Tandem Vane Compressor
A compressor, series technology, applied in the field of series vane compressors, can solve the problems of increased friction, increased power loss of rotor rotation, etc.
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no. 1 approach
[0018] will refer to Figures 1 to 4 A tandem vane compressor (hereinafter, simply referred to as "compressor") according to the first embodiment will be described.
[0019] Such as figure 1 As shown in , the housing 11 of the compressor 10 is composed of a cylindrical rear housing member 12 with a closed end and a cylindrical front housing member 13 with a closed end, the closed end of the cylindrical front housing member 13 end connected to the open end of the rear housing member 12 ( figure 1 in the left end). The rear case member 12 and the front case member 13 are made of metal material (in this embodiment, made of aluminum). A rotary shaft 23 is housed in the housing 11 . A first cylinder block 14 and a second cylinder block 15 are accommodated in the rear housing member 12 (casing 11 ). That is, a plurality of cylinder blocks (two in the present embodiment) are housed in the casing 11 . The first cylinder block 14 and the second cylinder block 15 are made of metal...
no. 1 approach
[0049] The first embodiment has the following advantages:
[0050] (1) The seventh oil supply passage 173 is formed between the rotating shaft 23 and the center plate 17 . Therefore, since the lubricating oil flowing through the seventh oil supply passage 173 is supplied to the interface between the rotating shaft 23 and the center plate 17, the lubricating effect between the rotating shaft 23 and the center plate 17 is excellent. Further, in the rear end surface of the center plate 17 , a seal member 51 is arranged between the rotation shaft 23 and the third oil discharge groove 176 in the radial direction of the center plate 17 . The seal member 51 restricts lubricating oil that has flowed from the seventh oil supply passage 173 into the interface between the rotary shaft 23 and the center plate 17 from flowing into the third oil drain groove 176 due to the pressure difference. Thereby, lubricating oil is prevented from being excessively supplied to the second back pressure...
no. 2 approach
[0055] will refer to Figure 5 with Image 6 A tandem vane compressor according to a second embodiment will be described. Components in the following embodiments that are the same as those in the first embodiment are given the same reference numerals, and descriptions of these components are omitted. Furthermore, in the second embodiment, the sealing member 51 in the first embodiment is not provided.
[0056] Such as Figure 5 with Image 6 As shown in , the valve chamber 61 in fluid communication with the first oil drain groove 185 is recessed in the rear side panel 18 . The valve chamber 61 extends in the axial direction of the rotation shaft 23 , and a holding plate 62 is attached to the opening of the valve chamber 61 . A hole 62 h is formed in the holding plate 62 . The valve chamber 61 is in fluid communication with the second back pressure chamber 32 c via the hole 62 of the retaining plate 62 and the first oil drain groove 185 .
[0057] A plate-shaped valve bod...
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