Cascade vane compressor
A technology of compressors and compression mechanisms, applied in mechanical equipment, machines/engines, pump combinations for elastic fluid rotary piston type/oscillating piston type, etc., can solve the problems of increasing the size of cascade vane compressors and achieve Efficiency improvement, production cost reduction, high mechanical efficiency effect
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no. 1 approach ）
[0050] Such as figure 1 As shown, the cascade vane compressor of the first embodiment has a first side plate 11, a first cylinder block 5, a second side plate 13, a second cylinder block 7, and a third side plate 15. The first side plate 11. The first cylinder block 5, the second side plate 13, the second cylinder block 7, and the third side plate 15 are fixed in a state of being housed in the front housing member 1 and the rear housing member 3 coupled to each other. The front housing member 1 and the rear housing member 3 form an outer shell 9 . The diameter of the casing 9 is the same as that of the single-cylinder type vane compressor. Furthermore, the first cylinder block 5 and the second cylinder block 7 have the same outer shape.
[0051] Similarly, if figure 2 As shown, in the first cylinder block 5, a first cylinder chamber 5a having an oval shape in a direction perpendicular to the axis is formed. Similarly, if image 3 As shown, a second cylinder chamber 7 a h...
no. 2 approach ）
[0098] Such as Figure 11 As shown, the cascade vane compressor of the second embodiment has a sliding bearing 19 press-fitted into the axial hole 13a of the second side plate 13 from the front side. Such as Figure 13 As shown, the axial hole 25a communicates with a main radial hole 25d extending in the radial direction from the front end of the axial hole 25a to the circumferential surface. The axial bore 25a and the main radial bore 25d form a first path of rotation.
[0099] In addition, three main axial grooves 13k for communicating with the main annular groove 13i are formed on the second side plate main body 13b. Such as Figure 11 As shown, the corresponding main axial groove 13k extends rearwardly in the axial direction and opens into the axial hole 13a. The length from the front end surface of the second side plate 13 to the main radial hole 25d is longer than the length from the rear end surface of the second side plate 13 to the main radial hole 25d.
[0100] ...
no. 3 approach ）
[0106] Such as Figure 15 As shown, the vane compressor of the third embodiment does not employ the sliding bearings 17, 19, 21 as in the first and second embodiments. The second side plate 13 and the drive shaft 25 are in contact with each other via the cylindrical sliding surface 73a. Furthermore, two main recesses 13 m are formed on the sliding surface 73 a of the second side plate 13 . The main recess 13m is located at an equal distance from the rear end of the drive shaft 25 and the main radial hole 25b. The main recessed portion 13 m opens to the slide surface 73 a at a position passing through the axial center of the drive shaft 25 . Further, two main back pressure holes 13 n extending from the respective main recesses 13 m to the rear end surface of the first rotor 27 are formed in the second side plate 13 .
[0107] In addition, if Figure 16 As shown, the third side plate 15 and the drive shaft 25 are in contact with each other via the cylindrical sliding surface...
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