Fujitsu General has been granted a patent for a hermetic compressor design featuring a compression unit with upper and lower cylinders connected to suction tubes, and an accumulator vessel with gas-liquid separation tubes. The innovative design enhances refrigerant circulation efficiency in the compressor system. GlobalData’s report on Fujitsu General gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Fujitsu General, Smart climate control systems was a key innovation area identified from patents. Fujitsu General's grant share as of February 2024 was 60%. Grant share is based on the ratio of number of grants to total number of patents.
Hermetic compressor with gas-liquid separation for refrigeration cycle
The granted patent (Publication Number: US11927189B2) discloses a hermetic compressor design that includes a vertically cylindrical compressor body vessel accommodating a compression unit and a motor. An accumulator vessel is provided below the compressor body vessel to separate gas-liquid refrigerant from a refrigeration cycle and supply gas refrigerant to the compression unit. The compression unit consists of upper and lower cylinders with corresponding suction tubes, while the accumulator vessel features an accumulator shell with suction tubes and gas-liquid separation tubes that connect to the compression unit via external connecting tubes.
Furthermore, the hermetic compressor described in the patent includes specific arrangements within the accumulator shell and compressor body vessel. The gas-liquid separation tubes penetrate the accumulator shell through side holes, with the upper and lower tubes positioned side by side in the circumferential direction of the shell. Similarly, the upper and lower compression unit suction tubes are arranged vertically in the compressor body vessel. Additionally, the first through hole for the accumulator suction tube and the second and third through holes for the gas-liquid separation tubes are positioned adjacent to each other in the circumferential direction of the accumulator shell, enhancing the overall efficiency and functionality of the compressor design as outlined in the patent.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
