived.

Abstract: This patent presents the invention of a shaft joint with an Inverse Conical Stopper. The joint is a combination of interconnected shafts. The joint is between two shafts. In the joint, one shaft is inserted into the other. The interface between the two shafts can be of any type: press-fit, thermally shrank, threaded, etc. The Inverse Conical Stopper: Prevents swelling of the joint; Enforces concentric alignment of the two shafts; and Pre-stresses the interface. Besides, the shaft-to-shaft interface can be also either bonded or non-bonded. In the former case, the Inverse Conical Stopper also prevents failure of the bond by: Reducing loads on the bond by using the pre-stress to (partly) compensate for the centrifugal load. The Inverse Conical Stopper makes the joint particularly suitable for high centrifugal loads and high rotation speeds.

Abstract: A surface burner for gas combustion has a burner surface which is fabricated by intertwining or interweaving an elongated flexible element across a distinct burner frame. This fabrication method can be best referred to as braiding, but also plaiting, lacing or another comparable method.

Abstract: The invention relates to a method for manufacturing an inexpensive micro gas turbine 1. According to this method, an existing compressor-turbine unit is divided into two separate parts being a compressor 3 and a turbine 5. The compressor and turbine shafts are joined. Two existing bearing units (11 and 17) are taken, wherein one of them may belong to the existing compressor-turbine unit. The rotor 25 of an existing generator 7 is mounted on the joined shaft. A generator housing 21 is manufactured and connected to the bearing units. The stator 23 of an existing generator 7 is mounted into the generator housing. Energy input into the working cycle of the gas turbine can be implemented by adding either an internal burner or external burner with a heat exchanger. By using inexpensive and often mass produced off-the-shelf components, a cost effective micro gas turbine can be derived.