37results about How to "Reduced compression loss" patented technology

A rotary compressor includes a compression unit that includes an annular cylinder including a cylinder inner wall, a suction port, and a vane groove, an end plate covering an end portion of the cylinder, an annular piston revolving in the cylinder to form an actuation chamber between the cylinder inner wall and the annular piston; and a vane protruding into the actuation chamber to divide the actuation chamber into a suction chamber and a compression chamber. A discharge port, which is provided in the end plate near the vane groove, communicates with the compression chamber, and a discharge groove, which is provided in the cylinder inner wall near the vane groove, communicates the compression chamber with the discharge port, and one side end portion of the discharge groove is located in an end portion of a wall portion of the vane groove on the compression chamber side.

The invention relates to a piston compressor, especially a refrigerant compressor, which has a compression chamber arranged in a compressor block and limited by a cylinder head (10), the cylinder headhas at least one suction valve (23, 24) and at least one pressure valve (21, 22) as well as at least one plate valve arrangement of a valve cover (12). The invention intends to realize low manufacture cost, and good efficiency. Therefore, the valve plate arrangement (16) is formed by a support plate (17) comprising suction valves (23, 24, 26, 27) and pressure valves (18, 19, 21, 22), and the support plate (17) is connected to the valve cover (12) by at least one airtight connecting seam (28, 31), a suction area (22) and a compression area (32) are separated each other by the connecting seam (28, 31), and at least the compression area (29, 30) is sealed relatively to the outside.

The invention discloses a machining fixture and a machining method for a piston of a compressor and the compressor. The machining fixture for the piston of the compressor comprises a rack, a piston, a cutting piece, a first fixing part, a second fixing part and an auxiliary part; the cutting piece can be connected with the rack, and the first fixing part is adapted for fixing the piston; and the first fixing part can be connected with the rack, the second fixing part can be switched between the first position and the second position, the second fixing part can be connected with the rack, and the auxiliary part can be connected with the second fixing part. When the second fixing part is located at the first position, the auxiliary part abuts against the piston, and an installing groove is machined on the piston by the cutting piece; and when the second fixing part is located on the second position, the second fixing part drives the auxiliary part away from the piston. According to the machining tooling for the piston of the compressor, the situations that the precision is low and the piston is deformed due to unbalancing cutting force when the cutting piece cuts the piston directly can be avoided; and the machining tooling is simple, cost is low, and precision is high.

The invention discloses a three-dimensional seismic volume vector quantization compression volume rendering method, which includes three parts: data preprocessing, vector quantization, and decompression rendering. By introducing the target feature, the compression loss of the target area is reduced, and the compression rate of the non-target area is improved; the concept of data classification is introduced to facilitate data compression; the layer feature is introduced, combined with this feature to determine the target area, and the information is used to compress the volume data ; Introduce the concept of error coefficient, through which the distortion degree of the target area can be effectively reduced and the overall compression rate can be improved. Theoretical and simulation analysis shows that the present invention improves the peak signal-to-noise ratio of the target area while improving the overall data compression rate.

The embodiment of the present invention discloses a data compression and decompression method, system and electronic equipment. The data compression method includes: grouping data to be compressed based on preset rules; calculating the absolute value of each data to be compressed in each group, And determine the maximum value in the absolute value in each group; calculate the data compression measurement value of each group according to the maximum value in the absolute value in each group; based on the data compression measurement value and each to be compressed in the corresponding group The absolute value of the data determines the compression factor of each data to be compressed in the corresponding group; according to the compression factor of each data to be compressed in the corresponding group and the preset target compression absolute value bit width, each data to be compressed in the corresponding group to compress. By adopting the above technical solution, the IQ data can be effectively compressed, the compression loss of small signals is reduced, and the compression performance is improved.